WO2017215048A1 - 一种显示面板的驱动方法及显示面板的驱动装置 - Google Patents

一种显示面板的驱动方法及显示面板的驱动装置 Download PDF

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Publication number
WO2017215048A1
WO2017215048A1 PCT/CN2016/088149 CN2016088149W WO2017215048A1 WO 2017215048 A1 WO2017215048 A1 WO 2017215048A1 CN 2016088149 W CN2016088149 W CN 2016088149W WO 2017215048 A1 WO2017215048 A1 WO 2017215048A1
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Prior art keywords
voltage
frame
driving voltage
display panel
common electrode
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Ceased
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PCT/CN2016/088149
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English (en)
French (fr)
Inventor
姚晓慧
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US15/308,633 priority Critical patent/US20180053485A1/en
Publication of WO2017215048A1 publication Critical patent/WO2017215048A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3674—Details of drivers for scan electrodes
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0278—Details of driving circuits arranged to drive both scan and data electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G09G2310/061—Details of flat display driving waveforms for resetting or blanking

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a driving method of a display panel and a driving device for the display panel.
  • Liquid crystal display device (LCD, Liquid Crystal Display) has the advantages of lightness, shortness, low power consumption and low heat, making liquid crystal display devices stand out among many different types of display devices. Use, such as on modern information devices such as computers, mobile phones, and personal digital assistants.
  • the invention provides a driving method of a display panel and a driving device of the display panel, which can effectively solve the difference in the prior art due to the difference between the pixel electrode and the common electrode during each frame and frame alternate period, with the multi-frame
  • the residual ions gradually move toward the pixel electrode or the common electrode, thereby generating a DC residual phenomenon, causing a technical problem of residual image on the display panel.
  • the driving method of the display panel provided by the present invention includes:
  • the data driving voltage is set to a first driving voltage during a second n+1 frame and frame alternation; and the data is alternated between the 2nth frame and the frame.
  • the driving voltage is set to a second driving voltage; the first driving voltage is greater than a voltage on the common electrode; and the second driving voltage is smaller than a voltage on the common electrode.
  • the voltage difference between the first driving voltage and the voltage on the common electrode is a first voltage difference
  • the second driving voltage is on the common electrode
  • the pressure difference between the voltages is a second pressure difference
  • the sum of the first pressure difference and the second pressure difference is zero.
  • the data driving voltage is set to a first driving voltage during a second nth frame-to-frame alternation; and the data is alternated between the 2n+1th frame and the frame.
  • the driving voltage is set to a second driving voltage; the first driving voltage is greater than a voltage on the common electrode; and the second driving voltage is smaller than a voltage on the common electrode.
  • the voltage difference between the first driving voltage and the voltage on the common electrode is a first voltage difference
  • the second driving voltage is on the common electrode
  • the pressure difference between the voltages is a second pressure difference
  • the sum of the first pressure difference and the second pressure difference is zero.
  • the invention also provides a driving method of a display panel, comprising:
  • the data driving voltage is set to a voltage on the common electrode.
  • the data driving voltage is set to a first driving voltage during a second n+1 frame and frame alternation; and the data is alternated between the 2nth frame and the frame.
  • the driving voltage is set to a second driving voltage; the first driving voltage is greater than a voltage on the common electrode; and the second driving voltage is smaller than a voltage on the common electrode.
  • the voltage difference between the first driving voltage and the voltage on the common electrode is a first voltage difference
  • the second driving voltage is on the common electrode
  • the pressure difference between the voltages is a second pressure difference
  • the sum of the first pressure difference and the second pressure difference is zero.
  • the voltage on the common electrode is constant.
  • the invention also provides a driving device for a display panel, comprising:
  • a scan driving voltage generating module configured to generate a scan driving voltage to each scan line of the display panel during frame-to-frame alternation, and open each thin film transistor of the display panel;
  • a data driving voltage generating module configured to set a data driving voltage according to a voltage on the common electrode
  • a data driving voltage transfer module configured to transmit the data driving voltage to pixel electrodes of each pixel unit of the display panel.
  • the data driving voltage generating module sets the data driving voltage to a voltage on the common electrode.
  • the data driving voltage generating module sets the data driving voltage to a first driving voltage during a second n+1 frame and frame alternation; the data driving voltage The generating module sets the data driving voltage to a second driving voltage during the 2nth frame-to-frame alternation; the first driving voltage is greater than a voltage on the common electrode; and the second driving voltage is smaller than the common The voltage on the electrode.
  • the voltage difference between the first driving voltage and the voltage on the common electrode is a first voltage difference
  • the second driving voltage is on the common electrode
  • the pressure difference between the voltages is a second pressure difference
  • the sum of the first pressure difference and the second pressure difference is zero.
  • the voltage on the common electrode is constant.
  • the driving method of the display panel and the driving device of the display panel provide a scan driving voltage and a data driving voltage to the display panel during the frame and frame alternation, so that the pixel electrode in the display panel There is no pressure difference between the common electrode and the common electrode, and the residual ions do not move to the pixel electrode or the common electrode, so that no DC residual phenomenon occurs, and the phenomenon of residual image on the display panel can be weakened or eliminated.
  • FIG. 1 is a flow chart of a first preferred embodiment of a driving method of a display panel of the present invention
  • FIG. 2 is a timing chart of a scan driving voltage of a driving method of a display panel of the present invention
  • FIG. 3 is a timing chart of data driving voltages of a first preferred embodiment of a driving method of a display panel of the present invention
  • FIG. 4 is a flow chart of a second preferred embodiment of a driving method of a display panel of the present invention.
  • FIG. 5 is a timing chart of data driving voltages of a second preferred embodiment of a driving method of a display panel of the present invention.
  • FIG. 6 is a schematic view of an array substrate preferably implemented by a display panel of the present invention.
  • FIG. 7 is a schematic structural view of a first preferred embodiment of a driving device for a display panel according to the present invention.
  • FIG. 8 is a schematic structural view of a second preferred embodiment of a driving device for a display panel according to the present invention.
  • FIG. 1 is a flow chart of a first preferred embodiment of a driving method of a display panel according to the present invention.
  • Step S101 generating a scan driving voltage to each scan line of the display panel during the frame-to-frame alternation, and opening each thin film transistor of the display panel;
  • Step S102 setting a data driving voltage according to a voltage on the common electrode
  • Step S103 the data driving voltage is transmitted to the pixel electrodes of each pixel unit of the display panel.
  • the driving method of the display panel there are mainly three kinds of voltages, which are a scan driving voltage, a data driving voltage, and a voltage on the common electrode.
  • the scan driving voltage is used to control the opening or closing of the thin film transistor in the pixel unit;
  • the data driving voltage is used to drive the source of the thin film transistor in the pixel unit, and the data driving voltage is transmitted to the pixel electrode through the source and the drain of the thin film transistor.
