WO2019080165A1 - 一种显示装置的驱动方法和驱动系统 - Google Patents

一种显示装置的驱动方法和驱动系统

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Publication number
WO2019080165A1
WO2019080165A1 PCT/CN2017/109746 CN2017109746W WO2019080165A1 WO 2019080165 A1 WO2019080165 A1 WO 2019080165A1 CN 2017109746 W CN2017109746 W CN 2017109746W WO 2019080165 A1 WO2019080165 A1 WO 2019080165A1
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WIPO (PCT)
Prior art keywords
sub
scan line
polarity
pixels
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/109746
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English (en)
French (fr)
Inventor
黄北洲
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HKC Co Ltd
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HKC Co Ltd
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Publication date
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Priority to US16/758,851 priority Critical patent/US20210201729A1/en
Publication of WO2019080165A1 publication Critical patent/WO2019080165A1/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
    • G09G3/3674—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
    • 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
    • G09G3/3614—Control of polarity reversal in general
    • 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]
    • G09G3/3266—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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • 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
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
    • 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
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0254—Control of polarity reversal in general, other than for liquid crystal displays
    • 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
    • G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the embodiments of the present application belong to the field of display technologies, and in particular, to a display device, a driving method thereof, and a driving system.
  • the dual gate driving architecture is widely used in the driving of liquid crystal display panels, and the number of gate lines of the double gate driving architecture is doubled and the data lines are compared with the conventional driving architecture.
  • the number of (data lines) is halved, resulting in a corresponding reduction in the number of source driver chips, which reduces manufacturing costs.
  • the sub-pixels with polarity inversion are caused to be dark due to insufficient charging time, thereby causing light and dark stripes or mesh phenomena in the display device.
  • the embodiment of the present invention provides a display device, a driving method thereof, and a driving system, which are designed to solve the charging time of a sub-pixel that causes polarity inversion when the charging polarity of the row sub-pixels is reversed in the dual-gate driving architecture. Insufficient and dark, causing problems with light and dark stripes or mesh phenomena in the display device.
  • the embodiment of the present application provides a driving method of a display panel, and a driving method of the display device.
  • the display device includes a plurality of scanning lines, and each of the scanning lines is connected to a row of sub-pixels, and the driving method includes:
  • the detecting whether the polarity of the scan signal input by the current scan line is reversed comprises:
  • the display device further includes a gate driving module, and the gate driving module is connected to the plurality of scan lines;
  • the extending the time for charging the current scan line includes:
  • the duty ratio of the enable signal output to the gate drive module is increased to extend the time for charging the current scan line, and the enable signal corresponds to the current scan line.
  • the display device includes a display panel driven by a two-line inversion mode, the display panel being connected to the plurality of scan lines;
  • the current scan line is an odd line scan line, charging the current scan line for a first preset time
  • the current scan line is an even line scan line, charging the current scan line for a second preset time
  • the first preset time is > the second preset time.
  • the display device includes a display panel composed of a plurality of rows of sub-pixels, each row of sub-pixels in the display panel includes a plurality of sets of sub-pixels, each set of sub-pixels including a first color arranged in sequence
  • the sub-pixel, the second color sub-pixel, and the third color sub-pixel, the sub-pixels in the same column have the same color, and at least one of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel is a red sub-pixel
  • At least one is a green sub-pixel and at least one is a blue sub-pixel.
  • all of the sub-pixels in the display panel are connected by a connection of a dual gate drive architecture.
  • the display panel is driven by a two-wire inversion.
  • the polarity of two adjacent sub-pixels is the first polarity and the polarity of the other sub-pixel is the second polarity, and each of the same row of sub-pixels The polarity of the two sub-pixels is inverted once; in the same column of sub-pixels, the polarity of the adjacent sub-pixels is different.
  • one of the first polarity and the second polarity is positive polarity and one is negative Sex.
  • the embodiment of the present application further provides a driving system for a display device, where the display device includes a plurality of scan lines, each of which is connected to a row of sub-pixels, and the driving system includes:
  • a polarity detecting unit configured to detect whether a polarity of a scan signal input by the current scan line is reversed
  • the delay unit is configured to extend the time for charging the current scan line if the polarity of the scan signal input by the current scan line is reversed.
