Digital Pen with Dynamic Microfluidic Buttons
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Solution Overview
Problem
Digital pens face challenges in providing user-friendly button placement as grip positions change during different usage scenarios, such as simulating traditional pens, pencils, or brushes, leading to inconvenient button locations.
Innovation Solution
A digital pen with dynamically formed microfluidic buttons that adjust positions based on user grip detection by sensors, using a microfluidic layer to create buttons on the pen body surface, allowing for convenient actuation of functions like changing color or brush size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If buttons are placed at fixed positions on the digital pen, then the device structure is simple and easy to manufacture, but the buttons become inconvenient to access when grip position changes during different usage scenarios
Solution Approach 1:
The patent applies the dynamics principle by making the button positions dynamic rather than fixed. Sensors detect the user's grip position and the microfluidic layer dynamically forms buttons at optimal locations relative to the detected grip, allowing the button positions to adapt and move based on usage conditions.
Solution Approach 2:
The system applies self-service by automatically detecting grip position through sensors and autonomously determining where to form buttons without requiring user intervention. The microfluidic layer self-activates to create buttons at the calculated optimal positions based on sensor data.
2Adaptability or versatility
If buttons are dynamically repositioned based on grip detection, then button accessibility improves for different usage modes, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent uses pneumatic and hydraulic principles through the microfluidic layer that utilizes fluid pressure to form buttons. By controlling fluid flow and pressure within the microfluidic channels, the system can dynamically create raised button structures at different positions on the pen body without mechanical moving parts.
Solution Approach 2:
The system applies parameter changes by modifying the physical state and position of the microfluidic layer based on sensor input. The fluid pressure, volume, and distribution parameters are adjusted to form buttons at varying locations corresponding to different detected grip positions.
3Ease of operation
If microfluidic buttons are used instead of traditional mechanical buttons, then button position flexibility improves, but the device complexity increases due to additional microfluidic components
Solution Approach 1:
The microfluidic layer serves multiple functions: it forms buttons at dynamic positions, provides tactile feedback to the user, and can be controlled through fluid pressure regulation. This multi-functionality reduces the need for separate mechanical button components, switches, and actuators that would otherwise be required.
Solution Approach 2:
The patent merges the button structure, actuation mechanism, and feedback system into a single integrated microfluidic layer. The fluid-filled chamber combines the physical button structure with the actuation capability, eliminating the need for separate mechanical components.
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 intuitive access to various functionalities regardless of grip position, enhancing the digital pen's versatility and user experience by dynamically repositioning buttons to match the user's grip, thereby improving usability across different usage modes.
Implementation Method 1
One or more microfluidic buttons are formed via action of a microfluidic layer on the pen body in a vicinity of the contact points
Data Source
AI summary
A digital pen with dynamically formed microfluidic buttons formed in variable positions on the digital pen comprises a pen body having a first end, a second end, and an external pen body surface. The pen tip attached or formed to the first end of the pen body. One or more sensors associated with the external pen body surface detect contact points where a user is holding the digital pen. The microfluidic buttons are formed via action of a microfluidic layer on the pen body in a vicinity of the contact points detected by the one or more sensors. A power source powers the digital pen. A communication module connects the digital pen to a software module. A software user interface associated with a processor maps computerized functions to the one or more microfluidic buttons and action of the pen tip to one or more functions.