WO2020113677A1 - Display panel driving device - Google Patents

Display panel driving device Download PDF

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Publication number
WO2020113677A1
WO2020113677A1 PCT/CN2018/121857 CN2018121857W WO2020113677A1 WO 2020113677 A1 WO2020113677 A1 WO 2020113677A1 CN 2018121857 W CN2018121857 W CN 2018121857W WO 2020113677 A1 WO2020113677 A1 WO 2020113677A1
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WO
WIPO (PCT)
Prior art keywords
resistor
electrically connected
power supply
voltage
supply voltage
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Application number
PCT/CN2018/121857
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French (fr)
Chinese (zh)
Inventor
肖剑锋
Original Assignee
深圳市华星光电半导体显示技术有限公司
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Publication of WO2020113677A1 publication Critical patent/WO2020113677A1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load

Definitions

  • the present invention relates to the field of display technology, and in particular to a display panel driving device.
  • LCD liquid crystal displays
  • other flat display devices have been widely used in mobile phones, TVs, and individuals due to their advantages of high image quality, power saving, thin body, and wide application range.
  • Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream in display devices.
  • liquid crystal display devices which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates.
  • the liquid crystal molecules can be controlled to change the direction by energizing or not, and the light of the backlight module Refracted to produce a picture.
  • the liquid crystal display panel also needs to be driven by an external driving device.
  • the external driving device generally includes: a power supply 100 and a motherboard 200, the power supply 100 is electrically connected to the motherboard 200, and the motherboard 200
  • the display panel 300 is electrically connected.
  • the power supply 100 is generally used to provide a power supply voltage to the motherboard 200.
  • the motherboard 200 is used to provide the display panel 300 with a voltage that drives the display panel 300 to work.
  • the output voltage of the power supply for the liquid crystal display device mainly includes two types of 24V and 12V, and the existing main board generally has a definite working power supply, generally 24V or 12V, that is to say, in a
  • the type of the main board of the liquid crystal display device has also been determined. It must be the same as the working voltage and the output voltage of the power supply to ensure that the main board can work smoothly.
  • the main board of the liquid crystal display device cannot be used with power supplies of different output voltages in the mix and match, and can only match the power supplies of the same specification. The compatibility of the power supplies of different output voltages is not good, resulting in limitations in the application of the main board and cost control Also increased accordingly.
  • the object of the present invention is to provide a display panel driving device, which can expand the application range of the motherboard and reduce the cost of product management and control.
  • the present invention provides a display panel driving device, which includes a power conversion circuit and a motherboard electrically connected to the power conversion circuit;
  • the power conversion circuit includes a detection control module and a first output module and a second output module electrically connected to the detection control module;
  • the detection control module is used to receive a power supply voltage, generate a control signal of a first potential when the voltage value of the power supply voltage is a first voltage value, and generate a difference when the voltage value of the power supply voltage is a second voltage value A control signal of a second potential at a first potential, the first voltage value is greater than the second voltage value;
  • the first output module is used to receive a power supply voltage and a control signal.
  • the control signal is at a first potential
  • the power supply voltage is stepped down, and the stepped-down power supply voltage is output to the main board when the control
  • the signal is the second potential, stop outputting voltage to the motherboard;
  • the second output module is used to receive the power supply voltage and the control signal. When the control signal is at the second potential, the power supply voltage is output to the main board, and when the control signal is at the first potential, the output voltage is stopped to the main board.
  • the detection control module includes: a first resistor, a second resistor, a third resistor, and a first transistor;
  • the first end of the first resistor receives the power supply voltage, and the second end is electrically connected to the first end of the second resistor;
  • the second end of the second resistor is grounded
  • the first end of the third resistor is electrically connected to the first end of the first resistor, and the second end is electrically connected to the collector of the first transistor and outputs a control signal;
  • the base of the first triode is electrically connected to the second end of the first resistor, and the emitter is grounded.
  • the first output module includes: a fourth resistor, a fifth resistor, a first MOS tube and a buck unit;
  • the first end of the fourth resistor receives the power supply voltage, and the second end is electrically connected to the first end of the fifth resistor;
  • the second end of the fifth resistor receives the control signal
  • the gate of the first MOS tube is electrically connected to the first end of the fifth resistor, the source is electrically connected to the first end of the fourth resistor, and the drain is electrically connected to the input end of the step-down unit;
  • the output end of the step-down unit is electrically connected to the main board.
  • the first output module further includes a first capacitor and a second capacitor
  • the first end of the first capacitor is electrically connected to the first end of the fourth resistor, and the second end is grounded;
  • the first end of the second capacitor is electrically connected to the drain of the first MOS tube, and the second end is grounded.
  • the second output module includes: a sixth resistor, a seventh resistor, an eighth resistor, a second MOS tube, a second transistor, a third transistor and a diode;
  • the first end of the sixth resistor receives the power supply voltage, and the second end is electrically connected to the first end of the seventh resistor;
  • the second end of the seventh resistor is electrically connected to the collector of the second triode
  • the first end of the eighth resistor is electrically connected to the first end of the sixth resistor, and the second end is electrically connected to the collector of the third transistor;
  • the gate of the second MOS tube is electrically connected to the first end of the seventh resistor, the source is electrically connected to the first end of the sixth resistor, and the drain is electrically connected to the motherboard;
  • the base of the second triode is electrically connected to the negative electrode of the two electrodes, and the emitter is grounded;
  • the base of the third triode receives the control signal, the positive electrode of the collector electrical two electrode, and the emitter are grounded.
  • the second output module further includes a third capacitor and a fourth capacitor
  • the first end of the third capacitor is electrically connected to the first end of the sixth resistor, and the second end is grounded;
  • the first end of the fourth capacitor is electrically connected to the drain of the second MOS tube, and the second end is grounded.
  • the display panel driving device further includes a power supply electrically connected to the power conversion circuit, and the power supply is used to output a power supply voltage to the power conversion circuit.
  • the step-down processing of the power supply voltage by the first output module specifically includes: stepping down the power supply voltage from a first voltage value to a second voltage value.
  • the first potential is less than the second potential.
