Bendable Display Module with Dual-Direction Bending

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Solution Overview

Problem

Existing flexible display devices can only switch between two bent states (inwardly-bent and unbent, or outwardly-bent and unbent), limiting their use functions and failing to meet the increasing user requirements for versatility.

Innovation Solution

A bendable display module that includes a flexible display panel with a first and second surface, and first and second bendable portions, allowing it to transition seamlessly between inwardly-bent, unbent, and outwardly-bent states, with the display region area increasing in the outwardly-bent state to compensate for missing display areas, enhancing user experience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the flexible display device is designed to bend in only one direction (inward or outward), then the structure is simpler, but the versatility and user experience are limited

Engineering Contradiction:
Improvebending state versatilityVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display panel is divided into multiple bendable portions (first bendable portion and second bendable portion) that can independently bend in different directions. This segmentation allows the display device to achieve multiple bending states (inwardly-bent, outwardly-bent, and unbent) by controlling different portions to bend in different directions, thereby increasing versatility without requiring a completely complex new structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The display device employs dynamic bending capabilities where the bendable portions can switch between different bending states (inward, outward, or flat) based on user needs. The device transitions from a static single-state design to a dynamic multi-state design, allowing the display panel to adapt its shape and display area according to different usage scenarios.

Inventive Principle:
Principle #15Dynamics

2Volume of moving object

If the display panel is bent inwardly, then the device size is reduced for better portability, but the display area is decreased

Engineering Contradiction:
Improvedevice sizeVSAvoiddisplay area
Core Design Contradiction:
Volume of moving objectVSArea of stationary object

Solution Approach 1:

The display device dynamically adjusts between compact and expanded states. When portability is needed, the first bendable portion bends inward to reduce device volume. When display area is needed, the second bendable portion can bend outward to expand the display area, allowing the device to optimize between these two conflicting requirements based on usage context.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention utilizes the third dimension (bending direction) to resolve the contradiction between device size and display area. By allowing bending in both inward and outward directions, the device can achieve compact form factor when bent inward while maintaining or expanding display area when bent outward, effectively using dimensional flexibility to overcome the trade-off.

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

3Area of stationary object

If the display panel is bent outwardly, then the display area is increased, but the device structure becomes more complex

Engineering Contradiction:
Improvedisplay areaVSAvoidstructure complexity
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The display panel is segmented into multiple portions with different bending capabilities. The second bendable portion is specifically designed to bend outward to expand display area, while the first bendable portion handles inward bending for compactness. This segmentation allows each portion to specialize in a specific bending function, achieving expanded display area without requiring the entire structure to become uniformly complex.

Inventive Principle:
Principle #1Segmentation

4Ease of operation

If the flexible display device supports only two bent states, then the device is easier to control, but the user experience and functionality are limited

Engineering Contradiction:
Improvecontrol simplicityVSAvoiduse functions
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The display device transitions from a two-state control system to a three-state or multi-state control system. By adding the ability to bend in both inward and outward directions, the device provides more operational states (unbent, inwardly-bent, outwardly-bent) while maintaining relatively simple control through independent actuation of different bendable portions, thereby enhancing functionality without significantly complicating control.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11747861B2Bendable display module and display device
Publication Date: 2023.09.05 HUBEI YANGTZE IND INNOVAION CENT OF ADVANCED DISPLAY CO LTD
  • US11747861B2 patent drawing
  • US11747861B2 patent drawing
  • US11747861B2 patent drawing

AI summary

Provided are a bendable display module and a display device. The bendable display module includes a display panel component including a flexible display panel, and a first surface and a second surface that are disposed opposite to each other. The first surface is the light-emitting surface of the flexible display panel. In the unbent state, a first bendable portion and a second bendable portion are flattened. In the inwardly-bent state, the first bendable portion is bent in the direction of the first surface facing away from the second surface. In the outwardly-bent state, the second bendable portion is bent in the direction of the second surface facing away from the first surface. The area of the display region of the flexible display panel in the outwardly-bent state is larger than the area of the display region of the flexible display panel in the unbent state.