WO2020133633A1 - 显示面板的升压电路、升压控制方法和显示装置 - Google Patents

显示面板的升压电路、升压控制方法和显示装置 Download PDF

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Publication number
WO2020133633A1
WO2020133633A1 PCT/CN2019/073628 CN2019073628W WO2020133633A1 WO 2020133633 A1 WO2020133633 A1 WO 2020133633A1 CN 2019073628 W CN2019073628 W CN 2019073628W WO 2020133633 A1 WO2020133633 A1 WO 2020133633A1
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Prior art keywords
circuit
resistor
output
display panel
potential
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PCT/CN2019/073628
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English (en)
French (fr)
Inventor
邱彬
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惠科股份有限公司
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Priority to US17/040,981 priority Critical patent/US11100884B2/en
Publication of WO2020133633A1 publication Critical patent/WO2020133633A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0289—Details of voltage level shifters arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/025—Reduction of instantaneous peaks of current
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/04—Display protection
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

Definitions

  • the present application relates to the field of display technology, and in particular to a boosting circuit, boosting control method and display device for a display panel.
  • GDL Gate driverless
  • the LCD panel must bind the gate driver chip (Gate Integrated Circuit, Gate IC) to the panel, and the size of the Gate IC limits the further narrowing of the border.
  • the GDL circuit splits the original Gate IC into two parts: boost IC (level shifter IC) and shift register (shift register), and level shifter IC does On the driver board, the shift register is made on the panel, and the level shifter IC sends the clock signal (CLK) to the shift register to complete the drive, so that the Gate IC is no longer needed, so the frame length can be further compressed.
  • boost IC level shifter IC
  • shift register shift register
  • CLK clock signal
  • the application provides a boosting circuit, a boosting control method and a display device for a display panel, to improve the situation where the screen is burned out due to an excessive instantaneous current.
  • the present application also discloses a booster circuit for a display panel, which includes: a potential booster circuit that boosts the potential of the input signal to generate a drive signal; detects the real-time current value of the drive signal output by the potential booster circuit, and outputs a corresponding detection A current detection circuit for measuring signals; a main control circuit connected to the potential boosting circuit; when it detects that the detection signal output by the current detection circuit satisfies a preset condition, the main control circuit controls the boosting circuit Stop driving signal output.
  • a self-locking circuit is further provided between the current detection circuit and the main control circuit; the self-locking circuit receives the detection signal output by the current detection circuit, and detects the detection After the test signal meets the preset condition, the self-locking circuit continuously outputs a self-locking signal to the main control circuit; the main control circuit controls the booster circuit to stop outputting the drive signal.
  • the current detection circuit when the current detection circuit detects that the current value of the driving signal is less than or equal to a preset threshold, it outputs a first reference voltage to the self-locking circuit; the current detection circuit detects that the current value is greater than When the threshold is preset, the second reference voltage is output to the self-locking circuit.
  • the self-locking circuit includes a first switch and a second switch; the control terminal of the first switch is connected to the input terminal of the self-locking circuit, and the first reference voltage is input to the input of the first switch Terminal; the output terminal of the first switch is connected to the control terminal of the second switch and the output terminal of the self-locking circuit; the second reference voltage is input to the input terminal of the second switch, the output of the second switch The terminal is connected to the control terminal of the first switch; a second resistor is connected between the control terminal of the second switch and the input terminal of the second switch.
  • the first switch when the input terminal of the self-locking circuit inputs the first reference voltage output by the current detection circuit, the first switch is turned off, and the second switch is turned off; the self-locking circuit outputs The second reference voltage.
  • the first switch when the second reference voltage output by the current detection circuit is input to the input terminal of the self-locking circuit, the first switch is opened, and the first switch outputs the first reference voltage to the second The control terminal and the main control circuit of the switch control the main control circuit to close, and at the same time the second switch is opened, and continuously output the second reference voltage to the control terminal of the first switch.
  • a first resistor is connected between the control terminal of the first switch and the input terminal of the first switch.
  • the current detection circuit includes: a sense resistor connected in series between the output terminal of the potential booster circuit and the output terminal of the booster circuit; collecting the first voltage of the output terminal of the potential booster circuit A first voltage acquisition circuit; a second voltage acquisition circuit that acquires a second voltage at the output of the booster circuit; a comparison circuit that compares the difference between the first voltage and the second voltage with a preset threshold, at When the difference is greater than a preset threshold, a first detection signal is output to the main control circuit; when the difference is less than a preset threshold, a second detection signal is output.
  • the comparison circuit is an operational amplifier
  • the operational method of the operational amplifier is a subtraction operation
  • the first voltage acquiring circuit includes a fourth resistor and a fifth resistor; the second voltage acquiring circuit includes a sixth resistor; the fourth resistor and the fifth resistor are connected in series to the booster circuit Between the output terminal and the low level, the first voltage acquisition circuit collects the first voltage at the output terminal of the potential boosting circuit; the first input terminal of the comparison circuit is connected to the fourth resistor and the fifth resistor Between, the voltage acquired by the first voltage acquisition circuit is output to the first input terminal of the comparison circuit; the sixth resistor is connected to the second input terminal of the comparison circuit and the output of the booster circuit Between the terminals, the second voltage obtaining circuit obtains the voltage at the output end of the boosting circuit;
  • the current detection circuit further includes a seventh resistor, and the seventh resistor is connected between the second input terminal and the output terminal of the comparison circuit.
  • the fourth resistor, the fifth resistor, the sixth resistor, and the seventh resistor have the same resistance value.
  • the fourth resistor, the fifth resistor, the sixth resistor, and the seventh resistor have different resistance values.
