Integrated Touch Display Wiring for Narrower Frames
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices with integrated touch panels require flexible printed circuits for both the display and touch panel connections, leading to complex and costly manufacturing processes.
Innovation Solution
A sensor-equipped display device design that includes a first substrate with terminals and wiring connected to a second substrate via a connecting member, allowing for a simplified and reduced frame structure by extending wiring towards an adjacent area without protruding beyond the display panel edges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple flexible printed circuits are used to connect display and touch panel components, then electrical connections are established, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the display panel and touch panel into a single integrated structure where the touch sensor electrode is formed directly on the display panel substrate. This eliminates the need for separate flexible printed circuits to connect the two components, reducing device complexity while maintaining electrical connection reliability through direct integration.
Solution Approach 2:
The display panel substrate serves multiple functions: it acts as both the display component substrate and the touch sensor substrate. By making the substrate multi-functional, the patent eliminates the need for additional connection components, thereby reducing overall device complexity while ensuring reliable electrical connections for both display and touch functions.
2Length of moving object
If wiring is extended toward adjacent area, then frame width is reduced, but wiring layout complexity increases
Solution Approach 1:
The patent utilizes the surface area of the display panel substrate as an additional dimension for wiring routing. By extending wirings toward the adjacent area (non-display region) and using the substrate surface as a routing plane, the design achieves narrower frame width while managing wiring complexity through spatial optimization on the substrate surface.
Solution Approach 2:
The patent applies different wiring routing strategies to different regions of the substrate. In the display area, wiring is minimized to maintain display quality, while in the adjacent non-display area, wiring is extended and optimized to achieve narrow frame width without interfering with the display function. This localized optimization resolves the contradiction between frame width and wiring complexity.
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 design enables a narrower frame, reduced manufacturing costs, and simplified assembly by minimizing the need for multiple flexible substrates, while maintaining effective signal transmission between the display and sensor components.
Implementation Method 1
a connecting member which electrically connects the first terminal and the third terminal
Implementation Method 2
A capacitive touch panel, which is an example of the sensors, comprises an electrode for detecting a change in the electrostatic capacitance caused by the object to be detected
Data Source
AI summary
A display device is provided and includes a first substrate comprising first and second areas, first and second terminals located in the first area, and first wiring electrically connects the first terminal with the second terminal; a second substrate comprising a detection electrode for sensing and a third terminal electrically connected to the detection electrode; and connecting member comprising a base layer, and a conductive member electrically connects first and third terminals, wherein the first area is an area in which the second substrate does not overlap the first substrate, the second area is an area in which the first substrate and the second substrate overlap each other, the connecting member does not extend outside first substrate, the conductive member is provided on an undersurface of the base layer, and the undersurface is opposed to the first surface and the third surface.