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:
Mar. 27, 2001
Filed:
Jan. 13, 1999
TDK Corporation, Tokyo, JP;
Abstract
The invention provides an organic EL device comprising a hole injecting electrode, a negative electrode, at least one organic layer between the electrodes, the organic layer including a light emitting layer having a light emitting function, and a hole injecting and transporting layer containing a hole transporting organic material and an inorganic insulative hole injecting and transporting layer formed of an inorganic material between the hole injecting electrode and the light emitting layer. The inorganic insulative hole injecting and transporting layer contains silicon oxide and/or germanium oxide as a main component, the main component having an average composition represented by the formula: (Si,Ge,)O,wherein 0≦x≦1 and 1<y≦2. This construction enables an organic EL device having better performance than prior art devices having hole injecting and transporting layers using organic materials, a long life, weather resistance, high stability, high efficiency, and low cost.