CN201218847Y - Optical diffusion film and LCD device using the same - Google Patents
Optical diffusion film and LCD device using the same Download PDFInfo
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- CN201218847Y CN201218847Y CNU2008201213096U CN200820121309U CN201218847Y CN 201218847 Y CN201218847 Y CN 201218847Y CN U2008201213096 U CNU2008201213096 U CN U2008201213096U CN 200820121309 U CN200820121309 U CN 200820121309U CN 201218847 Y CN201218847 Y CN 201218847Y
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Abstract
The utility model claims an optical diffusion film, comprising a transparent base plate and an upper diffusion coat mounting with upper diffusion particles, characterized in that the transparent base plate is made of optical transparent material with a refractive index ranging from 1.4 to 1.75, the upper diffusion particles are closely contacted and distributed on surface of the transparent base plate, thickness of the upper diffusion coat after film forming ranges from 1/2 to 7/8 of the maximum geometrical size of the upper diffusion particles, refractive index of the upper diffusion particles ranges from 1.4 to 2.7 which is greater than the same of the upper diffusion coat, difference of refractive indexes of the two ranges from 0.01 to 1.3. Features thereof comprise: difference of refractive indexes between the upper diffusion particles and the upper diffusion coat ranges from 0.01-1.3 by controlling refractive index of the upper diffusion particles in the upper diffusion coat such that stray lights running through the upper diffusion particles may be more vertically emitted to the display screen, thereby effectively improving light gathering capability of diffusion films; furthermore, the liquid crystal display device of the optical diffusion film provided by the utility model is applied with fewer number of combined assemblies and higher optical evenness and brightness.
Description
Technical field
The utility model relates to a kind of optical thin film, especially relates to a kind of optical diffusion membrane and uses the liquid crystal indicator of this optical diffusion membrane.
Background technology
Optical diffusion membrane is widely used in liquid crystal indicator, advertising lamp box, lighting, mobile communication equipment button etc. and needs on the device of light source so that even illumination to be provided.The existing optical diffusion membrane that is applied to liquid crystal indicator mostly is and adopts figuratum organic film of single belt that the calendering technology produces and the multilayer film that adopt application pattern to produce, and wherein adopts the scattering particle that contains different size in the overlay of the multilayer film that application pattern produces.Fig. 1 is the structural representation of the optical diffusion membrane produced of traditional employing application pattern, and this optical diffusion membrane mainly comprises transparency carrier 10, last overlay 20 and go up scattering particle 40 and following overlay 30 reach under scattering particle 50.The optical diffusion membrane that traditional employing application pattern is produced mainly relies on the scattering particle of random scatter in the overlay and different size that the incident ray that enters in the coating is carried out abundant scattering, so that the direction stochastic distribution of emergent ray, thereby make the inhomogeneous light field homogenising of incident, and the flaw of film lower back optical mode set of pieces is hidden.Simultaneously, because the top of some larger-size particles protrudes in coating surface, formation has the curved surface 21 of certain optically focused effect to light, thereby makes this kind optical diffusion sheet have certain light gathering.Liquid crystal indicator fast-developing and in the widespread use of mobile communication equipment display, laptop computer displays, desktop computer display and large scale liquid crystal TV in recent years, performance requirement to optical diffusion membrane in the display device improves day by day, how to improve brightness and illumination uniformity effectively and becomes the main path that promotes product specification.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of liquid crystal indicator that can effectively improve the optical diffusion membrane of optics uniformity coefficient and brightness and use this optical diffusion membrane.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of optical diffusion membrane, comprise transparency carrier and the last diffusion coating that is provided with diffusion particle, described transparency carrier is that 1.4～1.75 optically transparent material is made by refractive index, described upward diffusion particle closely contacts each other and is distributed on the described transparency carrier surface, the described thickness of going up after the diffusion coating film forming is 1/2～7/8 of the described biggest size of element that goes up diffusion particle, the described refractive index that goes up diffusion particle is 1.4～2.7, the described refractive index that goes up diffusion particle is greater than the described refractive index that goes up diffusion coating, and refringence between the two is 0.01～1.3.
