CN1560680A - Diffusion plate for backlight assembly of liquid crystal TV. and production method - Google Patents
Diffusion plate for backlight assembly of liquid crystal TV. and production method Download PDFInfo
- Publication number
- CN1560680A CN1560680A CNA2004100142916A CN200410014291A CN1560680A CN 1560680 A CN1560680 A CN 1560680A CN A2004100142916 A CNA2004100142916 A CN A2004100142916A CN 200410014291 A CN200410014291 A CN 200410014291A CN 1560680 A CN1560680 A CN 1560680A
- Authority
- CN
- China
- Prior art keywords
- layer
- side layer
- diffuser plate
- opposite side
- lcd
- 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.)
- Pending
Links
Abstract
The invention discloses a dispersing board and the manufacturing method applied to liquid crystal television back light assembly. The dispersing board is formed by squeezing and combining a base board, tow side layers, ant the base board layer is a cross blend layer using transparent methyl crylic acid methyl ester polymer or its copolymer as base materials and the light dispersant; the two layers are the cross blend layers using poly methyl crylic acid methyl ester or polycarbonate as the base materials. The producing method for the dispersing board: uses the plastic squeezer as the main producing device, stocking; heating and plasticizing; squeezing; post arranging. The light atomization rate and brightness of the dispersing board are excellent, the size is stable, and the lifespan is long.
Description
Technical field
The present invention relates to diffuser plate and production method thereof, what be specifically related to is a kind of diffuser plate and production method thereof that is used for the LCD TV backlight module.
Background technology
For LCD TV provides the module backlight of light source, mainly comprise light source cold cathode fluorescent lamp, diffuser plate and blooming.The effect of diffuser plate mainly is that line source is atomized into area source, with distribution of light evenly and guide the scattering of light direction, increases brightness.The industrial products LCD TV is for the application technology requirement of diffuser plate, except should possessing good diffused transmission rate, diffuse reflectance and optical haze degree etc., also should have the ultraviolet ability that outstanding dimensional stability and good opposing are sent by the light source cold cathode fluorescent lamp.
Existing technology, being called " diffuser plate and manufacture method thereof " disclosed diffuser plate such as Chinese patent publication number CN1402083A name, is by coating and through the diffuser plate of polyreaction be combined into two-layer composite by transparency carrier (for example acrylic plate, polycarbonate (PC) plate or glass etc.) and liquid state diffusion film.Obviously, this existing diffuser plate, because said substrate does not possess or seldom possesses the light diffusion, and the once light of depending diffusion barrier alone spreads, add because it takes is to be coated with cloth production process, the depth of parallelism of the flatness on diffusion barrier surface and diffusion barrier and substrate is all relatively poor, thereby optical effects such as the optical haze degree of this existing diffuser plate and brilliant degree are poor.The quality of existing this diffuser plate is dissatisfactory.
The production method of existing diffuser plate, main have two kinds of thermal treatment injection molding and cutain coatings.The former is at the production stage of first kind of production method: at first, be fixed on flexible pipe one on glass with many fine rules (jewellery wire); Then, this glass and another glass are fixed with anchor clamps, again with wherein fine rule pull-up, the diffusion material of liquid state is annotated in wherein; At last, mould and the diffusion material that injects are wherein inserted 70 ℃ of heated air circulation type baking ovens after 3 hours, insert 100 ℃ baking oven 1 hour again, carry out the demoulding after taking out cooling, promptly get the diffuser plate that solidifies.And the production stage of second kind of production method of the latter is: at first, provide a substrate; Again a diffusion material is placed in the container, this diffusion material is flowed out in this container in the mode of waterfall curtain, and coat on this substrate; The substrate that scribbles this diffusion material with a light source irradiation, so that this diffusion material solidifies, and then forms a diffusion barrier, is promptly got double-deck diffuser plate.By the production method that has above-described two kinds of diffuser plates as seen, all exist the production technology more complicated, production efficiency is low, and online production technical quality control ratio is than deficiencies such as difficulties.
Summary of the invention
The object of the present invention is to provide the good and the second best in quality diffuser plates that are used for the LCD TV backlight module of performance such as a kind of optical haze degree and brilliant degree, and production technology is simple and easy, the production efficiency height, the online production technical quality is the production method of the diffuser plate that is used for the LCD TV backlight module of control easily, to overcome the deficiency of prior art.
