Display Timing Controller Dynamic Output Enable Adjustment
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Solution Overview
Problem
Display devices face challenges in optimizing output enable values for different color patterns, leading to issues like vertical moire and horizontal block phenomena due to inadequate charging rates.
Innovation Solution
A display device with a timing controller that identifies color patterns and sets optimal output enable values, adjusting scan signal intervals to enhance charging rates and reduce these phenomena.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed output enable value is used for all color patterns, then the device complexity is reduced, but the charging rate becomes insufficient for certain patterns causing display artifacts
Solution Approach 1:
The patent implements dynamic adjustment of the output enable value based on the detected color pattern. The timing controller changes the output enable value from a first value (for monochromatic patterns) to a second value (for white patterns), allowing the system to adapt to different display requirements and maintain reliable charging rates across various patterns.
Solution Approach 2:
The patent changes the output enable parameter based on the color pattern detected in the image signal. By switching between different output enable values (first output enable value for monochromatic, second for white), the system optimizes the charging rate for each pattern type without requiring complex hardware modifications.
2Reliability
If the output enable value is increased to improve charging rate, then the charging rate is enhanced, but vertical moire and horizontal block phenomena occur
Solution Approach 1:
The patent applies different output enable values for different color patterns rather than using a uniform value across all patterns. This localized optimization ensures that each pattern type receives the appropriate charging rate, preventing display artifacts like vertical moire and horizontal block phenomena while maintaining efficient charging where needed.
3Reliability
If the scan signal interval is adjusted to optimize charging rate, then the charging rate is improved, but the device complexity increases
Solution Approach 1:
The scan driver dynamically adjusts the interval between turn-on signals based on the output enable value received from the timing controller. This dynamic adjustment allows optimization of the charging rate for different color patterns without requiring complex hardware modifications, as the timing controller already detects the color pattern and provides appropriate control signals.
Data Source
AI summary
A display device capable of setting an optimal output enable value according to a color pattern and a method for driving the display device. A timing controller is configured to receive an image signal from an external source, identify a color pattern and set an output enable value corresponding to the identified color pattern. A scan driver is configured to receive the output enable value and generate a first scan signal having a first turn-on signal and a second scan signal adjacent to the first scan signal and having a second turn-on signal. The scan driver may adjust an interval between the first turn-on signal and the second turn-on signal based on the output enable value.