CN100385307C - Optical membrane and use thereof - Google Patents
Optical membrane and use thereof Download PDFInfo
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- CN100385307C CN100385307C CNB2004100299819A CN200410029981A CN100385307C CN 100385307 C CN100385307 C CN 100385307C CN B2004100299819 A CNB2004100299819 A CN B2004100299819A CN 200410029981 A CN200410029981 A CN 200410029981A CN 100385307 C CN100385307 C CN 100385307C
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- blooming
- resin
- inorganic particulate
- base material
- coating
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Abstract
The present invention relates to an optical membrane which comprises a base material which is characterized in that at least one surface of the base material is provided with a coating layer containing inorganic particles. The optical membrane of the present invention can be applied to a backlight reflecting plate of a liquid crystal display in order to achieve the effect of enhancing the brightness of the liquid crystal display.
Description
Technical field
The present invention relates to a kind of blooming, it comprises a base material, it is characterized by to have at least a substrate surface to have the coating that contains inorganic particulate.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 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 that the transmittance that depends on liquid crystal cell and colored filter, and another prior factor is the brightness of backlight.So, should set about from improving back light source brightness if desire improves the LCD surface 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, promptly by increasing the fluorescent tube number and/or increase the lamp source power improving display brightness, reach shortcomings such as power consumption is many greatly but can face volume.In addition, can improve, yet can face the degree of difficulty of light guide plate material design aspect from the light guide plate aspect.
Behind backlight, be coated with a reflectance coating, can improve light emitted efficient, increase 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.
Because the light launched of backlight contains ultraviolet ray (UV), easily cause the macromolecule resin sulfonation in the reflectance coating in addition, cause reflecting effect to weaken and the aberration problem of LCD.The method that solves is to apply one deck ultraviolet light absorber on the reflectance coating at present, if still the ultraviolet light absorber coated weight very little, then anti-sulfonation effect is limited, if amount increases, then density reduces.
This case the inventor find through broad research, contain the coating of inorganic particulate in the reflectance coating surface-coated, not only do not influence the density of reflectance coating, again can be with the UV light absorption in most of backlight, therefore the anti-UV function of tool, and can make reflectance coating tool permanance and can reduce the thickness of reflectance coating.Use this kind blooming, need not to change relevant design and mould, the brightness of liquid crystal display is improved, can effectively solve the aforesaid drawbacks.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of blooming, and it comprises a base material, it is characterized by to have at least a substrate surface to have the coating that contains inorganic particulate.
A kind of method that strengthens LCD brightness that provides is provided, and it comprises aforesaid blooming is used in the LCD reflectance coating as backlight.
Embodiment
The invention provides a kind of blooming, it comprises a base material, it is characterized by to have at least a substrate surface to have the coating that contains inorganic particulate.
The kind of inorganic particulate that blooming of the present invention uses there is no particular restriction, as long as this inorganic particulate has the ultraviolet character of absorption.Be applicable to inorganic particulate kind of the present invention, for example but be not restricted to zinc paste, silicon dioxide, titania, aluminium oxide, calcium sulphate, barium sulphate, lime carbonate or its potpourri.The particle size of above-mentioned inorganic particulate is generally 1 to 100 nanometer, is preferably 20 to 50 nanometers.
The employed base material of blooming of the present invention is a personage institute well known of haveing the knack of this technology.Generally speaking, this base material comprises at least one floor height molecule resin.This macromolecule resin there is no particular restriction, its for example but be not restricted to the polyalkenes resin, as tygon (PE) or polypropylene (PP); Vibrin is as polyethylene terephthalate (PET); Polyacrylate resin is as polymethylmethacrylate (PMMA); Polycarbonate resin; Polyurethane resin, or its potpourri.According to an advantageous embodiment of the invention, optical film of the present invention uses the vibrin base material, is preferably polyethylene terephthalate.Aforementioned substrates can optionally comprise is familiar with the known inorganic particulate of this operator, as zinc paste, silicon dioxide, titania, aluminium oxide, calcium sulphate, barium sulphate, lime carbonate or its potpourri.One of them preferred specific embodiment according to the present invention, base material of the present invention can be multi-layer substrate, and wherein one layer or more contains this inorganic particulate.Particular words it, the present invention for example can use one or three layers of base material, wherein the middle layer contains this inorganic particulate.
Coating on the substrate surface of the present invention can optionally comprise and be familiar with the known additive of this operator, for example fluorescer or ultraviolet light absorber or its potpourri.
The ultraviolet light absorber that can be used for blooming surface coating of the present invention is a personage institute well known of haveing the knack of this technology, and it for example is benzotriazole, benzo three azines, benzophenone or salicyclic acid derivatives etc.
The fluorescer that can be used for blooming surface coating of the present invention, its kind there is no particular restriction, is to be familiar with known to the people of this skill.It includes but not limited to two three azines of Benzooxazole kind, benzimidazole or talan.
Blooming of the present invention can use as reflectance coating, therefore, the present invention provides a kind of method that strengthens LCD brightness in addition, and it comprises above-mentioned blooming is used in the LCD reflectance coating as backlight, to reach the effect that strengthens LCD brightness.
Following examples are to be used for that the invention will be further described, are not in order to limit the scope of the invention.Modification and change that any personage who is familiar with this technology can reach easily are included within this case instructions disclosure and the appended claim.
