Support Substrate Hole Patterns for Wrinkle-Free Display Panel Bonding

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The attachment of a support substrate to a display panel causes wrinkles or displacements due to applied pressure, leading to product defects and increased power consumption.

Innovation Solution

A display device with a support substrate featuring hole patterns in its corners, which absorb pressure during bonding, preventing wrinkles and displacements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a support substrate is attached to the display panel to reinforce rigidity, then the structural strength is improved, but pressure is applied to the corners causing wrinkles or displacements

Engineering Contradiction:

Improverigidity of display panelVSAvoidflatness of support substrate

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The support substrate incorporates hole patterns (first, second, third, and fourth hole patterns) at its corners, transforming the solid structure into a porous one. These holes act as cushioning spaces that absorb pressure during bonding, preventing the substrate from deforming into wrinkles or displacements while maintaining the overall rigidity reinforcement function

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The hole patterns are pre-formed in the support substrate before bonding to the display panel. These pre-formed hollow structures serve as cushioning elements that anticipate and absorb the pressure that will be applied during the bonding process, preventing wrinkles and displacements before they can occur

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Strength

If pressure is applied during bonding of support substrate and display panel, then the bonding strength is improved, but wrinkles or displacements occur in the substrate

Engineering Contradiction:

Improvebonding strengthVSAvoiddefect-free bonding

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The hole patterns create a porous structure at the corners of the support substrate that allows pressure to be absorbed and distributed during bonding. This prevents concentration of stress that would cause wrinkles or displacements, enabling strong bonding without defects

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The hole patterns convert the harmful effect of pressure (which causes wrinkles) into a beneficial cushioning mechanism. The pressure that would normally deform the substrate is instead absorbed by the hollow spaces, allowing strong bonding to occur without causing defects

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20260079537A1Display Device

Publication Date: 2026.03.19 LG DISPLAY CO LTD

AI summary

The present disclosure relates to a display device including a spline area in a respective corner. To realize this, the display device may have a support substrate bonded to a display panel and having four spline areas respectively corresponding to four arc-shaped corners of the display panel, and the spline areas may have respective a hole patterns formed therein. During the bonding of the support substrate and the display panel, the bonding pressure can be absorbed by the hole patterns formed in the respective spline areas of the support substrate, thus preventing the occurrence of a wrinkle or displacement in the support substrate.