WO2016119357A1 - 一种goa电路及其驱动方法、显示面板及显示装置 - Google Patents

一种goa电路及其驱动方法、显示面板及显示装置 Download PDF

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Publication number
WO2016119357A1
WO2016119357A1 PCT/CN2015/080582 CN2015080582W WO2016119357A1 WO 2016119357 A1 WO2016119357 A1 WO 2016119357A1 CN 2015080582 W CN2015080582 W CN 2015080582W WO 2016119357 A1 WO2016119357 A1 WO 2016119357A1
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Prior art keywords
goa
unit
goa unit
transistor
pull
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PCT/CN2015/080582
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English (en)
French (fr)
Inventor
宋松
永山和由
郑灿
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京东方科技集团股份有限公司
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Priority to US14/906,496 priority Critical patent/US20160372078A1/en
Publication of WO2016119357A1 publication Critical patent/WO2016119357A1/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
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces
    • 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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/14—Display of multiple viewports
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0404—Matrix technologies
    • G09G2300/0408—Integration of the drivers onto the display substrate
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
    • 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
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/02—Flexible displays

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a GOA circuit and a driving method thereof, a display panel, and a display device.
  • GOA Gate Driver on Array
  • the TFT (Thin Film Transistor) gate switching circuit is integrated on the array substrate of the display panel by using the GOA technology to form a scan driving of the display panel, thereby eliminating the gate driving integrated circuit portion, which can not only
  • the cost of the product is reduced in terms of material cost and manufacturing process, and the display panel can achieve an aesthetic design of two-sided symmetry and a narrow bezel.
  • Such a gate switching circuit integrated on an array substrate using GOA technology is also referred to as a GOA circuit or a shift register circuit.
  • the existing GOA circuit is difficult to perform intelligent control according to the actual display requirements, especially for the foldable flexible display device, when the display panel is in the folded state, the effective display area is reduced, and the existing GOA circuit still will be in the display panel.
  • Each gate line is progressively scanned, which greatly increases the power consumption of the display device.
  • an embodiment of the present invention provides a GOA circuit, a driving method thereof, a display panel, and a display device.
  • the GOA circuit may include a plurality of GOA unit groups arranged in series with each other, and each of the GOA unit groups may include at least one level of GOA units arranged in series with each other.
  • the GOA circuit may further include a control unit; the control unit is coupled to the first level GOA unit in each of the GOA unit groups for directing the first in the first GOA unit group in the display area Level GOA Meta input frame start signal.
  • the search GOA circuit driving method may include: controlling the module to the first stage GOA unit in the first GOA unit group Inputting a frame start signal; when at least one of the GOA unit groups is in a non-display state, the control module inputs a frame start to the first level GOA unit in the first GOA unit group in the display area Signal, the GOA unit located in the non-display area has no frame start signal input.
  • a display panel can include a GOA circuit as described above.
  • a display device which may include a display panel as described above.
  • the GOA circuit includes a plurality of GOA unit groups arranged in series with each other, and each GOA unit group includes at least one level of GOA units arranged in series with each other, and the control unit Connected to the first stage GOA unit in each GOA unit group.
  • the control unit can cause the display panel by inputting an STV signal to the first-level GOA unit in the first GOA unit group corresponding to the display area to be displayed. Scanning is initiated by the stage GOA unit, particularly for flexible foldable display panels, such a GOA circuit can cause the folded portion of the non-display GOA unit group to be in a closed state, thereby effectively reducing power consumption of the display device product.
  • FIG. 1 is a schematic structural diagram of a GOA circuit according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a tail end of a gate line in a GOA circuit according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of circuit connection of a GOA circuit according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram showing a circuit connection of a gate line end structure in a GOA circuit corresponding to FIG. 3;
  • FIG. 5 is a timing diagram of a control signal of a GOA circuit according to an embodiment of the present disclosure
  • FIG. 6 is a timing diagram of another GOA circuit control signal according to an embodiment of the present disclosure.
  • FIG. 7 is a timing diagram of still another GOA circuit control signal provided by an embodiment of the present disclosure.
  • FIG. 8 is a schematic circuit diagram of another GOA circuit according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram showing a circuit connection of a gate line end structure in a GOA circuit provided corresponding to FIG. 8;
  • FIG. 10 is a schematic diagram of circuit connection of another GOA circuit according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic circuit diagram of another GOA circuit according to an embodiment of the present disclosure.
  • Figure 12 is a comparison diagram of input and output signals of the encoder shown in Figure 11;
  • FIG. 13 is a schematic flowchart of a method for driving a GOA circuit according to an embodiment of the present disclosure.
  • the GOA circuit comprises a plurality of GOA unit groups 1 arranged in series with each other, each GOA unit group 1 comprising at least one stage of a GOA unit 2 arranged in series with each other, wherein the GOA circuit further comprises a control unit 3.
