WO2022007185A1 - 发光电路的驱动方法及驱动装置 - Google Patents
发光电路的驱动方法及驱动装置 Download PDFInfo
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- WO2022007185A1 WO2022007185A1 PCT/CN2020/114722 CN2020114722W WO2022007185A1 WO 2022007185 A1 WO2022007185 A1 WO 2022007185A1 CN 2020114722 W CN2020114722 W CN 2020114722W WO 2022007185 A1 WO2022007185 A1 WO 2022007185A1
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- light
- switch circuit
- emitting
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- level signal
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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]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
Definitions
- the present application relates to the field of display, and in particular, to a driving method and a driving device of a light-emitting circuit.
- FIG. 1 is an equivalent schematic diagram of a light-emitting circuit commonly used at present
- FIG. 2 is a driving timing diagram.
- the inventor found that when the light-emitting driving circuit in FIG. 1 works according to the driving sequence shown in FIG. 2, there are the following problems: when the scan signal (scan) line and the data signal (date) line simultaneously provide a high level, the light-emitting device emits light, and the storage capacitor will Charge. However, when the scan signal (Scan) line and the data signal (date) line simultaneously provide a low level, the gate-source voltage difference of the transistor T2 will be smaller than its threshold voltage, so the transistor T2 is turned off.
- the storage capacitor stores charges, the gate-source voltage difference of the transistor T1 is greater than its threshold voltage, so the transistor T1 is still in the on state, so that the light-emitting device continues to emit light, so that when the data signal line provides a low-level data signal, It is hoped that the technical effect of turning off the light-emitting device cannot be achieved, which leads to the problem of abnormal display of the display panel and affects the display quality of the display panel.
- the present disclosure provides a driving method of a light-emitting circuit, the driving method comprising:
- a low-level signal is provided to the light-emitting device of the light-emitting circuit through the high-level signal line of the light-emitting circuit, so as to use the low-level signal to clear the off state the partial charge in the light-emitting device;
- a high-level signal is provided to the light-emitting device through the high-level signal line, so that the light-emitting device is in a light-emitting state.
- the present disclosure further provides a driving device for a light-emitting circuit, the driving device comprising:
- the level signal providing module is used to provide a low level signal to the light emitting device of the light emitting circuit through the high level signal line of the light emitting circuit before a preset time node in the display period of one frame of image, so as to use the The low-level signal clears part of the charges in the light-emitting device in the off state, and is used to provide a high-level signal to the light-emitting device through the high-level signal line after the preset time node, so that the The light-emitting device is in a light-emitting state.
- the high-level signal line of the light-emitting circuit can send the signal to the light-emitting circuit.
- the light-emitting device of the light-emitting circuit provides a low-level signal, so as to use the low-level signal to clear part of the charges in the light-emitting device that is in an off state, and since the voltage difference across the light-emitting device is zero, no current flows through the light-emitting device device, the light-emitting device is extinguished, and the display panel of the light-emitting device will not display abnormally.
- a high-level signal is provided to the light-emitting device through the high-level signal line. Since there is a voltage difference across the light-emitting device, the light-emitting device can be in a light-emitting state. The normal display of the display panel is ensured, and the display quality of the display panel is improved.
- FIG. 1 is an equivalent schematic diagram of a light-emitting circuit commonly used at present
- FIG. 2 is a schematic waveform diagram of a driving sequence of a light-emitting circuit commonly used at present;
- FIG. 3 is a schematic flowchart of a method for driving a light-emitting circuit in an embodiment of the present application
- FIG. 4 is a schematic structural diagram of a light-emitting circuit in an embodiment of the present application.
- FIG. 5 is a schematic waveform diagram of the driving timing of the light-emitting circuit according to an embodiment of the present application.
- the primary purpose of the present invention is to provide a driving method for a light-emitting circuit, so as to solve the problem that the existing light-emitting circuit operates according to the current driving sequence, which causes abnormal display when the light-emitting device needs to be extinguished.
- the driving method includes the following steps:
- a high-level data signal or a low-level data signal may be provided through a data signal line
- a high-level scan signal or a low-level scan signal may be provided through a scan signal line
- a ground voltage may be provided through a low-level signal line .
- both the scan signal and the data signal with a high level after the preset time node refer to pulse signals.
- the preset time node in the embodiment of the present application refers to the time node when the signal connected by the high-level signal line changes from the low level to the high level.
