Title:
DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/162485
Kind Code:
A1
Abstract:
Provided is a display device having both high display quality and high definition. This display device comprises a light-emitting element and a connection part. The connection part is provided along the outer periphery of a display region in which the light-emitting element is provided. The light-emitting element has a pixel electrode, a first EL layer on the pixel electrode, a second EL layer on the first EL layer, and a common electrode on the second EL layer. The connection part has a connection electrode, the second EL layer on the connection electrode, and the common electrode on the second EL layer. The second EL layer has a first region that abuts on the connection electrode, and a second region that abuts on the common electrode. The area of a region where the first region and the second region overlap each other when viewed from above is 40000 square micrometers or more. The second EL layer has a region with a film thickness of 0.5-15 nm. The second EL layer contains a substance having a high electron injection property.
Inventors:
NAKAMURA DAIKI (JP)
KATO SHO (JP)
OKAZAKI KENICHI (JP)
YAMAZAKI SHUNPEI (JP)
KATO SHO (JP)
OKAZAKI KENICHI (JP)
YAMAZAKI SHUNPEI (JP)
Application Number:
PCT/IB2022/050282
Publication Date:
August 04, 2022
Filing Date:
January 14, 2022
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
G09F9/30; H01L27/32; H01L51/50; H05B33/06
Foreign References:
| US20090261713A1 | 2009-10-22 | |||
| US20120007497A1 | 2012-01-12 | |||
| US20050140279A1 | 2005-06-30 | |||
| JP2006318910A | 2006-11-24 |
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