  • the display panel mainly comprises an array substrate and a color filter substrate disposed opposite to each other and a liquid crystal layer sandwiched between the two plates, and a common electrode is electrically connected on the array substrate and the color filter substrate, and is electrically connected.
  • a common electrode on the array substrate is used to form a storage capacitor with the pixel electrode, and a common electrode on the color filter substrate is used to form a liquid crystal capacitor with the pixel electrode.
  • the voltage on the common electrode is provided by a common electrode voltage module of the display panel, and the common electrode voltage module provides a common electrode voltage when the display panel displays the screen, and the common electrode voltage is a constant value.
  • FIG. 2 is a timing chart of the scan driving voltage of the driving method of the display panel of the present invention.
  • the scanning driving voltage is sequentially supplied from the top to the bottom to the horizontal scanning line 1, the horizontal scanning line 2, the horizontal scanning line 3, ... ..., horizontal scanning line n, thereby completing scanning of one frame of picture, that is, from the corresponding thin film transistor on the first scanning line to the corresponding thin film transistor on the last scanning line is turned off, this time is called a frame period.
  • the voltage across the common electrode is a constant voltage value that does not change as each frame of the picture alternates.
  • a scan driving voltage is generated to the horizontal scan line 1, the horizontal scan line 2, the horizontal scan line 3, ..., the horizontal scan line n, and the horizontal scan line 1
  • the horizontal scanning line 2, the horizontal scanning line 3, ..., the horizontal scanning line n are electrically connected to the gates of the thin film transistors in the respective pixel units of the respective rows, and the scanning driving voltage is passed through the horizontal scanning line 1 and the horizontal scanning line. 2.
  • the horizontal scanning line 3, ..., the horizontal scanning line n is transmitted to the gate of the thin film transistor in each pixel unit, and the thin film transistor in each pixel unit is turned on, so that the data driving voltage is passed through the source of the thin film transistor. And the drain is transmitted to the pixel electrode of each pixel unit.
  • the scan drive voltage acts for less than the duration of the frame-to-frame transition.
  • step S102 referring to FIG. 3, the data driving voltage is set in accordance with the voltage on the common electrode.
  • the data driving voltage is set to a voltage on the common electrode during the frame-to-frame alternation.
  • the time at which the data drive voltage acts is less than the duration of the frame-to-frame alternation.
  • step S103 the data driving voltage is transmitted to the pixel electrodes of the respective pixel units of the display panel.
  • the embodiment of the present invention generates a data voltage to be transmitted to the pixel electrodes of each pixel unit of the display panel during all the frame and frame alternations. Since the data voltage is set to a voltage on the common electrode, the pixel electrode is There is no pressure difference between the common electrode and the common electrode, so that during the frame-to-frame alternation, the charge balance between the storage capacitor formed between the pixel electrode and the common electrode on each pixel unit of the display panel, thereby displaying the ions on the panel Will not be biased toward the pixel electrode or the common electrode, will not induce ions to cause DC residual, so there will be no painting
  • the data voltage may be V1, V2, V3, ..., Vn, where V1, V2, V3, . . , Vn is the different gray scale voltage of the display panel, and the data driving voltage on the N-1th frame and the Nth frame is switched between positive and negative polarity with respect to the voltage on the common electrode, the Nth frame Switching between the positive and negative polarity of the data driving voltage on the N+1th frame with respect to the voltage on the common electrode can further avoid polarization of the display panel, resulting in a residual image phenomenon on the screen.
  • the driving method of the display panel provided by the embodiment of the invention provides a scan driving voltage and a data driving voltage to the display panel during the frame and frame alternation, so that no pressure is generated between the pixel electrode and the common electrode in the display panel. Poor, the residual ions do not move to the pixel electrode or the common electrode, so that no DC residual phenomenon occurs, and the residual image phenomenon on the display panel can be weakened or eliminated.
  • the present invention also provides a driving method of a display panel according to a second preferred embodiment, which is different from the driving method of the display panel of the first preferred embodiment in that the data driving voltage is set during the 2n+1th frame-to-frame alternation.
  • a first driving voltage the data driving voltage is set to a second driving voltage during the 2nth frame-to-frame alternation; the first driving voltage is greater than a voltage on the common electrode; and the second driving voltage is less than
  • the voltage on the common electrode can also cause the display panel to have no residual image phenomenon.
  • FIG. 4 is a flow chart of a second preferred embodiment of the driving method of the display panel of the present invention.
  • Step S201 generating a scan driving voltage to each scan line of the display panel during the frame-to-frame alternation, and opening each thin film transistor of the display panel;
  • Step S202 setting a data driving voltage according to a voltage on the common electrode
  • Step S203 the data driving voltage is transmitted to the pixel electrodes of each pixel unit of the display panel.
  • the driving method of the display panel there are mainly three kinds of voltages, which are a scan driving voltage, a data driving voltage, and a voltage on the common electrode.
  • the scan driving voltage is used to control the opening or closing of the thin film transistor in the pixel unit;
  • the data driving voltage is used to drive the source of the thin film transistor in the pixel unit, and the data driving voltage is transmitted to the pixel electrode through the source and the drain of the thin film transistor.
  • the display panel mainly comprises an array substrate and a color filter substrate disposed opposite to each other and a liquid crystal layer sandwiched between the two plates, and a common electrode is electrically connected on the array substrate and the color filter substrate, and is electrically connected.
  • a common electrode on the array substrate is used to form a storage capacitor with the pixel electrode, and a common electrode on the color filter substrate is used to form a liquid crystal capacitor with the pixel electrode.
  • the voltage on the common electrode is provided by a common electrode voltage module of the display panel, and the common electrode voltage module provides a common electrode voltage when the display panel displays the screen, and the common electrode voltage is a constant value.
  • FIG. 2 is a timing chart of the scan driving voltage of the driving method of the display panel of the present invention.
  • the scanning driving voltage is sequentially supplied from the top to the bottom to the horizontal scanning line 1, the horizontal scanning line 2, the horizontal scanning line 3, ... ..., horizontal scanning line n, thereby completing scanning of one frame of picture, that is, from the corresponding thin film transistor on the first scanning line to the corresponding thin film transistor on the last scanning line is turned off, this time is called a frame period.
  • the voltage across the common electrode is a constant voltage value that does not change as each frame of the picture alternates.
  • a scan driving voltage is generated to the horizontal scan line 1, the horizontal scan line 2, the horizontal scan line 3, ..., the horizontal scan line n, and the horizontal scan line 1
  • the horizontal scanning line 2, the horizontal scanning line 3, ..., the horizontal scanning line n are electrically connected to the gates of the thin film transistors in the respective pixel units of the respective rows, and the scanning driving voltage is passed through the horizontal scanning line 1 and the horizontal scanning line. 2.
  • the horizontal scanning line 3, ..., the horizontal scanning line n is transmitted to the gate of the thin film transistor in each pixel unit, and the thin film transistor in each pixel unit is turned on, so that the data driving voltage is passed through the source of the thin film transistor. And the drain is transmitted to the pixel electrode of each pixel unit.