  • the first voltage value is 24V
  • the second voltage value is 12V
  • the present invention provides a display panel driving device, which includes a power conversion circuit and a motherboard electrically connected to the power conversion circuit;
  • the power conversion circuit includes a detection control module and a power supply connected to the detection control module
  • the first output module and the second output module can be connected through the detection and control module to identify the voltage value of the power supply voltage, and the first output module or the second output module can be controlled to work according to the different voltage values, so that the voltage input to the motherboard is always Consistent with the working voltage of the motherboard, a motherboard can be used with two different power sources, expanding the application range of the motherboard and reducing the cost of product management.
  • FIG. 1 is a schematic diagram of an existing display panel driving device
  • FIG. 2 is a schematic diagram of a display panel driving device of the present invention
  • FIG. 3 is a circuit diagram of a power conversion module in a display panel driving device of the present invention.
  • the present invention provides a display panel driving device, including a power conversion circuit 1 And power conversion circuit 1 Electrically connected motherboard 2 ;
  • the power conversion circuit 1 Including detection control module 11 And with the detection control module 11 Electrically connected first output module 12 And the second output module 13 ;
  • the detection control module 11 Used to receive power supply voltage Vc , When the supply voltage Vc When the voltage value is the first voltage value, the control signal that generates the first potential Ctr , When the supply voltage Vc When the voltage value is the second voltage value, a control signal of a second potential different from the first potential is generated Ctr , The first voltage value is greater than the second voltage value;
  • the first output module 12 Used to receive power supply voltage Vc And control signals Ctr When the control signal Ctr When it is the first potential, the power supply voltage Vc Perform the step-down process, when the stepped down power supply voltage Vc Output to the motherboard 2 , When the control signal is the second potential, stop outputting the voltage to the motherboard 2 ;
  • the second output module 13 Used to receive power supply voltage Vc And control signals Ctr When the control signal Ctr When it is the second potential, the power supply voltage Vc Output to the motherboard 2 When the control signal Ctr When it is the first potential, stop outputting voltage to the motherboard 2 .
  • the display panel driving device further includes a power conversion circuit 1 Electrically connected power supply 3 , The power supply 3 For converting to the power supply circuit 1 Output power supply voltage Vc .
  • the first output module 11 For power supply voltage Vc The step-down processing is specifically as follows: Vc Step down from the first voltage value to the second voltage value, that is from 24V Lowered to 12V .
  • the first potential is less than the second potential.
  • the detection control module 11 Including: first resistance R1 ⁇ Second resistance R2 , The third resistance R3 First transistor T1 ;
  • the first resistance R1 The first terminal receives the power supply voltage Vc ,
  • the second terminal is electrically connected to the second resistor R2 The first end of the second resistor R2 The second end of the ground;
  • the third resistor R3 The first terminal is electrically connected to the first resistor R1 The first end and the second end are electrically connected to the first transistor T1 Collector and output control signal Ctr ;
  • the first triode T1 The base of the is electrically connected to the first resistor R1 At the second end, the emitter is grounded.
  • the first output module 12 Including: fourth resistance R4 5th resistance R5 ,the first MOS tube Q1 And buck unit J1 ;
  • the fourth resistor R4 The first terminal receives the power supply voltage Vc , The second terminal is electrically connected to the fifth resistor R5 The first end; the fifth resistor R5 The second end of the receiver receives the control signal Ctr ;
  • the first MOS tube Q1 Is electrically connected to the fifth resistor R5 The first end, the source is electrically connected to the fourth resistor R4 The first end of which is electrically connected to the buck unit J1 Input of the; the buck unit J1 The output of the is electrically connected to the motherboard 2 .
  • the first output module 12 also includes the first capacitor C1 And the second capacitor C2 ;
  • the first capacitor C1 The first terminal is electrically connected to the fourth resistor R4 The first end, the second end is grounded; the second capacitor C2 The first end of the is electrically connected to the first MOS tube Q1 , The second terminal is grounded.
  • the first capacitor C1 And the second capacitor C2 Both are filter capacitors.
  • the second output module 13 Including: sixth resistor R6 7th resistance R7 Eighth resistance R8 ,second MOS tube Q2 , The second transistor T2 , The third transistor T3 Diode D1 ;
  • the sixth resistor R6 The first terminal receives the power supply voltage Vc , The second end is electrically connected to the seventh resistor R7 The first end; the seventh resistor R7 The second end is electrically connected to the second transistor T2 Collector; the eighth resistor R8 The first end is electrically connected to the sixth resistor R6 The first end, the second end is electrically connected to the third transistor T3 Collector; the second MOS tube Q2 Is electrically connected to the seventh resistor R7 The first end, the source is electrically connected to the sixth resistor R6 The first end, the drain is electrically connected to the motherboard 2 ;
  • the second transistor T2 The base electrode is electrically connected to the two electrodes D1 The negative electrode, the emitter is grounded; the third transistor T3 The base receives the control signal Ctr , Collector electrode D
  • the second output module 13 also includes a third capacitor C3 And the fourth capacitor C4 ;
  • the third capacitor C3 The first end is electrically connected to the sixth resistor R6 The first end, the second end is grounded; the fourth capacitor C4 The first end is electrically connected to the second MOS tube Q2 , The second terminal is grounded.
  • the third capacitor C3 And the fourth capacitor C4 Both are filter capacitors.
  • the first resistance R1 for twenty four Thousand ohms, second resistance R2 for 1 Thousand ohms, third resistance R3 for 10 Thousand ohms, the first transistor T1 Turn-on voltage Vbe for 0.7V ;
  • the second capacitance is 10 ⁇ F .
  • the first MOS Guan Wei P type MOS tube, P type MOS The gate-source voltage of the tube is turned on when the voltage is negative.
  • the sixth resistor R6 for 10 Thousand ohms seventh resistance R7 for 10 Thousand ohms, eighth resistance R8 for 10 Thousand ohms, the third capacitor C3 for 1 ⁇ F ,
  • the fourth capacitor is 10 ⁇ F
  • the second MOS tube Q2 for P type MOS tube, P type MOS The gate-source voltage of the tube turns on when the voltage is negative D1 Schottky diode.
  • main board of the display panel driving device of the present invention With display panel 4 Electrical connection, used to connect the motherboard 1
  • the working voltage is provided to the display panel 4 To drive the display panel 4 Work, corresponding to the upcoming 12V Voltage input display panel 4 in.
