Display Panel Mischarge Detection via Pixel Electrode Signal Isolation
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Solution Overview
Problem
Conventional detection methods fail to accurately detect the mischarge degree of array substrates in display panels due to the small width of driving wiring, leading to poor picture quality and user experience.
Innovation Solution
A mischarge detection method that isolates a target sub-pixel from adjacent sub-pixels and data lines, allowing for the acquisition of scanning signals through the pixel electrode, which reflects the mischarge degree of the array substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional detection apparatus is used to detect mischarge degree, then detection can be performed, but the apparatus has relatively large volume and cannot acquire driving signal from narrow driving wiring
Solution Approach 1:
The patent uses the pixel electrode as an intermediary to transfer the scanning signal from the narrow scanning line to the detection apparatus. By connecting the scanning line to the pixel electrode through a switch tube, the signal is transferred to a larger area electrode that can be easily accessed by conventional detection equipment, solving the problem of signal acquisition from narrow wiring.
Solution Approach 2:
The patent extracts the scanning signal from the narrow scanning line and transfers it to the pixel electrode for external detection. This allows the detection apparatus to measure the mischarge degree by detecting the voltage at the pixel electrode, which represents the scanning signal state without requiring direct access to the narrow scanning line.
2Ease of operation
If driving signals are transmitted from both ends of driving wiring to achieve directional scan, then scanning can be realized, but transmission delay occurs causing mischarge phenomenon
Solution Approach 1:
The patent implements a detection system that measures the mischarge degree by detecting the voltage at the pixel electrode. This feedback mechanism allows real-time monitoring of signal transmission quality and identification of mischarge conditions, enabling system optimization to reduce transmission delays and improve scanning reliability.
Data Source
AI summary
A mischarge detection method, a mischarge detection apparatus, and a display apparatus are provided. The mischarge detection method includes: acquiring a target sub-pixel; cutting off a connection between the target sub-pixel and sub-pixels adjacent to the target sub-pixel in a vertical direction; cutting off a connection between the target sub-pixel and the target data line; outputting a scanning signal of the target scanning line to the pixel electrode of the target sub-pixel through the target data line, the target common electrode line sequentially; acquiring the scanning signal of the target scanning line from the pixel electrode of the target sub-pixel; and acquiring a mischarge degree of an array substrate according to the scanning signal of the target scanning line.