Display Device Image Sticking Removal via Local Luminance Adjustment
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Solution Overview
Problem
Existing display devices, particularly OLEDs, suffer from image sticking (or retention) issues due to deterioration, and existing methods only slow down the generation of image sticking but do not effectively remove it once it occurs.
Innovation Solution
A method and system for a display device that includes a controller to detect and remove image sticking by adjusting the luminance of surrounding areas using a graphical user interface (GUI) with an adjustment bar and indicators, allowing users to select and correct image sticking areas, either locally or through wireless communication with external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing prevention algorithms are applied to decelerate image sticking generation, then the rate of image sticking occurrence is reduced, but the image sticking cannot be removed once generated
Solution Approach 1:
The patent converts the harmful effect of image sticking into a beneficial detection opportunity. By analyzing the difference between current and reference display screens, the system automatically identifies image sticking areas and applies localized luminance adjustments to remove the afterimage, transforming a permanent defect into a correctable condition through the display device itself
Solution Approach 2:
The patent changes the luminance parameter of the display screen in the identified image sticking area. By adjusting the luminance level locally in the affected region, the system eliminates the visual persistence of the afterimage, allowing dynamic modification of display parameters to resolve the image sticking problem
2Reliability
If the entire screen is processed to remove image sticking, then comprehensive coverage is achieved, but processing time and energy consumption increase
Solution Approach 1:
The patent applies local quality by processing only the specific area where image sticking occurs rather than the entire screen. The system identifies the coordinates of the image sticking area and applies luminance adjustment exclusively to that region, maintaining high processing efficiency while achieving effective removal of the afterimage
Solution Approach 2:
The patent segments the display screen into multiple regions by comparing current and reference images to identify the specific location of image sticking. This segmentation allows the system to isolate and process only the affected area, reducing overall processing time and energy consumption while maintaining comprehensive coverage of problematic regions
Data Source
Figure 1(a)~1(b)
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AI summary
A method for remove image sticking in a display device is disclosed. Herein, the display device includes a display unit, and a controller, and the controller may be configured to execute an application for removing image sticking, to control the display unit to display a specific screen, to detect an image sticking area from the specific screen, and to adjust a luminance of the display unit corresponding to a surrounding area of a detected image sticking area.