CN100388012C - Optical film and uses thereof - Google Patents
Optical film and uses thereof Download PDFInfo
- Publication number
- CN100388012C CN100388012C CNB2003101224069A CN200310122406A CN100388012C CN 100388012 C CN100388012 C CN 100388012C CN B2003101224069 A CNB2003101224069 A CN B2003101224069A CN 200310122406 A CN200310122406 A CN 200310122406A CN 100388012 C CN100388012 C CN 100388012C
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- China
- Prior art keywords
- base material
- brightness
- vibrin
- liquid crystal
- reflectance coating
- Prior art date
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Abstract
The present invention relates to an optical film which comprises an upper layer of base material, a lower layer of base material and a middle layer, wherein the upper layer of base material and the lower layer of base material are made of macromolecule resin, the middle layer is composed of polyester resin and barium sulfate, and at least the surface of one base material is coated with ultraviolet absorbent. The optical film of the present invention can be used on a backlight reflecting plate of a liquid crystal display so as to reinforce the brightness of the liquid crystal display.
Description
Technical field
The present invention is about a kind of blooming, and it comprises the levels base material of macromolecule resin and by the middle layer that vibrin and barium sulphate constituted, wherein has at least a kind of substrate surface to be coated with ultraviolet light absorber.Blooming of the present invention can be used for the backlight liquid crystal display reflecting plate, to reach the effect that strengthens LCD brightness.
Background technology
LCD (Liquid Crystal Display, LCD) imaging, at first utilize a kind of backlight (back light source) to project light source, these light sources can be earlier through a Polarizer, and then through liquid crystal molecule, this moment, the arrangement mode of liquid crystal molecule can change the angle of the light that penetrates liquid crystal, and these light are again through the colored filter (color filter) and another piece Polarizer in the place ahead then.Therefore,, just can control the light intensity and the color of last appearance, and and then change the color combination that the different depths as long as change to stimulate the magnitude of voltage of liquid crystal molecule.
The brightness of LCD is except the transmittance that depends on liquid crystal cell and colored filter, and another prior factor is the brightness of backlight.Therefore if wish to improve the LCD surface brightness, should set about from improving back light source brightness.
With significant components and the brightness source of backlight, extremely important for improving liquid crystal display brightness as the LCD Presentation Function.Before the present invention, industry has been attempted multiple mode and has been removed to improve the LCD display brightness from the backlight aspect, for example, adjusts from lamp source side face, by increasing fluorescent tube quantity and/or increasing the lamp source power, just can face volume and reach shortcomings such as power consumption is many greatly to improve display brightness.In addition, can also improve, yet can face the difficulty of light guide plate material design aspect again from the light guide plate aspect.
Coating one deck reflectance coating can improve light emitted efficient behind backlight, increases emission brightness.Therefore, reflectance coating is a significant components in the LCD, and the height of its reflectivity can influence the brightness effects of demonstration.
Once disclosed a kind of white films (white film) that is used for reflecting plate backlight in Jap.P. 2002-40214 number, it comprises foam polyethylene terephthalate (foamed polyethyleneterephthalate, PET), utilize air refraction to reach the effect of reflection, but shortcoming is that this off-white color film thickness is blocked up.
This case the inventor find through broad research: add the combination of optical films thing that barium sulphate is made in vibrin, it is good and can make the blooming of thinner thickness to have function, the permanance of anti-UV, and because said composition has special particle structure, thereby reflected light more equably.Use this combination of optical films thing, need not to change relevant design and mould, the brightness of liquid crystal display is improved, can effectively solve above-mentioned shortcoming.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of blooming, comprises the levels base material of macromolecule resin, and by the middle layer that vibrin and barium sulphate constituted, wherein has at least a kind of substrate surface to be coated with ultraviolet light absorber.Preferably apply this ultraviolet light absorber in the above-mentioned reflectance coating, and this blooming is as reflectance coating at the upper strata substrate surface.The macromolecule resin that adopts is preferably vibrin (polyester resin), polycarbonate resin (polycarbonate resin) or polyurethane resin (polyurethane resin), more preferably macromolecule resin is a vibrin, most preferably is to be polyethylene terephthalate (PET) or ethylene glycol terephthalate multipolymer (co-PET) or its potpourri.
Another object of the present invention provides a kind of method that strengthens LCD brightness, and it comprises above-mentioned blooming is applied in the LCD reflectance coating as backlight.
Embodiment
The invention provides a kind of blooming, it comprises the levels base material of macromolecule resin, and by the middle layer that vibrin and barium sulphate constituted, wherein has at least a kind of substrate surface to be coated with ultraviolet light absorber.
The employed macromolecule resin of blooming of the present invention can be vibrin (polyester resin), polycarbonate resin (polycarbonate resin) or polyurethane resin (polyurethaneresin) or its potpourri.According to a specific embodiment of the present invention, this macromolecule resin is a vibrin, and it can be known foam type of personnel or the non-foam type polymkeric substance of being familiar with this technology, for example PET or terephthaldehyde's acetoacetic ester multipolymer (co-PET) or its potpourri.
