Appeal No. 2002-0429
Application No. 08/847,138
an anode comprising a second conducting layer, wherein said
anode is transparent to light generated by said electroluminescent
layer; and
a hole transport layer, said hole transport layer being
sandwiched between said electroluminescent layer and said anode,
said hole transport layer comprising a hole transport compound
having an energy band intermediate between that of said anode and
that of said electroluminescent layer,
wherein said anode comprises first and second anode layers,
said first anode layer comprising indium tin oxide and said second
anode layer comprising a material that bonds to indium tin oxide
and to said hole transport layer better than said hole transport
compound binds to indium tin oxide and which has an energy band
intermediate between that of indium tin oxide and said hole
transport, layer, said second anode layer being sandwiched between
said hole transport layer and said first anode layer.
31. The OLED of claim 30 wherein said second anode layer
comprises
.
32. The OLED of claim 30 wherein said second anode layer
comprises
.
2
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