CN100454043C - Brightening film, light-negative mould set and liquid-crystal display mould set - Google Patents
Brightening film, light-negative mould set and liquid-crystal display mould set Download PDFInfo
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- CN100454043C CN100454043C CNB2005101207202A CN200510120720A CN100454043C CN 100454043 C CN100454043 C CN 100454043C CN B2005101207202 A CNB2005101207202 A CN B2005101207202A CN 200510120720 A CN200510120720 A CN 200510120720A CN 100454043 C CN100454043 C CN 100454043C
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- prism structure
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- refractive index
- protective seam
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Abstract
A flooding film is prepared as forming master body by the first surface and the second surface, forming the first prism by multiple prism post being set on said first surface continuously, forming the second prism by multiple prism post being set on said second surface continuously and being set to be vertical to posts set on the first surface, covering the first protection layer and the second protection layer separately on the first prism and the second prism.
Description
[technical field]
The present invention relates to a kind of brightness enhancement film, use the module backlight and the liquid crystal display module of this brightness enhancement film.
[background technology]
Demand along with liquid crystal display market high brightness, in present liquid crystal display module, adopt brightness enhancement film (Brightness Enhancement Film usually, BEF), it is arranged in the module backlight of liquid crystal display module, in order to increase the luminescence efficiency of module backlight.
Fig. 1 is the structural representation of prior art liquid crystal display module.This liquid crystal display module 20 comprises one first polaroid 201, a liquid crystal panel 200, one second polaroid 206 and a module 220 backlight that is cascading from top to bottom.This module 220 backlight provides planar light for this liquid crystal panel 200.This liquid crystal panel 200 comprises one first substrate 202, a liquid crystal layer 203 and one second substrate 204 that is cascading from top to bottom.This module 220 backlight comprises one first brightness enhancement film 221, one second brightness enhancement film 222, a diffusion sheet 224, a light guide plate 226 and a reflector plate 228 that is cascading from top to bottom.Also be provided with a light source 205 in these light guide plate 226 1 sides.
Fig. 2 is the structural representation of second polaroid 206.This second polaroid 206 comprises an adhesion layer 210, a diaphragm 212, a polarization matrix 214 and a support chip 216 that is cascading from top to bottom.This support chip 216 is used for supporting this polarization matrix 214.This diaphragm 212 is used for protecting this polarization matrix 214.The material of this diaphragm 212 and this support chip 216 select for use usually Triafol T (Triacetyl Cellulose, TAC), the material of this polarization matrix 214 select for use usually polyvinyl alcohol (PVA) (Polyvinyl Alcohol, PVA).The structure of this first polaroid 201 is identical with the structure of this second polaroid 206.
Fig. 3 is the schematic perspective view of this first brightness enhancement film 221.This first brightness enhancement film 221 comprises a main body 230 and a plurality of prism structure 231.This prism structure 231 is made up of a plurality of prism columns, is arranged on continuously on two apparent surfaces of this main body 230, and its cross section is equilateral laciniation.The material of this prism structure 231 is selected for use usually acrylic resin modified (Modified AcrylicAcid Resin), and the material of this main body 230 is selected the polyester material usually for use.The structure of this second brightness enhancement film 222 is identical with the structure of this first brightness enhancement film 221, and each prism columns of each prism columns of this second brightness enhancement film 222 and this first brightness enhancement film 221 is orthogonal.
Fig. 4 is the light harvesting principle schematic of the prism structure 231 of this first brightness enhancement film 221.After incident ray a injected the bottom surface 232 of this prism structure 231, because the refractive index of air is less than this prism refractive index of 231 partly, thereby according to refraction law, its refraction angle will be less than incident angle.When refracted ray during through inclined-plane 233 outgoing, because the refractive index of this prism structure 231 is greater than air refraction, thereby again according to refraction law, the emergence angle of emergent ray b will be greater than the refraction angle.Through this light path, the going direction changing that makes oblique fire originally go into the light a of this bottom surface 232 becomes and is basically perpendicular to this bottom surface 233, thereby makes more light inject this liquid crystal panel 20, reaches the effect that improves light utilization efficiency, strengthens the light harvesting effect.The orthogonal brightness enhancement film 221,222 of two-layer prism structure is set, can realizes omnibearing light harvesting effect.
But, because the prism structure of this first brightness enhancement film 221 and this second brightness enhancement film 222 is exposed outside, in assembling process, be vulnerable to damage, cause the light harvesting poor effect and produce defective products, and then cause using the module backlight of this brightness enhancement film and the reliability of liquid crystal display module to reduce.
