Slim Border Display Panel via Parallel Data Signal Routing
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Solution Overview
Problem
Conventional display panels have a wide border width due to the need for extensive wire routing of data lines, which limits their portability and increases production costs, especially in applications like portable phones and digital cameras.
Innovation Solution
The active device array substrate features a unique circuit design with data signal transmission lines that are parallel to scan lines, reducing the number of data lines and allowing for a slim border by sharing data signals among sub-pixel units, thereby decreasing the border width and increasing space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If extensive wire routing of data lines is used to connect all data lines to the driving chip, then reliable electrical connection is achieved, but the border width becomes large
Solution Approach 1:
The patent segments the data line routing by introducing data signal transmission lines that run parallel to scan lines, separating the routing paths of data lines and scan lines. This segmentation allows data lines to connect to the driving chip through a reduced number of border regions while maintaining electrical connection reliability.
Solution Approach 2:
The patent utilizes the non-display region in a different dimensional arrangement by routing data signal transmission lines parallel to scan lines rather than perpendicular to data lines. This dimensional change in routing strategy reduces the border width required for wire routing while maintaining electrical connectivity.
2Length of moving object
If the border width is reduced to improve portability, then the display panel becomes more compact, but the wire routing space for data lines becomes insufficient
Solution Approach 1:
The patent divides the wire routing function into two separate routing paths: data lines routing through one border region and scan lines routing through another border region. This segmentation enables each border to be optimized independently, allowing reduced overall border width while maintaining adequate routing space for each signal type.
Solution Approach 2:
The patent changes the routing dimension by introducing data signal transmission lines that extend in the same direction as scan lines (parallel routing), rather than having data lines cross perpendicularly through the border. This dimensional change optimizes space utilization and enables compact border design.
3Reliability
If data lines are routed through the border to connect to the driving chip, then electrical connection is established, but the number of source driving chips increases
Solution Approach 1:
The patent merges the routing functions by having data signal transmission lines share the same routing direction and border region as scan lines. This merging strategy reduces the number of separate border regions required for routing, thereby reducing the number of source driving chips needed at the borders while maintaining electrical connection reliability.
Data Source
AI summary
A display panel including an active device array substrate, an opposite substrate and a display medium is provided. The active device array substrate includes a substrate, scan lines, data lines, pixel units, and data signal transmission lines. The scan lines and data lines define a plurality of pixel regions on the substrate. Each pixel unit is disposed within one of the pixel regions respectively, and each pixel unit includes a plurality of sub-pixel units. The sub-pixel units within the same pixel unit are electrically connected with the same data line, and each sub-pixel unit within the same pixel unit is electrically connected with one of the scan lines respectively. Each data signal transmission line is electrically connected with one of the data lines, and an extending direction of the data signal transmission line is substantially parallel with an extending direction of the scan lines.