3D Input Display Tilt Sensing Without Pressure Sensors
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Solution Overview
Problem
Existing input display devices require additional pressure-sensitive sensors to detect tilting operations on three-dimensional operation parts, increasing cost and complexity.
Innovation Solution
Detect tilting operations on three-dimensional operation parts using capacitive touch sensors by measuring the movement of touch positions on a deformable cover glass, without relying on pressure-sensitive sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If pressure-sensitive sensors are added to detect tilting operations on three-dimensional operation parts, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the tilting operation detection function with the existing capacitive touch sensor, merging multiple detection capabilities into a single sensor system. The capacitive touch sensor detects both touch positions on the flat surface and tilting operations on three-dimensional operation parts, eliminating the need for separate pressure-sensitive sensors and reducing device complexity
Solution Approach 2:
The capacitive touch sensor is designed to perform multiple functions: detecting touch positions on the flat touch panel surface and detecting tilting operations on three-dimensional operation parts. This multi-functional approach allows a single sensor system to replace what would traditionally require multiple specialized sensors, reducing both complexity and cost
2Measurement precision
If pressure-sensitive sensors are added to detect tilting operations, then detection accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The capacitive touch sensor serves dual purposes by detecting both standard touch inputs and tilting operations, eliminating the need for expensive additional pressure-sensitive sensors. This multi-functional design reduces manufacturing costs while maintaining detection accuracy through sophisticated signal processing algorithms that distinguish between different types of user interactions
3Adaptability or versatility
If additional sensors are installed for tilting detection, then operational functionality is improved, but device complexity increases
Solution Approach 1:
The patent merges the detection of tilting operations with the existing capacitive touch sensor system, combining multiple detection functions into a unified sensor architecture. This approach enhances operational versatility without requiring additional sensors or complex configurations, as the same sensor infrastructure handles both standard touch inputs and three-dimensional tilting gestures
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 low-cost and simple detection of tilting operations, enhancing the functionality and operability of three-dimensional operation parts.
Implementation Method 1
a capacitive touch sensor disposed on the display, a three-dimensional operation part disposed on the capacitive touch sensor and capacitively coupled to the capacitive touch sensor
Implementation Method 2
an elastic member that is elastically deformable in a horizontal direction
Data Source
AI summary
An input display device includes a display that displays an image, a capacitive touch sensor disposed on the display, a three-dimensional operation part disposed on the capacitive touch sensor and capacitively coupled to the capacitive touch sensor, a detector that detects a touch position of an operating finger on the three-dimensional operation part, and a determination part that determines whether or not tilting operation is performed on the three-dimensional operation part based on a movement amount of the touch position in a set direction detected by the detector.