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. 19, 2017
Filed:
Sep. 16, 2014
Samsung Display Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Hee-Seong Jeong, Seoul, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic light emitting display device includes a substrate, a first pixel configured emit light having a first color, and a second pixel configured to emit light having a second color different from the first color. Each of the first and second pixels comprises a first electrode formed over the substrate, a light emission layer formed over the first electrode, an electron transport layer formed over the light emission layer, and a second electrode formed over the electron transport layer. The electron transport layer comprises a first electron transport material and a second electron transport material different from the first electron transport material. A ratio by weight of the first electron transport material to the second electron transport material in the first pixel is substantially different from that of the first electron transport material to the second electron transport material in the second pixel.