  • the control unit 3 is connected to the first stage GOA unit in each GOA unit group 1 for inputting a frame start signal STV to the first stage GOA unit in the first GOA unit group in the display area.
  • the GOA circuit includes a plurality of GOA unit groups arranged in series with each other, each GOA unit group including at least one level of GOA units arranged in series with each other, and the control unit and the first stage GOA unit in each GOA unit group Connected.
  • the control unit can cause the display panel by inputting an STV signal to the first-level GOA unit in the first GOA unit group corresponding to the display area to be displayed. Scanning is initiated by the stage GOA unit, particularly for flexible foldable display panels, such a GOA circuit can cause the folded portion of the non-display GOA unit group to be in a closed state, thereby effectively reducing power consumption of the display device product.
  • each GOA unit group may be referred to as a first-level GOA unit group in the GOA circuit, and is located in a plurality of GOA unit groups connected in series.
  • the first GOA unit group is the first level GOA unit group.
  • the first GOA unit in the GOA unit in series with each other in each GOA unit group may be referred to as a first level GOA unit.
  • the GOA circuit may further include a first pull-down unit 4.
  • the first pull-down unit 4 is respectively connected to the tail ends of the plurality of gate lines for pulling down the potential of the gate line located in the non-display area to a low potential under the control of the pull-down control signal.
  • each gate line is usually connected to the GOA unit, and the GOA unit is used to input a row scan signal to the gate line, and the row scan signal input to each row of the gate line is used as the start signal of the next row of GOA.
  • the first pull-down unit 4 may be disposed at the tail end of the gate line, thereby further lowering the voltage of the gate line of the area to prevent each GOA unit from being Interference, further reducing power consumption.
  • a portion of the display area is always in a display state, and the trailing ends of the respective gate lines located in the area may not need to be connected to the first pull-down unit.
  • control unit 3 includes at least one first transistor T1.
  • the gate of the first transistor T1 is connected to the control signal, and the first pole inputs the frame start signal STV, and the second pole is connected to the first stage GOA unit in each GOA unit group.
  • a flexible flexible substrate is exemplified, wherein the flexible substrate can be folded into three equal parts, and the GOA unit of the 1-300th row, the GOA unit of the 301-600th row, and the 601-900th row
  • the GOA units act as three GOA unit groups, respectively.
  • the gates of the three first transistors T1 are respectively connected to the control signals A, B, and C, and the first poles are respectively input with the frame start signal STV, and the second poles are respectively connected to the first row and the first row.
  • the display panel may include more or less GOA unit groups than those shown in FIG. 3, and the number of GOA units in each GOA unit group may be different. .
  • the first pull-down unit 4 includes at least one second transistor T2.
  • the gate of the second transistor T2 is connected to the pull-down control signal, and the first pole is connected to the tail end of each gate line, and the second pole is connected to the low level VGL.
  • the second transistor T2 corresponding to the GOA unit in each GOA unit group and the second transistor T2 corresponding to the last stage GOA unit in the previous GOA unit group adjacent to the GOA unit group are connected with the same pull-down control signal.
  • the flexible flexible substrate is also taken as an example.
  • the gates of the second transistor T2 corresponding to the gate lines of the 1-129th row are both The pull-down control signal D is connected, and the gate of the second transistor T2 corresponding to the gate line of the 300-599th row is connected to the pull-down control signal E. Since the 600th-900th line is always in the display state, it is not necessary to connect the second transistor T2. Such a connection method is matched with Figure 3 The control unit shown, since in the GOA circuit shown in FIG.
  • each of the first transistors T1 inputs a frame start signal to the first stage GOA unit in a GOA unit group
  • the frame start signal is also As the output signal of the upper-level GOA unit, therefore, the GOA unit (except the last-level GOA unit) in each GOA unit group has the same last-level GOA unit in the previous GOA unit group adjacent to the GOA unit group.
  • the switching state, so the pull-down of the gate line potential can be realized by the first pull-down unit shown in FIG.
  • the timing of the control signals of the GOA circuit shown in FIG. 3 and FIG. 4 can be as shown in FIG. 5-7.
  • the timing of the control signal is as shown in FIG. 5, wherein the control signal A controls the transistor T1 to turn on the first row of the GOA unit in cycles.
  • the first to third rows of the flexible display panel are folded, the first to third rows are in a non-display state, and the timing of the control signal at this time can be as shown in FIG. 6, and the control signal B controls the transistor T1 to turn on the 301th line in cycles.
  • the pull-down control signal D controls the transistor T2 to pull down the potential of the 1-129th gate line.
  • the 1-600th line of the flexible display panel When the 1-600th line of the flexible display panel is folded, the 1-600th line area is in the non-display state.
  • the timing of the control signal at this time can be as shown in FIG. 7, and the control signal C controls the transistor T1 to be turned on periodically.
