OLED Image Object Shifting to Reduce Burn-In Edge Artifacts
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Solution Overview
Problem
Image display apparatuses with OLED panels suffer from degradation issues such as burn-in, leading to black areas on the screen edges when image shifting is performed to reduce degradation, as seen in existing technologies.
Innovation Solution
The apparatus employs a signal processing device that varies the separation distance and direction of objects in an image over time, adjusting their sizes and positions to maintain balance and reduce degradation, thereby minimizing the occurrence of black areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire image moves in the same direction to reduce degradation, then degradation is reduced, but black areas occur on the edges of the screen
Solution Approach 1:
The image is divided into multiple objects, and each object is shifted in a different direction rather than moving the entire image uniformly. This segmentation approach allows different regions to be shifted independently, preventing the formation of black areas on screen edges while still achieving degradation reduction
Solution Approach 2:
Different objects in the image are shifted by different distances in different directions, creating an asymmetric shift pattern. This asymmetric treatment of image elements ensures that no single edge consistently experiences black areas, while still providing effective degradation reduction through varied pixel displacement
2Device complexity
If objects are separated by a fixed distance, then image processing is simple, but balance between objects in the image deteriorates
Solution Approach 1:
The separation distance between objects is made dynamic rather than fixed. The signal processing device adjusts the separation distance based on object characteristics and position, allowing the system to maintain proper object balance while adapting to different image content. This dynamic adjustment prevents excessive complexity by using adaptive rather than purely fixed or fully variable parameters
Data Source
AI summary
The present disclosure relates to an image display apparatus. An image display apparatus according to an embodiment of the present disclosure includes: a display including an organic light emitting diode (OLED) panel; and a signal processing device to output an image signal to the display, wherein, upon displaying a plurality of objects apart from each other, the signal processing device is configured to: separate, at a first time, a first object and a second object of the plurality of objects by a first distance; and separate, at a second time after the first time, the first object and the second object by a second distance different from the first distance. Accordingly, it is possible to maintain balance between the objects in the image while reducing degradation.