ORGANIC ELECTROLUMINSESCENCE ELEMENT AND LIGHTING

专利名称：ORGANIC ELECTROLUMINSESCENCE

ELEMENT AND LIGHTING DEVICE

发明人：Varutt Kittichungchit,Kazuyuki Yamae申请号：US14403681申请日：20130530

公开号：US20150171360A1公开日：20150618

专利附图：

摘要：The disclosure relates to an organic electroluminescence element including anorganic layer including multiple light-emitting layers. The light-emitting layers include ablue light-emitting layer including a blue light-emitting dopant. In a case where emission

color of the organic electroluminescence element operated at an operation temperaturefor a stable state is represented in a CIE1931 chromaticity coordinate system, whencoordinate point A of the emission color at an early stage of use and coordinate point Bof the emission color deteriorated by use are represented by (x, y) and (x, y) respectively,a relation of y≧yis satisfied. When amounts of changes in x and y values from coordinatepoint A to coordinate point B are represented by equations of Δx=x−Xand

Δy=y−yrespectively, a relation of Δy≧Δx is satisfied. It can be made difficult to perceivechange in emission color and lifetime can be prolonged

申请人：PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

地址：Osaka JP

国籍：JP

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