Operation Support Device Depression Detection Sensitivity

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing operation support devices for electrostatic capacitance-type coordinate input devices lack sensitivity in detecting depression operations, which affects the accuracy of input operations.

Innovation Solution

The operation support device includes a main shaft support member, a support plate with embedded first magnets, a first rotating plate with second magnets, and conductive members that adjust the distance between detection points when the support plate and first rotating plate transition from contact to separation, enhancing the sensitivity of depression detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a cushion member is used to detect depression operations, then the device can detect pushing states, but the detection sensitivity is insufficient

Engineering Contradiction:

Improvedepression detection sensitivityVSAvoiddetection mechanism complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical cushion member detection system with an electromagnetic detection system using magnets and conductive members on the coordinate input device. This substitution enables more sensitive depression detection through electrical signal changes rather than mechanical contact, directly resolving the contradiction between detection sensitivity and device complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces magnets as intermediary elements between the operation support device and the coordinate input device. The magnets generate attractive forces that create measurable distance changes in conductive members during depression operations, serving as a sensitive intermediary mechanism that enhances detection capability without requiring complex mechanical structures.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If magnets are used to generate attractive force between support plate and rotating plate, then depression detection sensitivity improves, but the device structure becomes more complex

Engineering Contradiction:

Improvedepression detection sensitivityVSAvoidmagnetic component structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent utilizes changes in magnetic attractive force parameters during depression operations. By measuring the distance changes of conductive members caused by magnetic attraction variations, the system achieves sensitive depression detection. The parameter change approach allows simple structural implementation while maintaining high detection sensitivity.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If the distance between conductive members and coordinate input device is reduced during depression, then detection accuracy improves, but the risk of erroneous detection increases

Engineering Contradiction:

Improvedetection accuracyVSAvoiddetection reliability

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where the control device monitors distance changes of multiple conductive members and compares them against predetermined thresholds. This feedback system distinguishes between valid depression operations (where distance changes meet specific criteria) and erroneous detections, thereby improving reliability while maintaining detection accuracy through the distance reduction effect.

Inventive Principle:

Principle #23Feedback

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 configuration allows for more sensitive detection of depression operations, preventing erroneous recognition of depression and improving the accuracy of input operations by adjusting the attractive force and distance between detection points.

Implementation Method 1

a first rotating plate that is located on the coordinate input device side of the support plate and includes a plurality of second magnets generating attractive force to the first magnets

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Implementation Method 2

a coordinate input device configured to detect change in electrostatic capacitance

Methodology Applied

Scientific EffectElectrostatic capacitance change: Capacitance

Data Source

PatentUS11216142B2Operation support device

Publication Date: 2022.01.04 JAPAN DISPLAY INC

AI summary

An operation support device supports input operations on a coordinate input device configured to detect change in electrostatic capacitance. The operation support device includes a main shaft support member placed on the coordinate input device, an operation member, a support plate, a first rotating plate, and a first member. When, in conjunction with the operation member, a state in which the support plate and the first rotating plate make contact with each other changes to a state in which the support plate and the first rotating plate are separated from each other, difference between a distance from an end portion of the first member to the coordinate input device and a distance from a detection end portion of the second member to the coordinate input device decreases.