- the first pole of the first switch circuit U1 is connected to the high-level signal (VDD for short) line, and the first switch
- the second pole of the circuit U1 is connected to the low-level signal line VSS
- the light-emitting device D1 is connected to the first pole of the first switch circuit U1 and the high-level signal line, or the light-emitting device D1 connects the second pole of the first switch circuit U1 and the low-level signal (VSS for short) line
- the first pole of the second switch circuit U2 and the control pole of the first switch circuit U1 The second pole of the second switch circuit U2 is connected to the data signal (date) line, and the control pole of the second switch circuit U2 is connected to the scan signal line.
- the driving method further includes:
- a first data signal is provided to the control electrode of the first switch circuit U1 of the light-emitting circuit through the second switch circuit U2 of the light-emitting circuit, so that the high-level signal line transmits the first data signal to the control electrode of the first switch circuit U1 of the light-emitting circuit.
- the first switch circuit U1 is turned on; the first data signal may be a high-level signal.
- the step of providing the first data signal to the control electrode of the first switch circuit U1 through the second switch circuit U2 includes:
- a first scan signal is provided to the control electrode of the second switch circuit U2 through the scan signal line of the light-emitting circuit, so that the second switch circuit U2 is turned on;
- the second pole of the second switch circuit U2 provides a first data signal, so as to transmit the first data signal to the control pole of the first switch circuit U1 when the second switch circuit U2 is turned on.
- a data signal is used to make the first switch circuit U1 in a conducting state when the high-level signal line provides a low-level signal to the light-emitting device.
- the first scan signal may be a high level signal.
- the step of providing the second data signal to the control electrode of the first switch circuit U1 through the second switch circuit U2 after the preset time node includes:
- a second scan signal is provided to the control electrode of the second switch circuit U2 through the scan signal line, so that the first electrode of the second switch circuit U2 is connected to the second electrode of the second switch circuit U2.
- the second pole of the switch circuit U2 is turned on;
- a second data signal is provided to the second pole of the second switch circuit U2, so as to transmit the second data signal to the control pole of the first switch circuit U1 when the second switch circuit is turned on, so
- the data signal is used to make the first pole of the first switch circuit U1 and the second pole of the first switch circuit U1 in conduction when the high-level signal line provides the high-level signal to the light-emitting device. pass status.
- the second data signal may be a high level signal.
- the step of providing the second data signal to the control electrode of the first switch circuit U1 through the second switch circuit U2 includes:
- a second scan signal is provided to the control electrode of the second switch circuit U2 through the scan signal line, so that the second switch circuit U2 is turned on;
- the data signal is used to make the first switch circuit U1 in a conducting state when the high-level signal line provides a high-level signal to the light-emitting device.
- the second scan signal may be a high level signal.
- a high-level data signal can be provided twice through the data signal line of the light-emitting circuit, and a high-level data signal can be provided twice through the scan signal line of the light-emitting circuit in the display period of one frame of image.
- the flat scan signal may also provide three high-level data signals through the data signal lines and three high-level scan signals through the scan signal lines in the display period of one frame of image, which is not specifically limited here.
- the light emitting device D1 in the embodiment of the present application may be an LED, and may also be a Mini-LED or an OLED, which is not specifically limited here.
- Mini-Light emitting diode also known as “sub-millimeter light-emitting diode” refers to an LED with a grain size of about 100 microns, which is between traditional LED and Micro Light Emitting Diode (Micro Light Emitting Diode). emitting diode, Micro-LED).
- Mini-LED has the characteristics of high contrast ratio and high color rendering performance that can be compared with organic light emitting diode (OLED), and the cost is only about 60% of OLED.
- Mini-LED Compared with Micro-LED, OLED, Mini-LED The technical difficulty is lower, it is easier to achieve mass production, and the LCD backlight market can be developed in large quantities, and the product economy is better. Therefore, Mini-LED has become a hot spot for the development and layout of major panel manufacturers.
- a low-level signal can be provided to the light-emitting device of the light-emitting circuit through the high-level signal line of the light-emitting circuit, To use the low-level signal to clear some of the charges in the light-emitting device in the off state, and because the voltage difference across the light-emitting device is zero, there is no current flowing through the light-emitting device, the light-emitting device is extinguished, and the light-emitting device will not be caused.
- the display panel displays abnormally.