  • a third resistor is provided between the input terminal of the self-locking circuit and the output terminal of the current detection circuit.
  • the present application also provides a boost control method for the boost circuit of the display panel as described above, including the steps of:
  • the potential lifting circuit receives the input signal and raises the potential of the input signal to generate a driving signal
  • the determining determines whether the real-time current value of the drive signal output from the output end of the booster circuit exceeds a preset threshold; when it is detected that the real-time current value does not exceed the preset threshold, the potential boosting circuit Normally output the driving signal; when it is detected that the real-time current value exceeds the preset threshold, the step of controlling the potential boosting circuit to stop outputting the driving signal:
  • the self-locking circuit When it is detected that the real-time current value exceeds a preset threshold, the self-locking circuit continuously outputs the second reference voltage to the main control circuit, and the main control circuit controls the potential boosting circuit to stop outputting the drive signal.
  • the present application also provides a display device, including: a display panel, a drive circuit driving the display panel; the drive circuit includes a booster circuit; the booster circuit includes: boosting the potential of the input signal to generate a drive signal, and output A potential boosting circuit that drives the signal to the output of the booster circuit; a current detection circuit that detects the real-time current value of the drive signal output by the potential booster circuit and outputs a corresponding detection signal; and a control connection to the potential booster circuit
  • the main control circuit detects that the detection signal output by the current detection circuit meets a preset condition, and the main control circuit controls the booster circuit to stop outputting the drive signal.
  • the drive circuit includes a gate drive circuit.
  • the gate drive circuit includes: a shift circuit and the boost circuit; the shift circuit is formed on the display panel, The scan lines of the display panel provide scan signals.
  • a current detection circuit is added to the circuit to detect the real-time current value at the output end of the booster circuit.
  • a detection signal that meets the preset condition is output to trigger the main control circuit to control the booster circuit Stop outputting the drive signal; this design can protect against stopping boost even when there is a large current instantaneously, the protection effect is very good.
  • FIG. 1 is a schematic diagram of a boost circuit of a display panel according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method for overcurrent protection of a display panel according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a display device according to an embodiment of the present application.
  • the features defined as “first” and “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more.
  • the term “including” and any variations thereof are intended to cover non-exclusive inclusions.
  • an embodiment of the present application discloses a boosting circuit 310 for a display panel, which includes: a potential boosting circuit 312 that boosts the potential of an input signal to generate a drive signal; a detection of the real-time output of the drive signal by the potential boosting circuit 312
  • the current detection circuit 330 of the current value outputs the corresponding detection signal; the main control circuit 311 controlled to connect with the potential boosting circuit 312, when it detects that the detection signal output by the current detection circuit meets the preset condition, the main control The circuit 311 controls the booster circuit 310 to stop outputting the drive signal.
  • the display panel may show chip burnout or screen burning.
  • This solution adds a current detection circuit in the booster circuit 310 that boosts the voltage to detect the real-time current value at the output.
  • the preset threshold is: set a specific current value, For example, when the current value is set to 1 ampere, when the current exceeds 1 ampere, the condition is met, that is, the detection signal that meets the preset condition is output (the preset condition is met: whether the current value reaches the current value that can be detected, when it reaches At a current value, the conditions are met), triggering the main control circuit 311 to control the boost circuit 310 to stop outputting the drive signal; this design can protect against stopping boost even when there is a large current instantaneously, the protection effect is very good .
  • the self-locking circuit 340 receives the detection signal output by the current detection circuit 330 and detects that the detection signal satisfies the predetermined After the condition is set, the self-locking circuit 340 continuously outputs a self-locking signal to the main control circuit 311; the main control circuit 311 controls the booster circuit 310 to stop outputting the drive signal; the preset logic is that the current detection circuit 330 detects the potential boosting circuit 312 Whether the output current exceeds a certain set threshold.
  • the self-locking circuit 340 detects that the detection signal satisfies the preset condition
  • the current detection circuit 330 detects that the current at the output end of the boosting circuit 310 is too large instantaneously, and the self-locking circuit 340 outputs the self-locking signal.
  • the current at the output end of the booster circuit 310 returns to normal, and the self-locking circuit 340 continuously outputs a self-locking signal, and will not continuously change due to the fluctuation of the current detection circuit 330 output. Recovery, so as to remind you to check in time to avoid more serious consequences such as screen burning or even fire.
  • the current detection circuit 330 When the current detection circuit 330 detects that the current value of the driving signal is less than or equal to the preset threshold, it outputs the first reference voltage to the self-locking circuit 340; when the current detection circuit 330 detects that the current at the output terminal is greater than the preset threshold, The second reference voltage is output to the self-locking circuit 340; the self-locking circuit 340 includes: a first switch (M1) and a second switch (M2); the control terminal of M1 is connected to the input terminal of the self-locking circuit 340, and the first reference voltage is input To the input terminal of M1; the output terminal of M1 is connected to the control terminal of M2 and the output terminal of the entire self-locking circuit 340; the second reference voltage is output to the input terminal of M2, and the output terminal of M2 is connected to the control terminal of M1; R2 is connected between the control end and the input end of M2; when the first reference voltage output by the current detection circuit is input to the input end of the self-locking circuit
  • M1 continues to output the second reference voltage due to M2 While continuing to open, M1 continuously outputs the first reference voltage to the output terminal of the self-locking circuit 340.
  • M1 is an NMOS tube, which is turned on when the NMOS tube is at a relatively high level, and is turned off when the relative low level
  • M2 is a PMOS tube, which is turned on at a relatively low level, and turned off when the relative high level
  • the first reference voltage is a low level , May be grounded, or may be a relatively low level
  • the second reference voltage is a high level, and similarly, the high level may also be a relatively high level.
