Tactile Force Feedback Touch Panel with Signal Detection
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Solution Overview
Problem
Conventional touch screens lack tactile force feedback functionality, relying on complex sensor layouts for pressure detection and feedback, which complicates precision and reliability.
Innovation Solution
A tactile force feedback touch panel with detection components and a protection layer that uses signal transmitting and receiving modules, such as infrared or ultrasound, to detect touch position and pressure without sensors, enabling precise touch positioning and customizable feedback through a feedback system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pressure sensors are placed at the four corners of the touch screen to detect touch pressure and generate feedback, then tactile force feedback function is achieved, but the layout becomes more complicated and reliability depends highly on sensor precision
Solution Approach 1:
The touch screen display panel is designed to perform multiple functions: it serves as both the display surface and the touch detection surface. By driving different segments of the display panel, the system can identify touch position and detect touch pressure without requiring separate sensor components, thus achieving tactile force feedback while simplifying the overall layout.
Solution Approach 2:
The patent combines the display function and touch detection function into a single integrated system. The same display panel segments are used for both visual output and tactile sensing, merging what would traditionally be separate components (display and sensors) into one unified structure, thereby reducing layout complexity.
2Adaptability or versatility
If pressure sensors are placed at the four corners of the touch screen to detect touch pressure, then tactile force feedback function is achieved, but the system becomes highly reliant on the precision of the touch sensors
Solution Approach 1:
The display panel segments serve dual purposes as both visual display elements and touch pressure sensors. This eliminates the need for separate, high-precision touch sensors, thereby improving system reliability by reducing dependency on specialized sensor components while maintaining the ability to detect touch pressure accurately.
Solution Approach 2:
The display panel itself performs the sensing function without requiring external sensors. By utilizing the inherent properties of the display segments (such as their ability to respond to pressure through changes in display characteristics), the system achieves self-sensing capability, improving reliability by eliminating external sensor dependencies.
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 precise touch positioning and customizable tactile feedback without the need for sensors, enhancing user interaction and maintaining display quality while providing waterproof and dustproof protection.
Implementation Method 1
The signal transmitting module is an infrared emitter, the signal receiving module is an infrared receiver
Implementation Method 2
The signal transmitting module is an ultrasound transmitter, and the signal receiving module is an ultrasound receiver
Implementation Method 3
two reflection plates, located beside the touch region and at a side of the touch region opposite to the side with the detection components respectively. The signal transmitting module is an infrared emitter, the signal receiving module is an infrared receiver, and the reflection plates are utilized for reflecting an IR light beam to the infrared receiver
Data Source
AI summary
A tactile force feedback touch panel is provided, which comprises a plurality of detection components for detecting a touch signal and a protection layer located on a surface of the detection components. Each of the detection components includes a signal transmitting module for transmitting a detection signal and a signal receiving module for receiving the detection signal. The protection layer covers the surface of the detection components and covers a touch region. The signal transmitting module and the signal receiving module are located at at least two adjacent sides of the touch region respectively. A tactile force feedback system is also provided. After the user presses the protection layer, the detection component may detect the condition of deformation of the protection layer according to the detection signal received by the detection component to implement regular touch function and the touch control function with different tactile feeling.