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Method for operating side-lighting type backlight module

A method of operation and technology of a backlight module, applied in the semiconductor devices, optics, light guides and other directions of light-emitting elements, can solve the problems of warpage of the light guide plate, differences in power density and heat dissipation capacity, and high temperature

Active Publication Date: 2010-06-09
AU OPTRONICS CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In this way, the power density and heat dissipation capacity of different positions will be different, resulting in uneven or overheating problems, which will not only affect the optical quality, cause the light guide plate to warp, but also easily cause reliability problems between products and other components

Method used

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  • Method for operating side-lighting type backlight module
  • Method for operating side-lighting type backlight module
  • Method for operating side-lighting type backlight module

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Embodiment Construction

[0046] In order to make the description of the present invention more detailed and complete, reference may be made to the attached drawings and various embodiments described below, and the same numbers in the drawings represent the same or similar elements. On the other hand, well-known elements and steps have not been described in the embodiments in order to avoid unnecessary limitations of the invention.

[0047] One embodiment of the present invention is an edge-lit backlight module. The side-light backlight module can be widely used in displays, or in other similar technical links. The following will match Figure 1 to Figure 3 The implementation of the edge-lit backlight module will be described in detail.

[0048] Generally speaking, for a side-lit backlight module with light incident from one side, a plurality of LED light sources on the light incident side of the light guide plate are arranged with a pitch. However, this will cause temperature unevenness on the ligh...

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Abstract

The invention discloses a method for operating a side-lighting type backlight module. The side-lighting type backlight module comprises a light guide plate and a plurality of light-emitting diode light sources, wherein the light guide plate is provided with a light-incidence side surface, and the plurality of light-emitting diode light sources are arranged on the light-incidence side surface. The operating method is characterized by driving the plurality of light-emitting diode light sources so that the light-emitting diode light sources have different powers. The invention can solve the problem of nonuniform temperature, and prevent the warping phenomenon of light guide plate without influencing the optical quality.

Description

[0001] This application is a divisional application of an invention patent application with an application date of October 13, 2008, an application number of 200810170171.3, and an invention title of "side-light backlight module and its operating method". technical field [0002] The invention relates to a backlight module and its operating method, in particular to an edge-light backlight module and its operating method. Background technique [0003] The operating principle of the side-lit backlight module is to guide the light from the side light source into a flat light source through the light guide plate to ensure uniformity of brightness. Commonly used backlight sources for edge-lit backlight modules include cold cathode fluorescent lamps and light-emitting diodes, for example. Although cold cathode fluorescent lamps are currently the mainstream, the demand for light-emitting diodes is increasing day by day. Compared with cold-cathode fluorescent lamps, light-emitting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02F21S8/00F21V8/00F21Y101/02F21Y105/12F21Y115/10
Inventor 吴有章林信吾柯雅华
Owner AU OPTRONICS CORP
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