LED packaging module detection method and detection apparatus

A technology of LED packaging and detection methods, which is applied in the direction of diode testing and single semiconductor device testing, etc., can solve the problems of undetectable reverse current and false detection, and achieve the effect of improving the picking rate and the detection process is simple and reliable

Inactive Publication Date: 2017-06-27
FOCUS LIGHTINGS SCI & TECH
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Problems solved by technology

[0007] However, this method can only detect whether a single LED chip is leaking. When the LED package module is a double-crystal series module or a three-crystal series module, as long as one of the LED chips does not leak, the reverse current cannot be detected, that is, When the test result is no leakage, therefore, this method has the risk of false detection

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0037] ginseng figure 1 , the LED packaging module detection method of one embodiment of the present invention comprises steps:

[0038] Provide an LED packaging module, which includes a number of LED chips connected in series;

[0039] applying a detection current to the LED packaging module;

[0040] Detecting the total voltage and / or total brightness of the LED packaging module;

[0041] Judging whether the total voltage and / or the total brightness is within a preset range, if yes, none of the plurality of LED chips leaks electricity, if not, at least one LED chip leaks electricity.

[0042] Her...

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Abstract

The invention discloses an LED packaging module detection method and detection apparatus. The LED packaging module detection method includes the steps: providing an LED packaging module including a plurality of serial-connected LED chips; applying one detection current to the LED packaging module; detecting the total voltage and / or total brightness of the LED packaging module; determining whether the total voltage and / or total brightness are in the preset range; if so, determining that the plurality of LED chips do not leak electricity; and if not, determining that at least one LED chip leaks electricity. The LED packaging module detection method and detection apparatus can detect whether the LED packaging module with the plurality of serial-connected LED chips leaks electricity by means of the mode of applying the detection current to detect the total voltage and / or total brightness, and are simple and reliable in the detection process, and can effectively improve the pick out rate of the electric leakage LED packaging modules.

Description

technical field [0001] The invention relates to the field of LED packaging, in particular to a detection method and detection device for an LED packaging module. Background technique [0002] As a new generation of lighting source, LED (Light Emitting Diode) has the advantages of long life, high luminous efficiency, energy saving and environmental protection, etc. compared with traditional light sources such as incandescent lamps. Lighting, display, medical and other fields have put forward strict requirements on the performance of LEDs under various environmental conditions. [0003] Due to defects in manufacturing and production processes, LEDs are prone to leakage. [0004] At present, there are single-crystal module, double-crystal series module or triple-crystal series module in the LED packaging module scheme, that is, there are single LED chip, two series-connected LED chips or three series-connected LED chips in one package module. [0005] When the LED packaging m...

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Application Information

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IPC IPC(8): G01R31/26
CPCG01R31/2635
Inventor 李庆张广庚孙豪张宇陈立人
Owner FOCUS LIGHTINGS SCI & TECH
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