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Luminous element

A technology of light-emitting components and light source devices, which is applied in the direction of electrical components, semiconductor devices, circuits, etc., and can solve the problems of inability to fully utilize the light-emitting area of ​​the active layer, uneven distribution, and affecting the luminous efficiency of light-emitting diodes

Active Publication Date: 2010-03-17
EPISTAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the electrode has only a small part of the contact with the epitaxial light-emitting stack, the current is easily confined to the area of ​​the contacted part, causing the current to flow from the electrode into the active layer in the epitaxial light-emitting stack, only concentrated at the position directly below the electrode, As a result, the distribution in the horizontal direction is not uniform, and the light-emitting area of ​​the active layer cannot be fully utilized, which affects the luminous efficiency of the light-emitting diode.

Method used

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Embodiment Construction

[0043] figure 1 Shown is a horizontal LED element 10 according to a first embodiment of the present invention. The light emitting diode element 10 includes: a substrate 19, and the second cover layer 13, the active layer 12, the first cover layer 11, and an anisotropic conductive layer 14, the anisotropic conductive layer 14 and the second cover layer There are a first electrode 15 and a second electrode 16 on the top of 13 . The above-mentioned first covering layer 11 and the second covering layer 13 may be semiconductor layers with different electrical properties formed by Group III and Group V semiconductors or Group II and Group VI semiconductors; the active layer 12 may be a multiple quantum well structure (Multi- Quantum Well) layer; the substrate 19 can be a sapphire (Sapphire) substrate.

[0044] The above-mentioned anisotropically conductive layer (Anisotropically Conductive Layer) 14 may be a conductive layer with different conductivity in the horizontal and vertic...

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Abstract

The invention discloses a luminous element, a backlight module device and a lighting device. The luminous element comprises a first covering layer, a second covering layer, an active layer positionedbetween the first covering layer and the second covering layer, an anisotropic conductive layer positioned on the first covering layer and the second covering layer, and an electrode arranged on the anisotropic conductive layer. The structural design of the luminous element can enable current input through the electrode to be evenly dispersed to the whole luminous element under the action of the anisotropic conductive layer so as to improve luminous efficiency.

Description

technical field [0001] The invention relates to a light-emitting element, especially a light-emitting diode element with an anisotropic conductive layer. Background technique [0002] Light-emitting diodes (Light-emitting Diodes; LEDs) are manufactured using the principle that when electrons and holes of semiconductor materials are combined, the energy changes generated by the energy level transition of semiconductor materials are used to release light. [0003] Due to the advantages of small size, long life, low driving voltage, low power consumption, fast response, and good shock resistance, light-emitting diodes are widely used in fields such as automobiles, computers, communications, and consumer electronics. [0004] The structure of a general light-emitting diode has an epitaxial light-emitting stack, which includes a first covering layer, an active layer and a second covering layer, wherein the active layer is located between the first covering layer and the second co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/00
Inventor 许嘉良黄建富
Owner EPISTAR CORP