- a high-level signal is provided to the light-emitting device through the high-level signal line. Since there is a voltage difference across the light-emitting device, the light-emitting device can be in a light-emitting state. The normal display of the display panel is ensured, and the display quality of the display panel is improved.
- An embodiment of the present invention also provides a driving device for a light-emitting circuit, and the driving device includes:
- the level signal providing module is used to provide a low level signal to the light emitting device of the light emitting circuit through the high level signal line of the light emitting circuit before a preset time node in the display period of one frame of image, so as to use the The low-level signal clears part of the charges in the light-emitting device in the off state, and is used to provide a high-level signal to the light-emitting device through the high-level signal line after the preset time node, so that the The light-emitting device is in a light-emitting state.
- the first pole of the first switch circuit U1 is connected to the high-level signal (VDD for short) line, and the first The second pole of the switch circuit U1 is connected to the low-level signal line VSS, and the light-emitting device D1 is connected to the first pole of the first switch circuit U1 and the high-level signal line, or the light-emitting device D1
- the device D1 is connected to the second pole of the first switch circuit U1 and the low-level signal (referred to as VSS) line; the first pole of the second switch circuit U2 and the control of the first switch circuit U1
- the second pole of the second switch circuit U2 is connected to the data signal (date) line, and the control pole of the second switch circuit U2 is connected to the scan signal line.
- the first data signal may be a high level signal.
- the drive device also includes:
- the control module is configured to provide a first data signal to the control electrode of the first switch circuit U1 of the light-emitting circuit through the second switch circuit U2 of the light-emitting circuit before the preset time node, so as to be at the high
- the first switch circuit U1 is in a conducting state
- control module is further configured to provide a first scan signal to the control electrode of the second switch circuit U2 through the scan signal line of the light-emitting circuit before the preset time node, so as to
- the second switch circuit U2 is turned on, and used to provide the first data signal to the second pole of the second switch circuit U2, so as to turn on the first data signal when the second switch circuit U2 is turned on It is transmitted to the control electrode of the first switch circuit U1, and the first data signal is used to make the first switch circuit U1 in conduction when the high-level signal line provides a low-level signal to the light-emitting device. pass status.
- control module is further configured to provide a second data signal to the control electrode of the first switch circuit U1 through the second switch circuit U2 after the preset time node, so as to be at the high power level.
- the flat signal line provides the high-level signal to the light-emitting device, the first switch circuit U1 is turned on.
- control module is further configured to provide a second scan signal to the control electrode of the second switch circuit U2 through the scan signal line after the preset time node, so that the The second switch circuit U2 is turned on, and is used for providing a second data signal to the second pole of the second switch circuit U2, so as to transmit the second data signal to the second switch circuit U2 when the second switch circuit U2 is turned on.
- the control electrode of the first switch circuit U1 the data signal is used to make the first switch circuit U1 in a conducting state when the high-level signal line provides a high-level signal to the light-emitting device.
- the first switch circuit U1 is a first transistor T1
- the second switch circuit U2 is a second transistor T2
- the gate of the first transistor T1 is used as the control of the first switch circuit U1 pole
- the first pole is used as the first pole of the first switch circuit U1
- the second pole is used as the second pole of the second switch circuit U2
- the gate of the second transistor is used as the control pole of the second switch circuit U2
- the first pole is used as the second pole of the second switch circuit U2
- the pole is used as the first pole of the second switch circuit U2, and the second pole is used as the second pole of the second switch circuit U2.
- the first pole of the first transistor T1 is connected to the high-level signal line through the light-emitting device, wherein: the first pole of the first transistor T1 It is connected to the anode of the light-emitting device, and the cathode of the light-emitting device D1 is connected to the high-level signal line.
- the second electrode of the first transistor T1 is connected to the low-level signal line through the light-emitting device D1, wherein: the second electrode of the first transistor T1 is connected to the light-emitting device D1.
- the cathode is connected, and the anode of the light-emitting device D1 is connected to the low-level signal line.
- the light emitting device D1 in the embodiment of the present application may be an LED, and may also be a Mini-LED or an OLED, which is not specifically limited here.
- Mini-Light emitting diode also known as “sub-millimeter light-emitting diode” refers to an LED with a grain size of about 100 microns, which is between traditional LED and Micro Light Emitting Diode (Micro Light Emitting Diode). emitting diode, Micro-LED).
