Link Bar Adhesive Attachment for Transparent Display Devices

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Solution Overview

Problem

Current display devices face challenges in reducing manufacturing costs and achieving a completely transparent design while maintaining the aesthetic and applicability requirements, particularly in ensuring the back cover is securely attached without additional panels.

Innovation Solution

The use of a link bar with an adhesive layer to couple the back cover to the housing, eliminating the need for an additional cover and enhancing the display device's transparency and structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an additional cover is used to attach the back cover to the housing, then the attachment reliability is improved, but the device complexity and manufacturing cost increase

Engineering Contradiction:
Improveattachment reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent removes the additional cover component from the assembly, using only the link bar with adhesive layer to attach the back cover to the housing. This extraction of unnecessary components reduces device complexity and manufacturing cost while maintaining attachment reliability through the optimized adhesive connection.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent combines the attachment function into the link bar structure itself by integrating an adhesive layer directly onto the link bar. This merging of the attachment mechanism with the existing structural component eliminates the need for separate additional covers, simplifying the overall device structure.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If an additional cover is used to attach the back cover to the housing, then the attachment reliability is improved, but the manufacturing cost increases

Engineering Contradiction:
Improveattachment reliabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent eliminates the additional cover component, reducing the number of parts that need to be manufactured, stored, and assembled. This extraction directly lowers manufacturing costs while the adhesive layer on the link bar provides sufficient attachment reliability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent uses a cost-effective adhesive layer applied to the link bar instead of expensive additional cover components. The adhesive provides reliable attachment at a lower material and manufacturing cost, making the overall assembly more economical.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Reliability

If an additional cover is used to attach the back cover to the housing, then the attachment reliability is improved, but the transparency is reduced

Engineering Contradiction:
Improveattachment reliabilityVSAvoidtransparency
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The patent removes the additional cover that would obstruct the view through the display device. By using only the link bar with adhesive layer, the design achieves complete transparency from the front while maintaining secure attachment of the back cover.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The adhesive layer acts as an intermediary that provides secure attachment between the link bar and back cover without requiring visible mechanical fasteners or additional covers. This intermediary solution maintains transparency while ensuring reliable attachment.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution reduces manufacturing costs and achieves a completely transparent display device by securely attaching the back cover to the housing using a link bar with a UV-cured adhesive layer, improving the device's appearance and durability.

Implementation Method 1

a link bar connecting the housing to the display unit and having at least one opening, wherein a transparent fixer is mounted in the opening of the link bar and is attached to a back surface of the back cover

Methodology Applied
Scientific EffectAdhesive: Adhesive

Implementation Method 2

The first adhesive layer may be ultraviolet (UV)-cured by irradiation of UV rays passing through the fixer from the rear

Methodology Applied
Scientific EffectPhotopolymerisation: Photopolymerisation

Data Source

PatentEP3125027B1Display device
Publication Date: 2018.11.14 LG ELECTRONICS INC
  • EP3125027B1 patent drawingFigure 1
  • EP3125027B1 patent drawingFigure 2
  • EP3125027B1 patent drawingFigure 3

AI summary

A display device is disclosed. The display device includes a display unit including a display panel, a back cover positioned on a back surface of the display panel, and a light shielding plate positioned between the display panel and the back cover, a housing into which at least a portion of a lower area of the display unit is inserted, and on which a printed circuit board (PCB) is mounted, and a link bar connecting the housing to the display unit and having at least one opening. A transparent fixer is mounted in the opening of the link bar and is attached to a back surface of the back cover.