CN100430798C - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
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- CN100430798C CN100430798C CNB200610137484XA CN200610137484A CN100430798C CN 100430798 C CN100430798 C CN 100430798C CN B200610137484X A CNB200610137484X A CN B200610137484XA CN 200610137484 A CN200610137484 A CN 200610137484A CN 100430798 C CN100430798 C CN 100430798C
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- refraction block
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Abstract
An LCD display includes: backlight, the first polarizer that is installed at the top backlight, the first transparent substrate that is installed at the top of the first polarizer, collector array that is installed at the surface of the first transparent substrate polarizer and adjacent to the first polarizer, and each collector array includes: a first refractive block and a number of second high refractive blocks that is located on two sides of the first block, and the two second blocks in the symmetry position have the same width. There is a low refractive block between one first and one second high refractive block, and the width of the first is greater than the second. The second transparent substrate is installed on the top of the first one and has the transparent area that is allocated corresponding to collector array. The LCD layer is located between the first and second transparent substrate. A second polarizer is installed at the top of the second transparent substrate. The invention can effectively lower the leaky light phenomenon when dark.
Description
Technical field
The invention relates to a kind of LCD, and particularly relevant for a kind of LCD of high brightness.
Background technology
The photoelectricity correlation technique is constantly weeded out the old and bring forth the new in recent years, adds the arrival of digital times, and then has promoted the flourish of LCD market.LCD (Liquid Crystal Displayer; LCD) have that high image quality, volume are little, in light weight, advantage such as low voltage drive, low consumpting power and applied range, therefore be widely used in consumer electronics or computer products such as Portable TV, mobile phone, mobile computer and desktop display, and replace cathode-ray tube (CRT) (Cathode RayTube gradually; CRT) become the main flow of display.
Because liquid crystal itself can't be luminous, therefore need to use backlight module to supply light source, just can reach display effect.Traditional LCD major part is (Back-light) backlight type LCD, mainly comprises the display panels of front end and the backlight module of rear end.
The brightness of LCD is that important one of the project of considering is gone up in design, and traditionally, the method for the brightness of raising LCD is nothing more than being the increase aperture opening ratio or using brightness enhancement film in backlight module.Yet, when improving the brightness of LCD, not only can improve the difficulty of manufacturing process as if the mode of utilizing the increase aperture opening ratio, also have the problem that increases cost burden simultaneously.But,, can derive other problem again if when in backlight module, using many blooming pieces to improve brightness.For example, in the process that light is transmitting, light not only can be partially absorbed by these blooming pieces and reduce outside the utilization rate of light, more can cause the burden of material and assembly cost because of using many blooming pieces.And these blooming pieces more may cause drawing together between the blooming piece to wipe and damage, and then increase the burden of cost when carry out the reliability test.In addition,, then be easy to generate interference fringe, folded line effect (moire effect) take place, and cause visual defective if during these blooming piece mis-arranges.
In view of this, United States Patent (USP) the 6th, 421, No. 105 a kind of methods of improving above-mentioned shortcoming of proposition, make lenticule (micro lens) array on the surface of its top glass substrate in display panels, utilize lenticular curved-surface structure to improve the brightness of LCD.Yet the maximum difficulty of the method is, because lenticular size is the following size of micron order, and its surface structure is curved-surface structure, so be not easy control on making.Moreover, because of being subject to lenticular size and structure, so can't strengthen the brightness of LCD more more by the curvature that increases lenticular curved-surface structure.
Therefore, how under the situation of burden that reduces cost, and can not increase the difficulty of manufacturing process control simultaneously, and then the brightness that improves LCD, be one of emphasis of research and development at present.
Summary of the invention
Purpose of the present invention is providing a kind of LCD exactly, can be in order to reducing the optical loss that produces because of shading region, and then the brightness that improves LCD.
Another object of the present invention is that a kind of LCD is being provided, and can reduce the phenomenon of dark attitude light leak effectively, to increase the contrast of LCD.
Another purpose of the present invention is a kind of LCD to be provided, can to reduce the usage quantity of brightness enhancement film, and then the burden that reduces cost.
One at least according in the above-mentioned purpose of the present invention proposes a kind of LCD.Above-mentioned LCD comprises backlight, macromolecule membranous layer and display panels, and macromolecule membranous layer is positioned under the display panels, on the backlight.Wherein, macromolecule membranous layer has a plurality of optically focused arrays, and each optically focused array comprises a plurality of high index of refraction blocks.Wherein a wideest high index of refraction block places central authorities, and all the other high index of refraction block symmetries are respectively in the wideest high index of refraction block both sides.And the two high-index regions pieces that are positioned at symmetric position have identical width, and the high index of refraction block is low-refraction block institute disjunction between any two.Display panels has a plurality of light-permeables district and a plurality of shading region, and each optically focused array is arranged in pairs or groups a light-permeable district and is provided with, and the light-permeable district is arranged in the top of the optically focused array of macromolecule membranous layer.
