Abstract:
A pixel circuit for an organic light emitting diode (OLED) display is disclosed. One inventive aspect includes an organic light emitting diode, a first transistor, a storage unit, a second transistor and a third transistor. The first transistor controls the amount of current flowing from a first power source coupled to a second power source via a second node and the organic light emitting diode in response to a voltage at a first node. The storage unit is connected to a data line, and stores a data signal from the data line. The second transistor is connected to a fourth node and the first node and is turned on when a second control signal is supplied. The third transistor is connected to the first node and a third node and is turned on when a third control signal is supplied.
Abstract:
A thin film transistor array substrate includes: a substrate; a bottom gate electrode including a gate area doped with ion impurities and undoped areas on left and right sides of the gate area; an active layer on the bottom gate electrode with a first insulating layer therebetween and including a source contact region, a drain contact region, and an oxide semiconductor region; a top gate electrode on the active layer with a second insulating layer therebetween; and a source electrode in contact with the source contact region and a drain electrode in contact with the drain contact region, the source electrode and the drain electrode being on the top gate electrode with a third insulating layer therebetween. The oxide semiconductor region is between the source contact region and the drain contact region.
Abstract:
A thin film transistor includes a substrate, a gate electrode on the substrate, an active layer spaced from the gate electrode, a source electrode and a drain electrode spaced from the gate electrode and coupled to the active layer, a gate wiring at a same layer as the gate electrode and coupled to the gate electrode, and first conductive members electrically coupled to, and overlapping, the gate wiring.
Abstract:
Provided is a thin film transistor including an active layer including a first silicon active layer, a second silicon active layer, and an oxide active layer in a space between the first silicon active layer and the second silicon active layer, a gate electrode on the active layer with a gate insulating layer disposed therebetween, and a source electrode and a drain electrode with an interlayer insulating layer disposed between the gate electrode and the source and drain electrodes, the source and drain electrodes being in contact with the first silicon active layer and the second silicon active layer, respectively.
Abstract:
A thin film transistor includes a substrate, a semiconductor layer on the substrate, a first insulating layer covering the substrate and the semiconductor layer, a first gate electrode on the first insulating layer and overlapping the semiconductor layer, a second insulating layer covering the first gate electrode and the first insulating layer, a second gate electrode on the second insulating layer and overlapping the semiconductor layer and the first gate electrode, a third insulating layer covering the second gate electrode, a first contact hole defined in the first insulating layer, the second insulating layer and the third insulating layer, and through which a portion of the semiconductor layer is exposed, and a source electrode and a drain electrode connected to the semiconductor layer through the first contact hole.
Abstract:
A thin film transistor includes a substrate, a semiconductor layer on the substrate, a first insulating layer covering the substrate and the semiconductor layer, a first gate electrode on the first insulating layer and overlapping the semiconductor layer, a second insulating layer covering the first gate electrode and the first insulating layer, a second gate electrode on the second insulating layer and overlapping the semiconductor layer and the first gate electrode, a third insulating layer covering the second gate electrode, a first contact hole defined in the first insulating layer, the second insulating layer and the third insulating layer, and through which a portion of the semiconductor layer is exposed, and a source electrode and a drain electrode connected to the semiconductor layer through the first contact hole.
Abstract:
Provided is a thin film transistor including an active layer including a first silicon active layer, a second silicon active layer, and an oxide active layer in a space between the first silicon active layer and the second silicon active layer, a gate electrode on the active layer with a gate insulating layer disposed therebetween, and a source electrode and a drain electrode with an interlayer insulating layer disposed between the gate electrode and the source and drain electrodes, the source and drain electrodes being in contact with the first silicon active layer and the second silicon active layer, respectively.
Abstract:
A pixel includes an organic light emitting diode (OLED) having a cathode electrode coupled to a second power supply, a pixel circuit configured to control an amount of current supplied to the OLED to correspond to a previous data signal, and a driver configured to store a present data signal supplied from a data line and to supply the previous data signal to the pixel circuit. The OLED, pixel circuit, and driver may be controlled by signals in a frame that includes first through fourth periods, the second power supply may be set to a first voltage in the first and second periods and to a second voltage in the third and fourth periods, and the first voltage may be a voltage at which the OLED does not emit light and the second voltage may be a voltage at which the OLED emits light.
Abstract:
A thin film transistor is disclosed. In one aspect, the thin film transistor includes a substrate, a semiconductor layer formed on the substrate, and a first gate electrode substantially overlapping the semiconductor layer with a gate insulating layer interposed therebetween. The thin film transistor also includes a second gate electrode substantially overlapping the first gate electrode with an interlayer insulating layer interposed therebetween, and a source electrode and a drain electrode electrically connected to the semiconductor layer, wherein the first gate electrode is electrically connected to the second gate electrode.
Abstract:
A pixel circuit for an organic light emitting diode (OLED) display is disclosed. One inventive aspect includes an organic light emitting diode, a first transistor, a storage unit, a second transistor and a third transistor. The first transistor controls the amount of current flowing from a first power source coupled to a second power source via a second node and the organic light emitting diode in response to a voltage at a first node. The storage unit is connected to a data line, and stores a data signal from the data line. The second transistor is connected to a fourth node and the first node and is turned on when a second control signal is supplied. The third transistor is connected to the first node and a third node and is turned on when a third control signal is supplied.