CN100476534C - High-hardness optical film and use thereof - Google Patents
High-hardness optical film and use thereof Download PDFInfo
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- CN100476534C CN100476534C CNB2004100745646A CN200410074564A CN100476534C CN 100476534 C CN100476534 C CN 100476534C CN B2004100745646 A CNB2004100745646 A CN B2004100745646A CN 200410074564 A CN200410074564 A CN 200410074564A CN 100476534 C CN100476534 C CN 100476534C
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- acrylate
- blooming
- blooming according
- diacrylate
- coating
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Abstract
A high hardness optical film consists of a transparent base plate and a coating layer coated on surface of base plate. It features that coating layer contains polymerized substrate and nanograde of inorganic particles scattered in coating layer, light-focusing structure is set on said optical film. A method for intensifying brightness of liquid crystal display panel is also disclosed.
Description
Technical field
The present invention relates to a kind of blooming.Blooming of the present invention has a concentration structure, can be used in the LCD condensing film as backlight.
Background technology
In recent years, that LCD (be called for short " LCD ") is being held under the arm is light, thin, short, little, heat and power consumption is low and the advantage of radiationless injury almost, progressively replaces conventional cathode ray tube (CRT) display.
Generally speaking, the primary structure of LCD comprises panel and backlight module two large divisions, faceplate part comprises for example tin indium oxide (ITO) electro-conductive glass, liquid crystal, alignment film, colored filter, polaroid, drive integrated circult etc., and the backlight module part then comprises for example fluorescent tube, light pipe and various bloomings etc.The whole optical appearance of LCD is the reciprocal effect that is subjected to all elements of backlight module part, and wherein, blooming has more been played the part of important role on screen brightness, uniformity coefficient, contrast and visual angle.
For can being presented, LCD better views and admires angle and color, the existing numerous trials of industry at present, for example, known can be by increasing the brightness that the fluorescent tube number improves the LCD panel, yet this not only causes too much heat to be accumulated in LCD easily, and has influence on the life-span and the quality of other element, can cause power consumption excessive simultaneously, must rely on the requirement that battery uses with off-line and can't satisfy many info class articles for use.
At present, in backlight module, utilize blooming miscellaneous, provide a kind of and can improve the LCD panel luminance, become most economical and easy solution so that light source is done the performance of full blast, but need do not changed any element design or consume the way of additional energy source.
Brightness enhancement film is called for short BEF (Brightness Enhancement Film) usually or refers to condensing film, it can be by for example at thickness only on the polyester optical thin film of 125 μ m, utilizes high-energy ultraviolet ray (UV) that special acryl resin is hardened into the microscopic prisms structure and make.The main function of brightness enhancement film is will be collected by the ghost line that light pipe (lightguide) is issued to from all directions by refraction and inner full-reflection, and focuses on positive visual angle (on-axis) direction of degree approximately ± 35, to improve the brightness of LCD.
How being applied to have in the backlight module many patent documentations for condensing film at present delivers, for example, the United States Patent (USP) the 4th, 791 of 3M company, disclose for No. 540 with uses that vertically overlap of the condensing film more than two, and then the backlight module of composition can increase brightness effectively.In addition, United States Patent (USP) the 5th, 828 is mentioned the backlight module that elements such as utilizing diffusion barrier and condensing film is formed, can effectively be increased the brightness of LCD panel for No. 488.
Condensing film commonly used is known to have prism peaks, if the hardness of prism peaks is not enough, will produce collapse phenomenon, causes the outward appearance of LCD panel to have dim spot to take place, and, a little less than this kind prism peaks often is highly brittle, cause scratch in assembling or the process of transporting easily.Therefore, how to increase the prism peaks hardness of condensing film, become the important topic of industry active research.
The present invention promptly provides a solution route at this problem.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of blooming, its comprise a transparency carrier and at least one deck coat the coating of this substrate surface, this coating comprises polymeric matrices and is scattered in wherein nano grade inorganic particulate, this blooming is for having concentration structure.
A kind of method that strengthens panel of LCD brightness that provides is provided.
Description of drawings
Fig. 1 represents blooming of the present invention.
Embodiment
As shown in Figure 1, blooming of the present invention comprise a transparency carrier 1 and at least one deck coat the coating 2 of this substrate surface, this coating comprises polymeric matrices and is scattered in wherein nano grade inorganic particulate.Blooming of the present invention has a concentration structure.
