Mid-Plate Structure for Thin Robust Mobile Devices

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Mobile electronic devices face a challenge in balancing functionality and portability, as the desire for more features often leads to increased size, thickness, and weight, while maintaining handheld convenience requires devices to be smaller, thinner, and lighter, without compromising structural integrity.

Innovation Solution

A mobile device construction method involving a unified structure combining unibody and mid-plate construction, where a plate and ring are bonded together, optionally coated with a polymer seal, forming a mid-plate structure that supports internal components and enhances structural stability and rigidity, allowing for a thinner, robust, and economically manufactured device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If more features and functionality are added to mobile devices, then device capability is improved, but device size, thickness, and weight increase

Engineering Contradiction:
Improvedevice capabilityVSAvoiddevice weight
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The patent merges the plate and ring into a unified mid-plate structure through bonding, creating a single integrated component that provides both structural support and signal routing functionality. This consolidation reduces the number of separate parts and overall device weight while maintaining the capabilities needed for modern mobile devices.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The mid-plate structure serves multiple functions simultaneously: it provides mechanical support for internal components, routes signals between components, and maintains structural integrity. This multi-functionality eliminates the need for separate structural and signaling components, reducing overall device weight and complexity.

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

2Length of moving object

If device size and thickness are reduced for handheld convenience, then portability is improved, but structural integrity deteriorates

Engineering Contradiction:
Improvedevice thicknessVSAvoidstructural integrity
Core Design Contradiction:
Length of moving objectVSStrength

Solution Approach 1:

The patent employs a composite structure combining a plate and ring bonded together to form the mid-plate structure. This composite design provides enhanced structural integrity and rigidity compared to a single material, while maintaining a thin profile suitable for handheld devices.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The device structure is segmented into distinct functional components (plate, ring, seal, housing units) that are bonded together. This segmentation allows each component to be optimized for its specific function while maintaining overall structural integrity through the bonding interfaces.

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If unified structure combining unibody and mid-plate construction is used, then structural stability is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidconstruction complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent combines unibody and mid-plate construction approaches into a unified structure where the plate and ring are bonded together. This merging provides the structural stability of unibody construction with the modular flexibility of mid-plate design, achieving both goals without excessive complexity.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of manufacture

If traditional construction methods are used, then ease of manufacture is maintained, but device robustness and thinness are compromised

Engineering Contradiction:
Improvemanufacturing easeVSAvoiddevice robustness
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The device is divided into separable components (plate, ring, seal, housing units) that can be manufactured independently using standard processes and then assembled through bonding. This segmentation maintains manufacturing ease while enabling the creation of a robust, thin device structure that would be difficult to achieve with traditional unibody methods.

Inventive Principle:
Principle #1Segmentation

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 mid-plate structure enables a mobile device to be both thin and robust, supporting various components while maintaining structural integrity, enabling lower cost manufacturing and recycling, and allowing for reduced destruction during assembly and disassembly.

Implementation Method 1

a seal disposed between the ring and the plate, the plate and ring and seal forming a mid-plate structure; wherein the seal comprises a platform; and a housing unit bonded to the platform

Methodology Applied
Scientific EffectBonding: Adhesive

Data Source

PatentEP2835956B1Mobile electronic device and methods of manufacture thereof
Publication Date: 2019.01.02 BLACKBERRY LTD
  • EP2835956B1 patent drawingFigure 1
  • EP2835956B1 patent drawingFigure 2(A)~2(B)
  • EP2835956B1 patent drawingFigure 2(C)

AI summary

Disclosed herein is a mobile device comprising a plate; the plate being adapted to accommodate a printed circuit board; a ring bonded to the plate; a seal disposed between the ring and the plate, the plate and ring and seal forming a mid-plate structure; wherein the seal comprises a platform; and a housing unit bonded to the platform.