  • the present invention provides a display panel driving device, which includes a power conversion circuit and a motherboard electrically connected to the power conversion circuit; the power conversion circuit includes a detection control module and an electrical connection with the detection control module
  • the connected first output module and second output module can identify the voltage value of the power supply voltage through the detection control module, and control the operation of the first output module or the second output module according to the different voltage values, so that the voltage input to the motherboard is always
  • the working voltage of the main board is consistent, so that one main board can be used with two different power sources, expanding the application range of the main board and reducing the cost of product management.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
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Abstract

Provided is a display panel driving device. The display panel driving device comprises a power supply conversion circuit (1) and a main board (2) electrically connected with the power supply conversion circuit (1); the power supply conversion circuit (1) comprises a detection control module (11), and a first output module (12) and a second output module (13), which are electrically connected with the detection control module (11), the detection control module (11) recognizes a voltage value of a power supply voltage (Vc), controls the first output module (12) or the second output module (13) to work according to the difference between voltage values, so that the voltage input to the main board (2) is always consistent with the working voltage of the main board (2), and one main board (2) can cooperate with two different power sources (3), thereby expanding the application range of the main board (2), and reducing management and control cost of products.

Description

显示面板驱动装置Display panel driving device 技术领域Technical field
本发明涉及显示技术领域，尤其涉及一种显示面板驱动装置。The present invention relates to the field of display technology, and in particular to a display panel driving device.
背景技术Background technique
随着显示技术的发展，液晶显示器（Liquid Crystal Display，LCD）等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。With the development of display technology, liquid crystal displays (LCD) and other flat display devices have been widely used in mobile phones, TVs, and individuals due to their advantages of high image quality, power saving, thin body, and wide application range. Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream in display devices.
现有市场上的液晶显示装置大部分为背光型液晶显示器，其包括液晶显示面板及背光模组（backlight module）。液晶显示面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，两片玻璃基板中间有许多垂直和水平的细小电线，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。Most of the liquid crystal display devices on the existing market are backlight type liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The liquid crystal molecules can be controlled to change the direction by energizing or not, and the light of the backlight module Refracted to produce a picture.
通常液晶显示面板还需要通过外部驱动装置进行驱动，如图1所示，所述外部驱动装置一般包括：电源100及主板200，所述电源100与所述主板200电性连接，所述主板200电性连接显示面板300，所述电源100一般用于向主板200提供电源电压，所述主板200用于向显示面板300提供驱动显示面板300工作的电压。Generally, the liquid crystal display panel also needs to be driven by an external driving device. As shown in FIG. 1, the external driving device generally includes: a power supply 100 and a motherboard 200, the power supply 100 is electrically connected to the motherboard 200, and the motherboard 200 The display panel 300 is electrically connected. The power supply 100 is generally used to provide a power supply voltage to the motherboard 200. The motherboard 200 is used to provide the display panel 300 with a voltage that drives the display panel 300 to work.
在现有技术中，用于液晶显示装置的电源的输出电压主要包括24V和12V两种类型，而现有的主板一般具有一个确定的工作电源，一般为24V或12V，也就是说，在一个液晶显示装置中，其电源的输出电压确定后，该液晶显示装置的主板的类型也已经确定，必须是工作电压与该电源的输出电压一致的祝爸妈，以保证主板能够顺利工作，在现有技术中，液晶显示装置的主板不可以混搭中不同输出电压的电源使用，只可以匹配同规格的电源，对不同输出电压的电源的兼容性不佳，造成主板的应用存在局限性，管控成本也相应提高。In the prior art, the output voltage of the power supply for the liquid crystal display device mainly includes two types of 24V and 12V, and the existing main board generally has a definite working power supply, generally 24V or 12V, that is to say, in a In the liquid crystal display device, after the output voltage of the power supply is determined, the type of the main board of the liquid crystal display device has also been determined. It must be the same as the working voltage and the output voltage of the power supply to ensure that the main board can work smoothly. In the technology, the main board of the liquid crystal display device cannot be used with power supplies of different output voltages in the mix and match, and can only match the power supplies of the same specification. The compatibility of the power supplies of different output voltages is not good, resulting in limitations in the application of the main board and cost control Also increased accordingly.
技术问题technical problem
本发明的目的在于提供一种显示面板驱动装置，能够扩展主板的应用范围，降低产品管控成本。The object of the present invention is to provide a display panel driving device, which can expand the application range of the motherboard and reduce the cost of product management and control.
技术解决方案Technical solution
为实现上述目的，本发明提供了一种显示面板驱动装置，包括电源转换电路及与电源转换电路电性连接的主板；To achieve the above object, the present invention provides a display panel driving device, which includes a power conversion circuit and a motherboard electrically connected to the power conversion circuit;
所述电源转换电路包括侦测控制模块以及与所述侦测控制模块电性连接的第一输出模块和第二输出模块；The power conversion circuit includes a detection control module and a first output module and a second output module electrically connected to the detection control module;
所述侦测控制模块用于接收电源电压，当所述电源电压的电压值为第一电压值时产生第一电位的控制信号，当所述电源电压的电压值为第二电压值时产生不同于第一电位的第二电位的控制信号，所述第一电压值大于第二电压值；The detection control module is used to receive a power supply voltage, generate a control signal of a first potential when the voltage value of the power supply voltage is a first voltage value, and generate a difference when the voltage value of the power supply voltage is a second voltage value A control signal of a second potential at a first potential, the first voltage value is greater than the second voltage value;
所述第一输出模块用于接收电源电压和控制信号，当所述控制信号为第一电位时，对电源电压进行降压处理，并将降压后的电源电压输出至主板，当所述控制信号为第二电位时，停止输出电压至主板；The first output module is used to receive a power supply voltage and a control signal. When the control signal is at a first potential, the power supply voltage is stepped down, and the stepped-down power supply voltage is output to the main board when the control When the signal is the second potential, stop outputting voltage to the motherboard;
所述第二输出模块用于接收电源电压和控制信号，当所述控制信号为第二电位时，将电源电压输出至主板，当所述控制信号为第一电位时，停止输出电压至主板。The second output module is used to receive the power supply voltage and the control signal. When the control signal is at the second potential, the power supply voltage is output to the main board, and when the control signal is at the first potential, the output voltage is stopped to the main board.
