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:
Sep. 07, 1999
Filed:
Aug. 27, 1996
Homer Antoniadis, Mountain View, CA (US);
Daniel B Roitman, Menlo Park, CA (US);
William R Shiang, Sanford, MI (US);
Edmund P Woo, Midland, MI (US);
Weishi Wu, Midland, MI (US);
Hewlett-Packard Company, Palo Alto, CA (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
An organic electroluminescent device that comprises a substrate, a first conductive layer on the substrate, an electron-transporting and light-emitting layer, a second conductive layer adjacent the electron-transporting and light-emitting layer and remote from the first conductive layer, and a hole-conducting layer sandwiched between the first conductive layer and the electron-transporting and light-emitting layer. The hole-conducting layer comprises a poly(arylamine) including at least one compound of formula (I): ##STR1## In this: R is independently in each occurrence a C.sub.1-24 hydrocarbyl, hydrocarboxyl, hydrothiocarboxy, hydroarylcarboxy, or hydrothioarylcarboxy; Ar.sub.1 and Ar.sub.2 are independently in each occurrence a C.sub.6-18 aryl moiety optionally substituted with one or more C.sub.1-24 hydrocarbyl, hydrocarboxyl, hydrothiocarboxy, hydroarycarboxy, or hydrothioarylcarboxy; A is independently in each occurrence hydrogen or a halogen; x is independently in each occurrence a positive number between 0 and 1; n is a whole number from 0 to 4; and m is a number from about 5 to about 1000.