Display Panel Data Line Grouping to Reduce Crosstalk
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Solution Overview
Problem
Conventional LCD display panels face challenges in maintaining adequate charge time for pixels at higher frame rates or resolutions, leading to image distortion and increased crosstalk due to line crossings, which result in color washout and increased costs.
Innovation Solution
The display panel is designed with data lines grouped into multiple groups, where each group has N data lines (N ≥ 3) that cross over a portion of the scan lines, ensuring that each pixel is directly coupled to data lines without crossing, thereby avoiding cross-over capacitances and crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the frame rate is increased to improve image quality, then the image quality is improved, but the charge time of each pixel decreases leading to insufficient charging
Solution Approach 1:
The pixel array is divided into multiple pixel rows that can be charged in parallel through multiple data lines. By segmenting the charging process across multiple data lines (e.g., 4 data lines for 4 pixel rows), the total charging time is reduced while maintaining adequate charge time per pixel, enabling higher frame rates without sacrificing image quality.
Solution Approach 2:
Multiple data lines are combined to charge multiple pixel rows simultaneously during the same scan period. This merging of charging operations across parallel data lines effectively multiplies the charging capacity, allowing the display to maintain adequate charge time even at higher frame rates where traditional single-data-line approaches would fail.
2Ease of operation
If data lines cross over scan lines to reach all pixels, then all pixels can be connected, but crosstalk and color washout occur due to cross-over capacitances
Solution Approach 1:
The display panel is segmented into multiple independent data line groups, each serving specific pixel rows. This segmentation allows data lines to be routed to their target pixels without crossing other data lines or scan lines, eliminating cross-over capacitances and preventing crosstalk while maintaining complete pixel connectivity.
Solution Approach 2:
The routing architecture transitions from a two-dimensional crossing pattern to a multi-layered non-crossing configuration. Data lines are distributed across different spatial zones and scan line intervals, allowing them to reach their destination pixels without intersecting other conductive elements, thereby eliminating the harmful cross-over capacitances.
Data Source
AI summary
A display panel including a plurality of scan lines, a plurality of data lines, and a plurality of pixels is provided. The data lines are disposed substantially perpendicular to the scan lines Each of the pixels is electrically connected with the corresponding data line and the corresponding scan line and the pixels are arranged as an array. The data lines are grouped into a plurality of groups and each of the groups is disposed between two adjacent pixel columns and has N data lines, where N is a positive integer greater than or equal to 3. A portion of the data lines of at least a first group among the groups cross over a portion of the scan lines. The rest data lines of the first group cross over all the scan lines.