Abstract: An organic light-emitting display is provided. The organic light-emitting display has a power line divided into multiple sets with a voltage terminal attached to the center of each power line set. Furthermore, all the voltage terminals are coupled to a power supply through a low resistance conductive material medium. With this setup, brightness imbalance between neighboring pixels is minimized.

Abstract: A pixel structure of an active matrix display device includes a storage capacitor, a first active device having a first end electrically connected to a scanning line, a second end electrically connected to a data line, a third end electrically connected to the storage capacitor, and a plurality of active-type light emitting devices electrically connected in parallel with each other between a source of first potential, a source of second potential, and the third end.

Abstract: A driving circuit for an organic light emitting diode comprises the following elements. A driving transistor has a control terminal, a first electrode and a second electrode, wherein the first electrode and the second electrode are connected to a power line and the organic light emitting diode. A first switch device can be turned on by a scan signal to electrically conduct the power line and the control terminal of the driving transistor for maintaining the control terminal at the voltage level of the scan signal. And a second switch device can be turned on by the scan signal to electrically conduct a data line and the second electrode of the driving transistor for transferring the data signal to the second electrode and maintaining the second electrode at the voltage level of the data signal.

Abstract: A driving circuit for driving a display and capable of preventing charge accumulation is provided. This invention provides two additional thin film transistors to the driving circuit of each pixel of the display. If, during fabrication, positive charges accumulate at the anode of a light-emitting diode so that the anode has a potential larger than the common positive voltage line of the panel, a current will flow from one of the thin film transistors to the common positive voltage line. Conversely, if negative charges accumulate at the anode so that the anode has a potential smaller than the common negative voltage line of the panel, a current will flow from the common negative voltage line to the anode via the other thin film transistor and neutralize the negative charges. If the charges are not neutralized and allowed to accumulate on the anode of the light-emitting device, point defects may be produced.

Abstract: A driving circuit for an organic light emitting diode comprises the following elements. A driving transistor has a control terminal, a first electrode and a second electrode, wherein the first electrode and the second electrode are connected to a power line and the organic light emitting diode. A first switch device can be turned on by a scan signal to electrically conduct the power line and the control terminal of the driving transistor for maintaining the control terminal at the voltage level of the scan signal. And a second switch device can be turned on by the scan signal to electrically conduct a data line and the second electrode of the driving transistor for transferring the data signal to the second electrode and maintaining the second electrode at the voltage level of the data signal.

Abstract: A method of driving a display device. The driving method is used for driving the voltage-driven circuit of an organic light emitting diode display device. Within a frame period, data voltage is set to a negative data voltage for a pre-defined interval within a frame period. When the scanning voltage is set to a high voltage level, the negative data voltage is applied to the gate terminal of a driving thin film transistor. The gate remains at the negative gate voltage for a maintenance period and the driving thin film transistor has a constant threshold voltage. Hence, this invention provides a mechanism for maintaining a constant luminance from the organic light emitting diode despite an extended use, thereby effectively increasing the working life of the display device.

Abstract: A driving circuit of a display which has a plurality of pixels. Each pixel has a first transistor, a second transistor, a third transistor, a fourth transistor, a capacitor and a light-emitting device. Driving the pixels with current is achieved by n-type amorphous silicon thin film, while the low-temperature polycrystalline silicon thin-film transistor is not required. Further, by adjusting the ratio of channel width to channel length of the thin-film transistors of the pixels, the different effects caused by characteristics of red, green and blue pixels are compensated without the need of providing different data current by the driving integrated circuit.

Abstract: A method is disclosed for avoiding oxidation of a bonding pad served as an electrical connection to devices mounted on a transparent insulating substrate of a thin-film transistor applied to an organic light emitting diode (OLED). Firstly, the bonding pads are defined on the transparent insulating substrate. Then, an ITO defending layer and an indium tin oxide (ITO) anode are defined simultaneously on the bonding pads and partial of the transparent insulating substrate surface, respectively. The ITO defending layer described above is provided to prevent the bonding pad from being oxidized. The oxidation upon the bonding pad is reduced, so that the conductivity thereof can be ensured.

Abstract: A method for testing the ability of an iontophoretic reservoir-electrode to deliver a medicament includes providing an iontophoretic reservoir-electrode with a contact surface having a shape, a suitable electrical connection and a hydrated bibulous reservoir containing an ionized medicament. The method further includes providing another electrode operating a at preselected polarity opposite to the preselected polarity of the medicament reservoir-electrode. The method further includes providing a separation medium having the property of allowing passage therein to of ions of one charge. The separation medium is positioned between the reservoir electrode with the ionized medicament and the another electrode.