WO2020062466A1 - 一种显示面板的驱动方法、系统及显示装置 - Google Patents

一种显示面板的驱动方法、系统及显示装置 Download PDF

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Publication number
WO2020062466A1
WO2020062466A1 PCT/CN2018/114753 CN2018114753W WO2020062466A1 WO 2020062466 A1 WO2020062466 A1 WO 2020062466A1 CN 2018114753 W CN2018114753 W CN 2018114753W WO 2020062466 A1 WO2020062466 A1 WO 2020062466A1
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Prior art keywords
pixel unit
display panel
threshold voltage
preset threshold
voltage range
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PCT/CN2018/114753
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English (en)
French (fr)
Inventor
宋振莉
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惠科股份有限公司
重庆惠科金渝光电科技有限公司
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Priority to US16/312,403 priority Critical patent/US20200105213A1/en
Publication of WO2020062466A1 publication Critical patent/WO2020062466A1/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
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]

Definitions

  • the embodiments of the present application belong to the field of display technology, and in particular, to a method, a system, and a display device for driving a display panel.
  • TCON timing controller
  • Sourece Driver IC source driver chip
  • Gate Driver IC gate driver chip
  • a color shift phenomenon may occur in a display panel due to the darkening of one of the red pixel unit, the green pixel unit, and the blue pixel unit, which greatly reduces the picture quality of the display panel.
  • An object of the present application is to provide a driving method for a display panel, including, but not limited to, solving a problem that a color shift phenomenon may occur in a display panel due to a dark color of a red pixel unit, a green pixel unit, and a blue pixel unit. , Greatly reducing the technical problem of the picture quality of the display panel.
  • the embodiment of the present application proposes a driving method for a display panel.
  • the display panel includes 3N scanning lines, N ⁇ 1 and N is a positive integer.
  • the driving method includes:
  • the original pixel unit includes any one of a red pixel unit, a green pixel unit, and a blue pixel unit;
  • pixel voltage of the original pixel unit in the display panel is not within a preset threshold voltage range, determine whether the pixel voltage is less than a lower limit value of the preset threshold voltage range or greater than a preset threshold voltage range.
  • the precharge time of the scan signal output by the scan line is reduced.
  • the original pixel unit is any one of a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the step of increasing the precharge time of the scan signal output by the scan line includes:
  • increasing the duty cycle of the high-level pulse in the scan signal includes:
  • a duty cycle of the high-level pulse is determined according to a pixel voltage of the original pixel unit.
  • the step of increasing the precharge time of the scan signal output by the scan line includes:
  • a precharge pulse is added before the scan pulse of the scan signal.
  • the precharge pulse is used to charge the original pixel unit within a preset interval time before the scan pulse.
  • the step of reducing the precharge time in the scan signal includes:
  • Another object of the present application is to provide a driving system for a display panel.
  • the display panel includes 3N scanning lines, N ⁇ 1 and N is a positive integer.
  • the driving system includes:
  • the judging module is configured to judge whether the pixel voltage of the original pixel unit in the display panel is within a preset voltage threshold range, and is also used to determine whether the pixel voltage is smaller than a lower limit value of the preset threshold voltage range or Greater than the upper limit value of the preset threshold voltage range;
  • a signal adjustment module configured to increase a precharge time in a scan signal output by the scan line when the pixel voltage is less than a lower limit value of the preset threshold voltage range, and when the pixel voltage is greater than the preset When the upper limit value of the threshold voltage range is used, the precharge time in the scan signal output by the scan line is reduced.
  • the signal adjustment module is further configured to increase the duty cycle of the high-level pulse in the scan signal when the pixel voltage is less than a lower limit value of the preset threshold voltage range.
  • the signal adjustment module is further configured to determine a duty cycle of the high-level pulse according to a pixel voltage of the original pixel unit.
  • the signal adjustment module is further configured to: when the pixel voltage is less than a lower limit value of the preset threshold voltage range, add a precharge pulse before a scan pulse in the scan signal.
  • the precharge pulse is used to charge the original pixel unit within a preset interval time before the scan pulse.
  • the signal adjustment module is further configured to: when the pixel voltage is greater than an upper limit value of the preset threshold voltage range, reduce the level of the high-level pulse in the scan signal output by the scan line. Duty cycle.
  • Another object of the present application is to provide a display device, including:
  • control unit being connected to the display panel, the control unit including a driving system
  • the display panel includes 3N scanning lines, N ⁇ 1 and N is a positive integer, and the driving system includes:
  • the judging module is configured to judge whether the pixel voltage of the original pixel unit in the display panel is within a preset voltage threshold range, and is also used to determine whether the pixel voltage is smaller than a lower limit value of the preset threshold voltage range or Greater than the upper limit value of the preset threshold voltage range;
  • a signal adjustment module configured to increase a precharge time in a scan signal output by the scan line when the pixel voltage is less than a lower limit value of the preset threshold voltage range, and when the pixel voltage is greater than the preset When the upper limit value of the threshold voltage range is used, the precharge time in the scan signal output by the scan line is reduced.
  • the original pixel unit is any one of a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the display panel includes an original pixel unit array composed of multiple rows of pixels and multiple columns of pixels.
  • the signal adjustment module is further configured to increase the duty cycle of the high-level pulse in the scan signal when the pixel voltage is less than a lower limit value of the preset threshold voltage range.
  • the signal adjustment module is further configured to: when the pixel voltage is less than a lower limit value of the preset threshold voltage range, add a precharge pulse before a scan pulse in the scan signal.
  • the signal adjustment module is further configured to: when the pixel voltage is greater than an upper limit value of the preset threshold voltage range, reduce the level of the high-level pulse in the scan signal output by the scan line. Duty cycle.
  • a driving method, a system, and a display device of a display panel provided in the embodiments of the present application, by determining whether a pixel voltage of an original pixel unit in the display panel is within a preset threshold voltage range, if not, the scanning is not performed.
  • the scanning signal output by the line is processed, and if not, it is determined whether the pixel voltage is less than the lower limit value of the preset threshold voltage range or greater than the upper limit value of the preset threshold voltage range.
  • the precharge time in the scan signal output by the scan line is increased, and if the pixel voltage is greater than the upper limit of the preset threshold voltage range, the The pre-charging time in the scanning signal output by the scanning line is described, so that the brightness of the original pixel unit in the display panel is adjusted, and the existing display panel may be affected by the red pixel unit, the green pixel unit, and the blue pixel.
  • the darkening of a certain color in the unit causes the color shift phenomenon, which greatly reduces the problem of the picture quality of the display panel.
  • FIG. 1 is a schematic flowchart of a driving method of a display panel according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a driving sequence of a data signal and a scanning signal output by a scanning line provided by this embodiment of the present application;
  • FIG. 3 is a waveform diagram of a scanning signal and a data signal in another embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a driving system of a display panel according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a module of a display device according to an embodiment of the present application.
  • the display panel usually needs different power supply voltages according to the function of the function module. These power supply voltages can be provided by the power management chip. In order to prevent the voltage output signal output by the power management chip from being too large, an overcurrent protection mechanism is set inside the power management chip. For example, thin film transistor liquid crystal display panels require multiple voltage signals, and the voltage values of the multiple voltage signals are different. In order to provide multiple voltage chips for thin film transistor liquid crystal display panels, a power management chip is usually used to provide different voltage output signals. In order to prevent the voltage output signal output by the power management chip from being too large and burning down the thin film transistor liquid crystal display panel, an overcurrent protection mechanism is provided inside the power management chip.