The total design of technical scheme that realizes the purpose of the diffuser plate that is used for the LCD TV backlight module of the present invention is, under the prerequisite of technical features such as optical haze degree that effectively guarantees diffuser plate and brilliant degree, to make also that diffuser plate has good dimensional stability, anti-uv-ray is strong and long serviceable life.For this reason, the diffuser plate that is used for the LCD TV backlight module of the present invention preferably adopts layered composite structure, promptly is made up of substrate layer and a side layer, three layers of thermoplastic coextru-lamination of opposite side layer (or claiming the both sides composite bed).And substrate layer preferably adopts is that transparent Polymerization of Methyl thing or its multipolymer (mainly comprising PMMA, MS, MBS) is the blended layer of base material with silicones (Silicone) class or copolymer of methyl methacrylatestyrene (MS) class light diffusing agent composition; What one side layer and opposite side layer preferably adopted is that transparent polymethylmethacrylate (PMMA) or polycarbonate (PC) is the blended layer of base material and polymethylmethacrylate (PMMA) class or copolymer of methyl methacrylatestyrene (MS) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) composition.And substrate layer and a side layer, opposite side layer are integral via the heating plasticizing coextru-lamination, and said light diffusing agent of the present invention and ultraviolet light absorber are known in the industry, in stockit is available in the international market supply.
Be used for the same design of technical scheme of the diffuser plate purpose of LCD TV backlight module for above-mentioned realization the present invention, the technical scheme that the present invention is used for the diffuser plate of LCD TV backlight module has following four kinds.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that first kind of technical scheme of its purpose is, a kind of diffuser plate that is used for the LCD TV backlight module, have a substrate layer and a side layer, its inventive point is: it also has the opposite side layer, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer is the blended layer that base material and silicon resin (Silicone) class light diffusing agent are formed by copolymer of methyl methacrylatestyrene (MS); The blended layer that one side layer and opposite side layer all are made up of for base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polymethylmethacrylate (PMMA).
The first kind of technical scheme that is used for the diffuser plate of LCD TV backlight module by above given the present invention can be understood, the substrate layer base material is a copolymer of methyl methacrylatestyrene, this material is compared with polymethylmethacrylate has less moisture pick-up properties, be subjected to the influence of ambient humidity less, so the dimensional stability of sheet material is better; The base material of one side layer and opposite side layer is polymethylmethacrylate, this material is compared with copolymer of methyl methacrylatestyrene has higher heat distortion temperature and anti-uv-ray preferably, be subjected to the influence of environment temperature less, therefore the dimensional stability of sheet material is better, and serviceable life is longer; The main effect of light diffusing agent is that line source is atomized into area source, with distribution of light evenly and guide the scattering of light direction, increases brightness; The main effect of ultraviolet light absorber is an anti-uv-ray of strengthening sheet material.Because substrate layer and a side layer, the equal cording of opposite side layer have the blended layer of light diffusing agent, so the diffuser plate that the present invention is used for the LCD TV backlight module compared with the prior art, and performances such as its optical haze degree, brilliant degree all are able to improvement by a relatively large margin.Therefore its effect is good when diffuser plate of the present invention is used for the LCD TV backlight module.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that the further inventive point of first kind of technical scheme of its purpose is: the total thickness of diffuser plate is 1.5～4mm, and a side layer wherein, the thickness of opposite side layer are 0.1～0.8mm.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that second kind of technical scheme of its purpose is, a kind of diffuser plate that is used for the LCD TV backlight module, have a substrate layer and a side layer, its inventive point is: it also has the opposite side layer, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer is the blended layer that base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent are formed by MBS (MBS); The blended layer that one side layer and opposite side layer all are made up of for base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polymethylmethacrylate (PMMA).
