Method for transmitting electrical signal for detecting electrical defect of thin film transistor display panel
By applying electrical signals to the circuit layer electrodes of the thin-film transistor display panel for electrical aging treatment, the problem of difficulty in identifying potential abnormal points in the prior art is solved, realizing high-precision and high-stability electrical defect detection, and improving panel process yield and detection reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU XINGYING TESTING EQUIPMENT CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to identify potential anomalies in the early stages of thin-film transistor display panel manufacturing, leading to display abnormalities and reduced product yield. Furthermore, traditional detection methods suffer from limitations such as limited signal types, inability to verify probe contact status, and inaccurate determination of electrode short-circuit defects, failing to meet the high precision and stability requirements of high-end display panels.
Electrical aging is performed by applying an electrical signal output from an array generator to the circuit layer electrodes of a thin-film transistor display panel. Using DC, AC signals or a combination thereof, combined with overcurrent protection and probe contact confirmation, explicit electrical defects of foreign objects and abnormal points of insulating film characteristics are detected. A multi-degree-of-freedom PROBE structure and a multi-axis drive system are used for precise contact and signal transmission.
It significantly improves panel manufacturing yield, reduces the probability of missed detections and false damage, enables early detection and handling of potential defective points, and improves the reliability and coverage of detection. It is suitable for panels of different specifications and layouts.
Smart Images
Figure CN122410171A_ABST