WO2022116284A1 - 显示装置及其驱动方法 - Google Patents

显示装置及其驱动方法 Download PDF

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Publication number
WO2022116284A1
WO2022116284A1 PCT/CN2020/137447 CN2020137447W WO2022116284A1 WO 2022116284 A1 WO2022116284 A1 WO 2022116284A1 CN 2020137447 W CN2020137447 W CN 2020137447W WO 2022116284 A1 WO2022116284 A1 WO 2022116284A1
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WO
WIPO (PCT)
Prior art keywords
real
current
led light
control module
time
Prior art date
Application number
PCT/CN2020/137447
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English (en)
French (fr)
Inventor
李文芳
Original Assignee
Tcl华星光电技术有限公司
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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 US17/255,505 priority Critical patent/US11705055B2/en
Publication of WO2022116284A1 publication Critical patent/WO2022116284A1/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
    • G09G3/3406—Control of illumination source
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • 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
    • G09G3/2007—Display of intermediate tones
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]

Definitions

  • the present application relates to the field of display technology, and in particular, to a display device and a driving method thereof.
  • mini light-emitting diodes Small-LED, Mini Light Emitting Diode
  • Mini-LED Mini Light Emitting Diode
  • mini LED display devices will choose constant voltage drive, and the mini LED will be driven by the preset driving voltage and constant voltage for display, but during the display process, the mini LED will follow the display.
  • the display time increases, heat generation occurs, and because the mini The electrical characteristics of LED lamp beads will lead to an increase in current at high temperature, resulting in the power of the mini LED display device exceeding the standard and affecting the use of the mini LED display device.
  • the present application provides a display device and a driving method thereof, so as to solve the technical problem that the mini LED lamp bead in the existing display device will increase the current at high temperature, resulting in the power exceeding the standard of the display device.
  • the present application provides a display device, comprising:
  • a display panel including at least one LED light board, and the LED light board includes at least one LED;
  • a drive control module connected to the LED light board, and the drive control module drives the LEDs of the LED light board to display;
  • a detection module which is respectively connected with the LED light board and the drive control module;
  • the detection module detects the real-time current flowing through the LED, and the drive control module switches the display mode of the LED light panel according to the real-time current, so as to keep the real-time current at a fixed threshold current within the interval.
  • the display mode of the LED light panel includes a high grayscale normal display mode and a low grayscale cooling display mode
  • the drive control module switches the display mode of the LED light panel according to the magnitude of the real-time current, including:
  • the driving control module drives the LED light panel to display in the low gray-scale cooling display mode
  • the drive control module drives the LED light panel to display in the high-gray-scale normal display mode
  • the first threshold current is greater than or equal to the second threshold current, the first threshold current is less than the maximum value in the fixed threshold current interval, and the second threshold current is less than the minimum value in the fixed threshold current interval value.
  • the detection module includes a detection resistor connected to the LED, the drive control module is connected to both ends of the detection resistor, and the drive control module receives the real-time The real-time voltage generated by the current at both ends of the resistor is detected, and the display mode of the LED light panel is switched according to the magnitude of the real-time voltage.
  • the drive control module receives the real-time voltage generated by the real-time current at both ends of the detection resistor, and switches the display of the LED light panel according to the magnitude of the real-time voltage mode, including:
  • the drive control module drives the LED light panel to display in the low-gray-scale cooling display mode
  • the drive control module drives the LED light panel to display in the high-gray-scale normal display mode
  • the first threshold voltage is greater than or equal to the second threshold voltage, the first threshold voltage matches the first threshold current, and the second threshold voltage matches the second threshold current.
  • the driving control module includes a driving chip and a comparison module respectively connected to the detection resistor and the driving chip; the comparison module compares the real-time voltage with the first voltage The magnitudes of a threshold voltage and a second threshold voltage are transmitted, and the comparison result is transmitted to the driving chip.
  • the detection module further includes an amplifier, the detection resistor is connected to the comparison module through the amplifier, and two ends of the detection resistor are respectively connected to two inputs of the amplifier.
  • the output end of the amplifier is connected to the comparison module.
  • the first threshold voltage is equal to the second threshold voltage
  • the comparison module includes a comparator, and the output end of the comparator is connected to the driving chip, so The first input terminal of the comparator is connected to the output terminal of the amplifier, and the second input terminal of the comparator is input with the first threshold voltage or the second threshold voltage.
  • the present application also provides another display device, comprising:
  • a display panel including at least one LED light board, and the LED light board includes at least one LED;
  • a drive control module connected to the LED light board, and the drive control module drives the LEDs of the LED light board to display;
  • a detection module which is respectively connected with the LED light board and the drive control module;
  • a constant voltage control module connected with the LED light board
  • the detection module detects the real-time current flowing through the LED, and the drive control module switches the display mode of the LED light panel according to the real-time current, so as to keep the real-time current at a fixed threshold current within the interval.
  • the display mode of the LED light panel includes a high grayscale normal display mode and a low grayscale cooling display mode
  • the drive control module switches the display mode of the LED light panel according to the magnitude of the real-time current, including:
  • the driving control module drives the LED light panel to display in the low gray-scale cooling display mode
  • the drive control module drives the LED light panel to display in the high-gray-scale normal display mode
  • the first threshold current is greater than or equal to the second threshold current, the first threshold current is less than the maximum value in the fixed threshold current interval, and the second threshold current is less than the minimum value in the fixed threshold current interval value.
