Display Device Compensation Using Stress Reduction Values
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Solution Overview
Problem
Existing display technologies face issues with uneven brightness and color cast due to differential attenuation of sub-pixels over time, which existing compensation methods fail to adequately address by not considering display off time, often leading to overcompensation.
Innovation Solution
A processor is coupled to a display panel to generate output data using compensation values and stress reduction values, calculated based on input data and operating factors, including display off time, to provide accurate compensation and prevent overcompensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing compensation methods are used without considering display off time, then compensation processing is simple, but overcompensation occurs leading to uneven brightness and color cast
Solution Approach 1:
The patent applies preliminary action by calculating and storing stress reduction values and compensation reduction values in advance based on display off time before actual compensation is needed. This allows the system to prepare compensation parameters proactively, enabling more accurate real-time compensation without excessive computational complexity during active display operation.
Solution Approach 2:
The patent implements feedback by using calculated stress values that incorporate display off time information to adjust compensation values dynamically. The system continuously monitors display conditions, calculates stress accumulation, and feeds this information back to modify compensation parameters, preventing overcompensation and achieving better brightness uniformity.
2Manufacturing precision
If compensation values are calculated without considering display off time, then processing speed is fast, but compensation accuracy deteriorates
Solution Approach 1:
The system performs preliminary calculations of stress reduction values and compensation reduction values based on display off time before actual compensation processing. This pre-computation approach allows the system to incorporate detailed timing information for accurate compensation without adding significant processing time during critical display operations.
Solution Approach 2:
The patent applies local quality by calculating compensation parameters specifically for regions or sub-pixels that have experienced different display off times. Instead of uniform processing, the system tailors compensation accuracy to local display conditions, providing higher precision where needed while maintaining efficient overall processing.
3Manufacturing precision
If uniform compensation is applied to all sub-pixels, then processing is simple, but differential attenuation of sub-pixels is not adequately addressed
Solution Approach 1:
The patent implements local quality by calculating individual stress reduction values and compensation reduction values for different sub-pixels based on their specific display off times and attenuation characteristics. This localized compensation approach addresses differential attenuation effectively while the pre-calculated values keep processing complexity manageable.
Solution Approach 2:
The system applies parameter changes by dynamically adjusting compensation values based on display off time parameters. The patent modifies compensation parameters according to actual display conditions, enabling differentiated compensation for various sub-pixels without requiring a completely complex algorithm structure.
Data Source
AI summary
A display device includes a display panel and a processor. The processor is coupled to the display panel. The processor is configured to generate first output data according to first input data and a first compensation value, generate a stress reduction value and a compensation reduction value according to the first input data, calculate a final stress value according to the first output data, at least one first operating factor, and the stress reduction value, calculate a second compensation value according to the final stress value and the compensation reduction value, and output second output data according to second input data, the second compensation value, and at least one second operating factor. The display panel receives the second output data to display according to the second output data.