The employed substrate of blooming of the present invention can be any those skilled in the art and knows, and it for example is glass or plastic cement.Above-mentioned plastic substrate there is no particular restriction, its for example but be not restricted to vibrin (polyester resin), as polyethylene terephthalate (PET); Polyacrylate resin (polyacrylate resin) is as polymethylmethacrylate (PMMA); Polyolefin resin (polyolefin resin) is as tygon (PE) or polypropylene (PP); Polyimide resin (polyimide resin); Polycarbonate resin (polycarbonate resin); Polyurethane resin (polyurethane resin); Triafol T (TAC) or its potpourri.
The employed plastic substrate of blooming of the present invention is preferably vibrin, polycarbonate resin or its potpourri, more preferably polyethylene terephthalate.
The polymeric matrices that coating comprised of blooming of the present invention can be applicable to that the polymerization single polymerization monomer in the blooming manufacturing is polymerized by any those skilled in the art is known, and suitable polymerization single polymerization monomer example for example comprises epoxy diacrylate (epoxy diacrylate), halogenation epoxy diacrylate (halogenated epoxy diacrylate), methyl methacrylate (methyl methacrylate), isobornyl acrylate (isobornyl acrylate), 2-phenoxyethyl acrylate (2-phenoxy ethyl acrylate), acrylamide (acrylamide), styrene (styrene), halogenated styrenes (halogenated styrene), acrylic acid (acrylic acid), vinyl cyanide (acrylonitrile), methacrylonitrile (methacrylonitrile), acrylic acid xenyl epoxy ethyl ester (biphenylepoxyethylacrylate), halogenation acrylic acid xenyl epoxy ethyl ester (halogenated biphenylepoxyethyl acrylate), alkoxide epoxy diacrylate (alkoxylated epoxy diacrylate), alkyl halide oxidation epoxy diacrylate (halogenated alkoxylated epoxy diacrylate), aliphatic carbamate diacrylate (aliphatic urethane diacrylate), aliphatic carbamate six acrylate (aliphatic urethanehexaacrylate), aromatic amino ester formate six acrylate (aromatic urethane hexaacrylate), bisphenol-A epoxy diacrylate (bispheno1-A epoxy diacrylate), novolaks epoxy acrylate (novolac epoxy acrylate), polyester acrylate (polyester acrylate), polyester diacrylate (polyester diacrylate), the carbamic acid oligomer ester of acrylate ended (acrylate-cappedurethane oligomer), or its potpourri.Preferred polymerization single polymerization monomer is halogenation epoxy diacrylate, methyl methacrylate, 2-phenoxyethyl acrylate, aliphatic carbamate diacrylate, aliphatic carbamate six acrylate, reaches aromatic amino ester formate six acrylate.
The inorganic particles kind that can be used among the present invention there is no particular restriction, and it is such as but not limited to titania (TiO
2), silicon dioxide (SiO
2), zinc paste (ZnO), barium sulphate (BaSO
4), lime carbonate (CaCO
3), zirconia (ZrO
2) or its potpourri.This inorganic particles is preferably silicon dioxide.This inorganic particles has the particle size of nanoscale (nanoscale), generally speaking, is meant that particle diameter is between 1 to 100 nanometer.Inorganic particles used in the present invention is preferably the particle size with from 10 to 60 nanometers.
The employed coating of blooming of the present invention has 1.4 to 2.5 refractive index, is preferably from 1.4 to 2.0.
For blooming of the present invention, the proportion of composing of this polymer substrate and nano grade inorganic particulate is unimportant, and it can determine according to desired final purpose.
The coating of blooming of the present invention can optionally comprise the known additive of any those skilled in the art such as levelling agent (leveling agent), defoamer (defoamer), antistatic agent (antistatic agent) etc.
The coating of blooming of the present invention generally has the thickness from 5 μ m to 100 μ m, is preferably from 10 μ m to 40 μ m.
Blooming of the present invention can be known according to the those skilled in the art any way manufacturing, for example, can be via the method manufacturing that comprises following steps:
(a) polymer substrate, light initiator and nano grade inorganic particulate are mixed, to form a colloidal state coating composition;
(b) this colloidal state coating composition is coated on the transparency carrier, forming a coating,
(c) utilize roller embossing or hot extrusion mode to make this coating form a concentration structure then; And
(d) under normal temperature, to this coating irradiation energy ray or heating or both and with so that this coating solidify.
