Pressure-Sensing Display Layout Without Blocking the Display Area
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Solution Overview
Problem
Conventional pressure sensors with force sensitive resistors cannot simultaneously perform pressure sensing and display functions due to the presence of wires that occupy the pressure sensing area.
Innovation Solution
A pressure sensing display module is designed with a force sensitive unit in the wiring area and a display unit in the display area, allowing the force sensitive unit to be activated without interfering with the display, enabling both pressure sensing and display functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the force sensitive resistor lines are placed in the pressure sensing area, then the pressure sensing function is achieved, but the display function is blocked
Solution Approach 1:
The patent divides the device area into two distinct zones: a wiring area for the force sensitive resistor and its connections, and a display area for visual output. This spatial segmentation allows the force sensitive unit to be positioned in the wiring area surrounding the display area, enabling both pressure sensing and display functions to operate simultaneously without interference.
Solution Approach 2:
The force sensitive unit is configured to extend in a direction substantially perpendicular to the display surface, allowing it to sense pressure forces applied to the display area without occupying the two-dimensional display plane. This dimensional arrangement enables the force sensitive resistor lines to be routed around the periphery while maintaining full display area coverage.
2Area of stationary object
If the force sensitive unit is positioned to avoid the display area, then the display function is maintained, but the pressure sensing capability is reduced
Solution Approach 1:
The patent combines the force sensitive unit with the display unit in an integrated pressure sensing display module. The force sensitive unit is positioned in the wiring area that surrounds the display area, and both units work together as a unified system. When pressure is applied to the display area, the force sensitive unit detects the force and triggers the display unit to provide visual feedback, merging sensing and display functions in a coordinated manner.
Solution Approach 2:
The display area serves dual functions: it acts as both the visual display surface and the pressure sensing surface. The force sensitive unit positioned in the surrounding wiring area can detect forces applied to the display area, enabling the display area to function both as an information display medium and as a pressure-sensitive input surface.
3Reliability
If the force sensitive resistor lines occupy the pressure sensing area, then pressure sensing is enabled, but accidental touches cannot be distinguished from intentional presses
Solution Approach 1:
The patent implements a feedback mechanism where the display unit provides visual feedback in response to force detected by the force sensitive unit. When pressure is applied to the display area, the force sensitive unit detects the force magnitude, and the display unit responds by displaying visual information. This feedback loop allows the system to distinguish between accidental touches (insufficient force) and intentional presses (sufficient force), improving operation accuracy.
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
The solution allows for effective pressure sensing and display functionality, preventing misoperations by ensuring the force sensitive unit only activates with sufficient pressure, thus enhancing user interaction and feedback.
Implementation Method 1
The force sensitive resistor is a special component that can convert mechanical force into electrical signal, which is made of semiconductor materials with pressure resistance effect.
Data Source
AI summary
A pressure sensing display module has a display area and a wiring area surrounding a periphery of the display area. The pressure sensing display module includes a force sensitive unit provided in the wiring area; and a display unit provided corresponding to the display area. Information generated by the display unit is displayed on the display area.