  • the detection module includes a detection resistor connected to the LED, the drive control module is connected to both ends of the detection resistor, and the drive control module receives the real-time The real-time voltage generated by the current at both ends of the resistor is detected, and the display mode of the LED light panel is switched according to the magnitude of the real-time voltage.
  • the drive control module receives the real-time voltage generated by the real-time current at both ends of the detection resistor, and switches the display of the LED light panel according to the magnitude of the real-time voltage mode, including:
  • the drive control module drives the LED light panel to display in the low-gray-scale cooling display mode
  • the drive control module drives the LED light panel to display in the high-gray-scale normal display mode
  • the first threshold voltage is greater than or equal to the second threshold voltage, the first threshold voltage matches the first threshold current, and the second threshold voltage matches the second threshold current.
  • the driving control module includes a driving chip and a comparison module respectively connected to the detection resistor and the driving chip; the comparison module compares the real-time voltage with the first voltage The magnitudes of a threshold voltage and a second threshold voltage are transmitted, and the comparison result is transmitted to the driving chip.
  • the detection module further includes an amplifier, the detection resistor is connected to the comparison module through the amplifier, and two ends of the detection resistor are respectively connected to two inputs of the amplifier.
  • the output end of the amplifier is connected to the comparison module.
  • the first threshold voltage is equal to the second threshold voltage
  • the comparison module includes a comparator, and the output end of the comparator is connected to the driving chip, so The first input terminal of the comparator is connected to the output terminal of the amplifier, and the second input terminal of the comparator is input with the first threshold voltage or the second threshold voltage.
  • the present application also provides a method for driving a display device, the display device comprising:
  • a display panel including at least one LED light board, and the LED light board includes at least one LED;
  • a drive control module connected to the LED light board, and the drive control module drives the LEDs of the LED light board to display;
  • a detection module which is respectively connected with the LED light board and the drive control module;
  • the driving method of the display device includes the following steps:
  • the drive control module switches the display mode of the LED light panel according to the magnitude of the real-time current, so as to keep the real-time current within a fixed threshold current range.
  • the display mode of the LED light panel includes a high grayscale normal display mode and a low grayscale cooling display mode
  • the driving control module switches according to the magnitude of the real-time current
  • the driving control module drives the LED light panel to display in the low gray-scale cooling display mode
  • the drive control module drives the LED light panel to display in the high-gray-scale normal display mode
  • the first threshold current is greater than or equal to the second threshold current, the first threshold current is less than the maximum value in the fixed threshold current interval, and the second threshold current is less than the minimum value in the fixed threshold current interval value.
  • the detection module includes a detection resistor connected to the LED, the driving control module is connected to both ends of the detection resistor, and the driving control module receives the detection resistor.
  • the real-time voltage generated by the real-time current at both ends of the detection resistor, and the display mode of the LED light panel is switched according to the magnitude of the real-time voltage;
  • the drive control module receives the real-time voltage generated by the real-time current at both ends of the detection resistor, and switches the display mode of the LED light panel according to the magnitude of the real-time voltage, including:
  • the drive control module drives the LED light panel to display in the low-gray-scale cooling display mode
  • the drive control module drives the LED light panel to display in the high-gray-scale normal display mode
  • the first threshold voltage is greater than or equal to the second threshold voltage, the first threshold voltage matches the first threshold current, and the second threshold voltage matches the second threshold current.
  • the present application detects the real-time current flowing through the LED through the detection module, and switches the display mode of the LED light panel according to the real-time current through the drive control module, so that the The real-time current is kept within a fixed threshold current range, so as to avoid excessive real-time current flowing through the LED due to high temperature, which will cause the power of the display device to exceed the standard.
  • FIG. 1 is a first structural schematic diagram of a display device provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a second structure of a display device provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a third structure of a display device provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of a method for driving a display device provided by an embodiment of the present application.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation.
  • the present application proposes a display device based on the above technical problems, and the specific solution is as follows:
  • the display device includes:
  • the display panel 100 includes at least one LED light board 110, and the LED light board 110 includes at least one LED (not shown in the figure);
  • a drive control module 200 connected to the LED light panel 110, and the drive control module 200 drives the LEDs of the LED light panel 110 to display;
  • the detection module 300 is respectively connected with the LED lamp panel 110 and the drive control module 200;
  • the detection module 300 detects the real-time current flowing through the LED, and the drive control module 200 switches the display mode of the LED light panel 110 according to the real-time current, so as to keep the real-time current at a constant within the fixed threshold current range.
  • the display device may further include a constant voltage control module connected to the LED lamp panel 110, and the constant voltage control module is used to make the LED lamp panel 110 operate at a set constant voltage.
  • the constant voltage may be set to 24V
  • the LED light panel 110 may include a plurality of LEDs arranged in an array
  • the detection module 300 may be connected to the output end of the LEDs, It can also be connected to the driving circuit that drives the LED, so as to detect the real-time current flowing through the LED.
  • the fixed threshold current range can be set according to actual needs, which will not be repeated here.
  • the real-time current flowing through the LED is detected by the detection module 300, and the display mode of the LED light panel 110 is switched by the drive control module 200 according to the size of the real-time current, so as to keep the real-time current at a constant Within the fixed threshold current range, it is avoided that the power of the display device exceeds the standard due to excessive real-time current flowing through the LED caused by high temperature.
  • the display modes of the LED light panel 110 include a high grayscale normal display mode and a low grayscale cooling display mode:
  • the drive control module 200 switches the display mode of the LED light panel 110 according to the magnitude of the real-time current, including:
  • the driving control module 200 drives the LED light panel 110 to display in the low gray-scale cooling display mode
  • the driving control module 200 drives the LED light panel 110 to display in the high grayscale normal display mode
  • the first threshold current is greater than or equal to the second threshold current, the first threshold current is less than the maximum value in the fixed threshold current interval, and the second threshold current is less than the minimum value in the fixed threshold current interval value.
  • the display mode of the LED light panel 110 includes a high grayscale normal display mode and a low grayscale cooling display mode
  • the high grayscale normal display mode is the normal display mode of the LED light panel 110.
  • the driving control module 200 drives the LED light board 110 so that the The high grayscale conventional display mode is displayed; thus the normal display mode is restored.
  • the high grayscale conventional display mode can be displayed in 64 grayscales
  • the low grayscale cooling display mode can be displayed in 60 grayscales. stage is displayed.
  • the first threshold current is greater than or equal to the second threshold current
  • the first threshold current is less than the maximum value in the fixed threshold current interval
  • the second threshold current is less than the The minimum value in the fixed threshold current interval
  • the minimum value, the operation of switching the display mode of the LED light panel 110 can be taken before the real-time current is less than the minimum value in the fixed threshold current interval, so as to prevent the display mode of the LED light panel 110 from being kept at the low level In the grayscale cooling display mode, the display quality is reduced.
  • the detection module 300 includes a detection resistor 310 connected to the LED, the drive control module 200 is connected to both ends of the detection resistor 310 , and the drive control module 200 receives the real-time voltage generated by the real-time current at both ends of the detection resistor 310, and switches the display mode of the LED light board 110 according to the real-time voltage;
  • the LED is connected, and the other end of the detection resistor 310 can be connected to a voltage stabilizing element or a voltage stabilizing terminal.
  • the voltage of the voltage stabilizing element or the voltage stabilizing terminal is 30V.
  • the magnitude of the real-time current can be determined by detecting the real-time voltage at both ends of the detection resistor 310. Therefore, the drive control module 200 can switch the real-time current according to the magnitude of the real-time voltage.
  • the display mode of the LED light panel 110 .
  • the drive control module 200 receives the real-time voltage generated by the real-time current at both ends of the detection resistor 310, and switches the display mode of the LED light panel 110 according to the magnitude of the real-time voltage, including :
  • the driving control module 200 drives the LED light panel 110 to display in the low grayscale cooling display mode ;
  • the driving control module 200 drives the LED light panel 110 to display in the high gray-scale normal display mode ;
  • the first threshold voltage is greater than or equal to the second threshold voltage, the first threshold voltage matches the first threshold current, and the second threshold voltage matches the second threshold current.
  • the magnitude of the corresponding real-time current can be obtained by detecting the magnitude of the real-time voltage. Therefore, the magnitude of the first threshold voltage can be correspondingly set according to the magnitude of the first threshold current in the foregoing embodiment, thereby It can be obtained that when the real-time voltage is greater than the first threshold voltage, the corresponding real-time current is greater than the first threshold current, and the drive control module 200 drives the LED light panel 110 to display the temperature at the low gray scale Mode display, which reduces the output power, and also reduces the real-time current through the LED, so that the real-time current is kept within a fixed threshold current range, and the temperature of the LED can be prevented from continuously increasing, and a certain cooling effect can be achieved.
  • the drive control module 200 drives the LED
  • the light panel 110 is displayed in the high grayscale normal display mode, so as to restore the normal display mode.
  • the driving control module 200 includes a driving chip 210 and a comparison module 220 respectively connected to the detection resistor 310 and the driving chip 210 ; the comparison module 220 compares the The real-time voltage is the magnitude of the first threshold voltage and the second threshold voltage, and the comparison result is transmitted to the driver chip 210; it can be understood that the function of the comparison module 220 can be realized through process control, or can be Realized by logic circuit elements.
  • the detection module 300 further includes an amplifier 320 , the detection resistor 310 is connected to the comparison module 220 through the amplifier 320 , and two ends of the detection resistor 310 are respectively connected to the comparison module 220 .
  • the two input ends of the amplifier 320 are connected, and the output end of the amplifier 320 is connected to the comparison module 220; it can be understood that, in the actual detection process, in order to ensure the detection sensitivity, the detection resistor 310 will use When comparing resistors with small resistance values, the detection module 300 uses the amplified real-time voltage output by the amplifier 320 to facilitate subsequent comparison by the comparison module 220 .
  • the comparison module 220 includes a comparator 221 , and the output end of the comparator 221 is connected to the driver chip.
