LED (Light Emitting Diode) light source, manufacturing method thereof and backlight module

A backlight module, LED chip technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of high backlight cost, low input bin rate light acceptance rate, poor light color consistency, etc., to improve light color. Consistency, improve the Bin rate, increase the effect of light reflection area

Active Publication Date: 2017-07-07
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light color consistency of the four sides of the existing LED light source is poor, and the bin rate of LED (i.e. the light acceptance rate) is low, resulting in high cost of the backlight based on the LED light source.

Method used

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  • LED (Light Emitting Diode) light source, manufacturing method thereof and backlight module
  • LED (Light Emitting Diode) light source, manufacturing method thereof and backlight module
  • LED (Light Emitting Diode) light source, manufacturing method thereof and backlight module

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions of each exemplary embodiment provided by the present invention with reference to the accompanying drawings in the embodiments of the present invention. In the case of no conflict, the following embodiments and technical features thereof can be combined with each other.

[0024] see figure 1 , is an LED light source according to an embodiment of the present invention. The LED light source 10 includes a substrate 11 , an LED chip 12 fixed on the substrate 11 , fluorescent glue 13 and a white light reflection layer 14 . The substrate 11 may be sapphire. The LED chip 12 is a flip chip provided with a metal electrode 121 , which is connected to electricity through the metal electrode 121 and emits blue light. The fluorescent glue 13 wraps and packages the LED chip 12 on the substrate 11 , and the fluorescent glue 13 has a rectangular structure as a whole, so that the packaged LED light source 10 ha...

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Abstract

The invention provides an LED (Light Emitting Diode) light source, a manufacturing method thereof and a backlight module. The LED light source comprises a substrate, an LED chip, fluorescent glue and a white-light reflecting layer, wherein the LED chip is coated and packaged on the substrate by the fluorescent glue; the white-light reflecting layer is used for reflecting light outgoing from the fluorescent glue to the white-light reflecting layer; and the forward projection of the fluorescent glue on the substrate is positioned in the forward projection of the white-light reflecting layer on the substrate. Based on the design, the light-color consistency of light emitted from the four surfaces can be improved, the incoming Bin rate of the LED can be improved and the backlight cost can be reduced.

Description

technical field [0001] The invention relates to the display field, in particular to an LED (Light Emitting Diode, light emitting diode) light source, a manufacturing method thereof, and a backlight module. Background technique [0002] Four side emission (Four side emission) type LED is a light source composed of a fluorescent glue (phosphor powder colloid layer) and a white light reflection layer coated on a flip chip (Flip Chip). The illuminated area of ​​the LED light source on the diffusion plate forms a rectangular light-emitting surface, which not only has the advantages of small size and high driving power, but also can achieve a good local dimming effect, thereby improving the HDR (High-Dynamic Range, High Dynamic Light Rendering) display quality. However, the light color uniformity of the four sides of the existing LED light source is poor, and the binning rate of the LED (that is, the light acceptance rate) is low, resulting in a high cost of the backlight based o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335H01L33/52H01L33/60
Inventor 樊勇萧宇均张简圣哲
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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