WO2021103183A1 - 驱动电路、驱动方法及显示装置 - Google Patents

驱动电路、驱动方法及显示装置 Download PDF

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Publication number
WO2021103183A1
WO2021103183A1 PCT/CN2019/125169 CN2019125169W WO2021103183A1 WO 2021103183 A1 WO2021103183 A1 WO 2021103183A1 CN 2019125169 W CN2019125169 W CN 2019125169W WO 2021103183 A1 WO2021103183 A1 WO 2021103183A1
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WO
WIPO (PCT)
Prior art keywords
module
common voltage
power management
management chip
control module
Prior art date
Application number
PCT/CN2019/125169
Other languages
English (en)
French (fr)
Inventor
李文芳
曹丹
Original Assignee
Tcl华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tcl华星光电技术有限公司 filed Critical Tcl华星光电技术有限公司
Priority to US16/627,300 priority Critical patent/US20210256890A1/en
Publication of WO2021103183A1 publication Critical patent/WO2021103183A1/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
    • 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
    • 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
    • G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
    • 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
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—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
    • 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
    • G09G2330/025—Reduction of instantaneous peaks of current
    • 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
    • G09G2330/028—Generation of voltages supplied to electrode drivers in a matrix display other than LCD
    • 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
    • G09G2330/04—Display protection
    • G09G2330/045—Protection against panel overheating
    • 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
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

Definitions

  • This application relates to the field of display technology, and in particular to a driving circuit, a driving method, and a display device.
  • the power control chip and the level conversion circuit are used to transmit the voltage signal, and each channel of the level conversion circuit is detected. When a large current occurs, the level conversion circuit is turned off. Overcurrent protection is provided for high and low potential voltages, but during signal transmission, particles and other foreign objects will appear in the display screen, causing short circuits between clock signal lines, or between clock signal lines and common voltage lines, resulting in a short circuit between the clock signal lines or between the clock signal line and the common voltage line. The current on the common voltage line is large, causing the temperature in the display panel to rise, causing the display screen to melt and damage the display screen.
  • the existing driving circuit has a technical problem that the current on the common voltage line is large and the display screen is damaged.
  • the present application provides a driving circuit, a driving method, and a display device, which are used to solve the technical problem that the existing driving circuit has a large current on the common voltage line and damages the display screen.
  • the present application provides a driving circuit applied to a display panel, and the driving circuit includes:
  • the power management chip is used to output the common voltage to the common voltage driving module
  • the control module is used to detect the current on the common voltage drive module during the blank period of the display frame, and control the power management chip to stop output when the current value on the common voltage drive module is greater than a preset value Common voltage.
  • the control module includes a judgment unit and a feedback unit, and the judgment unit is used to judge the current value and the preset value of the common voltage driving module, and transmit the obtained result to
  • the feedback unit is configured to continue to detect the common voltage driving module in the next display frame when the current value is less than the preset value, and the feedback unit is configured to continue to detect the common voltage driving module in the next display frame when the current value is greater than
  • the power management chip is controlled to stop outputting the common voltage.
  • the power management chip includes a receiving module, and the feedback module is configured to transmit a signal to the receiving module when the current value is greater than the preset value, and the receiving module It is used to stop the power management chip from outputting the common voltage when the signal is received.
  • the control module is provided in the power management chip, and the power management chip is used to detect the current of the common voltage driving module, and the control module is installed on the common voltage driving module. When the current value is greater than the preset value, it will stop automatically.
  • the driving circuit further includes a generating unit and a register, and the generating unit is used to generate first data when the driving circuit enters the blank period of the display frame, and to combine the first data
  • a data is stored in the register
  • the control module is used to start working when the first data in the register is read
  • the generating unit is also used to generate when the drive circuit enters the display time period in the display frame
  • the second data is stored in the register, and the control module is used to stop working when the second data in the register is read.
  • the driving circuit further includes a timing control chip electrically connected to the power management chip for outputting a clock signal; the register is provided in the timing control chip, and the register is connected to the timing control chip.
  • the control module is connected to transfer data to the control module.
  • the drive circuit further includes a timing control chip electrically connected to the power management chip for outputting clock signals; the register is provided in the timing control chip, and the register is used for The data is transferred to the power management chip, and the power management chip is used to transfer the read data of the register to the control module.
  • the driving circuit further includes an alarm module, the alarm module is electrically connected to the control module, and the control module is used to detect the common voltage on the driving module during the blank time period in the display frame The alarm module is used to issue a warning when the current value on the common voltage drive module is equal to a preset value.
  • the present application provides a driving method, which is applied to any of the above-mentioned driving circuits, and the driving method includes:
  • the timing control chip communicates with the power management chip
  • the power management chip outputs the common voltage to the common voltage driving module
  • the control module detects the current on the common voltage drive module during the blank period of the display frame, and controls the power management chip to stop outputting the common voltage when the current on the common voltage drive module is greater than a preset value.
  • the step of controlling the blank period of the display frame in the display frame and detecting the current on the common voltage driving module further includes: in the display period of the display frame of the driving circuit , The control module stops working.
  • the step of detecting the current on the common voltage driving module during the blank period of the display frame by the control module further includes: when the current of the common voltage driving module is less than a preset value , The control module continues to detect the common voltage driving module for the next display frame.
  • the present application provides a display device, which includes any one of the above-mentioned driving circuits.
  • the control module includes a judgment unit and a feedback unit, and the judgment unit is used to judge the current value and the preset value of the common voltage driving module, and transmit the obtained result to
  • the feedback unit is configured to continue to detect the common voltage driving module in the next display frame when the current value is less than the preset value, and the feedback unit is configured to continue to detect the common voltage driving module in the next display frame when the current value is greater than
  • the power management chip is controlled to stop outputting the common voltage.
  • the power management chip includes a receiving module, and the feedback module is configured to transmit a signal to the receiving module when the current value is greater than the preset value, and the receiving module It is used to stop the power management chip from outputting the common voltage when the signal is received.
  • the control module is provided in the power management chip, and the power management chip is used to detect the current of the common voltage drive module, and the control module is installed on the common voltage drive module. When the current value is greater than the preset value, it will stop automatically.
  • the display device further includes a generating unit and a register, and the generating unit is configured to generate first data when the drive circuit enters the blank period of the display frame, and store the first data To the register, the control module is used to start working when the first data in the register is read; the generating unit is also used to generate the second data when the driving circuit enters the display period of the display frame , And store the second data in the register, and the control module is used to stop working when the second data in the register is read.
  • the first data includes 1 and the second data includes 0.
  • the driving circuit further includes a timing control chip electrically connected to the power management chip for outputting a clock signal; the register is provided in the timing control chip, and the register is connected to the timing control chip.
