WO2023123128A1 - 电源电路及其驱动方法、显示装置 - Google Patents

电源电路及其驱动方法、显示装置 Download PDF

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Publication number
WO2023123128A1
WO2023123128A1 PCT/CN2021/142705 CN2021142705W WO2023123128A1 WO 2023123128 A1 WO2023123128 A1 WO 2023123128A1 CN 2021142705 W CN2021142705 W CN 2021142705W WO 2023123128 A1 WO2023123128 A1 WO 2023123128A1
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WIPO (PCT)
Prior art keywords
circuit
voltage
display panel
power supply
output terminal
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PCT/CN2021/142705
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English (en)
French (fr)
Inventor
杨飞
王糖祥
王雨
陈燚
许静波
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202180004305.8A priority Critical patent/CN116686035A/zh
Priority to PCT/CN2021/142705 priority patent/WO2023123128A1/zh
Publication of WO2023123128A1 publication Critical patent/WO2023123128A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a power circuit, a driving method thereof, and a display device.
  • a power supply circuit which is applied to a display device, wherein the display device includes a display panel and a driving circuit, and the driving circuit is used to provide a gate driving signal to the display panel, based on a display
  • the source drive signal generated by the data is used to input a reset picture to the display panel under the action of the first polarity signal.
  • the power supply circuit includes: a voltage input terminal, a first unidirectional conduction circuit, a storage circuit, and a detection circuit. The voltage input terminal is used to provide a power supply voltage during the power-on phase of the display panel, and to stop supplying power during the power-off phase of the display panel.
  • the first unidirectional conduction circuit is connected between the voltage input terminal and the first output terminal, and is used to transmit the signal of the voltage input terminal to the first output terminal, and is used to block the first
  • the output end transmits a signal to the voltage input end
  • the storage circuit is connected to the first output end for storing the charge of the first output end
  • the detection circuit is connected to the voltage input end and the driving circuit for use in the When the voltage input end is powered off, the first polarity signal is input to the driving circuit.
  • the display device further includes a light-emitting voltage circuit, and the light-emitting voltage circuit is used to provide the display panel with a power supply voltage required by the display panel; the voltage input terminal is also connected to In the light-emitting voltage circuit, the voltage input end is used to provide the light-emitting voltage circuit with the power supply voltage required by the light-emitting voltage circuit.
  • the display device may further include a system circuit for providing the display data to the driving circuit; the voltage input end is connected to the system circuit for A power supply voltage required by the system circuit is supplied to the system circuit.
  • the power supply circuit further includes: a second unidirectional conduction circuit connected between the voltage input end and the second output end for connecting the The signal at the voltage input terminal is transmitted to the second output terminal, and is used to block the transmission of the signal from the second output terminal to the voltage input terminal; wherein, the second output terminal is used to provide the lighting voltage circuit with The power supply voltage required by the lighting voltage circuit.
  • the power supply circuit further includes: a third unidirectional conduction circuit connected between the voltage input end and the third output end for connecting the The signal of the voltage input end is transmitted to the third output end, and is used to block the transmission of the signal from the third output end to the voltage input end; wherein, the third output end is used to provide the system circuit with the The power supply voltage required by the system circuit described above.
  • the display device may further include a system circuit for providing the display data to the driving circuit; the voltage input end is connected to the system circuit for A power supply voltage required by the system circuit is supplied to the system circuit.
  • the power supply circuit also includes: a second unidirectional conduction circuit, a third unidirectional conduction circuit, the second unidirectional conduction circuit is connected between the voltage input terminal and the second output terminal, and is used to connect the voltage input terminal a signal is transmitted to the second output terminal, and is used to block the transmission of the signal from the second output terminal to the voltage input terminal, wherein the second output terminal is used to provide the lighting voltage circuit with the lighting The supply voltage required by the voltage circuit.
  • the third one-way conduction circuit is connected between the voltage input terminal and the third output terminal, and is used to transmit the signal of the voltage input terminal to the third output terminal, and is used to block the third output terminal A signal is transmitted to the voltage input terminal, wherein the third output terminal is used to provide the system circuit with a power supply voltage required by the system circuit.
  • the first unidirectional conduction circuit includes: at least one first diode, at least one second diode, and at least one third diode.
  • At least one of the first diodes is connected in series between the voltage input terminal and the first output terminal, the voltage input terminal is connected to the anode of the first diode, and the first output terminal is connected to the The cathode of the first diode; at least one second diode is connected in series between the voltage input terminal and the second output terminal, and the voltage input terminal is connected to the anode of the second diode , the second output terminal is connected to the cathode of the second diode; at least one third diode is connected in series between the voltage input terminal and the third output terminal, and the voltage input terminal is connected to The anode of the third diode, the third output terminal is connected to the cathode of the third diode.
  • the numbers of the first diodes, the second diodes, and the third diodes are the same; or, the first diodes, the second diodes, and the third diodes The number of three diodes is not exactly the same.
  • the storage circuit includes: a capacitor connected to the first output terminal.
  • the detection circuit includes: a first resistor and a second resistor, the first resistor is connected between the voltage input terminal and the first node; the second resistor is connected to the first Between the node and the ground terminal; wherein, the first node is used to provide the first polarity signal to the driving circuit.
  • the reset picture is a black picture.
  • the voltages of the source driving signals corresponding to the sub-pixels in the reset frame are all equal.
  • the voltages of the source driving signals corresponding to each sub-pixel in the reset frame are all zero.
  • a power circuit driving method for driving the above power circuit wherein the driving method includes:
  • the display panel During the power-on phase of the display panel, supplying a power supply voltage to the voltage input terminal, the display panel displays normally under the action of the driving circuit;
  • the supply of power supply voltage to the voltage input end is stopped, the detection circuit inputs the first polarity signal to the driving circuit, and the driving circuit stores the first polarity signal in the storage circuit in the
  • the reset image is input to the display panel under the action of the voltage of the first output terminal.
  • the driving method when the voltage input terminal is connected to a system circuit and a light-emitting voltage circuit in a display device, the driving method includes:
  • the power supply voltage is provided to the voltage input terminal, the system circuit provides the display data to the drive circuit, and the light-emitting voltage circuit provides the display panel with the power required by the display panel. power supply voltage;
  • the system circuit stops providing the display data to the drive circuit, and the light-emitting voltage circuit stops providing the display panel to the display panel.
  • the power supply voltage required by the panel stop supplying the power supply voltage to the voltage input terminal.
  • a display device including: a display panel, a driving circuit, and the above-mentioned power supply circuit.
  • the drive circuit is used to provide the display panel with a gate drive signal and a source drive signal generated based on the display data, and is used to input a reset picture to the display panel under the action of the first polarity signal.
  • the display device further includes: a light emitting voltage circuit and a system circuit, the light emitting voltage circuit is used to provide the display panel with a power supply voltage required by the display panel; the system The circuit is used for providing display data to the driving circuit, and the driving circuit is used for providing the source driving signal to the display panel according to the display data.
