CN110068947A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN110068947A CN110068947A CN201910262307.1A CN201910262307A CN110068947A CN 110068947 A CN110068947 A CN 110068947A CN 201910262307 A CN201910262307 A CN 201910262307A CN 110068947 A CN110068947 A CN 110068947A
- Authority
- CN
- China
- Prior art keywords
- blocking layer
- display panel
- color
- array substrate
- color blocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 114
- 230000003287 optical effect Effects 0.000 claims abstract description 59
- 239000010409 thin film Substances 0.000 claims abstract description 22
- 239000010408 film Substances 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 67
- 239000012528 membrane Substances 0.000 claims description 39
- 239000004065 semiconductor Substances 0.000 claims description 18
- 239000004973 liquid crystal related substance Substances 0.000 claims description 13
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 7
- 229910052738 indium Inorganic materials 0.000 claims description 7
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
- Liquid Crystal (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The application discloses display panel includes: the color film substrate is provided with a color resistance layer on one side; the array substrate is positioned on one side of the color film substrate, which is provided with the color resistance layer, and a thin film transistor is arranged on one side of the array substrate, which faces the color film substrate; a plurality of optical fingerprint sensors disposed between the substrate and the array substrate. The application also discloses a display device. The method and the device save the process cost of the display panel, and improve the accuracy and speed of the fingerprint identification technology.
Description
Technical field
This application involves optical finger print identification field more particularly to a kind of display panel and display devices.
Background technique
Fingerprint imaging identification technology, refer to by fingerprint sensor acquire fingerprint image, by collected fingerprint image with
The fingerprint image prestored in system is compared, the technology of Lai Jinhang identification.Since everyone fingerprint is in pattern, breakpoint
With it is different on crosspoint, be it is unique, by this uniqueness and stability, fingerprint imaging identification technology is largely answered
For every field, such as the field of safety check such as public security bureau and customs, the access control system of building and PC and mobile phone etc..
Currently, the imaging mode of fingerprint imaging identification technology has a variety of skills such as optical imagery, capacitance imaging, ultrasonic imaging
Art, but existing fingerprint imaging identification technology it is generally existing it is at high cost, accuracy rate is low, slow-footed problem.
Above content is only arranged at the technical solution that auxiliary understands the application, does not represent and recognizes that above content is existing skill
Art.
Summary of the invention
The main object of the present invention is to propose a kind of display panel and display device, it is intended to the technique for saving display panel
Cost, and promote the accuracy and speed of fingerprint identification technology.
To achieve the above object, the present invention provides a kind of display panel, and the display panel includes:
Color membrane substrates, the color membrane substrates side are provided with color blocking layer；
Array substrate is provided with the side of the color blocking layer positioned at the color membrane substrates, and the array substrate is described in
The side of color membrane substrates is provided with thin film transistor (TFT)；
Multiple optical fingerprint sensors, the optical fingerprint sensor are set to the color membrane substrates and the array base
Between plate.
Optionally, the thin film transistor (TFT) is indium gallium zinc transistor.
Optionally, the color blocking layer includes spaced red color resistance layer, green color blocking layer and blue color blocking layer, institute
It states optical fingerprint sensor and is located at the red color resistance layer, green color blocking layer and blue color blocking layer in the throwing of the array substrate
In the domain of shadow zone.
Optionally, black color blocking layer is provided between the red color resistance layer, green color blocking layer and blue color blocking layer.
Optionally, liquid crystal layer is provided between the color blocking layer and the thin film transistor (TFT).
Optionally, the color blocking layer is provided with light collecting portion close to the side of the array substrate.
Optionally, the light collecting portion includes at least one transparent lug boss, and the transparent lug boss is along the color film base
Plate is directed toward the direction protrusion of the array substrate, and the refractive index of the light collecting portion is greater than the refractive index of the liquid crystal layer.