  • the polarity detecting unit specifically includes:
  • a comparison unit configured to compare whether the polarity of the scan signal input by the previous scan line and the current scan line is the same
  • the determining unit is configured to determine that the polarity of the scan signal input by the current scan line is inverted if the polarity of the scan signal input by the previous scan line and the current scan line is different.
  • the display device further includes a gate driving module, and the gate driving module is connected to the plurality of scan lines;
  • the delay unit is specifically configured to:
  • the duty ratio of the enable signal output to the gate drive module is increased to extend the time for charging the current scan line, and the enable signal corresponds to the current scan line.
  • the display device includes a display panel driven by a two-line inversion mode, the display panel being connected to the plurality of scan lines;
  • the delay unit includes:
  • the current scan line is an odd line scan line, charging the current scan line for a first preset time
  • the current scan line is an even line scan line, charging the current scan line for a second preset time
  • the first preset time is > the second preset time.
  • the embodiment of the present application further provides a driving method of a display device, where the display device includes a plurality of scan lines and a gate driving module, each of the scan lines is correspondingly connected to a row of sub-pixels, and the gate driving module and the plurality of strips Scan line connection, the driving method includes:
  • the duty ratio of the enable signal output to the gate drive module is increased to prolong the charging of the current scan line.
  • the enable signal corresponds to the current scan line.
  • the display device includes a display panel composed of a plurality of rows of sub-pixels, all of the sub-pixels in the display panel are connected by a connection of a dual gate driving architecture and driven by a two-wire inversion manner.
  • the sub-pixels on the scan line can be normally charged to achieve normal display, and the light and dark stripes or the mesh phenomenon of the display device can be effectively eliminated.
  • FIG. 1 is a schematic diagram of a display device based on a dual gate driving architecture provided by an example of the present application
  • FIG. 2 is a schematic flow chart of a driving method of a display device according to an embodiment of the present application
  • step S20 is a schematic flowchart of step S20 provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a control signal and a scan signal provided by an embodiment of the present application.
  • FIG. 5 is a structural block diagram of a driving system of a display device according to an embodiment of the present application.
  • FIG. 6 is a structural block diagram of a delay unit provided by an embodiment of the present application.
  • FIG. 7 is a structural block diagram of a display device according to an embodiment of the present application.
  • an example of the present application provides a dual gate driving architecture-based display device 100 including a source driving module 110 , a gate driving module 120 , and a display panel 130 .
  • the display panel 130 includes m Rows x n columns of sub-pixels, each row of sub-pixels is connected to a scan line, where m ⁇ 1, n ⁇ 1 and m and n are positive integers.
  • the source driver module can be any device or circuit having a data driving function on a pixel of the display panel, for example, a source driver IC or a thin film source driver chip (S-COF, Source-Chip on Film).
  • a source driver IC or a thin film source driver chip (S-COF, Source-Chip on Film).
  • the gate driving module can be any device or circuit having a function of scanning and charging pixels of the display panel, for example, a gate driver chip (Gate Driver IC) or a thin film gate driver chip (G-COF, Gate-Chip on Film).
  • a gate driver chip Gate Driver IC
  • G-COF Gate-Chip on Film
  • each row of sub-pixels in the display panel includes a plurality of sets of sub-pixels, each set of sub-pixels including a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel arranged in sequence, in the same column
  • the sub-pixels have the same color, and at least one of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel is a red sub-pixel, at least one of which is a green sub-pixel and at least one of which is a blue sub-pixel.
  • the display panel adopts a dual gate driving architecture combined with a two-line inversion mode. Therefore, among the three sub-pixels of each group, the polarity of two adjacent sub-pixels must be The polarity of the first polarity and the other sub-pixel is the second polarity, one of the first polarity and the second polarity is positive polarity, one is negative polarity, and every second sub-pixel in the same row of sub-pixels The polarity is inverted once; in the same column of sub-pixels, the polarity of adjacent sub-pixels is different.
  • a display panel 130 including 4 rows by 8 columns of sub-pixels is exemplarily shown in FIG. In Fig. 1, "+" indicates positive polarity and "-" indicates negative polarity.
  • the number of electrode gate lines of the above double gate driving architecture is doubled, and the number of data lines is halved, thereby making the source driving chip (source)
  • the number of ICs is also reduced accordingly, reducing manufacturing costs.
  • the sub-pixels in which the polarity inversion occurs may be dark due to insufficient charging time, thereby causing the display device to have a light-dark stripe or a mesh phenomenon.
