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Light-emitting device and backlight module

A light-emitting device and backlight module technology, applied in the direction of lighting devices, fixed lighting devices, components of lighting devices, etc., can solve the problems of not bright display colors and insufficient display color gamut

Active Publication Date: 2014-10-15
江苏沃达视听科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The white light of LED dot matrix or cold-cathode tube is generally mixed by exciting phosphor powder, but this will cause the display using this backlight module to have defects such as insufficient display color gamut and not bright display colors.

Method used

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  • Light-emitting device and backlight module
  • Light-emitting device and backlight module

Examples

Experimental program
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Embodiment Construction

[0015] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] see figure 1 , the light emitting device 100 provided by the first embodiment of the present invention includes a laser light source 10 , a reflector 20 , an optical lens 30 and a diverging lens 40 .

[0017] The laser light source 10 is used to emit collimated white light mixed with green, red and blue primary color light. Specifically, see figure 2 , the laser light source 10 includes a first laser unit 11 , a second laser unit 12 , a third laser unit 13 , a first mirror 14 and a second mirror 15 . The first laser unit 11 , the second laser unit 12 and the third laser unit 13 are respectively used to emit light of three primary colors. In this embodiment, the first laser unit 11 emits green light, the second laser unit 12 emits red light, and the third laser unit 13 emits blue light.

[0018] The first laser unit 11 , the seco...

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PUM

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Abstract

The invention relates to a light-emitting device. The light-emitting device comprises a laser light source, an optical lens and a diverging lens, wherein the laser light source is used for sending out collimation white light formed by mixing light rays of three-primary colors of green, red and blue; the optical lens is used for receiving the collimation white light so as to convert the collimation white light into divergent light to be emitted; the diverging lens is positioned in the light emission direction of the optical lens and is aligned to the optical lens, the distance between the diverging lens and the optical lens is greater than the focal distance of the optical lens, and the diverging lens is used for receiving and further diverging the divergent light emitted by the optical lens. The invention further relates to a backlight module with the light-emitting device.

Description

technical field [0001] The invention relates to a light emitting device and a backlight module including the light emitting device. Background technique [0002] The backlight module provides a white light source for the liquid crystal display, and the white light source in the direct-lit backlight module generally consists of more light sources, such as LED dot matrix or cold cathode tubes. White light from LED dot matrix or cold-cathode tubes is usually mixed by exciting phosphors, but this will cause the display using the backlight module to have defects such as insufficient display color gamut and not bright display colors. Contents of the invention [0003] In view of this, it is necessary to provide a light emitting device and a backlight module capable of widening the display color gamut of the display and making the display colorful. [0004] A light emitting device includes a laser light source, an optical lens and a diverging lens. The laser light source is use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V5/04
Inventor 陈柏洲
Owner 江苏沃达视听科技有限公司
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