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LED chip and crystal mixing method

A technology of LED chips and mixed crystals, applied in electrical components, circuits, semiconductor devices, etc., can solve the problem of huge sorting volume, and achieve the effect of improving utilization, stability and efficiency

Active Publication Date: 2020-07-17
东莞市中晶半导体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an LED chip and a crystal mixing method, which are used to solve the problem of the huge amount of sorting of LED chips in the application of LED display screens in the prior art.

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  • LED chip and crystal mixing method

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Effect test

Embodiment 1

[0043] Such as Figure 1 ~ Figure 4 As shown, this embodiment provides an LED chip 10, the LED chip 10 includes an LED body 101, and a first electrode 102 and a second electrode 103 connected to the LED body 101, wherein the first electrode 102 One of the second electrodes 103 is a magnetic electrode, and the magnetic electrode includes stacked magnetic layers and non-magnetic layers. The magnetic layer can be a conductive material that itself has magnetism, or a conductive material that is not magnetic itself but can be magnetized and attracted by a magnetic substance. In this embodiment, the material of the magnetic layer includes Fe single substance layer, One of Co simple substance layer, Ni simple substance layer, Mn simple substance layer, SmCo alloy layer and NdFeB alloy layer. The non-magnetic layer is a conductive material that cannot be magnetized and attracted by a magnetic substance. For example, the material of the non-magnetic layer can be one of Cu, Al, Ag, Au, ...

Embodiment 2

[0060] Such as Figure 5 and Figure 7 As shown, this embodiment also provides a crystal mixing method for LED chips 10, the crystal mixing method specifically includes the following steps:

[0061] Such as Figure 5 As shown, step 1) is first performed to provide a mixed crystal substrate 20, on which there are regularly arranged magnetic units 201, for example, the magnetic units 201 can be small magnets, and the magnetic units 201 are embedded in The mixed crystal substrate 20, preferably, the top surface of the magnetic unit 201 is flush with the surface of the mixed crystal substrate 20, so that the subsequent LED chips 10 can be smoothly adsorbed on the mixed crystal substrate 20. surface. The mixed crystal substrate 20 has a smooth surface, preferably, the material of the mixed crystal substrate 20 may be glass.

[0062] In an implementation process, the magnetic unit 201 on the mixed crystal substrate 20 includes a magnetized magnetic material.

[0063] In another...

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Abstract

The invention provides an LED chip and a crystal mixing method. The LED chip comprises an LED body, a first electrode and a second electrode, one of the first electrode and the second electrode is a magnetic electrode, and the magnetic electrode comprises a magnetic layer and a non-magnetic layer which are stacked. The crystal mixing method comprises the following steps: 1) providing a crystal mixing substrate, wherein regularly arranged magnetic units are arranged on the crystal mixing substrate; 2) mixing the LED chips with various wavelengths, dispersing the mixed LED chips on the crystal mixing substrate, adsorbing magnetic electrodes of the LED chips through a magnetic unit to enable the LED chips to be regularly arranged on the crystal mixing substrate, and removing the LED chips which are not adsorbed by the magnetic units; and 3) transferring the regularly arranged LED chips on the crystal mixing substrate to a transfer substrate. Crystal mixing of the LED chips is realized ina simple and efficient manner, the LED chips are prevented from being sorted in a large amount and the utilization rate of the LED chips is greatly improved.

Description

technical field [0001] The invention belongs to the field of semiconductor display, in particular to an LED chip and a crystal mixing method. Background technique [0002] With the continuous improvement of indoor display application technology, currently used projection, DLP (Digital Light Processing, digital light processing), LCD (Liquid Crystal Display, liquid crystal display), PDP (Plasma Display Panel, plasma display panel) and other display application products can no longer be completely Meet market application needs. There are also some defects in various aspects so that it cannot break through the development of technology. The LED (Light Emitting Diode, light-emitting diode) full-color display technology overcomes many defects of the above products, such as Mini LED (LED display and backlight) and Micro LED, which have become indoor and outdoor displays, such as command centers, outdoor advertising screens, The first choice for occasions such as conference cente...

Claims

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Application Information

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IPC IPC(8): H01L33/40H01L33/00
CPCH01L33/40H01L33/005H01L2933/0016H01L2933/0033
Inventor 付小朝刘权锋卢敬权
Owner 东莞市中晶半导体科技有限公司