Photodiffusion film, backlight module and liquid crystal display with photodiffusion film

A technology of backlight module and light diffusion, which is applied in the field of backlight module and liquid crystal display, which can solve the problems of display thickness and weight increase, and achieve the effects of improving utilization rate, increasing viewing angle, and improving brightness

Active Publication Date: 2013-01-30
JIANGSU HECHENG DISPLAY TECHCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this additional birefringence compensation layer will also increase the thickness and weight of the display

Method used

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  • Photodiffusion film, backlight module and liquid crystal display with photodiffusion film
  • Photodiffusion film, backlight module and liquid crystal display with photodiffusion film
  • Photodiffusion film, backlight module and liquid crystal display with photodiffusion film

Examples

Experimental program
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Embodiment 1

[0058] Such as figure 2 As shown, the liquid crystal display of this embodiment includes a light source 60 , a light source reflector 70 , a reflective layer 50 , a light guide layer 40 , a light diffusion film 30 , a light concentrating layer 20 and a liquid crystal display panel 10 . The light source can be cold cathode ray tube, inorganic or organic light emitting semiconductor, the reflective layer is made of high reflective material, the thickness of the light diffusion film is 50 microns, the light concentrating layer is made of prism, and the liquid crystal display panel is a commercially available liquid crystal display panel.

[0059] Table 1 is the formula used in this example. Five groups of formulas A, B, C, D, and E were respectively set up, and light-diffusing films were produced according to the above method (the numbers in the table represent weight percentages), and the light The haze of the diffusion film is the ratio of the scattered luminous flux deviated ...

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Abstract

The invention provides a photodiffusion film, a backlight module with the photodiffusion film and a liquid crystal display with the photodiffusion film. The photodiffusion film comprises a liquid crystal and a polymer, wherein the liquid crystal is diffused by the polymer. With the adoption of the photodiffusion film, the purposes of increasing the brightness of the backlight module and the utilization rate of light, enlarging effective angle emission light and thereby expanding a view angle of the liquid crystal display without increasing the thickness, the manufacturing complexity or the cost are fulfilled.

Description

technical field [0001] The invention relates to a liquid crystal display with low cost and strong astigmatism ability, in particular to a light diffusion film, a backlight module with the light diffusion film and a liquid crystal display. Background technique [0002] Liquid crystal display (LCD) is a flat and ultra-thin display device, which has the advantages of low radiation, low power consumption and small size, so it is widely used in the field of display production for TVs, computers, mobile phones, etc. However, the biggest disadvantage of traditional LCD is its narrow viewing angle. When viewed from a certain angle, the brightness of the LCD will be drastically lost (darkened) and discolored. Especially for older LCD monitors, there is usually only a 90° viewing angle, that is, 45° on the left and right sides. This problem means that multiple viewers will not be able to view the display screen at the same time. At present, people have higher and higher requirements...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/08F21S8/00G02F1/13357
Inventor 宋晓龙陈昭远
Owner JIANGSU HECHENG DISPLAY TECHCO
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