所述侦测控制模块包括：第一电阻、第二电阻、第三电阻及第一三极管；The detection control module includes: a first resistor, a second resistor, a third resistor, and a first transistor;
所述第一电阻的第一端接收电源电压，第二端电性连接第二电阻的第一端；The first end of the first resistor receives the power supply voltage, and the second end is electrically connected to the first end of the second resistor;
所述第二电阻的第二端接地；The second end of the second resistor is grounded;
所述第三电阻的第一端电性连接第一电阻的第一端，第二端电性连接第一三极管的集电极并输出控制信号；The first end of the third resistor is electrically connected to the first end of the first resistor, and the second end is electrically connected to the collector of the first transistor and outputs a control signal;
所述第一三极管的基极电性连接第一电阻的第二端，发射极接地。The base of the first triode is electrically connected to the second end of the first resistor, and the emitter is grounded.
所述第一输出模块包括：第四电阻、第五电阻、第一MOS管及降压单元；The first output module includes: a fourth resistor, a fifth resistor, a first MOS tube and a buck unit;
所述第四电阻的第一端接收电源电压，第二端电性连接第五电阻的第一端；The first end of the fourth resistor receives the power supply voltage, and the second end is electrically connected to the first end of the fifth resistor;
所述第五电阻的第二端接收控制信号；The second end of the fifth resistor receives the control signal;
所述第一MOS管的栅极电性连接第五电阻的第一端，源极电性连接第四电阻的第一端，漏极电性连接降压单元的输入端；The gate of the first MOS tube is electrically connected to the first end of the fifth resistor, the source is electrically connected to the first end of the fourth resistor, and the drain is electrically connected to the input end of the step-down unit;
所述降压单元的输出端电性连接主板。The output end of the step-down unit is electrically connected to the main board.
所述第一输出模块还包括第一电容及第二电容；The first output module further includes a first capacitor and a second capacitor;
所述第一电容的第一端电性连接第四电阻的第一端，第二端接地；The first end of the first capacitor is electrically connected to the first end of the fourth resistor, and the second end is grounded;
所述第二电容的第一端电性连接第一MOS管的漏极，第二端接地。The first end of the second capacitor is electrically connected to the drain of the first MOS tube, and the second end is grounded.
所述第二输出模块包括：第六电阻、第七电阻、第八电阻、第二MOS管、第二三极管、第三三极管及二极管；The second output module includes: a sixth resistor, a seventh resistor, an eighth resistor, a second MOS tube, a second transistor, a third transistor and a diode;
所述第六电阻的第一端接收电源电压，第二端电性连接第七电阻的第一端；The first end of the sixth resistor receives the power supply voltage, and the second end is electrically connected to the first end of the seventh resistor;
所述第七电阻的第二端电性连接第二三极管的集电极；The second end of the seventh resistor is electrically connected to the collector of the second triode;
所述第八电阻的第一端电性连接第六电阻的第一端，第二端电性连接第三三极管的集电极；The first end of the eighth resistor is electrically connected to the first end of the sixth resistor, and the second end is electrically connected to the collector of the third transistor;
所述第二MOS管的栅极电性连接第七电阻的第一端，源极电性连接第六电阻的第一端，漏极电性连接主板；The gate of the second MOS tube is electrically connected to the first end of the seventh resistor, the source is electrically connected to the first end of the sixth resistor, and the drain is electrically connected to the motherboard;
所述第二三极管的基极电性连接二电极的负极，发射极接地；The base of the second triode is electrically connected to the negative electrode of the two electrodes, and the emitter is grounded;
所述第三三极管的基极接收控制信号，集电极电性二电极的正极，发射极接地。The base of the third triode receives the control signal, the positive electrode of the collector electrical two electrode, and the emitter are grounded.
所述第二输出模块还包括第三电容及第四电容；The second output module further includes a third capacitor and a fourth capacitor;
所述第三电容的第一端电性连接第六电阻的第一端，第二端接地；The first end of the third capacitor is electrically connected to the first end of the sixth resistor, and the second end is grounded;
所述第四电容的第一端电性连接第二MOS管的漏极，第二端接地。The first end of the fourth capacitor is electrically connected to the drain of the second MOS tube, and the second end is grounded.
所述显示面板驱动装置还包括与所述电源转换电路电性连接的电源，所述电源用于向所述电源转换电路输出电源电压。The display panel driving device further includes a power supply electrically connected to the power conversion circuit, and the power supply is used to output a power supply voltage to the power conversion circuit.
所述第一输出模块对电源电压进行降压处理具体为：将所述电源电压从第一电压值降压至第二电压值。The step-down processing of the power supply voltage by the first output module specifically includes: stepping down the power supply voltage from a first voltage value to a second voltage value.
所述第一电位小于第二电位。The first potential is less than the second potential.
所述第一电压值为24V，第二电压值为12V。The first voltage value is 24V, and the second voltage value is 12V.
有益效果Beneficial effect
本发明的有益效果：本发明提供一种显示面板驱动装置，包括电源转换电路及与电源转换电路电性连接的主板；所述电源转换电路包括侦测控制模块以及与所述侦测控制模块电性连接的第一输出模块和第二输出模块，可通过侦测控制模块识别电源电压的电压值，根据电压值的不同控制第一输出模块或第二输出模块工作，使得输入到主板的电压始终与主板的工作电压一致，实现一块主板能够搭配两种不同的电源使用，扩展主板的应用范围，降低产品的管控成本。Beneficial effect of the present invention: The present invention provides a display panel driving device, which includes a power conversion circuit and a motherboard electrically connected to the power conversion circuit; the power conversion circuit includes a detection control module and a power supply connected to the detection control module The first output module and the second output module can be connected through the detection and control module to identify the voltage value of the power supply voltage, and the first output module or the second output module can be controlled to work according to the different voltage values, so that the voltage input to the motherboard is always Consistent with the working voltage of the motherboard, a motherboard can be used with two different power sources, expanding the application range of the motherboard and reducing the cost of product management.
附图说明BRIEF DESCRIPTION
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are provided for reference and explanation only, and are not intended to limit the present invention.
附图中，In the drawings,
图1为现有的显示面板驱动装置的示意图；FIG. 1 is a schematic diagram of an existing display panel driving device;
图2为本发明的显示面板驱动装置的示意图；2 is a schematic diagram of a display panel driving device of the present invention;
图3为本发明的显示面板驱动装置中电源转换模块的电路图。3 is a circuit diagram of a power conversion module in a display panel driving device of the present invention.
