Rollable Screen Force Feedback via Sensor Thresholds
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Solution Overview
Problem
Users of rollable screen devices face challenges in providing clear and intuitive feedback for user inputs, such as accepting or declining calls, due to uncertainty about the force required and potential damage from excessive pressure, without clear indication of the device's response to input.
Innovation Solution
The implementation of a rollable screen device with sensors and actuators that provide tactile, visual, and audio feedback, allowing users to apply pressure to the screen's edges or corners, and automatically moving the screen to simulate button presses or create a wiggle effect to confirm input actions, ensuring accurate user interaction without damaging the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users apply pressure to the expanded portion of the screen to provide input, then user input can be detected, but the device may be damaged from excessive pressure
Solution Approach 1:
The device provides force feedback through the screen to indicate when the threshold force has been reached. This feedback mechanism allows users to understand the correct amount of pressure to apply, preventing excessive force that could damage the device while still enabling reliable input detection.
Solution Approach 2:
The system changes the physical state of the screen by applying a threshold force that triggers a detectable state change. This parameter-based approach converts continuous pressure into discrete input states, allowing the device to recognize valid input while ignoring excessive force that could cause damage.
2Area of stationary object
If the screen is made expandable to provide larger display, then display viewing area is increased, but the device structure becomes more complex
Solution Approach 1:
The display transitions from a static fixed-size screen to a dynamic expandable screen that can change its physical configuration. This dynamic approach allows the device to provide both compact and expanded viewing modes, increasing display area while managing structural complexity through controlled movement mechanisms.
3Loss of information
If force feedback is provided to indicate input receipt, then user interaction clarity is improved, but the device requires additional components
Solution Approach 1:
The existing screen structure serves multiple functions: it acts as both the display interface and the force feedback mechanism. By making the screen itself capable of providing tactile feedback, the device reduces the need for separate dedicated feedback components, thereby improving user interaction clarity while minimizing additional complexity.
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
This solution enhances user interaction by providing clear feedback on input receipt and action confirmation, reducing the risk of device damage and improving user experience by using sensors and actuators to manage force thresholds and screen movements.
Implementation Method 1
sensors positioned relative to the screen for detecting user input including one or more forces applied to an expanded portion of the screen
Data Source
AI summary
In aspects of providing user feedback via a rollable screen device, a mobile device has a housing and a screen moveable relative to the housing such that the mobile device has a compact form factor and an expanded form factor. The mobile device includes one or more sensors positioned relative to the screen for detecting user input including one or more forces applied to an expanded portion of the screen, where the expanded portion of the screen has extended from a compact portion of the screen. The mobile device implements a configuration manager configured to activate one or more components of the mobile device to indicate that the mobile device received the user input based on the one or more forces satisfying a threshold value.