  • a display device wherein the display device includes: a display panel, a drive circuit, and a power supply circuit, and the drive circuit is used to provide a gate drive signal to the display panel, and a gate drive signal generated based on display data.
  • the source drive signal is used to input a reset picture to the display panel under the action of the first polarity signal;
  • the power supply circuit is used to provide a power supply voltage to the drive circuit during the start-up phase of the display panel, and is used to provide a power supply voltage to the display panel
  • the first polarity signal is provided to the driving circuit, and is used to supply the power supply voltage to the driving circuit within a preset time period after the display panel is powered off.
  • the display device further includes: a light emitting voltage circuit and a system circuit, the light emitting voltage circuit is used to provide the display panel with a power supply voltage required by the display panel; the system The circuit is used for providing display data to the driving circuit, and the driving circuit is used for providing the source driving signal to the display panel according to the display data.
  • the power supply circuit is also used to provide a power supply voltage to the light-emitting voltage circuit during the power-on phase of the display panel, and stop supplying power supply voltage to the light-emitting voltage circuit during the power-off phase of the display panel; the power supply circuit is also used to supplying the power supply voltage to the system circuit during the power-on stage of the display panel, and stopping supplying the power supply voltage to the system circuit during the power-off stage of the display panel.
  • FIG. 1 is a schematic structural diagram of a pixel driving circuit in a display panel of the present disclosure
  • FIG. 2 is a schematic structural diagram of a display device in the related art
  • FIG. 3 is a schematic structural diagram of an exemplary embodiment of a display device of the present disclosure.
  • FIG. 4 is a schematic structural diagram of another exemplary embodiment of a display device of the present disclosure.
  • FIG. 5 is a timing diagram of some nodes during the driving process of the display device shown in FIG. 4;
  • FIG. 6 is a schematic structural diagram of another exemplary embodiment of a display device of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another exemplary embodiment of a display device of the present disclosure.
  • Fig. 8 is a partial structural schematic diagram of another exemplary embodiment of a display device of the present disclosure.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
  • the same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
  • the pixel driving circuit is used to drive the light emitting unit OLED in the display panel to emit light, and the light emitting unit OLED is connected between the second pole of the driving transistor DT and the second power supply terminal VSS.
  • the switching transistor T1 and the driving transistor DT may be N-type transistors.
  • the driving method of the pixel driving circuit may include a data writing phase and a light emitting phase.
  • the gate driving signal on the gate driving signal terminal Gate is at a high level, and the switching transistor T1 is turned on to transmit the data signal
  • the source driving signal on the terminal Da is transmitted to the gate of the driving transistor DT; in the light-emitting stage, the switching transistor T1 is turned off, and the driving transistor DT provides a driving current to the light-emitting unit OLED under the action of its gate voltage, and the light-emitting unit OLED emits light.
  • FIG. 2 it is a schematic structural diagram of a display device in the related art.
  • the display device includes a power board 1 , a system circuit 2 , a display module 3 and a lighting voltage circuit 4 .
  • the power board 1 can provide the system circuit 2 , the display module 3 , and the light-emitting voltage circuit 4 with their respective required power supply voltages.
  • the display module 3 may include a display panel and a driving circuit.
  • the system circuit 2 may provide display data to the driving circuit according to the display screen to be displayed, and the driving circuit may provide source driving signals and corresponding gate driving signals to the display panel according to the display data.
  • the light emitting voltage circuit 4 can provide a power supply voltage to the display panel, that is, the light emitting voltage circuit 4 can provide the first power supply terminal VDD in FIG. 1 to the pixel driving circuit in the display panel.
  • the power board 1 stops supplying power supply voltage to the system circuit 2 , the display module 3 , and the lighting voltage circuit 4 .
  • the source driving signal remains in the gate of the driving transistor in the pixel driving circuit.
  • the threshold value of the drive transistor will drift under the long-term action of the source drive signal, which will cause display problems such as afterimages when the display panel is turned on next time.
  • FIG. 3 is a schematic structural diagram of an exemplary embodiment of a display device of the present disclosure.
  • the display device may include: a display panel 31, a driving circuit 32, and a power supply circuit 5.
  • the driving circuit 32 is used to provide the display panel 31 with a gate driving signal and a source driving signal generated based on display data, and for Under the action of a polarity signal, a reset image is input to the display panel 31;
  • the power supply circuit 5 is used to provide a power supply voltage to the driving circuit 32 during the power-on phase of the display panel, and to provide power to the driving circuit 32 during the power-off phase of the display panel 31.
  • the circuit 32 provides the first polarity signal, and is used for supplying the power supply voltage to the driving circuit 32 within a preset time period after the display panel is turned off.
  • the shutdown stage of the display panel is the period of stopping supplying the power supply voltage to the display panel, that is, the period of stopping supplying the power supply voltage to the first power supply terminal in the pixel driving circuit;
  • the period of time is the period during which the power supply voltage is supplied to the first power supply terminal in the pixel driving circuit.
  • the pixel driving circuit in the display panel can normally display images under the action of the gate driving signal and the source driving signal provided by the driving circuit 32 .
  • the driving circuit 32 can provide a reset picture to the display panel, and the voltage of the source driving signal corresponding to each sub-pixel unit in the reset picture can be zero, so that the reset signal
  • the gate voltage of the driving transistor in each pixel driving circuit can be cleared, thereby avoiding the threshold shift of the driving transistor and improving the display effect of the display panel.
  • the voltage of the source drive signal corresponding to each sub-pixel unit in the reset frame may also be other values, when the voltage of the source drive signal corresponding to each sub-pixel unit in the reset frame When they are equal, each driving transistor can be guaranteed to have the same degree of threshold shift, so that the display effect of the display panel can also be improved to a certain extent.
  • the reset screen is a black screen
  • the display panel can display a black screen under the action of residual charge on the power line after shutdown, thereby realizing a black screen after shutdown.
  • the power line is used to provide a power supply voltage to each pixel driving circuit in the display panel, for example, the power line may be used to provide a high-level power supply voltage to the first power supply terminal in FIG. 1 .
  • the pixel driving circuit in the display device of the present disclosure can be shown in FIG. 1 , when the voltage of the source driving signal corresponding to each sub-pixel unit in the reset picture is zero, the reset picture is also a black picture. It should be understood that, in other exemplary embodiments, the pixel driving circuit in the display device may also have other structures, for example, 7T1C, 8T1C, etc., and correspondingly, the driving transistor may also be a P-type transistor.
  • the driving circuit 32 may include multiple circuits for driving the display panel to display normally.
  • the driving circuit 32 may include a source driving circuit, a gate driving circuit, a gamma circuit, etc., and the driving circuit 32 may Provide the required power supply voltage to the source drive circuit, gate drive circuit, and gamma circuit.
  • the driving circuit 32 can be integrated into the timing controller (TCOM) in the display device, and the logic function of the driving circuit 32 inputting the reset picture to the display panel 31 under the action of the first polarity signal can be through the programmable logic gate array on the timing controller Implement programming.
