OLED Display Buffering Member Impact Absorption

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Solution Overview

Problem

Organic light emitting diode (OLED) displays face mechanical weakness due to external impacts, as the sealing member is prone to damage from tensile stress, leading to potential breakage of the upper and lower substrates.

Innovation Solution

A manufacturing method involving a buffering member with graded density, made of urethane-based or acryl-based materials, is used to absorb impacts. This member is formed in multiple layers with varying densities and positions to enhance impact absorption and mechanical strength, and includes a buffer layer to prevent reflection and a polarization member to suppress external light reflection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a sealing member is used to protect the OLED display, then mechanical strength is improved, but the sealing member is prone to damage from tensile stress under external impacts

Engineering Contradiction:

Improvemechanical strengthVSAvoidresistance to external impact

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

A buffering member is introduced between the external environment and the sealing member to absorb impact forces before they reach the sealing member. The buffering member comprises a first buffering member with a first dummy buffering member and a second buffering member with a second dummy buffering member, creating a cushioning structure that protects the sealing member from tensile stress during external impacts.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The buffering member acts as an intermediary element between external impacts and the sealing member. By placing the buffering member (with its dummy buffering member structure) between the impact source and the sealing member, the patent mediates the force transmission, allowing the sealing member to maintain its protective function without being directly subjected to damaging tensile stress.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a dummy buffering member is added to the buffering member, then impact absorption is improved, but device complexity increases

Engineering Contradiction:

Improveimpact absorptionVSAvoidbuffering member structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The dummy buffering member is merged with the main buffering member to form an integrated buffering structure. The first dummy buffering member is combined with the first buffering member, and the second dummy buffering member is combined with the second buffering member, creating a unified structure that provides both cushioning and structural support without requiring completely separate components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The buffering member with the dummy buffering member serves multiple functions simultaneously: it provides impact absorption, maintains structural integrity, and protects the sealing member. This multi-functional design reduces the need for additional separate components, thereby managing complexity while improving impact absorption capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If multiple buffering members with different densities are used, then impact absorption is enhanced, but manufacturing complexity increases

Engineering Contradiction:

Improveimpact absorptionVSAvoidbuffering member fabrication

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Different regions of the buffering member have different density characteristics to optimize impact absorption for specific areas. The first buffering member and second buffering member have densities tailored to their respective positions and functional requirements, providing localized quality optimization without requiring complete redesign of the entire structure.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The density parameter of the buffering members is varied to optimize performance. By changing the density parameter of different buffering members (first buffering member vs. second buffering member), the patent achieves enhanced impact absorption while maintaining manufacturability through controlled parameter variation rather than fundamental design changes.

Inventive Principle:

Principle #35Parameter changes

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

The method effectively absorbs external impacts, enhances mechanical strength, and minimizes reflection, thereby improving the durability and optical characteristics of the OLED display.

Implementation Method 1

A buffering member including a dummy buffering member is adhered to the panel... effectively absorbs external impacts, enhances mechanical strength

Methodology Applied

Scientific EffectImpact absorption: Damping

Data Source

PatentUS9741771B2Method for manufacturing organic light emitting diode display

Publication Date: 2017.08.22 SAMSUNG DISPLAY CO LTD

AI summary

A manufacturing method of an organic light emitting device may include the following. A panel displaying an image is formed. A buffering member including a dummy buffering member is adhered to the panel. A film is adhered to an upper surface of the buffering member. The film and the dummy buffering member are removed.