  • an embodiment of the present application provides a driving method of a display device, including:
  • Step S10 Detect whether the polarity of the scan signal input by the current scan line is inverted.
  • step S10 includes:
  • Step S20 If the polarity of the scan signal input by the current scan line is reversed, the time for charging the current scan line is prolonged.
  • the charging time can be adjusted by changing the duty ratio of the enable signal output to the gate driving module.
  • the larger the duty ratio the longer the charging time, and conversely, the shorter the charging time.
  • step S20 includes:
  • the duty ratio of the enable signal output to the gate drive module is increased to prolong the charging of the current scan line.
  • the enable signal corresponds to the current scan line.
  • the above driving method actually The above can be applied to all display devices in which the sub-pixel charging polarity is reversed, and is not limited to the display device based on the dual gate driving architecture.
  • the sub-pixels on the scan line can be normally charged to achieve normal display, and the light and dark stripes or the mesh phenomenon of the display device can be effectively eliminated.
  • step S20 when the above driving method is applied to a display device driven by a two-line inversion method based on a dual gate architecture; step S20 includes:
  • Step S21 If the current scan line is an odd line scan line, charging the current scan line for a first preset time;
  • Step S22 If the current scan line is an even line scan line, charging the current scan line for a second preset time;
  • the first preset time is > the second preset time.
  • the charging polarity of the sub-pixels is reversed in odd rows, and therefore, it is necessary to extend the charging time of the odd-line scanning lines, so that The charging time of the odd-line scan lines is greater than the charging time of the even-line scan lines, so that the odd-numbered rows of sub-pixels are displayed at normal brightness, thereby ensuring normal display of the display device.
  • FIG. 4 a schematic diagram showing various control signals output to the gate driving module and scan signals outputted by the gate driving module to the respective scanning lines is exemplarily shown.
  • STV represents a shift register control signal of the gate driving module
  • CKV represents a clock signal
  • OE1 represents an enable signal for adjusting the charging time of the odd-line scanning lines
  • OE2 represents charging time for the even-numbered scanning lines.
  • the adjusted enable signals, G1 to G4 respectively represent the scan signals on the four scan lines G1 to G4.
  • An embodiment of the present application further provides a driving method of a display device, which is implemented based on the method steps in the embodiment corresponding to FIG. 2 and FIG. 3, the driving method includes:
  • the duty ratio of the enable signal output to the gate drive module is increased to prolong the charging of the current scan line.
  • the enable signal corresponds to the current scan line.
  • an embodiment of the present application provides a driving system 200 for a display device for performing the method steps in the embodiment corresponding to FIG. 2, including:
  • the polarity detecting unit 10 is configured to detect whether the polarity of the scan signal input by the current scan line is reversed;
  • the delay unit 20 is configured to extend the time for charging the current scan line if the polarity of the scan signal input by the current scan line is reversed.
  • the drive system 200 may specifically be a software program system in a control module of the display device.
  • the polarity detecting unit 20 includes:
  • a comparison unit configured to compare whether the polarity of the scan signal input by the previous scan line and the current scan line is the same
  • the determining unit is configured to determine that the polarity of the scan signal input by the current scan line is inverted if the polarity of the scan signal input by the previous scan line and the current scan line is different.
  • the charging time can be adjusted by changing the duty ratio of the enable signal output to the gate driving module.
  • the larger the duty ratio the longer the charging time, and conversely, the shorter the charging time.
  • the delay unit 20 can also implement the delay by other feasible means, for example, can be used for:
  • the duty ratio of the enable signal output to the gate drive module is increased to extend the time for charging the current scan line, and the enable signal corresponds to the current scan line.
  • the above-mentioned driving system actually The above can be applied to all display devices in which the sub-pixel charging polarity is reversed, and is not limited to the display device based on the dual gate driving architecture.
  • the sub-pixels on the scan line can be normally charged to achieve normal display, and the light and dark stripes or the mesh phenomenon of the display device can be effectively eliminated.
  • the delay unit 20 when the above-described driving system 200 is applied to a display device based on a dual gate architecture for driving a display panel by a two-wire inversion method, the delay unit 20 includes:
  • the first charging unit 21 is configured to charge the current scan line for a first preset time if the current scan line is an odd line scan line;
  • the second charging unit 22 is configured to charge the current scan line for a second preset time if the current scan line is an even line scan line;
  • the first preset time is > the second preset time.
