CN100416369C - Light-focusing plate - Google Patents
Light-focusing plate Download PDFInfo
- Publication number
- CN100416369C CN100416369C CNB2005101090133A CN200510109013A CN100416369C CN 100416369 C CN100416369 C CN 100416369C CN B2005101090133 A CNB2005101090133 A CN B2005101090133A CN 200510109013 A CN200510109013 A CN 200510109013A CN 100416369 C CN100416369 C CN 100416369C
- Authority
- CN
- China
- Prior art keywords
- concentration piece
- piece according
- resin
- coating
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention supplies the condense sheet contains one substrate. The one side of the substrate has one light dispersion layer with concave or convex coarse structure. The condense sheet of the invention can be used as light dispersion condense sheet in liquid crystal display.
Description
Technical field
The present invention relates to a kind of concentration piece, especially refer to a kind of light diffusing lens that can be applicable in the LCD.
Background technology
In general, the primary structure of LCD (being called for short " 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 guide plate and various bloomings etc.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.
The concentration piece industry is commonly referred to brightness enhancement film (Brightness Enhancement Film) or prismatic lens (prism film), is only to utilize high energy UV light that special acryl resin is hardened into the microscopic prisms structure on the polyester optical thin film of 50-200 μ m at thickness.And the main function of concentration piece will be issued to from all directions ray-collecting at random from light guide plate (lightguide) by refraction and inner full-reflection, and focus 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 concentration piece at present delivers, for example the patent case WO 96/23649 of 3M company discloses the method for avoiding optically focused prism structure drift angle to subside, it is to utilize type of heating the prismatic lens of finishing to be heated to more than the glass transition temperature of its resin, to increase its prism vertex angle hardness.But the concentration piece that this piece patent is disclosed, as shown in Figure 1, owing to have only a surface to have concentration structure, and its lower surface is level and smooth shape, reassociate after can't effectively being spread the light that comes by light source evenly, so its inhomogeneity effect is not very desirable.
The method that general industry solves is nothing more than placing a slice diffusion barrier again in the concentration piece below, and the shortcoming of the method is that cost increases, and backlight module complicates.Fig. 2 is a traditional backlight module optically focused synoptic diagram.As shown in Figure 2, a diffusion barrier (2) is disposed between light source (1) and the concentration piece (3).Given this, the invention provides a kind of concentration piece to improve above-mentioned shortcoming.For instance, preferably enforcement aspect of the present invention, as shown in Figure 3, after will with blending the resin of plastic particles being arranged according to the lower surface coating of the concentration piece of WO 96/23649, curing molding in addition, thereby light is earlier through resin coating layer that blending thus has a plastic particles in addition after the homogenising, again through prism structure with light-ray condensing, thereby obtain preferred light uniformity coefficient.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of concentration piece, and it comprises a substrate, and a side of wherein said substrate comprises a light diffusion layer with concavo-convex coarse structure.
Description of drawings
The synoptic diagram of the concentration piece that Fig. 1 is disclosed for WO 96/23649;
Fig. 2 is a traditional backlight module optically focused synoptic diagram; With
Fig. 3 is the side view of embodiments of the invention.
Embodiment
The employed substrate of concentration piece of the present invention, it is known to can be any those skilled in the art in the invention, for example glass or plastics.Above-mentioned plastic there is no particular restriction, and it is such as but not limited 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 their potpourri.Be preferably vibrin or polycarbonate resin, more preferably polyethylene terephthalate.The thickness of substrate depends on the demand of the optical articles of wanting usually, and they are preferably between about 50 μ m (micron) and about 150 μ m.
Concentration piece of the present invention will carry out optically focused from the earlier even diffusion of the light of light source again in conjunction with the characteristic of traditional concentration piece and diffusion barrier.For reaching the light diffusion effect, therefore the incidence surface at its substrate forms the micro concavo-convex structure, and as light diffusion layer, its diffusibleness (Dfs) is between 5%-90%, preferably between 40%-90%.Light diffusion layer formation method there is no particular restriction, and well-known for the those skilled in the art, it is such as but not limited to serigraphy, spraying or embossing processing etc.Preferred mode has the coating of concave-convex micro-structure for applying at substrate surface, and its thickness is between 1-50 μ m, and this coating has the ability with the light diffusion, and it comprises particle and bond, the grain diameter size be 1 μ m to 100 μ m, preferably between 10 μ m to 50 μ m.Particle shape there is no particular restriction, for example sphere, rhombus etc.Particle type does not have particular restriction yet, can be organic filler, for example acryl resin, styrene resin, carbamate resins, silicone resin or its potpourri; Inorganic particulate, for example zinc paste, silicon dioxide, titania, zirconia, aluminium oxide, zinc sulphide, barium sulphate or its potpourri; Or both combinations, preferred particle is an organic filler.
Cement used in the present invention there is no particular restriction, and well-known for the those skilled in the art, it is such as but not limited to acryl resin, polyamide, epoxy resin, polyimide resin or vibrin.
