Array Substrate Wiring for Touch Display Aperture and Resistance
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Solution Overview
Problem
The existing active matrix liquid crystal display devices face issues with display quality due to differences in aperture ratio caused by the presence or absence of auxiliary scanning signal lines, and the increased wiring resistance and risk of disconnection in touch panels with larger screen sizes.
Innovation Solution
The array substrate design includes position detection electrodes and wiring lines, scanning wiring lines, and auxiliary position detection wiring lines, with specific configurations such as overlapping and parallel arrangements to reduce resistance and improve display quality, and the use of auxiliary touch wiring lines to maintain redundancy and aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an auxiliary scanning signal line is provided in every pixel region, then the wiring resistance of touch panel lines is reduced, but the aperture ratio uniformity across pixel regions deteriorates due to the presence of additional wiring
Solution Approach 1:
The patent applies local quality by selectively providing auxiliary scanning signal lines only in specific pixel regions where the aperture ratio would otherwise be insufficient. Instead of uniformly adding auxiliary lines to all pixel regions, the invention identifies and targets only those regions that require additional light-blocking structures to maintain proper aperture ratio balance, thus reducing wiring resistance where needed without compromising overall aperture uniformity.
Solution Approach 2:
The patent inverts the conventional approach by not adding auxiliary scanning signal lines to all pixel regions, but rather omitting them from regions where they would cause aperture ratio issues. This inverse strategy allows the wiring resistance to be managed effectively in critical areas while maintaining aperture uniformity across the display panel.
2Area of stationary object
If the screen size is increased to provide larger display area, then the display area is expanded, but the wiring resistance of touch panel lines increases and disconnection risk rises
Solution Approach 1:
The patent addresses the wiring resistance issue in large-screen displays by introducing auxiliary scanning signal lines that extend in the vertical direction (another dimension) to intersect with and provide alternative conduction paths for horizontal touch panel wiring lines. This dimensional approach creates multiple conduction routes, effectively reducing the total resistance of long wiring paths in large displays without compromising the expanded display area.
3Reliability
If auxiliary scanning signal lines are added to reduce wiring resistance, then the conduction reliability is improved, but the device complexity increases due to additional wiring structures
Solution Approach 1:
The patent applies partial action by implementing auxiliary scanning signal lines only in the specific vertical regions where they are most needed to reduce wiring resistance, rather than adding them throughout the entire display. This selective approach improves conduction reliability in critical areas while minimizing the overall increase in device complexity by limiting the auxiliary wiring to only where necessary.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the resistance of position detection wiring lines, improves display quality by minimizing differences in aperture ratio, and ensures reliable position detection with reduced risk of disconnection.
Implementation Method 1
a plurality of position detection electrodes configured to generate electrostatic capacitance with a position input member used for inputting a position and detect an input position by the position input member
Data Source
AI summary
An array substrate includes: a signal supply unit configured to supply a signal; a plurality of position detection electrodes; a plurality of position detection wiring line; a plurality of scanning wiring lines; a plurality of pixel regions; a scanning connection wiring line having one end side connected to the signal supply unit and another end side connected to the scanning wiring lines, the scanning connection wiring line being arranged passing through some of the pixel regions included in the plurality of pixel regions; and an auxiliary position detection wiring line having at least one end side and another end side each connected to the position detection wiring lines, the auxiliary position detection wiring line being disposed in the pixel regions, of the plurality of pixel regions, not provided with the scanning wiring lines.