The second kind of technical scheme that is used for the diffuser plate of LCD TV backlight module by above given the present invention is understood that, the substrate layer base material is the multipolymer of methyl methacrylate-butadiene-styrene, this material is compared with polymethylmethacrylate has less moisture pick-up properties, be subjected to the influence of ambient humidity less, so the dimensional stability of sheet material is better; The base material of one side layer and opposite side layer is polymethylmethacrylate, this material is compared with MBS has higher heat distortion temperature and anti-uv-ray preferably, be subjected to the influence of environment temperature less, therefore the dimensional stability of sheet material is better, and serviceable life is longer.In addition, also have above-mentioned first kind of other strong point that scheme had.Therefore its effect is good when diffuser plate of the present invention is used for the LCD TV backlight module.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that the further inventive point of second kind of technical scheme of its purpose is: the total thickness of diffuser plate is 1.5～4mm, and a side layer wherein, the thickness of opposite side layer are 0.1～0.8mm.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that the third technical scheme of its purpose is, a kind of diffuser plate that is used for the LCD TV backlight module, have a substrate layer and a side layer, its inventive point is: it also has the opposite side layer, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer is the blended layer that base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent are formed by polymethylmethacrylate (PMMA); The blended layer that one side layer and opposite side layer all are made up of for base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polymethylmethacrylate (PMMA).
Be used for by above given the present invention the LCD TV backlight module diffuser plate the third technical scheme as seen, although the used base material of substrate layer and a side layer, opposite side layer is identical with light diffusing agent, but, and can under the prerequisite that guarantees its effective efficiency, further save manufacturing cost because substrate layer does not add ultraviolet light absorber.Its effect is good when diffuser plate of the present invention is used for the LCD TV backlight module.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that the further inventive point of the third technical scheme of its purpose is: the total thickness of diffuser plate is 1.5～4mm, and a side layer wherein, the thickness of opposite side layer are 0.1～0.8mm.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that the 4th kind of technical scheme of its purpose is, a kind of diffuser plate that is used for the LCD TV backlight module, have a substrate layer and a side layer, its inventive point is: it also has the opposite side layer, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer is the blended layer that base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent are formed by polymethylmethacrylate (PMMA); The blended layer that one side layer and opposite side layer all are made up of for base material and polymethylmethacrylate (PMMA) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polycarbonate (PC).
The 4th kind of technical scheme that is used for the diffuser plate of LCD TV backlight module by above given the present invention can be understood, the substrate layer base material is a polymethylmethacrylate, this material is compared with polycarbonate has anti-uv-ray preferably, so serviceable life is longer; The base material of one side layer and opposite side layer is polycarbonate, and this material is compared with polymethylmethacrylate has higher heat distortion temperature, is subjected to the influence of environment temperature less, and the dimensional stability of sheet material is better.Therefore its effect is good when diffuser plate of the present invention is used for the LCD TV backlight module.
The present invention is used for the diffuser plate of LCD TV backlight module and realizes that the further inventive point of the 4th kind of technical scheme of its purpose is: the total thickness of diffuser plate is 1.5～4mm, and a side layer wherein, the thickness of opposite side layer are 0.1～0.8mm.
Take a broad view of diffuser plate that above given the present invention is used for the LCD TV backlight module and realize four kinds of technical schemes of its purpose, all be for same total design, and can realize the technical scheme of its same purpose.
By the further inventive point of the technical scheme of the above-mentioned four kinds diffuser plates that are used for the LCD TV backlight module as seen, the gross thickness of given diffuser plate is smaller.And meagreization that this slim diffuser plate is the LCD TV backlight module created precondition.
Although in four kinds of technical scheme differences that are used for its composition of diffuser plate of LCD TV backlight module of preceding described the present invention,, fully can be with producing with a kind of production method.This production method is as follows: a kind of production method that is used for the diffuser plate of LCD TV backlight module as the present invention, with the plastic extruding forming machine is main production equipments, its inventive point is: carry out according to following steps successively: get the raw materials ready: according to each composition weight percentage composition scope of the used intermingling material of substrate layer: light diffusing agent is 0.1～0.75%, and base material is a surplus; One side layer (2) and each composition weight percentage composition scope of the used intermingling material of opposite side layer (3): light diffusing agent is 5～20%, and ultraviolet light absorber is 0.1～1.2%, and base material is that the proportioning of surplus is weighed respectively, mixes and stirs then, dehumidifies; Heating plasticizing: the used intermingling material of substrate layer added become owner of the plastic extruding forming machine and heating plasticizing becomes viscous state; One side layer and opposite side layer auxilliary plastic extruding forming machine of used intermingling material adding and heating plasticizing are become viscous state; Co-extrusion: will become the used intermingling material of substrate layer of viscous state and a side layer, the used intermingling material of opposite side layer to import composite bed divider with main plastic extruding forming machine configuration simultaneously through heating plasticizing, by main plastic extruding forming machine with substrate layer and a side layer, opposite side layer coextru-lamination all-in-one-piece goods; Back arrangement: coextru-lamination all-in-one-piece goods after the roll-in typing, covering diaphragm, are cut into manufactured goods again.