  • the current detection circuit 330 outputs a detection signal according to the current size of the output driving signal.
  • the current detection circuit 330 When the current at the output terminal is detected to be less than the preset threshold, the current detection circuit 330 outputs the first reference signal.
  • the current detection circuit 330 When the current at the output terminal is greater than the preset threshold, the current detection circuit 330 outputs the second reference signal; when the M1 control terminal receives the first reference signal, M1 is turned off, and the M2 control terminal receives the second reference signal, M2 is turned off, when M1 controls
  • M1 is turned on, the M1 input terminal inputs the first reference signal, the M1 output terminal outputs the first reference signal to the control terminal of M2, M2 is turned on, and outputs the second reference signal to the control terminal of M1 , M1 is turned on, M1 is turned on, and the first reference signal is output to M2.
  • M1 continuously outputs the first reference signal to the output end of the self-locking circuit 340, and the self-locking circuit
  • a first resistor (R1) is connected between the control terminal of M1 and the input terminal of M1.
  • R1 protects M1 when the control terminal of M1 receives a high level.
  • R1 is between the input end of M1 and the control end. When the control end of M1 receives a high level, it can prevent M1 from being damaged due to excessive current, ensuring the normal operation of M1.
  • the current detection circuit 330 further includes: a sense resistor (Rs) connected in series between the output terminal of the potential booster circuit and the output terminal of the booster circuit 310; a first voltage acquisition that collects the first voltage at the output terminal of the potential booster circuit Circuit; a second voltage acquisition circuit that collects the second voltage at the output of the booster circuit; a comparison circuit (Operational), which compares the difference between the first voltage and the second voltage with a preset threshold.
  • Rs sense resistor
  • the first detection signal When it is greater than a preset threshold, the first detection signal is output to the main control circuit 311; when the difference is less than a preset threshold, the second detection signal is output; wherein, the first voltage acquisition circuit and the second voltage acquisition circuit are The circuit connected at both ends of the sensing resistor obtains the voltage across the sensing resistor and sends it to the comparison circuit; the comparison circuit is an operational amplifier and is a subtraction circuit.
  • the current detection circuit 330 detects the current by: setting an Rs between the output terminal of the potential boosting circuit and the output terminal of the boosting circuit 310, and setting the first voltage obtaining circuit and the second voltage respectively at both ends of the Rs
  • the acquisition circuit collects the voltage across the Rs through two voltage acquisition modules, and then obtains the difference between the two ends of the voltage through the comparison circuit.
  • the first voltage acquisition circuit includes a fourth resistor (R4) and a fifth resistor (R5); the second voltage acquisition circuit includes a sixth resistor (R6); R4 and R5 are connected in series to the output terminal of the booster circuit and the low power Normally, the first voltage acquisition circuit collects the first voltage of the output terminal of the potential boosting circuit 312; the first input terminal of the OP is connected between R4 and R5, and outputs the voltage acquired by the first voltage acquisition circuit to the OP The first input terminal; R6 is connected between the second input terminal of the OP and the output terminal of the booster circuit 310, so that the second voltage acquisition circuit acquires the voltage of the output terminal of the booster circuit; the current detection circuit further includes a seventh resistor (R7 ), R7 is connected between the second input end and the output end of the OP.
  • R7 seventh resistor
  • the preset threshold of the current detection circuit 330 can be adjusted according to actual needs.
  • Vout is the voltage difference between V1 and V2. Therefore, the detection signal output by the current detection circuit 330 is the voltage difference between the two ends of Rs. Since the voltage is proportional to the current, the current of the driving signal can be obtained by the voltage difference of Rs. Current exceeding a preset threshold.
  • a third resistor (R3) is provided between the input terminal of the self-locking circuit 340 and the output terminal of the current detection circuit 330.
  • R3 can protect OP. When M2 outputs high level, if OP outputs low level, it will make M2 have reverse current. If there is no R3, the current is output to OP, it is easy to damage OP, so the setting of R3 can protect OP prevents the high-level voltage output by M2 from being output to the OP, so that the OP is easily burned and damaged when receiving the high-level voltage.
  • FIG. 2 is a flowchart of a method for boosting control of a display panel.
  • a boosting circuit 310 of the above display panel 200 is disclosed Control method, including steps:
  • the potential raising circuit receives the input signal, and raises the potential of the input signal to generate a driving signal
  • S3 Determine whether the real-time current value of the drive signal output from the output terminal of the booster circuit exceeds the preset threshold
  • step of S5 includes:
  • the main control circuit controls the potential boosting circuit to stop outputting the driving signal, and the boosting circuit stops outputting the driving signal.
  • This solution is an overcurrent protection method for the display panel 200.
  • the input signal is received, the potential of the input signal is raised, and the driving signal is output to the output end of the booster circuit 310, and then
  • the output end of the circuit 310 is provided with a current detection circuit 330, which detects the real-time current value of the driving signal through the current detection circuit 330, and controls whether the booster circuit 310 outputs the drive signal according to the size of the real-time current value and the preset threshold.
  • the boosting circuit 310 is controlled to stop outputting the driving signal and continue to stop outputting the driving signal.
  • a display device 100 including: a display panel 200, a drive circuit 300 driving the display panel 200; the drive circuit 300 includes a boost circuit; the boost circuit includes: input The potential increase of the signal generates a drive signal, and outputs the drive signal to the potential increase circuit of the output end of the boost circuit; the current detection circuit that detects the real-time current value of the drive signal output by the potential increase circuit and outputs the corresponding detection signal; And a main control circuit connected to the potential boosting circuit, and detecting that the detection signal output by the current detection circuit meets a preset condition, the main control circuit controls the boosting circuit to stop outputting the driving signal.
