Multi-function Touch Panel for Simultaneous 3D Signal Detection

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Solution Overview

Problem

Current touch panel technologies require separate components for pressure and plane position detection, leading to inefficiencies in space usage and process complexity for 3D-signal input.

Innovation Solution

A touch 3D-signal input equipment with signal sensing units arranged on a substrate, connected via input and output wires to a signal processing unit, enabling simultaneous detection of touch strength and position using resistance or capacitance variations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If separate pressure sensor and touch sensor are used to detect pressure and plane position, then detection accuracy is improved, but device complexity and space usage increase

Engineering Contradiction:
Improvedetection accuracyVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines the pressure sensing function and touch position sensing function into a single integrated touch panel. The touch panel simultaneously detects both pressure magnitude and plane position coordinates through one unified sensing mechanism, eliminating the need for separate pressure sensors and touch sensors. This merging reduces device complexity and space requirements while maintaining detection accuracy.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The touch panel is designed with multi-functionality to perform both pressure detection and position detection simultaneously. The same touch panel structure serves multiple purposes: it detects the plane position where a user touches the screen and also measures the pressure magnitude applied, making it a universal sensing device that replaces multiple specialized components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Measurement precision

If separate pressure sensor and touch sensor are used to detect pressure and plane position, then detection accuracy is improved, but material usage and production cost increase

Engineering Contradiction:
Improvedetection accuracyVSAvoidmaterial usage
Core Design Contradiction:
Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent merges the sensing functions into a single touch panel structure, reducing the total number of components and materials required. Instead of using separate pressure sensors and touch sensors that would require multiple layers of films, electrodes, and supporting structures, the integrated design uses a unified sensing layer that achieves both detection functions simultaneously, thereby reducing material consumption.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If resistive film or piezoelectric film is used as pressure sensor, then pressure detection capability is improved, but process complexity and manufacturing difficulty increase

Engineering Contradiction:
Improvepressure detection capabilityVSAvoidprocess simplification
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent integrates the pressure sensing function directly into the touch panel structure, eliminating the need for separate resistive film or piezoelectric film layers. The unified sensing mechanism uses a simplified structure that combines both position and pressure detection in a single manufacturing process, reducing the number of production steps and simplifying manufacturing while maintaining reliable pressure detection capability.

Inventive Principle:
Principle #5Merging (Combining)

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

This solution combines touch and pressure sensing into a single device, reducing material usage and enhancing user experience by extending product functionality while maintaining accurate 3D-signal detection.

Implementation Method 1

Signal scanning is performed sequentially or simultaneously to detect a resistance or a capacitance of the deformed signal sensing units, and compare the resistance or the capacitance to the reference

Methodology Applied
Scientific EffectResistance variation: Electrical Resistance

Implementation Method 2

Signal scanning is performed sequentially or simultaneously to detect a resistance or a capacitance of the deformed signal sensing units, and compare the resistance or the capacitance to the reference

Methodology Applied
Scientific EffectCapacitance variation: Capacitance

Data Source

PatentUS10466852B2Touch 3D-signal input equipment and multi-function touch panel
Publication Date: 2019.11.05 TPK TOUCH SOLUTIONS (XIAMEN) INC
  • US10466852B2 patent drawing
  • US10466852B2 patent drawing
  • US10466852B2 patent drawing

AI summary

A touch 3D-signal input equipment and a multi-function touch panel are introduced. The touch 3D-signal input equipment includes a substrate, a plurality of signal sensing units, a plurality of input wires, and a plurality of output wires. The signal sensing units are arranged in array on the substrate to detect a plane position and a pressure magnitude of a touch signal simultaneously. The input wires and the output wires are electrically connected to any one of the signal sensing units and a signal processing unit, respectively. The touch 3D-signal input equipment can detect touch position and magnitude of the touch strength at the same time, achieving three dimensional (3D) signal input recognition.