Liquid Crystal Display Inversion Control Grouping
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Solution Overview
Problem
Conventional liquid crystal display devices face issues with image quality deterioration and flicker generation due to frequent inversion control when displaying patterns with high contrast or movement, leading to display errors and noise, especially when recognizing error patterns based on predetermined settings.
Innovation Solution
A liquid crystal display device and method that employs group control of dynamic polarity control (DPC), where image data is grouped into channels for optimized inversion control, determining whether each group is suitable for horizontal-1-dot or horizontal-2-dot inversion, allowing for more precise control and reduced data variation, thereby improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inversion control is frequently converted to prevent flicker and improve image quality, then image quality is improved, but pattern recognition errors increase and display errors occur
Solution Approach 1:
The patent applies local quality by dividing the display into multiple groups (first group and second group) with different inversion control strategies. The first group uses one inversion control method while the second group uses another inversion control method, allowing each region to be optimized for its specific content characteristics rather than applying a uniform inversion strategy across the entire display.
Solution Approach 2:
The patent segments the display into multiple groups that can be controlled independently. By dividing the display into a first group and a second group with different inversion control methods, the system can handle different pattern types (such as high-contrast patterns vs. other patterns) in different regions without causing unnecessary inversion conversions and pattern recognition errors.
2Stability of the object's composition
If dot inversion control is used to drive neighboring pixels with different polarities, then flicker is reduced, but severe noise and flicker are generated when specific frame patterns are displayed
Solution Approach 1:
The patent applies local quality by selecting different inversion control methods for different groups. The first group uses an inversion control method suitable for certain pattern types, while the second group uses a different inversion control method suited for other pattern types. This prevents the generation of severe noise and flicker that would occur if dot inversion control was applied uniformly across all displays, especially when specific frame patterns are shown.
3Reliability
If inversion control is converted frequently based on pattern recognition, then image quality is improved, but data variation increases and more errors occur
Solution Approach 1:
The patent segments the display into multiple groups with different inversion control strategies. By dividing the display into a first group and a second group, the system can maintain more stable inversion control for each group rather than frequently converting between different inversion methods across the entire display, thereby reducing data variation and associated errors.
Solution Approach 2:
The patent implements dynamic inversion control where the inversion control method is selected based on the displayed content. The system dynamically switches between different inversion control methods for different groups depending on the pattern being displayed, which optimizes image quality while controlling data variation through intelligent, content-aware decision making.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces the frequency of pattern recognition errors and improves image quality by allowing more specific control over inversion driving, minimizing noise and flicker, especially in areas with high data variation, and maintaining optimal polarity control.
Implementation Method 1
a liquid crystal layer having dielectric anisotropy is formed between an upper substrate and a lower substrate
Implementation Method 2
an electric field density formed on the liquid crystal layer is adjusted and molecular arrangement of the liquid crystal material is converted
Data Source
AI summary
A liquid crystal display device includes a liquid crystal panel including a plurality of gate lines (GL1 to GLn) data lines (DL1 to DLm) and a plurality of pixel areas; a timing controller arranging the external input image data to be proper to the driving of the liquid crystal panel, generating a gate control signal (GCS) and a data control signal (DCS), and grouping the arranged image data into a plurality of groups each having a plurality of controller channels, and outputting a group control signal (HINV_m) by determining whether the arranged image data for each group is proper to horzintal-1-dot inversion or horizontal-2-dot inversion; a gate driver driving the plurality of the gate lines of the liquid crystal panel based on the gate control signal (GCS) from the timing controller; and a data driver grouping output terminals into a plurality of groups.