Source Driver Compensation for Split-Screen Display Panels
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Solution Overview
Problem
Existing display panels utilizing Output Data Delay Compensation (ODDC) technique suffer from a split-screen problem due to differences in equivalent loads, causing uneven display of images.
Innovation Solution
A display panel design incorporating first and second source driver chips with delay modules and compensation modules to compensate for differences in equivalent resistance between delay loads, ensuring uniform image presentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If Output Data Delay Compensation (ODDC) technique is used to control voltage values of output channels, then the number of source driver chips is reduced, but equivalent loads become different causing split-screen problem
Solution Approach 1:
The patent introduces different compensation strategies for different regions (first and second display areas) based on their specific load characteristics. Each region receives customized compensation to address its unique equivalent load differences, rather than applying a uniform compensation approach across the entire display panel.
Solution Approach 2:
The patent dynamically adjusts compensation parameters (compensation amounts and timing) based on the detected equivalent load values of different display areas. The system modifies these parameters in real-time to maintain optimal image uniformity across varying operating conditions and load configurations.
2Productivity
If different connection relations are used for ODDC modules at different levels, then data signal output is optimized, but equivalent loads differ resulting in split-screen problem
Solution Approach 1:
The patent implements a feedback mechanism where the system detects the actual equivalent loads of different display areas and uses this information to adjust compensation parameters. This closed-loop approach ensures that the data signal output is optimized while simultaneously maintaining image uniformity by correcting any discrepancies caused by different connection relations.
Data Source
AI summary
A display panel, a source driver chip, and an electronic device are proposed, which includes a first source driver chip (including a first delay module having a first delay load and electrically connected to a plurality of first sub-pixels) and a second source driver chip (including a second delay module having a second delay load and electrically connected to a plurality of second sub-pixels). The second source driver chip has a first compensation module for compensating for a difference in equivalent resistance between the second delay load and the first delay load.