- Mini-LED has the characteristics of high contrast ratio and high color rendering performance that can be compared with organic light emitting diode (OLED), and the cost is only about 60% of OLED.
- Mini-LED Compared with Micro-LED, OLED, Mini-LED The technical difficulty is lower, it is easier to achieve mass production, and the LCD backlight market can be developed in large quantities, and the product economy is better. Therefore, Mini-LED has become a hot spot for the development and layout of major panel manufacturers.
- the first transistor T1 may be a metal-oxide-semiconductor field effect transistor (metal-oxide-semiconductor field effect transistor).
- Metal-oxide-semiconductor field effect transistor MOS field effect transistor
- Semiconductor field effect transistor, MESFET, MOS tube for short may also be a thin film transistor (Thin Film Transistor, TFT), which is not specifically limited here.
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Abstract
一种发光电路的驱动方法及驱动装置，驱动方法包括：在一帧图像的显示周期内的预设时间节点前，通过发光电路的高电平信号线向发光电路的发光器件（D1）提供低电平信号（VSS），以利用低电平信号（VSS）清除处于熄灭状态的发光器件（D1）中的部分电荷（301）；在预设时间节点后，通过高电平信号线向发光器件（D1）提供高电平信号（VDD），以使发光器件处于发光状态（302）。
Description
本申请涉及显示领域，特别涉及一种发光电路的驱动方法及驱动装置。
请参见图1和图2，图1为目前常用的发光电路的等效示意图，图2为其驱动时序图。发明人研究发现，图1的发光驱动电路按照图2的驱动时序工作时，存在以下问题：扫描信号（scan）线和数据信号（date）线同时提供高电平时，发光器件发光，存储电容会充电。然而，扫描信号（Scan）线和数据信号（date）线同时提供低电平时，晶体管T2的栅源电压差会小于其阈值电压，因此晶体管T2断开。而由于存储电容存储有电荷，使得晶体管T1栅源电压差大于其阈值电压，因此晶体管T1仍然处于接通状态，使得发光器件持续发光，从而出现原本在数据信号线提供低电平数据信号时，希望发光器件熄灭的技术效果无法实现，导致显示面板显示异常的问题，影响显示面板的显示品质。
由于现有的发光电路按照目前的驱动时序工作会导致发光器件需要熄灭时异常显示的问题。
本揭示提供一种发光电路的驱动方法，所述驱动方法包括：
在一帧图像的显示周期内的预设时间节点前，通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷；
在所述预设时间节点后，通过所述高电平信号线向所述发光器件提供高电平信号，以使所述发光器件处于发光状态。
本揭示另外提供一种发光电路的驱动装置，所述驱动装置包括：
电平信号提供模块，用于在一帧图像的显示周期内的预设时间节点前，通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷，并用于在所述预设时间节点后，通过所述高电平信号线向所述发光器件提供高电平信号，以使所述发光器件处于发光状态。