  • the power supply circuit 5 may include: a voltage input terminal INPUT, a first unidirectional conduction circuit 51 , a storage circuit 52 , and a detection circuit 53 .
  • the voltage input terminal INPUT is used to provide a power supply voltage during the power-on phase of the display panel, and to stop supplying the power supply voltage during the power-off phase of the display panel;
  • the first unidirectional conduction circuit 51 is connected to the voltage input terminal INPUT and the first output terminal Between OUT1, used to transmit the signal of the voltage input terminal INPUT to the first output terminal OUT1, and used to block the transmission of signals from the first output terminal OUT1 to the voltage input terminal INPUT; storage circuit 52 connected to the first output terminal OUT1 for storing the charge of the first output terminal OUT1;
  • the detection circuit 53 is connected to the voltage input terminal INPUT and the drive circuit 32 for when the voltage input terminal INPUT is powered off , inputting the first polarity signal to the driving circuit 32 .
  • the first unidirectional conduction circuit 51 may include a first diode D1, the anode of the first diode D1 is connected to the voltage input terminal INPUT, and the cathode is connected to the first output terminal OUT1 .
  • the storage circuit 52 may include: a capacitor C, one electrode of the capacitor C is connected to the first output terminal OUT, and the other electrode of the capacitor C may be connected to the ground terminal GND.
  • the detection circuit 53 may include: a first resistor R1 and a second resistor R2, the first resistor R1 is connected between the voltage input terminal INPUT and the first node N1; the second resistor R2 is connected to the first node N1 and the ground terminal GND; wherein, the first node N1 is used to provide the driving circuit 32 with the first polarity signal.
  • the first polarity signal may be a low level signal.
  • the power supply circuit may further include a power supply board, which may be used to provide a power supply voltage to the voltage input terminal INPUT.
  • FIG. 5 it is a timing diagram of some nodes in the driving process of the display device shown in FIG. 4 .
  • INPUT represents the timing diagram of the voltage input terminal
  • OUT1 represents the timing diagram of the first output terminal.
  • a power supply voltage may be provided to the voltage input terminal INPUT, and the voltage input terminal INPUT provides the required power supply voltage to the driving circuit 32 through the first diode D1, so that the display panel 31 It can be displayed normally under the action of the drive circuit 32; in the shutdown phase t2 of the display panel, the supply of power supply voltage to the voltage input terminal INPUT can be stopped, and the voltage input terminal INPUT is quickly powered down to a low level. At this time, The voltage of the first node N1 is also quickly conducted to a low level, and the first node N1 provides a low level first polarity signal to the driving circuit 32 .
  • the driving circuit 32 provides a reset image to the display panel 31 under the action of the high level of the first output terminal OUT1, so as to reset the gates of the driving transistors in the display panel.
  • the larger the capacitance value of the capacitor C is the longer the first output terminal OUT1 maintains a high level after the display panel is turned off, and the more frames the drive circuit can input a reset image to the display panel.
  • the driving circuit 32 can provide at least two frames of reset images to the display panel 31 under the action of the voltage stored in the capacitor C. It should be understood that, in other exemplary embodiments, the driving circuit 32 may also provide a frame of reset images to the display panel 31 under the action of the voltage stored in the capacitor C.
  • the first unidirectional conduction circuit 51 may include a plurality of first diodes D1 connected in series between the voltage input terminal INPUT and the first output terminal OUT, the voltage input terminal INPUT is connected to the anode of the first diode D1 at the first end, and the first diode D1 is connected to the voltage input terminal INPUT.
  • An output terminal OUT is connected to the cathode of the first diode D1 at the tail end.
  • the series connection of multiple diodes can be understood as that multiple diodes are connected in sequence, and the anodes and cathodes of adjacent diodes are connected.
  • the voltage of the first output terminal OUT1 can be adjusted by adjusting the number of the first diodes.
  • the detection circuit 53 can also be realized by a voltage detection chip 531 .
  • the voltage detection chip 531 has the function of outputting high and low levels according to the voltage polarity.
  • FIG. 7 it is a schematic structural diagram of another exemplary embodiment of a display device of the present disclosure.
  • the display device also includes: a light-emitting voltage circuit 4 and a system circuit 2, the light-emitting voltage circuit 4 is used to provide the display panel with the power supply voltage required by the display panel; the system circuit 2 is used to provide the display panel with The driving circuit 32 provides display data, and the driving circuit 32 is used for providing the source driving signal to the display panel by using the gamma circuit and the source driving circuit therein according to the display data.
  • the power supply circuit 5 is also used to provide a power supply voltage to the light-emitting voltage circuit 4 during the power-on phase of the display panel, and stop supplying power supply voltage to the light-emitting voltage circuit 4 during the power-off phase of the display panel; 5 is also used for supplying the power supply voltage to the system circuit 2 when the display panel is turned on, and stopping supplying the power supply voltage to the system circuit 2 when the display panel is turned off.
  • one power supply circuit 5 provides the required power supply voltages to the light-emitting voltage circuit 4 , the drive circuit 32 and the system circuit 2 , thereby reducing the cost of the display device. It should be understood that, in other exemplary embodiments, different power supply circuits may also provide power supply voltages to the lighting voltage circuit 4, the driving circuit 32, and the system circuit 2.
  • FIG. 8 it is a partial structural schematic diagram of another exemplary embodiment of a display device of the present disclosure.
  • FIG. 8 does not show the display panel, and the connection manner and interaction relationship between the display panel and other circuits in the display device shown in FIG. 8 may be the same as that of the display device shown in FIG. 7 .
  • the power supply circuit 5 may further include: a second unidirectional conduction circuit 54 and a third unidirectional conduction circuit 55 .
  • the second unidirectional conduction circuit 54 is connected between the voltage input terminal INPUT and the second output terminal OUT2, and the second unidirectional conduction circuit 54 is used to transmit the signal of the voltage input terminal INPUT to the second output terminal , and is used to block the second output terminal from transmitting signals to the voltage input terminal INPUT; wherein, the second output terminal OUT2 can be used to provide the lighting voltage circuit 4 required by the lighting voltage circuit 4 power supply voltage.
  • the third unidirectional conduction circuit 55 may be connected between the voltage input terminal INPUT and the third output terminal OUT3, and the third unidirectional conduction circuit 55 is used to transmit the signal of the voltage input terminal INPUT to the third output terminal terminal OUT3, and is used to block the third output terminal OUT3 from transmitting signals to the voltage input terminal INPUT; wherein, the third output terminal OUT3 can be used to provide the system circuit 2 with the required supply voltage.
  • the second unidirectional conduction circuit 54 and the third unidirectional conduction circuit 55 can isolate the voltage interference between the first output terminal OUT1, the second output terminal OUT2, and the third output terminal OUT3, thereby improving the power supply.
  • the circuit 5 provides power supply stability to the light emitting voltage circuit 4 , the driving circuit 32 and the system circuit 2 .
  • the second unidirectional conduction circuit 54 may include a second diode D2, the anode of the second diode D2 is connected to the voltage input terminal INPUT, and the cathode is connected to the second output terminal OUT2.
  • the third unidirectional conduction circuit 55 may include a third diode D3, the anode of the third diode D3 is connected to the voltage input terminal INPUT, and the cathode is connected to the third output terminal OUT3.
  • the second unidirectional conduction circuit 54 and the third unidirectional conduction circuit 55 may also have other structures.
  • the second unidirectional conduction circuit 54 may include a plurality of second diodes connected in series between the voltage input terminal INPUT and the second output terminal OUT2 .
  • the voltage input terminal INPUT can be connected to the anode of the second diode at the first end
  • the second output terminal OUT2 can be connected to the cathode of the second diode at the tail end
  • the anode and cathode of the adjacent second diode are connected.
  • the third unidirectional conduction circuit 55 may include a plurality of third diodes connected in series between the voltage input terminal INPUT and the third output terminal OUT3.
  • the voltage input terminal INPUT is connected to the anode of the third diode at the first end
  • the third output terminal OUT3 is connected to the cathode of the third diode at the tail end
  • the anode and cathode of the adjacent third diode are connected.
  • the voltage at the second output terminal can be adjusted by adjusting the number of the second diodes
  • the voltage at the third output terminal can be adjusted by adjusting the number of the third diodes.
  • the number of the first diode, the second diode, and the third diode may be the same, and the first diode, the second diode, and the third diode The numbers may not be exactly the same.
  • the power supply circuit 5 can also adjust the voltages of the first output terminal OUT1, the second output terminal OUT2, and the third output terminal OUT3 in other ways, for example, by The voltage of each output terminal is adjusted by means of series resistance between INPUT and each output terminal.
  • the display device may be a display device such as a desktop monitor or a notebook computer.
  • This exemplary embodiment also provides a power circuit driving method for driving the above power circuit, wherein the driving method includes:
  • the display panel During the power-on phase of the display panel, supplying a power supply voltage to the voltage input terminal, the display panel displays normally under the action of the driving circuit;
  • the supply of power supply voltage to the voltage input end is stopped, the detection circuit inputs the first polarity signal to the driving circuit, and the driving circuit stores the first polarity signal in the storage circuit in the
  • the reset image is input to the display panel under the action of the voltage of the first output terminal.
  • the driving method when the voltage input terminal is connected to the system circuit and the light emitting voltage circuit in the display device, the driving method includes:
  • the power supply voltage is provided to the voltage input terminal, the system circuit provides the display data to the drive circuit, and the light-emitting voltage circuit provides the display panel with the power required by the display panel. power supply voltage;
  • the system circuit stops providing the display data to the drive circuit, and the light-emitting voltage circuit stops providing the display panel to the display panel.
  • the power supply voltage required by the panel stop supplying the power supply voltage to the voltage input terminal.

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Abstract

一种电源电路及其驱动方法、显示装置，电源电路(5)应用于显示装置，显示装置包括显示面板(31)、驱动电路(32)，驱动电路(32)用于向显示面板(31)提供栅极驱动信号、源极驱动信号，以及用于在第一极性信号作用下向显示面板(31)输入复位画面。电源电路(5)包括：电压输入端(INPUT)、第一单向导通电路(51)、存储电路(52)、检测电路(53)，电压输入端(INPUT)用于在显示面板(31)开机阶段提供电源电压，以及在显示面板(31)关机阶段停止提供电源电压；第一单向导通电路(51)连接于电压输入端(INPUT)和第一输出端(OUT1)之间，用于将电压输入端(INPUT)的信号传输到第一输出端(OUT1)，以及用于阻断第一输出端(OUT1)向电压输入端(INPUT)传输信号；存储电路(52)连接于第一输出端(OUT1)，用于存储第一输出端(OUT1)的电荷；检测电路(53)连接电压输入端(INPUT)、驱动电路(32)，用于在电压输入端(INPUT)掉电时，向驱动电路(32)输入第一极性信号。显示装置可以改善残影问题。

Description

电源电路及其驱动方法、显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种电源电路及其驱动方法、显示装置。
背景技术
相关技术中，显示面板在关机时，显示面板上残存的电荷会导致像素驱动电路中驱动晶体管的阈值发生漂移，从而导致残像等显示问题。
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
根据本公开的一个方面，提供一种电源电路，应用于显示装置，其中，所述显示装置包括显示面板、驱动电路，所述驱动电路用于向所述显示面板提供栅极驱动信号、基于显示数据生成的源极驱动信号，以及用于在第一极性信号作用下向显示面板输入复位画面。所述电源电路包括：电压输入端、第一单向导通电路、存储电路、检测电路，电压输入端用于在所述显示面板开机阶段提供电源电压，以及在所述显示面板关机阶段停止提供电源电压；第一单向导通电路连接于所述电压输入端和第一输出端之间，用于将所述电压输入端的信号传输到所述第一输出端，以及用于阻断所述第一输出端向所述电压输入端传输信号；存储电路连接于所述第一输出端，用于存储所述第一输出端的电荷；检测电路连接所述电压输入端、驱动电路，用于在所述电压输入端掉电时，向所述驱动电路输入所述第一极性信号。
本公开一种示例性实施例中，所述显示装置还包括发光电压电路，所述发光电压电路用于向所述显示面板提供所述显示面板所需的电源电压；所述电压输入端还连接所述发光电压电路，所述电压输入端用于向 所述发光电压电路提供所述发光电压电路所需的电源电压。
本公开一种示例性实施例中，所述显示装置还可以包括系统电路，所述系统电路用于向所述驱动电路提供所述显示数据；所述电压输入端连接所述系统电路，用于向所述系统电路提供所述系统电路所需的电源电压。
本公开一种示例性实施例中，所述电源电路还包括：第二单向导通电路，第二单向导通电路连接于所述电压输入端和第二输出端之间，用于将所述电压输入端的信号传输到所述第二输出端，以及用于阻断所述第二输出端向所述电压输入端传输信号；其中，所述第二输出端用于向所述发光电压电路提供所述发光电压电路所需的电源电压。
本公开一种示例性实施例中，所述电源电路还包括：第三单向导通电路，第三单向导通电路连接于所述电压输入端和第三输出端之间，用于将所述电压输入端的信号传输到所述第三输出端，以及用于阻断所述第三输出端向所述电压输入端传输信号；其中，所述第三输出端用于向所述系统电路提供所述系统电路所需的电源电压。
本公开一种示例性实施例中，所述显示装置还可以包括系统电路，所述系统电路用于向所述驱动电路提供所述显示数据；所述电压输入端连接所述系统电路，用于向所述系统电路提供所述系统电路所需的电源电压。所述电源电路还包括：第二单向导通电路、第三单向导通电路，第二单向导通电路连接于所述电压输入端和第二输出端之间，用于将所述电压输入端的信号传输到所述第二输出端，以及用于阻断所述第二输出端向所述电压输入端传输信号，其中，所述第二输出端用于向所述发光电压电路提供所述发光电压电路所需的电源电压。第三单向导通电路连接于所述电压输入端和第三输出端之间，用于将所述电压输入端的信号传输到所述第三输出端，以及用于阻断所述第三输出端向所述电压输入端传输信号，其中，所述第三输出端用于向所述系统电路提供所述系统电路所需的电源电压。所述第一单向导通电路包括：至少一个第一二极管、至少一个第二二极管、至少一个第三二极管。至少一个所述第一二极管串联于所述电压输入端和所述第一输出端之间，所述电压输入端连接所述第一二极管的阳极，所述第一输出端连接所述第一二极管的阴 极；至少一个所述第二二极管串联于所述电压输入端和所述第二输出端之间，所述电压输入端连接所述第二二极管的阳极，所述第二输出端连接所述第二二极管的阴极；至少一个所述第三二极管串联于所述电压输入端和所述第三输出端之间，所述电压输入端连接所述第三二极管的阳极，所述第三输出端连接所述第三二极管的阴极。
本公开一种示例性实施例中，所述第一二极管、第二二极管、第三二极管的数量相同；或，所述第一二极管、第二二极管、第三二极管的数量不完全相同。
本公开一种示例性实施例中，所述存储电路包括：电容，电容连接于所述第一输出端。
本公开一种示例性实施例中，所述检测电路包括：第一电阻、第二电阻，第一电阻连接于所述电压输入端和第一节点之间；第二电阻连接于所述第一节点和接地端之间；其中，所述第一节点用于向所述驱动电路提供所述第一极性信号。
本公开一种示例性实施例中，所述复位画面为黑画面。
本公开一种示例性实施例中，所述复位画面中各个子像素对应的源极驱动信号的电压均相等。
本公开一种示例性实施例中，所述复位画面中各个子像素对应的源极驱动信号的电压均为零。
根据本公开的一个方面，提供一种电源电路驱动方法，用于驱动上述的电源电路，其中，所述驱动方法包括：
在所述显示面板开机阶段，向所述电压输入端提供电源电压，所述显示面板在所述驱动电路作用下正常显示；
在所述显示面板关机阶段，停止向所述电压输入端提供电源电压，所述检测电路向所述驱动电路输入所述第一极性信号，所述驱动电路在所述存储电路存储于所述第一输出端的电压作用下向显示面板输入复位画面。
本公开一种示例性实施例中，当所述电压输入端连接显示装置中的系统电路和发光电压电路时，所述驱动方法包括：
在所述显示面板开机阶段，向所述电压输入端提供电源电压，所述 系统电路向所述驱动电路提供所述显示数据，所述发光电压电路向所述显示面板提供所述显示面板所需的电源电压；