Described transparency carrier is by a kind of the making among glass, PET, PC, PMMA and the PS, the described diffusion coating of going up is a kind of in esters of acrylic acid, polyurethanes, the silicone based or organic multicomponent alcohols, and the described diffusion particle of going up is made by the potpourri of a kind of or above-mentioned dead matter in dead matter monox, titanium dioxide, aluminium oxide and the zinc paste or made by the blend or the multipolymer of organic substance acryl resin, acrylonitrile resin and polystyrene resin or above organic substance.
The described diffusion particle of going up comprises macroparticle and small-particle, the biggest size of element of described macroparticle is 1～100 micron, the biggest size of element of described small-particle is 0.1～50 micron, the physical dimension that described macroparticle is parallel to described transparency carrier surface direction is 2: 1～100: 1 with the ratio that described small-particle is parallel to the physical dimension of described transparency carrier surface direction, and described macroparticle and described small-particle are spaced.
The described diffusion particle of going up is shaped as sphere or spheroid shape.
The lower surface of described transparency carrier is provided with the anti-bonding coating with pattern structure, be provided with anti-bonding particle in the described anti-bonding coating, described anti-bonding particle does not contact mutually and disperses to be arranged on the lower surface of described transparency carrier, and the shared area sum of described anti-bonding particle prevents that with described the ratio of the area of bonding coating is 1/1000～1/100.
A kind of liquid crystal indicator, comprise a light source assembly, liquid crystal panel assembly and a slice optical diffusion membrane at least, described optical diffusion membrane comprises transparency carrier and is provided with the last diffusion coating of diffusion particle, described transparency carrier is that 1.4～1.75 optically transparent material is made by refractive index, described upward diffusion particle closely contacts each other and is distributed on the described transparency carrier surface, the described refractive index that goes up diffusion particle is 1.4～2.7, the described refractive index that goes up diffusion particle is greater than the described refractive index that goes up diffusion coating, and refringence between the two is 0.01～1.3.
The described diffusion particle of going up comprises macroparticle and small-particle, the biggest size of element of described macroparticle is 1～100 micron, the biggest size of element of described small-particle is 0.1～50 micron, the physical dimension that described macroparticle is parallel to described transparency carrier surface direction is 2: 1～100: 1 with the ratio that described small-particle is parallel to the physical dimension of described transparency carrier surface direction, and described macroparticle and described small-particle are spaced.
The lower surface of described transparency carrier is provided with the anti-bonding coating with pattern structure, be provided with anti-bonding particle in the described anti-bonding coating, described anti-bonding particle does not contact mutually and disperses to be arranged on the lower surface of described transparency carrier, and the shared area sum of described anti-bonding particle prevents that with described the ratio of the area of bonding coating is 1/1000～1/100.
Described light source assembly comprises light source, light guide plate and reflector plate, and described light source is arranged on the side of described light guide plate, and described light source is at least a in cold-cathode fluorescence lamp, external electrode fluorescent lamp, light emitting diode and the hot-cathode fluorescent lamp.
Described light source assembly comprises light source, diffuser plate and reflecting plate, described light source is arranged between described diffuser plate and the described reflecting plate, and described light source is at least a in cold-cathode fluorescence lamp, external electrode fluorescent lamp, light emitting diode and the hot-cathode fluorescent lamp.
Compared with prior art, advantage of the present utility model is by controlling the refractive index of last diffusion particle in the diffusion coating, making the refringence between diffusion particle and the last diffusion coating is 0.01～1.3, and make the vertical more directive display screen of the parasitic light that passes through last diffusion particle, improved the light gathering of diffusion film effectively; Use the liquid crystal indicator of optical diffusion membrane of the present utility model, it has less combine component quantity, and has higher optics uniformity coefficient and brightness.
From the experimental data of table 1, go up refringence between diffusion particle and the last diffusion coating as can be seen to the influence of brightness.
