WO2020087577A1 - 显示驱动装置以及显示装置、显示模组 - Google Patents

显示驱动装置以及显示装置、显示模组 Download PDF

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Publication number
WO2020087577A1
WO2020087577A1 PCT/CN2018/115779 CN2018115779W WO2020087577A1 WO 2020087577 A1 WO2020087577 A1 WO 2020087577A1 CN 2018115779 W CN2018115779 W CN 2018115779W WO 2020087577 A1 WO2020087577 A1 WO 2020087577A1
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WO
WIPO (PCT)
Prior art keywords
signal
display
driving
drive
auxiliary control
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Application number
PCT/CN2018/115779
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English (en)
French (fr)
Inventor
黄笑宇
Original Assignee
惠科股份有限公司
重庆惠科金渝光电科技有限公司
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Application filed by 惠科股份有限公司, 重庆惠科金渝光电科技有限公司 filed Critical 惠科股份有限公司
Priority to US16/257,076 priority Critical patent/US20200143762A1/en
Publication of WO2020087577A1 publication Critical patent/WO2020087577A1/zh

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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
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers

Definitions

  • the present application relates to the field of display technology, in particular to a display driving device, a display device, and a display module.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display, thin film transistor liquid crystal display
  • the embodiments of the present application provide a display drive device, a display device, and a display module, so that the drive design of the drive controller can meet various types of drive chips.
  • An embodiment of the present application provides a display driving device, including:
  • the drive controller outputs drive control signals to drive and control the display pixels
  • the auxiliary control circuit is connected to the output end of the drive controller when the signal output of the drive controller is abnormal, and outputs an auxiliary control signal to drive and control the display pixels.
  • An embodiment of the present application further provides a display device including a display pixel, a first driving chip and a second driving chip that drive the display pixels to light up, and a driving control that drives the first driving chip and the second driving chip to work
  • the display device also includes:
  • the auxiliary control circuit is connected to the output end of the drive controller when the signal output of the drive controller driving the first drive chip and the second drive chip is abnormal, and outputs an auxiliary control signal to display pixels Perform drive control.
  • An embodiment of the present application also provides a display module, including:
  • At least one first driving chip electrically connected to the display pixels in the display area
  • At least one second driving chip electrically connected to the display pixels in the display area
  • the driving controller generates a driving control signal and correspondingly outputs to the first driving chip and / or the second driving chip to control the first driving chip and / or the second driving chip to generate a driving signal to drive the display
  • the pixels are lit;
  • the auxiliary control circuit is connected to the output end of the drive controller when the signal output of the drive controller is abnormal, and outputs an auxiliary control signal to control the first drive chip and / or the second drive chip to generate a drive signal.
  • the auxiliary control circuit is added, so that even if the drive controller has a design limitation, the control signal required by the drive chip can be output to drive different types of drive chips to generate the drive signal, thereby ensuring the display device Normal work, but also saves the cost of product rework.
  • FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a functional structure of a display driving device according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of the functional structure of a display driving device according to an embodiment of the present application when it is in a certain state;
  • FIG. 4 is a schematic diagram of the functional structure of a display driving device according to an embodiment of the present application when it is in another state;
  • FIG. 5 is a schematic diagram of the functional structure of a display driving device according to an embodiment of the present application when it is in a certain state;
  • FIG. 6 is a schematic diagram of the functional structure of a display driving device according to an embodiment of the present application when it is in another state;
  • FIG. 7 is a schematic diagram of a circuit structure of a display driving device according to an embodiment of the present application.
  • 8a and 8b are schematic diagrams of wiring connections when the signal output of the drive controller is abnormal in the drive device shown in FIG. 7;
  • FIG. 9 is a schematic diagram of line connections in the drive device shown in FIG. 7 when the drive controller signal output is normal.
  • first”, “second”, etc. are for descriptive purposes only, and cannot be understood as instructions or hints Its relative importance or implicitly indicates the number of technical features indicated.
  • the features defined with “first” and “second” may include at least one of the features either explicitly or implicitly.
  • the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of those skilled in the art to realize. When the combination of technical solutions contradicts or cannot be realized, it should be considered that the combination of such technical solutions does not exist , Nor within the scope of protection required by this application.
  • the embodiment of the present application is to solve the technical problem of the early design of the driving controller in the display device, which makes it difficult to meet the driving requirements of different types of driving chips in the later product production, and proposes a new driving scheme, namely An auxiliary control scheme is added so that even if the drive controller cannot meet the drive requirements due to the design, the drive controller can be replaced to give corresponding control signals to control the work of the drive chip.
  • FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present application.
  • the display device includes a substrate 10, at least one first driving chip 11, at least one second driving chip 12, and a driving controller 13. specifically,
  • a display area 101 and a non-display area 102 are formed on the substrate 10; wherein, the display area 101 includes a plurality of display pixels, and the plurality of display pixels may be arranged in a matrix structure of rows and columns, and of course is not limited to a matrix arrangement structure, but may also be other Arrangement.
  • the display area 101 is also formed with a signal line and a switching device that are arranged crosswise.
  • the signal line may specifically include a first signal line and a second signal line that are electrically connected to the switching device.
  • the display pixel will receive the second driving signal from the second signal line through the activated switching device and light up according to the second driving signal.
  • the above switching device may include but is not limited to TFT (Thin Film Transistor (thin film transistor), for example, can also include field effect transistors, transistors, etc.
  • the above-mentioned first signal line and second signal line may also be referred to as scan lines and data lines.
  • At least one first driving chip 11 is electrically connected to the signal line in the display area 101, for example, connected to the first signal line, and electrically connected to the display pixel through the first signal line.
  • the first driving chip 11 provides a first driving signal.
  • At least one second driving chip 12 is electrically connected to the signal line in the display area 101, for example, to the second signal line, and is electrically connected to the display pixel through the second signal line.
  • the second driving chip 12 provides a second driving signal.
  • the driving controller 13 is electrically connected to the first driving chip 11 and / or the second driving chip 12 and is configured to generate a driving control signal and correspondingly output to the first driving chip 11 and / or the second driving chip 12 to control
  • the first driving chip 11 and / or the second driving chip 12 generate driving signals.
  • the driving pixels provided by the first driving chip 11 and the second driving chip 12 drive the display pixels to light up.
  • the drive control signals provided by the drive controller 13 include, for example, a frame start pulse signal STV, a pulse signal TP, a clock signal CKV, an enable signal OE, and so on.
  • the enable signal OE is set to control the operation of the driver chip, but different driver chips judge the enable signal OE differently.
  • the driver chip A starts working when receiving a high-level signal
  • the driver chip B receives a low-voltage signal To start work.
  • the driving controller 13 cannot satisfy the driving of the two types of driving chips at the same time, thereby causing the display device to fail to be used normally.
  • FIG. 2 is a schematic diagram of a functional structure of a display driving device according to an embodiment of the present application.
  • the technical solution of the present application proposes a new type of display drive device.
  • the driving controller 13 controls the driving chip to output a driving signal, thereby realizing the driving control of the display pixels.
  • auxiliary control circuit 14 Since the auxiliary control circuit 14 is added, even if the drive controller 13 has design limitations, it can output the control signals required by the drive chip to drive different types of drive chips to generate drive signals, thereby ensuring the normal operation of the display device, and It also saves the cost of product rework.
  • the auxiliary control circuit 14 includes:
  • the supplementary signal source 141 generates a supplementary power signal
  • the conversion circuit 142 receives the supplementary power signal and converts the supplementary power signal into an auxiliary control signal.
  • the supplementary power signal generated by the supplemental signal source 141 includes, for example, a high voltage signal and / or a low voltage signal.
  • the conversion circuit 142 converts into an auxiliary control signal based on the supplementary power signal. If a high voltage signal is received, it is converted to a high level signal; if a low voltage signal is received, it is converted to a low voltage signal.
  • a logic signal that meets the drive requirements of the drive chip can be generated, thereby ensuring the normal operation of the display device. It should be noted that the above high voltage signal and low voltage signal indicate the relative relationship between the two, and do not indicate a specific voltage value.
  • the conversion circuit 142 receives a high voltage signal or a low voltage signal. That is, when the driving chip needs a low voltage signal, the conversion circuit 142 receives the low voltage signal and converts the low voltage signal into an auxiliary control signal of the low voltage signal; when the driving chip needs a high level signal, the conversion circuit 142 receives the high voltage A level signal and an auxiliary control signal that converts the high voltage signal to a high level signal.
  • the above-mentioned supplementary signal source may include a high-voltage signal source and a low-voltage signal source.
  • the high-voltage signal source is controlled to be connected to the conversion circuit 142; a high-level signal is needed when the driving chip At this time, the control low voltage signal source is connected to the conversion circuit 142.
  • the supplementary signal source may also be configured as a power supply circuit that can output a high voltage signal or a low voltage signal.
  • the conversion circuit 142 may include:
  • the first switch circuit 142a includes a first control terminal, a first input terminal, and a first output terminal, the first control terminal is electrically connected to the output terminal of the supplementary signal source 141, and the first input terminal is connected to the first An input signal source, the first output terminal is the output terminal of the auxiliary control circuit 14 and is configured to output the auxiliary control signal;
  • the second switch circuit 142b includes a second control terminal, a second input terminal, and a second output terminal, the second control terminal is electrically connected to the output terminal of the supplementary signal source 141, and the second input terminal is connected to the second As the input signal source, the second output terminal is the output terminal of the auxiliary control circuit 14 and is configured to output the auxiliary control signal.
  • one switch circuit receives the high voltage signal to start operation, and the other switch circuit receives the low voltage signal to start operation. In this way, through the first switch circuit 142a and the second switch circuit 142b, whether the high voltage signal or the low voltage signal is received, it can be converted into an auxiliary control signal, and the drive control of the display pixel is realized.
  • the first switching circuit 142a may include at least one first switching transistor, and the first switching transistor is a P-type tube, that is, a hole-type semiconductor tube.
  • the gate of the first switching transistor receives a low voltage signal, it starts working, and when the gate receives a high signal, it stops working.
  • the second switching circuit 142b may include at least one second switching transistor, and the second switching transistor is an N-type transistor, that is, an electronic semiconductor tube.
  • the gate of the second switching transistor receives a high-level signal, it starts working, and when the gate receives a low-voltage signal, it stops working.
  • FIG. 3 is a schematic diagram of the functional structure of the display driving device according to an embodiment of the present application when it is in a certain state
  • FIG. 4 is a schematic diagram of the functional structure of the display driving device according to an embodiment of the present application when it is in another state
  • a first disconnect node 15 is provided between the output terminal of the auxiliary control circuit 14 and the output terminal of the drive controller 13. As shown in FIG. 3, when the drive controller 13 is abnormal, the first disconnection node 15 is connected.
  • the drive controller 13 does not output a signal due to an abnormal signal output, but the drive controller 13 does not output a signal, but communicates through the first disconnection node 15, and the output terminal of the auxiliary control circuit 14 outputs an auxiliary control signal for controlling the operation of the drive chip.
  • the control signal generated by the drive controller 13 controls the operation of the drive chip.
  • FIG. 5 is a schematic diagram of the functional structure of the display driving device according to an embodiment of the present application in a certain state
  • FIG. 6 is a schematic diagram of the functional structure of the display driving device according to an embodiment of the present application in another state .
  • a second disconnect node 16 is provided at the output end of the drive controller 13. As shown in FIG. 5, when the driving controller 13 is normal, the first disconnecting node 15 is disconnected, and the second disconnecting node 16 is connected. At this time, the control signal generated by the driving controller 13 controls the operation of the driving chip. As shown in FIG. 6, when the drive controller 13 is abnormal, the first disconnect node 15 is connected, and the second disconnect node 16 is disconnected.
  • the auxiliary control signal generated by the auxiliary control circuit 14 controls the operation of the drive chip. Therefore, through the setting of the second disconnection node 16, it is ensured that the drive controller 13 does not output a control signal when abnormal, and the auxiliary control circuit 14 controls the operation of the drive chip.
  • the above-mentioned setting of the first disconnecting node 15 and the second disconnecting node 16 may be implemented by means of a reserved position of the device.
  • the node position can be reserved and is in a disconnected state.
  • a device can be placed at the reserved position, and the disconnected node is connected, such as a resistor.
  • the device is not placed in the reserved position, and the disconnected node is in a disconnected state.
  • the control scheme can also be set, that is, when the drive controller is abnormal, the auxiliary control circuit 14 outputs an auxiliary control signal to control the operation of the driving chip; when the drive controller 13 is normal, the auxiliary control circuit 14 does not The auxiliary control signal is output, and the drive controller 13 outputs the drive control signal to control the drive chip to work.
  • a functional device similar to a double-gate switch is provided. When the driving controller is abnormal, the functional device is controlled to connect the input port of the driving chip to the auxiliary control signal; when the driving controller is normal, the functional device is controlled to drive The input port of the chip communicates with the drive controller.
  • FIG. 7 is a schematic diagram of a circuit structure of a display driving device according to an embodiment of the present application. Based on the above embodiments, the embodiments of the present application provide a specific circuit structure of a display driving device.
  • the auxiliary control circuit in the display driving device includes a high voltage power supply VDD1 and a low voltage power supply GND1, a first switching transistor M1, a second switching transistor M2, a first input power supply VDD2, a second input power supply GND2, a first disconnection node D1 The second off node D2, the first pad position B1, the second pad position B2.
  • the high-voltage power supply VDD1 is connected to one end of the first pad position B1, the other end of the first pad position B1 is connected to the gate of the first switching transistor M1, and the source of the first switching transistor M1 is connected to the first input power supply VDD2, The drain of the first switching transistor M1 is connected to one end of the first disconnection node D1.
  • the low voltage power supply GND1 is connected to one end of the second pad position B2, the other end of the second pad position B2 is connected to the gate of the second switching transistor M2, and the source of the second switching transistor M2 is connected to the second input power supply GND2, the second The drain of the switching transistor M2 is connected to one end of the first disconnection node D1.
  • the output end of the driving controller 13 is connected to one end of the second disconnection node D2, and the other end of the second disconnection node D2 is connected to the other end of the first disconnection node D1 and is connected to the signal input port of the driving chip.
  • FIGS. 8a and 8b are schematic diagrams of wiring connections when the drive controller signal output is abnormal in the display driving device shown in FIG.
  • the second disconnection node D2 is in an open state, and a first resistor R1 is placed on the first disconnection node D1, that is, the first disconnection node D1 is in a connected state.
  • the first pad position B1 and the second pad position B2 are communicated correspondingly. Specifically, as shown in FIG.
  • the driving controller 13 when the display driving device is operating, the driving controller 13 is controlled by the auxiliary control circuit 14 due to the abnormality of the driving controller 13, thereby ensuring the normal operation of the display device.
  • FIG. 9 is a schematic diagram of a line connection when the signal output of the drive controller 13 is normal in the display driving device in FIG. 7.
  • the driving controller 13 When the driving controller 13 is normal, the first pad position B1 and the second pad position B2 are in an open state, the first off node D1 is also in an open state, and a second resistor R2 is placed on the second off node D2.
  • the driving controller 13 controls the driving chip to work, thereby ensuring the normal operation of the display device.
  • the supplementary signal source 141 is located in the non-display area 102.
  • a circuit binding area 103 is also provided in the non-display area 102, and the supplementary signal source 141 is located in the circuit binding area 103.
  • the first pad position B1 and the second pad position B2 in the above-mentioned supplemental signal source 141 are located in the circuit bonding area 103.
  • the regional characteristics of the circuit bonding area 103 are utilized to make the processing at the first pad position B1 and the second pad position B2 in the supplementary signal source 141 easier to implement.
  • the conversion circuit 142 is also located in the non-display area 102.
  • the switching unit of the conversion circuit 142 is formed together with the switching device of the display area 101. This makes the manufacturing process of the conversion circuit 142 easier and simpler.

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Abstract

显示驱动装置、显示装置及显示模组，显示驱动装置包括：驱动控制器（13），输出驱动控制信号，对显示像素进行驱动控制；辅助控制电路（14），在驱动控制器（13）的信号输出异常时，与驱动控制器（13）的输出端连接，并输出辅助控制信号，来对显示像素进行驱动控制。

Description

显示驱动装置以及显示装置、显示模组
相关申请
本申请要求2018年11月1日申请的，申请号为201811299708.6，名称为“显示驱动装置以及显示装置、显示模组”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及显示技术领域，尤其涉及显示驱动装置以及显示装置、显示模组。
背景技术
这里的陈述仅提供与本申请有关的背景技术，而不必然地构成现有技术。
显示装置，例如TFT-LCD（Thin Film Transistor Liquid Crystal Display，薄膜晶体管液晶显示器 ），已经成为了现代IT、视讯产品中不可缺少的产品。
但是现有的显示装置在进行驱动显示时，由于驱动控制器的设计局限，使得后期产品生产时难以满足各种类型的驱动芯片的控制需求，从而造成产品无法正常使用，而且还增加了产品返工的成本。
发明内容
本申请实施例通过提供一种显示驱动装置、显示装置及显示模组，实现了驱动控制器的驱动设计能满足各种类型的驱动芯片。
本申请实施例提供了显示驱动装置，包括：
驱动控制器，输出驱动控制信号，对显示像素进行驱动控制；
辅助控制电路，在所述驱动控制器的信号输出异常时，与所述驱动控制器的输出端连接，并输出辅助控制信号，来对显示像素进行驱动控制。
本申请实施例还提供一种显示装置，包括显示像素、驱动所述显示像素点亮的第一驱动芯片和第二驱动芯片，以及驱动所述第一驱动芯片和第二驱动芯片工作的驱动控制器；所述显示装置还包括：
辅助控制电路，在所述驱动控制器驱动所述第一驱动芯片和第二驱动芯片工作的信号输出异常时，与所述驱动控制器的输出端连接，并输出辅助控制信号，来对显示像素进行驱动控制。
本申请实施例还提供一种显示模组，包括：
基板，该基板上形成有显示区，且所述显示区内包括多个显示像素；
至少一第一驱动芯片，与所述显示区内的显示像素电性连接；
至少一第二驱动芯片，与所述显示区内的显示像素电性连接；
驱动控制器，产生驱动控制信号，并对应输出至所述第一驱动芯片和/或第二驱动芯片，来控制所述第一驱动芯片和/或第二驱动芯片产生驱动信号，驱动所述显示像素点亮；
辅助控制电路，在所述驱动控制器的信号输出异常时，与所述驱动控制器的输出端连接，并输出辅助控制信号，来控制所述第一驱动芯片和/或第二驱动芯片产生驱动信号。
本申请技术方案中，由于增加了辅助控制电路，使得即使驱动控制器存在设计的局限，也能输出驱动芯片需要的控制信号，来驱动不同类的驱动芯片产生驱动信号，从而保证了显示装置的正常工作，而且还节省了产品返工的成本。
附图说明
图1是本申请一实施例的显示装置的结构示意图；
图2是本申请一实施例的显示驱动装置的功能结构示意图；
图3是本申请一实施例的显示驱动装置处于某一状态时的功能结构示意图；
图4是本申请一实施例的显示驱动装置处于另一状态时的功能结构示意图；
图5是本申请一实施例的显示驱动装置处于某一状态时的功能结构示意图；
图6是本申请一实施例的显示驱动装置处于另一状态时的功能结构示意图；
图7是本申请一实施例的显示驱动装置的电路结构示意图；
图8a和图8b是图7中显示驱动装置中，驱动控制器信号输出异常时的线路连接示意图；
图9是图7中显示驱动装置中，驱动控制器信号输出正常时的线路连接示意图。
具体实施方式
为了更好的理解上述技术方案，下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
需要说明，若本申请实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
本申请实施例为解决显示装置中，因驱动控制器的前期设计的局限，使得在后期产品生产时，难以满足不同类型的驱动芯片的驱动要求的技术问题，提出一种新型的驱动方案，即增加一辅助控制方案，使得即使驱动控制器因设计而造成无法满足驱动需求时，可以替代该驱动控制器给出相应的控制信号，来控制驱动芯片工作。
为方便本申请实施方案的理解，在描述本申请具体实施方案之前，先简单介绍一实施例结构的显示装置的驱动原理。
参照图1，图1是本申请一实施例的显示装置的结构示意图。该显示装置包括基板10、至少一第一驱动芯片11、至少一第二驱动芯片12以及驱动控制器13。具体地，
基板10上形成有显示区101和非显示区102；其中，显示区101内包括多个显示像素，该多个显示像素可呈行列分布的矩阵结构，当然不限于矩阵排列结构，也可以为其他排列方式。
可选地，该显示区101还形成有交叉设置的信号线路以及开关器件，信号线路具体可包括与开关器件电性连接的第一信号线和第二信号线，该开关器件设置为接收到第一信号线上的第一驱动信号时，启动开关器件，此时显示像素将通过启动的开关器件从第二信号线上接收第二驱动信号，并根据第二驱动信号点亮。具体地，上述开关器件可包括但不限于TFT（Thin Film Transistor，薄膜晶体管），例如还可包括场效应管、三极管等等。上述第一信号线和第二信号线还可称为扫描线和数据线。
至少一第一驱动芯片11，与显示区101内的信号线路电性连接，例如与第一信号线连接，通过第一信号线与显示像素电性连接。该第一驱动芯片11提供第一驱动信号。
至少一第二驱动芯片12，与显示区101内的信号线路电性连接，例如与第二信号线连接，通过第二信号线与显示像素电性连接。该第二驱动芯片12提供第二驱动信号。
驱动控制器13，与第一驱动芯片11和/或第二驱动芯片12电性连接，设置为产生驱动控制信号，并对应输出至第一驱动芯片11和/或第二驱动芯片12，来控制第一驱动芯片11和/或第二驱动芯片12产生驱动信号。通过第一驱动芯片11、第二驱动芯片12提供的驱动信号，来驱动显示像素点亮。
可选地，驱动控制器13提供的驱动控制信号例如包括：帧起始脉冲信号STV、脉冲信号TP、时钟信号CKV、使能信号OE等等。其中使能信号OE设置为控制驱动芯片工作，但是不同的驱动芯片对于使能信号OE的判断不同，例如驱动芯片A在接收到高电平信号时启动工作，驱动芯片B在接收到低电压信号时启动工作。而驱动控制器13无法同时满足该两类驱动芯片的驱动，从而造成显示装置无法正常使用。
对此，参照图2，图2是本申请一实施例的显示驱动装置的功能结构示意图。本申请技术方案提出了一种新型的显示驱动装置，通过增加一辅助控制电路14，在驱动控制器13信号输出异常时，与驱动控制器13的输出端连接，并输出辅助控制信号，以代替驱动控制器13来控制驱动芯片输出驱动信号，从而实现对显示像素的驱动控制。
由于增加了辅助控制电路14，使得即使驱动控制器13存在设计的局限，也能输出驱动芯片需要的控制信号，来驱动不同类的驱动芯片产生驱动信号，从而保证了显示装置的正常工作，而且还节省了产品返工的成本。
在本申请某一实施例中，上述辅助控制电路14包括：
补充信号源141，产生补充电源信号；
转换电路142，接收补充电源信号，并将该补充电源信号转换为辅助控制信号。
具体地，上述补充信号源141产生的补充电源信号例如包括高电压信号和/或低电压信号。转换电路142根据该补充电源信号，转换为辅助控制信号。若接收到高电压信号，则转换为高电平信号；若接收到低电压信号，则转换为低电压信号。通过补充信号源141和转换电路142，在驱动控制器13信号输出异常时，能产生满足驱动芯片的驱动需求的逻辑信号，从而保证显示装置的正常工作。需要说明的是，上述高电压信号和低电压信号，表示两者的相对关系，并不表示具体的电压值。上述辅助控制电路在工作时，转换电路142接收高电压信号或低电压信号。即，当驱动芯片需要低电压信号时，转换电路142接收低电压信号，并将低电压信号转换为低电压信号的辅助控制信号；当驱动芯片需要高电平信号时，转换电路142接收高电平信号，并将高电压信号转换为高电平信号的辅助控制信号。
可选地，上述补充信号源可以包括高电压信号源和低电压信号源，则在在驱动芯片需要低电压信号时，控制高电压信号源与转换电路142连接；在驱动芯片需要高电平信号时，控制低电压信号源与转换电路142连接。当然，其他实施例中，也可以补充信号源设置为既可以输出高电压信号，也可以输出低电压信号的电源电路。
在本申请某一实施例中，上述转换电路142可包括：
第一开关电路142a，包括第一控制端、第一输入端、第一输出端，所述第一控制端与所述补充信号源141的输出端电连接，所述第一输入端连接第一输入信号源，第一输出端为所述辅助控制电路14的输出端，设置为输出所述辅助控制信号；
第二开关电路142b，包括第二控制端、第二输入端、第二输出端，所述第二控制端与所述补充信号源141的输出端电连接，所述第二输入端连接第二输入信号源，第二输出端为所述辅助控制电路14的输出端，设置为输出所述辅助控制信号。
上述第一开关电路142a和第二开关电路142b中，一个开关电路接收到高电压信号才启动工作，另一开关电路接收到低电压信号才启动工作。如此，使得通过第一开关电路142a和第二开关电路142b，实现了无论接收到高电压信号还是低电压信号，均能转换为辅助控制信号，实现显示像素的驱动控制。
可选地，上述第一开关电路142a可包括至少一个第一开关晶体管，且该第一开关晶体管为P型管，即空穴型半导体管。该第一开关晶体管的栅极接收到低电压信号时，启动工作，当栅极接收到高电平信号时，停止工作。
上述第二开关电路142b可包括至少一个第二开关晶体管，且该第二开关晶体管为N型管，即电子型半导体管。该第二开关晶体管的栅极接收到高电平信号时，启动工作，当栅极接收到低电压信号时，停止工作。
参照图3和图4，图3是本申请一实施例的显示驱动装置处于某一状态时的功能结构示意图，图4是本申请一实施例的显示驱动装置处于另一状态时的功能结构示意图。在本申请的某一实施例中，上述辅助控制电路14的输出端与驱动控制器13的输出端之间设置一第一断开节点15。如图3所示，当驱动控制器13异常时，该第一断开节点15则连通。此时驱动控制器13由于信号输出异常，则驱动控制器13不输出信号，而通过第一断开节点15连通，辅助控制电路14的输出端输出辅助控制信号，用来控制驱动芯片工作。当然，如图4所示，当驱动控制器13正常时，该第一断开节点15则断开。此时由驱动控制器13产生的控制信号，来控制驱动芯片工作。
参照图5和图6，图5是本申请一实施例的显示驱动装置处于某一状态时的功能结构示意图，图6是本申请一实施例的显示驱动装置处于另一状态时的功能结构示意图。在本申请的某一实施例中，上述驱动控制器13的输出端设置一第二断开节点16。如图5所示，当驱动控制器13正常时，第一断开节点15断开，第二断开节点16连通，此时由驱动控制器13产生的控制信号来控制驱动芯片工作。如图6所示，当驱动控制器13异常时，第一断开节点15连通，第二断开节点16断开，此时由辅助控制电路14产生的辅助控制信号来控制驱动芯片工作。由此通过第二断开节点16的设置，保证了驱动控制器13异常时不输出控制信号，而由辅助控制电路14控制驱动芯片工作。
可选地，上述第一断开节点15和第二断开节点16的设置，可以通过器件预留位置的方式来实现。具体地，在形成显示驱动装置时，则可以将该节点位置预留出来，并处于断开状态。当该节点位置需要连通，则可以在该预留位置处放置一器件，则将该断开节点连通，该器件例如电阻等。当该节点位置断开时，则将该预留位置不放置器件，则将该断开节点处于断开状态。
当然，其他实施例中，也可以通过设置控制方案，即在驱动控制器异常时，由辅助控制电路14输出辅助控制信号，控制驱动芯片工作；在驱动控制器13正常时，辅助控制电路14不输出辅助控制信号，由驱动控制器13输出驱动控制信号，控制驱动芯片工作。具体地，例如设置一类似双闸开关的功能器件，在驱动控制器异常时，控制该功能器件将驱动芯片的输入端口与辅助控制信号连通；在驱动控制器正常时，控制该功能器件将驱动芯片的输入端口与驱动控制器连通。
参照图7，图7是本申请一实施例的显示驱动装置的电路结构示意图。基于上述实施例，本申请实施例提出一种显示驱动装置的具体电路结构。该显示驱动装置中辅助控制电路包括高电压电源VDD1和低电压电源GND1、第一开关晶体管M1、第二开关晶体管M2、第一输入电源VDD2，第二输入电源GND2、第一断开节点D1、第二断开节点D2、第一焊盘位置B1、第二焊盘位置B2。
其中，高电压电源VDD1连接第一焊盘位置B1的一端，第一焊盘位置B1的另一端连接第一开关晶体管M1的栅极，第一开关晶体管M1的源极连接第一输入电源VDD2，第一开关晶体管M1的漏极连接第一断开节点D1的一端。
低电压电源GND1连接第二焊盘位置B2的一端，第二焊盘位置B2的另一端连接第二开关晶体管M2的栅极，第二开关晶体管M2的源极连接第二输入电源GND2，第二开关晶体管M2的漏极连接第一断开节点D1的一端。
驱动控制器13的输出端连接第二断开节点D2的一端，第二断开节点D2的另一端与第一断开节点D1的另一端连接后，并与驱动芯片的信号输入端口连接。
参照图8a和图8b，图8a和图8b是图7中显示驱动装置中，驱动控制器信号输出异常时的线路连接示意图。当驱动控制器异常时，第二断开节点D2呈开路状态，第一断开节点D1上放置一第一电阻R1，即将第一断开节点D1处于连通状态。而且，根据驱动芯片所需要的控制信号，对应将第一焊盘位置B1、第二焊盘位置B2连通。具体地，如图8a所示，当驱动芯片所需要的控制信号为高电平信号时，将第一焊盘位置B1处进行焊接，将高电压电源VDD1与第一开关晶体管M1的栅极和第二开关晶体管M2的栅极均连通。如图8b所示，当驱动芯片所需要的控制信号为低电压信号时，将第二焊盘位置B2处进行焊接，将低电压电源GND2与第一开关晶体管M1的栅极和第二开关晶体管M2的栅极均连通。
基于上述线路结构，显示驱动装置工作时，由于驱动控制器13异常，则由辅助控制电路14控制驱动芯片工作，从而保证了显示装置的正常工作。
参照图9，图9是图7中显示驱动装置中，驱动控制器13信号输出正常时的线路连接示意图。当驱动控制器13正常时，第一焊盘位置B1和第二焊盘位置B2呈开路状态，第一断开节点D1也呈开路状态，第二断开节点D2上放置一第二电阻R2。基于该线路结构，显示驱动装置工作时，由于驱动控制器13正常，则由驱动控制器13控制驱动芯片工作，从而保证了显示装置的正常工作。
上述显示驱动装置中，补充信号源141位于非显示区102。可选地，非显示区102内还设置电路绑定区103，该补充信号源141位于电路绑定区103。具体地，上述补充信号源141中的第一焊盘位置B1和第二焊盘位置B2位于电路绑定区103中。通过如此结构设置，利用电路绑定区103的区域特性，使得该补充信号源141中第一焊盘位置B1和第二焊盘位置B2处的处理更容易实现。
上述显示驱动装置中，转换电路142也位于非显示区102。可选地，该转换电路142的开关单元与显示区101的开关器件一起形成。由此使得该转换电路142的制程更加容易、简单。
应当注意的是，在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的部件或步骤。位于部件之前的单词“一”或“一个”不排除存在多个这样的部件。本申请可以借助于包括有若干不同部件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。
尽管已描述了本申请的可选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括可选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (20)

  1. 一种显示驱动装置，其中，包括：
    驱动控制器，输出驱动控制信号，对显示像素进行驱动控制；
    辅助控制电路，在所述驱动控制器的信号输出异常时，与所述驱动控制器的输出端连接，并输出辅助控制信号，来对显示像素进行驱动控制。
  2. 如权利要求1所述的显示驱动装置，其中，所述辅助控制电路包括：
    补充信号源，产生补充电源信号；
    转换电路，接收所述补充电源信号，并将所述补充电源信号转换为所述辅助控制信号。
  3. 如权利要求2所述的显示驱动装置，其中，所述补充电源信号包括高电压信号和/或低电压信号。
  4. 如权利要求2所述的显示驱动装置，其中，所述补充信号源包括高电压信号源和低电压信号源。
  5. 如权利要求2所述的显示驱动装置，其中，所述转换电路包括：
    第一开关电路，包括第一控制端、第一输入端、第一输出端，所述第一控制端与所述补充信号源的输出端电连接，所述第一输入端连接第一输入信号源，第一输出端为所述辅助控制电路的输出端，用来输出所述辅助控制信号；
    第二开关电路，包括第二控制端、第二输入端、第二输出端，所述第二控制端与所述补充信号源的输出端电连接，所述第二输入端连接第二输入信号源，第二输出端为所述辅助控制电路的输出端，用来输出所述辅助控制信号。
  6. 如权利要求5所述的显示驱动装置，其中，所述第一开关电路包括至少一个第一开关晶体管，所述第二开关电路包括至少一个第二开关晶体管，且所述第一开关电路和第二开关电路中，一个开关电路接收到高电压信号启动工作，另一个开关电路接收到低电压信号启动工作。
  7. 如权利要求5所述的显示驱动装置，其中，所述第一开关电路包括至少一个空穴型半导体管，所述第二开关电路包括至少一个电子型半导体管。
  8. 如权利要求1所述的显示驱动装置，其中，所述辅助控制电路的输出端与驱动控制器的输出端之间设置第一断开节点，当驱动控制器信号输出异常时，该第一断开节点连通。
  9. 如权利要求8所述的显示驱动装置，其中，所述驱动控制器的输出端处还设置第二断开节点，当所述驱动控制器信号输出正常时，所述第二断开节点连通，所述第一断开节点断开。
  10. 如权利要求9所述的显示驱动装置，其中，所述第一断开节点和第二断开节点采用器件预留位置的方式进行设置。
  11. 如权利要求10所述的显示驱动装置，其中，所述第一断开节点和第二断开节点上放置电阻时，第一断开节点和第二断开节点连通。
  12. 一种显示装置，其中，包括显示像素、驱动所述显示像素点亮的至少一第一驱动芯片和至少一第二驱动芯片，以及驱动所述第一驱动芯片和第二驱动芯片工作的驱动控制器；所述显示装置还包括：
    辅助控制电路，在所述驱动控制器驱动所述第一驱动芯片和第二驱动芯片工作的信号输出异常时，与所述驱动控制器的输出端连接，并输出辅助控制信号，来对显示像素进行驱动控制。
  13. 如权利要求12所述的显示装置，其中，所述辅助控制电路包括：
    补充信号源，产生补充电源信号；
    转换电路，接收所述补充电源信号，并将所述补充电源信号转换为所述辅助控制信号。
  14. 如权利要求13所述的显示装置，其中，所述转换电路包括：
    第一开关电路，包括第一控制端、第一输入端、第一输出端，所述第一控制端与所述补充信号源的输出端电连接，所述第一输入端连接第一输入信号源，第一输出端为所述辅助控制电路的输出端，用来输出所述辅助控制信号；
    第二开关电路，包括第二控制端、第二输入端、第二输出端，所述第二控制端与所述补充信号源的输出端电连接，所述第二输入端连接第二输入信号源，第二输出端为所述辅助控制电路的输出端，用来输出所述辅助控制信号。
  15. 如权利要求12所述的显示装置，其中，所述辅助控制电路的输出端与驱动控制器的输出端之间设置第一断开节点，当驱动控制器信号输出异常时，该第一断开节点连通。
  16. 如权利要求15所述的显示装置，其中，所述驱动控制器的输出端处还设置第二断开节点，当所述驱动控制器信号输出正常时，所述第二断开节点连通，所述第一断开节点断开。
  17. 一种显示模组，其中，包括：
    基板，该基板上形成有显示区，且所述显示区内包括多个显示像素；
    至少一第一驱动芯片，与所述显示区内的显示像素电性连接；
    至少一第二驱动芯片，与所述显示区内的显示像素电性连接；
    驱动控制器，产生驱动控制信号，并对应输出至所述第一驱动芯片和/或第二驱动芯片，来控制所述第一驱动芯片和/或第二驱动芯片产生驱动信号，驱动所述显示像素点亮；
    辅助控制电路，在所述驱动控制器的信号输出异常时，与所述驱动控制器的输出端连接，并输出辅助控制信号，来控制所述第一驱动芯片和/或第二驱动芯片产生驱动信号。
  18. 如权利要求17所述的显示模组，其中，所述基板的显示区以外的区域为非显示区，所述第一驱动芯片和/或第二驱动信号位于所述非显示区。
  19. 如权利要求17所述的显示模组，其中，所述基板的显示区以外的区域为非显示区，所述辅助控制电路包括：
    补充信号源，位于所述非显示区的电路绑定区，产生补充电源信号；
    转换电路，位于所述非显示区，接收所述补充电源信号，并将所述补充电源信号转换为所述辅助控制信号。
  20. 如权利要求19所述的显示模组，其中，所述补充信号源包括高电压信号源和低电压信号源，所述电路绑定区根据所述第一驱动芯片或第二驱动芯片所需的驱动信号，将转换电路的输入端连接对应的补充信号源。
PCT/CN2018/115779 2018-11-01 2018-11-16 显示驱动装置以及显示装置、显示模组 WO2020087577A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN112863456A (zh) * 2021-03-02 2021-05-28 重庆先进光电显示技术研究院 显示模组、显示模组的伽马电压调节方法及显示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102323844A (zh) * 2011-06-20 2012-01-18 旭曜科技股份有限公司 宽输出范围的转换系统
CN102568409A (zh) * 2010-12-15 2012-07-11 联咏科技股份有限公司 液晶显示器的栅极驱动方法及装置
US20120280965A1 (en) * 2011-05-03 2012-11-08 Apple Inc. System and method for controlling the slew rate of a signal
CN105185346A (zh) * 2015-10-23 2015-12-23 京东方科技集团股份有限公司 一种显示装置
CN105679230A (zh) * 2016-04-25 2016-06-15 京东方科技集团股份有限公司 一种显示驱动电路、其驱动方法及显示装置
CN208861647U (zh) * 2018-11-01 2019-05-14 惠科股份有限公司 显示驱动装置以及显示装置、显示模组

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7164405B1 (en) * 1998-06-27 2007-01-16 Lg.Philips Lcd Co., Ltd. Method of driving liquid crystal panel and apparatus
CN106098012B (zh) * 2016-08-18 2018-11-23 深圳市华星光电技术有限公司 液晶显示器及其驱动方法、电子装置
CN107123407B (zh) * 2017-06-20 2019-08-02 深圳市华星光电技术有限公司 一种驱动电路系统及包含该驱动电路系统的液晶显示器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102568409A (zh) * 2010-12-15 2012-07-11 联咏科技股份有限公司 液晶显示器的栅极驱动方法及装置
US20120280965A1 (en) * 2011-05-03 2012-11-08 Apple Inc. System and method for controlling the slew rate of a signal
CN102323844A (zh) * 2011-06-20 2012-01-18 旭曜科技股份有限公司 宽输出范围的转换系统
CN105185346A (zh) * 2015-10-23 2015-12-23 京东方科技集团股份有限公司 一种显示装置
CN105679230A (zh) * 2016-04-25 2016-06-15 京东方科技集团股份有限公司 一种显示驱动电路、其驱动方法及显示装置
CN208861647U (zh) * 2018-11-01 2019-05-14 惠科股份有限公司 显示驱动装置以及显示装置、显示模组

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