Coating with concave-convex micro-structure of the present invention can optionally be added rigidizer.Rigidizer used in the present invention, it act as and can produce molecule and intermolecular chemical bond with cement, forms interlinkage, and strand is interlocked connects to a kind of reticulate texture, and causes a kind of cohesion strong, is difficult for the giant molecule of fusion.Rigidizer used in the present invention, well-known for the those skilled in the art, it for example is a polyisocyanate (polyisocyanate).
For reaching the light spotlight effect, the present invention can comprise at least one optical layers as light collecting layer at the exiting surface of above-mentioned substrate, and described optical layers is to be comprised the composition of resin, light initiator and crosslinking chemical and formed by coating on substrate.The resin that is suitable for, well-known for the those skilled in the art, it is such as but not limited to vibrin, polyacrylate resin or polycarbonate resin etc.Be applicable to that smooth initiator of the present invention there is no particular restriction, be can to produce free radical after rayed, and see through the transmission initiated polymerization of free radical, it for example is a benzophenone.The crosslinking chemical that is suitable for for example has a plurality of functional groups for having (methyl) esters of acrylic acid of one or more functional group, being preferably, improving glass transition temperature.Above-mentioned light collecting layer can optionally add any conventional additives, for example inorganic filler, levelling agent, defoamer or antistatic agent etc.
Light collecting layer of the present invention can be planar film or have microstructure form that wherein, microstructure form for example includes but not limited to rule or irregular prism decorative pattern, ring-type prism decorative pattern, solid angle decorative pattern, pearl decorative pattern or lensing decorative pattern.Preferably, have the prism decorative pattern of rule on the described light collecting layer, this type light collecting layer has preferred light harvesting effect, therefore can make display possess enhanced brightness.
Concentration piece of the present invention can be used in the backlight module of display.Concentration piece of the present invention has light concurrently and spreads and the optically focused effect, when light passes through concentration piece, earlier light is evenly spread afterwards optically focused again, can eliminate the light and shade fringe phenomena, reaches light and all spends effect together.
Following examples are used for that the invention will be further described, but not in order to limit the scope of the invention.Modification that any those skilled in the art can realize easily and change are included in the scope of this case instructions disclosure and appended claims.
Embodiment
Example
Make concentration piece of the present invention according to mode described below, the composition of each embodiment is as described in the following table 1.
Respectively 50% EM210 with part by weight
(the 2-phenoxyethyl acrylate is sold by Eternal company) and 624-100
(epoxy acrylate is sold by Eternal company) mixes, and adds light inlet initiator (benzophenone (benzophenone), Chivacure then
BP, two key chemical industry provide) stir together to form a colloidal state coating composition.
With above-mentioned colloidal state coating composition packing, to go into respect to colloidal state coating weight number percent be 15% organic filler (J-4P and GR-400T in blending respectively, sold by company on the root) after, it is coated a BEF II (concentration piece that is sold by 3M company), in addition after the drying, obtain the blooming that coating thickness is 40 μ m with energy-ray.
The gained diaphragm is carried out mist degree and diffusibleness test (testing according to the NDH2000 instrument that NIPPON DENSHOKU is provided) and brightness increase and test (the BM-7 that provides according to TOPCON company
Instrument),
Shown in the following tabulation 1 of gained result:
Table one
| Mist degree (Haze) | Diffusibleness (Dfs) | Brightness increases | |
| 1 | 93 | 7 | 1.55 |
| 2 | 96 | 9 | 1.54 |
| 3 | 97 | 76 | 1.53 |
| 4 | 98 | 80 | 1.50 |
1.BEF the uncoated any coating in the II back side
2.BEF the coating of the II back side contains the coating that mean size is 2 μ m plastic particles
3.BEF the coating of the II back side contains the coating that mean size is 14 μ m plastic particles
4.BEF the coating of the II back side contains the coating that mean size is 40 μ m plastic particles
As shown in Table 1, the concentration piece back side be coated with contain organic particle coating after, can improve mist degree and diffusibleness, especially when organic particle diameter during between 10 μ m-50 μ m, especially obvious, therefore concentration piece of the present invention can reach the function that has diffusion and optically focused concurrently.
Claims (11)
1. concentration piece, it comprises:
One substrate, a side of described substrate comprises a light diffusion layer with concavo-convex coarse structure, and opposite side comprises at least one optical layers as light collecting layer,
Wherein said light diffusion layer is by applying the coating of tool concave-convex micro-structure at substrate surface and form, and described coating comprises and has the particle of about 1 μ m to the diameter of about 100 μ m, and described light diffusion layer has the diffusibleness of 5%-90%.
2. concentration piece according to claim 1, wherein said light diffusion layer has the diffusibleness between 40%-90%.
3. concentration piece according to claim 1, the coating of wherein said tool concave-convex micro-structure comprise and have the particle of about 10 μ m to the diameter of about 50 μ m.
4. according to claim 1 or 3 described concentration pieces, wherein said particle is selected from by organic filler, inorganic particulate and group that its combination constitutes.
5. concentration piece according to claim 4, wherein said organic filler is selected from by acryl resin, styrene resin, carbamate resins, silicone resin and group that its potpourri constitutes.
6. concentration piece according to claim 4, wherein said inorganic particulate is selected from by zinc paste, silicon dioxide, titania, zirconia, aluminium oxide, zinc sulphide, barium sulphate and group that its potpourri constitutes.
7. concentration piece according to claim 1, the coating of wherein said tool concave-convex micro-structure comprises cement.
8. concentration piece according to claim 7, wherein said cement is selected from by acryl resin, polyamide, epoxy resin, polyimide resin and group that vibrin constitutes.
9. concentration piece according to claim 1, wherein said substrate are plastics or glass.
10. concentration piece according to claim 1, wherein said light collecting layer has microstructure form.
11. concentration piece according to claim 10, wherein said microstructure form are selected from by rule or irregular prism decorative pattern, ring-type prism decorative pattern, solid angle decorative pattern, pearl decorative pattern and lensing group that decorative pattern constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101090133A CN100416369C (en) | 2005-10-13 | 2005-10-13 | Light-focusing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101090133A CN100416369C (en) | 2005-10-13 | 2005-10-13 | Light-focusing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1949049A CN1949049A (en) | 2007-04-18 |
| CN100416369C true CN100416369C (en) | 2008-09-03 |
Family
ID=38018612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101090133A Expired - Fee Related CN100416369C (en) | 2005-10-13 | 2005-10-13 | Light-focusing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100416369C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530730A (en) * | 2003-03-10 | 2004-09-22 | ������������ʽ���� | Flash assembly, camera device and portable terminal |
| US6822707B2 (en) * | 2001-10-11 | 2004-11-23 | Nitto Denko Corporation | Optical sheet and display device having the optical sheet |
| CN1570679A (en) * | 2003-07-26 | 2005-01-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and light conducting plate |
| CN1614471A (en) * | 2003-11-08 | 2005-05-11 | 三星电子株式会社 | Light guide plate and backlight assembly having the same |
| CN1621905A (en) * | 2003-11-28 | 2005-06-01 | 鸿富锦精密工业（深圳）有限公司 | Backlight system |
-
2005
- 2005-10-13 CN CNB2005101090133A patent/CN100416369C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6822707B2 (en) * | 2001-10-11 | 2004-11-23 | Nitto Denko Corporation | Optical sheet and display device having the optical sheet |
| CN1530730A (en) * | 2003-03-10 | 2004-09-22 | ������������ʽ���� | Flash assembly, camera device and portable terminal |
| CN1570679A (en) * | 2003-07-26 | 2005-01-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and light conducting plate |
| CN1614471A (en) * | 2003-11-08 | 2005-05-11 | 三星电子株式会社 | Light guide plate and backlight assembly having the same |
| CN1621905A (en) * | 2003-11-28 | 2005-06-01 | 鸿富锦精密工业（深圳）有限公司 | Backlight system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1949049A (en) | 2007-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101202647B1 (en) | Composite optical film | |
| US7740945B2 (en) | Brightness enhancement film | |
| CN101738649B (en) | Composite optical film structure with multiple coatings | |
| KR100980072B1 (en) | Multi-functional optic film | |
| KR101781206B1 (en) | Microlens optical sheet, and backlight unit and liquid crystal display using same | |
| US7776424B2 (en) | Optical sheet | |
| US20100028660A1 (en) | Polymerizable composition and its uses | |
| CN2874533Y (en) | Anti-scraping light focusing sheet | |
| US20070126074A1 (en) | Optical sheet | |
| KR20100038024A (en) | Multi-coated hybrid optical film structure | |
| CN101630032A (en) | Reflective polarizer sheet | |
| CN101393274B (en) | Composite blooming | |
| CN2916693Y (en) | Multi-layer optical film | |
| CN200953051Y (en) | Composite optical film | |
| CN100589016C (en) | Polymerizable composition with high refractive index and uses thereof | |
| US7842380B2 (en) | Brightness enhancement film | |
| CN100416369C (en) | Light-focusing plate | |
| CN101339326B (en) | Polarized light reclamation film possessing dodging characteristic | |
| KR20100033664A (en) | Optical sheet | |
| KR100980068B1 (en) | Multi-functional optic film | |
| CN100476534C (en) | High-hardness optical film and use thereof | |
| CN2901366Y (en) | Composite optical film | |
| KR102014307B1 (en) | Optical film for mobile display | |
| TWI398699B (en) | Light-diffusing sheet and optical sheet for a back light unit | |
| CN100465663C (en) | Light-focusing prism |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Changxing Optical Material (Suzhou) Co., Ltd. Assignor: Changxing Chemical Industrial Co., Ltd. Contract record no.: 2011990000929 Denomination of invention: Light-focusing plate Granted publication date: 20080903 License type: Common License Open date: 20070418 Record date: 20110928 |
|
| C56 | Change in the name or address of the patentee |
Owner name: ETERNAL MATERIALS CO., LTD. Free format text: FORMER NAME: CHANGXING CHEMICAL INDUSTRIAL CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: China's Taiwan City, Kaohsiung three people's District, 578 road construction Patentee after: Changxing material industry limited-liability company Address before: Taiwan, China Patentee before: Changxing Chemical Industrial Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20201013 |