Vibration Units in Foldable Display Screen for Audio Output
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Solution Overview
Problem
The integration of a sound generating device, such as a loudspeaker, in mobile terminals limits the screen-to-body ratio due to its placement, resulting in a lower attractiveness for consumers seeking larger screens.
Innovation Solution
A flexible display screen with a first and second screen area, each equipped with a vibration unit, detects its folding state and controls the vibration units to produce sound, eliminating the need for a traditional sound generating device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional sound generating device (loudspeaker) is disposed at the top or bottom of the front facet, then audio output function is provided, but the screen-to-body ratio is limited and reduced
Solution Approach 1:
The patent combines the audio output function with the display screen by integrating vibration units directly into the screen structure. The screen itself serves dual purposes: displaying visual information and generating sound through vibration, thereby eliminating the need for separate loudspeaker components and maximizing the screen-to-body ratio.
Solution Approach 2:
The display screen is designed to perform multiple functions: it serves as both the visual display interface and the sound generation device. By embedding vibration units within the screen, the screen becomes a universal component that handles both visual and audio output, removing the constraint of dedicated speaker holes.
2Area of stationary object
If the screen is folded arbitrarily to increase screen-to-body ratio, then display area is improved, but audio output control becomes complex due to folding states
Solution Approach 1:
The patent implements dynamic control of vibration units based on the real-time folding state of the screen. The system detects whether the screen is folded or unfolded and automatically adjusts which vibration units are activated and at what intensity, enabling adaptive audio output that maintains quality regardless of screen configuration.
Solution Approach 2:
The system incorporates feedback mechanisms to detect the screen's folding state and uses this information to control the vibration units accordingly. This closed-loop control ensures that audio output remains optimal whether the screen is fully unfolded, partially folded, or completely folded, simplifying the user experience despite the underlying 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 the screen-to-body ratio by allowing for arbitrary folding of the screen without sound generation device constraints, providing a better user experience with improved audio output and spatial sound effects.
Implementation Method 1
a first vibration unit and a second vibration unit are symmetrically arranged on the screen... controlling the first vibration unit and the second vibration unit to vibrate
Data Source
AI summary
An audio output method applied to a mobile terminal, the screen of the mobile terminal comprises a first screen area provided with a first vibration unit, and a second screen area provided with a second vibration unit. The method includes: detecting a first folding state of the first screen area relative to the second screen area; and controlling working states of the first vibration unit and the second vibration unit according to the first folding state in a scenario that audio output is satisfied.