Patent ID: 7978161

Claim:
An organic light emitting diode display, comprising: a panel where a plurality of R, G, and B organic light emitting diode devices are arranged; a driving voltage source that generates a driving voltage; R, G, and B organic light emitting diode devices that emit light by a current from the driving voltage source; a driving current stabilizing circuit that compares the driving voltage supplied to the R organic light emitting diode device with a first reference voltage to control a current flowing into the R organic light emitting diode device, compares the driving voltage supplied to the G organic light emitting diode device with a second reference voltage to control a current flowing into the G organic light emitting diode device, and compares the driving voltage supplied to the B organic light emitting diode device with a third reference voltage to control a current flowing into the B organic light emitting diode device; and a temperature sensing circuit that senses a temperature of the panel to generate a temperature sensing signal as an analog voltage value, wherein the driving current stabilizing circuit comprises a first, a second and a third driving current controller, wherein the first driving current controller includes a first comparator having a non-inversed input terminal for receiving the first reference voltage and an inversed input terminal for receiving the driving voltage, and a first current control device having a base connected to an output terminal of the first comparator, an emitter connected to the driving voltage source, and a collector connected to the R organic light emitting diode device, wherein the second driving current controller includes a second comparator having a non-inversed input terminal for receiving the second reference voltage and an inversed input terminal for receiving the driving voltage, and a second current control device having a base connected to an output terminal of the second comparator, an emitter connected to the driving voltage source, and a collector connected to the G organic light emitting diode device, wherein the third driving current controller includes a third comparator having a non-inversed input terminal for receiving the third reference voltage and an inversed input terminal for receiving the driving voltage, and a third current control device having a base connected to an output terminal of the third comparator, an emitter connected to the driving voltage source, and a collector connected to the B organic light emitting diode device, and wherein the first to third reference voltages are adjusted in accordance with the temperature sensing signal directly applied to a reference voltage supplier of the driving current stabilizing circuit.