Wherein, when light pass each the optically focused array in the macromolecule membranous layer and arrive high index of refraction block in the optically focused array and the interface of low-refraction block on the time, can form reflex on the interface of high index of refraction block and low-refraction block, and can produce the effect of optically focused by the light of optically focused array, make light concentrate in the light-permeable district of display panels, and then improve the brightness of LCD.Therefore, macromolecule membranous layer is not only an optically focused rete with spotlight effect, more the optically focused array in the macromolecule membranous layer can be considered as the convex lens with concentrated light field function.
According to a preferred embodiment of the present invention, the width that is positioned at the high index of refraction block of the wideest high index of refraction block one side phases down towards the direction away from the wideest high index of refraction block.And in preferred embodiment of the present invention, the optically focused array is preferably has five high index of refraction blocks, and its arrangement mode is the 3rd high index of refraction block, the second high index of refraction block, the first high index of refraction block, the second high index of refraction block and the 3rd high index of refraction block from left to right in regular turn.Wherein, the width of the first high index of refraction block is greater than the second high index of refraction block, and the width of the second high index of refraction block is greater than the 3rd high index of refraction block.
Therefore, the present invention utilizes light need satisfy refraction law (Snell ' s Law) on the interface of the medium of different refractivity, when allowing incident light pass through on the interface of medium of different refractivity, produce reflex and light is reflexed in the light-permeable district of display panels, with the fiber-loss of minimizing because of the process shading region, and then the utilization rate of increase light.Moreover, because the size of the high index of refraction block in the optically focused array of the present invention is below the micro/nano level, add the arrangement mode of high index of refraction block again, so when the structure of light by optically focused array of the present invention, can make the function of light generation optically focused, with the brightness of further raising LCD.
In addition, use the phenomenon that method of the present invention can reduce dark attitude light leak effectively, to increase the contrast of LCD.And method of the present invention not only can reduce the usage quantity of brightness enhancement film, and burden more can reduce cost.Method of the present invention more can allow the light that passes the low-refraction block, produces the effect of refraction on the interface of the medium of different refractivity, makes light more effectively concentrate on the light-permeable district, further to improve the brightness of LCD.
Description of drawings
Figure 1A represents the cross-sectional view according to a kind of LCD of a preferred embodiment of the present invention.
Figure 1B represents the local enlarged diagram of the optically focused array in the macromolecule membranous layer of Figure 1A.
Fig. 2 represents the cross-sectional view according to a kind of LCD of a preferred embodiment of the present invention.
Fig. 3 A represents the cross-sectional view according to a kind of LCD of a preferred embodiment of the present invention.
The local enlarged diagram of the optically focused array on first transparency carrier of Fig. 3 B presentation graphs 3A.
Fig. 4 A represents the local amplification plan view according to the optically focused array in first transparency carrier of a preferred embodiment of the present invention.
Fig. 4 B represents the local amplification plan view that optically focused array and diverging light array are set respectively of a preferred embodiment of the present invention in first transparency carrier and second transparency carrier.
Fig. 5 represents the cross-sectional view according to a kind of LCD of a preferred embodiment of the present invention.
The local enlarged diagram of the high index of refraction block in the optically focused array among Fig. 6 presentation graphs 3A on first transparency carrier.
The local enlarged diagram of the high index of refraction block in the optically focused array among Fig. 7 presentation graphs 3A on first transparency carrier.
Fig. 8 A to Fig. 8 D represents the structural representation of making the manufacturing technology steps of macromolecule membranous layer on transparency carrier according to a preferred embodiment of the present invention.
Fig. 9 A to Fig. 9 E, expression is according to the structural representation of making the manufacturing technology steps of optically focused array on transparency carrier of another preferred embodiment of the present invention.
Fig. 9 F represents the structural representation of making the optically focused array on transparency carrier according to a preferred embodiment of the present invention.
Figure 10 A to Figure 10 D represents the structural representation of making the manufacturing technology steps of high index of refraction block on transparency carrier according to a preferred embodiment more of the present invention.
