CN105572788B - A kind of light guide plate, backlight module and display device including the light guide plate - Google Patents
A kind of light guide plate, backlight module and display device including the light guide plate Download PDFInfo
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- CN105572788B CN105572788B CN201510506652.7A CN201510506652A CN105572788B CN 105572788 B CN105572788 B CN 105572788B CN 201510506652 A CN201510506652 A CN 201510506652A CN 105572788 B CN105572788 B CN 105572788B
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- inclined surface
- light
- guide plate
- light guide
- graphic patterns
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/003—Lens or lenticular sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a kind of light guide plate, the backlight module including the light guide plate and display devices.The embodiment of the present invention provides a kind of light guide plate comprising the light-emitting surface to external emission light, the reflecting surface at the back side positioned at light-emitting surface, light at least one side for being formed in multiple sides of connection light-emitting surface and reflecting surface and for receiving light source irradiation incidence surface and form multiple reflection graphic patterns on the reflecting surface.
Description
[technical field]
Backlight form unit and display device the present invention relates to a kind of light guide plate, including the light guide plate, more specifically
It is to be related to a kind of light guide plate that light diffusance can be improved, backlight module and display device containing the light guide plate.
[background technique]
Backlight module (BLU:Back Light Unit) is to provide the light source of light to the picture rear of liquid crystal display device
One kind of device, not only can direct images such as the brightness of image frame, the reproduction degree of color, angle of visibility, light dark ratio, readability
Quality, can also the parameters such as shape shadow power consumption, life of product, and backlight module is that cost accounts for entire liquid crystal display device cost
20~50% or so core component.
Backlight module can be roughly divided into straight-down negative (direct-lit) and side-light type because of the installation site difference of light source
(edge-lit).The light that straight-down negative is directly emitted using the light source for being located at picture dead astern to liquid crystal display panel direction, and side-light type
The light emitted using the light source for the required position for being located at picture to side direction, and should to the guidance of liquid crystal display panel direction by light guide plate
Light provides light to display panel whereby.Because of the difference of the structure, straight-down negative is uniform in the brightness of product, light dark ratio, picture
Degree, image reproduction power etc. have an advantage, and side-light type product thickness, in terms of there is advantage.
Recently, in field of display devices, because display device acts on raising as upholstery, therefore in appearance side
Just the trend with advantage side-light type increasingly increases.In particular, the ratio of the consumer of purchase super-thin display increases now
It is a kind of trend greatly, to adapt to this trend, 3~5 diffusions at the rear that display panel is set can be reduced to the maximum extent
The research of piece (diffusion sheet) just carries out in high gear.But such display device is because of the diffusion sheet needed for not,
Therefore the diffusivity of light is not can guarantee, and then hot spot (hotspot) distinct issues can be brought.It is therefore desirable to develop one kind to mention
The light guide plate of bloom diffusance.
[summary of the invention]
Technical problem
The invention mainly solves the technical problem of providing a kind of light guide plate that light diffusance can be improved, contain the light guide plate
Backlight module and display device.
Technical solution
To solve the technical problem, the embodiment of the present invention provides a kind of light guide plate comprising: to external emission light
Light-emitting surface, positioned at the back side of light-emitting surface reflecting surface, be formed in connection light-emitting surface and reflecting surface multiple sides at least one
On a side, and the multiple reflection graphic patterns of the incidence surface and formation of the light for receiving light source irradiation on the reflecting surface.Its
In, reflection graphic patterns include the negative quarter portion to the inner recess of the reflecting surface.The yin quarter portion include face from the reflection towards
The light-emitting surface carries out the first curved inclined surface of the periphery for tilting and connecting with the reflecting surface and tilts from described first
Peripheral the second curved inclined surface for carrying out inclination towards the reflection surface side and being connect with the reflecting surface.
To solve the technical problem, the embodiment of the present invention also provides a kind of backlight module comprising is used for irradiation light
Light source and light guide plate.The light guide plate include it is opposite with the light source and for receive light source irradiation light incidence surface,
And light-emitting surface for outside project incident light, with the light-emitting surface opposite reflection perpendicular with the incidence surface
Face and parallel with incidence surface and be formed in multiple reflection graphic patterns on the reflecting surface.Wherein, reflection graphic patterns include to described
The negative quarter portion of the inner recess of reflecting surface.It is described yin quarter portion include from it is described reflection towards the light-emitting surface carry out inclination and with institute
It states the first curved inclined surface of periphery of reflecting surface connection and is tilted from first inclination towards the reflection surface side
And peripheral the second curved inclined surface being connect with the reflecting surface.
Beneficial effect
The present invention can scatter light by reflection graphic patterns, so can be improved the light projected from light guide plate nephelometric turbidity unit and
Diffusance.
The present invention can inhibit the appearance of hot spot by the way that the light guide plate of light nephelometric turbidity unit can be improved.
[Detailed description of the invention]
Fig. 1 is the decomposition diagram of display device relevant to the embodiment of the present invention；
Fig. 2 is the cross-section diagram of display device relevant to the embodiment of the present invention；
Fig. 3 is the schematic diagram of light guide plate relevant to the embodiment of the present invention；
Fig. 4 is the back view of the light guide plate of the even density of reflection graphic patterns relevant to the embodiment of the present invention；
Fig. 5 is the back view of the light guide plate of the Density inhomogeneity of reflection graphic patterns relevant to the embodiment of the present invention；
Fig. 6 is the cross-section diagram of light guide plate relevant to the embodiment of the present invention；
Fig. 7 is the schematic diagram that figuratum light guide plate is set on incidence surface relevant to the embodiment of the present invention；
Fig. 8 is the schematic diagram that figuratum light guide plate is set on light-emitting surface relevant to the embodiment of the present invention；
Fig. 9 is the 1st schematic diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 10 is the 1st plan view of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 11 is the 1st cross-section diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 12 is the 2nd schematic diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 13 is the 2nd plan view of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 14 is the 2nd cross-section diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 15 is the 3rd schematic diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 16 is the 3rd plan view of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 17 is the 3rd cross-section diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 18 is the 4th schematic diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 19 is the 4th plan view of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 20 is the 4th cross-section diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 21 is the cross-section diagram of the light guide plate with asymmetric reflective pattern relevant to the embodiment of the present invention；
Figure 22 is the 5th schematic diagram of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 23 is the 5th plan view of reflection graphic patterns relevant to the embodiment of the present invention；
Figure 24 is the 5th cross-section diagram of reflection graphic patterns relevant to the embodiment of the present invention.