  • the charging polarity of the sub-pixels is reversed in odd rows, and therefore, it is necessary to extend the charging time of the odd-line scanning lines, so that The charging time of the odd-line scan lines is greater than the charging time of the even-line scan lines, so that the odd-numbered rows of sub-pixels are displayed at normal brightness, thereby ensuring normal display of the display device.
  • an embodiment of the present application further provides a display device 300 including a display panel 301 , a gate driving module 302 , a control module 303 , and a driving system 200 .
  • the display panel 301 includes a plurality of scan lines, and each scan line is connected to a row of sub-pixels;
  • the gate driving module 302 is connected to all row sub-pixels of the display panel 301 through a plurality of scan lines;
  • the control module 303 is connected to the gate driving module 302 for outputting an enable signal.
  • the drive system can be a software program system in the control module for performing the method steps in the above method embodiments.
  • the display panel 301 can be any type of display panel, such as a liquid crystal display panel based on LCD (Liquid Crystal Display) technology, and an organic power based on OLED (Organic Electroluminescence Display) technology.
  • LCD Liquid Crystal Display
  • OLED Organic Electroluminescence Display
  • the gate driving module may be any device or circuit having a function of scanning and charging pixels of the display panel, for example, a gate driver chip or a gate gate. G-COF, Gate-Chip on Film, etc.
  • control module may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit), or by an ASIC (Application Specific Integrated Circuit), and the control module may also be a display device. Screen driver board (TCO N, Timing Controller).
  • CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • all modules or units in the embodiments of the present application may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit). achieve.
  • a general-purpose integrated circuit such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种显示装置（100, 300）的驱动方法和驱动系统（200），驱动方法包括：检测当前扫描线（G1, G2, … G8）对应连接的子像素的充电极性是否发生反转（S10）；若当前扫描线（G1, G2, … G8）对应连接的子像素的充电极性发生反转，则延长对当前扫描线（G1, G2, … G8）进行充电的时间（S20）。

Description

[根据细则37.2由ISA制定的发明名称]　一种显示装置的驱动方法和驱动系统 技术领域
本申请实施例属于显示技术领域，尤其涉及一种显示装置及其驱动方法和驱动系统。
