Expandable Display Panel Mechanism for Large-Screen Portability

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Solution Overview

Problem

Electronic devices with display panels face a trade-off between having a large display for enhanced viewability and maintaining transportability, as reducing the device size limits the display size.

Innovation Solution

An expandable or retractable display panel mechanism using a geared mechanism and tensioner system that allows the display panel to transition between expanded and collapsed positions, enabling flexible adjustment of its size to accommodate viewing needs and transport requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If the display panel size is increased to enhance viewability, then the viewing quality is improved, but the device size increases and transportability deteriorates

Engineering Contradiction:
Improvedisplay panel areaVSAvoiddevice length
Core Design Contradiction:
Area of moving objectVSLength of moving object

Solution Approach 1:

The display panel transitions from a static fixed size to a dynamic adjustable size through the expansion mechanism. The panel can be expanded to a first size for enhanced viewing and collapsed to a second size for compact storage, allowing the system to adapt its dimensions based on operational needs versus portability requirements

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The display panel is designed to nest within itself or the device housing when collapsed. The flexible or foldable panel structure allows it to be folded back onto itself or stored within the device body, enabling the large display area to be condensed into a compact form factor that fits within the original device dimensions

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If the display panel is made expandable with mechanical mechanisms, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:
Improvedisplay size adaptabilityVSAvoidmechanical mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The expansion mechanism is divided into modular components including the geared mechanism for rotational motion conversion, the tensioner system for maintaining panel tension, and the flexible or foldable panel segments. This segmentation allows each component to be optimized independently and simplifies the overall system architecture

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The tensioner mechanism automatically maintains proper tension on the display panel during expansion and collapse operations without requiring manual intervention. The geared mechanism and tensioner work together in a self-regulating manner to ensure the panel remains taut and properly positioned throughout the transformation

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12524043B2Expandable display panels
Publication Date: 2026.01.13 HEWLETT PACKARD DEVELOPMENT COMPANY LP
  • US12524043B2 patent drawing
  • US12524043B2 patent drawing
  • US12524043B2 patent drawing

AI summary

An example electronic device includes a housing, and a display panel supported by the housing. The display panel comprises a pair of ends. In addition, the electronic device includes a shaft positioned within the housing that is coupled to the pair of ends of the display panel. The shaft is to fold the pair of ends of the display panel when the display panel is to transition from an expanded position to a collapsed position.