  • the control module is connected to transfer data to the control module.
  • the drive circuit further includes a timing control chip electrically connected to the power management chip for outputting clock signals; the register is provided in the timing control chip, and the register is used for The data is transferred to the power management chip, and the power management chip is used to transfer the read data of the register to the control module.
  • the display device further includes an alarm module, the alarm module is electrically connected to the control module, and the control module is used to detect the current on the common voltage driving module during the blank time period in the display frame, The alarm module is used for issuing a warning when the current value on the common voltage driving module is equal to a preset value.
  • the present application provides a driving circuit, a driving method, and a display device.
  • the driving circuit is applied to a display panel.
  • the driving circuit includes a power management chip and a control module.
  • the power management chip is used to output a common voltage to the common voltage driving module.
  • the control module is used for detecting the current on the common voltage driving module during the blank period of the display frame, and controlling the power management chip when the current value on the common voltage driving module is greater than a preset value Stop outputting the common voltage; by setting the control module, when the current value of the control module on the common voltage drive module is greater than the preset value, control the power management chip to stop outputting the common voltage, so that when the current on the common voltage line is large, stop
  • the common voltage drive module outputs voltage, thereby avoiding the phenomenon that the large current causes the screen to damage the display screen, and solves the technical problem that the existing drive circuit has a large current on the common voltage line and damages the display screen.
  • FIG. 1 is a schematic diagram of a driving circuit provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of the driving time of the driving circuit provided by an embodiment of the application.
  • FIG. 3 is a flowchart of a driving method provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a display module provided by an embodiment of the application.
  • the present application provides a driving circuit, a driving method, and a display device.
  • a driving circuit a driving method
  • a display device a display device.
  • the present application addresses the technical problem that the existing driving circuit has a large current on the common voltage line and damages the display screen.
  • the embodiments of the present application are used to solve this problem.
  • an embodiment of the present application provides a driving circuit, and the driving circuit includes:
  • the power management chip 12 is used to output a common voltage to the common voltage driving module 14;
  • the control module 13 is used for detecting the current on the common voltage driving module 14 during the blank period of the display frame, and controlling the power management when the current value on the common voltage driving module 14 is greater than a preset value
  • the chip 12 stops outputting the common voltage.
  • the embodiment of the application provides a driving circuit, the driving circuit includes a power management chip and a control module, the power management chip is used to output a common voltage to the common voltage drive module, the control module is used to display the frame In the blank period, the current on the common voltage driving module is detected, and when the current value on the common voltage driving module is greater than the preset value, the power management chip is controlled to stop outputting the common voltage; the control module is set to control When the current value of the module on the common voltage drive module is greater than the preset value, the power management chip is controlled to stop outputting the common voltage, so that when the current on the common voltage line is large, it stops outputting the voltage to the common voltage drive module, thereby avoiding large
  • the phenomenon that the current causes the molten screen to damage the display screen solves the technical problem that the existing driving circuit has a large current on the common voltage line and damages the display screen.
  • the preset value is a current value determined according to the driving circuit, and the preset value is one not greater than the current value for melting the display panel, and is selected according to the design and requirements of the driving circuit in the actual process.
  • the detection of the current can intuitively reflect whether the current during the period of time is too large and whether the current causes damage to the display screen.
  • the preset value is selected according to the current, for example, the current preset value can be selected 10 mA.
  • the driving circuit further includes a timing control chip 11, and the timing control chip is electrically connected to the power management chip 12 for outputting a clock signal.
  • the power management chip communicates with the timing control chip through an I2C bus.
  • the timing control chip transmits to the power management chip Signal to enable the power management chip to output a common voltage to the common voltage driving module.
  • the display frame T in the driving circuit includes a display time period T1 and a blank time period T2, and the control module is used for the display time period in the display frame of the driving circuit, Stop working.
  • the control module is used for the display time period in the display frame of the driving circuit, Stop working.
  • the power management chip is stopped during the display time period to make it impossible to display.
  • Stop the control module so that the display panel displays the display time period normally.
  • the current on the common voltage driving module is detected during the blank time period in the display frame, which can avoid affecting the circuit in the display time period, and the circuit will not be affected during the blank time period.
  • the control module detects the influence of the common voltage drive module to avoid false judgments.
  • the control module starts to work to detect the current on the common voltage driving module, and the current value on the common voltage driving module is greater than the preset value
  • the power management chip when detecting the common voltage driving module, the input and output terminals of the common voltage driving module can be detected.
  • the current value of each common voltage driving module is greater than the preset value , which means that the current will damage the display panel, and even cause the phenomenon of melting screen, so that the power management chip stops working and stops outputting current to the display panel, so that the display panel will not be damaged due to a larger current, which solves the existing problem.
  • the driving circuit has a technical problem that the current on the common voltage line is large and the display screen is damaged.
  • the control module detects the current on the common voltage driving module during the blank period of the display frame of the driving circuit, and drives the current on the common voltage When the current value on the module is less than the preset value, continue to detect the common voltage drive module in the next display frame of the drive circuit. When the common voltage drive module is detected in this display frame, the drive circuit works normally.
  • the control module can detect the common voltage driving module again in the next display frame, thereby maintaining the detection of the common voltage driving module, and avoiding the problem of excessive public voltage damaging the display screen.
  • control module includes a judging unit and a feedback unit
  • the judging unit is used to judge the current value and the preset value of the common voltage driving module, and pass the obtained result to the feedback unit
  • the feedback unit is used for feedback according to the obtained result; when the control module detects the common voltage driving module, the judging unit obtains the current value of the common voltage driving module, and compares the current value of the common voltage driving module with the preset value. Set the value for comparison, and then pass the comparison result to the feedback unit, and the feedback unit will feedback according to the comparison result after receiving the comparison result.
  • the feedback unit is configured to continue to detect the common voltage driving module in the next display frame when the current value is less than the preset value, and the feedback unit is configured to continue to detect the common voltage driving module in the next display frame.
  • the power management chip is controlled to stop outputting the common voltage; after receiving the comparison result, the feedback unit feedbacks according to the comparison result, and when the current value is less than the preset value, That is, the current output by the common voltage driving module is the normal output current or the output current is the current that will not affect the display screen.
  • the feedback unit does not need to feedback the power management chip, and the feedback unit continues to judge the unit according to the next display frame.
  • the transmitted information can be fed back; when the feedback unit receives that the current value is greater than the preset value, it can transmit a signal to the power management chip to stop the power management chip, thereby avoiding damage to the display screen.
  • the power management chip includes a receiving module, and the feedback module is configured to transmit a signal to the receiving module when the current value is greater than the preset value, and the receiving module is configured to When the signal is received, the power management chip is caused to stop outputting the common voltage.
