Display Image Processing for Static Picture Afterimage Prevention
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Solution Overview
Problem
OLED and LCD displays suffer from afterimages due to threshold voltage drift in OLED pixels and polarization effects in LCDs, leading to potential irreversible damage and reduced service life, especially when static images are displayed for extended periods.
Innovation Solution
A method for processing display images involves moving a movable region within the image display area, obtaining image feature values at different positions, and determining if the image is static to adjust brightness and prevent afterimages, thereby extending the display's service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the display continuously shows static images, then the image quality remains stable, but afterimages occur and the display service life is reduced
Solution Approach 1:
The patent implements periodic image rotation at predetermined time intervals to prevent afterimages. The display alternates between showing the static image normally and rotating the image periodically, ensuring that no single pixel location remains in the same state continuously, thus preventing threshold voltage drift accumulation while maintaining overall image quality.
Solution Approach 2:
The patent dynamically adjusts the display strategy based on time and image characteristics. When a static image is detected, the system automatically activates image rotation at predetermined intervals, transforming the static display into a dynamic one temporarily, and then returns to normal static display after rotation, thereby extending display service life without permanently affecting image quality.
2Reliability
If image rotation is performed to prevent afterimages, then display service life is extended, but the image may become distorted or misplaced
Solution Approach 1:
The patent performs preliminary detection to determine whether the displayed image is static before initiating image rotation. By预先 identifying static images through analysis of image characteristics, the system ensures that rotation is only applied when appropriate, preventing distortion of dynamic images while still protecting against afterimages from static content.
Solution Approach 2:
The patent implements a feedback mechanism where the display system continuously monitors the displayed content, detects static images, and automatically activates/deactivates image rotation based on the detection results. This closed-loop control ensures that image rotation is applied only when beneficial, maintaining image position accuracy while extending display service life.
Data Source
Figure 1A~1C
Figure 2~3
Figure 4A~4B
AI summary
A processing method for a display image in an image display region, a display image processing device, a display device, and a storage medium. A part of or the entire image display region (103) is a movable region (102). The display processing method comprises: in the case that the movable region (102) moves from a first position to a second position, obtaining a first image feature value of a display image displayed in the image display region (103) when the movable region (102) is located at the first position; obtaining a second image feature value of the display image displayed in the image display region (103) when the movable region (102) is located at the second position; and on the basis of the first image feature value and the second image feature value, determining whether the display image displayed in the image display region (103) is a static picture. The display image processing method can determine a static picture existing in an image rotation state, and can avoid the afterimage on a display, such that the service life of the display is prolonged.