Electronic Pen Side Switch With Overlaid Touch Sensors
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Solution Overview
Problem
Existing electronic pens with side switches face issues of impaired operability and increased likelihood of erroneous operations due to the need for multiple pairs of touch sensor electrodes, which occupy limited surface area and are difficult to hold.
Innovation Solution
The electronic pen incorporates a side switch unit with two kinds of touch sensors of different detection systems, such as capacitive and pressure sensing sensors, superimposed on each other, allowing for various operation inputs including slide and push actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple pairs of touch sensor electrodes are provided to enable multiple state instruction inputs, then the instruction input capability is improved, but the operability deteriorates due to limited side surface area and difficulty in holding the electronic pen
Solution Approach 1:
The patent combines two different detection systems (capacitive touch sensor and pressure sensor) into a single sensor unit with superimposed sensor regions. This merging approach enables multiple state instruction inputs (light touch, heavy touch, sliding operations) without requiring multiple separate electrode pairs, thus maintaining the instruction input capability while preserving the electronic pen's holdability and operability
2Adaptability or versatility
If multiple pairs of touch sensor electrodes are provided to enable multiple state instruction inputs, then the instruction input capability is improved, but the reliability deteriorates due to increased likelihood of erroneous operations
Solution Approach 1:
The patent applies local quality by assigning different detection functions to different sensor types within the same sensor unit. The capacitive touch sensor detects light touches and sliding operations, while the pressure sensor detects heavy touches. This localized functional differentiation enables multiple state inputs with high reliability by reducing the likelihood of erroneous operations, as each sensor type is optimized for specific detection scenarios
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 easy and accurate multiple-state instruction inputs without compromising the pen's gripability, reducing the risk of erroneous operations.
Implementation Method 1
the first touch sensor is a capacitive touch sensor that detects an operation input based on a change in capacitance
Implementation Method 2
the second touch sensor is a resistance touch sensor that detects an operation input based on a change in resistance
Data Source
AI summary
An electronic pen is realized which includes a side switch that has a simple configuration and enables instruction inputs of a plurality of states to be performed easily and properly. The electronic pen has a side switch unit provided at a side surface of a pen body to be gripped by a user. The side switch unit includes a sensor unit in which capacitive sensors and pressure sensing sensors are provided as two kinds of touch sensors of different detection systems such that sensor regions (detection regions) are superimposed on each other. Thus, at least a case of performing an operation in such a manner as to act on one touch sensor and a case of performing an operation in such a manner as to act on both touch sensors simultaneously can be indicated through the side switch unit.