Alternating Pixel Polarity Arrangement for Display Crosstalk Reduction
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Solution Overview
Problem
Liquid crystal display technologies face issues with horizontal crosstalk and moving line-stain phenomena, which affect image quality and cause perceived flicker due to brightness differences between frame periods.
Innovation Solution
The display apparatus is designed with a specific arrangement of gate and data lines, where pixels are grouped and connected to adjacent data lines in a alternating manner, ensuring equal numbers of positive and negative polarity pixels across rows and columns, preventing common voltage ripples and reducing brightness differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pixels are connected to data lines in a conventional manner, then the display structure is simple, but horizontal crosstalk and moving line-stain phenomena occur
Solution Approach 1:
The patent segments pixels into groups of 2i pixels connected to adjacent data lines in alternating manners. This segmentation strategy divides the pixel array into multiple sub-groups, where each group has a balanced connection pattern to data lines, thereby reducing the harmful crosstalk and line-stain effects while maintaining manufacturing simplicity
Solution Approach 2:
The patent employs an asymmetric connection pattern where pixels within each group are connected to adjacent data lines in alternating manners rather than uniform connections. This asymmetric design creates a balanced polarity distribution that cancels out common voltage ripples and eliminates horizontal crosstalk and moving line-stain phenomena
2Device complexity
If conventional pixel connection methods are used, then the device complexity is low, but brightness differences cause perceived flicker between frame periods
Solution Approach 1:
The patent designs pixel connections to achieve equipotentiality in voltage distribution. By grouping pixels and connecting them to adjacent data lines in alternating manners with equal numbers of positive and negative polarity pixels, the system maintains balanced voltage potentials across the display, preventing brightness differences and perceived flicker between frame periods
3Device complexity
If data voltage polarity is not balanced, then the driving scheme is simple, but common voltage ripples cause image quality degradation
Solution Approach 1:
The patent changes the connection parameter of pixels to data lines, transitioning from conventional one-to-one connections to grouped alternating connections. This parameter change creates a balanced polarity distribution where equal numbers of positive and negative polarity pixels are connected to adjacent data lines, thereby suppressing common voltage ripples and maintaining image quality stability
Data Source
AI summary
A display apparatus includes gate lines extending in a first direction, data lines extending in a second direction crossing the first direction, and pixels connected to the gate lines and the data lines. The pixels include pixels arranged in a k-th column between a k-th data line and a (k+1)th data line. The pixels arranged in the k-th column are arranged in a plurality of groups, and each of the groups includes 2i first pixels connected to the k-th data line and 2i second pixels connected to the (k+1)th data line. Successive ones of the pixels in each group are connected to the k-th data line and the (k+1)th data line in alternating manner.