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。目前，双栅极(Dual Gate)驱动架构，被广泛应用于液晶显示面板的驱动，与传统的驱动架构相比，双栅极驱动架构的电极闸线(gate line)的数量增倍、数据线(data line)的数量减半，从而使得源极驱动芯片(source IC)的数量也相应减少，降低了制造成本。
技术问题
现有的双栅极驱动架构中行子像素的充电极性发生反转时，会导致发生极性反转的子像素由于充电时间不足而偏暗，从而使显示装置出现明暗条纹或者网格现象。
问题的解决方案
技术解决方案
本申请实施例提供一种显示装置及其驱动方法和驱动系统，旨在解决双栅极驱动架构中行子像素的充电极性发生反转时，会导致发生极性反转的子像素由于充电时间不足而偏暗，从而使显示装置出现明暗条纹或者网格现象的问题。
本申请实施例提供一种显示面板的驱动方法，显示装置的驱动方法，所述显示装置包括多条扫描线，每条扫描线对应连接一行子像素，所述驱动方法包括：
检测当前扫描线输入的扫描信号的极性是否发生反转；
若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间。
在一个实施例中，所述检测当前扫描线输入的扫描信号的极性是否发生反转，具体包括：
比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转。
在一个实施例中，所述显示装置还包括栅极驱动模块，所述栅极驱动模块与所述多条扫描线连接；
所述延长对当前扫描线进行充电的时间，具体包括：
对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
在一个实施例中，所述显示装置包括通过两线反转方式驱动的显示面板，所述显示面板与所述多条扫描线连接；
所述若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间包括：
若当前扫描线为奇数行扫描线，则对所述当前扫描线充电第一预设时间；
若当前扫描线为偶数行扫描线，则对所述当前扫描线充电第二预设时间；
其中，第一预设时间＞第二预设时间。
在一个实施例中，所述显示装置包括由多行子像素组成的显示面板，所述显示面板中的每行子像素均包括多组子像素，每组子像素均包括依次排列的第一颜色子像素、第二颜色子像素和第三颜色子像素，位于同一列的子像素的颜色相同，第一颜色子像素、第二颜色子像素和第三颜色子像素中至少有一个为红色子像素、至少有一个为绿色子像素且至少有一个为蓝色子像素。
在一个实施例中，所述显示面板中的所有子像素通过双栅极驱动架构的连接方式连接。
在一个实施例中，所述显示面板通过两线反转方式驱动。
在一个实施例中，所述每组子像素中，相邻的两个子像素的极性是第一极性且另外一个子像素的极性是第二极性，并且同一行子像素中，每隔两个子像素极性反转一次；同一列子像素中，相邻子像素的极性不同。
在一个实施例中，所述第一极性和所述第二极性中一个为正极性、一个为负极 性。本申请实施例还提供一种显示装置的驱动系统，所述显示装置包括多条扫描线，每条扫描线对应连接一行子像素，所述驱动系统包括：
极性检测单元，用于检测当前扫描线输入的扫描信号的极性是否发生反转；
延时单元，用于若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间。
在一个实施例中，所述极性检测单元具体包括：
比较单元，用于比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
判定单元，用于若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转。
在一个实施例中，所述显示装置还包括栅极驱动模块，所述栅极驱动模块与所述多条扫描线连接；
所述延时单元具体用于：
对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
在一个实施例中，所述显示装置包括通过两线反转方式驱动的显示面板，所述显示面板与所述多条扫描线连接；
所述延时单元包括：
若当前扫描线为奇数行扫描线，则对所述当前扫描线充电第一预设时间；
若当前扫描线为偶数行扫描线，则对所述当前扫描线充电第二预设时间；
其中，第一预设时间＞第二预设时间。
本申请实施例还提供一种显示装置的驱动方法，所述显示装置包括多条扫描线和栅极驱动模块，每条扫描线对应连接一行子像素，所述栅极驱动模块与所述多条扫描线连接，所述驱动方法包括：
比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转；否则，判定当前扫描线输入的扫描信号的极 性未发生反转；
若当前扫描线输入的扫描信号的极性发生反转，则对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
在一个实施例中，所述显示装置包括由多行子像素组成的显示面板，所述显示面板中的所有子像素通过双栅极驱动架构的连接方式连接并通过两线反转方式驱动。
发明的有益效果
有益效果
本申请实施例通过延长扫描信号发生极性反转的扫描线的充电时间，使该扫描线上的子像素能够被正常充电，实现正常显示，可以有效消除显示装置的明暗条纹或者网格现象。
对附图的简要说明
附图说明
