Display Panel Crosstalk Compensation via Positional Luminance Adjustment
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Solution Overview
Problem
Display apparatuses face issues with crosstalk generation due to uneven luminance in specific patterns, leading to suboptimal display quality, as certain areas fail to achieve target luminance levels.
Innovation Solution
A display apparatus and method that determine the presence of a display quality deteriorating pattern, calculating and applying specific compensation values to areas around a main deteriorating pattern using gains based on its position and stored initial values, to adjust data voltages and prevent crosstalk by optimizing luminance across the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display panel displays a specific pattern, then the display can show images based on input image data, but crosstalk occurs and luminance becomes uneven in certain areas
Solution Approach 1:
The patent applies different compensation values to different areas surrounding the main area based on their specific characteristics. The first compensation value is applied to the first area and the second compensation value is applied to the second area, making each region's luminance adjustment tailored to its local needs rather than using a uniform approach.
Solution Approach 2:
The patent changes the data voltage parameter by adding compensation values to the input image data. The driving controller calculates compensation values based on the position and characteristics of the main area, then modifies the luminance parameter of surrounding areas to compensate for crosstalk effects.
2Illumination intensity
If compensation values are applied to all areas, then luminance uniformity improves, but the complexity of the driving controller increases
Solution Approach 1:
The patent segments the display area into a main area and multiple surrounding areas (first area, second area, etc.), treating each segment differently. This segmentation allows the system to apply compensation only where needed rather than uniformly across the entire display, reducing unnecessary computational complexity.
Solution Approach 2:
The patent applies compensation values selectively to specific surrounding areas rather than to the entire display panel. By identifying and compensating only the areas affected by crosstalk from the main area, the system achieves the necessary luminance uniformity without the excessive complexity of processing the entire display.
Data Source
AI summary
A display apparatus includes a display panel, a driving controller, and a data driver. The display panel is configured to display an image based on input image data. The driving controller is configured to determine whether the input image data include a display quality deteriorating pattern. The driving controller is configured to determine a first compensation value for compensating a first area disposed at a first side of a main area of the display quality deteriorating pattern and a second compensation value for compensating a second area disposed at a second side of the main area opposite to the first side of the main area, according to a position of the main area. The data driver is configured to apply a data voltage to the display panel using the first compensation value and the second compensation value.