Touch Sensor Hole Area Optical Component Integration
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Solution Overview
Problem
Current touch display technologies face challenges in integrating touch sensors with narrow bezel designs due to the spatial requirements of optical components and peripheral wires, leading to interference and restricted bending designs.
Innovation Solution
A touch sensor with a substrate featuring a hole area corresponding to the visible area, allowing optical components to be positioned within the hole area, thereby reducing the peripheral area's size and enabling diversified bending designs while maintaining effective touch functionality through strategically arranged electrode lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical components are disposed in the peripheral area, then the touch sensing function can be maintained, but the peripheral area size is increased and narrow bezel requirement cannot be met
Solution Approach 1:
The patent moves optical components from the traditional peripheral area (2D plane arrangement) into the hole area located in the middle of the visible area. This spatial reconfiguration allows optical components to be positioned without increasing the peripheral area dimensions, enabling narrow bezel design while maintaining touch sensing functionality through the transparent electrode material that allows light transmission.
Solution Approach 2:
The patent embeds optical components within the hole area that is positioned in the middle of the visible area, effectively nesting the optical components within the display structure. This nesting approach allows the optical components to occupy space that would otherwise be part of the visible area, thereby reducing the required peripheral area while maintaining both display and optical functions.
2Adaptability or versatility
If optical components are arranged in the peripheral area, then optical functions can be provided, but circuit layout is affected and mechanism interference occurs
Solution Approach 1:
The patent extracts optical components from the peripheral area and relocates them to the hole area in the middle of the visible area. This extraction eliminates the interference between optical components and peripheral circuit layouts, as the hole area is positioned away from the peripheral wiring regions. The transparent electrode material in the hole area does not interfere with optical component placement or circuit routing.
3Area of stationary object
If peripheral area is reduced for narrow bezel design, then aesthetic appearance is improved, but optical components cannot be properly positioned
Solution Approach 1:
The patent utilizes the hole area dimension (a transparent region within the visible area) to position optical components, rather than relying on the peripheral area. This allows the peripheral area to be minimized for narrow bezel design while optical components are accommodated in the hole area where the transparent electrode material permits optical transmission and component placement.
Data Source
AI summary
A touch sensor having a visible area and a peripheral area on at least one side of the visible area includes a substrate and a first touch electrode layer. The substrate has a hole area corresponding to the visible area, and the hole area has a first edge. The first touch electrode layer is disposed on the substrate and corresponding to the visible area. The first touch electrode layer includes a first electrode line extending along a first direction, and the first electrode line has a first portion close to the hole area and a second portion far from the hole area along the first direction. The first portion of the first electrode line is connected to the second portion of the first electrode line, and the first portion of the first electrode line is disposed adjacent to the first edge along a contour of the hole area.