Display Processor Pattern-Based Sensing to Prevent Horizontal Lines
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Solution Overview
Problem
Display devices exhibit visible dark horizontal lines during low grayscale image display due to changes in transistor characteristics, necessitating a method to mitigate this visibility.
Innovation Solution
A processor with an interface circuit, pattern detecting circuit, brightness detecting circuit, and real-time sensing circuit to control pixel sensing based on panel brightness and light emission ratios, adjusting sensing operations to prevent horizontal line visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If real-time sensing is continuously performed to compensate for transistor characteristic changes, then display quality is improved, but horizontal lines become visible during low grayscale image display
Solution Approach 1:
The sensing operation is dynamically adjusted based on detected patterns and brightness conditions. The processor selectively performs real-time sensing only when necessary (when no specific pattern is detected and brightness conditions are met), and suspends sensing when patterns are detected that could cause horizontal lines, thereby adaptively resolving the contradiction between maintaining display quality and preventing artifacts.
Solution Approach 2:
The system changes the operational parameters of the sensing circuit based on detected image patterns and brightness levels. By monitoring the ratio of light-emitting pixels and panel brightness value, the system adjusts whether sensing operations are performed, effectively controlling the transition between sensing and non-sensing states to prevent horizontal line visibility while maintaining display quality.
2Object-affected harmful factors
If pattern detection and brightness detection are added to control sensing operations, then horizontal line visibility is reduced, but device complexity increases
Solution Approach 1:
The processor is designed to perform multiple functions: it detects patterns in image data, detects brightness levels by analyzing the ratio of light-emitting pixels, and controls the sensing operations based on these detections. By integrating these multiple functions into a single processor unit, the system reduces horizontal line visibility without proportionally increasing overall device complexity.
Solution Approach 2:
The processor uses the existing image data and pixel information already available in the display system to perform pattern detection and brightness detection. Rather than requiring completely separate detection systems, the processor leverages existing resources (image data, pixel emission states) to make sensing decisions, thereby minimizing additional complexity while achieving the goal of reducing horizontal line visibility.
Data Source
AI summary
A processor including: an interface circuit to receive first image data and convert the first image data into second image data; a pattern detecting circuit to detect a pattern in the first or second image data; a brightness detecting circuit to detect a panel brightness value, and to detect a ratio of pixels emitting light; and a real-time sensing circuit, wherein when the pattern is not detected, the real-time sensing circuit performs/stops real-time sensing of the pixels based on whether the panel brightness value is within a range and the ratio of pixels emitting light is greater than or equal to a first threshold; and when the pattern is detected, the real-time sensing circuit performs/stops the real-time sensing of the pixels based on whether the panel brightness value is within the range and the ratio of pixels emitting light is greater than or equal to a second threshold.