Foldable Display Rear Support Structure for Flatness Under Shock

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Solution Overview

Problem

Existing electronic apparatuses with flexible displays face challenges in stably supporting the display in a folded state, particularly in maintaining flatness and preventing damage from shock due to the thin and vulnerable nature of flexible displays.

Innovation Solution

The electronic apparatus incorporates a hinge device with a hinge main body, support plates, and locking strips that support the rear face of the display, allowing it to be stably folded and unfolded while maintaining flatness and preventing deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a flexible display is used to enable folding, then the display can be made compact when not in use, but the display becomes vulnerable to shock and deformation due to its thin structure

Engineering Contradiction:
Improvedisplay size when not in useVSAvoiddisplay vulnerability to shock
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

Rear face support structures are pre-installed behind the flexible display to provide protective support before shock occurs. The support includes a rear face support portion that extends along the folding line and additional support plates, creating a cushioning effect that prevents deformation and damage when the display is folded or subjected to external forces.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Adaptability or versatility

If the display is folded repeatedly, then the electronic apparatus can be made more portable, but the display may deform or fail due to stress from repeated folding operations

Engineering Contradiction:
Improveportability through foldingVSAvoiddisplay structural integrity
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The rear face support structure is pre-installed to distribute and absorb stress from repeated folding operations. The support portion extending along the folding line and the support plates provide continuous protection, preventing deformation and maintaining structural integrity throughout the folding cycle.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The invention uses a flexible display structure that can be folded, combined with a rigid rear face support structure. This combination allows the thin flexible display to bend and fold while the rigid support maintains its shape and prevents deformation, enabling portable folding functionality while preserving structural stability.

Inventive Principle:
Principle #30Flexible shells and thin films

3Manufacturing precision

If the rear face of the flexible display is supported to maintain flatness, then the display is protected from deformation, but the structure becomes more complex with additional support components

Engineering Contradiction:
Improveflatness of display rear faceVSAvoidnumber of support components
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

Instead of providing uniform support across the entire display, the invention places support structures locally at critical areas. The rear face support portion extends specifically along the folding line where stress is concentrated, and support plates are positioned at specific locations, providing precise support where needed while minimizing overall structural complexity.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS12297859B2Electronic apparatus
Publication Date: 2025.05.13 LENOVO (SINGAPORE) PTE LTD
  • US12297859B2 patent drawing
  • US12297859B2 patent drawing
  • US12297859B2 patent drawing

AI summary

An electronic apparatus includes: a first chassis; a second chassis which is adjacent to the first chassis; a hinge device which so connects the first chassis and the second chassis as to be rotationally movable relative to each other between a first posture that the first chassis and the second chassis are so folded as to mutually overlap in a surface normal direction and a second posture that the first chassis and the second chassis are mutually arrayed in a direction which is vertical to the surface normal direction; and a display which is so installed as to range from the first chassis to the second chassis and has a folding region which is folded in accordance with relative rotational movement of the first chassis and the second chassis.