Support Assembly with Blind Holes for Flexible Display Flatness

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Solution Overview

Problem

Existing support assemblies for flexible display panels suffer from poor flatness and appearance defects such as stamping and indentation due to their hollow structure, which affects the uniform support and appearance of foldable or curved display devices.

Innovation Solution

A support assembly with blind holes arranged in an array on its surface, where the depth and number of blind holes vary across different regions to enhance bending performance and distribute stress evenly, improving the support and flatness of flexible display panels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a hollow structure is used in the support assembly, then weight is reduced, but flatness deteriorates and appearance defects occur

Engineering Contradiction:
Improveweight of support assemblyVSAvoidflatness of support assembly
Core Design Contradiction:
Weight of moving objectVSShape

Solution Approach 1:

The support assembly employs a porous structure with multiple blind holes distributed throughout the bending region. These blind holes create a porous material configuration that reduces weight while maintaining structural integrity and flatness, eliminating the appearance defects associated with hollow structures.

Inventive Principle:
Principle #31Porous materials

Solution Approach 2:

The blind holes are strategically distributed in the bending region with varying depths and spacing to create local quality variations. This localized structuring optimizes both weight reduction and flatness maintenance in different areas of the support assembly.

Inventive Principle:
Principle #3Local quality

2Shape

If the support assembly is made solid to improve flatness, then appearance defects are prevented, but weight increases

Engineering Contradiction:
Improveflatness of support assemblyVSAvoidweight of support assembly
Core Design Contradiction:
ShapeVSWeight of moving object

Solution Approach 1:

Instead of using a solid structure, the invention adopts a porous material approach with blind holes that provides sufficient structural support for flatness while significantly reducing weight compared to a completely solid assembly.

Inventive Principle:
Principle #31Porous materials

3Adaptability or versatility

If blind holes are added to enhance bending performance, then flexibility is improved, but structural complexity increases

Engineering Contradiction:
Improvebending performance of support assemblyVSAvoidstructural complexity of support assembly
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bending region is segmented into multiple zones with blind holes distributed at different positions and depths. This segmentation allows the structure to flex more effectively while maintaining a relatively simple overall design that can be manufactured using standard processes.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the bending area have blind holes with varying characteristics (depth, spacing, diameter) to optimize local bending performance, creating a structure that is highly adaptable to bending stresses without requiring complex overall redesign.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS11947396B2Support assembly, method for manufacturing same, and display device
Publication Date: 2024.04.02 CHENGDU BOE OPTOELECTRONICS TECH CO LTD
  • US11947396B2 patent drawing
  • US11947396B2 patent drawing
  • US11947396B2 patent drawing

AI summary

Provided is a support assembly. The support assembly includes at least one bending region, and a first surface and a second surface opposite to the first surface; wherein the at least one bending region is provided with a plurality of blind holes, wherein the plurality of blind holes are disposed in the second surface, the plurality of blind holes are arranged in an array, and a lengthwise direction of each of the plurality of blind holes is consistent with a bending direction of the bending region.