Stretchable Display Form Factor Adaptation via Sensor Control

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Solution Overview

Problem

Existing display devices lack flexibility and adaptability to change form factors, limiting their usability across different applications such as tablets, mobile phones, and watches without compromising display quality or energy efficiency.

Innovation Solution

A stretchable display device with a rear surface portion containing a battery and controller, folding and bending portions, and sensor units that sense deformation to adjust the display area and form factor, allowing the device to be used as a tablet, mobile phone, or watch by controlling the display unit's size and position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-size display is used in traditional devices, then the display structure is simple and easy to manufacture, but the device cannot adapt to different form factors (tablet, mobile phone, watch)

Engineering Contradiction:
Improveform factor adaptabilityVSAvoiddisplay structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display device employs a stretchable display that can dynamically change its size and shape. The display unit is designed to be deformable, allowing it to expand and contract based on the desired form factor. This dynamic capability enables the same display to function across multiple device types (tablet, mobile phone, watch) without requiring separate fixed-size displays for each form factor.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the physical parameters of the display by using stretchable materials and structures. The display's area, shape, and dimensions are no longer fixed but can be adjusted by altering the physical state of the stretchable components. This parameter change allows the display to adapt to different form factors while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #35Parameter changes

2Use of energy by moving object

If the display area is reduced for smaller form factors, then energy consumption decreases, but the display quality and viewing experience deteriorate

Engineering Contradiction:
Improveenergy consumptionVSAvoiddisplay quality
Core Design Contradiction:
Use of energy by moving objectVSManufacturing precision

Solution Approach 1:

The stretchable display allows the device to dynamically adjust its display area according to the active form factor. When used as a watch, the display contracts to a smaller area, reducing power consumption. When used as a tablet, the display expands to a larger area, providing higher display quality. This dynamic adjustment resolves the contradiction between energy consumption and display quality by allowing the display to optimize both parameters based on the current usage scenario.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the display is folded or bent to change form factor, then versatility improves, but the display may be damaged or compromised

Engineering Contradiction:
Improveform factor transformationVSAvoiddisplay integrity
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The invention uses a stretchable display constructed with flexible materials and thin-film structures that can be safely folded and bent. The display unit, rear surface portion, and internal components are designed with flexibility in mind, allowing repeated folding and bending cycles without compromising structural integrity or display quality. This flexible construction enables form factor transformation while maintaining display reliability.

Inventive Principle:
Principle #30Flexible shells and thin films

4Adaptability or versatility

If sensor units and control mechanisms are added to enable form factor changes, then adaptability improves, but device complexity increases

Engineering Contradiction:
Improveform factor switching capabilityVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The device incorporates sensor units that automatically detect the current form factor configuration (tablet, mobile phone, watch) and trigger appropriate display adjustments without requiring complex user input or manual configuration. The controller receives sensor data and autonomously manages the display's size and shape changes. This self-service approach enables form factor adaptability while keeping the control system relatively simple, as the sensors and controller handle the complexity automatically.

Inventive Principle:
Principle #25Self-service

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 seamless transformation between form factors without damaging the display, improving energy efficiency and usability by dynamically resizing the display area based on user needs, enhancing the device's versatility and convenience.

Implementation Method 1

a sensor unit included at the folding portion and/or the bending portion and sensing folding and/or bending of the device

Methodology Applied
Scientific EffectDeformation sensing:

Implementation Method 2

The coupling portions can be formed of a magnetic unit that fixes the two ends of the device by using a magnetic force

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS10950148B2Device including stretchable display and method of controlling the device
Publication Date: 2021.03.16 SAMSUNG DISPLAY CO LTD
  • US10950148B2 patent drawing
  • US10950148B2 patent drawing
  • US10950148B2 patent drawing

AI summary

A device including a stretchable display and a method of controlling the device are disclosed. In one aspect, the device includes a stretchable display including a display unit formed on a front side of the stretchable display and configured to display images in a display area. The device also includes a support attached to a rear surface of the stretchable display and including a battery and a controller. The device further includes a sensor formed on the support. The support further includes a folding portion along which the support and stretchable display are configured to be folded and a bending portion along which the support and stretchable display are configured to be bent. The sensor is formed at a position corresponding to the folding portion or the bending portion and the sensor is configured to sense when the device is bent or folded.