Accompanying drawing is mainly numbered explanation
100,300,500: LCD
102,302,502: backlight
103,303,403,503,603,703,803: the optically focused array
104,304,504: the first Polarizers
105,305,405,605: the high index of refraction block
106,306,406,506: the first transparency carriers
107,415,507,607,707: the low-refraction block
108: macromolecule membranous layer
110,310,510: liquid crystal layer
112,312,512: colored filter
112a, 312a, 512a: light-permeable district
112b, 312b, 512b: shading region
114,314,414,514: the second transparency carriers
116,316,516: the second Polarizers
105a, 305a, 405a, 705a, 805a: the first high index of refraction block
105b, 305b, 405b, 705b, 805b: the second high index of refraction block
105c, 305c, 405c, 705c, 805c: the 3rd high index of refraction block
301,301a: incident light
307: surface of contact
309,309a: light
405d: the 4th high index of refraction block
405e: the 5th high index of refraction block
602,702,802: transparency carrier
604: macromolecule membranous layer
606: light shield
608: ultraviolet light
704: photoresist layer
706,804: the patterning photoresist layer
708,806: groove
710: macromolecular material
808: Polarizer
810: adhesion layer
h
1, h
2, h
3: length
L
1, L
2, L
3: width
X
1, X
2, X
3: spacing
θ
1: incident angle
k
1, k
2, k
3: width
P
1, P
2, P
3: width
n
1, n
2: refractive index
θ
2: the refraction angle
Embodiment
Please refer to Figure 1A, its expression is according to the cross-sectional view of a kind of LCD of a preferred embodiment of the present invention.In Figure 1A, LCD 100 comprises backlight 102, macromolecule membranous layer 108, first Polarizer 104, first transparency carrier 106, liquid crystal layer 110, colored filter 112, second transparency carrier 114 and second Polarizer 116 in regular turn.Wherein, macromolecule membranous layer 108 has a plurality of optically focused arrays 103, and optically focused array 103 is made up of with a plurality of low-refraction block 107 a plurality of high index of refraction blocks 105.Above-mentioned colored filter 112 more comprises light-permeable district 112a and shading region 112b, and optically focused array 103 is arranged in pairs or groups light-permeable district 112a and is provided with, and light-permeable district 112a is arranged in the top of the optically focused array 103 of macromolecule membranous layer 108.The surface area that light-permeable district 112a occupies colored filter 112 is preferably and equals the surface area that optically focused array 103 occupies macromolecule membranous layer 108.
Please refer to Figure 1B, the local enlarged diagram of the optically focused array in the macromolecule membranous layer of its expression Figure 1A.In Figure 1B, optically focused array 103 is made up of with a plurality of low-refraction block 107 a plurality of high index of refraction blocks 105, and the high index of refraction block in the optically focused array 103 105 is crisscross arranged with low-refraction block 107.Wherein, above-mentioned high index of refraction block 105 more comprises the first high index of refraction block 105a, the second high index of refraction block 105b and the 3rd high index of refraction block 105c, and the first high index of refraction block 105a, the second high index of refraction block 105b and the 3rd high index of refraction block 105c have identical refractive index.The width of the first high index of refraction block 105a, the second high index of refraction block 105b and the 3rd high index of refraction block 105c is L in regular turn
1, L
2, and L
3, and the width L of the first high index of refraction block 105a
1Width L greater than the second high index of refraction block 105b
2, the width L of the second high index of refraction block 105b
2Greater than the 3rd high index of refraction block 105c width L
3In preferred embodiment of the present invention, the width ratio of the first high index of refraction block 105a, the second high index of refraction block 105b and the 3rd high index of refraction block 105c is preferably 9: 4: 1, but not as limit.
Referring again to Figure 1B, the symmetrical in regular turn both sides that are respectively in the first high index of refraction block 105a of second above-mentioned high index of refraction block 105b and the 3rd high index of refraction block 105c, the arrangement mode that is to say the high index of refraction block 105 in the optically focused array 103 is the 3rd high index of refraction block 105c, the second high index of refraction block 105b, the first high index of refraction block 105a, the second high index of refraction block 105b and the 3rd high index of refraction block 105c from left to right in regular turn.
The preferable material of macromolecule membranous layer 108 is macromolecular materials, and its preferred thickness is between 5 μ m to 300 μ m.The preferable refractive index of high index of refraction block 105 is between 1.4 to 1.8, and the refractive index of low-refraction block 107 is preferable approximately between 1.2 to 1.55.In addition, in a preferred embodiment of the present invention, the refractive index of first Polarizer 104 is preferably the refractive index greater than the high index of refraction block 105 in the macromolecule membranous layer 108, further improving the utilization rate of light, but not in order to limit scope of the present invention.
In another preferred embodiment of the present invention, as shown in Figure 2, also macromolecule membranous layer 108 can be arranged under first transparency carrier 106, on first Polarizer 104, but not in order to limit scope of the present invention.Because the arrangement mode of the preferable material of macromolecule membranous layer 108 and the high index of refraction block in the optically focused array 103 105 and low-refraction block 107 is all as the macromolecule membranous layer 108 of above-mentioned preferred embodiment, so do not add to give unnecessary details at this.
