OLED Display Burn-In Compensation via Pixel Segmentation
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Solution Overview
Problem
Organic light emitting diode (OLED) displays experience residual image or burn-in due to hysteresis characteristics of thin film transistors and variations in OLED driving time across pixels, leading to defects on the screen.
Innovation Solution
An electronic device with a processor that generates and groups images for different types of pixels, analyzes these images to create burn-in maps, and stores them in memory to compensate for residual images by displaying images that have been pre-processed to mitigate burn-in effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If burn-in compensation is performed using a single unified map for all pixels, then device complexity is reduced, but manufacturing precision and compensation accuracy deteriorate due to ignoring pixel-type variations
Solution Approach 1:
The patent segments the display panel into multiple pixel types (first pixels and second pixels with different characteristics) and generates separate burn-in maps for each pixel type. This segmentation allows the system to account for variations in pixel characteristics while maintaining manageable complexity through organized data structures and processing routines.
2Manufacturing precision
If high-resolution burn-in maps are generated for all pixels, then compensation accuracy is improved, but memory usage and data computation increase significantly
Solution Approach 1:
The patent divides the display panel into multiple pixel types and generates separate burn-in maps for each type. This segmentation reduces the total data volume by grouping pixels with similar characteristics, allowing the system to store and process only the necessary data for each pixel type rather than treating every pixel individually.
Solution Approach 2:
The patent generates burn-in maps at appropriate resolutions for each pixel type without unnecessarily increasing data volume. By applying partial action - creating maps only where needed for each pixel type rather than uniform high-resolution maps for all pixels - the system achieves sufficient compensation accuracy while controlling memory usage.
3Speed
If burn-in compensation is performed without considering pixel characteristics, then processing speed is improved, but compensation accuracy deteriorates due to uniform treatment of different pixel types
Solution Approach 1:
The patent segments pixels into different types based on their characteristics and processes each type with its corresponding burn-in map. This segmentation enables the system to maintain processing efficiency through organized routines while achieving accurate compensation by applying the appropriate map for each pixel type.
Solution Approach 2:
The patent applies local quality by using different burn-in maps tailored to specific pixel types. Each pixel type receives customized compensation based on its characteristics, ensuring high accuracy for each local group while maintaining overall processing efficiency through systematic organization.
Data Source
AI summary
An electronic device and a method for predicting and compensating for a residual image on a display are provided. The electronic device includes a display comprising a plurality of first pixels and a plurality of second pixels, a memory, and a processor. The processor configured to generate an image to be displayed through the display, group the image into a first image corresponding to the first pixels, and a second image corresponding to the second pixels, generate a first burn-in map by analyzing the first image, generate a second burn-in map by analyzing the second image, store the first burn-in map in a first memory region of the memory, store the second burn-in map in a second memory region of the memory, and display, through the display, the image having a burn-in or a residual image compensated for using the first burn-in map and the second burn-in map.