Patent ID: 8492222
Filing Date: 2013-07-23
Classification: H01L

Abstract:
1. A method for forming a pixel of an electroluminescence device, comprising: providing a substrate; defining at least a first area for capacitors, a second area for a transistor on the substrate and a third area for an organic light-emitting diode (OLED) on the substrate; forming a first conductive layer over the first area; forming a first dielectric layer over the first conductive layer over the first area; forming a second conductive layer over the first dielectric layer over the first area; forming a second dielectric layer over the second conductive layer over the first area; forming a third conductive layer over the second dielectric layer over the first area; forming a semiconductor layer over the second area; forming a gate oxide layer over the second area and over the first conductive layer over the first area, wherein forming the first dielectric layer comprises forming an interlayer dielectric over the gate oxide; and forming a fourth conductive layer over the gate oxide layer over the second area; forming a fifth conductive layer over the third area; forming an organic layer over the fifth conductive layer over the third area, wherein forming the second dielectric layer comprises forming the organic layer over the second conductive layer, wherein the third conductive layer is over the organic layer over the third area; wherein the first conductive layer over the first area is directly connected to a power supply voltage, wherein the second conductive layer is electrically connected to the fourth conductive layer and wherein the first conductive layer, the first dielectric layer, and the second conductive layer over the first area collectively form a first one of the capacitors over the first area, the second conductive layer, the second dielectric layer, and the third conductive layer over the first area collectively form a second one of the capacitors over the first area, and the semiconductor layer, the gate oxide layer, and the fourth conductive layer over the second area collectively form a transistor, and wherein forming the first conductive layer and forming the semiconductor layer comprise forming the first conductive layer and the semiconductor layer using the same semiconductor material which is provided as doped polysilicon, and wherein the fifth conductive layer, the organic layer, and the third conductive layer over the third area collectively form the OLED.