Table 1 experimental data
| Particle and coating refringence | Brightness |
| 0.01 | 2310 |
| 0.04 | 2317 |
| 0.11 | 2432 |
Description of drawings
Fig. 1 is the diagrammatic cross-section of the optical diffusion membrane of prior art;
Fig. 2 is the diagrammatic cross-section of the optical diffusion membrane of the utility model embodiment one;
Fig. 3 is the utility model embodiment two diagrammatic cross-sections;
Fig. 4 is the liquid crystal indicator structural representation of the utility model embodiment three;
Fig. 5 is the liquid crystal indicator structural representation of the utility model embodiment four;
Fig. 6 is the liquid crystal indicator structural representation of the utility model embodiment five.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one: as shown in Figure 2, optical diffusion membrane 100 comprises a transparency carrier 110, a last diffusion coating 120 that includes sphere or elliposoidal macroparticle 140 and sphere or elliposoidal small-particle 150, the lower surface of transparency carrier 110 is provided with the anti-bonding coating 130 with pattern structure, be provided with anti-bonding particle 160 in the anti-bonding coating 130, anti-bonding particle 160 does not contact mutually and disperses to be arranged on the lower surface of transparency carrier 110, macroparticle 140 closely contacts distribution each other with small-particle 150 in the last diffusion coating 120, the biggest size of element of macroparticle 140 is 10 microns, the biggest size of element of small-particle 150 is 0.1 micron, the average geometric size that macroparticle 140 is parallel to transparency carrier 110 surface direction is 100: 1 with the ratio that small-particle 150 is parallel to the average geometric size of transparency carrier 110 surface direction, the refractive index of macroparticle 140 and small-particle 150 is 2.7, the refractive index of last diffusion coating 120 is 1.7, thickness after last diffusion coating 120 film forming be strictly controlled at macroparticle 140 in the diffusion coating 120 maximum geometric diameter 1/2, exposed particle is formed with the lens arrangement of spotlight effect, the light 170 that transmits from below is assembled to the center, and the shared area sum of anti-bonding particle 160 is 1/500 with the ratio of the area of anti-bonding coating 130.
In the present embodiment, transparency carrier 110 is made by PMMA, and last diffusion coating 120 is acrylate (refractive index of this material is 1.47), and macroparticle 140 and small-particle 150 are made (refractive index of this material is 2.7) by the dead matter titanium dioxide
Embodiment two: as shown in Figure 3, other structure is identical with embodiment one, optical diffusion membrane 200 comprises a transparency carrier 210 equally, a last diffusion coating 220 that includes sphere or elliposoidal macroparticle 240 and sphere or elliposoidal small-particle 250, the lower surface of transparency carrier 110 is provided with the anti-bonding coating 230 with pattern structure, be provided with anti-bonding particle 260 in the anti-bonding coating 20, anti-bonding particle 260 does not contact mutually and disperses to be arranged on the lower surface of transparency carrier 210, macroparticle 240 closely contacts distribution each other with small-particle 250 in the last diffusion coating 220, with embodiment one difference shown in Figure 2 be that the biggest size of element of macroparticle 240 is 100 microns, the biggest size of element of small-particle 250 is 50 microns, the average geometric size that macroparticle 240 is parallel to transparency carrier 210 surface direction is 2: 1 with the ratio that small-particle 250 is parallel to the average geometric size of transparency carrier 210 surface direction, the refractive index of macroparticle 240 and small-particle 250 is 1.55, the refractive index of last diffusion coating 220 is 1.46, thickness after last diffusion coating 220 film forming be strictly controlled at macroparticle 240 in the diffusion coating 220 maximum geometric diameter 3/4, exposed particle is formed with the lens arrangement of spotlight effect, the light 270 that transmits from below is assembled to the center, and the shared area sum of anti-bonding particle 260 is 1/100 with the ratio of the area of anti-bonding coating 230.
