WO2019080437A1 - 一种显示装置及其驱动方法和驱动系统 - Google Patents

一种显示装置及其驱动方法和驱动系统

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Publication number
WO2019080437A1
WO2019080437A1 PCT/CN2018/078856 CN2018078856W WO2019080437A1 WO 2019080437 A1 WO2019080437 A1 WO 2019080437A1 CN 2018078856 W CN2018078856 W CN 2018078856W WO 2019080437 A1 WO2019080437 A1 WO 2019080437A1
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WO
WIPO (PCT)
Prior art keywords
driving
signal
driving signal
spread
module
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/CN2018/078856
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English (en)
French (fr)
Inventor
黄北洲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HKC Co Ltd
Original Assignee
HKC Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Priority to US16/756,891 priority Critical patent/US11114006B2/en
Publication of WO2019080437A1 publication Critical patent/WO2019080437A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/08—Details of image data interface between the display device controller and the data line driver circuit

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.
  • electromagnetic interference Electromagnetic Interference
  • EMI electromagnetic interference
  • the essence of the electromagnetic interference test is to detect the energy value of the product radiated at each frequency segment. Since the components of the display product operate at several fixed frequencies, if the energy value of the electromagnetic interference radiated in a certain frequency band exceeds the standard during the test, the spread spectrum setting is required.
  • the clock signal outputted by the control module of the display product may be spread, and the driving signal outputted by the control module may be spread, and the clock signal and the driving signal are spread.
  • the actual spread frequency exceeds the expected value, the source drive module cannot receive data normally, causing the display panel to be abnormal.
  • the embodiment of the present application provides a display device, a driving method thereof, and a driving system, which are intended to solve the problem of electromagnetic interference of a display product currently being displayed, and may spread the frequency of a clock signal outputted by a control module of a display product.
  • the driving signal outputted by the control module is spread.
  • the clock signal and the driving signal are both spread, causing the actual spread frequency to exceed the expected value, the source drive module cannot receive the data normally, causing the display panel to be abnormal. .
  • the embodiment of the present application provides a driving method of a display device, where the display device includes a control module, a source driving module, and a display panel, and the method includes:
  • the driving signal When receiving the driving signal, detecting whether the driving signal is spread, the driving signal is used to drive the display panel;
  • the spread clock signal is output to the source driving module.
  • the preset spread ratio ranges from 2% to 5%.
  • the detecting whether the driving signal is spread or not comprises:
  • the driving signal does not coincide with the frequency of the preset driving signal, it is determined that the driving signal is spread.
  • the detecting whether the driving signal is consistent with the frequency of the preset driving signal comprises:
  • the rate of change is less than or equal to the preset threshold, it is determined that the driving signal is consistent with the frequency of the preset driving signal.
  • the preset threshold ranges from 2% to 5%.
  • the method before the outputting the clock signal output by the control module to the source driving module, the method includes:
  • the preset threshold ranges from 2% to 5%.
  • the detecting whether the driving signal is spread or not comprises:
  • the driving signal is a constant frequency signal, determining that the driving signal is not spread
  • the drive signal is a variable frequency signal, it is determined that the drive signal is spread.
  • control module is connected to the source driving module, the source driving module is connected to the display panel, the control module is a screen driving board, and the source driving module is a film source.
  • the pole driving chip is any one of a thin film transistor liquid crystal display panel, an organic electric laser display panel or a quantum dot light emitting diode display panel.
  • the embodiment of the present application further provides a driving system for a display device, where the display device includes a control module, a source driving module, and a display panel, and the system includes:
  • a spread spectrum detecting module configured to detect whether the driving signal is spread, when the driving signal is received, and the driving signal is used to drive the display panel;
  • a spread spectrum judging module configured to output a clock signal output by the control module to the source driving module if the driving signal is spread spectrum
  • a spread spectrum module configured to perform a spreading operation on the clock signal according to a preset spreading ratio if the driving signal is not spread;
  • a data output module configured to output the spread clock signal to the source driving module.
  • the preset spread ratio ranges from 2% to 5%.
  • the spread spectrum detection module includes:
  • a first spread spectrum detecting unit configured to detect whether the driving signal is consistent with a frequency of the preset driving signal
  • a first determining unit configured to determine that the driving signal is not spread if the driving signal is consistent with a frequency of the preset driving signal
  • the second determining unit is configured to determine that the driving signal is spread if the driving signal does not match the frequency of the preset driving signal.
  • the first spread spectrum detecting unit is configured to:
  • the rate of change is less than or equal to the preset threshold, it is determined that the driving signal is consistent with the frequency of the preset driving signal.
  • the preset threshold ranges from 2% to 5%.
  • the spread spectrum detection module includes:
  • a second spread spectrum detecting unit configured to detect a spread ratio of the driving signal
  • a data output unit configured to enter an operation of outputting a clock signal output by the control module to the source driving module if the spread ratio is less than or equal to a preset threshold
  • the prompting unit is configured to issue a prompt signal if the spread ratio is greater than a preset threshold.
  • the preset threshold ranges from 2% to 5%.
  • the spread spectrum detection module includes:
  • a third spread spectrum detecting unit configured to detect whether the driving signal is a variable frequency signal
  • a third determining unit configured to determine that the driving signal is not spread if the driving signal is a constant frequency signal
  • the fourth determining unit is configured to determine that the driving signal is spread if the driving signal is a variable frequency signal.
