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Nanocrystalline LED device and method for making light-emitting device

A technology of LED devices and nanocrystals, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of high energy consumption, incompatible with energy saving and emission reduction, and achieve the effects of low energy consumption, improved convenience, and reduced complexity

Active Publication Date: 2021-04-02
GUANGDONG INST OF SEMICON IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The commonly used photo-converting material is phosphor powder, which usually needs to be prepared by high-temperature calcination, which consumes a lot of energy and does not meet the requirements of energy saving and emission reduction.

Method used

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  • Nanocrystalline LED device and method for making light-emitting device
  • Nanocrystalline LED device and method for making light-emitting device
  • Nanocrystalline LED device and method for making light-emitting device

Examples

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no. 1 example

[0034] see figure 1 , this embodiment provides a nanocrystal LED device 100, which uses nanocrystals with a single broad emission wavelength as the light conversion material, which can reduce the complexity of device fabrication, improve material costs, and improve convenience.

[0035] The nanocrystalline LED device 100 provided in this embodiment includes an LED chip 110 and a light conversion layer 130 disposed on the LED chip 110 . Wherein, the light conversion layer 130 includes nanocrystals with a single broad emission wavelength. Specifically, the nanocrystalline material on the light conversion layer 130 is a single material with a single luminous peak, avoiding the use of multiple materials or nanocrystalline materials with multiple sizes to form multiple luminous peaks, which will affect the display effect and reduce the complexity of the device. During preparation, the light conversion layer 130 is formed by coating nanocrystals on the LED chip 110, and its thickn...

no. 2 example

[0050] see Figure 4 , this embodiment provides a method for manufacturing a nanocrystalline LED device 100, which can manufacture the nanocrystalline LED device 100 as provided in the first embodiment.

[0051] The manufacturing method of the nanocrystalline LED device 100 provided in this embodiment includes the following steps:

[0052] S1: Coating nanocrystals on the LED chip 110 and forming a light conversion layer 130 .

[0053] Specifically, in this embodiment, the LED chip 110 is flip-chip, and zinc oxide nanocrystals are coated on the epitaxial substrate layer 111 of the LED chip 110 , and the light conversion layer 130 is formed after the zinc oxide nanocrystals are cured. Of course, if the LED chip 110 adopts a vertical or vertical structure, zinc oxide nanocrystals are coated on corresponding parts of the LED chip 110 to form the light conversion layer 130 .

[0054] It should be noted that the nanocrystals mentioned in this embodiment refer to semiconductor mate...

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Abstract

The invention relates to a nanocrystalline LED device and a manufacturing method of a light emitting device, and relates to the technical field of LED display. The nanocrystalline LED device comprisesan LED chip and a light conversion layer arranged on the LED chip. The light conversion layer comprises nanocrystals having a single broad emission wavelength. According to the nanocrystalline LED device, the nanocrystals with the single broad emission wavelength are used as light conversion material, the manufacturing process is simple, the energy consumption is low, the use of phosphor powder can be avoided, the complexity of device preparation can be reduced, the material cost can be improved and the convenience can be improved.

Description

technical field [0001] The present application relates to the technical field of LED display, in particular, to a method for manufacturing a nanocrystalline LED device and a light-emitting device. Background technique [0002] Inorganic LED chips have extremely high luminous efficiency, among which blue LED chips have the highest luminous efficiency. At present, more and more white light lighting and display backplanes are composed of blue LED chips and the light conversion materials on them. The commonly used photo-converting material is phosphor powder, which usually needs to be prepared by high-temperature calcination, which consumes a lot of energy and does not meet the requirements of energy saving and emission reduction. Contents of the invention [0003] The purpose of this application is to provide a nanocrystalline LED device, which uses nanocrystals with a single wide emission wavelength as a light conversion material, which can reduce the complexity of device pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50
CPCH01L33/502H01L2933/0041
Inventor 王建太龚政陈志涛潘章旭郭婵龚岩芬刘久澄
Owner GUANGDONG INST OF SEMICON IND TECH