为了更清楚地说明本方案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方案的一些实施例，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是本申请的一个范例提供的基于双栅极驱动架构的显示装置的示意图；
图2是本申请的一个实施例提供的显示装置的驱动方法的流程示意图；
图3是本申请的一个实施例提供的步骤S20的流程示意图；
图4是本申请的一个实施例提供的控制信号和扫描信号的示意图；
图5是本申请的一个实施例提供的显示装置的驱动系统的结构框图；
图6是本申请的一个实施例提供的延时单元的结构框图；
图7是本申请的一个实施例提供的显示装置的结构框图。
发明实施例
本发明的实施方式
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。
如图1所示，本申请的一个范例提供一种基于双栅极驱动架构的显示装置100，其包括源极驱动模块110、栅极驱动模块120和显示面板130；其中，显示面板130包括m行×n列子像素，每行子像素对应连接一条扫描线，其中，m≥1，n≥1且m和n均为正整数。
在应用中，源极驱动模块可以是任意的具有对显示面板的像素进行数据驱动功能的任意器件或电路，例如，源极驱动芯片(Source Driver IC)或薄膜源极驱动芯片(S-COF，Source-Chip on Film)等。
在应用中，栅极驱动模块可以是任意的具有对显示面板的像素进行扫描充电功能的任意器件或电路，例如，栅极驱动芯片(Gate Driver IC)或薄膜栅极驱动芯片(G-COF，Gate-Chip on Film)等。
在应用中，显示面板中的每行子像素均包括多组子像素，每组子像素均包括依次排列的第一颜色子像素、第二颜色子像素和第三颜色子像素，位于同一列的子像素的颜色相同，第一颜色子像素、第二颜色子像素和第三颜色子像素中至少有一个为红色子像素、至少有一个为绿色子像素且至少有一个为蓝色子像素。
在本申请的一个实施例中，显示面板采用双栅极驱动架构结合两线反转(2 line inversion)方式，因此，每组三个子像素中，必定有相邻的两个子像素的极性是 第一极性且另外一个子像素的极性是第二极性，第一极性和第二极性中一个为正极性、一个为负极性，并且同一行子像素中，每隔两个子像素极性反转一次；同一列子像素中，相邻子像素的极性不同。
图1中示例性的示出一个包括4行×8列子像素的显示面板130。图1中，“+”表示正极性，“-”表示负极性。
在应用中，与传统的驱动架构相比，上述双栅极驱动架构的电极闸线(gate line)的数量增倍、数据线(data line)的数量减半，从而使得源极驱动芯片(source IC)的数量也相应减少，降低了制造成本。
然而，由于双栅极驱动架构中行子像素的充电极性发生反转时，会导致发生极性反转的子像素由于充电时间不足而偏暗，从而使显示装置出现明暗条纹或者网格现象。
如图2所示，本申请的一个实施例提供一种显示装置的驱动方法，其包括：
步骤S10：检测当前扫描线输入的扫描信号的极性是否发生反转。
在应用中，可以通过判断扫描信号的极性是否发生改变的方式来判断其极性是否发生反转，若极性发生改变，则判定扫描信号的极性发生反转。
在一个实施例中，步骤S10包括：
比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转。
步骤S20：若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间。
在应用中，可以通过改变输出至栅极驱动模块的使能信号的占空比来实现对充电时间的调节，占空比越大，充电时间越长，反之，充电时间越短。
在一个实施例中，步骤S20包括：
若当前扫描线输入的扫描信号的极性发生反转，则对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
在应用中，只要行子像素充电极性发生反转，发生极性反转的子像素就会由于充电时间不足而偏暗，从而使显示装置出现明暗条纹或者网格现象，因此上述驱动方法实际上可以适用于行子像素充电极性会发生反转的所有显示装置，而不仅限于基于双栅极驱动架构的显示装置。
本申请实施例通过延长扫描信号发生极性反转的扫描线的充电时间，使该扫描线上的子像素能够被正常充电，实现正常显示，可以有效消除显示装置的明暗条纹或者网格现象。
如图3所示，在本申请的一个实施例中，当上述驱动方法应用于基于双栅极架构，通过两线反转方式来驱动的显示装置时；步骤S20包括：
步骤S21：若当前扫描线为奇数行扫描线，则对所述当前扫描线充电第一预设时间；
步骤S22：若当前扫描线为偶数行扫描线，则对所述当前扫描线充电第二预设时间；
其中，第一预设时间＞第二预设时间。
在应用中，通过分析图1所示的基于双栅极驱动架构的显示装置可知，子像素的充电极性会在奇数行发生反转，因此，需要延长奇数行的扫描线的充电时间，使奇数行扫描线的充电时间大于偶数行扫描线的充电时间，来使奇数行的子像素以正常亮度显示，从而保证显示装置的正常显示。
如图4所示，示例性的示出了输出至栅极驱动模块的各项控制信号和栅极驱动模块输出至各条扫描线上的扫描信号的示意图。图4中，STV表示栅极驱动模块的移位寄存器控制信号，CKV表示时钟信号，OE1表示对奇数行扫描线的充电时间进行调节的使能信号，OE2表示对偶数行扫描线的充电时间进行调节的使能信号，G1～G4分别表示G1～G4四条扫描线上的扫描信号。
本申请的一个实施例还提供一种显示装置的驱动方法，基于图2和3所对应的实施例中的方法步骤实现，所述驱动方法包括：