The invention described above is used for the light diffusing agent of the used intermingling material of substrate layer of production method indication of the diffuser plate of LCD TV backlight module, be realize in first kind of technical scheme of diffuser plate purpose silicones (Silicone) class, realize copolymer of methyl methacrylatestyrene (MS) class in second kind of the diffuser plate purpose, the third and the 4th kind of technical scheme; And the base material of substrate layer be realize in first kind of technical scheme of diffuser plate purpose copolymer of methyl methacrylatestyrene (MS), realize in second kind of technical scheme of diffuser plate purpose MBS (MBS), realize the polymethylmethacrylate (PMMA) in the third and the 4th kind of technical scheme of diffuser plate purpose.The one side layer of indication and the light diffusing agent of the used intermingling material of opposite side layer, be realize in first kind, second kind of diffuser plate purpose and the third technical scheme copolymer of methyl methacrylatestyrene (MS) class light diffusing agent, realize polymethylmethacrylate (PMMA) the class light diffusing agent in the 4th kind of technical scheme of diffuser plate purpose; And ultraviolet light absorber is the benzotriazole ultraviolet light absorber of realizing in first kind, second kind of the diffuser plate purpose, the third and the 4th kind of technical scheme (UV); And the base material of a side layer and opposite side layer is, realize in first kind, second kind of the diffuser plate purpose and the third technical scheme polymethylmethacrylate (PMMA), realize the polycarbonate (PC) in the 4th kind of technical scheme of diffuser plate purpose.
The aforesaid production method that is used for the diffuser plate of LCD TV backlight module, through repeatedly experiment repeatedly, its further inventive point is: the weight percent compositing range of preferred each component in the used intermingling material of said substrate layer is: light diffusing agent is 0.1～0.5%; Base material is a surplus; The weight percent compositing range of each component in a said side layer and the used intermingling material of opposite side layer is: light diffusing agent is 5～15%; Ultraviolet light absorber is 0.1～0.9%; Base material is a surplus.
Test of many times proves, is suitable by the weight percent compositing range of each component of the used intermingling material of the above given preferred substrate layer of process and a side layer, opposite side layer.
The particle size range of said light diffusing agent is 1.0～15 μ m.Consideration for cost performance thinks that this particle size range is suitable.
Spherical in shape or the hemispherical grain of said light diffusing agent perhaps is subglobular or is suitable near hemispherical grain.This is because this spherical in shape or hemispherical grain, perhaps is subglobular or expands the light diffusivity of agent near the light of hemispherical grain more intense.
After technique scheme of the present invention is implemented, because the present invention is used for the diffuser plate system of LCD TV backlight module by three layers of compound composition of mixolimnion that has light diffusing agent, therefore when diffuser plate of the present invention is used for the LCD TV backlight module, performances such as optical haze degree that it had and brilliant degree are good, and dimensionally stable, long service life, quality is good etc., and characteristics are conspicuous; And the present invention is used for the production method of the diffuser plate of LCD TV backlight module, and the production technology that it had owing to adopt three layers of thermoplastic coextru-lamination technology is simple and easy, the production efficiency height, and characteristics such as the easy control of online production technical quality also are conspicuous.Compared with the prior art, the present invention has substantial characteristics and marked improvement.