  • the first input terminal 2211 of the comparator 221 is connected to the output terminal of the amplifier 320, and the second input terminal 2212 of the comparator 221 is input with the first threshold voltage or the second threshold voltage
  • the first input terminal 2211 of the comparator 221 is the "+" input terminal
  • the second input terminal 2212 of the comparator 221 is the "-" input terminal
  • the amplifier 320 outputs the amplified
  • the corresponding second input terminal 2212 of the comparator 221 also inputs the same multiple of the first threshold voltage or the second threshold voltage, when the real-time voltage is greater than the first threshold voltage Or at the second threshold voltage, the comparator 221 outputs a high level to the driving chip 210, and the driving chip 210 drives the LED lamp panel 110 to cool
  • the present application also provides a method for driving a display device, the display device comprising:
  • the display panel 100 includes at least one LED light board 110, and the LED light board 110 includes at least one LED;
  • a driving control module 200 connected to the LED light board 110, and the driving control module 200 drives the LEDs of the LED light board 110 to display;
  • the detection module 300 is respectively connected with the LED lamp panel 110 and the drive control module 200;
  • the driving method of the display device includes the following steps:
  • the drive control module 200 switches the display mode of the LED light panel 110 according to the magnitude of the real-time current, so that the real-time current is kept within a fixed threshold current range.
  • the real-time current flowing through the LED is detected by the detection module 300, and the display mode of the LED light panel 110 is switched by the drive control module 200 according to the size of the real-time current, so that the real-time current can be changed.
  • the current is kept within a fixed threshold current range, so as to avoid excessive real-time current flowing through the LED due to high temperature, which may cause the power of the display device to exceed the standard.
  • the display modes of the LED light panel 110 include a high grayscale normal display mode and a low grayscale cooling display mode, and the drive control module 200 switches the LED light panel 110 according to the magnitude of the real-time current.
  • the steps of the display mode include:
  • the driving control module 200 drives the LED light panel 110 to display in the low gray-scale cooling display mode
  • the driving control module 200 drives the LED light panel 110 to display in the high grayscale normal display mode
  • the first threshold current is greater than or equal to the second threshold current, the first threshold current is less than the maximum value in the fixed threshold current interval, and the second threshold current is less than the minimum value in the fixed threshold current interval value.
  • the display mode of the LED light panel 110 includes a high grayscale normal display mode and a low grayscale cooling display mode
  • the high grayscale normal display mode is the normal display mode of the LED light panel 110.
  • the driving control module 200 drives the LED light board 110 so that the The high grayscale conventional display mode is displayed; thus the normal display mode is restored.
  • the high grayscale conventional display mode can be displayed in 64 grayscales
  • the low grayscale cooling display mode can be displayed in 60 grayscales. stage is displayed.
  • the detection module 300 includes a detection resistor 310 connected to the LED, the drive control module 200 is connected to both ends of the detection resistor 310 , and the drive control module 200 receives the real-time current.
  • the real-time voltage generated at both ends of the resistor 310 is detected, and the display mode of the LED light panel 110 is switched according to the magnitude of the real-time voltage;
  • the drive control module 200 receives the real-time voltage generated by the real-time current at both ends of the detection resistor 310, and switches the display mode of the LED light panel 110 according to the magnitude of the real-time voltage, including:
  • the driving control module 200 drives the LED light panel 110 to display in the low grayscale cooling display mode ;
  • the driving control module 200 drives the LED light panel 110 to display in the high-gray-scale normal display mode ;
  • the first threshold voltage is greater than or equal to the second threshold voltage, the first threshold voltage matches the first threshold current, and the second threshold voltage matches the second threshold current.
  • the magnitude of the corresponding real-time current can be obtained by detecting the magnitude of the real-time voltage. Therefore, the magnitude of the first threshold voltage can be correspondingly set according to the magnitude of the first threshold current in the foregoing embodiment, thereby It can be obtained that when the real-time voltage is greater than the first threshold voltage, the corresponding real-time current is greater than the first threshold current, and the drive control module 200 drives the LED light panel 110 to display the temperature at the low gray scale Mode display, which reduces the output power, and also reduces the real-time current through the LED, so that the real-time current is kept within a fixed threshold current range, and the temperature of the LED can be prevented from continuously increasing, and a certain cooling effect can be achieved.
  • the drive control module 200 drives the LED
  • the light panel 110 is displayed in the high grayscale normal display mode, so as to restore the normal display mode.
  • the detection module 300 detects the real-time current flowing through the LED, and the drive control module 200 switches the display mode of the LED light panel 110 according to the real-time current, so as to keep the real-time current at Within a fixed threshold current range, it is avoided that the power of the display device exceeds the standard due to the excessive real-time current flowing through the LED caused by high temperature.