本申请实施例中发光电路的驱动方法及驱动装置，应用至现有发光电路时，在一帧图像的显示周期内的预设时间节点前，可通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷，且由于发光器件两端的电压差为零，因此没有电流流经发光器件，发光器件熄灭，不会导致发光器件显示面板显示异常。在所述预设时间节点后，通过所述高电平信号线向所述发光器件提供高电平信号，由于发光器件两端有电压差，因此可以使所述发光器件处于发光状态，这样也确保了显示面板正常显示，提升了显示面板的显示品质。
图1为目前常用的发光电路的等效示意图；
图2为目前常用的发光电路的驱动时序的波形示意图；
图3为本申请实施例中一个发光电路的驱动方法流程示意图；
图4为本申请一个实施例中的发光电路的结构示意图；
图5为本申请一个实施例中发光电路的驱动时序的波形示意图。
本发明的首要目的是提供一种发光电路的驱动方法，以解决现有的发光电路按照目前的驱动时序工作会导致发光器件需要熄灭时异常显示的问题。
下面将结合本发明实施例中的附图，对本发明所提供的各个示例性的实施例的技术方案进行清楚、完整地描述。在不冲突的情况下，下述各个实施例及其技术特征可以相互组合。
本发明提到的方向用语，例如上、下、顶、底、前、后、左、右、内、外、侧、周围、中央、水平、横向、垂直、纵向、轴向、径向、最上层或最下层等，仅是参考附图的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
如图3所示，该驱动方法包括以下步骤：
S301，在一帧图像的显示周期内的预设时间节点前，通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷。
本申请实施例中，可以通过数据信号线提供高电平数据信号或者低电平数据信号，通过扫描信号线提供高电平扫描信号或者低电平扫描信号，通过低电平信号线提供地电压。
需要说明的是，本申请实施例中关于预设时间节点后为高电平的扫描信号和高电平的数据信号均指的是脉冲信号。
需要说明的是，本申请实施例中的预设时间节点是指高电平信号线接入的信号由低电平变为高电平的时间节点。
在一个实施例中，如图4所示，为该发光电路的结构示意图，所述第一开关电路U1的第一极与所述高电平信号(简称VDD)线相连，所述第一开关电路U1的第二极与所述低电平信号线VSS相连，所述发光器件D1连接所述第一开关电路U1的所述第一极与所述高电平信号线，或所述发光器件D1连接所述第一开关电路U1的所述第二极与所述低电平信号(简称VSS)线；所述第二开关电路U2的第一极与所述第一开关电路U1的控制极相连，所述第二开关电路U2的第二极与所述数据信号(date)线相连，所述第二开关电路U2的控制极与所述扫描信号线相连。所述驱动方法还包括：
在所述预设时间节点前，通过所述发光电路的第二开关电路U2向所述发光电路的第一开关电路U1的控制极提供第一数据信号，以在所述高电平信号线向所述发光器件提供所述低电平信号时使得所述第一开关电路U1处于导通状态；第一数据信号可以是高电平信号。
进一步的，所述在所述预设时间节点前，通过所述第二开关电路U2向所述第一开关电路U1的控制极提供第一数据信号的步骤包括：
在所述预设时间节点前，通过所述发光电路的扫描信号线向所述第二开关电路U2的控制极提供第一扫描信号，以使得所述第二开关电路U2导通；向所述第二开关电路U2的第二极提供第一数据信号，以在所述第二开关电路U2导通时将所述第一数据信号传输至所述第一开关电路U1的控制极，所述第一数据信号用于在所述高电平信号线向所述发光器件提供低电平信号时使得所述第一开关电路U1处于导通状态。第一扫描信号可以是高电平信号。
S302，所述预设时间节点之后，通过所述高电平信号线向所述发光器件提供高电平信号，以使所述发光器件处于发光状态。
在一个实施例中，所述在所述预设时间节点后，通过所述第二开关电路U2向所述第一开关电路U1的控制极提供第二数据信号的步骤包括：
在所述预设时间节点后，通过所述扫描信号线向所述第二开关电路U2的控制极提供第二扫描信号，以使得所述第二开关电路U2的第一极与所述第二开关电路U2的第二极导通；
向所述第二开关电路U2的第二极提供第二数据信号，以在所述第二开关电路导通时将所述第二数据信号传输至所述第一开关电路U1的控制极，所述数据信号用于在所述高电平信号线向所述发光器件提供高电平信号时使得所述第一开关电路U1的第一极与所述第一开关电路U1的第二极处于导通状态。第二数据信号可以高电平信号。
进一步地，所述在所述预设时间节点后，通过所述第二开关电路U2向所述第一开关电路U1的控制极提供第二数据信号的步骤包括：
在所述预设时间节点后，通过所述扫描信号线向所述第二开关电路U2的控制极提供第二扫描信号，以使得所述第二开关电路U2导通；