[summary of the invention]
For solving the easily impaired problem of prior art brightness enhancement film, be necessary to provide a kind of impaired brightness enhancement film that is difficult for.
In addition, for solving prior art module backlight, also be necessary the module backlight that provides a kind of reliability high because of the impaired problem that causes that reliability reduces of brightness enhancement film.
Further, for solving prior art liquid crystal display module, also be necessary the liquid crystal display module that provides a kind of reliability high because of the impaired problem that causes that reliability reduces of brightness enhancement film.
A kind of brightness enhancement film, it comprises a main body, one first prism structure, one second prism structure, one first protective seam and one second protective seam.This main body comprises opposite first and second surface, and this second surface is a light entrance face.This first prism structure comprises a plurality of prism columns, is arranged on the first surface of this main body continuously.This second prism structure also comprises a plurality of prism columns compositions, and it is arranged on the second surface of this main body continuously, and each prism columns of its each prism columns and this first prism structure is perpendicular.This first protective seam covers this first prism structure.This second protective seam covers this second prism structure; and the refractive index of this first protective seam is less than the refractive index of this first prism structure; the refractive index of this second protective seam is greater than the refractive index of this second prism structure, and this first prism structure is identical with the refractive index of this second prism structure.
A kind of module backlight, it comprises a light source, a light guide plate and a brightness enhancement film.This light guide plate will be converted into planar light from the light that this light source sends, and the planar light that this brightness enhancement film is sent this light guide plate is carried out light harvesting.This brightness enhancement film comprises a main body, one first prism structure, one second prism structure, one first protective seam and one second protective seam.This main body comprises opposite first and second surface, and contiguous this light guide plate of this second surface is provided with.This first prism structure comprises a plurality of prism columns, is arranged on the first surface of this main body continuously.This second prism structure also comprises a plurality of prism columns, and it is arranged on the second surface of this main body continuously, and each prism columns of its each prism columns and this first prism structure is perpendicular.This first protective seam covers this first prism structure.This second protective seam covers this second prism structure; and the refractive index of this first protective seam is less than the refractive index of this first prism structure; the refractive index of this second protective seam is greater than the refractive index of this second prism structure, and this first prism structure is identical with the refractive index of this second prism structure.
A kind of liquid crystal display module, it comprises a polaroid, a liquid crystal panel and a polarisation brightness enhancement layer and a module backlight of stacked setting in regular turn.This polaroid comprises one first polarization matrix and a support chip of stacked setting in regular turn, and this support chip is used for supporting this first polarization matrix.This polarisation brightness enhancement layer comprises one second polarization matrix, one first protective seam, one first prism structure, a main body, one second prism structure, one second protective seam of stacked setting in regular turn.This main body comprises a first surface and a second surface that is oppositely arranged, and contiguous this module setting backlight of this second surface.This first protective seam both had been used for supporting this second polarization matrix, was used for protecting this first prism structure again.This main body comprises two opposite first and second surface.This first prism structure comprises a plurality of prism columns, be arranged on the first surface of this main body continuously, this second prism structure also comprises a plurality of prism columns, and it is arranged on the second surface of this main body continuously, and each prism columns of its each prism columns and this first prism structure is perpendicular.This second protective seam is used for protecting this second prism structure; and the refractive index of this first protective seam is less than the refractive index of this first prism structure; the refractive index of this second protective seam is greater than the refractive index of this second prism structure, and this first prism structure is identical with the refractive index of this second prism structure.
Above-mentioned brightness enhancement film realizes omnibearing light harvesting function by orthogonal two prism structures are set; and has a protective seam respectively on these two prism structures; can avoid this prism structure in assembling process, to sustain damage; effectively protect the prism structure of this brightness enhancement film, thereby guaranteed to have the reliability of the module backlight and the liquid crystal display module of this structure of reflection reducting coating.
[description of drawings]
Fig. 1 is the structural representation of prior art liquid crystal display module.
Fig. 2 is the structural representation of liquid crystal display module second polaroid shown in Figure 1.
Fig. 3 is the structural representation of liquid crystal display module brightness enhancement film shown in Figure 1.
Fig. 4 is the light harvesting principle schematic of brightness enhancement film shown in Figure 3.
Fig. 5 is the structural representation of liquid crystal display module first embodiment of the present invention.
Fig. 6 is the structural representation of liquid crystal display module brightness enhancement film shown in Figure 5.
Fig. 7 is the structural representation of liquid crystal display module second embodiment of the present invention.
