CN100381836C - Spreading film - Google Patents
Spreading film Download PDFInfo
- Publication number
- CN100381836C CN100381836C CNB2004100622398A CN200410062239A CN100381836C CN 100381836 C CN100381836 C CN 100381836C CN B2004100622398 A CNB2004100622398 A CN B2004100622398A CN 200410062239 A CN200410062239 A CN 200410062239A CN 100381836 C CN100381836 C CN 100381836C
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- CN
- China
- Prior art keywords
- diffusion barrier
- diffusion
- resin
- barrier according
- optics
- 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.)
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- Compositions Of Macromolecular Compounds (AREA)
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Abstract
The present invention provides a diffusion film which is characterized in that the diffusion film comprises optical diffusion particles which comprise surface functional groups. Because the optical diffusion particles which comprise the surface functional groups can react with a stiffening agent in the diffusion film directly, the adhesiveness of the optical diffusion particles and the diffusion film can be effectively enhanced, the dosage of a binding agent in the diffusion film is reduced, and the brightness of the diffusion film is enhanced.
Description
Technical field
The invention relates to a kind of diffusion barrier that can be applicable in the LCD, especially about a kind of diffusion barrier that comprises the optics diffusion particulate that contains surface functionalities.
Background technology
Backlight module often is applied in the various liquid crystal panels, so that the backlight of liquid crystal to be provided.Because the difference of liquid crystal form, the form of backlight module is also different.In general, backlight module is by light emitting source, light guide plate and blooming, such as diffusion barrier, reflectance coating etc. composition.Diffusion barrier is the top that is positioned at light guide plate, and it can be done scattering to the light that sees through light guide plate and handle, and makes the distribution of light more even, to reach the effect of atomizing.
General diffusion barrier commonly used is to utilize transparent fine grained as scattering particle, and use cement and rigidizer to produce the interlinkage reaction, scattering particle being attached to the substrate of high light transmittance, this optics behavior is to utilize light to pass scattering particle and the effect that produces the light diffusion.In addition, bad for fear of scattering particle and substrate attachment, influence the running of backlight module, can use cement so that scattering particle tack preferably to be provided usually.Yet excessive cement coats scattering particle, but can cause the brightness of diffusion barrier to reduce.
So utilize the optics diffusion particulate contain surface functionalities to replace traditional optical diffusion particulate, can be directly and the rigidizer effect of reacting, the increase tack can significantly reduce the consumption of cement again, and the brightness of enhancing diffusion barrier can effectively solve the aforesaid drawbacks.
Summary of the invention
The purpose of this invention is to provide a kind of diffusion barrier, it comprises the optics diffusion particulate that contains surface functionalities, effectively to address the above problem.
Another object of the present invention provides a kind of diffusion barrier, and it comprises a base material, has the coating of the optics diffusion particulate that contains surface functionalities at least one surface of wherein said base material.
Embodiment
Diffusion barrier of the present invention is that resin is formed mainly by transparent resin as vibrin, polycarbonate-based resin or polyene, and comprises the optics diffusion particulate that contains surface functionalities in the transparent resin.
The present invention provides a kind of diffusion barrier in addition, and it comprises a base material, has the coating of the optics diffusion particulate that contains surface functionalities at least one surface of wherein said this base material.
In addition, diffusion barrier of the present invention comprises cement and rigidizer in addition.
The employed base material of diffusion barrier among the present invention, by the those skilled in the art is known, it for example is made up of macromolecule resin.Above-mentioned macromolecule resin base material does not have particular restriction, for example be polyacrylate resin, polycarbonate, polystyrene, polyolefin, cellulose acetate, polyimide resin or vibrin, be preferably vibrin, as polyethylene terephthalate or poly-naphthalenedicarboxylic acid ethyl ester.
Cement used in the present invention does not have particular restriction, and it for example is acryl resin, polyamide, epoxy resin, polyimide resin or vibrin.
The rigidizer that the present invention uses, it act as and can produce molecule and intermolecular chemical bond with the surface functionalities of cement or optics diffusion particulate, forms interlinkage, and strand is interlocked connects to a kind of reticulate texture, and cause a kind of cohesion strong, be difficult for the giant molecule of fusing.Rigidizer used in the present invention, by the those skilled in the art is known, it for example is a polyisocyanate (polyisocyanate).
Optics diffusion particulate used in the present invention, by the those skilled in the art is known, it for example is but not only is confined to acrylic resin, polystyrene resin, polyurethane resin, epoxy resin or its potpourri, the surface that it is characterized by optics diffusion particulate is contained can produce the functional group of interlinkage reaction with rigidizer, and it for example but not only be confined to hydroxyl (OH), carboxyl (COOH) or amino (NH
2); The optics diffusion particulate that contains surface functionalities preferably is polyvalent alcohol (polyol) resin.