Please refer to Fig. 3 A, its expression is according to the present invention's cross-sectional view of a kind of LCD of a preferred embodiment again.In Fig. 3 A, LCD 300 comprises backlight 302, first Polarizer 304, first transparency carrier 306, optically focused array 303, liquid crystal layer 310, colored filter 312, second transparency carrier 314 and second Polarizer 316 in regular turn.Wherein, optically focused array 303 is made up of a plurality of high index of refraction block 305a, 305b, 305c, and high index of refraction block 305 is arranged at the one side of interior and contiguous first Polarizer 304 in a surface of first transparency carrier 306.Above-mentioned colored filter 312 more comprises light-permeable district 312a and shading region 312b, and each optically focused array 303 is arranged in pairs or groups light-permeable district 312a and is provided with, and light-permeable district 312a is positioned at the top of optically focused array 303.
Please refer to Fig. 3 B, the local enlarged diagram of the optically focused array among its presentation graphs 3A on first transparency carrier.In Fig. 3 B, the high index of refraction block 305 in the optically focused array 303 more comprises the first high index of refraction block 305a, the second high index of refraction block 305b and the 3rd high index of refraction block 305c.The width of the first high index of refraction block 305a, the second high index of refraction block 305b and the 3rd high index of refraction block 305c is P in regular turn
1, P
2, and P
3, and the width P of the first high index of refraction block 305a
1Width P greater than the second high index of refraction block 305b
2, the width P of the second high index of refraction block 305b
2Greater than the 3rd high index of refraction block 305c width P
3The second high index of refraction block 305b and the 3rd high index of refraction block 305c symmetry are respectively in the both sides of the first high index of refraction block 305a, and the arrangement mode that is to say the high index of refraction block 305 in the optically focused array 303 is the 3rd high index of refraction block 305c, the second high index of refraction block 305b, the first high index of refraction block 305a, the second high index of refraction block 305b and the 3rd high index of refraction block 305c from left to right in regular turn.
Above-mentioned high index of refraction block 305 be preferably a macromolecular material, and the refractive index of high index of refraction block 305 is greater than the refractive index of first transparency carrier 306, the refractive index of high index of refraction block 305 is preferably approximately between 1.4 to 1.8, and the refractive index of first transparency carrier 306 is preferably approximately between 1.2 to 1.55.The thickness of above-mentioned high index of refraction block 305 is preferably between 5 μ m to 300 μ m, but not in order to limit scope of the present invention.
Perhaps, shown in Fig. 4 A, the local amplification plan view of the optically focused array in first transparency carrier of its expression a preferred embodiment of the present invention more can optionally be provided with a plurality of optically focused arrays 403 with high index of refraction block 405 of cross arrangement in a surface of first transparency carrier 406.Wherein, optically focused array 403 is made up of a plurality of high index of refraction block 405, and the arrangement mode of these high index of refraction blocks 405 is cross arrangement.High index of refraction block 405 more comprise the first, second, third, fourth and the 5th high index of refraction block 405a ..., 405e, the first high index of refraction block 405a is positioned at the central authorities of optically focused array 403, the second high index of refraction block 405b and the 3rd high index of refraction block 405c are in regular turn along the both sides of directions X symmetric offset spread in the first high index of refraction block 405a, and the 4th high index of refraction block 405d and the 5th high index of refraction block 405e are in regular turn along the both sides of Y direction symmetric offset spread in the first high index of refraction block 405a.Light-permeable district (not shown) in each optically focused array 403 collocation LCD and being provided with, and the light-permeable district is arranged at the top of optically focused array 403.
In Fig. 4 A, length and the width of the first above-mentioned high index of refraction block 405a are respectively h
1With k
1Wherein, all be h along second high index of refraction block 405b of directions X symmetric offset spread and the length of the 3rd high index of refraction block 405c
1, the length h of itself and the first high index of refraction block 405a
1Quite, and the width of the second high index of refraction block 405b and the 3rd high index of refraction block 405c is respectively k
2With k
3Wherein, the width k of the first high index of refraction block 405a
1Width k greater than the second high index of refraction block 405b
2, the width k2 of the second high index of refraction block 405b is greater than the width k of the 3rd high index of refraction block 405c
3Along the 4th high index of refraction block 405d of Y direction symmetric offset spread and the width of the 5th high index of refraction block 405e all is k
1, the width k of itself and the first high index of refraction block 405a
1Quite, and the length of the 4th high index of refraction block 405d and the 5th high index of refraction block 405e is respectively h
2With h
3Wherein, the length h of the first high index of refraction block 405a
1Length h greater than the 4th high index of refraction block 405d
2, the length h of the 4th high index of refraction block 405d
2Length h greater than the 5th high index of refraction block 405e
3
In addition, as Fig. 4 B, the overlooking surface synoptic diagram is amplified in the part that optically focused array and diverging light array are set respectively in first transparency carrier and second transparency carrier of its expression a preferred embodiment of the present invention, more a plurality of optically focused arrays 403 with high index of refraction block 405 of cross arrangement can be set in a surface of first transparency carrier 406, and the diverging light array 413 of the low-refraction block 415 with cross arrangement is set simultaneously, in a surface of second transparency carrier 414 with the brightness and the visual angle of further improving LCD.Wherein, the arrangement of a plurality of low-refraction blocks 415 in the diverging light array 413 is preferably the arrangement corresponding to the high index of refraction block 405 in the optically focused array 403, and the size of the low-refraction block 415 in the diverging light array 413 be preferably with optically focused array 403 in the size of high index of refraction block 405 suitable.The refractive index of above-mentioned high index of refraction block 405 is greater than the refractive index of first transparency carrier 406, and the refractive index of low-refraction block 415 is less than the refractive index of second transparency carrier 414.