  • control module is used to detect the current on the common voltage driving module during the blank period of the display frame, and when the current value on the common voltage driving module is equal to a preset value, Stop the power management chip.
  • control module is used to detect the current on the common voltage driving module during the blank period of the display frame, and when the current value on the common voltage driving module is equal to a preset value, Continue to detect the common voltage driving module of the next display frame.
  • the power management chip when the current value is equal to the preset value, the power management chip can be stopped, the driving circuit can also be operated, and the control module continues to drive the module for the common voltage in the next display frame.
  • you can also send out a warning message for example, the status is displayed on the display screen, and when the current value is equal to the preset value, it will react according to the needs in the actual use process.
  • an alarm module can be set up to connect the alarm module to the control module.
  • the control module detects that the current value of the public voltage drive module is equal to the preset value
  • the alarm module sounds Or display to warn this state, so as to avoid further damage to the display screen when the current value of the common voltage drive module is greater than the preset value.
  • the driving circuit further includes an alarm module, the alarm module is electrically connected to the control module, and the control module is used to detect the current on the common voltage driving module during the blank time period in the display frame The alarm module is used to issue a warning when the current value on the common voltage drive module is equal to a preset value.
  • the control module is disposed in the power management chip, and the power management chip is used to detect the current of the common voltage driving module, and the current value on the common voltage driving module is When it is greater than the preset value, it stops automatically; the control module is set in the power management chip, and the control module in the power management chip detects the common voltage driving module during the blank period of the display frame, and the common voltage driving module When the current value on the power management chip is greater than the preset value, the power management chip automatically stops, and during the display period, the power management chip outputs a common voltage to the common voltage driving module; and the control module in the power management chip detects the common voltage driving module When the current value on the upper side is less than the preset value, the power management chip continues to work in the next display frame, and the control module stops working in the display time period of the next display frame, and performs the operation on the common voltage drive module again in the blank time period of the next display frame. Detection, because the control module works in the blank time period and can work independently, so that
  • the driving circuit further includes a generating unit and a register, and the generating unit is used to generate the first data when the driving circuit enters the blank period of the display frame, and to combine the first data
  • the data is stored in the register, and the control module is used to start working when the first data in the register is read; the generating unit is also used to generate the first data when the driving circuit enters the display time period in the display frame Second data, and store the second data in the register, the control module is used to stop working when the second data in the register is read; in order to make the control module enter the blank period of the display frame when the drive circuit
  • the register stores the first data when the drive circuit enters the blank period of the display frame, and the control module starts to work when the first data in the register is read, even if the control The module starts to work when the drive circuit enters the blank period of the display frame, and when the drive circuit enters the display period of the display frame, the register stores the second data, so that when the control module reads the second
  • the register when the register receives the signal from the drive chip, it outputs the first data or the second data to the control module, so that the control module works in the blank period of the display frame, and in the display time of the display frame The segment stops working.
  • the first data is 1 and the second data is 0.
  • the drive circuit further includes a timing control chip electrically connected to the power management chip for outputting a clock signal; the register is provided in the timing control chip, and the register is connected to the control chip.
  • the module connection is used to transfer data to the control module, and the register is set in the timing control chip, so that the register converts and outputs the first data and the second data according to the signal of the timing control chip, and the register is directly electrically connected to the control module, and the control module According to the received data to react accordingly.
  • the driving circuit further includes a timing control chip electrically connected to the power management chip for outputting a clock signal; the register is provided in the timing control chip, and the register is used to transfer data To the power management chip, the power management chip is used to transfer the received data of the register to the control module; considering the communication between the timing control chip and the power management chip, the register converts the first data and the second data when the data is converted. The data is transferred to the power management chip. After receiving the data from the register, the power management chip transfers the data to the control module, and the control module reacts accordingly according to the data transferred by the power management chip.
  • the register is set in the timing control chip
  • the control module is set in the power management chip
  • the timing control chip communicates with the power management chip
  • the control module in the power management chip It communicates with the register in the timing control chip, and the control module determines whether to work through the data of the register.
  • an embodiment of the present application provides a driving method, which is applied to the driving circuit in any of the above-mentioned embodiments, and the driving method of the driving circuit includes:
  • the timing control chip communicates with the power management chip
  • the power management chip outputs the common voltage to the common voltage driving module
  • control module detects the current on the common voltage drive module during the blank period of the display frame, and stops the power management chip when the current on the common voltage drive module is greater than a preset value.
  • An embodiment of the present application provides a driving method.
  • a driving circuit using the driving method includes a power management chip and a control module.
  • the power management chip is used to output a common voltage to the common voltage driving module
  • the control module is used to In the blank period of the display frame of the driving circuit, detecting the current on the common voltage driving module, and controlling the power management chip to stop outputting the common voltage when the current value on the common voltage driving module is greater than a preset value;
  • the control module when the current value of the control module on the common voltage driving module is greater than the preset value, the power management chip is controlled to stop outputting the common voltage, so that when the current on the common voltage line is large, the common voltage driving module is stopped.
  • the output voltage avoids the phenomenon that the large current causes the molten screen to damage the display screen, and solves the technical problem that the existing driving circuit has a large current on the common voltage line and damages the display screen.
  • the step of using the blank period of the control module in the display frame to detect the current on the common voltage driving module further includes: in the display period of the display frame of the driving circuit, The control module stops working. During the display period of the display frame, the control module stops working, so that the control module does not affect the display during the display period, so that the display is normal.
  • the step of using the control module to detect the current on the common voltage driving module during the blank period of the display frame further includes: when the current of the common voltage driving module is less than a preset value, The control module continues to detect the common voltage drive module in the next display frame; when the current of the common voltage drive module is less than the preset value, continues to detect the common voltage drive module in the next display frame, Therefore, the common voltage driving module is continuously detected to avoid the large current output by the common voltage driving module and damage the display screen.
  • the register receives the signal of the drive chip.
  • the timing controller communicates with the power management chip and the power management chip transmits the signal to the common voltage drive module
  • the register outputs the first data
  • the control module receives the first data. The data starts to work and the public voltage drive module is detected.
  • control module When the control module detects that the current value of the public voltage drive module is greater than the preset value, the control module transmits a signal to the power management chip to stop the power management chip; and when When the current value of the common voltage driving module is less than the preset value, the common voltage driving module does not transmit a signal to the power management chip, so that the power management chip continues to work, and when the driving circuit enters the display period of the display frame, the register outputs the second data , So that the control module stops working, so as to avoid interference to the display.
  • the power management chip stops working, after repairing the area where the short circuit or other circuit problems occur, the power management chip continues to work, so that the driving circuit continues to work.
