WO2019061682A1 - 液晶显示面板及开关机控制电路 - Google Patents
液晶显示面板及开关机控制电路 Download PDFInfo
- Publication number
- WO2019061682A1 WO2019061682A1 PCT/CN2017/109526 CN2017109526W WO2019061682A1 WO 2019061682 A1 WO2019061682 A1 WO 2019061682A1 CN 2017109526 W CN2017109526 W CN 2017109526W WO 2019061682 A1 WO2019061682 A1 WO 2019061682A1
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- WIPO (PCT)
- Prior art keywords
- module
- output
- overcurrent protection
- capacitor
- triode
- Prior art date
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Classifications
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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
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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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/025—Reduction of instantaneous peaks of current
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/026—Arrangements or methods related to booting a display
-
- 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
- G09G2330/027—Arrangements or methods related to powering off a display
Definitions
- the present invention relates to the field of liquid crystal display technologies, and in particular, to a switch control circuit and a liquid crystal display panel having the switch control circuit.
- the existing liquid crystal display panel is prone to overcurrent protection caused by an increase in current when the power is turned on and off, and the panel cannot be normally turned on and off.
- the invention provides a switch machine control circuit, which can prevent the panel from being accidentally activated and over-current protection when the switch is turned on and off, thereby realizing the normal startup and shutdown of the panel, so as to solve the existing liquid crystal display panel, the current increase during the switch is easy to cause Flow protection, which causes the panel to fail to properly switch the machine.
- the invention provides a switch control circuit comprising:
- a level conversion module is connected to an output end of the pulse width modulation module, and a current source is disposed in the level conversion module;
- a capacitor having an input coupled to an output of the current source, the current source providing a constant current level to the capacitor;
- An overcurrent protection module connected to an output of the level conversion module
- control module configured to enable or disable an overcurrent protection function of the overcurrent protection module within a set time
- the control module includes a switching device, and an input end of the switching device is connected to an output end of the capacitor The output end of the switching device is connected to the control end of the overcurrent protection module;
- the set time is a predetermined time from the time corresponding to the power on operation or the shutdown operation.
- the switching device is a comparator, and the comparator includes a forward input terminal, an inverse input terminal, and an output terminal;
- a forward input of the comparator is coupled to an output of the capacitor, an inverting input of the comparator is coupled to a reference voltage, and an output of the comparator is coupled to the overcurrent protection module.
- the switching device is a triode, and the triode includes an input end, an output end, and a control end;
- the control end of the triode is connected to the output end of the capacitor, the input end of the triode is connected to a starting power source, and the output end of the triode is connected to the overcurrent protection module.
- the output of the overcurrent protection module is connected to the GOA drive circuit.
- the invention also provides a switch control circuit comprising:
- a level conversion module is connected to an output end of the pulse width modulation module, and a current source is disposed in the level conversion module;
- a capacitor having an input coupled to an output of the current source, the current source providing a constant current level to the capacitor;
- An overcurrent protection module connected to an output of the level conversion module
- control module configured to enable or disable an overcurrent protection function of the overcurrent protection module within a set time
- the control module includes a switching device, and an input end of the switching device is connected to an output end of the capacitor The output end of the switching device is connected to the control end of the overcurrent protection module.
- the switching device is a comparator, and the comparator includes a forward input terminal, an inverse input terminal, and an output terminal;
- a forward input of the comparator is coupled to an output of the capacitor, an inverting input of the comparator is coupled to a reference voltage, and an output of the comparator is coupled to the overcurrent protection module.
- the switching device is a triode, and the triode includes an input end, an output end, and a control end;
- the control end of the triode is connected to the output end of the capacitor, the input end of the triode is connected to a starting power source, and the output end of the triode is connected to the overcurrent protection module.
- the output of the overcurrent protection module is connected to the GOA drive circuit.
- a liquid crystal display panel includes a display panel main body and a switch control circuit; the switch control circuit includes:
- a level conversion module is connected to an output end of the pulse width modulation module, and a current source is disposed in the level conversion module;
- a capacitor having an input coupled to an output of the current source, the current source providing a constant current level to the capacitor;
- An overcurrent protection module connected to an output of the level conversion module
- control module configured to enable or disable an overcurrent protection function of the overcurrent protection module within a set time
- the control module includes a switching device, and an input end of the switching device is connected to an output end of the capacitor The output end of the switching device is connected to the control end of the overcurrent protection module.
