Organic EL display device and method of manufacturing the same

US8283854B2 · kind B2 · utility

Assignee

• Japan Display Central Inc. · JP

Inventors

• Shuhei Yokoyama · Tokyo, JP
• Masuyuki Oota · Mobara, JP
• Satoshi Okutani · Ishikawa, JP
• Takanobu TAKENAKA · Sakai, JP

Key dates

• Filing date: Dec 23, 2010
• Grant date: Oct 9, 2012
• Expiry date: Dec 23, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/10

Abstract

An organic EL display device includes a first light emission layer which includes a first dopant material having a first absorbance peak in absorbance spectrum characteristics and a first host material having a first absorbance bottom on a shorter wavelength side than the first absorbance peak, the first light emission layer extending over the first to third organic EL elements and being disposed above pixel electrodes of the first to third organic EL elements, and a second light emission layer which includes a second dopant material having a second absorbance peak in absorbance spectrum characteristics and a second host material having a second absorbance bottom on a shorter wavelength side than the first absorbance peak and than the second absorbance peak, the second light emission layer extending over the first to third organic EL elements and being disposed above the first light emission layer.