[explanation of reference numeral]
1000: display device
1600: backlight module
2000: light guide plate
2040: reflecting surface
2060: incidence surface
2200: reflection graphic patterns
2220: negative quarter portion
2222: the first inclined surface
2224: the second inclined surface
2240: boundary portion
2242: the first outer parts
2244: the second outer parts
2260: positive quarter portion
[specific embodiment]
In the following, with reference to attached drawing pair light guide plate relevant to the embodiment of the present invention, the backlight form unit containing the light guide plate
And display device is described in detail.
In addition, as long as there is identical or corresponding constituent element, can be quoted same or similar for any reference numeral
Cross reference number, and the repeated explanation carried out to it can be omitted.For convenience of description, to the size or shape of each constituent element of diagram
Shape can be expanded or be reduced.
The embodiment of the present invention provides a kind of light guide plate comprising: to the light-emitting surface of external emission light；Positioned at light-emitting surface
The reflecting surface at the back side；It is formed at least one side in multiple sides of connection light-emitting surface and reflecting surface, and for receiving
The incidence surface of the light of light source irradiation；And the multiple reflection graphic patterns of formation on the reflecting surface.Reflection graphic patterns include to the reflection
The negative quarter portion of the inner recess in face.It is described yin quarter portion include: from it is described reflection towards the light-emitting surface carry out inclination and with it is described
Curved the first inclined surface in periphery of reflecting surface connection and tilt towards the reflection surface side from first inclination and
The second curved inclined surface of the periphery being connect with the reflecting surface.
The rectangular quadrangle of reflection graphic patterns, first inclined surface and institute when being observed along the direction perpendicular to reflecting surface
The periphery for stating the second inclined surface is the curve heaved on the outside of the right angle quadrangle.
The curvature of the periphery of the curvature and second inclined surface of the periphery of first inclined surface can be different.
In first inclined surface and second inclined surface, the song on the periphery from the closer inclined surface of the incidence surface
Rate is bigger.
In first inclined surface and second inclined surface, the inclination angle of the bigger inclined surface of the curvature is smaller.
In first inclined surface and second inclined surface, the smaller inclined surface in inclination angle is located at from the incidence surface
Closer proximity.
In first inclined surface and second inclined surface, the inclination angle of the lesser inclined surface in inclination angle is 40~60
Degree, in first inclined surface and second inclined surface, the inclination angle of the biggish inclined surface in inclination angle is 50~75 degree.
The reflection graphic patterns can further comprise forming to reflection surface side recess and being formed in first inclined surface
With a pair of of side of the two sides of second inclined surface, the periphery that the pair of side is connected with the reflecting surface respectively is straight
Line.
The reflection graphic patterns can further comprise rolling tiltedly to form and be formed in from the reflecting surface side to the light-emitting surface
A pair of of side of the two sides of first inclined surface and second inclined surface, the pair of side respectively with the reflecting surface phase
Periphery even is curve.
The curvature ratio at the position that the side is connected with the reflecting surface, first inclined surface are connected with the reflecting surface
Position curvature or the curvature at position that is connected with the reflecting surface of second inclined surface it is smaller.
The reflection graphic patterns can further comprise on the periphery of first inclined surface to the prominent shape in the reflecting surface side
At the first positive quarter portion.
The reflection graphic patterns can further comprise being formed in the periphery of second inclined surface to the reflecting surface is prominent
Second sun quarter portion.
The maximum height in the second sun quarter portion described in the peak height ratio in first sun quarter portion is higher, along perpendicular to reflecting surface
Direction observation when, described in the area ratio in the first positive quarter portion second positive quarter portion area it is bigger.
In addition, the other embodiment of the present invention also provide it is a kind of include light source and light guide plate for irradiation light backlight mould
Group.The light guide plate includes: opposite with the light source and incidence surface and the incidence surface phase for receiving the light that light source irradiates
Light-emitting surface, the reflecting surface opposite with the light-emitting surface and and incidence surface vertical and for projecting incident light to outside
In parallel and it is formed in multiple reflection graphic patterns on the reflecting surface.Reflection graphic patterns include the yin to the inner recess of the reflecting surface
Quarter portion.The yin quarter portion includes: from the periphery that the reflection tilt and connect with the reflecting surface towards the light-emitting surface
Curved the first inclined surface and inclination is carried out towards the reflection surface side from first inclination and is connect with the reflecting surface
Curved the second inclined surface in periphery.
The rectangular quadrangle of reflection graphic patterns, first inclined surface and institute when being observed along the direction perpendicular to reflecting surface
The periphery for stating the second inclined surface is the curve heaved on the outside of the right angle quadrangle.
The curvature on the periphery of the curvature on the periphery of first inclined surface and second inclined surface can not be identical.
In first inclined surface and second inclined surface, the song on the periphery from the closer inclined surface of the incidence surface
Rate is bigger.
In first inclined surface and second inclined surface, the inclination angle of the bigger inclined surface of the curvature is smaller.
In first inclined surface and second inclined surface, the smaller inclined surface in inclination angle is located at from the incidence surface
Closer proximity.
The reflection graphic patterns can further comprise being formed in the periphery of first inclined surface to the reflecting surface is prominent
First positive quarter portion and second inclined surface periphery to prominent the second sun quarter portion formed of the reflecting surface.
Display device (1000) relevant to the embodiment of the present invention is illustrated below.The display device (1000) can
To be not understood as all display devices that such as LCD display device, PDP display device, OLED display are capable of displaying image
(1000).But it is illustrated centered on liquid crystal display device (1000) for convenience of description in following the description.
Fig. 1 is the decomposition diagram of display device (1000) relevant to the embodiment of the present invention, Fig. 2 be with it is of the invention
The cross-section diagram of the relevant display device of embodiment (1000).
With reference to Fig. 1 and Fig. 2 it is found that display device (1000) may include shell (1200), display panel (1400) and back
Optical mode group (1600).
Shell (1200) is for accommodating display panel (1400) and backlight module (1600), the member for protecting it internal whereby
Part is not by from external impact.Shell (1200) plays a part of to integrate display panel (1400) and backlight module (1600).
Shell (1200) may include upper body (1220), lead-frame (1240) and lower case (1260).Upper case
Body (1220) and lower case (1260) be combined with each other protects the front and back of display device (1000), lead-frame whereby
(1240) it is mounted between the two shells.The fixed display together with the card slot of upper body (1220) of this lead-frame (1240)
Panel (1400), at the same with lower case (1260) together lightguide plate fixing (2000) and multiple optical sheets (1620).
Display panel (1400) shows image using the light that backlight module (1600) provide.
Display panel (1400) may include two transparent substrates and the liquid crystal layer (1420) being clipped between two substrate.It is described
Transparent substrate can be colored filter substrate (color filter, 1460), thin film transistor base (TFT:Thin Film
Transistor, 1440).By the grid lines (gate line) of thin film transistor base (1440) and data line to liquid crystal layer
(1420) when input electrical signal, the arrangement mode of liquid crystal can change, and then can make with pixel (pixel) for unit progress
The light of the backlight module (1600) of selection penetrates liquid crystal layer (1420), passes through colorized optical filtering chip base through the light of liquid crystal layer (1420)
Plate (1460) encloses color and image output.Thin film transistor base (1440) passes through printed circuit board (PCB:Printed
It is Circuit Board, not shown) with flip chip (COF:Chip On Film), thin-film package body (TCP:Tape
Carrier Package) etc. panel drivings portion (not shown) be conductively connected and latter provide signal.
Backlight module (1600) can provide light to the rear of display panel (1400), and the display panel (1400) is made to export shadow
Picture.
Backlight module (1600) may include optical sheet (1620), light source matrix (array, 1640), light guide plate (2000) with
And reflecting plate (1680).
Light source matrix (1640) may include the light source (1642) for generating light and the light source substrate for being equipped with light source (1642)
(1644).Cold-cathode tube (CCFL:Cold Cathode Fluorescent Lamp), external can be used as light source (1642)
Electrode fluorescence lamp (EEFL:External Electrode Fluorescent Lamp), light emitting diode (LED:Light
Emitting Diode) etc..When using sidelight type backlight module (1600), in order to by the light of light source matrix (1640) from light guide plate
(2000) side is incident, and light source (1642) can be made to be directed toward the side of the specified position of display device (1000).Using straight-down negative
When backlight module (1600), to make light source (1642) to be directed toward the rear of display panel (1400), lower case can be disposed at
(1260) on.At this point, can be arranged on lower case (1260) or be not provided with light source substrate for light source substrate (1644)
(1644) directly light source (1642) are arranged on lower case (1260).
In sidelight type backlight module (1600), light guide plate (2000) can be arranged to and the rear of display panel (1400)
Opposite mode.At this point, the light guide plate (2000) can be played the light directing display panel of light source (1642) directive side
(1400) effect of side.It, can be in the upper of light guide plate (2000) to improve the light uniformity to improve brightness, improve the measures such as hot spot
Pattern is arranged in face, following and light source (1642) side.As the material of light guide plate (2000), PMMA(PMMA can be used:
Poly Methly Methacrylate), the materials such as MS, MMA or glass.More specific detail to light guide plate (2000)
It is carried out in following the description.In addition, when using down straight aphototropism mode set (1600), because of the light guide plate (2000) without being used for leaded light, therefore
It should have the diffuser plate of diffusion light.
Optical sheet (1620) be arranged display panel (1400) rear and with display panel (1400) relatively, be equipped with leaded light
It can be disposed at when plate (2000) between display panel (1400) and light guide plate (2000).Example as optical sheet (1620)
There are diffusion sheet (1624) or prismatic lens (1622).Diffusion sheet (1624) can uniformly be spread from light guide plate (2000) or diffuser plate
The uniformity for projecting light distribution can be improved in the light of middle injection whereby, alleviates or inhibit the light and shade (dark/ such as ripple (Moire)
Bright) the appearance of striped or hot spot.The path of light can be adjusted to perpendicular to display panel (1400) by prismatic lens (1622)
Direction.It can disperse forwards by the light of light guide plate (2000) or diffusion sheet (1624), prismatic lens (1622) can make these
The brightness and view of display device (1000) can be improved to the direction injection perpendicular to display panel (1400) in dispersed light whereby
Wild angle.In the optical sheet (1620) of an embodiment, as shown in Figure 1 and Figure 2, set since at display panel (1400)
There are vertical prism sheets (1622a), horizon prism piece (1622b), diffusion sheet (1624).Grade optical sheets (1620) put in order
It is not necessarily intended to fully comply with putting in order for the embodiment.That is, can be by a part of optical sheet in equal optical sheets (1620)
Delete or be arranged multiple identical optical sheets (for example, settable 2 or more diffusion sheet (1624)) or according to reality
Need suitably to change putting in order for the grade optical sheets.
Reflecting plate (1680) can be mounted on lower case (1260).This reflecting plate (1680) can be by light source (1642)
The light at directive rear in the light of transmitting, to display panel (1400) lateral reflection.Because this reflecting plate (1680) can will be from light guide plate
(2000) or the light of the back side of diffuser plate injection is to display panel (1400) lateral reflection, therefore can reduce the loss of light, improves
The overall brightness of display device.
Light guide plate (2000) relevant to the embodiment of the present invention is described in more detail below.
Fig. 3 is the schematic diagram of light guide plate (2000) relevant to the embodiment of the present invention, and Fig. 4 is and the embodiment of the present invention
The back view of the light guide plate (2000) of the even density of relevant reflection graphic patterns (2200), Fig. 5 are and the embodiment of the present invention phase
The back view of the light guide plate (2000) of the Density inhomogeneity of the reflection graphic patterns (2200) of pass, Fig. 6 are and the embodiment of the present invention phase
The cross-section diagram of the light guide plate (2000) of pass, Fig. 7 be set on incidence surface (2060) relevant to the embodiment of the present invention it is figuratum
The schematic diagram of light guide plate (2000), Fig. 8 are to set figuratum leaded light on light-emitting surface (2020) relevant to the embodiment of the present invention
The schematic diagram of plate (2000).
With reference to such as 3~Fig. 8 it is found that light guide plate (2000) can be plate light guide plate.Therefore light guide plate (2000) has one
To multiple sides of cylinder and connection cylinder.It is to display with upper surface similar in display panel (1400) in a pair of of cylinder
Panel (1400) projects the light-emitting surface (2020) of light, and opposite face is the reflecting surface (2040) for reflected light.In multiple sides
In, at least one side is opposite with light source (1642) and can receive the incidence surface (2060) of its light.General display device (1000)
Picture with quadrangle, therefore corresponding light guide plate (2000) is also with the shape of quadrangle.Light guide plate is quadrangle
When plate light guide plate (2000), one side in four sides or a pair of of side opposing upper and lower or left and right it is opposite one
Incidence surface (2060) can be become to side.In addition, light guide plate (2000) shown in Fig. 3 though lead for the uniform plate of its integral thickness
Tabula rasa, but also can change its thickness as needed.It in one embodiment, can also be by light guide plate to improve light efficiency
(2000) thickness of part that is opposite with light source (1642) and closing on side is made into thicker than other regions in.