Abstract

一种显示装置及其驱动方法，显示装置包括显示面板（100）、驱动控制模块（200）和检测模块（300），显示面板（100）包括至少一LED灯板（110），LED灯板（110）至少包括一LED，驱动控制模块（200）与LED灯板（110）连接，驱动控制模块（200）驱动LED灯板（110）的LED进行显示，检测模块（300）分别与LED灯板（110）和驱动控制模块（200）连接。检测模块（300）检测流经LED的电流，驱动控制模块（200）根据实时电流的大小切换LED灯板（110）的显示模式，以使实时电流保持在一固定阈值电流区间内。

Description

显示装置及其驱动方法 技术领域
本申请涉及显示技术领域，尤其涉及一种显示装置及其驱动方法。
 背景技术
近年来，迷你发光二极管(Mini-LED，Mini Light Emitting Diode)因其可实现超薄和多分区功能，在显示装置的背光源中得到了广泛运用。
目前，为了满足常温下的亮度要求和功率度要求，很多mini LED显示装置会选择恒压驱动，通过提前设置好的驱动电压恒压驱动mini LED进行显示，但在显示过程中，mini LED会随着显示时间增加而产生发热现象，并且，由于mini LED灯珠在高温下会导致电流增加的电学特性，导致mini LED显示装置的功率超标，影响mini LED显示装置的使用。
 技术问题
本申请提供一种显示装置及其驱动方法，以解决现有显示装置中mini LED灯珠在高温下会导致电流增加，导致显示装置的功率超标的技术问题。
 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：
本申请提供了一种显示装置，包括：
显示面板，包括至少一LED灯板，所述LED灯板至少包括一LED；
驱动控制模块，与所述LED灯板连接，所述驱动控制模块驱动所述LED灯板的所述LED进行显示；
检测模块，分别与所述LED灯板和所述驱动控制模块连接；
其中，所述检测模块检测流经所述LED的实时电流，所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
在本申请实施例所提供的显示装置中，所述LED灯板的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式；
所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，包括：
当所述实时电流大于第一阈值电流时，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
当所述实时电流小于第二阈值电流时，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
在本申请实施例所提供的显示装置中，所述检测模块包括与所述LED连接的检测电阻，所述驱动控制模块与所述检测电阻的两端连接，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式。
在本申请实施例所提供的显示装置中，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式，包括：
当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
在本申请实施例所提供的显示装置中，所述驱动控制模块包括驱动芯片以及分别与所述检测电阻和所述驱动芯片连接的比较模块；所述比较模块比较所述实时电压与所述第一阈值电压和第二阈值电压的大小，并将比较结果传输给所述驱动芯片。
在本申请实施例所提供的显示装置中，所述检测模块还包括放大器，所述检测电阻通过所述放大器与所述比较模块连接，所述检测电阻的两端分别与所述放大器的两输入端连接，所述放大器的输出端与所述比较模块连接。
在本申请实施例所提供的显示装置中，所述第一阈值电压等于所述第二阈值电压，所述比较模块包括一比较器，所述比较器的输出端与所述驱动芯片连接，所述比较器的第一输入端与所述放大器的输出端连接，所述比较器的第二输入端输入有所述第一阈值电压或所述第二阈值电压。
本申请还提供另一种显示装置，包括：
显示面板，包括至少一LED灯板，所述LED灯板至少包括一LED；
驱动控制模块，与所述LED灯板连接，所述驱动控制模块驱动所述LED灯板的所述LED进行显示；
检测模块，分别与所述LED灯板和所述驱动控制模块连接；
恒压控制模块，与所述LED灯板连接；
其中，所述检测模块检测流经所述LED的实时电流，所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
在本申请实施例所提供的显示装置中，所述LED灯板的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式；
所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，包括：
当所述实时电流大于第一阈值电流时，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
当所述实时电流小于第二阈值电流时，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
在本申请实施例所提供的显示装置中，所述检测模块包括与所述LED连接的检测电阻，所述驱动控制模块与所述检测电阻的两端连接，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式。
在本申请实施例所提供的显示装置中，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式，包括：
当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
在本申请实施例所提供的显示装置中，所述驱动控制模块包括驱动芯片以及分别与所述检测电阻和所述驱动芯片连接的比较模块；所述比较模块比较所述实时电压与所述第一阈值电压和第二阈值电压的大小，并将比较结果传输给所述驱动芯片。
在本申请实施例所提供的显示装置中，所述检测模块还包括放大器，所述检测电阻通过所述放大器与所述比较模块连接，所述检测电阻的两端分别与所述放大器的两输入端连接，所述放大器的输出端与所述比较模块连接。
在本申请实施例所提供的显示装置中，所述第一阈值电压等于所述第二阈值电压，所述比较模块包括一比较器，所述比较器的输出端与所述驱动芯片连接，所述比较器的第一输入端与所述放大器的输出端连接，所述比较器的第二输入端输入有所述第一阈值电压或所述第二阈值电压。
本申请还提供一种显示装置的驱动方法，所述显示装置包括：
显示面板，包括至少一LED灯板，所述LED灯板至少包括一LED；
驱动控制模块，与所述LED灯板连接，所述驱动控制模块驱动所述LED灯板的所述LED进行显示；
检测模块，分别与所述LED灯板和所述驱动控制模块连接；
所述显示装置的驱动方法包括以下步骤：
通过所述检测模块检测流经所述LED的实时电流；
所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
在本申请实施例所提供显示装置的驱动方法中，所述LED灯板的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式，所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式的步骤，包括：
当所述实时电流大于第一阈值电流时，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
当所述实时电流小于第二阈值电流时，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
