CN102079119A - Method for manufacturing large-area light guide plate - Google Patents
Method for manufacturing large-area light guide plate Download PDFInfo
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- CN102079119A CN102079119A CN2009101942019A CN200910194201A CN102079119A CN 102079119 A CN102079119 A CN 102079119A CN 2009101942019 A CN2009101942019 A CN 2009101942019A CN 200910194201 A CN200910194201 A CN 200910194201A CN 102079119 A CN102079119 A CN 102079119A
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Abstract
The invention discloses a method for manufacturing a large-area light guide plate (LGP), which is characterized by comprising the following steps: preparing a hot-melting transparent acrylic ester membrane based on butyl acrylate, acrylonitrile, N, N- methylene-bisacrylamide, methacrylate tin salt or methacrylate barium salt and methyl methacrylate; designing a hot-pressing module, wherein the inner chamber of the hot-pressing module is provided with patterns required by light guide; placing the hot-melting transparent acrylic ester membrane into the inner chamber of the hot-pressing module; putting an optical transparent acrylate sheet on the membrane; vacuumizing, heating and pressurizing to mould the hot-melting transparent acrylic ester membrane and adhering to a polymethyl methacrylate (PMMA) acrylate sheet; and finally demoulding to obtain the LGP finished product. The LGP obtained by the manufacturing method has even shape and excellent optical homogeneity; and the manufacturing method can be used to manufacture the large-area LGPs.
Description
Technical field
The invention relates to a kind of LGP and manufacture method thereof
Background technology
Advantages such as the liquid crystal display utensil is light, thin, power consumption is little, it is widely used in fields such as computer, TV, mobile phone.The LCD design has backlight module, its function to be to provide the illumination that brightness is abundant and be evenly distributed to panel of LCD.LGP is the important optical module of backlight module, and it and other optical modules such as light source, reflecting plate, diffuser plate and prism plate constitute the LCD light supply apparatus jointly.LGP is through optical design, utilize site or groove on the LGP to cooperate the shooting angle of controlling light with prismatic lens, the light that pilot point light source or line source send penetrates from exiting surface, and guarantee the uniformity of panel luminosity and its luminosity, make from the brightness and the colourity of the light of LGP outgoing all to reach certain requirement.
At present, manufacturing method of light conducting board mainly contains printing-type and non-printing-type.
Mode of printing is light to be had the material such as the SiO of high reflection
2And TiO
2As printing material, suitably be distributed in the bottom surface of LGP in the mode of printing, by the characteristic of printing material, light is sent by the face of facing, and be dispersed in the luminous zone equably.Light must see through LGP ability contact patterns in this kind LGP, thereby the intensity of reflection ray is weakened; In addition, in printing process since printing-ink apply to be difficult for evenly, thereby influence the dispersion effect of light, influence the effect of liquid crystal display.
Non-printing-type method for manufacturing light guide plate is to form LGP by transparent resin ejection formations such as PMMA, PC, a plurality of convex-concave patterns is set to reach the purpose of diffusion light in the bottom surface of LGP with cutting or direct injection mode.The method that existing ejection forming technique is made LGP generally comprises: designing mould; The resin material that fusion is predetermined; The resin material of fusion is injected the die cavity of mould; This mould is cooled off in pressurize; The demoulding promptly forms the LGP finished product.Non-printing-type method for manufacturing light guide plate has advantages such as precision is good, stay in grade, is the manufacture method of present small-medium size LGP main flow.Along with the appearance of LCD TV, the demand of large-size light-conducting plate and module backlight is increased day by day, and when making LGP, then have the quality and the homogeneity question of ejection formation product with traditional device for injection moulding.
