Stylus Pen Core Segmentation for Touch Screen and Paper Writing

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Solution Overview

Problem

Conventional stylus pens fail to provide a true 'pencil-on-paper' experience, leading users to prefer writing on paper instead of touch screens due to the lack of tactile feedback.

Innovation Solution

A stylus pen with an electrically conductive pen core that includes a tip portion and an insertion portion, allowing the stylus to write on both touch screens and paper, featuring a design where the tip portion is made of an electrically conductive material capable of leaving marks on paper while the insertion portion is electrically conductive for signal communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional stylus pen is used to write on touch screen, then input instruction to touch screen is achieved, but the tactile feedback and pencil-on-paper experience are lost

Engineering Contradiction:

Improvewriting surface compatibilityVSAvoidtactile feedback

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The stylus pen is designed with a pen core that can function on both touch screens and paper surfaces. The pen core includes a conductive tip for touch screen interaction and a writable tip for paper, allowing a single device to replace both a touch screen stylus and a pencil, thereby achieving multi-functionality and improved adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The pen core is divided into distinct functional segments: a conductive insertion portion for signal transmission to the touch screen, and a separate tip portion for direct contact with paper or touch screen. This segmentation allows each part to be optimized for its specific function while maintaining overall versatility.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If a pencil is used to write on paper, then true pencil-on-paper experience is achieved, but input to touch screen is not possible

Engineering Contradiction:

Improvepencil-on-paper experienceVSAvoidtouch screen compatibility

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The stylus pen integrates both pencil-like writing capability and touch screen compatibility into a single device. The pen core can be inserted into the penholder to enable touch screen input, or used directly as a pencil for paper writing, providing true multi-functionality that eliminates the need to carry separate writing tools.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges the functions of a pencil and a touch screen stylus into one unified device. The pen core combines the writable tip of a pencil with the conductive properties needed for touch screen interaction, allowing users to write on both paper and touch screens with a single tool.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If the tip portion is made of electrically conductive material, then touch screen input is enabled, but the ability to write on paper is compromised

Engineering Contradiction:

Improvetouch screen input capabilityVSAvoidpaper writing capability

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The pen core is segmented into an insertion portion and a tip portion with different material properties. The insertion portion is electrically conductive for touch screen signal transmission, while the tip portion is designed for paper writing. This segmentation allows each segment to be optimized for its specific function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the pen core have different material qualities tailored to their specific functions. The tip portion has properties optimized for paper contact and writing, while the insertion portion has electrically conductive properties for touch screen interaction. This local differentiation of material properties resolves the contradiction between touch screen compatibility and paper writing capability.

Inventive Principle:

Principle #3Local quality

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 accurate and controllable input on touch screens while providing a 'pencil-to-paper' experience, allowing users to write or draw on both touch screens and paper with the same device.

Implementation Method 1

the tip portion is made of material being electrically conductive and writable on paper, the insertion portion is electrically conductive

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS11966522B2Stylus pen and pen core thereof

Publication Date: 2024.04.23 DEXIN CORP

AI summary

A stylus pen includes a penholder comprising a rod body and an electrode structure disposed on the rod body and a pen core comprising a tip portion located at one end of the rod body and an insertion portion connected to the tip portion and removably inserted into the rod body, the tip portion is spaced apart from the electrode structure, the insertion portion is electrically conductive, and the tip portion is made of material being electrically conductive and writable on paper.