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:
Jun. 14, 2005
Filed:
Dec. 17, 2002
Young Woo Song, Suwon, KR;
Hitoshi Yamamoto, Seongnam, KR;
Takeo Wakimoto, Ulsan, KR;
Chang Hee Ko, Seoul, KR;
Young Woo Song, Suwon, KR;
Hitoshi Yamamoto, Seongnam, KR;
Takeo Wakimoto, Ulsan, KR;
Chang Hee Ko, Seoul, KR;
Samsung SDI Co., Ltd., Suwon-si, KR;
Abstract
An organic electroluminescent display (EL) device including a substrate, a transparent electrode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode, sequentially stacked, wherein assuming that the sum of a geometric thickness of the electron transport layer, a geometric thickness of the light emitting layer is denoted by l, the lwith a maximum of luminance is denoted by a peak_l, the sum of a geometric thickness of the hole transport layer and a geometric thickness of the transparent electrode is denoted by l, the geometric thickness of the hole transport layer is denoted by d(HTL), the d(HTL) with a maximum or minimum of luminance is denoted by a peak_d(HTL), the lis set to have an maximum of luminance and lis set such that a thickness distribution according to colors of red, green and blue at the peak_lis within the range of 30 nm, respectively.