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Long-service-life LED substrate and preparation method thereof

A technology of LED substrate and life, applied in electrical components, circuits, semiconductor devices, etc., can solve the problems of poor visible light response, short material life, large internal stress, etc., to achieve high thermal cycle number, long service life and stability. Good results

Active Publication Date: 2018-01-16
NINGBO KING BRIDGE LIGHTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a long-life LED substrate and its preparation method, which can solve the shortcomings of the general basic materials of LEDs, such as hygroscopicity, easy aging, poor heat resistance, high temperature and easy discoloration under short-wave light, and can solve the problems of such materials. Before curing, there are some defects such as toxicity and large internal stress after curing, which makes the material life short; in addition, it can also make full use of the superior performance of titanium oxide (TiO2) and solve the shortcomings of poor response to visible light

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A long-life LED substrate and a preparation method thereof, the specific process of preparing the LED substrate is as follows:

[0034] Add 82kg of alumina particles with a particle size of 40~50μm, 12kg of silicon carbide particles with a particle size of 0.2~0.4μm and 6kg of aluminum dihydrogen phosphate into the mortar, grind them evenly, introduce them into the mold, and press them with a maximum pressure of 100KN , at a running speed of 2.5mm / min, press it into shape, and then dry it in a constant temperature resistance box at a temperature of 90°C for 5h. Then carry out low-temperature sintering under normal pressure, the temperature is 800 ° C, and cool with the furnace after 1 hour to obtain an alumina / silicon carbide composite ceramic plate; prepare 1 L of polystyrene microsphere dispersion emulsion with a mass concentration of 2.5%, add 5 kg of titanium dioxide and 1.2kg of 1-octanol, shake to make the emulsion uniform and stable, pour it into the boric acid s...

Embodiment 2

[0038] A long-life LED substrate and a preparation method thereof, the specific process of preparing the LED substrate is as follows:

[0039] Add 80kg of alumina particles with a particle size of 40~50μm, 13kg of silicon carbide particles with a particle size of 0.2~0.4μm and 7kg of aluminum dihydrogen phosphate into the mortar, grind them evenly, introduce them into the mold, and press them with a maximum pressure of 105KN , at a running speed of 2.2mm / min, press it into shape, and then dry it in a constant temperature resistance box at a temperature of 80°C for 6h. Then carry out low-temperature sintering under normal pressure, the temperature is 900 ° C, and cool with the furnace after 1 h to obtain an alumina / silicon carbide composite ceramic plate; prepare 1 L of polystyrene microsphere dispersion emulsion with a mass concentration of 2%, add 5 kg of titanium dioxide and 1.2kg of 1-octanol, shake to make the emulsion uniform and stable, pour it into the boric acid soluti...

Embodiment 3

[0043] A long-life LED substrate and a preparation method thereof, the specific process of preparing the LED substrate is as follows:

[0044] Add 85kg of alumina particles with a particle size of 40~50μm, 8kg of silicon carbide particles with a particle size of 0.2~0.4μm and 7kg of aluminum dihydrogen phosphate into the mortar, grind them evenly, introduce them into the mold, and press them with a maximum pressure of 100KN , at a running speed of 2.5mm / min, press it into shape, and then dry it in a constant temperature resistance box at a temperature of 70°C for 7h. Then carry out low-temperature sintering under normal pressure, the temperature is 850°C, and cool with the furnace after 1h to obtain the alumina / silicon carbide composite ceramic plate; prepare 1L of polystyrene microsphere dispersion emulsion with a mass concentration of 2.5%, add 5kg of titanium dioxide and 1.2kg of 1-octanol, shake to make the emulsion uniform and stable, pour it into the boric acid solution ...

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Abstract

The invention belongs to the technical field of an LED photoelectric industry, and provides a long-service-life LED substrate and a preparation method thereof. The preparation method comprises the steps of firstly sintering under a low-temperature condition to obtain an aluminum oxide / silicon carbide composite ceramic plate, then preparing a polystyrene microsphere dispersion emulsion to obtain composite microspheres of titanium dioxide and polystyrene under a certain condition, finally coating the aluminum oxide / silicon carbide composite ceramic plate with the obtained composite microspheres,and adding an aluminum nitride heat dissipating plate on the aluminum oxide / silicon carbide composite ceramic plate so as to obtain an LED substrate which has good heat dissipation, heat shock resistance and corrosion resistance and is long in service life. The LED substrate prepared according to the method has good heat dissipation, heat shock resistance and corrosion resistance, is good in response for visible light with a long wave length and long in service life, and has the advantages of deodorization, bacteria resistance, pollution prevention, good stability, ability of being non-poisonous, low cost and the like. Meanwhile, the LED substrate is simple to operate, low in sintering temperature and easy to popularize and perform scale production.

Description

technical field [0001] The invention belongs to the technical field of LED optoelectronic industry and provides a long-life LED substrate and a preparation method. Background technique [0002] Semiconductor technology and industry have changed the world. LSI computers and the Internet have entered every level of our society. Human beings have entered the information age at an astonishing speed, and the 21st century will be an era in which microelectronics and optoelectronics will play a role together, and will be the "cornerstone" of the future information society. LED has become the entry point for the development of third-generation semiconductor technology and a breakthrough for the development of optoelectronics. In the past 20 years, people have been looking for green lighting sources. Europe has specially formulated a five-year action plan, proposing three conditions that new light sources must meet: high efficiency; low consumption; materials that do not pollute th...

Claims

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Application Information

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IPC IPC(8): H01L33/48H01L33/64
Inventor 陈庆司文彬
Owner NINGBO KING BRIDGE LIGHTING TECH
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