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. 10, 2012
Filed:
Jun. 03, 2009
Hyuk-sang Jun, Yongin, KR;
Ok-keun Song, Yongin, KR;
Hye-in Jeong, Yongin, KR;
Young-mo Koo, Yongin, KR;
Hyuk-Sang Jun, Yongin, KR;
Ok-Keun Song, Yongin, KR;
Hye-In Jeong, Yongin, KR;
Young-Mo Koo, Yongin, KR;
Samsung Mobile Display Co., Ltd., Giheung-Gu, Yongin, Gyunggi-Do, KR;
Abstract
Provided is an organic light emitting diode display device which can improve brightness and color coordinate characteristics in all emission wavelength ranges, and thus can enhance light extraction efficiency and color reproducibility. The organic light emitting diode display device includes a substrate, a first electrode disposed on the substrate, an organic layer disposed on the first electrode and having an emission layer, a second electrode disposed on the organic layer, and first and second refraction layers. A stack of the first and second refraction layers is disposed either between the first electrode and the substrate or on the second electrode. A refractive index of the first refraction layer is smaller than a refractive index of the second refraction layer. A thickness of the first refraction layer is no greater than 100 nm.