  • control module is connected to the source driving module, the source driving module is connected to the display panel, the control module is a screen driving board, and the source driving module is a film source.
  • the pole driving chip is any one of a thin film transistor liquid crystal display panel, an organic electric laser display panel or a quantum dot light emitting diode display panel.
  • the embodiment of the present application further provides a driving method of a display device, where the display device includes a control module, a source driving module, and a display panel, and the method includes:
  • the driving signal When the driving signal is received, detecting whether the driving signal is a variable frequency signal, and the driving signal is used to drive the display panel;
  • the driving signal is a constant frequency signal, outputting a clock signal output by the control module to the source driving module;
  • the driving signal is a variable frequency signal, performing a spreading operation on the clock signal according to a preset spreading ratio
  • the spread clock signal is output to the source driving module.
  • control module is connected to the source driving module, the source driving module is connected to the display panel, the control module is a screen driving board, and the source driving module is a film source.
  • the pole driving chip is any one of a thin film transistor liquid crystal display panel, an organic electric laser display panel or a quantum dot light emitting diode display panel.
  • the embodiment of the present application detects whether the driving signal is spread; if yes, outputs the clock signal output by the control module to the source driving module; if not, the clock signal according to the preset spreading ratio After the spread spectrum operation, the output is output to the source drive module; the display screen of the display panel can be ensured while the electromagnetic interference of the display device is effectively reduced.
  • FIG. 1 is a flowchart of a driving method of a display device according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of waveforms of a driving signal before and after spreading of a driving signal according to an embodiment of the present application
  • FIG. 3 is a flowchart of a driving method of a display device according to another embodiment of the present application.
  • FIG. 4 is a flowchart of a driving method of a display device according to still another embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a driving system of a display device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a driving system of a display device according to another embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a driving system of a display device according to still another embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a display device according to an embodiment of the present application.
  • an embodiment of the present application provides a driving method of a display device, which is applied to a display device, where the display device includes a control module, a source driving module, and a display panel, and the control module is connected to the source driving module.
  • the source driver module is connected to the display panel.
  • control module includes a universal integrated circuit, such as a CPU (Central) Processing Unit, central processing unit, or via ASIC (Application Specific Integrated Circuit) is implemented.
  • the control module can also be a screen drive board (TCON, Timing Controller) of the display device.
  • 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 chip (Source) Driver IC) or thin film source driver chip (S-COF, Source-Chip On Film) and so on.
  • a source driver chip Source
  • S-COF thin film source driver chip
  • the display panel can be any type of display panel, for example based on TFT-LCD (Thin Liquid crystal display panel of Film Transistor Liquid Crystal Display, liquid crystal display panel based on LCD (liquid crystal display) technology, based on OLED (Organic Electroluminescence display panel of Electro Luminesence Display, organic quantum laser display technology, quantum dot light-emitting diode display panel or curved display panel based on QLED (Quantum Dot Light Emitting Diodes) technology.
  • TFT-LCD Thin Liquid crystal display panel of Film Transistor Liquid Crystal Display
  • LCD liquid crystal display
  • OLED Organic Electroluminescence display panel of Electro Luminesence Display
  • organic quantum laser display technology quantum dot light-emitting diode display panel
  • QLED Quadantum Dot Light Emitting Diodes
  • the method includes:
  • Step S10 When receiving the driving signal, detecting whether the driving signal is spread, and the driving signal is used to drive the display panel.
  • the spread spectrum refers to changing the normal signal of the fixed frequency outputted by the control module to the frequency conversion signal whose frequency is positive and negative around the frequency of the normal signal, and dispersing the energy of the electromagnetic interference of the normal signal on the original frequency segment to On the frequency segment adjacent to the original frequency segment.
  • the spread ratio is a unit of measurement of the maximum change of the frequency conversion signal relative to the original frequency of the normal signal and the original frequency. The larger the spread ratio, the larger the frequency change.
  • the spread ratio cannot exceed a certain threshold. If the threshold is exceeded, the source driver module may not receive the clock signal and the drive signal normally, causing the display screen to be abnormal.
  • determining whether the driving signal is spread whether by detecting whether the driving signal is a frequency conversion signal, or whether the frequency of the driving signal is greater than a preset threshold by a preset rate of change of a frequency of the normal driving signal Implementation, if yes, is spread; the preset threshold ranges from 2% to 5%, for example, 2%, 3%, 4% or 5%.
  • FIG. 2 a schematic diagram of waveforms before and after spreading of the driving signal is exemplarily shown, wherein the driving signal before the spreading is a periodic signal, the frequency is fixed, and the driving signal after the spreading is positive and negative.
  • the swing changes.
  • Step S20 If the driving signal is spread, output a clock signal output by the control module to the source driving module.
  • Step S30 If the driving signal is not spread, the frequency-provisioning operation is performed on the clock signal according to a preset spreading ratio.
  • the preset spread ratio is in the range of 2% to 5%, for example, 2%, 3%, 4%, or 5%.
  • Step S40 output the spread clock signal to the source driving module.
  • the driving method can be performed by a control module of the display device, and each method step in the driving method can be a software program step executed by the control module.
  • the driving signal when the driving signal is received, detecting whether the driving signal is spread; if yes, outputting the clock signal output by the control module to the source driving module; if not, performing the clock signal according to the preset spreading ratio After the spread spectrum operation, the output is output to the source drive module; the display screen of the display panel can be ensured while the electromagnetic interference of the display device is effectively reduced.
