Active Stylus Pen Combining Touch Input and Ballpoint Writing

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Solution Overview

Problem

Existing active stylus pens can only be used as input devices for electronic devices and cannot write on written objects like paper, requiring users to switch between pens for writing on screens and paper, which is inconvenient.

Innovation Solution

An active stylus pen that transmits a signal to a chip at the tip of a refill, allowing it to function as both an input device for touch panels and a writing utensil for paper.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an active stylus pen is designed to be thin for touch panel input, then it can be used as an input device for electronic devices, but it cannot write on written objects like paper

Engineering Contradiction:
ImprovefunctionalityVSAvoidconvenience
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The active stylus pen is designed to perform multiple functions: it can write on paper using a ballpoint pen refill and serve as an input device for touch panels. The pen body contains both a ballpoint pen refill for writing on paper and electronic components (antenna, battery, control circuit) for touch panel input, allowing a single device to replace multiple tools

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges two separate tools (ballpoint pen and active stylus) into one unified device. The ballpoint pen refill and electronic components are combined within the same pen body, enabling the user to switch between writing on paper and inputting into electronic devices without carrying separate pens

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If users carry multiple pens for different writing surfaces, then they can write on both paper and electronic devices, but it becomes troublesome to replace pens frequently

Engineering Contradiction:
Improvewriting capabilityVSAvoidtime for pen replacement
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The active stylus pen serves as a universal writing and input tool that works on both paper and electronic device touch panels. By integrating ballpoint pen functionality with electronic stylus capabilities in a single device, users eliminate the need to carry and switch between multiple specialized pens

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The pen automatically switches between writing mode and input mode based on the surface it contacts. When placed on paper, the ballpoint refill is used for writing; when placed on a touch panel, the electronic components activate for digital input, eliminating manual switching operations

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP4597270A1Active stylus pen
Publication Date: 2025.08.06 ZEBRA
  • EP4597270A1 patent drawingFigure 1
  • EP4597270A1 patent drawingFigure 2(a)~2(c)
  • EP4597270A1 patent drawingFigure 3

AI summary

The task is to provide an active stylus pen that can write on a written object, such as paper, like a ballpoint pen or a mechanical pencil. An active stylus pen transmitting a signal to a chip provided at a tip of a refill of a ballpoint pen.