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Optical film

An optical film and grating technology, applied in the field of optical film, can solve problems such as poor visual effects, achieve uniform dark picture and color quality, and reduce light leakage defects

Active Publication Date: 2018-04-20
BENQ MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the aforementioned poor visual effects under different viewing angles, the present invention provides an optical film

Method used

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Embodiment Construction

[0028] In order to make the invention features, content and advantages of the present invention and the effects that can be achieved easier to understand, the present invention is hereby combined with the accompanying drawings, and is described in detail as follows in the form of embodiments, and the drawings used therein, its gist It is only for illustration and auxiliary description, not necessarily the true proportion and precise configuration of the present invention after implementation, so it should not be interpreted or limited to the scope of rights of the present invention in actual implementation based on the proportion and configuration relationship of the attached drawings. Explain first.

[0029] Embodiments of the optical film according to the present invention will be described below with reference to related drawings. For ease of understanding, the same components in the following embodiments are described with the same symbols.

[0030] The invention relates t...

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Abstract

The invention relates to an optical film comprising a first diffraction structure layer, a second diffraction structure layer, and a cover layer. A plurality of first diffraction gratings arranged inthe same direction are arranged on the surface of the first diffraction structure layer; the gaps between the first diffraction gratings of the first diffraction structure layer are filled with the second diffraction structure layer; and a plurality of second diffraction gratings arranged in the same direction are arranged on the first diffraction structure layer, wherein the arrangement directionof the first diffraction gratings and the arrangement direction of the second diffraction gratings are parallel to each other. The cover layer is formed on the second diffraction gratings of the second diffraction structure layer. At least one of the first diffraction structure layer, the second diffraction structure layer, and the cover layer includes dye. With the optical film, the light leakage defect of the existing liquid crystal display device in a large-visual-angle state is overcome; and thus the liquid crystal display device has the uniform dark-state pictures and color pictures at all visual angles.

Description

technical field [0001] The invention relates to an optical film used for a liquid crystal display, in particular to an optical film capable of reducing large viewing angle deviation, light leakage in a dark state, and increasing the color of each viewing angle and the uniformity of a dark state picture. Background technique [0002] Since the current liquid crystal display (LCD) is a non-self-luminous display, the backlight is easily affected by the asymmetry of the liquid crystal molecules after the backlight passes through the liquid crystal panel, so that the picture quality of the front viewing angle and the large viewing angle have a large drop. [0003] Especially when displaying a black picture, because the backlight of the conventional liquid crystal display cannot be turned off, and the light is only shielded by switching the dark state of the liquid crystal panel. Color shifts or unevenness due to different viewing angles. Please refer to figure 1 , which is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/18G02F1/1335G02F1/137
CPCG02B5/18G02F1/133504G02F1/13737
Inventor 郭真宽洪群泰周盟杰沈俊男林孟颉林佳锋吴丰旭郑孟嘉
Owner BENQ MATERIALS
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