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 |
20120293401 | SHIFT REGISTER UNIT CIRCUIT, SHIFT REGISTER, ARRAY SUBSTRATE AND LIQUID CRYSTAL DISPLAY - Embodiments of the disclosed technical solution provides a shift register unit circuit which operates based on two clock signals and comprises input terminals, a pre-charging circuit, a first level pulling-down circuit, a second level pulling-down circuit and a scan signal output terminal. Embodiments of the disclosed technical solution also provides a shift register having at least two shift register unit circuits connected in cascade, and further provides a liquid crystal display array substrate and a liquid crystal display. Embodiments of the disclosed technical solution settles problems that a threshold voltage of the pulling-down TFT would drift under a direct current bias voltage and a output is unstable due to a clock hopping, increases a reliability of the circuit and reduces power consumption. | 11-22-2012 |
20120293737 | SHIFT REGISTER UNIT CIRCUIT, SHIFT REGISTER, ARRAY SUBSTRATE AND LIQUID CRYSTAL DISPLAY - Embodiments of the disclosed technical solution provides a shift register unit circuit which operates based on two clock signals and comprises input terminals, a pre-charging circuit, a level pulling-down circuit, a outputting circuit and a scan signal output terminal. Embodiments of the disclosed technical solution also provides a shift register having at least two shift register unit circuits connected in cascade, and further provides a liquid crystal display array substrate and a liquid crystal display. The disclosed technical solution stabilizes the wave output from the scan signal output terminal and has small noise by means of a design of pulling down the level, and may realize the GOA circuit utilizing less TFTs circuits, so that the circuit structure is simple and power consumption is small. | 11-22-2012 |
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 |
20130136224 | SHIFT REGISTER, GATE DRIVER, AND DISPLAY DEVICE - The present invention relates to a display device field, and provides a shift register, a gate driver, and a display device. The shift register comprises an input programming unit, a latch unit, an output programming unit and an inverting output unit; the input programming unit is connected to the input end of the latch unit to program the input end of the latch unit; the latch unit is used for latching the output signal, and a non-inverting output end and an inverting output end of the latch unit are connected through the output programming unit; the output programming unit is connected to the output end of the latch unit to program the output end of the latch unit; the inverting output unit is connected to the inverting output end of the latch unit and is used for generating a inverting output signal of the shift register. | 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 |
20140049568 | AMOLED DRIVING AND COMPENSATING CIRCUIT AND METHOD, AND AMOLED DISPLAY DEVICE - The present disclosure discloses an AMOLED driving and compensating circuit and method, and AMOLED display device. The driving and compensating circuit comprising: several driving circuits set inside several pixel regions used for driving several AMOLEDs; an external compensating circuit set outside the pixel regions used for eliminating an effect of threshold voltage of a driving thin film transistors in the several driving circuits set inside the several pixel regions on driving currents passing through the driving thin film transistors. The driving and compensating method comprising: storing threshold voltage of the driving thin film transistors of the several driving circuits set inside the several pixel regions; storing grayscale voltage of each of the several driving circuits set inside the several pixel regions; gate voltage of the driving thin film transistor of each of the several driving circuits set inside the several pixel regions jumping to a sum of the threshold voltage and the grayscale voltage of the driving circuit. The display device comprises the AMOLED driving and compensating circuit. | 02-20-2014 |
20140055325 | PIXEL UNIT DRIVING CIRCUIT AND METHOD THEREOF, PIXEL UNIT AND DISPLAY APPARATUS - A pixel unit driving circuit and a method thereof, a pixel unit and a display apparatus can improve uniformity in the brightness of an OLED panel. The pixel unit driving circuit comprises a driving thin film transistor (DTFT), a matching thin film transistor (MTFT), a signal-erasing thin film transistor (ETFT), a charging control unit ( | 02-27-2014 |
20140055334 | SHIFTING REGISTER, GATE DRIVING APPARATUS AND DISPLAY APPARATUS - A shifting register, a gate driving apparatus and a display apparatus comprising the shifting register. The shifting register comprises a latch ( | 02-27-2014 |
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 |
20140064439 | Shift Register Unit, Shift Register And Display Apparatus - A shift register unit, shift register and display apparatus, for addressing the issue that the leakage current of the depletion TFT affects the shift register. The shift register unit includes: a first output control module ( | 03-06-2014 |
20140070725 | PIXEL CIRCUIT AND DRIVING METHOD THEREOF - It discloses a pixel circuit and a driving method thereof. The pixel circuit includes a light-emitting device (OLED), a driving transistor (DTFT), a storage capacitor (Cst), a first switching transistor (T | 03-13-2014 |
20140071104 | Shift Register Unit, Gate Driving Circuit And Display Apparatus - A shift register unit, a gate driving circuit and a display apparatus are disclosed. The shift register unit includes a first TFT (T1) having a first electrode connected to an input terminal and a gate connected to a second clock signal input terminal; a second TFT (T2); a third TFT (T3) having a second electrode connected to an output terminal, a first electrode connected to a first clock signal input terminal, and a gate connected to the second electrode of the first TFT; a fourth TFT (T4); a fifth TFT (T5) having a gate connected to the second clock signal input terminal, a first electrode connected to the output terminal and a second electrode connected to the low potential connecting terminal; a capacitor (C1), and thus the burrs and miscellaneous spikes in a gate driving waveform outputted by the circuit can be suppressed well. | 03-13-2014 |