在所述显示面板关机阶段，停止向所述电压输入端提供电源电压，所述系统电路停止向所述驱动电路提供所述显示数据，所述发光电压电路停止向所述显示面板提供所述显示面板所需的电源电压。
根据本公开的一个方面，提供一种显示装置，其中，所述显示装置包括：显示面板、驱动电路、上述的电源电路。述驱动电路用于向显示面板提供栅极驱动信号、基于显示数据生成的源极驱动信号，以及用于在第一极性信号作用下向显示面板输入复位画面。
本公开一种示例性实施例中，所述显示装置还包括：发光电压电路、系统电路，所述发光电压电路用于向所述显示面板提供所述显示面板所需的电源电压；所述系统电路用于向所述驱动电路提供显示数据，所述驱动电路用于根据所述显示数据向所述显示面板提供所述源极驱动信号。
根据本公开的一个方面，提供一种显示装置，其中，所述显示装置包括：显示面板、驱动电路、电源电路，所述驱动电路用于向显示面板提供栅极驱动信号、基于显示数据生成的源极驱动信号，以及用于在第一极性信号作用下向显示面板输入复位画面；电源电路用于在所述显示面板开机阶段向所述驱动电路提供电源电压，用于在所述显示面板关机阶段向所述驱动电路提供所述第一极性信号，以及用于在所述显示面板关机后的预设时长内向所述驱动电路提供电源电压。
本公开一种示例性实施例中，所述显示装置还包括：发光电压电路、系统电路，所述发光电压电路用于向所述显示面板提供所述显示面板所需的电源电压；所述系统电路用于向所述驱动电路提供显示数据，所述驱动电路用于根据所述显示数据向所述显示面板提供所述源极驱动信号。所述电源电路还用于在所述显示面板开机阶段向所述发光电压电路提供电源电压，以及在所述显示面板关机阶段停止向所述发光电压电路提供电源电压；所述电源电路还用于在所述显示面板开机阶段向所述系统电路提供电源电压，以及在所述显示面板关机阶段停止向所述系统电路提供电源电压。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解 释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开一种显示面板中像素驱动电路的结构示意图；
图2为相关技术中显示装置的结构示意图；
图3为本公开显示装置一种示例性实施例的结构示意图；
图4为本公开显示装置另一种示例性实施例的结构示意图；
图5为图4所示显示装置在驱动过程中部分节点的时序图；
图6为本公开显示装置另一种示例性实施例的结构示意图；
图7为本公开显示装置另一种示例性实施例的结构示意图；
图8为本公开显示装置另一种示例性实施例的部分结构示意图。
具体实施方式
现在将参考附图更全面地描述示例实施例。然而，示例实施例能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施例使得本公开将更加全面和完整，并将示例实施例的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。
用语“一个”、“一”、“所述”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等。
如图1所示，为本公开一种显示面板中像素驱动电路的结构示意图，该像素驱动电路包括驱动晶体管DT、开关晶体管T1、电容C，驱动晶体管DT的第一极连接第一电源端VDD，开关晶体管T1的第一极连接数据信号端Da，第二极连接驱动晶体管的栅极，栅极连接栅极驱动信号端Gate， 电容C连接于驱动晶体管DT的栅极和驱动晶体管的第二极之间。该像素驱动电路用于驱动显示面板中的发光单元OLED发光，发光单元OLED连接于驱动晶体管DT第二极和第二电源端VSS之间。其中，开关晶体管T1和驱动晶体管DT可以为N型晶体管。
该像素驱动电路的驱动方法可以包括数据写入阶段和发光阶段，在数据写入阶段，栅极驱动信号端Gate上的栅极驱动信号为高电平，开关晶体管T1导通，以将数据信号端Da上的源极驱动信号传输到驱动晶体管DT的栅极；在发光阶段，开关晶体管T1关断，驱动晶体管DT在其栅极电压作用下向发光单元OLED提供驱动电流，发光单元OLED发光。
如图2所示，为相关技术中显示装置的结构示意图。该显示装置包括电源板1、系统电路2、显示模块3、发光电压电路4。电源板1可以分别向系统电路2、显示模块3、发光电压电路4提供各自所需的电源电压。显示模块3可以包括显示面板和驱动电路，系统电路2可以根据待显示显示画面向驱动电路提供显示数据，驱动电路可以根据显示数据向显示面板提供源极驱动信号，以及相应的栅极驱动信号。发光电压电路4可以向显示面板提供电源电压，即发光电压电路4可以向显示面板中像素驱动电路提供图1中的第一电源端VDD。然而，当显示面板关机时，电源板1停止向系统电路2、显示模块3、发光电压电路4提供电源电压。此时，像素驱动电路中驱动晶体管的栅极中残留有源极驱动信号。驱动晶体管在该源极驱动信号的长时间作用下会发生阈值漂移，从而导致显示面板下次开机时出现残影等显示问题。
基于此，本示例性实施例提供一种显示装置，如图3所示，为本公开显示装置一种示例性实施例的结构示意图。该显示装置可以包括：显示面板31、驱动电路32、电源电路5，所述驱动电路32用于向显示面板31提供栅极驱动信号、基于显示数据生成的源极驱动信号，以及用于在第一极性信号作用下向显示面板31输入复位画面；电源电路5用于在所述显示面板开机阶段向所述驱动电路32提供电源电压，用于在所述显示面板31关机阶段向所述驱动电路32提供所述第一极性信号，以及用于在所述显示面板关机后的预设时长内向所述驱动电路32提供电源电压。
其中，显示面板的关机阶段为停止向显示面板提供电源电压的时段， 即停止向像素驱动电路中第一电源端提供电源电压的时段；相应的，显示面板的开机阶段为向显示面板提供电源电压的时段，即向像素驱动电路中第一电源端提供电源电压的时段。
本示例性实施例中，该显示装置在显示面板的开机阶段，显示面板中的像素驱动电路可以在驱动电路32提供的栅极驱动信号和源极驱动信号作用下正常显示画面。该显示装置在显示面板关机时刻起的预设时长内，驱动电路32可以向显示面板提供复位画面，该复位画面中每个子像素单元对应的源极驱动信号的电压可以为零，从而该复位信号可以对每个像素驱动电路中驱动晶体管的栅极电压进行清零，进而避免了驱动晶体管的阈值偏移，提高了显示面板的显示效果。
应该理解的是，在其他示例性实施例中，复位画面中每个子像素单元对应的源极驱动信号的电压还可以为其他值，当复位画面中每个子像素单元对应的源极驱动信号的电压相等时，可以保证每个驱动晶体管具有相同的阈值漂移程度，从而也可以在一定程度上改善显示面板的显示效果。此外，当复位画面为黑画面时，显示面板在关机后可以在电源线上残留电荷的作用下显示黑画面，从而实现关机黑画面。其中，电源线用于向显示面板中的各个像素驱动电路提供电源电压，例如，电源线可以用于向图1中第一电源端提供高电平的电源电压。
需要说明的是，本公开显示装置中的像素驱动电路可以如图1所示，该复位画面中每个子像素单元对应的源极驱动信号的电压为零时，该复位画面同时为黑画面。应该理解的是，在其他示例性实施例中，该显示装置中的像素驱动电路还可以为其他结构，例如，7T1C、8T1C等，相应的，驱动晶体管也可以为P型晶体管。
本示例性实施例中，驱动电路32可以包括用于驱动显示面板正常显示的多个电路，例如，驱动电路32可以包括源极驱动电路、栅极驱动电路、伽马电路等，驱动电路32可以向源极驱动电路、栅极驱动电路、伽马电路提供其所需的电源电压。驱动电路32可以集成于显示装置中的时序控制器(TCOM)，驱动电路32在第一极性信号作用下向显示面板31输入复位画面的逻辑功能可以通过对时序控制器上可编程逻辑门阵列进行编程实现。
如图4所示，为本公开显示装置另一种示例性实施例的结构示意图。所述电源电路5可以包括：电压输入端INPUT、第一单向导通电路51、存储电路52、检测电路53。电压输入端INPUT用于在所述显示面板开机阶段提供电源电压，以及在所述显示面板关机阶段停止提供电源电压；第一单向导通电路51连接于所述电压输入端INPUT和第一输出端OUT1之间，用于将所述电压输入端INPUT的信号传输到所述第一输出端OUT1，以及用于阻断所述第一输出端OUT1向所述电压输入端INPUT传输信号；存储电路52连接于所述第一输出端OUT1，用于存储所述第一输出端OUT1的电荷；检测电路53连接所述电压输入端INPUT、驱动电路32，用于在所述电压输入端INPUT掉电时，向所述驱动电路32输入所述第一极性信号。