  • the pull-down control signals D, E respectively control the transistor T2 to pull down the potential of the 1st line 9999 and the 300-599th gate line.
  • the screen refresh frequency can be correspondingly increased, that is, the refresh process is completed three times in the previous frame time, thereby increasing the refresh frequency to three. Times.
  • the above description is based on the example of 3, and it should be understood that for other n-division display panels, when the effective display area of the display panel is reduced to 1/n, the screen refresh rate can be increased accordingly. To increase the refresh rate to n times.
  • the GOA circuit further includes at least one third transistor T3.
  • the gate of the third transistor T3 is connected to the isolation control signal S, and the first pole is connected to the input end of the first stage GOA unit in one GOA unit group, and the second pole is connected to the previous GOA adjacent to the GOA unit group.
  • the output of the last stage GOA unit in the unit group is connected to the isolation control signal S, and the first pole is connected to the input end of the first stage GOA unit in one GOA unit group, and the second pole is connected to the previous GOA adjacent to the GOA unit group.
  • the folding flexible substrate is also taken as an example.
  • the third transistor T3 may be disposed between the 300th and 301rd GOA units and the 600th and 601th GOA units, respectively. In this way, when the first transistor T1 inputs a frame start signal to the first stage GOA unit in the GOA unit group, the third transistor T3 can enable the first stage GOA unit and the last level in the previous GOA unit group. The GOA unit is disconnected, thereby avoiding the frame start signal as the output of the last stage GOA unit in the previous GOA unit group.
  • the first pull-down unit further includes at least one second transistor T2.
  • the gate of the second transistor T2 is connected to the pull-down control signal, and the first pole is connected to the tail end of each gate line, and the second pole is connected to the low level VGL.
  • the second transistor T2 corresponding to the GOA unit in each GOA cell group is connected to the same pull-down control signal.
  • the GOA unit in one GOA unit group can be correspondingly The gate-connected transistor T2 is connected to the same pull-down control signal. Further, since the 601st-900th row is always in the display state, it is not necessary to connect the second transistor T2.
  • control signal timings of the GOA circuits shown in FIG. 8 and FIG. 9 can also be referred to FIG. 5 to FIG.
  • the isolation control signal S periodically controls the disconnection between the GOA unit of the 300th and 301th rows and the GOA unit of the 600th and 601th rows.
  • Other control signals are as described above and will not be described here.
  • the GOA circuit further includes a second pull-down unit 5.
  • the second pull-down unit 5 is connected to the input of the first-stage GOA unit in each GOA unit group for inputting the first-stage GOA unit in the GOA unit group of the non-display area under the control of the shutdown signal Pull down to low potential.
  • the second pull-down unit 5 includes at least one fourth transistor T4.
  • the gate of the fourth transistor T4 is connected to the off signal, and the first pole is connected to the low level VGL, and the second pole is connected to the input end of the first stage GOA unit in the GOA unit group.
  • a foldable flexible substrate is taken as an example.
  • a fourth transistor T4 is connected to the input end of the GOA unit of the first row for lowering the input terminal voltage of the GOA unit of the first row to the control of the turn-off signal A'.
  • VGL another fourth transistor T4 is connected to the input terminal of the 301st row GOA unit for pulling the input terminal voltage of the first row GOA unit to VGL under the control of the turn-off signal B'.
  • the transistors used in the present disclosure may each be a thin film transistor or a field effect transistor or other devices having the same characteristics. Since the source and the drain of the transistor used herein are symmetrical, the source and the drain are No difference. In the present disclosure, in order to distinguish the two poles of the transistor except the gate, one of the poles is referred to as a first pole and the other pole is referred to as a second pole. In addition, according to the characteristics of the transistor, the transistor can be divided into an N-type and a P-type, and the following examples are all N-type crystals. The tube is taken as an example.
  • the first pole may be the source of the N-type transistor, and the second pole may be the drain of the N-type transistor. It is conceivable that implementation using a P-type transistor is readily conceivable by those skilled in the art without creative efforts and is therefore within the scope of the present disclosure.
  • control unit 3 further includes an encoder.
  • the encoder provided by the present disclosure may have two inputs and three outputs, each of which is connected to a first stage GOA unit in one GOA unit group.
  • the input/output relationship of the encoder can be as shown in FIG. 12, and the level of the output signal can be referred to the foregoing embodiment.
  • FIG. 13 illustrates a flow chart of a GOA circuit driving method that can be applied to the GOA circuit as described above.
  • the control module inputs a frame start signal to the first stage GOA unit in the first GOA unit group.
  • the control module inputs a frame start signal to the first level GOA unit in the first GOA unit group in the display area, located in the non-display area.
  • the GOA unit has no frame start signal input.
  • the GOA circuit includes a plurality of GOA unit groups arranged in series with each other, each GOA unit group including at least one level of GOA units arranged in series with each other, the control unit and each GOA unit group
  • the first stage GOA units are connected.