  • control module detects the common voltage driving module in each display frame.
  • the detection interval can be set according to requirements, for example, the common voltage driving module is detected at an interval of 1 minute.
  • an embodiment of the present application provides a display module, which includes:
  • the timing control board 22 includes a drive circuit, the drive circuit includes a power management chip 12 and a control module 13, the power management chip 12 is used to output a common voltage to the common voltage drive module 14, the control The module 13 is used for detecting the current on the common voltage driving module 14 during the blank period of the display frame, and stopping the power management chip 12 when the current value on the common voltage driving module 14 is greater than a preset value.
  • the power management chip is used to output a driving voltage to the gate drive circuit
  • the control module includes a first control module and a second control module
  • the first control module is used to display In the blank period of the frame, the current on the common voltage driving module is detected, and when the current value on the common voltage driving module is greater than a preset value, the power management chip is controlled to stop outputting the common voltage
  • the second The control module is used for detecting the current on the gate driving circuit during the blank period of the display frame, and stopping the power management chip when the current value on the gate driving circuit is greater than a preset value;
  • the power management chip transmits the driving voltage to the gate driving circuit module.
  • the driving voltage includes VGH (high potential signal) and VGL (low potential signal).
  • the detection circuit can be used to detect the gate driving circuit module to avoid high potential signals and There is a problem with the low-level signal, which damages the gate drive circuit.
  • An embodiment of the present application provides a display device, and the display device includes the driving circuit described in any one of the foregoing embodiments.
  • the control module includes a judging unit and a feedback unit, and the judging unit is used to judge the current value of the common voltage driving module and the size of the preset value, and obtain The result is passed to the feedback unit, and the feedback unit is used to continue to detect the common voltage driving module in the next display frame when the current value is less than the preset value, and the feedback unit is used to continue to detect the common voltage driving module in the next display frame.
  • the power management chip is controlled to stop outputting the common voltage.
  • the power management chip includes a receiving module, and the feedback module is configured to transmit a signal to the receiving module when the current value is greater than the preset value, so The receiving module is used to stop the power management chip from outputting the common voltage when a signal is received.
  • control module is provided in the power management chip, and the power management chip is used to detect the current of the common voltage driving module and drive it at the common voltage. When the current value on the module is greater than the preset value, it will automatically stop.
  • the display device further includes a generating unit and a register, and the generating unit is configured to generate the first data when the driving circuit enters the blank period of the display frame, and combine the first data A data is stored in the register, and the control module is used to start working when the first data in the register is read; the generating unit is also used to generate when the drive circuit enters the display time period in the display frame The second data is stored in the register, and the control module is used to stop working when the second data in the register is read.