  • the scan drive voltage acts for less than the duration of the frame-to-frame transition.
  • FIG. 5 is a timing chart of data driving voltages of a second preferred embodiment of the driving method of the display panel of the present invention.
  • the data driving voltage is set in accordance with the voltage on the common electrode.
  • the data driving voltage is set to a first driving voltage during the 2n+1th frame-to-frame alternation; and the data driving voltage is set to the second driving voltage during the 2nth frame-to-frame alternating period
  • the data driving voltage is set to a first driving voltage; during the alternating of the Nth frame and the (N+1)th frame, the data driving voltage is set to Second drive voltage.
  • the data driving voltage may be set to a first driving voltage during the 2nth frame-to-frame alternation; and the data driving voltage may be set to a second during the 2n+1th frame-to-frame alternating period. Drive voltage.
  • the first driving voltage is greater than a voltage on the common electrode; the second driving voltage is less than a voltage on the common electrode.
  • the time at which the data drive voltage acts is less than the duration of the frame-to-frame alternation.
  • step S203 the data driving voltage is transmitted to the pixel electrodes of each pixel unit of the display panel.
  • the embodiment of the present invention generates a first driving voltage to be transmitted to the pixel electrodes of each pixel unit of the display panel during the 2n+1th frame-to-frame alternation, so that the pixel electrode and the common electrode are generated.
  • the embodiment of the present invention further generates a second driving voltage during the 2nth frame-to-frame alternation a pixel electrode on each pixel unit of the display panel, such that a second voltage difference is generated between the pixel electrode and the common electrode, the second voltage difference being equal to a voltage on the pixel electrode minus the common electrode The voltage on it.
  • the embodiment of the present invention may also generate a first driving voltage to be transmitted to the pixel electrodes of each pixel unit of the display panel during the 2nth frame-to-frame alternation, so that the pixel electrode and the common electrode are generated. a first voltage difference, the first voltage difference being equal to a voltage on the pixel electrode minus a voltage on the common electrode; the embodiment of the invention further generating a second driving voltage during the 2n+1th frame-to-frame alternation Passing to the pixel electrode of each pixel unit of the display panel, so that a second voltage difference is generated between the pixel electrode and the common electrode, the second voltage difference is equal to the voltage on the pixel electrode minus the The voltage on the common electrode.
  • a sum of the first pressure difference and the second pressure difference is zero.
  • the residual ions of the display panel are positive ions
  • the positive ions may go to the pixel.
  • the electrode moves; during the 2n+1th frame-to-frame alternation, since there is a first pressure difference between the pixel electrode and the common electrode, positive ions move toward the common electrode.
  • the charge balance between the storage capacitor formed between the pixel electrode and the common electrode on each pixel unit of the display panel the positive ions do not Deviation to the pixel electrode and the common electrode does not induce ion-induced DC residual, so that no image residual phenomenon occurs.
  • the residual ions of the display panel are positive ions
  • the positive ions will be Moving to the pixel electrode; during the 2nth frame-to-frame alternation, since there is a first pressure difference between the pixel electrode and the common electrode, positive ions move toward the common electrode.
  • the charge balance between the storage capacitor formed between the pixel electrode and the common electrode on each pixel unit of the display panel the positive ions do not Deviation to the pixel electrode and the common electrode does not induce ion-induced DC residual, so that no image residual phenomenon occurs.
  • the data voltage may be V1, V2, V3, ..., Vn, where V1, V2, V3, .... .., Vn is the different gray scale voltage of the display panel, and the data driving voltage on the N-1th frame and the Nth frame is switched between positive and negative polarity with respect to the voltage on the common electrode, the Nth frame and the Nth The data driving voltage on the +1 frame is switched between positive and negative polarity with respect to the voltage on the common electrode, which can further avoid polarization of the display panel and cause image residual image phenomenon.
  • the driving method of the display panel provided by the embodiment of the present invention provides a scan driving voltage and a data driving voltage to the display panel during the frame and frame alternation, so that the 2nth frame and frame alternate period and the 2n+1 are performed. After the frame and frame alternate periods, there is no pressure difference between the pixel electrode and the common electrode in the display panel, and the residual ions do not move to the pixel electrode or the common electrode, so that no DC residual phenomenon occurs, and the display can be weakened or eliminated. The image on the panel remains image.
  • FIG. 6 is a schematic diagram of an array substrate of a preferred embodiment of the display panel of the present invention.
  • the display panel of the present invention mainly comprises an array substrate and a color filter substrate disposed opposite to each other, and a liquid crystal layer sandwiched between the two substrates.
  • the liquid crystal layer is composed of liquid crystal molecules.
  • the array substrate includes scan lines 110 arranged in a horizontal direction of the substrate and data lines 120 arranged in a vertical direction of the substrate, the scan lines 110 and the data lines 120 intersecting each other to form a pixel unit 101, and the pixel unit 101 includes a pixel electrode 102 And a thin film transistor 103.
  • the gate of the thin film transistor 103 is electrically connected to the scan line 110, the source is electrically connected to the data line 120, the drain is electrically connected to the pixel electrode 102, and each of the scan lines 110 and the corresponding thin film transistor 103 The gates are connected, and each of the data lines 120 is connected to the source of each of the thin film transistors 103 of the corresponding column.
  • the scan driving voltages are respectively sent to the respective thin film transistors 103 of the corresponding rows by the scan lines 110, the thin film transistors 103 are controlled to be turned on or off row by row; and when the thin film transistors 103 are turned on, the data driving on the data lines 120 is driven.
  • a voltage is applied to the pixel electrode 102 of the pixel unit 101 via the source and drain of the thin film transistor 103.
  • FIG. 7 is a schematic structural view of a first preferred embodiment of a driving device for a display panel according to the present invention.
  • the driving device 70 of the display panel of the preferred embodiment includes a scan driving voltage generating module 701, a data driving voltage generating module 702, and a driving voltage transfer module 703.
  • the scan driving voltage generating module 701 is configured to generate a scan driving voltage to each scan line of the display panel during frame-to-frame alternation to open each thin film transistor of the display panel; and the data driving voltage generating module 702 is configured to The voltage on the common electrode sets the data driving voltage; the data driving voltage transfer module 703 is configured to transmit the data driving voltage to the pixel electrodes of the respective pixel units of the display panel.
  • the scan driving voltage generating module 701 scans and generates a scan driving voltage to the horizontal scanning line 1, the horizontal scanning line 2, the horizontal scanning line 3, ..., the horizontal scanning line n, and the level
  • the scan line 1, the horizontal scan line 2, the horizontal scan line 3, ..., the horizontal scan line n are electrically connected to the gates of the thin film transistors in the respective pixel units of each row, and the scan driving voltage is passed through the horizontal scan line 1
  • the horizontal scanning line 2, the horizontal scanning line 3, ..., the horizontal scanning line n are transmitted to the gate of the thin film transistor in each pixel unit, and the thin film transistor in each pixel unit is turned on, so that the data driving voltage is passed through the thin film.
