Force Sensor Pressure Compensation via Display Correlation
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Solution Overview
Problem
The sensitivity of force sensors in electronic devices is reduced due to bonding failures or gaps between the touch screen display and the force sensor, leading to inaccurate pressure value readings.
Innovation Solution
An electronic device with a processor that measures the correlation between touch screen display and force sensor pressure values to identify gaps and compensates the pressure value using a predetermined reference, ensuring accurate operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If bonding strength between touch screen display and force sensor is reduced, then device assembly becomes easier, but sensing sensitivity is reduced
Solution Approach 1:
The patent performs preliminary calibration to establish a correlation model between touch screen pressure values and force sensor pressure values before actual operation. This preliminary action enables real-time compensation without requiring strong bonding, thus resolving the contradiction between ease of assembly and sensing sensitivity.
Solution Approach 2:
The system continuously monitors the correlation between touch screen and force sensor readings, and dynamically compensates the force sensor values based on the established correlation. This feedback mechanism maintains accurate sensing even when bonding strength varies, addressing the contradiction between assembly ease and measurement precision.
2Ease of manufacture
If bonding strength between touch screen display and force sensor is reduced, then device assembly becomes easier, but pressure value accuracy is reduced
Solution Approach 1:
The system performs preliminary calibration to establish a correlation model between touch screen pressure values and force sensor pressure values before actual operation. This preliminary action enables real-time compensation without requiring strong bonding, thus resolving the contradiction between ease of assembly and pressure value accuracy.
Solution Approach 2:
The system continuously monitors the correlation between touch screen and force sensor readings, and dynamically compensates the force sensor values based on the established correlation. This feedback mechanism maintains accurate pressure readings even when bonding strength varies, addressing the contradiction between assembly ease and measurement precision.
3Measurement precision
If real-time gap detection and compensation is implemented, then sensing accuracy is improved, but device complexity is increased
Solution Approach 1:
The processor performs multiple functions: it processes touch screen input, reads force sensor data, establishes correlation models, and performs compensation calculations. By making the processor multi-functional, the system achieves real-time gap detection and compensation without adding dedicated hardware components, thus resolving the contradiction between sensing accuracy and system complexity.
Solution Approach 2:
The system uses its existing resources (processor, memory, and existing sensor connections) to perform self-calibration and self-compensation. The processor utilizes its own computational capabilities to maintain sensing accuracy without requiring external assistance or additional specialized components, addressing the contradiction between sensing accuracy and system complexity.
Data Source
AI summary
Various embodiments of the present invention relate to a method for compensating for a pressure value of a force sensor and an electronic device using the same, the electronic device comprising: a touch screen display; a force sensor bonded to a lower portion of the touch screen display; a memory; and a processor electrically connected to the touch screen display, the force sensor, and the memory, wherein the processor is configured to: obtain a pressure value of the touch screen display and a pressure value of the force sensor; measure the correlation between the obtained pressure value of the touch screen display and the pressure value of the force sensor; identify a spacing state between the touch screen display and the force sensor by using the correlation; determine whether the spacing state is of a predetermined distance or less and compensate for the pressure value for determining whether to operate the force sensor by using a predetermined reference value when the spacing state is of the predetermined distance or less, thereby sensing the spacing state in real time when spacing occurs between the touch screen display and the force sensor of the electronic device, and compensating for the pressure value of the force sensor such that user convenience can be improved. In addition to the embodiments disclosed in the present invention, other various embodiments are possible.