56results about How to "Stable voltage difference" patented technology

The invention discloses a shift register and a driving method thereof, a light-emitting control circuit and a display device. The shift register comprises a coupling control module, an input module, a node control module, a first output module and a second output module, wherein through mutual cooperation of the five modules, signals can be stably output by a simple structure and less signal wires; moreover, through the mutual cooperation of the five modules, the duration of an effective pulse signal in the signals output by a signal output end can be controlled with an only need to change the duration of the effective pulse signal at an input signal end, and the alteration in a circuit and the change in a process do not need to be performed; and thus, the preparation process can be simplified, the production cost is reduced, and the shift register and the driving method thereof, the light-emitting control circuit and the display device are beneficial to implementing a narrow frame design of a panel in the display device.

The invention discloses a shift register unit, a driving method thereof, a grid driving circuit, and a display panel. The shift register unit comprises an input module, a first control module, a second control module, a third control module, a first output module, and a second output module. By adopting cooperation among the input module, the first control module, the second control module, the third control module, the first output module, and the second output module, pull-down time of a driving signal output end is reduced, and the driving capability of the shift register unit is improved, and power consumption is reduced.

An embodiment of the invention discloses a public electrode voltage compensation method and device and a time schedule controller, relates to the field of liquid crystal displays, and can solve the problem of display frame pixel gray scale deviation generated by inversion of positive polarity and negative polarity of gray scale voltage. The public electrode voltage compensation method includes: performing statistics on gray scale data of each pixel of a display frame, calculating gray scale deviation ratio between two adjacent lines of pixels, obtaining public electrode voltage compensation signal parameters according to the gray scale deviation ratio, generating positive and negative polarity information of the public electrode voltage compensation signal parameters according to pixel voltage polarity reversal signals, and generating public polarity voltage compensation control signals according to the public electrode voltage compensation signal parameters and the positive and negative polarity of the public electrode voltage compensation signal parameters so as to enable a public electrode generation unit to generate public electrode input voltage with compensating voltage waveform according to the public polarity voltage compensation control signals.

The invention discloses a shifting register unit, a grid driving circuit and a display device. The shifting register unit comprises an input module, a first control module, a second control module, a third control module, a first output module and a second output module. The above six modules are cooperated with each other, and by adjusting the duration of an effective pulse signal of an input signal end, the duration of a scanning signal output by a driving signal output end can be controlled. The electric potential of the driving signal output end is controlled by a first reference signal end and a second reference signal end, so that the stability of the driving signal output end can be improved. Compared with the prior art that the duration of the scanning signal output by the driving signal output end is controlled through the grid driving circuit of a complex structure, the difficulty of the grid driving circuit is lowered, and the process complexity is lowered, so that the cost is lowered.

The invention discloses a shifting register, a grid-driven circuit and a display device. The shifting register comprises an input module, a first resetting module, a node control module, a first output module, a second output module and a cutting angle control module, wherein by virtue of setting the cutting angle control module and by virtue of mutual cooperation of the six modules, electric potentials of output scanning signals can change gradually, so that scanning signals with cutting angle waveforms can be formed; when the shifting registers of various grades sequentially input the scanning signals with cutting angle waveforms into pixel units in corresponding rows through grid lines of all the rows, the electrical impedance influence of each pixel unit can be reduced, the waveform stability of the scanning signals supplied to the pixel units in each row can be maintained, and thus the splash screen influence of a display panel is improved.

The invention provides a stepwise utilization method of decommissioned batteries. The stepwise utilization method comprises decommissioned battery sorting, decommissioned battery grouping and formingan energy storage system by the decommissioned batteries. The invention further provides a stepwise utilization system of decommissioned batteries, comprising an energy storage system and an energy management unit for controlling the energy storage system to perform charging and discharging, the energy storage system is composed of a plurality of battery clusters with a working voltage of 570 to 832.2V, and each battery cluster comprises a plurality of battery packs connected in parallel; and each battery pack comprises decommissioned batteries connected in series, a PCS and a monitoring unit.According to the stepwise utilization method and system provided by the invention, the consistency problem of the decommissioned batteries is solved through string distributed architecture, which greatly simplifies the process, can not only refine the management of energy storage batteries, but also can ensure the battery consistency to the greatest extent. In addition, the long-term stable operation of the entire system can be ensured, and the safety and the service life of the energy storage system are also objectively improved; and meanwhile, the stepwise utilization cost is reduced by thestepwise utilization method and system provided by the invention, so that the stepwise utilization method and system provided by the invention can be widely used, promoted and applied.