Description of drawings
Fig. 1 is a kind of example structure sectional schematic diagram (amplification) that is used for the diffuser plate of LCD TV backlight module of the present invention;
Fig. 2 is the embodiment process flow diagram of the production method of a kind of diffuser plate that is used for the LCD TV backlight module of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
The present invention is used for one of the embodiment of the diffuser plate of LCD TV backlight module, as shown in Figure 1.A kind of diffuser plate that is used for the LCD TV backlight module is made up of substrate layer 1 and a side layer 2, opposite side layer 3, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer 1 is the blended layer that base material and silicon resin (Silicone) class light diffusing agent are formed by copolymer of methyl methacrylatestyrene (MS); The blended layer that one side layer 2 and opposite side layer 3 all are made up of for base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polymethylmethacrylate (PMMA); Said substrate layer 1 and a side layer 2, opposite side layer 3 are integral via the heating plasticizing coextru-lamination.The gross thickness of said diffuser plate is 4mm, and a side layer 2 wherein, the thickness of opposite side layer 3 are 0.8mm.
The present invention be used for the LCD TV backlight module diffuser plate embodiment two, as shown in Figure 1.A kind of diffuser plate that is used for the LCD TV backlight module is made up of substrate layer 1 and a side layer 2, opposite side layer 3, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer 1 is the blended layer that base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent are formed by MBS (MBS); The blended layer that one side layer 2 and opposite side layer 3 all are made up of for base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polymethylmethacrylate (PMMA); Said substrate layer 1 and a side layer 2, opposite side layer 3 are integral via the heating plasticizing coextru-lamination.The gross thickness of said diffuser plate is 1.5mm, and a side layer 2 wherein, the thickness of opposite side layer 3 are 0.1mm.
The present invention be used for the LCD TV backlight module diffuser plate embodiment three, as shown in Figure 1.A kind of diffuser plate that is used for the LCD TV backlight module is made up of substrate layer 1 and a side layer 2, opposite side layer 3, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer 1 is the blended layer that base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent are formed by polymethylmethacrylate (PMMA); The blended layer that one side layer 2 and opposite side layer 3 all are made up of for base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polymethylmethacrylate (PMMA); A said substrate layer 1 and a side layer 2, another example layer 3 are integral via the heating plasticizing coextru-lamination.The gross thickness of said diffuser plate is 3mm, and a side layer 2 wherein, the thickness of opposite side layer 3 are 0.5mm.
The present invention be used for the LCD TV backlight module diffuser plate embodiment four, as shown in Figure 1.A kind of diffuser plate that is used for the LCD TV backlight module is made up of substrate layer 1 and a side layer 2, opposite side layer 3, is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer 1 is the blended layer that base material and copolymer of methyl methacrylatestyrene (MS) class light diffusing agent are formed by polymethylmethacrylate (PMMA); The blended layer that one side layer 2 and opposite side layer 3 all are made up of for base material and polymethylmethacrylate (PMMA) class light diffusing agent and benzotriazole ultraviolet light absorber (UV) polycarbonate (PC); Said substrate layer 1 and a side layer 2, opposite side layer 3 are integral via the heating plasticizing coextru-lamination.The gross thickness of said diffuser plate is 2mm, and a side layer 2 wherein, the thickness of opposite side layer 3 are 0.4mm.
As described in the preceding four kinds of the present invention are used for one of the embodiment of production method of the diffuser plate of LCD TV backlight module, as shown in Figure 2.A kind of production method that is used for the diffuser plate of LCD TV backlight module, with the plastic extruding forming machine is main production equipments, carry out according to following steps successively: get the raw materials ready: according to substrate layer 1 and a side layer 2, opposite side layer 3 material therefor, form by its weight percent respectively and weigh, mix and stir, dehumidify, the weight percent of each component composition is in substrate layer 1 used intermingling material, light diffusing agent is 0.75%, and its surplus is a base material; The weight percent of each component composition is in a side layer 2 and opposite side layer 3 used intermingling material, and light diffusing agent is 20%, and ultraviolet light absorber is 1.2%, and its surplus is a base material; Heating plasticizing: substrate layer 1 used intermingling material added become owner of the plastic extruding forming machine and heating plasticizing becomes viscous state; One side the layer 2 and opposite side layer 3 auxilliary plastic extruding forming machine of used intermingling materials adding and heating plasticizing are become viscous state; Co-extrusion: will become the substrate layer 1 used intermingling material of viscous state and a side layer 2, opposite side layer 3 used intermingling material to import composite bed divider with main plastic extruding forming machine configuration simultaneously through heating plasticizing, by main plastic extruding forming machine with substrate layer 1 and a side layer 2, opposite side layer 3 coextru-lamination all-in-one-piece goods; Back arrangement: coextru-lamination all-in-one-piece goods after the roll-in typing, covering diaphragm, are cut into manufactured goods again.Said co-extrusion and typing, covering the diaphragm operation, is to carry out in 100000 grades of purifying areas of sealing.The particle size range of said light diffusing agent is 10 μ m; Spherical in shape or the hemispherical grain of light diffusing agent.