- the switching device is a comparator, and the comparator includes a forward input terminal, an inverse input terminal, and an output terminal;
- a forward input of the comparator is coupled to an output of the capacitor, an inverting input of the comparator is coupled to a reference voltage, and an output of the comparator is coupled to the overcurrent protection module.
- the switching device is a triode, and the triode includes an input end, an output end, and a control end;
- the control end of the triode is connected to the output end of the capacitor, the input end of the triode is connected to a starting power source, and the output end of the triode is connected to the overcurrent protection module.
- the set time is a predetermined time from a time corresponding to a power-on operation or a power-off operation.
- the output of the overcurrent protection module is connected to the GOA drive circuit.
- the switch control circuit of the present invention controls the overcurrent protection circuit to be turned on by setting a control module in the switch control circuit, thereby realizing The normal switching machine of the panel; solves the existing liquid crystal display panel, and there is a problem that the current is increased due to the current increase and the overcurrent protection is caused, and the panel cannot be normally turned on and off.
- FIG. 1 is a schematic diagram of the working principle of the control circuit of the switch machine of the present invention.
- the present invention is directed to the prior art liquid crystal display panel, and there is a technical problem that an overcurrent protection is caused by an increase in current when the power is turned on and off, and the panel cannot be normally turned on and off. This embodiment can solve the defect.
- the switch control circuit of the present invention includes a pulse width modulation module 101 for generating a pulse signal of variable pulse width, and a level conversion module 105 for implementing the input.
- the current is converted between a high level and a low level;
- a current source 1051 is disposed in the level converting module 105, the current source 1051 is configured to provide a constant current level;
- the capacitor 104 is disposed at the level shifting Outside the module 105, an input of the capacitor 104 is coupled to an output of the current source 1051, and the capacitor 104 is charged by the current source 1051, and an output of the capacitor 104 outputs a control signal.
- the switch control circuit further includes an overcurrent protection module 102.
- the overcurrent protection module 102 is connected to the level conversion module 105.
- the level conversion module 105 and the overcurrent protection module 102 are provided with control.
- the module 103, the control module 103 includes at least one switching device 1031, an input end of the switching device 1031 is connected to an output end of the capacitor 104, and an output end of the switching device 1031 is connected to the control of the overcurrent protection module 102. end.
- the output of the overcurrent protection module 102 is connected to a GOA for driving pixel display (Gate Driver on Array, array substrate row driving technology), the overcurrent protection module 102 can pull down current and output when an instantaneous large current passes to protect the GOA circuit from overload current.
- GOA Gate Driver on Array, array substrate row driving technology
- the control module 103 is configured to enable or disable the overcurrent protection function of the overcurrent protection module 102 within a set time, thereby selectively controlling the current entering the GOA circuit.
- the current passes through the pulse width modulation module 101, and the pulse width modulation module 101 outputs a pulse signal, and the output pulse signal enters the level conversion module 105, and is disposed in the level conversion module.
- the current source 1051 in the 105 outputs a constant current level to charge the capacitor 104.
- the pulse width of the pulse signal can control the charging time of the capacitor 104, thereby controlling the voltage of the capacitor 104.
- the switching device 1031 Outputting a corresponding signal to the overcurrent protection module 102 according to the voltage of the capacitor 104, and the overcurrent protection module 102 determines whether to turn on the overcurrent protection function according to the input signal; for example, at the moment of power on, the The current of the overcurrent protection module 102 is subjected to pull-down control to normally start the GOA circuit; for example, after a certain period of power-on, pull-down control is performed on the current passing through the overcurrent protection module 102, and current enters the GOA circuit to drive the liquid crystal. Display panel.
- the switching device 1031 is a comparator, the comparator includes a forward input end, an inverting input end, and an output end; a forward input end of the comparator is connected to an output end of the capacitor 104, the comparator The inverting input is connected to the reference voltage, and the output of the comparator is connected to the overcurrent protection module 102.
- the capacitor 104 When the switch control circuit is in operation, the capacitor 104 provides a control voltage to the comparator, and the comparator outputs a high level or a low level to control by comparing the control voltage with the reference voltage.