The invention discloses a shift register and driving method, grid driving circuit and display device thereof provided by an embodiment of the invention. The shift register comprises an input module, a reset module, the first control module, the second control module and an output module; through the coordination of the above modules, the scanning signals used for inputting in the corresponding grid lines can be output through the scanning signal output end by using a simple structure, the cascade signals are output from the output end of the cascaded signal, and the cascade signals are used as the signals of the signal input ends of other cascaded shift registers, so that the cascade signal output end for outputting cascade signals is different from the scanning signal output end for outputting scanning signals, so the signal interference of the scanning signals input in the grid lines to the input signal end of the next shift register can be avoided, so that the stability of the shift register can be improved, and then the overall stability of the circuit formed by cascading the plurality of the shift registers can be improved.

The embodiment od of the invention provides a common electrode driving unit, a liquid crystal display panel and a liquid crystal display device, and the common electrode driving unit is used for providing driving voltage for a common electrode in the liquid crystal display panel. The liquid crystal display panel comprises a pixel electrode and a grid driving unit. The invention is characterized in that: the common electrode driving unit comprises an output unit which is connected between the grid driving unit and the common electrode; the output unit is used for correspondingly outputting a third driving voltage and a fourth driving voltage when the grid driving unit outputs a first driving voltage and a second riving voltage, wherein the second driving voltage is larger than the first driving voltage, and the third driving voltage is larger than the fourth driving voltage; and a first voltage difference and a second voltage difference mutually counteract, wherein the first voltage difference is voltage drop generated when the first driving voltage and the second driving voltage mutually convert on the pixel electrode, and the second voltage difference is the voltage drop generated when the third driving voltage and the fourth driving voltage mutually convert on the pixel electrode. By the invention, a flare phenomenon of a liquid crystal display is eliminated.

The invention discloses a pixel circuit, a driving method of the pixel circuit, an organic electroluminescence display panel and a display device. The pixel circuit comprises a data writing-in module, a power supply voltage control module, a breakover control module, a storage module, a light-emitting control module, a driving transistor and a light-emitting device. Through cooperation of the five modules and the driving transistor, the working current, for driving the light-emitting device to emit light, of the driving transistor in the pixel circuit can be only relevant to the voltage at a data signal end and the voltage of an original signal end and be irrelevant to the threshold voltage of the driving transistor and the voltage of a first power supply end, and it can be avoided that the working current flowing across the light-emitting device is influenced by the threshold voltage of the driving transistor and the IR Drop, so that the working current for driving the light-emitting device to emit light is maintained stable, and then the frame brightness uniformity of a display area in a display device is improved.

The invention discloses a shift register, a grid drive circuit and a display device. The shift register comprises an input module, a first reset module, a first control module, a second control module, a node voltage control module and an output module which are in cooperation; the node voltage control module and the first control module form a bootstrap circuit, allowing the voltage of a second node to be the same with the voltage of the effective pulse signal of a first clock signal terminal; accordingly, the first control module can timely and effectively work under the control of the second node, allowing the driving signal output terminal of the shift register to timely output the scanning signal opposite to the electric potential of the effective pulse signal of an input signal terminal after output, thereby improving the output stability of the shift register, furthermore reducing the noise of the scanning signal outputted by the driving signal output terminal, and making scanning signal output more stable.