  • the driving circuit 300 includes a gate driving circuit
  • the gate driving circuit includes a shift circuit 320, and a boosting circuit 310
  • the boosting circuit 310 may be disposed on a circuit board, and outputs a boosted driving signal to the shift Circuit
  • the shift circuit 320 may be formed on the display panel, or may be provided on the circuit board together with the booster circuit to provide scan signals to the scan lines of the display panel 200.
  • the shift circuit 320 of the gate driving circuit is disposed on the display panel 200, which reduces the volume of the circuit board. This design can further compress the frame length of the display panel 200, which is beneficial to reduce the width of the black frame of the display panel 200.
  • TN panel full name Twisted Nematic, namely twisted nematic panel
  • IPS panel In-Pane Switching
  • MVA panel Multi-domain Vertical Alignment, multi-quadrant vertical alignment

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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)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

公开了一种显示面板的升压电路、升压控制方法和显示装置，显示面板的升压电路（310）包括将输入信号的电位提升生成驱动信号的电位提升电路（312）；侦测驱动信号的实时电流值并输出相应的侦测信号的电流侦测电路（330）；以及与电位提升电路（312）控制连接的主控电路（311）；电位提升电路（312）输出驱动信号到升压电路（310）输出端，电流侦测电路（330）输出的侦测信号满足预设条件时，主控电路（311）控制升压电路（310）停止输出驱动信号。

Description

显示面板的升压电路、升压控制方法和显示装置
本申请要求于2018年12月27日提交中国专利局，申请号为CN201811607343.9，发明名称为“一种显示面板的升压电路、升压控制方法及其显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，尤其涉及一种显示面板的升压电路、升压控制方法和显示装置。
背景技术
这里的陈述仅提供与本申请有关的背景信息，而不必然地构成现有技术。
随着科技的发展和进步，平板显示器由于具备机身薄、省电和辐射低等热点而成为显示器的主流产品，得到了广泛应用。如今随着大众对电视窄边框的需求越来越强烈，一种新型的门极驱动架构(Gate driver less，GDL)正越来越受到欢迎。但是液晶面板要将门极驱动芯片(Gate Integrated Circuit，Gate IC)绑定在面板上，而Gate IC的尺寸限制了边框的进一步缩窄。但近些年随着新型GDL(Gate driver less)技术的问世，GDL电路将原本的Gate IC拆分成升压IC(level shifter IC)和移位寄存器(shift register)两部分，level shifter IC做在驱动板上，shift register做在了面板上，level shifter IC输送时钟信号(CLK)给shift register完成驱动，这样便不用Gate IC了，因此可以进一步压缩边框长度。
但是由于生产制程的原因，显示面板在使用过程中，电路短路或出现其他异常时，会导致显示面板内电流瞬间电流过大，显示面板可能出现芯片烧坏或烧屏的情况。
发明内容
本申请提供一种显示面板的升压电路、升压控制方法和显示装置，改善瞬间电流过大导致烧坏屏幕的情况。
本申请还公开了一种显示面板的升压电路，包括：将输入信号的电位提升生成驱动信号的电位提升电路；侦测所述电位提升电路输出的驱动信号的实时电流值，输出相应的侦测信号的电流侦测电路；与所述电位提升电路控制连接的主控电路；当检测到所述电流侦测电路输出的侦测信号满足预设条件时，所述主控电路控制升压电路停止输出驱动信号。
可选的，所述电流侦测电路和所述主控电路之间还设置有自锁电路；所述自锁电路接收所述的电流侦测电路输出的侦测信号，在检测到所述侦测信号满足所述预设条件后，所述自 锁电路持续输出一自锁信号给所述主控电路；所述主控电路控制升压电路停止输出驱动信号。
可选的，所述电流侦测电路侦测到驱动信号的电流值小于等于预设阈值时，输出第一参考电压给所述自锁电路；所述电流侦测电路在侦测到电流值大于预设阈值时，输出第二参考电压给所述自锁电路。
可选的，所述自锁电路包括第一开关和第二开关；所述第一开关的控制端与自锁电路的输入端连接，所述第一参考电压输入到所述第一开关的输入端；第一开关的输出端连接到第二开关的控制端和所述自锁电路的输出端；所述第二参考电压输入到所述第二开关的输入端，所述第二开关的输出端连接至第一开关的控制端；所述第二开关的控制端与第二开关的输入端之间连接有第二电阻。
可选的，当所述自锁电路的输入端输入所述电流侦测电路输出的第一参考电压时，所述第一开关关断，所述第二开关关断；所述自锁电路输出第二参考电压。
可选的，当所述自锁电路的输入端输入所述电流侦测电路输出的第二参考电压时，所述第一开关打开，所述第一开关输出第一参考电压给所述第二开关的控制端和主控电路，控制所述主控电路关闭，同时所述第二开关打开，并持续输出第二参考电压给所述第一开关的控制端。
可选的，所述第一开关的控制端与第一开关的输入端之间连接有第一电阻。
可选的，所述的电流侦测电路包括：串联在所述电位提升电路的输出端与所述升压电路的输出端之间的感应电阻；采集所述电位提升电路的输出端的第一电压的第一电压获取电路；采集所述升压电路的输出端的第二电压的第二电压获取电路；将所述第一电压和第二电压的差值与一预设阈值比较的比较电路，在所述差值大于一预设阈值时，输出第一侦测信号给所述主控电路；在所述差值小于一预设阈值时，输出第二侦测信号。
可选的，所述比较电路为运算放大器，所述运算放大器的运算方法为减法运算。
可选的，所述第一电压获取电路包括第四电阻和第五电阻；所述第二电压获取电路包括第六电阻；所述第四电阻和第五电阻串联接入所述升压电路的输出端与低电平之间，使所述第一电压获取电路采集所述电位提升电路的输出端的第一电压；所述比较电路的第一输入端接入所述第四电阻与第五电阻之间，将所述第一电压获取电路获取到的电压输出到所述比较电路的第一输入端；；所述第六电阻接入所述比较电路的第二输入端与升压电路的输出端之间，使第二电压获取电路获取升压电路输出端的电压；
可选的，所述电流侦测电路还包括第七电阻，所述第七电阻接入所述比较电路的第二输入端与输出端之间。
可选的，所述第四电阻、第五电阻、第六电阻和第七电阻的阻值相同。
可选的，所述第四电阻、第五电阻、第六电阻和第七电阻的阻值不同。
可选的，所述自锁电路的输入端与所述电流侦测电路的输出端之间设有第三电阻。
本申请还提供一种如上所述显示面板的升压电路的升压控制方法，包括步骤：
电位提升电路接收输入信号，将输入信号的电位提升生成驱动信号；
侦测所述电位提升电路输出的驱动信号的实时电流值；
判断检测到升压电路的输出端输出的驱动信号的实时电流值是否超出预设阈值；当检测到所述实时电流值没有超出预设阈值时没有超出时，电位提升电路正常输出驱动信号；当检测到所述实时电流值超出预设阈值时，控制电位提升电路停止输出驱动信号。
可选的，所述判断检测到升压电路的输出端输出的驱动信号的实时电流值是否超出预设阈值；当检测到所述实时电流值没有超出预设阈值时没有超出时，电位提升电路正常输出驱动信号；当检测到所述实时电流值超出预设阈值时，控制电位提升电路停止输出驱动信号的步骤中：
当检测到所述实时电流值超出预设阈值时，自锁电路持续输出第二参考电压到主控电路，所述主控电路控制所述电位提升电路停止输出驱动信号。
本申请还提供一种显示装置，包括：显示面板，驱动所述显示面板的驱动电路；所述驱动电路包括升压电路；所述升压电路包括：将输入信号的电位提升生成驱动信号，输出驱动信号到升压电路的输出端的电位提升电路；侦测所述电位提升电路输出的驱动信号的实时电流值，输出相应的侦测信号的电流侦测电路；以及与所述电位提升电路控制连接的主控电路，检测到所述电流侦测电路输出的侦测信号满足预设条件时，所述主控电路控制升压电路停止输出驱动信号。
可选的，所述的驱动电路包括门极驱动电路，所述门极驱动电路包括：移位电路，及所述的升压电路；所述移位电路形成在所述的显示面板上，给所述的显示面板的扫描线提供扫描信号。
相对于显示面板在使用过程中，电路短路或出现其他异常时，会导致显示面板内电流瞬间电流过大，显示面板可能出现芯片烧坏或烧屏的情况；而本方案在提升电压的升压电路内加设电流侦测电路，侦测升压电路的输出端的实时电流值，当实时电流超出一预设阈值时，即输出满足预设条件的侦测信号，触发主控电路控制升压电路停止输出驱动信号；这样的设计，即使是瞬间出现的大电流时都可以进行停止升压的防护，保护的效果非常好。
附图说明
所包括的附图用来提供对本申请实施例的进一步的理解，其构成了说明书的一部分，用于例示本申请的实施方式，并与文字描述一起来阐释本申请的原理。显而易见地，下面描述 中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是本申请实施例一种显示面板的升压电路的示意图；
图2是本申请实施例一种显示面板的过流保护方法的流程示意图；
图3是本申请实施例一种显示装置的示意图。
具体实施方式
这里所公开的具体结构和功能细节仅仅是代表性的，并且是用于描述本申请的示例性实施例的目的。但是本申请可以通过许多替换形式来具体实现，并且不应当被解释成仅仅受限于这里所阐述的实施例。
在本申请的描述中，需要理解的是，术语“中心”、“横向”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，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该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。另外，术语“包括”及其任何变形，意图在于覆盖不排他的包含。
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；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。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
这里所使用的术语仅仅是为了描述具体实施例而不意图限制示例性实施例。除非上下文明确地另有所指，否则这里所使用的单数形式“一个”、“一项”还意图包括复数。还应当理解的是，这里所使用的术语“包括”和/或“包含”规定所陈述的特征、整数、步骤、操作、单元和/或组件的存在，而不排除存在或添加一个或更多其他特征、整数、步骤、操作、单元、组件和/或其组合。
下面参考附图和可选的实施例对本申请作进一步说明。
如图1所示，本申请实施例公布了一种显示面板的升压电路310，包括：将输入信号的电位提升生成驱动信号的电位提升电路312；侦测电位提升电路312输出驱动信号的实时电流值的电流侦测电路330，并输出相应的侦测信号；与电位提升电路312控制连接的主控电 路311，当检测到电流侦测电路输出的侦测信号满足预设条件时，主控电路311控制升压电路310停止输出驱动信号。
若显示面板在使用过程中，出现电路短路或其他异常情况时，会导致显示面板内电流瞬间增大，一旦超出显示面板本身的电流保护值后，显示面板可能出现芯片烧坏或烧屏的情况；而本方案在提升电压的升压电路310内加设电流侦测电路，侦测输出端的实时电流值，当实时电流超出一预设阈值(预设阈值为：设定一个具体的电流值，例如设定电流值为1安培，当电流超出1安培时，满足条件)时，即输出满足预设条件的侦测信号(满足预设条件为：电流值是否达到能够检测的电流值，当到达一电流值时，满足条件)，触发主控电路311控制升压电路310停止输出驱动信号；这样的设计，即使是瞬间出现的大电流时都可以进行停止升压的防护，保护的效果非常好。
其中，在电流侦测电路330和主控电路311之间还设置有自锁电路340；自锁电路340接收电流侦测电路330输出的侦测信号，在检测到侦测信号满足所述的预设条件后，自锁电路340持续输出一自锁信号给主控电路311；主控电路311控制升压电路310停止输出驱动信号；其中的预设逻辑为，电流侦测电路330检测电位提升电路312输出的电流是否超出某一设定的阈值。
自锁电路340在检测到侦测信号满足所述预设条件时，电流侦测电路330侦测到升压电路310的输出端的电流瞬间过大，自锁电路340输出自锁信号，之后，当升压电路310的输出端的电流恢复正常，自锁电路340持续输出一自锁信号，不会因电流侦测电路330输出的波动持续变化，控制主控电路311持续的停止输出驱动信号，无法自行恢复，以便提醒及时检查，避免造成诸如烧屏甚至失火等更严重的后果。
在电流侦测电路330侦测到驱动信号的电流值小于等于预设阈值时，输出第一参考电压给自锁电路340；电流侦测电路330在侦测到输出端的电流大于预设阈值时，输出第二参考电压给自锁电路340；自锁电路340包括：第一开关(M1)和第二开关(M2)；M1的控制端与自锁电路340的输入端连接，第一参考电压输入到M1的输入端；M1的输出端连接到M2的控制端和整个自锁电路340的输出端；第二参考电压输出到M2的输入端，M2的输出端连接至M1的控制端；M2的控制端与M2的输入端之间连接有R2；当自锁电路340的输入端输入电流侦测电路输出的第一参考电压时，M1关断，M2关断；自锁电路340输出第二参考电压；当自锁电路340的输入端输入电流侦测电路输出的第二参考电压时，M1打开，M1输出第一参考电压给M2的控制端和主控电路311，控制主控电路311关闭，同时M2打开，并输出第二参考电压给M1的控制端。使得不管自锁电路340输入端在电流侦测电路330输入一次高电平信号之后，无论电流侦测电路330再输入高电平或低电平信号，M1都因M2持续输出的第二参考电压而持续打开，M1给自锁电路340的输出端持续输出第一参 考电压。其中M1为NMOS管，在NMOS管在相对的高电平时打开，相对低电平时关闭；M2为PMOS管，在相对低电平时打开，在相对高电平时关闭；第一参考电压为低电平，可能为接地，也可以是相对的低电平；第二参考电压为高电平，同样高电平也可以是相对的高电平。
电流侦测电路330根据输出的驱动信号的电流大小，会相应的输出侦测信号，当侦测到输出端的电流小于预设阈值时，电流侦测电路330输出第一参考信号，当侦测到输出端的电流大于预设阈值时，电流侦测电路330输出第二参考信号；当M1控制端接收第一参考信号时，M1关闭，M2的控制端接收第二参考信号，M2关闭，当M1控制端接收第二参考信号时，M1打开，M1的输入端输入第一参考信号，M1输出端输出第一参考信号到M2的控制端，M2打开，并输出第二参考信号，到M1的控制端，M1打开，M1打开，并输出第一参考信号到M2，如此循环，M1持续输出第一参考信号到自锁电路340的输出端，自锁电路340持续输出第一参考信号。
其中，M1的控制端与M1的输入端之间连接有第一电阻(R1)，R1在M1的控制端接收高电平时，保护M1。R1在M1的输入端与控制端之间，当M1的控制端接收高电平时，可以防止M1由于过大的电流导致M1损坏，保证了M1的正常运行。
其中，电流侦测电路330还包括：串联在电位提升电路的输出端与升压电路310的输出端之间的感应电阻(Rs)；采集电位提升电路的输出端的第一电压的第一电压获取电路；采集升压电路的输出端的第二电压的第二电压获取电路；比较电路(Operational amplifier，OP)，将第一电压和第二电压的差值与一预设阈值进行比较，在差值大于一预设阈值时，输出第一侦测信号给主控电路311；在差值小于一预设阈值时，输出第二侦测信号；其中，第一电压获取电路和第二电压获取电路为连接在感应电阻两端的电路，获取感应电阻两端的电压，输送到比较电路；比较电路为运算放大器，且为减法电路。
