Integrated Display Panel Touch Electrode Layout
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Solution Overview
Problem
Conventional capacitive touch screens with integrated display panels face challenges of increased thickness due to multiple glass layers and complex processing, leading to low yield and reduced flexibility in space distribution.
Innovation Solution
A display panel design that reduces the number of wires and enhances space distribution flexibility by arranging light-emitting units and electrodes in a mirroring manner, allowing for a more efficient layout of subpixel areas and increased area utilization, thereby improving touch panel resolution and reducing electrode line quantity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple glass layers are used for capacitive touch panel integration, then touch sensing function is achieved, but thickness increases significantly
Solution Approach 1:
The patent combines the display panel and capacitive touch panel into a single integrated structure. The touch sensing electrodes are formed on the same substrate as the display elements, eliminating the need for separate glass layers. This merging of functions achieves touch sensing capability while significantly reducing the overall thickness compared to conventional stacked architectures.
Solution Approach 2:
The patent transitions from a three-dimensional stacked structure (multiple glass layers) to a planar two-dimensional integration approach. By arranging touch electrodes and display elements on the same plane, the design eliminates vertical stacking requirements, thereby reducing thickness while maintaining both display and touch functions.
2Adaptability or versatility
If conventional capacitive touch screen process is used, then touch control functionality is achieved, but manufacturing complexity increases and yield decreases
Solution Approach 1:
The patent merges the manufacturing processes for display panels and touch panels into a single unified process flow. By forming both display elements and touch electrodes on the same substrate using compatible fabrication techniques, the design eliminates the need for separate processing steps, thereby reducing manufacturing complexity and improving production yield.
Solution Approach 2:
The patent employs universal materials and processing techniques that serve dual purposes for both display and touch functions. The same substrate, electrode materials, and fabrication methods are used for both display elements and touch sensing electrodes, creating a multi-functional system that simplifies manufacturing and reduces process complexity.
3Reliability
If traditional electrode layout is used, then electrical connections are established, but area utilization decreases and resolution is limited
Solution Approach 1:
The patent transitions electrode connections from a planar two-dimensional layout to a three-dimensional stacked configuration. By routing electrode lines through vertical vias and utilizing multiple layers in the vertical dimension, the design achieves reliable electrical connections while minimizing the horizontal area occupied by interconnect structures, thereby improving area utilization and enabling higher resolution.
Solution Approach 2:
The patent segments the electrode connection paths into multiple discrete layers and routing levels. By dividing the electrical interconnect system into separate functional layers (signal lines, power lines, touch electrodes) that can be independently optimized and routed, the design achieves reliable connections while efficiently utilizing available area through systematic segmentation of the interconnect architecture.
Data Source
AI summary
The present disclosure provides a display panel, which includes a first light-emitting unit, a first electrode line A, a second light-emitting unit, a second electrode line A, and a first electrode line B. The first light-emitting unit includes a first electrode A and a first electrode B located at both ends of the first light-emitting unit respectively. The first electrode line A is connected to the first electrode A. The second light-emitting unit is located on a first side of the first light-emitting unit and includes a second electrode A and a second electrode B located at both ends of the second light-emitting unit respectively. The second electrode line A is connected to the second electrode A, and the second electrode line A and the first electrode line A are independent in terms of signal. The first electrode line B is arranged between the first light-emitting unit and the second light-emitting unit and connected to the first electrode B and the second electrode B respectively.