Pressure Sensing Unit Positioning for Electronic Apparatus
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Solution Overview
Problem
Existing electronic apparatuses face challenges in accurately sensing external pressure due to the integration of pressure sensing units with the display and housing components, leading to reduced sensitivity and accuracy in pressure detection.
Innovation Solution
The electronic apparatus incorporates a pressure sensing unit disposed between the window and the housing unit, or between the electronic panel and the window, allowing for the separation of the surface to which pressure is applied from the surface that senses the pressure, thereby improving sensitivity and accuracy by utilizing conductive patterns and nano-particles to detect variations in capacitance or resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pressure sensing unit is integrated with the display and housing components, then the device structure is simplified, but the sensitivity and accuracy of pressure detection is reduced
Solution Approach 1:
The pressure sensing unit is segmented from the display and housing components into a separate functional module. This segmentation allows the pressure sensing unit to be positioned optimally for detecting pressure applied to the front surface, while maintaining a simplified overall device structure through modular integration.
Solution Approach 2:
A sensing layer is introduced as an intermediary element between the front surface and the pressure sensing unit. This sensing layer transmits pressure information from the front surface to the pressure sensing unit, enabling accurate pressure detection while maintaining structural simplicity.
2Device complexity
If the pressure sensing unit is disposed on the same surface where pressure is applied, then the sensing structure is simplified, but the sensing accuracy is reduced due to interference from the application surface
Solution Approach 1:
Instead of placing the pressure sensing unit on the same surface where pressure is applied, the sensing unit is positioned on the opposite side of the component. Pressure applied to the front surface is transmitted through the component structure to the rear-side pressure sensing unit, eliminating interference from the application surface and improving sensing accuracy.
Solution Approach 2:
The pressure sensing unit is positioned in a different spatial dimension (rear side) relative to the pressure application surface (front side). This dimensional separation allows the sensing unit to detect pressure variations without direct interference from the surface where pressure is applied, while still maintaining structural simplicity through the component's inherent thickness.
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
This configuration enhances the sensitivity and accuracy of pressure sensing by allowing the surface to sense pressure from the opposite side, enabling precise detection of pressure variations, and simplifies the manufacturing process by integrating pressure sensing with existing components.
Implementation Method 1
The pressure sensing unit may include a first pattern having conductivity and a second pattern having the conductivity and spaced apart from the first pattern. The pressure sensing unit may sense a variation in capacitance between the first pattern and the second pattern.
Implementation Method 2
The electronic apparatus may further include a first panel that includes a resin making contact with the first pattern and the second pattern and a plurality of conductive nano-particles distributed in the resin. The pressure sensing unit may sense a variation in resistance of the first panel.
Data Source
AI summary
An electronic apparatus including a window having a front surface, a rear surface opposite to the front surface, and a plurality of side surfaces connecting the front surface and the rear surface, an electronic panel displaying an image through the front surface and including a surface corresponding to at least one of the side surfaces, a pressure sensing unit sensing an external pressure, and a housing unit accommodating the electronic panel and the pressure sensing unit. The external pressure is applied to a first surface among the side surfaces, and the pressure sensing unit is disposed on a second surface opposite to the first surface.