Display Panel Line Routing Around a Hole to Reduce Touch Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The minimization of the non-display area in display devices leads to insufficient space for fan-out lines, causing potential issues with parasitic capacitance and touch signal interference.
Innovation Solution
The display device incorporates bypass lines and power supply lines that extend in different directions, with spacing portions designed to avoid overlapping with horizontal power supply lines, minimizing the non-display area and preventing visual recognition of patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the non-display area is minimized to increase display area, then the display area is improved, but the space for fan-out lines becomes insufficient
Solution Approach 1:
The bypass lines extend in the first direction (horizontal) to connect data lines on opposite sides of the hole, while power supply lines extend in the second direction (vertical). This multi-directional routing approach utilizes both horizontal and vertical spaces, effectively distributing the routing paths across different dimensions to accommodate all connections within the minimized non-display area.
Solution Approach 2:
The bypass lines are divided into multiple segments: first sub-bypass lines connected to first data lines, second sub-bypass lines connected to second data lines, and third sub-bypass lines connecting these segments. This segmentation allows the routing paths to navigate around the hole in the display area while maintaining organized and manageable connection paths.
2Area of stationary object
If bypass lines and power supply lines are routed closely to minimize space, then the non-display area is reduced, but parasitic capacitance and touch signal interference increase
Solution Approach 1:
Spacing portions are introduced as intermediary gaps between the bypass lines and power supply lines. These spacing portions act as buffers that electrically isolate the bypass lines from the power supply lines, preventing parasitic capacitance formation and touch signal interference while maintaining compact overall layout.
Solution Approach 2:
The spacing portions are strategically placed only at specific locations where bypass lines and power supply lines would otherwise intersect or come too close. This localized spacing approach provides electrical isolation exactly where needed, minimizing parasitic effects without unnecessarily increasing the overall non-display area.
3Ease of manufacture
If lines are arranged in a regular pattern to simplify manufacturing, then manufacturing is easier, but visual patterns become recognizable and reduce display quality
Solution Approach 1:
The bypass lines and power supply lines are arranged in asymmetric, irregular patterns rather than regular grid patterns. The spacing portions are positioned at varying locations, and the lines follow non-uniform paths around the hole, creating a visually random appearance that prevents recognizable patterns while maintaining manufacturability through standardized routing rules.
Data Source
AI summary
Provided is a display device. The display device includes a display area including a hole and sub-pixels displaying an image, first data lines disposed on one side of the hole in the display area and extending in a second direction crossing a first direction, second data lines disposed on the other side of the hole in the display area and extending in the second direction, and bypass lines bypassing the hole in the display area and connecting the first data lines and the second data lines, respectively. Each the bypass lines includes a first sub-bypass line extending in the first direction and connected to any one of the first data lines, a second sub-bypass line extending in the second direction and connected to the first sub-bypass line, and a third sub-bypass line extending in the first direction and connecting the second sub-bypass line and any one of the second data.