在本申请实施例所提供显示装置的驱动方法中，所述检测模块包括与所述LED连接的检测电阻，所述驱动控制模块与所述检测电阻的两端连接，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式；
所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式，包括：
当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
 有益效果
本申请的有益效果为：本申请通过检测模块检测流经所述LED的实时电流，并通过所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，以使所述实时电流保持在一固定阈值电流区间内，避免了由于高温引起流经所述LED的实时电流过大而导致显示装置的功率超标。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例所提供显示装置的第一种结构示意图；
图2为本申请实施例所提供显示装置的第二种结构示意图；
图3为本申请实施例所提供显示装置的第三种结构示意图；及
图4为本申请实施例所提供显示装置的驱动方法流程框图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
在本申请的描述中，需要理解的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示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一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
现结合具体实施例对本申请的技术方案进行描述。
目前，为了满足常温下的亮度要求和功率度要求，很多mini LED显示装置会选择恒压驱动，通过提前设置好的驱动电压恒压驱动mini LED进行显示，但在显示过程中，mini LED会随着显示时间增加而产生发热现象，并且，由于mini LED灯珠在高温下会导致电流增加的电学特性，导致mini LED显示装置的功率超标，影响mini LED显示装置的使用。因此，本申请基于上述技术问题提出了一种显示装置，具体方案如下：
请参阅图1，所述显示装置包括：
显示面板100，包括至少一LED灯板110，所述LED灯板110至少包括一LED（图中未出示）；
驱动控制模块200，与所述LED灯板110连接，所述驱动控制模块200驱动所述LED灯板110的所述LED进行显示；
检测模块300，分别与所述LED灯板110和所述驱动控制模块200连接；
其中，所述检测模块300检测流经所述LED的实时电流，所述驱动控制模块200根据所述实时电流的大小切换所述LED灯板110的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
可以理解的是，所述显示装置还可以包括一与LED灯板110连接的恒压控制模块，所述恒压控制模块用于使所述LED灯板110在一设定好的恒定电压下进行显示，具体的，所述恒定电压可以设置为24V，所述LED灯板110可以包括多个呈阵列排布的LED，具体的，所述检测模块300可以是与所述LED的输出端连接，也可以是与驱动所述LED的驱动电路连接，从而检测流经所述LED的实时电流，此外，所述固定阈值电流区间可以根据实际需要进行设定，在此不再赘述，本实施例中，通过检测模块300检测流经所述LED的实时电流，并通过所述驱动控制模块200根据所述实时电流的大小切换所述LED灯板110的显示模式，以使所述实时电流保持在一固定阈值电流区间内，避免了由于高温引起流经所述LED的实时电流过大而导致显示装置的功率超标。
在一实施例中，如图1所示，所述LED灯板110的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式：
所述驱动控制模块200根据所述实时电流的大小切换所述LED灯板110的显示模式，包括：
当所述实时电流大于第一阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示；
当所述实时电流小于第二阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示；
所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
可以理解的是，所述LED灯板110的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式，所述高灰阶常规显示模式为所述LED灯板110的常规显示模式，当所述实时电流大于第一阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示，此时，通过将所述LED灯板110的显示模式切换至所述低灰阶降温显示模式进行显示，降低了输出功率，也降低了通过所述LED的实时电流，使所述实时电流保持在一固定阈值电流区间内，也可以避免所述LED的温度持续增加，达到一定的降温效果，显然，在降温达到一定的效果时，也即是当所述实时电流小于第二阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示；从而恢复正常的显示模式，具体的，所述高灰阶常规显示模式可以是以64灰阶进行显示，所述低灰阶降温显示模式可以是以60灰阶进行显示。
承上，本实施例中，所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值，可以理解的是，所述第一阈值电流小于所述固定阈值电流区间中的最大值，可以在所述实时电流大于所述固定阈值电流区间中的最大值之前，采取切换所述LED灯板110显示模式的操作降低所述LED的温度，也可以避免所述LED的温度持续增加，同理，所述第二阈值电流小于所述固定阈值电流区间中的最小值，可以在所述实时电流小于所述固定阈值电流区间中的最小值之前，采取切换所述LED灯板110显示模式的操作，避免所述LED灯板110显示模式一直保持在所述低灰阶降温显示模式中而降低了显示品质。
在一实施例中，如图2所示，所述检测模块300包括与所述LED连接的检测电阻310，所述驱动控制模块200与所述检测电阻310的两端连接，所述驱动控制模块200接收所述实时电流在所述检测电阻310两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板110的显示模式；可以理解的是，所述检测电阻310一端与所述LED连接，所述检测电阻310的另一端可以连接一稳压元件或一稳压端，所述稳压元件或稳压端的电压为30V，当所述实时电流增大时，所述检测电阻310两端的实时电压增加，显然，可以通过检测所述检测电阻310两端的实时电压来判断所述实时电流的大小，因此，所述驱动控制模块200可以根据所述实时电压的大小切换所述LED灯板110的显示模式。
承上，具体的，所述驱动控制模块200接收所述实时电流在所述检测电阻310两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板110的显示模式，包括：
当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示；
当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示；
其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
可以理解的是，可以通过检测所述实时电压的大小得到对应的所述实时电流的大小，因此，可以根据前述实施例中所述第一阈值电流的大小对应设置第一阈值电压的大小，从而可以得到，当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示，降低了输出功率，也降低了通过所述LED的实时电流，使所述实时电流保持在一固定阈值电流区间内，也可以避免所述LED的温度持续增加，达到一定的降温效果，显然，在降温达到一定的效果时，也即是当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示，从而恢复正常的显示模式。
