Abstract: A pixel of display is used in an Organic light emitted diode (OLED) display. Driving Circuit of the OLED display outputs a data current and a scanning signal. The pixel of display includes a switch circuit, a first transistor, a second transistor, a capacitor, a switch and a lighting emitting element. The switch circuit, which is controlled by the scanning signal, includes an input end for receiving the data current. When the scanning signal is enabled, a first and a second ends of the switch circuit respectively output a first and a second currents. The second current charges the capacitor. The voltage between the gate and the source of the first transistor is stored in the capacitor. When the scanning signal is disabled, the switch is turned on. The first and the second transistors respectively output currents corresponding to the cross-voltage of the capacitor to the lighting emitting element.

Abstract: A power supply device for an electronic apparatus includes a housing, a battery unit disposed in the housing, a control circuit disposed in the housing and coupled electrically to the battery unit, and a power transmission cord having an inner end coupled to the control circuit, and an outer end that extends out of the housing and that is terminated by an electrical connector to permit electrical connection with the electronic apparatus. The control circuit is operable so as to control supply of battery power from the battery unit to the electronic apparatus via the power transmission cord. A cord spool is mounted operably in the housing, and is operable for winding and unwinding the power transmission cord thereon.

Abstract: An AMOLED display has a plurality of pixel driving units of voltage-driven design but applied with a driving current. The pixel driving unit has at least a displaying OLED and a driving transistor connected to a reference unit in parallel. The reference unit has a reference OLED and a reference transistor corresponding to the displaying OLED and the driving transistor in the pixel driving unit for defining a specific relationship between the values of the driving current passing through the pixel driving unit and a reference current passing through the reference unit.

Abstract: A combined digitizer tablet and external power supply device for an electronic apparatus includes a housing, a battery unit disposed in the housing, and a sensing tablet unit disposed on the housing and that generates electrical signals in response to writing activity thereon. A control circuit is coupled electrically to the sensing tablet unit and the battery unit, and receives the electrical signals from the sensing tablet unit to generate corresponding coordinate position data. A data communications unit establishes a communications link with the electronic apparatus to transmit the coordinate position data thereto. A power output unit is coupled electrically to the control circuit, and enables electrical coupling to the electronic apparatus. The control circuit controls the supply of battery power from the battery unit to the electronic apparatus via the power output unit.

Abstract: A pixel driving circuit of an active matrix organic light emitted diode display is provided with an input first scanning voltage signal and an input displaying voltage signal. The pixel driving circuit comprises a driving thin film transistor (TFT), an organic light emitted diode (OLED), and a capacitor. The capacitor has a first end connected to a gate electrode of the driving TFT to store a potential respect to the displaying voltage signal and having the driving TFT generate a steady current flowing through the OLED. The capacitor has a second end provided with a second scanning voltage signal, which has a level range larger than that of the displaying voltage signal, partially overlapping with the first scanning voltage signal so as to generate a negative bias in the driving TFT.

Abstract: Organic light emitting diode (OLED) displays and fabrication methods thereof are provided. The OLED display comprises a substrate having a display area and a peripheral area. An array of pixels is disposed in the display area. Column and row control circuits are disposed in the peripheral area. At least one thermal dissipation element is disposed in the peripheral area connecting each pixel.

Abstract: An electroluminescence display device that comprises an array of pixels, an electroluminescence device formed in each of the pixels, a first electrode formed in the electroluminescence device, a second electrode formed in the electroluminescence device, an electroluminescence layer formed in the electroluminescence device between the first and second electrodes to emit light through the first and second electrodes, a plurality of scan drivers to activate the array of pixels, and a control unit to control a scanning sequence of the plurality of scan drivers, the electroluminescence display device further comprising a first mode wherein the array of pixels are activated in a sequence from a first row to a last row, and a second mode wherein the array of pixels are activated in a sequence from the last row to the first row.