Window Member Pattern Layer Direct Glass Contact

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Solution Overview

Problem

The existing manufacturing process of window members for portable terminals is complex and costly due to the need for a film layer that does not contribute to the function or structure, increasing the thickness and requiring additional processing steps.

Innovation Solution

A window member configuration where a pattern layer is directly formed on the glass member using ultraviolet curing resin, with a lamination structure that includes a deposition layer and print layers, allowing for a metallic appearance and feel without exposing the bonding member, and simplifying the manufacturing process by eliminating the need for a conventional film layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a film layer is used to attach the pattern layer to the glass member, then the pattern layer can be formed, but the thickness of the window member increases and the manufacturing process becomes complex

Engineering Contradiction:
Improvepattern formation precisionVSAvoidmanufacturing process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent removes the film layer from the window member structure, extracting the unnecessary intermediate component. The pattern layer is now directly formed on the glass member surface using ultraviolet curing resin, eliminating the film layer while maintaining pattern formation capability. This reduces the number of components and simplifies the manufacturing process.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the pattern layer directly with the glass member by forming the ultraviolet curing resin pattern layer on the glass member surface. This combining eliminates the separate film layer and its associated bonding processes, reducing manufacturing steps and overall thickness while achieving the desired metallic appearance and feel.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If a film layer with double-sided tape is used, then the pattern layer can be attached to the glass member, but the manufacturing cost increases

Engineering Contradiction:
Improvepattern layer attachment reliabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent extracts and removes the film layer and double-sided tape from the manufacturing process. The ultraviolet curing resin is applied directly to the glass member, eliminating the need for separate film attachment steps and reducing material costs while maintaining reliable attachment through direct curing on the glass surface.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The ultraviolet curing resin serves multiple functions simultaneously: it provides the metallic appearance, creates the pattern effect, and bonds directly to the glass member without requiring separate adhesive layers. This self-service approach reduces the number of components and manufacturing steps, lowering overall costs.

Inventive Principle:
Principle #25Self-service

3Shape

If the periphery of the window member is made opaque to conceal bonding members, then the appearance is improved, but the transparency of the window member is reduced

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidlight transmission
Core Design Contradiction:
ShapeVSIllumination intensity

Solution Approach 1:

The patent applies local quality by making only the peripheral region of the glass member opaque through the ultraviolet curing resin pattern layer, while the central display area remains transparent. This localized treatment conceals the bonding members and provides a metallic appearance at the edges without affecting the overall light transmission and display visibility of the window member.

Inventive Principle:
Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach reduces manufacturing costs and complexity, enhances the precision and fineness of patterns, and diversifies the outer design of portable terminals by allowing direct contact between the pattern layer and the glass member, while maintaining a slim profile and concealing bonding units for an appealing appearance.

Implementation Method 1

The pattern layer 130 is formed along a periphery of a rear surface of the glass member 110 and contacts the rear surface of the glass member 110. In order to form the pattern layer 130, a transparent ultraviolet curing resin 250 is silk-screened on the rear surface of the glass member 110.

Methodology Applied
Scientific EffectUltraviolet curing: Photopolymerisation

Data Source

PatentEP2778145B1Window member and method of manufacturing the same
Publication Date: 2021.06.09 SAMSUNG ELECTRONICS CO LTD
  • EP2778145B1 patent drawingFigure 1A~3
  • EP2778145B1 patent drawingFigure 4
  • EP2778145B1 patent drawingFigure 5~6

AI summary

A window member includes: a glass member; a display member wherein the glass member has a bottom surface which faces and overlays the display member and a pattern layer provided on a first surface of the glass member and having a fine pattern. The pattern layer is silk-screen printed on the first surface of the glass member to directly contact the surface of the glass member. A method of manufacturing a window member, includes: forming a pattern layer such that the pattern layer contacts a surface of the glass member along a periphery of the glass member. The pattern layer is formed at a location which is offset inward from a periphery of the glass member.