其中，电流侦测电路330侦测电流的方法为：在电位提升电路的输出端与升压电路310的输出端之间设置一Rs，在Rs两端分别设置第一电压获取电路和第二电压获取电路，通过两个电压获取模块，采集Rs两端的电压，再通过比较电路得出两端电压的差值，通过电压差值与预设阈值的比较，当电压差值大于一预设阈值时，输出第一侦测信号给主控电路311，在电压差值小于一预设阈值时，输出第二侦测信号。
其中，第一电压获取电路包括第四电阻(R4)和第五电阻(R5)；第二电压获取电路包括第六电阻(R6)；R4和R5串联接入升压电路的输出端与低电平之间，使第一电压获取电路采集电位提升电路312的输出端的第一电压；OP的第一输入端接入R4与R5之间，将第一电压获取电路获取到的电压输出到OP的第一输入端；R6接入OP的第二输入端与升压电路310的输出端之间，使第二电压获取电路获取升压电路输出端的电压；电流侦测电路还包 括第七电阻(R7)，R7接入OP的第二输入端与输出端之间。
通过调整各个电阻的阻值，可以根据实际需要来调整电流侦测电路330的预设阈值，R4、R5、R6、R7可以设置为相等的阻值也可以设置不同阻值；在电流侦测电路330中，OP输出的电流侦测信号的算法为：R4、R5、R6、R7设置为相等的阻值；假设第一电压为V1第二电压为V2、第一输入端电压为V+、第二输入端电压为V-、OP输出电压为Vout，OP是一个减法电路，OP的正极性输入端V+是V1经R4和R5分压得到，两个电阻阻值相同，所以V+＝(V1)/2；而OP的负极性第二输入端V-是实际输出V2与OP输出Vout做差得到，V-＝V2-(V2-Vout)/2＝(V2+Vout)/2，而根据OP的特性，V+＝V-，所以有(V1)/2＝(V2+Vout)/2，即V1＝V2+Vout，最终得到Vout＝V1-V2。Vout就是V1与V2的压差，因此电流侦测电路330输出的侦测信号为Rs两端的电压差值，由于电压与电流成正比例关系，因此通过Rs电压差值即可得到驱动信号的电流是否超出预设阈值的电流。
在所述自锁电路340的输入端与所述电流侦测电路330的输出端之间设有第三电阻(R3)。R3可以保护OP，当M2输出高电平时，若OP输出的是低电平，会使得M2有反向电流，若无R3，电流输出到OP，容易使OP损坏，因此R3的设置，可以保护OP,防止M2输出的高电平电压输出到OP，使OP在接收到高电平电压时容易烧毁损坏。
图2为一种显示面板的升压控制方法流程图，参考图2，结合图1可知，作为本申请的另一实施例，公开了一种如上的显示面板200的升压电路310的升压控制方法，包括步骤：
S1：电位提升电路接收输入信号，将输入信号的电位提升生成驱动信号；
S2：侦测所述电位提升电路输出的驱动信号的实时电流值；
S3：判断检测到升压电路的输出端输出的驱动信号的实时电流值是否超出预设阈值；
S4：当检测到所述实时电流值没有超出预设阈值时没有超出时，电位提升电路正常输出驱动信号；
S5：当检测到所述实时电流值超出预设阈值时，控制电位提升电路停止输出驱动信号；
其中，所述S5的步骤包括：
S51：当检测到所述实时电流值超出预设阈值时，自锁电路持续输出低电平作为第一参考电压到主控电路；
S52：所述主控电路控制所述电位提升电路停止输出驱动信号，升压电路停止输出驱动信号。
本方案为一种显示面板200的过流保护方法，在升压电路310中，接收输入的信号，并将输入信号的电位提升，输出驱动信号到升压电路310的输出端，再在升压电路310的输出端设置一电流侦测电路330，通过电流侦测电路330侦测驱动信号的实时电流值，根据实时电流值与预设阈值的大小控制升压电路310是否输出驱动信号，当检测到侦测升压电路310 的输出端输出的驱动信号的实时电流值超出预设阈值时，控制升压电路310停止输出驱动信号，并持续停止输出驱动信号。
参考图3所示，公开了一种显示装置100，包括：显示面板200，驱动所述显示面板200的驱动电路300；所述驱动电路300包括升压电路；所述升压电路包括：将输入信号的电位提升生成驱动信号，输出驱动信号到升压电路的输出端的电位提升电路；侦测所述电位提升电路输出的驱动信号的实时电流值，输出相应的侦测信号的电流侦测电路；以及与所述电位提升电路控制连接的主控电路，检测到所述电流侦测电路输出的侦测信号满足预设条件时，所述主控电路控制升压电路停止输出驱动信号。
其中，驱动电路300包括门极驱动电路，门极驱动电路包括移位电路320，以及升压电路310，其中，升压电路310可以设置在电路板上，输出升压后的驱动信号给移位电路；移位电路320可以形成在显示面板上，也可以与升压电路一起设置在电路板上，给显示面板200的扫描线提供扫描信号。所述门极驱动电路的移位电路320设置在显示面板200上，减少了电路板的体积，这种设计可以进一步压缩显示面板200的边框长度，有利于减少显示面板200的黑边框宽度。
需要说明的是，本方案中涉及到的各步骤的限定，在不影响具体方案实施的前提下，并不认定为对步骤先后顺序做出限定，写在前面的步骤可以是在先执行的，也可以是在后执行的，甚至也可以是同时执行的，只要能实施本方案，都应当视为属于本申请的保护范围。
本申请的技术方案可以广泛用于TN面板(全称为Twisted Nematic，即扭曲向列型面板)、IPS面板(In-Pane Switching，平面转换)、MVA面板(Multi-domain Vertical Alignment，多象限垂直配向技术)，当然，也可以是其他类型的面板，适用即可。
以上内容是结合具体的可选实施方式对本申请所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本申请的保护范围。

Claims (18)

  1. 一种显示面板的升压电路，包括：
    电位提升电路，将输入信号的电位提升生成驱动信号；
    电流侦测电路，侦测所述电位提升电路输出的驱动信号的实时电流值，输出相应的侦测信号；以及