本发明的实施方式Embodiments of the invention
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。In order to further elaborate on the technical means adopted by the present invention and its effects, the following will be described in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.
请参阅图Please refer to the picture 22 至图To figure 33 ，本发明提供一种显示面板驱动装置，包括电源转换电路The present invention provides a display panel driving device, including a power conversion circuit 11 及与电源转换电路And power conversion circuit 11 电性连接的主板Electrically connected motherboard 22 ；;
所述电源转换电路The power conversion circuit 11 包括侦测控制模块Including detection control module 1111 以及与所述侦测控制模块And with the detection control module 1111 电性连接的第一输出模块Electrically connected first output module 1212 和第二输出模块And the second output module 1313 ；;
所述侦测控制模块The detection control module 1111 用于接收电源电压Used to receive power supply voltage VcVc ，当所述电源电压, When the supply voltage VcVc 的电压值为第一电压值时产生第一电位的控制信号When the voltage value is the first voltage value, the control signal that generates the first potential CtrCtr ，当所述电源电压, When the supply voltage VcVc 的电压值为第二电压值时产生不同于第一电位的第二电位的控制信号When the voltage value is the second voltage value, a control signal of a second potential different from the first potential is generated CtrCtr ，所述第一电压值大于第二电压值；, The first voltage value is greater than the second voltage value;
所述第一输出模块The first output module 1212 用于接收电源电压Used to receive power supply voltage VcVc 和控制信号And control signals CtrCtr ，当所述控制信号When the control signal CtrCtr 为第一电位时，对电源电压When it is the first potential, the power supply voltage VcVc 进行降压处理，当将降压后的电源电压Perform the step-down process, when the stepped down power supply voltage VcVc 输出至主板Output to the motherboard 22 ，在所述控制信号为第二电位时，停止输出电压至主板, When the control signal is the second potential, stop outputting the voltage to the motherboard 22 ；;
所述第二输出模块The second output module 1313 用于接收电源电压Used to receive power supply voltage VcVc 和控制信号And control signals CtrCtr ，当所述控制信号When the control signal CtrCtr 为第二电位时，将电源电压When it is the second potential, the power supply voltage VcVc 输出至主板Output to the motherboard 22 ，当所述控制信号When the control signal CtrCtr 为第一电位时，停止输出电压至主板When it is the first potential, stop outputting voltage to the motherboard 22 。.
此外，如图In addition, as shown 22 所示，所述显示面板驱动装置还包括与所述电源转换电路As shown, the display panel driving device further includes a power conversion circuit 11 电性连接的电源Electrically connected power supply 33 ，所述电源, The power supply 33 用于向所述电源转换电路For converting to the power supply circuit 11 输出电源电压Output power supply voltage VcVc 。.
具体地，根据所述电源Specifically, according to the power supply 33 的型号的不同，所述电源Different models, the power supply 33 输出到所述电源转换电路Output to the power conversion circuit 11 的电源电压Power supply voltage VcVc 可以为Can be 12V12V 或or 24V24V 。.
具体地，所述第一输出模块Specifically, the first output module 1111 对电源电压For power supply voltage VcVc 进行降压处理具体为：将所述电源电压The step-down processing is specifically as follows: VcVc 从第一电压值降压至第二电压值，也即从Step down from the first voltage value to the second voltage value, that is from 24V24V 降低至Lowered to 12V12V 。.
具体地，所述第一电位小于第二电位。Specifically, the first potential is less than the second potential.
具体地，在本发明的具体实施例中，所述侦测控制模块Specifically, in a specific embodiment of the present invention, the detection control module 1111 包括：第一电阻Including: first resistance R1R1 、第二电阻、Second resistance R2R2 、第三电阻, The third resistance R3R3 及第一三极管First transistor T1T1 ；所述第一电阻; The first resistance R1R1 的第一端接收电源电压The first terminal receives the power supply voltage VcVc ，第二端电性连接第二电阻, The second terminal is electrically connected to the second resistor R2R2 的第一端；所述第二电阻The first end of the second resistor R2R2 的第二端接地；所述第三电阻The second end of the ground; the third resistor R3R3 的第一端电性连接第一电阻The first terminal is electrically connected to the first resistor R1R1 的第一端，第二端电性连接第一三极管The first end and the second end are electrically connected to the first transistor T1T1 的集电极并输出控制信号Collector and output control signal CtrCtr ；所述第一三极管; The first triode T1T1 的基极电性连接第一电阻The base of the is electrically connected to the first resistor R1R1 的第二端，发射极接地。At the second end, the emitter is grounded.
具体地，在本发明的具体实施例中，所述第一输出模块Specifically, in a specific embodiment of the present invention, the first output module 1212 包括：第四电阻Including: fourth resistance R4R4 、第五电阻5th resistance R5R5 、第一,the first MOSMOS 管tube Q1Q1 及降压单元And buck unit J1J1 ；所述第四电阻; The fourth resistor R4R4 的第一端接收电源电压The first terminal receives the power supply voltage VcVc ，第二端电性连接第五电阻, The second terminal is electrically connected to the fifth resistor R5R5 的第一端；所述第五电阻The first end; the fifth resistor R5R5 的第二端接收控制信号The second end of the receiver receives the control signal CtrCtr ；所述第一; The first MOSMOS 管tube Q1Q1 的栅极电性连接第五电阻Is electrically connected to the fifth resistor R5R5 的第一端，源极电性连接第四电阻The first end, the source is electrically connected to the fourth resistor R4R4 的第一端，漏极电性连接降压单元The first end of which is electrically connected to the buck unit J1J1 的输入端；所述降压单元Input of the; the buck unit J1J1 的输出端电性连接主板The output of the is electrically connected to the motherboard 22 。.
进一步地，在本发明的具体实施例中，所述第一输出模块Further, in a specific embodiment of the present invention, the first output module 1212 还包括第一电容Also includes the first capacitor C1C1 及第二电容And the second capacitor C2C2 ；所述第一电容; The first capacitor C1C1 的第一端电性连接第四电阻The first terminal is electrically connected to the fourth resistor R4R4 的第一端，第二端接地；所述第二电容The first end, the second end is grounded; the second capacitor C2C2 的第一端电性连接第一The first end of the is electrically connected to the first MOSMOS 管tube Q1Q1 的漏极，第二端接地。其中，所述第一电容, The second terminal is grounded. Among them, the first capacitor C1C1 及第二电容And the second capacitor C2C2 均为滤波电容。Both are filter capacitors.
