CN102508331B - A kind of backlight module light guide module and manufacturing equipment thereof and preparation method - Google Patents
A kind of backlight module light guide module and manufacturing equipment thereof and preparation method Download PDFInfo
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- CN102508331B CN102508331B CN201110353953.2A CN201110353953A CN102508331B CN 102508331 B CN102508331 B CN 102508331B CN 201110353953 A CN201110353953 A CN 201110353953A CN 102508331 B CN102508331 B CN 102508331B
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Abstract
The present invention relates to a kind of manufacturing equipment of backlight module light guide module, be arranged in order in the vertical direction by 3 hot-pressing rollers, adjacent two hot-pressing roller opposite direction rotatings, there are zigzag or wavy microstructure in intermediate heat pressure roller (2) surface, other two hot-pressing rollers (1,2) smooth surfaces, there are light guide plate extrusion die (4), diffusion barrier unreeling structure (5) and optical clear film unreeling structure (6) in hot-pressing roller group side.The invention still further relates to the manufacture method of backlight module light guide module and the light guide module of the method production.The laminating of the light guide module using this Apparatus and method for prepare each rete closely, high, the thickness of light utilization with cost effectively reduces, each thicknesses of layers even, light that is even, high brightness can be formed.
Description
Technical field
The present invention relates to a kind of backlight module light guide module and manufacturing equipment thereof and preparation method.
Background technology
Panel of LCD (LCD) is because its thickness is thin, quality is light and advantage that is easy to carry, Low emissivity has now been widely used in the electronic product of the tool growth potentiality such as monitor, notebook computer, digital camera and projector.Backlight module is one of key part and component of LCD, and function is well-off brightness and the light source be evenly distributed, and makes the normal show image of LCD energy.
Backlight module forms primarily of assembling components such as light source, lampshade, reflecting plate, light guide plate, diffusion sheet, prismatic lens and postings, the light that light source sends through line source being scattered in uniform area source after light guide plate, then is formed evenly through the equal light action of diffusion sheet and the light harvesting effect of prismatic lens, the light of high brightness.
Light guide plate in existing backlight module, diffusion sheet, prismatic lens are formed separately rear closed assembly composition mostly, and surrounding is encapsulated fixing (see accompanying drawing 1) by posting.Because rete laminating is not tight, have air layer between adjacent film layers, light has 4 interfaces between light guide plate, air, diffusion sheet, air, prismatic lens, all will reflect, reflect, and causes light transmission to lose larger; Simultaneously not tight owing to fitting between rete, module whole thickness cannot reduce, and can not meet the current requirement ultra-thin to liquid crystal display; And in order to the laminating degree of strengthening membrane interlayer, need the flatness improving each rete, improve rete price, effectively can not reduce the cost of whole backlight module.
CN200410082569 discloses a kind of preparation method of light guide plate module: the material getting out optical waveguide layer, diffusion layer, layers of prisms, is respectively charged in different hoppers; After the material got ready is distinguished heating and melting with extruder, feeding co-extrusion pressure die head is extruded, obtains three layers of one hot melt sheet stock; Prismatic line is extruded by prism rag.The method requires that all material must have certain compatibility; Each layer distribution is because temperature is different, flow velocity is different, the different flow condition that causes of viscosity is inconsistent simultaneously, thickness distribution differentiation, cannot the thickness of each rete of equal control, thickness unevenness causes being formed evenly, the light of high brightness, cannot meet the optical requirement of backlight module.
Summary of the invention
The present invention to solve the laminating of existing backlight module light guide module rete not closely, low, the thickness of light utilization and cost be difficult to the technical matters that reduces, each thicknesses of layers is uneven.The invention provides a kind of backlight module light guide module and manufacturing equipment thereof and preparation method for this reason, use this Apparatus and method for energy integration system for light guide module, and obtained light guide module each rete laminating closely, high, the thickness of light utilization with cost effectively reduces, each thicknesses of layers even, light that is even, high brightness can be formed.
The invention provides a kind of backlight module light guide module, be made up of light guide plate, Diffusion barrier layer, optical lens rete, be characterised in that trilamellar membrane laminating closely, there is not air layer, light guide plate being covered every layer film thickness uniformity coefficient can within 50 micron.Uniformity coefficient refers to the difference of rete thickness and thinnest part thickness herein.
The present invention also provides a kind of manufacturing equipment of backlight module light guide module, be arranged in order in the vertical direction by 3 hot-pressing rollers, adjacent two hot-pressing roller opposite direction rotatings, there are zigzag or the microstructure such as wavy in intermediate heat pressure roller (2) surface, other two hot-pressing rollers (1,3) smooth surfaces, there are light guide plate extrusion die (4), diffusion layer unreeling structure (5) and optical clear film unreeling structure (6) in hot-pressing roller group side.
As preferably, have heating arrangement (7) near the optical clear film that optical clear film unreeling structure (6) is carried and hot-pressing roller (2) contact point, optical clear film is heated to viscoelastic state and fits tightly with microstructure hot-pressing roller (2) by heating arrangement (7).
Present invention also offers a kind of preparation method of backlight module light guide module: light guide plate is extruded from extrusion die (4), be delivered to hot-pressing roller (1) and hot-pressing roller (2) tangent line place, preformed diffusion barrier is delivered to the position near light guide plate by diffusion layer unreeling structure (5), preformed optical clear film is delivered near diffusion layer opposite side by optical clear film unreeling structure (6), optical clear film is squeezed out the optical lens film of zigzag or wavy micro-structure surface by having the hot-pressing roller of microstructure (2), light guide plate, diffusion barrier, optical lens film is by hot-pressing roller (1, 2) light guide module (8) be combined into one, light guide module (8) continues on to hot-pressing roller (3) and hot-pressing roller (2) tangent line place, carry out second time compound to get product backlight module light guide module.
Because light guide plate, diffusion barrier, optical clear film are all preformed before compound, thus effectively can control thickness and the uniformity coefficient of each layer, form light that is even, high brightness.
As preferably, heating arrangement (7) is had near the optical clear film that optical clear film unreeling structure (6) is carried and hot-pressing roller (2) contact point, optical clear film is heated to viscoelastic state and fits tightly with microstructure hot-pressing roller (2), be conducive under the extruding of hot-pressing roller (2) optical clear film formed zigzag or wavy microstructure optical lens film, make Microstructure Optics lens coating play light harvesting effect better.
As preferably, the temperature of heating arrangement (7) is 100-200 DEG C.Temperature too high or too low optical hyaline membrane all not easily maintain viscoelastic state, but not viscoelastic state is unfavorable for the combination of optical clear rete and diffusion layer, is also unfavorable for the compressing of optical clear film surface microstructure.
Light guide module integrated molding prepared by the inventive method, the laminating of each rete closely, high, the thickness of light utilization with cost effectively reduces, each thicknesses of layers even, light that is even, high brightness can be formed.
Accompanying drawing explanation
The partial component exploded view of the existing backlight module of Fig. 1
In Fig. 1: 1, light guide plate, 2, diffusion sheet, 3, prismatic lens, 4, posting.
The manufacturing equipment schematic diagram of Fig. 2 backlight module light guide module of the present invention
In Fig. 2: 2, there is the hot-pressing roller of zigzag or wavy microstructure on surface, 1,3, ganoid hot-pressing roller, 4, light guide plate extrusion die, 5, diffusion layer unreeling structure, 6, optical clear film unreeling structure, 7, heating arrangement, 8, light guide module.
Embodiment
The manufacturing equipment of embodiment 1 backlight module light guide module of the present invention
Be arranged in order in the vertical direction by 3 hot-pressing rollers, adjacent two hot-pressing roller opposite direction rotatings, there are zigzag or wavy microstructure in intermediate heat pressure roller (2) surface, other two hot-pressing rollers (1,3) smooth surfaces, there are light guide plate extrusion die (4), diffusion layer unreeling structure (5) and optical clear film unreeling structure (6) in hot-pressing roller group side.There is heating arrangement (7) near the optical clear film that optical clear film unreeling structure (6) is carried and hot-pressing roller (2) contact point, optical clear film is heated to viscoelastic state and fits tightly with microstructure hot-pressing roller (2).
The preparation method of embodiment 2 light guide module
Light guide plate is extruded from extrusion die (4), be delivered to hot-pressing roller (1) and hot-pressing roller (2) tangent line place, preformed diffusion barrier is delivered to the position near light guide plate by diffusion layer unreeling structure (5), preformed optical clear film is delivered near diffusion layer opposite side by optical clear film unreeling structure (6), optical clear film is squeezed out the optical lens film of zigzag or wavy micro-structure surface by having the hot-pressing roller of microstructure (2), light guide plate, diffusion barrier, optical lens film is by hot-pressing roller (1, 2) light guide module (8) be combined into one, light guide module (8) continues on to hot-pressing roller (3) and hot-pressing roller (2) tangent line place, carry out second time compound to get product backlight module light guide module.
Because light guide plate, diffusion barrier, optical lens film are all preformed before compound, thus effectively can control thickness and the uniformity coefficient of each layer, form light that is even, high brightness.
Near optical clear film and hot-pressing roller (2) contact point, heating arrangement (7) can also be housed, transparent optical film be heated to viscoelastic state and fit tightly with microstructure hot-pressing roller (2), be conducive to transparent optical film under the extruding of hot-pressing roller (2) and form the optical lens film of zigzag or wavy microstructure, make Microstructure Optics lens coating play light harvesting effect better.The temperature of heating arrangement (7) is 100-200 DEG C, and in this temperature range, optical clear film can maintain viscoelastic state, is conducive to the combination of optical clear rete and diffusion layer and the compressing of optical clear film surface microstructure.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (3)
1. the preparation method of a backlight module light guide module, comprise the steps: that light guide plate is extruded from extrusion die (4), be delivered to the first hot-pressing roller (1) and the second hot-pressing roller (2) tangent line place, preformed diffusion barrier is delivered to the position near light guide plate by diffusion layer unreeling structure (5), preformed optical clear film is delivered near diffusion barrier opposite side by optical clear film unreeling structure (6), optical clear film is squeezed into the optical lens film of zigzag or wavy micro-structure surface by second hot-pressing roller (2) with microstructure, light guide plate, diffusion barrier, optical lens film is by the first hot-pressing roller (1), the light guide module (8) that second hot-pressing roller (2) is combined into one, light guide module (8) continues on to the 3rd hot-pressing roller (3) and the second hot-pressing roller (2) tangent line place, carry out second time compound to get product backlight module light guide module.
2. the preparation method of light guide module according to claim 1, be characterised in that, near optical clear film and the second hot-pressing roller (2) contact point, heating arrangement (7) be housed, optical clear film is heated to viscoelastic state and fits tightly with the second hot-pressing roller (2).
3. the preparation method of light guide module according to claim 1, is characterised in that the heating-up temperature of heating arrangement (7) is 100-200 DEG C.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353953.2A CN102508331B (en) | 2011-11-10 | 2011-11-10 | A kind of backlight module light guide module and manufacturing equipment thereof and preparation method |
| CN201410621471.4A CN104317102B (en) | 2011-11-10 | 2011-11-10 | Light guide module for backlight module and manufacturing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353953.2A CN102508331B (en) | 2011-11-10 | 2011-11-10 | A kind of backlight module light guide module and manufacturing equipment thereof and preparation method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410621471.4A Division CN104317102B (en) | 2011-11-10 | 2011-11-10 | Light guide module for backlight module and manufacturing device thereof |
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| Publication Number | Publication Date |
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| CN102508331A CN102508331A (en) | 2012-06-20 |
| CN102508331B true CN102508331B (en) | 2015-09-09 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752809A (en) * | 2004-09-21 | 2006-03-29 | 庄新烈 | Light guide plate module and its making method |
| CN101180172A (en) * | 2005-03-16 | 2008-05-14 | 富士胶片株式会社 | Method for producing resin sheet |
| CN101303431A (en) * | 2008-04-15 | 2008-11-12 | 京东方科技集团股份有限公司 | Light guide plate and method for manufacturing light guide plate |
| CN202502262U (en) * | 2011-11-10 | 2012-10-24 | 常州丰盛光电科技股份有限公司 | Light guide module for backlight module and manufacturing equipment thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100485429C (en) * | 2007-04-25 | 2009-05-06 | 长兴光学材料（苏州）有限公司 | Thin type flexible light-guiding component |
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2011
- 2011-11-10 CN CN201110353953.2A patent/CN102508331B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752809A (en) * | 2004-09-21 | 2006-03-29 | 庄新烈 | Light guide plate module and its making method |
| CN101180172A (en) * | 2005-03-16 | 2008-05-14 | 富士胶片株式会社 | Method for producing resin sheet |
| CN101303431A (en) * | 2008-04-15 | 2008-11-12 | 京东方科技集团股份有限公司 | Light guide plate and method for manufacturing light guide plate |
| CN202502262U (en) * | 2011-11-10 | 2012-10-24 | 常州丰盛光电科技股份有限公司 | Light guide module for backlight module and manufacturing equipment thereof |
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| CN102508331A (en) | 2012-06-20 |
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