Display Panel Bypass Line Layout Around a Hole Opening
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Solution Overview
Problem
Display devices face challenges with insufficient space for fan-out lines due to minimized non-display areas, leading to visible distances between sub-pixels and holes, and issues with parasitic capacitance affecting touch signals.
Innovation Solution
The display device employs bypass lines that connect data lines on either side of a hole, utilizing sub-bypass lines and power supply lines with varying widths and spacing to minimize the visible distance and prevent overlap with power supply lines, along with dummy patterns to optimize layout and reduce parasitic capacitance.
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 increases, but the space for fan-out lines becomes insufficient
Solution Approach 1:
The bypass lines are divided into multiple segments (first bypass line segment, second bypass line segment, third bypass line segment) that connect different data lines. This segmentation allows the bypass lines to efficiently route around the hole while minimizing the space required in the non-display area, resolving the contradiction between maximizing display area and providing sufficient space for fan-out lines.
2Object-affected harmful factors
If data lines bypass the hole with a larger distance, then the hole's impact is reduced, but the distance between sub-pixels and the hole becomes visible to users
Solution Approach 1:
The bypass lines are configured with different local characteristics - the first bypass line segment connects first data lines, the second bypass line segment connects second data lines, and the third bypass line segment connects third data lines. This localized routing approach allows each segment to optimally address the visual impact in its specific region while maintaining minimal overall distance, preventing the hole's impact from being visually noticeable without creating excessive distance.
3Object-affected harmful factors
If bypass lines are configured to connect data lines on both sides of the hole, then the hole's visual impact is minimized, but the device complexity increases
Solution Approach 1:
Multiple bypass line segments (first, second, and third bypass line segments) are merged into an integrated routing structure that collectively addresses the hole's visual impact. This merging approach consolidates the bypass functionality into a unified configuration that minimizes visual impact while avoiding the complexity of entirely separate bypass mechanisms for each data line.
Data Source
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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.