Optionally, the optical fingerprint sensor includes switch and photodiode, the photodiode include PN junction,
The PN junction includes N-type semiconductor portion and P-type semiconductor portion, and the active layer of the switch is multiplexed with the N-type semiconductor portion, institute
It states P-type semiconductor portion and is located at the side surface that the N-type semiconductor portion deviates from the array substrate.
Optionally, the array substrate is provided with backlight away from the side of the thin film transistor (TFT).
To achieve the above object, the present invention provides a kind of display device, including display panel, and the display panel includes:
Color membrane substrates, the substrate side are provided with color blocking layer；
Array substrate is provided with the side of the color blocking layer positioned at the color membrane substrates, and the array substrate is described in
The side of color membrane substrates is provided with thin film transistor (TFT), and the thin film transistor (TFT) is indium gallium zinc transistor；
Multiple optical fingerprint sensors, the optical fingerprint sensor be set to the substrate and the array substrate it
Between.
The present invention provides a kind of display panel, comprising: color membrane substrates, the color membrane substrates side are provided with color blocking layer；Battle array
Column substrate, is provided with the side of the color blocking layer positioned at the color membrane substrates, and the array substrate is towards the color membrane substrates
Side is provided with thin film transistor (TFT)；Multiple optical fingerprint sensors, the optical fingerprint sensor are set to the color membrane substrates
And between the array substrate.The application saves the process costs of display panel, and improves fingerprint identification technology
Accuracy and speed.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is a kind of the schematic diagram of the section structure of display panel provided by the invention；
Fig. 2 is the action principle schematic diagram of optical fingerprint sensor；
Fig. 3 is the diagrammatic cross-section of another display panel provided by the invention；
Fig. 4 is the diagrammatic cross-section of another display panel provided by the invention；
Fig. 5 is the action principle schematic diagram of light collecting portion 40 in Fig. 4；
Fig. 6 is the diagrammatic cross-section of another display panel provided by the invention；
Fig. 7 is the electrical block diagram of optical fingerprint sensor in the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
In one embodiment, referring to Fig.1, a kind of display panel proposed by the present invention includes: color membrane substrates 200, the coloured silk
200 side of ilm substrate is provided with color blocking layer 50；Array substrate 100 is provided with the color blocking layer 50 positioned at the color membrane substrates 200
Side, the side of the array substrate 100 towards the color membrane substrates 200 is provided with thin film transistor (TFT) 20；Multiple optics refer to
Line sensor 70, the optical fingerprint sensor 70 are set between the color membrane substrates 200 and the array substrate 100.
In the present embodiment, referring to FIG. 2, the fingerprint recognition principle of optical fingerprint sensor 70 is as follows: the fingerprint tool of finger
There are ridge (Ridge) and paddy (Valley), when finger presses on a display panel, ridge is contacted with panel surface, Gu Buyu
Panel surface contact, reflectivity when light being caused to be irradiated to the corresponding display panel of valley and a ridge of fingerprint is different, in turn
Cause the reflected light formed at the position of ridge and the reflection formed at the position of paddy that optical fingerprint sensor 70 receives
The intensity of light is different, correspondingly, the reflected light formed at the position of ridge and the reflected light formed at the position of paddy are in optics
It is of different sizes that photoelectric current is converted into fingerprint sensor 70.It can carry out identifying ridge and the paddy of fingerprint according to photoelectric current size,
The size of current of multiple optical fingerprint sensors 70 is integrated, and can identify finger print information.
Further, referring to Fig. 3, display panel provided in this embodiment can be liquid crystal display panel, including color membrane substrates
200, array substrate 100 and liquid crystal layer 300, liquid crystal layer 300 are sealed between color membrane substrates 200 and array substrate 100, into one
Step, liquid crystal layer 300 is between color blocking layer 50 and thin film transistor (TFT) 20.
