Patent application number | Description | Published |
20120105393 | SHIFT REGISTER UNIT, GATE DRIVING DEVICE AND LIQUID CRYSTAL DISPLAY - The present invention provides a shift register unit, a gate driving device and a liquid crystal display, wherein the shift register unit includes a first thin film transistor, a second thin film transistor, a third thin film transistor and a fourth thin film transistor, and further includes a pull-down unit and a driving unit. Since the shift register unit includes the pull-down unit and the driving unit, it is possible to assure that the output gate driving signal keeps at a low level stably when the shift register unit needs to output a low level, and the pull-down unit operates under the driving of an alternating current signal, which can prevent the threshold voltage of the thin film transistor of the pull-down unit from offsetting largely. | 05-03-2012 |
20120105397 | SHIFT REGISTER UNIT, GATE DRIVING DEVICE AND LIQUID CRYSTAL DISPLAY - The present invention provides a shift register unit, a gate driving device and a liquid crystal display, wherein the shift register unit includes five thin film transistors. The drain of a first thin film transistor is connected to a first clock signal input terminal; the drain of a third thin film transistor is connected to the first clock signal input terminal, the gate thereof is connected to the gate of the first thin film transistor, and the source thereof is connected to a second signal output terminal. The shift register unit, the gate driving device and the liquid crystal display provided by the present invention separate the gate driving signal and the control signal for controlling the next neighboring shift register unit from each other, which can solve the problem that the accuracy of the gate driving signal is low due to the delay accumulation. | 05-03-2012 |
20120112987 | ARRAY SUBSTRATE AND LIQUID CRYSTAL DISPLAY - An embodiment of the disclosed technology provides an array substrate, comprising a base substrate, and data lines and gate lines crossed with each other to define a plurality of pixel units on the base substrate, wherein each pixel unit comprises two sub-pixel units, and the data line for the pixel unit is formed between the two sub-pixel units, and each of the two the sub-pixel units comprises a pixel electrode and a thin film transistor (TFT), which comprises a gate electrode, a source electrode, a drain electrode and an active layer. | 05-10-2012 |
20120327064 | AMOLED PANEL AND DRIVING CIRCUIT AND METHOD THEREFOR - Embodiments of the present disclosure relates to an active matrix organic light emitting diode (AMOLED) panel and the driving circuit and method therefor. The driving circuit of the AMOLED panel comprises: a driving transistor; a first transistor; a second capacitor; an organic light emitting diode; a voltage adjustment module, which is connected to a first control signal terminal, a second control signal terminal and a high level signal terminal, and is connected with the second capacitor, the driving transistor and the first transistor, for adjusting a gate-source voltage of the driving transistor connected with the second capacitor, such that a driving current of the driving transistor in a saturation status is independent of its threshold voltage. | 12-27-2012 |
20130106307 | ORGANIC LIGHT EMITTING DIODE DRIVING CIRCUIT, DISPLAY PANEL, DISPLAY AND DRIVING METHOD | 05-02-2013 |
20130134897 | PIXEL UNIT DRIVING CIRCUIT AND METHOD, PIXEL UNIT OF AMOLED PIXEL UNIT PANEL AND DISPLAY APPARATUS - The present disclosure discloses a pixel unit driving circuit and method, and a pixel unit of an Active Matrix Organic Light Emitting Diode AMOLED panel and a display apparatus. The pixel unit driving circuit of the AMOLED panel comprises: a switching unit, a first input terminal of which is connected to a current source for providing a charging current, a second input terminal of which is connected to an Organic Light-Emitting Diode, and an output terminal of which is connected to a first terminal of a storage capacitor to provide the charging current; the storage capacitor, a first terminal of which is connected to the output terminal of the switching unit, and a second terminal of which is connected to a low level; a driving Thin Film Transistor and a current mirror Thin Film Transistor, gates of which are connected to the first terminal of the storage capacitor, and sources of which are connected to the low level; a voltage-dividing Thin Film Transistor, gate of which is connected to the first terminal of the storage capacitor, a source of which is connected to a drain of the driving Thin Film Transistor, and a drain of which is connected to the Organic Light-Emitting Diode. | 05-30-2013 |
20130147386 | AMOLED PIXEL UNIT DRIVING CIRCUIT AND METHOD, AMOLED PIXEL UNIT AND DISPLAY APPARATUS - The present disclosure discloses an AMOLED pixel unit driving circuit and method, an AMOLED pixel unit and a display apparatus, the AMOLED pixel unit driving circuit includes: a switching unit with a first input terminal connected to a current source for supplying a charging current and a second input terminal connected to an OLED; a storage capacitor with a first terminal connected to an output terminal of the switching unit and a second terminal connected to a low level; a driving TFT with a gate electrode connected to the first terminal of the storage capacitor and a source electrode connected to the low level; and a current dividing unit with a first terminal connected to the low level. The embodiments of the present disclosure enable a relatively large scale to exist between the charging current Idata and the current loled flowing through the OLED. | 06-13-2013 |