Fig. 8 is the structural representation of liquid crystal display module the 3rd embodiment of the present invention.
Fig. 9 is the structural representation that the present invention has the brightness enhancement film of wavy prism structure.
[embodiment]
Fig. 5 is the structural representation of liquid crystal display module first embodiment of the present invention.This liquid crystal display module 30 comprises one first polaroid 301, a liquid crystal panel 300, one second polaroid 306 and a module 320 backlight that is cascading from top to bottom.This module 320 backlight provides planar light for this liquid crystal panel 300.This liquid crystal panel 300 comprises one first substrate 302, a liquid crystal layer 303 and one second substrate 304 that is cascading from top to bottom.This module 320 backlight comprises a brightness enhancement film 322, a diffusion sheet 324, a light guide plate 326 and a reflector plate 328 that is cascading from top to bottom.Also be provided with a light source 305 in these light guide plate 326 1 sides.
Fig. 6 is the structural representation of this brightness enhancement film 322.This brightness enhancement film 322 comprises a main body 332, one first prism structure 330, one second prism structure 334, one first protective seam 336 and one second protective seam 338.This first prism structure 330 is made up of a plurality of prism columns with this second prism structure 334, be arranged on continuously on two apparent surfaces of this main body 332, its cross section is equilateral laciniation, and each prism columns of this first prism structure 330 and each prism columns of this second prism structure 334 are perpendicular.This first protective seam 336 covers this first prism structure 330, and this second protective seam 338 covers this second prism structure 334.This first prism structure 330 all is n with the refractive index of this second prism structure 334
0, the refractive index of this first protective seam 336 is n
1, and n
0＞n
1The refractive index of this second protective seam 338 is n
2, and n
0＜n
2The material of these two prism structures 330,334 is generally acrylic resin modified, and the material of this main body 332 is generally the polyester material, and the refractive index of this main body 332 is near the refractive index of these two prism structures 330,334.
When light is injected this second prism structure 334 through this second protective seam 338, because the refractive index n of this second protective seam 338
2Refractive index n greater than this second prism structure 334
0, thereby according to its refraction angle of refraction law less than incident angle; Because the refractive index of these two prism structures 334,330 and the refractive index of main body 332 are approaching; thereby this refracted ray will be similar to along rectilinear direction and pass the inclined-plane that this second prism structure 334 and this main body 332 arrives these first prism structures 330, because the refractive index n of this first protective seam 336
1Less than this first prism structure n
0, thereby according to its emergence angle of refraction law greater than incident angle.Through this light path, the light that also the script oblique fire can be gone into this second protective seam 338 changes the light that becomes basic vertical this first protective seam 336, thereby reaches the light harvesting effect that is provided with two-layer brightness enhancement film equivalence with prior art.And each prism columns of this first prism structure 330 and each prism columns of this second prism structure 334 are perpendicular, thereby have realized omnibearing light harvesting effect.
Owing on these two prism structures 330,334, be provided with two protective seams 336,338 respectively; these two prism structures 330,334 are protected; avoid brightness enhancement film 322 damaged in assembling process, thereby guaranteed to use the reliability of the module backlight and the liquid crystal display module of this brightness enhancement film.
Fig. 7 is the structural representation of liquid crystal display module second embodiment of the present invention.This liquid crystal display module 40 comprises a polaroid 401, a liquid crystal panel 400, a polarisation brightness enhancement layer 406, a diffusion sheet 424, a light guide plate 426 and a reflector plate 428 that is cascading from top to bottom.These light guide plate 426 1 sides also are provided with a light source 405.This liquid crystal panel 400 comprises one first substrate 402, a liquid crystal layer 403 and one second substrate 404 that is cascading from top to bottom.
This polarisation brightness enhancement layer 406 comprises an adhesion layer 410, a diaphragm 412, a polarization matrix 414, one first protective seam 436, one first prism structure 430, a main body 432, one second prism structure 434 and one second protective seam 438 that is cascading from top to bottom.This diaphragm 412 is used for protecting this polarization matrix 414.This first prism structure 430 is made up of a plurality of prism columns with this second prism structure 434, be arranged on continuously on two apparent surfaces of this main body 432, the laciniation of the length of sides such as its cross section is, and each prism columns of each prism columns of this first prism structure 430 and this second prism structure 434 is perpendicular.This first protective seam 436 covers this first prism structure 430, and it had both played the effect of supporting this polarization matrix 414, was used for protecting this first prism structure 430 again.This second protective seam 438 covers this second prism structure 434.
In this structure; this first protective seam 436 had both had the function that supports this polarization matrix 414; the function that has this first prism structure 430 of protection again; thereby played the support chip function of this second polaroid 306 of first embodiment; thereby reduce the support chip structure, reduced the thickness of this liquid crystal display module 40.
Fig. 8 is the structural representation of liquid crystal display module the 3rd embodiment of the present invention.The difference of this liquid crystal display module 50 and the second embodiment liquid crystal display module 40 is: second protective seam, 538 lower surfaces in its polarisation brightness enhancement layer 506 further apply one deck diffusion barrier 524; so that this polarisation brightness enhancement layer 506 has the function of diffusion sheet, further reduce the thickness of liquid crystal display module 50.
See also Fig. 9, in the respective embodiments described above, this prism structure also can be that the cross section is wavy column structure and is arranged in continuously on this body surfaces.
First prism structure of each embodiment of the present invention, main body and second prism structure also can be manufactured from the same material, and the three is an one-piece construction.
Claims (8)
1. brightness enhancement film, it has the light harvesting effect, comprising:
One main body, this main body comprises opposite first and second surface, and this second surface is a light entrance face;
One first prism structure, it comprises a plurality of prism columns, is arranged on the first surface of this main body continuously;
One second prism structure, it also comprises a plurality of prism columns, and each prism columns of its each prism columns and this first prism structure is perpendicular;
It is characterized in that: each prism columns of this second prism structure is arranged on the second surface of this main body continuously; and this first prism structure is coated with one first protective seam; this second prism structure is coated with one second protective seam; and the refractive index of this first protective seam is less than the refractive index of this first prism structure; the refractive index of this second protective seam is greater than the refractive index of this second prism structure, and this first prism structure is identical with the refractive index of this second prism structure.
2. brightness enhancement film as claimed in claim 1 is characterized in that: the cross sectional shape of this first prism structure and this second prism structure can be a zigzag or wavy.
3. brightness enhancement film as claimed in claim 1 is characterized in that: the material of this first prism structure and this second prism structure is acrylic resin modified, and the material of this main body is the polyester material.
4. module backlight, it comprises:
One light source;
One light guide plate, this light guide plate will be converted into planar light from the light that this light source sends;
One brightness enhancement film, this brightness enhancement film will be carried out light harvesting from the planar light that this light guide plate is sent, and it comprises:
One main body, this main body comprises opposite first and second surface, and contiguous this light guide plate of this second surface is provided with;
One first prism structure, it comprises a plurality of prism columns, is arranged on the first surface of this main body continuously;
One second prism structure, it also comprises a plurality of prism columns, and each prism columns of its each prism columns and this first prism structure is perpendicular;
It is characterized in that: each prism columns of this second prism structure is arranged on the second surface of this main body continuously; and this first prism structure is coated with one first protective seam; this second prism structure is coated with one second protective seam; and the refractive index of this first protective seam is less than the refractive index of this first prism structure; the refractive index of this second protective seam is greater than the refractive index of this second prism structure, and this first prism structure is identical with the refractive index of this second prism structure.
5. liquid crystal display module; it comprises a polaroid of stacked setting in regular turn; one liquid crystal panel and a module backlight; this polaroid comprises one first polarization matrix and a support chip; this support chip is used to support this first polarization matrix; it is characterized in that: this liquid crystal display module comprises that also one is arranged on the polarisation brightness enhancement layer between this liquid crystal panel and this module backlight; this polarisation brightness enhancement layer comprises one second polarization matrix of stacked setting in regular turn; one first protective seam; one first prism structure; one main body; one second prism structure and one second protective seam; this main body comprises a first surface and a second surface that is oppositely arranged; and contiguous this module setting backlight of this second surface; this first prism structure comprises a plurality of prism columns; be arranged on the first surface of this main body continuously; this second prism structure also comprises a plurality of prism columns; be arranged on the second surface of this main body continuously; and each prism columns of its each prism columns and this first prism structure is perpendicular; this first protective seam covers this first prism structure; it both had been used to support this second polarization matrix; be used to protect this first prism structure again; this second protective seam covers this second prism structure; it is used to protect this second prism structure; and the refractive index of this first protective seam is less than the refractive index of this first prism structure; the refractive index of this second protective seam is greater than the refractive index of this second prism structure, and this first prism structure is identical with the refractive index of this second prism structure.
6. liquid crystal display module as claimed in claim 5 is characterized in that: the cross sectional shape of this first prism structure and this second prism structure can be a zigzag or wavy.
