Patent ID: 11222593

Abstract:
A top-emitting AMOLED panel includes a pixel circuit for each of multiple pixels. The circuit includes a first TFT connected to first, second, and third nodes; a second TFT connected to a scan signal, the first node and a data signal; a third TFT connected to the scan signal, the second node, and a reference voltage; a fourth TFT connected to the scan signal, the third node, and a high voltage power source; a first capacitor connected to the first node and the second node; a second capacitor connected to the third node and the reference voltage; and an OLED connected to the second node and a low voltage power source. The voltages supplied from the high voltage power source and the low voltage power source to the pixel are variable as functions of the location of the pixel on the panel, such that a voltage difference therebetween keeps unchanged.