The optics diffusion particulate that contains surface functionalities used in the present invention, its particle size is generally 1 to 50 micron, is preferably 3 to 30 microns.
In addition, diffusion barrier of the present invention can see that concrete condition comprises the known adjuvant that can be used for diffusion barrier of those skilled in the art, and it for example but not only be confined to leveling agent, stabilization agent, anti-deterioration agent and/or spreading agent, fluorescent bleaches or ultraviolet light absorber.
Owing to contain the direct and rigidizer reaction of optics diffusion particulate energy of surface functionalities in the diffusion barrier of the present invention, therefore can increase the tack of optics diffusion particulate and diffusion barrier, the consumption of minimizing cement, and the brightness of enhancing diffusion barrier.
Diffusion barrier of the present invention also can be used as blooming, is applied in the backlight liquid crystal display module, to reach the double effects that strengthens LCD brightness and light diffusion.
Below what is claimed is in order to define Reasonable Protection scope of the present invention.Yet will be appreciated that the those skilled in the art also should belong in the rational protection domain of the present invention based on all conspicuous improvement that announcement of the present invention can realize.
Claims (7)
1. diffusion barrier, it comprises a base material, it is characterized by the coating of the optics diffusion particulate, cement and the rigidizer that have at least a substrate surface to comprise to contain surface functionalities, wherein this optics diffusion particulate is made up of polyhydric alcohol polymer, and the particle diameter with 1 to 50 micron, this cement are to be selected from the group that is made up of acryl resin, polyamide, epoxy resin, polyimide resin and vibrin.
2. diffusion barrier according to claim 1, wherein this surface functionalities is to be hydroxyl, carboxyl or amino.
3. diffusion barrier according to claim 1, wherein this optics diffusion particulate that contains surface functionalities has 3 to 30 microns particle diameter.
4. diffusion barrier according to claim 1, wherein this base material is made up of macromolecule resin.
5. diffusion barrier according to claim 4, wherein this macromolecule resin is to be selected from the group that is made up of polyacrylate resin, polycarbonate, polystyrene, polyolefin, cellulose acetate, polyimide resin and vibrin.
6. diffusion barrier according to claim 5, wherein this macromolecule resin is polyethylene terephthalate or poly-naphthalenedicarboxylic acid ethyl ester.
7. diffusion barrier according to claim 1, wherein this rigidizer is a polyisocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100622398A CN100381836C (en) | 2004-07-01 | 2004-07-01 | Spreading film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100622398A CN100381836C (en) | 2004-07-01 | 2004-07-01 | Spreading film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715957A CN1715957A (en) | 2006-01-04 |
| CN100381836C true CN100381836C (en) | 2008-04-16 |
Family
ID=35821956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100622398A Expired - Fee Related CN100381836C (en) | 2004-07-01 | 2004-07-01 | Spreading film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100381836C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201416719A (en) * | 2012-10-16 | 2014-05-01 | kai-xiong Cai | Light diffusing member |
| CN107907926B (en) * | 2017-12-28 | 2021-03-02 | 深圳大学 | Light diffusion plate and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000089007A (en) * | 1998-09-17 | 2000-03-31 | Keiwa Inc | Light diffusing sheet and back light unit using the same |
| US6141149A (en) * | 1996-02-29 | 2000-10-31 | 3M Innovative Properties Company | Multilayer film having a continuous and disperse phase |
| CN1453596A (en) * | 2002-03-26 | 2003-11-05 | 惠和股份有限公司 | Optical diffusion barrier and relative back light module |
| US6709143B2 (en) * | 2001-02-22 | 2004-03-23 | Keiwa Kabushiki Kaisha | Light diffusion sheet and backlight unit using the same |
| CN1504770A (en) * | 2002-11-28 | 2004-06-16 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and its preparing process |
-
2004
- 2004-07-01 CN CNB2004100622398A patent/CN100381836C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6141149A (en) * | 1996-02-29 | 2000-10-31 | 3M Innovative Properties Company | Multilayer film having a continuous and disperse phase |
| JP2000089007A (en) * | 1998-09-17 | 2000-03-31 | Keiwa Inc | Light diffusing sheet and back light unit using the same |
| US6709143B2 (en) * | 2001-02-22 | 2004-03-23 | Keiwa Kabushiki Kaisha | Light diffusion sheet and backlight unit using the same |
| CN1453596A (en) * | 2002-03-26 | 2003-11-05 | 惠和股份有限公司 | Optical diffusion barrier and relative back light module |
| CN1504770A (en) * | 2002-11-28 | 2004-06-16 | 鸿富锦精密工业（深圳）有限公司 | Light conducting plate and its preparing process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1715957A (en) | 2006-01-04 |
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| 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 |
Owner name: ETERNAL MATERIALS CO., LTD. Free format text: FORMER NAME: CHANGXING CHEMICAL INDUSTRIAL CO., LTD. |
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| 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. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20210701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |