Wuhan China Star Optoelectronics Technology Co., Ltd.

Other

Haiming Cao

Chao Tian

Yanqing Guan

Guanghui Liu

Fei Ai

Juncheng Xiao

Zhifu Li

Mingyue Li

Fei AI

Yanquing Guan

An embodiment of the present disclosure is directed to a display panel. The display panel includes a plurality of scan lines and a plurality of forward and reverse scan pull-down circuit. The plurality of scan lines is located on the display area. Each of the forward and reverse scan pull-down circuits includes a forward scan control module, a reverse scan control module, and a pull-down module located on a display area. The pull-down module includes an output terminal and a control terminal coupled to an output terminal of the forward scan control module and an output terminal of the reverse scan control module.

Display panel

The present disclosure provides a display panel and a display device. The display panel includes a plurality of scan lines and at least one pull-down circuit unit. The pull-down circuit includes a forward scan pull-down unit and/or a reverse scan pull-down unit. The forward scan pull-down unit receives a (n+m)scan signal, a first control signal, and a reference low level signal, and is connected to the nscan line. The reverse scan pull-down unit receives a (n−m)scan signal, a second control signal, and the reference low level signal, and is connected to the nscan line.

Display panel and display device

The present application provides a display panel in which transistors in an input pull-up module, a stage transfer output module, and an output pull-up module are provided as P-type low temperature polysilicon thin film transistors, and a transistor in an output pull-down module is provided as an N-type metal oxide thin film transistor.

A gate driving circuit and a display panel are disclosed. A pull-up control module and a pull-down module of each stage gate driving unit are connected to a first node. A thin film transistor in the pull-up control module and/or pull-down module that is connected to the first node is an oxide thin film transistor, such that a leakage current of the first node is reduced due to the advantage of the small off-state leakage current of the oxide thin film transistor. Therefore, the voltage level of the first node can remain stable during a pull-up stage and a touch suspension stage.

Gate driving circuit and display panel

A driving circuit, a driving method thereof, and a display device are provided, including making a first switch connected to a gate of a driving transistor be in a first state during a previous frame, and be in a second state in a current frame, and making a second switch in series with the first switch be in the second state in the previous frame, and be in the first state in the current frame, wherein the first state is one of a conducting-and-cut-off switching state or a constantly conducting state, and the second state is the other of the conducting-and-cut-off switching state or the constantly conducting state.

Driving circuit, driving method thereof, and display device

The present application discloses a gate drive circuit and a display panel. The gate drive circuit includes a plurality of cascaded gate drive units, in which by adopting a same complex clock signal for a pull-down control module, a maintaining module and a pull-down module, a N-th-stage gate drive unit can rapidly pull down a falling edge of a N-th-stage scan signal to the potential of a constant low voltage level signal and effectively reduces the time required to pull down the N-th-stage scan signal from high voltage level to low voltage level.

Gate drive circuit and display panel

A gate drive circuit and a display panel are provided. A pull-up module and a pull-down module of the gate drive circuit output a constant-voltage high potential to a second node, a third node, and a n-th stage gate drive signal through a P-type thin film transistor and output constant-voltage low potential through a N-type thin film transistor to the second node, the third node, and an n-th gate drive signal, thereby improving the stability of the output signal of the thin film transistor connected to the gate drive circuit and the key node.

A pixel driving circuit and a display panel are provided. The pixel driving circuit includes a data writing module, a data conversion module, and a current driving module. The data writing module is electrically connected to a first node and configured to transmit a data signal to the first node. The data conversion module is electrically connected to the first node, a second node, and a modulation signal source, and configured to generate a current driving control signal, and to output the current driving control signal to the second node. The current driving module is electrically connected to the second node, a light-emitting control wire, and a light-emitting device, and configured to control the light-emitting device to emit light. An effective pulse of the current driving control signal has different pulse widths in different gray-scale states.

Pixel driving circuit and display panel

A display panel and a gate driving circuit are provided. The gate driving circuit utilizes the pull-down control module to periodically pull up and pull down the voltage level of the second node. The voltage level of the second node is periodically a high voltage level. This effectively reduces the time duration when the second node corresponds to the high voltage level. After the TFTs electrically connected to the second node are forward biased, the TFTs could have sufficient recovery time. This solution effectively improves the bias condition of the TFTs in the pull-down control module and thus makes the circuit more stable and raises the reliability of the circuit.

The present application provides a pixel driving circuit and a display panel. The pixel driving circuit includes an amplitude regulating module and a pulse width modulation module, where the amplitude regulating module and the pulse width modulation module are both electrically connected to a first node, so that the pulse width modulation module and the amplitude modulation module are configured to cooperate with a first data signal and a second data signal, respectively, to realize regulation of both the pulse width and the amplitude of the valid pulse of the driving current signal for driving the light emitting device to emit light. As such, the valid pulse of the driving current signal has different pulse widths and different amplitudes under correspondingly different gray scale states, so that the light emitting brightness and the light emitting duration of the light emitting device under correspondingly different gray scale states are different.

The present disclosure provides a pixel driving circuit and a display panel. After pre-charging a first node to a first electrical potential, raising it to a second electrical potential through a first capacitor by a current row gate output signal G(n), and then raising it to a third electrical potential which is a high electrical potential greater than an electrical potential of the current row gate output signal G(n), so that a first transistor is turned on and data is written, raising an original electrical potential of a gate and improving driving capability since a gate electrical potential of the first transistor can be raised to greater than the G(n).

Liquid crystal pixel driving circuit solving instability problem during pull-down holding phase

In a GOA circuit provided by the present disclosure, a unidirectional feedback circuit is adopted between a first node and a second node of the GOA circuit of the present disclosure, which can reduce complexity of circuit design, make it easier to achieve linear design and in-plane integration, prevent point competition of the first node and the second node, and improve stability of the circuit.

GOA circuit and display panel

A driving circuit and a display panel are disclosed. The driving circuit includes a plurality of cascaded driving units. The driving unit includes a forward/backward scan control module, a first control node controlling module, a second control node controlling module, a global control module, a regulating module, a first output module configured to output a stage signal, and a second output module configured to output a gate driving signal. A voltage level of the gate driving signal is higher than a voltage level of the stage signal.

Driving circuit and display panel

A gate driving circuit and a display device are provided. The gate driving circuit includes a plurality of gate driving units, each of the gate driving units Each of the stage of the gate driving unit comprises two driving signal output units and a cascading signal output unit. The two driving signal output units can in turn output a constant high voltage signal and a wave signal such that a gate driving circuit could output two driving signals at the same time. In contrast to the conventional art, which needs two gate driving circuits to output two driving signals, this embodiment of the present invention could reduce the number of the clock line and the number of the TFTs such that the display device could have a narrow side frame.

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Hubei, China

Haiming Cao