Embodiment 1
126.6 gram methacrylic resins (solid about 60%) are added middle stir (the rotating speed 1000rpm) of methyl ethyl ketone/toluene (each 45 gram), add in regular turn again 75nm massicot/titania/barium sulphate totally 3 the gram and rigidizer (desmodur 3390, available from Bayer) 18.4 grams, form 250.0 gram coating (solid 40%).Coating is coated on UX-150 (available from the Teijin) base material, can get filming of 10 μ m after the drying, leave standstill and carry out weather resistance test after 7 days and (utilize QUV weather resistance test machine, Q-panel company), film under different exposure time with measurement, the variation of its sulphonated index value (Yellowing Index, " YI ").The gained result is as shown in table 1 below.
Embodiment 2
Repeat embodiment 1 step, just base material is changed to E60L (available from Toray).The weather resistance test result that gained is filmed is as shown in table 1 below.
Comparative example 1
Repeat embodiment 1 step, just 3 gram 75nm massicot/titania/barium sulphate are changed to 3 gram organic UV absorbing agents (Tinuvin P is available from Ciba).The weather resistance test result that gained is filmed is as shown in table 1 below.
Table 1
| Thickness | Exposure 100hr Δ YI | Exposure 200hr Δ YI | Exposure 300hr Δ YI | Exposure 500hr Δ YI | |
| Embodiment 1 | 10μm | 0.60 | 0.65 | 0.90 | 1.18 |
| Embodiment 2 | 10μm | 0.61 | 0.67 | 0.92 | 1.20 |
| Comparative example 1 | 10μm | 3.74 | 6.05 | 7.95 | 9.34 |
1. learn by data shown in the table 1 that add the made blooming of inorganic particulate with different substrate materials, the effect of its anti-sulfonation is identical.
2. learn by data shown in the table 1 that the blooming that adds inorganic particulate more generally contains the blooming of UV absorbing agent, has better anti-sulfonation effect.Therefore blooming of the present invention can provide wider application.
Claims (8)
1. blooming, comprise a base material, it is characterized by and have at least a substrate surface to have the coating that contains inorganic particulate, it is as reflectance coating, described base material comprises at least one floor height molecule resin, and one layer or more contains inorganic particulate, and described inorganic particulate has the particle diameter of 1 to 100 nanometer, and wherein said macromolecule resin is selected from the group that is made of vibrin, polyacrylate resin, polyalkenes resin, polycarbonate resin and polyurethane resin and composition thereof.
2. blooming as claimed in claim 1, wherein said inorganic particulate is selected from the group that is made of zinc paste, silicon dioxide, titania, aluminium oxide, calcium sulphate, barium sulphate, lime carbonate and composition thereof.
3. blooming as claimed in claim 1, wherein said inorganic particulate has the particle diameter of 20 to 50 nanometers.
4. blooming as claimed in claim 1, wherein said vibrin are polyethylene terephthalate.
5. blooming as claimed in claim 1, wherein said polyacrylate resin are polymethylmethacrylate.
6. blooming as claimed in claim 1, wherein said polyalkenes resin is tygon or polypropylene.
7. blooming as claimed in claim 1, wherein said coating further comprise fluorescer or ultraviolet light absorber or its potpourri.
8. method that strengthens LCD brightness, it comprises blooming as claimed in claim 1 is used in the LCD reflectance coating as backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100299819A CN100385307C (en) | 2004-04-08 | 2004-04-08 | Optical membrane and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100299819A CN100385307C (en) | 2004-04-08 | 2004-04-08 | Optical membrane and use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1680852A CN1680852A (en) | 2005-10-12 |
| CN100385307C true CN100385307C (en) | 2008-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100299819A Expired - Fee Related CN100385307C (en) | 2004-04-08 | 2004-04-08 | Optical membrane and use thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN100385307C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4957727B2 (en) * | 2006-09-29 | 2012-06-20 | コニカミノルタアドバンストレイヤー株式会社 | Manufacturing method of optical film |
| CN101975973B (en) * | 2010-09-16 | 2013-12-11 | 宁波激智科技股份有限公司 | Optical reflective film, preparation method thereof and liquid crystal display device using same |
| CN102093633B (en) * | 2010-12-06 | 2013-01-23 | 宁波东旭成化学有限公司 | Method for forming optical reflective film |
| CN102206379B (en) * | 2011-03-30 | 2013-03-27 | 东华大学 | Micro-foaming reflective film and preparation method thereof |
| CN103660465B (en) * | 2013-11-29 | 2016-08-17 | 北京康得新复合材料股份有限公司 | reflector plate and preparation method thereof |
| CN103969723B (en) * | 2014-04-30 | 2016-08-24 | 宁波东旭成新材料科技有限公司 | A kind of efficiently diffusing reflection sexual reflex film and preparation method thereof |
| CN104788700A (en) * | 2015-03-31 | 2015-07-22 | 苏州市鼎立包装有限公司 | Fluorescent protective film and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07179808A (en) * | 1993-12-22 | 1995-07-18 | Asahi Glass Co Ltd | Coating composition |
| CN1325423A (en) * | 1998-11-10 | 2001-12-05 | 宝洁公司 | A file with UV-barrier properties |
-
2004
- 2004-04-08 CN CNB2004100299819A patent/CN100385307C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07179808A (en) * | 1993-12-22 | 1995-07-18 | Asahi Glass Co Ltd | Coating composition |
| CN1325423A (en) * | 1998-11-10 | 2001-12-05 | 宝洁公司 | A file with UV-barrier properties |
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| Publication number | Publication date |
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| CN1680852A (en) | 2005-10-12 |
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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. |
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Granted publication date: 20080430 Termination date: 20200408 |
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