Touch Panel Conductive Layer Matrix for Sensing Accuracy
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Solution Overview
Problem
Current touch panels face challenges in achieving high sensing accuracy and detection sensitivity, which affects the precision of positional information and visibility, especially when integrating touch sensors with display devices.
Innovation Solution
A touch panel design incorporating multiple conductive layers arranged in a matrix with specific electrical connections and orientations, minimizing overlap with display elements to enhance capacitance and reduce light scattering, while maintaining high visibility and low power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pressure-sensitive sensor array or capacitive sensor array is provided to overlap with the display panel, then touch sensing function is achieved, but light scattering increases and visibility decreases
Solution Approach 1:
The conductive layers are divided into multiple segments (first to fourth conductive layers) arranged in a matrix pattern with alternating orientations. This segmentation reduces the continuous coverage of conductive material over display elements, thereby minimizing light scattering while maintaining touch sensing capability across the display surface.
Solution Approach 2:
The conductive layers are strategically positioned to overlap with non-display regions or specific portions of the display panel where touch sensing is needed but light emission occurs minimally. The first and third conductive layers overlap with first display elements, while second and fourth conductive layers overlap with second display elements, creating localized sensing zones that minimize overall light interference.
2Measurement precision
If conductive layers are arranged to enhance capacitance for higher detection sensitivity, then sensing accuracy improves, but device complexity increases
Solution Approach 1:
The first and fourth conductive layers are electrically connected through a first connection portion, and the second and third conductive layers are electrically connected through a second connection portion. This merging of conductive layers creates enhanced capacitance structures that improve detection sensitivity while consolidating the complexity into standardized connection patterns rather than entirely separate structures.
Solution Approach 2:
The conductive layers are arranged in multiple dimensions with different orientations - first and third layers extend in a first direction while second and fourth layers extend in a second direction intersecting the first direction. This multi-dimensional arrangement maximizes capacitance enhancement through spatial distribution while organizing complexity into a systematic geometric pattern.
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
The solution provides a touch panel with improved sensing accuracy, higher detection sensitivity, and enhanced visibility by optimizing the arrangement of conductive layers and display elements, resulting in a more precise and energy-efficient input/output device.
Implementation Method 1
a touch sensor with higher sensitivity is required... A touch panel including a first conductive layer, a second conductive layer, a third conductive layer, a fourth conductive layer... The first conductive layer and the fourth conductive layer are electrically connected to each other through a first connection portion. The second conductive layer and the third conductive layer are electrically connected to each other through a second connection portion.
Implementation Method 2
minimizing overlap with display elements to enhance capacitance and reduce light scattering, while maintaining high visibility
Data Source
AI summary
An input device or an input/output device with higher sensing accuracy is provided. An input device or an input/output device with higher detection sensitivity is provided. A display device or an input/output device with high visibility is provided. A plurality of conductive layers arranged in a matrix has an outline including a linear portion parallel to a direction along an outline of a display region of a display portion and linear portions of adjacent two conductive layers face each other. Furthermore, in the plurality of conductive layers arranged in a matrix, a plurality of conductive layers arranged in a line in an oblique direction to the outline of the display portion are electrically connected to each other. Alternatively, a plurality of conductive layers arranged in a zigzag line along the outline of the display portion are electrically connected to each other.