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Side light type backlight module and its operation method

The technology of a backlight module and operation method is applied in the field of side-light backlight module and its operation, and can solve problems such as temperature unevenness, light guide plate warping, difference in power density and heat dissipation capacity, etc.

Active Publication Date: 2009-02-18
AU OPTRONICS CORP
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0004] 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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  • Side light type backlight module and its operation method
  • Side light type backlight module and its operation method
  • Side light type backlight module and its operation method

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Embodiment Construction

[0045] 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.

[0046] 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.

[0047] 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

Disclosed are a sidelight type backlight module and the operation method thereof; wherein, the sidelight type backlight module comprises a light guide plate and a plurality of LED light sources. The light guide plate includes a light input lateral side and a light output surface. The LED light sources are arranged on the light input lateral side; an interval is maintained between each two adjacent LED light sources; wherein, the LED light sources are arranged with unequal intervals. The sidelight type backlight module can prevent the uneven temperature problem, have no influence on the optical quality and prevent the warping phenomenon of the light guide plate.

Description

technical field [0001] 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 [0002] 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 diodes have the advantages of small size, long life, low driving voltage, low power consumption, and good shock resistance. [0003] Generally speaking, in an edge-lit backlight module, a plurality of LED light sources are assembled by using a printed circu...

Claims

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Application Information

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IPC IPC(8): F21V8/00F21V19/00G02B6/00F21Y101/02F21Y105/12F21Y115/10
Inventor 吴有章林信吾柯雅华
Owner AU OPTRONICS CORP
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