This light guide plate (2000) can receive the light that light source (1642) are projected by incidence surface (2060), and pass through light guide plate
(2000) inside leaded light effect can project the light of light source (1642) from light-emitting surface (2020).Reflecting surface (2040) play by
Effect of the light projected from the back side of light guide plate (2000) to light-emitting surface (2020) lateral reflection.In incidence surface (2060), light-emitting surface
(2020) it and can be respectively arranged to improve the pattern into light, leaded light and light extraction efficiency on reflecting surface (2040).In particular,
The settable back side for reflecting from light guide plate (2000) on reflecting surface (2040), i.e., the light projected from reflecting surface (2040)
Reflection graphic patterns (2200).
It can be arranged on reflecting surface (2040) multiple reflection graphic patterns (2200).The reflection graphic patterns (2200), as shown in Figure 4 with
The mode of even density is located on reflecting surface (2040), or is located at reflecting surface in a manner of Density inhomogeneity as shown in Figure 5
(2040) on.In larger panel, close to the region of the incidence surface (2060) of light guide plate (2000) and far from light guide plate (2000)
Incidence surface (2060) region between can generate luminance difference.At this point, can be by making the region far from incidence surface (2060)
The density ratio of reflection graphic patterns (2200) mode closeer close to the density of the reflection graphic patterns (2200) in the region of incidence surface (2060),
Alleviate this luminance difference.Here the density of reflection graphic patterns (2200) can be by reflection graphic patterns (2200) in reflecting surface (2040)
Occupation rate, the size of reflection graphic patterns (2200), the spacing of reflection graphic patterns (2200) etc. be defined.
This reflection graphic patterns (2200) can pass through silk screen method (silk screening), printing process, laser-induced thermal etching
Method, evaporation coating method, method for stamping (pressing), mechanical stamping method etc. are manufactured.By the method, can will reflect
The light that will be projected from the back side of light guide plate (2000) is made effectively to light-emitting surface (2020) lateral reflection or folding in pattern (2200)
The shape penetrated.Reflection graphic patterns (2200) shape is specifically described in the following.
The light distribution angle for improving the light that light source (1642) are injected can be set in the incidence surface (2060) of light guide plate (2000),
Increase zigzag (serrated) pattern (2400) of diffusion effect.As shown in fig. 7, saw-tooth like pattern (2400) is mainly formed at
On incidence surface (2060), make the positive quarter portion vertically extended and yin quarter portion anti-along the width direction of incidence surface (2060) whereby
Multiple bank column.Can be arranged on the light-emitting surface (2020) of light guide plate (2000) will be guided by the light of incidence surface (2060) incidence to leading
The guide-lighting pattern (2600) of the whole region of tabula rasa (2000).Guide-lighting pattern (2600) is along the direction perpendicular to incidence surface (2060)
Extension state is repeatedly formed on light-emitting surface (2020), as shown in figure 8, guide-lighting pattern (2600) lens can be designed to
(lenticular) shape or quadrant prism shape.
The saw-tooth like pattern (2400) and leaded light pattern (2600) can be with light guide plate such as reflection graphic patterns (2200)
(2000) it is integrally formed, all saw-tooth like pattern (2400), guide-lighting pattern can also be formed on light guide plate (2000)
(2600) and reflection graphic patterns (2200).
In the following, being illustrated to reflection graphic patterns (2200) relevant to the embodiment of the present invention.
Reflection graphic patterns (2200) are formed on light guide plate (2000) in the form for protruding or being recessed from reflecting surface (2040),
The light projected from the back side of light guide plate (2000) is reflected whereby.By the reflection, it can increase from light guide plate (2000) and go out light
The light quantity that face (2020) is projected increases the brightness of display device (1000).
Reflection graphic patterns (2200) of the invention can substantially occur in the form of prism pattern.Along perpendicular to reflecting surface (2040)
Direction observation when, reflection graphic patterns (2200) generally comprise in the form of prism be recessed on reflecting surface (2040) region (under
Claim sunk area).
Reflection graphic patterns (2200) are mainly manufactured by mechanical stamping method, method for stamping etc..Specifically, sunk area
It can be manufactured by way of mechanical stamping method, method for stamping recessed reflector face (2040), outburst area can pass through recess
Position is manufactured to the mobile mode in periphery.Using the mechanical stamping method of hot compression mode, method for stamping, can effectively improve
Form the efficiency of pattern.
This reflection graphic patterns (2200) can will be incident from incidence surface (2060) and the light that advances to reflecting surface (2040) or
The light to be advanced by light-emitting surface (2020) reflection retroreflection face (2040), is reflected, reflected or is scattered to each region, therefore
It can effective reflected light.Specifically, reflection graphic patterns (2200) can successively be reflected in positive quarter portion (2260), be scattered, being spread and
After reflection, negative quarter portion (2220) reflects the light again, is scattered, spread and is reflected.Therefore raising entirety can be brought to go out
The effect of the brightness uniformity of smooth surface (2020).
In the following, being said to the first case in a variety of examples of reflection graphic patterns (2200) relevant to the embodiment of the present invention
It is bright.
Fig. 9 is the 1st schematic diagram of reflection graphic patterns (2200) relevant to the embodiment of the present invention, and Figure 10 is and this hair
1st plan view of the relevant reflection graphic patterns of bright embodiment (2200), Figure 11 are relevant to the embodiment of the present invention anti-
Penetrate the 1st cross-section diagram of pattern (2200).
With reference to Fig. 9~Figure 11 it is found that the 1st of reflection graphic patterns relevant to the embodiment of the present invention (2200) includes that yin is carved
Portion (2220) and the boundary portion (2240) for surrounding yin quarter portion (2220).
Negative quarter portion (2220) is the structure being recessed inwardly relative to the reflecting surface (2040) as datum level.Negative quarter portion
It (2220) may include the first inclined surface (2222), the second inclined surface (2224), third inclined surface (2226) and the 4th inclined surface
(2228).Here third inclined surface (2226) and the 4th inclined surface (2228) is equivalent to the side of negative quarter portion (2220).
In the 1st reflection graphic patterns (2200), when being observed along the direction perpendicular to reflecting surface (2040), negative quarter portion
(2220) in regular quadrangle, right angle quadrangle or antiparallelogram (but in following content for convenience of description with four side of right angle
It is illustrated for shape).The week of first inclined surface (2222) and second inclined surface (2224) adjacent with reflecting surface (2040)
It side can be parallel with incidence surface (2060).First inclined surface (2222) is since the position adjacent with reflecting surface (2040) to light-emitting surface
(2020) direction tilts.Second inclined surface (2224) is since the position adjacent with reflecting surface (2040) to light-emitting surface (2020) side
To inclination.The end of first inclined surface (2222) and the second inclined surface (2224) can be connected with each other.Third inclined surface (2226) and
4th inclined surface (2228) at reflecting surface (2040) be recessed and formed, and then with the first inclined surface (2222), the second inclination
Face (2224) and the corner of reflecting surface (2040) are connected.The concrete shape of each inclined surface can be prism shape.That is, portion of negative quarter
(2220) feature that its thickness is gradually increased when having mobile from boundary portion (2240) to the center of negative quarter portion (2220), third are inclined
Inclined-plane (2226) and the 4th inclined surface (2228) be formed in the first inclined surface (2222) and the second inclined surface (2224) end it
Between.Wherein, the inclination angle of the first inclined surface (2222) and the second inclined surface (2224) can be identical, third inclined surface (2226) and
The inclination angle of 4th inclined surface (2228) can also be identical.
