Display Substrate Camera Opening Sealing with Obtuse Angle Encapsulation
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Solution Overview
Problem
The integration of a camera device into a display screen is hindered by the need for a specific installation position, which obstructs the design of full-screen displays with narrow borders, as existing solutions do not effectively seal the opening for the camera, leading to potential contamination and damage from impurities.
Innovation Solution
A display substrate with a display region featuring an organic functional layer, encapsulation layer, and a first barrier wall, where the encapsulation layer forms obtuse angles with the barrier wall, providing enhanced sealing and protection against impurities, and the barrier wall is designed in a positive and inverted trapezoidal shape to prevent cracking and improve adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera device is disposed on a side of the display screen outside the display region, then the camera device has a proper installation position, but the display region cannot be maximized and the border cannot be narrow
Solution Approach 1:
The camera device is integrated into the display region by creating a through-hole in the display substrate, allowing the camera to be nested within the display area rather than placed outside. This enables the display region to be maximized while accommodating the camera device within the same plane.
Solution Approach 2:
The encapsulation layer is designed with a three-dimensional structure featuring obtuse angles that extend beyond the barrier wall. This dimensional change allows the encapsulation layer to provide effective sealing and protection while accommodating the camera opening within the display region.
2Strength
If the encapsulation layer forms an acute angle with the barrier wall, then the structure is compact, but the encapsulation layer is prone to cracking and has poor adhesion
Solution Approach 1:
The encapsulation layer is designed with asymmetric obtuse angle structures rather than symmetric acute angles. The obtuse angles create a more stable geometric configuration that distributes stress evenly, preventing cracking while maintaining strong adhesion to the barrier wall.
Solution Approach 2:
The obtuse angle structure of the encapsulation layer acts as a pre-designed stress distribution mechanism that prevents cracking before it occurs. The geometry inherently cushions mechanical stress, reducing the likelihood of failure under thermal or mechanical loading.
3Area of stationary object
If the opening for the camera device is created in the display region, then the display area is maximized, but the opening is exposed to impurities and potential contamination
Solution Approach 1:
The encapsulation layer functions as a flexible protective film that seals around the camera opening. It conformally covers the barrier wall and extends to provide a continuous protective barrier, preventing impurities from entering the display region through the camera opening while accommodating the three-dimensional structure.
Solution Approach 2:
The encapsulation layer is formed using a composite structure involving the organic functional layer and the encapsulation material itself. This composite approach provides both structural support and protective sealing functions, ensuring the opening is sealed against contamination while maintaining the display region integrity.
Data Source
AI summary
A display substrate and a manufacture method thereof, and a display device are provided. The display substrate includes a display region, the display region includes an organic functional layer, an encapsulation layer, and a first barrier wall; the display region has a first opening, the first barrier wall surrounds an outer edge of the first opening, the organic functional layer surrounds the first barrier wall, and the encapsulation layer covers the organic functional layer and the first barrier wall; the encapsulation layer includes a first portion and a second portion, the first portion is configured to cover a portion of the organic functional layer close to the first opening; a second portion is configured to cover a side of the first barrier wall adjacent to the organic functional layer, the first portion forms an obtuse angle with the second portion.