  • the control unit can cause the display panel by inputting an STV signal to the first-level GOA unit in the first GOA unit group corresponding to the display area to be displayed. Scanning is initiated by the stage GOA unit, particularly for flexible foldable display panels, such a GOA circuit can cause the folded portion of the non-display GOA unit group to be in a closed state, thereby effectively reducing power consumption of the display device product.
  • the method further includes: in step 133, when at least one of the GOA unit groups is in a non-display state, the first pull-down unit pulls down a potential of a gate line located in the non-display area. To low potential.
  • step 134 when at least one of the GOA cell groups is in the non-display state, the second pull-down unit pulls down the input of the first-stage GOA cell located in the GOA cell group of the non-display region to a low potential.
  • the present disclosure also provides a display panel including the GOA circuit as described above.
  • the display panel provided by the present disclosure includes a GOA circuit including a plurality of GOA unit groups arranged in series with each other, each GOA unit group including at least one level of GOA units arranged in series with each other, and a control unit and each GOA unit group
  • the first stage GOA units are connected.
  • the control unit can cause the display panel by inputting an STV signal to the first-level GOA unit in the first GOA unit group corresponding to the display area to be displayed. Scanning is initiated by the stage GOA unit, particularly for flexible foldable display panels, such a GOA circuit can cause the folded portion of the non-display GOA unit group to be in a closed state, thereby effectively reducing power consumption of the display device product.
  • the present disclosure also provides a display device including the display panel as described above.
  • the display device may be: a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like, or any product or component having a display function.
  • the display device includes a display panel, which in turn includes a GOA circuit including a plurality of GOA unit groups arranged in series with each other, each GOA unit group including at least one level of GOA units arranged in series with each other, the control unit Connected to the first stage GOA unit in each GOA unit group.
  • the control unit can cause the display panel by inputting an STV signal to the first-level GOA unit in the first GOA unit group corresponding to the display area to be displayed. Scanning is initiated by the stage GOA unit, particularly for flexible foldable display panels, such a GOA circuit can cause the folded portion of the non-display GOA unit group to be in a closed state, thereby effectively reducing power consumption of the display device product.
  • a person skilled in the art can understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned above may be a read only memory, a magnetic disk or an optical disk or the like.

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

一种GOA电路及其驱动方法、显示面板及显示装置。所述GOA电路包括相互串联设置的多个GOA单元组（1），每个所述GOA单元组（1）包括至少一级相互串联设置的GOA单元（2），所述GOA电路还包括控制单元（3）；所述控制单元（3）与每一个所述GOA单元组（1）中的第一级GOA单元相连接，用于向显示区域内的第一个GOA单元组中的所述第一级GOA单元输入帧起始信号（STV）。该GOA电路能够有效降低显示装置产品的功耗。

Description

一种GOA电路及其驱动方法、显示面板及显示装置 技术领域
本发明涉及显示技术领域，特别涉及一种GOA电路及其驱动方法、显示面板及显示装置。
背景技术
随着显示技术的不断发展，人们不仅对显示产品的外观和质量有着苛刻的需求，而且对显示产品的价格和实用性也有着更高的关注。为满足用户的需求，在玻璃基板上集成扫描驱动电路或双边驱动电路等技术也就应运而生，这样一种技术不仅可以使显示产品的生产良率大大提高，同时显著降低了显示产品的价格，从而满足了用户对产品质量和价格的要求。其中一项非常重要的技术就是GOA(Gate Driver on Array，阵列基板行驱动)技术的量产化的实现。利用GOA技术将TFT(Thin Film Transistor，薄膜场效应晶体管)栅极开关电路集成在显示面板的阵列基板上以形成对显示面板的扫描驱动，从而可以省掉栅极驱动集成电路部分，其不仅可以从材料成本和制作工艺两方面降低产品成本，而且显示面板可以做到两边对称和窄边框的美观设计。这种利用GOA技术集成在阵列基板上的栅极开关电路也称为GOA电路或移位寄存器电路。
现有GOA电路难以根据实际显示的需要进行智能控制，特别是对于可折叠的柔性显示设备，当显示面板处于折叠状态时，有效显示区域减小，现有的GOA电路仍然会对显示面板内的每一条栅线进行逐行扫描，这将大大增加显示设备的功耗。
发明内容
为了减小显示设备的功耗，本发明实施例提供了一种GOA电路及其驱动方法、显示面板及显示装置。
根据本公开的一方面，提供了一种GOA电路，所述GOA电路可以包括相互串联设置的多个GOA单元组，每一个所述GOA单元组可以包括至少一级相互串联设置的GOA单元，所述GOA电路还可以包括控制单元；所述控制单元与每一个所述GOA单元组中的第一级GOA单元相连接，用于向显示区域内的第一个GOA单元组中的所述第一级GOA单 元输入帧起始信号。
根据本公开的另一方面，提供了一种GOA电路驱动方法，应用于如上所述的GOA电路，搜索GOA电路驱动方法可以包括：控制模块向第一个GOA单元组中的第一级GOA单元输入帧起始信号；当所述GOA单元组中的至少一个处于非显示状态时，所述控制模块向显示区域内的第一个GOA单元组中的所述第一级GOA单元输入帧起始信号，位于非显示区域的GOA单元无帧起始信号输入。
根据本公开的另一方面，提供了一种显示面板，其可以包括如上所述的GOA电路。
根据本公开的又一方面，提供了一种显示装置，其可以包括如上所述的显示面板。
在本公开提供的GOA电路及其驱动方法、显示面板及显示装置中，GOA电路包括相互串联设置的多个GOA单元组，每个GOA单元组包括至少一级相互串联设置的GOA单元，控制单元与每一个GOA单元组中的第一级GOA单元相连接。采用这样一种结构的GOA电路，当显示面板的部分区域无需显示时，控制单元通过向需要显示区域所对应的第一个GOA单元组中的第一级GOA单元输入STV信号，能够使得显示面板由该级GOA单元开始扫描，尤其是对于柔性可折叠显示面板，这样一种GOA电路可以使得折叠部分的非显示GOA单元组处于关闭状态，从而能够有效降低显示装置产品的功耗。
附图说明
为了更清楚地说明本公开中的技术方案，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，下面描述中的附图仅仅是本公开的一些实施例，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是本公开实施例提供的一种GOA电路的结构示意图；
图2是本公开实施例提供的一种GOA电路中的栅线尾端结构示意图；
图3是本公开实施例提供的一种GOA电路的电路连接示意图；
图4是对应图3设置的GOA电路中的栅线尾端结构电路连接示意图；
图5是本公开实施例提供的一种GOA电路控制信号时序示意图；
图6是本公开实施例提供的另一GOA电路控制信号时序示意图；
图7是本公开实施例提供的又一GOA电路控制信号时序示意图；
图8是本公开实施例提供的另一GOA电路的电路连接示意图；
图9是对应图8设置的GOA电路中的栅线尾端结构电路连接示意图；
图10是本公开实施例提供的另一GOA电路的电路连接示意图；
图11是本公开实施例提供的另一GOA电路的电路连接示意图；
图12是图11所示编码器的输入输出信号对照图；以及
图13是本公开实施例提供的一种GOA电路驱动方法的方法流程示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
如图1所示，GOA电路包括相互串联设置的多个GOA单元组1，每个GOA单元组1包括至少一级相互串联设置的GOA单元2，其中，GOA电路还包括控制单元3。
控制单元3与每一个GOA单元组1中的第一级GOA单元相连接，用于向显示区域内的第一个GOA单元组中的第一级GOA单元输入帧起始信号STV。
在该GOA电路中，GOA电路包括相互串联设置的多个GOA单元组，每个GOA单元组包括至少一级相互串联设置的GOA单元，控制单元与每一个GOA单元组中的第一级GOA单元相连接。采用这样一种结构的GOA电路，当显示面板的部分区域无需显示时，控制单元通过向需要显示区域所对应的第一个GOA单元组中的第一级GOA单元输入STV信号，能够使得显示面板由该级GOA单元开始扫描，尤其是对于柔性可折叠显示面板，这样一种GOA电路可以使得折叠部分的非显示GOA单元组处于关闭状态，从而能够有效降低显示装置产品的功耗。
需要说明的是，由于将GOA电路划分为多个相互串联的GOA单元组，可以将每一个GOA单元组称为该GOA电路中的一级GOA单元组，位于多个相互串联的GOA单元组中的第一个GOA单元组即为第一级GOA单元组。类似的，可以将每一个GOA单元组中相互串联的GOA单元中的第一个GOA单元称为第一级GOA单元。
进一步的，如图2所示，GOA电路还可以包括第一下拉单元4。
第一下拉单元4分别与多条栅线的尾端相连接，用于在下拉控制信号的控制下将位于非显示区域的栅线的电位下拉至低电位。
具体的，每一条栅线的首端通常与GOA单元相连接，GOA单元用于向栅线输入行扫描信号，输入每一行栅线的行扫描信号又将作为下一行GOA的起始信号。为了防止非显示区域内的栅线电位过高而对其他行产生影响，可以在栅线的尾端设置第一下拉单元4，从而进一步拉低该区域栅线的电压，防止各GOA单元之间的干扰，进一步降低功耗。
特别的，在可折叠的柔性基板中，通常部分显示区域始终处于显示状态，位于该区域内的各条栅线的尾端可以无需与第一下拉单元相连接。
如图3所示，控制单元3包括至少一个第一晶体管T1。
其中，第一晶体管T1的栅极连接控制信号，并且第一极输入帧起始信号STV，第二极连接每一个GOA单元组中的第一级GOA单元。
在图3中，以可折叠的柔性基板为例进行说明，其中该柔性基板能够进行三等分的折叠，以第1-300行GOA单元、第301-600行GOA单元以及第601-900行GOA单元分别作为三个GOA单元组。参照图3所示的GOA电路，三个第一晶体管T1的栅极分别连接控制信号A、B、C，并且第一极均输入帧起始信号STV，第二极分别连接第1行、第301行以及第601行的GOA单元。应当理解，以上也仅是举例说明，在实际应用的过程中，显示面板可以包括比图3中所示的更多或更少的GOA单元组，每个GOA单元组内GOA单元的数量可以不同。
如图4所示，第一下拉单元4包括至少一个第二晶体管T2。
其中，第二晶体管T2的栅极连接下拉控制信号，并且第一极连接每一条栅线的尾端，第二极与低电平VGL相连接。
每一个GOA单元组中的GOA单元所对应的第二晶体管T2与该GOA单元组相邻的上一个GOA单元组中的最后一级GOA单元所对应的第二晶体管T2连接相同的下拉控制信号。
对应于如图3所示的控制单元3结构，结合图4，同样以可折叠的柔性基板为例进行说明，其中，第1-299行栅线所对应的第二晶体管T2的栅极均与下拉控制信号D相连接，第300-599行栅线所对应的第二晶体管T2的栅极均与下拉控制信号E相连接。由于第600-900行始终处于显示状态，因此可以无需连接第二晶体管T2。这样一种连接方式配合图3所 示的控制单元，由于在图3所示的GOA电路中，每一个第一晶体管T1在向一个GOA单元组中的第一级GOA单元输入帧起始信号时，该帧起始信号同样也会作为上一级GOA单元的输出信号，因此每一个GOA单元组中的GOA单元(除最后一级GOA单元)与该GOA单元组相邻的上一个GOA单元组中的最后一级GOA单元具有相同的开关状态，因此可以采用图4所示的第一下拉单元实现栅线电位的下拉。
具体的，图3和图4所示的GOA电路的控制信号时序可以如图5-图7所示。当柔性显示面板未折叠时，控制信号时序如图5所示，其中控制信号A控制晶体管T1按周期开启第1行GOA单元。当柔性显示面板的第1-300行发生折叠时，第1-300行区域处于非显示状态，此时的控制信号时序可以如图6所示，控制信号B控制晶体管T1按周期开启第301行GOA单元，在第1-300行对应的扫描时间内，下拉控制信号D控制晶体管T2将第1-299行栅线的电位拉低。当柔性显示面板的第1-600行均发生折叠时，第1-600行区域处于非显示状态，此时的控制信号时序可以如图7所示，控制信号C控制晶体管T1按周期开启第601行GOA单元，在第1-600行对应的扫描时间内，下拉控制信号D、E分别控制晶体管T2将第1-299行以及第300-599行栅线的电位拉低。
