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Backlight module and liquid crystal display device using same

A backlight module and liquid crystal display panel technology, applied in lighting and heating equipment, semiconductor devices of light-emitting elements, optics, etc., can solve problems such as uneven light distribution

Active Publication Date: 2016-03-09
QINGDAO HAIER ELECTRONICS +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, since the light-emitting unit is arranged on the back plate facing the light-transmitting plate, it is easy to make the light distribution on the light-transmitting plate uneven

Method used

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  • Backlight module and liquid crystal display device using same
  • Backlight module and liquid crystal display device using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Hereinafter, taking a liquid crystal display of a television as an example, a specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0025] figure 1 is a cross-sectional view of a liquid crystal display, figure 2 for figure 1 Enlarged image at A. For the convenience of description, in the following description, the side close to the liquid crystal display panel is called the front (or upper side), and the side away from the liquid crystal display panel is called the back side (or lower side). The side facing the user of the liquid crystal display panel is called the main viewing surface, the upper (lower) direction corresponding to the main viewing surface is called the upper (lower) side, and the left (right) direction corresponding to the main viewing surface is called the left (right) side. )side. In addition, in this embodiment, the back plate and the reflective unit are arranged in close contact,...

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PUM

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Abstract

The invention provides a backlight module which has no light guide plate and is even in brightness and a liquid crystal display device utilizing the backlight module. The backlight module comprises a back plate used for supporting, a reflection unit and a light scattering unit, wherein the reflection unit and the light scattering unit are arranged on the back plate in sequence. A concave cambered face concaving towards the back plate side is formed on one face, opposite to the reflection unit, of the back plate. The reflection unit is tightly attached to the concave cambered face, and a cavity is formed between the reflection unit and the light scattering unit. A luminous unit which provides incident rays for at least the reflection unit is arranged on the end face of the cavity.

Description

technical field [0001] The invention relates to a backlight module and a liquid crystal display device using the backlight module. Background technique [0002] Currently, liquid crystal displays (LCDs) are very common displays, and are widely used in portable electrical products such as computers, mobile phones, and PDAs due to their advantages of power saving and portability. [0003] The structure of a traditional liquid crystal display generally installs a backlight module on the back of the liquid crystal display panel. The side is provided with a lampshade and a lamp tube. The light emitted by the lamp tube is turned by the function of the light guide plate and the reflection plate and is incident on the lower diffusion sheet, and then the incident light passes through the lower diffusion sheet, the prism sheet and the upper diffusion sheet in sequence and is incident on the liquid crystal display panel. Among them, the light guide plate is a crucial optical componen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V13/04G02F1/13357F21Y115/10
Inventor 喻子达肖维春胡厚铭王媛媛
Owner QINGDAO HAIER ELECTRONICS