Patent ID: 6111270
Filing Date: 2000-08-29
Classification: H01L

Abstract:
Light emitting apparatus comprising:a thin film transistor including a semiconductive layer having spaced apart first and second doped regions defining first and second current carrying terminals with a channel therebetween, an insulating layer overlying the channel and a control terminal formed on the insulating layer, and a portion of the control terminal overlying a portion of the first doped region;a capacitor defined by the overlying portions of the control terminal and the first doped region; andan organic electroluminescent device having a first terminal connected to the second current carrying terminal; anda microcavity structure in cooperation with the organic electroluminescent device defining an optical length of the microcavity structure, including a transparent spacer positioned adjacent the organic electroluiminescent device and a plurality of layers of dielectric material having different indexes of refraction such that the plurality of layers operates as a mirror stack, the plurality of layers being positioned on the transparent spacer so as to reflect light toward the organic electroluminescent device and to cooperate with the transparent spacer and the organic electroluminescent device to define an optical length of the microcavity.