Thin film encapsulation structure for display apparatus
US11217772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2019 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Sep 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A display apparatus including a base layer including a display region and a non-display region; display elements on the display region and including a first electrode, a light emitting layer, and a second electrode on the light emitting layer; and an upper layer on the display elements, wherein the upper layer includes a first organic layer contacting the second electrode; a first inorganic layer contacting the first organic layer; a second organic layer contacting the first inorganic layer; and a second inorganic layer contacting the second organic layer, wherein the first inorganic layer includes a first and second area, the first area having a refractive index of about 1.60 to about 1.65 with respect to a wavelength of about 633 nm, wherein the first area has a uniform thickness, and wherein a thickness of the second area decreases as a distance from the display region increases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.