在一实施例中，如图2所示，所述驱动控制模块200包括驱动芯片210以及分别与所述检测电阻310和所述驱动芯片210连接的比较模块220；所述比较模块220比较所述实时电压与所述第一阈值电压和第二阈值电压的大小，并将比较结果传输给所述驱动芯片210；可以理解的是，所述比较模块220的功能可以是通过程控实现，也可以是通过逻辑电路元件实现。
在一实施例中，如图2所示，所述检测模块300还包括放大器320，所述检测电阻310通过所述放大器320与所述比较模块220连接，所述检测电阻310的两端分别与所述放大器320的两输入端连接，所述放大器320的输出端与所述比较模块220连接；可以理解的是，在实际检测过程中，为保证检测的灵敏度，所述检测电阻310的会采用比较小阻值的电阻，所述检测模块300中采用所述放大器320后输出的放大后的所述实时电压，便于后续所述比较模块220进行对比。
在一实施例中，如图3所示，所述第一阈值电压等于所述第二阈值电压，所述比较模块220包括一比较器221，所述比较器221的输出端与所述驱动芯片210连接，所述比较器221的第一输入端2211与所述放大器320的输出端连接，所述比较器221的第二输入端2212输入有所述第一阈值电压或所述第二阈值电压；可以理解的是，所述比较器221的第一输入端2211为“+”输入端，所述比较器221的第二输入端2212为“-”输入端，所述放大器320输出放大后的所述实时电压后，对应的所述比较器221的第二输入端2212也输入相同倍数的所述第一阈值电压或所述第二阈值电压，当所述实时电压大于所述第一阈值电压或所述第二阈值电压时，所述比较器221向所述驱动芯片210输出高电平，所述驱动芯片210根据所述高电平驱动所述LED灯板110以所述低灰阶降温显示模式进行显示，当所述实时电压小于所述第一阈值电压或所述第二阈值电压时，所述比较器221向所述驱动芯片210输出低电平，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示。
本申请还提供一种显示装置的驱动方法，所述显示装置包括：
显示面板100，包括至少一LED灯板110，所述LED灯板110至少包括一LED；
驱动控制模块200，与所述LED灯板110连接，所述驱动控制模块200驱动所述LED灯板110的所述LED进行显示；
检测模块300，分别与所述LED灯板110和所述驱动控制模块200连接；
如图4所示，所述显示装置的驱动方法包括以下步骤：
S100：通过所述检测模块300检测流经所述LED的实时电流；
S200：所述驱动控制模块200根据所述实时电流的大小切换所述LED灯板110的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
可以理解的是，通过检测模块300检测流经所述LED的实时电流，并通过所述驱动控制模块200根据所述实时电流的大小切换所述LED灯板110的显示模式，以使所述实时电流保持在一固定阈值电流区间内，避免了由于高温引起流经所述LED的实时电流过大而导致显示装置的功率超标。
在一实施例中，所述LED灯板110的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式，所述驱动控制模块200根据所述实时电流的大小切换所述LED灯板110的显示模式的步骤，包括：
当所述实时电流大于第一阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示；
当所述实时电流小于第二阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示；
所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
可以理解的是，所述LED灯板110的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式，所述高灰阶常规显示模式为所述LED灯板110的常规显示模式，当所述实时电流大于第一阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示，此时，通过将所述LED灯板110的显示模式切换至所述低灰阶降温显示模式进行显示，降低了输出功率，也降低了通过所述LED的实时电流，使所述实时电流保持在一固定阈值电流区间内，也可以避免所述LED的温度持续增加，达到一定的降温效果，显然，在降温达到一定的效果时，也即是当所述实时电流小于第二阈值电流时，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示；从而恢复正常的显示模式，具体的，所述高灰阶常规显示模式可以是以64灰阶进行显示，所述低灰阶降温显示模式可以是以60灰阶进行显示。
在一实施例中，所述检测模块300包括与所述LED连接的检测电阻310，所述驱动控制模块200与所述检测电阻310的两端连接，所述驱动控制模块200接收所述实时电流在所述检测电阻310两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板110的显示模式；
所述驱动控制模块200接收所述实时电流在所述检测电阻310两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板110的显示模式，包括：
当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示；
当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示；
其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
可以理解的是，可以通过检测所述实时电压的大小得到对应的所述实时电流的大小，因此，可以根据前述实施例中所述第一阈值电流的大小对应设置第一阈值电压的大小，从而可以得到，当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述低灰阶降温显示模式进行显示，降低了输出功率，也降低了通过所述LED的实时电流，使所述实时电流保持在一固定阈值电流区间内，也可以避免所述LED的温度持续增加，达到一定的降温效果，显然，在降温达到一定的效果时，也即是当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块200驱动所述LED灯板110以所述高灰阶常规显示模式进行显示，从而恢复正常的显示模式。
本申请通过检测模块300检测流经所述LED的实时电流，并通过所述驱动控制模块200根据所述实时电流的大小切换所述LED灯板110的显示模式，以使所述实时电流保持在一固定阈值电流区间内，避免了由于高温引起流经所述LED的实时电流过大而导致显示装置的功率超标。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (17)

  1. 一种显示装置，其包括：
    显示面板，包括至少一LED灯板，所述LED灯板至少包括一LED；
    驱动控制模块，与所述LED灯板连接，所述驱动控制模块驱动所述LED灯板的所述LED进行显示；
    检测模块，分别与所述LED灯板和所述驱动控制模块连接；
    其中，所述检测模块检测流经所述LED的实时电流，所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
  2. 根据权利要求1所述的显示装置，其中，所述LED灯板的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式；
