Boe Technology Group Co., Ltd.

Chengdu Boe Optoelectronics Technology Co., Ltd.

Ordos Yuansheng Optoelectronics Co., Ltd.

Like Hu

Xiaojing Qi

Haigang Qing

Wen Tan

Fuqiang Li

Bo Wu

Young Yik Ko

Xiaoxiang He

Hao Luo

A shift register unit and a driving method thereof, a gate drive circuit and a display device. The shift register unit includes a first input circuit, an output circuit and a first output pull-down circuit. The first input circuit is configured to charge a pull-up node in response to a first clock signal and reset the pull-up node in response to the first clock signal; the output circuit is configured to output a second clock signal to an output terminal under a control of a level of the pull-up node; the first output pull-down circuit is configured to denoise the output in response to a third clock signal.

Shift register unit and driving method thereof, gate drive circuit and display device

The embodiments of the present disclosure provide a shift register unit, a gate driving circuit with bi-directional scan, and a display apparatus. The shift register unit comprises: an input module configured to provide a first input signal to a first node; a first control module configured to provide a pull-up output based on the first input signal and the third clock signal, and then provide a pull-down output; and a second control module configured to maintain a level at the output node at the source voltage based on a fourth clock signal. The first control module comprises a first transistor that remains on after the pull-up output to provide the pull-down output, and the second control module comprises a second transistor that maintains the level at the output node. The shift register unit according to the embodiment of the present disclosure achieves bi-directional scan with a simple design, which is beneficial for wiring in display panels with narrow rims and high resolutions. Further, since the second transistor is provided only for pull-down maintenance, a transistor of a small size can be used to further reduce the size of the circuit.

Shift register unit, gate driving circuit and display apparatus

The present disclosure provides a display substrate, a manufacturing method thereof, and a display device. The display substrate includes a shielding pattern created from a layer identical to a pixel electrode and configured to prevent a display function of a display function layer from being adversely affected by a signal from a signal line.

Display substrate, manufacturing method thereof, and display device

A shift register includes: a plurality of clock signal terminals; and a plurality of input terminals. The plurality input terminals are configured to provide input signals under control by one or more clock signals from one or more of the plurality of clock signal terminals to realize both a forward scan and a backward scan of the shift register.

Shift register, driving method, and gate electrode drive circuit

A shift register, a driving method, a gate driving circuit and a display device. The shift register comprises an input terminal (STV_IN), a reset terminal (STV_RES), a trigger terminal (CLK_IN), an output terminal (STV_OUT), an input module connected to the input terminal (STV_IN) and the reset terminal (STV_RES) and configured to deliver a signal received from the input terminal (STV_IN) or a signal received from the reset terminal (STV_RES) to an output module under the control of an external signal (UD, DU); a trigger module connected to the input terminal (STV_IN), the reset terminal (STV_RES) and the trigger terminal (CLK_IN) and configured to deliver a signal received from the trigger terminal (CLK_IN) to the output module when a signal is received from the input terminal (STV_IN) or from the reset terminal (STV_RES); and the output module connected to the input module, the trigger module and the output terminal (STV_OUT) and configured to flip a signal outputted from the output terminal (STV_OUT) between an output state and a reset state according to a signal from the input module under the trigger of the signal from the trigger module. The trigger signal is filtered out when no signal is inputted by setting the trigger module or the trigger unit, such that remaining circuits keep in a steady state holding state, which is benefit for reducing of power consumption.

Shift register, driving method, gate driving circuit and display device

The present disclosure provides a shift register, its driving method, a gate driver circuit and a display device. The shift register includes an input module, a resetting module, a touch switching module, a node control module, a first output module and a second output module. In the shift register, through the cooperation of the above six modules, it is able to provide a touch stage between any two adjacent time periods of a display stage, it enables a driving signal output end of the shift register to output a DC signal at the touch stage, and enable the gate driver circuit to achieve a display function after the touch stage is ended.