具体地，所述第二输出模块Specifically, the second output module 1313 包括：第六电阻Including: sixth resistor R6R6 、第七电阻7th resistance R7R7 、第八电阻Eighth resistance R8R8 、第二,second MOSMOS 管tube Q2Q2 、第二三极管, The second transistor T2T2 、第三三极管, The third transistor T3T3 及二极管Diode D1D1 ；所述第六电阻; The sixth resistor R6R6 的第一端接收电源电压The first terminal receives the power supply voltage VcVc ，第二端电性连接第七电阻, The second end is electrically connected to the seventh resistor R7R7 的第一端；所述第七电阻The first end; the seventh resistor R7R7 的第二端电性连接第二三极管The second end is electrically connected to the second transistor T2T2 的集电极；所述第八电阻Collector; the eighth resistor R8R8 的第一端电性连接第六电阻The first end is electrically connected to the sixth resistor R6R6 的第一端，第二端电性接第三三极管The first end, the second end is electrically connected to the third transistor T3T3 的集电极；所述第二Collector; the second MOSMOS 管tube Q2Q2 的栅极电性连接第七电阻Is electrically connected to the seventh resistor R7R7 的第一端，源极电性连接第六电阻The first end, the source is electrically connected to the sixth resistor R6R6 的第一端，漏极电性连接主板The first end, the drain is electrically connected to the motherboard 22 ；所述第二三极管; The second transistor T2T2 的基极电性连接二电极The base electrode is electrically connected to the two electrodes D1D1 的负极，发射极接地；所述第三三极管The negative electrode, the emitter is grounded; the third transistor T3T3 的基极接收控制信号The base receives the control signal CtrCtr ，集电极电性二电极, Collector electrode D1D1 的正极，发射极接地。The positive electrode, the emitter is grounded.
进一步地，所述第二输出模块Further, the second output module 1313 还包括第三电容Also includes a third capacitor C3C3 及第四电容And the fourth capacitor C4C4 ；所述第三电容; The third capacitor C3C3 的第一端电性连接第六电阻The first end is electrically connected to the sixth resistor R6R6 的第一端，第二端接地；所述第四电容The first end, the second end is grounded; the fourth capacitor C4C4 的第一端电性连接第二The first end is electrically connected to the second MOSMOS 管tube Q2Q2 的漏极，第二端接地。其中，所述第三电容, The second terminal is grounded. Among them, the third capacitor C3C3 及第四电容And the fourth capacitor C4C4 均为滤波电容。Both are filter capacitors.
具体地，在本发明的实施例中，所述第一电阻Specifically, in the embodiment of the present invention, the first resistance R1R1 为for 24twenty four 千欧，第二电阻Thousand ohms, second resistance R2R2 为for 11 千欧，第三电阻Thousand ohms, third resistance R3R3 为for 1010 千欧，所述第一三极管Thousand ohms, the first transistor T1T1 的导通电压Turn-on voltage VbeVbe 为for 0.7V0.7V ；;
如图As shown 33 所示，当电源As shown, when the power supply 33 输出到所述电源转换电路Output to the power conversion circuit 11 的电源电压Power supply voltage VcVc 为for 24V24V 时，所述第一三极管的基极电压为, The base voltage of the first transistor is 0.96V0.96V ，所述第一三极管, The first triode T1T1 导通，所述第一三极管Turn on, the first triode T1T1 的集电极的电压被拉低至The collector voltage is pulled down to 00 ，也即输出的控制信号, Which is the output control signal CtrCtr 的电位Potential 00 ，也即所述第一电位为, That is, the first potential is 00 电位。Potential.
如图As shown 33 所示，当电源As shown, when the power supply 33 输出到所述电源转换电路Output to the power conversion circuit 11 的电源电压Power supply voltage VcVc 为for 12V12V 时，所述第一三极管的基极电压为, The base voltage of the first transistor is 0.48V0.48V ，所述第一三极管, The first triode T1T1 截止，所述第一三极管By the end, the first triode T1T1 的集电极的电压为The collector voltage is 12V12V ，也即输出的控制信号, Which is the output control signal CtrCtr 的电位为The potential is 12V12V ，也即所述第二电位为, That is, the second potential is 12V12V 。.
进一步地，所述第四电阻Further, the fourth resistor R4R4 为for 1010 千欧，第五电阻Thousand ohms, fifth resistance R5R5 为for 1010 千欧，第一电容Thousand ohms, the first capacitor C1C1 为for 11 μμ FF ，第二电容为, The second capacitance is 1010 μμ FF ，所述第一, The first MOSMOS 管为Guan Wei PP 型type MOSMOS 管，tube, PP 型type MOSMOS 管的栅源极电压为负压时导通。The gate-source voltage of the tube is turned on when the voltage is negative.
如图As shown 33 所示，当电源As shown, when the power supply 33 输出到所述电源转换电路Output to the power conversion circuit 11 的电源电压Power supply voltage VcVc 为for 24V24V 时，控制信号, Control signal CtrCtr 为for 00 电位，第一Potential, first MOSMOS 管tube Q1Q1 的栅极电压等于The gate voltage of is equal to 12V12V ，第一,the first MOSMOS 管的栅源极电压为负The gate-source voltage of the tube is negative 12V12V ，从而第一So that first MOSMOS 管导通，The tube is on, 24V24V 的电源电压Power supply voltage VcVc 输入到降压单元Input to the buck unit J1J1 中，经过降压单元In the middle, after the buck unit J1J1 的降压至Buck to 12V12V 后，产生After 12V12V 的降压后的电源电压输入到主板The reduced power supply voltage is input to the motherboard 11 中作为主板As a motherboard 11 的工作电压；Working voltage
如图As shown 33 所示，当电源As shown, when the power supply 33 输出到所述电源转换电路Output to the power conversion circuit 11 的电源电压Power supply voltage VcVc 为for 12V12V 时，控制信号, Control signal CtrCtr 为for 12V12V ，第四电阻, Fourth resistance R4R4 和第五电阻And the fifth resistor R5R5 上无电流流过，第一No current flows on the first MOSMOS 管tube Q1Q1 的栅极电压等于The gate voltage of is equal to 12V12V ，第一,the first MOSMOS 管的栅源极电压为The gate-source voltage of the tube is 0V0V ，从而第一So that first MOSMOS 管tube Q1Q1 截止，cutoff, 12V12V 的电源电压Power supply voltage VcVc 无法通过第一Unable to pass first MOSMOS 管tube Q1Q1 输入到降压单元Input to the buck unit J1J1 中，降压单元Medium, step-down unit J1J1 的输出端无电压输出。There is no voltage output at the output of.
