Display Device Sub-Pixel Arrangement for Data Line Reduction
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Solution Overview
Problem
As the resolution of display devices increases, the number of data lines and the size of the data driving portion also increase, leading to higher manufacturing costs and reduced data charging time, which compromises display quality.
Innovation Solution
A display device configuration where sub-pixels alternately share gate lines and data lines, reducing the number of data lines and the size of the data driving portion, while ensuring sufficient data charging time by applying data voltages to sub-pixels connected to multiple gate and data lines in alternating sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If data signals are supplied to pixel regions at both sides of a data line through the data line, then the number of data lines is reduced, but the data charging time is considerably reduced
Solution Approach 1:
The pixel rows are divided into two groups: odd-numbered rows (1st, 3rd, 5th, etc.) and even-numbered rows (2nd, 4th, 6th, etc.). Odd rows are driven by one gate line while even rows are driven by another gate line. This segmentation allows different data charging schedules for different row groups, ensuring that each data line serves pixels sequentially rather than simultaneously, thereby maintaining sufficient charging time while reducing the total number of data lines required.
Solution Approach 2:
The gate lines are activated in alternating periodic cycles: the first gate line drives odd rows during one period, then the second gate line drives even rows during the next period. This periodic alternation ensures that data lines have adequate time to charge pixels in one row group before being reused for the next row group, resolving the time constraint while minimizing data line quantity.
2Measurement precision
If the number of pixels increases to increase resolution, then the number of data lines increases, but the manufacturing costs increase
Solution Approach 1:
Each data line is designed to serve multiple pixel rows sequentially rather than being dedicated to a single row. By alternating between odd and even row groups using different gate line activation periods, the same data line infrastructure supports the entire pixel array, reducing the total data line count and associated manufacturing costs while maintaining high resolution through increased pixel density.
Data Source
AI summary
A display device includes first and second gate lines extending in a first direction; first and second data lines extending in a second direction and crossing the first and second gate lines; and a first horizontal pixel row including first, second, and third sub-pixels sequentially arranged in the first direction, wherein the first sub-pixel is connected to the first gate line and the first data line, the second sub-pixel is connected to the second gate line and the first data line, and the third sub-pixel is connected to the first gate line and the second data line.