The present invention as described in the preceding the production method of four kinds of diffuser plates that are used for the LCD TV backlight module embodiment two, as shown in Figure 2, be further the specializing of one of embodiment of production method that the present invention is used for the diffuser plate of LCD TV backlight module here.A kind of production method that is used for the diffuser plate of LCD TV backlight module, the weight percent of each component in said substrate layer 1 used intermingling material are formed: light diffusing agent is 0.1%; Base material is a surplus; The weight percent of each component in a said side layer 2 and opposite side layer 3 used intermingling material is formed: light diffusing agent is 15%; Ultraviolet light absorber is 0.1%; Base material is a surplus.And the particle diameter of said light diffusing agent is 1.0 μ m, and light diffusing agent is spherical in shape/hemispherical grain, and other all is used for one of the embodiment of production method of the diffuser plate of LCD TV backlight module as the present invention.
As described in the preceding four kinds be used for the LCD TV backlight module diffuser plate production method embodiment three, as shown in Figure 2.Here be further the specializing of one of embodiment of production method that the present invention is used for the diffuser plate of LCD TV backlight module.A kind of production method that is used for the diffuser plate of LCD TV backlight module, it is that light diffusing agent 0.5%, base material are surplus that the weight percent of each component in said substrate layer 1 used intermingling material is formed; The weight percent of each component composition is in a said side layer 2 and opposite side layer 3 used intermingling material, and light diffusing agent is 5%, and ultraviolet light absorber is 0.9%, and base material is a surplus.And the particle diameter of said light diffusing agent is 15 μ m, and light diffusing agent is that subglobular/near semisphere, other all is used for the production method of the diffuser plate of LCD TV backlight module as the present invention
One of embodiment.
The test testing result shows that every technical indicator of diffuser plate of the present invention all meets or exceeds the desired index of LCD TV backlight module group diffusing board application technology.
Claims (12)
1, a kind of diffuser plate that is used for the LCD TV backlight module has a substrate layer (1) and a side layer (2), and it is characterized in that: it also has opposite side layer (3), is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer (1) is the blended layer that base material and silicon resin class light diffusing agent are formed by copolymer of methyl methacrylatestyrene; One side layer (2) and opposite side layer (3) are all by the polymethylmethacrylate blended layer that to be base material form with copolymer of methyl methacrylatestyrene class light diffusing agent and benzotriazole ultraviolet light absorber.
2, the diffuser plate that is used for the LCD TV backlight module according to claim 1 is characterized in that: the total thickness of diffuser plate is 1.5～4mm, and a side layer (2) wherein, the thickness of opposite side layer (3) are 0.1～0.8mm.
3, a kind of diffuser plate that is used for the LCD TV backlight module has a substrate layer (1) and a side layer (2), and it is characterized in that: it also has opposite side layer (3), is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer (1) is the blended layer that base material and copolymer of methyl methacrylatestyrene class light diffusing agent are formed by MBS; One side layer (2) and opposite side layer (3) are all by the polymethylmethacrylate blended layer that to be base material form with copolymer of methyl methacrylatestyrene class light diffusing agent and benzotriazole ultraviolet light absorber.
4, the diffuser plate that is used for the LCD TV backlight module according to claim 3 is characterized in that: the total thickness of diffuser plate is 1.5～4mm, and a side layer (2) wherein, the thickness of opposite side layer (3) are 0.1～0.8mm.
