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Preparation method of optical diffusion film and backlight module

A technology of optical diffusion and backlight module, which is applied in the direction of diffusion elements, etc., can solve the problems of low color purity of the backlight module, inability to effectively absorb the yellow and cyan stray light of the backlight module, and reduce the display effect of the liquid crystal display. Color gamut, the effect of improving color purity

Inactive Publication Date: 2019-05-31
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a preparation method of an optical diffusion film and a backlight module, which can improve the color purity of the backlight module, so as to solve the problem that the existing optical diffusion film and the backlight module cannot effectively absorb yellow and cyan colors produced in the backlight module. and other stray light, resulting in low color purity of the backlight module, which further reduces the technical problem of the display effect of the liquid crystal display

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  • Preparation method of optical diffusion film and backlight module
  • Preparation method of optical diffusion film and backlight module
  • Preparation method of optical diffusion film and backlight module

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Embodiment Construction

[0028] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [top], [bottom], [front], [back], [left], [right], [inside], [outside], [side], etc., are only for reference The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar elements are denoted by the same reference numerals.

[0029] The present invention aims at the technical problem that the existing optical diffusion film and backlight module cannot effectively absorb the stray light such as yellow and cyan produced in the backlight module, resulting in low color purity of the backlight module and further reducing the display effect of the liquid crystal display , this embodiment can solv...

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Abstract

The invention discloses a preparation method of an optical diffusion film and a backlight module. The method includes removing impurities from cellulose microcrystals to obtain a first solid compound;adding the first solid compound into a surfactant solution, and intensely stirring to form a dispersion A; mixing a solution B formed by dissolving a dye in distilled water with the dispersion A forcentrifugal treatment and removing a supernatant to form a second solid compound; dispersing the second solid compound into a polymer precursor solution, and stirring and ultrasonically dispersing toform a cellulose nanocrystal dispersion solution; and finally, solidifying to form the optical diffusion film. The preparation method of the optical diffusion film and the backlight module apply a cellulose composite material to the optical diffusion film, and yellow, cyan and other miscellaneous lights are effectively absorbed in the backlight module, and thus the color purity of the backlight module is improved, so that the color gamut of a display device is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a preparation method of an optical diffusion film and a backlight module. Background technique [0002] Currently, the mainstream thin film transistor display (Thin Film Transistor Liquid Crystal Display, TFT-LCD) in the market is a backlight type liquid crystal display, that is, the liquid crystal panel itself does not emit light, and a backlight module is required to provide a light source to display images. Therefore, the display effect of the liquid crystal display is closely related to the backlight module. Backlight modules on the market are divided into direct-lit backlights and side-lit backlights according to the incident light source. The backlight modules of these two modes need to apply a diffusion film to obtain a surface light source with uniform light intensity / chromaticity. [0003] Optical diffusion films are widely used in liquid crystal displays, advertising...

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Application Information

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IPC IPC(8): C08J5/18C08L1/04C08L33/04C08L63/00C08L83/04C08K5/00G02B5/02
CPCC08J5/18C08K5/00C08L1/04C08L33/04C08L63/00C08L83/04G02B5/02
Inventor 曾燚查宝
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD