Wuhan China Star Optoelectronics Technology Co., Ltd.

Shenzhen China Star Optoelectronics Technology Co., Ltd.

Shenzhen Royole Technologies Co., Ltd.

Wuhan China Star Optoelectronics Co., Ltd.

Yao Yan

Shangcao Cao

Juncheng Xiao

Ronglei Dai

Mang Zhao

Ze Yuan

Shaowen Wang

Jiahao Kang

A pixel scan drive circuit including a switch unit, a pull-up output unit and a pull-down output unit is provided. In a scan signal output phase of a scanning cycle, the pull-down output unit outputs a first reference voltage in a scan signal to an output end according to a clock signal. In a maintenance phase of the scanning cycle, the switch unit controls the voltage of a pull-down node according to a switch control signal, thereby controlling the pull-down output unit to stop outputting the first reference voltage. In the maintenance phase, the pull-up output unit outputs a second reference voltage in the scan signal. The second reference voltage controls the pixel units to stop receiving the image data. Transistors in the switch unit are of different types from transistors in the pull-up output unit and the pull-down output unit. An array substrate and a display terminal are provided.

Pixel scan drive circuit, array substrate and display terminal

The array substrate, the liquid crystal display panel and the liquid crystal display device of the present disclosure are designed to form the MIS storage capacitor by the P&#x2014;Si semiconductor layer, the first metal layer and the insulating layer between above or the P&#x2014;Si semiconductor layer, the second metal layer and the dielectric spacer layer between above, when one side of the first metal layer or the second metal layer receiving the negative gray voltage, the P&#x2014;Si in the P&#x2014;Si semiconductor layer will gather to form the hole, when receiving the positive gray voltage, will form the depletion layer on the upper layer of the P&#x2014;Si to reduce the capacity of the MIS storage capacitor, thereby reducing the difference of the capacitance when the MIS storage capacitor in the positive and negative gray voltage, improving the flicker phenomena and ensuring the display effect.

Array substrate, liquid crystal display panel and liquid crystal display device

The array substrate, the liquid crystal display panel and the liquid crystal display device of the present disclosure are designed to from the MIS storage capacitor by the P-Si semiconductor layer, the first metal layer and the insulating layer between above or the P-Si semiconductor layer, the second metal layer and the dielectric spacer layer between above, when one side of the first metal layer or the second metal layer receiving the negative gray voltage, the P-Si in the P-Si semiconductor layer will gather to form the hole, when receiving the positive gray voltage, will form the depletion layer on the upper layer of the P-Si to reduce the capacity of the MIS storage capacitor, thereby reducing the difference of the capacitance when the MIS storage capacitor in the positive and negative gray voltage, improving the flicker phenomena and ensuring the display effect.

A GOA circuit, a display device, and a driving method of GOA circuit are disclosed. A N-th level GOA unit is configured for charging the N-th level horizontal scanning line (G(N)) within a display area of the display device. The N-th level horizontal scanning line (G(N)) connects to GAS. In response to the GAS, the horizontal scanning lines corresponding to all of the GOA units are in a charging state. In this way, the horizontal scanning lines at each level are connected to the GAS, such that when the GAS are valid, the corresponding horizontal scanning line at each level are in the charging state of in an on-state so as to realize the All Gate On function.

GOA circuits, display devices and the driving methods of the GOA circuits

A gate on array (GOA) circuit for used in an LCD includes GOA units connected in cascade. An Nth GOA unit includes an Nth stage-transmittance circuit, an Nth Q-node controlling circuit, an Nth P-node controlling circuit, an Nth outputting circuit, and a first switch circuit where N is a positive integer. The first switch circuit connected to the Nth scanning line, for inputting an enabling signal to the Nth scanning line before the LCD shows images so as to turn on a TFT in a pixel which the Nth scanning line is connected to. The benefit of the function is that the display does not leak electricity when the black screen is woken up and that the stability of the circuit is enhanced at the same time.

GOA circuit and method for driving the same and LCD

The array substrate, the liquid crystal display panel and the liquid crystal display device of the present disclosure are designed to from the MIS storage capacitor by the P&#x2014;Si semiconductor layer, the first metal layer and the insulating layer between above or the P&#x2014;Si semiconductor layer, the second metal layer and the dielectric spacer layer between above, when one side of the first metal layer or the second metal layer receiving the negative gray voltage, the P&#x2014;Si in the P&#x2014;Si semiconductor layer will gather to form the hole, when receiving the positive gray voltage, will form the depletion layer on the upper layer of the P&#x2014;Si to reduce the capacity of the MIS storage capacitor, thereby reducing the difference of the capacitance when the MIS storage capacitor in the positive and negative gray voltage, improving the flicker phenomena and ensuring the display effect.

The disclosure provides a GOA circuit, a driving method thereof and a liquid crystal display device. The GOA circuit comprises a plurality of GOA units connected in cascade, wherein the N-stage GOA unit comprises a N-stage stage circuit, a N-stage Q point control circuit, a N-stage P point circuit, a N-stage output circuit and a switch circuit. The switch circuit is connected to the N-stage scan line for sending a turn-on signal to the N-stage scan line before the liquid crystal display device displays an image such that the thin-film transistor in the pixel connected to the N-stage scan line turns on. The disclosure may turn on the gate of each pixel when the display device is waken from the black screen to prevent the electricity leakage when the display device is wakened from the black screen, and may also increase the stability of the circuit.