Array substrate 100 includes the first substrate 110, and the first substrate 110 can be transparent material, to avoid the saturating of light is influenced
Cross rate.First substrate 110 can be flexible substrate, for example be made using resin material, can also be rigid substrate, for example use glass
Material production, the present invention is not specifically limited.First substrate 110 is for carrying optical fingerprint sensor 70.
Optical fingerprint sensor 70 is light-sensitive device, can light sensing, and convert optical signal into electric signal.According to light
The power of line is different, and the size for the electric signal that optical fingerprint sensor 70 converts is also different, and light is stronger, and electric signal is bigger, light
Line is weaker, and electric signal is smaller.
Color membrane substrates 200 include the second substrate 210, and the second substrate 210 can be transparent material, to avoid the saturating of light is influenced
Cross rate.Second substrate 210 can be flexible substrate, for example be made using resin material, can also be rigid substrate, for example use glass
Material production, the present invention is not specifically limited.
Referring to Fig. 6, color blocking layer 50 is provided on the second substrate 210, the color blocking layer 50 includes spaced red color
Resistance layer 50R, green color blocking layer 50G and blue color blocking layer 50B, the optical fingerprint sensor 70 are located at the red color resistance layer
50R, green color blocking layer 50G and blue color blocking layer 50B are in the view field of the array substrate 100.The color blocking layer 50
With filter action.
Further, it is provided between the red color resistance layer 50R, green color blocking layer 50G and blue color blocking layer 50B black
Color color blocking layer 30.Black color blocking layer 30 has stronger light absorption ability, mainly prevents the leakage between the pixel of display panel
Light, and increase the contrast of color, promote display effect.
Further, the black color blocking layer 30 (is not schemed away from the settable reflecting layer in a side surface of the second substrate 210
Show).Metal material production, such as metallic silver can be used in reflecting layer reflectivity with higher for light.It is shown in production
When panel, reflecting layer can be formed in 30 surface metallization material of black color blocking layer after the black color blocking layer 30 that completes.
When carrying out fingerprint recognition, some light exposes to reflecting layer after array substrate 100, liquid crystal layer 300, anti-by reflecting layer
Light a part after penetrating exposes to optical fingerprint sensor 70, exposes to optical fingerprint sensor 70 to further increase
Light, the accuracy of fingerprint recognition is further improved, so that the user experience is improved.
Further, color membrane substrates 200 may also include insulating layer (not shown), and the color blocking layer 50 is close to the array base
The side of plate 100 is provided with light collecting portion 40, is provided with insulating layer between the light collecting portion 40 and the color blocking layer 50.Insulating layer one
Aspect has the performance of insulation, can protect color blocking layer 50 and black color blocking layer 30；On the other hand, insulating layer can smooth color blocking
The segment difference that layer 50 and black color blocking layer 30 are formed.Insulating layer can be made of organic material or inorganic material, and the present invention is not
It is specifically limited.
Optionally, the side of the array substrate 100 towards the color membrane substrates 200 is provided with thin film transistor (TFT) 20, institute
Stating thin film transistor (TFT) 20 is indium gallium zinc transistor.Indium gallium zinc transistor has the advantages that reading speed is fast, therefore can
Promote the signal-obtaining speed of display panel.
Display panel provided in this embodiment at least has following the utility model has the advantages that display panel includes: color membrane substrates,
The color membrane substrates side is provided with color blocking layer；Array substrate is provided with the side of the color blocking layer positioned at the color membrane substrates,
The side of the array substrate towards the color membrane substrates is provided with thin film transistor (TFT)；Multiple optical fingerprint sensors, the light
Fingerprint sensor is learned to be set between the color membrane substrates and the array substrate.Thin film transistor (TFT) 20 is integrated in array base
On plate 100, is conducive to the process costs for saving display panel, promotes the accuracy and speed of fingerprint recognition, and be conducive to show
Show the lightening of panel.
In one embodiment, referring to Fig. 3, on the basis of the above embodiments, the color blocking layer is close to the array substrate
100 side is provided with light collecting portion 40.
