Display Driver Critical-Frame Switching for Crosstalk Reduction
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Solution Overview
Problem
Display devices without a timing controller (TCON) face challenges in detecting and mitigating horizontal and vertical crosstalk during critical frames, leading to increased load and degraded image quality.
Innovation Solution
Implement a driving method for the driver that includes calculating absolute differences in sub-pixel data across scan lines, defining gray scale and line number variations, and adjusting the driving state based on threshold comparisons to manage critical frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a timing controller (TCON) is used to execute pattern detection mechanism, then crosstalk detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the pattern detection function from the timing controller and relocates it to the data driver. This allows crosstalk detection capability to be maintained while reducing device complexity and eliminating the need for a separate TCON component.
Solution Approach 2:
The data driver is given additional functionality to perform pattern detection in addition to its primary data transmission role. This multi-functionality approach eliminates the need for a dedicated TCON while maintaining crosstalk detection capability.
2Object-affected harmful factors
If pattern detection mechanism is implemented, then crosstalk problem is reduced, but load on display device increases
Solution Approach 1:
The patent implements partial pattern detection by focusing on specific critical patterns rather than analyzing all possible patterns. This selective approach reduces the computational load on the display device while still effectively detecting and mitigating crosstalk problems.
Solution Approach 2:
The data driver performs pattern detection using its own resources and capabilities, eliminating the need for additional processing power from the display device. This self-service approach reduces the overall load on the display device while maintaining effective crosstalk detection.
3Device complexity
If TCON-less design is adopted to reduce costs, then device complexity is reduced, but pattern detection capability is lost
Solution Approach 1:
The patent extracts the pattern detection function from the TCON and embeds it within the data driver. This maintains pattern detection capability while achieving TCON-less design and reducing device complexity.
Solution Approach 2:
The patent merges the pattern detection function with the data driver's existing functionality. This combination allows the data driver to perform both data transmission and pattern detection, maintaining detection capability while eliminating the need for a separate TCON.
Data Source
AI summary
A driving method for a driver of an electronic device includes steps of: receiving a plurality of frame data including a plurality of sub-pixel data, each sub-pixel data including a plurality of row sub-pixel data, wherein each row sub-pixel data corresponds to a portion of a plurality of sub-pixels corresponding to one of the plurality of scan lines; and performing calculation and comparison to determine whether one of the plurality of frame data is a critical frame data or a non-critical frame data, wherein, when P consecutive frame data is critical frame data, and P is greater than or equal to a threshold, the driver is switched from a first driving state to a second driving state, or maintained in the second driving state.