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Medical LED chip and preparation method thereof

A technology of LED chips and scintillation crystals, applied in the field of medical light sources, can solve the problems of short service life of LEDs, and achieve the effect of prolonging the service life

Pending Publication Date: 2021-06-01
BEIJING TRUWIN OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, radiation of high-energy particles such as x-rays (wavelength 0.001-10nm) and γ-rays (wavelength less than 0.001nm) have existed for a long time in medical operating rooms or hospital radiology departments. LEDs in these environments have a short service life, which provides a , maintenance cost

Method used

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  • Medical LED chip and preparation method thereof
  • Medical LED chip and preparation method thereof
  • Medical LED chip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055]Example 1 Medical LED chip (single-layer flash crystal layer)

[0056]In this embodiment, the scintillation crystal layer 91 is a LUAP: Ce film having a thickness of a layer of 600 nm using a single crystal rare earth silicon (aluminum) acid salt LUAP: Ce, a metal grid layer 92 is a metal silver, a gate line. The height is 450 nm, the spacing is 450 nm, the scintillation crystal layer 91 and the metal grid layer 92 are 1 layer. 1050

[0057]The preparation process of the medical LED chip in this embodiment is as follows:

[0058]S1: The substrate 1 is passed to the MOCVD device to ensure that the surface of the substrate is cleaned, and the nucleation layer 2 composed of AlN is grown on the substrate 1 under the conditions of the growth temperature of 550 ° C, pressure 500 torr;

[0059]S2: The non-doped layer 3 composed of GaN is grown on the nucleation layer 2 under the condition of 1080 ° C, the pressure is 200 Torr.

[0060]S3: Under the conditions of the growth temperature of 1090 ° C, ...

Embodiment 2

[0067]Example 2 Medical LED chip (single-layer flash crystal layer)

[0068]Compared with Example 1, the scintillation crystal layer 91 and the metal grid layer 92 in the present embodiment were two layers.

Embodiment 3

[0069]Example 3 Medical LED chip (single layer flash crystal layer)

[0070]Compared to Example 1, the scintillation crystal layer 91 and the metal grid layer 92 in the present embodiment were two layers, and the metal grid layer 92 is metal copper.

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Abstract

The invention belongs to the technical field of medical light sources, and particularly discloses a medical LED chip which mainly comprises an LED body and a light-transmitting anti-radiation layer arranged on the outer surface of the body, the light-transmitting anti-radiation layer is arranged on the light-emitting face of the LED, and the light-transmitting anti-radiation layer comprises a scintillation crystal layer and a metal grid layer; the scintillation crystal layer is arranged on the LED body, and the metal grid layer is arranged on the scintillation crystal layer. Compared with the prior art, the medical LED chip at least has one of the following beneficial effects: the medical LED chip provided by the invention can prevent radiation waves of which the wavelength is smaller than that of ultraviolet rays from entering an LED, and does not hinder the emergence of light emitted by the LED chip, so that the service life of the LED is prolonged under the condition that the normal functions of the LED are not influenced. The chip is especially suitable for severe environments where radiation of high-energy particles such as x-rays and gamma-rays exists for a long time.

Description

Technical field[0001]The present application belongs to the technical field of medical light source. More specifically, it relates to a destruction of the PN junction capable of preventing high energy rays to the LED, and does not hinder the medical LED chip of the LED chip exit light and the preparation method thereof.Background technique[0002]Light-Emitting Diode, LEDs are a semiconductor electronic component that can illuminate. This electronic component appears as early as 1962, which can only issue a low-spot red light. After the development of other monochromatic light, the light that can be emitted today has spread throughout the visible light, infrared and ultraviolet, and the use is also from the beginning As an indicator, the display panel, etc. With the continuous advancement of technology, the light emitting diode has been widely used in lighting, flat panel display, medical devices, and the like.[0003]However, the medical operating room or the hospital radiation departm...

Claims

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Application Information

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IPC IPC(8): H01L23/552H01L33/00
CPCH01L23/552H01L33/00
Inventor 罗轶张健郭庆霞易斌吴雪
Owner BEIJING TRUWIN OPTOELECTRONICS