- the overcurrent protection circuit module for example, when the control voltage is lower than the reference voltage, the comparator outputs a low level, the overcurrent protection module 102 is turned off; when the control voltage is higher than the reference The voltage, the comparator outputs a low level, and the overcurrent protection module 102 is turned on.
- the switching device 1031 can also be selected as a triode, the triode includes an input end, an output end, and a control end; the control end of the triode is connected to the output end of the capacitor 104, and the input end of the triode is connected to start. a power supply, the output end of the triode is connected to the overcurrent protection module 102; the capacitor 104 provides a control voltage for the control end of the triode, and the startup power supply provides a startup voltage for the overcurrent protection module 102. After the control voltage reaches the voltage value of the transistor, the starting voltage is outputted through the input end of the transistor and outputted to the overcurrent protection module 102 via the output end of the transistor, thereby starting the overcurrent Protection module 102.
- the capacitor 104 When the switch control circuit is in operation, the capacitor 104 provides a control voltage to the control terminal of the triode. Taking an N-type MOS transistor as an example, the capacitor 104 provides a high-level control voltage for the control terminal of the triode.
- the MOS transistor is turned on, and after the startup voltage enters the overcurrent protection module 102, the overcurrent protection module 102 is activated; for example, the capacitor 104 is the triode during a set time of a power on operation.
- the control terminal provides a low level control voltage, the MOS transistor is turned off, the startup voltage does not enter the overcurrent protection module 102, and the overcurrent protection module 102 turns off the overcurrent protection function.
- a liquid crystal display panel includes a display panel main body and a switch control circuit; the switch control circuit includes: a pulse width modulation module; and a level conversion module connected to the pulse width modulation module.
- An output terminal, a current source is disposed in the level conversion module; a capacitor, an input end of the capacitor is connected to an output end of the current source, the current source provides a constant current level for the capacitor; and an overcurrent protection module Connecting the output of the level conversion module; and the control module is configured to enable or disable an overcurrent protection function of the overcurrent protection module within a set time, the control module including a switching device, An input end of the switching device is connected to an output end of the capacitor, and an output end of the switching device is connected to a control end of the overcurrent protection module.
- the working principle of the liquid crystal display panel of the preferred embodiment is the same as that of the control circuit of the liquid crystal display panel of the preferred embodiment.
