Class / Patent application number | Description | Number of patent applications / Date published |
377068000 | Compensating for or preventing signal deterioration | 15 |
20080253499 | SHIFT REGISTER AND LEVEL CONTROLLER - A shift register includes several stages of shift register units. Each shift register unit includes a first level lifting unit, first level lowering unit, first driving unit and level controller. The first level lifting unit and first level lowering unit control the scan signal to be equal to a first timing signal and first voltage, respectively. The level controller includes an input unit, a charge storage unit, a second level lifting unit and a second level lowering unit. The input unit controls the third control signal to be equal to the first voltage at a node. The charge storage unit stores a voltage of the timing signal at the node. The second level lifting unit and second level lowering unit respectively control the second control signal to be equal to the third control signal and the first voltage to turn on and turn off the first level lowering unit. | 10-16-2008 |
20090122951 | SHIFT REGISTER CIRCUIT - A bidirectional shift register in which an operation margin is not lowered when a shift direction of a signal is switched is provided. A unit shift register SR | 05-14-2009 |
20090175405 | SHIFT REGISTER - A shift register is used for outputting an output pulse at output end in response to a delay of an input pulse received at an input end. The shift register includes a controller, a pre-charging switch, a level shifting switch, and an output generator. The controller is used for generating a level switching signal. The pre-charging switch is used for conducting a first supply voltage to a level shifting node in response to the input pulse. The level shifting switch turns on in response to the level switching signal. The output generator is used for generating the output pulse at the output end, when the level shifting switch turns on. | 07-09-2009 |
20100034338 | SHIFT REGISTER AND SEMICONDUCTOR DISPLAY DEVICE - The invention provides a shift register which can operate normally while suppressing a delay of signal and a rounding of waveform. The shift register of the invention includes a plurality of stages of flip-flop circuits each of which includes a clocked inverter. The clocked inverter includes a first transistor and a second transistor which are connected in series, a first compensation circuit including a third transistor and a fourth transistor which are connected in series, and a second compensation circuit including a fifth transistor and a transmission gate. According to the first compensation circuit, a timing at which a signal outputted from the flip-flop circuit rises or falls can be controlled in synchronization with an output of two stages before. The second compensation circuit can control a clock signal input can be controlled. | 02-11-2010 |
20110091006 | SHIFT REGISTER CIRCUIT - A shift register circuit includes plural shift register stages for providing plural gate signals to plural gate lines. Each shift register stage includes a pull-up unit, an input unit for receiving an input signal, an energy-store unit for providing a driving control voltage in response to the input signal, a discharging unit, a couple unit and a pull-down unit. The pull-up unit pulls up a first gate signal in response to the driving control voltage. The discharging unit performs a discharging operation for pulling down the driving control voltage. The couple unit is utilized for coupling the energy-store unit with a succeeding shift register circuit stage so that the falling edge of a second gate signal generated by the succeeding shift register stage is capable of shifting down the driving control voltage. The pull-down unit pulls down the first gate signal in response to the second gate signal. | 04-21-2011 |
20140056399 | SHIFT REGISTER UNIT, SHIFTER REGISTER CIRCUIT, ARRAY SUBSTRATE AND DISPLAY DEVICE - The present invention provides a shift register unit, a shift register circuit, an array substrate and a display device, and relates to the area of display manufacturing. The time of the bias working on the de-noising transistor can be reduced without affecting the circuit stability, so that the operational lifespan of the device can be extended. A shift register comprises: a capacitor, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a de-noising control model. The present invention is used for manufacturing displays. | 02-27-2014 |
20140140468 | SHIFT REGISTER - A shift register includes a previous signal receiving unit, a next signal receiving unit, a control unit and a voltage stabilizing switch. The shift register controls an outputting signal by continuously stabilized voltage generated from cooperating operation of the units and switch. | 05-22-2014 |
20140219412 | SHIFT REGISTER CIRCUIT AND SHADING WAVEFORM GENERATING METHOD - A shift register circuit and a shading waveform generating method are disclosed. The shift register circuit includes plural stages of shift registers. Each stage of the shift register includes an output transistor, an input unit and a gate-shading circuit. The output transistor is configured for generating an output signal of the stage of the shift register. The input unit is configured for controlling a voltage level on a gate terminal of the output transistor. The gate-shading circuit includes a first switch, a second switch and a third switch. The first switch is configured for outputting a control signal. The second switch is configured for pulling down the voltage level on the gate terminal of the output transistor according to the control signal. The third switch is configured for pulling down a level on an output terminal of the output transistor according to the control signal. | 08-07-2014 |
20150016584 | SHIFT REGISTER UNIT, DISPLAY PANEL AND DISPLAY DEVICE - A shift register unit, a display panel including the shift register unit and a display device including the display panel are provided. The shift register unit includes a driving module, an output module, a first transistor, and a second transistor. By connecting a second electrode of the first transistor in the shift register unit with an output terminal of the shift register unit, even if a channel width of the second transistor is considerably smaller than a theoretical design value, abnormal output of the shift register unit can be avoided. | 01-15-2015 |
20150036784 | SHIFT REGISTER UNIT, SHIFT REGISTER AND DISPLAY APPARATUS - A shift register unit, a shift register and a display apparatus, insulate a start charging capacitor from the gate of the driving transistor, and adopt a dual pulling-down structure for the gate of the driving transistor and the output terminal simultaneously thereby the transistor can be turned off normally and a leakage is prevented. The shift register unit comprises: a driving transistor (T | 02-05-2015 |
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 |
20150043704 | SHIFT REGISTER UNIT, GATE DRIVING CIRCUIT AND DISPLAY DEVICE - A shift register unit comprises a pull-up control module ( | 02-12-2015 |
20150131771 | SHIFT REGISTER UNIT, DRIVING METHOD, GATE DRIVING CIRCUIT AND DISPLAY DEVICE - There is provided a shift register unit and driving method thereof, a gate driving circuit and display device. By setting the voltage stabilizing capacitor (C) connected to the pull-up node (P), the shift register unit utilizes the voltage stabilizing capacitor (C | 05-14-2015 |
20150318051 | SHIFT REGISTER CIRCUIT - A shift register circuit includes a first transistor, a capacitor, a pull-up control circuit, a first pull-down circuit, a pull-down control circuit, a second pull-down circuit and a compensation circuit. The compensation circuit further includes a second transistor, a third transistor, a fourth transistor, a fifth transistor and a sixth transistor. The second transistor, the third transistor, the fourth transistor, and the fifth transistor are corporately used to output a compensation pulse; and the sixth transistor is used to output the compensation pulse to a gate terminal of the first transistor thereby compensating a control signal. | 11-05-2015 |
20150364079 | SHIFT REGISTER UNIT, GATE DRIVING CIRCUIT AND DISPLAY PANEL - This disclosure provides a shift register unit comprising an access control module and a shift register module. The access control module is used for controlling access of an input signal and a reset signal. The shift register module is used for outputting the accessed input signal or reset signal under the driving of a clock signal. The access control module comprises a depletion field effect transistor. The shift register unit further comprises a connection control module arranged between the access control module and the shift register module for blocking the connection between the access control module and the shift register module when the shift register module performs outputting. By means of the design of the connection control module in this disclosure, when the shift register unit performs outputting, its high potential leakage path is blocked, so as to reduce the leakage current greatly, and ensure normal output of the shift register unit. This disclosure further provides a gate driving circuit comprising the shift register unit and a display panel comprising the gate driving circuit. | 12-17-2015 |