Shift register, its driving method, gate driver circuit and display device

The embodiment of the present disclosure provides a pixel unit driving circuit comprising: a driving unit; a charging unit; a storage unit configured to be charged during the charging stage of the pixel unit driving circuit, and provide a control voltage to the driving unit during a driving stage of the pixel unit driving circuit; a lighting control unit configured to make that a driving current provided from the driving unit to the lighting element during the driving stage of the pixel unit driving circuit is independent on a threshold voltage of the driving unit; and the driving control unit connected to the lighting control unit, the storage unit and the driving unit and configured to control the supply of the control voltage of the driving unit. According the embodiments of the present disclosure, the influence of the threshold voltage of the driving unit on the operating current is eliminated by providing the lighting control unit and the driving control unit, so as to moderate the drift of the threshold voltage caused by process procedure and a long term operation and to ensure the uniformity of the displayed brightness of the lighting element.

Pixel unit driving circuit, pixel unit driving method, pixel unit and display apparatus

The present invention provides an array substrate and a manufacturing method thereof, a display panel and a display device. The manufacturing method of an array substrate in the present invention comprises: forming light-shielding layers on the base substrate through a patterning process by using a light-shielding layer-doping multiplexing mask plate; and performing doping of CMOS transistors by using the light-shielding layer-doping multiplexing mask plate. In the invention, two mask plates used in manufacturing the light-shielding layer and the doping process in the prior art are replaced with one light-shielding layer-doping multiplexing mask plate, therefore the number of the mask plates during manufacturing is reduced and the cost is decreased. Meanwhile, providing of the light-shielding layer below the N type transistors in the driving region of the array substrate may prevent light-induced leakage current from being generated in the conductive region.

Array substrate and manufacturing method thereof, display panel and display device

The present invention provides an organic light emitting diode pixel circuit, a driving method thereof and a display panel. The OLED pixel circuit comprises a light emitting module comprising an organic light emitting diode for emitting light; a light emitting control module for controlling the light emitting module to emit light; a driving module, so as to control the light emitting module to emit light; a threshold compensation module, and a data signal input module configured for inputting a data signal; the OLED pixel circuit further comprises: a touch sensing module configured for generating a touch sensing signal; and a touch detection module configured for detecting the touch sensing signal, and providing an initial voltage for the threshold compensation module, wherein the driving module amplifies the touch sensing signal generated by the touch sensing module and then outputs it to the touch detection module.

OLED pixel circuit, driving method thereof and display panel

Provided are a GOA unit and driving method, a GOA circuit and a display apparatus. A first node control unit () pulls a first node (PU) to a voltage at a first level terminal (CN) under the control of a first input terminal (IN), or to a voltage at a second level terminal (CNB) under the control of a second input terminal (INPUT). A second node control unit () pulls a second node (PD) to a voltage at a third level terminal (VGH) under the control of the first level terminal (CN), the second level terminal (CNB), a second clock signal terminal (CK) and a third clock signal terminal (CK), or to a voltage at a fourth level terminal (VGL) under the control of the first node (PU). An output unit () outputs a signal at the first clock signal terminal (CK) under the control of the first node (PU), or pulls the output terminal (OUTPUT) to the voltage at the fourth level terminal (VGL) under the control of the second node (PD).

Gate drive on array unit and method for driving the same, gate drive on array circuit and display apparatus

The present disclosure discloses an output buffer, a gate electrode driving circuit and a method for controlling the same. The output buffer includes a first transistor, a second transistor and an input signal control unit. The input signal control unit controls an input signal to obtain a pull-up signal and a pull-down signal, which are input to input terminals of the first transistor and the second transistor, respectively. The above output buffer uses the input signal control unit to divide one input signal into two signals, i.e., the pull-up signal and the pull-down signal.

Output buffer, gate electrode driving circuit and method for controlling the same

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.

Gate drive circuit, array substrate and display apparatus

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.

Pixel unit structure, array substrate and display device

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.

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Beijing, China

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