Can be used for applying the ultraviolet light absorber on blooming of the present invention surface, is that to have the knack of the personnel of this technology known.
Blooming of the present invention can be used as reflectance coating, therefore, the present invention also provides a kind of method that strengthens LCD brightness in addition, and it comprises above-mentioned blooming is used for the reflectance coating of LCD as backlight, to reach the effect that strengthens LCD brightness.
Claims (3)
1. reflectance coating, comprising with the vibrin is levels base material and by the middle layer that vibrin and barium sulphate constituted, and wherein has at least a kind of surface-coated of base material that ultraviolet light absorber is arranged.
2. according to the reflectance coating described in the claim 1, it is characterized by the upper strata substrate surface and apply this ultraviolet light absorber.
3. according to the reflectance coating described in claim 1 or 2, it is characterized by this vibrin is polyethylene terephthalate or ethylene glycol terephthalate multipolymer or its potpourri.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101224069A CN100388012C (en) | 2003-12-22 | 2003-12-22 | Optical film and uses thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101224069A CN100388012C (en) | 2003-12-22 | 2003-12-22 | Optical film and uses thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632655A CN1632655A (en) | 2005-06-29 |
| CN100388012C true CN100388012C (en) | 2008-05-14 |
Family
ID=34844488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101224069A Expired - Fee Related CN100388012C (en) | 2003-12-22 | 2003-12-22 | Optical film and uses thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100388012C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093676B (en) * | 2010-12-06 | 2012-10-10 | 宁波东旭成化学有限公司 | Method for preparing optical reflective film |
| CN103042740B (en) * | 2012-11-29 | 2015-08-26 | 合肥乐凯科技产业有限公司 | A kind of high-stiffness high reflectance reflectance coating |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3957675A (en) * | 1973-09-28 | 1976-05-18 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Ultraviolet light reflective coating |
| US4429004A (en) * | 1980-06-26 | 1984-01-31 | Ciba-Geigy Corporation | Light-reflecting body |
| JPH0615774A (en) * | 1992-07-01 | 1994-01-25 | Mitsui Toatsu Chem Inc | Light reflecting sheet |
| JPH0615775A (en) * | 1992-07-01 | 1994-01-25 | Mitsui Toatsu Chem Inc | Light reflecting sheet |
| US5672409A (en) * | 1991-01-22 | 1997-09-30 | Toray Industries, Inc. | Polyester film reflector for a surface light source |
| US5710856A (en) * | 1995-01-27 | 1998-01-20 | Mitsui Toatsu Chemicals, Inc. | Light reflective sheet and light reflector using it |
| JPH11174213A (en) * | 1997-12-10 | 1999-07-02 | Mitsui Chem Inc | Optical reflector |
| US5991080A (en) * | 1996-03-14 | 1999-11-23 | Kimoto Co., Ltd. | Light reflecting material |
| JP2002040214A (en) * | 2000-07-25 | 2002-02-06 | Toray Ind Inc | White film for surface light source reflection plate |
| EP1302788A1 (en) * | 2000-07-12 | 2003-04-16 | Toray Industries, Inc. | White film for surface light source reflecting members |
-
2003
- 2003-12-22 CN CNB2003101224069A patent/CN100388012C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3957675A (en) * | 1973-09-28 | 1976-05-18 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Ultraviolet light reflective coating |
| US4429004A (en) * | 1980-06-26 | 1984-01-31 | Ciba-Geigy Corporation | Light-reflecting body |
| US5672409A (en) * | 1991-01-22 | 1997-09-30 | Toray Industries, Inc. | Polyester film reflector for a surface light source |
| JPH0615774A (en) * | 1992-07-01 | 1994-01-25 | Mitsui Toatsu Chem Inc | Light reflecting sheet |
| JPH0615775A (en) * | 1992-07-01 | 1994-01-25 | Mitsui Toatsu Chem Inc | Light reflecting sheet |
| US5710856A (en) * | 1995-01-27 | 1998-01-20 | Mitsui Toatsu Chemicals, Inc. | Light reflective sheet and light reflector using it |
| US5991080A (en) * | 1996-03-14 | 1999-11-23 | Kimoto Co., Ltd. | Light reflecting material |
| JPH11174213A (en) * | 1997-12-10 | 1999-07-02 | Mitsui Chem Inc | Optical reflector |
| EP1302788A1 (en) * | 2000-07-12 | 2003-04-16 | Toray Industries, Inc. | White film for surface light source reflecting members |
| JP2002040214A (en) * | 2000-07-25 | 2002-02-06 | Toray Ind Inc | White film for surface light source reflection plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1632655A (en) | 2005-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Kaohsiung City, Taiwan, China Patentee after: Changxing material industry limited-liability company Address before: Kaohsiung City, Taiwan, China Patentee before: Changxing Chemical Industrial Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |