Display Panel Grip Force Sensor Integration
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Solution Overview
Problem
Current display devices lack an efficient method to detect and measure user input, such as grip force, which is essential for applications like muscle mass measurement, and often require separate devices for biometric data collection.
Innovation Solution
A display device with a first and second input sensor, each comprising pressure sensing cells and transmission/reception lines, connected to a readout circuit that converts signals into grip force signals, allowing for detection of touch area and grip force input, integrated into the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate device is used for biometric data collection, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines the display panel and input sensors into a single integrated device. The display panel includes both display functionality and biometric sensing capabilities (fingerprint sensor, grip force sensor), eliminating the need for separate biometric measurement devices while maintaining measurement accuracy through dedicated sensor components.
Solution Approach 2:
The display device is designed to perform multiple functions: displaying information, fingerprint authentication, and grip force measurement for biometric data collection. This multi-functional design allows one device to replace what would traditionally require multiple separate devices, reducing overall system complexity while providing comprehensive biometric capabilities.
2Adaptability or versatility
If multiple sensors are integrated into the display panel, then functionality is improved, but manufacturing complexity increases
Solution Approach 1:
The input sensing layer is divided into multiple independent sensing regions (first sensing area, second sensing area, third sensing area) with distinct functions. Each region can be manufactured and tested independently before final integration, simplifying the manufacturing process while providing diverse input detection capabilities including touch, grip force, and fingerprint sensing.
Solution Approach 2:
Different regions of the display panel are equipped with different sensor types optimized for specific functions: fingerprint sensors in designated areas for authentication, grip force sensors in edge regions for force measurement, and touch sensors for general input. This localized optimization allows each sensor type to be manufactured with specialized processes while maintaining overall system integration.
3Ease of operation
If biometric sensing is added to the display panel, then user convenience is improved, but device complexity increases
Solution Approach 1:
The fingerprint sensor and grip force sensor are integrated directly into the display panel structure, combining biometric authentication and measurement functions with the display device itself. This integration allows users to authenticate and provide biometric data using the same device they use for display, improving convenience while managing complexity through shared structural components.
Solution Approach 2:
The display device performs biometric authentication and grip force measurement autonomously without requiring external devices or complex setup. The integrated sensors automatically detect and process biometric data when the user interacts with the display, providing self-service functionality that simplifies user operation while the internal sensor system handles the complexity of biometric processing.
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 accurate measurement of grip force and muscle mass without additional devices, enhancing user convenience by providing biometric data alongside display functions.
Implementation Method 1
Each of the first input sensor and the second input sensor may be a resistance change type pressure sensor. Resistance of each of the first input sensor and the second input sensor may decrease as external pressure increases.
Data Source
AI summary
A display device including: a display panel; a first input sensor disposed on the display panel and configured to generate a first reception signal in response to a user input; a second input sensor spaced apart from the first input sensor on the display panel and configured to generate a second reception signal in response to the user input; and a readout circuit configured to generate an output signal corresponding to the user input in response to the first reception signal and the second reception signal.