Expandable Screen Assembly with Detachable Auxiliary Display

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Conventional mobile devices have fixed-size screens, which do not adapt to varying user activities, offering suboptimal experiences for tasks like web navigation and video watching.

Innovation Solution

An expandable screen assembly for mobile devices, comprising a body with a main screen, a back cover with an auxiliary screen, and mechanisms of pins, springs, magnets, and triggers, allowing the screen size to be adjusted between single and dual screen modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-size screen is used in mobile devices, then the device structure is simple and easy to manufacture, but the screen cannot adapt to different user activities and provides suboptimal user experience

Engineering Contradiction:
Improvescreen size adaptabilityVSAvoidscreen assembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The screen assembly is segmented into a main screen portion and a detachable auxiliary screen portion. The auxiliary screen can be separated from or attached to the main screen, allowing the device to switch between single-screen and dual-screen modes. This segmentation enables adaptability for different user activities while keeping the base device relatively simple.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The screen configuration is made dynamic through the detachable auxiliary screen mechanism. Users can adjust the screen setup from a single main screen to a combined main and auxiliary screen configuration based on their current needs, such as web browsing versus video watching, thereby achieving adaptability without permanently increasing device complexity.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If a detachable auxiliary screen is added to create expandable screen assembly, then screen size adaptability is improved, but the device structure and mechanisms become more complex

Engineering Contradiction:
Improvescreen size customizationVSAvoidmechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The auxiliary screen is designed to be nested with or attached to the main screen. When not in use, the auxiliary screen can be stored in a compact form or detached state. When needed, it is attached to the main screen to form an expanded display configuration. This nesting approach enables screen size customization while minimizing the impact on device structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

A trigger mechanism serves as an intermediary component that facilitates the attachment and detachment of the auxiliary screen. The trigger, along with associated pins and springs, provides a straightforward mechanical interface for users to switch between screen configurations, thereby enabling screen customization without requiring complex control systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If pins, springs, and magnets are used for screen attachment mechanism, then screen switching between modes is enabled, but the device structure becomes more complex

Engineering Contradiction:
Improvescreen switching operationVSAvoidinternal structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The attachment mechanism utilizes springs and magnets to provide automatic engagement and retention of the auxiliary screen. When the trigger is actuated, the springs and magnets work together to automatically secure the auxiliary screen in place without requiring additional fastening steps. This self-service mechanism simplifies the user operation while the internal components handle the complexity of the attachment process.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent employs a combination of mechanical (pins, springs) and magnetic components for the attachment mechanism. The magnetic element provides holding force without direct mechanical contact, reducing friction and wear while simplifying the attachment and detachment process. This hybrid approach enables easy screen switching while managing the internal structure complexity through the use of non-contact magnetic forces.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enables users to customize the screen size for optimal experiences, enhancing usability and enjoyment by switching between small and large screen modes as needed.

Implementation Method 1

at least one magnet disposed in the slot and configured to attract the auxiliary screen

Methodology Applied
Scientific EffectMagnetism: Magnetism

Implementation Method 2

at least one spring disposed in the receiving recess and configured to apply a force to the pin

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS10481639B2Expandable screen assembly of mobile device
Publication Date: 2019.11.19 FU TAI HUA IND SHENZHEN
  • US10481639B2 patent drawing
  • US10481639B2 patent drawing
  • US10481639B2 patent drawing

AI summary

A screen assembly of a mobile device which can be expanded for a larger viewing area includes a body and a back cover. The body has a main screen and a slot to one side. The back cover is detachably mounted on a rear surface of the body. The back cover has a mounting board with auxiliary screen thereon and an insertion board. The back cover is mounted on the rear surface of the body when the auxiliary screen is not deployed, and the insertion board of the back cover is inserted into the slot of the body when the auxiliary screen is deployed.