Image Corrector for Display Device Thermal Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices experience performance deterioration due to heat deterioration of certain pixels when continuously outputting the same image, and existing methods for pixel shifting do not effectively prevent after-image effects without requiring additional memory.
Innovation Solution
An image corrector is used within a display device to reconfigure image data without separate memory, employing a frame data counter, shift determiner, area determiner, and image data generator to shift and resize image areas, thereby reducing thermal deterioration and after-image effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image data is continuously output from the same pixels, then display performance is maintained, but heat deterioration of pixels occurs
Solution Approach 1:
The patent implements periodic image shifting at set cycles to prevent continuous activation of the same pixels. By periodically moving the displayed image to different pixel locations, the system allows previously active pixels to cool down while new pixels take over, thereby preventing heat accumulation and deterioration of specific pixel regions.
Solution Approach 2:
The system dynamically shifts image positions and adjusts display parameters based on accumulated display time and pixel usage patterns. This dynamic adjustment ensures that no single pixel region remains continuously active, distributing thermal load across different pixel areas and preventing localized overheating.
2Reliability
If pixel shifting is implemented to prevent heat deterioration, then pixel durability is improved, but after-image effects occur
Solution Approach 1:
The patent applies different processing strategies to different regions of the image. By analyzing local image characteristics and pixel usage patterns, the system performs targeted shifting and parameter adjustments in specific regions where after-image effects are most likely to occur, while maintaining stable display in regions where it is not necessary, thus reducing after-image effects without compromising overall image quality.
Solution Approach 2:
The system dynamically changes display parameters such as brightness, contrast, and pixel activation patterns during the shifting process. By adjusting these parameters locally and temporarily during transitions, the system minimizes the visual impact of pixel shifting while still achieving the goal of preventing heat deterioration and reducing after-image effects.
3Productivity
If separate memory is used to store image data before and after shifting, then new image data can be generated, but device complexity and memory requirements increase
Solution Approach 1:
The patent merges the functions of storing image data before and after shifting into a single memory structure. By using one memory unit to hold both the current and shifted image data simultaneously, the system eliminates the need for separate memory allocations, thereby reducing device complexity and memory requirements while maintaining the capability to generate and display shifted image data.
Solution Approach 2:
The memory unit is designed to serve multiple functions: storing current image data, storing shifted image data, and facilitating the transition between them. This multi-functional memory structure replaces what would traditionally require separate specialized memory units, simplifying the overall system architecture while preserving full image processing and shifting capabilities.
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
There is provided an image corrector including a shift determiner configured to determine a shift direction and a shift amount of an image corresponding to first image data, an area determiner configured to divide the image into a plurality of areas and, in accordance with the shift direction, to determine a first area of the plurality of areas as a reduction area and a second area of the plurality of areas as an enlargement area, and an image data generator configured to set second image data corresponding to the shift amount of the image corresponding to the first area.