CN104570172A - Optical diffusion structure and backlight source device - Google Patents
Optical diffusion structure and backlight source device Download PDFInfo
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- CN104570172A CN104570172A CN201410764888.6A CN201410764888A CN104570172A CN 104570172 A CN104570172 A CN 104570172A CN 201410764888 A CN201410764888 A CN 201410764888A CN 104570172 A CN104570172 A CN 104570172A
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- layer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
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- Planar Illumination Modules (AREA)
Abstract
The invention discloses an optical diffusion structure and a backlight source device. The optical diffusion structure comprises a transparent substrate layer made of an optical transparent material, wherein a diffusion coating is arranged on the upper surface of the transparent substrate layer; an optical glue layer is arranged on the lower surface of the transparent substrate layer; and a release layer is arranged on the lower surface of the optical glue layer. The backlight source device comprises a light source, a reflecting film, a light guide layer and a frame, wherein an optical glue layer is arranged above the light guide layer; a transparent substrate layer is arranged on the upper surface of the optical glue layer; a diffusion coating is arranged on the transparent substrate layer; and diffusion particles are arranged in the diffusion coating. The optical glue layer is introduced between a diffusion film and the light guide plate, so that the diffusion film can be smoothly applied to the surface of the light guide plate, the diffusion film is kept smooth and does not deform under long-term nonuniform temperature distribution, unstable light output caused by a gap difference is avoided, other optical defects are avoided, light loss can be reduced, the brightness of a backlight source and a liquid crystal display in a subsequent application is improved, and the energy consumption is reduced.
Description
Technical field
The backlight device that the present invention relates to a kind of optics diffusion structure assembly and use this optics diffusion structure assembly to manufacture, this backlight device can be applied in kinds of displays part and display application.
Background technology
Existing optical diffusion is widely used in LCD backlight source, advertising lamp box, lighting, and mobile communication equipment button etc. needs on the device of light source to provide Uniform Illumination.The fast development of LCD backlight source in recent years and the extensive use in mobile communication equipment display, laptop computer displays, desktop computer display and large-size liquid crystal television, improve increasingly to the performance requirement of optical diffusion in backlight.
The existing optical diffusion being applied to LCD backlight source mostly is the organic film adopting stretching technique to produce and the plural layers adopting coating method to produce, the scattering particles wherein containing different-grain diameter in the coating layer of the plural layers adopting coating method to produce.As shown in Figure 1, it is the structural representation of the optics diffusion structure that employing coating method of the prior art is produced.It comprises transparent substrate layer 803, and the side of described transparent substrate layer is provided with a diffusion coating 802, and the opposite side of described transparent substrate layer is provided with an anti-adhesive coating 804, and fills out in described diffusion coating and be provided with diffusion particle 801.
In the assembling process of backlight source module and liquid crystal indicator, above-mentioned diffusion barrier is by being directly positioned on light guide plate after cross cutting.In an assembling process, particularly giant-screen product, is easy to produce due to gap difference between light guide plate, causes optical transport and show bad.And in follow-up Long-Time Service process, because the long-term heatproof of diffusion barrier is uneven, also easily cause diffusion barrier to be out of shape, also easily produce same problem.
Summary of the invention
The object of this invention is to provide a kind of optics diffusion structure assembly and backlight device, it can solve of the prior art due to diffusion barrier out-of-flatness, is easy to produce due to gap difference between light guide plate, causes optical transport and shows bad.Or due to the long-term heatproof inequality of diffusion barrier, easily cause diffusion barrier to be out of shape, also easily produce optical transport and show bad shortcoming.
Technical problem to be solved by this invention is: provide a kind of light guide plate product or the backlight product that can adhere to the diffusion structure on light guide plate and use this optics diffusion structure.
The present invention is by the following technical solutions:
A kind of optics diffusion structure, it comprises the transparent base that an optically transparent material is made, and described transparent base upper surface is provided with diffusion coating, and lower surface is provided with one deck optical cement layer, is release layer below optical cement layer.Be provided with diffusion particle in described diffusion coating, the diameter of diffusion particle is 1 ~ 50um.
Described transparent base is the one of PET, PC and PS, and described diffusion particle is prepared by the one of silicone resin, PS and PMMA.
The thickness of described optical cement can be 1 ~ 150 micron, described optical cement layer is prepared by the one of pressure sensitive adhesive or structure glue, pressure sensitive adhesive is the one of silicone based, acrylic compounds, polyurethanes and rubber-like pressure sensitive adhesive, and structure glue is the one of silicone based, acrylic compounds, polyurethanes and rubber-like structure glue.
Described release layer is the protective layer of optical cement layer, is silicone based release film, Organic fluoride class release film, and other has the one of the thin-film material of release effect, and release film base material is the one in PET, PC, PP, synthetic paper.
A kind of backlight device, can be applicable to the industry such as liquid crystal display, Graphic Panel, comprises light source, reflectance coating, optical waveguide layer and frame.The top of optical waveguide layer is provided with optical cement layer, and optical cement layer upper surface is provided with transparent base, is provided with diffusion coating above transparent substrate layer, and diffusion coating inside is provided with diffusion particle.
