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Heat dissipating device, back light module and displaying device of back light module

A backlight module and heat dissipation device technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as inability to meet demand, low heat dissipation performance, and rising heat dissipation demand.

Inactive Publication Date: 2018-05-15
HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of the improvement in resolution, brightness or color gamut, it means that the power consumption of the light source has increased, resulting in a significant increase in heat dissipation requirements.
In the past, the heat dissipation performance required by the light source was relatively low, and only passive radiation heat dissipation was required (capacity density <0.1W / MM). However, with the increase in image quality, passive heat dissipation can no longer meet the demand

Method used

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  • Heat dissipating device, back light module and displaying device of back light module
  • Heat dissipating device, back light module and displaying device of back light module
  • Heat dissipating device, back light module and displaying device of back light module

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Embodiment Construction

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention discloses a heat dissipating device, a back-light module and a displaying device of back light module. The heat dissipating device includes a heat sink used to install light source, on one side of which a heat sink shroud is formed. Each side of the heat sink shroud is provided with a gas inlet and a gas outlet. The outlet of a constant-flow fan is in correspondence with the gas inlet of the heat sink shroud. The backlight dissipation structure of the back-light module adopts a cross flow fan capable of guiding airflow into the heat sink shroud to remove heat and achieve the aimof active cooling.

Description

technical field [0001] The present application relates to the technical field of displays, in particular to a heat dissipation device for a backlight module, a backlight module and a display device. Background technique [0002] A liquid crystal display device generally includes a backlight module and a liquid crystal display panel stacked together. The liquid crystal display panel itself does not emit light and requires the backlight module to provide backlight for display. As a typical point light source device, a light emitting diode (LED) is often used as a key component in a backlight module. One of the more commonly used is to use a plurality of light emitting diodes as a point light source array to be arranged on the surface of a printed circuit board (PCB) to form a light bar of light emitting diodes (Light Bar). A plurality of light-emitting diodes emit light under the driving action of the printed circuit board to form a strip-shaped light source, and then change ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
CPCG02F1/1336G02F1/133603G02F1/133628H05K7/20972
Inventor 李德华俞刚
Owner HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD