Partition Wall on Organic Insulating Layer for Display Area Preservation
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Solution Overview
Problem
The challenge is to create a display apparatus that can accommodate various elements within a display area while maintaining the thinness and weight reduction of display devices, allowing for increased functionality without compromising the display area.
Innovation Solution
The display apparatus includes a substrate with a display area and an intermediate area, featuring an inorganic insulating layer, a pixel circuit, organic insulating layers, a pixel electrode, an intermediate layer, an opposite electrode, and a thin-film encapsulation layer with multiple inorganic and organic encapsulation layers, along with partition walls and a metal residual layer, which are strategically arranged to enhance structural integrity and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If various elements are arranged in the display area to add functions, then functionality is improved, but the display area is reduced
Solution Approach 1:
The display apparatus is divided into distinct functional zones: a display area for visual output and a non-display area for housing various functional elements (sensors, cameras, communication modules). This segmentation allows each area to serve its specific purpose without interfering with the other, enabling enhanced functionality while preserving the display area.
Solution Approach 2:
Functional elements are arranged in the non-display area, utilizing the vertical and lateral dimensions around the display region rather than occupying the display area itself. This dimensional reorganization allows multiple components to coexist without reducing the visible display space.
2Weight of stationary object
If the thickness and weight of display apparatus are reduced, then portability is improved, but structural integrity is worsened
Solution Approach 1:
The display apparatus employs composite material structures, including flexible substrates combined with rigid support elements, and multiple thin-film encapsulation layers (inorganic and organic) that provide both weight reduction and structural strength. The partition wall structure with dams also contributes to mechanical support while maintaining thinness.
Solution Approach 2:
The use of thin-film encapsulation layers and flexible substrate materials reduces the overall thickness and weight of the display apparatus. These thin films are engineered to provide adequate mechanical protection and structural integrity despite their minimal thickness.
3Reliability
If multiple encapsulation layers are added to protect functional elements, then reliability is improved, but device complexity is worsened
Solution Approach 1:
The encapsulation structure is segmented into multiple functional layers: inorganic encapsulation layers for barrier protection against moisture and oxygen, organic encapsulation layers for additional protection and flexibility, and partition walls with dams for mechanical support and isolation. Each layer serves a specific protective function, and the segmented structure allows for targeted optimization of each layer's properties.
Solution Approach 2:
The encapsulation layers serve multiple functions simultaneously: protecting functional elements from environmental degradation, providing mechanical support, enabling flexible device design, and facilitating the integration of various functional components. This multi-functionality justifies the increased structural complexity by delivering comprehensive protection and performance benefits.
Data Source
AI summary
A display apparatus includes a substrate defining an opening area and including a display area and an intermediate area between the opening area and the display area; an inorganic insulating layer in the display area and the intermediate area; a pixel circuit in the display area; an organic insulating layer on the pixel circuit; a pixel electrode on the organic insulating layer, an intermediate layer on the pixel electrode, and an opposite electrode on the intermediate layer; a thin-film encapsulation layer on the opposite electrode and comprising a first inorganic encapsulation layer, a second inorganic encapsulation layer, and an organic encapsulation layer between the first and second inorganic encapsulation layer; and a partition wall on the organic insulating layer and including at least two dams, wherein the inorganic insulating layer is in contact with the thin-film encapsulation layer in an area between the partition wall and the opening area.