5, a kind of diffuser plate that is used for the LCD TV backlight module has a substrate layer (1) and a side layer (2), and it is characterized in that: it also has opposite side layer (3), is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer (1) is the blended layer that base material and copolymer of methyl methacrylatestyrene class light diffusing agent are formed by polymethylmethacrylate; One side layer (2) and opposite side layer (3) are all by the polymethylmethacrylate blended layer that to be base material form with copolymer of methyl methacrylatestyrene class light diffusing agent and benzotriazole ultraviolet light absorber.
6, the diffuser plate that is used for the LCD TV backlight module according to claim 5 is characterized in that: the total thickness of diffuser plate is 1.5～4mm, and a side layer (2) wherein, the thickness of opposite side layer (3) are 0.1～0.8mm.
7, a kind of diffuser plate that is used for the LCD TV backlight module has a substrate layer (1) and a side layer (2), and it is characterized in that: it also has opposite side layer (3), is to be the 3 thermoplastic coextru-lamination plates of shape structure layer by layer; Substrate layer (1) is the blended layer that base material and copolymer of methyl methacrylatestyrene class light diffusing agent are formed by polymethylmethacrylate; One side layer (2) and opposite side layer (3) are all by the polycarbonate blended layer that to be base material form with polymethylmethacrylate class light diffusing agent and benzotriazole ultraviolet light absorber.
8, the diffuser plate that is used for the LCD TV backlight module according to claim 7 is characterized in that: the total thickness of diffuser plate is 1.5～4mm, and a side layer (2) wherein, the thickness of opposite side layer (3) are 0.1～0.8mm.
9, a kind ofly being used for the production method of the diffuser plate of LCD TV backlight module as the present invention, is main production equipments with the plastic extruding forming machine, it is characterized in that: carry out according to following steps successively:
A, get the raw materials ready: according to each composition weight percentage composition scope of the used intermingling material of substrate layer (1): light diffusing agent is 0.1～0.75%, and base material is a surplus; One side layer (2) and each composition weight percentage composition scope of the used intermingling material of opposite side layer (3): light diffusing agent is 5～20%, and ultraviolet light absorber is 0.1～1.2%, and base material is that the proportioning of surplus is weighed respectively, mixes and stirs then, dehumidifies;
B, heating plasticizing: the used intermingling material of substrate layer (1) added become owner of the plastic extruding forming machine and heating plasticizing becomes viscous state; One side layer (2) and opposite side layer (3) auxilliary plastic extruding forming machine of used intermingling material adding and heating plasticizing are become viscous state;
C, co-extrusion: will become the used intermingling material of substrate layer (1) of viscous state and a side layer (2), the used intermingling material of opposite side layer (3) to import composite bed divider with main plastic extruding forming machine configuration simultaneously through heating plasticizing, by main plastic extruding forming machine with substrate layer (1) and a side layer (2), opposite side layer (3) coextru-lamination all-in-one-piece goods;
D, back arrangement: coextru-lamination all-in-one-piece goods after the roll-in typing, covering diaphragm, are cut into manufactured goods again.
10, the production method that is used for the diffuser plate of LCD TV backlight module according to claim 9 is characterized in that:
The weight percent compositing range of each component in the used intermingling material of said substrate layer (1) is: light diffusing agent is 0.1～0.5%; Base material is a surplus.
The weight percent compositing range of each component in a said side layer (2) and the used intermingling material of opposite side layer (3) is: light diffusing agent is 5～15%; Ultraviolet light absorber is 0.1～0.9%; Base material is a surplus.
11, according to claim 9 or the 10 described production methods that are used for the diffuser plate of LCD TV backlight module, it is characterized in that: the particle size range of said light diffusing agent is 1.0～15 μ m.
