WO2017067020A1 - 一种显示装置及其驱动方法 - Google Patents

一种显示装置及其驱动方法 Download PDF

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Publication number
WO2017067020A1
WO2017067020A1 PCT/CN2015/093553 CN2015093553W WO2017067020A1 WO 2017067020 A1 WO2017067020 A1 WO 2017067020A1 CN 2015093553 W CN2015093553 W CN 2015093553W WO 2017067020 A1 WO2017067020 A1 WO 2017067020A1
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Prior art keywords
display
frame
display device
picture
duration
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PCT/CN2015/093553
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English (en)
French (fr)
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徐京
黄泰钧
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深圳市华星光电技术有限公司
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Priority to US14/897,618 priority Critical patent/US9898966B2/en
Publication of WO2017067020A1 publication Critical patent/WO2017067020A1/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
    • G09G3/22—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]
    • G09G3/3225—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] using an active matrix
    • G09G3/3258—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] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • 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]
    • 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
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2320/10—Special adaptations of display systems for operation with variable images
    • G09G2320/103—Detection of image changes, e.g. determination of an index representative of the image change

Definitions

  • the present invention relates to the field of display technologies, and in particular, to the field of driving technologies for display devices, and more particularly to a display device and a driving method thereof.
  • an OLED (Organic Light-Emitting Diode) display device can self-illuminate without a backlight unit, so that the power consumption is lower, and the display brightness is determined by the driving current.
  • a black insertion method is generally used to reduce the display brightness, that is, a black frame is inserted after each frame of the picture, but the current practice usually uses a fixed ratio of picture time or frame interval.
  • the way to insert the black screen does not take into account the display brightness at that time, which easily affects the user's viewing effect.
  • an embodiment of the present invention provides a display device and a driving method thereof, which can adjust display brightness according to a display duration of a static picture, thereby prolonging the service life of the display device.
  • a driving method of a display device includes: dividing a static frame displayed by a display device into a first frame and a second frame, and the second frame includes a first subframe and a second frame a subframe in which a duration of a display period of the first frame and a duration of a display period of the second frame are equal; a grayscale screen is output during display of the first frame and the first subframe, wherein during display of the first frame,
  • the plurality of gate lines of the display device are sequentially turned on, and the plurality of data lines of the display device output gray scale voltages to display gray scale pictures. During the display of the first sub frame, all the gate lines are turned off, and the data lines stop outputting gray.
  • the plurality of gate lines are simultaneously turned on, and the data line outputs a dark state voltage to output a dark state picture, wherein the duration of the display period of the second sub-frame and the display duration of the static frame In direct proportion.
  • the grayscale screen is output during the display of the dynamic frame when the display device is displayed.
  • the dark state picture includes a black picture and a gray picture.
  • a driving method of a display device includes: dividing a static frame displayed by a display device into a first frame and a second frame, and the second frame includes a first subframe and a second frame Sub-frame; outputting a grayscale picture during display of the first frame and the first sub-frame; and outputting a dark-state picture during display of the second sub-frame, wherein the duration of the display period of the second sub-frame and the display duration of the static frame In direct proportion.
  • the plurality of gate lines of the display device are sequentially turned on, and the plurality of data lines thereof output the gray scale voltage to display the gray scale picture; during the display of the first sub frame, all the gate lines Off, and the data line stops outputting the gray scale voltage; during the display of the second sub-frame, the plurality of gate lines are simultaneously turned on, and the data line outputs a dark state voltage to display a dark state picture.
  • the duration of the display period of the first frame is equal to the duration of the display period of the second frame.
  • the grayscale screen is output during the display of the dynamic frame when the display device is displayed.
  • the dark state picture includes a black picture and a gray picture.
  • a display device provided by the embodiment of the invention includes a timing controller and a data driver for driving the data line
  • the timing controller includes: a detecting module, configured to detect whether the display device enters a display period of the static frame; a clock module, configured to divide a display period of the static frame into two display periods of the first frame and the second frame, and the second frame includes a first subframe and a second subframe; and a timing module configured to time the static frame Displaying a duration; a control module for controlling the data driver to cause the display device to output a grayscale screen during display of the first frame and during display of the first subframe, and to output a dark state image during display of the second subframe, wherein the second The duration of the display period of the sub-frame is proportional to the display duration of the static frame.
  • the display device further includes a plurality of gate lines and a gate driver for driving the gate lines.
  • the control module is configured to control the gate driver to sequentially turn on the plurality of gate lines, and control data.
  • the driver outputs a gray scale voltage to the data line to display a gray scale picture; during display of the first sub frame, the control module is configured to control the gate driver to turn off all gate lines off, and the control data driver stops outputting the gray scale voltage to the data line
  • the control module is configured to control the gate driver to simultaneously turn on a plurality of gate lines, and the control data driver outputs a dark state voltage to the data lines to display a dark state picture.
  • the detecting module is further configured to detect whether the display device enters the display period of the dynamic frame, and if so, during the display of the dynamic frame, the control module controls the gate driver to sequentially turn on the plurality of gates. Line, and the control data driver outputs gray scale voltage to the data line to display a gray scale picture.
  • the duration of the display period of the first frame is equal to the duration of the display period of the second frame.
  • the dark state picture includes a black picture and a gray picture.
  • the static frame is divided into a first frame and a second frame, and the second frame includes a first subframe displaying a grayscale picture and a second subframe displaying a dark state picture, according to
  • the display duration of the still picture is adjusted in a proportional relationship to adjust the duration of the second sub-frame. That is, the display time of the dark picture is larger as the display time of the static picture is larger, and the display time of the dark picture is smaller as the display time of the static picture is smaller. Small, so that the display brightness of the display device can be dynamically adjusted to prevent the display device from being in a state of large display brightness for a long time, thereby reducing the aging speed and prolonging the service life, and ensuring image display quality.
  • FIG. 1 is a schematic flow chart of an embodiment of a driving method of a display device according to the present invention
  • FIG. 2 is a schematic structural view of an embodiment of a display device of the present invention.
  • Figure 3 is a timing diagram of various signals of the present invention.
  • FIG. 4 is a schematic view showing the structure of another embodiment of the display device of the present invention.
  • the embodiment of the present invention provides a driving method as shown in FIG. 1 for driving the display device shown in FIG. 2 , which may be an OLED display device and includes a timing controller 21 , a data driver 22 , and a gate driver 23 . And a display panel 24 for generating a control signal to control the data driver 22 and the gate driver 23 to drive the display panel 24 to display an image.
  • the display panel 24 includes a plurality of gate lines G arranged at intervals in the column direction, and data lines D vertically intersecting with the gate lines and spaced apart in the row direction, and the plurality of gate lines G and the plurality of data lines D intersect.
  • a plurality of pixel units arranged in an array of display devices are defined. Each pixel unit is connected to a corresponding TFT (Thin Film Transistor). Specifically, the drain of the TFT is connected to the pixel unit, the gate is connected to the gate line, and the source is connected to the data line.
  • TFT Thin Film Transistor
  • the gate driver 23 is connected to the scan line G and supplies a scan signal to the pixel unit through the scan line G, and the data driver 22 and
  • the data line D is connected and provides a data signal (gray scale voltage) for the pixel unit through the data line D.
  • the scan signal is progressive scan and is a switching signal for controlling each row of pixel units, and the scan signal is controlled by turning on and off the TFT. And interacting with the data signal on the TFT to control the current of the pixel unit connected thereto, wherein the data signal can charge the storage capacitor of the pixel unit through the TFT when the TFT is turned on, thereby causing the display device to be in each frame It can be illuminated during the display to display the image.
  • the driving method of this embodiment includes the following:
  • Step S11 The static frame when the display device is displayed is divided into a first frame and a second frame, and the second frame includes a first subframe and a second subframe.
  • Step S12 Output a grayscale picture during display of the first frame and the first subframe.
  • Step S13 Output a dark state picture during display of the second subframe, wherein the duration of the display period of the second subframe is proportional to the display duration of the static frame.
  • the current frame to be displayed by the display device during the image display is a static frame or a dynamic frame.
  • the previous frame and the current frame are consecutive frames, wherein the previous frame and the current frame both include a mountain and a frame. If the previous frame is the same as the position of the cloud in the current frame, the current frame is a static frame.
  • the manner of judging the static frame or the dynamic frame is not limited thereto, and the embodiment of the present invention does not limit this.
  • the data driver 22 When receiving an image data during an image period and during a dark state, as shown, comprises a first frame F 1 during the image analysis apparatus 3 shown in period is divided into a display image data in each of the static frame display And the display period t 1 of the first subframe of the second frame F 2 , the dark period is the display period t 2 of the first subframe.
  • the data driver 22 writes the gray scale voltage corresponding to the gray scale screen for the display panel 24 under the control of the timing controller 21, and during the dark state, the data driver 22 is the display panel under the control of the timing controller 21. 24 Write the dark state voltage corresponding to the dark state picture.
  • the data driver 22 writes the gray scale voltage corresponding to the grayscale screen for the display panel 24 under the control of the timing controller 21. It should be noted that whether it is a grayscale picture during an image or a dark state picture during a dark state, it is an image displayed by the display panel 24.
  • the duration of the display period of the first frame is equal to the duration of the display period of the second frame, which is equivalent to multiplying each static frame. For example, if the original frequency of the image is 60 Hz, the frequency of the image after the multiplication becomes 120Hz.
  • the embodiment of the present invention is substantially a driving method for inserting a black screen or inserting gray, that is, the dark state picture is a black screen or a gray screen, and the time point of inserting a black screen or inserting gray can be adjusted according to the display duration of the static frame. .
  • the timing chart of FIG. 1 The following description will be made in conjunction with the timing chart of FIG.
  • the signal output of the gate line is controlled by the gate drive signal OE
  • the signal output of the data line is controlled by the gray scale drive signal STB
  • all the gate lines G are controlled to be turned on by the voltage detection result signal XAO, specifically :
  • the gate driver outputs a high level signal OE
  • the gate driver 23 controls the respective gate lines G successively opened for high output, and to sequentially open the corresponding the TFT, while each of the corresponding The gate line G is turned on, and the first gray scale driving signal STB 1 is changed from high to low.
  • the data driver 22 outputs a gray scale signal SO to the data line D, and the gray scale signal SO corresponds to the gray scale voltage V data , thereby The pixel unit is charged to display a grayscale picture.
  • the gate driving signal OE outputs a low level
  • the gate driver 23 controls all the gate lines G to be turned off while the first gray-scale driving signal STB 1 outputs low.
  • the data driver 22 outputs a low-level gray-scale signal SO to the data line D, for example, zero, that is, all the data lines D stop outputting the gray-scale voltage, and at this time, the storage capacitor of the pixel unit is powered, and the display device remains A grayscale screen can be displayed.
  • the gate driver outputs a high level signal OE
  • the gate driver 23 controls the respective gate lines G be turned on simultaneously high output
  • the step drive signal STB 2 has a falling edge
  • the data driver 22 outputs a gray scale signal SO to the data line D
  • the gray scale signal SO corresponds to the gray scale voltage V ref and the gray scale voltage V ref is smaller than the gray scale voltage V data , thereby charging the pixel unit to display a dark state picture.
  • the dark state picture is a black screen
  • the gray scale voltage V ref is a gray scale driving voltage when the display device displays a black screen; if the dark state screen is a gray screen, the gray scale voltage V ref is expressed when the display device displays a gray screen.
  • Grayscale drive voltage is a gray scale driving voltage when the display device displays a black screen.
  • the duration of the display period t 2 of the second subframe is proportional to the display duration of the static frame, that is, the embodiment of the present invention adjusts the second subframe in a proportional relationship according to the display duration of the static picture.
  • the duration of the display period t 2 that is, the longer the display duration of the still picture, the larger the display duration of the dark state screen, and the smaller the display duration of the still picture is, the smaller the display duration of the dark state picture is, so that the display device can be dynamically adjusted.
  • Display brightness reduce the display brightness of the display device when it is in a static picture for a long time, thereby reducing its aging speed and prolonging the service life, ensuring image display quality.
  • the embodiment of the present invention further provides a display device as shown in FIG. 4.
  • the display device 40 includes a timing controller 41, a data driver 42 and a gate driver 43 for generating a control signal.
  • the data driver 42 and the gate driver 43 are controlled to cause the display device 40 to display an image.
  • the timing controller 41 includes a detection module 411, a clock module 412, a timing module 413, and a control module 414, wherein:
  • the detecting module 411 is configured to detect whether the display device 40 enters the display period of the static frame, and is of course used to detect whether the display device 40 enters the display period of the dynamic frame.
  • the clock module 412 is configured to divide the display period of the static frame into two display periods of the first frame and the second frame, and the second frame includes the first subframe and the second subframe.
  • the duration of the display period of the first frame and the duration of the display period of the second frame may be equal.
  • the timing module 413 is used to time the display duration of the static frame.
  • the control module 414 is configured to control the data driver 42 to cause the display device 40 to output a grayscale picture during display of the first frame and during display of the first subframe, and output a dark state picture during display of the second subframe, the dark state picture includes Black and gray pictures.
  • the duration of the display period of the second subframe is proportional to the display duration of the static frame.
  • the control module 414 is configured to control the gate driver 43 to sequentially turn on the plurality of gate lines, and the control data driver 42 outputs the gray scale voltage to the data lines to display the gray scale image;
  • control module 414 is configured to control gate driver 43 to turn off all gate lines off, and control data driver 42 stops outputting gray scale voltages to the data lines;
  • control module 414 The control gate driver 43 simultaneously turns on a plurality of gate lines, and the control data driver 42 outputs a dark state voltage to the data lines to display a dark state picture.
  • control module 414 controls the gate driver 43 to sequentially turn on a plurality of gate lines, and the control data driver 42 outputs the gray scale voltage to the data line to display gray. Order picture.
  • the plurality of module configurations of the timing controller 41 of the display device 40 described above, corresponding to the method described in the above embodiments, have the same technical effects.
  • timing controller 41 is merely illustrative.
  • the division of the module is only a logical function division. In actual implementation, there may be another division manner, for example, two modules may be integrated into another system. Medium, or some features can be ignored, or not executed.
  • the connections between the modules may be through some interfaces, or may be electrical or other forms.
  • the module may or may not be a physical frame, and may be located in one place or distributed to multiple network units, and may be implemented in the form of a software function box or hardware. Formal realization.

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Abstract

一种显示装置的驱动方法及使用该方法的显示装置。驱动方法包括，将静态帧分为第一帧和第二帧（S11），且第二帧包括第一子帧和第二子帧，在第一帧和第一子帧的显示期间输出灰阶画面（S12）；在第二子帧的显示期间输出暗态画面，其中第二子帧的显示期间的时长与静态帧的显示时长成正比（S13）。驱动方法根据静态画面的显示时长调节显示装置的显示亮度，延长其使用寿命。

Description

一种显示装置及其驱动方法 【技术领域】
本发明涉及显示技术领域，具体而言涉及显示装置的驱动技术领域，尤其涉及一种显示装置及其驱动方法。
【背景技术】
相比液晶显示装置，OLED(Organic Light-Emitting Diode，有机发光二极管)显示装置能自发光而无需背光单元故功耗更低，其显示亮度由驱动电流决定，驱动电流越大则显示亮度越大，因此当其长时间处于较大显示亮度的状态，长时间内不断接收的驱动电流也较大，这无疑会加速其老化并影响使用寿命，继而严重影响图像显示质量。
现有技术为延长OLED显示装置的使用寿命，普遍采用插黑法以降低其显示亮度，即在每一帧画面之后插入一帧黑画面，但是当前做法通常以固定比例的画面时间或采用画面间隔的方式插入黑画面，并未考虑当时的显示亮度，极易影响用户的观看效果。
【发明内容】
鉴于此，本发明实施例提供一种显示装置及其驱动方法，能够根据静态画面的显示时长相应调节显示亮度，延长显示装置的使用寿命。
本发明实施例提供的一种显示装置的驱动方法，所述驱动方法包括：将显示装置显示时的静态帧分为第一帧和第二帧，且第二帧包括第一子帧和第二子帧，其中第一帧的显示期间的时长和第二帧的显示期间的时长相等；在第一帧和第一子帧的显示期间输出灰阶画面，其中，在第一帧的显示期间，显示装置的多条栅极线依次开启，且显示装置的多条数据线输出灰阶电压以显示灰阶画面，在第一子帧的显示期间，所有栅极线关闭，且数据线停止输出灰阶电压；以及在第二子帧的显示期间，多条栅极线同时开启，且数据线输出暗态电压以输出暗态画面，其中第二子帧的显示期间的时长与静态帧的显示时长成正比。
其中，在显示装置显示时的动态帧的显示期间输出灰阶画面。