  • step S10 includes:
  • Step S111 detecting whether the driving signal is consistent with the frequency of the preset driving signal
  • Step S112 If the driving signal is consistent with the frequency of the preset driving signal, it is determined that the driving signal is not spread;
  • Step S113 If the driving signal does not match the frequency of the preset driving signal, it is determined that the driving signal is spread.
  • the preset driving signal refers to a normal driving signal that is not spread by the control module, and when the display panel is driven by the normal driving signal, the display screen is not abnormal.
  • the method before step S20, the method includes:
  • Step S121 detecting a spread ratio of the driving signal
  • Step S122 If the spread ratio is less than or equal to a preset threshold, enter an operation of outputting a clock signal output by the control module to the source driving module;
  • Step S123 If the spread ratio is greater than a preset threshold, a prompt signal is issued.
  • the spread ratio of the drive signal is the percentage of the maximum change in the frequency of the drive signal relative to the original frequency of the normal drive signal to the original frequency.
  • the preset threshold ranges from 2% to 5%, for example, it can be 2%, 3%, 4% or 5%.
  • An embodiment of the present application further provides a driving method of a display device, including:
  • the driving signal When the driving signal is received, detecting whether the driving signal is a variable frequency signal, and the driving signal is used to drive the display panel;
  • the driving signal is a constant frequency signal, outputting a clock signal output by the control module to the source driving module;
  • the driving signal is a variable frequency signal, performing a spreading operation on the clock signal according to a preset spreading ratio
  • the spread clock signal is output to the source driving module.
  • the constant frequency signal refers to a signal whose frequency has a certain regularity and which has no significant fluctuations in periodic variation.
  • an embodiment of the present application provides a driving system 100 for a display device, which is used to perform the method steps in the method embodiment corresponding to FIG. 1.
  • the driving system 100 includes:
  • the spread spectrum detecting module 10 is configured to detect, when the driving signal is received, whether the driving signal is spread, and the driving signal is used to drive the display panel;
  • the spread spectrum judging module 20 is configured to: if the driving signal is spread, output a clock signal output by the control module to the source driving module;
  • the spread spectrum module 30 is configured to perform a spreading operation on the clock signal according to a preset spreading ratio if the driving signal is not spread;
  • the data output module 40 is configured to output the spread clock signal to the source driving module.
  • the spread spectrum refers to changing the normal signal of the fixed frequency outputted by the control module to the frequency conversion signal whose frequency is positive and negative around the frequency of the normal signal, and dispersing the energy of the electromagnetic interference of the normal signal on the original frequency segment to On the frequency segment adjacent to the original frequency segment.
  • the spread ratio is a unit of measurement of the maximum change of the frequency conversion signal relative to the original frequency of the normal signal and the original frequency. The larger the spread ratio, the larger the frequency change.
  • the spread ratio cannot exceed a certain threshold. If the threshold is exceeded, the source driver module may not receive the clock signal and the drive signal normally, causing the display screen to be abnormal.
  • the drive system may be a software system in a control module of the display device, and each module in the drive system may be a program module of the software system.
  • determining whether the driving signal is spread whether by detecting whether the driving signal is a frequency conversion signal, or whether the frequency of the driving signal is greater than a preset threshold by a preset rate of change of a frequency of the normal driving signal Implementation, if yes, is spread; the preset threshold ranges from 2% to 5%, for example, 2%, 3%, 4% or 5%.
  • the preset spread ratio is in the range of 2% to 5%, for example, 2%, 3%, 4%, or 5%.
  • the driving signal when the driving signal is received, detecting whether the driving signal is spread; if yes, outputting the clock signal output by the control module to the source driving module; if not, performing the clock signal according to the preset spreading ratio After the spread spectrum operation, the output is output to the source drive module; the display screen of the display panel can be ensured while the electromagnetic interference of the display device is effectively reduced.
  • the spread spectrum detection module 10 includes a structure for performing the method steps in the method embodiment corresponding to FIG. 3, including:
  • the first spread spectrum detecting unit 111 is configured to detect whether the driving signal and the preset driving signal have the same frequency
  • the first determining unit 112 is configured to determine that the driving signal is not spread if the driving signal is consistent with the frequency of the preset driving signal;
  • the second determining unit 113 is configured to determine that the driving signal is spread if the driving signal does not match the frequency of the preset driving signal.
  • the preset driving signal refers to a normal driving signal that is not spread by the control module, and when the display panel is driven by the normal driving signal, the display screen is not abnormal.
  • the spread spectrum detection module 10 includes a structure for performing the method steps in the method embodiment corresponding to FIG. 4, including:
  • a second spread spectrum detecting unit 121 configured to detect a spread ratio of the driving signal
  • the data output unit 122 is configured to: if the spread ratio is less than or equal to a preset threshold, enter an operation of outputting a clock signal output by the control module to the source driving module;
  • the prompting unit 123 is configured to issue a prompt signal if the spread ratio is greater than a preset threshold.
  • the spread ratio of the drive signal is the percentage of the maximum change in the frequency of the drive signal relative to the original frequency of the normal drive signal to the original frequency.
  • the preset threshold ranges from 2% to 5%, for example, it can be 2%, 3%, 4% or 5%.
  • the spread spectrum detection module includes:
  • a third spread spectrum detecting unit configured to detect whether the driving signal is a variable frequency signal
  • a third determining unit configured to determine that the driving signal is not spread if the driving signal is a constant frequency signal
  • the fourth determining unit is configured to determine that the driving signal is spread if the driving signal is a variable frequency signal.
  • An embodiment of the present application further provides a driving system for a display device, including:
  • the spread spectrum detecting module is configured to detect whether the driving signal is a variable frequency signal when the driving signal is received, and the driving signal is used to drive the display panel;
  • a spread spectrum judging module configured to output a clock signal output by the control module to the source driving module if the driving signal is a constant frequency signal
  • a spread spectrum module configured to: if the driving signal is a variable frequency signal, perform a spreading operation on the clock signal according to a preset spreading ratio;
  • a data output module configured to output the spread clock signal to the source driving module.
  • an embodiment of the present application provides a display device 200 including a display panel 201, a control module 202, a source driving module 203, and the driving system 100 in the above embodiment.
  • the display panel can be any type of display panel, for example based on TFT-LCD (Thin Liquid crystal display panel of Film Transistor Liquid Crystal Display, liquid crystal display panel based on LCD (liquid crystal display) technology, based on OLED (Organic Electroluminescence display panel of organic electroluminescence display technology, quantum dot light-emitting diode display panel based on QLED (Quantum Dot Light Emitting Diodes) technology, or curved display panel.
  • TFT-LCD Thin Liquid crystal display panel of Film Transistor Liquid Crystal Display
  • LCD liquid crystal display
  • OLED Organic Electroluminescence display panel of organic electroluminescence display technology
  • QLED Quantum Dot Light Emitting Diodes
  • the control module 202 is configured to output a clock signal.
  • control module can be a screen driver board (TCON, Timing) Controller), also through general-purpose integrated circuits, such as CPU (Central) Processing Unit, central processing unit, or via ASIC (Application Specific Integrated Circuit) is implemented.
  • TCON screen driver board
  • general-purpose integrated circuits such as CPU (Central) Processing Unit, central processing unit, or via ASIC (Application Specific Integrated Circuit) is implemented.
  • the source driving module 203 is connected to the display panel 201 and the control module 202 for driving the display panel 201 according to the driving signal and the clock signal.
  • the drive system 100 is coupled between the control module 202 and the source drive module 203.
  • the modules in all embodiments of the present application can be through a general-purpose integrated circuit, such as a CPU (Central Processing Unit, central processing unit, or via ASIC (Application Specific Integrated Circuit) is implemented.
  • a general-purpose integrated circuit such as a CPU (Central Processing Unit, central processing unit, or via ASIC (Application Specific Integrated Circuit) is implemented.
  • the units in the apparatus of the embodiment of the present application may be combined, divided, and deleted according to actual needs.
  • the storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read-Only) Memory, ROM) or random storage memory (Random Access Memory, RAM), etc.

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Abstract

一种显示装置及其驱动方法和驱动系统，所述方法包括：接收到驱动信号时，检测所述驱动信号是否被展频，所述驱动信号用于对所述显示面板进行驱动（S10）；若所述驱动信号被展频，则将所述控制模块输出的时钟信号输出至所述源极驱动模块（S20）；若所述驱动信号未被展频，则按照预设展频比率，对所述时钟信号进行展频操作（S30）；将展频后的所述时钟信号输出至所述源极驱动模块（S40）。

Description

一种显示装置及其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。实际的显示产品开发检测过程中，法规有规定需要进行电磁干扰(Electromagnetic Interference，EMI)测试，旨在防止显示产品对周围的物品或人体造成不良的影响。电磁干扰测试的实质是检测产品在每个频率段辐射的能量值。因为显示产品的元器件工作在几个固定频率上，所以当测试过程中如果发现电磁干扰在某一频率段辐射的能量值超标时，就需要进行展频设定。
 技术问题
目前为改善显示产品的电磁干扰状况，可能会对显示产品的控制模块输出的时钟信号进行展频，也可能会对控制模块输出的驱动信号进行展频，当时钟信号和驱动信号都被展频，造成实际的展频超过预期值时，会造成源极驱动模块无法正常接收数据，造成显示面板的画面异常。
 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，旨在解决目前为改善显示产品的电磁干扰状况，可能会对显示产品的控制模块输出的时钟信号进行展频，也可能会对控制模块输出的驱动信号进行展频，当时钟信号和驱动信号都被展频，造成实际的展频超过预期值时，会造成源极驱动模块无法正常接收数据，造成显示面板的画面异常的问题。
本申请实施例提供一种显示装置的驱动方法，所述显示装置包括控制模块、源极驱动模块和显示面板，所述方法包括：
接收到驱动信号时，检测所述驱动信号是否被展频，所述驱动信号用于对所述显示面板进行驱动；
若所述驱动信号被展频，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
若所述驱动信号未被展频，则按照预设展频比率，对所述时钟信号进行展频操作；
将展频后的所述时钟信号输出至所述源极驱动模块。
在一个实施例中，所述预设展频比率的取值范围为2%~5%。
在一个实施例中，所述检测所述驱动信号是否被展频，包括：
检测所述驱动信号与预设驱动信号的频率是否一致；
若所述驱动信号与预设驱动信号的频率一致，则判定所述驱动信号未被展频；
若所述驱动信号与预设驱动信号的频率不一致，则判定所述驱动信号被展频。
在一个实施例中，所述检测所述驱动信号与预设驱动信号的频率是否一致，包括：
检测所述驱动信号的频率相对预设驱动信号的频率的变化率是否大于预设阈值；
若所述变化率大于预设阈值，则判定所述驱动信号与预设驱动信号的频率不一致；
若所述变化率小于或等于预设阈值，则判定所述驱动信号与预设驱动信号的频率一致。
在一个实施例中，所述预设阈值的取值范围为2%~5%。
在一个实施例中，所述将所述控制模块输出的时钟信号输出至所述源极驱动模块之前，包括：
检测所述驱动信号的展频比率；
若所述展频比率小于或等于预设阈值，则进入将所述控制模块输出的时钟信号输出至所述源极驱动模块的操作；
若所述展频比率大于预设阈值，则发出提示信号。
在一个实施例中，所述预设阈值的取值范围为2%~5%。
在一个实施例中，所述检测所述驱动信号是否被展频，包括：
检测所述驱动信号是否为变频信号；
若所述驱动信号为恒频信号，则判定所述驱动信号未被展频；
若所述驱动信号为变频信号，则判定所述驱动信号被展频。
在一个实施例中，所述控制模块与所述源极驱动模块连接，所述源极驱动模块与所述显示面板连接，所述控制模块为屏驱动板，所述源极驱动模块为薄膜源极驱动芯片，所述显示面板为薄膜晶体管液晶显示面板、有机电激光显示面板或量子点发光二极管显示面板中的任一种。
本申请实施例还提供一种显示装置的驱动系统，所述显示装置包括控制模块、源极驱动模块和显示面板，所述系统包括：
展频侦测模块，用于接收到驱动信号时，检测所述驱动信号是否被展频，所述驱动信号用于对所述显示面板进行驱动；
展频判断模块，用于若所述驱动信号被展频，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
展频模块，用于若所述驱动信号未被展频，则按照预设展频比率，对所述时钟信号进行展频操作；
数据输出模块，用于将展频后的所述时钟信号输出至所述源极驱动模块。
在一个实施例中，所述预设展频比率的取值范围为2%~5%。在一个实施例中，所述展频侦测模块包括：
第一展频侦测单元，用于检测所述驱动信号与预设驱动信号的频率是否一致；
第一判定单元，用于若所述驱动信号与预设驱动信号的频率一致，则判定所述驱动信号未被展频；
第二判定单元，用于若所述驱动信号与预设驱动信号的频率不一致，则判定所述驱动信号被展频。
所述第一展频侦测单元用于：
在一个实施例中，检测所述驱动信号的频率相对预设驱动信号的频率的变化率是否大于预设阈值；
若所述变化率大于预设阈值，则判定所述驱动信号与预设驱动信号的频率不一致；
若所述变化率小于或等于预设阈值，则判定所述驱动信号与预设驱动信号的频率一致。
在一个实施例中，所述预设阈值的取值范围为2%~5%。