In a more preferred embodiment of the present invention, as shown in Figure 5, the light-permeable district 512a that more can optionally arrange in pairs or groups is provided with has the optically focused array 503 of low-refraction block 507, and in the below of shading region 512b low-refraction block 507 is set, but not in order to limit scope of the present invention.Wherein, the arrangement mode of the low-refraction block 507 in the optically focused array 503 be from the central authorities of optically focused array 503 toward both sides, left and right sides symmetric offset spread, and the spacing X of 507 of each low-refraction blocks
1, X
2, X
3Inequality, that is to say spacing X
1Greater than spacing X
2, spacing X
2Greater than spacing X
3
The present invention utilizes light need satisfy refraction law (Snell ' sLaw) on the interface of the medium of different refractivity, when allowing incident light pass through on the interface of medium of different refractivity, produce reflex and light is reflexed in the light-permeable district of display panels, and then improve the utilization rate of light.Please refer to Fig. 6 and Fig. 7, the local enlarged diagram of the high index of refraction block in the optically focused array among its presentation graphs 3A on first transparency carrier.In Fig. 6, the refractive index of high index of refraction block 305 is n
1, the refractive index of first transparency carrier 306 is n
2, the contact interface of the high index of refraction block 305 and first transparency carrier 306 is a surface of contact 307, and incident angle is θ
1, the refraction angle is θ
2Wherein, the refractive index n of high index of refraction block 305
1Refractive index n greater than first transparency carrier 306
2Therefore, according to refraction law (Snell ' s Law) (1):
n
1×sinθ
1＝n
2×sinθ
2(1)
When incident light 301 enters first transparency carrier 306 (dredging medium) by high index of refraction block 305 (close medium), refraction angle θ
2Can be greater than incident angle θ
1If as refraction angle θ
2When equaling 90 °, the light 309 after the refraction can betide on the surface of contact 307.At this moment, incident angle θ
1The critical angle θ that then is called total reflection
cSo refraction law formula (1) can be rewritten into:
θ
c＝sin
-1(n
2/n
1)(2)
So by (2) formula as can be known, as incident angle θ
1Critical angle θ greater than total reflection
cThe time, the phenomenon of total reflection then can take place, shown in the 7th figure, on surface of contact 307, produce the light 309 of reflection.
And, because the size of the high index of refraction block in the optically focused array of the present invention is below the micro/nano level, add the arrangement mode of the high index of refraction block in the optically focused array again, so when the structure of light by optically focused array of the present invention, can make the function of light generation optically focused, thus the brightness that further improves LCD.Referring again to Fig. 3 B, the size of the high index of refraction block 305 in the optically focused array 303 is below the micro/nano level.The second high index of refraction block 305b and the 3rd high index of refraction block 305c symmetry in regular turn are respectively in the both sides of the first high index of refraction block 305a, and two second high index of refraction block 305b, the 305b and two the 3rd high index of refraction block 305c, the 305c that are positioned at symmetric position have same widths P respectively
2With P
3The width P of the first high index of refraction block
1Width P greater than the second high index of refraction block
2, the width P of the second high index of refraction block
2Width P greater than the 3rd high index of refraction block
3So, when light 301 passes through optically focused array 303, not only on surface of contact 307, produce the light 309 of reflection, more can make the function of light reflected 309 generation optically focused, thus the brightness that further improves LCD.Therefore, optically focused array 303 can be considered as a kind of convex lens with light-focusing function.
Referring again to Fig. 3 A, and simultaneously with reference to Fig. 3 B.At first, the light that projects of backlight 302 can enter first Polarizer 304.Then, incident light 301 can produce the light 309 of reflection on surface of contact 307, and reflection ray 309 can produce the effect of optically focused through after the optically focused array 303.Subsequently, light 309 can pass first transparency carrier 306, and enters light-permeable district 312a, second transparency carrier 314 and second Polarizer 316 in liquid crystal layer 310 and the colored filter 312 in regular turn.
