Patent ID: 8564513
Filing Date: 2013-10-22
Classification: G09G

Abstract:
1. A display system, comprising: one or more than one pixel circuit, each including a light emitting device and a drive circuit, the drive circuit including: a drive transistor including a gate terminal, a first terminal and a second terminal, the drive transistor being between the light emitting device and a first power supply; a switch transistor including a gate terminal, a first terminal and a second terminal, the gate terminal of the switch transistor being connected to a first address line, the first terminal of the switch transistor being connected to a data line, the second terminal of the switch transistor being directly connected to the gate terminal of the drive transistor; a circuit for adjusting the gate voltage of the drive transistor, the circuit including a sensor for sensing energy transfer from the pixel circuit and a discharging transistor connected in series with the sensor, the sensor having a first terminal and a second terminal, a conductance property of the sensor varying in dependence upon the sensing result, the discharging transistor having a gate terminal, a first terminal and a second terminal, the gate terminal of the discharging transistor being connected to a second address line, the first terminal of the discharging transistor being connected to the gate terminal of the drive transistor at a node, the second terminal of the discharging transistor being connected to the first terminal of the sensor; and a storage capacitor including a first terminal and a second terminal, the first terminal of the storage capacitor being connected to the gate terminal of the drive transistor at the node, wherein the second terminal of the sensor is connected to a power supply or to the drive transistor; and a driver configured to provide a programming cycle, followed by a compensation cycle, and a driving cycle following the compensation cycle for each row in the display array, such that: