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:
Jan. 15, 2002
Filed:
Oct. 19, 1998
TDK Corporation, Tokyo, JP;
Abstract
An organic EL device has a hole injecting electrode, an electron injecting electrode, at least one organic layer between the electrodes, and an inorganic insulating hole injecting and transporting layer between the hole injecting electrode and the organic layer. The inorganic insulating hole injecting and transporting layer contains silicon oxide and/or germanium oxide as a main component, the main component being represented by (Si Ge )O wherein 0≦x≦1 and 1.8≦y≦2.5, and further contains 0.01 to 2% by weight of at least one element selected from among Ar, Kr, Xe, and Ne. The device has the advantages of both organic and inorganic materials, a long lifetime, improved efficiency, low operating voltage, and low cost, and can provide a high luminance of light emission when applied to displays of the time-division driving mode, and realize large screen, high definition displays.