Flexible Liquid Crystal Display Bending and Fixing Method

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Solution Overview

Problem

Conventional liquid crystal display devices that display information on both sides by bonding two separate devices are costly and heavy, making it difficult to manufacture a single device that can bend to display information on both sides effectively.

Innovation Solution

A manufacturing method involving flexible substrates, where a display panel is created with a first and second substrate, bent to form a flat surface and a curved surface with a predetermined curvature radius, and then fixed with a cover member to maintain the curved shape, allowing for a single-sided display device that can show information on both sides.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two separate display devices are bonded to display information on both sides, then the display functionality is achieved, but the cost and weight increase

Engineering Contradiction:

Improvedisplay functionalityVSAvoiddevice weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of stationary object

Solution Approach 1:

The patent merges two separate display devices into a single integrated display device by bonding a first display panel and a second display panel together, sharing common structural components including the backlight unit, flexible substrates, and sealing structures. This integration achieves dual-sided display functionality while significantly reducing overall weight and cost compared to using two independent display devices.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent creates a multi-functional display device where a single integrated structure serves multiple purposes: the first display panel displays information on one side, the second display panel displays information on the opposite side, and they share common structural support and backlighting systems, making the device universally applicable for dual-sided information display applications.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If two separate display devices are bonded to display information on both sides, then the display functionality is achieved, but the manufacturing cost increases

Engineering Contradiction:

Improvedisplay functionalityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

3Weight of stationary object

If one display device is bent by 180 degrees to display information on both sides, then the weight and cost are reduced, but the manufacturing difficulty increases

Engineering Contradiction:

Improvedevice weightVSAvoidmanufacturing difficulty

Core Design Contradiction:

Weight of stationary objectVSEase of manufacture

Solution Approach 1:

The patent employs flexible substrates including a first flexible substrate and a second flexible substrate that can be bent and shaped. These flexible films allow the display panels to be configured in bent or folded arrangements to achieve dual-sided display while maintaining manageable manufacturing processes through controlled bonding and sealing techniques.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent utilizes curved or bent configurations of the flexible substrates and display panels, where the second display panel is bent at a predetermined curvature radius to form a curved surface. This curvature enables dual-sided display functionality while maintaining structural integrity through proper bonding and sealing methods.

Inventive Principle:

Principle #14Spheroidality (Curvature)

4Ease of manufacture

If flexible substrates are used to enable bending, then the manufacturing complexity is reduced, but the structural stability becomes challenging

Engineering Contradiction:

Improvemanufacturing complexityVSAvoidstructural stability

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The patent applies sealing members and bonding structures in advance to secure the flexible substrates and display panels before the bending operation. The sealing members are positioned and fixed to prevent liquid crystal leakage and maintain structural integrity during and after the bending process, ensuring stability is established before the flexible components are deformed.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent utilizes composite structures combining rigid and flexible components: rigid sealing members and bonding adhesives are combined with flexible substrates and display panels. This composite construction provides both the flexibility needed for bending and the structural stability required to maintain the device's integrity during operation.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS10591762B2Liquid crystal display device and method for manufacturing the same

Publication Date: 2020.03.17 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

A method for manufacturing a liquid crystal display device including a first substrate and a second substrate, each of the first substrate and the second substrate having flexibility, the method includes a first step of manufacturing a display panel having flexibility, the display panel including the first substrate and the second substrate, a second step of bending the display panel such that a display of the display panel is constructed with a first flat surface and a second flat surface and a curved surface disposed between the first flat surface and the second flat surface, the curved surface having a predetermined curvature radius; and a third step of fixing the display panel subjected to the second step to a cover member keeping the curved surface in a given shape.