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Composite blooming

An optical film and microstructure technology, applied in the field of composite optical film, can solve the problems of high price, complex backlight module, and increased thickness of backlight module

Inactive Publication Date: 2009-03-25
ETERNAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the conventional light-condensing film is a regular strip structure with a fixed width, it is easy to produce optical interference (optical interference) or diffraction (optical interference) or diffraction ( Optical diffraction) phenomenon, resulting in rainbow grain (rainbow grain), light and dark grain, moiré or Newton's ring (Newton's ring) on ​​the LCD
At present, it is known that a protective diffuser film (or top diffuser film) can be arranged on the light concentrating film to improve the above-mentioned optical phenomenon, but the disadvantage is that the price of such a top diffuser film (top diffuser) is too expensive, and an additional The optical film will increase the thickness of the backlight module and make the backlight module more complicated, which does not meet the trend of light and thin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] On the surface of the substrate with a diffuse microstructure with a haze of 50% in Table 1, coat an acrylic resin coating with a thickness of about 15 μm, and form a prism pattern on the coating by roller embossing, and then reuse The composite optical film of the present invention is obtained by hardening it with high-energy ultraviolet rays (UV).

Embodiment 2

[0076] On the surface of the substrate with a diffuse microstructure with a haze of 90% in Table 1, an acrylic resin coating with a thickness of about 15 μm is coated, and a prism pattern is formed on the coating by roller embossing, and then reused The composite optical film of the present invention is obtained by hardening it with high-energy ultraviolet rays (UV).

Embodiment 3 to 5

[0078]In order to improve the problem of light and dark lines and improve the scratch resistance of the optical film, the present invention further blends components E, F, G and H into different hard mask liquids in the proportions shown in Table 2 to obtain a scratch-resistant layer. Various hard mask liquids prepared according to Table 2 were coated on the side of the film prepared in Example 1 opposite to the structured surface to obtain a scratch-resistant layer of about 5 μm. After drying, The composite optical film with scratch-resistant layer of the present invention can be obtained.

[0079] The hard mask solution prepared according to Table 2 is coated on a transparent PET film [U34 (188 μm), Toray Co.] made a scratch-resistant layer, and in the absence of any structure on the other side, the haze value of the scratch-resistant layer was measured according to the JIS K7136 standard method.

[0080] Table 2

[0081] Example 3 Example 4 Example 5 ...

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Abstract

The invention relates to a composite optical film, which comprises a substrate provided with a diffusion microstructure and a structured surface arranged at one side of the substrate, the internal diffusion haze of the composite optical film is more than or equal to 5 percent by measuring according to the JIS K7136 standard method. Meanwhile, the composite optical film also has the optical properties of diffusion and condensation; and when used on an LCD, the composite optical film can also reduce optical dispersion and lines overlapping when overlapped with other material films besides enhancing the brightness of an LCD panel effectively.

Description

technical field [0001] The invention relates to a composite optical film, in particular to a composite optical film applied to a liquid crystal display. The composite optical film of the present invention has the optical characteristics of diffusion and light concentrating, and can reduce the phenomenon of light dispersion and moiré when the composite optical film is stacked with other material films. Background technique [0002] Generally speaking, the main structure of a liquid crystal display ("LCD" for short) includes two parts: the panel and the backlight module. The panel part includes, for example, indium tin oxide (ITO) conductive glass, liquid crystal, alignment film, color filter, polarizer, Driver integrated circuits, etc., and the backlight module includes, for example, lamp tubes, light guide plates, and various optical films. The liquid crystal panel itself does not emit light, so the backlight module as a source of brightness is an important component of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/10G02B5/02G02B5/128G02B5/04G02F1/13357G02B1/14G02F1/1335
Inventor 汪宗兴刘书宏林博文陈培欣
Owner ETERNAL MATERIALS CO LTD
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