In the present embodiment, transparency carrier 210 is made by glass, and last diffusion coating 220 is acrylate (refractive index of this material is 1.47), and macroparticle 140 and small-particle 150 are made (refractive index of this material is 1.59) by the organic substance polystyrene resin
Embodiment three: as shown in Figure 4, be applied to the example of laptop computer displays for using two-layer optical diffusion membrane.Wherein 410 is fluorescent tube, and 420 is the high-level efficiency reflector plate, and 430 is the transparent light guide plate in the laptop computer displays, and 440 is optical diffusion membrane, and 450 is display panels.
Embodiment four: as shown in Figure 5, use the example of desktop computer display for using two-layer optical diffusion membrane.Wherein, 410 is fluorescent tube, and 420 is the high-level efficiency reflector plate, and 460 is the light guide plate in the desktop computer display, and 440 is optical diffusion membrane, and 450 is display panels.
Embodiment five: as shown in Figure 6, be applied to the example of lcd tv display for using two-layer above optical diffusion membrane.Wherein, 410 is fluorescent tube, and 420 is the high-level efficiency reflector plate, and 470 is the diffuser plate in the LCD TV, and 440 is optical diffusion membrane, and 450 is display panels.
Claims (10)
1, a kind of optical diffusion membrane, comprise transparency carrier and the last diffusion coating that is provided with diffusion particle, it is characterized in that described transparency carrier is that 1.4～1.75 optically transparent material is made by refractive index, described upward diffusion particle closely contacts each other and is distributed on the described transparency carrier surface, the described thickness of going up after the diffusion coating film forming is 1/2～7/8 of the described biggest size of element that goes up diffusion particle, the described refractive index that goes up diffusion particle is 1.4～2.7, the described refractive index that goes up diffusion particle is greater than the described refractive index that goes up diffusion coating, and refringence between the two is 0.01～1.3.
2, a kind of optical diffusion membrane as claimed in claim 1, it is characterized in that described transparency carrier is by a kind of the making among glass, PET, PC, PMMA and the PS, the described diffusion coating of going up is a kind of in esters of acrylic acid, polyurethanes, the silicone based or organic multicomponent alcohols, and the described diffusion particle of going up is made by the potpourri of a kind of or above-mentioned dead matter in dead matter monox, titanium dioxide, aluminium oxide and the zinc paste or made by the blend or the multipolymer of organic substance acryl resin, acrylonitrile resin and polystyrene resin or above organic substance.
3, a kind of optical diffusion membrane as claimed in claim 1, it is characterized in that the described diffusion particle of going up comprises macroparticle and small-particle, the biggest size of element of described macroparticle is 1～100 micron, the biggest size of element of described small-particle is 0.1～50 micron, the physical dimension that described macroparticle is parallel to described transparency carrier surface direction is 2: 1～100: 1 with the ratio that described small-particle is parallel to the physical dimension of described transparency carrier surface direction, and described macroparticle and described small-particle are spaced.
4, a kind of optical diffusion membrane as claimed in claim 1 is characterized in that the described diffusion particle of going up is shaped as sphere or spheroid shape.
5, as the described a kind of optical diffusion membrane of each claim in the claim 1～4, the lower surface that it is characterized in that described transparency carrier is provided with the anti-bonding coating with pattern structure, be provided with anti-bonding particle in the described anti-bonding coating, described anti-bonding particle does not contact mutually and disperses to be arranged on the lower surface of described transparency carrier, and the shared area sum of described anti-bonding particle prevents that with described the ratio of the area of bonding coating is 1/1000～1/100.
6, a kind of liquid crystal indicator, comprise a light source assembly, liquid crystal panel assembly and a slice optical diffusion membrane at least, described optical diffusion membrane comprises transparency carrier and is provided with the last diffusion coating of diffusion particle, it is characterized in that described transparency carrier is that 1.4～1.75 optically transparent material is made by refractive index, described upward diffusion particle closely contacts each other and is distributed on the described transparency carrier surface, the described refractive index that goes up diffusion particle is 1.4～2.7, the described refractive index that goes up diffusion particle is greater than the described refractive index that goes up diffusion coating, and refringence between the two is 0.01～1.3.