本示例性实施例中，如图4所示，第一单向导通电路51可以包括第一二极管D1，第一二极管D1的阳极连接电压输入端INPUT，阴极连接第一输出端OUT1。所述存储电路52可以包括：电容C，电容C的一电极连接于所述第一输出端OUT，另一电极可以连接于接地端GND。所述检测电路53可以包括：第一电阻R1、第二电阻R2，第一电阻R1连接于所述电压输入端INPUT和第一节点N1之间；第二电阻R2连接于所述第一节点N1和接地端GND之间；其中，所述第一节点N1用于向所述驱动电路32提供所述第一极性信号。该第一极性信号可以为低电平信号。
该电源电路还可以包括电源板，电源板可以用于向电压输入端INPUT提供电源电压。
本示例性实施例中，如图5所示，为图4所示显示装置在驱动过程中部分节点的时序图。其中，INPUT表示电压输入端的时序图，OUT1表示第一输出端的时序图。在所述显示面板开机阶段t1，可以向所述电压输入端INPUT提供电源电压，电压输入端INPUT通过第一二极管D1向驱动电路32提供其所需的电源电压，从而所述显示面板31可以在所述驱动电路32的作用下正常显示；在所述显示面板关机阶段t2，可以停止向所述电压输入端INPUT提供电源电压，电压输入端INPUT迅速掉电为低电平，此时，第一节点N1的电压同样迅速导电为低电平，第一节点N1向驱动电路32提供低电平的第一极性信号。第一输出端OUT1在电容C作用下 维持一定时长的高电平。驱动电路32在第一输出端OUT1高电平作用下向显示面板31提供复位画面，以对显示面板中驱动晶体管的栅极进行复位。其中，电容C的电容值越大，显示面板关机后第一输出端OUT1维持高电平的时长越长，驱动电路可以向显示面板输入复位画面的帧数越多，本示例性实施例中，驱动电路32可以在电容C存储的电压作用下向显示面板31提供至少两帧的复位画面。应该理解的是，在其他示例性实施例中，驱动电路32也可以在电容C存储的电压作用下向显示面板31提供一帧复位画面。
应该理解的是，在其他示例性实施例中，第一单向导通电路51、存储电路52、检测电路53还可以有其他结构。例如，如图6所示，为本公开显示装置另一种示例性实施例的结构示意图。第一单向导通电路51可以包括串联于电压输入端INPUT和第一输出端OUT之间的多个第一二极管D1，电压输入端INPUT连接首端第一二极管D1的阳极，第一输出端OUT连接尾端第一二极管D1的阴极。多个二极管串联可以理解为，多个二极管依次连接，且相邻二极管阳极和阴极连接。该示例性实施例可以通过调节第一二极管的个数调节第一输出端OUT1的电压。检测电路53还可以通过电压检测芯片531实现。电压检测芯片531具有根据电压极性输出高低电平的功能。
本示例性实施例中，如图7所示，为本公开显示装置另一种示例性实施例的结构示意图。所述显示装置还包括：发光电压电路4、系统电路2，所述发光电压电路4用于向所述显示面板提供所述显示面板所需的电源电压；所述系统电路2用于向所述驱动电路32提供显示数据，所述驱动电路32用于根据所述显示数据利用其中的伽马电路和源极驱动电路向所述显示面板提供所述源极驱动信号。所述电源电路5还用于在所述显示面板开机阶段向所述发光电压电路4提供电源电压，以及在所述显示面板关机阶段停止向所述发光电压电路4提供电源电压；所述电源电路5还用于在所述显示面板开机阶段向所述系统电路2提供电源电压，以及在所述显示面板关机阶段停止向所述系统电路2提供电源电压。本示例性实施例通过一个电源电路5向发光电压电路4、驱动电路32、系统电路2提供各自所需的电源电压，从而可以降低显示装置的成本。应该理解的是，在其他示 例性实施例中，还可以通过不同的电源电路向发光电压电路4、驱动电路32、系统电路2提供电源电压。
本示例性实施例中，如图8所示，为本公开显示装置另一种示例性实施例的部分结构示意图。图8未示出显示面板，图8所示显示装置中显示面板与其他电路的连接方式和相互作用关系可以与图7所示的显示装置相同。其中，电源电路5还可以包括：第二单向导通电路54、第三单向导通电路55。第二单向导通电路54连接于所述电压输入端INPUT和第二输出端OUT2之间，第二单向导通电路54用于将所述电压输入端INPUT的信号传输到所述第二输出端，以及用于阻断所述第二输出端向所述电压输入端INPUT传输信号；其中，所述第二输出端OUT2可以用于向所述发光电压电路4提供所述发光电压电路4所需的电源电压。第三单向导通电路55可以连接于所述电压输入端INPUT和第三输出端OUT3之间，第三单向导通电路55用于将所述电压输入端INPUT的信号传输到所述第三输出端OUT3，以及用于阻断所述第三输出端OUT3向所述电压输入端INPUT传输信号；其中，所述第三输出端OUT3可以用于向所述系统电路2提供所述系统电路2所需的电源电压。
本示例性实施例中，第二单向导通电路54、第三单向导通电路55可以隔断第一输出端OUT1、第二输出端OUT2、第三输出端OUT3之间的电压干扰，从而提高电源电路5向发光电压电路4、驱动电路32、系统电路2提供电源的稳定性。
如图8所示，第二单向导通电路54可以包括第二二极管D2，第二二极管D2的阳极连接电压输入端INPUT，阴极连接第二输出端OUT2。第三单向导通电路55可以包括第三二极管D3，第三二极管D3的阳极连接电压输入端INPUT，阴极连接第三输出端OUT3。
应该理解的是，在其他示例性实施例中，第二单向导通电路54和第三单向导通电路55还可以有其他结构。例如，第二单向导通电路54可以包括串联于电压输入端INPUT和第二输出端OUT2之间的多个第二二极管。电压输入端INPUT可以连接首端第二二极管的阳极，第二输出端OUT2可以连接尾端第二二极管的阴极，相邻第二二极管的阳极和阴极连接。第三单向导通电路55可以包括串联于电压输入端INPUT和第三输出 端OUT3之间的多个第三二极管。电压输入端INPUT连接首端第三二极管的阳极，第三输出端OUT3连接尾端第三二极管的阴极，相邻第三二极管的阳极和阴极连接。该示例性实施例可以通过调节第二二极管的个数调节第二输出端的电压，以及通过调节第三二极管的个数调节第三输出端的电压。本示例性实施例中，所述第一二极管、第二二极管、第三二极管的数量可以相同，所述第一二极管、第二二极管、第三二极管的数量也可以不完全相同。
应该理解的是，在其他示例性实施例中，电源电路5还可以通过其他方式调节第一输出端OUT1、第二输出端OUT2、第三输出端OUT3的电压，例如，可以通过在电压输入端INPUT和各输出端之间串联电阻的方式调节个输出端的电压。
本示例性实施例中，显示装置可以为桌面显示器、笔记本电脑等显示装置。
本示例性实施例还提供一种电源电路驱动方法，用于驱动上述的电源电路，其中，所述驱动方法包括：
在所述显示面板开机阶段，向所述电压输入端提供电源电压，所述显示面板在所述驱动电路作用下正常显示；
在所述显示面板关机阶段，停止向所述电压输入端提供电源电压，所述检测电路向所述驱动电路输入所述第一极性信号，所述驱动电路在所述存储电路存储于所述第一输出端的电压作用下向显示面板输入复位画面。
本示例性实施例中，当所述电压输入端连接显示装置中的系统电路和发光电压电路时，所述驱动方法包括：
在所述显示面板开机阶段，向所述电压输入端提供电源电压，所述系统电路向所述驱动电路提供所述显示数据，所述发光电压电路向所述显示面板提供所述显示面板所需的电源电压；
在所述显示面板关机阶段，停止向所述电压输入端提供电源电压，所述系统电路停止向所述驱动电路提供所述显示数据，所述发光电压电路停止向所述显示面板提供所述显示面板所需的电源电压。
该电源电路驱动方法在上述内容中已经做出详细说明，此处不再赘述。