The invention discloses a shifting register, a gate driving circuit and a display device. The shifting register comprises an input module, a first reset module, a node control module, a cutting angle control module, a first output module and a second output module, wherein through the setting of the cutting angle control module and the mutual cooperation of the six modules, the potential of a scanning signal output by a driving signal output end can be changed to form a scanning signal with a cutting angle waveform; and when the scanning signal with the cutting angle waveform passes through each gate line in sequence to be input into each pixel unit in the corresponding lines, the leaping voltage <Delta>Vp can be decreased, so that the phenomena such as flicker, residual images and the like of a display panel are improved and the display quality of the display panel is improved.

The invention discloses a shift register, a gate drive circuit and a display panel. The shift register comprises an input module, a rest module, a node control module, a first output module and a second output module. A first direct current signal end and a second direct current signal end are taken as power ends of a drive signal output end, so that compared with an existing shift register adopting a clock signal end as a drive signal output end, the power consumption of the shift register can be reduced, and the output stability of the drive signal output end can be improved.

The invention discloses a shift register and a driving method thereof, a gate driving circuit, and a display device. The shift register comprises an input module, a voltage coupling module, a threshold voltage writing module, a first output module, and a second output module. Through cooperation of the four modules, the voltage of a second node can be compensated, so that the potential of a first node can be kept in a steady state of invalid potential after the shift register outputs an effective pulse signal of a driving signal. Therefore, the output noise at a driving signal output end is reduced, and abnormal display is avoided.

The invention discloses a shifting register, a driving method thereof, a gate drive circuit and a display device. The shifting register comprises an input module, a first control module, a second control module and an output module. With related matching of the four modules, namely, the input module, the first control module, the second control module and the output module, the floating state of a pull-down node can be shortened, and the influence of electric leakage on potential of the pull-down node can be reduced after effective pulse signals of scanning signals are output from a driving signal output end, accordingly, noise of the output scanning signals is reduced, and the output stability of the shifting register is improved.

The invention provides a pixel circuit, a driving method of the pixel circuit, a display panel and a display device. The pixel circuit comprises a data writing module, a compensation control module, a storage module, a luminescence control module, a driver transistor and a luminous device. In the cooperation of the four modules and the driver transistor, a working current used for making the driver transistor drive the luminous device to give out light in the pixel circuit is only correlated with the voltage at the data signal end and the voltage at a reference signal end, and uncorrelated with the threshold voltage of the driver transistor and the voltage of a first power source end so that the working current flowing through the luminous device can be avoided from being affected by the threshold voltage of the driver transistor and IR Drop, accordingly the working current driving the luminous device to give out light keeps stable, and then the uniformity of screen brightness in a display area in the display device can be improved.

The present invention discloses a pixel compensation circuit, a driving method thereof and a display device. The pixel compensation circuit comprises an initialization module, a data writing data, a threshold value compensation module, a voltage input module, a storage voltage division module, a driving transistor and a light-emitting device, wherein by the mutual cooperation of the above five modules and the driving transistor, a driving current that the driving transistor drives the light-emitting device to emit light is irrelevant with a threshold voltage of the driving transistor and the voltage of a first power supply end, and the influence of the threshold voltage of the driving transistor and the IR Drop on the driving current of the light-emitting device can be avoided, so that the driving current can keep stable, and further the uniformity of the picture brightness of a display area in the display device can be improved.

The invention discloses a shift register and a driving method thereof, a grid driving circuit, and a display apparatus. The shift register comprises an input module, a node control module, a first output module and a second output module. The input module controls potential of a first node through an input signal end and a first clock signal end, the node control module controls potential of the first node through a first control signal end and a DC signal end, the first output module controls potential of a driving signal output end through a second control signal end and the DC signal end, and the second output module maintains a stable voltage difference between the first node and the driving signal output end when the first node is at a floating state and controls potential of the driving signal output end through the first node and the second clock signal end. In such a way, through cooperation among the four modules, scanning signals can be output through a simple structure and fewer signal lines, the preparation process is simplified, and the production cost is decreased.