    所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，包括：
    当所述实时电流大于第一阈值电流时，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
    当所述实时电流小于第二阈值电流时，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
    所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
  3. 根据权利要求2所述的显示装置，其中，所述检测模块包括与所述LED连接的检测电阻，所述驱动控制模块与所述检测电阻的两端连接，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式。
  4. 根据权利要求3所述的显示装置，其中，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式，包括：
    当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
    当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
    其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
  5. 根据权利要求4所述的显示装置，其中，所述驱动控制模块包括驱动芯片以及分别与所述检测电阻和所述驱动芯片连接的比较模块；所述比较模块比较所述实时电压与所述第一阈值电压和第二阈值电压的大小，并将比较结果传输给所述驱动芯片。
  6. 根据权利要求4所述的显示装置，其中，所述检测模块还包括放大器，所述检测电阻通过所述放大器与所述比较模块连接，所述检测电阻的两端分别与所述放大器的两输入端连接，所述放大器的输出端与所述比较模块连接。
  7. 根据权利要求6所述的显示装置，其中，所述第一阈值电压等于所述第二阈值电压，所述比较模块包括一比较器，所述比较器的输出端与所述驱动芯片连接，所述比较器的第一输入端与所述放大器的输出端连接，所述比较器的第二输入端输入有所述第一阈值电压或所述第二阈值电压。
  8. 一种显示装置，其包括：
    显示面板，包括至少一LED灯板，所述LED灯板至少包括一LED；
    驱动控制模块，与所述LED灯板连接，所述驱动控制模块驱动所述LED灯板的所述LED进行显示；
    检测模块，分别与所述LED灯板和所述驱动控制模块连接；
    恒压控制模块，与所述LED灯板连接；
    其中，所述检测模块检测流经所述LED的实时电流，所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
  9. 根据权利要求8所述的显示装置，其中，所述LED灯板的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式；
    所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，包括：
    当所述实时电流大于第一阈值电流时，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
    当所述实时电流小于第二阈值电流时，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
    所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
  10. 根据权利要求9所述的显示装置，其中，所述检测模块包括与所述LED连接的检测电阻，所述驱动控制模块与所述检测电阻的两端连接，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式。
  11. 根据权利要求10所述的显示装置，其中，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式，包括：
    当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
    当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
    其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
  12. 根据权利要求11所述的显示装置，其中，所述驱动控制模块包括驱动芯片以及分别与所述检测电阻和所述驱动芯片连接的比较模块；所述比较模块比较所述实时电压与所述第一阈值电压和第二阈值电压的大小，并将比较结果传输给所述驱动芯片。
  13. 根据权利要求11所述的显示装置，其中，所述检测模块还包括放大器，所述检测电阻通过所述放大器与所述比较模块连接，所述检测电阻的两端分别与所述放大器的两输入端连接，所述放大器的输出端与所述比较模块连接。
  14. 根据权利要求13所述的显示装置，其中，所述第一阈值电压等于所述第二阈值电压，所述比较模块包括一比较器，所述比较器的输出端与所述驱动芯片连接，所述比较器的第一输入端与所述放大器的输出端连接，所述比较器的第二输入端输入有所述第一阈值电压或所述第二阈值电压。
  15. 一种显示装置的驱动方法，所述显示装置包括：
    显示面板，包括至少一LED灯板，所述LED灯板至少包括一LED；
    驱动控制模块，与所述LED灯板连接，所述驱动控制模块驱动所述LED灯板的所述LED进行显示；
    检测模块，分别与所述LED灯板和所述驱动控制模块连接；
    所述显示装置的驱动方法包括以下步骤：
    通过所述检测模块检测流经所述LED的实时电流；
    所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式，以使所述实时电流保持在一固定阈值电流区间内。
  16. 根据权利要求15所述显示装置的驱动方法，其中，所述LED灯板的显示模式包括高灰阶常规显示模式和低灰阶降温显示模式，所述驱动控制模块根据所述实时电流的大小切换所述LED灯板的显示模式的步骤，包括：
    当所述实时电流大于第一阈值电流时，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
    当所述实时电流小于第二阈值电流时，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
    所述第一阈值电流大于或等于所述第二阈值电流，所述第一阈值电流小于所述固定阈值电流区间中的最大值，所述第二阈值电流小于所述固定阈值电流区间中的最小值。
  17. 根据权利要求16所述显示装置的驱动方法，其中，所述检测模块包括与所述LED连接的检测电阻，所述驱动控制模块与所述检测电阻的两端连接，所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式；
    所述驱动控制模块接收所述实时电流在所述检测电阻两端产生的实时电压，并根据所述实时电压的大小切换所述LED灯板的显示模式，包括：
    当所述实时电压大于第一阈值电压时，对应的所述实时电流大于所述第一阈值电流，所述驱动控制模块驱动所述LED灯板以所述低灰阶降温显示模式进行显示；
    当所述实时电压小于第二阈值电压时，对应的所述实时电流小于所述第二阈值电流，所述驱动控制模块驱动所述LED灯板以所述高灰阶常规显示模式进行显示；
    其中，所述第一阈值电压大于或等于所述第二阈值电压，所述第一阈值电压与所述第一阈值电流相匹配，所述第二阈值电压与所述第二阈值电流相匹配。
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