Backlight module and liquid crystal display

A liquid crystal display and backlight module technology, which is applied in the fields of instruments, optics, nonlinear optics, etc., can solve the problems of affecting the improvement of LCD display quality, short light transmission path, uneven brightness of the backlight module 20, etc., and achieves great improvement. Viewing angle display quality, the effect of improving uniformity
CN107340646AInactive Publication Date: 2017-11-10TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Publication Date
2017-11-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a backlight module and a liquid crystal display. The backlight module comprises a back plate, a light source arranged on the back plate, and a fluorescent film arranged above the light source, and fluorescent particles are distributed in the fluorescent film and are used for scattering light emitted by an LED, wherein the distribution density of the fluorescent particles gradually decreases from the center to the periphery of an area in the area of each LED corresponding to the fluorescent film. Based on the backlight module, the uniformity of brightness of emergent light of the backlight module is improved, and the large viewing angle display quality of an LCD is improved.
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Description

technical field

[0001] The invention relates to the display field, in particular to a backlight module and a liquid crystal display. Background technique

[0002] The backlight module usually uses LED (Light Emitting Diode, light emitting diode) as the light source, for example figure 1 As shown, in the direct-lit backlight module 10, the light emitted by the light source 11 is diffused by a diffuser plate (Diffuser plate, DP) 12 and transmitted upwards, and then diffused and integrated by various optical films 13 to form a uniform Surface light source, and provided to the liquid crystal panel of LCD (Liquid Crystal Display, liquid crystal display). Wherein, although the prism sheet (BEF, Brightness Enhancement Film) in the optical film 13 can increase the display brightness of the LCD, its light concentrating effect will reduce the display viewing angle of the LCD, for example, at 1 / 3 brightness (1 / 3 of the brightness of the front viewing angle). 3) When the display viewi...

Claims

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