  • a liquid crystal display (Liquid Crystal Display, LCD) is one of the most widely used displays.
  • the LCD includes a pair of panels provided with a field generating electrode and a liquid crystal layer provided between the two panels.
  • the field generating electrodes such as a pixel electrode and The common electrode and the like generate an electric field in the liquid crystal layer by applying a voltage to the field generating electrode, and the liquid crystal molecules are deflected by the electric field, so that the transmission of light can be controlled to cause the LCD to display an image.
  • the three-dimensional transistor (Tri-gate) drive architecture reduces the data line to 1/3 of the normal drive architecture and the scan line increases to three times the normal drive architecture.
  • the display panel includes 3N scan lines, N ⁇ 1 and N is a positive integer.
  • FIG. 1 is a schematic flowchart of a driving method of a display panel according to an embodiment of the present application.
  • the driving method in this embodiment includes:
  • the pixel voltage of the original pixel unit in the display panel is not within a preset threshold voltage range, determine whether the pixel voltage is less than a lower limit value of the preset threshold voltage range or greater than the preset threshold voltage.
  • the pixel voltage is less than a lower limit value of the preset threshold voltage range, increasing a precharge time of a scan signal output by the scan line;
  • the precharge time of the scan signal output by the scan line is reduced.
  • the original pixel unit in this embodiment includes any one of a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the red pixel unit is used to emit red light
  • the green pixel unit is used to emit green light
  • the blue pixel is used to emit blue light.
  • One pixel in the display panel includes a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the gray levels of the red pixel unit, the green pixel unit, and the blue pixel unit are controlled to form The color the user needs.
  • the red pixel unit in the display panel displays the red
  • the green displayed by the green pixel unit is brighter, which causes the entire screen displayed by the display panel to be yellowish; if the pixel voltage of the green pixel unit of the display panel is lower, the grayscale of the green pixel unit of the display panel is lower, At this time, the green pixel unit in the display panel displays a darker green.
  • the red pixel unit in the display panel displays the red and the blue pixel unit displays the blue lighter.
  • the entire screen is magenta; if the pixel voltage of the red pixel unit of the display panel is too small, it will cause the red pixel unit of the display panel The gray level is low. At this time, the red pixel unit in the display panel displays darker red.
  • the green pixel unit in the display panel displays green and the blue pixel unit displays blue. When this happens, the picture displayed on the display panel will become greenish.
  • the preset threshold voltage range includes the upper threshold. Limit value and lower limit value. If the pixel voltage of the original pixel unit is less than or equal to the upper limit value, and at the same time, the pixel voltage of the original pixel unit is greater than or equal to the lower limit value, it is determined that the original pixel unit is normally displayed when the corresponding primary color is displayed. The screen display of the display panel is normal. At this time, the scanning signal output by the scanning line is normally output, and the signal on the scanning line is not adjusted.
  • the pixel voltage of the original pixel unit in the display panel exceeds a preset threshold voltage range, it is determined whether the pixel voltage is less than the lower limit of the preset threshold voltage range or whether the pixel voltage is greater than the preset threshold voltage.
  • the upper limit value of the range specifically, if it is less than the lower limit value of the preset threshold voltage range, it will cause the display panel to have a color shift phenomenon. If the pixel voltage is greater than the upper limit value of the preset threshold voltage range, it may be caused by the display. The original pixel unit in the panel caused the pixel voltage to be too large due to the long charging time, which burned the display panel.
  • the precharge time of the scan signal output by the scan line is increased to improve the pixels of the original pixel unit.
  • the gray scale of the original pixel unit increases, and the brightness of the primary color displayed by the corresponding original pixel unit in the display panel also increases.
  • the precharge time in the scan signal output by the scan line is reduced, the precharge time is reduced, and the pixel voltage of the original pixel unit is reduced, thereby avoiding the original pixel unit The pixel voltage is too high and the display panel is burned.
  • FIG. 2 is a schematic diagram of a driving sequence of a data signal and a scanning signal output by a scanning line provided by this embodiment of the present application.
  • the step of increasing a precharge time in a scan signal output by the scan line includes: increasing a duty cycle of a high-level pulse in the scan signal.
  • the charging time of the original pixel unit is increased by increasing the sum of the duty cycle of the high-level pulses in the scanning signals output by the scanning lines in the display panel, that is, increasing the occupation of the high-level pulses on the original scanning pulses.
  • Air ratio through this pre-charging method to improve the pixel charging rate of the original pixel unit, so that the original pixel unit display the primary color is brighter, so as to achieve the purpose of improving the color deviation of the display panel.
  • the duty cycle of the high-level pulse in the scan signal may be determined according to the voltage value of the pixel voltage of the original pixel unit detected. If the pixel voltage of the original pixel unit is detected to be lower, the scan is performed. The higher the duty cycle of the high-level pulse in the signal.
  • G1, G2, G3, G4, G5, and G6 are scanning lines of two rows of pixels, respectively, where G1, G2, and G3 are red pixel units, green pixel units, and blue pixels in the first group of pixels.
  • the scanning lines of the unit, G4, G5, and G6 are the scanning lines of the red pixel unit, the green pixel unit, and the blue pixel unit in the second group of pixels
  • Data is the waveform of the data signal in the display panel, as shown in Figure 2, FIG. 2 shows that when the pixel voltage of the green pixel unit is less than the lower limit of the preset threshold voltage range, the sum of the duty cycle of the high-level pulses in the scan signal output by the scan line of the green pixel unit is adjusted to improve the display panel.
  • the pre-charging time of the green pixel unit makes the green displayed by the green pixel unit in the display panel brighter.
  • the step of increasing the precharge time in the scan signal output by the scan line includes: adding a precharge pulse before the scan pulse in the scan signal.
  • the original pixel unit can be charged before the pulse in the scan signal turns on the corresponding original pixel unit, thereby improving the original pixel unit.
  • the scanning pulse reaches the original pixel unit, the original pixel unit is officially charged to turn on the original pixel unit to display the corresponding color brightness.
  • the precharge pulse is used to charge the original pixel unit within a preset interval time before the scan pulse.
  • FIG. 3 is a waveform diagram of a scan signal and a data signal in another embodiment of the present application.
  • FIG. 3 shows that when the pixel voltage of the green pixel unit is less than the lower limit of the preset threshold voltage range, a precharge pulse is set in advance at a preset time interval before the scan pulse output by the scan line corresponding to the green pixel unit.
  • a precharge pulse is used to precharge the green pixel unit in advance at a preset time interval to improve the pixel charging rate of the green pixel unit.
  • the scan pulse reaches the green pixel unit, the green pixel unit is charged. Perform formal charging.
  • reducing the precharge time in the scan signal includes: reducing a duty cycle of a high-level pulse in the scan signal.
  • the corresponding sum of the duty cycles of the high-level pulses in the scan signal is reduced to reduce the corresponding The pre-charging time of the scanning signal output by the scanning line to the original pixel unit.
  • the program can be stored in a computer-readable storage medium.
  • the program When executed, the processes of the embodiments of the methods described above may be included.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random, Access Memory, RAM).
  • FIG. 4 is a schematic structural diagram of a driving system for a display panel according to an embodiment of the present application.
  • the display panel includes 3N scanning lines, N ⁇ 1 and N is a positive integer.
  • the driving system 10 includes:
  • a judging module 11 is configured to determine whether a pixel voltage of an original pixel unit in the display panel is within a preset voltage threshold range, and is also used to determine whether the pixel voltage is less than a lower limit value of the preset threshold voltage range. Or greater than the upper limit of the preset threshold voltage range, the original pixel unit is any one of a red pixel unit, a green pixel unit, and a blue pixel unit;
  • the signal adjustment module 12 is configured to increase a precharge time in a scan signal output by the scan line when the pixel voltage is less than a lower limit value of the preset threshold voltage range, and when the pixel voltage is greater than the When the upper limit value of the threshold voltage range is set, the precharge time in the scan signal output by the scan line is reduced.
  • the original pixel unit in this embodiment includes any one of a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the red pixel unit is used to emit red light
  • the green pixel unit is used to emit green light
  • the blue pixel is used to emit blue light.
  • One pixel in the display panel includes a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the gray levels of the red pixel unit, the green pixel unit, and the blue pixel unit are controlled to form The color the user needs.
  • the determination module 11 is configured to determine whether the pixel voltage of the original pixel unit in the display panel is within a preset threshold voltage range to determine whether the display panel has a color shift phenomenon.
  • the determination module 11 detects that the pixel voltage of the blue pixel unit in the display panel is too small, the grayscale of the blue pixel unit is low. At this time, the blue pixel unit in the display panel The displayed blue is relatively dark. Correspondingly, the red displayed by the red pixel unit and the green displayed by the green pixel unit in the display panel are brighter, causing the entire screen displayed by the display panel to be yellowish; if the judgment module 11 detects that the The smaller the pixel voltage of the green pixel unit, the lower the gray scale of the green pixel unit of the display panel. At this time, the green pixel unit in the display panel displays a darker green.
  • the red in the display panel The red displayed by the pixel unit and the blue displayed by the pixel unit are brighter, which will cause the entire screen displayed by the display panel to be magenta. If the determination module 11 detects that the pixel voltage of the red pixel unit of the display panel is too small, As a result, the gray level of the red pixel unit of the display panel is relatively low. At this time, the red pixel unit of the display panel displays a darker red color, Correspondingly, the green and blue pixels displayed by the green pixel unit in the display panel are brighter, and at this time, the screen displayed by the display panel becomes blue.
  • the determination module 11 determines that the display panel does not have a color shift phenomenon during the display screen.
  • the threshold voltage range includes an upper limit value and a lower limit value. If the pixel voltage of the original pixel unit is less than or equal to the upper limit value, and the pixel voltage of the original pixel unit is greater than or equal to the lower limit value, it is determined that the original pixel unit is corresponding to the display.
  • the primary color is normal display, and the screen display of the display panel is normal. At this time, the scanning signal output by the scanning line is normally output, and the signal on the scanning line is not adjusted.
  • the pixel voltage of the original pixel unit in the display panel exceeds the preset threshold voltage range, determine whether the pixel voltage is less than the lower limit value of the preset threshold voltage range or whether the pixel voltage is greater than the upper limit value of the preset threshold voltage range. Specifically, if it is less than the lower limit value of the preset threshold voltage range, it will cause the display panel to have a color shift phenomenon. If the pixel voltage is greater than the upper limit value of the preset threshold voltage range, it may be due to the original pixel unit in the display panel. The pixel voltage is too high due to the long charging time, which burns down the display panel.
  • the signal adjustment module 12 increases the precharge time of the scan signal output by the scan line to improve the original pixel.
  • the pixel voltage of the unit at this time, the gray scale of the original pixel unit increases, and the brightness of the primary color displayed by the corresponding original pixel unit in the display panel also increases.
  • the signal adjustment module 12 reduces the precharge time in the scan signal output by the scan line, the precharge time is reduced, and the pixel voltage of the original pixel unit is reduced.
  • the pixel voltage of the original pixel unit is too high, which causes the display panel to be burned.
  • the signal adjustment module 12 is further configured to increase the duty cycle of the high-level pulse in the scan signal when the pixel voltage is less than the lower limit of the preset threshold voltage range.
  • the signal adjustment module 12 is further configured to: when the pixel voltage is less than a lower limit value of the preset threshold voltage range, add a precharge pulse before a scan pulse in the scan signal.
  • the signal adjustment module 12 adds a precharge pulse before the scan pulse in the original scan signal, so that the original pixel unit can be charged before the pulse in the scan signal turns on the corresponding original pixel unit.
  • the pixel charging rate of the original pixel unit is to formally charge the original pixel unit when a scanning pulse reaches the original pixel unit to turn on the original pixel unit to display a corresponding color brightness.
  • the signal adjustment module 12 is further configured to control the precharge pulse to charge the original pixel unit within a preset interval time before the scan pulse.
  • the signal adjustment module 12 is further configured to: when the pixel voltage is greater than an upper limit value of the preset threshold voltage range, reduce the occupation of high-level pulses in the scanning signals output by the scanning lines. Air ratio.
  • the determination module 11 when the determination module 11 detects that the pixel voltage of the original pixel unit in the display panel is greater than the upper limit value of the preset threshold voltage range, it reduces the total duty cycle of the high-level pulses in the scan signal Reduce the pre-charging time of the scanning signal output by the corresponding scanning line to the original pixel unit.
  • the display panel can be any type of display panel, such as a thin film transistor liquid crystal display (Liquid Transistor Liquid Display, TFT-LCD) technology liquid crystal display panel, a liquid crystal display device (Liquid Crystal Display, LCD) Technology liquid crystal display panel, organic electro-luminescence display (OLED) technology-based organic electro-laser display panel, quantum dot light-emitting diode (Quantum Dot Light Emitting Diodes, QLED) technology-based quantum dot light-emitting diode display panel or curved surface Display panel, etc.
  • TFT-LCD liquid crystal display
  • LCD liquid crystal display device
  • OLED organic electro-luminescence display
  • QLED Quantum Dot Light Emitting Diodes
  • the modules in all embodiments of the present application may be implemented by a universal integrated circuit, such as a Central Processing Unit (CPU), or by an Application Specific Integrated Circuit (ASIC).
  • a universal integrated circuit such as a Central Processing Unit (CPU), or by an Application Specific Integrated Circuit (ASIC).
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • FIG. 5 is a schematic structural diagram of a module of a display device according to an embodiment of the present application.
  • an embodiment of the present application further provides a display device 40 including a display panel 401 and a control unit 402, where the control unit 402 includes the driving system 10 in the foregoing embodiment.
  • the display panel includes 3N scanning lines, N ⁇ 1 and N is a positive integer.
  • the driving system 10 includes:
  • a judging module 11 is configured to determine whether a pixel voltage of an original pixel unit in the display panel is within a preset voltage threshold range, and is also used to determine whether the pixel voltage is less than a lower limit value of the preset threshold voltage range. Or greater than the upper limit of the preset threshold voltage range, the original pixel unit is any one of a red pixel unit, a green pixel unit, and a blue pixel unit;
  • the signal adjustment module 12 is configured to increase a precharge time in a scan signal output by the scan line when the pixel voltage is less than a lower limit value of the preset threshold voltage range, and when the pixel voltage is greater than the When the upper limit value of the threshold voltage range is set, the precharge time in the scan signal output by the scan line is reduced.
  • the original pixel unit in this embodiment includes any one of a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the red pixel unit is used to emit red light
  • the green pixel unit is used to emit green light
  • the blue pixel is used to emit blue light.
  • One pixel in the display panel includes a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the gray levels of the red pixel unit, the green pixel unit, and the blue pixel unit are controlled to form The color the user needs.
  • the determination module 11 is configured to determine whether the pixel voltage of the original pixel unit in the display panel is within a preset threshold voltage range to determine whether the display panel has a color shift phenomenon.
  • the determination module 11 detects that the pixel voltage of the blue pixel unit in the display panel is too small, the grayscale of the blue pixel unit is low. At this time, the blue pixel unit in the display panel The displayed blue is relatively dark. Correspondingly, the red displayed by the red pixel unit and the green displayed by the green pixel unit in the display panel are brighter, causing the entire screen displayed by the display panel to be yellowish; if the judgment module 11 detects that the The smaller the pixel voltage of the green pixel unit, the lower the gray scale of the green pixel unit of the display panel. At this time, the green pixel unit in the display panel displays a darker green.
  • the red in the display panel The red displayed by the pixel unit and the blue displayed by the pixel unit are brighter, which will cause the entire screen displayed by the display panel to be magenta. If the determination module 11 detects that the pixel voltage of the red pixel unit of the display panel is too small, As a result, the gray level of the red pixel unit of the display panel is relatively low. At this time, the red pixel unit of the display panel displays a darker red color, Corresponding, blue green and blue pixels of the green pixel cell display unit of the display panel bright side, this case will result in the display screen of the display panel cyan.
  • the determination module 11 determines that the display panel does not have a color shift phenomenon during the display screen.
  • the preset The threshold voltage range includes an upper limit value and a lower limit value. If the pixel voltage of the original pixel unit is less than or equal to the upper limit value, and the pixel voltage of the original pixel unit is greater than or equal to the lower limit value, it is determined that the original pixel unit is corresponding to the display.
  • the primary color is normal display, and the screen display of the display panel is normal. At this time, the scanning signal output by the scanning line is normally output, and the signal on the scanning line is not adjusted.
  • the pixel voltage of the original pixel unit in the display panel exceeds the preset threshold voltage range, determine whether the pixel voltage is less than the lower limit value of the preset threshold voltage range or whether the pixel voltage is greater than the upper limit value of the preset threshold voltage range. Specifically, if it is less than the lower limit value of the preset threshold voltage range, it will cause the display panel to have a color shift phenomenon. If the pixel voltage is greater than the upper limit value of the preset threshold voltage range, it may be due to the original pixel unit in the display panel. The pixel voltage is too high due to the long charging time, which burns down the display panel.
  • the signal adjustment module 12 increases the precharge time of the scan signal output by the scan line to improve the original pixel.
  • the pixel voltage of the unit at this time, the gray scale of the original pixel unit increases, and the brightness of the primary color displayed by the corresponding original pixel unit in the display panel also increases.
  • the signal adjustment module 12 reduces the precharge time in the scan signal output by the scan line, the precharge time is reduced, and the pixel voltage of the original pixel unit is reduced.
  • the pixel voltage of the original pixel unit is too high, which causes the display panel to be burned.
  • the signal adjustment module 12 is further configured to increase the duty cycle of the high-level pulse in the scan signal when the pixel voltage is less than the lower limit of the preset threshold voltage range.
  • the signal adjustment module 12 is further configured to: when the pixel voltage is less than a lower limit value of the preset threshold voltage range, add a precharge pulse before a scan pulse in the scan signal.
  • the signal adjustment module 12 adds a precharge pulse before the scan pulse in the original scan signal, so that the original pixel unit can be charged before the pulse in the scan signal turns on the corresponding original pixel unit.
  • the pixel charging rate of the original pixel unit is to formally charge the original pixel unit when a scanning pulse reaches the original pixel unit to turn on the original pixel unit to display a corresponding color brightness.
  • the signal adjustment module 12 is further configured to control the precharge pulse to charge the original pixel unit within a preset interval time before the scan pulse.
  • the signal adjustment module 12 is further configured to: when the pixel voltage is greater than an upper limit value of the preset threshold voltage range, reduce the occupation of high-level pulses in the scanning signals output by the scanning lines. Air ratio.
  • the determination module 11 when the determination module 11 detects that the pixel voltage of the original pixel unit in the display panel is greater than the upper limit value of the preset threshold voltage range, it reduces the total duty cycle of the high-level pulses in the scan signal Reduce the pre-charging time of the scanning signal output by the corresponding scanning line to the original pixel unit.
  • the display device may be any type of display device provided with the driving system 10 described above, such as an LCD (Liquid Crystal Display), an OLED (Organic Electroluminesence Display) display device, QLED (Quantum Dot Light Emitting Diodes) display device or curved display device.
  • LCD Liquid Crystal Display
  • OLED Organic Electroluminesence Display
  • QLED Quadantum Dot Light Emitting Diodes
  • the display panel 401 includes an original pixel unit array composed of multiple rows of pixels and multiple columns of pixels.
  • the original pixel unit is any one of a red pixel unit, a green pixel unit, and a blue pixel unit.
  • the display panel includes an original pixel unit array composed of multiple rows of pixels and multiple columns of pixels.
  • the signal adjustment module is further configured to increase the duty cycle of the high-level pulse in the scan signal when the pixel voltage is less than a lower limit value of the preset threshold voltage range.
  • the signal adjustment module is further configured to: when the pixel voltage is less than a lower limit value of the preset threshold voltage range, add a precharge pulse before a scan pulse in the scan signal.
  • the signal adjustment module is further configured to: when the pixel voltage is greater than an upper limit value of the preset threshold voltage range, reduce the level of the high-level pulse in the scan signal output by the scan line. Duty cycle.
  • control unit 402 may be implemented by a general integrated circuit, such as a CPU (Central Processing Unit), or by an ASIC (Application Specific Integrated Circuit, ASIC).
  • a CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit

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Abstract

一种显示面板(401)的驱动方法、系统(10)及显示装置(40)中，当显示面板(401)中的原像素单元的像素电压小于预设阈值电压范围的下限值，则增加扫描线(G1-G6)输出的扫描信号中的预充电时间，若像素电压大于预设阈值电压范围的上限值，则降低扫描线(G1-G6)输出的扫描信号中的预充电时间。

Description

一种显示面板的驱动方法、系统及显示装置 技术领域
本申请实施例属于显示技术领域，尤其涉及一种显示面板的驱动方法、系统及显示装置。
背景技术
随着显示技术的不断发展，液晶面板、显示器等显示设备不断向着轻薄化、大屏化、低功耗、低成本的方向发展。常见的显示产品通常都是通过印制电路板(Printed Circuit Board，PCB)上的时序控制器(Timing Controller，TCON)对驱动信号和扫描控制信号进行处理后，通过源极驱动芯片(Sourece Driver IC)和栅极驱动芯片(Gate Driver IC)输出到显示面板，以实现对显示面板的驱动。
然而，显示面板中可能会因为红色像素单元、绿色像素单元以及蓝色像素单元中的某一种颜色偏暗导致色偏现象，极大地降低了显示面板的画面质量。
申请内容
本申请的一目的在于提供一种显示面板的驱动方法，包括但不限于解决显示面板中可能会因为红色像素单元、绿色像素单元以及蓝色像素单元中的某一种颜色偏暗导致色偏现象，极大地降低了显示面板的画面质量的技术问题。
为了解决上述技术问题，本申请实施例采用的技术方案是：
本申请实施例提出了一种显示面板的驱动方法，所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动方法包括：
判断所述显示面板中的原像素单元的像素电压是否在预设阈值电压范围内；其中，所述原像素单元包括红色像素单元、绿色像素单元和蓝色像素单元中的任意一种；
若所述显示面板中的原像素单元的像素电压不在预设阈值电压范围内，则判断所述像素电压是否小于所述预设阈值电压范围的下限值或大于所述预设阈值电压范围的上限值；
若所述像素电压小于所述预设阈值电压范围的下限值，则增加所述扫描线输出的扫描信号的预充电时间；
若所述像素电压大于所述预设阈值电压范围的上限值，则降低所述扫描线输出的扫描信号的预充电时间。
在一个实施例中，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项。
在一个实施例中，所述增加所述扫描线输出的扫描信号的预充电时间，包括：
增加所述扫描信号中的高电平脉冲的占空比。
在一个实施例中，所述增加所述扫描信号中的高电平脉冲的占空比，包括：
根据所述原像素单元的像素电压确定所述高电平脉冲的占空比。
在一个实施例中，所述增加所述扫描线输出的扫描信号的预充电时间，包括：
在所述扫描信号的扫描脉冲之前增加一个预充电脉冲。
在一个实施例中，所述预充电脉冲用于在所述扫描脉冲之前的预设间隔时间内对所述原像素单元进行充电。
在一个实施例中，所述降低所述扫描信号中的预充电时间，包括：
降低所述扫描信号中的高电平脉冲的占空比。
本申请的另一目的在于提供了一种显示面板的驱动系统，所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动系统包括：
判断模块，用于判断所述显示面板中的原像素单元的像素电压是否在预设电压阈值范围内，还用于判断所述像素电压是否为小于所述预设阈值电压范围的下限值或者大于所述预设阈值电压范围的上限值；
信号调整模块，用于当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描线输出的扫描信号中的预充电时间，当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的预充电时间。
在一个实施例中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描信号中的高电平脉冲的占空比。
在一个实施例中，所述信号调整模块还用于：根据所述原像素单元的像素电压确定所述高电平脉冲的占空比。
在一个实施例中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
在一个实施例中，所述预充电脉冲用于在所述扫描脉冲之前的预设间隔时间内对所述原像素单元进行充电。
在一个实施例中，所述信号调整模块还用于：当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的高电平脉冲的占空比。
本申请的再一目的在于提供一种显示装置，其包括：
显示面板；
以及控制单元，所述控制单元与所述显示面板连接，所述控制单元包括驱动系统；
其中，所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动系统包括：
判断模块，用于判断所述显示面板中的原像素单元的像素电压是否在预设电压阈值范围内，还用于判断所述像素电压是否为小于所述预设阈值电压范围的下限值或者大于所述预设阈值电压范围的上限值；
信号调整模块，用于当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描线输出的扫描信号中的预充电时间，当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的预充电时间。
在一个实施例中，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项。
在一个实施例中，所述显示面板包括由多行像素和多列像素组成的原像素单元阵列。
在一个实施例中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描信号中的高电平脉冲的占空比。
在一个实施例中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
在一个实施例中，所述信号调整模块还用于：当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的高电平脉冲的占空比。
本申请实施例提出的一种显示面板的驱动方法、系统及显示装置中，通过判断所述显示面板中的原像素单元的像素电压是否在预设阈值电压范围内，若是，则不对所述扫描线输出的扫描信号进行处理，若否，则判断所述像素电压是否为小于所述预设阈值电压范围的下限值或者大于所述预设阈值电压范围的上限值，若所述像素电压小于所述预设阈值电压范围的下限值，则增加所述扫描线输出的扫描信号中的预充电时间，若所述像素电压大于所述预设阈值电压范围的上限值，则降低所述扫描线输出的扫描信号中的预充电时间，从而实现对显示面板中的原像素单元的亮度进行调整，解决了现有的显示面板中可能会因为红色像素单元、绿色像素单元以及蓝色像素单元中的某一种颜色偏暗导致色偏现象，极大地降低了显示面板的画面质量的问题。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，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为本申请的一个实施例提供的显示面板的驱动方法的流程示意图；
图2为本申请的一个本实施例提供的数据信号与扫描线输出的扫描信号的驱动序列示意图；
图3为本申请的另一个实施例中的扫描信号与数据信号的波形图；
图4为本申请的一个实施例提出的显示面板的驱动系统的结构示意图；
图5为本申请的一个实施例提供的一种显示装置的模块结构示意图。
本申请的实施方式
为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。
本申请的说明书和权利要求书及上述附图中的术语“包括”以及它们任何变形，意图在于覆盖不排他的包含。例如包含一系列步骤或单元的过程、方法或系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。此外，术语“第一”、“第二”和“第三”等是用于区别不同对象，而非用于描述特定顺序。
显示面板通常根据功能模块的作用不同需要不同供电电压，这些供电电压均可以通过电源管理芯片提供，为了避免电源管理芯片输出的电压输出信号过大，在电源管理芯片内部设置有过流保护机制，例如，薄膜晶体管液晶显示面板需要多种电压信号，多个电压信号的电压值各不相同，为了对薄膜晶体管液晶显示面板提供多种电压芯片，通常采用一颗电源管理芯片提供不同的电压输出信号，为了避免电源管理芯片输出的电压输出信号过大烧毁薄膜晶体管液晶显示面板，在电源管理芯片内部设置有过流保护机制。
目前液晶显示器(Liquid Crystal Display,LCD)是最广泛使用的显示器之一，LCD包括设置有场发生电极的一对面板以及设置在两个面板之间的液晶层，该场发生电极如像素电极和公共电极等，通过在场发生电极上施加电压从而在液晶层中产生电场，液晶分子在电场作用下进行偏转，由此可以控制光的透过情况使LCD显示图像。三维晶体管(Tri-gate)驱动架构，将数据线(data line)降为正常驱动架构的1/3，扫描线(gate line)增加为正常驱动架构的3倍，所以Tri-gate驱动架构的数据覆晶薄膜降为正常驱动架构的1/3，从而极大的节约了面板制造成本。在本申请实施例中，显示面板包括3N条扫描线，N≥1且N为正整数。
图1为本申请的一个实施例提供的显示面板的驱动方法的流程示意图。
如图1所示，本实施例中的驱动方法包括：
判断所述显示面板中的原像素单元的像素电压是否在预设阈值电压范围内；
可选的，若所述显示面板中的原像素单元的像素电压不在预设阈值电压范围内，则判断所述像素电压是否小于所述预设阈值电压范围的下限值或大于所述预设阈值电压范围的上限值；
可选的，若所述像素电压小于所述预设阈值电压范围的下限值，则增加所述扫描线输出的扫描信号的预充电时间；
可选的，若所述像素电压大于所述预设阈值电压范围的上限值，则降低所述扫描线输出的扫描信号的预充电时间。
本实施例中的原像素单元包括红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项，红色像素单元用于发射红色的光，绿色像素单元用于发射绿色的光，蓝色像素单元用于发射蓝色的光，显示面板中的一个像素包括红色像素单元、绿色像素单元以及蓝色像素单元，通过分别控制红色像素单元、绿色像素单元以及蓝色像素单元的灰阶度，形成用户所需要的颜色。
在一个实施例中，通过判断显示面板中的原像素单元的像素电压是否在预设阈值电压范围内以判断显示面板是否有色偏现象，具体的，例如，若显示面板中的蓝色像素单元的像素电压偏小，则会导致蓝色像素单元的灰阶度较低，此时，显示面板中的蓝色像素单元显示的蓝色较暗，相对应的，显示面板中红色像素单元显示的红色和绿色像素单元显示的绿色则较亮，导致显示面板显示的整个画面偏黄；若显示面板的绿色像素单元的像素电压偏小，则会导致显示面板的绿色像素单元的灰阶度较低，此时，显示面板中的绿色像素单元显示的绿色偏暗，相对应的，显示面板中的红色像素单元显示的红色和蓝色像素单元显示的蓝色较亮，则会导致显示面板所显示的整个画面偏洋红；若显示面板的红色像素单元的像素电压偏小，则会导致显示面板的红色像素单元的灰阶度较低，此时，显示面板中的红色像素单元显示出的红色偏暗，相对应的，显示面板中的绿色像素单元显示的绿色和蓝色像素单元显示的蓝色偏亮，此时，会导致显示面板显示的画面偏青。
在本实施例中，若显示面板中的原像素单元的像素电压在预设阈值电压范围内，则判断显示面板在显示画面过程中没有发生色偏现象，具体的，预设阈值电压范围包括上限值和下限值，若原像素单元的像素电压小于或等于上限值，同时，原像素单元的像素电压大于或等于下限值，则判定该原像素单元在显示对应的原色时为正常显示，显示面板的画面显示正常，此时，扫描线输出的扫描信号正常输出，不对扫描线上的信号进行调整。
在一个实施例中，若显示面板中的原像素单元的像素电压超出了预设阈值电压范围，则判断像素电压是否为小于预设阈值电压范围的下限值或者像素电压是否大于预设阈值电压范围的上限值，具体的，若小于预设阈值电压范围的下限值，则会导致显示面板产生色偏现象，若像素电压大于预设阈值电压范围的上限值，则可能会因为显示面板中的原像素单元由于充电时间过长而导致像素电压过大，烧毁显示面板。
在一个实施例中，当检测到显示面板中的原像素单元的像素电压小于预设阈值电压范围的下限值，则增加扫描线输出的扫描信号的预充电时间，以提升原像素单元的像素电压， 此时，原像素单元的灰阶度增加，显示面板中的相应的原像素单元显示出的原色的亮度也增加。若原像素单元的像素电压大于预设阈值电压范围的上限值，则降低扫描线输出的扫描信号中的预充电时间，预充电时间降低，原像素单元的像素电压降低，则避免了原像素单元的像素电压过高而导致烧毁显示面板。
图2为本申请的一个本实施例提供的数据信号与扫描线输出的扫描信号的驱动序列示意图。
如图2所示，所述增加所述扫描线输出的扫描信号中的预充电时间包括：增加所述扫描信号中的高电平脉冲的占空比。
在本实施例中，通过增加显示面板中扫描线输出的扫描信号中的高电平脉冲的占空比总和提升原像素单元的充电时间，即在原有的扫描脉冲上增加高电平脉冲的占空比，通过这种预充电的方式提高该原像素单元的像素充电率，使得该原像素单元显示的原色更亮，从而达到改善显示面板色偏的目的.
在一个实施例中，扫描信号中的高电平脉冲的占空比可以根据检测到该原像素单元的像素电压的电压值进行确定，若检测到该原像素单元的像素电压越低，则扫描信号中的高电平脉冲的占空比越高。在图2中，G1、G2、G3、G4、G5以及G6分别是两行像素的扫描线，其中，G1、G2、G3是第一组像素中的红色像素单元、绿色像素单元以及蓝色像素单元的扫描线，G4、G5以及G6是第二组像素中的红色像素单元、绿色像素单元以及蓝色像素单元的扫描线，Data为显示面板中的数据信号的波形，如图2所示，图2为绿色像素单元的像素电压小于预设阈值电压范围的下限值时，通过调整绿色像素单元的扫描线输出的扫描信号中的高电平脉冲的占空比总和，以提升显示面板中绿色像素单元的预充电时间，使显示面板中的绿色像素单元显示的绿色更亮。
在一个实施例中，所述增加所述扫描线输出的扫描信号中的预充电时间包括：在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
在本实施例中，通过在原有的扫描信号中的扫描脉冲之前增加一个预充电脉冲，可以在扫描信号中的脉冲打开相应的原像素单元之前对该原像素单元进行充电，提高该原像素单元的像素充电率，在扫描脉冲到达该原像素单元时对该原像素单元进行正式充电以打开该原像素单元显示相应的颜色亮度。
在一个实施例中，所述预充电脉冲用于在所述扫描脉冲之前的预设间隔时间内对所述原像素单元进行充电。
图3为本申请的另一个实施例中的扫描信号与数据信号的波形图。
在一个实施例中，图3为绿色像素单元的像素电压小于预设阈值电压范围的下限值时，在绿色像素单元对应的扫描线输出的扫描脉冲之前，提前预设时间间隔设置预充电脉冲的 示意图，如图3所示，预充电脉冲提前预设时间间隔对该绿色像素单元进行预充电，以提高绿色像素单元的像素充电率，在扫描脉冲到达该绿色像素单元时对该绿色像素单元进行正式充电。
在一个实施例中，所述降低所述扫描信号中的预充电时间包括：降低所述扫描信号中的高电平脉冲的占空比。
在本实施例中，当检测到显示面板中的原像素单元的像素电压大于预设阈值电压范围的上限值时，则通过降低扫描信号中的高电平脉冲的占空比总和降低对应的扫描线输出的扫描信号对该原像素单元的预充电时间。
本申请实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
图4为本申请的一个实施例提出的显示面板的驱动系统的结构示意图。
所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动系统10包括：
判断模块11，用于判断所述显示面板中的原像素单元的像素电压是否在预设电压阈值范围内，还用于判断所述像素电压是否为小于所述预设阈值电压范围的下限值或者大于所述预设阈值电压范围的上限值，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项；
信号调整模块12，用于当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描线输出的扫描信号中的预充电时间，当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的预充电时间。
本实施例中的原像素单元包括红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项，红色像素单元用于发射红色的光，绿色像素单元用于发射绿色的光，蓝色像素单元用于发射蓝色的光，显示面板中的一个像素包括红色像素单元、绿色像素单元以及蓝色像素单元，通过分别控制红色像素单元、绿色像素单元以及蓝色像素单元的灰阶度，形成用户所需要的颜色。在本实施例中，判断模块11用于判断显示面板中的原像素单元的像素电压是否在预设阈值电压范围内以判断显示面板是否有色偏现象。
具体的，例如，若判断模块11检测到显示面板中的蓝色像素单元的像素电压偏小，则会导致蓝色像素单元的灰阶度较低，此时，显示面板中的蓝色像素单元显示的蓝色较暗，相对应的，显示面板中红色像素单元显示的红色和绿色像素单元显示的绿色则较亮，导致 显示面板显示的整个画面偏黄；若判断模块11检测到显示面板的绿色像素单元的像素电压偏小，则会导致显示面板的绿色像素单元的灰阶度较低，此时，显示面板中的绿色像素单元显示的绿色偏暗，相对应的，显示面板中的红色像素单元显示的红色和蓝色像素单元显示的蓝色较亮，则会导致显示面板所显示的整个画面偏洋红；若判断模块11检测到显示面板的红色像素单元的像素电压偏小，则会导致显示面板的红色像素单元的灰阶度较低，此时，显示面板中的红色像素单元显示出的红色偏暗，相对应的，显示面板中的绿色像素单元显示的绿色和蓝色像素单元显示的蓝色偏亮，此时，会导致显示面板显示的画面偏青。
在本实施例中，若检测到显示面板中的原像素单元的像素电压在预设阈值电压范围内，判断模块11则判断显示面板在显示画面过程中没有发生色偏现象，具体的，预设阈值电压范围包括上限值和下限值，若原像素单元的像素电压小于或等于上限值，同时，原像素单元的像素电压大于或等于下限值，则判定该原像素单元在显示对应的原色时为正常显示，显示面板的画面显示正常，此时，扫描线输出的扫描信号正常输出，不对扫描线上的信号进行调整。
若显示面板中的原像素单元的像素电压超出了预设阈值电压范围，则判断像素电压是否为小于预设阈值电压范围的下限值或者像素电压是否大于预设阈值电压范围的上限值，具体的，若小于预设阈值电压范围的下限值，则会导致显示面板产生色偏现象，若像素电压大于预设阈值电压范围的上限值，则可能会因为显示面板中的原像素单元由于充电时间过长而导致像素电压过大，烧毁显示面板。
在本实施例中，当检测到显示面板中的原像素单元的像素电压小于预设阈值电压范围的下限值，信号调整模块12增加扫描线输出的扫描信号的预充电时间，以提升原像素单元的像素电压，此时，原像素单元的灰阶度增加，显示面板中的相应的原像素单元显示出的原色的亮度也增加。若原像素单元的像素电压大于预设阈值电压范围的上限值，信号调整模块12则降低扫描线输出的扫描信号中的预充电时间，预充电时间降低，原像素单元的像素电压降低，则避免了原像素单元的像素电压过高而导致烧毁显示面板。
在一个实施例中，信号调整模块12还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描信号中的高电平脉冲的占空比。
在一个实施例中，信号调整模块12还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
在本实施例中，信号调整模块12通过在原有的扫描信号中的扫描脉冲之前增加一个预充电脉冲，可以在扫描信号中的脉冲打开相应的原像素单元之前对该原像素单元进行充电，提高该原像素单元的像素充电率，在扫描脉冲到达该原像素单元时对该原像素单元进行正式充电以打开该原像素单元显示相应的颜色亮度。
在一个实施例中，信号调整模块12还用于：控制所述预充电脉冲在所述扫描脉冲之前的预设间隔时间内对所述原像素单元进行充电。
在一个实施例中，信号调整模块12还用于：当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的高电平脉冲的占空比。
在本实施例中，当判断模块11检测到显示面板中的原像素单元的像素电压大于预设阈值电压范围的上限值时，则通过降低扫描信号中的高电平脉冲的占空比总和降低对应的扫描线输出的扫描信号对该原像素单元的预充电时间。
在具体应用中，显示面板可以为任意类型的显示面板，例如基于薄膜晶体管液晶显示器(Thin Film Transistor Liquid Crystal Display，TFT-LCD)技术的液晶显示面板、基于液晶显示装置(Liquid Crystal Display，LCD)技术的液晶显示面板、基于有机电激光显示(Organic Electroluminesence Display，OLED)技术的有机电激光显示面板、基于量子点发光二极管(Quantum Dot Light Emitting Diodes，QLED)技术的量子点发光二极管显示面板或曲面显示面板等。
本申请所有实施例中的模块，可以通过通用集成电路，例如中央处理器(Central Processing Unit，CPU)，或通过专用集成电路(Application Specific Integrated Circuit，ASIC)来实现。
图5为本申请的一个实施例提供的一种显示装置的模块结构示意图。
如图5所示，本申请的一个实施例还提供一种显示装置40，其包括显示面板401以及控制单元402，其中，控制单元402包括上述实施例中的驱动系统10。
所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动系统10包括：
判断模块11，用于判断所述显示面板中的原像素单元的像素电压是否在预设电压阈值范围内，还用于判断所述像素电压是否为小于所述预设阈值电压范围的下限值或者大于所述预设阈值电压范围的上限值，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项；
信号调整模块12，用于当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描线输出的扫描信号中的预充电时间，当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的预充电时间。
本实施例中的原像素单元包括红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项，红色像素单元用于发射红色的光，绿色像素单元用于发射绿色的光，蓝色像素单元用于发射蓝色的光，显示面板中的一个像素包括红色像素单元、绿色像素单元以及蓝色像素单元，通过分别控制红色像素单元、绿色像素单元以及蓝色像素单元的灰阶度，形成用户所需要的颜色。在本实施例中，判断模块11用于判断显示面板中的原像素单元的像素 电压是否在预设阈值电压范围内以判断显示面板是否有色偏现象。
具体的，例如，若判断模块11检测到显示面板中的蓝色像素单元的像素电压偏小，则会导致蓝色像素单元的灰阶度较低，此时，显示面板中的蓝色像素单元显示的蓝色较暗，相对应的，显示面板中红色像素单元显示的红色和绿色像素单元显示的绿色则较亮，导致显示面板显示的整个画面偏黄；若判断模块11检测到显示面板的绿色像素单元的像素电压偏小，则会导致显示面板的绿色像素单元的灰阶度较低，此时，显示面板中的绿色像素单元显示的绿色偏暗，相对应的，显示面板中的红色像素单元显示的红色和蓝色像素单元显示的蓝色较亮，则会导致显示面板所显示的整个画面偏洋红；若判断模块11检测到显示面板的红色像素单元的像素电压偏小，则会导致显示面板的红色像素单元的灰阶度较低，此时，显示面板中的红色像素单元显示出的红色偏暗，相对应的，显示面板中的绿色像素单元显示的绿色和蓝色像素单元显示的蓝色偏亮，此时，会导致显示面板显示的画面偏青。
在本实施例中，若检测到显示面板中的原像素单元的像素电压在预设阈值电压范围内，判断模块11则判断显示面板在显示画面过程中没有发生色偏现象，具体的，预设阈值电压范围包括上限值和下限值，若原像素单元的像素电压小于或等于上限值，同时，原像素单元的像素电压大于或等于下限值，则判定该原像素单元在显示对应的原色时为正常显示，显示面板的画面显示正常，此时，扫描线输出的扫描信号正常输出，不对扫描线上的信号进行调整。
若显示面板中的原像素单元的像素电压超出了预设阈值电压范围，则判断像素电压是否为小于预设阈值电压范围的下限值或者像素电压是否大于预设阈值电压范围的上限值，具体的，若小于预设阈值电压范围的下限值，则会导致显示面板产生色偏现象，若像素电压大于预设阈值电压范围的上限值，则可能会因为显示面板中的原像素单元由于充电时间过长而导致像素电压过大，烧毁显示面板。
在本实施例中，当检测到显示面板中的原像素单元的像素电压小于预设阈值电压范围的下限值，信号调整模块12增加扫描线输出的扫描信号的预充电时间，以提升原像素单元的像素电压，此时，原像素单元的灰阶度增加，显示面板中的相应的原像素单元显示出的原色的亮度也增加。若原像素单元的像素电压大于预设阈值电压范围的上限值，信号调整模块12则降低扫描线输出的扫描信号中的预充电时间，预充电时间降低，原像素单元的像素电压降低，则避免了原像素单元的像素电压过高而导致烧毁显示面板。
在一个实施例中，信号调整模块12还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描信号中的高电平脉冲的占空比。
在一个实施例中，信号调整模块12还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
在本实施例中，信号调整模块12通过在原有的扫描信号中的扫描脉冲之前增加一个预充电脉冲，可以在扫描信号中的脉冲打开相应的原像素单元之前对该原像素单元进行充电，提高该原像素单元的像素充电率，在扫描脉冲到达该原像素单元时对该原像素单元进行正式充电以打开该原像素单元显示相应的颜色亮度。
在一个实施例中，信号调整模块12还用于：控制所述预充电脉冲在所述扫描脉冲之前的预设间隔时间内对所述原像素单元进行充电。
在一个实施例中，信号调整模块12还用于：当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的高电平脉冲的占空比。
在本实施例中，当判断模块11检测到显示面板中的原像素单元的像素电压大于预设阈值电压范围的上限值时，则通过降低扫描信号中的高电平脉冲的占空比总和降低对应的扫描线输出的扫描信号对该原像素单元的预充电时间。
在一个实施例中，显示装置可以为设置有上述驱动系统10的任意类型的显示装置，例如LCD(Liquid Crystal Display，液晶显示装置)、OLED(Organic Electroluminesence Display，有机电激光显示)显示装置、QLED(Quantum Dot Light Emitting Diodes，量子点发光二极管)显示装置或曲面显示装置等。
在一个实施例中，显示面板401包括由多行像素和多列像素组成的原像素单元阵列。
在一个实施例中，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项。
在一个实施例中，所述显示面板包括由多行像素和多列像素组成的原像素单元阵列。
在一个实施例中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描信号中的高电平脉冲的占空比。
在一个实施例中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
在一个实施例中，所述信号调整模块还用于：当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的高电平脉冲的占空比。
在一个实施例中，控制单元402，可以通过通用集成电路，例如CPU(Central Processing Unit，中央处理器)，或通过ASIC(Application Specific Integrated Circuit，专用集成电路)来实现。
以上所述仅为本申请的可选实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (20)

  1. 一种显示面板的驱动方法，所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动方法包括：
    判断所述显示面板中的原像素单元的像素电压是否在预设阈值电压范围内；
    若所述显示面板中的原像素单元的像素电压不在预设阈值电压范围内，则判断所述像素电压是否小于所述预设阈值电压范围的下限值或大于所述预设阈值电压范围的上限值；
    若所述像素电压小于所述预设阈值电压范围的下限值，则增加所述扫描线输出的扫描信号的预充电时间；
    若所述像素电压大于所述预设阈值电压范围的上限值，则降低所述扫描线输出的扫描信号的预充电时间。
  2. 如权利要求1所述的驱动方法，其中，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项。
  3. 如权利要求1所述的驱动方法，所述增加所述扫描线输出的扫描信号的预充电时间，包括：
    增加所述扫描信号中的高电平脉冲的占空比。
  4. 如权利要求3所述的驱动方法，所述增加所述扫描信号中的高电平脉冲的占空比，包括：
    根据所述原像素单元的像素电压确定所述高电平脉冲的占空比。
  5. 如权利要求1所述的驱动方法，所述增加所述扫描线输出的扫描信号的预充电时间，包括：
    在所述扫描信号的扫描脉冲之前增加一个预充电脉冲。
  6. 如权利要求5所述的驱动方法，所述预充电脉冲用于在所述扫描脉冲之前的预设间隔时间内对所述原像素单元进行充电。
  7. 如权利要求1所述的驱动方法，所述降低所述扫描信号中的预充电时间，包括：
    降低所述扫描信号中的高电平脉冲的占空比。
  8. 一种显示面板的驱动系统，所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动系统包括：
    判断模块，用于判断所述显示面板中的原像素单元的像素电压是否在预设电压阈值范围内，还用于判断所述像素电压是否为小于所述预设阈值电压范围的下限值或者大于所述预设阈值电压范围的上限值；
    信号调整模块，用于当所述像素电压小于所述预设阈值电压范围的下限值时，增加所 述扫描线输出的扫描信号中的预充电时间，当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的预充电时间。
  9. 如权利要求8所述的驱动系统，其中，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项。
  10. 如权利要求8所述的驱动系统，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描信号中的高电平脉冲的占空比。
  11. 如权利要求10所述的驱动系统，所述信号调整模块还用于：根据所述原像素单元的像素电压确定所述高电平脉冲的占空比。
  12. 如权利要求8所述的驱动系统，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
  13. 如权利要求12所述的驱动系统，所述预充电脉冲用于在所述扫描脉冲之前的预设间隔时间内对所述原像素单元进行充电。
  14. 如权利要求8所述的驱动系统，所述信号调整模块还用于：当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的高电平脉冲的占空比。
  15. 一种显示装置，包括：
    显示面板；以及
    控制单元，所述控制单元与所述显示面板连接，所述控制单元包括驱动系统；
    其中，所述显示面板包括3N条扫描线，N≥1且N为正整数，所述驱动系统包括：
    判断模块，用于判断所述显示面板中的原像素单元的像素电压是否在预设电压阈值范围内，还用于判断所述像素电压是否为小于所述预设阈值电压范围的下限值或者大于所述预设阈值电压范围的上限值；
    信号调整模块，用于当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描线输出的扫描信号中的预充电时间，当所述像素电压大于所述预设阈值电压范围的上限值时，降低扫描线输出的扫描信号中的预充电时间。
  16. 如权利要求15所述的显示装置，其中，所述原像素单元为红色像素单元、绿色像素单元以及蓝色像素单元中的任意一项。
  17. 如权利要求15所述的显示装置，其中，所述显示面板包括由多行像素和多列像素组成的原像素单元阵列。
  18. 如权利要求15所述的显示装置，其中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，增加所述扫描信号中的高电平脉冲的占空比。
  19. 如权利要求15所述的显示装置，其中，所述信号调整模块还用于：当所述像素电压小于所述预设阈值电压范围的下限值时，在所述扫描信号中的扫描脉冲之前增加一个预充电脉冲。
  20. 如权利要求15所述的显示装置，所述信号调整模块还用于：当所述像素电压大于所述预设阈值电压范围的上限值时，降低所述扫描线输出的扫描信号中的高电平脉冲的占空比。
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