Boundary portion (2240) is the rectangular quadrangle for being located at negative quarter portion (2220) and reflecting surface (2040) connecting place, positive four
The periphery of side shape or equilateral quadrangle.This boundary portion (2240) can include: be equivalent to the first inclined surface (2222) and reflection
Face (2040) connecting place periphery the first outer part (2242) and be equivalent to the second inclined surface (2224) and reflecting surface
(2040) the second outer part (2244) of the periphery of connecting place.First outer part (2242) and the second outer part (2244) can be
From the outwardly projecting curve in outside of negative quarter portion (2220).Therefore between the first outer part (2242) and the second outer part (2244)
Spacing it is most wide at the intermediate position of negative quarter portion (2220), both ends its spacing closer to negative quarter portion (2220) can be narrower.At this point,
The curvature of first outer part (2242) and the second outer part (2244) can be identical, and because of the bending yin quarter portion of boundary portion (2240)
(2220) area can become larger.
The area that incident light can reach can be increased by the reflection graphic patterns (2200), increased through reflection graphic patterns (2200)
The light quantity projected after scattering, diffusion from light-emitting surface (2020), can effectively improve the uniformity of brightness whereby.
In the following, being said to the second case in a variety of examples of reflection graphic patterns (2200) relevant to the embodiment of the present invention
It is bright.
Figure 12 is the 2nd schematic diagram of reflection graphic patterns (2200) relevant to the embodiment of the present invention, and Figure 13 is and this
2nd plan view of the relevant reflection graphic patterns of the embodiment of invention (2200), Figure 14 is relevant to the embodiment of the present invention
2nd cross-section diagram of reflection graphic patterns (2200).
With reference to Figure 12~Figure 14 it is found that the 2nd of reflection graphic patterns relevant to the embodiment of the present invention (2200) includes yin
Quarter portion (2220) and the boundary portion (2240) for surrounding yin quarter portion (2220).1st boundary portion (2240) includes suitable
In the periphery of the first inclined surface (2222) and reflecting surface (2040) connecting place the first outer part (2242) and be equivalent to second
The second outer part (2244) of inclined surface (2224) and the periphery of reflecting surface (2040) connecting place, but the 2nd boundary portion
It (2240) may include the third outer part for being equivalent to the periphery of third inclined surface (2226) and reflecting surface (2040) connecting place
(2246) and be equivalent to the 4th inclined surface (2228) and reflecting surface (2040) connecting place periphery fourth peripheral portion
(2248).
The shape of the negative quarter portion (2220) of 2nd reflection graphic patterns (2200) reflection graphic patterns with the 1st on the whole
(2200) shape of negative quarter portion (2220) is similar, therefore to it, it will not be described at this.
The boundary portion (2240) of 2nd reflection graphic patterns (2200) includes being equivalent to third inclined surface (2226) and reflecting surface
(2040) connecting place periphery third outer part (2246) and be equivalent to the 4th inclined surface (2228) and reflecting surface (2040)
The fourth peripheral portion (2248) of the periphery of connecting place.Third outer part (2246) and fourth peripheral portion (2248) can be carves from yin
The outwardly projecting curve in outside in portion (2220), the spacing between third outer part (2246) and fourth peripheral portion (2248) is in yin
The intermediate position in quarter portion (2220) is most wide, and both ends its spacing closer to negative quarter portion (2220) can be narrower.At this point, third outer part
(2246) and the curvature of fourth peripheral portion (2248) can be identical or different.Third outer part (2246) and fourth peripheral portion
(2248) curvature is smaller than the curvature of the first outer part (2242) and the second outer part (2244).
Compared with the 1st reflection graphic patterns (2200), because the 2nd reflection graphic patterns (2200) contain third outer part
(2246) and fourth peripheral portion (2248), therefore the area that incident light can reach can be increased.And then it can increase through reflection graphic patterns
(2200) from the light quantity of light-emitting surface (2020) injection after scattering, spreading, the uniformity of brightness is effectively improved.
In the following, being said to the third example in a variety of examples of reflection graphic patterns (2200) relevant to the embodiment of the present invention
It is bright.
Figure 15 is the 3rd schematic diagram of reflection graphic patterns (2200) relevant to the embodiment of the present invention, and Figure 16 is and this
3rd plan view of the relevant reflection graphic patterns of the embodiment of invention (2200), Figure 17 is relevant to the embodiment of the present invention
3rd cross-section diagram of reflection graphic patterns (2200).
With reference to Figure 15~Figure 17 it is found that the 3rd of reflection graphic patterns relevant to the embodiment of the present invention (2200) includes yin
Quarter portion (2220) and the boundary portion (2240) for surrounding yin quarter portion (2220).1st the first inclined surface (2222) and second
The inclination angle of inclined surface (2224) is identical, and the curvature of the first outer part (2242) and the second outer part (2244) is also identical.But
The inclination angle of 3rd the first inclined surface (2222) and the second inclined surface (2224) is different, and the first outer part (2242) and
The curvature of two outer parts (2244) is also different.
The first outer part (2242) of 3rd reflection graphic patterns (2200) and the curvature of the second outer part (2244) can phases
It is different.It, can be bigger by the curvature for the second outer part of ratio (2244) that the curvature of the first outer part (2242) is done as wherein an example.
The first inclined surface (2222) of 3rd reflection graphic patterns (2200) and the inclination angle phase of the second inclined surface (2224)
It is different.It, can be by the inclination angle for the second inclined surface of ratio (2224) that the inclination angle of the first inclined surface (2222) is done more as wherein an example
It is small.At this point, the first inclined surface (2222) can be gradual inclined-plane, it is formed in from incidence surface (2060) closer position.When slow
It, can will be from the light of incidence surface (2060) incidence in wider range when becoming inclined-plane and being located at from incidence surface (2060) closer position
It reflected, reflected to light-emitting surface (2020) side.Certainly, the size at inclination angle and the curvature of outer part are not necessarily intended to fully comply with
The relationship can also do the curvature of the outer part of the big inclined surface in inclination angle smaller.And also as needed by inclination angle compared with
Big side is formed in from incidence surface (2060) closer position.
