White LED and preparation method thereof

A production method and white light technology, applied in electrical components, circuits, semiconductor devices, etc., can solve problems such as affecting the quality of LED light emission, and achieve a comfortable lighting environment.

Active Publication Date: 2018-02-09
ZHUHAI HONGGUANG LIGHTING FIXTURE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The above three methods of obtaining white light LEDs all require the use of phosphor materials, which will degrade during use and affect the luminous quality of LEDs

Method used

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  • White LED and preparation method thereof

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0025] Such as figure ...

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Abstract

The invention discloses a white LED and a preparation method thereof, and relates to the technical field of basic electrical elements and preparation methods thereof. The white LED comprises a substrate layer, a buffer layer, an n-type layer, an active region layer and a p-type layer which are arranged from bottom to top, wherein voltage is added between the p-type layer and the n-type layer, andthe light emitted by the LED is white light; the active region layer comprises an InN layer, an In<x>Ga<1-x>N layer, a GaN layer, an Al<y>Ga<1-y>N layer and AlN which are arranged from bottom to top,wherein x+y=1, 0<=x<=1, 0<=y<=1, and the value of x is gradually reduced from 1 to 0 and the value of y is gradually increased from 0 to 1 in a process that the In<x>Ga<1-x>N layer and the Al<y>Ga<1-y>N layer gradually change from bottom to top. The white LED does not need to use fluorescent powder materials, and the emission spectrum range is wide.

Description

technical field [0001] The invention relates to the technical field of basic electrical components and a preparation method thereof, in particular to a white light LED and a preparation method thereof. Background technique [0002] Under the background of global climate change and energy shortage, saving energy and protecting the environment have become the mainstream of today's era, and the search for high-energy-saving lighting sources has been highly valued. White light-emitting diode (light emitting diode, LED), as a new type of solid-state light source, has great application prospects in the fields of semiconductor lighting, display and visible light communication due to its many advantages such as energy saving, environmental protection, long life and small size. [0003] At present, there are mainly the following ways to realize white LED at home and abroad: [0004] (1) LED chips using ultraviolet-near-ultraviolet light and phosphors that can be excited by ultraviol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/00H01L33/06H01L33/32
CPCH01L33/0066H01L33/0075H01L33/06H01L33/325
Inventor 孟静
Owner ZHUHAI HONGGUANG LIGHTING FIXTURE
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