Display device
US-2024324289-A1 · Sep 26, 2024 · US
Display device and method of manufacturing the same
US2024306421A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024306421-A1 |
| Application number | US-202418663493-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 14, 2024 |
| Priority date | Dec 10, 2020 |
| Publication date | Sep 12, 2024 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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A display device includes a light emitting structure disposed on a substrate, and a thin film encapsulation layer disposed on the light emitting structure and including an inorganic layer containing silicon oxynitride and an organic layer. A portion of the inorganic layer has a stress intensity factor of about 1.6 MPa or more.
First claim
Opening claim text (preview).
What is claimed is: 1 . A display device, comprising: a light emitting structure disposed on a substrate; and a thin film encapsulation layer disposed on the light emitting structure, the thin film encapsulation layer including a first inorganic layer which contains silicon oxynitride, an organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the organic layer and which contains silicon oxynitride, wherein the second inorganic layer includes: a second lower inorganic layer; and a second upper inorganic layer disposed on the second lower inorganic layer, and wherein a number of dangling bonds of the second upper inorganic layer is less than a number of dangling bonds of the second lower inorganic layer. 2 . The display device of claim 1 , wherein a stress intensity factor of the second upper inorganic layer is greater than a stress intensity factor of the second lower inorganic layer. 3 . The display device of claim 2 , wherein the stress intensity factor of the second upper inorganic layer is about 1.6 MPa or more, and wherein the stress intensity factor of the second lower inorganic layer is less than about 1.6 MPa. 4 . The display device of claim 1 , wherein a spin density of the second upper inorganic layer is less than a spin density of the second lower inorganic layer. 5 . The display device of claim 1 , wherein a spin density of the second upper inorganic layer is less than about 9.0×10 18 spins/cm 3 , and wherein a spin density of the second lower inorganic layer is about 9.0×10 18 spins/cm 3 or more. 6 . The display device of claim 1 , wherein a difference between a refractive index of the second upper inorganic layer and a refractive index of the second lower inorganic layer is less than about 0.05. 7 . The display device of claim 1 , wherein the first inorganic layer includes: a first lower inorganic layer; and a first upper inorganic layer disposed on the first lower inorganic layer, and wherein a number of dangling bonds of the first upper inorganic layer is less than a number of dangling bonds of the first lower inorganic layer. 8 . The display device of claim 7 , wherein a stress intensity factor of the first upper inorganic layer is greater than a stress intensity factor of the first lower inorganic layer. 9 . The display device of claim 8 , wherein the stress intensity factor of the first upper inorganic layer is about 1.6 MPa or more, and wherein the stress intensity factor of the first lower inorganic layer is less than about 1.6 MPa. 10 . The display device of claim 7 , wherein a spin density of the first upper inorganic layer is less than a spin density of the first lower inorganic layer. 11 . The display device of claim 10 , wherein the spin density of the first upper inorganic layer is less than about 9.0×10 18 spins/cm 3 , and wherein the spin density of the first lower inorganic layer is about 9.0×10 18 spins/cm 3 or more. 12 . The display device of claim 7 , wherein a difference between a refractive index of the first upper inorganic layer and a refractive index of the first lower inorganic layer is less than about 0.05.
Assignees
Inventors
Classifications
multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title
Active-matrix OLED [AMOLED] displays · CPC title
- H10K50/844Primary
Encapsulations · CPC title
- H10K71/00Primary
Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title
in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements · CPC title
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Frequently asked questions
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- What does patent US2024306421A1 cover?
- A display device includes a light emitting structure disposed on a substrate, and a thin film encapsulation layer disposed on the light emitting structure and including an inorganic layer containing silicon oxynitride and an organic layer. A portion of the inorganic layer has a stress intensity factor of about 1.6 MPa or more.
- Who is the assignee on this patent?
- Samsung Display Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H10K50/844. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 12 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).