Touch Unit Bridge Layout for Display Panel Visibility
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Solution Overview
Problem
As display panel dimensions and resolution increase, the number of bridges required for touch functionality also increases, leading to visibility issues and potential blocking of pixels, affecting the display effect.
Innovation Solution
The design includes a touch unit with first and second detection electrode groups arranged in intersecting directions, featuring branching portions that extend to increase the adjacent area between sub-blocks, allowing for larger bridge spacing and reduced visibility, with multiple bridges connecting sub-blocks to enhance antistatic ability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of bridges is increased to maintain touch functionality in larger display panels, then the touch coverage is improved, but the visibility of bridges increases and pixel blocking worsens
Solution Approach 1:
The patent introduces a multi-dimensional bridge layout where bridges are arranged not only in the traditional grid pattern but also extend in multiple directions (first direction and second direction intersecting at an angle). This dimensional expansion allows bridges to connect detection electrode sub-blocks more efficiently without increasing their density in any single direction, thereby reducing visibility while maintaining touch coverage.
Solution Approach 2:
The patent employs asymmetric bridge arrangements where bridges in different regions of the display panel have different orientations and spacing. By intersecting bridges at specific angles (not necessarily 90 degrees) and varying their distribution across different areas, the design reduces the uniformity of bridge patterns that cause visibility issues, while still ensuring adequate touch sensitivity across the entire panel.
2Measurement precision
If display resolution is increased, then the display quality is improved, but the space available for bridges becomes smaller
Solution Approach 1:
The patent divides the bridge structure into multiple segments or sections that can be independently optimized. By segmenting the bridge paths and allowing them to follow different routes through the pixel regions, the design minimizes the space each bridge occupies while maintaining electrical connectivity. This segmentation enables bridges to navigate around high-resolution pixel areas more efficiently.
Solution Approach 2:
The patent utilizes multi-directional bridge arrangements that extend beyond the conventional single-plane layout. By introducing bridges that intersect at angles and extend in multiple dimensions across the pixel matrix, the design maximizes the use of available space without compromising display resolution, as bridges can route through previously underutilized spatial regions.
3Object-affected harmful factors
If the distance between bridges is increased to reduce visibility, then bridge visibility is reduced, but the number of bridges that can be accommodated decreases
Solution Approach 1:
The patent combines multiple bridge functions into shared pathways where single bridge structures serve multiple connection purposes. By merging bridge routes so that one bridge can electrically connect multiple detection electrode sub-blocks simultaneously, the design reduces the total number of bridges required while maintaining adequate touch coverage and increasing spacing between remaining bridges to reduce visibility.
Solution Approach 2:
The patent designs bridges with multi-functional capabilities where a single bridge structure performs multiple electrical connection tasks. Bridges are configured to intersect and connect various detection electrode groups in different directions, allowing each bridge to serve multiple touch sensing functions rather than requiring dedicated bridges for each connection, thereby reducing overall bridge quantity while improving spacing.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a touch unit. The touch unit includes first detection electrode groups arranged along a first direction, second detection electrode groups arranged along a second direction, and bridges including a first bridge. The first direction intersects the second direction. Each of the plurality of first detection electrode groups includes a first detection electrode sub-block and a second detection electrode sub-block that are adjacent to each other along the first direction. The first detection electrode sub-block includes a first main portion, and the second detection electrode sub-block includes a second main portion and a first branching portion. The first branching portion extends toward the first main portion, and the first bridge is configured to electrically connect the first branching portion and the first main portion.