Pixel Array Data Signal Transmission Line Configuration
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Solution Overview
Problem
The increasing resolution of LCD panels necessitates a higher number of gate drivers and source drivers, leading to expanded non-display regions and increased manufacturing costs, making it challenging to achieve a narrow frame and high aperture ratio while minimizing V-band mura defects.
Innovation Solution
A pixel array design with a data signal transmission line configuration that keeps scan lines away from data signal transmission lines, reducing coupling effects and maintaining a high aperture ratio, achieved by positioning data signal transmission lines in marginal regions and ensuring a specific distance between them and scan lines, thereby minimizing mura defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of gate drivers and source drivers is increased to achieve higher resolution, then the resolution is improved, but the non-display region expands and manufacturing costs increase
Solution Approach 1:
The patent merges the function of data lines with scan lines by using the same conductive structure to serve dual purposes. The data signal transmission line is integrated with the scan line structure, allowing one line to transmit both scan signals and data signals at different time periods, thereby reducing the total number of drivers needed and shrinking the non-display region.
Solution Approach 2:
The patent employs time-division multiplexing where the data line dynamically switches between transmitting data signals during the first time period and serving as a scan line during the second time period. This dynamic reuse of conductive structures reduces the number of permanent data lines required,从而缩小非显示区域.
2Measurement precision
If the number of gate drivers and source drivers is increased to achieve higher resolution, then the resolution is improved, but manufacturing costs increase
Solution Approach 1:
The patent merges the function of data lines with scan lines by using the same conductive structure to serve dual purposes. The data signal transmission line is integrated with the scan line structure, allowing one line to transmit both scan signals and data signals at different time periods, thereby reducing the total number of drivers needed and shrinking the non-display region.
Solution Approach 2:
The conductive structure serves multiple functions: it acts as a data line during the first time period and as a scan line during the second time period. This multi-functionality reduces the total number of conductive structures and drivers required, simplifying the manufacturing process and reducing costs.
3Area of moving object
If data lines are positioned closer to scan lines to reduce aperture ratio loss, then the aperture ratio is improved, but coupling effects increase causing V-band mura defects
Solution Approach 1:
The patent employs time-division multiplexing where the data line dynamically switches between transmitting data signals during the first time period and serving as a scan line during the second time period. This dynamic reuse of conductive structures reduces the number of permanent data lines required,从而缩小非显示区域.
Solution Approach 2:
The patent extracts the data signal transmission function from a permanently dedicated data line and transfers it to the scan line structure through time-division multiplexing. This separation of functions in time rather than space allows the conductive structures to be positioned optimally without harmful coupling effects.
Data Source
AI summary
A pixel array is located on a substrate and includes a plurality of pixel sets. Each of the pixel sets includes a first scan line, a second scan line, a data line, a data signal transmission line, a first pixel unit, and a second pixel unit. The data line is not parallel to the first and the second scan lines. The data signal transmission line is disposed parallel to the first and the second scan lines and electrically connected to the data line. Distance between the first and the second scan lines is smaller than distance between the data signal transmission line and one of the first and the second scan lines. The first pixel unit is electrically connected to the first scan line and the data line. The second pixel unit is electrically connected to the second scan line and the data line.