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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)
- Liquid Crystal Display Device Control (AREA)
- Dc-Dc Converters (AREA)
- Liquid Crystal (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims (13)
- 一种开关机控制电路,其包括:脉冲宽度调制模块;电平转换模块,连接所述脉冲宽度调制模块的输出端,所述电平转换模块内设置一电流源;电容,所述电容的输入端连接所述电流源的输出端,所述电流源为所述电容提供恒流电平;过流保护模块,连接所述电平转换模块的输出端;以及,控制模块,用以在设定时间内启动或关闭所述过流保护模块的过流保护功能,所述控制模块包括一开关器件,所述开关器件的输入端连接所述电容的输出端,所述开关器件的输出端连接所述过流保护模块的控制端;所述设定时间为自开机操作或关机操作所对应的时刻起的预定时间。
- 根据权利要求1所述的开关机控制电路,其中,所述开关器件为比较器,所述比较器包括正向输入端、反向输入端以及输出端;所述比较器的正向输入端连接所述电容的输出端,所述比较器的反向输入端接入基准电压,所述比较器的输出端连接所述过流保护模块。
- 根据权利要求1所述的开关机控制电路,其中,所述开关器件为三极管,所述三极管包括输入端、输出端以及控制端;所述三极管的控制端连接所述电容的输出端,所述三极管的输入端连接启动电源,所述三极管的输出端连接所述过流保护模块。
- 根据权利要求1所述的开关机控制电路,其中,所述过流保护模块的输出端连接GOA驱动电路。
- 一种开关机控制电路,其包括:脉冲宽度调制模块;电平转换模块,连接所述脉冲宽度调制模块的输出端,所述电平转换模块内设置一电流源;电容,所述电容的输入端连接所述电流源的输出端,所述电流源为所述电容提供恒流电平;过流保护模块,连接所述电平转换模块的输出端;以及,控制模块,用以在设定时间内启动或关闭所述过流保护模块的过流保护功能,所述控制模块包括一开关器件,所述开关器件的输入端连接所述电容的输出端,所述开关器件的输出端连接所述过流保护模块的控制端。
- 根据权利要求5所述的开关机控制电路,其中,所述开关器件为比较器,所述比较器包括正向输入端、反向输入端以及输出端;所述比较器的正向输入端连接所述电容的输出端,所述比较器的反向输入端接入基准电压,所述比较器的输出端连接所述过流保护模块。
- 根据权利要求5所述的开关机控制电路,其中,所述开关器件为三极管,所述三极管包括输入端、输出端以及控制端;所述三极管的控制端连接所述电容的输出端,所述三极管的输入端连接启动电源,所述三极管的输出端连接所述过流保护模块。
- 根据权利要求5所述的开关机控制电路,其中,所述过流保护模块的输出端连接GOA驱动电路。
- 一种液晶显示面板,其包括显示面板主体与开关机控制电路;所述开关机控制电路包括:脉冲宽度调制模块;电平转换模块,连接所述脉冲宽度调制模块的输出端,所述电平转换模块内设置一电流源;电容,所述电容的输入端连接所述电流源的输出端,所述电流源为所述电容提供恒流电平;过流保护模块,连接所述电平转换模块的输出端;以及,控制模块,用以在设定时间内启动或关闭所述过流保护模块的过流保护功能,所述控制模块包括一开关器件,所述开关器件的输入端连接所述电容的输出端,所述开关器件的输出端连接所述过流保护模块的控制端。
- 根据权利要求9所述的液晶显示面板,其中,所述开关器件为比较器,所述比较器包括正向输入端、反向输入端以及输出端;所述比较器的正向输入端连接所述电容的输出端,所述比较器的反向输入端接入基准电压,所述比较器的输出端连接所述过流保护模块。
- 根据权利要求9所述的液晶显示面板,其中,所述开关器件为三极管,所述三极管包括输入端、输出端以及控制端;所述三极管的控制端连接所述电容的输出端,所述三极管的输入端连接启动电源,所述三极管的输出端连接所述过流保护模块。
- 根据权利要求9所述的液晶显示面板,其中,所述设定时间为自开机操作或关机操作所对应的时刻起的预定时间。
- 根据权利要求9所述的开关机控制电路,其中,所述过流保护模块的输出端连接GOA驱动电路。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020207012481A KR20200055125A (ko) | 2017-09-30 | 2017-11-06 | 액정 디스플레이 패널 및 전환 제어 회로 |
US15/574,969 US10698238B2 (en) | 2017-09-30 | 2017-11-06 | Liquid crystal display panel and controlling circuit |
EP17926450.2A EP3691126A4 (en) | 2017-09-30 | 2017-11-06 | LIQUID CRYSTAL DISPLAY AND START / STOP CONTROL CIRCUIT |
JP2020530716A JP7150019B2 (ja) | 2017-09-30 | 2017-11-06 | 液晶ディスプレイパネル及びその電源オン/オフ切替制御回路 |
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CN201710918653.1A CN107527602B (zh) | 2017-09-30 | 2017-09-30 | 液晶显示面板及开关机控制电路 |
CN201710918653.1 | 2017-09-30 |
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EP (1) | EP3691126A4 (zh) |
JP (1) | JP7150019B2 (zh) |
KR (1) | KR20200055125A (zh) |
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WO (1) | WO2019061682A1 (zh) |
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CN108831361B (zh) * | 2018-06-25 | 2021-06-25 | 南京熊猫电子制造有限公司 | 一种led背光驱动电路 |
CN109637412B (zh) | 2018-12-25 | 2020-10-30 | 惠科股份有限公司 | 显示面板的过流保护方法及显示装置 |
