Inorganic Pattern Barrier for Display Opening Contamination
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Solution Overview
Problem
Display devices with openings, such as cameras in smartphones, face contamination issues that affect the normal operation of surrounding elements, leading to reliability concerns in the peripheral areas.
Innovation Solution
A display device design featuring a substrate with a display area, an opening area, and a peripheral area, including an inorganic pattern portion and an intermediate layer with organic layers, where the intermediate layer is positioned on the upper surface of the inorganic pattern portion and not on its lateral surface, and the second electrode does not overlap the inorganic pattern portion, enhancing protection against contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an opening is formed in the display area to install a camera, then the camera can be integrated into the smartphone, but foreign particles can enter through the opening and contaminate the layers, causing elements to malfunction
Solution Approach 1:
An inorganic pattern portion is introduced as an intermediary structure between the opening area and the display area. This inorganic pattern acts as a barrier that prevents foreign particles from entering the display area through the opening, while allowing the camera to be integrated into the smartphone. The inorganic pattern portion is positioned in the peripheral area surrounding the opening area, creating a protective barrier without interfering with camera functionality.
Solution Approach 2:
The display area is segmented into a display area and a peripheral area, with the inorganic pattern portion positioned in the peripheral area. This segmentation allows the opening to be located in the display area for camera integration, while the inorganic pattern in the peripheral area provides protection against particle contamination. The intermediate layer is also segmented to be positioned on the inorganic pattern portion but separated from the display area intermediate layer.
2Adaptability or versatility
If layers are exposed by formation of the opening, then the camera can be installed, but the exposed layers become contaminated from the outside
Solution Approach 1:
The inorganic pattern portion serves as an intermediary barrier that blocks foreign particles from reaching and contaminating the exposed layers. It is positioned in the peripheral area adjacent to the opening area, creating a protective boundary that allows camera installation while preventing particle contamination of the underlying layers.
Solution Approach 2:
The inorganic pattern portion is formed in advance before the opening is created, establishing a protective barrier in the peripheral area. This preliminary action ensures that when the opening is formed for camera installation, the barrier is already in place to prevent subsequent particle contamination of the exposed layers.
3Manufacturing precision
If the intermediate layer is positioned on the lateral surface of the inorganic pattern portion, then coverage is improved, but foreign particles can still enter between layers
Solution Approach 1:
The intermediate layer is positioned selectively on the upper surface of the inorganic pattern portion rather than on the lateral surface. This local quality approach places the organic material only where it provides effective protection against particle entry, while avoiding positioning it on the lateral surface where it would not prevent particles from entering between layers. The inorganic pattern portion's lateral surface remains exposed to block particles, while the upper surface provides a platform for the intermediate layer.
Data Source
AI summary
A display device and a manufacturing method thereof, and a display device including: a substrate including a display area, an opening area positioned in the display area, and a peripheral area positioned between the opening area and the display area; a transistor positioned in the display area of the substrate; a first electrode connected to the transistor; a second electrode positioned on the first electrode; an inorganic pattern portion positioned in the peripheral area of the substrate; and an intermediate layer positioned between the first electrode and the second electrode, and including at least one organic layer positioned on the inorganic pattern portion. The inorganic pattern portion includes a plurality of inorganic patterns spaced apart from each other.