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:
Apr. 24, 2001
Filed:
Jan. 21, 1999
TDK Corporation, Tokyo, JP;
Abstract
An organic EL device has a hole injecting electrode, an electron injecting electrode, an organic layer between the electrodes, and an inorganic insulating hole injecting layer between the hole injecting electrode and the organic layer. The inorganic insulating hole injecting layer contains silicon oxide or germanium oxide or a mixture thereof as a main component, and the main component is represented by (Si,Ge,)O,wherein 0≦x≦1 and 1.7≦y≦2.2. The hole injecting layer further contains Cu, Fe, Ni, Ru, Sn, Au or a mixture thereof, The device has advantages including a long lifetime, improved efficiency, low operating voltage, and low cost, and is suited for use as high-performance flat-panel color displays.