在一个实施例中，所述展频侦测模块包括：
第二展频侦测单元，用于检测所述驱动信号的展频比率；
数据输出单元，用于若所述展频比率小于或等于预设阈值，则进入将所述控制模块输出的时钟信号输出至所述源极驱动模块的操作；
提示单元，用于若所述展频比率大于预设阈值，则发出提示信号。
在一个实施例中，所述预设阈值的取值范围为2%~5%。
在一个实施例中，所述展频侦测模块包括：
第三展频侦测单元，用于检测所述驱动信号是否为变频信号；
第三判定单元，用于若所述驱动信号为恒频信号，则判定所述驱动信号未被展频；
第四判定单元，用于若所述驱动信号为变频信号，则判定所述驱动信号被展频。
在一个实施例中，所述控制模块与所述源极驱动模块连接，所述源极驱动模块与所述显示面板连接，所述控制模块为屏驱动板，所述源极驱动模块为薄膜源极驱动芯片，所述显示面板为薄膜晶体管液晶显示面板、有机电激光显示面板或量子点发光二极管显示面板中的任一种。
本申请实施例还提供一种显示装置的驱动方法，所述显示装置包括控制模块、源极驱动模块和显示面板，所述方法包括：
接收到驱动信号时，检测所述驱动信号是否为变频信号，所述驱动信号用于对所述显示面板进行驱动；
若所述驱动信号为恒频信号，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
若所述驱动信号为变频信号，则按照预设展频比率，对所述时钟信号进行展频操作；
将展频后的所述时钟信号输出至所述源极驱动模块。
在一个实施例中，所述控制模块与所述源极驱动模块连接，所述源极驱动模块与所述显示面板连接，所述控制模块为屏驱动板，所述源极驱动模块为薄膜源极驱动芯片，所述显示面板为薄膜晶体管液晶显示面板、有机电激光显示面板或量子点发光二极管显示面板中的任一种。
 有益效果
本申请实施例通过接收到驱动信号时，检测驱动信号是否被展频；若是，则将控制模块输出的时钟信号输出至源极驱动模块；若否，则按照预设展频比率，对时钟信号进行展频操作后输出至源极驱动模块；可以在有效降低显示装置的电磁干扰干扰的同时，保证显示面板的显示画面正常。
 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图；
图2是本申请的一个实施例提供的驱动信号展频前和展频后的波形示意图；
图3是本申请的另一个实施例提供的显示装置的驱动方法的流程图；
图4是本申请的再一个实施例提供的显示装置的驱动方法的流程图；
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示意图；
图6是本申请的另一个实施例提供的显示装置的驱动系统的结构示意图；
图7是本申请的再一个实施例提供的显示装置的驱动系统的结构示意图；
图8是本申请的一个实施例提供的显示装置的结构示意图。
 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，本申请的一个实施例提供一种显示装置的驱动方法，其应用于显示装置，显示装置包括控制模块、源极驱动模块和显示面板，控制模块与源极驱动模块连接，源极驱动模块与显示面板连接。
在应用中，控制模块包括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（TCON，Timing Controller）。
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，显示面板可以为任意类型的显示面板，例如基于TFT-LCD（Thin Film Transistor Liquid Crystal Display，薄膜晶体管液晶显示器）技术的液晶显示面板、基于LCD（ Liquid Crystal Display，液晶显示装置）技术的液晶显示面板、基于OLED（Organic Electro Luminesence 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。
所述方法包括：
步骤S10：接收到驱动信号时，检测所述驱动信号是否被展频，所述驱动信号用于对所述显示面板进行驱动。
在应用中，展频即是指将控制模块输出的固定频率的正常信号，变更为频率围绕正常信号的频率正、负波动的变频信号，将正常信号在原频率段上的电磁干扰的能量分散至邻近原频率段的频率段上。通常展频比率以变频信号相对正常信号的原频率的最大变化量与原频率的百分比为计量单位，展频比率越大则说明频率变化量越大。通常展频比率不能超过一定的阈值，若超过阈值，则可能造成源极驱动模块无法正常接收时钟信号和驱动信号，造成显示画面异常。
在应用中，判断驱动信号是否被展频，可以通过检测驱动信号是否为变频信号的方式，或者，驱动信号的频率相对预设的正常驱动信号的频率的变化率是否大于预设阈值的方式来实现，若是，则被展频；预设阈值的取值范围为2%~5%，例如，可以取值为2%、3%、4%或5%。
如图2所示，实例性的示出了驱动信号展频之前和展频之后的波形示意图，其中，展频之前的驱动信号为周期性信号，频率固定，展频之后的驱动信号具有正负摆动变化。
步骤S20：若所述驱动信号被展频，则将所述控制模块输出的时钟信号输出至所述源极驱动模块。
步骤S30：若所述驱动信号未被展频，则按照预设展频比率，对所述时钟信号进行展频操作。
在一个实施例中，预设展频比率的取值范围为2%~5%中任一数值，例如，可以取值为2%、3%、4%或5%。
步骤S40：将展频后的所述时钟信号输出至所述源极驱动模块。
在应用中，驱动方法可以通过显示装置的控制模块来执行，驱动方法中的各方法步骤可以为由控制模块来执行的软件程序步骤。
本实施例通过接收到驱动信号时，检测驱动信号是否被展频；若是，则将控制模块输出的时钟信号输出至源极驱动模块；若否，则按照预设展频比率，对时钟信号进行展频操作后输出至源极驱动模块；可以在有效降低显示装置的电磁干扰的同时，保证显示面板的显示画面正常。
如图3所示，在本申请的一个实施例中，步骤S10包括：
步骤S111：检测所述驱动信号与预设驱动信号的频率是否一致；
步骤S112：若所述驱动信号与预设驱动信号的频率一致，则判定所述驱动信号未被展频；
步骤S113：若所述驱动信号与预设驱动信号的频率不一致，则判定所述驱动信号被展频。
在应用中，预设驱动信号即是指控制模块输出的未被展频的正常驱动信号，利用该正常驱动信号驱动显示面板时，不会造成显示画面异常。
如图4所示，在本申请的一个实施例中，步骤S20之前包括：
步骤S121：检测所述驱动信号的展频比率；
步骤S122：若所述展频比率小于或等于预设阈值，则进入将所述控制模块输出的时钟信号输出至所述源极驱动模块的操作；