20140078028 | PIXEL UNIT DRIVING CIRCUIT, PIXEL UNIT DRIVING METHOD AND PIXEL UNIT - A pixel unit driving circuit, a pixel unit driving method and a pixel unit, which can improve the problems of OLED panel luminance uniformity and luminance decreasing caused by material aging. The pixel unit driving circuit includes a driving TFT (DTFT), a matching TFT (MTFT), a first switching element ( | 03-20-2014 |
20140084806 | PIXEL UNIT DRIVING CIRCUIT AND DRIVING METHOD, AND DISPLAY APPARATUS - The present disclosure discloses a pixel unit driving circuit, a driving method, and a display apparatus, wherein the pixel unit driving circuit includes a light-emitting device, a driving transistor, a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a first capacitor, and a second capacitor. The pixel unit driving circuit is driven in a stepwise manner by the turn-on/off of the switching transistors in cooperation with the charging of the capacitors, so that a driving current of the driving transistor has no relation to the turn-on voltage V | 03-27-2014 |
20140085283 | Gate Driving Circuit And Display - A gate driving circuit and a display, the gate driving circuit comprises a plurality of shift register connected in cascade. The shift register comprises: a signal outputting circuit ( | 03-27-2014 |
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 |
20140117862 | DRIVING CIRCUIT AND METHOD FOR PIXEL UNIT, PIXEL UNIT AND DISPLAY APPARATUS - A driving circuit and method for a pixel unit, the pixel unit and a display apparatus. The driving circuit for the pixel unit includes a switching unit, a storage capacitor (Cst), a first transistor (T | 05-01-2014 |
20140131717 | Pixel Unit Structure, Array Substrate and Display Device - The invention discloses a pixel unit structure, an array substrate and a display device and relates to the technical field of liquid crystal displays. The pixel unit structure has a storage capacitor and has a high aperture ratio and a low manufacturing cost of the pixel unit. The pixel unit structure comprises a thin film transistor (TFT) and a first barrier layer, wherein the first barrier layer is opposite to a drain region of an active layer of the TFT, and is connected to a common electrode of an array substrate, thereby a capacitor can be formed between the first barrier layer and the drain region of the active layer. | 05-15-2014 |
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 |
20140204011 | GATE DRIVE CIRCUIT, ARRAY SUBSTRATE AND DISPLAY APPARATUS - A gate drive circuit, comprising: a plurality of shift register units each having a signal output end, wherein the signal output end of one of the plurality of shift register units except the last one is connected to the signal input end of the next one; L arithmetic units each having a plurality of input ends, wherein L is an integer equal to or larger than 2, and one of the plurality of input ends of each of the L arithmetic units is connected to the signal output end of a respective shift register unit; and a clock generation unit having a plurality of clock output ends for outputting different clock signals, wherein at least one of the plurality of clock output ends is connected to at least one of the other input ends of a respective arithmetic unit except the one input end connected to the signal output end of the shift register unit, so that the L arithmetic units output L different drive signals. | 07-24-2014 |
20140306867 | PIXEL CIRCUIT, DRIVING METHOD THEREFOR AND DISPLAY DEVICE - Provided are a pixel circuit, a driving method for the pixel circuit and a display device including the pixel circuit. In the pixel circuit, when the data is written to the storage capacitor, the threshold voltage of the driving transistor and the data voltage are pre-stored in the storage capacitor by means of a diode connection formed by the driving transistor, so that the drift of the threshold voltage can be compensated effectively, and thus the uniformity and the stability of the driving current are maintained. Further, in the embodiment of the present disclosure, the scan signal for the pixel circuit is multiplexed in the touch circuit, and the coupling capacitor in the touch circuit is charged simultaneously while the storage capacitor is charged, and thus, the integration of the touch circuit into the pixel circuit can be realized perfectly without increasing the complexity of the circuit structure and the operation thereof. | 10-16-2014 |
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 |
20150035798 | Organic Light-Emitting Diode Pixel Circuit, Drive Method Thereof, and Display Device - The present invention belongs to the field of display technology, and provides an OLED pixel circuit, a drive method thereof and a display device, which may solve the problem of relatively complicated control circuit and manufacturing process of an existing in-cell touch screen. In the OLED pixel circuit of the present invention, the data writing unit is for writing power supply voltage signal and data line voltage signal into the storage unit; the storage unit is for supplying voltage to the drive unit; the touch detecting unit is for sensing touch and generating a detecting signal; the drive unit is for converting the detecting signal into a touch output signal and for 10 providing drive current fin the OLED; and the light-emitting control unit is for turning on the drive unit and the OLED. The present invention may allow the touch display device to be thinner and lighter. | 02-05-2015 |
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 |
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 |
20150053947 | LIGHT EMITTING DIODE PIXEL UNIT CIRCUIT AND DISPLAY PANEL - A LED pixel unit circuit and a display panel. The circuit comprises a driving module ( | 02-26-2015 |