特别的，当显示面板的有效显示区域减小到1/3的时候，可相应的将屏幕刷新频率提升，即在之前一帧的时间内，完成三次刷新过程，从而可以将刷新频率提升到三倍。当然以上是以3等分为例进行的说明，应当理解，对于其他n等分的显示面板，当显示面板的有效显示区域减小到1/n的时候，同样可相应的将屏幕刷新频率提升以提高到n倍的刷新率。
如图8所示，GOA电路还包括至少一个第三晶体管T3。
其中，第三晶体管T3的栅极连接隔离控制信号S，并且第一极连接一个GOA单元组中的第一级GOA单元的输入端，第二极连接与该GOA单元组相邻的上一个GOA单元组中的最后一级GOA单元的输出端。
如图8所示，同样以可折叠的柔性基板为例进行说明，可以分别在第300行与第301行GOA单元以及第600行与第601行GOA单元之间设置第三晶体管T3。这样一来，当第一晶体管T1向GOA单元组中的第一级GOA单元输入帧起始信号时，第三晶体管T3能够将该第一级GOA单元与上一GOA单元组中的最后一级GOA单元断开，从而避免了帧起始信号作为上一GOA单元组中的最后一级GOA单元的输出。
相应的，如图9所示，第一下拉单元还包括至少一个第二晶体管T2。
其中，第二晶体管T2的栅极连接下拉控制信号，并且第一极连接每一条栅线的尾端，第二极与低电平VGL相连接。
每一个GOA单元组中的GOA单元所对应的第二晶体管T2均连接相同的下拉控制信号。
对应图8所示的GOA电路，由于第300行与第301行GOA单元以及第600行与第601行GOA单元之间实现了有效的隔离，因此可以将一个GOA单元组中的GOA单元所对应的栅线连接的晶体管T2与相同的下拉控制信号相连接，此外，由于第601-900行始终处于显示状态，因此可以无需连接第二晶体管T2。
具体的，图8和图9所示的GOA电路的控制信号时序同样可以参照图5-图7所示。其中，隔离控制信号S周期性的控制第300行与第301行GOA单元以及第600行与第601行GOA单元之间断路。其他控制信号如前所述，此处不做赘述。
此外，如图10所示，GOA电路还包括第二下拉单元5。
第二下拉单元5与每一个GOA单元组中的第一级GOA单元的输入端相连接，用于在关闭信号的控制下将位于非显示区域的GOA单元组中的第一级GOA单元的输入端下拉至低电位。
具体的，如图10所示，第二下拉单元5包括至少一个第四晶体管T4。
其中，第四晶体管T4的栅极连接关闭信号，并且第一极与低电平VGL相连接，第二极连接GOA单元组中的第一级GOA单元的输入端。
同样以可折叠的柔性基板为例进行说明，一个第四晶体管T4连接第1行GOA单元的输入端，用于在关闭信号A’的控制下将第1行GOA单元的输入端电压拉低至VGL，另一个第四晶体管T4连接第301行GOA单元的输入端，用于在关闭信号B’的控制下将第1行GOA单元的输入端电压拉低至VGL。采用这样一种结构的第二下拉单元5的设计，能够进一步确保GOA单元被有效关闭，有效降低能耗。
需要说明的是，本公开中采用的晶体管均可以为薄膜晶体管或场效应管或其他特性相同的器件，由于这里采用的晶体管的源极、漏极是对称的，所以其源极、漏极是没有区别的。在本公开中，为区分晶体管除栅极之外的两极，将其中一极称为第一极，将另一极称为第二极。此外，按照晶体管的特性区分可以将晶体管分为N型和P型，以下实施例均以N型晶体 管为例进行说明，当采用N型晶体管时，第一极可以是该N型晶体管的源极，第二极则可以是该N型晶体管的漏极。可以想到的是，采用P型晶体管实现是本领域技术人员可在没有做出创造性劳动前提下轻易想到的，因此也是在本公开的范围内的。
如图11所示，控制单元3还包括编码器。以可折叠的柔性基板为例，本公开所提供的编码器可以具有2个输入端以及3个输出端，每一个输出端分别连接一个GOA单元组中的第一级GOA单元。其中，该编码器的输入输出关系可以如图12所示，输出信号的高低可以参照前述实施例。
图13图示了可以应用于如上所述的GOA电路的GOA电路驱动方法的流程图。在步骤131中，控制模块向第一个GOA单元组中的第一级GOA单元输入帧起始信号。在步骤132中，当GOA单元组中的至少一个处于非显示状态时，控制模块向显示区域内的第一个GOA单元组中的第一级GOA单元输入帧起始信号，位于非显示区域的GOA单元无帧起始信号输入。
在图13中所示的GOA电路驱动方法中，GOA电路包括相互串联设置的多个GOA单元组，每个GOA单元组包括至少一级相互串联设置的GOA单元，控制单元与每一个GOA单元组中的第一级GOA单元相连接。采用这样一种结构的GOA电路，当显示面板的部分区域无需显示时，控制单元通过向需要显示区域所对应的第一个GOA单元组中的第一级GOA单元输入STV信号，能够使得显示面板由该级GOA单元开始扫描，尤其是对于柔性可折叠显示面板，这样一种GOA电路可以使得折叠部分的非显示GOA单元组处于关闭状态，从而能够有效降低显示装置产品的功耗。
进一步的，如图13所示，所述方法还包括：在步骤133中，当GOA单元组中的至少一个处于非显示状态时，第一下拉单元将位于非显示区域的栅线的电位下拉至低电位。
在步骤134中，当GOA单元组中的至少一个处于非显示状态时，第二下拉单元将位于非显示区域的GOA单元组中的第一级GOA单元的输入端下拉至低电位。
如上所述的GOA电路驱动的具体方法步骤以及所涉及的信号时序已在前述实施例中做了详细的描述，此处不做赘述。
本公开还提供了一种显示面板，包括如上所述的GOA电路。
其中，GOA电路的结构已在前述实施例中已做了详细的描述，此处不做赘述。
