Touch Window Sensor Member Integration for Contact Force Detection
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Solution Overview
Problem
Conventional touch screen panels, particularly contact resistive touch screen panels, cannot accurately capture continuous data proportional to contact force and can only detect touch position, making them inefficient for complex user interface operations.
Innovation Solution
A touch window with a cover window having an active area, unactive area, and function area, featuring a sensing electrode and a sensor member on the active area, where the sensor member is integrated into the command icon pattern, and a conductive polymer-based light source is used on the function area, eliminating the need for separate modules and simplifying the operation scheme.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a contact resistive touch screen panel is used, then the structure is simple, but it cannot acquire continuous data proportional to contact force and can only detect touch position
Solution Approach 1:
The patent combines the sensing electrode and sensor member into an integrated touch window structure. The sensing electrode is formed on the active area while the sensor member is integrated into the command icon pattern part, allowing both touch position detection and contact force measurement to be achieved through a unified structure rather than separate components.
Solution Approach 2:
The touch window structure serves multiple functions simultaneously: it detects touch position through the sensing electrode, measures contact force through the sensor member, and provides command icon display through the integrated pattern. This multi-functional design eliminates the need for separate modules for each function.
2Reliability
If a separate light source module is provided, then the lighting function is reliable, but the device complexity and manufacturing process are increased
Solution Approach 1:
The light source is integrated directly into the function key region of the touch window rather than being provided as a separate module. The conductive polymer is formed on the function key region and then cured to create the light source, merging the lighting function with the structural layer of the touch window.
Solution Approach 2:
The patent uses a conductive polymer that can be cured at normal temperature or less to form the light source. By changing the curing temperature parameter to normal or sub-normal conditions, the manufacturing process is simplified and the integration of the light source into the touch window structure becomes more reliable.
3Adaptability or versatility
If a complex driving scheme with separate driving chip and connection circuit is used, then the touch input function is comprehensive, but the manufacturing process efficiency is reduced
Solution Approach 1:
The sensing electrode and sensor member are integrated into a single touch window structure, eliminating the need for separate driving chips and connection circuits. The command icon pattern part is directly formed on the function area, reducing the number of manufacturing steps and improving production efficiency.
Solution Approach 2:
The touch window is divided into functional areas (active area, unactive area, function area) with each area containing specific components. This segmentation allows for simplified manufacturing of each region while maintaining overall system versatility.
Data Source
AI summary
Disclosed is a touch window with a sensor member. The touch window includes: a cover window including an active area, an unactive area, and a function area; and a sensing electrode on the active area, wherein the function area includes a first printing layer on the cover window and a sensor member on the first printing layer.