进一步地，所述第六电阻Further, the sixth resistor R6R6 为for 1010 千欧、第七电阻Thousand ohms, seventh resistance R7R7 为for 1010 千欧、第八电阻Thousand ohms, eighth resistance R8R8 为for 1010 千欧，第三电容Thousand ohms, the third capacitor C3C3 为for 11 μμ FF ，第四电容为, The fourth capacitor is 1010 μμ FF ，所述第二,The second MOSMOS 管tube Q2Q2 为for PP 型type MOSMOS 管，tube, PP 型type MOSMOS 管的栅源极电压为负压时导通，二极管The gate-source voltage of the tube turns on when the voltage is negative D1D1 为肖特基二极管。Schottky diode.
如图As shown 33 所示，当电源As shown, when the power supply 33 输出到所述电源转换电路Output to the power conversion circuit 11 的电源电压Power supply voltage VcVc 为for 24V24V 时，控制信号, Control signal CtrCtr 为for 00 电位，第三三极管Potential, third transistor T3T3 导通，第三三极管On, third transistor T3T3 的集电极电压为The collector voltage of 0V0V ，二极管,diode D1D1 反向偏置截止，第二三极管Reverse bias cutoff, second transistor T2T2 截止，第二Deadline, second MOSMOS 管tube Q2Q2 的栅极电压为The gate voltage of 24V24V ，第二,second MOSMOS 管tube Q2Q2 的栅源极电压为The gate-to-source voltage is 00 ，第二,second MOSMOS 管tube Q2Q2 截止，cutoff, 24V24V 的电源电压Power supply voltage VcVc 无法通过第二Unable to pass the second MOSMOS 管tube Q2Q2 输入到主板Input to motherboard 11 中；in;
如图As shown 33 所示，当电源As shown, when the power supply 33 输出到所述电源转换电路Output to the power conversion circuit 11 的电源电压Power supply voltage VcVc 为for 12V12V 时，控制信号, Control signal CtrCtr 为for 12V12V ，第三三极管, The third transistor T3T3 截止，第三三极管By the end, the third transistor T3T3 的集电极电压为The collector voltage of 12V12V ，二极管,diode D1D1 正向偏置导通，第二三极管Forward biased conduction, second transistor T2T2 导通，第二Continuity, second MOSMOS 管tube Q2Q2 的栅极电压为The gate voltage of 6V6V ，第二,second MOSMOS 管tube Q2Q2 的栅源极电压为负Gate-source voltage is negative 6V6V ，第二,second MOSMOS 管tube Q2Q2 导通，Turn on, 12V12V 的电源电压Power supply voltage VcVc 通过第二Pass second MOSMOS 管tube Q2Q2 输入到主板Input to motherboard 11 中作为主板As a motherboard 11 的工作电压。Working voltage.
进一步地，本发明的显示面板驱动装置的主板Further, the main board of the display panel driving device of the present invention 11 与显示面板With display panel 44 电性连接，用于将主板Electrical connection, used to connect the motherboard 11 的工作电压提供给显示面板The working voltage is provided to the display panel 44 ，以驱动所述显示面板To drive the display panel 44 工作，对应上述实施例中即将Work, corresponding to the upcoming 12V12V 的电压输入显示面板Voltage input display panel 44 中。in.
综上所述，本发明提供一种显示面板驱动装置，包括电源转换电路及与电源转换电路电性连接的主板；所述电源转换电路包括侦测控制模块以及与所述侦测控制模块电性连接的第一输出模块和第二输出模块，可通过侦测控制模块识别电源电压的电压值，根据电压值的不同控制第一输出模块或第二输出模块工作，使得输入到主板的电压始终与主板的工作电压一致，实现一块主板能够搭配两种不同的电源使用，扩展主板的应用范围，降低产品的管控成本。In summary, the present invention provides a display panel driving device, which includes a power conversion circuit and a motherboard electrically connected to the power conversion circuit; the power conversion circuit includes a detection control module and an electrical connection with the detection control module The connected first output module and second output module can identify the voltage value of the power supply voltage through the detection control module, and control the operation of the first output module or the second output module according to the different voltage values, so that the voltage input to the motherboard is always The working voltage of the main board is consistent, so that one main board can be used with two different power sources, expanding the application range of the main board and reducing the cost of product management.
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。As mentioned above, those of ordinary skill in the art can make various other corresponding changes and modifications according to the technical solutions and technical concepts of the present invention, and all such changes and modifications should fall within the protection scope of the claims of the present invention. .

Claims (10)

  1. 一种显示面板驱动装置，包括电源转换电路及与电源转换电路电性连接的主板；A display panel driving device includes a power conversion circuit and a motherboard electrically connected to the power conversion circuit;
    所述电源转换电路包括侦测控制模块以及与所述侦测控制模块电性连接的第一输出模块和第二输出模块；The power conversion circuit includes a detection control module and a first output module and a second output module electrically connected to the detection control module;
    所述侦测控制模块用于接收电源电压，当所述电源电压的电压值为第一电压值时产生第一电位的控制信号，当所述电源电压的电压值为第二电压值时产生不同于第一电位的第二电位的控制信号，所述第一电压值大于第二电压值；The detection control module is used to receive a power supply voltage, generate a control signal of a first potential when the voltage value of the power supply voltage is a first voltage value, and generate a difference when the voltage value of the power supply voltage is a second voltage value A control signal of a second potential at a first potential, the first voltage value is greater than the second voltage value;
    所述第一输出模块用于接收电源电压和控制信号，当所述控制信号为第一电位时，对电源电压进行降压处理，并将降压后的电源电压输出至主板，当所述控制信号为第二电位时，停止输出电压至主板；The first output module is used to receive a power supply voltage and a control signal. When the control signal is at a first potential, the power supply voltage is stepped down, and the stepped-down power supply voltage is output to the main board when the control When the signal is the second potential, stop outputting voltage to the motherboard;
    所述第二输出模块用于接收电源电压和控制信号，当所述控制信号为第二电位时，将电源电压输出至主板，当所述控制信号为第一电位时，停止输出电压至主板。The second output module is used to receive the power supply voltage and the control signal. When the control signal is at the second potential, the power supply voltage is output to the main board, and when the control signal is at the first potential, the output voltage is stopped to the main board.