向所述第二开关电路U2的第二极提供第二数据信号，以在所述第二开关电路U2导通时将所述第二数据信号传输至所述第一开关电路U1的控制极，所述数据信号用于在所述高电平信号线向所述发光器件提供高电平信号时使得所述第一开关电路U1处于导通状态。第二扫描信号可以是高电平信号。
本申请实施例中，如图5所示，可以在一帧图像的显示周期内通过发光电路的数据信号线提供两次高电平数据信号，并通过发光电路的扫描信号线提供两次高电平扫描信号，也可以在一帧图像的显示周期内通过数据信号线提供三次高电平数据信号，并通过扫描信号线提供三次高电平扫描信号，具体此处不做限定。
需要说明的是，本申请实施例中的发光器件D1可以是LED，也可以是Mini-LED或者OLED，具体此处不做限定。迷你发光二极管（Mini-Light emitting diode, Mini-LED）又名“次毫米发光二极管”，意指晶粒尺寸约在100微米的LED，介于传统LED与微发光二极管（Micro Light
emitting diode, Micro-LED）之间。 Mini-LED具有高对比度、高显色性能等可与有机发光半导体（Organic Light emitting diode, OLED）相媲美的特点，成本仅为OLED的六成左右，相比Micro-LED、OLED，Mini-LED技术难度更低，更容易实现量产，且可以大量开发液晶显示背光源市场，产品经济性更佳，因此Mini-LED成为各大面板厂商开发布局的热点。
本申请实施例中发光电路的驱动方法，在一帧图像的显示周期内的预设时间节点前，可通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷，且由于发光器件两端的电压差为零，因此没有电流流经发光器件，发光器件熄灭，不会导致发光器件显示面板显示异常。在所述预设时间节点后，通过所述高电平信号线向所述发光器件提供高电平信号，由于发光器件两端有电压差，因此可以使所述发光器件处于发光状态，这样也确保了显示面板正常显示，提升了显示面板的显示品质。
本发明实施例还提出一种发光电路的驱动装置，所述驱动装置包括：
电平信号提供模块，用于在一帧图像的显示周期内的预设时间节点前，通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷，并用于在所述预设时间节点后，通过所述高电平信号线向所述发光器件提供高电平信号，以使所述发光器件处于发光状态。
在其中一个实施例中，如图4所示，为该发光电路的结构示意图，所述第一开关电路U1的第一极与所述高电平信号(简称VDD)线相连，所述第一开关电路U1的第二极与所述低电平信号线VSS相连，所述发光器件D1连接所述第一开关电路U1的所述第一极与所述高电平信号线，或所述发光器件D1连接所述第一开关电路U1的所述第二极与所述低电平信号(简称VSS)线；所述第二开关电路U2的第一极与所述第一开关电路U1的控制极相连，所述第二开关电路U2的第二极与所述数据信号(date)线相连，所述第二开关电路U2的控制极与所述扫描信号线相连。第一数据信号可以是高电平信号。
所述驱动装置还包括：
控制模块，用于在所述预设时间节点前，通过所述发光电路的第二开关电路U2向所述发光电路的第一开关电路U1的控制极提供第一数据信号，以在所述高电平信号线向所述发光器件提供所述低电平信号时使得所述第一开关电路U1处于导通状态；
在其中一个实施例中，所述控制模块还用于在所述预设时间节点前，通过所述发光电路的扫描信号线向所述第二开关电路U2的控制极提供第一扫描信号，以使得所述第二开关电路U2导通，并用于向所述第二开关电路U2的第二极提供第一数据信号，以在所述第二开关电路U2导通时将所述第一数据信号传输至所述第一开关电路U1的控制极，所述第一数据信号用于在所述高电平信号线向所述发光器件提供低电平信号时使得所述第一开关电路U1处于导通状态。
进一步地，所述控制模块还用于在所述预设时间节点后，通过所述第二开关电路U2向所述第一开关电路U1的控制极提供第二数据信号，以在所述高电平信号线向所述发光器件提供所述高电平信号时使得所述第一开关电路U1处于导通状态。
在其中一个实施例中，所述控制模块还用于在所述预设时间节点后，通过所述扫描信号线向所述第二开关电路U2的控制极提供第二扫描信号，以使得所述第二开关电路U2导通，并用于向所述第二开关电路U2的第二极提供第二数据信号，以在所述第二开关电路U2导通时将所述第二数据信号传输至所述第一开关电路U1的控制极，所述数据信号用于在所述高电平信号线向所述发光器件提供高电平信号时使得所述第一开关电路U1处于导通状态。