其中，暗态画面包括黑画面和灰画面。
本发明实施例提供的一种显示装置的驱动方法，所述驱动方法包括：将显示装置显示时的静态帧分为第一帧和第二帧，且第二帧包括第一子帧和第二子帧；在第一帧和第一子帧的显示期间输出灰阶画面；以及在第二子帧的显示期间输出暗态画面，其中第二子帧的显示期间的时长与静态帧的显示时长成正比。
其中，在第一帧的显示期间，显示装置的多条栅极线依次开启，且其多条数据线输出灰阶电压以显示灰阶画面；在第一子帧的显示期间，所有栅极线关闭，且数据线停止输出灰阶电压；在第二子帧的显示期间，多条栅极线同时开启，且数据线输出暗态电压以显示暗态画面。
其中，第一帧的显示期间的时长和第二帧的显示期间的时长相等。
其中，在显示装置显示时的动态帧的显示期间输出灰阶画面。
其中，暗态画面包括黑画面和灰画面。
本发明实施例提供的一种显示装置，包括时序控制器以及用于驱动数据线的数据驱动器，所述时序控制器包括：侦测模块，用于侦测显示装置是否进入静态帧的显示期间；时钟模块，用于将静态帧的显示期间分为第一帧和第二帧这两个显示期间，且第二帧包括第一子帧和第二子帧；计时模块，用于计时静态帧的显示时长；控制模块，用于控制数据驱动器使得显示装置在第一帧的显示期间和第一子帧的显示期间输出灰阶画面、在第二子帧的显示期间输出暗态画面，其中第二子帧的显示期间的时长与静态帧的显示时长成正比。
其中，显示装置还包括多条栅极线以及用于驱动栅极线的栅极驱动器，在第一帧的显示期间，控制模块用于控制栅极驱动器依次开启多条栅极线，且控制数据驱动器输出灰阶电压给数据线以显示灰阶画面；在第一子帧的显示期间，控制模块用于控制栅极驱动器关闭所有栅极线关闭，且控制数据驱动器停止输出灰阶电压给数据线；在第二子帧的显示期间，控制模块用于控制栅极驱动器同时开启多条栅极线，且控制数据驱动器输出暗态电压给数据线以显示暗态画面。
其中，侦测模块还用于侦测显示装置是否进入动态帧的显示期间，若是，则在动态帧的显示期间，控制模块控制栅极驱动器依次开启多条栅极 线，且控制数据驱动器输出灰阶电压给数据线以显示灰阶画面。
其中，第一帧的显示期间的时长和第二帧的显示期间的时长相等。
其中，暗态画面包括黑画面和灰画面。
本发明实施例的显示装置及其驱动方法，将静态帧分为第一帧和第二帧且第二帧包括显示灰阶画面的第一子帧和显示暗态画面的第二子帧，根据静态画面的显示时长以正比例关系相应调节第二子帧的时长，即静态画面的显示时长越大则暗态画面的显示时长越大，静态画面的显示时长越小则暗态画面的显示时长越小，从而可动态调节显示装置的显示亮度，避免显示装置长时间处于较大显示亮度的状态，进而降低其老化速度并延长使用寿命，确保图像显示质量。
【附图说明】
图1是本发明的显示装置的驱动方法一实施例的流程示意图；
图2是本发明的显示装置一实施例的结构示意图；
图3是本发明的各个信号的时序图；
图4是本发明的显示装置另一实施例的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明所提供的示例性的实施例的技术方案进行清楚、完整地描述。
本发明实施例提供一种如图1所示的驱动方法，用于驱动图2所示的显示装置，该显示装置可以为OLED显示装置且包括时序控制器21、数据驱动器22、栅极驱动器23以及显示面板24，时序控制器21用于产生控制信号控制数据驱动器22和栅极驱动器23以驱动显示面板24显示图像。
其中，显示面板24包括沿列方向间隔排列的多条栅极线G以及与栅极线绝缘垂直交叉且沿行方向间隔排列的数据线D，多条栅极线G和多条数据线D交叉定义出显示装置的多个阵列排布的像素单元。每一像素单元与对应的TFT(Thin Film Transistor，薄膜晶体管)连接，具体地，TFT的漏极连接像素单元、栅极连接栅极线、源极连接数据线。栅极驱动器23与扫描线G连接并通过扫描线G为像素单元提供扫描信号，数据驱动器22与 数据线D连接并通过数据线D为像素单元提供数据信号(灰阶电压)，扫描信号为逐行扫描并为用以控制每一行像素单元的开关信号，扫描信号通过对TFT的通断进行控制，并和数据信号共同作用于TFT，实现对与之连接的像素单元的电流的控制，其中当TFT导通时数据信号可通过TFT对像素单元的存储电容充电，从而使显示装置在每一帧的显示期间都能发光以显示图像。
参阅图1所示，本实施例的驱动方法包括以下：
步骤S11：将显示装置显示时的静态帧分为第一帧和第二帧，且第二帧包括第一子帧和第二子帧。
步骤S12：在第一帧和第一子帧的显示期间输出灰阶画面。
步骤S13：在第二子帧的显示期间输出暗态画面，其中第二子帧的显示期间的时长与静态帧的显示时长成正比。
首先需要侦测显示装置在进行图像显示时所要显示的当前帧是静态帧还是动态帧，具体举例而言，假设先前帧与当前帧为连续帧，其中先前帧与当前帧均包括一座山和一朵云，若先前帧与当前帧中云的位置相同，则表示当前帧为静态帧。当然，判断静态帧或动态帧的方式并不局限于此，本发明实施例对此并不予以限制。
当接收到一图像资料时，显示装置通过分析将图像资料中的每一静态帧的显示期间分为图像期间和暗态期间，如图3所示，图像期间包括第一帧F1的显示期间和第二帧F2第一子帧的显示期间t1，暗态期间为第一子帧的显示期间t2。在图像期间，数据驱动器22在时序控制器21的控制下为显示面板24写入灰阶画面对应的灰阶电压，且在暗态期间，数据驱动器22在时序控制器21的控制下为显示面板24写入暗态画面对应的暗态电压。另外，在显示装置的动态帧的显示期间，数据驱动器22在时序控制器21的控制下为显示面板24写入灰阶画面对应的灰阶电压。需要指出的是，无论是图像期间的灰阶画面还是暗态期间的暗态画面，均是显示面板24显示的一种图像。
其中，第一帧的显示期间的时长和第二帧的显示期间的时长相等，相当于对每一静态帧进行倍频，例如若图像的原频率为60Hz，则倍频后图像的频率变为120Hz。
本发明实施例实质上是一种画面插黑或插灰的驱动方法，即前述暗态画面为黑画面或灰画面，并且画面插黑或插灰的时间点可以根据静态帧的显示时长进行调节。下面结合图3的时序图进行描述。
如图3所示，通过栅极驱动信号OE控制栅极线的信号输出，通过灰阶驱动信号STB控制数据线的信号输出，通过电压检测结果信号XAO控制所有栅极线G打开，具体而言：
在第一帧F1的显示期间，栅极驱动信号OE输出高电平，栅极驱动器23控制各条栅极线G依次开启进行高电平输出，并依次打开对应的TFT，同时对应的每条栅极线G打开，第一灰阶驱动信号STB1由高变低，此时数据驱动器22对数据线D输出灰阶信号SO，所述灰阶信号SO对应灰阶电压Vdata，从而为像素单元充电以显示灰阶画面。
在第一帧F2的第一子帧的显示期间t1，栅极驱动信号OE输出低电平，栅极驱动器23控制所有栅极线G关闭，同时第一灰阶驱动信号STB1输出低电平，数据驱动器22对数据线D输出低电平的灰阶信号SO，例如为零，也就是说，所有数据线D停止输出灰阶电压，此时像素单元的存储电容供电，显示装置仍可以显示灰阶画面。
在第一帧F2的第二子帧的显示期间t2，栅极驱动信号OE输出高电平，栅极驱动器23控制各条栅极线G同时开启进行高电平输出，同时第二灰阶驱动信号STB2出现下降沿，数据驱动器22对数据线D输出灰阶信号SO，所述灰阶信号SO对应灰阶电压Vref且所述灰阶电压Vref小于所述灰阶电压Vdata，从而为像素单元充电以显示暗态画面。若暗态画面为黑画面，则灰阶电压Vref表示为显示装置显示黑画面时的灰阶驱动电压；若暗态画面为灰画面，则灰阶电压Vref表示为显示装置显示灰画面时的灰阶驱动电压。
在本发明实施例中，第二子帧的显示期间t2的时长与静态帧的显示时长成正比，也就是说，本发明实施例根据静态画面的显示时长以正比例关系相应调节第二子帧的显示期间t2的时长，即静态画面的显示时长越大则暗态画面的显示时长越大，静态画面的显示时长越小则暗态画面的显示时长越小，从而可动态调节显示装置的显示亮度，降低显示装置在长时间处于静态画面时的显示亮度，进而降低其老化速度并延长使用寿命，确保图像显示质量。
本发明实施例还提供一种如图4所示的显示装置，如图4所示，显示装置40包括时序控制器41、数据驱动器42以及栅极驱动器43，时序控制器41用于产生控制信号控制数据驱动器42和栅极驱动器43以使显示装置40显示图像，时序控制器41包括侦测模块411、时钟模块412、计时模块413以及控制模块414，其中：
侦测模块411用于侦测显示装置40是否进入静态帧的显示期间，当然也就用于侦测显示装置40是否进入动态帧的显示期间。
时钟模块412用于将静态帧的显示期间分为第一帧和第二帧这两个显示期间，且第二帧包括第一子帧和第二子帧。第一帧的显示期间的时长和第二帧的显示期间的时长可以相等。
计时模块413用于计时静态帧的显示时长。
控制模块414用于控制数据驱动器42使得显示装置40在第一帧的显示期间和第一子帧的显示期间输出灰阶画面、在第二子帧的显示期间输出暗态画面，暗态画面包括黑画面和灰画面。
其中，第二子帧的显示期间的时长与静态帧的显示时长成正比。具体而言，在第一帧的显示期间，控制模块414用于控制栅极驱动器43依次开启多条栅极线，且控制数据驱动器42输出灰阶电压给数据线以显示灰阶画面；在第一子帧的显示期间，控制模块414用于控制栅极驱动器43关闭所有栅极线关闭，且控制数据驱动器42停止输出灰阶电压给数据线；在第二子帧的显示期间，控制模块414用于控制栅极驱动器43同时开启多条栅极线，且控制数据驱动器42输出暗态电压给数据线以显示暗态画面。
另外，在侦测模块411侦测显示装置40进入动态帧的显示期间，控制模块414控制栅极驱动器43依次开启多条栅极线，且控制数据驱动器42输出灰阶电压给数据线以显示灰阶画面。
以上描述的显示装置40的时序控制器41的多个模块结构，对应执行上述实施例所述的方法，具有与其相同的技术效果。
应该理解到，上述时序控制器41的实施方式仅是示意性的，模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如两个模块可集成到另一个系统中，或一些特征可以忽略，或不执行。另外，模块相互之间的连接可以通过一些接口，也可以是电性或其它形式。上述 模块作为时序控制器41的组成部分，可以是或者也可以不是物理框，既可以位于一个地方，也可分布到多个网络单元上，既可采用软件功能框的形式实现，也可采用硬件的形式实现。
在此基础上，以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (13)

  1. 一种显示装置的驱动方法，其中，所述方法包括：
    将所述显示装置显示时的静态帧分为第一帧和第二帧，且所述第二帧包括第一子帧和第二子帧，其中所述第一帧的显示期间的时长和所述第二帧的显示期间的时长相等；
    在所述第一帧和所述第一子帧的显示期间输出灰阶画面，其中，在所述第一帧的显示期间，所述显示装置的多条栅极线依次开启，且所述显示装置的多条数据线输出灰阶电压以显示所述灰阶画面，在所述第一子帧的显示期间，所有所述栅极线关闭，且所述数据线停止输出所述灰阶电压；以及
    在所述第二子帧的显示期间，所述多条栅极线同时开启，且所述数据线输出暗态电压以输出暗态画面，其中所述第二子帧的显示期间的时长与所述静态帧的显示时长成正比。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    在所述显示装置显示时的动态帧的显示期间输出所述灰阶画面。
  3. 根据权利要求1所述的方法，其中，所述暗态画面包括黑画面和灰画面。
  4. 一种显示装置的驱动方法，其中，所述方法包括：
    将所述显示装置显示时的静态帧分为第一帧和第二帧，且所述第二帧包括第一子帧和第二子帧；
    在所述第一帧和所述第一子帧的显示期间输出灰阶画面；以及
    在所述第二子帧的显示期间输出暗态画面，其中所述第二子帧的显示期间的时长与所述静态帧的显示时长成正比。
  5. 根据权利要求4所述的方法，其中，
    在所述第一帧的显示期间，所述显示装置的多条栅极线依次开启，且所述显示装置的多条数据线输出灰阶电压以显示所述灰阶画面；
    在所述第一子帧的显示期间，所有所述栅极线关闭，且所述数据线停止输出所述灰阶电压；
    在所述第二子帧的显示期间，所述多条栅极线同时开启，且所述数据 线输出暗态电压以显示所述暗态画面。
  6. 根据权利要求4所述的方法，其中，所述第一帧的显示期间的时长和所述第二帧的显示期间的时长相等。
  7. 根据权利要求4所述的方法，其中，所述方法还包括：
    在所述显示装置显示时的动态帧的显示期间输出所述灰阶画面。
  8. 根据权利要求4所述的方法，其中，所述暗态画面包括黑画面和灰画面。
  9. 一种显示装置，其中，包括时序控制器以及用于驱动数据线的数据驱动器，所述时序控制器包括：
    侦测模块，用于侦测所述显示装置是否进入静态帧的显示期间；
    时钟模块，用于将所述静态帧的显示期间分为第一帧和第二帧这两个显示期间，且所述第二帧包括第一子帧和第二子帧；
    计时模块，用于计时所述静态帧的显示时长；
    控制模块，用于控制所述数据驱动器使得所述显示装置在所述第一帧的显示期间和所述第一子帧的显示期间输出灰阶画面、在所述第二子帧的显示期间输出暗态画面，其中所述第二子帧的显示期间的时长与所述静态帧的显示时长成正比。
  10. 根据权利要求9所述的显示装置，其中，所述显示装置还包括多条栅极线以及用于驱动所述栅极线的栅极驱动器，
    在所述第一帧的显示期间，所述控制模块用于控制所述栅极驱动器依次开启所述多条栅极线，且控制所述数据驱动器输出灰阶电压给所述数据线以显示所述灰阶画面；
    在所述第一子帧的显示期间，所述控制模块用于控制所述栅极驱动器关闭所有所述栅极线关闭，且控制所述数据驱动器停止输出所述灰阶电压给所述数据线；
    在所述第二子帧的显示期间，所述控制模块用于控制所述栅极驱动器同时开启所述多条栅极线，且控制所述数据驱动器输出暗态电压给所述数据线以显示所述暗态画面。
  11. 根据权利要求10所述的显示装置，其中，所述侦测模块还用于侦测所述显示装置是否进入动态帧的显示期间，若是，则在所述动态帧的显 示期间，所述控制模块用于控制所述栅极驱动器依次开启所述多条栅极线，且控制所述数据驱动器输出灰阶电压给所述数据线以显示所述灰阶画面。
  12. 根据权利要求9所述的显示装置，其中，所述第一帧的显示期间的时长和所述第二帧的显示期间的时长相等。
  13. 根据权利要求9所述的显示装置，其中，所述暗态画面包括黑画面和灰画面。
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