Organic electroluminescent element, lighting apparatus, and method for manufacturing organic electroluminescent element

US8841656B2 · kind B2 · utility

Assignee

• Kabushiki Kaisha Toshiba · JP

Inventors

• Tomoko Sugizaki · Kawasaki, JP
• Shintaro Enomoto · Yokohama, JP
• Akio Amano · Machida, JP
• Tomio Ono · Yokohama, JP
• Yasushi Shinjo · Kawasaki, JP
• Yukitami Mizuno · Kozushima, JP
• Keiji Sugi · Yokohama, JP
• Tomoaki Sawabe · Taito, JP
• Toshiya Yonehara · Fukuoka, JP
• Daimotsu Kato · Tokyo, JP

Key dates

• Filing date: Sep 13, 2012
• Grant date: Sep 23, 2014
• Expiry date: Apr 16, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/3031

Abstract

According to one embodiment, an organic electroluminescent element includes: a first electrode having a first and a second major surfaces; a second electrode opposed to part of the first major surface; an organic luminescent layer provided between the first and the second electrodes; an optical layer having a third major surface opposed to the second major surface and a fourth major surface on opposite side from the third major surface. The fourth major surface includes a first region overlapping the second electrode, and a second region not overlapping the second electrode. The fourth major surface includes a first concave-convex provided in the first region and a second concave-convex provided in the second region. A planarization layer is provided on the second region and burying the second concave-convex.