Array Substrate Layout for Longer Pixel Charging in TFT-LCDs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pixel architectures for TFT-LCDs, such as Single, Dual, and Triple Gate designs, face challenges in balancing the number of data driver ICs and pixel charging time, particularly in ultra-large high-resolution displays, leading to increased costs and potential picture quality issues.
Innovation Solution
An array substrate design with alternating sub-pixels of different colors in columns, using two data lines per column and alternating scan lines every two rows, reducing the number of data driver ICs and increasing pixel charging time while maintaining picture quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If Single Gate pixel architecture is used, then the number of data driver ICs is reduced, but pixel charging time is insufficient
Solution Approach 1:
The patent divides each pixel into multiple sub-pixels (first sub-pixel and second sub-pixel) with different display colors, and assigns different data lines to different sub-pixels. This segmentation allows parallel data transmission to multiple sub-pixels simultaneously, increasing the effective charging time without requiring additional data driver ICs.
Solution Approach 2:
The patent introduces a temporal dimension by alternately selecting different data lines (first data line and second data line) for different sub-pixels within the same pixel row. This allows the charging process to extend beyond the traditional single data line constraint, effectively increasing charging time without adding hardware complexity.
2Duration of action of moving object
If Dual Gate pixel architecture is used, then pixel charging time is increased, but the number of data driver ICs increases
Solution Approach 1:
The patent merges the functionality of multiple data lines into a single data line group that serves multiple sub-pixels. By alternately selecting between the first data line and the second data line for different sub-pixels, the system achieves parallel charging capability without requiring separate data driver ICs for each data line, thus reducing device complexity while maintaining extended charging time.
3Manufacturing precision
If Triple Gate pixel architecture is used, then picture quality is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies different data lines to different sub-pixels based on their specific display color requirements. Each sub-pixel receives data from the most appropriate data line (first or second) to optimize its charging characteristics. This localized optimization improves picture quality by ensuring each sub-pixel is charged optimally without requiring complex global control systems.
Data Source
AI summary
Provided are an array substrate, a driving method thereof, a display panel, and a display apparatus. The array substrate includes: pixel groups including two sub-pixels arranged in column direction, each column of pixel groups including sub-pixels of display colors set alternately, each sub-pixel in same row having same display color; data line groups including a first, second data lines extending in column direction, each column of pixel groups corresponding to one data line group, the first, second data lines in each data line group on opposite sides of each column of pixel groups in row direction; the first data line electrically connected to one sub-pixel in each pixel group of corresponding column, the second data line electrically connected to other sub-pixel in each pixel group; scan lines electrically connected to sub-pixels in corresponding rows, each row of scan line and each row of pixel groups arranged alternately in column direction.