Patent ID: 7768485

Claim:
A display apparatus comprising: a pixel array having scanning lines as rows, signal lines as columns, a matrix of pixels disposed at respective intersections of said scanning lines and said signal lines, and power supply lines, a power supply scanner for supplying a first potential and a second potential to said power supply lines, at least one of said pixels including a light-emitting device, a sampling transistor, a drive transistor, and a retention capacitor, said sampling transistor having a gate, a source, and a drain, said gate being connected to one of said scanning lines, either one of said source and said drain being connected to one of said signal lines, and the other being connected to a gate of said drive transistor, said drive transistor having said gate, a source and a drain, said source being connected to said light-emitting device and said drain being connected to one of said power supply lines, said retention capacitor being connected between said source and said gate of said drive transistor, wherein drive current flows from said drain of said drive transistor connected to said power supply line to said source of said drive transistor connected to said light-emitting device, said drive current flow occurring while said signal line is at a signal potential and said sampling transistor is rendered conductive, to cause an increase in the potential of said source of said drive transistor.