12, the production method that is used for the diffuser plate of LCD TV backlight module according to claim 11 is characterized in that: the spherical in shape or hemispherical grain of said light diffusing agent perhaps is subglobular or near hemispherical grain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100142916A CN1560680A (en) | 2004-03-09 | 2004-03-09 | Diffusion plate for backlight assembly of liquid crystal TV. and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100142916A CN1560680A (en) | 2004-03-09 | 2004-03-09 | Diffusion plate for backlight assembly of liquid crystal TV. and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1560680A true CN1560680A (en) | 2005-01-05 |
Family
ID=34440304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100142916A Pending CN1560680A (en) | 2004-03-09 | 2004-03-09 | Diffusion plate for backlight assembly of liquid crystal TV. and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1560680A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390571C (en) * | 2004-06-28 | 2008-05-28 | 颖台科技股份有限公司 | Light spreading plate with high surface hardness and its producing method |
| CN1996062B (en) * | 2006-01-06 | 2010-09-01 | 住友化学株式会社 | Multilayered light diffuser plate |
| CN101135739B (en) * | 2006-09-01 | 2011-08-31 | 颖台科技股份有限公司 | Diffusing plate having multiple aspheric surface structure |
| CN101655214B (en) * | 2008-08-19 | 2011-12-14 | 北京京东方光电科技有限公司 | Backlight structure |
| CN108919388A (en) * | 2018-06-28 | 2018-11-30 | 惠州市创亿达新材料有限公司 | The processing method of optical function plate |
| CN113291024A (en) * | 2021-05-19 | 2021-08-24 | 杭州赛宁板材有限公司 | Multilayer co-extrusion composite light diffusion plate and preparation method thereof |
-
2004
- 2004-03-09 CN CNA2004100142916A patent/CN1560680A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390571C (en) * | 2004-06-28 | 2008-05-28 | 颖台科技股份有限公司 | Light spreading plate with high surface hardness and its producing method |
| CN1996062B (en) * | 2006-01-06 | 2010-09-01 | 住友化学株式会社 | Multilayered light diffuser plate |
| CN101135739B (en) * | 2006-09-01 | 2011-08-31 | 颖台科技股份有限公司 | Diffusing plate having multiple aspheric surface structure |
| CN101655214B (en) * | 2008-08-19 | 2011-12-14 | 北京京东方光电科技有限公司 | Backlight structure |
| CN108919388A (en) * | 2018-06-28 | 2018-11-30 | 惠州市创亿达新材料有限公司 | The processing method of optical function plate |
| CN113291024A (en) * | 2021-05-19 | 2021-08-24 | 杭州赛宁板材有限公司 | Multilayer co-extrusion composite light diffusion plate and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1904691B (en) | Optical unit, a method of manufacturing the same, a backlight assembly having the same and a display device having the same | |
| CN1253730C (en) | Light reflector | |
| KR20080021043A (en) | Light diffusing plate and lighting device using it | |
| CN101084458B (en) | Light reflector and surface light source device using the same | |
| TWI379106B (en) | Light diffusion member, back light assembly including the same and display device including the same | |
| CN101322051A (en) | Multi-layered light diffusion plate and liquid crystal display device comprising the same | |
| CN101021645A (en) | Liquid crystal display | |
| CN102834742A (en) | Light-diffusing film for led lamp | |
| JP4300826B2 (en) | Light diffusing film and direct surface light source using the same | |
| CN1952698A (en) | Diffusion sheet for TFT-LCD | |
| CN1560680A (en) | Diffusion plate for backlight assembly of liquid crystal TV. and production method | |
| TW200523626A (en) | Structure of light expansion plate having anti-UV direct type backlight module, and the manufacturing method thereof | |
| CN101546062A (en) | Diffusion plate for backlight source of liquid crystal display | |
| CN100517022C (en) | Optical dispersion lamination board for backlight module | |
| CN113376722A (en) | Light diffusion film and preparation method thereof | |
| CN101285901A (en) | Light diffusing plate | |
| CN114270098A (en) | Light diffusion film | |
| CN2690918Y (en) | Spreading plate for liquid crystal TV back light module unit | |
| KR101137622B1 (en) | Patterned Diffuser Plate and Backlight Unit Assembly Comprising the Same | |
| JP4560890B2 (en) | Method for producing laminated light diffusing film | |
| KR20080042882A (en) | Ligth diffusion film and surface ligth source using same | |
| JP2003344613A (en) | Area light source and diffusive film therefor | |
| KR101068635B1 (en) | High brightness diffussion film improved engraving proportion and Preparing thereof | |
| Ji et al. | 79‐1: Invited Paper: A New Generation of QD‐Diffusion Plate Technology for TV | |
| JP2010015129A (en) | Antistatic light diffuser plate for direct backlight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |