The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2012
Filed:
Feb. 17, 2009
Hiroshi Takashima, Tsukuba, JP;
Yoshiyuki Inaguma, Tsukuba, JP;
Noboru Miura, Tsukuba, JP;
Kazushige Ueda, Tsukuba, JP;
Mitsuru Itoh, Tsukuba, JP;
Hiroshi Takashima, Tsukuba, JP;
Yoshiyuki Inaguma, Tsukuba, JP;
Noboru Miura, Tsukuba, JP;
Kazushige Ueda, Tsukuba, JP;
Mitsuru Itoh, Tsukuba, JP;
Abstract
There are provided a perovskite oxide thin film EL element in which a hole transport layer/a light-emitting layer/an electron transport layer comprising a perovskite oxide thin film are formed on a lower electrode, and an upper electrode is formed thereon, and a perovskite oxide thin film EL element that provides red light emission in the vicinity of a wavelength of 610 nm, which is the basis of display making. A perovskite oxide thin film EL element comprising a lower electrodecomprising a polished single crystal substrate, an electron transport layercomprising a perovskite oxide thin film, which is a dielectric, formed on the lower electrode, a light-emitting layercomprising a perovskite oxide thin film formed on the electron transport layer, a hole transport layercomprising a perovskite oxide thin film, which is a dielectric, formed on the light-emitting layer, a buffer layerformed on the hole transport layer, and a transparent upper electrodeformed on the buffer layer