20140064437 | SHIFT REGISTER AND DRIVING METHOD THEREOF, GATE DRIVING APPARATUS AND DISPLAY APPARATUS - A shift register and driving method thereof, a gate driving apparatus and a display apparatus, the shift register comprises a pulling-up unit( | 03-06-2014 |
20140111562 | AMOLED DRIVING CIRCUIT, AMOLED DRIVING METHOD, AND AMOLED DISPLAY DEVICE - In embodiments of the present disclosure, there are provided an AMOLED driving circuit, an AMOLED driving method and an AMOLED display device. The AMOLED driving circuit includes a light emitting device, a first switching transistor, a voltage regulator, a driving transistor and a capacitor. The driving transistor in the AMOLED driving circuit drives the light emitting device to emit light under the control of the voltage regulator, a driving current provided by the driving transistor is independent of Vth of the driving transistor, so that the driving current flowing through the light emitting device is prevented from being affected by the poor uniformity and drift of Vth, the uniformity in the driving currents flowing through the light emitting devices is enhanced, and thus the uniformity in the brightness of the AMOLED is improved. | 04-24-2014 |
20140152190 | PIXEL UNIT DRIVING CIRCUIT, PIXEL UNIT AND DISPLAY DEVICE - A pixel unit driving circuit, a pixel unit and a display device, wherein said pixel unit driving circuit of the pixel unit comprises a switching unit ( | 06-05-2014 |
20140177780 | SHIFT REGISTER AND THE DRIVING METHOD THEREOF, GATE DRIVING APPARATUS AND DISPLAY APPARATUS - The present invention provides a shift register, a driving method, a gate driving apparatus and a display apparatus. Said shift register comprises a pull-up unit, a reset unit, a pull-down unit and a signal output; the pull-up unit is connected to said signal output and pulls up an output signal; the reset unit is connected to a control end of said pull-up unit and said signal output respectively and resets the potential of the control end of said pull-up unit after said output signal is at high level; the pull-down unit is connected to a control end of said pull-up unit and said signal output respectively and pulls down the potential of the control end of said pull-up unit and said output signal after said reset unit has reset the potential of the control end of said pull-up unit, so that said pull-up unit switches off. | 06-26-2014 |
20140191669 | DRIVING CIRCUIT AND METHOD FOR PIXEL UNIT, PIXEL UNIT AND DISPLAY APPARATUS - The present invention provides a driving circuit and method for a pixel unit, a pixel unit and a display apparatus. The driving circuit for a pixel unit comprises: a driving thin-film transistor, a first switching element, a storage capacitor and a driving control unit; said driving control unit is used to control said storage capacitor to be charged/discharged so as to control said driving thin-film transistor to operate in a saturation region, so that the threshold voltage Vth of said driving thin-film transistor is compensated by utilizing the gate-source voltage of said driving thin-film transistor. The present invention can address the problems of ununiformity and attenuation of the brightness of OLED panel. | 07-10-2014 |
20150015463 | AMOLED DRIVING CIRCUIT AND DRIVING METHOD THEREOF, AND DISPLAY DEVICE - An AMOLED driving circuit, a driving method and a display device, wherein a control unit is connected to a data line and a control line, and is connected to a driving unit via first, second and third nodes; a charging unit is connected to the driving unit via the first node, and is connected to a first power source; the driving unit is connected to one end of a light emitting device, and is connected to the first power source; the other end of the light emitting device is connected to a second power source. The control unit controls a current so as to charge the charging unit through the driving unit, and controls the charging unit so as to supply a voltage to the driving unit through the first node, so that the driving unit is driven by the voltage and drives the light emitting device to emit light. | 01-15-2015 |
20150028762 | PIXEL CIRCUIT AND METHOD FOR DRIVING THE SAME, DISPLAY PANEL AND DISPLAY APPARATUS - A pixel circuit and a method for driving the same, a display panel and a display apparatus are configured to improve the lifespan of the pixel circuit. The pixel circuit comprises: a charging sub-circuit ( | 01-29-2015 |
20150043703 | SHIFT REGISTER UNIT, DRIVING METHOD THEREOF, SHIFT REGISTER AND DISPLAY DEVICE - Embodiments of the present invention provides a shift register unit, driving method thereof, a shift register and a display device. A switch-off module is provided to disconnect electrical connections between a pull-up node and a precharge module and between the pull-up node and a pull-down module at a pull-up stage. As a result, it is able to prevent excessive electric leakage of a GOA circuit, thereby to improve the reliability and power consumption of the GOA circuit with an Oxide TFT. | 02-12-2015 |
20150049046 | Amoled Pixel Circuit, a Driving Method Thereof and a Display Device - The present invention provides an AMOLED pixel circuit, a driving method thereof and a display device which can improve the integration degree of the in cell touch circuit and the AMOLED driving circuit. The AMOLED pixel circuit comprises: a light emitting module, a touching module, a controlling module and a driving and amplifying module. The embodiments of the present invention are used for manufacturing the AMOLED display device. | 02-19-2015 |