Touch Control Lead Line Overlap for Narrow Border
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display panels face challenges in achieving a narrow border due to the fan-out method of touch control lead lines, which limits the number of lead lines in the display area and requires some to pass through the lower border, affecting touch control performance and display quality.
Innovation Solution
A display panel design featuring a touch control layer and a lead line layer with touch control lead lines that include first and second line sections extending along different directions, allowing the lead lines to overlap and converge in the display area, thereby reducing the width of the lower border and improving touch control performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch control lead lines are fanned-out using conventional methods, then the layout is simple, but the lower border width increases and touch control performance deteriorates
Solution Approach 1:
The patent applies dimensionality change by transitioning from a planar fan-out layout to a three-dimensional overlapping structure. Lead lines are arranged in multiple layers where upper-layer lead lines overlap with lower-layer lead lines, effectively utilizing vertical space to reduce horizontal border width while maintaining adequate spacing for touch control performance.
Solution Approach 2:
The patent implements nesting by placing lead lines from different layers within overlapping regions. Specifically, lead lines in upper layers are positioned to overlap with lead lines in lower layers, creating a nested configuration that consolidates the fan-out space and reduces the required border width.
2Quantity of substance
If touch control electrodes in the lowest column are reduced in size, then space is provided for lead line fan-out, but the number of touch control lead lines in the display area is limited
Solution Approach 1:
By utilizing multiple layers with overlapping lead lines, the patent increases the effective capacity for lead lines within the display area without requiring additional horizontal or vertical space, thus accommodating more lead lines while maintaining display area integrity.
Solution Approach 2:
The patent merges the spatial utilization of multiple lead lines by allowing them to occupy overlapping regions across different layers. This combining approach enables a higher density of lead lines to be packed into the available display area without increasing the physical footprint.
3Reliability
If some touch control lead lines pass through the lower border, then connection is achieved, but touch control performance and display quality are affected
Solution Approach 1:
The patent resolves the conflict by routing lead lines through overlapping configurations in the vertical dimension rather than requiring them to extend through the lower border. This three-dimensional arrangement maintains reliable electrical connections while keeping lead lines contained within the display area, thereby preserving touch control performance and display quality.
Data Source
AI summary
A display panel and a mobile terminal are disclosed. The display panel includes a plurality of touch control electrodes spaced apart from each other and a plurality of touch control lead lines spaced apart from each other. The touch control electrodes include a plurality of touch control electrode columns. At least part of the touch control lead lines include a first line section and a second line section which extend along different directions. The first line section of the touch control lead lines overlaps the corresponding touch control electrodes, and the second line section at least overlaps the touch control electrodes, which are closest to the non-display area, of the corresponding touch control electrode columns.