Adaptive Over-Driving for Display Panel Driving Apparatus
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Solution Overview
Problem
Existing display panel driving technologies face challenges in achieving high display quality, particularly in adapting to changing frame rates and ensuring optimal image data output during varying vertical blank periods.
Innovation Solution
A display panel driving apparatus with an over-driving part that generates and outputs first and second over-driving data based on previous and present frame data in minimum and maximum vertical blank periods, respectively, allowing for adaptive over-driving to maintain high display quality despite frame rate changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed over-driving method is used, then the circuit design is simple, but display quality deteriorates when frame rate changes
Solution Approach 1:
The patent implements dynamic over-driving by selecting between first over-driving data (for minimum vertical blank period) and second over-driving data (for maximum vertical blank period) based on the actual frame rate. The over-driving part dynamically adjusts the over-driving amount according to the vertical blank period duration, ensuring optimal display quality across varying frame rates while maintaining reasonable circuit complexity through selective data application.
2Device complexity
If over-driving data is not adapted to vertical blank period, then the processing is simple, but voltage issues occur causing image quality degradation
Solution Approach 1:
The patent changes the over-driving parameter based on the vertical blank period characteristics. When the vertical blank period is minimum, first over-driving data with appropriate over-driving amount is applied; when the vertical blank period is maximum, second over-driving data with different over-driving amount is applied. This parameter adaptation prevents under-voltage or over-voltage issues that would otherwise degrade image quality.
3Reliability
If adaptive over-driving is implemented, then display quality is maintained across frame rates, but device complexity increases
Solution Approach 1:
The patent segments the over-driving control into distinct parts: first over-driving data for minimum vertical blank period conditions, second over-driving data for maximum vertical blank period conditions, and an over-driving part that selects between them based on actual frame rate. This segmentation manages complexity by creating modular, condition-specific data sets rather than requiring continuous complex calculations.
Data Source
AI summary
A display panel driving apparatus includes an over-driving part, where the over-driving part is configured to receive first image data, and to output second image data using first over-driving data and second over-driving data, the first over-driving data is generated according to previous frame data and present frame data for a minimum blank period between the previous frame data and the present frame data of the first image data, the second over-driving data is generated according to the previous frame data and the present frame data for a maximum blank period between the previous frame data and the present frame data of the first image data, and a high display quality of a display apparatus may be achieved.