Display Panel Voltage Detection Circuit for Abnormality Compensation
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Solution Overview
Problem
Display panels face operational issues due to abnormal voltage values at low-level and high-level terminals, affecting the proper functioning of light-emitting units, which are often caused by faulty connections and voltage fluctuations during signal transmission.
Innovation Solution
A display panel design incorporating a gate driving circuit with multiple stages of output terminals and a detection circuit featuring a voltage divider circuit and switching units, which outputs shift signals and determines voltage normalcy by counting pulse signals, allowing for real-time compensation of voltage values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage terminals are used to drive light-emitting units, then the display panel can operate, but voltage abnormalities occur causing operational failures
Solution Approach 1:
The patent applies preliminary action by detecting voltage abnormalities at the low-level and high-level terminals before they cause operational failures. The detection circuit monitors voltage levels in advance, allowing the system to identify and compensate for abnormal voltages before they disrupt light-emitting unit operation, thus preventing rather than merely responding to failures.
2Measurement precision
If detection circuit is added to monitor voltage, then voltage abnormalities can be detected, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the detection circuit to serve multiple functions: it detects voltage abnormalities at both low-level and high-level terminals, counts pulse signals to identify specific abnormal conditions, and provides information for compensation. This multi-functional approach achieves comprehensive voltage monitoring without proportionally increasing circuit complexity, as a single detection circuit handles multiple measurement and diagnostic tasks.
Data Source
AI summary
A display panel, a method for detecting and compensating the display panel, and a display device are provided. The display panel includes a first voltage terminal, a gate driving circuit, and a detection circuit. The gate driving circuit includes multiple stages of first output terminals; and the detection circuit includes a voltage divider circuit, multiple first switching units, and multiple second switching units. The voltage divider circuit includes multiple stages of voltage output terminals, and the voltage output terminals and the first output terminals are arranged in one-by-one correspondence; the first switching units and the voltage output terminals are arranged in one-by-one correspondence; the second switching units and the first switching units are arranged in one-by-one correspondence; and the second switching units have second terminals connected to a second output terminal.