OLED Pixel Compensation via Aging-Based Sampling
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Solution Overview
Problem
Organic Light-Emitting Diode (OLED) display screens age irreversibly, leading to degraded display uniformity and issues like afterimages, as the organic material degrades over time, causing uniformity problems in displaying images.
Innovation Solution
A pixel compensation method that involves sampling image pixel values to determine target sampling data, calculating aging duration based on this data, and adjusting pixel values using compensation data to mitigate the effects of aging, thereby improving display uniformity and reducing afterimages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pixel values are adjusted using compensation data based on aging duration, then display uniformity is improved, but device complexity increases
Solution Approach 1:
The system performs preliminary sampling of pixel values and calculation of aging duration before actual display output. Compensation data is pre-calculated based on the sampled pixel values and aging duration, allowing the display to maintain uniformity without real-time complex computations during operation.
Solution Approach 2:
The patent introduces compensation data as an intermediary element that mediates between the raw pixel values and the final displayed image. This compensation data, derived from sampling and aging calculations, acts as a bridge to correct display uniformity issues without requiring direct modification of the display hardware or complex real-time processing.
2Manufacturing precision
If pixel sampling and compensation processing is performed, then display uniformity is improved, but processing time increases
Solution Approach 1:
The system performs partial sampling of pixel values rather than processing all pixels comprehensively. By sampling representative pixel values and calculating compensation data based on this subset, the system achieves sufficient display uniformity correction without the time cost of complete pixel-level processing.
Solution Approach 2:
Sampling and compensation calculations are performed in advance before the actual display refresh cycle. This preliminary processing allows the compensated pixel values to be ready for display without adding latency to the main display operation, effectively hiding the processing time overhead.
Data Source
AI summary
A pixel compensation method, a pixel compensation apparatus and a pixel compensation system are disclosed. The pixel compensation method includes: sampling pixel values of an image to be displayed on a display screen to obtain target sampling data; transmitting the target sampling data; receiving pixel compensation data, wherein the pixel compensation data is determined according to an aging duration of the display screen which is determined based on the target sampling data; and compensating for the pixel values of the image to be displayed on the display screen based on the pixel compensation data. The pixel compensation method includes: receiving target sampling data obtained by sampling pixel values of an image to be displayed on a display screen; determining an aging duration of the display screen based on the target sampling data; determining pixel compensation data based on the aging duration; and transmitting the pixel compensation data.