Auxiliary diffusion layer is also provided with, prismatic brightness enhancing layer and filter layer, one wherein or its combination above diffusion coating.
Described optical waveguide layer is the one of light guide plate, light guiding film or other optical material.
Described light source is at least one in cold-cathode fluorescence lamp, external electrode fluorescent lamp, light emitting diode, hot-cathode fluorescent lamp and Organic Light Emitting Diode, described light source can be arranged on light guide plate one or both sides or between light guide plate and reflectance coating.
Compared with prior art, the invention has the advantages that by introducing optical cement layer between diffusion barrier and light guide plate, on the one hand can by diffusion barrier, particularly large area diffusion barrier, entirely sticks in light guide plate surface; Under long-term uneven temperature distribution situation, keep diffusion barrier smooth, not modification; The gap controlled between diffusion barrier and light guide plate by adhesive is remained unchanged, and prevent because difference gap is apart from causing light output unstable, and other optical defect occurs; Can light loss be reduced simultaneously, increase LCD brightness in backlight and subsequent applications, reduce energy consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of the optics diffusion structure in the present invention.
Fig. 2 is the first structural representation of the backlight device in the present invention.
Fig. 3 is the second structural representation of the backlight device in the present invention.
Fig. 4 is the 3rd structural representation of the backlight device in the present invention.
Fig. 1: 101 diffusion particle 102 diffusion coating 103 transparent substrate layer 104 optical cement layer 105 release film layers
Fig. 2: 201 diffusion particle 202 diffusion coating 203 transparent substrate layer 204 optical cement layer 205 optical waveguide layer 206 reflexed light film 207 light sources
Fig. 3: 301 diffusion particle 302 diffusion coating 303 transparent substrate layer 304 optical cement layer 305 optical waveguide layer 306 reflexed light film 307 light sources
Fig. 4: 401 diffusion particle 402 diffusion coating 403 transparent substrate layer 404 optical cement layer 405 optical waveguide layer 406 reflexed light film 407 light sources
Detailed description of the invention
The specific embodiment of the present invention is set forth: below in conjunction with drawings and Examples, the present invention is described in further detail below in conjunction with accompanying drawing one step.
Embodiment 1
As shown in Figure 1, optics diffusion structure comprises the silicone based pressure sensitive adhesive optical cement layer 104 of diffusion coating 102, and the Organic fluoride release layer 105 that transparent substrate layer 103, that a transparent PET makes comprises spherical PMMA diffusion particle 101.
| PET base material thick (μm) | Glue-line thick (μm) | Mist degree (%) | Light transmittance (%) |
| 100 | 25 | 96 | 77 |
Embodiment 2
As shown in Figure 1, optics diffusion structure comprises diffusion coating 102, acrylic pressure-sensitive adhesivee optical cement layer 104 and the silicone release layer 105 that transparent substrate layer 103, that a transparent PET makes comprises spherical PMMA diffusion particle 101.
| PET base material thick (μm) | Glue-line thick (μm) | Mist degree (%) | Light transmittance (%) |
| 100 | 25 | 98 | 75 |
Embodiment 3
As shown in Figure 2, a kind of backlight device comprises the transparent substrate layer 203 that a transparent PET is made, the one silicone based pressure sensitive adhesive optical cement layer 204 of diffusion coating 202, comprising spherical PMMA diffusion particle 201, it is optical waveguide layer 205 below optical cement layer, a reflective membrane 206, one group of side light source 207.
For using above-mentioned optics diffusion structure to be applied to side-light type back light embodiment, the release layer of embodiment 1 optics diffusion structure being removed, glue surface plaster is spread on optical waveguide layer 205 upper surface and obtain.
Embodiment 4
As shown in Figure 3, a kind of backlight device comprises diffusion coating 302, acrylic pressure-sensitive adhesivee optical cement layer 304, optical waveguide layer 305 that transparent substrate layer 303, that a transparent PET makes comprises spherical PMMA diffusion particle 301, a reflective membrane 206, one group of side light source 307.For using above-mentioned optics diffusion structure to be applied to side-light type back light embodiment, the release layer of embodiment 1 optics diffusion structure being removed, glue surface plaster is spread on optical waveguide layer 305 upper surface and obtain.
Embodiment 5
A kind of backlight device comprises the transparent substrate layer 403 that a transparent PET is made, the one silicone based pressure sensitive adhesive optical cement layer 404 of diffusion coating 402, comprising spherical PMMA diffusion particle 401, optical waveguide layer 405 below optical cement layer, reflective membrane 406, a group back side light source 407.For using above-mentioned optics diffusion structure to be applied to backlight type backlight device embodiments, the release layer of embodiment 1 optics diffusion structure being removed, glue surface plaster is spread on optical waveguide layer 405 upper surface and obtain.
