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Crystal mixing method of LED chips

A technology of LED chips and mixed crystals, which is applied in the direction of conveyor objects, electrical components, electric solid devices, etc., can solve the problems of low chip utilization and large sorting volume

Pending Publication Date: 2021-09-14
HCP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a crystal mixing method for LED chips, which is used to solve the huge amount of sorting existing in the application of LED chips for LED display screens in the prior art, and the chip utilization low rate problem

Method used

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  • Crystal mixing method of LED chips
  • Crystal mixing method of LED chips
  • Crystal mixing method of LED chips

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Experimental program
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Effect test

Embodiment 1

[0064] Such as Figure 1 to Figure 6 and Figure 7 ~ Figure 9 As shown, this embodiment provides a method for mixing crystals of an LED chip 10. The LED chip 10 in this embodiment is a Micro LED chip 10, and the top of the Micro LED chip 10 has a cylindrical structure 102. The cylindrical The shape structure 102 is used to keep the top of the Micro LED chip 10 facing upward during the relative movement with the substrate, and at the same time turn over the Micro LED chip 10 with the top facing downward.

[0065] In a specific implementation process, such as Figure 1 ~ Figure 3 As shown, the Micro LED chip 10 can be a vertical structure, the Micro LED chip 10 includes an LED body 101, and the top of the LED body 101 has a cylindrical structure 102, and the cylindrical structure 102 is the structure of the Micro LED chip. 10, the bottom of the LED body 101 of the Micro LED chip 10 has a second electrode, and the polarity of the first electrode is opposite to that of the secon...

Embodiment 2

[0075] Such as Figure 10 ~ Figure 14 As shown, the present embodiment provides a method for mixing LED chips 10, such as Figure 10 As shown, the LED chip 10 is a Micro LED chip 10, the Micro LED chip 10 is a horizontal structure, the Micro LED chip 10 includes a top light-emitting surface and a bottom, and the bottom has a first electrode and a second electrode, The polarity of the first electrode is opposite to that of the second electrode. The first electrode is a central electrode 103 located at the center of the bottom. The second electrode is a ring electrode 104 that surrounds the bottom. first electrode.

[0076] Specifically, the mixed crystal method of the Micro LED chip 10 includes:

[0077] Step 1), mixing Micro LED chips 10 with various light emitting wavelengths into a solvent, the solvent may be a single organic solvent such as pure water, ethanol, acetone or isopropanol, or a mixture of the above solvents, The density of the solvent is smaller than that of ...

Embodiment 3

[0084] Such as Figure 15 ~ Figure 18 As shown, this embodiment provides a crystal mixing method for LED chips 10, the LED chips 10 are Mini LED chips 10, the Mini LED chips 10 have a horizontal structure, and the Mini LED chips 10 include a top light-emitting surface and a bottom, There is a first electrode and a second electrode on the bottom, the polarity of the first electrode is opposite to that of the second electrode, the first electrode is the center electrode 103, located at the center of the bottom, the second The electrode is a ring electrode 104, which surrounds the first electrode in the form of a ring electrode.

[0085] Specifically, the crystal mixing method of the Mini LED chip 10 includes:

[0086] Step 1), mixing Mini LED chips 10 with various light emitting wavelengths into a solvent, the solvent may be a single organic solvent such as pure water, ethanol, acetone or isopropanol, or a mixture of the above solvents, The density of the solvent is smaller th...

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Abstract

The invention provides a crystal mixing method of LED chips. The comprises the following steps that: 1) a plurality of LED chips with various light-emitting wavelengths are provided, and the LED chips are mixed into a solvent with the density smaller than that of the LED chips; (2) a mixed crystal substrate is provided, the mixed crystal substrate is provided with a plurality of grooves suitable for embedding of the LED chips, the solvent mixed with the LED chips is poured on the mixed crystal substrate, and the mixed crystal substrate and the LED chips are made to move relatively to make the LED chips embedded into the grooves; (3) the LED chips which are not embedded into the grooves are removed; and 4)g the LED chips in the grooves are transferred. According to the invention, crystal mixing of the LED chips is realized in a simple and efficient manner, the LED chips are prevented from being sorted in a huge amount, and the utilization rate of the LED chips is greatly improved.

Description

technical field [0001] The invention belongs to the field of design and manufacture of semiconductor displays, in particular to a method for mixing crystals of LED chips. 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 occas...

Claims

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Application Information

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IPC IPC(8): H01L21/683H01L21/677H01L27/15
CPCH01L21/6835H01L27/156H01L21/67781H01L2221/68368
Inventor 庄文荣孙明付小朝黄志强卢敬权
Owner HCP TECH CO LTD