It is non-same because its shape is in asymmetric form, therefore in its optical characteristic in the 3rd reflection graphic patterns (2200)
Tropism feature, i.e. anisotropy feature can be protruded more.The bigger side of area in general inclined surface has stronger than the back side
Light scattering effect.Relative to the side of inclined surface, the back side can provide better angle of visibility.It is special by the anisotropy optics
Sign, can improve the brightness uniformity and angle of visibility of display device (1000).
In the following, being said to the 4th in a variety of examples of reflection graphic patterns (2200) relevant to the embodiment of the present invention
It is bright.
Figure 18 is the 4th schematic diagram of reflection graphic patterns (2200) relevant to the embodiment of the present invention, and Figure 19 is and this
4th plan view of the relevant reflection graphic patterns of the embodiment of invention (2200), Figure 20 is relevant to the embodiment of the present invention
4th cross-section diagram of reflection graphic patterns (2200).
With reference to Figure 18~Figure 19 it is found that the 4th of reflection graphic patterns relevant to the embodiment of the present invention (2200) includes yin
Quarter portion (2220) and the boundary portion (2240) for surrounding yin quarter portion (2220).3rd boundary portion (2240) includes suitable
In the periphery of the first inclined surface (2222) and reflecting surface (2040) connecting place the first outer part (2242) and be equivalent to second
The second outer part (2244) of inclined surface (2224) and the periphery of reflecting surface (2040) connecting place, but the 4th boundary portion
It (2240) may include the third outer part for being equivalent to the periphery of third inclined surface (2226) and reflecting surface (2040) connecting place
(2246) and be equivalent to the 4th inclined surface (2228) and reflecting surface (2040) connecting place periphery fourth peripheral portion
(2248).
The shape of the negative quarter portion (2220) of 4th reflection graphic patterns (2200) reflection graphic patterns with the 3rd on the whole
(2200) shape of negative quarter portion (2220) is similar, therefore to it, it will not be described at this.
The boundary portion (2240) of 4th reflection graphic patterns (2200) may include being equivalent to third inclined surface (2226) and reflection
Face (2040) connecting place periphery third outer part (2246) and be equivalent to the 4th inclined surface (2228) and reflecting surface
(2040) the fourth peripheral portion (2248) of the periphery of connecting place.Third outer part (2246) and fourth peripheral portion (2248) can be
From the outwardly projecting curve in outside of negative quarter portion (2220).Therefore between third outer part (2246) and fourth peripheral portion (2248)
Spacing it is most wide at the intermediate position of negative quarter portion (2220), both ends its spacing closer to negative quarter portion (2220) can be narrower.At this point,
The curvature of third outer part (2246) and fourth peripheral portion (2248) can be identical or different.
Compared with the 3rd reflection graphic patterns (2200), because the 4th reflection graphic patterns (2200) contain third outer part
(2246) and fourth peripheral portion (2248), therefore the area that incident light can reach can be increased.And then it can increase through reflection graphic patterns
(2200) from the light quantity of light-emitting surface (2020) injection after scattering, spreading, the uniformity of brightness is effectively improved.
It is non-same because its shape is in asymmetric form, therefore in its optical characteristic in the 4th reflection graphic patterns (2200)
Tropism feature, i.e. anisotropy feature can be protruded more.The bigger side of area in general inclined surface has stronger than the back side
Light scattering effect.Relative to the side of inclined surface, the back side can provide better angle of visibility.It is special by the anisotropy optics
Sign, can improve the brightness uniformity and angle of visibility of display device (1000).
In the content, to be arranged on the lesser inclined surface in inclination angle the situation of the bigger boundary portion (2240) of curvature into
Go explanation, but as needed, the bigger boundary portion (2240) of curvature can also be set on the bigger inclined surface in inclination angle.
In addition, being carried out to by the lesser inclined surface setting in inclination angle in the situation from incidence surface (2060) closer position in the content
Explanation, but the biggish inclined surface in inclination angle can also be arranged from incidence surface (2060) closer position.
Figure 21 is the cross-section diagram of the light guide plate with asymmetric reflective pattern (2200) relevant to the embodiment of the present invention.
It, can be smaller by the inclination angle of the inclined surface of negative quarter portion (2220) with reference to Figure 21 it is found that in reflection graphic patterns (2200)
And the biggish inclined surface of curvature of outer part is located on reflecting surface (2040) along the direction close to incidence surface (2060).Generally from anti-
The light for penetrating pattern (2200) entrance mainly advances to incidence surface (2060) direction, therefore tool can be arranged by the incident direction in light
There is the method for the gradual inclined surface (the first inclined surface (2222)) of the negative quarter portion (2220) of the outer part of greater curvature, can infinitely put
The diffusion of the big negative quarter portion (2220) with larger area, dispersion effect.It can also be as needed by the lesser inclined surface in inclination angle
It is arranged from incidence surface (2060) remote position.
Figure 22 is the 5th schematic diagram of reflection graphic patterns (2200) relevant to the embodiment of the present invention, and Figure 23 is and this
5th plan view of the relevant reflection graphic patterns of the embodiment of invention (2200), Figure 24 is relevant to the embodiment of the present invention
5th cross-section diagram of reflection graphic patterns (2200).
With reference to Figure 22~Figure 24 it is found that the 5th of reflection graphic patterns relevant to the embodiment of the present invention (2200) includes yin
Quarter portion (2220), the boundary portion (2240) for surrounding yin quarter portion (2220) and positive quarter portion (2260).4th without including that sun is carved
Portion (2260), but the 5th includes from boundary portion (2240) to the back side of light-emitting surface (2020) positive quarter portion (2260) outstanding.
The shape of the negative quarter portions (2220) of 5th reflection graphic patterns (2200) and boundary portion (2240) is on the whole with the 4th
Example reflection graphic patterns (2200) negative quarter portion (2220) and boundary portion (2240) shape it is similar, therefore at this to its no longer into
Row explanation.
Positive quarter portion (2260) can boundary portion (2240) from reflecting surface (2040) it is prominent to the back side of light-emitting surface (2020).?
It is first outer part (2242), the second outer part (2244), prominent on third outer part (2246) and fourth peripheral portion (2248)
Positive quarter portion (2260) size and projecting height can be different or identical.For example, in the first outer part (2242) and second
The size of the outstanding first and second positive quarter portion (2260) is identical with projecting height on outer part (2244), in third outer part
(2246) size of sun quarter portion (2260) outstanding is identical with projecting height and on fourth peripheral portion (2248), in the first periphery
Outstanding first and second positive quarter portion (2260) and in third outer part in portion (2242) and the second outer part (2244)
(2246) size of sun quarter portion (2260) outstanding and projecting height are different and on fourth peripheral portion (2248).In the first periphery
The size and projecting height of outstanding first and second positive quarter portion (2260) in portion (2242) and the second outer part (2244)
It can also be different.For example, being formed in the lesser periphery in inclination angle in the first outer part (2242) and the second outer part (2244)
The largest amount of positive quarter portion (2260) in portion and projecting height are than the positive quarter portion that is formed on the biggish outer part in inclination angle
(2260) largest amount and projecting height is bigger.Certainly, structure also may be used.
