Dynamic FRC Pattern Selection for LCD Picture Quality
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Solution Overview
Problem
Conventional liquid crystal display (LCD) devices maintain a constant frame rate control (FRC) data pattern regardless of gray scale differences between frames, leading to deteriorated picture quality.
Innovation Solution
A display device and method that dynamically select and apply FRC data patterns based on gray scale differences between consecutive frames, using a processor to output most-significant data and a data driver to modulate gray scale values, increasing the number of data elements at different ratios to improve image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a constant FRC data pattern is maintained regardless of gray scale differences, then the device complexity is reduced, but the picture quality deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from a static, constant FRC data pattern to a dynamic, adaptive pattern that changes based on gray scale differences between consecutive frames. The system calculates gray scale differences and selects appropriate FRC data patterns accordingly, making the control mechanism responsive to image content variations while maintaining manageable complexity through algorithmic automation.
2Manufacturing precision
If the number of data elements in FRC pattern is increased to improve picture quality, then the manufacturing precision improves, but the device complexity increases
Solution Approach 1:
The patent applies parameter changes by varying the number and distribution of data elements in FRC patterns based on gray scale difference thresholds. Instead of using a fixed pattern with maximum data elements, the system adjusts the pattern parameters (number of data elements, their distribution ratios) according to the calculated gray scale differences, optimizing the balance between picture quality and pattern complexity for each specific imaging condition.
Data Source
AI summary
A display device includes a processor for outputting a most-significant m-bit data from an n-bit data and one of a plurality of patterns indicative of first and second locations of a first modulation data in first and second consecutive frames, respectively, in accordance with least significant (n−m) bits of the n-bit data, and a data driver for generating a gray scale value corresponding to the most significant m-bit data and modulating the gray scale value in accordance with the one of the plurality of the patterns, wherein the number of the first location increases at different ratios based on the gray scale.