Flexible Display Fold Design for Portable Device Space Optimization

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Solution Overview

Problem

Existing portable electronic devices with touch-sensitive displays face challenges in optimizing limited space for user input and output, as they require larger display areas while maintaining portability and ease of use.

Innovation Solution

Incorporating a flexible display with a fold design where the non-display area is non-coplanar with the display area, allowing information to be displayed near the fold, thereby reducing the visible non-display area and increasing the available display space by folding the non-display area out of view.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the display area is enlarged to improve user input and output capabilities, then the device size increases, but portability deteriorates

Engineering Contradiction:
Improvedisplay areaVSAvoiddevice size
Core Design Contradiction:
Area of moving objectVSVolume of moving object

Solution Approach 1:

The display is divided into multiple display panels that can be independently positioned. The first display panel is positioned in a first location while the second display panel is positioned in a second location, allowing the display area to be segmented across different spatial regions rather than requiring a single large continuous area.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The display utilizes three-dimensional spatial arrangement by positioning display panels at different locations and orientations. The display area extends in multiple spatial dimensions rather than being confined to a single plane, effectively increasing the usable display area without proportionally increasing the device's footprint.

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

2Area of moving object

If the non-display area is reduced to increase display space, then the fold structure becomes more complex, but manufacturing difficulty increases

Engineering Contradiction:
Improvedisplay spaceVSAvoidfold structure
Core Design Contradiction:
Area of moving objectVSDevice complexity

Solution Approach 1:

The non-display area is extracted and repositioned to form a fold structure that extends from the display panel. This folded non-display area is positioned adjacent to the display area, separating the functional display region from the structural support region and allowing for simplified manufacturing of the display panel itself.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The fold structure is nested within the overall device housing, with the folded non-display area positioned within the housing boundaries. This nesting allows the complex fold structure to be contained within the device footprint without adding external complexity or requiring additional external components.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP2456175B1Portable electronic device including flexible display
Publication Date: 2014.01.15 BLACKBERRY LTD
  • EP2456175B1 patent drawingFigure 1
  • EP2456175B1 patent drawingFigure 2~4
  • EP2456175B1 patent drawingFigure 5

AI summary

A portable electronic device includes a first flexible display. The first flexible display includes a display area, a non-display area, and a first fold such that at least part of the non-display area is non-coplanar with the display area. Information is displayable near the first fold.