比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转；否则，判定当前扫描线输入的扫描信号的极 性未发生反转；
若当前扫描线输入的扫描信号的极性发生反转，则对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
如图5所示，本申请的一个实施例提供一种显示装置的驱动系统200，用于执行图2所对应的实施例中的方法步骤，其包括：
极性检测单元10，用于检测当前扫描线输入的扫描信号的极性是否发生反转；
延时单元20，用于若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间。
在用中，驱动系统200具体可以为显示装置的控制模块中的软件程序系统。
在应用中，可以通过判断扫描信号的极性是否发生改变的方式来判断其极性是否发生反转，若极性发生改变，则判定扫描信号的极性发生反转。
在一个实施例中，极性检测单元20包括：
比较单元，用于比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
判定单元，用于若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转。
在应用中，可以通过改变输出至栅极驱动模块的使能信号的占空比来实现对充电时间的调节，占空比越大，充电时间越长，反之，充电时间越短。
在一个实施例中，延时单元20还可以通过其他可行方式实现延时，例如可以用于：
对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
在应用中，只要行子像素充电极性发生反转，发生极性反转的子像素就会由于充电时间不足而偏暗，从而使显示装置出现明暗条纹或者网格现象，因此上述驱动系统实际上可以适用于行子像素充电极性会发生反转的所有显示装置，而不仅限于基于双栅极驱动架构的显示装置。
本申请实施例通过延长扫描信号发生极性反转的扫描线的充电时间，使该扫描线上的子像素能够被正常充电，实现正常显示，可以有效消除显示装置的明暗条纹或者网格现象。
如图6所示，在本申请的一个实施例中，当上述驱动系统200应用于基于双栅极架构的显示装置，用于通过两线反转方式驱动显示面板时，延时单元20包括：
第一充电单元21，用于若当前扫描线为奇数行扫描线，则对所述当前扫描线充电第一预设时间；
第二充电单元22，用于若当前扫描线为偶数行扫描线，则对所述当前扫描线充电第二预设时间；
其中，第一预设时间＞第二预设时间。
在应用中，通过分析图1所示的基于双栅极驱动架构的显示装置可知，子像素的充电极性会在奇数行发生反转，因此，需要延长奇数行的扫描线的充电时间，使奇数行扫描线的充电时间大于偶数行扫描线的充电时间，来使奇数行的子像素以正常亮度显示，从而保证显示装置的正常显示。
如图7所示，本申请的一个实施例还提供一种显示装置300，其包括显示面板301、栅极驱动模块302、控制模块303和驱动系统200。
显示面板301，包括多条扫描线，每条扫描线对应连接一行子像素；
栅极驱动模块302，通过多条扫描线与显示面板301的所有行子像素连接；
控制模块303，与栅极驱动模块302连接，用于输出使能信号。
在一个实施例中，驱动系统可以为控制模块中的软件程序系统，用于执行上述方法实施例中的方法步骤。
在一个实施例中，显示面板301可以为任意类型的显示面板，例如基于LCD(Liquid Crystal Display，液晶显示)技术的液晶显示面板、基于OLED(Organic Electroluminesence Display，有机电激光显示)技术的有机电激光显示面板、基于QLED(Quantum Dot Light Emitting Diodes，量子点发光二极管)技术的量子点发光二极管显示面板或曲面显示面板等。
在一个实施例中，栅极驱动模块可以是任意的具有对显示面板的像素进行扫描充电功能的任意器件或电路，例如，栅极驱动芯片(Gate Driver IC)或薄膜栅 极驱动芯片(G-COF，Gate-Chip on Film)等。
在一个实施例中，控制模块具体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，控制模块也可以是显示装置的屏驱动板(TCO N，Timing Controller)。
在一个实施例中，本申请实施例中的所有模块或单元，均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。
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。
以上所述仅为本申请的较佳实施例而已，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. 一种显示装置的驱动方法，其中，所述显示装置包括多条扫描线，每条扫描线对应连接一行子像素，所述驱动方法包括：
    检测当前扫描线输入的扫描信号的极性是否发生反转；
    若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间。
  2. 如权利要求1所述的显示装置的驱动方法，其中，所述检测当前扫描线输入的扫描信号的极性是否发生反转，具体包括：
    比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
    若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转。
