Conductive Brush Touch Pen with Clicking Mechanism

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Solution Overview

Problem

Conventional touch input devices, particularly capacitance method touch pens, face issues with precision, durability, and damage to touch panels due to large contact areas and difficulty in performing tasks like dragging and cleaning, while also lacking a clear feedback mechanism for user input.

Innovation Solution

A touch input device featuring a conductive brush with a clicking feeling generation unit and a brush protection mechanism, allowing for soft interaction with touch panels, adjustable contact area, and integration of USB memory for enhanced functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a conventional capacitance method touch pen with a large diameter touch tip is used, then sensing precision is improved, but the size of the touch input device is increased and it cannot be used for soft drawing tasks

Engineering Contradiction:

Improvesensing precisionVSAvoidsize of touch input device

Core Design Contradiction:

Measurement precisionVSLength of moving object

Solution Approach 1:

The touch input device is divided into two separate touch tips: a first touch tip with a large diameter for precise sensing and input, and a second touch tip with a small diameter for soft drawing tasks. This segmentation allows each tip to be optimized for its specific function, resolving the contradiction between sensing precision and device size suitability for different tasks.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The device incorporates a movable structure that allows dynamic switching between the first touch tip (large diameter) and the second touch tip (small diameter). This dynamic configuration enables the user to select the appropriate tip based on the task at hand, whether precise input or soft drawing, thereby resolving the static contradiction between tip size requirements.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If a touch pen with a large contact area is used, then sensing precision is improved, but damage to the touch panel is increased during dragging tasks

Engineering Contradiction:

Improvesensing precisionVSAvoiddamage to touch panel

Core Design Contradiction:

Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the touch input device (the two touch tips) are given different properties: the first tip has a large contact area for precise sensing, while the second tip has a small contact area for soft interaction. This local differentiation of properties allows each tip to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If a resistive film method touch panel is used, then simple operation is achieved, but it cannot be used with capacitance method touch pens and vice versa

Engineering Contradiction:

Improvesimplicity of operationVSAvoidcompatibility with different touch panel methods

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The touch input device is designed with dual functionality by incorporating two different touch tips: one optimized for resistive film touch panels and another for capacitance method touch panels. This multi-functionality allows a single device to work with both touch panel types, resolving the contradiction between simplicity and versatility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 precise and durable touch input with reduced panel damage, provides tactile feedback, and allows for convenient drawing and cleaning tasks, while supporting both capacitance and resistive film methods, and storing data.

Implementation Method 1

a capacitance method touch panel... based on the fact that an electric field is formed when an electric current is made to flow on a surface of the panel

Methodology Applied

Scientific EffectCapacitance: Capacitance

Implementation Method 2

a clicking feeling generation unit... generating a feeling of clicking when the brush is brought in contact with the touch panel

Methodology Applied

Scientific EffectMechanical vibration: Vibration

Data Source

PatentUS8994699B2Touch input device

Publication Date: 2015.03.31 JUNG YOUNG WOO

AI summary

A touch input device comprises: a body made of a conductive material; a brush formed at one end of the body for external extraction, and which is made of a conductive material for touching a capacitive touch panel; and a unit for generating a clicking sensation which is installed within the body to generate a clicking sensation when the touch panel is touched by the brush, thereby enabling a user to sense a click when touching the touch panel, thus improving user convenience, enabling dragging to be smoothly performed, enabling pictures to be easily drawn, minimizing damage such as scratches or the like on the surface of the touch panel, and enabling the surface of the touch panel to be cleaned.