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Optical thin sheet

An optical sheet, photometer technology, applied in optics, optical components, nonlinear optics, etc., can solve the problems of increased weight, light absorption, high production cost, ineffective utilization, etc., and achieve good optical effects.

Inactive Publication Date: 2008-09-03
ETERNAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid crystal flat panel displays are generally required to be light, thin and short, but increasing the thickness of the diffusion plate will increase the weight and the material itself will cause unavoidable light absorption, and increasing the distance between the light source and the diffusion plate will also cause part of the light to be wasted. The light source cannot be used effectively
In addition, the manufacturing process of the diffuser plate is time-consuming, and the required production cost is relatively high, resulting in a major disadvantage in the module design

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 Optical sheet of the present invention

[0038] Add 21.0 grams of acrylic resin [Eterac 7363-ts-50, Eternal Company] (about 50% solid content) into a plastic bottle, then add methyl ethyl ketone and toluene each 38.0 grams of silicone with an average particle size of 2 μm under high-speed stirring Resin bead powder 32 grams [Tospearl 120E, GE Toshiba silicones company] and 1 ~ 100nm titanium dioxide, zirconium oxide, aluminum oxide, zinc oxide and tin oxide mixed suspension in ethyl acetate total 48 grams (solid content about 50%) , just add hardening agent [Desmodur 3390, Bayer company] 2.0 grams (about 75% of solid content) at last, soak and make about 35% of solid content, the about 171.0 gram coating of total weight. The paint was coated on both sides of PET [T680E100, Mitsubishi] substrate with RDS applicator #12, and then dried at 120°C for 1 minute to produce a coating with a thickness of 10 μm on both sides of the substrate The optical flakes of the o...

Embodiment 2

[0049] The optical sheet obtained in embodiment 1 is carried out photometric test, and the result of the test is as following table 2 and Figure 5a , 5b, 8a, 8b.

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Abstract

The invention relates to an optical thin plate, comprising a substrate whose at least one side has a light diffusion layer. When detected by goniophotometer, if the light is projected at 0-90 deg.C, the detected angle of highest outgoing light intensity is plus / minus 10 deg, especially applied to flat displays.

Description

technical field [0001] The invention relates to an optical thin sheet used in a backlight assembly assembled in a liquid crystal display device, which has high uniformity optical properties, distributes light evenly, and achieves good optical effects. Background technique [0002] The liquid crystal panel itself does not emit light, so the backlight as a source of brightness is an important component of the LCD display function, and is very important for improving the brightness of the liquid crystal display. [0003] In addition, LCD products have been expanded from notebook computers or LCD screens to LCD TVs. The key points to consider are sufficient display brightness, wide viewing angle, sharp image contrast and standard service life. In order to meet the above requirements, "Direct Type Backlight" (Direct Type Backlight) has become the mainstream technology for matching large LCD TVs. figure 1 It is a schematic diagram of a conventional direct-lit backlight module. S...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02B1/04G02F1/13357G02F1/1335
Inventor 许龙麟王君庭
Owner ETERNAL MATERIALS CO LTD
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