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A kind of manufacturing method of white light led and white light led

A production method and technology of white light, which is applied in the field of white light LED and white light LED production, can solve the problems of low production efficiency and cumbersome and lengthy process of white light LED, achieve miniaturization and integration, improve luminous efficiency, and reduce light loss Effect

Active Publication Date: 2017-03-08
HC SEMITEK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of cumbersome and lengthy processes in the prior art and low production efficiency of white LEDs, embodiments of the present invention provide a method for manufacturing white LEDs and white LEDs.

Method used

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  • A kind of manufacturing method of white light led and white light led
  • A kind of manufacturing method of white light led and white light led
  • A kind of manufacturing method of white light led and white light led

Examples

Experimental program
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Embodiment 1

[0035] An embodiment of the present invention provides a method for manufacturing a white light LED, see figure 1 , the production method includes:

[0036] Step 101: forming an array of photosensitive colloid bumps on the substrate, each photosensitive colloid bump doped with phosphor.

[0037] Among them, the photosensitive colloid refers to the colloid that absorbs light energy and changes its chemical properties under light conditions, such as a positive photoresist, and the part of the positive photoresist that is irradiated by light absorbs light energy and changes its chemical properties. The alkaline solution reacts, and the chemical properties of the part of the positive photoresist that is not irradiated by light remain unchanged, and cannot react with the alkaline solution.

[0038] Figure 2a It is a schematic structural diagram of the LED obtained after step 101 is performed. Wherein, 1 represents the substrate, and 2 represents the array of photosensitive coll...

Embodiment 2

[0083] An embodiment of the present invention provides a white light LED, see image 3 , the white light LED can be manufactured by using the manufacturing method provided in Embodiment 1.

[0084] Specifically, the white light LED includes a substrate 1, an array 2 of photosensitive colloid bumps stacked on the substrate 1 in sequence, an AlN film 3, an N-type layer 4, a light-emitting layer 5, a P-type layer 6, a metal reflective layer 7, and The P electrode 8 disposed on the metal reflective layer 7 and the N electrode 9 disposed on the N-type layer 4 . Wherein, each photosensitive colloid bump ( image 3 Indicated by the figure connected by three petals) is mixed with phosphor ( image 3 Indicated by a circle), the photosensitive colloid bump is separated from the AlN film 3, and the white LED is provided with a groove extending from the P-type layer 6 to the N-type layer 4.

[0085] In this embodiment, the N-type layer 4 may be an N-type GaN layer, and the P-type layer...

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Abstract

The invention discloses a manufacturing method of a white light LED and the white light LED, belonging to the technical field of semiconductors. The method includes: forming an array of photosensitive colloid bumps on a substrate, each of the photosensitive colloid bumps doped with phosphor; forming an AlN film on the array and the substrate, and the photosensitive colloid During the process of forming the AlN film, the bump is shrunk by heat and separated from the AlN film; an N-type layer, a light-emitting layer, and a P-type layer are sequentially grown on the AlN film; The P-type layer extends to the groove of the N-type layer; a metal reflective layer is formed on the P-type layer; a P electrode is set on the metal reflective layer, and an N electrode is set on the N-type layer. The invention omits the process of coating fluorescent powder in the packaging process after making the LED chip, the process is simple and convenient, and the production efficiency of the white light LED is improved.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a method for manufacturing a white light LED and the white light LED. Background technique [0002] A light emitting diode (Light Emitting Diode, referred to as LED) is a semiconductor light emitting device, which is widely used in indicator lights, display screens and the like. White light LED is the third generation of electric light source after incandescent lamp and fluorescent lamp. The energy consumption of white light LED is only one-eighth of incandescent lamp, one-half of fluorescent lamp, and its life span can be as long as 100,000 hours. It can be described as "once and for all". [0003] A current manufacturing method of a white light LED includes: manufacturing an LED chip; fixing the LED chip on a bracket; blending polydimethylsilicone and a curing agent for LED packaging according to a first predetermined ratio to form a powder compound; 2. Blending phosph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50H01L33/46
CPCH01L33/005H01L33/46H01L33/502H01L2933/0025H01L2933/0041
Inventor 尹灵峰谢鹏韩涛徐谨张威王江波刘榕
Owner HC SEMITEK CORP