The coating curing schedule of above-mentioned steps (d) is preferably by irradiation energy ray generation photopolymerization reaction and is undertaken, this energy-ray is meant the light source of certain limit wavelength, for example it can be ultraviolet light, infrared light, visible light or heat ray (radiation or radiation) etc., is preferably ultraviolet light.Exposure intensity can be from 1 to 300 millijoule/square centimeter (mJ/cm
2), be preferably from 10 to 100mJ/cm
2
If need, can repeat above steps on this transparency carrier, to form a plurality of coatings.
Blooming of the present invention is a concentration structure, can be used in the LCD condensing film as backlight.The existence of nano grade inorganic particulate improves the hardness of prism peaks effectively in this film, can avoid the concentration structure collapse phenomenon, thereby promotes the brightness of panel of LCD.
Therefore, the present invention provides a kind of method that strengthens panel of LCD brightness in addition, and it comprises aforementioned blooming is used in the LCD condensing film as backlight, to strengthen the brightness of panel of LCD.
The invention will be further described in order to be used for for following examples, and a right and wrong is in order to limit the scope of the invention.Correction that any those skilled in the art can reach easily and change are included within this case instructions disclosure and the claims.
Example
Make blooming of the present invention according to mode described below, the prescription of each embodiment is formed as described in the following table 1.
Table 1
With above-mentioned part by weight
(the 2-phenoxyethyl acrylate is sold by Eternal company) and 624-
(epoxy acrylate is sold by Eternal company) mixes, add then the light inlet initiator (benzophenone (benzophenone),
BP, two key chemical industry provide) stir together, this moment, rotating speed was 1000rpm.Then add SiO again
2(601A-
, sold by Eternal company), to form a colloidal state coating composition.
Above-mentioned colloidal state coating composition is coated on polyethylene terephthalate (PET) substrate (
Sold by TORAY company), after the drying, obtain the blooming that thickness is 25 μ m.
With the gained blooming carry out refractive index test (according to the AUTOMATICREFRACTOMETER GPR11-37 method of testing that is provided by INDEX INSTRUMENTS) and hardness test (according to
The DIN53157 method of testing that is provided), shown in the following tabulation 2 of gained result.
Table 2
| Refractive index (25 ℃) | Hardness | |
| A | 1.539 | 130 |
| B | 1.538 | 132 |
| C | 1.538 | 140 |
| D | 1.536 | 148 |
| E | 1.535 | 148 |
| F | 1.535 | 150 |
As shown in Table 2, in the coating that this substrate surface was coated with, after having added the nano grade inorganic particulate, refractive index is almost constant, yet hardness has but improved significantly, therefore can avoid the collapse phenomenon of concentration structure, so can strengthen the brightness of panel of LCD.
Claims (14)
1. blooming, its comprise a transparency carrier and at least one deck coat the coating of this substrate surface, wherein this coating comprises polymeric matrices and nano grade inorganic particulate, and this blooming has a concentration structure, and wherein this polymeric matrices is served as reasons and is selected from epoxy diacrylate, the halogenation epoxy diacrylate, methyl methacrylate, isobornyl acrylate, the 2-phenoxyethyl acrylate, acrylamide, styrene, halogenated styrenes, acrylic acid, vinyl cyanide, methacrylonitrile, acrylic acid xenyl epoxy ethyl ester, halogenation acrylic acid xenyl epoxy ethyl ester, the aliphatic carbamate diacrylate, the alkoxylate epoxy diacrylate, the halogenated alkoxy epoxy diacrylate, aliphatic carbamate six acrylate, aromatic amino ester formate six acrylate, the bisphenol-A epoxy diacrylate, the novolaks epoxy acrylate, polyester acrylate, polyester diacrylate, the polymerization single polymerization monomer of the group that carbamic acid oligomer ester of acrylate ended and composition thereof is formed produces polyreaction by ultraviolet light and gets.
2. blooming according to claim 1, wherein this substrate is plastic cement or glass.
3. blooming according to claim 2, wherein this plastic cement is for being selected from vibrin, polyacrylate resin, polyalkenes resin, polyimide resin, polycarbonate resin, polyurethane resin, Triafol T, and composition thereof the group that formed.
4. blooming according to claim 3, wherein this plastic cement is a polyethylene terephthalate.
