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Backlight module and LCD

A backlight module and light source technology, which is applied in the direction of instruments, optics, nonlinear optics, etc., can solve the problem that the thickness of the backlight module cannot be further reduced, and achieve the effect of reducing the thickness and the number of layer structures

Pending Publication Date: 2018-05-25
CHONGQING ZHONGGUANGDIAN DISPLAY TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the thickness of the existing backlight module cannot be further reduced, the present invention provides a new backlight module and a liquid crystal display using the aforementioned backlight module

Method used

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  • Backlight module and LCD

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Embodiment Construction

[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] figure 1 is a schematic cross-sectional view of the backlight module provided in the embodiment. Such as figure 1 As shown, the backlight module used in this embodiment includes a light source 11 , a diffusion plate 12 , a reflection plate 13 and a diffuse reflection layer 14 .

[0026] The diffuser plate 12 and the reflector plate 13 are laminated and arranged in close contact; the reflector plate 13 is provided with a concave curved surface facing the light-incident surface of the diffuser plate 12, and the surface of the concave curved surface is a diffuse reflection surface. An accommodating cavity is formed between the concave curved surface and the light-incident surface of the diffuser plate 12; the light source 11 is arranged in the accommodating cavity and attached to the light-incident surface of the diffuser plate 12; the l...

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Abstract

The invention provides a backlight module and an LCD, wherein the backlight module comprises a light source, a diffusion plate and a reflection plate; the reflection plate is attached to the light-insurface side of the diffusion plate; the reflection plat comprises a concave curved surface which faces the light-in surface side of the diffusion plate and is a diffuse reflection surface; an accommodation cavity is formed between the concave curved surface and the light-in surface of the diffusion plate; the light source is arranged in the accommodation cavity and attached to the incident lightsurface of the diffusion plate; light sent by the light source is cast to the concave curved surface. With the adoption of the backlight module, the light source is directly arranged on the back surface of the diffusion plate, the light is reflected by a diffuse reflection layer, and the incident light to the diffusion late is uniform. Compared with the backlight modules in the prior art, a lightguide plate is not required, the thickness and the layer structure numbers of the backlight module are reduced.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a backlight module and a liquid crystal display using the aforementioned backlight module. Background technique [0002] The liquid crystal display uses the change of the state of the liquid crystal to control the luminous flux incident from the side of the backlight module to realize the change of the displayed content. In practical applications, the consistency of light intensity at various places in the backlight module affects the quality of the liquid crystal display, especially the color consistency of the same color when all parts of the liquid crystal display are lit. It is an important direction for improving the quality of liquid crystal displays. [0003] Based on the consideration of the consistency of the emitted light from the backlight module, the backlight modules currently used by most manufacturers are edge-light backlight modules. This type of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/133605G02F1/133606
Inventor 苏海龙
Owner CHONGQING ZHONGGUANGDIAN DISPLAY TECH CO LTD
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