Light-emitting device

Abstract

The invention discloses a light-emitting device, containing a light-emitting lamination, a patterned dielectric layer, a first reflecting electrode and a barrier layer, wherein the light-emitting layer contains a first surface; the patterned dielectric layer is formed on a first surface of the light-emitting lamination and contains a first part and a second part, the second part roughly surroundsthe first part and has the same thickness of the first part; the first reflecting electrode covers the first part of the patterned dielectric layer, and the barrier layer covers the first reflecting electrode and the second part of the patterned dielectric layer.

Description

[0001] This application is a divisional application of a Chinese invention patent application (application number: 201310659242.7, application date: December 6, 2013, invention name: light emitting device). technical field [0002] The invention relates to a light-emitting device, in particular to a light-emitting device in which a light-emitting laminate is located on a conductive substrate. Background technique [0003] The light-emitting principle of a light-emitting diode (LED) is that electrons move between n-type semiconductors and p-type semiconductors to release energy. Because the light emitting principle of light emitting diodes is different from that of incandescent lamps that heat filaments, light emitting diodes are also called cold light sources. Furthermore, light-emitting diodes have better environmental tolerance, longer service life, lighter weight and portability, and lower power consumption so that they can be considered as another choice of light source ...

AI Technical Summary

Problems solved by technology

The advantages of vertical light-emitting diodes are that the electrodes have less shading area, good heat dissipation, and no additional etching and epitaxial manufacturing process. However, the conductive substrate currently used to grow epitaxy has the problem of easily absorbing light, which affects the luminous efficiency of light-emitting diodes.

The advantage of horizontal light-emitting diodes is that the insulating substrate is usually a transparent substrate, and light can be emitted from all directions of the light-emitting diode. However, there are also disadvantages such as poor heat dissipation, large electrode shading area, and epitaxial etching process loss of light-emitting area.

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