Abstract: A subpixel circuit of a display device comprises a driving transistor, a first transistor controlled by the scanning signal and electrically connected to gate and drain nodes of the driving transistor; a second transistor controlled by the scanning signal and electrically connected to a source node of the driving transistor and the data line; a third transistor controlled by the emission control signal and electrically connected to a high potential voltage supply line and the source node of the driving transistor; a fourth transistor controlled by the emission control signal and electrically connected to the drain node of the driving transistor and the light-emitting element; and a fifth transistor controlled by the scanning signal and electrically connected to an initializing voltage supply line and the light-emitting element. The number of signal lines are reduced by forming a scanning signal line and an emission control signal line into an integrated structure.

Abstract: The present invention provides an organic light emitting diode (OLED) display apparatus displaying a grayscale of one frame with N number of subfields. The OLED display apparatus includes a display panel where pixels are defined by an intersection of data lines and gate lines, a gate driving unit that provides a scan signal to the gate line, and a data driving unit that controls a data voltage in an analog manner. Here, the data voltage is provided to the data line in at least one subfield.

Abstract: Provided is an organic light emitting display including a display panel, a data driver supplying a data signal to the display panel, a timing controller controlling the data driver, a power source supply unit converting an external voltage and outputting a high potential voltage and a low potential voltage through a first power source line and a second power source line, a measurement unit measuring a current or a voltage flowing through the first power source line and the second power source line and outputting a measured value, and a compensation coefficient calculator matching the measured value and a reference value stored in the compensation coefficient calculator to a driving signal and comparing the measured value and the reference value to judge a degree of noise and calculating a compensation coefficient.

Abstract: The present invention provides an organic light emitting diode (OLED) display apparatus displaying a grayscale of one frame with N number of subfields. The OLED display apparatus includes a display panel where pixels are defined by an intersection of data lines and gate lines, a gate driving unit that provides a scan signal to the gate line, and a data driving unit that controls a data voltage in an analog manner. Here, the data voltage is provided to the data line in at least one subfield.

Abstract: Provided is an organic light emitting display including a display panel, a data driver supplying a data signal to the display panel, a timing controller controlling the data driver, a power source supply unit converting an external voltage and outputting a high potential voltage and a low potential voltage through a first power source line and a second power source line, a measurement unit measuring a current or a voltage flowing through the first power source line and the second power source line and outputting a measured value, and a compensation coefficient calculator matching the measured value and a reference value stored in the compensation coefficient calculator to a driving signal and comparing the measured value and the reference value to judge a degree of noise and calculating a compensation coefficient.