Summary of the invention
For overcoming the quality and the homogeneity question of large tracts of land LGP ejection formation product, the invention provides a kind of large-size light-conducting plate manufacture method that is applicable to.It may further comprise the steps:
1, synthetic hot melt transparent acrylate film
With butyl acrylate (10～20% mass fraction); acrylonitrile (5～20% mass fraction); N; N-methylene-bisacrylamide (8～20% mass fraction); methacrylic acid pink salt or methacrylic acid barium salt (0.005～0.01% mass fraction) and methyl methacrylate (60～70% mass fraction) mix; drip initator benzoyl peroxide or cumyl peroxide (0.001～0.05% mass fraction) and be heated to 80 ℃-90 ℃; control reaction temperature well; reaction monomers and initator addition; insulation 1h after reaction is finished; vacuum is sloughed little molecule, makes hot melt transparent acrylate film on sol evenning machine.
2, design one hot pressing module, this module inner chamber design has the pattern of leaded light demand.This module is a cover half, and design has heating and attemperating unit.The fine pattern of LGP is and the fine pattern complementary formations of die that when the fine pattern of this die is semicircle spherical protuberances, half pyramid projection, the fine pattern of this LGP will correspond to semi-round ball connected in star, half pyramid groove.Design a refrigerating module, this module is a dynamic model, and design has cooling and attemperating unit.
3, hot melt transparent acrylate film is put in the cover half chamber, placed the optical clear acrylic board on it, vacuumize, heating, dynamic model pressurization make the film moulding of hot melt transparent acrylate and attached on the acrylic board, the demoulding forms LGP.
The advantage of manufacturing method of light conducting board of the present invention is:
1, takes hot melt transparent acrylate film is placed in the mould cavity that designs, shorten the processing procedure time and save cost, the mfg. moulding die of LGP of the present invention comprises a cover half and a dynamic model, this cover half is provided with heater, dynamic model is provided with cooling device, hot pressing hot melt transparent acrylate film moulding and attached on the PMMA sheet material, cooling film piece cooling base material acrylic board, guarantee to cool off finished product, the demoulding is smooth.The LGP finished form that adopts this manufacture method to make is even, and optical homogeneity is good, can realize the manufacturing of large tracts of land LGP.
2, butyl acrylate and metering system acid metal salt can be regulated the synthetic resin vitrification point, and through the LGP intensity height that hot pressing is compounded to form, stress and deflection are little.
The specific embodiment
Embodiment one:
1, synthetic hot melt transparent acrylate film
With butyl acrylate (15% mass fraction), acrylonitrile (5% mass fraction), N, N-methylene-bisacrylamide (10% mass fraction), methacrylic acid pink salt (0.01% mass fraction) and methyl methacrylate (70% mass fraction) mix, drip initator cumyl peroxide (0.01% mass fraction) and be heated to 80 ℃-90 ℃, control reaction temperature, reaction monomers and initator addition well, insulation 1h after reaction is finished, vacuum is sloughed little molecule, makes hot melt transparent acrylate film on sol evenning machine.
2, hot melt transparent acrylate film is put in the cover half chamber, placed the optical clear acrylic board on it, vacuumize, heating, dynamic model pressurization make the film moulding of hot melt transparent acrylate and attached on the acrylic board, the demoulding forms LGP.
Embodiment two:
1, synthetic hot melt transparent acrylate film
With butyl acrylate (20% mass fraction), acrylonitrile (8% mass fraction), N; N-methylene-bisacrylamide (10% mass fraction), methacrylic acid barium salt (0.01% mass fraction) and methyl methacrylate (62% mass fraction) mix; drip initator benzoyl peroxide or cumyl peroxide (0.001～0.05% mass fraction) and be heated to 80 ℃-90 ℃; control reaction temperature, reaction monomers and initator addition well; insulation 1h after reaction is finished; vacuum is sloughed little molecule, makes hot melt transparent acrylate film on sol evenning machine.
2, hot melt transparent acrylate film is put in the cover half chamber, placed the optical clear acrylic board on it, vacuumize, heating, dynamic model pressurization make the film moulding of hot melt transparent acrylate and attached on the acrylic board, the demoulding forms LGP.