7, liquid crystal indicator as claimed in claim 6, it is characterized in that the described diffusion particle of going up comprises macroparticle and small-particle, the biggest size of element of described macroparticle is 1～100 micron, the biggest size of element of described small-particle is 0.1～50 micron, the physical dimension that described macroparticle is parallel to described transparency carrier surface direction is 2: 1～100: 1 with the ratio that described small-particle is parallel to the physical dimension of described transparency carrier surface direction, and described macroparticle and described small-particle are spaced.
8, as claim 6 or 7 described liquid crystal indicators, the lower surface that it is characterized in that described transparency carrier is provided with the anti-bonding coating with pattern structure, be provided with anti-bonding particle in the described anti-bonding coating, described anti-bonding particle does not contact mutually and disperses to be arranged on the lower surface of described transparency carrier, and the shared area sum of described anti-bonding particle prevents that with described the ratio of the area of bonding coating is 1/1000～1/100.
9, liquid crystal indicator as claimed in claim 6, it is characterized in that described light source assembly comprises light source, light guide plate and reflector plate, described light source is arranged on the side of described light guide plate, and described light source is at least a in cold-cathode fluorescence lamp, external electrode fluorescent lamp, light emitting diode and the hot-cathode fluorescent lamp.
10, liquid crystal indicator as claimed in claim 6, it is characterized in that described light source assembly comprises light source, diffuser plate and reflecting plate, described light source is arranged between described diffuser plate and the described reflecting plate, and described light source is at least a in cold-cathode fluorescence lamp, external electrode fluorescent lamp, light emitting diode and the hot-cathode fluorescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201213096U CN201218847Y (en) | 2008-07-14 | 2008-07-14 | Optical diffusion film and LCD device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201213096U CN201218847Y (en) | 2008-07-14 | 2008-07-14 | Optical diffusion film and LCD device using the same |
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| Publication Number | Publication Date |
|---|---|
| CN201218847Y true CN201218847Y (en) | 2009-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201213096U Expired - Lifetime CN201218847Y (en) | 2008-07-14 | 2008-07-14 | Optical diffusion film and LCD device using the same |
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| CN (1) | CN201218847Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824131A (en) * | 2022-04-18 | 2022-07-29 | 武汉华星光电半导体显示技术有限公司 | Display panel |
-
2008
- 2008-07-14 CN CNU2008201213096U patent/CN201218847Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824131A (en) * | 2022-04-18 | 2022-07-29 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN114824131B (en) * | 2022-04-18 | 2023-06-30 | 武汉华星光电半导体显示技术有限公司 | Display panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO JIZHI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: NINGBO EXCITON NEW MATERIAL TECHNOLOGY CO., LTD. Owner name: NINGBO EXCITON NEW MATERIAL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: NINGBO HIGH-TECH ZONES JIZHI TECHNOLOGY CO.,LTD |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315040, D, No. 75, Hai Lu, hi tech Zone, Zhejiang, Ningbo Patentee after: Ningbo Exciton Technology Co.,Ltd. Address before: 315040, D, No. 75, Hai Lu, hi tech Zone, Zhejiang, Ningbo Patentee before: NINGBO EXCITON NEW MATERIAL TECHNOLOGY Co.,Ltd. Address after: 315040, D, No. 75, Hai Lu, hi tech Zone, Zhejiang, Ningbo Patentee after: NINGBO EXCITON NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 315040, D, No. 75, Hai Lu, hi tech Zone, Zhejiang, Ningbo Patentee before: Ningbo ExcitonTechnology Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |
Address after: 315040, No. 9, Jingyuan Road, hi tech Zone, Zhejiang, Ningbo Patentee after: Ningbo Exciton Technology Co.,Ltd. Address before: 315040, D, No. 75, Hai Lu, hi tech Zone, Zhejiang, Ningbo Patentee before: Ningbo Exciton Technology Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090408 |