In the present embodiment, light collecting portion 40 has the function of converging light, can increase and expose to optical fingerprint sensor 70
Light intensity, to increase the sensitivity of optical fingerprint sensor 70.Specifically, light collecting portion 40 includes at least one transparent protrusion
Portion 41, the higher material production of light penetration can be used in the transparent lug boss 41, to play the role of converging light.
Specifically, referring to Fig. 4, the fingerprint of finger F I has ridge 401 and paddy 402.When finger F I is pressed on a display panel
When, ridge 401 is contacted with panel surface, and paddy 402 does not contact with panel surface.Light L is irradiated to 402 corresponding position of paddy
Panel surface when, reflectivity is higher, and part reflection light successively exposes to after the second substrate 210, color blocking layer 50
Light collecting portion 40, light collecting portion 40 converge light.Since optical fingerprint sensor 70 and light collecting portion 40 overlap mutually in a direction z, i.e.,
It is located at the lower section of light collecting portion 40, that is, the light direction of the light after the convergence of light collecting portion 40 for optical fingerprint sensor 70
On, thus through light collecting portion 40 convergence after beam projecting after can expose to optical fingerprint sensor 70, thus increase expose to
The intensity of the light of optical fingerprint sensor 70.The light intensity of optical fingerprint sensor 70 sensed is bigger, optical finger print
Sensor 70 is sensitiveer, and the current signal converted accordingly is bigger.Biggish current signal is conducive to be received identification, thus mentions
Rise the accuracy of fingerprint recognition.
In the present embodiment, the refractive index of light collecting portion 40 is greater than the refractive index of liquid crystal layer 300, and in other words, light collecting portion 40 is light
Close medium, liquid crystal layer 300 is optically thinner medium, and when light injects optically thinner medium by optically denser medium, refraction angle is greater than incidence angle, can be made
It is larger from the angle (as refraction angle) of 40 emergent ray of light collecting portion, and towards the direction where optical fingerprint sensor 70.
Specifically, referring to Fig. 4 and Fig. 5.When light L is irradiated to the panel surface of 402 corresponding position of paddy, reflectivity compared with
Height, part reflection light successively expose to light collecting portion 40 after the second substrate 210, color blocking layer 50, and reflection light is from light collecting portion
When 40 outgoing, refraction angle r is greater than incidence angle i, so that the direction where emergent ray towards optical fingerprint sensor 70 is propagated, from
And be conducive to that optical fingerprint sensor 70 is made to receive more light.Optionally, the refractive index of light collecting portion 40 between 1.4 to
Between 1.9.The ranges of indices of refraction of light collecting portion 40 is arranged between 1.4-1.9, on the one hand, the refractive index of light collecting portion 40 can be made
Greater than the refractive index (refractive index of liquid crystal layer 300 is usually less than 1.4) of liquid crystal layer 300, on the other hand, the refractive index of light collecting portion 40
It may be such that refraction angle is excessive greater than 1.9, to be unfavorable for being received by optical fingerprint sensor 70.
It, can be to avoid it should be noted that black color blocking layer 30 is arranged in close to the side of array substrate 100 in light collecting portion 40
It is absorbed after beam projecting after the convergence of light collecting portion 40 by black color blocking layer 30.Optionally, in a direction z, black color blocking layer 30
Cover light collecting portion 40.It is unglazed in the region where black color blocking layer 30 since black color blocking layer 30 is with light-absorbing effect
Line outgoing can avoid light collecting portion 40 and normally be emitted in other positions influence light, and avoids influencing the transmission of display panel
Rate.
Further, light collecting portion 40 includes at least one transparent lug boss 41, and optionally, the quantity of transparent lug boss 41 is
Two.It can be configured in practical applications according to the size of light collecting portion 40, the factors such as sensitivity of optical fingerprint sensor 70,
The present invention is not specifically limited.
