Method for LED aging accelerating

An accelerated aging, LED chip technology, applied in the direction of lamp testing, etc., can solve problems such as defects

CN104765006AInactive Publication Date: 2015-07-08TIANJIN POLYTECHNIC UNIV

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: TIANJIN POLYTECHNIC UNIV
Publication Date: 2015-07-08
Estimated Expiration: Not applicable · inactive patent

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Abstract

Provided is a method for LED aging accelerating. Electron beam irradiation equipment is used for carrying out irradiation on an LED chip, irradiation energy, dose and time are adjusted, and aging accelerating is carried out on an LED. The method comprises the steps that first, the LED chip is subjected to electron beam irradiation, a particle accelerator and a series of matched beam transmission devices are used for irradiation, the speed of a conveying belt and irradiation time are adjusted, and the irradiation dose is adjusted; then, the LED chip obtained after irradiation works under certain working current, and lighting effect testing is carried out with an integrating sphere at intervals; then, an LED light effect decay curve obtained after electron beam irradiation is subjected to fitting, and a corresponding function curve is obtained; and finally an electron beam irradiation LED aging accelerating light effect decay empirical formula is obtained, and the LED chip is subjected to service life estimation. The invention aims at providing the experimental method for LED aging accelerating, through the electron irradiation method and the obtained empirical formula, the working time for an LED aging test can be saved, and good practical value is achieved in the field of LED chip production and application.

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Description

technical field

[0001] The invention relates to a method for accelerating the aging of a light emitting diode (Light Emitting Diode, LED) by using irradiation technology. The present invention uses electron beams produced by Dynamitron (ground nanometer) series accelerators to irradiate LEDs, and uses DJ5000 LED aging tester (high-power type) to carry out aging experiments. After a long period of comparison, it is obtained that electron beam irradiation has a certain acceleration on LEDs. Aging effect. It belongs to the field of semiconductor devices. Background technique

[0002] LED is called the fourth-generation green lighting source, which is a semiconductor solid device that directly converts electrical energy into light energy. Because LED has the advantages of energy saving, high efficiency, environmental protection, and long life, in addition to the LED light source that is being popularized in the field of daily electric lighting, there are currently two main typ...

Claims

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