  • the source and drain of the transistor are passed to the pixel electrode of each pixel unit.
  • the data driving voltage generating module 702 sets the data driving voltage according to the voltage on the common electrode. During the frame-to-frame alternation, the data driving voltage generation module 702 sets the data driving voltage to a voltage on the common electrode.
  • the data voltage transfer module 703 transmits the data driving voltage generated by the data voltage generating module 702 to the pixel electrodes of the respective pixel units of the display panel. Specifically, the embodiment of the present invention generates a data voltage to be transmitted to the pixel electrodes of each pixel unit of the display panel during all the frame and frame alternations.
  • the pixel electrode Since the data voltage is set to a voltage on the common electrode, the pixel electrode is There is no pressure difference between the common electrode and the common electrode, so that during the frame-to-frame alternation, the charge balance between the storage capacitor formed between the pixel electrode and the common electrode on each pixel unit of the display panel, thereby displaying the ions on the panel It does not deviate to the pixel electrode or the common electrode, and does not induce ions to cause DC residual, so that no image residual phenomenon occurs.
  • the data driving voltage generating module 702 sets the data voltage to V1, V2, V3, ..., Vn, where V1 , V2, V3, ..., Vn are different gray scale voltages of the display panel, and the data driving voltages on the N-1th frame and the Nth frame are positive and negative with respect to the voltage on the common electrode
  • the switching between the data driving voltages on the Nth frame and the N+1th frame is positive and negative with respect to the voltage on the common electrode, which can further avoid polarization of the display panel and cause image residual image phenomenon.
  • the driving device 70 of the display panel of the embodiment of the present invention inputs a scan driving voltage to the gate of each thin film transistor 103 on the display panel through the scan line 110 during the frame-to-frame alternation, and inputs a data driving voltage to the data line 120 to
  • the display panel is on the pixel electrode 102 of each pixel unit 101, so that the DC residual caused by the ions can be weakened or eliminated when the frame and the frame are alternated, so that the image overlap is not caused when the screen is switched, and the residual image is easily eliminated. image.
  • FIG. 8 is a schematic structural view of a second preferred embodiment of a driving device for a display panel according to the present invention.
  • the driving device 80 of the display panel of the preferred embodiment includes a scan driving voltage generating module 801, a data driving voltage generating module 802, and a driving voltage transfer module 803.
  • the scan driving voltage generating module 801 is configured to generate a scan driving voltage to each scan line of the display panel during frame-to-frame alternation, to open each thin film transistor of the display panel; and the data driving voltage generating module 802 is configured to The voltage on the common electrode sets the data driving voltage; the data driving voltage transfer module 803 is configured to transmit the data driving voltage to the pixel electrodes of the respective pixel units of the display panel.
  • the scan driving voltage generating module 801 scans and generates a scan driving voltage to the horizontal scanning line 1, the horizontal scanning line 2, the horizontal scanning line 3, ..., the horizontal scanning line n, and the level
  • the scan line 1, the horizontal scan line 2, the horizontal scan line 3, ..., the horizontal scan line n are electrically connected to the gates of the thin film transistors in the respective pixel units of each row, and the scan driving voltage is passed through the horizontal scan line 1
  • the horizontal scanning line 2, the horizontal scanning line 3, ..., the horizontal scanning line n are transmitted to the gate of the thin film transistor in each pixel unit, and the thin film transistor in each pixel unit is turned on, so that the data driving voltage is passed through the thin film.
  • the source and drain of the transistor are passed to the pixel electrode of each pixel unit.
  • the data driving voltage generation module 802 sets the data driving voltage according to the voltage on the common electrode. During the 2n+1th frame-to-frame alternation, the data driving voltage generating module 802 sets the data driving voltage to the first driving voltage; during the 2nth frame-to-frame alternation, the data driving voltage generating module 802 will The data driving voltage is set to the second driving voltage.
  • the data driving voltage generating module 802 sets the data driving voltage to the first driving voltage; during the 2n+1th frame-to-frame alternation, the data driving voltage is generated. Module 802 sets the data drive voltage to a second drive voltage.
  • the first driving voltage is greater than a voltage on the common electrode; the second driving voltage is less than a voltage on the common electrode.
  • the data voltage transfer module 803 transmits the data driving voltage generated by the data voltage generating module 802 to the pixel electrodes of the respective pixel units of the display panel. Specifically, the embodiment of the present invention generates a first driving voltage to be transmitted to the pixel electrodes of each pixel unit of the display panel during the 2n+1th frame-to-frame alternation, so that the pixel electrode and the common electrode are generated.
  • the embodiment of the present invention further generates a second driving voltage during the 2nth frame-to-frame alternation a pixel electrode on each pixel unit of the display panel, such that a second voltage difference is generated between the pixel electrode and the common electrode, the second voltage difference being equal to a voltage on the pixel electrode minus the common electrode The voltage on it.
  • the embodiment of the present invention may also generate a first driving voltage to be transmitted to the pixel electrodes of each pixel unit of the display panel during the 2nth frame-to-frame alternation, so that the pixel electrode and the common electrode are generated. a first voltage difference, the first voltage difference being equal to a voltage on the pixel electrode minus a voltage on the common electrode; the embodiment of the invention further generating a second driving voltage during the 2n+1th frame-to-frame alternation Passing to the pixel electrode of each pixel unit of the display panel, so that a second voltage difference is generated between the pixel electrode and the common electrode, the second voltage difference is equal to the voltage on the pixel electrode minus the The voltage on the common electrode.
  • a sum of the first pressure difference and the second pressure difference is zero.
  • the residual ions of the display panel are positive ions
  • the positive ions may go to the pixel.
  • the electrode moves; during the 2n+1th frame-to-frame alternation, since there is a first pressure difference between the pixel electrode and the common electrode, positive ions move toward the common electrode.
  • the charge balance between the storage capacitor formed between the pixel electrode and the common electrode on each pixel unit of the display panel the positive ions do not Deviation to the pixel electrode and the common electrode does not induce ion-induced DC residual, so that no image residual phenomenon occurs.
  • the residual ions of the display panel are positive ions
  • the positive ions will be Moving to the pixel electrode; during the 2nth frame-to-frame alternation, since there is a first pressure difference between the pixel electrode and the common electrode, positive ions move toward the common electrode.
  • the charge balance between the storage capacitor formed between the pixel electrode and the common electrode on each pixel unit of the display panel the positive ions do not Deviation to the pixel electrode and the common electrode does not induce ion-induced DC residual, so that no image residual phenomenon occurs.