  2. 如权利要求1所述的显示面板驱动装置，其中，所述侦测控制模块包括：第一电阻、第二电阻、第三电阻及第一三极管；The display panel driving device according to claim 1, wherein the detection control module comprises: a first resistor, a second resistor, a third resistor and a first transistor;
    所述第一电阻的第一端接收电源电压，第二端电性连接第二电阻的第一端；The first end of the first resistor receives the power supply voltage, and the second end is electrically connected to the first end of the second resistor;
    所述第二电阻的第二端接地；The second end of the second resistor is grounded;
    所述第三电阻的第一端电性连接第一电阻的第一端，第二端电性连接第一三极管的集电极并输出控制信号；The first end of the third resistor is electrically connected to the first end of the first resistor, and the second end is electrically connected to the collector of the first transistor and outputs a control signal;
    所述第一三极管的基极电性连接第一电阻的第二端，发射极接地。The base of the first triode is electrically connected to the second end of the first resistor, and the emitter is grounded.
  3. 如权利要求1所述的显示面板驱动装置，其中，所述第一输出模块包括：第四电阻、第五电阻、第一MOS管及降压单元；The display panel driving device of claim 1, wherein the first output module comprises: a fourth resistor, a fifth resistor, a first MOS tube, and a step-down unit;
    所述第四电阻的第一端接收电源电压，第二端电性连接第五电阻的第一端；The first end of the fourth resistor receives the power supply voltage, and the second end is electrically connected to the first end of the fifth resistor;
    所述第五电阻的第二端接收控制信号；The second end of the fifth resistor receives the control signal;
    所述第一MOS管的栅极电性连接第五电阻的第一端，源极电性连接第四电阻的第一端，漏极电性连接降压单元的输入端；The gate of the first MOS tube is electrically connected to the first end of the fifth resistor, the source is electrically connected to the first end of the fourth resistor, and the drain is electrically connected to the input end of the step-down unit;
    所述降压单元的输出端电性连接主板。The output end of the step-down unit is electrically connected to the main board.
  4. 如权利要求1所述的显示面板驱动装置，其中，所述第一输出模块还包括第一电容及第二电容；The display panel driving device of claim 1, wherein the first output module further comprises a first capacitor and a second capacitor;
    所述第一电容的第一端电性连接第四电阻的第一端，第二端接地；The first end of the first capacitor is electrically connected to the first end of the fourth resistor, and the second end is grounded;
    所述第二电容的第一端电性连接第一MOS管的漏极，第二端接地。The first end of the second capacitor is electrically connected to the drain of the first MOS tube, and the second end is grounded.
  5. 如权利要求1所述的显示面板驱动装置，其中，所述第二输出模块包括：第六电阻、第七电阻、第八电阻、第二MOS管、第二三极管、第三三极管及二极管；The display panel driving device of claim 1, wherein the second output module comprises: a sixth resistor, a seventh resistor, an eighth resistor, a second MOS tube, a second transistor, and a third transistor And diode;
    所述第六电阻的第一端接收电源电压，第二端电性连接第七电阻的第一端；The first end of the sixth resistor receives the power supply voltage, and the second end is electrically connected to the first end of the seventh resistor;
    所述第七电阻的第二端电性连接第二三极管的集电极；The second end of the seventh resistor is electrically connected to the collector of the second triode;
    所述第八电阻的第一端电性连接第六电阻的第一端，第二端电性连接第三三极管的集电极；The first end of the eighth resistor is electrically connected to the first end of the sixth resistor, and the second end is electrically connected to the collector of the third transistor;
    所述第二MOS管的栅极电性连接第七电阻的第一端，源极电性连接第六电阻的第一端，漏极电性连接主板；The gate of the second MOS tube is electrically connected to the first end of the seventh resistor, the source is electrically connected to the first end of the sixth resistor, and the drain is electrically connected to the motherboard;
    所述第二三极管的基极电性连接二电极的负极，发射极接地；The base of the second triode is electrically connected to the negative electrode of the two electrodes, and the emitter is grounded;
    所述第三三极管的基极接收控制信号，集电极电性二电极的正极，发射极接地。The base of the third triode receives the control signal, the positive electrode of the collector electrical two electrode, and the emitter are grounded.
  6. 如权利要求5所述的显示面板驱动装置，其中，所述第二输出模块还包括第三电容及第四电容；The display panel driving device according to claim 5, wherein the second output module further comprises a third capacitor and a fourth capacitor;
    所述第三电容的第一端电性连接第六电阻的第一端，第二端接地；The first end of the third capacitor is electrically connected to the first end of the sixth resistor, and the second end is grounded;
    所述第四电容的第一端电性连接第二MOS管的漏极，第二端接地。The first end of the fourth capacitor is electrically connected to the drain of the second MOS tube, and the second end is grounded.
  7. 如权利要求1所述的显示面板驱动装置，还包括与所述电源转换电路电性连接的电源，所述电源用于向所述电源转换电路输出电源电压。The display panel driving device according to claim 1, further comprising a power supply electrically connected to the power conversion circuit, the power supply being used to output a power supply voltage to the power conversion circuit.
  8. 如权利要求1所述的显示面板驱动装置，其中，所述第一输出模块对电源电压进行降压处理具体为：将所述电源电压从第一电压值降压至第二电压值。The display panel driving device according to claim 1, wherein the first output module performing the step-down process on the power supply voltage specifically comprises: stepping down the power supply voltage from a first voltage value to a second voltage value.
  9. 如权利要求1所述的显示面板驱动装置，其中，所述第一电位小于第二电位。The display panel driving device of claim 1, wherein the first potential is smaller than the second potential.
  10. 如权利要求1所述的显示面板驱动装置，其中，所述第一电压值为24V，第二电压值为12V。The display panel driving device according to claim 1, wherein the first voltage value is 24V and the second voltage value is 12V.
PCT/CN2018/121857 2018-12-06 2018-12-18 Display panel driving device WO2020113677A1 (en)

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