Curved Display Window Protruding Structure Adhesive Leakage

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Solution Overview

Problem

Existing display devices with curved surfaces face challenges in maintaining an increased screen-to-body ratio and preventing adhesive leakage during manufacturing, which can lead to defects and foreign matter attachment.

Innovation Solution

A display device design featuring a window with a protruding structure and a manufacturing method that includes a blocking film to prevent adhesive leakage, where the adhesive layer is effectively contained between the display panel and the window, and a guide film is used to facilitate attachment without overlapping the adhesive.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a curved display area is implemented to increase screen-to-body ratio, then the aesthetic appearance and modern design are improved, but adhesive leakage occurs during manufacturing causing defects

Engineering Contradiction:

Improvecurved display areaVSAvoidadhesive leakage

Core Design Contradiction:

ShapeVSManufacturing precision

Solution Approach 1:

The window is divided into a flat area and a curved area, with the adhesive layer selectively applied only to the flat area. This segmentation prevents adhesive from reaching the curved area where it would leak, while still allowing the overall display to have a curved aesthetic appearance.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adhesive layer is applied with different properties in different regions: it is present in the flat area for proper bonding, but absent from the curved area to prevent leakage. This local differentiation of adhesive presence solves the contradiction between needing adhesive for bonding and avoiding adhesive leakage in curved regions.

Inventive Principle:

Principle #3Local quality

2Strength

If adhesive layer is applied to attach display panel to window, then bonding strength is improved, but adhesive leaks out in curved areas causing foreign matter attachment

Engineering Contradiction:

Improvebonding strengthVSAvoidforeign matter attachment

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The adhesive layer is segmented to be present only in the flat area and absent in the curved area. This ensures bonding strength is maintained where adhesive is applied, while eliminating the source of foreign matter that would come from leaked adhesive in curved regions.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The curved area, which naturally causes adhesive leakage and foreign matter problems, is converted into a benefit by making it adhesive-free. The curvature itself is preserved for aesthetic purposes, but the harmful adhesive application is eliminated from that specific region, turning the curved geometry from a problem source into a functional design feature.

Inventive Principle:

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

Data Source

PatentUS12058881B2Display device including protruding structure protruding from window and manufacturing method thereof

Publication Date: 2024.08.06 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes: a window; a display panel disposed on a rear surface of the window; an adhesive layer disposed between the window and the display panel and attaching the display panel to the window; and a protruding structure that protrudes from the rear surface of the window and includes a first surface facing the adhesive layer.