Display panel provided in this embodiment, at least with following the utility model has the advantages that display panel, comprising: color membrane substrates,
The color membrane substrates side is provided with color blocking layer, and the color blocking layer is provided with light collecting portion close to the side of the array substrate, collection
Light portion has the function of that convergence light, including at least one transparent lug boss, transparent lug boss have the function of converging light, can
Increase the light intensity for exposing to optical fingerprint sensor.The light intensity that optical fingerprint sensor senses is bigger, and optics refers to
Line sensor is sensitiveer, and the current signal converted accordingly is bigger.Biggish current signal is conducive to be received identification, thus mentions
The accuracy for rising fingerprint recognition, to promote user experience.
As one embodiment, referring to Fig. 7, on the basis of embodiment described in any of the above embodiments, the optical finger print
Sensor 70 includes switch 21 and photodiode 22.
In the present embodiment, optical fingerprint sensor 70 includes switch 21 and photodiode 22, switch 21 and photosensitive two pole
Pipe 22 is electrically connected.
First switch 21 includes grid 21a, source electrode 21b, drain electrode 21c, active layer 21d, wherein active layer 21d is carried out
Extension design is multiplexed with the N-type semiconductor portion 22N of PN junction.Specifically, active layer 21d continuation is close to P-type semiconductor portion 22P
The side of first substrate 110 and with P-type semiconductor portion 22P be electrically connected, thus can reduce production optical fingerprint sensor 70
Manufacturing process, and be conducive to the lightening of display panel.Optionally, common electrode layer 140 and P-type semiconductor portion 22P electricity
Connection, for providing voltage signal to PN junction.The grid 21a of switch 21 receives control signal, and control signal is used for control switch
21 on or off；First pole 21b of switch 21 receives voltage signal.
Optionally, the photodiode 22 is organic photodetector.The core component of photodiode 22 is PN junction,
PN junction is close by a N-doped zone (i.e. N-type semiconductor portion 22N) and a P-doped zone (i.e. P-type semiconductor portion 22P)
What contact was constituted.PN junction has light sensitive characteristic, and has unilateral conduction.When no light, PN junction has the saturation of very little anti-
To leakage current, i.e. dark current, photodiode ends at this time.When by illumination, the saturation reverse leakage current of PN junction increases greatly
Add, form electric current, electric current changes with the variation of incident intensity.
Optionally, optical fingerprint sensor 70 further includes capacitance part DC, and the of a pole plate of capacitance part DC and switch 21
Two pole 21c electrical connection, another pole plate and photodiode 22 are electrically connected.
The fingerprint recognition principle of optical fingerprint sensor 70 is as follows:
In the fingerprint recognition stage, node H1 inputs low voltage signal, and the first pole 21b of switch 21 receives high voltage signal.
The fingerprint recognition stage includes preparation stage, fingerprint signal acquisition phase and fingerprint signal detection-phase.
In the preparation stage, the switch 21 of the control signal control optical fingerprint sensor 70 of the grid 21a of switch 21 is connected,
Capacitance part DC charging, until capacitance part DC charging complete.
In fingerprint signal acquisition phase, the switch 21 for controlling optical fingerprint sensor 70 is closed.Finger is pressed in user
When on a display panel, light is irradiated on finger, and forms reflected light in the surface reflection of finger print.It is anti-through finger print
It penetrates the reflected light to be formed to be incident in optical fingerprint sensor 70, be received by the photodiode 22 of optical fingerprint sensor 70,
Photoelectric current is formed, the direction of the photoelectric current is to be directed toward node H1 by node H2, so that the current potential of H2 changes.
It, can the directly potential change amount of detection node H2, and then the size of determining photoelectric current in fingerprint signal detection-phase.
In fingerprint signal detection-phase, the switch 21 that can also control optical fingerprint sensor 70 is opened, at this time two electrode of capacitance part DC
Between there are potential difference, capacitance part DC is in charged state, by detecting the quantity of electric charge that is filled with of capacitance part DC, and then determines photoelectricity
The size of stream.
