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Backlight module capable of fine-tuning chromaticity and light mixing method thereof

A technology of backlight module and chromaticity, which is applied in the field of light source structure and light mixing, can solve the problems of high cost and complex driving circuit design, and achieve the effect of low cost

Inactive Publication Date: 2010-11-03
苏州向隆塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the design of the driving circuit is complicated and the cost is high

Method used

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  • Backlight module capable of fine-tuning chromaticity and light mixing method thereof
  • Backlight module capable of fine-tuning chromaticity and light mixing method thereof
  • Backlight module capable of fine-tuning chromaticity and light mixing method thereof

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0022] In the present invention, a plurality of white light LEDs are arranged on at least one side of the light guide plate, and the white light LEDs include more than two kinds of different chromaticities. When the current is flowing, white LEDs of different chromaticities produce different light colors and enter the light guide plate, and form mixed light in the light guide plate. In addition, by controlling the magnitude of the current, the chromaticity can be changed, and the chromaticity is in a specific range. Fine-tuning changes within the chromaticity range (for example, between the white LEDs of different chromaticities).

[0023] One of the technical means of the present invention is to arrange a plurality of white LEDs on one side of a light guide plate, the white LEDs include two different chromaticities, the first chromaticity white...

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PUM

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Abstract

The invention relates to a backlight module capable of fine-tuning chromaticity and a light mixing method thereof. In the invention, the backlight module comprises a light guide plate and a plurality of white light LEDs. The plurality of white light LEDs are arranged on the side edges of the light guide plate and are used for projecting rays to enter the light guide plate; the white light LEDs comprise two or more different chromaticity, and the white light LEDs with the same chromaticity are combined into a group and respectively connected with a separate circuit loop; the white light LEDs with the different chromaticity respectively generate different light colors which are emitted into the light guide plate when the current is introduced, and the mixed light is formed in the light guide plate, and the light color is fine-tuned to change between the specific chromaticity through controlling electrical flow quantity. The invention has the advantages of fine-tuning the chromaticity or the color temperature and having low cost.

Description

technical field [0001] The invention relates to a backlight module which can be applied to displays such as liquid crystal televisions, computers, mobile phones, etc. as a light emitting device, in particular to a light source structure of the backlight module and a light mixing method thereof. Background technique [0002] For some electronic products, whether the operation interface can emit light is not only related to the lighting effect, but also related to the added value of visual appearance and texture. The operation interface with a luminous effect usually includes a backlight module. The structure of the backlight module mainly includes a light guide plate and at least one light source. The light guide plate includes a light exit surface and at least one light entrance surface. As the light incident surface, or the side of the light guide plate can be used as the light incident surface, and a light source can be installed on the light incident surface; the front of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V23/00F21V8/00G02F1/13357H05B37/02G09G3/36F21Y101/02
Inventor 蔡宗霖
Owner 苏州向隆塑胶有限公司