GOA circuit, driving method thereof and liduid crystal display device

The present invention provides a GOA circuit, comprising a forward-backward scan control module, an output module, an output pull-down module, a node control module, a second node signal input module, a second node signal control module, a voltage stabilizing module and a second capacitor; the forward scan of the circuit is controlled with the ninth and the tenth thin film transistors, and the signal input of the second node is controlled with the first and the eleventh thin film transistors, and the mutual control of the first node and the second node are achieved with the second, the fourth and the fifth thin film transistors, and meanwhile, as the GOA circuit applies to a display of dual side drive interlaced scan structure, the GOA circuits of the two sides can respectively receive four different clock signals to reduce the loading of the signal line of the GOA circuit.

GOA circuit

Disclosed is a GOA driving circuit. In screen awakening stage, the first global control signal (Gas) controls the twelfth thin film transistor (T) to be activated for realizing the All Gate On function, and meanwhile controls the eleventh thin film transistor (T) to be activated to pull down the voltage level of the second node (P(n)); in reset stage, the reset signal (Reset) controls the first thin film transistor (T) to reset the voltage level of the second node (P(n)), and to set the duration of the single pulse of the reset signal (Reset) to be at least the sum of durations of initial pulses of the first, second clock signals; in touch scan stage, the second global control signal (Gas) controls the thirteenth thin film transistor (T) to be activated to make the output ends of the GOA units of the respective stages output composite signals (CS).

GOA driving circuit

Disclosed is a GOA circuit. By locating the thirteenth thin film transistor (T) coupled with the tenth thin film transistor (T) in series and controlled by the Mth clock signal (CK(M)) in the output module () of the nth stage GOA unit, as entering signal interrupt and performing touch scan, the output competition of the output ends (G(n)) can be prevented; by locating the twelfth thin film transistor (T) controlled by the global control signal (Gas) in the output end pull-down module (), and by setting the composite signal (CS) to be the pulse signal consistent with the touch scan signal as entering signal interrupt and performing touch scan, the twelfth thin film transistors (T) of the GOA units of all stages can be activated, and the output ends of the GOA units of all stages outputs the composite signal (CS) consistent with the touch scan signal (TP).

The invention provides a GOA circuit for narrow border LCD panel, by disposing a first node leakage prevention unit () comprised of ninth TFT (T), tenth TFT (T) and third capacitor (C), wherein the ninth TFT (T) has gate and source connected to the output clock signal (CK) to form a diode structure to charge the third capacitor (C) and fourth node (H(n)) to high voltage; the tenth TFT (T) clears the fourth node during stage-propagated signal duration to ensure normal charging for the first node (Q(n)). The GOA circuit is applicable to dual-side progressive scanning architecture and also to dual-side interlaced scanning architecture, and able to prevent current leakage in the first node under dual-side interlaced scanning architecture to ensure stable operation of circuit and improve reliability of GOA circuit. Moreover, with only two clock signals on each side, the invention is suitable for narrow border display panel.

GOA circuit for narrow border LCD panel

A GOA driving circuit, a TFT display panel and a display device are disclosed. The GOA driving circuit includes: an input module configured for outputting first control signals in accordance with the received display scanning signals and the touch scanning signals; an output module configured for outputting the first output control signals in accordance with the first control signals and the first clock signals; a pull-down module configured for outputting pull-down signals in accordance with the first control signals, the second control signals and the low level signals; and a pull-down maintaining module configure for outputting the second output control signals in accordance with the pull-down signals, the high level signals, and the first clock signals. The DC source is adopted to charge/discharge Qn to keep Qn at a reasonable level, and the transfer capability is enhanced. In addition, the forward scanning and the backward scanning may be implemented.

GOA driving circuits, TFT display panels and display devices

The invention discloses a GOA circuit, a display device and a drive method of a GOA circuit, the GOA circuit is set to be GOA units including a plurality of levels, a N leveled GOA unit is applied to charge a N leveled scanning line of a display region of the display device, the N leveled scanning line is connected to a first gate all on signal and a second gate all on signal, which can guarantee scanning lines corresponding to all the GOA units are being charged under control of the first gate all on signal and the second gate all on signal. The invention can carry out an all gate on function according to the method above.

GOA circuit, display device and drive method of GOA circuit

The disclosure discloses a GOA circuit and a liquid crystal display apparatus. The GOA circuit includes a number of GOA unit in cascade connection, wherein the Nth level GOA unit includes a common signal point control module, a gate signal point control module, and a GAS signal operation module; wherein the common signal point control module is used to pull up the electrical level of the common signal point after the period of all gate on; a gate signal point control module is used to pull down the electrical level of a gate signal point after the period of all gate on; the GAS signal operation module is used to achieve the all gate on function by a first GAS signal and a second GAS signal to control the output of the Nth level gate driving signal in the touch panel scanning period.

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Guangdong, China

Yao Yan