步骤S123：若所述展频比率大于预设阈值，则发出提示信号。
在应用中，驱动信号的展频比率即是指驱动信号的频率相对正常驱动信号的原频率的最大变化量与原频率的百分比。
在应用中，预设阈值的取值范围为2%~5%，例如，可以取值为2%、3%、4%或5%。
在应用中，判断驱动信号是否被展频，可以通过检测驱动信号是否为变频信号的方式。
本申请的一个实施例还提供一种显示装置的驱动方法，其包括：
接收到驱动信号时，检测所述驱动信号是否为变频信号，所述驱动信号用于对所述显示面板进行驱动；
若所述驱动信号为恒频信号，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
若所述驱动信号为变频信号，则按照预设展频比率，对所述时钟信号进行展频操作；
将展频后的所述时钟信号输出至所述源极驱动模块。
在应用中，恒频信号即是指频率具有一定的规律，呈周期性变化没有明显波动的信号。
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100，用于执行图1所对应的方法实施例中的方法步骤，该驱动系统100包括：
展频侦测模块10，用于接收到驱动信号时，检测所述驱动信号是否被展频，所述驱动信号用于对所述显示面板进行驱动；
展频判断模块20，用于若所述驱动信号被展频，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
展频模块30，用于若所述驱动信号未被展频，则按照预设展频比率，对所述时钟信号进行展频操作；
数据输出模块40，用于将展频后的所述时钟信号输出至所述源极驱动模块。
在应用中，展频即是指将控制模块输出的固定频率的正常信号，变更为频率围绕正常信号的频率正、负波动的变频信号，将正常信号在原频率段上的电磁干扰的能量分散至邻近原频率段的频率段上。通常展频比率以变频信号相对正常信号的原频率的最大变化量与原频率的百分比为计量单位，展频比率越大则说明频率变化量越大。通常展频比率不能超过一定的阈值，若超过阈值，则可能造成源极驱动模块无法正常接收时钟信号和驱动信号，造成显示画面异常。
在应用中，驱动系统可以为显示装置的控制模块中的软件系统，驱动系统中的各模块可以为软件系统的程序模块。
在应用中，判断驱动信号是否被展频，可以通过检测驱动信号是否为变频信号的方式，或者，驱动信号的频率相对预设的正常驱动信号的频率的变化率是否大于预设阈值的方式来实现，若是，则被展频；预设阈值的取值范围为2%~5%，例如，可以取值为2%、3%、4%或5%。
在一个实施例中，预设展频比率的取值范围为2%~5%中任一数值，例如，可以取值为2%、3%、4%或5%。
本实施例通过接收到驱动信号时，检测驱动信号是否被展频；若是，则将控制模块输出的时钟信号输出至源极驱动模块；若否，则按照预设展频比率，对时钟信号进行展频操作后输出至源极驱动模块；可以在有效降低显示装置的电磁干扰干扰的同时，保证显示面板的显示画面正常。
如图6所示，在本申请的一个实施例中，展频侦测模块10包括用于执行图3所对应的方法实施例中的方法步骤的结构，其包括：
第一展频侦测单元111，用于检测所述驱动信号与预设驱动信号的频率是否一致；
第一判定单元112，用于若所述驱动信号与预设驱动信号的频率一致，则判定所述驱动信号未被展频；
第二判定单元113，用于若所述驱动信号与预设驱动信号的频率不一致，则判定所述驱动信号被展频。
在应用中，预设驱动信号即是指控制模块输出的未被展频的正常驱动信号，利用该正常驱动信号驱动显示面板时，不会造成显示画面异常。
如图7所示，在本申请的一个实施例中，展频侦测模块10包括用于执行图4所对应的方法实施例中的方法步骤的结构，其包括：
第二展频侦测单元121，用于检测所述驱动信号的展频比率；
数据输出单元122，用于若所述展频比率小于或等于预设阈值，则进入将所述控制模块输出的时钟信号输出至所述源极驱动模块的操作；
提示单元123，用于若所述展频比率大于预设阈值，则发出提示信号。
在应用中，驱动信号的展频比率即是指驱动信号的频率相对正常驱动信号的原频率的最大变化量与原频率的百分比。
在应用中，预设阈值的取值范围为2%~5%，例如，可以取值为2%、3%、4%或5%。
在一个实施例中，展频侦测模块包括：
第三展频侦测单元，用于检测所述驱动信号是否为变频信号；
第三判定单元，用于若所述驱动信号为恒频信号，则判定所述驱动信号未被展频；
第四判定单元，用于若所述驱动信号为变频信号，则判定所述驱动信号被展频。
本申请的一个实施例还提供一种显示装置的驱动系统，其包括：
展频侦测模块，用于接收到驱动信号时，检测所述驱动信号是否为变频信号，所述驱动信号用于对所述显示面板进行驱动；
展频判断模块，用于若所述驱动信号为恒频信号，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
展频模块，用于若所述驱动信号为变频信号，则按照预设展频比率，对所述时钟信号进行展频操作；
数据输出模块，用于将展频后的所述时钟信号输出至所述源极驱动模块。
如图8所示，本申请的一个实施例，提供一种显示装置200，其包括显示面板201、控制模块202、源极驱动模块203和上述实施例中的驱动系统100。
在应用中，显示面板可以为任意类型的显示面板，例如基于TFT-LCD（Thin Film Transistor Liquid Crystal Display，薄膜晶体管液晶显示器）技术的液晶显示面板、基于LCD（ Liquid Crystal Display，液晶显示装置）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。
控制模块202，用于输出时钟信号。
在应用中，控制模块可以是屏驱动板（TCON，Timing Controller），也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。
源极驱动模块203，与显示面板201和控制模块202连接，用于根据驱动信号和时钟信号对显示面板201进行驱动。
驱动系统100连接在控制模块202和源极驱动模块203之间。
本申请所有实施例中的模块，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。
本申请实施例装置中的单元可以根据实际需要进行合并、划分和删减。
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。