Claims (6)
1. manufacturing method of light conducting board, it is characterized in that it comprises the steps: based on butyl acrylate, acrylonitrile, N, N-methylene-bisacrylamide, methacrylic acid pink salt or methacrylic acid barium salt and methyl methacrylate prepare hot melt transparent acrylate film.Design a hot pressing module, this module inner chamber design has the pattern of leaded light demand, hot melt transparent acrylate film is put in the die cavity, place the optical clear acrylic board on it, vacuumize, heating, pressurization make the film moulding of hot melt transparent acrylate and attached on the PMMA acrylic board, the demoulding forms the LGP finished product.
2. manufacturing method of light conducting board as claimed in claim 1; it is characterized in that: with butyl acrylate (10～20% mass fraction); acrylonitrile (5～20% mass fraction); N; N-methylene-bisacrylamide (8～20% mass fraction); methacrylic acid pink salt or methacrylic acid barium salt (0.005～0.01% mass fraction) and methyl methacrylate (60～70% mass fraction) mix; drip initator benzoyl peroxide or cumyl peroxide (0.001～0.05% mass fraction) and be heated to 80 ℃～90 ℃; control reaction temperature well; reaction monomers and initator addition; insulation 1h after reaction is finished; vacuum is sloughed little molecule, makes hot melt transparent acrylate film on sol evenning machine.
3. manufacturing method of light conducting board as claimed in claim 1 is characterized in that this die cavity inner surface is provided with spill, U-shaped, V-arrangement, convex pattern.
4. LGP as claimed in claim 1, the shape that it is characterized in that the optical clear acrylic board are plate shaped or the wedge shape transparency carrier.
5. method for manufacturing light guide plate according to claim 1 is characterized in that: hot melt transparent acrylate film carries out hot briquetting by heating module (cover half), and is compounded on the optical clear acrylic base material.
6. method for manufacturing light guide plate according to claim 1 is characterized in that: the side at the optical clear acrylic board is provided with refrigerating module (dynamic model), and light guide base material is cooled off, and guarantees that the demoulding is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101942019A CN102079119A (en) | 2009-11-27 | 2009-11-27 | Method for manufacturing large-area light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101942019A CN102079119A (en) | 2009-11-27 | 2009-11-27 | Method for manufacturing large-area light guide plate |
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| CN102079119A true CN102079119A (en) | 2011-06-01 |
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| CN2009101942019A Pending CN102079119A (en) | 2009-11-27 | 2009-11-27 | Method for manufacturing large-area light guide plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696524A (en) * | 2021-08-11 | 2021-11-26 | 苏州易锐光电科技有限公司 | Micro-nano processing method of optical device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1485191A (en) * | 2002-08-22 | 2004-03-31 | 三荣技研股份有限公司 | Pressure device |
| WO2004092789A1 (en) * | 2003-04-15 | 2004-10-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and mould for producing transparent optical elements consisting of polymer materials |
| EP1514854A1 (en) * | 2003-07-29 | 2005-03-16 | LG Chem. Ltd. | Artificial marble comprising waste acrylic materials and preparation thereof |
| CN101398507A (en) * | 2007-09-29 | 2009-04-01 | 光宝科技股份有限公司 | Light conducting plate for forming laser processing pattern on light incidence plane and method for producing the same |
-
2009
- 2009-11-27 CN CN2009101942019A patent/CN102079119A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1485191A (en) * | 2002-08-22 | 2004-03-31 | 三荣技研股份有限公司 | Pressure device |
| WO2004092789A1 (en) * | 2003-04-15 | 2004-10-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and mould for producing transparent optical elements consisting of polymer materials |
| EP1514854A1 (en) * | 2003-07-29 | 2005-03-16 | LG Chem. Ltd. | Artificial marble comprising waste acrylic materials and preparation thereof |
| CN101398507A (en) * | 2007-09-29 | 2009-04-01 | 光宝科技股份有限公司 | Light conducting plate for forming laser processing pattern on light incidence plane and method for producing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696524A (en) * | 2021-08-11 | 2021-11-26 | 苏州易锐光电科技有限公司 | Micro-nano processing method of optical device |
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Application publication date: 20110601 |