More particularly, the present invention utilizes light need satisfy refraction law (Snell ' s Law) on the interface of the medium of different refractivity, when allowing incident light pass through on the interface of medium of different refractivity, produce reflex and light is reflexed among the light-permeable district 312a of display panels, to reduce fiber-loss because of the shading region 312b of process colored filter 312, and then the utilization rate of increase light, and the brightness that improves LCD simultaneously.And, because the size of the high index of refraction block 305 in the optically focused array 303 of the present invention is below the micro/nano level, add the both sides that the second high index of refraction block 305b in the optically focused array and the 3rd high index of refraction block 305c symmetry are respectively in the first high index of refraction block 305a again, so when light 301 passes through optically focused array 303, can allow light 309 produce the function of optically focused, with the brightness of further raising LCD 300.
In addition, as shown in Figure 3A, method of the present invention more can allow the incident light 301a that passes the first lower transparency carrier 306 of refractive index, on the interface of the medium of different refractivity, produce the effect of refraction, make light 309a more effectively concentrate on light-permeable district 312a, further to improve the brightness of LCD.
Below will be described in detail, but this manufacture method is not in order to limit scope of the present invention at the manufacture method of the high index of refraction block in the preferred embodiment of the present invention.
Method for making one
Please refer to Fig. 8 A to Fig. 8 D, expression is according to the structural representation of making the manufacturing technology steps of macromolecule membranous layer on transparency carrier of a preferred embodiment of the present invention.In Fig. 8 A, provide a transparency carrier 602.Then, in Fig. 8 B, form a macromolecule membranous layer 604 on transparency carrier 602.The method of above-mentioned formation macromolecule membranous layer 604 is preferably spin-coating method, but not in order to limit scope of the present invention.
Subsequently, in figure Fig. 8 C, utilize light shield 606 and 608 pairs of macromolecule membranous layers 604 of ultraviolet light to expose, to form the optically focused array 603 shown in Fig. 8 D.Wherein, optically focused array 603 is made up of with a plurality of low-refraction block 607 a plurality of high index of refraction blocks 605.Wherein, above-mentioned macromolecule membranous layer 604 is obtained the high index of refraction block 605 and the low-refraction block 607 of different refractivity with exposure intensity by the control time shutter.Thus, can on transparency carrier, finish the making of optically focused array.
Perhaps, in another preferred embodiment of the present invention, more can on Polarizer, form macromolecule membranous layer, make to have high index of refraction block and low-refraction block on the Polarizer, but not in order to limit scope of the present invention.
Method for making two
Please refer to Fig. 9 A to Fig. 9 E, expression is according to the structural representation of making the manufacturing technology steps of optically focused array on transparency carrier of another preferred embodiment of the present invention.In Fig. 9 A, a transparency carrier 702 is provided, and on transparency carrier 702, forms a photoresist layer 704.Then, in Fig. 9 B, photoresist layer 704 is carried out a lithographic fabrication processes, to form patterning photoresist 706.In Fig. 9 C, etching is not the transparency carrier 702 that patterning photoresist 706 covers, thereby forms the groove 708 with different in width on transparency carrier 702.Wherein, groove 708 be the collocation colored filter light-permeable district (not shown) and be provided with.Subsequently, remove patterning photoresist 706.
In Fig. 9 D, utilize spin-coating method form a macromolecular material 710 within the groove 708 with transparency carrier 702 on.Wherein, the refractive index of macromolecular material 710 is greater than the refractive index of transparency carrier 702.Then, utilize ultraviolet light irradiation macromolecular material 710 again, with sclerosis macromolecular material 710.In Fig. 9 E, carry out an etching manufacturing process and abrasive disc manufacturing process, on the surface of transparency carrier 702, to form an even curface, form optically focused array 703 simultaneously.Wherein, optically focused array 703 is made up of with the 3rd high index of refraction block 705a, 705b and 705c first, second.Thus, can on transparency carrier, finish the making of optically focused array 703.
Perhaps, shown in Fig. 9 F, more can on transparency carrier 702, form the optically focused array 703 of a plurality of low-refraction blocks 707 on demand, but not in order to limit scope of the present invention.Wherein, the spacing of 707 of low-refraction blocks is inequality.
