Integrated Touch Screen Panel Design for Portability
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Solution Overview
Problem
Touch screen panels attached to image display devices increase the size of the device, reducing portability and requiring additional manufacturing processes and materials, which increases costs and complexity.
Innovation Solution
A thinner touch screen panel design featuring a transparent substrate with sensing patterns on different layers, integrated with the display panel, and including insulating and adhesive layers, along with a buffer film and icon sheet, to simplify manufacturing and enhance durability and sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch screen panel is attached to the panel of the image display device, then the touch screen panel can function as an input device, but the size of the image display device increases, reducing ease of portability
Solution Approach 1:
The touch screen panel is integrated with the display panel by forming the transparent substrate and sensing patterns directly on the display panel structure, merging two separate components into a unified assembly, thereby reducing overall device size while maintaining input functionality
Solution Approach 2:
The sensing patterns are arranged in multiple layers at different depths within the integrated structure, utilizing the third dimension (depth) to accommodate touch sensing functionality without increasing the front-facing area, thus maintaining portability while adding input capabilities
2Adaptability or versatility
If a touch screen panel is attached to the panel of the image display device, then touch input functionality is provided, but additional manufacturing processes and materials are required, increasing costs and complexity
Solution Approach 1:
The manufacturing process integrates the formation of the transparent substrate, insulating layers, and sensing patterns into a unified sequence of steps that can be performed on the display panel assembly, reducing the number of separate manufacturing processes and material handling operations required
Solution Approach 2:
The transparent substrate serves multiple functions simultaneously: it acts as the structural base for the touch sensor, provides the contact surface for user input, and maintains the integrated assembly structure, thereby reducing the need for additional separate components and simplifying manufacturing
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 results in a thinner, more portable touch screen panel with improved durability and sensitivity, reduced manufacturing complexity, and lower costs, while maintaining the functionality of detecting contact positions effectively.
Implementation Method 1
the first sensing patterns and second sensing patterns are adapted to change in electrostatic capacitance in accordance with a contact position of a contact object on a second surface of the transparent substrate
Data Source
AI summary
A touch screen panel includes a transparent substrate, sensing patterns on a first surface of the transparent substrate, and an insulating layer on the sensing patterns. A second surface of the transparent substrate opposite the first surface is adapted to be contacted by a contact object.