Multi-channel detecting system for detecting optical performance of LED chip

A LED chip and optical performance technology, applied in the field of LED chip detection system, can solve the problems of weak magnetic field changes, low efficiency, high price, etc.
CN104459507AInactive Publication Date: 2015-03-25CENT TESTING INT GRP CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
CENT TESTING INT GRP CO LTD
Publication Date
2015-03-25
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

A multi-channel detecting system for detecting the optical performance of an LED chip is characterized in that the system comprises a PCB, a sample table, a plurality of electrodes, a connecting plug, an electrical detecting unit, an optical detecting unit and a point connecting device; the sample table is arranged at the center of the PCB and is used for mounting the LED chip; the electrodes are arranged around the PCB; the connecting plug is electrically connected with the electrodes; the electrical detecting unit comprises a voltage meter, a current source, a switch matrix and an output plug, the voltage meter and the current source are electrically connected with the output plug through the switch matrix, and the switch matrix converts the electrical connection of all pins in the output plug; the point connecting device comprises a spot-welder and a metal wire, and the spot-welder is used for enabling the two ends of the metal wire to be connected with the electrodes and the LED chip respectively. The multi-channel detecting system is used for directly detecting the LED chip.
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Description

technical field

[0001] The invention relates to a detection system for LED chips, in particular to a multi-channel detection system for LED chips. Background technique

[0002] Semiconductor light-emitting diodes (LEDs) have many new problems in quality evaluation and detection methods due to their small size, directional emission, high brightness, and PN junction electrical characteristics. Different applications determine the performance requirements of LED products. From the perspective of optical performance, LEDs used for display mainly include parameters such as brightness, viewing angle distribution, and color. LEDs used for general lighting pay more attention to parameters such as luminous flux, spatial distribution of light beams, color, and color rendering characteristics, while LEDs used in biological applications pay more attention to parameters such as biological effective radiation power and effective radiation illuminance. In addition, a light-emitting diode...

Claims

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