Circuit backboard detection device and detection method
A detection device and detection method technology, applied in the direction of electrical connection testing, etc., can solve problems such as difficult to clarify the root cause of bad points
Active Publication Date: 2021-09-28
CHONGQING KONKA PHOTOELECTRIC TECH RES INST CO LTD
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Problems solved by technology
[0003] At present, there is no relevant technology for Micro-Light Emitting Diode (Micro-LED) circuit backplane detection. Usually, it can only be determined by whether the LED chip can be lit after a large amount of LED chips are transferred to the circuit backplane. Judging dead pixels, but this method is difficult to clarify whether the root cause of dead pixels is caused by the circuit backplane
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[0052] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the application more thorough and comprehensive.
[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application.
[0054] At present, there is no relevant technology for Micro-Light Emitting Diode...
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The invention discloses a circuit backboard detection device and method, the circuit backboard detection device comprises a signal detection module and a detection electrode, the detection electrode is electrically connected with the signal detection module, and the detection electrode is used for being opposite to a first contact electrode on a circuit backboard and arranged at an interval; a first contact electrode and a second contact electrode are arranged on the circuit backboard, the first contact electrode is electrified to generate changing potential, the detection electrode is used for sensing potential change of the first contact electrode and forming a first electric signal, and the signal detection module is used for judging whether the first contact electrode is normal or not according to the first electric signal. The detection electrode and the first contact electrode are oppositely arranged at an interval to form a parallel-plate capacitor, and potential change of the first contact electrode causes potential change of the detection electrode, so that the detection electrode can sense the potential change of the first contact electrode and output a first electric signal; and the signal detection module judges the first contact electrode according to the first electric signal so as to realize detection of the circuit backboard.
Description
technical field [0001] The present application relates to the technical field of light emitting diodes, and in particular to a circuit backplane detection device and a circuit backplane detection method. Background technique [0002] LED display technology is a technology that bonds the LED chip to the circuit backplane, and the circuit on the circuit backplane conducts the LED chip to energize and emit light. [0003] At present, there is no relevant technology for Micro-Light Emitting Diode (Micro-LED) circuit backplane detection. Usually, it can only be determined by whether the LED chip can be lit after a large amount of LED chips are transferred to the circuit backplane. Judging dead pixels, but this method is difficult to clarify whether the root cause of dead pixels is caused by the circuit backplane. [0004] Therefore, how to realize the detection of the circuit backplane is an urgent problem to be solved. Contents of the invention [0005] In view of the above-...
Claims
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IPC IPC(8): G01R31/70
CPCG01R31/70
Inventor 王广徐瑞林林建宏
Owner CHONGQING KONKA PHOTOELECTRIC TECH RES INST CO LTD