30results about How to "Eliminate shutdown afterimage" patented technology

The invention provides a display device and a shutdown ghost shadow eliminating method thereof. The display device comprises a substrate, a plurality of scanning lines arranged on the substrate, a plurality of data lines arranged on the substrate and intersecting with the scanning lines to define a plurality of pixel areas, a plurality of active switches arranged on the substrate and located in the pixel areas, and a plurality of control switches arranged on the substrate, wherein the control end of each active switch is coupled with the corresponding scanning line, the first end of each active switch is coupled with the corresponding data line, the second end of each active switch is coupled with a public electrode voltage, the first end of each control switch is coupled with the corresponding data line, the second end of each control switch is coupled with the public electrode voltage, the control end of each control switch is coupled with a grid voltage, and the on-off state of thecontrol switch is adjusted through the voltage difference of the grid voltage and the public electrode voltage.

The application provides a display device and a shutdown driving method thereof. The display device comprises a display panel, a common electrode and a control unit. The display panel includes at least one scan line, at least one data line intersecting with the at least one scan line, and at least one active switch connected with the at least one scan line and the at least one data line. The common electrode is arranged on the display panel and is connected with the at least one active switch, and the common electrode has a common electrode voltage. The control unit has one or more control switches, wherein a first end of the control switch is coupled to the common electrode, a second end is coupled to a discharge module, and a control end is coupled to a switching voltage. The state of the control switch is regulated according to the voltage difference between the switching voltage and the common electrode voltage.

The embodiments of the present disclosure provide a circuit for removing residual image after power-off, a method for driving the circuit, and a display apparatus. The circuit comprises a comparator, a control circuit and an output circuit. The comparator is configured to output a high level voltage when a voltage at its non-inverting terminal is higher than a voltage at its inverting terminal, or output a low level voltage when the input voltage at its non-inverting terminal is lower than or equal to the input voltage at its inverting terminal. The control circuit is configured to align a voltage at the control node with a voltage at the second level terminal when the comparator outputs the high level voltage, and align the voltage at the control node with a voltage at the third level terminal when the comparator outputs the low level voltage. The output circuit is configured to output a voltage of the fourth level terminal at the signal output terminal when the voltage at the control node is the voltage at the third level terminal, and output a voltage of the fifth level terminal at the signal output terminal when the voltage at the control node is the voltage at the second level terminal.

The present application provides a display device and its method for eliminating after-image after shutdown. The display device includes: a display panel; a gamma voltage generation unit electrically coupled to the display panel through a plurality of gamma voltage lines, and the plurality of gamma The voltage circuit includes a black screen control circuit and a grayscale control circuit; a control unit is arranged on the grayscale control circuit and connected to the power supply unit; the power supply unit provides power and transmits control signals to the control unit; wherein, the When the control unit obtains the control signal as the first potential, the control unit switches the line state to form a path between the gamma voltage generating unit and the display panel; the control unit obtains the control signal as the second potential. potential, the control unit switches the line state to form an open circuit of the gray scale control line, the black picture control line is a path, and the gamma voltage generating unit provides a control voltage corresponding to the black picture control line to the A display panel, where the display panel presents a black picture.

The invention discloses a power-off afterimage elimination circuit, a control method thereof, and a liquid crystal display device, which relate to the field of display technology and solve the problem of power-off afterimages caused by insufficient release of charge stored in the liquid crystal display device after shutdown. The main technical solution of the present invention is: comprising: a control module, a charging and discharging module, and a level shifting module; and output the conduction control signal to the charge and discharge module, and output the pull-high control signal to the level conversion module; the charge and discharge module is used to send The level conversion module provides a high-level voltage signal; the level conversion module is used to output a high-level voltage signal to the gate of the thin film transistor in the liquid crystal display device under the control of the pull-up control signal .

The invention relates to a liquid crystal display which can eliminate a power-off remnant shade, which comprises a liquid crystal display panel, a scanning drive circuit and a data drive circuit. Theliquid crystal display panel comprises a pixel array, a short circuit test circuit and a control unit. The scanning drive circuit is used to scan the liquid crystal display panel, and the data drive circuit is used to provide a grey scale voltage for the liquid crystal display panel when the liquid crystal display panel is scanned. The control unit and the short circuit test circuit are formed into a discharge circuit, when the liquid crystal display is powered off, and charge stored inside the liquid crystal display panel is released rapidly through the discharge circuit.