  • the first data includes 1 and the second data includes 0.
  • the driving circuit further includes a timing control chip electrically connected to the power management chip for outputting a clock signal; the register is provided in the timing control chip, and the The register is connected with the control module and is used to transfer data to the control module.
  • the driving circuit further includes a timing control chip electrically connected to the power management chip for outputting a clock signal; the register is provided in the timing control chip, and the The register is used to transfer data to the power management chip, and the power management chip is used to transfer the read data of the register to the control module.
  • the display device further includes an alarm module, the alarm module is electrically connected to the control module, and the control module is used to detect the common voltage driving module during the blank period in the display frame The alarm module is used to issue a warning when the current value on the common voltage drive module is equal to a preset value.
  • the embodiment of the application provides a driving circuit, a driving method, and a display device.
  • the driving circuit includes a power management chip and a control module.
  • the power management chip is used to output a common voltage to the common voltage driving module.
  • the current on the common voltage driving module is detected, and when the current value on the common voltage driving module is greater than a preset value, the power management chip is controlled to stop outputting the common Voltage; by setting the control module, when the current value of the control module on the common voltage driving module is greater than the preset value, the power management chip is controlled to stop outputting the common voltage, so that when the current on the common voltage line is large, the common voltage is stopped
  • the drive module outputs voltage, thereby avoiding the phenomenon that the large current causes the screen to damage the display screen, and solves the technical problem that the existing drive circuit has a large current on the common voltage line and damages the display screen.

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Abstract

一种驱动电路、驱动方法及显示装置，该驱动电路应用于显示面板（21），驱动电路通过设置控制模块（13），使控制模块（13）在公共电压驱动模块（14）上的电流值大于预设值时，控制电源管理芯片（12）停止输出公共电压，使得在公共电压线上的电流较大时，停止对公共电压驱动模块（14）输出电压，从而避免大电流造成熔屏损伤显示屏的现象。

Description

驱动电路、驱动方法及显示装置 技术领域
本申请涉及显示技术领域，尤其是涉及一种驱动电路、驱动方法及显示装置。
 背景技术
现有显示屏的驱动电路中，会使用电源控制芯片和电平转换电路来传输电压信号，且会对电平转换电路的各个通道进行检测，在发生大电流时，关闭电平转换电路，以对高电位和低电位电压进行过流保护，但在信号传输过程中，由于显示屏内会出现颗粒等异物，使得时钟信号线之间、或者时钟信号线与公共电压线之间短路，从而造成公共电压线上的电流较大，造成显示面板内的温度升高，造成显示屏出现熔屏现象，损伤显示屏。
所以，现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题。
 技术问题
本申请提供一种驱动电路、驱动方法及显示装置，用于解决现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请提供一种驱动电路，应用于显示面板，该驱动电路包括：
电源管理芯片，用于向公共电压驱动模块输出公共电压；
控制模块，用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值大于预设值时，控制所述电源管理芯片停止输出公共电压。
在本申请提供的驱动电路中，所述控制模块包括判断单元和反馈单元，所述判断单元用于判断所述公共电压驱动模块的电流值和预设值的大小，并将得到的结果传递给反馈单元，所述反馈单元用于在所述电流值小于所述预设值时，继续对下一显示帧中的公共电压驱动模块进行侦测，所述反馈单元用于在所述电流值大于所述预设值时，控制所述电源管理芯片停止输出公共电压。
在本申请提供的驱动电路中，所述电源管理芯片包括接收模块，所述反馈模块用于在所述电流值大于所述预设值时，将信号传递给所述接收模块，所述接收模块用于在接收到信号时，使所述电源管理芯片停止输出公共电压。
在本申请提供的驱动电路中，所述控制模块设置于所述电源管理芯片内，所述电源管理芯片用于对公共电压驱动模块的电流进行侦测，并在所述公共电压驱动模块上的电流值大于预设值时，自动停止。
在本申请提供的驱动电路中，该驱动电路还包括生成单元和寄存器，所述生成单元用于在所述驱动电路进入显示帧中的空白时间段时，生成第一数据，并将所述第一数据存储到寄存器，所述控制模块用于在读取到寄存器内的第一数据时，开始工作，所述生成单元还用于在所述驱动电路进入显示帧中的显示时间段时，生成第二数据，并将所述第二数据存储到寄存器，所述控制模块用于在读取到寄存器内的第二数据时，停止工作。
在本申请提供的驱动电路中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器与所述控制模块连接，用于将数据传递给控制模块。
在本申请提供的驱动电路中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器用于将数据传递给电源管理芯片，所述电源管理芯片用于将读取到的寄存器的数据传递给控制模块。
