Flexible Display Blade Speaker Alignment in Sliding Electronics

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Solution Overview

Problem

Existing electronic devices with sliding mechanisms, such as clamshell and slider devices, tend to be bulky in their closed position due to the requirement of two device housings, while also compromising on audio performance and display surface area.

Innovation Solution

An electronic device with a single device housing featuring a flexible display integrated into a 'blade' assembly that wraps around the housing, allowing the blade assembly to slide between extended, retracted, and peek positions, while maintaining axial alignment of permanent magnets to define an operable audio output device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two device housings are used to create sliding mechanisms (clamshell or slider), then the device can provide mechanical sliding functionality, but the device becomes bulky in closed position

Engineering Contradiction:
Improvesliding functionalityVSAvoiddevice volume in closed position
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The patent merges the display and speaker into a single integrated assembly that slides within one device housing. The flexible display is coupled to the speaker assembly, creating a unified moving unit that eliminates the need for separate housings while maintaining sliding functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The blade assembly serves multiple functions simultaneously: it acts as the display support structure, houses the speaker components, and provides the sliding mechanism. This multi-functionality reduces the number of separate components needed, thereby reducing overall device volume.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If two device housings are used for sliding mechanisms, then mechanical sliding is achieved, but audio performance is compromised

Engineering Contradiction:
Improvesliding mechanismVSAvoidaudio performance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The speaker assembly is integrated with the flexible display assembly, allowing the speaker to be positioned optimally within the single housing. The permanent magnets are strategically positioned on the blade assembly to ensure proper alignment with the speaker during sliding, maintaining audio performance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The blade assembly with integrated speaker and display is designed to slide dynamically between extended and retracted positions. The magnetic alignment system ensures that audio components remain properly positioned during movement, maintaining consistent audio performance across different blade positions.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If two device housings are used, then sliding functionality is provided, but display surface area is reduced

Engineering Contradiction:
Improvesliding functionalityVSAvoiddisplay surface area
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The flexible display is configured to wrap around the device housing, utilizing the three-dimensional space available on the housing surfaces. This allows the display to extend beyond traditional flat surfaces, increasing the effective display area without requiring additional housing volume.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The display and speaker assembly is merged into a single blade unit that can extend to maximize display surface area. When the blade is in the extended position, the flexible display can cover larger surface areas of the housing, providing more display real estate.

Inventive Principle:
Principle #5Merging (Combining)

4Adaptability or versatility

If permanent magnets are positioned on the blade assembly, then audio output functionality is maintained across blade positions, but magnetic alignment must be precise

Engineering Contradiction:
Improveaudio output across positionsVSAvoidmagnetic alignment
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The permanent magnets are pre-positioned on the blade assembly during manufacturing to ensure proper alignment with the speaker components. This preliminary positioning ensures that when the blade reaches its operational positions (extended or retracted), the magnetic alignment is already optimized for audio output.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The magnetic alignment system is designed to maintain proper positioning dynamically as the blade moves. The permanent magnets are strategically placed on the blade assembly to work in conjunction with the speaker's magnetic components, ensuring consistent audio performance regardless of the blade's position within the housing.

Inventive Principle:
Principle #15Dynamics

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 achieves a compact geometric form factor without sacrificing audio performance, while allowing for a larger display surface area, and ensures the device remains functional for audio output regardless of the blade assembly's position.

Implementation Method 1

positioned on the blade assembly a first permanent magnet and a second permanent magnet, wherein positioning of the blade assembly in the extended position causes the first permanent magnet and second permanent magnet to axially align, thereby defining an audio output device

Methodology Applied
Scientific EffectMagnetic field interaction: Magnetic Field

Implementation Method 2

when a coil coupled to the first permanent magnet is energized with an electrical audio signal, displacement is caused between the first permanent magnet and the second permanent magnet to deliver acoustic energy to an environment of the electronic device

Methodology Applied
Scientific EffectElectromagnetic conversion to acoustic energy: Electromagnetic Induction

Data Source

PatentUS20250199590A1Methods and Systems for Configuring a Speaker in an Electronic Device Having a Translating Flexible Display
Publication Date: 2025.06.19 MOTOROLA MOBILITY LLC
  • US20250199590A1 patent drawing
  • US20250199590A1 patent drawing
  • US20250199590A1 patent drawing

AI summary

An electronic device includes a device housing, a blade assembly carrying a blade and a flexible display and slidably coupled to the device housing, and a translation mechanism operable to slide the blade assembly relative to the device housing between an extended position and a retracted position. The electronic device includes a first audio output device component mechanically coupled to the blade assembly and a second audio output device component mechanically coupled to a surface carried by the device housing. Translation of the blade assembly to the extended position causes the first audio output device component and the second audio output device component to axially align, thereby defining an audio output device.