Touch Pressure Detection Module for Misoperation Reduction
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Solution Overview
Problem
Existing capacitive touch screen technologies often result in misoperations due to accidental key responses caused by unintended finger touches or body contact with the mobile phone, leading to user inconvenience.
Innovation Solution
A touch pressure detection module that incorporates a pressure sensing component connected to a control chip, which determines whether to perform a fingerprint identification operation based on pressure thresholds, reducing misoperations and saving space by using a fingerprint identification module with a pressure sensing component adjacent to it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If capacitive touch technology is used for virtual keys, then the touch screen can detect finger touches and generate key responses, but accidental touches or body contact cause misoperations and user inconvenience
Solution Approach 1:
The patent introduces pressure threshold as a new detection parameter beyond simple capacitive touch detection. By requiring the applied pressure to exceed a predetermined threshold value, the system distinguishes between intentional key presses and accidental touches or body contact, thereby reducing misoperations while maintaining touch responsiveness
Solution Approach 2:
The patent replaces traditional mechanical switch-based key detection with a capacitive touch system that incorporates pressure sensing. This substitution allows for more sophisticated detection mechanisms that can differentiate between various types of contact based on pressure characteristics rather than simple mechanical activation
2Reliability
If a pressure sensing component is added to detect pressure threshold, then misoperations can be reduced, but the device complexity increases
Solution Approach 1:
The patent integrates the pressure sensing component with the existing capacitive touch screen structure, combining multiple detection functions into a unified system. The pressure sensing component works in conjunction with the capacitive electrodes to provide both touch detection and pressure measurement, reducing the need for separate independent systems
Solution Approach 2:
The pressure sensing component serves multiple functions: it detects touch presence, measures pressure magnitude, and determines whether the pressure exceeds the threshold for valid key activation. This multi-functionality reduces the need for additional specialized components for each function
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 effectively reduces the probability of misoperations by requiring intentional pressure on the fingerprint identification module for a response and allows for precise pressure-based key operations, enhancing user experience and system efficiency.
Implementation Method 1
the pressure sensing component is configured to output an electrical signal, which is generated due to a pressure applied thereon
Implementation Method 2
One end, including the pressure sensing component, of the touch display component assembly is fixed to a middle frame via an elastomer
Data Source
Figure 1~2A
Figure 2B~4A
Figure 4B~5
AI summary
The present disclosure relates to the pressure detection technology, and discloses a touch pressure detection apparatus. The touch pressure detection apparatus includes: a cover, a fingerprint identification module and a pressure sensing component. The pressure sensing component and the fingerprint identification module are arranged below the cover, and the pressure sensing component is arranged adjacent to the fingerprint identification module. The pressure sensing component includes a first substrate and a second substrate that are oppositely arranged. A variable gap exists between the first substrate and the second substrate. When the fingerprint identification module is subject to an external pressure, the pressure is transferred to the pressure sensing component such that the variable gap between the first substrate and the second substrate changes due to the pressure.