It is non-same because its shape is in asymmetric form, therefore in its optical characteristic in the 5th reflection graphic patterns (2200)
Tropism feature, i.e. anisotropy feature can be protruded more.Thickness is thicker generally in positive quarter portion and the higher side ratio of maximum height
The back side has stronger light scattering effect.Therefore, higher-height positive quarter portion (2260) can be located at from the closer position of incidence surface
It sets, a lower height of positive quarter portion (2260) is located at from incidence surface remote position.Certainly, structure also may be used.
The maximum height and area in the portion Yin Yangke (2260) are different, therefore one side can provide the better visual field than the back side
Angle.Particularly, the maximum height of positive quarter portion (2260) and area are smaller, and the angle of visibility of corresponding direction can be more preferable.Therefore benefit
With this anisotropy optical signature, the brightness uniformity and angle of visibility of display device (1000) can be improved.
In display device (1000), the angle of visibility of transverse direction serve than the angle of visibility of longitudinal direction it is bigger, because
This positive quarter portion (2260) is by region high, thickness thickness by maximum height along the side that the longitudinal direction of display device (1000) is arranged
Method can prevent the reduction of angle of visibility.And in the lower section angle of visibility and top angle of visibility of longitudinal angle of visibility, because of prior view
The setting position at wild angle is different, the maximum height of negative quarter portion (2220) can be located at display device in high, thickness thickness region
(1000) either above or below.That is, because of the positive quarter portion for being formed in the first outer part (2242) and the second outer part (2244)
(2260) maximum height and area ratio is formed in the maximum height of third outer part (2246) and fourth peripheral portion (2248)
It is big with area, thus it is preferable in vertical direction to the direction of the second outer part (2244) from the first outer part (2242).
In addition, be in different occasions while ensuring luminance uniformity and angle of visibility, light source matrix (1640) can be located at down
Side is simultaneously adjusted reflection graphic patterns (2200), keeps the major part of the positive quarter portion (2260) of reflection graphic patterns (2200) downwardly directed, whereby
It can ensure described two simultaneously.
At a distance from the vertical direction of the reflection graphic patterns (2200) relevant with variation of the invention (height or
The absolute value of person's depth) in, the depth capacity of negative quarter portion (2220) is most deep, and the maximum height of positive quarter portion (2260) is secondly.Specifically
, the depth capacity of negative quarter portion (2220) is about 20~100, and the maximum height of positive quarter portion (2260) is about 0.5~10.Edge
Perpendicular to reflecting surface direction observation when, the length of the longer direction of negative quarter portion (2220) is about 20~150, shorter direction
Length is about 20~100.As needed can also by the extension of the longer direction of negative quarter portion (2220) to and light guide plate
(2000) length of incidence surface (2060) is identical.And the length in shorter direction can also be set to longer as needed.
The inclination angle of the first inclined surface (2222) of positive quarter portion (2260) can be 40~60 degree, the second inclined surface (2224)
Inclination angle can be 50~70 degree.The inclination angle of third inclined surface (2226) and the 4th inclined surface (2228) can for 50~
90 degree.
In the drawing, the surface of reflection graphic patterns (2200) is expressed as smooth surface, but actual reflectogram
Case (2200) can have certain roughness, and especially negative quarter portion (2220) and sun quarter portion (2260) can have bigger thick
Rugosity.
The parameter (spec) of the reflection graphic patterns (2200) be not limited to the height, depth and width, inclination angle,
Roughness etc. can need to carry out change appropriate to it according to different.
The reflection graphic patterns (2200) being formed on the reflecting surface (2040) can have identical parameter, reflecting surface
(2040) reflection graphic patterns (2200) on different location also can have different parameters.For example, working as all reflection graphic patterns
(2200) advantageous to manufacturing engineering when parameter having the same, production unit price of product etc. can be reduced.On the contrary, closer to light is entered
The diameter of the reflection graphic patterns (2200) in face (2060) gets over hour, and the bright of the light-emitting surface (2020) of entire light guide plate (2000) can be improved
Spend the uniformity.
Better embodiment of the invention above is disclosure for the solution purpose of the present invention.Of the invention is special
Sharp range is not limited to the content, and those skilled in the art utilizes equivalent made by description of the invention and accompanying drawing content
Amendment that structure or equivalent process carry out, change and it is additional etc. whens, grade amendment, change and add etc. and to be included in this hair
In bright scope of patent protection.
Claims (16)
1. a kind of light guide plate comprising:
To the light-emitting surface of external emission light；
Reflecting surface positioned at the back side of light-emitting surface；
Incidence surface is formed at least one side in multiple sides of connection light-emitting surface and reflecting surface, and for receiving
The light of light source irradiation；And
Form multiple reflection graphic patterns on the reflecting surface；
Wherein, reflection graphic patterns include the negative quarter portion to the inner recess of the reflecting surface,
The yin quarter portion includes tilt towards the light-emitting surface from the reflection and the periphery that connect with the reflecting surface is in
First inclined surface of curve and from first inclination inclination is carried out towards the reflection surface side and connect with the reflecting surface
The second curved inclined surface of periphery,
Wherein, the reflection graphic patterns further comprise placing prominent to the reflecting surface and being formed in the outer of first inclined surface
The first positive quarter portion and the second sun quarter portion that is prominent to the reflecting surface in the periphery of second inclined surface and being formed,
Wherein, the maximum height in the second sun quarter portion described in the peak height ratio in first sun quarter portion is higher；Along perpendicular to reflection
When the direction observation in face, the area in the second sun quarter portion described in the area ratio in first sun quarter portion is bigger.
2. light guide plate according to claim 1, wherein
When being observed along the direction perpendicular to reflecting surface, the rectangular quadrangle of reflection graphic patterns；
The periphery of first inclined surface and the second inclined surface is the curve heaved on the outside of the right angle quadrangle.
3. light guide plate according to claim 1, wherein
The curvature of the periphery of first inclined surface and the curvature of periphery of second inclined surface are different.
4. light guide plate according to claim 3, wherein
In first inclined surface and the second inclined surface, the curvature from the periphery of the closer inclined surface of the incidence surface is bigger.