The embodiment of the invention provides a pixel unit, an array substrate, a liquid crystal display panel, a device and a driving method, relates to the technical field of a liquid crystal display, and solves the problems that a display greenish phenomenon and a picture flickering phenomenon exist when the existing liquid crystal display device displays an image. According to the embodiment of the invention, the pixel unit is internally provided with two pixel electrodes and each pixel electrode is respectively controlled by a corresponding thin film transistor, so that a voltage difference between the two pixel electrodes can be used for controlling the deflection of liquid crystal molecules; and influences on voltage on the pixel electrodes of the pixel unit in the array substrate are not caused so that the phenomenon that the display is greenish is avoided. Furthermore, when the pixel unit is closed, the two thin film transistors of the two pixel electrodes are respectively controlled to have the same power leaking capability, so that the voltage difference between the two pixel electrodes keeps stable and the picture flickering phenomenon is prevented.

The invention discloses a pixel circuit, a driving method thereof, an organic electroluminescence display panel and a display device, comprising a data write-in module, a reset module, a first storing module, a second storing module, a light emission control module, a driving transistor and a light emitting device. For the cooperation of the above five modules, the working current of the light emitting device driven by the driving transistor in the pixel circuit can be made relevant only to the voltage of the data signal terminal and the voltage of the reference signal terminal, irrespective of the threshold voltage of the driving transistor. This can avoid the effect of the threshold voltage of the driving transistor on the working current across the light emitting device, thereby stabilizing the working current for driving the light emitting device and improving the brightness uniformity of the display area in the display panel.

The invention discloses a tristate input circuit. In the circuit, the fact that bases and collectors of audions are in short circuit so as to have the characteristics of diodes is utilized, and one input end of two differential amplifiers is biased to two fixed voltages; the voltage D-value between the two fixed voltages is the conduction pressure drop Vbe of the diode; and the characteristic that the differential amplifiers are sensitive to a voltage difference is used to amplify the voltage D-value and output corresponding marking signals as well as detect that the input is in a high level, low level or suspension state, thus realizing the tristate input.

The invention discloses a shift register and a driving method thereof, a gate driving circuit, and a display device. The shift register comprises an input module, a reset module, a node control module, a potential maintenance module, a first output module, and a second output module. Through cooperation of the six modules, the potential maintenance module can keep the potential of a second node to ensure normal output of the second output module, so that the output stability of the shift register is improved, and the output of the driving signal output end is more stable.

The invention discloses a square wave chamfering circuit and a drive method thereof and a display panel. The circuit comprises an input module, an output module , a chamfering control module, a chamfering module and a capacitor module, square wave signals input into the signal input end can form signals in chamfering wave shapes when output to the signal output end through the coordination of the five modules, thus the output signals are changed from rectangular sudden change to slope slow descent, accordingly the adverse influences brought by electrical level sudden change when the square wave signals are changed from a high electrical level to a low electrical level can be reduced, and in this way, when the square wave chamfering circuit is applied to the display panel, the quality of displayed pictures can be improved.

The present invention discloses a shift register, a gate drive circuit and a display device. The shift register comprises an input module, a first output module, a second output module, an output reset module, a node reset module and a capacitor module. By connecting the control end of the output reset module with a second reference voltage signal end, the rising edge time of a second reference voltage signal sent out by the second reference voltage signal end is shorter, so that the output reset module can reset a second signal output end by a smaller device, and by the usage of the smaller device, the power consumption can be reduced, and a narrow frame is conducive to being realized.

The invention discloses a power device of an electric manned aircraft and the electric manned aircraft. The power device comprises a plurality of motor sets and a plurality of battery packs corresponding to the motor sets. One motor group comprises a plurality of motors, one battery pack comprises a plurality of batteries, and each battery in the battery pack is independently connected with the corresponding motor group so as to supply power to the plurality of motors in the motor group. According to the power device of the electric manned aircraft and the electric manned aircraft, the independent batteries in the battery pack are used for supplying power to the multiple motors in the motor set, the electric quantity of the multiple batteries in the battery pack can be balanced, the voltage difference of the multiple batteries is kept relatively stable, and normal and stable operation of the batteries is ensured.

The invention discloses a pixel circuit, a display panel and a display device. The pixel circuit comprises a luminescence data writing module, a color data writing module, a first storage module, a second storage module and a luminescence module, wherein the five modules are mutually cooperated so that one pixel can display different colors, accordingly it is avoided that colors of a plurality of sub pixels are utilized to synthesize the color of one pixel, and the preparation of the highly fine display panel is benefited.

The invention discloses a pixel driving circuit, a driving method, an organic light-emitting display panel and a display device. The pixel driving circuit comprises a data writing module, a memory module, at least one first light emitting device, a first driving module which corresponds to the various first light emitting device one by one, at least one second light emitting device and a second driving module which corresponds to the various second light emitting device one by one, wherein by virtue of the modules which are mutually matched, voltage of node signals can be switched between a positive value and a negative value by virtue of a simple structure, so that performances of the first driving module and the second driving module are recovered, and subsequently, the influence on the stability and the service life of the display panel due to performance offset of the first driving module and the second driving module is relieved.

The present invention discloses a shift register, a gate drive circuit and a display device. The shift register comprises an input module, a clock signal output module, a first output module, a second output and a capacitor module. Through arrangement of the first output module and the second output module, the same shift register can output adjacent two rows of gate drive signals in the gate drive circuit and is controlled to perform switching the sequence of output of the gate drive signals of the Nth row of pixels and gate drive signals of the (N+1)th row of pixels to realize row-by-row output or switching output of the gate circuit so as to realize reduction of the polarity hopping of the input data signals and reduce energy consumption.

The invention discloses a shifting register unit, a drive method of the shifting register unit, a gate drive circuit and a display panel. The shifting register unit comprises an input module, a resetting module, a first control module, a second control module, a first output module and a second output module. Through the match of the six modules, namely, the input module, the resetting module, the first control module, the second control module, the first output module and the second output module, the output of a drive signal output end is realized through the simple structure and few signal lines, thus a preparation process is simplified, and the production cost is reduced.

The invention provides a display device, a pixel driving circuit and a driving method of the display device. According to the invention, a data voltage is supplied to a first electrode of a driving transistor and a storage sub-circuit is charged or discharged. In this way, the voltage difference between a first node and a control electrode of the driving transistor is kept stable when a control electrode of the driving transistor is in a floating connection state. After that, a first voltage signal of a first voltage end is supplied to the control electrode of the driving transistor, and a second voltage signal of a second voltage end or a third voltage signal of a third voltage end is supplied to the first node. A data voltage and a threshold voltage of the driving transistor are writteninto the control electrode of the driving transistor. A second electrode of the driving transistor and a first end of a light-emitting element are turned on. Under the control of a second light-emitting control signal end, the first electrode and the third voltage end of the driving transistor are turned on so as to control a light emitting element to emit the light. In this way, the problem in the prior art that an OLED display picture is abnormal due to the fluctuation of the opening voltage of the transistor is solved in the prior art.

The invention discloses a power supply circuit. The power supply circuit comprises a DC-DC module, an LDO module, a first voltage division circuit, a voltage-controlled constant current source and anamplification circuit. An output end of the DC-DC module is connected with an input end of the LDO module, the input end of the first voltage division circuit is connected with the output end of the DC-DC module, the output end of the first voltage division circuit is connected with a feedback input end of the DC-DC module, and the first voltage division circuit divides a voltage of the input endand outputs the divided voltage from the output end; a first set voltage is input into the input end of the amplification circuit, and the output end of the amplification circuit is connected with anoutput voltage control end of the LDO module; and a first end of the voltage-controlled constant current source inputs a second set voltage, a second end of the voltage-controlled constant current source is connected with the output end of the first voltage division circuit, and the voltage-controlled constant current source controls the current of the second end according to the voltage of the first end. By adjusting input signals of the voltage-controlled constant current source and the amplification circuit, input and output of the LDO module are controlled to have a stable voltage difference, and voltage signals with low power consumption and a low ripple noise are output.