Patent application number | Description | Published |
20090146698 | DRIVING CIRCUIT AND A PIXEL CIRCUIT INCORPORATING THE SAME - A driving circuit includes: a switch unit operable according to a scan signal, and adapted for permitting transfer of a data signal when operating in an on state; a capacitor having a first end that is coupled to the switch unit, and a second end; a first transistor having a first terminal that is adapted for coupling to a voltage source, a second terminal that is coupled to the second end of the capacitor and that is adapted to be coupled to a load, and a control terminal that is coupled to the first end of the capacitor; and a second transistor having a first terminal that is adapted for coupling to the voltage source, a second terminal coupled to the second terminal of the first transistor, and a control terminal that is adapted for receiving a bias voltage. Each of the first and second transistors operates in the linear region. | 06-11-2009 |
20100109718 | Driving Circuit, and a Pixel Circuit Incorporating the Same - A driving circuit includes: a switch unit permitting transfer of a data signal when operating in an on state; a capacitor having a first end coupled to the switch unit, and a second end; a first transistor having a first terminal for coupling to a second voltage source, a second terminal coupled to the second end of the capacitor and to a load, and a control terminal coupled to the first end of the capacitor; and a second transistor having a first terminal coupled to the second end of the capacitor, a second terminal receiving a bias voltage, and a control terminal coupled to the first terminal of the second transistor. | 05-06-2010 |
20110156611 | DRIVING DEVICE OF LIGHT EMITTING UNIT - A driving device of a light emitting unit is provided. The driving device includes a driving circuit, a switch, a capacitor, and a compensation circuit. The driving circuit has a control terminal and a driving terminal connected to the light emitting unit. The driving circuit determines a driving current according to the voltage on the control terminal. The switch has a first end for receiving a data voltage, a second end connected to the light emitting unit, and a control end for receiving a scan voltage. The capacitor has a first end connected to the control terminal of the driving circuit and a second end connected to the second end of the switch. The compensation circuit has an output terminal connected to the first end of the capacitor. The compensation circuit supplies a reset voltage to the first end of the capacitor when the switch is turned on. | 06-30-2011 |
20110157147 | DRIVING DEVICE OF LIGHT EMITTING UNIT - A driving device of a light emitting unit is provided, which includes a driving circuit, a memory unit, a reset circuit, a first switch and a compensation circuit. The driving circuit determines a driving current according to a voltage of a control node. The memory unit maintains a voltage of the control node of the driving circuit. The reset circuit provides a reset voltage to the control node of the driving circuit during a reset period. A first node of the first switch receives a data voltage, and the control node of the first switch receives a scan voltage. The compensation circuit is connected between a second node of the first switch and the control node of the driving circuit to transmit the data voltage provided by the first switch to the control node of the driving circuit. | 06-30-2011 |
20110254883 | PIXEL CIRCUIT RELATING TO ORGANIC LIGHT EMITTING DIODE AND DISPLAY USING THE SAME AND DRIVING METHOD THEREOF - A pixel circuit relating to an organic light emitting diode (OLED) and a display using the same and a driving method thereof are provided. The pixel circuit submitted by the present invention adopts a 3T2C architecture (i.e. three TFTs plus two capacitors), and which circuit topology being driven by the corresponding scan signals and data signal may make the luminance shown by the pixel circuit only relate to the data signal and do not relate to the threshold voltage of a transistor used to drive a lighting element (i.e. OLED), a system high voltage received by the pixel circuit, and a potential between an anode and a cathode of the lighting element, such that the problem of non-uniform displaying on the OLED display panel may be improved or resolved effectively. | 10-20-2011 |
20120068983 | SWITCHABLE ORGANIC ELECTRO- LUMINESCENCE DISPLAY PANEL AND SWITCHABLE ORGANIC ELECTRO-LUMINESCENCE DISPLAY CIRCUIT - A switchable organic electro-luminescence display circuit includes a plurality of scan lines, a plurality of data lines, a plurality of first organic electro-luminescence devices, a plurality of second organic electro-luminescence devices, a display mode switching line, and at least one display mode switching transistor. Each of the first organic electro-luminescence devices is electrically connected to a scan line and a data line correspondingly, and coupled between a first voltage source and a second voltage source. Each of the second organic electro-luminescence devices is electrically connected to a scan line and a data line correspondingly, and coupled to the first voltage source. A gate electrode of the display mode switching transistor is electrically connected to the display mode switching line. A source electrode and a drain electrode of the display mode switching transistor are electrically connected to the second voltage source and the second organic electro-luminescence devices respectively. | 03-22-2012 |
20120139819 | ORGANIC LIGHT EMITTING DIODE PIXEL ARRAY - An organic light emitting diode (OLED) pixel array includes a plurality of first signal lines, a plurality of second signal lines, and a plurality of pixel array units. The pixel array units are arranged in array on a substrate. Each of the pixel array units includes a plurality of OLED pixels. The OLED pixels are connected to the same first signal line and respectively connected to a first portion and a second portion of the second signal lines. At least two of the OLED pixels are located between the first portion and the second portion. A transmittance region is surrounded by the first portion, the second portion, and the OLED pixels, and the first portion and the second portion are respectively located at two opposite sides of the transmittance region. | 06-07-2012 |
20130293525 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD FOR DRIVING ORGANIC LIGHT EMITTING DIODE DISPLAY PANEL - An organic light emitting diode (OLED) display device and a method for driving an OLED display panel are provided. The method includes the following steps. In a reset period, a plurality of scanning signals received by a plurality of pixels of the OLED display panel is simultaneously enabled, and a plurality of data-voltages received by the pixels are set to a reference-voltage. In a threshold voltage cancelling period, a system-high-voltage received by the pixels and the scanning signals are simultaneously enabled, and the data-voltages are set to the reference-voltage. In a scanning period, the scanning signals are sequentially enabled, and the data-voltages are set according to the corresponded displaying data within a plurality of displaying data. | 11-07-2013 |
20130314308 | ORGANIC LIGHT EMITTING DISPLAY UNIT STRUCTURE AND ORGANIC LIGHT EMITTING DISPLAY UNIT CIRCUIT - An organic light emitting display unit structure including a first pixel, a second pixel adjacent to the first pixel, a first scan line electrically connected to the first pixel, a second scan line electrically connected to the second pixel, a data line, a power line, a sustaining signal line, a common reset signal line and a common light emitting signal line is provided. The power line and the sustaining signal line are respectively electrically connected to both of the first pixel and the second pixel. The data line intersects with the first scan line and the second scan line and is electrically connected to the first pixel and the second pixel. The common reset signal line and the common light emitting signal line are substantially disposed inside the first pixel and the second pixel respectively and are electrically connected to the first pixel and the second pixel. | 11-28-2013 |