CN101554761A - Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system - Google Patents
Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system Download PDFInfo
- Publication number
- CN101554761A CN101554761A CNA2008100666110A CN200810066611A CN101554761A CN 101554761 A CN101554761 A CN 101554761A CN A2008100666110 A CNA2008100666110 A CN A2008100666110A CN 200810066611 A CN200810066611 A CN 200810066611A CN 101554761 A CN101554761 A CN 101554761A
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- die
- metal die
- light guide
- guide plate
- liquid crystal
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 11
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 238000000465 moulding Methods 0.000 title claims description 11
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 13
- 229920005668 polycarbonate resin Polymers 0.000 claims description 8
- 239000004431 polycarbonate resin Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 20
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000004419 Panlite Substances 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 5
- 238000005530 etching Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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Abstract
The invention discloses a processing method of a light guide plate of a hot-press forming liquid crystal display backlight die set illuminating system, which comprises the following steps: (1) installing pattern base plates on one surface or two surfaces of forming die cavities of an upper die and a lower die of a metal die; (2) installing the metal die on a mechanical device with heat source supply and controlling the temperature of the metal die below 85 DEG C; (3) placing a panlite plate into an inner cavity of the metal die, closing the metal die by pressure less than 25MPa/cm<2>, raising the temperature of the metal die to 85-200 DEG C and increasing the pressure of a lock die to more than 5MPa/cm<2>, keeping the pressure within 10 seconds then cooling and solidifying the metal die, and opening the die and taking the light guide plate out when the temperature of the metal die is less than 85 DEG C. Compared with the prior art, the invention not only has the production technology of a narrowing method and a spreading net-point method, but also has the advantages of low equipment cost, simple technology, high product luminousness, good brightness uniformity, short development period, and the like.
Description
Technical field:
The present invention relates to a kind of processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system.
Background technology:
The liquid crystal material of no self-luminous character such as polycarbonate resin (PC), owing to have good light transmittance, marresistance, be easy to characteristics such as moulding, therefore be widely used in the manufactured materials of LGP in the color monitor modules backlight such as computer screen, mobile phone, PDA.The groundwork principle of LGP is the light that the CCFL (CCFL) that will be installed in the LGP side or the back side or light-emittingdiode (LED) are sent, enter LGP from the side or the back side of LGP, and change the direction that light advances by the reflection unit and the optical scattering structure of LGP reflecting surface, be about to spot light or line source and be transformed into area source.
For reaching high brightness and even brightness requirement, especially important that the optical design of LGP just shows led whole sight line place in one's power with the light that will concentrate on the edge by optical design equably by LGP.
At present LGP produces that the main mode of optical texture is one, stricturization method (wedge structure); Two, micro-structural method promptly adds the micro-structural (miniature technology) of some sawtooth (V-CUT technology) or semicircle in the LGP upper and lower surface.In stricturization and micro-structural method, generally be to use the mode of ejection formation to make; Three, a diffusion point method, this is the site that general LGP uses, the making of site generally be utilize the screen painting mode print or the mould etching after carry out injection molding method and make, these diffusions are by high reflectance and not absorb the pigment of light made.Generally speaking, diffusion point is distributed in the LGP lower edge unevenly, and is thin near the diffusion point distribution density of light source LGP and the site is less, closeer and the site is bigger away from the diffusion point distribution of light source LGP.
Three kinds of methods commonly used have the following disadvantages in the above-mentioned LGP design:
Stricturization method (wedges method): it is good that power is appeared on maximum surface, can effective sharp total reflection principle, and shortcoming is lightening restricted for product, is applicable to the backlight product of large-size; Manufacturing and processing equipment required precision height, the cost of equipment costliness.
The diffusion net-point method: printing-type is applicable to the large-size product, and process rate is not high, uses chemical printing ink, does not meet environmental requirement; The mould chemical method for etching is applicable to reduced size, and because of etched surfaces fineness reason, light losing is bigger, can not make full use of light, and mould and production and processing injection molding apparatus expense are higher.
Add the micro-structural method: LGP top and bottom sawtooth micro-structural (V-CUT technology), it is best that power is appeared on the surface, but the performance of briliancy uniformity is poor, needs to cooperate special-purpose prismatic lens to use.
Summary of the invention:
The object of the present invention is to provide a kind of processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system, this method can effectively solve stricturization method, diffusion net-point method, adds the defective of micro-structural method existence and keep its advantage.
For achieving the above object, the present invention mainly adopts following technical scheme:
A kind of processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system comprises step:
(1) at the shaping mold cavity one or both sides of metal die upper and lower mould pattern substrate is installed;
(2) metal die is installed on the mechanical device with thermal source supply, and the temperature of metal die is controlled at below 85 ℃;
(3) polycarbonate resin plate is put into the metal die inner chamber, used less than 25MPa/cm
2Pressure with the mould closure, during heating of metal mold temperature to 85～200 ℃, improve locked mode pressure 5MPa/cm
2More than, keep-uping pressure 10 seconds in, cooling is solidified, and after the mould temperature was less than 85 ℃, LGP was taken out in die sinking.
Described pattern substrate is provided with the stereoptics structure.
Compared with prior art, the present invention not only has the advantage of the production technology of stricturization method and diffusion net-point method concurrently, drops into characteristics such as expense is low, technology simple, product light transmittance height, briliancy good uniformity, construction cycle weak point but also have equipment.
Description of drawings:
Fig. 1 is hot press molding liquid crystal display of the present invention module light guide plate processing backlight schematic diagram.
Identifier declaration among the figure: mechanical device upper table 1, metal die patrix 2, pattern substrate 3, die cavity or polycarbonate resin plate 4, pattern substrate 5, metal die counterdie 6, mechanical device lower table 7.