Method for making three
Please refer to Figure 10 A to Figure 10 D, expression is according to the structural representation of making the manufacturing technology steps of high index of refraction block on transparency carrier of a preferred embodiment more of the present invention.In Figure 10 A, on transparency carrier 802, form a photoresist layer (not shown), then photoresist layer is carried out a lithographic fabrication processes, thereby form patterning photoresist 804.In Figure 10 B, etching is not the transparency carrier 802 that patterning photoresist 804 covers, thereby forms the groove 806 with different in width on transparency carrier 802.Wherein, the light-permeable district (not shown) of groove 806 collocation colored filters and being provided with.Subsequently, remove patterning photoresist 804.
In Figure 10 C, coating one deck adhesion layer 810 on Polarizer 808.Wherein, the material of above-mentioned adhesion layer 810 is preferably a macromolecular material, and the thickness of adhesion layer 810 is preferably between 20 μ m to 30 μ m.And the refractive index of above-mentioned adhesion layer 810 is greater than the refractive index of transparency carrier 802.Then, shown in Figure 10 D, see through adhesion layer 810 Polarizer 808 and transparency carrier 802 are pasted together.Thus, can on transparency carrier 802, finish the making of optically focused array 803.Wherein, optically focused array 803 is made up of with the 3rd high index of refraction block 805a, 805b and 805c first, second.
Perhaps, more can on transparency carrier, form the optically focused array of a plurality of low-refraction blocks on demand, but not in order to limit scope of the present invention.Wherein, the spacing of low-index regions interblock is inequality.
By the preferred embodiment of the invention described above as can be known, use the present invention and have following advantage.LCD of the present invention not only can reduce the optical loss that produces because of through shading region, more can concentrate optical field distribution, and then improves the brightness of LCD.Moreover method of the present invention can allow light produce the function of optically focused, with the brightness of further raising LCD.And use the phenomenon that method of the present invention can reduce dark attitude light leak effectively, to increase the contrast of LCD.In addition, method of the present invention not only can reduce the usage quantity of brightness enhancement film, more can reduce cost.Method of the present invention more can allow the light that passes the low-refraction block, produces the effect of refraction on the interface of the medium of different refractivity, makes light more effectively concentrate on the light-permeable district, further to improve the brightness of LCD.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limiting the present invention, any those who familiarize themselves with the technology, without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when defining with claim.
Claims (17)
1. the LCD of a high brightness, this LCD comprises:
One backlight;
One first Polarizer is arranged on the described backlight;
One first transparency carrier is arranged on described first Polarizer;
A plurality of optically focused arrays are arranged in the surface of described first transparency carrier and the one side of contiguous described first Polarizer, and each described optically focused array comprises: one first high index of refraction block; And a plurality of second high index of refraction blocks, the two described second high index of refraction blocks that symmetry is respectively in the described first high index of refraction block both sides and is positioned at symmetric position have identical width, described first high index of refraction block and the described second high index of refraction block are the width of the width of a low-refraction block and the described first high index of refraction block greater than the described second high index of refraction block between any two, and the refractive index of described first high index of refraction block and the described second high index of refraction block is greater than the refractive index of described low-refraction block;
One second transparency carrier is arranged on described first transparency carrier, and has a plurality of light-permeables district, and this light-permeable district disposes corresponding to described optically focused array;
One liquid crystal layer is arranged between described first transparency carrier and described second transparency carrier; And
One second Polarizer is arranged on described second transparency carrier.
2. LCD as claimed in claim 1 is characterized in that, the width that is positioned at the described second high index of refraction block of the described first high index of refraction block, one side phases down towards the direction away from the described first high index of refraction block.
3. LCD as claimed in claim 1 is characterized in that, the material of described first high index of refraction block and the described second high index of refraction block is a macromolecule material.
4. LCD as claimed in claim 1 is characterized in that, the refractive index of described first high index of refraction block and the described second high index of refraction block is between 1.4 to 1.8.
5. LCD as claimed in claim 1 is characterized in that the refractive index of described low-refraction block is between 1.2 to 1.55.
6. LCD as claimed in claim 1 is characterized in that, the thickness of described first high index of refraction block and the described second high index of refraction block is between 5 μ m to 300 μ m.
7. LCD, this LCD comprises:
One backlight;
One macromolecule membranous layer is arranged on the described backlight, and described macromolecule membranous layer has a plurality of optically focused arrays, and each described optically focused array comprises:
One first high index of refraction block; And
A plurality of second high index of refraction blocks, the two described second high index of refraction blocks that symmetry is respectively in the described first high index of refraction block both sides and is positioned at symmetric position have identical width, described first high index of refraction block and the described second high index of refraction block are a low-refraction block between any two, and the width of the described first high index of refraction block is greater than the width of the described second high index of refraction block, and the refractive index of described first high index of refraction block and the described second high index of refraction block is greater than the refractive index of described low-refraction block; And
One display panels is arranged on the described macromolecule membranous layer, and described display panels has the top that a plurality of light-permeables district and described light-permeable district are arranged in the described optically focused array of described macromolecule membranous layer.
