Timing Controller Virtual Sub-Pixel Driving Signal Adjustment
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Solution Overview
Problem
Conventional LCD panels face display issues due to inappropriate or erroneous driving signals for virtual pixels, leading to problems like bright lines on the side of the display.
Innovation Solution
A timing controller is designed to drive a display panel with a virtual sub-pixel by temporarily storing grayscale information, generating a histogram of first and third sub-pixels, comparing adjacent pixel grayscale information, and adjusting the driving signal for the virtual sub-pixel based on the histogram, ensuring it matches either the signal of a nearby third sub-pixel or the signal of the most numerous third sub-pixels in the histogram.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a virtual sub-pixel is added to the display panel, then the display area is increased, but display problems such as bright lines appear due to inappropriate driving signals
Solution Approach 1:
The patent introduces a timing controller as an intermediary device between the signal source and the display panel. This controller generates appropriate driving signals for the virtual sub-pixel by analyzing grayscale information from adjacent real sub-pixels and comparing it with historical data, thereby mediating the conflict between expanding display area and maintaining display quality.
Solution Approach 2:
The patent implements preliminary action by pre-storing grayscale information of sub-pixels in a buffer and pre-calculating the optimal driving signals for virtual sub-pixels before actual display. The histogram generating unit prepares statistical data in advance, and the virtual sub-pixel driving unit uses this pre-processed information to generate appropriate driving signals, preventing display artifacts before they occur.
2Stability of the object's composition
If the driving signal of the virtual sub-pixel is set to be the same as the adjacent third sub-pixel, then the display consistency is improved, but the adaptability to different grayscale distributions is reduced
Solution Approach 1:
The patent applies dynamics by making the driving signal generation adaptive rather than static. The virtual sub-pixel driving unit dynamically adjusts the driving signal based on real-time grayscale information from adjacent sub-pixels and historical histogram data. This allows the system to maintain display consistency while adapting to different grayscale distributions through conditional logic that selects from multiple possible driving signals.
Solution Approach 2:
The patent implements feedback mechanisms by continuously monitoring the grayscale information of adjacent sub-pixels and using this information to adjust the driving signal for the virtual sub-pixel. The histogram generating unit provides feedback about the distribution of grayscale values, allowing the system to learn from past display patterns and optimize future signal generation to maintain both consistency and adaptability.
3Measurement precision
If the timing controller uses histogram analysis and grayscale comparison to determine the driving signal, then the display accuracy is improved, but the controller complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the complex task of virtual sub-pixel driving into distinct functional modules: a buffer unit for storing grayscale information, a histogram generating unit for statistical analysis, a grayscale comparing unit for adjacent pixel comparison, and a virtual sub-pixel driving unit for signal generation. This modular segmentation manages complexity by organizing functions into separate, manageable units while maintaining high display accuracy through their coordinated operation.
Data Source
AI summary
A timing controller, a display panel and a driving method are proposed. The display panel includes a display sub-pixel and a virtual sub-pixel. The display sub-pixel includes first sub-pixels, second sub-pixels and third sub-pixels. If the grayscale information of the two adjacent first sub-pixels are the same, then a driving signal of the virtual sub-pixel is the same as a driving signal of a third sub-pixel close to the virtual sub-pixel; otherwise, the driving signal of the virtual sub-pixel is the same as a driving signal of the third sub-pixels, which are outnumbered in the histogram.