Unlock instant, AI-driven research and patent intelligence for your innovation.

Dorsal-direction-type white light emitting diode

A technology of light-emitting diodes and white light, which is applied in the manufacture of electrical components, electrical solid devices, semiconductor/solid devices, etc., can solve the problems of phosphor degradation, chip heating, etc., achieve improved performance, prolong service life, and increase light extraction efficiency. Effect

Inactive Publication Date: 2012-10-10
SHANXI FEIHONG MICRO NANO PHOTOELECTRONICS SCI & TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a back-facing white light emitting diode in order to solve the problem that the existing white light emitting diode is easily deteriorated due to chip heating during use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dorsal-direction-type white light emitting diode
  • Dorsal-direction-type white light emitting diode
  • Dorsal-direction-type white light emitting diode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The back-facing white light emitting diode includes a circuit board 1; the upper surface of the circuit board 1 is respectively fixed with an external positive electrode metal 9 and an external negative electrode metal 10; the lower surface of the circuit board 1 is provided with a concave cavity; the circuit board 1 is provided with a transparent circuit Board 6, and the edge of the upper surface of the transparent circuit board 6 is fixed to the edge of the cavity; the cavity is embedded with a reflector 2; the reflector 2 is embedded with an epoxy resin cover 4; A fluorescent powder layer 3 is coated between the outer surfaces of the epoxy resin cover 4; the edges of the reflector 2 and the upper edge of the epoxy resin cover 4 are fixed to the upper surface edge of the transparent circuit board 6; the transparent circuit board 6 The upper surface of the upper surface is respectively fixed with a light-emitting diode chip 5, an inner positive electrode metal 11, and a...

Embodiment 2

[0019] The back-facing white light emitting diode includes a circuit board 1; the upper surface of the circuit board 1 is respectively fixed with an external positive electrode metal 9 and an external negative electrode metal 10; the lower surface of the circuit board 1 is provided with a concave cavity; the circuit board 1 is provided with a transparent circuit Board 6, and the edge of the upper surface of the transparent circuit board 6 is fixed to the edge of the cavity; the cavity is embedded with a reflector 2; the reflector 2 is embedded with an epoxy resin cover 4; A fluorescent powder layer 3 is coated between the outer surfaces of the epoxy resin cover 4; the edges of the reflector 2 and the upper edge of the epoxy resin cover 4 are fixed to the upper surface edge of the transparent circuit board 6; the transparent circuit board 6 The upper surface of the upper surface is respectively fixed with a light-emitting diode chip 5, an inner positive electrode metal 11, and a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a light emitting diode and especially relates to a dorsal-direction-type white light emitting diode. During using the current white light emitting diode, a problem of phosphor deterioration caused by heating of a chip is easily generated. By using the white light emitting diode of the invention, the above problem can be solved. The dorsal-direction-type white light emitting diode comprises a circuit board. An externally-connected positive electrode metal and an externally-connected negative electrode metal are fixed on an upper surface of the circuit board respectively. A lower surface of the circuit board is provided with a concave cavity. The circuit board is provided with a transparent circuit board. An upper surface edge of the transparent circuit board is fixed with the edge of the concave cavity. The concave cavity is embedded with a reflector. The reflector is embedded with an upper surrounded epoxy resin cover. A phosphor layer is coated between an inner surface of the reflector and the external surface of the upper surrounded epoxy resin cover. The dorsal-direction-type white light emitting diode of the invention is based on a brand new structure and the problem of the phosphor deterioration caused by the heating of the chip during using the current white light emitting diode can be effectively solved. The white light emitting diode of the invention is suitable for the following fields, such as a mobile phone, backlight of a PDA product, an information and consumption electron product and the like.

Description

technical field [0001] The invention relates to a light-emitting diode, in particular to a back-facing white light-emitting diode. Background technique [0002] As the luminosity of light-emitting diodes increases year by year, light-emitting diodes have been widely used in various products in life, such as mobile phones, backlights of PDA products, information and consumer electronics products. Among them, white light-emitting diodes are the most promising light-emitting diodes. The structure of the existing white light diode usually includes a circuit board 1, an epoxy resin cover 4 around it, a light-emitting diode chip 5, an externally connected positive electrode metal 9, and an externally connected negative electrode metal. Its light-emitting principle is: when the light-emitting diode chip is excited by electric energy, electrons and holes are generated, and the electrons and holes combine with each other to emit the first emitted light (such as blue light); the firs...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/50
Inventor 许并社李学敏刘旭光
Owner SHANXI FEIHONG MICRO NANO PHOTOELECTRONICS SCI & TECH