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Light source module, backlight module and liquid crystal display device

A light source module and backlight module technology, which is applied in the field of backlight modules, liquid crystal display devices, and light source modules, and can solve problems such as poor heat dissipation of side-light backlight modules

Inactive Publication Date: 2014-07-02
SYNERGY OPTOELECTRONICS SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor heat dissipation of edge-lit backlight modules in the prior art, it is necessary to provide a light source module with better heat dissipation

Method used

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  • Light source module, backlight module and liquid crystal display device
  • Light source module, backlight module and liquid crystal display device
  • Light source module, backlight module and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] see figure 1 , is a three-dimensional exploded schematic view of the backlight module of the present invention. The backlight module 20 includes a light source module 21 , a light guide plate 22 , a reflection sheet 23 and a frame (not shown in the figure), and the frame accommodates the light source module 21 , the light guide plate 22 , and the reflection sheet 23 therein.

[0045] The light source module 21 includes a light strip 211 , a semiconductor cooling chip 215 and a heat dissipation backplane 216 . see figure 2 A galvanic couple composed of an N-type semiconductor and a P-type semiconductor connected in series is sandwiched between two ceramic sheets to form a semiconductor cooling sheet 215 . When the direct current passes through the galvanic couple of the N-type semiconductor and the P-type semiconductor sandwiched between the two ceramic sheets of the semiconductive cooling plate 215, heat is absorbed and released at both ends of the galvanic couple re...

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PUM

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Abstract

The invention provides a light source module, a backlight module and a liquid crystal display device. The light source module comprises a heat-radiation backboard and a light emitting strip, wherein the light emitting strip comprises a printed circuit board and a plurality of light-emitting diodes arranged on the printed circuit board. The light source module is characterized by further comprising a semiconductor chilling plate, the semiconductor chilling plate is arranged between the printed circuit board and the heat-radiation backboard, and forms a cold end and a hot end when powered on with direct current, the cold end makes contact with the printed circuit board directly or through a heat-conduction element to absorb the heat generated when the light-emitting diodes emit light, and the hot end of the semiconductor chilling plate makes contact with the heat-radiation backboard directly or through a heat-conduction element to transfer the heat radiated by the hot end of the semiconductor chilling plate to the heat-radiation backboard.

Description

technical field [0001] The invention relates to a light source module, a backlight module and a liquid crystal display device. Background technique [0002] Liquid crystal display devices have been widely used in mobile phones, personal digital assistants, notebook computers, personal computers, and televisions due to their low radiation, small size, and low power consumption. Since the liquid crystal panel itself of the liquid crystal display device does not have light-emitting characteristics, in order to achieve the display effect, it is necessary to provide the liquid crystal panel with a backlight module to provide the liquid crystal panel with sufficient brightness and evenly distributed plane light, thereby realizing the display of the liquid crystal display device. Features. [0003] Usually, the backlight module mainly includes a light guide plate, a light source, a reflector and one or more optical films. The light source is usually a point light source or a line...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V29/00G02F1/13357F21Y101/02F21V29/54F21Y115/10
Inventor 宋岁忙方建中
Owner SYNERGY OPTOELECTRONICS SHENZHEN