在本申请提供的驱动电路中，该驱动电路还包括报警模块，所述报警模块电连接所述控制模块，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，所述报警模块用于在所述公共电压驱动模块上的电流值等于预设值时，发出警告。
同时，本申请提供一种驱动方法，应用于上述任一所述的驱动电路，该驱动方法包括：
时序控制芯片与电源管理芯片进行通讯；
电源管理芯片向公共电压驱动模块输出公共电压；
控制模块在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流大于预设值时，控制所述电源管理芯片停止输出公共电压。
在本申请提供的驱动方法中，所述控制模块在显示帧中的空白时间段、侦测公共电压驱动模块上的电流的步骤还包括：在所述驱动电路的显示帧中的显示时间段内，所述控制模块停止工作。
在本申请提供的驱动方法中，所述控制模块在显示帧中的空白时间段、侦测公共电压驱动模块上的电流的步骤还包括：在所述公共电压驱动模块的电流小于预设值时，所述控制模块继续对公共电压驱动模块进行下一显示帧的侦测。
同时，本申请提供一种显示装置，该显示装置包括上述任一所述的驱动电路。
在本申请提供的显示装置中，所述控制模块包括判断单元和反馈单元，所述判断单元用于判断所述公共电压驱动模块的电流值和预设值的大小，并将得到的结果传递给反馈单元，所述反馈单元用于在所述电流值小于所述预设值时，继续对下一显示帧中的公共电压驱动模块进行侦测，所述反馈单元用于在所述电流值大于所述预设值时，控制所述电源管理芯片停止输出公共电压。
在本申请提供的显示装置中，所述电源管理芯片包括接收模块，所述反馈模块用于在所述电流值大于所述预设值时，将信号传递给所述接收模块，所述接收模块用于在接收到信号时，使所述电源管理芯片停止输出公共电压。
在本申请提供的显示装置中，所述控制模块设置于所述电源管理芯片内，所述电源管理芯片用于对公共电压驱动模块的电流进行侦测，并在所述公共电压驱动模块上的电流值大于预设值时，自动停止。
在本申请提供的显示装置中，还包括生成单元和寄存器，所述生成单元用于在所述驱动电路进入显示帧中的空白时间段时，生成第一数据，并将所述第一数据存储到寄存器，所述控制模块用于在读取到寄存器内的第一数据时，开始工作；所述生成单元还用于在所述驱动电路进入显示帧中的显示时间段时，生成第二数据，并将所述第二数据存储到寄存器，所述控制模块用于在读取到寄存器内的第二数据时，停止工作。
在本申请提供的显示装置中，所述第一数据包括1，所述第二数据包括0。
在本申请提供的显示装置中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器与所述控制模块连接，用于将数据传递给控制模块。
在本申请提供的显示装置中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器用于将数据传递给电源管理芯片，所述电源管理芯片用于将读取到的寄存器的数据传递给控制模块。
在本申请提供的显示装置中，还包括报警模块，所述报警模块电连接所述控制模块，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，所述报警模块用于在所述公共电压驱动模块上的电流值等于预设值时，发出警告。
 有益效果
本申请提供一种驱动电路、驱动方法及显示装置，该驱动电路应用于显示面板，该驱动电路包括电源管理芯片和控制模块，所述电源管理芯片用于向所述公共电压驱动模块输出公共电压，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值大于预设值时，控制所述电源管理芯片停止输出公共电压；通过设置控制模块，使控制模块在公共电压驱动模块上的电流值大于预设值时，控制电源管理芯片停止输出公共电压，使得在公共电压线上的电流较大时，停止对公共电压驱动模块输出电压，从而避免了大电流造成熔屏损伤显示屏的现象，解决了现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题。
 附图说明
图1为本申请实施例提供的驱动电路的示意图；
图2为本申请实施例提供的驱动电路的驱动时间示意图；
图3为本申请实施例提供的驱动方法的流程图；
图4为本申请实施例提供的显示模组的示意图。
 本发明的实施方式
本申请提供一种驱动电路、驱动方法及显示装置，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请针对现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题，本申请实施例用以解决该问题。
如图1所示，本申请实施例提供一种驱动电路，该驱动电路包括：
电源管理芯片12，用于向公共电压驱动模块14输出公共电压；
控制模块13，用于在显示帧中的空白时间段，侦测公共电压驱动模块14上的电流，并在所述公共电压驱动模块14上的电流值大于预设值时，控制所述电源管理芯片12停止输出公共电压。
本申请实施例提供一种驱动电路，该驱动电路包括电源管理芯片和控制模块，所述电源管理芯片用于向所述公共电压驱动模块输出公共电压，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值大于预设值时，控制所述电源管理芯片停止输出公共电压；通过设置控制模块，使控制模块在公共电压驱动模块上的电流值大于预设值时，控制电源管理芯片停止输出公共电压，使得在公共电压线上的电流较大时，停止对公共电压驱动模块输出电压，从而避免了大电流造成熔屏损伤显示屏的现象，解决了现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题。
需要说明的是，预设值为根据驱动电路确定的一个电流值，该预设值为一不大于使显示面板熔屏的电流值，以实际过程中驱动电路的设计和需求选择。
在本申请实施例中，对电流进行侦测，可直观的体现该时间段电流是否过大，电流是否对显示屏产生损伤，同时，该预设值根据电流选取，例如电流预设值可选取10毫安。
在一种实施例中，如图1所示，所述驱动电路还包括时序控制芯片11，所述时序控制芯片与所述电源管理芯片12电连接，用于输出时钟信号。
在一种实施例中，如图1所示，所述电源管理芯片与所述时序控制芯片通过I2C总线进行通讯，在需要对公共电压驱动模块输出公共电压时，时序控制芯片向电源管理芯片传递信号，使得所述电源管理芯片向公共电压驱动模块输出公共电压。
在一种实施例中，如图2所示，驱动电路中显示帧T包括显示时间段T1和空白时间段T2，所述控制模块用于在所述驱动电路的显示帧中的显示时间段，停止工作，考虑到显示时间段内公共电压驱动模块中的公共电压变化较大，为避免控制模块出现错误判断，在显示时间段内将电源管理芯片停止，使得无法显示，在显示时间段内，将控制模块停止工作，以使显示时间段显示面板正常显示。
在本申请实施例中，在显示帧中的空白时间段对公共电压驱动模块上的电流进行侦测，可避免对显示时间段内的电路产生影响，且在空白时间段内电路也不会对控制模块侦测公共电压驱动模块产生影响，从而避免出现错误判断。
在一种实施例中，在驱动电路进入显示帧中的空白时间段时，控制模块开始工作，对公共电压驱动模块上的电流进行侦测，在公共电压驱动模块上的电流值大于预设值时，停止所述电源管理芯片，在对公共电压驱动模块进行侦测时，可以对公共电压驱动模块的输入端和输出端进行侦测，在各公共电压驱动模块的电流值大于预设值时，表示该电流会对显示面板产生损伤，甚至出现熔屏现象，从而使得电源管理芯片停止工作，停止对显示面板输出电流，使得显示面板不会因较大的电流出现损伤，解决了现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题。
在一种实施例中，所述控制模块在用于在所述驱动电路的显示帧中的空白时间段内，对所述公共电压驱动模块上的电流进行侦测，并在所述公共电压驱动模块上的电流值小于预设值时，继续对驱动电路的下一显示帧中的公共电压驱动模块进行侦测，在这一显示帧对公共电压驱动模块进行侦测时，驱动电路正常工作，可使控制模块在下一显示帧再次对公共电压驱动模块进行侦测，从而保持对公共电压驱动模块的侦测，避免出现公共电压过大损伤显示屏的问题。
在一种实施例中，所述控制模块包括判断单元和反馈单元，所述判断单元用于判断所述公共电压驱动模块的电流值和预设值的大小，并将得到的结果传递给反馈单元，所述反馈单元用于根据得到的结果进行反馈；在控制模块对公共电压驱动模块进行侦测时，判断单元获取到公共电压驱动模块的电流值，并对公共电压驱动模块的电流值与预设值进行比较，然后将该比较结果传递给反馈单元，反馈单元在接收到该比较结果后，根据比较结果进行反馈。
