Encapsulation Layer with Inorganic-Filled Organic Matrix
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Solution Overview
Problem
Existing display technologies face challenges in effectively sealing displays to prevent moisture and oxygen penetration, which can lead to defects such as dark spots, while maintaining flexibility and reducing thickness, as traditional encapsulation methods often compromise on either moisture blocking or bending characteristics.
Innovation Solution
A display apparatus with an encapsulation layer that includes a matrix with internal spaces filled with inorganic material, where the inorganic material is bonded through functional groups of the organic material, and an inorganic layer is formed between the display and the encapsulation layer to enhance moisture and oxygen blocking without compromising flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional encapsulation methods are used to prevent moisture and oxygen penetration, then moisture blocking is improved, but thickness and rigidity increase compromising flexibility
Solution Approach 1:
The encapsulation layer utilizes an organic matrix material with inherent porous structure containing internal spaces. These pores are then filled with inorganic material to create a composite structure that provides moisture blocking while maintaining the original thin profile and flexibility of the organic matrix.
Solution Approach 2:
The invention creates a composite encapsulation layer by combining organic matrix material with inorganic filler material. The inorganic material is deposited within the internal spaces of the organic matrix, forming a hybrid structure that leverages the flexibility of organic materials and the moisture blocking properties of inorganic materials.
2Reliability
If inorganic material is deposited on the surface of the matrix, then moisture blocking is improved, but the material reacts with functional groups causing unwanted chemical bonds
Solution Approach 1:
The functional groups on the surface of the organic matrix are inactivated before the inorganic material deposition process. This preliminary action prevents unwanted chemical reactions between the inorganic material and surface functional groups, ensuring that inorganic material remains confined to the internal spaces of the matrix.
Solution Approach 2:
The inorganic material is selectively positioned within the internal spaces of the organic matrix rather than being deposited uniformly on the surface. This localized placement ensures that inorganic material fills the pores for moisture blocking without reacting with surface functional groups.
3Length of moving object
If the encapsulation layer is made thinner to maintain flexibility, then bending performance is improved, but moisture blocking capability deteriorates
Solution Approach 1:
The organic matrix material provides a three-dimensional network of internal spaces that can be filled with inorganic material. This porous structure allows the encapsulation layer to maintain thin dimensions while providing extensive surface area and pathways for moisture blocking through the inorganic filler.
Solution Approach 2:
The inorganic material is nested within the internal spaces of the organic matrix structure. This nesting approach allows the inorganic moisture-blocking material to be contained within the thin organic matrix, achieving effective moisture blocking without increasing the overall thickness of the encapsulation layer.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides excellent moisture and oxygen blocking characteristics while maintaining flexibility and reducing the thickness of the encapsulation layer, preventing defects and improving bending performance by ensuring the inorganic material is primarily formed within the internal spaces rather than on the surface.
Implementation Method 1
infiltrating a first raw gas into the internal space of the matrix; and infiltrating a second raw gas into the internal space of the matrix to form an inorganic material in the internal space by reacting of the second raw gas with the first raw gas
Implementation Method 2
an inorganic material bonded to the organic material through functional groups of the organic material of the matrix
Implementation Method 3
The surface treatment may include a plasma treatment
Data Source
AI summary
A display apparatus and a method of manufacturing a display apparatus, the apparatus including a substrate; a display on the substrate; and an encapsulation layer that seals the display, wherein the encapsulation layer includes a matrix including an organic material, and an inorganic material bonded to the organic material through functional groups of the organic material of the matrix, wherein the matrix includes an internal space adjacent to the organic material, the inorganic material being positioned in the internal space.