Display Panel Load Compensation for Atypical Area Temperature Diffusion
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Solution Overview
Problem
Conventional methods for determining average and temperature diffusion loads in atypical display areas of display panels, such as those in automotive vehicles, result in inaccurate load compensation, leading to deteriorated display quality.
Innovation Solution
A display apparatus and method that accurately determines average and temperature diffusion loads by considering average grayscale values, pixel area ratios, and weight ratios of adjacent unit areas, compensating input image data to generate accurate data signals for improved display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine average load and temperature diffusion load in atypical display areas, then the determination process is simple, but the accuracy of load determination deteriorates
Solution Approach 1:
The display area is divided into multiple unit areas, and the load is determined for each unit area separately by segmenting the display region into manageable sections. This allows accurate calculation of average grayscale values and pixel area ratios for each unit area, resolving the inaccuracy problem while maintaining manageable complexity through systematic division
Solution Approach 2:
Different calculation methods are applied to different unit areas based on their specific characteristics (pixel area ratios, grayscale values, and temperature diffusion ratios). Each unit area's load is calculated with locally appropriate parameters, improving overall accuracy without requiring a completely complex unified approach
2Reliability
If conventional methods are used for load determination, then the processing time is short, but the display quality deteriorates
Solution Approach 1:
Temperature diffusion ratios and weight ratios are pre-calculated and stored for each unit area before actual display operation. This preliminary preparation allows the main processing to use these pre-computed values directly, improving display quality through accurate load determination while minimizing additional processing time during operation
Solution Approach 2:
The system continuously monitors actual display performance and adjusts load determination parameters based on feedback from temperature measurements and grayscale value analysis. This feedback mechanism ensures high display quality by dynamically optimizing load compensation while maintaining efficient processing through iterative refinement rather than exhaustive calculation
Data Source
AI summary
A display apparatus includes a driving controller, a data driver and a display panel. The driving controller is configured to determine an average load of a unit area based on an average grayscale value of the unit area and a pixel area ratio of the unit area, to determine a temperature diffusion load of the unit area based on average loads, temperature diffusion ratios and weight ratios of adjacent unit areas adjacent to the unit area and to compensate input image data based on the average load of the unit area and the temperature diffusion load of the unit area to generate a compensated data signal. The data driver is configured to convert the compensated data signal into a data voltage. The display panel is configured to display an image based on the data voltage.