Touch-Sensing Display Substrate Aperture Signal Routing
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Solution Overview
Problem
High-resolution display apparatuses face challenges with insufficient charging time for data lines, and existing touch-sensing display technologies are not compatible with active pens, leading to issues with display quality and functionality.
Innovation Solution
A touch-sensing display substrate is designed with a configuration of first and second touch-sensing electrodes and signal lines that cross over apertures in specific patterns, allowing for simultaneous touch control and display functions, and using these electrodes as a common electrode to reduce electrical resistance and thickness, while being compatible with active pens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-resolution display is implemented, then display quality is improved, but charging time for data lines becomes insufficient
Solution Approach 1:
The patent combines the touch sensing electrode with the common electrode function, creating a multi-functional electrode structure. This merging reduces the number of separate components and their associated electrical paths, thereby reducing overall electrical resistance and enabling sufficient charging time for data lines even in high-resolution displays.
Solution Approach 2:
The first touch-sensing electrode serves multiple functions: it acts as both a touch sensing element and a common electrode for liquid crystal control. This multi-functionality eliminates the need for separate common electrode structures, reducing electrical resistance and improving charging efficiency without compromising display resolution.
2Measurement precision
If separate common electrode and touch electrode structures are used, then touch sensitivity is improved, but electrical resistance increases and thickness increases
Solution Approach 1:
The patent merges the common electrode and touch sensing electrode into a single integrated structure. The first touch-sensing electrode simultaneously performs common electrode functions (controlling liquid crystal orientation) and touch sensing functions, thereby reducing electrical resistance while maintaining touch sensitivity through its conductive aperture design.
3Ease of manufacture
If multiple signal lines cross over multiple apertures, then manufacturing complexity is reduced, but signal coupling interference increases
Solution Approach 1:
The patent applies different aperture configurations to different regions and signal lines. Each signal line is designed to cross over a specific pattern of apertures (first apertures for odd-numbered signal lines, second apertures for even-numbered signal lines), creating localized variations that reduce signal coupling interference while maintaining overall manufacturing simplicity.
Data Source
AI summary
A touch-sensing display substrate is provided. A plurality of first touch-sensing electrodes arranged along a first direction; a plurality of first apertures respectively extending through a thickness of a respective one of the plurality of first touch-sensing electrodes; a plurality of second apertures respectively extending through of a thickness of the respective one of the plurality of first touch-sensing electrodes. A first signal line of the plurality of signal lines extends along the second direction and crosses over the plurality of first apertures in one of the plurality of first touch-sensing electrodes. A second signal line of the plurality of signal lines extends along the second direction and crosses over the plurality of second apertures in a same as or different from the one of the plurality of first touch-sensing electrodes crossed-over by the first signal line.