具体地，如图4所示，所述第一开关电路U1为第一晶体管T1，所述第二开关电路U2为第二晶体管T2；第一晶体管T1的栅极作为第一开关电路U1的控制极，第一极作为第一开关电路U1的第一极，第二极作为第二开关电路U2的第二极；所述第二晶体管的栅极作为第二开关电路U2的控制极，第一极作为第二开关电路U2的第一极，第二极作为第二开关电路U2的第二极。
在其中一个实施例中，如图4所示，所述第一晶体管T1的第一极通过所述发光器件与所述高电平信号线相连，其中：所述第一晶体管T1的第一极与所述发光器件的阳极相连，所述发光器件D1的阴极与所述高电平信号线相连。
在另一个实施例，所述第一晶体管T1的第二极通过所述发光器件D1与所述低电平信号线相连，其中：所述第一晶体管T1的第二极与所述发光器件的阴极相连，所述发光器件D1的阳极与所述低电平信号线相连。
需要说明的是，本申请实施例中的发光器件D1可以是LED，也可以是Mini-LED或者OLED，具体此处不做限定。迷你发光二极管（Mini-Light emitting diode, Mini-LED）又名“次毫米发光二极管”，意指晶粒尺寸约在100微米的LED，介于传统LED与微发光二极管（Micro Light
emitting diode, Micro-LED）之间。 Mini-LED具有高对比度、高显色性能等可与有机发光半导体（Organic Light emitting diode, OLED）相媲美的特点，成本仅为OLED的六成左右，相比Micro-LED、OLED，Mini-LED技术难度更低，更容易实现量产，且可以大量开发液晶显示背光源市场，产品经济性更佳，因此Mini-LED成为各大面板厂商开发布局的热点。
此外，第一晶体管T1可以是金属氧化物半导体场效应晶体管（metal
semiconductor field effect transistor, MESFET，简称MOS管），也可以是薄膜晶体管（Thin Film Transistor，TFT），具体此处不做限定。
尽管已经相对于一个或多个实现方式示出并描述了本发明，但是本领域技术人员基于对本说明书和附图的阅读和理解将会想到等价变型和修改。本发明包括所有这样的修改和变型，并且仅由所附权利要求的范围限制。特别地关于由上述组件执行的各种功能，用于描述这样的组件的术语旨在对应于执行所述组件的指定功能（例如其在功能上是等价的）的任意组件（除非另外指示），即使在结构上与执行本文所示的本说明书的示范性实现方式中的功能的公开结构不等同。此外，尽管本说明书的特定特征已经相对于若干实现方式中的仅一个被公开，但是这种特征可以与如可以对给定或特定应用而言是期望和有利的其他实现方式的一个或多个其他特征组合。而且，就术语“包括”、“具有”、“含有”或其变形被用在具体实施方式或权利要求中而言，这样的术语旨在以与术语“包含”相似的方式包括。进一步地，应当理解的是，在本文中提及的“多个”是指两个或两个以上。对于本文中提及的步骤，其通过数字后缀仅仅是为了清晰表述实施例，便于理解，并不完全代表步骤执行的先后顺序，应当以逻辑关系的先后设定为思考。
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 (16)
- 一种发光电路的驱动方法，其中所述驱动方法包括：在一帧图像的显示周期内的预设时间节点前，通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷；在所述预设时间节点后，通过所述高电平信号线向所述发光器件提供高电平信号，以使所述发光器件处于发光状态。
- 根据权利要求1所述的发光电路的驱动方法，其中所述驱动方法还包括：在所述预设时间节点前，通过所述发光电路的第二开关电路向所述发光电路的第一开关电路的控制极提供第一数据信号，以在所述高电平信号线向所述发光器件提供所述低电平信号时使得所述第一开关电路处于导通状态；其中，所述第一开关电路的第一极与所述高电平信号线相连，所述第一开关电路的第二极与所述低电平信号线相连，所述发光器件连接所述第一开关电路的所述第一极与所述高电平信号线，或所述发光器件连接所述第一开关电路的所述第二极与所述低电平信号线；所述第二开关电路的第一极与所述第一开关电路的控制极相连，所述第二开关电路的第二极与所述数据信号线相连，所述第二开关电路的控制极与所述扫描信号线相连。
- 根据权利要求2所述的发光电路的驱动方法，其中所述在所述预设时间节点前，通过所述第二开关电路向所述第一开关电路的控制极提供第一数据信号的步骤包括：在所述预设时间节点前，通过所述发光电路的扫描信号线向所述第二开关电路的控制极提供第一扫描信号，以使得所述第二开关电路导通；向所述第二开关电路的第二极提供第一数据信号，以在所述第二开关电路导通时将所述第一数据信号传输至所述第一开关电路的控制极，所述第一数据信号用于在所述高电平信号线向所述发光器件提供低电平信号时使得所述第一开关电路处于导通状态。
