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Light diffusion lamination plate

A light diffusion and laminate technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of complicated assembly steps of backlight modules and no light diffusion effect, and achieve the effect of good light diffusion and high brightness

Inactive Publication Date: 2009-02-25
CHI MEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the lens film must be used in combination with the light-diffusing film because it has no light-diffusing effect, resulting in the problem of complicated assembly steps of the backlight module.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] The material of the protective layer 3 of the present embodiment is mainly polymethyl methacrylate resin, and the first resin layer 1 is 3 weight parts of the organic microparticle light diffusing agent that is mixed with silicone resin in 100 weight parts of polycarbonate resins, and this second The resin layer 2 is polymethyl methacrylate resin. The molding method is to use the co-extrusion molding device 6 of the three-layer hollow plate, the cylinder temperature is kept at 200-250°C, the mold temperature is 240-260°C, the vacuum degree of the degassing part is 20mmHg, and the special-shaped die lips with parallel quadrilaterals are used. Extrude the die head 611, and adjust the discharge amount of the first resin layer 1, the second resin layer 2 and the protective layer 3 molding materials while co-extruding and forming, and finally, coat the surface of the second resin layer 2 with UV curable acrylic Resin is used, and the microlens layer 4 in the shape of a prism...

Embodiment 2

[0103] Referring to FIG. 3 , the difference between Embodiment 2 of the light-diffusing laminate of the present invention and the Embodiment 1 lies in that the light-diffusing agent in the first resin layer 1 of Embodiment 2 is used in an amount of 1 part by weight.

Embodiment 3

[0105] Referring to Fig. 6, the difference between Embodiment 3 of the light-diffusing laminated board of the present invention and Embodiment 1 is that the thicknesses of the protective layer 3, the first resin layer 1 and the second resin layer 2 in Embodiment 3 are respectively 0.05mm , 1.5 mm and 1.3 mm, and the strip-shaped hollow chamber 5 of embodiment 3 is only surrounded by the second resin layer 2 and does not touch the first resin layer 1 .

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Abstract

A light-diffusion lamination plate including a first resin layer, a second resin layer arranged on the first resin layer, a micro-lens layer arranged on the second resin layer, and a plurality of strip-shaped hollow chambers. The positions of the strip-shaped hollow chambers can be coated with the first and the second resin layers at the same time, or be coated only with the second resin layer. The first resin layer has the function of light-diffusion, and the micro-lens layer has the light-centralization function of centralizing the emitted light to increase the light emitting amount, therefore, the light-diffusion lamination plate of the invention has the functions of light-diffusion and light-centralization, and can achieve the effects of high brightness and good light-diffusion after being matched with the conformations and the positions of the strip-shaped hollow chambers.

Description

technical field [0001] The present invention relates to a light-diffusing laminated board, in particular to a light-diffusing laminated board with strip-shaped hollow chambers and matching the positions of the strip-shaped hollow chambers to achieve high luminance and good light diffusion. Background technique [0002] Due to its excellent mechanical properties, heat resistance, and high light transmittance, polycarbonate resin has been widely used in light diffusion plates for side-lit or direct-lit backlit small LCD displays or small LCD TVs in recent years. use. A known light-diffusing plate made of polycarbonate, such as Japanese Laid-Open Patent Application No. 05-257002, is a resin composition in which calcium carbonate or bridged polyacrylate resin is added to polycarbonate resin. Another example is that Japanese Patent Laid-Open No. 03-078701 is a light diffusion plate for a liquid crystal display backlight module made of a polycarbonate resin composition containing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02F1/1335
Inventor 陈信宏曾炜展郭俊良
Owner CHI MEI CORP
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