Touch Panel Invalidating Section for Unintended Contact Prevention

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Solution Overview

Problem

Existing touch panel systems face issues with incorrect operations due to unintended contacts, such as a user's hand touching the screen, leading to reduced convenience and sensitivity in detecting actual touches.

Innovation Solution

A touch panel system with a touch invalidating section that, when a specific point is continuously touched for a predetermined period, invalidates the corresponding instruction to the electronic apparatus, preventing incorrect operations without altering the touch detection standards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a reference value is updated to a detection value that exceeds the reference value, then incorrect operations from unintended contacts are prevented, but sensitivity of touch detection declines

Engineering Contradiction:

Improveprevention of incorrect operationsVSAvoidsensitivity of touch detection

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent segments the touch panel into multiple detection regions and introduces a touch invalidation mechanism that operates independently from the reference value update mechanism. This allows the system to prevent incorrect operations through regional invalidation while maintaining accurate touch detection through preserved reference values in other regions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements preliminary action by invalidating touch instructions before they can be executed as incorrect operations. The touch invalidation section preemptively prevents unintended contacts from triggering actions, while the reference value update mechanism continues to operate normally for accurate touch detection.

Inventive Principle:

Principle #10Preliminary action

2Area of stationary object

If the frame width is reduced to make the display screen fuller, then the display-to-body ratio improves, but incorrect operations from hand contact become more frequent

Engineering Contradiction:

Improvedisplay screen areaVSAvoidincorrect operations from hand contact

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies local quality by implementing touch invalidation in specific regions of the touch panel where hand contact is most likely to occur. Different regions of the touch panel have different touch validation characteristics, allowing the system to maintain full display area while preventing incorrect operations in high-risk zones.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9152286B2Touch panel system and electronic apparatus

Publication Date: 2015.10.06 WACOM CO LTD

AI summary

A touch panel system (11) prevents an incorrect operation caused by an unintended contact of an object with a touch panel while suppressing a decline in sensitivity of detection of presence or absence of a touch on the touch panel. The touch panel system (11) includes a touch invalidating section (9) which, in a case where a specific point of a touch panel (1) is continuously touched for a predetermined period of time, invalidates an instruction that is given, in accordance with the touch, to an electronic apparatus including the touch panel (1).