5. blooming according to claim 1, wherein this nano grade inorganic particulate is to be selected from the group that titania, silicon dioxide, zinc paste, barium sulphate, lime carbonate, zirconia and composition thereof are formed.
6. blooming according to claim 1, wherein this polymeric matrices is served as reasons and is selected from the polymerization single polymerization monomer polymerization of the group that halogenation epoxy diacrylate, methyl methacrylate, 2-phenoxyethyl acrylate, aliphatic carbamate diacrylate, aliphatic carbamate six acrylate, aromatic amino ester formate six acrylate and composition thereof are formed and gets.
7. blooming according to claim 1, wherein this coating has 1.4 to 2.5 refractive index.
8. blooming according to claim 7, wherein this coating has 1.4 to 2.0 refractive index.
9. blooming according to claim 1, wherein this coating has the thickness from 5 μ m to 100 μ m.
10. blooming according to claim 9, wherein this coating has the thickness from 10 μ m to 40 μ m.
11. blooming according to claim 1, wherein the particle diameter of this inorganic particles is 1～100 nanometer.
12. blooming according to claim 11, wherein the particle diameter of this inorganic particles is 10～60 nanometers.
13. blooming according to claim 1, it is the condensing film as backlight.
14. a method that strengthens panel of LCD brightness, it comprises blooming according to claim 1 is used in the LCD condensing film as backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100745646A CN100476534C (en) | 2004-09-08 | 2004-09-08 | High-hardness optical film and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100745646A CN100476534C (en) | 2004-09-08 | 2004-09-08 | High-hardness optical film and use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1746739A CN1746739A (en) | 2006-03-15 |
| CN100476534C true CN100476534C (en) | 2009-04-08 |
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ID=36166336
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100745646A Expired - Fee Related CN100476534C (en) | 2004-09-08 | 2004-09-08 | High-hardness optical film and use thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852948B (en) * | 2010-04-23 | 2011-07-27 | 上海凯鑫森产业投资控股有限公司 | Optical compound slice for backlight module |
| CN102060963B (en) * | 2010-07-20 | 2014-02-05 | 黄柱联 | Light-curable material for manufacturing LED (Light Emitting Diode) lens |
| CN102129090B (en) * | 2010-11-30 | 2012-07-25 | 中国乐凯胶片集团公司 | Optical hardening film |
| CN107340554A (en) * | 2016-05-03 | 2017-11-10 | 刘晋佑 | Has the luminescent film of energy-saving effect |
| CN108319060A (en) * | 2017-12-26 | 2018-07-24 | 江西省平波电子有限公司 | A kind of highlighted liquid crystal display die set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113509A (en) * | 1994-04-08 | 1995-12-20 | 日本Arc株式会社 | Coating composition capable of yielding a cured product having a high refractive index and coated articles obtained therefrom |
| US5760126A (en) * | 1996-12-20 | 1998-06-02 | Minnesota Mining And Manufacturing Company | Aqueous fluorochemical compositions and abrasion-resistant coatings therefrom |
| CN1255202A (en) * | 1997-05-09 | 2000-05-31 | 美国3M公司 | Brighteness enhancement article |
| US20030100693A1 (en) * | 2000-12-21 | 2003-05-29 | 3M Innovative Properties Company | Optical product having a high refractive index microreplication resin |
-
2004
- 2004-09-08 CN CNB2004100745646A patent/CN100476534C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113509A (en) * | 1994-04-08 | 1995-12-20 | 日本Arc株式会社 | Coating composition capable of yielding a cured product having a high refractive index and coated articles obtained therefrom |
| US5760126A (en) * | 1996-12-20 | 1998-06-02 | Minnesota Mining And Manufacturing Company | Aqueous fluorochemical compositions and abrasion-resistant coatings therefrom |
| CN1255202A (en) * | 1997-05-09 | 2000-05-31 | 美国3M公司 | Brighteness enhancement article |
| US20030100693A1 (en) * | 2000-12-21 | 2003-05-29 | 3M Innovative Properties Company | Optical product having a high refractive index microreplication resin |
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| Publication number | Publication date |
|---|---|
| CN1746739A (en) | 2006-03-15 |
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Address after: Taiwan, China Patentee after: Changxing material industry limited-liability company Address before: Taiwan, China Patentee before: Changxing Chemical Industrial Co., Ltd. |
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