5. light guide plate according to claim 3, wherein
In first inclined surface and the second inclined surface, the inclination angle of the bigger inclined surface of the curvature is smaller.
6. light guide plate according to claim 5, wherein
In first inclined surface and the second inclined surface, the smaller inclined surface in inclination angle is located at the position closer from the incidence surface
It sets.
7. light guide plate according to claim 6, wherein
In first inclined surface and the second inclined surface, the inclination angle of the lesser inclined surface in inclination angle is 40~60 degree；
In first inclined surface and the second inclined surface, the inclination angle of the biggish inclined surface in inclination angle is 50~75 degree.
8. light guide plate according to claim 1, wherein
The reflection graphic patterns further comprise forming and being respectively formed at first inclined surface and the to reflecting surface recess
A pair of of side of the two sides of two inclined surface；
The periphery that the pair of side is connected with the reflecting surface respectively is straight line.
9. light guide plate according to claim 1, wherein
The reflection graphic patterns further comprise forming from the reflection towards light-emitting surface inclination and being respectively formed at described the
A pair of of side of the two sides of one inclined surface and the second inclined surface；
The periphery that the pair of side is connected with the reflecting surface respectively is curve.
10. light guide plate according to claim 9, wherein
The boundary that the curvature on the boundary that the side is connected with reflecting surface is connected with first inclined surface and the reflecting surface
The curvature on the boundary that curvature or second inclined surface are connected with the reflecting surface is compared can be smaller.
11. a kind of backlight module comprising light source and light guide plate for irradiation light；
The light guide plate include: with the light source it is opposite thirty years of age and for receive light source irradiation light incidence surface, with it is described enter
The perpendicular and light-emitting surface for projecting incident light to outside of smooth surface, positioned at the back side of the light-emitting surface reflecting surface, with
And it is parallel and be formed in multiple reflection graphic patterns on the reflecting surface with incidence surface；
Reflection graphic patterns include the negative quarter portion to the inner recess of the reflecting surface；
The yin quarter portion includes tilt towards the light-emitting surface from the reflection and the periphery that connect with the reflecting surface is in
First inclined surface of curve and from first inclination inclination is carried out towards the reflection surface side and connect with the reflecting surface
The second curved inclined surface of periphery,
Wherein, the reflection graphic patterns further comprise placing prominent to the reflecting surface and being formed in the outer of first inclined surface
The first positive quarter portion and the second sun quarter portion that is prominent to the reflecting surface in the periphery of second inclined surface and being formed,
Wherein, the maximum height in the second sun quarter portion described in the peak height ratio in first sun quarter portion is higher；Along perpendicular to reflection
When the direction observation in face, the area in the second sun quarter portion described in the area ratio in first sun quarter portion is bigger.
12. backlight module according to claim 11, wherein
When being observed along the direction perpendicular to reflecting surface, the rectangular quadrangle of reflection graphic patterns；
The periphery of first inclined surface and second inclined surface is the curve heaved on the outside of the right angle quadrangle.
13. backlight module according to claim 11, wherein
The curvature of the periphery of first inclined surface and the curvature of periphery of second inclined surface are different.
14. backlight module according to claim 13, wherein
In first inclined surface and second inclined surface, the curvature of the periphery from the closer inclined surface of the incidence surface is more
Greatly.
15. backlight module according to claim 14, wherein
In first inclined surface and second inclined surface, the inclination angle of the bigger inclined surface of the curvature is smaller.
16. backlight module according to claim 15, wherein
In first inclined surface and second inclined surface, the smaller inclined surface in inclination angle is located at closer from the incidence surface
Position.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
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| US201462038723P | 2014-08-18 | 2014-08-18 | |
| US62/038,723 | 2014-08-18 | ||
| KR10-2015-0045741 | 2015-03-31 | ||
| KR1020150045741A KR20160022220A (en) | 2014-08-18 | 2015-03-31 | Light guide plate, backlight unit and display device having the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105572788A CN105572788A (en) | 2016-05-11 |
| CN105572788B true CN105572788B (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510506481.8A Active CN105572783B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate, backlight module and display device containing the light guide plate |
| CN201510506652.7A Active CN105572788B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate, backlight module and display device including the light guide plate |
| CN201510506503.0A Active CN105572963B (en) | 2014-08-18 | 2015-08-18 | A kind of display and its light guide plate |
| CN201510506593.3A Active CN105572786B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate and the backlight module including the light guide plate |
| CN201510506647.6A Active CN105572787B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506581.0A Active CN105572785B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506484.1A Active CN105572784B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510506481.8A Active CN105572783B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate, backlight module and display device containing the light guide plate |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510506503.0A Active CN105572963B (en) | 2014-08-18 | 2015-08-18 | A kind of display and its light guide plate |
| CN201510506593.3A Active CN105572786B (en) | 2014-08-18 | 2015-08-18 | A kind of light guide plate and the backlight module including the light guide plate |
| CN201510506647.6A Active CN105572787B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506581.0A Active CN105572785B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
| CN201510506484.1A Active CN105572784B (en) | 2014-08-18 | 2015-08-18 | Light guide plate, backlight module and display including the light guide plate |
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| Country | Link |
|---|---|
| KR (15) | KR20160022217A (en) |
| CN (7) | CN105572783B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20160022218A (en) | 2016-02-29 |
| CN105572786A (en) | 2016-05-11 |
| KR20160022223A (en) | 2016-02-29 |
| CN105572784B (en) | 2019-01-15 |
| KR20160022213A (en) | 2016-02-29 |
| CN105572787A (en) | 2016-05-11 |
| CN105572783B (en) | 2019-01-15 |
| CN105572785B (en) | 2019-01-15 |
| KR20160022212A (en) | 2016-02-29 |
| CN105572785A (en) | 2016-05-11 |
| KR20160022222A (en) | 2016-02-29 |
| KR20160022225A (en) | 2016-02-29 |
| CN105572963A (en) | 2016-05-11 |
| CN105572786B (en) | 2019-01-15 |
| KR20160022211A (en) | 2016-02-29 |
| KR20160022220A (en) | 2016-02-29 |
| KR20160022217A (en) | 2016-02-29 |
| KR20160022219A (en) | 2016-02-29 |
| CN105572787B (en) | 2019-01-15 |
| KR20160022221A (en) | 2016-02-29 |
| KR20160022224A (en) | 2016-02-29 |
| KR20160022216A (en) | 2016-02-29 |
| KR20160022214A (en) | 2016-02-29 |
| CN105572784A (en) | 2016-05-11 |
| CN105572788A (en) | 2016-05-11 |
| CN105572963B (en) | 2019-04-19 |
| CN105572783A (en) | 2016-05-11 |
| KR20160022215A (en) | 2016-02-29 |
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