Groove Structure for Moisture Protection in Display Panels
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Solution Overview
Problem
Display devices with openings are susceptible to moisture penetration, which can damage surrounding display elements, as existing technologies lack effective methods to prevent moisture ingress while maintaining functionality and aesthetics.
Innovation Solution
A display panel design featuring a groove structure around the opening with stepped side surfaces, including recessed portions of varying widths, and a thin-film encapsulation layer with inorganic and organic layers to prevent moisture permeation, while allowing for functional and aesthetic integration of electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an opening is provided in the display area to add various functions, then the versatility and functionality of the display device are improved, but moisture can penetrate through the opening and damage the display elements
Solution Approach 1:
The groove structure is divided into multiple segments including a first groove, a second groove surrounding the first groove, and a dam portion protruding between them. This segmented approach creates multiple barriers against moisture while maintaining the opening's functionality for various electronic components.
Solution Approach 2:
The groove structure acts as an intermediary barrier between the opening and the display elements. It provides a protective interface that prevents direct contact between moisture and the display elements, while still allowing the opening to serve its functional purpose.
2Object-affected harmful factors
If a groove structure is added around the opening to prevent moisture, then the protection against moisture is improved, but the device complexity increases
Solution Approach 1:
The groove structure combines multiple protective features into a single integrated design. The first groove, second groove, and dam portion work together as a unified moisture barrier system, reducing the need for separate protective components and simplifying the overall structure.
Solution Approach 2:
The groove structure extends into the depth dimension of the display panel, creating vertical barriers that effectively block moisture without requiring additional lateral space. This dimensional approach provides robust protection while maintaining a compact overall structure.
3Object-affected harmful factors
If the groove includes multiple recessed portions with different widths, then the moisture sealing capability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The groove structure features local variations in width with the first groove having a first width and the second groove having a second width different from the first. This local quality differentiation creates enhanced sealing capabilities at critical locations while maintaining manufacturability through targeted precision requirements rather than uniform high precision throughout.
Data Source
AI summary
A display panel includes: a plurality of display elements arranged in a display area around an opening, each of the display elements including a pixel electrode, an emission layer above the pixel electrode, and an opposite electrode above the emission layer; and a groove between the opening and the display area, wherein the groove includes a first recessed portion having a first width in a first layer, and a second recessed portion in a second layer on the first layer and having a second width greater than the first width, and a side surface of the groove includes steps.