Flexible display substrate and flexible display
US-2016020226-A1 · Jan 21, 2016 · US
Organic el display device and method for producing organic el display device
US10388904B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10388904-B2 |
| Application number | US-201515524381-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 4, 2015 |
| Priority date | Nov 7, 2014 |
| Publication date | Aug 20, 2019 |
| Grant date | Aug 20, 2019 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is an organic EL display device that includes: a substrate; a first electrode provided on the substrate; an organic EL layer provided on the first electrode; a second electrode provided on the organic EL layer; and a sealing film layer provided so as to cover the second electrode. The sealing film layer has protruding portions and recessed portions.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing an organic electro-luminescence display device, the method comprising the steps of: forming a first electrode on a substrate; forming an organic electro-luminescence layer on the first electrode; forming a second electrode on the organic electro-luminescence layer; and forming a sealing film layer having protruding portions and recessed portions that have a finer density than a subpixel pitch so that the sealing film layer covers the second electrode, wherein, in the step of forming the sealing film layer having protruding portions and recessed portions, a sealing film layer having a single layer structure is formed by using a mask that has full-open apertures that completely pass through the mask, and half-open apertures at which thickness of the mask is decreased. 2. The method for producing an organic electro-luminescence display device according to claim 1 , further comprising providing a flexible substrate covering the sealing film layer. 3. The method for producing an organic electro-luminescence display device according to claim 1 , wherein, in the step of forming the sealing film layer, the sealing film layer is formed by using a mask in which the full-open apertures are arranged in a lattice pattern and the half-open apertures are arranged in areas surrounded by the full-open apertures in the lattice pattern. 4. The method for producing an organic electro-luminescence display device according to claim 3 , wherein the lattice pattern is a diagonal lattice pattern. 5. The method for producing an organic electro-luminescence display device according to claim 1 , wherein the sealing film layer is formed in such a shape that the protruding portions and the recessed portions are arrayed alternately by using a mask in which the full-open apertures and the half-open apertures are arranged alternately in one direction. 6. The method for producing an organic electro-luminescence display device according to claim 1 , wherein, in the step of forming the sealing film layer having protruding portions and recessed portions, the sealing film layer is formed so that a height from a bottom of the recessed portions to a top of the protruding portions is in a range of 100 nm to 5000 nm.
Assignees
Inventors
Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10388904B2 cover?
- Provided is an organic EL display device that includes: a substrate; a first electrode provided on the substrate; an organic EL layer provided on the first electrode; a second electrode provided on the organic EL layer; and a sealing film layer provided so as to cover the second electrode. The sealing film layer has protruding portions and recessed portions.
- Who is the assignee on this patent?
- Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification H01L51/5218. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 20 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).