  3. 如权利要求1所述的显示装置的驱动方法，其中，所述显示装置还包括栅极驱动模块，所述栅极驱动模块与所述多条扫描线连接；
    所述延长对当前扫描线进行充电的时间，具体包括：
    对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
  4. 如权利要求1所述的显示装置的驱动方法，其中，所述显示装置包括通过两线反转方式驱动的显示面板，所述显示面板与所述多条扫描线连接；
    所述若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间包括：
    若当前扫描线为奇数行扫描线，则对所述当前扫描线充电第一预设时间；
    若当前扫描线为偶数行扫描线，则对所述当前扫描线充电第二预设时间；
    其中，第一预设时间＞第二预设时间。
  5. 如权利要求1所述的显示装置的驱动方法，其中，所述显示装置包括由多行子像素组成的显示面板，所述显示面板中的每行子像素均包括多组子像素，每组子像素均包括依次排列的第一颜色子像素、第二颜色子像素和第三颜色子像素，位于同一列的子像素的颜色相同，第一颜色子像素、第二颜色子像素和第三颜色子像素中至少有一个为红色子像素、至少有一个为绿色子像素且至少有一个为蓝色子像素。
  6. 如权利要求5所述的显示装置的驱动方法，其中，所述显示面板中的所有子像素通过双栅极驱动架构的连接方式连接。
  7. 如权利要求6所述的显示装置的驱动方法，其中，所述显示面板通过两线反转方式驱动。
  8. 如权利要求7所述的显示装置的驱动方法，其中，所述每组子像素中，相邻的两个子像素的极性是第一极性且另外一个子像素的极性是第二极性，并且同一行子像素中，每隔两个子像素极性反转一次；同一列子像素中，相邻子像素的极性不同。
  9. 如权利要求8所述的显示装置的驱动方法，其中，所述第一极性和所述第二极性中一个为正极性、一个为负极性。
  10. 一种显示装置的驱动系统，其中，所述显示装置包括多条扫描线，每条扫描线对应连接一行子像素，所述驱动系统包括：
    极性检测单元，用于检测当前扫描线输入的扫描信号的极性是否发生反转；
    延时单元，用于若当前扫描线输入的扫描信号的极性发生反转，则延长对当前扫描线进行充电的时间。
  11. 如权利要求10所述的显示装置的驱动系统，其中，所述极性检测单元具体包括：
    比较单元，用于比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
    判定单元，用于若前一条扫描线和当前扫描线输入的扫描信号的 极性不同，则判定当前扫描线输入的扫描信号的极性发生反转。
  12. 如权利要求10所述的显示装置的驱动系统，其中，所述显示装置还包括栅极驱动模块，所述栅极驱动模块与所述多条扫描线连接；
    所述延时单元具体用于：
    对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
  13. 如权利要求10所述的显示装置的驱动系统，其中，所述显示装置包括通过两线反转方式驱动的显示面板，所述显示面板与所述多条扫描线连接；
    所述延时单元包括：
    第一充电单元，用于若当前扫描线为奇数行扫描线，则对所述当前扫描线充电第一预设时间；
    第二充电单元，用于若当前扫描线为偶数行扫描线，则对所述当前扫描线充电第二预设时间；
    其中，第一预设时间＞第二预设时间。
  14. 如权利要求10所述的显示装置的驱动方法，其中，所述显示装置包括由多行子像素组成的显示面板，所述显示面板中的每行子像素均包括多组子像素，每组子像素均包括依次排列的第一颜色子像素、第二颜色子像素和第三颜色子像素，位于同一列的子像素的颜色相同，第一颜色子像素、第二颜色子像素和第三颜色子像素中至少有一个为红色子像素、至少有一个为绿色子像素且至少有一个为蓝色子像素。
  15. 如权利要求14所述的显示装置的驱动方法，其中，所述显示面板中的所有子像素通过双栅极驱动架构的连接方式连接。
  16. 如权利要求15所述的显示装置的驱动方法，其中，所述显示面板通过两线反转方式驱动。
  17. 如权利要求16所述的显示装置的驱动方法，其中，所述每组子像素中，相邻的两个子像素的极性是第一极性且另外一个子像素的极性是第二极性，并且同一行子像素中，每隔两个子像素极性反转一次；同一列子像素中，相邻子像素的极性不同。
  18. 如权利要求17所述的显示装置的驱动方法，其中，所述第一极性和所述第二极性中一个为正极性、一个为负极性。
  19. 一种显示装置的驱动方法，其中，所述显示装置包括多条扫描线和栅极驱动模块，每条扫描线对应连接一行子像素，所述栅极驱动模块与所述多条扫描线连接，所述驱动方法包括：
    比较前一条扫描线和当前扫描线输入的扫描信号的极性是否相同；
    若前一条扫描线和当前扫描线输入的扫描信号的极性不同，则判定当前扫描线输入的扫描信号的极性发生反转；否则，判定当前扫描线输入的扫描信号的极性未发生反转；
    若当前扫描线输入的扫描信号的极性发生反转，则对当前扫描线进行充电时，增加输出至所述栅极驱动模块的使能信号的占空比，以延长对当前扫描线进行充电的时间，所述使能信号与所述当前扫描线对应。
  20. 如权利要求19所述的显示装置的驱动方法，其中，所述显示装置包括由多行子像素组成的显示面板，所述显示面板中的所有子像素通过双栅极驱动架构的连接方式连接并通过两线反转方式驱动。
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