在一种实施例中，所述反馈单元用于在所述电流值小于所述预设值时，继续对下一显示帧中的公共电压驱动模块进行侦测，所述反馈单元用于在所述电流值大于所述预设值时，控制所述电源管理芯片停止输出公共电压；反馈单元在接收到比较结果后，根据比较结果进行反馈，在所述电流值小于所述预设值时，即公共电压驱动模块输出的电流为正常输出的电流或者输出的电流为不会对显示屏产生影响的电流，反馈单元无需对电源管理芯片进行反馈，反馈单元继续根据下一显示帧中的判断单元传递的信息进行反馈即可；所述反馈单元在接收到电流值大于预设值时，可向电源管理芯片传递信号，使得电源管理芯片停止，从而避免对显示屏产生损伤。
在一种实施例中，所述电源管理芯片包括接收模块，所述反馈模块用于在所述电流值大于所述预设值时，将信号传递给所述接收模块，所述接收模块用于在接收到信号时，使所述电源管理芯片停止输出公共电压。
在一种实施例中，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值等于预设值时，停止所述电源管理芯片。
在一种实施例中，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值等于预设值时，继续对下一显示帧的公共电压驱动模块进行侦测。
在本申请实施例中，在所述电流值等于所述预设值时，可停止所述电源管理芯片，也可使驱动电路进行工作，控制模块继续对下一显示帧中的公共电压驱动模块进行侦测，还可以发出警告信息，例如通过显示屏显示出该状态，在电流值等于预设值时，根据实际使用过程中的需求进行反应。
针对公共电压驱动模块的电流值等于预设值时，可设置报警模块，使报警模块与控制模块连接，在控制模块侦测到公共电压驱动模块的电流值等于预设值时，报警模块通过声音或者显示来警示该状态，从而避免进一步出现公共电压驱动模块的电流值大于预设值时，损伤显示屏。
在一种实施例中，该驱动电路还包括报警模块，所述报警模块电连接所述控制模块，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，所述报警模块用于在所述公共电压驱动模块上的电流值等于预设值时，发出警告。
在一种实施例中，所述控制模块设置于所述电源管理芯片内，所述电源管理芯片用于对公共电压驱动模块的电流进行侦测，并在所述公共电压驱动模块上的电流值大于预设值时，自动停止；在电源管理芯片中设置控制模块，在显示帧的空白时间段，电源管理芯片中的控制模块对公共电压驱动模块进行侦测，且在所述公共电压驱动模块上的电流值大于预设值时，电源管理芯片自动停止，而在显示时间段，电源管理芯片向公共电压驱动模块输出公共电压；而在电源管理芯片中的控制模块侦测到公共电压驱动模块上的电流值小于预设值时，电源管理芯片继续下一显示帧的工作，而控制模块在下一显示帧的显示时间段停止工作，在下一显示帧的空白时间段再次对公共电压驱动模块进行侦测，由于控制模块在空白时间段工作，且可独立工作，使得电源管理芯片中的控制模块不会对电源管理芯片中的其他模块产生影响。
在一种实施例中，所述驱动电路还包括生成单元和寄存器，所述生成单元用于在所述驱动电路进入显示帧中的空白时间段时，生成第一数据，并将所述第一数据存储到寄存器，所述控制模块用于在读取到寄存器内的第一数据时，开始工作；所述生成单元还用于在所述驱动电路进入显示帧中的显示时间段时，生成第二数据，并将所述第二数据存储到寄存器，所述控制模块用于在读取到寄存器内的第二数据时，停止工作；为了使控制模块在驱动电路进入显示帧中的空白时间段时，对公共电压驱动模块进行侦测，使得寄存器在驱动电路进入显示帧中的空白时间段时，存储第一数据，控制模块在读取到寄存器内的第一数据时，开始工作，即使控制模块在驱动电路进入显示帧的空白时间段时开始工作，而当驱动电路进入显示帧中的显示时间段时，寄存器存储第二数据，使得控制模块在读取到寄存器内的第二数据时，停止工作，即控制模块在驱动电路进入显示帧中的显示时间段不进行侦测工作，避免干扰显示。
在一种实施例中，所述寄存器在接收到驱动芯片的信号时，向控制模块输出第一数据或者第二数据，以使控制模块在显示帧的空白时间段工作，在显示帧的显示时间段停止工作。
在一种实施例中，所述第一数据为1，所述第二数据为0。
在一种实施例中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器与所述控制模块连接，用于将数据传递给控制模块，将寄存器设置于时序控制芯片内，使得寄存器根据时序控制芯片的信号变换输出第一数据和第二数据，且寄存器直接于控制模块电连接，控制模块根据接收到的数据进行相应的反应。
在一种实施例中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器用于将数据传递给电源管理芯片，所述电源管理芯片用于将接收到的寄存器的数据传递给控制模块；考虑时序控制芯片与电源管理芯片之间进行通讯，寄存器在变换数据时将第一数据和第二数据传递给电源管理芯片，电源管理芯片在接收到寄存器的数据后，将数据传递给控制模块，控制模块根据电源管理芯片传递的数据进行相应的反应。
在一种实施例中，所述寄存器设置于所述时序控制芯片内，所述控制模块设置于所述电源管理芯片内，时序控制芯片与电源管理芯片进行通讯，同时电源管理芯片内的控制模块与时序控制芯片内的寄存器进行通讯，控制模块通过寄存器的数据决定是否工作。
如图3所示，本申请实施例提供一种驱动方法，应用于上述任一实施例中的驱动电路，该驱动电路驱动方法包括：
S1，时序控制芯片与电源管理芯片进行通讯；
S2，电源管理芯片向公共电压驱动模块输出公共电压；
S3，控制模块在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流大于预设值时，停止所述电源管理芯片。
本申请实施例提供一种驱动方法，使用该驱动方法的驱动电路包括电源管理芯片和控制模块，所述电源管理芯片用于向所述公共电压驱动模块输出公共电压，所述控制模块用于在驱动电路的显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值大于预设值时，控制所述电源管理芯片停止输出公共电压；通过设置控制模块，使控制模块在公共电压驱动模块上的电流值大于预设值时，控制电源管理芯片停止输出公共电压，使得在公共电压线上的电流较大时，停止对公共电压驱动模块输出电压，从而避免了大电流造成熔屏损伤显示屏的现象，解决了现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题。
在一种实施例中，所述使用控制模块在显示帧中的空白时间段，侦测公共电压驱动模块上的电流的步骤还包括：在所述驱动电路的显示帧中的显示时间段内，所述控制模块停止工作，在显示帧的显示时间段内，控制模块停止工作，使得控制模块对显示时间段内的显示不产生影响，从而使显示正常。
在一种实施例中，所述使用控制模块在显示帧中的空白时间段，侦测公共电压驱动模块上的电流的步骤还包括：在所述公共电压驱动模块的电流小于预设值时，所述控制模块继续对公共电压驱动模块进行下一显示帧的侦测；在公共电压驱动模块的电流小于所述预设值时，对下一显示帧中的公共电压驱动模块继续进行侦测，从而对公共电压驱动模块持续侦测，避免公共电压驱动模块输出的电流较大，损伤显示屏。
在一种实施例中，寄存器接收驱动芯片的信号，在时序控制器与电源管理芯片通讯，电源管理芯片向公共电压驱动模块传递信号时，寄存器输出第一数据，而控制模块在接收到第一数据开始工作，对公共电压驱动模块进行侦测，在控制模块侦测到公共电压驱动模块的电流值大于预设值时，控制模块传递信号给电源管理芯片，使电源管理芯片停止工作；而当公共电压驱动模块的电流值小于预设值时，公共电压驱动模块不传递信号给电源管理芯片，使电源管理芯片继续工作，而在驱动电路进入显示帧的显示时间段时，寄存器输出第二数据，使控制模块停止工作，从而避免对显示产生干扰。
在一种实施例中，当电源管理芯片停止工作后，在对出现短路或者其他电路问题的区域进行修复后，使电源管理芯片继续工作，从而使得驱动电路继续进行工作。
在本申请实施例中，控制模块对每显示帧的公共电压驱动模块进行侦测，在实际中，可根据需求设定侦测间隔，例如以1分钟为间隔对公共电压驱动模块进行侦测。
如图4所示，本申请实施例提供一种显示模组，该显示模组包括：
显示面板21，所述显示面板21包括公共电压驱动模块14和栅极驱动电路211；
时序控制板22，所述时序控制板22包括驱动电路，所述驱动电路包括电源管理芯片12和控制模块13，所述电源管理芯片12用于向公共电压驱动模块14输出公共电压，所述控制模块13用于在显示帧的空白时间段，侦测公共电压驱动模块14上的电流，并在所述公共电压驱动模块14上的电流值大于预设值时，停止所述电源管理芯片12。
在一种实施例中，所述电源管理芯片用于向所述栅极驱动电路输出驱动电压，所述控制模块包括第一控制模块和第二控制模块，所述第一控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值大于预设值时，控制所述电源管理芯片停止输出公共电压，所述第二控制模块用于在显示帧中的空白时间段，侦测栅极驱动电路上的电流，并在所述栅极驱动电路上的电流值大于预设值时，停止所述电源管理芯片；所述电源管理芯片向栅极驱动电路模块传递驱动电压，驱动电压包括VGH（高电位信号）和VGL（低电位信号），可使用侦测电路对栅极驱动电路模块进行侦测，避免高电位信号和低电位信号出现问题，损伤栅极驱动电路。
