ORGANIC ELECTROLUMINESCENT DEVICE COMPENSATED PIXEL DRIVER CIRCUIT

摘要

A compensated pixel driver circuit comprises a p-channel transistor and an n-channel transistor connected as a complementary pair of transistors to provide analog control of the drive current for an organic electroluminescent device (OELD). The transistors, being of opposite channel, compensate for any variation in threshold voltage DELTA VT and therefore provide a drive current to the OELD which is relatively independent of DELTA VT. The complementary pair of transistors can be applied to either voltage driving or current driving pixel driver circuits.