Multi-Touch Panel Integrating Resistive and Capacitive Detection
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Solution Overview
Problem
Portable terminals currently only support either resistive or capacitive type touch input, limiting their functionality and user interaction capabilities.
Innovation Solution
A multi-touch panel that integrates capacitive type electrode films as resistive type upper and lower plate electrodes, enabling both capacitive and resistive type touch input detection in a single touch panel, along with a pattern determining unit and touch manager to analyze and coordinate touch inputs accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable terminal implements only one type of touch screen (either resistive or capacitive), then the device complexity is reduced and manufacturing is simpler, but the adaptability and versatility of touch input are limited
Solution Approach 1:
The touch panel is designed to perform multiple functions by integrating both resistive and capacitive touch detection capabilities into a single panel structure. The panel can detect both pressure-based resistive touches and capacitance-based capacitive touches, allowing one device to serve multiple touch input purposes without requiring separate touch screens for each type.
Solution Approach 2:
The touch panel employs composite material construction by combining resistive touch layer structures with capacitive touch electrode films. This composite approach allows the single panel to exhibit both resistive and capacitive characteristics, enabling dual-mode touch detection while maintaining a unified physical structure.
2Ease of operation
If a portable terminal implements only one type of touch screen, then the manufacturing precision requirements are simplified, but the ease of operation for different input styles is reduced
Solution Approach 1:
The same touch panel structure serves both resistive and capacitive operation modes, allowing users to choose their preferred input method (finger-based capacitive or stylus-based resistive) without needing separate devices. This multi-functionality enhances ease of operation by providing flexibility in input style while using a single unified panel.
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
Enables seamless support for both resistive and capacitive touch inputs, enhancing user interaction by allowing delicate touch inputs and icon-oriented interactions on a single touch panel, improving the overall performance of portable terminal touch screens.
Implementation Method 1
The capacitive type touch screen uses a capacitance of a human body to find a coordinate when a touch is made by using the capacitance that varies when a screen is touched.
Implementation Method 2
When the user presses an upper plate, the upper plate is brought into contact with the lower plate. A coordinate is read by using a resulting resistance value.
Data Source
AI summary
An apparatus and method for a touch input of a portable terminal are provided. More particularly, an apparatus and method for improving performance of a touch input device by using a multi-touch panel which supports both a resistive type and a capacitive type of touch input detection are provided. The apparatus includes a multi-touch panel for performing both a capacitive type and a resistive type of touch input detection in one touch panel, a pattern determining unit for analyzing a touch input pattern of a user by using the multi-touch panel, and a touch manager for determining a touch input coordinate corresponding to the touch input pattern of the user based on one of the capacitive type and the resistive type of touch input detection.