7. liquid crystal display module as claimed in claim 5 is characterized in that: the material of this first prism structure and this second prism structure is acrylic resin modified, and the material of this main body is the polyester material.
8. liquid crystal display module as claimed in claim 5 is characterized in that: this polarisation brightness enhancement layer further comprises a diffusion barrier, and this diffusion barrier is coated in this second protective seam surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101207202A CN100454043C (en) | 2005-12-16 | 2005-12-16 | Brightening film, light-negative mould set and liquid-crystal display mould set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101207202A CN100454043C (en) | 2005-12-16 | 2005-12-16 | Brightening film, light-negative mould set and liquid-crystal display mould set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1982918A CN1982918A (en) | 2007-06-20 |
| CN100454043C true CN100454043C (en) | 2009-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101207202A Expired - Fee Related CN100454043C (en) | 2005-12-16 | 2005-12-16 | Brightening film, light-negative mould set and liquid-crystal display mould set |
Country Status (1)
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| CN (1) | CN100454043C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809774B (en) * | 2011-06-03 | 2015-02-11 | 群康科技(深圳)有限公司 | Optical film and liquid crystal display device using same |
| TWI459044B (en) | 2011-06-03 | 2014-11-01 | Innocom Tech Shenzhen Co Ltd | Optical sheet and method for manufacturing the same and liquid crystal display device using the same |
| CN102628968B (en) * | 2012-01-04 | 2013-08-07 | 京东方科技集团股份有限公司 | Condensation film, backlight module and liquid crystal display panel |
| CN104422976A (en) * | 2013-08-21 | 2015-03-18 | 上海友浦塑胶有限公司 | Composite high-gain brightness enhancement film group |
| CN104297823A (en) * | 2014-10-27 | 2015-01-21 | 京东方科技集团股份有限公司 | Prism film, prism film manufacturing method and liquid crystal display device |
| CN108563065B (en) * | 2018-03-12 | 2022-01-07 | 厦门天马微电子有限公司 | Backlight module, manufacturing method and display device |
Citations (8)
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| JPH08271887A (en) * | 1995-03-29 | 1996-10-18 | Sumitomo Bakelite Co Ltd | Light control sheet for liquid crystal display device |
| US6091547A (en) * | 1994-09-27 | 2000-07-18 | 3M Innovative Properties Company | Luminance control film |
| CN1341216A (en) * | 1999-08-24 | 2002-03-20 | 株式会社辻电 | Protective film for prism lens |
| US6570710B1 (en) * | 1999-11-12 | 2003-05-27 | Reflexite Corporation | Subwavelength optical microstructure light collimating films |
| CN1477409A (en) * | 2002-05-13 | 2004-02-25 | ���ṫ˾ | Lenticular array making method, liquid crystal display device and making method and projector |
| CN1508595A (en) * | 2002-12-20 | 2004-06-30 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display device |
| WO2005019879A1 (en) * | 2003-08-18 | 2005-03-03 | Eastman Kodak Company | Brightness enhancement article |
| CN1614771A (en) * | 2003-11-04 | 2005-05-11 | 松下电器产业株式会社 | Semiconductor device and its manufacture |
-
2005
- 2005-12-16 CN CNB2005101207202A patent/CN100454043C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6091547A (en) * | 1994-09-27 | 2000-07-18 | 3M Innovative Properties Company | Luminance control film |
| JPH08271887A (en) * | 1995-03-29 | 1996-10-18 | Sumitomo Bakelite Co Ltd | Light control sheet for liquid crystal display device |
| CN1341216A (en) * | 1999-08-24 | 2002-03-20 | 株式会社辻电 | Protective film for prism lens |
| US6570710B1 (en) * | 1999-11-12 | 2003-05-27 | Reflexite Corporation | Subwavelength optical microstructure light collimating films |
| CN1477409A (en) * | 2002-05-13 | 2004-02-25 | ���ṫ˾ | Lenticular array making method, liquid crystal display device and making method and projector |
| CN1508595A (en) * | 2002-12-20 | 2004-06-30 | 鸿富锦精密工业（深圳）有限公司 | Liquid crystal display device |
| WO2005019879A1 (en) * | 2003-08-18 | 2005-03-03 | Eastman Kodak Company | Brightness enhancement article |
| CN1614771A (en) * | 2003-11-04 | 2005-05-11 | 松下电器产业株式会社 | Semiconductor device and its manufacture |
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| CN1982918A (en) | 2007-06-20 |
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