Display panel provided in this embodiment at least has following the utility model has the advantages that active layer continuation is to P-type semiconductor portion
Close to array substrate side and with P-type semiconductor portion be electrically connected, thus can reduce production optical fingerprint sensor work
Skill processing procedure, and be conducive to the lightening of display panel.
To achieve the above object, the present invention also provides a kind of display device, including display panel, the display panel packets
Include: color membrane substrates 200, the substrate side are provided with color blocking layer；Array substrate 100 is provided with positioned at the color membrane substrates 200
The side of the side of the color blocking layer, the array substrate 100 towards the color membrane substrates 200 is provided with thin film transistor (TFT) 20,
The thin film transistor (TFT) 20 is indium gallium zinc transistor；Multiple optical fingerprint sensors 70, the optical fingerprint sensor 70
It is set between the substrate and the array substrate 100.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of display panel, which is characterized in that the display panel includes:
Color membrane substrates, the color membrane substrates side are provided with color blocking layer；
Array substrate, is provided with the side of the color blocking layer positioned at the color membrane substrates, and the array substrate is towards the color film
The side of substrate is provided with thin film transistor (TFT)；
Multiple optical fingerprint sensors, the optical fingerprint sensor be set to the color membrane substrates and the array substrate it
Between.
2. display panel as described in claim 1, which is characterized in that the thin film transistor (TFT) is indium gallium zinc transistor.
3. display panel as described in claim 1, which is characterized in that the color blocking layer includes spaced red color resistance
Layer, green color blocking layer and blue color blocking layer, the optical fingerprint sensor be located at the red color resistance layer, green color blocking layer with
And blue color blocking layer is in the view field of the array substrate.
4. display panel as claimed in claim 3, which is characterized in that the red color resistance layer, green color blocking layer and blue
Black color blocking layer is provided between color blocking layer.
5. display panel as claimed in claim 4, which is characterized in that be arranged between the color blocking layer and the thin film transistor (TFT)
There is liquid crystal layer.
6. display panel as claimed in claim 5, which is characterized in that the color blocking layer is set close to the side of the array substrate
It is equipped with light collecting portion.
7. display panel as claimed in claim 6, which is characterized in that the light collecting portion includes at least one transparent lug boss,
The transparent lug boss is directed toward the direction protrusion of the array substrate along the color membrane substrates, and the refractive index of the light collecting portion is big
In the refractive index of the liquid crystal layer.
8. display panel as described in claim 1, which is characterized in that the optical fingerprint sensor includes switch and photosensitive two
Pole pipe, the photodiode include PN junction, and the PN junction includes N-type semiconductor portion and P-type semiconductor portion, and the switch has
Active layer is multiplexed with the N-type semiconductor portion, and the P-type semiconductor portion is located at the N-type semiconductor portion away from the array substrate
A side surface.
9. display panel as described in claim 1, which is characterized in that the array substrate deviates from the one of the thin film transistor (TFT)
Side is provided with backlight.
