Flexible Light-Emitting Panels on Curved Framework

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing light-emitting devices with curved surfaces face challenges in durability and reliability due to potential accidental force application, and there is a need for a design that balances structural simplicity with enhanced adhesiveness between components.

Innovation Solution

A light-emitting device featuring a framework that supports flexible panels with developable surfaces, including a curved and straight portions, forming a three-dimensional structure with a curved ridgeline, which enhances durability and reduces gaps between panels, allowing for efficient light emission without obstruction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a light-emitting device has a curved surface and simple structure, then ease of manufacture and device complexity are improved, but reliability and resistance to accidental forces deteriorate

Engineering Contradiction:

Improveease of manufactureVSAvoidreliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The light-emitting device is divided into multiple panels (first light-emitting panel, second light-emitting panel) that are flexibly supported by the framework. This segmentation allows each panel to independently absorb stress from accidental forces while maintaining the overall curved structure and simplicity of manufacture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent employs flexible light-emitting panels that can bend and conform to the curved framework structure. These flexible panels are supported by the framework in a way that allows them to absorb impact forces while maintaining the curved surface aesthetic and simple overall structure.

Inventive Principle:

Principle #30Flexible shells and thin films

2Strength

If adhesive bonding is used between structure body and second electrode layer, then strength and reliability are improved, but ease of manufacture deteriorates due to complex manufacturing processes

Engineering Contradiction:

ImprovestrengthVSAvoidease of manufacture

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

Instead of requiring adhesive bonding between layers, the patent segments the structure into discrete panels supported by the framework. This eliminates the need for complex adhesive bonding processes while maintaining structural strength through the mechanical support system.

Inventive Principle:

Principle #1Segmentation

3Reliability

If terminal portions are tucked in along the external shape of the framework, then structural integrity and reliability are improved, but device complexity increases

Engineering Contradiction:

Improvestructural integrityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The terminal portions are tucked in along the curved external shape of the framework, following the curved ridgeline geometry. This curved configuration provides structural integrity by distributing stresses along the curved path while maintaining visual simplicity consistent with the overall curved surface design.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentUS9755167B2Light-emitting device

Publication Date: 2017.09.05 SEMICON ENERGY LAB CO LTD

AI summary

A novel light-emitting device that is highly convenient or reliable is provided. The light-emitting device includes a framework, a flexible first light-emitting panel supported by the framework so as to form a first developable surface, and a flexible second light-emitting panel supported by the framework so as to form a second developable surface.