    主控电路，与所述电位提升电路控制连接；检测到所述电流侦测电路输出的侦测信号满足预设条件时，所述主控电路控制升压电路停止输出驱动信号。
  2. 如权利要求1所述的显示面板的升压电路，其中，所述电流侦测电路和所述主控电路之间还设置有自锁电路；
    所述自锁电路接收所述的电流侦测电路输出的侦测信号，在检测到所述侦测信号满足所述的预设条件后，所述自锁电路持续输出一自锁信号给所述主控电路；所述主控电路控制升压电路停止输出驱动信号。
  3. 如权利要求2所述的显示面板的升压电路，其中，所述电流侦测电路侦测到驱动信号的电流值小于等于预设阈值时，输出第一参考电压给所述自锁电路；
    所述电流侦测电路在侦测到电流值大于预设阈值时，输出第二参考电压给所述自锁电路。
  4. 如权利要求3所述的显示面板的升压电路，其中，所述自锁电路包括：第一开关和第二开关；
    所述第一开关的控制端与自锁电路的输入端连接，所述第一参考电压输入到所述第一开关的输入端；第一开关的输出端连接到第二开关的控制端和所述自锁电路的输出端；
    所述第二参考电压输入到所述第二开关的输入端，所述第二开关的输出端连接至第一开关的控制端；所述第二开关的控制端与第二开关的输入端之间连接有第二电阻。
  5. 如权利要求4所述的显示面板的升压电路，其中，当所述自锁电路的输入端输入所述电流侦测电路输出的第一参考电压时，所述第一开关关断，所述第二开关关断；所述自锁电路输出第二参考电压。
  6. 如权利要求4所述的显示面板的升压电路，其中，当所述自锁电路的输入端输入所述电流侦测电路输出的第二参考电压时，所述第一开关打开，所述第一开关输出第一参考电压给所述第二开关的控制端和主控电路，控制所述主控电路关闭，同时所述第二开关打开，并持续输出第二参考电压给所述第一开关的控制端。
  7. 如权利要求1所述的显示面板的升压电路，其中，所述第一开关的控制端与第一开关的输入端之间连接有第一电阻。
  8. 如权利要求1所述的显示面板的升压电路，其中，所述的电流侦测电路包括：
    感应电阻，串联在所述电位提升电路的输出端与所述升压电路的输出端之间；
    第一电压获取电路，采集所述电位提升电路的输出端的第一电压；
    第二电压获取电路，采集所述升压电路的输出端的第二电压；以及
    比较电路，将第一电压和第二电压的差值与一预设阈值进行比较，在所述差值大于一预设阈值时，输出第一侦测信号给所述主控电路；在所述差值小于一预设阈值时，输出第二侦测信号。
  9. 如权利要求8所述的显示面板的升压电路，其中，所述比较电路为运算放大器，所述运算放大器的运算方法为减法运算。
  10. 如权利要求8所述的显示面板的升压电路，其中，所述第一电压获取电路包括第四电阻和第五电阻；
    所述第二电压获取电路包括第六电阻；
    所述第四电阻和第五电阻串联接入所述升压电路的输出端与低电平之间，使所述第一电压获取电路采集所述电位提升电路的输出端的第一电压；
    所述比较电路的第一输入端接入所述第四电阻与第五电阻之间，将所述第一电压获取电路获取到的电压输出到所述比较电路的第一输入端；
    所述第六电阻接入所述比较电路的第二输入端与升压电路的输出端之间，使第二电压获取电路获取升压电路输出端的电压。
  11. 如权利要求10所述的显示面板的升压电路，其中，所述电流侦测电路还包括第七电阻，所述第七电阻接入所述比较电路的第二输入端与输出端之间。
  12. 如权利要求11所述的显示面板的升压电路，其中，所述第四电阻、第五电阻、第六电阻和第七电阻的阻值相同。
  13. 如权利要求11所述的显示面板的升压电路，其中，所述第四电阻、第五电阻、第六电阻和第七电阻的阻值不同。
  14. 如权利要求4所述的显示面板的升压电路，其中，所述自锁电路的输入端与所述电流侦测电路的输出端之间设有第三电阻。
  15. 一种显示面板的升压电路的升压控制方法，包括步骤：
    电位提升电路接收输入信号，将输入信号的电位提升生成驱动信号；
    侦测所述电位提升电路输出的驱动信号的实时电流值；
    判断检测到升压电路的输出端输出的驱动信号的实时电流值是否超出预设阈值；当检测到所述实时电流值没有超出预设阈值时没有超出时，电位提升电路正常输出驱动信号；当检测到所述实时电流值超出预设阈值时，控制电位提升电路停止输出驱动信号。
  16. 如权利要求15所述的升压控制方法，其中，所述判断检测到升压电路的输出端输出的驱动信号的实时电流值是否超出预设阈值；当检测到所述实时电流值没有超出预设阈值时没有超出时，电位提升电路正常输出驱动信号；当检测到所述实时电流值超出预设阈值时，控制电位提升电路停止输出驱动信号的步骤中：
    当检测到所述实时电流值超出预设阈值时，自锁电路持续输出第二参考电压到主控电路，所述主控电路控制所述电位提升电路停止输出驱动信号。
  17. 一种显示装置，包括：
    显示面板；
    驱动电路，驱动所述显示面板；所述驱动电路包括升压电路；
    所述升压电路包括：
    电位提升电路，将输入信号的电位提升生成驱动信号，输出驱动信号到升压电路的输出端；
    电流侦测电路，侦测所述电位提升电路输出的驱动信号的实时电流值，输出相应的侦测信号；以及
    主控电路，与所述电位提升电路控制连接，检测到所述电流侦测电路输出的侦测信号满足预设条件时，所述主控电路控制升压电路停止输出驱动信号。
  18. 如权利要求17所述的一种显示装置，其中，所述的驱动电路包括门极驱动电路，所述门极驱动电路包括：
    移位电路，及所述的升压电路；
    所述移位电路形成在所述的显示面板上，给所述的显示面板的扫描线提供扫描信号。
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