Flexible Display Guide Mechanism for Compact Housing

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Solution Overview

Problem

Existing display devices face challenges in compactly housing flexible display panels due to the complexity of rotating drive circuit substrates and the difficulty in forming and assembling hollow support bodies with slits, which can damage the display or cables during assembly.

Innovation Solution

A display device configuration that uses a plurality of guide members, where the distance between movable and fixed guide members differs depending on whether the flexible display panel is being pulled out or housed, allowing the panel to be slid in and out without rotating the drive circuit substrate, thus simplifying the installation process and reducing stress on the display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the display is wound around a cylindrical support body, then the display can be compactly housed, but the drive circuit substrate must be rotated together with the display, complicating the overall structure

Engineering Contradiction:
Improvehousing volumeVSAvoidstructure complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The patent divides the guide mechanism into multiple independent guide members (first guide member, second guide member, third guide member, fourth guide member) that can move independently. This segmentation allows the display to be wound without requiring rotation of the entire drive circuit substrate, thereby reducing structural complexity while maintaining compact housing.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces guide members as intermediary components between the display and the housing. These guide members facilitate the winding process by providing a path for the display to follow, eliminating the need for the drive circuit substrate to rotate with the display, thus simplifying the overall structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a hollow support body with a slit is used to house the drive circuit, then the display can be pulled out, but the support body is difficult to form and assemble, and damage to display or cable is likely during assembly

Engineering Contradiction:
Improveassembly easeVSAvoidsupport body formation precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

Instead of using a single hollow support body with a slit, the patent segments the support structure into multiple separate guide members. Each guide member can be manufactured independently with standard processes, avoiding the difficulty of forming precise hollow bodies with slits. The guide members are then assembled together to provide the necessary support and guidance.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The guide members serve as intermediary components that facilitate the pull-out operation without requiring a complex hollow support body. These simple, standardized guide members can be easily assembled and installed, reducing the risk of damage to the display or cables during assembly while maintaining the necessary functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If the drive circuit substrate is rotated with the display, then the display can be wound, but the installation process becomes difficult and time-consuming

Engineering Contradiction:
Improveinstallation speedVSAvoidrotation mechanism complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent extracts the rotation function from the drive circuit substrate by introducing independent guide members. The drive circuit substrate remains stationary while the guide members handle the winding and positioning functions. This separation simplifies the installation process, allowing for faster assembly without the complexity of coordinating substrate rotation.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The guide members are designed to self-guide the display during the winding process without requiring active rotation control of the drive circuit substrate. The display naturally follows the path defined by the guide members, eliminating the need for complex rotation mechanisms and speeding up the installation process.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11395422B2Display device
Publication Date: 2022.07.19 SHARP KK
  • US11395422B2 patent drawing
  • US11395422B2 patent drawing
  • US11395422B2 patent drawing

AI summary

A display device includes a flexible display panel, and an accommodation section configured to house the flexible display panel and provided with at least one movable guide member being movable and a plurality of fixed guide members configured to support the flexible display panel, where a distance between the at least one movable guide member and the plurality of fixed guide members at a time of pull-out is different from that at a time of housing.