Flexible Display Speaker Frame with Composite Materials
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Solution Overview
Problem
Conventional electronic devices using loudspeakers for acoustic signal output face challenges in miniaturization and portability while struggling to achieve high-quality acoustic signal emission, particularly with the introduction of flexible displays which often result in lower quality sound output.
Innovation Solution
An electronic apparatus is designed with a flexible display that incorporates a frame with different material portions and actuators to vibrate the display, emitting acoustic signals by generating bending waves, allowing for improved acoustic quality and compatibility with foldable or rollable display designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a loudspeaker is used for acoustic signal output, then acoustic signal quality is improved, but device size and weight increase, reducing portability
Solution Approach 1:
The patent merges the display and speaker functions into a single component. The display panel itself serves as the speaker diaphragm, eliminating the need for a separate loudspeaker unit. This integration reduces device weight and thickness while maintaining acoustic signal output capability, directly resolving the contradiction between acoustic quality and portability.
Solution Approach 2:
The display panel is designed to perform multiple functions: it serves both as the visual display surface and as the acoustic signal emission diaphragm. This multi-functionality allows the device to eliminate dedicated speaker components, reducing overall device weight and size while preserving acoustic output quality.
2Volume of moving object
If a flat type speaker using display as diaphragm is used, then device miniaturization is improved, but acoustic signal quality deteriorates
Solution Approach 1:
The frame is designed with non-uniform properties: the first portion has different material composition or thickness compared to the second portion. This local quality variation allows specific regions to optimize for different functions - some areas for acoustic resonance and others for structural support - thereby improving acoustic signal quality while maintaining miniaturization.
Solution Approach 2:
The frame employs composite material construction with at least two different materials having distinct acoustic and mechanical properties. This composite structure enables optimization of both acoustic signal emission quality and structural integrity in a compact form factor, resolving the contradiction between miniaturization and acoustic quality.
3Weight of moving object
If flexible display is used for miniaturization, then portability is improved, but acoustic signal quality deteriorates
Solution Approach 1:
The frame's first portion and second portion have different material properties or thicknesses to compensate for the flexible display's inherent limitations. This local quality differentiation creates optimal acoustic resonance conditions in specific regions, enhancing acoustic signal quality while preserving the portability benefits of the flexible display.
Solution Approach 2:
The combination of flexible display material with the composite frame structure (using multiple materials with different properties) creates a synergistic system. The composite frame compensates for the flexible display's acoustic limitations while maintaining its weight and flexibility advantages, resolving the contradiction between portability and acoustic quality.
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
The solution enhances acoustic signal quality and supports the miniaturization and portability of electronic devices by utilizing a flexible display with a frame structure composed of different materials and actuators, effectively addressing the limitations of traditional loudspeaker systems.
Implementation Method 1
the display vibrates based on driving of the at least one actuator to emit an acoustic signal to an outside
Implementation Method 2
emitting acoustic signals by generating bending waves
Data Source
AI summary
Provided is an electronic apparatus including a display, a frame supporting the display, and at least one actuator disposed at a rear side of the frame, the display vibrates based on driving of the at least one actuator to emit an acoustic signal to an outside, the frame includes a first portion and the and a second portion surrounding at least a part of the first portion, and the first portion and the second portion are formed of different materials. Various other embodiments are possible.