本公开所提供的显示面板包括GOA电路，该GOA电路包括相互串联设置的多个GOA单元组，每个GOA单元组包括至少一级相互串联设置的GOA单元，控制单元与每一个GOA单元组中的第一级GOA单元相连接。采用这样一种结构的GOA电路，当显示面板的部分区域无需显示时，控制单元通过向需要显示区域所对应的第一个GOA单元组中的第一级GOA单元输入STV信号，能够使得显示面板由该级GOA单元开始扫描，尤其是对于柔性可折叠显示面板，这样一种GOA电路可以使得折叠部分的非显示GOA单元组处于关闭状态，从而能够有效降低显示装置产品的功耗。
本公开还提供了一种显示装置，包括如上所述的显示面板。
其中，所述显示装置可以为：液晶面板、电子纸、OLED面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
本公开提供的显示装置包括显示面板，该显示面板又包括GOA电路，该GOA电路包括相互串联设置的多个GOA单元组，每个GOA单元组包括至少一级相互串联设置的GOA单元，控制单元与每一个GOA单元组中的第一级GOA单元相连接。采用这样一种结构的GOA电路，当显示面板的部分区域无需显示时，控制单元通过向需要显示区域所对应的第一个GOA单元组中的第一级GOA单元输入STV信号，能够使得显示面板由该级GOA单元开始扫描，尤其是对于柔性可折叠显示面板，这样一种GOA电路可以使得折叠部分的非显示GOA单元组处于关闭状态，从而能够有效降低显示装置产品的功耗。
本领域普通技术人员可以理解到，实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器、磁盘或光盘等。
以上所述仅为本公开的实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的范围之内。

Claims (14)

  1. 一种GOA电路，所述GOA电路包括相互串联设置的多个GOA单元组，每个所述GOA单元组包括至少一级相互串联设置的GOA单元，其中，所述GOA电路还包括控制单元；
    所述控制单元与每一个所述GOA单元组中的第一级GOA单元相连接，用于向显示区域内的第一个GOA单元组中的所述第一级GOA单元输入帧起始信号。
  2. 根据权利要求1所述的GOA电路，其中，所述GOA电路还包括第一下拉单元；
    所述第一下拉单元分别与多条栅线的尾端相连接，用于在下拉控制信号的控制下将位于非显示区域的所述栅线的电位下拉至低电位。
  3. 根据权利要求2所述的GOA电路，其中，所述控制单元包括至少一个第一晶体管；
    所述第一晶体管的栅极连接控制信号，并且第一极输入帧起始信号，第二极连接每一个所述GOA单元组中的第一级GOA单元。
  4. 根据权利要求2所述的GOA电路，其中，所述第一下拉单元包括至少一个第二晶体管；
    所述第二晶体管的栅极连接下拉控制信号，并且第一极连接每一条栅线的尾端，第二极与低电平相连接；
    每一个所述GOA单元组中的GOA单元所对应的所述第二晶体管与所述GOA单元组相邻的上一个所述GOA单元组中的最后一级GOA单元所对应的所述第二晶体管连接相同的下拉控制信号。
  5. 根据权利要求3所述的GOA电路，其中，所述GOA电路还包括至少一个第三晶体管；
    所述第三晶体管的栅极连接隔离控制信号，并且第一极连接一个所述GOA单元组中的第一级GOA单元的输入端，第二极连接与所述GOA单元组相邻的上一个所述GOA单元组中的最后一级GOA单元的输出端。
  6. 根据权利要求5所述的GOA电路，其中，所述第一下拉单元包括至少一个第二晶体管；
    所述第二晶体管的栅极连接下拉控制信号，并且第一极连接每一条栅线的尾端，第二极与低电平相连接；
    每一个所述GOA单元组中的GOA单元所对应的所述第二晶体管均连接相同的下拉控制信号。
  7. 根据权利要求1或2所述的GOA电路，其中，所述GOA电路还包括第二下拉单元；
    所述第二下拉单元与每一个所述GOA单元组中的第一级GOA单元的输入端相连接，用于在关闭信号的控制下将位于非显示区域的所述GOA单元组中的第一级GOA单元的输入端下拉至低电位。
  8. 根据权利要求7所述的GOA电路，其中，所述第二下拉单元包括至少一个第四晶体管；
    所述第四晶体管的栅极连接关闭信号，并且第一极与低电平相连接，第二极连接GOA单元组中的第一级GOA单元的输入端。
  9. 根据权利要求1或2所述的GOA电路，其中，所述控制单元包括编码器。
  10. 一种GOA电路驱动方法，应用于如权利要求1-9任一所述的GOA电路，所述方法包括：
    控制模块向第一个GOA单元组中的第一级GOA单元输入帧起始信号；
    当所述GOA单元组中的至少一个处于非显示状态时，所述控制模块向显示区域内的第一个GOA单元组中的所述第一级GOA单元输入帧起始信号，位于非显示区域的GOA单元无帧起始信号输入。
  11. 根据权利要求10所述的GOA电路驱动方法，其中，所述方法还包括：
    当所述GOA单元组中的至少一个处于非显示状态时，第一下拉单元将位于非显示区域的栅线的电位下拉至低电位。
  12. 根据权利要求10所述的GOA电路驱动方法，其中，所述方法还包括：
    当所述GOA单元组中的至少一个处于非显示状态时，第二下拉单元将位于非显示区域的所述GOA单元组中的第一级GOA单元的输入端下拉至低电位。
  13. 一种显示面板，其中包括如权利要求1-9任一所述的GOA电路。
  14. 一种显示装置，其中包括如权利要求13所述的显示面板。
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