8. LCD as claimed in claim 7 is characterized in that, the width that is positioned at the described second high index of refraction block of the described first high index of refraction block, one side phases down towards the direction away from the described first high index of refraction block.
9. LCD as claimed in claim 7 is characterized in that, the refractive index of described first high index of refraction block and the described second high index of refraction block is between 1.4 to 1.8.
10. LCD as claimed in claim 7 is characterized in that the refractive index of described low-refraction block is between 1.2 to 1.55.
11. LCD as claimed in claim 7 is characterized in that, the thickness of described macromolecule membranous layer is between 5 μ m to 300 μ m.
12. optically focused rete that is used for a LCD, it is characterized in that, described optically focused rete has a plurality of optically focused arrays, each described optically focused array comprise a plurality of high index of refraction blocks and wherein a wideest high index of refraction block place central authorities, the two described high index of refraction blocks that all the other described high index of refraction block symmetries are respectively in the wideest described high index of refraction block both sides and are positioned at symmetric position have identical width, described high index of refraction block is a low-refraction block between any two, a plurality of light-permeables district in the corresponding described LCD of described optically focused array and disposing, the refractive index of wherein said high index of refraction block is greater than the refractive index of described low-refraction block.
13. optically focused rete as claimed in claim 12 is characterized in that, the width that is positioned at the described high index of refraction block of the wideest described high index of refraction block one side phases down towards the direction away from the wideest described high index of refraction block.
14. optically focused rete as claimed in claim 12 is characterized in that, the material of described optically focused rete is a macromolecule material.
15., it is characterized in that the refractive index of described high index of refraction block is between 1.4 to 1.8 as claim 12 a described optically focused rete.
16. optically focused rete as claimed in claim 12 is characterized in that the refractive index of described low-refraction block is between 1.2 to 1.55.
17. optically focused rete as claimed in claim 12 is characterized in that, the thickness of described optically focused rete is between 5 μ m to 300 μ m.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200610137484XA CN100430798C (en) | 2006-10-27 | 2006-10-27 | Liquid crystal display |
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| CNB200610137484XA CN100430798C (en) | 2006-10-27 | 2006-10-27 | Liquid crystal display |
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| CN1945402A CN1945402A (en) | 2007-04-11 |
| CN100430798C true CN100430798C (en) | 2008-11-05 |
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| JP6226530B2 (en) * | 2013-01-30 | 2017-11-08 | 日東電工株式会社 | Liquid crystal display |
| KR102416575B1 (en) * | 2017-07-04 | 2022-07-11 | 삼성디스플레이 주식회사 | Display device |
| CN110782776B (en) * | 2019-01-10 | 2022-02-18 | 云谷（固安）科技有限公司 | Display panel, manufacturing method thereof and display device |
| CN112631001A (en) * | 2020-12-21 | 2021-04-09 | 武汉华星光电技术有限公司 | Display module and display device |
| WO2023123156A1 (en) * | 2021-12-30 | 2023-07-06 | 华为技术有限公司 | Backlight display assembly and electronic device |
| CN114994974A (en) * | 2022-05-30 | 2022-09-02 | 武汉华星光电技术有限公司 | Array substrate and display panel |
| CN117678342A (en) * | 2022-06-29 | 2024-03-08 | 京东方科技集团股份有限公司 | Light-emitting panel, preparation method thereof and light-emitting device |
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| CN1116711A (en) * | 1993-12-16 | 1996-02-14 | 欧姆龙株式会社 | Base sheet of micro lens and liquid crystal displaying element and liquid crystal projecting apparatus |
| JPH10143903A (en) * | 1996-11-07 | 1998-05-29 | Victor Co Of Japan Ltd | Optical pickup |
| CN1201160A (en) * | 1997-03-27 | 1998-12-09 | 株式会社先进展示 | Liquid crystal display and mfg. method therefor |
| US20050122449A1 (en) * | 2002-07-30 | 2005-06-09 | Hong-Da Liu | Reflector structure in a liquid crytal display having light condensing effect |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116711A (en) * | 1993-12-16 | 1996-02-14 | 欧姆龙株式会社 | Base sheet of micro lens and liquid crystal displaying element and liquid crystal projecting apparatus |
| JPH10143903A (en) * | 1996-11-07 | 1998-05-29 | Victor Co Of Japan Ltd | Optical pickup |
| CN1201160A (en) * | 1997-03-27 | 1998-12-09 | 株式会社先进展示 | Liquid crystal display and mfg. method therefor |
| US20050122449A1 (en) * | 2002-07-30 | 2005-06-09 | Hong-Da Liu | Reflector structure in a liquid crytal display having light condensing effect |
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