In above-described embodiment, light source 207,307,407 can be at least one in cold-cathode fluorescence lamp, external electrode fluorescent lamp, light emitting diode and hot-cathode fluorescent lamp.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an optics diffusion structure, is characterized in that, comprises the transparent substrate layer that an optically transparent material is made, and described transparent substrate layer upper surface is provided with diffusion coating, and lower surface is provided with optical cement layer, and optical cement layer lower surface is provided with release layer.
2. optics diffusion structure according to claim 1, it is characterized in that, described transparent substrate layer is that the one of PET, PC and PS prepares.
3. optics diffusion structure according to claim 1, it is characterized in that, described diffusion particle is silicone resin, the one of PS and PMMA prepares, the diameter of described diffusion particle is 1 ~ 50um.
4. optics diffusion structure according to claim 1, it is characterized in that, described optical cement layer is that the one of pressure sensitive adhesive or structure glue prepares; Pressure sensitive adhesive is the one of silicone based, acrylic compounds, polyurethanes and rubber-like pressure sensitive adhesive, and structure glue is the one of silicone based, acrylic compounds, polyurethanes and rubber-like pressure sensitive adhesive.
5. optics diffusion structure according to claim 1, it is characterized in that, described release layer is silicone based release film, Organic fluoride class release film, film substrate, one without silicon release film, floride-free release film, and release film base material or film substrate are the one in PET, PC, PP, synthetic paper.
6. a backlight device, is characterized in that, comprises light source, reflectance coating, optical waveguide layer and frame, the top of described optical waveguide layer is provided with optical cement layer, optical cement layer upper surface is provided with transparent base, is provided with diffusion coating above transparent substrate layer, and diffusion coating inside is provided with diffusion particle.
7. backlight device according to claim 6, is characterized in that, is also provided with the one in auxiliary diffusion layer, prismatic brightness enhancing layer, filter layer or its combination above described diffusion coating.
8. backlight device according to claim 7, is characterized in that, described optical waveguide layer is the one in light guide plate, light guiding film.
9. backlight device according to claim 8, it is characterized in that, described light source is at least one in cold-cathode fluorescence lamp, external electrode fluorescent lamp, light emitting diode, hot-cathode fluorescent lamp and Organic Light Emitting Diode, described light source be arranged on light guide plate one or both sides or between light guide plate and reflectance coating.
Priority Applications (1)
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| CN201410764888.6A CN104570172A (en) | 2014-12-11 | 2014-12-11 | Optical diffusion structure and backlight source device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410764888.6A CN104570172A (en) | 2014-12-11 | 2014-12-11 | Optical diffusion structure and backlight source device |
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| CN104570172A true CN104570172A (en) | 2015-04-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932846A (en) * | 2017-05-08 | 2017-07-07 | 京东方科技集团股份有限公司 | A kind of optical brightening structure and preparation method thereof |
| CN108139512A (en) * | 2015-10-02 | 2018-06-08 | 迪睿合株式会社 | Diffuser plate, display device, projection arrangement and lighting device |
| CN108227299A (en) * | 2017-12-29 | 2018-06-29 | 宁波东辉光电科技有限公司 | A kind of downward back photo structure |
| CN108415117A (en) * | 2018-02-06 | 2018-08-17 | 珠海格力电器股份有限公司 | A kind of smooth conducting membranes, ultraviolet-sterilization device and equipment |
| WO2023120587A1 (en) * | 2021-12-24 | 2023-06-29 | 京セラ株式会社 | Microlens array, light-emitting device, and sensor module |
-
2014
- 2014-12-11 CN CN201410764888.6A patent/CN104570172A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108139512A (en) * | 2015-10-02 | 2018-06-08 | 迪睿合株式会社 | Diffuser plate, display device, projection arrangement and lighting device |
| US10859735B2 (en) | 2015-10-02 | 2020-12-08 | Dexerials Corporation | Diffuser plate, display device, projection device, and lighting device |
| CN108139512B (en) * | 2015-10-02 | 2021-10-08 | 迪睿合株式会社 | Diffusion plate, display device, projection device, and illumination device |
| CN106932846A (en) * | 2017-05-08 | 2017-07-07 | 京东方科技集团股份有限公司 | A kind of optical brightening structure and preparation method thereof |
| CN106932846B (en) * | 2017-05-08 | 2019-11-05 | 京东方科技集团股份有限公司 | A kind of optical brightening structure and preparation method thereof |
| US11256007B2 (en) | 2017-05-08 | 2022-02-22 | Boe Technology Group Co., Ltd. | Optical brightening structure, preparation method therefor, and electronic device |
| CN108227299A (en) * | 2017-12-29 | 2018-06-29 | 宁波东辉光电科技有限公司 | A kind of downward back photo structure |
| CN108415117A (en) * | 2018-02-06 | 2018-08-17 | 珠海格力电器股份有限公司 | A kind of smooth conducting membranes, ultraviolet-sterilization device and equipment |
| WO2023120587A1 (en) * | 2021-12-24 | 2023-06-29 | 京セラ株式会社 | Microlens array, light-emitting device, and sensor module |
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