Flexible Touch Panel Bending Interference Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Flexible touch panels experience unwanted touch interference due to changes in circuit characteristics when bent, requiring a technology to address these issues effectively.

Innovation Solution

A touch control device comprising a flexible touch panel, a sensor to detect bending, and a controller that dynamically adjusts its load drive capability setting to match the current bending type, reducing power consumption and minimizing interference by selectively deactivating sensing lines in non-operational regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the flexible touch panel is bent, then flexibility and adaptability are improved, but circuit characteristics change and touch interference is introduced

Engineering Contradiction:

ImproveflexibilityVSAvoidtouch interference

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by making the scanning signal characteristics adjustable based on the bending state. The controller dynamically changes scanning signal parameters (such as voltage level, frequency, or waveform) according to the detected curvature, allowing the touch panel to adapt its operating conditions to match the current bending state, thereby maintaining accurate touch detection despite circuit characteristic changes

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by modifying scanning signal characteristics in response to bending. When the touch panel is bent, the controller detects the bending state and adjusts scanning signal parameters (voltage, frequency, duty cycle) to compensate for circuit characteristic changes, effectively reducing touch interference while maintaining flexibility

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If the load drive capability setting is adjusted according to bending, then power consumption is reduced, but device complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidcontrol complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by adjusting the load drive capability setting based on bending state. The controller modifies driving parameters (such as current level, voltage amplitude, or switching frequency) according to the detected curvature, reducing power consumption during bent states when full drive capability is not needed, while maintaining simple control logic

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements feedback by using the bending detection result to control the load drive capability setting. The controller continuously monitors the bending state through curvature detection and adjusts the driving parameters in real-time, creating a closed-loop system that automatically optimizes power consumption based on actual usage conditions

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS9830030B2Flexible touch panel, touch control device and operating method using the same

Publication Date: 2017.11.28 HANNSTAR DISPLAY CORP

AI summary

A touch control device comprises a flexible touch panel, a sensor and a controller. The flexible touch panel receives a touch input. The sensor detects a bending of the flexible touch panel. The controller drives the flexible touch panel with a load drive capability setting and adjusts the load drive capability setting according to the bending of the flexible touch panel.