  • the data driving voltage generating module 802 sets the data voltage to V1, V2, V3, ..., Vn, where V1, V2 , V3, ..., Vn are different gray scale voltages of the display panel, and the data driving voltages on the N-1th frame and the Nth frame are switched between positive and negative polarities with respect to the voltage on the common electrode.
  • the data driving voltage on the Nth frame and the N+1th frame is switched between positive and negative polarity with respect to the voltage on the common electrode, which can further avoid polarization of the display panel and cause image residual image phenomenon.
  • the driving device 80 of the display panel of the embodiment of the present invention inputs a scan driving voltage to the gate of each thin film transistor 103 on the display panel through the scan line 110 during the frame and frame alternation, and inputs a data driving voltage to the data line 120 to
  • the display panel is on the pixel electrode 102 of each pixel unit 101, so that the DC residual caused by the ions can be weakened or eliminated when the frame and the frame are alternated, so that the image overlap is not caused when the screen is switched, and the residual image is easily eliminated. image.
  • the driving method of the display panel and the driving device of the display panel provided by the present invention provide a scan driving voltage and a data driving voltage to the display panel during the frame and frame alternation, so that there is no pixel electrode and the common electrode in the display panel.
  • the pressure difference, the residual ions will not move to the pixel electrode or the common electrode, so that no DC residual phenomenon will occur, and the phenomenon of residual image on the display panel can be weakened or eliminated.

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Abstract

一种显示面板的驱动方法及显示面板的驱动装置，包括在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管(S201)；根据公共电极上的电压设置数据驱动电压(S202)；将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上(S203)。

Description

一种显示面板的驱动方法及显示面板的驱动装置 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种显示面板的驱动方法及显示面板的驱动装置。
 背景技术
液晶显示装置（LCD，Liquid Crystal Display）具有轻薄短小、低耗电及低热量等优点，使液晶显示装置在众多不同类型的显示装置中脱颖而出，被广泛 使用，如应用在计算机、移动电话及个人数字助理等现代化信息设备上。
现有技术中，在帧与帧交替期间显示面板上所有薄膜晶体管都处于关闭状态下，使得数据驱动电压无法通过薄膜晶体管传至显示面板各个像素单元的像素电极上，从而使得像素电极与公共电极之间在每一个帧与帧交替期间都具有压差，随着多帧画面的交替，残留的离子逐渐移向像素电极或公共电极，进而产生直流残留现象，使得显示面板上出现画面残留影像。
 技术问题
本发明提供一种显示面板的驱动方法及显示面板的驱动装置，可以有效的解决现有技术中由于像素电极与公共电极之间在每一个帧与帧交替期间都具有压差，随着多帧画面的交替，残留的离子逐渐移向像素电极或公共电极，进而产生直流残留现象，使得显示面板上出现画面残留影像的技术问题。
 技术解决方案
为了解决上述技术问题，本发明提供的显示面板的驱动方法，包括：
在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
根据公共电极上的电压设置数据驱动电压,将所述数据驱动电压设置成公共电极上的电压，其中，所述公共电极电压为恒定不变的；
将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
在本发明所述的显示面板的驱动方法中，在第2n+1个帧与帧交替期间，所述数据驱动电压设置成第一驱动电压；在第2n个帧与帧交替期间，所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
在本发明所述的显示面板的驱动方法中，所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
在本发明所述的显示面板的驱动方法中，在第2n个帧与帧交替期间，所述数据驱动电压设置成第一驱动电压；在第2n+1个帧与帧交替期间，所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
在本发明所述的显示面板的驱动方法中，所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
本发明还提供一种显示面板的驱动方法，包括：
在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
根据公共电极上的电压设置数据驱动电压；
将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
在本发明所述的显示面板的驱动方法中，所述数据驱动电压设置成公共电极上的电压。
在本发明所述的显示面板的驱动方法中，在第2n+1个帧与帧交替期间，所述数据驱动电压设置成第一驱动电压；在第2n个帧与帧交替期间，所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
在本发明所述的显示面板的驱动方法中，所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
在本发明所述的显示面板的驱动方法中，所述公共电极上的电压为恒定不变的。
本发明还提供一种显示面板的驱动装置，其包括：
扫描驱动电压生成模块，用于在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
数据驱动电压生成模块，用于根据公共电极上的电压设置数据驱动电压；
数据驱动电压传递模块，用于将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
在本发明所述的显示面板的驱动装置中，所述数据驱动电压生成模块将所述数据驱动电压设置成公共电极上的电压。
在本发明所述的显示面板的驱动装置中，所述数据驱动电压生成模块在第2n+1个帧与帧交替期间，将所述数据驱动电压设置成第一驱动电压；所述数据驱动电压生成模块在第2n个帧与帧交替期间，将所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
