Timing Controller Dynamic Frame Compensation for Display Artifacts
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Solution Overview
Problem
As display panel sizes and operating speeds increase, the charging rate for each pixel is degraded in display apparatuses with a single driving circuit, and while panel dividing type displays improve charging rates, they suffer from artifacts at higher frame rates due to separate driving circuits for each divided panel.
Innovation Solution
A method of driving a display panel divided into areas, where a timing controller measures and compares the moving speed of objects between frames, adding high or low speed compensation frames based on reference speeds to improve display quality, using a Motion Estimation Motion Compensation (MEMC) scheme to generate data for compensation frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the display panel is divided into multiple areas driven by separate driving circuits, then the charging rate for each pixel is improved, but artifacts are caused when frame rate is increased
Solution Approach 1:
The display panel is divided into first and second areas driven by separate first and second driving circuits, allowing each circuit to independently charge pixels in its region. This segmentation improves the charging rate by parallelizing the driving operation across multiple regions simultaneously.
Solution Approach 2:
The patent dynamically adjusts the frame rate parameter based on moving speed detection. When an object moves faster than a reference speed, the frame rate is increased to prevent motion artifacts. This parameter change resolves the contradiction by adapting the display timing to match the charging capability of the divided driving circuits while maintaining image quality.
2Reliability
If the frame rate is increased to reduce motion artifacts, then the display quality is improved, but the charging rate degradation becomes more pronounced
Solution Approach 1:
The system dynamically adjusts the frame rate based on the detected moving speed of objects in the display scene. When objects move faster, the frame rate is increased to prevent artifacts; when objects are stationary or move slowly, the frame rate is reduced to allow adequate charging time. This dynamic adaptation resolves the contradiction between display quality and charging rate.
Solution Approach 2:
The patent employs a feedback mechanism where the moving speed of objects is continuously detected and used to adjust the frame rate. This closed-loop control ensures that the display quality is maintained at optimal levels while minimizing the impact on charging rate by only increasing frame rate when necessary.
3Device complexity
If a single driving circuit is used to simplify the device structure, then the device complexity is reduced, but the charging rate for each pixel is degraded
Solution Approach 1:
The display panel is divided into multiple driving regions, each controlled by a separate driving circuit. This segmentation enables parallel charging operations across different regions, significantly improving the overall charging rate while keeping each individual driving circuit relatively simple in structure.
Data Source
AI summary
A display panel is divided into multiple areas respectively driven by multiple drivers, and the multiple areas are adjacent to each other along a first direction. An object moves along the first direction between a first frame and a second frame and is displayed on the display panel. The moving speed of the object is compared with a reference speed. A main compensation frame is added between the first frame and the second frame. A first high speed compensation frame is added between the first frame and the main compensation frame when the moving speed is higher than or equal to the reference speed. A first low speed compensation frame is added between the first frame and the main compensation frame when the moving speed is lower than the reference speed, and the first low speed compensation frame is different from the first high speed compensation frame.