10. a kind of display device, which is characterized in that including display panel, the display panel includes:
Color membrane substrates, the substrate side are provided with color blocking layer；
Array substrate, is provided with the side of the color blocking layer positioned at the color membrane substrates, and the array substrate is towards the color film
The side of substrate is provided with thin film transistor (TFT), and the thin film transistor (TFT) is indium gallium zinc transistor；
Multiple optical fingerprint sensors, the optical fingerprint sensor are set between the substrate and the array substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262307.1A CN110068947A (en) | 2019-04-02 | 2019-04-02 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262307.1A CN110068947A (en) | 2019-04-02 | 2019-04-02 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110068947A true CN110068947A (en) | 2019-07-30 |
Family
ID=67366956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910262307.1A Pending CN110068947A (en) | 2019-04-02 | 2019-04-02 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110068947A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111160323A (en) * | 2020-02-19 | 2020-05-15 | 武汉华星光电技术有限公司 | Display panel and electronic device |
| CN111258101A (en) * | 2020-03-18 | 2020-06-09 | 武汉华星光电技术有限公司 | Display device |
| US12089474B2 (en) | 2020-04-27 | 2024-09-10 | Boe Technology Group Co., Ltd. | Texture recognition apparatus and opposite substrate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109446941A (en) * | 2018-10-15 | 2019-03-08 | 武汉华星光电半导体显示技术有限公司 | Display device and preparation method thereof |
| CN109447046A (en) * | 2018-12-27 | 2019-03-08 | 厦门天马微电子有限公司 | Display panel and display device |
| CN109508135A (en) * | 2017-09-15 | 2019-03-22 | 上海耕岩智能科技有限公司 | A kind of electronic equipment execution command method and electronic equipment based on fingerprint recognition |
-
2019
- 2019-04-02 CN CN201910262307.1A patent/CN110068947A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109508135A (en) * | 2017-09-15 | 2019-03-22 | 上海耕岩智能科技有限公司 | A kind of electronic equipment execution command method and electronic equipment based on fingerprint recognition |
| CN109446941A (en) * | 2018-10-15 | 2019-03-08 | 武汉华星光电半导体显示技术有限公司 | Display device and preparation method thereof |
| CN109447046A (en) * | 2018-12-27 | 2019-03-08 | 厦门天马微电子有限公司 | Display panel and display device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111160323A (en) * | 2020-02-19 | 2020-05-15 | 武汉华星光电技术有限公司 | Display panel and electronic device |
| CN111160323B (en) * | 2020-02-19 | 2023-08-01 | 武汉华星光电技术有限公司 | Display panel and electronic device |
| US11971621B2 (en) | 2020-02-19 | 2024-04-30 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Display panel and electronic device |
| CN111258101A (en) * | 2020-03-18 | 2020-06-09 | 武汉华星光电技术有限公司 | Display device |
| US12089474B2 (en) | 2020-04-27 | 2024-09-10 | Boe Technology Group Co., Ltd. | Texture recognition apparatus and opposite substrate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109445161B (en) | Display panel and display device | |
| US11150505B2 (en) | Display panel and display device | |
| TWI612647B (en) | Optoelectric sensor | |
| US10585304B2 (en) | Array substrate and method for fabricating the same, display apparatus | |
| CN109713003B (en) | Display panel and display device | |
| CN107230698B (en) | Display panel and display device | |
| CN105336751B (en) | photoelectric sensor and its manufacturing method | |
| CN107480639A (en) | Touch display panel and display device | |
| CN112236774B (en) | Grain recognition device and driving method thereof | |
| CN110068947A (en) | Display panel and display device | |
| EP3032584A2 (en) | Photoelectric conversion device and electronic apparatus | |
| CN111812900B (en) | Display device and control method thereof | |
| CN112596294A (en) | Display device, display panel and manufacturing method thereof | |
| CN111653599B (en) | Fingerprint identification display panel and display device | |
| CN113690271B (en) | Display substrate and display device | |
| CN111160323A (en) | Display panel and electronic device | |
| WO2021136342A1 (en) | Fingerprint recognition device, fingerprint recognition display substrate, and fabrication method therefor | |
| US12062248B2 (en) | Display panel and display device | |
| WO2021253529A1 (en) | Display panel and display device | |
| CN115552488A (en) | Grain recognition device and manufacturing method thereof, color film substrate and manufacturing method thereof | |
| CN112993184B (en) | Display substrate and display device | |
| CN110287920B (en) | Display panel and display device | |
| CN111898397B (en) | Grain recognition device | |
| US12089474B2 (en) | Texture recognition apparatus and opposite substrate | |
| CN210864750U (en) | Fingerprint detection device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190730 |
|
| RJ01 | Rejection of invention patent application after publication |