Display Panel Compensation Module for Leakage Stabilization
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Solution Overview
Problem
Existing display panels experience significant brightness fluctuations between consecutive frames due to leakage in switching transistors, leading to flickering issues.
Innovation Solution
A display panel with a compensation module that inputs compensation voltages during blank periods of consecutive frames, stabilizing the subpixel potential and reducing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If data voltage of opposite polarity is input to subpixels in consecutive display frames, then the leakage between source and drain increases, but the brightness stability deteriorates
Solution Approach 1:
The compensation module applies a compensation voltage with the same polarity as the data voltage during the blank period before the next frame's data voltage input. This preliminary action counteracts the voltage difference that would otherwise cause increased leakage, thereby preventing brightness instability before it occurs.
Solution Approach 2:
The invention changes the voltage parameter by introducing a compensation voltage that has the same polarity as the incoming data voltage. This parameter change (adding same-polarity voltage) reduces the voltage difference across the switching transistor, thereby reducing leakage and improving brightness stability.
2Stability of the object's composition
If compensation voltage with same polarity as data voltage is applied, then subpixel potential stability improves, but device complexity increases
Solution Approach 1:
The compensation module is electrically connected to the existing data lines, allowing it to utilize the same signal transmission path for both data voltage input and compensation voltage application. This multi-functionality approach reduces device complexity by reusing existing infrastructure rather than creating separate dedicated pathways.
Data Source
AI summary
A display panel, for displaying images including a first frame and a second frame, includes subpixels, scan lines, data lines, and a compensation module. The data lines are configured to input a first data voltage to the subpixels in a display period of the first frame and to input a second data voltage to the subpixels in a display period of the second frame. The compensation module is configured to input a first compensation voltage to the subpixels in a blank period of the first frame and to input a second compensation voltage to the subpixels in a blank period of the second frame, where the first compensation voltage is not zero, and the second compensation voltage is not zero.