在本发明所述的显示面板的驱动装置中，所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
在本发明所述的显示面板的驱动装置中，所述公共电极上的电压为恒定不变的。
 有益效果
由上述技术方案可见，本发明提供的显示面板的驱动方法及显示面板的驱动装置，在帧与帧交替期间，提供一扫描驱动电压和数据驱动电压至所述显示面板，使得显示面板中像素电极与公共电极之间没有压差，残留的离子不会移向像素电极或公共电极，进而不会产生直流残留现象，可以减弱或消除显示面板上的画面残留影像现象。
 附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
图1为本发明的显示面板的驱动方法的第一优选实施例流程图；
图2为本发明的显示面板的驱动方法的扫描驱动电压的时序图；
图3为本发明的显示面板的驱动方法的第一优选实施例的数据驱动电压时序图；
图4为本发明的显示面板的驱动方法的第二优选实施例流程图；
图5为本发明的显示面板的驱动方法的第二优选实施例的数据驱动电压时序图；
图6为本发明显示面板优选实施的阵列基板示意图；
图7为本发明显示面板的驱动装置第一优选实施例的结构示意图；
图8为本发明显示面板的驱动装置第二优选实施例的结构示意图。
 本发明的最佳实施方式
为使本发明的目的、技术方案及优点更加清楚明白，以下参照附图并举实施例，对本发明作进一步详细说明。
请参照图1，图1为本发明的显示面板的驱动方法的第一优选实施例流程图。
本发明第一优选实施例提供的显示面板的驱动方法，其具体步骤为：
步骤S101，在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
步骤S102，根据公共电极上的电压设置数据驱动电压；
步骤S103，将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
具体地，本发明所述的显示面板的驱动方法中，主要有三种电压，分别为扫描驱动电压、数据驱动电压及公共电极上的电压。其中扫描驱动电压用于控制像素单元中薄膜晶体管的开启或关闭；数据驱动电压用于驱动像素单元中的薄膜晶体管的源极，将数据驱动电压经薄膜晶体管的源极和漏极传至像素电极上；显示面板主要包括相互对置设置的阵列基板和彩色滤光基板以及夹在两极板之间的液晶层，而在阵列基板和彩色滤光片基板上都有公共电极，并电性连接，在阵列基板上的公共电极用于与像素电极形成存储电容，彩色滤光片基板上的公共电极用于与像素电极形成液晶电容。公共电极上的电压由显示面板的公共电极电压模块提供，公共电极电压模块为显示面板在显示画面时提供公共电极电压，该公共电极电压为恒定值。
在步骤S101中，参阅图2，图2为本发明的显示面板的驱动方法的扫描驱动电压的时序图。
可以看出，显示面板上有n行水平扫描线，当扫描线逐行扫描时，扫描驱动电压从上至下依次提供给水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n，从而完成一帧画面的扫描，即从第一根扫描线上对应的薄膜晶体管打开到最后一根扫描线上对应的薄膜晶体管关闭，这段时间称为一帧期间。特别地，公共电极上的电压为一恒定的电压值，不会随着每一帧画面交替而变化。但是，会存在一帧与帧交替期间，即前一帧的最后一根扫描线上对应的薄膜晶体管关闭到当前帧的第一根扫描线上对应的薄膜晶体管打开的期间，如图2中的N-1帧和N+1帧之间的帧与帧交替期间以及N帧与N+1帧之间的帧与帧交替期间。此时，在帧与帧交替期间上，生成一扫描驱动电压给水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n，而水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n分别与各行各个像素单元中的薄膜晶体管的栅极电性连接，扫描驱动电压经水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n传至各个像素单元中的薄膜晶体管的栅极，打开各个像素单元中的薄膜晶体管，使数据驱动电压经薄膜晶体管的源极和漏极传至各个像素单元的像素电极上。
特别地，在帧与帧交替期间，扫描驱动电压作用的时间小于所述帧与帧交替期间的持续时间。
在步骤S102中，参阅图3，根据公共电极上的电压设置数据驱动电压。优选地，在帧与帧交替期间，将所述数据驱动电压设置成公共电极上的电压。
特别地，所述数据驱动电压作用的时间小于所述帧与帧交替期间的持续时间。
在步骤S103中，将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。具体地，本发明实施例在所有帧与帧交替期间生成一数据电压传至所述显示面板各个像素单元的像素电极上，由于所述数据电压设置成公共电极上的电压，故所述像素电极与公共电极之间不会产生压差，从而使得在帧与帧交替期间，显示面板各个像素单元上的像素电极与公共电极之间形成的存储电容之间的电荷平衡，进而显示面板上的离子不会偏向像素电极或公共电极，不会诱发离子引起直流残留，从而不会出现画
面残留影像现象。
进一步地，在第N-1帧、第N帧以及第N+1帧期间，所述数据电压可为V1、V2、V3、......、Vn，其中V1、V2、V3、......、Vn为显示面板的不同灰阶电压，第N-1帧与第N帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，第N帧与第N+1帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，可以进一步避免显示面板极化，导致画面残留影像现象。
本发明实施例提供的显示面板的驱动方法，在帧与帧交替期间，提供一扫描驱动电压和一数据驱动电压至所述显示面板，使得显示面板中像素电极与公共电极之间不会产生压差，残留的离子不会移向像素电极或公共电极，进而不会产生直流残留现象，可以减弱或消除显示面板上的画面残留影像现象。
本发明还提供第二优选实施例的显示面板的驱动方法，与第一优选实施例的显示面板的驱动方法的区别在于，在第2n+1个帧与帧交替期间，所述数据驱动电压设置成第一驱动电压；在第2n个帧与帧交替期间，所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压，同样可以使显示面板不会出现画面残留影像现象。
请参照图4，图4为本发明的显示面板的驱动方法的第二优选实施例流程图。
本发明第二优选实施例的显示面板的驱动方法，其具体步骤为：
步骤S201，在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
步骤S202，根据公共电极上的电压设置数据驱动电压；
步骤S203，将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
具体地，本发明所述的显示面板的驱动方法中，主要有三种电压，分别为扫描驱动电压、数据驱动电压及公共电极上的电压。其中扫描驱动电压用于控制像素单元中薄膜晶体管的开启或关闭；数据驱动电压用于驱动像素单元中的薄膜晶体管的源极，将数据驱动电压经薄膜晶体管的源极和漏极传至像素电极上；显示面板主要包括相互对置设置的阵列基板和彩色滤光基板以及夹在两极板之间的液晶层，而在阵列基板和彩色滤光片基板上都有公共电极，并电性连接，在阵列基板上的公共电极用于与像素电极形成存储电容，彩色滤光片基板上的公共电极用于与像素电极形成液晶电容。公共电极上的电压由显示面板的公共电极电压模块提供，公共电极电压模块为显示面板在显示画面时提供公共电极电压，该公共电极电压为恒定值。
在步骤S201中，参阅图2，图2为本发明的显示面板的驱动方法的扫描驱动电压的时序图。
可以看出，显示面板上有n行水平扫描线，当扫描线逐行扫描时，扫描驱动电压从上至下依次提供给水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n，从而完成一帧画面的扫描，即从第一根扫描线上对应的薄膜晶体管打开到最后一根扫描线上对应的薄膜晶体管关闭，这段时间称为一帧期间。特别地，公共电极上的电压为一恒定的电压值，不会随着每一帧画面交替而变化。但是，会存在一帧与帧交替期间，即前一帧的最后一根扫描线上对应的薄膜晶体管关闭到当前帧的第一根扫描线上对应的薄膜晶体管打开的期间，如图2中的N-1帧和N+1帧之间的帧与帧交替期间以及N帧与N+1帧之间的帧与帧交替期间。此时，在帧与帧交替期间上，生成一扫描驱动电压给水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n，而水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n分别与各行各个像素单元中的薄膜晶体管的栅极电性连接，扫描驱动电压经水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n传至各个像素单元中的薄膜晶体管的栅极，打开各个像素单元中的薄膜晶体管，使数据驱动电压经薄膜晶体管的源极和漏极传至各个像素单元的像素电极上。
特别地，在帧与帧交替期间，扫描驱动电压作用的时间小于所述帧与帧交替期间的持续时间。
如图5所示，图5为本发明的显示面板的驱动方法的第二优选实施例的数据驱动电压时序图。
在步骤S202中，参阅图5，根据公共电极上的电压设置数据驱动电压。优选地，在第2n+1个帧与帧交替期间，将所述数据驱动电压设置成第一驱动电压；在第2n个帧与帧交替期间，将所述数据驱动电压设置成第二驱动电压，如：在第N-1帧与第N帧交替期间，将所述数据驱动电压设置成第一驱动电压；在第N帧与第N+1帧交替期间，将所述数据驱动电压设置成第二驱动电压。
优选地，也可以在第2n个帧与帧交替期间，将所述数据驱动电压设置成第一驱动电压；在第2n+1个帧与帧交替期间，将所述数据驱动电压设置成第二驱动电压。
所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
特别地，所述数据驱动电压作用的时间小于所述帧与帧交替期间的持续时间。
在步骤S203中，将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。具体地，本发明实施例在第2n+1个帧与帧交替期间生成第一驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第一压差，所述第一压差等于所述像素电极上的电压减去所述公共电极上的电压；本发明实施例还在第2n个帧与帧交替期间生成第二驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第二压差，所述第二压差等于所述像素电极上的电压减去所述公共电极上的电压。
优选地，本发明实施例也可以在第2n个帧与帧交替期间生成第一驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第一压差，所述第一压差等于所述像素电极上的电压减去所述公共电极上的电压；本发明实施例还在第2n+1个帧与帧交替期间生成第二驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第二压差，所述第二压差等于所述像素电极上的电压减去所述公共电极上的电压。
进一步地，所述第一压差与所述第二压差的和为零。具体地，当所述显示面板残余的离子为正离子时，在第2n个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第二压差，使得正离子会往像素电极移动；在第2n+1个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第一压差，使得正离子会往公共电极移动。经过第2n个帧与帧交替期间和第2n+1个帧与帧交替期间后，显示面板各个像素单元上的像素电极与公共电极之间形成的存储电容之间的电荷平衡，正离子不会偏向像素电极和公共电极，不会诱发离子引起直流残留，从而不会出现画面残留影像现象。
优选地，当所述显示面板残余的离子为正离子时，在第2n+1个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第二压差，使得正离子会往像素电极移动；在第2n个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第一压差，使得正离子会往公共电极移动。经过第2n个帧与帧交替期间和第2n+1个帧与帧交替期间后，显示面板各个像素单元上的像素电极与公共电极之间形成的存储电容之间的电荷平衡，正离子不会偏向像素电极和公共电极，不会诱发离子引起直流残留，从而不会出现画面残留影像现象。
在第N-1帧、第N帧以及第N+1帧期间，所述数据电压可为V1、V2、V3、......、Vn，其中V1、V2、V3、......、Vn为显示面板的不同灰阶电压，第N-1帧与第N帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，第N帧与第N+1帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，可以进一步避免显示面板极化，导致画面残留影像现象。
本发明实施例提供的显示面板的驱动方法，在帧与帧交替期间，提供一扫描驱动电压和一数据驱动电压至所述显示面板，使得经过第2n个帧与帧交替期间与第2n+1个帧与帧交替期间后，显示面板中像素电极与公共电极之间不会产生压差，残留的离子不会移向像素电极或公共电极，进而不会产生直流残留现象，可以减弱或消除显示面板上的画面残留影像现象。
如图6所示，图6为本发明显示面板优选实施例的阵列基板示意图。
本发明的显示面板主要包括相互对置设置的阵列基板和彩色滤光基板，以及夹在两基板之间的液晶层。其中，液晶层由液晶分子构成。
阵列基板包括沿基板的水平方向排列的扫描线110和沿基板的垂直方向排列的数据线120，所述扫描线110和所述数据线120相互交叉形成像素单元101，像素单元101包括像素电极102及薄膜晶体管103。其中，薄膜晶体管103的栅极与扫描线110电性相连，源极与数据线120电性相连，漏极与像素电极102电性相连，且每一条扫描线110与对应行的各薄膜晶体管103的栅极相连，每一条数据线120与对应列的各薄膜晶体管103的源极相连。
显示面板工作时，利用扫描线110分别发送扫描驱动电压至对应行的各薄膜晶体管103，控制薄膜晶体管103逐行开启或关闭；且当薄膜晶体管103处于开启状态时，数据线120上的数据驱动电压会经由薄膜晶体管103的源极和漏极加至像素单元101的像素电极102上。
如图7所示，图7为本发明显示面板的驱动装置第一优选实施例的结构示意图。
本优选实施例的显示面板的驱动装置70包括扫描驱动电压生成模块701、数据驱动电压生成模块702以及据驱动电压传递模块703。其中扫描驱动电压生成模块701用于在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；数据驱动电压生成模块702用于根据公共电极上的电压设置数据驱动电压；数据驱动电压传递模块703用于将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
在帧与帧交替期间上，扫描驱动电压生成模块701扫描生成一扫描驱动电压给水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n，而水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n分别与各行各个像素单元中的薄膜晶体管的栅极电性连接，扫描驱动电压经水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n传至各个像素单元中的薄膜晶体管的栅极，打开各个像素单元中的薄膜晶体管，使数据驱动电压经薄膜晶体管的源极和漏极传至各个像素单元的像素电极上。
数据驱动电压生成模块702根据公共电极上的电压设置数据驱动电压。在帧与帧交替期间，数据驱动电压生成模块702将所述数据驱动电压设置成公共电极上的电压。
数据电压传递模块703将数据电压生成模块702生成的数据驱动电压传至所述显示面板各个像素单元的像素电极上。具体地，本发明实施例在所有帧与帧交替期间生成一数据电压传至所述显示面板各个像素单元的像素电极上，由于所述数据电压设置成公共电极上的电压，故所述像素电极与公共电极之间不会产生压差，从而使得在帧与帧交替期间，显示面板各个像素单元上的像素电极与公共电极之间形成的存储电容之间的电荷平衡，进而显示面板上的离子不会偏向像素电极或公共电极，不会诱发离子引起直流残留，从而不会出现画面残留影像现象。
在第N-1帧、第N帧以及第N+1帧期间，所述数据驱动电压生成模块702将所述数据电压设置为V1、V2、V3、......、Vn，其中V1、V2、V3、......、Vn为显示面板的不同灰阶电压，第N-1帧与第N帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，第N帧与第N+1帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，可以进一步避免显示面板极化，导致画面残留影像现象。
本发明实施例的显示面板的驱动装置70在帧与帧交替期间通过扫描线110向显示面板上的各个薄膜晶体管103的栅极输入一扫描驱动电压，并且向数据线120输入一数据驱动电压至显示面板各个像素单元101的像素电极102上，从而可以使得由于离子引起的直流残留在帧与帧交替时被减弱或消除，从而不会使在画面切换时有显像重叠，简便地消除画面残留影像。
如图8所示，图8为本发明显示面板的驱动装置第二优选实施例的结构示意图。
本优选实施例的显示面板的驱动装置80包括扫描驱动电压生成模块801、数据驱动电压生成模块802以及据驱动电压传递模块803。其中扫描驱动电压生成模块801用于在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；数据驱动电压生成模块802用于根据公共电极上的电压设置数据驱动电压；数据驱动电压传递模块803用于将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
