Frameless Display Sealing Member for Bezel Reduction

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Solution Overview

Problem

Conventional display devices require a separate top chassis to cover the bonding area of the display panel and driver IC, which increases the bezel width and costs, prompting the need for a frameless structure that minimizes this area without using a window substrate.

Innovation Solution

A frameless display device design featuring a first substrate with a display area and a non-display area for signal lines, a second substrate coupled to expose the non-display area, and a sealing member that overlaps the signal lines and bonding area, eliminating the need for a window substrate and reducing bezel width.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separate top chassis is used to cover the bonding area, then the bonding area is protected, but the bezel width increases and costs increase

Engineering Contradiction:

Improvebonding area protectionVSAvoidbezel width

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent merges the protective function previously performed by a separate top chassis into the sealing member itself. The sealing member is extended to overlap the bonding area, integrating the protection function into an existing component and eliminating the need for a separate covering structure, thereby reducing bezel width while maintaining protection.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The sealing member is designed to perform multiple functions: it seals the display panel, protects the bonding area, and covers the signal lines. By making the sealing member multi-functional, the patent eliminates the need for separate protective components, achieving both protection and bezel reduction.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If a window substrate is used to cover the bonding area, then the bonding area is protected, but the device complexity and cost increase

Engineering Contradiction:

Improvebonding area protectionVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the protective function from the window substrate concept and transfers it to the sealing member. By removing the window substrate and assigning its protective role to the sealing member, the patent reduces device complexity while maintaining the same level of protection for the bonding area.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The sealing member is designed to perform multiple functions including sealing, protecting the bonding area, and covering signal lines. This multi-functionality eliminates the need for a separate window substrate, thereby reducing structural complexity and component count.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If the sealing member is extended to overlap the signal line, then the signal line is protected from light interference, but the manufacturing complexity increases

Engineering Contradiction:

Improvelight interference on signal lineVSAvoidsealing member fabrication

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent combines the protection of signal lines from light interference into the sealing member's structure by extending it to overlap the signal lines. This integration protects the signal lines without requiring separate protective layers, and the extended sealing member can be manufactured using existing sealing processes.

Inventive Principle:

Principle #5Merging (Combining)

4Illumination intensity

If the polarizer is extended to maximize its size, then image quality is improved, but the risk of light interference with bonding area increases

Engineering Contradiction:

Improveimage qualityVSAvoidlight interference with bonding area

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The extended sealing member acts as an intermediary between the polarizer and the bonding area. It allows the polarizer to be extended for improved image quality while simultaneously blocking light from reaching the bonding area, thus preventing light interference. The sealing member mediates between the optical requirements and the protection requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10082690B2Display panel including sealing member at bonding area and display device including the same

Publication Date: 2018.09.25 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes a first substrate including: a display area in which an image is displayed, and a non-display area in which an image is not displayed and a signal line is disposed to transmit or receive an electrical signal to or from the display area of the first substrate; a second substrate coupled to the first substrate and exposing the non-display area of the first substrate; and a sealing member which is disposed between the first substrate and the second substrate and couples the first substrate and the second substrate to each other. The sealing member between the first substrate and the second substrate extends to overlap the signal line in the exposed non-display area of the first substrate.