The invention provides a liquid crystal display device, which comprises a scanning drive circuit, an active matrix, a reset circuit and a charging circuit, wherein the scanning drive circuit is used for outputting a first electrical level and a second electrical level; the active matrix includes a plurality of pixel units driven by the first electrical level and the second electrical level, each pixel unit includes a thin film transistor which is turned on when receiving the first electrical level and is turned off when receiving the second electrical level, the charging circuit is used for maintaining the first electrical level after shutdown; and the reset circuit makes all output of the scanning drive circuit select the first electrical level. The liquid crystal display device can quickly and effectively eliminate the remnant shade of the shutdown.

Embodiments of the present disclosure provide a shift register, a gate driving circuit, a display panel and a display apparatus. The shift register comprises an inputting sub-circuit, an outputting sub-circuit, a resetting sub-circuit, and a first discharging controlling sub-circuit. The first discharging controlling sub-circuit is coupled to a first controlling signal inputting terminal, a second controlling signal inputting terminal and a signal outputting terminal, and configured to provide a second controlling signal from the second controlling signal inputting terminal to the signal outputting terminal under a control of a first controlling signal from the first controlling signal inputting terminal. The signal outputting terminal is set to a high level by inputting the first controlling signal and the second controlling signal to the shift register.

The invention discloses a voltage conversion circuit and a display device. The voltage converting circuit includes an inverting unit and a converting unit; the inverting unit is used to output a low voltage according to the first reference signal pulled up to a high potential, the timing signal and the second reference signal of a low potential when the display device is turned off. an inversion signal of a potential; the conversion unit is configured to, according to the inversion signal of a low potential, the first reference signal pulled up to a high potential, the timing signal, and the second reference signal of a low potential, to The GOA unit outputs a high-potential third reference signal, so that the GOA unit controls the pixel drive unit to be turned on, and releases the residual charge on the pixel electrode, thereby eliminating after-image after power-off.

The invention provides a device for eliminating remnant trace, a shift buffer unit, liquid crystal display equipment and a method. By only matching a delay discharge phenomenon of a high voltage source, which is generated by a power supply device in shutting off, the shift buffer unit is driven, any two signal sources in a plurality of signal sources form high quasi-bits so as to control a discharge switch module to charge and discharge pixel units. The invention not only can solve the problem of the remnant trace in shutting off, but also has the signal resetting function in startup.

The invention discloses a circuit for eliminating a shutdown afterimage of a liquid crystal display device and the liquid crystal display device using same. The circuit comprises a controller, a voltage detecting circuit, a voltage output circuit, a power supply management chip, a gate electrode driving chip and a TFT. The drain electrode of the TFT is connected with the input end of the voltage detecting circuit. The output end of the voltage detecting circuit is connected with the input end of the controller. The output end of the controller is connected with the first input end of the voltage output circuit. The second input end of the voltage output circuit is connected with the power supply management chip. The output end of the voltage output circuit is connected with the second input end of the gate electrode driving chip. The power supply management chip is connected with the first input end of the gate electrode driving chip. The output end of the gate electrode driving chip is connected with the gate electrode of the TFT. The voltage detecting circuit detects the drain electrode voltage of the TFT and outputs different detecting signals to the controller according to the magnitude of the drain electrode voltage. The controller makes the voltage output circuit generate different gate electrode starting voltages. Furthermore when the liquid crystal display device is shut down, the controller outputs the gate electrode starting voltage to the gate electrode of the TFT.

An array substrate includes: a scanning driving unit for providing a row scanning signal to a plurality of gate lines, and a data driving unit for providing a data signal to a plurality of data lines, the plurality of gate lines and the plurality of data lines being horizontally and vertically crossed to form an array of pixel units arranged in an matrix form, and further including: a control unit electrically connected with the scanning driving unit and the data driving unit respectively, for controlling the scanning driving unit turn on each of the pixel units when the display device is powered off, such that charges stored in the pixel units are rapidly discharged through the data lines, so as to eliminate the shutdown image sticking of the AMOLED display. There have disclosed also a method for driving array substrate and a display device.