本申请实施例提供一种显示装置，该显示装置包括上述实施例中任一所述的驱动电路。
在一种实施例中，在显示装置中，所述控制模块包括判断单元和反馈单元，所述判断单元用于判断所述公共电压驱动模块的电流值和预设值的大小，并将得到的结果传递给反馈单元，所述反馈单元用于在所述电流值小于所述预设值时，继续对下一显示帧中的公共电压驱动模块进行侦测，所述反馈单元用于在所述电流值大于所述预设值时，控制所述电源管理芯片停止输出公共电压。
在一种实施例中，在显示装置中，所述电源管理芯片包括接收模块，所述反馈模块用于在所述电流值大于所述预设值时，将信号传递给所述接收模块，所述接收模块用于在接收到信号时，使所述电源管理芯片停止输出公共电压。
在一种实施例中，在显示装置中，所述控制模块设置于所述电源管理芯片内，所述电源管理芯片用于对公共电压驱动模块的电流进行侦测，并在所述公共电压驱动模块上的电流值大于预设值时，自动停止。
在一种实施例中，在显示装置中，还包括生成单元和寄存器，所述生成单元用于在所述驱动电路进入显示帧中的空白时间段时，生成第一数据，并将所述第一数据存储到寄存器，所述控制模块用于在读取到寄存器内的第一数据时，开始工作；所述生成单元还用于在所述驱动电路进入显示帧中的显示时间段时，生成第二数据，并将所述第二数据存储到寄存器，所述控制模块用于在读取到寄存器内的第二数据时，停止工作。
在一种实施例中，在显示装置中，所述第一数据包括1，所述第二数据包括0。
在一种实施例中，在显示装置中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器与所述控制模块连接，用于将数据传递给控制模块。
在一种实施例中，在显示装置中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器用于将数据传递给电源管理芯片，所述电源管理芯片用于将读取到的寄存器的数据传递给控制模块。
在一种实施例中，在显示装置中，还包括报警模块，所述报警模块电连接所述控制模块，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，所述报警模块用于在所述公共电压驱动模块上的电流值等于预设值时，发出警告。
根据以上实施例可知：
本申请实施例提供一种驱动电路、驱动方法及显示装置，该驱动电路包括电源管理芯片和控制模块，所述电源管理芯片用于向所述公共电压驱动模块输出公共电压，所述控制模块用于在驱动电路的显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值大于预设值时，控制所述电源管理芯片停止输出公共电压；通过设置控制模块，使控制模块在公共电压驱动模块上的电流值大于预设值时，控制电源管理芯片停止输出公共电压，使得在公共电压线上的电流较大时，停止对公共电压驱动模块输出电压，从而避免了大电流造成熔屏损伤显示屏的现象，解决了现有的驱动电路存在公共电压线上电流较大，损伤显示屏的技术问题。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种驱动电路，应用于显示面板，其包括：
    电源管理芯片，用于向公共电压驱动模块输出公共电压；
    控制模块，用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流值大于预设值时，控制所述电源管理芯片停止输出公共电压。
  2. 如权利要求1所述的驱动电路，其中，所述控制模块包括判断单元和反馈单元，所述判断单元用于判断所述公共电压驱动模块的电流值和预设值的大小，并将得到的结果传递给反馈单元，所述反馈单元用于在所述电流值小于所述预设值时，继续对下一显示帧中的公共电压驱动模块进行侦测，所述反馈单元用于在所述电流值大于所述预设值时，控制所述电源管理芯片停止输出公共电压。
  3. 如权利要求2所述的驱动电路，其中，所述电源管理芯片包括接收模块，所述反馈模块用于在所述电流值大于所述预设值时，将信号传递给所述接收模块，所述接收模块用于在接收到信号时，使所述电源管理芯片停止输出公共电压。
  4. 如权利要求1所述的驱动电路，其中，所述控制模块设置于所述电源管理芯片内，所述电源管理芯片用于对公共电压驱动模块的电流进行侦测，并在所述公共电压驱动模块上的电流值大于预设值时，自动停止。
  5. 如权利要求1所述的驱动电路，其中，还包括生成单元和寄存器，所述生成单元用于在所述驱动电路进入显示帧中的空白时间段时，生成第一数据，并将所述第一数据存储到寄存器，所述控制模块用于在读取到寄存器内的第一数据时，开始工作；所述生成单元还用于在所述驱动电路进入显示帧中的显示时间段时，生成第二数据，并将所述第二数据存储到寄存器，所述控制模块用于在读取到寄存器内的第二数据时，停止工作。
  6. 如权利要求5所述的驱动电路，其中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器与所述控制模块连接，用于将数据传递给控制模块。
  7. 如权利要求5所述的驱动电路，其中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器用于将数据传递给电源管理芯片，所述电源管理芯片用于将读取到的寄存器的数据传递给控制模块。
  8. 如权利要求1所述的驱动电路，其中，还包括报警模块，所述报警模块电连接所述控制模块，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，所述报警模块用于在所述公共电压驱动模块上的电流值等于预设值时，发出警告。
  9. 一种驱动方法，应用于如权利要求1所述的驱动电路，其包括：
    时序控制芯片与电源管理芯片进行通讯；
    电源管理芯片向公共电压驱动模块输出公共电压；
    控制模块在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，并在所述公共电压驱动模块上的电流大于预设值时，控制所述电源管理芯片停止输出公共电压。
  10. 如权利要求9所述的驱动方法，其中，所述控制模块在显示帧中的空白时间段、侦测公共电压驱动模块上的电流的步骤还包括：在所述驱动电路的显示帧中的显示时间段内，所述控制模块停止工作。
  11. 如权利要求9所述的驱动方法，其中，所述控制模块在显示帧中的空白时间段、侦测公共电压驱动模块上的电流的步骤还包括：在所述公共电压驱动模块的电流小于预设值时，所述控制模块继续对公共电压驱动模块进行下一显示帧的侦测。
  12. 一种显示装置，其包括如权利要求1所述的驱动电路。
  13. 如权利要求12所述的显示装置，其中，所述控制模块包括判断单元和反馈单元，所述判断单元用于判断所述公共电压驱动模块的电流值和预设值的大小，并将得到的结果传递给反馈单元，所述反馈单元用于在所述电流值小于所述预设值时，继续对下一显示帧中的公共电压驱动模块进行侦测，所述反馈单元用于在所述电流值大于所述预设值时，控制所述电源管理芯片停止输出公共电压。
  14. 如权利要求13所述的显示装置，其中，所述电源管理芯片包括接收模块，所述反馈模块用于在所述电流值大于所述预设值时，将信号传递给所述接收模块，所述接收模块用于在接收到信号时，使所述电源管理芯片停止输出公共电压。
  15. 如权利要求12所述的显示装置，其中，所述控制模块设置于所述电源管理芯片内，所述电源管理芯片用于对公共电压驱动模块的电流进行侦测，并在所述公共电压驱动模块上的电流值大于预设值时，自动停止。
  16. 如权利要求12所述的显示装置，其中，还包括生成单元和寄存器，所述生成单元用于在所述驱动电路进入显示帧中的空白时间段时，生成第一数据，并将所述第一数据存储到寄存器，所述控制模块用于在读取到寄存器内的第一数据时，开始工作；所述生成单元还用于在所述驱动电路进入显示帧中的显示时间段时，生成第二数据，并将所述第二数据存储到寄存器，所述控制模块用于在读取到寄存器内的第二数据时，停止工作。
  17. 如权利要求12所述的显示装置，其中，所述第一数据包括1，所述第二数据包括0。
  18. 如权利要求16所述的显示装置，其中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器与所述控制模块连接，用于将数据传递给控制模块。
  19. 如权利要求16所述的显示装置，其中，所述驱动电路还包括与所述电源管理芯片电连接的时序控制芯片，用于输出时钟信号；所述寄存器设置于所述时序控制芯片，所述寄存器用于将数据传递给电源管理芯片，所述电源管理芯片用于将读取到的寄存器的数据传递给控制模块。
  20. 如权利要求12所述的显示装置，其中，还包括报警模块，所述报警模块电连接所述控制模块，所述控制模块用于在显示帧中的空白时间段，侦测公共电压驱动模块上的电流，所述报警模块用于在所述公共电压驱动模块上的电流值等于预设值时，发出警告。
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