Display Driving Circuit With Reset Compensation for Dark Bands
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Solution Overview
Problem
Direct output of reset signals without compensation results in dark bands on display panels, affecting display quality.
Innovation Solution
A driving circuit that compensates the reset signal during non-display areas to dynamically adjust the terminal voltage of light-emitting elements, preventing dark bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the reset signal is directly output to drive the display panel without compensation, then the device complexity is reduced, but dark band areas appear in the display panel affecting display quality
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the reset signal voltage levels based on the scan signal timing. The control circuit modifies the reset signal parameters (voltage magnitude and duration) according to whether the scan signal is in a display area or non-display area, thereby eliminating dark bands while maintaining reasonable circuit complexity
Solution Approach 2:
The control circuit receives feedback from the scan signal to determine the current scan line position and adjusts the reset signal accordingly. This feedback mechanism enables the system to adapt the reset signal to different display regions, preventing dark bands without requiring overly complex hardware modifications
2Manufacturing precision
If the reset signal is compensated dynamically based on scan signal timing, then display quality is improved, but the device complexity increases
Solution Approach 1:
The patent merges the reset signal generation function with the scan signal control function in a single control circuit. By combining these functions, the circuit achieves dynamic reset compensation without adding separate complex control modules, thus improving display quality while limiting the increase in device complexity
Solution Approach 2:
The system implements dynamic adjustment of the reset signal based on real-time scan signal timing. The control circuit continuously adapts the reset signal parameters according to the current scan line position, enabling high display quality through dynamic control rather than static complex circuitry
Data Source
AI summary
An electronic apparatus including a display panel and a driving circuit is provided. The display panel includes a plurality of display units. Each of the display units includes a light-emitting element. The driving circuit is coupled to the display panel. The driving circuit is configured to output a scan signal and a reset signal. When a reset interval of the scan signal is transmitted in a non-display area of the display panel, the driving circuit compensates the reset signal and outputs the compensated reset signal to reset the light-emitting element.