CN112992038B (zh) * | 2021-03-09 | 2023-03-17 | 深圳市华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030030956A1 (en) * | 2001-08-13 | 2003-02-13 | Yamaha Corporation | Current detection and overcurrent protection for transistors in pulse-width modulation amplifier |
CN203135828U (zh) * | 2013-03-04 | 2013-08-14 | 力博特公司 | 电源开关机电路 |
CN203457042U (zh) * | 2013-09-04 | 2014-02-26 | 陕西中科天地航空模块有限公司 | 一种脉冲开关机开关电源 |
CN103869722A (zh) * | 2014-04-08 | 2014-06-18 | 广东宝莱特医用科技股份有限公司 | 一种硬开关机系统 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6143729U (ja) * | 1984-08-24 | 1986-03-22 | オムロン株式会社 | モ−タ保護回路 |
JPH02193520A (ja) * | 1989-01-20 | 1990-07-31 | Fujitsu General Ltd | 過電流検出装置による電源遮断方法 |
JPH0385014A (ja) * | 1989-08-29 | 1991-04-10 | Sharp Corp | Pwm/dc電圧変換回路 |
JPH0583842A (ja) * | 1991-09-18 | 1993-04-02 | Mitsubishi Electric Corp | 過電流保護継電装置 |
JP3305257B2 (ja) * | 1998-05-06 | 2002-07-22 | セイコーインスツルメンツ株式会社 | 充放電制御回路と充電式電源装置およびその制御方法 |
KR100927013B1 (ko) | 2002-11-22 | 2009-11-16 | 엘지디스플레이 주식회사 | 액정표시장치 및 그 구동방법 |
US8405321B2 (en) * | 2007-07-26 | 2013-03-26 | Rohm Co., Ltd. | Drive unit, smoothing circuit, DC/DC converter |
JP2009165285A (ja) | 2008-01-08 | 2009-07-23 | Panasonic Corp | 半導体装置 |
CN201868077U (zh) * | 2010-02-04 | 2011-06-15 | 福建省冠林科技有限公司 | 一种具有开屏延迟的模拟tft屏驱动电路 |
JP5470150B2 (ja) | 2010-04-23 | 2014-04-16 | ローム株式会社 | スイッチング電源の制御回路、制御方法およびそれらを用いた発光装置および電子機器 |
JP2011244677A (ja) | 2010-04-23 | 2011-12-01 | Rohm Co Ltd | スイッチング電源の制御回路およびそれを用いたスイッチング電源、発光装置および電子機器 |
JP5492728B2 (ja) | 2010-09-28 | 2014-05-14 | 株式会社ジャパンディスプレイ | 表示装置 |
JP6076630B2 (ja) * | 2012-07-11 | 2017-02-08 | ローム株式会社 | ドライバ回路 |
CN110768205B (zh) | 2016-04-28 | 2022-02-25 | 罗姆股份有限公司 | 过电流保护电路 |
CN106683621B (zh) * | 2016-12-30 | 2024-03-29 | 厦门厦华科技有限公司 | 一种led背光驱动电路及实现软启动的方法 |
CN106648020A (zh) * | 2017-01-05 | 2017-05-10 | 郑州云海信息技术有限公司 | 一种防止过流保护误动作的方法及装置 |
CN107040738B (zh) * | 2017-04-14 | 2020-03-17 | 四川长虹电器股份有限公司 | 消除信号功能模块启动上电时电压和电流超标的电路 |
CN106991988B (zh) * | 2017-05-17 | 2019-07-02 | 深圳市华星光电技术有限公司 | Goa电路的过电流保护系统及方法 |
-
2017
- 2017-09-30 CN CN201710918653.1A patent/CN107527602B/zh active Active
- 2017-11-06 EP EP17926450.2A patent/EP3691126A4/en not_active Withdrawn
- 2017-11-06 JP JP2020530716A patent/JP7150019B2/ja active Active
- 2017-11-06 WO PCT/CN2017/109526 patent/WO2019061682A1/zh active Application Filing
- 2017-11-06 KR KR1020207012481A patent/KR20200055125A/ko not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030030956A1 (en) * | 2001-08-13 | 2003-02-13 | Yamaha Corporation | Current detection and overcurrent protection for transistors in pulse-width modulation amplifier |
CN203135828U (zh) * | 2013-03-04 | 2013-08-14 | 力博特公司 | 电源开关机电路 |
CN203457042U (zh) * | 2013-09-04 | 2014-02-26 | 陕西中科天地航空模块有限公司 | 一种脉冲开关机开关电源 |
CN103869722A (zh) * | 2014-04-08 | 2014-06-18 | 广东宝莱特医用科技股份有限公司 | 一种硬开关机系统 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3691126A4 * |
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JP2020532275A (ja) | 2020-11-05 |
EP3691126A4 (en) | 2021-08-18 |
CN107527602B (zh) | 2019-07-16 |
EP3691126A1 (en) | 2020-08-05 |
JP7150019B2 (ja) | 2022-10-07 |
KR20200055125A (ko) | 2020-05-20 |
CN107527602A (zh) | 2017-12-29 |
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