在帧与帧交替期间上，扫描驱动电压生成模块801扫描生成一扫描驱动电压给水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n，而水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n分别与各行各个像素单元中的薄膜晶体管的栅极电性连接，扫描驱动电压经水平扫描线1、水平扫描线2、水平扫描线3、......、水平扫描线n传至各个像素单元中的薄膜晶体管的栅极，打开各个像素单元中的薄膜晶体管，使数据驱动电压经薄膜晶体管的源极和漏极传至各个像素单元的像素电极上。
数据驱动电压生成模块802根据公共电极上的电压设置数据驱动电压。在第2n+1个帧与帧交替期间，数据驱动电压生成模块802将所述数据驱动电压设置成第一驱动电压；在第2n个帧与帧交替期间，数据驱动电压生成模块802将所述数据驱动电压设置成第二驱动电压。
优选地，也可以在第2n个帧与帧交替期间，数据驱动电压生成模块802将所述数据驱动电压设置成第一驱动电压；在第2n+1个帧与帧交替期间，数据驱动电压生成模块802将所述数据驱动电压设置成第二驱动电压。
所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
数据电压传递模块803将数据电压生成模块802生成的数据驱动电压传至所述显示面板各个像素单元的像素电极上。具体地，本发明实施例在第2n+1个帧与帧交替期间生成第一驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第一压差，所述第一压差等于所述像素电极上的电压减去所述公共电极上的电压；本发明实施例还在第2n个帧与帧交替期间生成第二驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第二压差，所述第二压差等于所述像素电极上的电压减去所述公共电极上的电压。
优选地，本发明实施例也可以在第2n个帧与帧交替期间生成第一驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第一压差，所述第一压差等于所述像素电极上的电压减去所述公共电极上的电压；本发明实施例还在第2n+1个帧与帧交替期间生成第二驱动电压传至所述显示面板各个像素单元的像素电极上，因此所述像素电极与所述公共电极之间产生第二压差，所述第二压差等于所述像素电极上的电压减去所述公共电极上的电压。
进一步地，所述第一压差与所述第二压差的和为零。具体地，当所述显示面板残余的离子为正离子时，在第2n个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第二压差，使得正离子会往像素电极移动；在第2n+1个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第一压差，使得正离子会往公共电极移动。经过第2n个帧与帧交替期间和第2n+1个帧与帧交替期间后，显示面板各个像素单元上的像素电极与公共电极之间形成的存储电容之间的电荷平衡，正离子不会偏向像素电极和公共电极，不会诱发离子引起直流残留，从而不会出现画面残留影像现象。
优选地，当所述显示面板残余的离子为正离子时，在第2n+1个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第二压差，使得正离子会往像素电极移动；在第2n个帧与帧交替期间，由于所述像素电极与所述公共电极之间存在第一压差，使得正离子会往公共电极移动。经过第2n个帧与帧交替期间和第2n+1个帧与帧交替期间后，显示面板各个像素单元上的像素电极与公共电极之间形成的存储电容之间的电荷平衡，正离子不会偏向像素电极和公共电极，不会诱发离子引起直流残留，从而不会出现画面残留影像现象。
在第N-1帧、第N帧以及第N+1帧期间，数据驱动电压生成模块802将所述数据电压设置为V1、V2、V3、......、Vn，其中V1、V2、V3、......、Vn为显示面板的不同灰阶电压，第N-1帧与第N帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，第N帧与第N+1帧上的数据驱动电压相对于所述公共电极上的电压做正负极性的切换，可以进一步避免显示面板极化，导致画面残留影像现象。
本发明实施例的显示面板的驱动装置80在帧与帧交替期间通过扫描线110向显示面板上的各个薄膜晶体管103的栅极输入一扫描驱动电压，并且向数据线120输入一数据驱动电压至显示面板各个像素单元101的像素电极102上，从而可以使得由于离子引起的直流残留在帧与帧交替时被减弱或消除，从而不会使在画面切换时有显像重叠，简便地消除画面残留影像。
本发明提供的显示面板的驱动方法及显示面板的驱动装置，在帧与帧交替期间，提供一扫描驱动电压和数据驱动电压至所述显示面板，使得显示面板中像素电极与公共电极之间没有压差，残留的离子不会移向像素电极或公共电极，进而不会产生直流残留现象，可以减弱或消除显示面板上的画面残留影像现象。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (15)

  1. 一种显示面板的驱动方法，其包括：
    在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
    根据公共电极上的电压设置数据驱动电压,将所述数据驱动电压设置成公共电极上的电压，其中，所述公共电极电压为恒定不变的；
    将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
  2. 根据权利要求1所述的显示面板的驱动方法，其中所述根据公共电极上的电压设置数据驱动电压的步骤中，在第2n+1个帧与帧交替期间，所述数据驱动电压设置成第一驱动电压；在第2n个帧与帧交替期间，所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
  3. 根据权利要求2所述的显示面板的驱动方法，其中所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
  4. 根据权利要求1所述的显示面板的驱动方法，其中所述根据公共电极上的电压设置数据驱动电压的步骤中，在第2n个帧与帧交替期间，所述数据驱动电压设置成第一驱动电压；在第2n+1个帧与帧交替期间，所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
  5. 根据权利要求4所述的显示面板的驱动方法，其中所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
  6. 一种显示面板的驱动方法，其包括：
    在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
    根据公共电极上的电压设置数据驱动电压；
    将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
  7. 根据权利要求6所述的显示面板的驱动方法，其中所述根据公共电极上的电压设置数据驱动电压的步骤中，所述数据驱动电压设置成公共电极上的电压。
  8. 根据权利要求6所述的显示面板的驱动方法，其中所述根据公共电极上的电压设置数据驱动电压的步骤中，在第2n+1个帧与帧交替期间，所述数据驱动电压设置成第一驱动电压；在第2n个帧与帧交替期间，所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
  9. 根据权利要求8所述的显示面板的驱动方法，其中所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
  10. 根据权利要求6所述的显示面板的驱动方法，其中所述公共电极上的电压为恒定不变的。
  11. 一种显示面板的驱动装置，其包括：
    扫描驱动电压生成模块，用于在帧与帧交替期间生成一扫描驱动电压至所述显示面板的各条扫描线，打开所述显示面板的各个薄膜晶体管；
    数据驱动电压生成模块，用于根据公共电极上的电压设置数据驱动电压；
    数据驱动电压传递模块，用于将所述数据驱动电压传至所述显示面板各个像素单元的像素电极上。
  12. 根据权利要求11所述的显示面板的驱动装置，其中所述数据驱动电压生成模块将所述数据驱动电压设置成公共电极上的电压。
  13. 根据权利要求12所述的显示面板的驱动装置，其中所述数据电压生成模块在第2n+1个帧与帧交替期间，将所述数据驱动电压设置成第一驱动电压；所述数据电压生成模块在第2n个帧与帧交替期间，将所述数据驱动电压设置成第二驱动电压；所述第一驱动电压大于所述公共电极上的电压；所述第二驱动电压小于所述公共电极上的电压。
  14. 根据权利要求13所述的显示面板的驱动装置，其中所述第一驱动电压与所述公共电极上的电压之间的压差为第一压差，所述第二驱动电压与所述公共电极上的电压之间的压差为第二压差，所述第一压差与所述第二压差的和为零。
  15. 根据权利要求14所述的显示面板的驱动装置，其中所述公共电极上的电压为恒定不变的。
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