Abstract: An electroluminescence display device includes a first switching device for transferring a data current, which represents a data signal, using a first scan signal, a second switching device for transferring the data current from the first switching device using a second scan signal, a storage device for storing a charge voltage according to the data current transferred from the second switching device, a coupling unit for changing the charge voltage stored in the storage device in accordance with the first scan signal into a changed voltage, driving devices for generating a driving current in accordance with the changed voltage, and an organic light emitting diode for emitting light in accordance with the driving current.

Abstract: A pixel circuit includes a first transistor transmitting a reference signal or a data signal in response to a selection signal applied through a scan line, second and third transistors inputting a reference current in response to a control signal applied through a control line, a first capacitor storing a voltage compensated by the input reference current to compensate for the data signal received from the first transistor, a second capacitor storing the compensated data signal by the first capacitor, a fourth transistor receiving the compensated data signal to generate a driving current, a fifth transistor transmitting the driving current in response to the control signal applied through the control line, and an organic light emitting diode receiving the driving current from the fifth transistor to emit light.

Abstract: An organic light emitting diode display device and the driving method thereof that is adaptive for increasing display quality. The organic light emitting diode display device according to an embodiment includes a display panel where pixels having an organic light emitting diode device are arranged in a matrix type and a data driver that supplies a data voltage and an inverted voltage to the pixels, where the inverted voltage is symmetric to the data voltage relative to a reference voltage.

Abstract: A pixel circuit of an organic light emitting display includes a first transistor that transmits a data signal from a data line in response to a scan signal from a scan line; a first capacitor that stores the data signal received from the first transistor; a second transistor for threshold voltage compensation; a third transistor that transmits the threshold voltage of the second transistor; a fourth transistor that connects the gate and drain of the second transistor in a diode-connected configuration in response to a control signal from a control line; a second capacitor that stores the threshold voltage received through the third transistor; a fifth transistor that generates a driving current corresponding to a combined voltage of the first and the second capacitors due to the turned on third transistor; and an organic light emitting diode that emits light according to the driving current.

Abstract: The pixel circuit of an organic light emitting display includes a first transistor to a seventh transistor, a first capacitor, a second transistor and an organic light emitting diode. The first capacitor stores the data signal from the first, second and third transistors, and the second capacitor stores the threshold voltage of the fourth transistor from the fifth transistor. Voltages stored in the first and second capacitors are combined by the sixth transistor, and the fourth transistor generates a driving current corresponding to a combined voltage of the voltages stored in the first and second capacitor. The seventh transistor transmits the driving current and the organic light emitting diode emits light corresponding to the driving current.

Abstract: A thin film transistor includes a semiconductor pattern disposed on a substrate and a semiconductor pattern portion with a conductive or nonconductive characteristic, and a anti-diffusion portion on a side of the semiconductor pattern portion to prevent metal ions from being diffused along the semiconductor pattern portion. A first insulating layer covers the semiconductor pattern and has a first contact hole exposing a first region of the semiconductor pattern portion and a second contact hole exposing a second region of the semiconductor pattern portion. A gate electrode is disposed on the first insulating layer. A second insulating layer covers the gate electrode and has a third contact hole exposing the first region and a fourth contact hole exposing the second region. A source electrode is formed on the second insulating layer and connected to the first region, and a drain electrode is formed on the second insulating layer and connected to the second region.

Abstract: An electroluminescence display device includes a first switching device for transferring a data current, which represents a data signal, using a first scan signal, a second switching device for transferring the data current from the first switching device using a second scan signal, a storage device for storing a charge voltage according to the data current transferred from the second switching device, a coupling unit for changing the charge voltage stored in the storage device in accordance with the first scan signal into a changed voltage, driving devices for generating a driving current in accordance with the changed voltage, and an organic light emitting diode for emitting light in accordance with the driving current.

Abstract: A visual enhancement kit for use in combination with a nail clipper featuring a lens that may be dismounted and interchanged with any of a plurality of lenses of varying refractive qualities. The resulting field of view of the cutting edge of the clipper and the area adjacent thereto enhances the user's ability to see the work being done by the clipper. vice as claimed in claim 1 additionally comprising a means to vary the distance between said lens and cutting blades. The device may be attached to a conventional nail clipper already in use and features rotational positioning of the lens in relation to the user. The device may also be provided already attached to a nail clipper and optionally features the ability to vary the distance between the lens and the cutting edge of the clipper which is user adjustable. Using hinged connections the lens may be folded for storage in a storage compartment formed from components of the device. The device is further enhanced by an optional light source.