本领域技术人员在考虑说明书及实践这里公开的内容后，将容易想到 本公开的其他实施例。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限定。

Claims (18)

  1. 一种电源电路，应用于显示装置，其中，所述显示装置包括显示面板、驱动电路，所述驱动电路用于向所述显示面板提供栅极驱动信号、基于显示数据生成的源极驱动信号，以及用于在第一极性信号作用下向显示面板输入复位画面；
    所述电源电路包括：
    电压输入端，用于在所述显示面板开机阶段提供电源电压，以及在所述显示面板关机阶段停止提供电源电压；
    第一单向导通电路，连接于所述电压输入端和第一输出端之间，用于将所述电压输入端的信号传输到所述第一输出端，以及用于阻断所述第一输出端向所述电压输入端传输信号；
    存储电路，连接于所述第一输出端，用于存储所述第一输出端的电荷；
    检测电路，连接所述电压输入端、驱动电路，用于在所述电压输入端掉电时，向所述驱动电路输入所述第一极性信号。
  2. 根据权利要求1所述的电源电路，其中，所述显示装置还包括发光电压电路，所述发光电压电路用于向所述显示面板提供所述显示面板所需的电源电压；
    所述电压输入端还连接所述发光电压电路，所述电压输入端用于向所述发光电压电路提供所述发光电压电路所需的电源电压。
  3. 根据权利要求1所述的电源电路，其中，所述显示装置还可以包括系统电路，所述系统电路用于向所述驱动电路提供所述显示数据；
    所述电压输入端连接所述系统电路，用于向所述系统电路提供所述系统电路所需的电源电压。
  4. 根据权利要求2所述的电源电路，其中，所述电源电路还包括：
    第二单向导通电路，连接于所述电压输入端和第二输出端之间，用于将所述电压输入端的信号传输到所述第二输出端，以及用于阻断所述第二输出端向所述电压输入端传输信号；
    其中，所述第二输出端用于向所述发光电压电路提供所述发光电压电路所需的电源电压。
  5. 根据权利要求3所述的电源电路，其中，所述电源电路还包括：
    第三单向导通电路，连接于所述电压输入端和第三输出端之间，用于将所述电压输入端的信号传输到所述第三输出端，以及用于阻断所述第三输出端向所述电压输入端传输信号；
    其中，所述第三输出端用于向所述系统电路提供所述系统电路所需的电源电压。
  6. 根据权利要求2所述的电源电路，其中，所述显示装置还可以包括系统电路，所述系统电路用于向所述驱动电路提供所述显示数据；
    所述电压输入端连接所述系统电路，用于向所述系统电路提供所述系统电路所需的电源电压；
    所述电源电路还包括：
    第二单向导通电路，连接于所述电压输入端和第二输出端之间，用于将所述电压输入端的信号传输到所述第二输出端，以及用于阻断所述第二输出端向所述电压输入端传输信号；
    其中，所述第二输出端用于向所述发光电压电路提供所述发光电压电路所需的电源电压；
    第三单向导通电路，连接于所述电压输入端和第三输出端之间，用于将所述电压输入端的信号传输到所述第三输出端，以及用于阻断所述第三输出端向所述电压输入端传输信号；
    其中，所述第三输出端用于向所述系统电路提供所述系统电路所需的电源电压；
    所述第一单向导通电路包括：
    至少一个第一二极管，至少一个所述第一二极管串联于所述电压输入端和所述第一输出端之间，所述电压输入端连接所述第一二极管的阳极，所述第一输出端连接所述第一二极管的阴极；
    至少一个第二二极管，至少一个所述第二二极管串联于所述电压输入端和所述第二输出端之间，所述电压输入端连接所述第二二极管的阳极，所述第二输出端连接所述第二二极管的阴极；
    至少一个第三二极管，至少一个所述第三二极管串联于所述电压输入端和所述第三输出端之间，所述电压输入端连接所述第三二极管的阳极，所述第三输出端连接所述第三二极管的阴极。
  7. 根据权利要求6所述的电源电路，其中，所述第一二极管、第二二极管、第三二极管的数量相同；
    或，所述第一二极管、第二二极管、第三二极管的数量不完全相同。
  8. 根据权利要求1所述的电源电路，其中，所述存储电路包括：
    电容，连接于所述第一输出端。
  9. 根据权利要求1所述的电源电路，其中，所述检测电路包括：
    第一电阻，连接于所述电压输入端和第一节点之间；
    第二电阻，连接于所述第一节点和接地端之间；
    其中，所述第一节点用于向所述驱动电路提供所述第一极性信号。
  10. 根据权利要求1所述的电源电路，其中，所述复位画面为黑画面。
  11. 根据权利要求1所述的电源电路，其中，所述复位画面中各个子像素对应的源极驱动信号的电压均相等。
  12. 根据权利要求11所述的电源电路，其中，所述复位画面中各个子像素对应的源极驱动信号的电压均为零。
  13. 一种电源电路驱动方法，用于驱动权利要求1-12任一项所述的电源电路，其中，所述驱动方法包括：
    在所述显示面板开机阶段，向所述电压输入端提供电源电压，所述显示面板在所述驱动电路作用下正常显示；
    在所述显示面板关机阶段，停止向所述电压输入端提供电源电压，所述检测电路向所述驱动电路输入所述第一极性信号，所述驱动电路在所述存储电路存储于所述第一输出端的电压作用下向显示面板输入复位画面。
  14. 根据权利要求13所述的电源电路驱动方法，其中，当所述电压输入端连接显示装置中的系统电路和发光电压电路时，所述驱动方法还包括：
    在所述显示面板开机阶段，向所述电压输入端提供电源电压，所述系统电路向所述驱动电路提供所述显示数据，所述发光电压电路向所述显示面板提供所述显示面板所需的电源电压；
    在所述显示面板关机阶段，停止向所述电压输入端提供电源电压，所述系统电路停止向所述驱动电路提供所述显示数据，所述发光电压电路停止向所述显示面板提供所述显示面板所需的电源电压。
  15. 一种显示装置，其中，所述显示装置包括：
    显示面板；
    驱动电路，所述驱动电路用于向显示面板提供栅极驱动信号、基于显示数据生成的源极驱动信号，以及用于在第一极性信号作用下向显示面板输入复位画面；
    权利要求1-12任一项所述的电源电路。
  16. 根据权利要求15所述的显示装置，其中，所述显示装置还包括：
    发光电压电路，所述发光电压电路用于向所述显示面板提供所述显示面板所需的电源电压；
    系统电路，所述系统电路用于向所述驱动电路提供所述显示数据，所述驱动电路用于根据所述显示数据向所述显示面板提供所述源极驱动信号。
  17. 一种显示装置，其中，所述显示装置包括：
    显示面板；
    驱动电路，所述驱动电路用于向显示面板提供栅极驱动信号、基于显示数据生成的源极驱动信号，以及用于在第一极性信号作用下向显示面板输入复位画面；
    电源电路，用于在所述显示面板开机阶段向所述驱动电路提供电源电压，用于在所述显示面板关机阶段向所述驱动电路提供所述第一极性信号，以及用于在所述显示面板关机后的预设时长内向所述驱动电路提供电源电压。
  18. 根据权利要求17所述的显示装置，其中，所述显示装置还包括：
    发光电压电路，所述发光电压电路用于向所述显示面板提供所述显示面板所需的电源电压；
    系统电路，所述系统电路用于向所述驱动电路提供所述显示数据，所述驱动电路用于根据所述显示数据向所述显示面板提供所述源极驱动信号；
    所述电源电路还用于在所述显示面板开机阶段向所述发光电压电路提供电源电压，以及在所述显示面板关机阶段停止向所述发光电压电路提供电源电压；
    所述电源电路还用于在所述显示面板开机阶段向所述系统电路提供电源电压，以及在所述显示面板关机阶段停止向所述系统电路提供电源电压。
PCT/CN2021/142705 2021-12-29 2021-12-29 电源电路及其驱动方法、显示装置 WO2023123128A1 (zh)

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