The specific embodiment:
For setting forth thought of the present invention and purpose, the present invention is described in further details below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, metal die patrix 2 is fixedly mounted on the mechanical device upper table 1, metal die counterdie 6 is fixedly mounted on the mechanical device lower table 7, be installed with pattern substrate 3 in the shaping mold cavity of described metal die patrix 2, be installed with pattern substrate 5 in the shaping mold cavity of metal die counterdie 6 or be set with polycarbonate resin plate 4 at metal die counterdie 6, pattern substrate 3 and pattern substrate 5 are provided with the stereoptics structure here.
The present invention can realize in the following way: at first be blowing, install in the shaping mold cavity one or both sides of metal die upper and lower mould exactly and put into pattern substrate or one side and pattern substrate is installed polycarbonate resin plate simultaneously is installed; This pattern substrate is provided with the needed optical texture three-dimensional shape of moulding; Be exactly that the metal die upper and lower mould is installed on the mechanical device with thermal source supply then, and the metal die upper and lower mould is carried out matched moulds, metal die patrix and counterdie are lumped together.Then the mechanical device by the thermal source supply is controlled at the temperature of metal die below 85 ℃.
Then polycarbonate resin plate is put into the metal die inner chamber, used less than 25MPa/cm
2Pressure with the mould closure, during heating of metal mold temperature to 85～200 ℃, improve locked mode pressure 5MPa/cm
2More than, keep-uping pressure 10 seconds in, cooling is then solidified, and after the metal die temperature was less than 85 ℃, LGP was taken out in die sinking.
Mechanical device is pneumatic press, oil pressure forcing press or mechanical press among the present invention, and heating process can be passed through electrothermal tube, electric hot plate or electric heating heating high temperature oil and realize.
More than the processing method of a kind of light guide plate of hot press molding liquid crystal display backlight module illuminating system provided by the present invention is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (2)
1, a kind of processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system is characterized in that comprising step:
(1) at the shaping mold cavity one or both sides of metal die upper and lower mould pattern substrate is installed;
(2) metal die is installed on the mechanical device with thermal source supply, and the temperature of metal die is controlled at below 85 ℃;
(3) polycarbonate resin plate is put into the metal die inner chamber, used less than 25MPa/cm
2Pressure with the mould closure, during heating of metal mold temperature to 85～200 ℃, improve locked mode pressure 5MPa/cm
2More than, keep-uping pressure 10 seconds in, cooling is solidified, and after the mould temperature was less than 85 ℃, LGP was taken out in die sinking.
2, the processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system according to claim 1 is characterized in that: described pattern substrate is provided with the stereoptics structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810066611 CN101554761B (en) | 2008-04-09 | 2008-04-09 | Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810066611 CN101554761B (en) | 2008-04-09 | 2008-04-09 | Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101554761A true CN101554761A (en) | 2009-10-14 |
| CN101554761B CN101554761B (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810066611 Expired - Fee Related CN101554761B (en) | 2008-04-09 | 2008-04-09 | Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101554761B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522475A (en) * | 2013-10-22 | 2014-01-22 | 苏州安洁科技股份有限公司 | Method for precise three-dimensional hot-press forming |
| CN105299567A (en) * | 2015-12-02 | 2016-02-03 | 上海航空电器有限公司 | Conformal method of curved surfaces of aircraft formation lights |
| CN106764785A (en) * | 2016-11-25 | 2017-05-31 | 上海航空电器有限公司 | A kind of straight emitting led formation light |
| WO2020177785A3 (en) * | 2020-04-15 | 2021-03-04 | 南京贝迪电子有限公司 | Device for light guide film product procesing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100468150C (en) * | 2003-11-29 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | Method of making light guiding plate |
| CN100469559C (en) * | 2006-11-21 | 2009-03-18 | 诸先桥 | Automobile brake liquid tank production process |
-
2008
- 2008-04-09 CN CN 200810066611 patent/CN101554761B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522475A (en) * | 2013-10-22 | 2014-01-22 | 苏州安洁科技股份有限公司 | Method for precise three-dimensional hot-press forming |
| CN103522475B (en) * | 2013-10-22 | 2016-04-13 | 苏州安洁科技股份有限公司 | A kind of method that precision three-dimensional is hot-forming |
| CN105299567A (en) * | 2015-12-02 | 2016-02-03 | 上海航空电器有限公司 | Conformal method of curved surfaces of aircraft formation lights |
| CN105299567B (en) * | 2015-12-02 | 2019-12-10 | 上海航空电器有限公司 | curved surface conformal method for airplane formation lamp |
| CN106764785A (en) * | 2016-11-25 | 2017-05-31 | 上海航空电器有限公司 | A kind of straight emitting led formation light |
| WO2020177785A3 (en) * | 2020-04-15 | 2021-03-04 | 南京贝迪电子有限公司 | Device for light guide film product procesing |
| US20210213694A1 (en) * | 2020-04-15 | 2021-07-15 | Nanjing Bready Electronics Co., Ltd. | Light guide film product processing apparatus |
| US11806957B2 (en) * | 2020-04-15 | 2023-11-07 | Nanjing Bready Electronics Co., Ltd. | Light guide film product processing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101554761B (en) | 2011-06-08 |
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Inventor after: Li Jianping Inventor after: Yang Xiuqing Inventor before: Li Jianping Inventor before: Li Xiuqing |
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Application publication date: 20091014 Assignee: SHENZHEN GOYM PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Assignor: SHENZHEN TECHASER TECHNOLOGIES Co.,Ltd. Contract record no.: 2015440020276 Denomination of invention: Processing method of light guide plate of hot press molding liquid crystal display backlight module illuminating system Granted publication date: 20110608 License type: Exclusive License Record date: 20150727 |
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