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，所述显示装置包括控制模块、源极驱动模块和显示面板，所述方法包括：
    接收到驱动信号时，检测所述驱动信号是否被展频，所述驱动信号用于对所述显示面板进行驱动；
    若所述驱动信号被展频，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
    若所述驱动信号未被展频，则按照预设展频比率，对所述时钟信号进行展频操作；
    将展频后的所述时钟信号输出至所述源极驱动模块。
  2. 如权利要求1所述的显示装置的驱动方法，其中，所述预设展频比率的取值范围为2%~5%。
  3. 如权利要求1所述的显示装置的驱动方法，其中，所述检测所述驱动信号是否被展频，包括：
    检测所述驱动信号与预设驱动信号的频率是否一致；
    若所述驱动信号与预设驱动信号的频率一致，则判定所述驱动信号未被展频；
    若所述驱动信号与预设驱动信号的频率不一致，则判定所述驱动信号被展频。
  4. 如权利要求3所述的显示装置的驱动方法，其中，所述检测所述驱动信号与预设驱动信号的频率是否一致，包括：
    检测所述驱动信号的频率相对预设驱动信号的频率的变化率是否大于预设阈值；
    若所述变化率大于预设阈值，则判定所述驱动信号与预设驱动信号的频率不一致；
    若所述变化率小于或等于预设阈值，则判定所述驱动信号与预设驱动信号的频率一致。
  5. 如权利要求4所述的显示装置的驱动方法，其中，所述预设阈值的取值范围为2%~5%。
  6. 如权利要求1所述的显示装置的驱动方法，其中，所述将所述控制模块输出的时钟信号输出至所述源极驱动模块之前，包括：
    检测所述驱动信号的展频比率；
    若所述展频比率小于或等于预设阈值，则进入将所述控制模块输出的时钟信号输出至所述源极驱动模块的操作；
    若所述展频比率大于预设阈值，则发出提示信号。
  7. 如权利要求6所述的显示装置的驱动方法，其中，所述预设阈值的取值范围为2%~5%。
  8. 如权利要求1所述的显示装置的驱动方法，其中，所述检测所述驱动信号是否被展频，包括：
    检测所述驱动信号是否为变频信号；
    若所述驱动信号为恒频信号，则判定所述驱动信号未被展频；
    若所述驱动信号为变频信号，则判定所述驱动信号被展频。
  9. 如权利要求1所述的显示装置的驱动方法，其中，所述控制模块与所述源极驱动模块连接，所述源极驱动模块与所述显示面板连接，所述控制模块为屏驱动板，所述源极驱动模块为薄膜源极驱动芯片，所述显示面板为薄膜晶体管液晶显示面板、有机电激光显示面板或量子点发光二极管显示面板中的任一种。
  10. 一种显示装置的驱动系统，其中，所述显示装置包括控制模块、源极驱动模块和显示面板，所述系统包括：
    展频侦测模块，用于接收到驱动信号时，检测所述驱动信号是否被展频，所述驱动信号用于对所述显示面板进行驱动；
    展频判断模块，用于若所述驱动信号被展频，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
    展频模块，用于若所述驱动信号未被展频，则按照预设展频比率，对所述时钟信号进行展频操作；
    数据输出模块，用于将展频后的所述时钟信号输出至所述源极驱动模块。
  11. 如权利要求10所述的显示装置的驱动系统，其中，所述预设展频比率的取值范围为2%~5%。
  12. 如权利要求10所述的显示装置的驱动系统，其中，所述展频侦测模块包括：
    第一展频侦测单元，用于检测所述驱动信号与预设驱动信号的频率是否一致；
    第一判定单元，用于若所述驱动信号与预设驱动信号的频率一致，则判定所述驱动信号未被展频；
    第二判定单元，用于若所述驱动信号与预设驱动信号的频率不一致，则判定所述驱动信号被展频。
  13. 如权利要求12所述的显示装置的驱动系统，其中，所述第一展频侦测单元用于：
    检测所述驱动信号的频率相对预设驱动信号的频率的变化率是否大于预设阈值；
    若所述变化率大于预设阈值，则判定所述驱动信号与预设驱动信号的频率不一致；
    若所述变化率小于或等于预设阈值，则判定所述驱动信号与预设驱动信号的频率一致。
  14. 如权利要求13所述的显示装置的驱动系统，其中，所述预设阈值的取值范围为2%~5%。
  15. 如权利要求10所述的显示装置的驱动系统，其中，所述展频侦测模块包括：
    第二展频侦测单元，用于检测所述驱动信号的展频比率；
    数据输出单元，用于若所述展频比率小于或等于预设阈值，则进入将所述控制模块输出的时钟信号输出至所述源极驱动模块的操作；
    提示单元，用于若所述展频比率大于预设阈值，则发出提示信号。
  16. 如权利要求15所述的显示装置的驱动系统，其中，所述预设阈值的取值范围为2%~5%。
  17. 如权利要求10所述的显示装置的驱动系统，其中，所述展频侦测模块包括：
    第三展频侦测单元，用于检测所述驱动信号是否为变频信号；
    第三判定单元，用于若所述驱动信号为恒频信号，则判定所述驱动信号未被展频；
    第四判定单元，用于若所述驱动信号为变频信号，则判定所述驱动信号被展频。
  18. 如权利要求10所述的显示装置的驱动系统，其中，所述控制模块与所述源极驱动模块连接，所述源极驱动模块与所述显示面板连接，所述控制模块为屏驱动板，所述源极驱动模块为薄膜源极驱动芯片，所述显示面板为薄膜晶体管液晶显示面板、有机电激光显示面板或量子点发光二极管显示面板中的任一种。
  19. 一种显示装置的驱动方法，其中，所述显示装置包括控制模块、源极驱动模块和显示面板，所述方法包括：
    接收到驱动信号时，检测所述驱动信号是否为变频信号，所述驱动信号用于对所述显示面板进行驱动；
    若所述驱动信号为恒频信号，则将所述控制模块输出的时钟信号输出至所述源极驱动模块；
    若所述驱动信号为变频信号，则按照预设展频比率，对所述时钟信号进行展频操作；
    将展频后的所述时钟信号输出至所述源极驱动模块。
  20. 如权利要求19所述的显示装置的驱动方法，其中，所述控制模块与所述源极驱动模块连接，所述源极驱动模块与所述显示面板连接，所述控制模块为屏驱动板，所述源极驱动模块为薄膜源极驱动芯片，所述显示面板为薄膜晶体管液晶显示面板、有机电激光显示面板或量子点发光二极管显示面板中的任一种。
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