Corner Display Encapsulation Dividers Against Moisture Dark Spots

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Solution Overview

Problem

Display devices with corner portions are prone to moisture permeation, leading to pixels appearing as dark spots due to particles, which can damage adjacent pixels and affect image display.

Innovation Solution

Incorporating a display device design with encapsulation dividers and dams around each pixel, ensuring individual encapsulation of emission areas to prevent moisture-induced dark spots, even if one pixel is affected.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If display devices are designed with corner portions and side portions bent at edges, then display versatility and design flexibility are improved, but moisture permeation risk increases leading to dark spots

Engineering Contradiction:
Improvedisplay versatilityVSAvoidmoisture resistance
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The encapsulation layer is divided into multiple independent encapsulation regions, each surrounding individual pixels or groups of pixels. These regions are separated by dividing lines that extend from the pixel electrode edges to the common electrode, creating isolated compartments that prevent moisture from spreading between pixels when one pixel is compromised

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The dividing lines act as intermediary barriers between adjacent pixels. These lines form part of the encapsulation structure and create physical separation that blocks moisture penetration paths, serving as protective mediators that prevent harmful moisture from one pixel affecting neighboring pixels

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If encapsulation dividers are added around each pixel, then moisture protection and reliability are improved, but device complexity and manufacturing difficulty increase

Engineering Contradiction:
Improvepixel protectionVSAvoidencapsulation structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The same encapsulation layer materials and deposition processes used for standard pixel encapsulation are also used to form the dividing lines and encapsulation regions. The encapsulation layer serves multiple functions: protecting individual pixels, creating separation barriers, and preventing moisture ingress at pixel boundaries, all through a single multi-functional structure

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The dividing lines and encapsulation regions are formed during the initial encapsulation process before device assembly and testing. By pre-forming these protective structures during manufacturing, the complexity is managed upfront rather than requiring additional post-assembly steps or complex real-time protection mechanisms

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12550563B2Display device including a divider
Publication Date: 2026.02.10 SAMSUNG DISPLAY CO LTD
  • US12550563B2 patent drawing
  • US12550563B2 patent drawing
  • US12550563B2 patent drawing

AI summary

A display device includes: a display panel including a front portion, a first side portion extended from a first side of the front portion, a second side portion extended from a second side of the front portion, and a corner portion between the first side portion and the second side portion. The display panel includes: a first display area on the front portion and including first pixels; and a second display area at the corner portion and including second pixels. The second display area includes a first encapsulation divider between adjacent ones of the second pixels.