Display Device Gate Data Line TFT Layout Voltage Shift Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices experience color-shift problems due to poor circuit design, leading to voltage shifts in common voltage, which result in crosstalk and inaccurate color and brightness display.
Innovation Solution
A novel display device configuration with specific layouts of gate and data lines, where certain intersections lack thin film transistors, and a compensation method using multiple data lines to balance voltage shifts, reducing the impact on common voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional circuit design with thin film transistors at all intersections is used, then complete pixel coverage is achieved, but voltage shift in common voltage occurs causing color-shift problems
Solution Approach 1:
The patent extracts (removes) thin film transistors from specific intersections where they are not needed for pixel operation. By removing TFTs from certain gate line/data line intersections, the circuit complexity is reduced while maintaining complete pixel coverage and eliminating voltage shift problems in the common voltage line.
Solution Approach 2:
The patent applies local quality by making the circuit configuration non-uniform across the display panel. Different regions have different TFT arrangements based on their specific needs - some intersections have TFTs while others don't, optimizing both color display accuracy and reducing unnecessary circuit complexity in areas where TFTs would cause voltage shifts.
2Manufacturing precision
If thin film transistors are disposed at all gate line and data line intersections, then all pixels are properly connected, but voltage shifts cause crosstalk and inaccurate color/brightness display
Solution Approach 1:
The patent converts the potentially harmful effect of having too many TFTs (which cause voltage shifts and crosstalk) into a benefit by strategically removing them from specific locations. This selective removal eliminates the harmful voltage shifts while maintaining proper pixel connections, turning the problem of excess TFTs into a solution for reducing crosstalk.
3Device complexity
If standard data line configuration is used, then simple routing is achieved, but voltage shifts in common voltage cannot be compensated
Solution Approach 1:
The patent makes data lines multi-functional by using them for both their primary function (transmitting data signals to pixels) and a secondary function (compensating for voltage shifts in the common voltage line). This is achieved by strategically placing TFTs at specific intersections to create compensation circuits, allowing data lines to serve dual purposes without significantly increasing routing complexity.
Data Source
AI summary
A display device includes a first gate line, a second gate line, a first data line and a second data line. The second gate line is disposed adjacent to the first gate line. The first gate line and the second gate line are disposed in parallel and extend in a first direction. The first data line and the second data line are disposed in parallel and extend in a second direction perpendicular to the first direction. There is no thin film transistor disposed adjacent to at least one of the following intersections: the intersection of the first gate line and the first data line; the intersection of the first gate line and the second data line; the intersection of the second gate line and the first data line; and the intersection of the second gate line and the second data line.