- 根据权利要求2所述的发光电路的驱动方法，其中所述驱动方法还包括：在所述预设时间节点后，通过所述第二开关电路向所述第一开关电路的控制极提供第二数据信号，以在所述高电平信号线向所述发光器件提供所述高电平信号时使得所述第一开关电路处于导通状态。
- 根据权利要求4所述的发光电路的驱动方法，其中所述在所述预设时间节点后，通过所述第二开关电路向所述第一开关电路的控制极提供第二数据信号的步骤包括：在所述预设时间节点后，通过所述扫描信号线向所述第二开关电路的控制极提供第二扫描信号，以使得所述第二开关电路导通；向所述第二开关电路的第二极提供第二数据信号，以在所述第二开关电路导通时将所述第二数据信号传输至所述第一开关电路的控制极，所述数据信号用于在所述高电平信号线向所述发光器件提供高电平信号时使得所述第一开关电路处于导通状态。
- 根据权利要求4所述的发光电路的驱动方法，其中，所述第一数据信号和所述第二数据信号为高电平信号。
- 根据权利要求5所述的发光电路的驱动方法，其中，所述第一扫描信号和第二扫描信号为高电平信号。
- 根据权利要求2所述的发光电路的驱动方法，其中，所述发光器件为LED、Mini-LED或者OLED。
- 一种发光电路的驱动装置，其中所述驱动装置包括：电平信号提供模块，用于在一帧图像的显示周期内的预设时间节点前，通过发光电路的高电平信号线向所述发光电路的发光器件提供低电平信号，以利用所述低电平信号清除处于熄灭状态的所述发光器件中的部分电荷，并用于在所述预设时间节点后，通过所述高电平信号线向所述发光器件提供高电平信号，以使所述发光器件处于发光状态。
- 根据权利要求9所述的发光电路的驱动装置，其中所述驱动装置还包括：控制模块，用于在所述预设时间节点前，通过所述发光电路的第二开关电路向所述发光电路的第一开关电路的控制极提供第一数据信号，以在所述高电平信号线向所述发光器件提供所述低电平信号时使得所述第一开关电路处于导通状态；其中，所述第一开关电路的第一极与所述高电平信号线相连，所述第一开关电路的第二极与所述低电平信号线相连，所述发光器件连接所述第一开关电路的所述第一极与所述高电平信号线，或所述发光器件连接所述第一开关电路的所述第二极与所述低电平信号线；所述第二开关电路的第一极与所述第一开关电路的控制极相连，所述第二开关电路的第二极与所述数据信号线相连，所述第二开关电路的控制极与所述扫描信号线相连。
- 根据权利要求10所述的发光电路的驱动装置，其中所述控制模块还用于在所述预设时间节点前，通过所述发光电路的扫描信号线向所述第二开关电路的控制极提供第一扫描信号，以使得所述第二开关电路导通，并用于向所述第二开关电路的第二极提供第一数据信号，以在所述第二开关电路导通时将所述第一数据信号传输至所述第一开关电路的控制极，所述第一数据信号用于在所述高电平信号线向所述发光器件提供低电平信号时使得所述第一开关电路处于导通状态。
- 根据权利要求11所述的发光电路的驱动装置，其中所述控制模块还用于在所述预设时间节点后，通过所述第二开关电路向所述第一开关电路的控制极提供第二数据信号，以在所述高电平信号线向所述发光器件提供所述高电平信号时使得所述第一开关电路处于导通状态。
- 根据权利要求12所述的发光电路的驱动装置，其中所述控制模块还用于在所述预设时间节点后，通过所述扫描信号线向所述第二开关电路的控制极提供第二扫描信号，以使得所述第二开关电路导通，并用于向所述第二开关电路的第二极提供第二数据信号，以在所述第二开关电路导通时将所述第二数据信号传输至所述第一开关电路的控制极，所述数据信号用于在所述高电平信号线向所述发光器件提供高电平信号时使得所述第一开关电路处于导通状态。
- 根据权利要求10所述的发光电路的驱动装置，其中，所述发光器件为LED、Mini-LED或者OLED。
- 根据权利要求10所述的发光电路的驱动装置，其中，所述第一开关电路为第一晶体管，所述第二开关电路为第二晶体管；所述第一晶体管的栅极作为所述第一开关电路的控制极，第一极作为第一开关电路的第一极，第二极作为第二开关电路的第二极；所述第二晶体管的栅极作为第二开关电路的控制极，第一极作为第二开关电路的第一极，第二极作为第二开关电路的第二极。
- 根据权利要求15所述的发光电路的驱动装置，其中，所述第一晶体管的第一极与所述发光器件的阳极相连，所述发光器件的阴极与所述高电平信号线相连。
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