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
Engineering 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
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
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
2Reliability
If encapsulation dividers are added around each pixel, then moisture protection and reliability are improved, but device complexity and manufacturing difficulty increase
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
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
Data Source
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.


