Patent ID: 6633122
Filing Date: 2003-10-14
Classification: H01L,Y10S

Abstract:
An electroluminescence device comprising:at least three kinds of laminated bodies having a common hole transfer layer and a common electron transfer layer, each of the at least three kinds of laminated bodies having an emission region that is independently present in each of the common hole transfer layer and the common electron transfer layer, said emission region comprising an organic compound, said at least three kinds of laminated bodies each comprising an organic substance containing said emission region, and said at least three kinds of laminated bodies comprising: a blue-light emitting laminated body comprising a hole block layer for causing recombination of an electron and a hole in a hole transfer organic material of the common hole transfer layer of said blue-light emitting laminated body, wherein blue-light emission is obtained by said recombination, said blue-light emitting laminated body not comprising a red emission layer; a red-light emitting laminated body comprising a red-light emission layer for causing recombination of an electron and a hole in the red-light emission layer, wherein red-light emission is obtained by said recombination, said red-light emitting laminated body not comprising a hole block layer; and a green-light emitting laminated body wherein green emission is obtained by recombination of an electron and a hole in an electron transfer organic material of the common electron transfer layer of said green-light emitting laminated body, said green-light emitting laminated body not comprising a hole block layer or a red-light emission layer, and wherein said electroluminescence device emits at least three colors of light.