초록 ▼

An active matrix OED array with an improved device cathode includes a plurality of control transistors formed on a semiconductor substrate with insulating material positioned over the control transistors to form a planar surface. A plurality of contact pads are formed on the planar surface and elect

An active matrix OED array with an improved device cathode includes a plurality of control transistors formed on a semiconductor substrate with insulating material positioned over the control transistors to form a planar surface. A plurality of contact pads are formed on the planar surface and electrically coupled to the control transistors. A thin (5 .ANG. to 20 .ANG.) electron injecting layer of either alkaline metal oxide or alkaline metal fluoride is positioned on each contact pad and organic material is deposited on the electron injecting layer so as to define an organic light emitting device on each contact pad and electrical and light conducting material is positioned over the organic material to define a second terminal for the OEDs.

대표청구항 ▼

[ What is claimed is:] [1.] An active matrix organic light emitting device array with improved device cathode comprising:a substrate having an array area defined thereon;a plurality of control transistors formed on the substrate in the array area;a planarizing layer of insulating material positioned

[ What is claimed is:] [1.] An active matrix organic light emitting device array with improved device cathode comprising:a substrate having an array area defined thereon;a plurality of control transistors formed on the substrate in the array area;a planarizing layer of insulating material positioned over the plurality of control transistors in the array area and defining a substantially planar surface;a plurality of contact pads formed on the planar surface of the planarizing layer in the array area, the plurality of contact pads being electrically coupled with the plurality of control transistors;an electron injecting layer of one of alkaline metal oxide and alkaline metal fluoride positioned on each contact pad of the plurality of contact pads;a plurality of layers of organic material sequentially formed in overlying relationship on each of the electron injecting layers in the array area so as to define an organic light emitting device on each contact pad with each contact pad operating as a first terminal of an overlying organic light emitting device; andelectrical and light conducting material positioned in overlying relationship over the layers of organic material in the array area and defining a second terminal of each of the organic light emitting devices.