WO2023164972A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2023164972A1
WO2023164972A1 PCT/CN2022/080683 CN2022080683W WO2023164972A1 WO 2023164972 A1 WO2023164972 A1 WO 2023164972A1 CN 2022080683 W CN2022080683 W CN 2022080683W WO 2023164972 A1 WO2023164972 A1 WO 2023164972A1
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WIPO (PCT)
Prior art keywords
signal
terminal
switch
crosstalk
crosstalk suppression
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PCT/CN2022/080683
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English (en)
French (fr)
Inventor
刘方云
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深圳市华星光电半导体显示技术有限公司
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Publication of WO2023164972A1 publication Critical patent/WO2023164972A1/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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the present application relates to the field of display technology, in particular to a display panel and a display device.
  • LCD full name Liquid Crystal Display (liquid crystal display)
  • LCD work project it is necessary to configure the corresponding power supply for work assistance.
  • Figure 1 is a circuit diagram of the LCD power supply.
  • the Vout voltage is input to the LCD common electrode, and the capacitive coupling effect on the data line will affect the common electrode voltage. If the common electrode potential cannot return to the set voltage in a short time, crosstalk may occur.
  • the traditional solution is to adopt a differential amplification design and adjust the parameters of the resistors R1 and R2 so that the Vout voltage returns to the set voltage to improve the crosstalk problem.
  • a display panel including an array substrate and a display control circuit connected to the array substrate;
  • the display control circuit is provided with a crosstalk suppression circuit and a display power supply circuit;
  • the crosstalk suppression circuit includes:
  • the crosstalk suppression main module connected between the differential amplification signal terminal and the output voltage terminal of the display power supply circuit; wherein, the differential amplification signal terminal is the output terminal of the differential amplifier of the display power supply circuit, and the output voltage terminal is the electrical interface of the display power supply circuit ;
  • the crosstalk suppression main module includes a threshold judgment module and a crosstalk suppression module
  • the threshold judging module is used to control the crosstalk suppression of the differential amplification signal terminal and the output voltage terminal by the crosstalk suppression module according to the crosstalk critical voltage and the differential amplification signal of the display power circuit.
  • a display device including a display panel
  • the display panel includes an array substrate and a display control circuit connected to the array substrate;
  • the display control circuit is provided with a crosstalk suppression circuit and a display power supply circuit;
  • the crosstalk suppression circuit includes:
  • the crosstalk suppression main module connected between the differential amplification signal terminal and the output voltage terminal of the display power supply circuit; wherein, the differential amplification signal terminal is the output terminal of the differential amplifier of the display power supply circuit, and the output voltage terminal is the electrical interface of the display power supply circuit ;
  • the crosstalk suppression main module includes a threshold judgment module and a crosstalk suppression module
  • the threshold judging module is used to control the crosstalk suppression of the differential amplification signal terminal and the output voltage terminal by the crosstalk suppression module according to the crosstalk critical voltage and the differential amplification signal of the display power circuit.
  • the above-mentioned display panel includes an array substrate and a display control circuit, and the display control circuit is provided with a crosstalk suppression circuit and a display power supply circuit.
  • the crosstalk suppression circuit includes a crosstalk suppression main module connected between the differential amplification signal terminal and the output voltage terminal of the display power supply circuit; wherein, the differential amplification signal terminal is the output terminal of the differential amplifier of the display power supply circuit, and the output voltage terminal is the display
  • the crosstalk suppression main module includes a threshold judgment module and a crosstalk suppression module; the threshold judgment module is used to control the differential amplification signal terminal and the output voltage of the crosstalk suppression module according to the differential amplification signal of the display power circuit and the crosstalk critical voltage end crosstalk suppression. Based on this, the crosstalk of the display power supply circuit in the low gray scale state is determined according to the differential amplification signal and the crosstalk threshold voltage, the AC output ripple of the output voltage is reduced, and the crosstalk suppression is performed accurately.
  • Figure 1 shows the power circuit diagram
  • FIG. 2 is a structural diagram of a crosstalk suppression circuit module in an embodiment.
  • FIG. 3 is a schematic diagram of a crosstalk suppression circuit according to an embodiment.
  • FIG. 4 is a structural diagram of a crosstalk suppression circuit module in another embodiment.
  • An embodiment of the present invention provides a display panel.
  • the display panel includes an array substrate and a display control circuit connected to the array substrate.
  • a crosstalk suppression module and a display power supply circuit are arranged in the display control circuit.
  • FIG. 2 is a block diagram of a crosstalk suppression circuit module in an embodiment. As shown in FIG. 2 , the crosstalk suppression circuit in an embodiment includes:
  • the crosstalk suppression main module connected between the differential amplification signal terminal and the output voltage terminal of the display power supply circuit; wherein, the differential amplification signal terminal is the output terminal of the differential amplifier of the display power supply circuit, and the output voltage terminal is the electrical interface of the display power supply circuit .
  • the crosstalk suppression main module includes a threshold judgment module 100 and a crosstalk suppression module 101 .
  • the threshold judging module 100 is used to control the crosstalk suppression of the differential amplification signal terminal and the output voltage terminal by the crosstalk suppression module 101 according to the crosstalk threshold voltage Ref and the differential amplification signal of the display power circuit.
  • the threshold judging module 100 is used to compare the differential amplified signal of the display power circuit with the crosstalk critical voltage Ref, and output the first signal when the differential amplified signal is less than the crosstalk critical voltage Ref, and output the first signal when the differential amplified signal is greater than the crosstalk critical voltage Ref. Output the second signal when the voltage Ref.
  • the crosstalk threshold voltage Ref may be the output reference voltage of the display power supply circuit, or a voltage reference value preset for the threshold judging module 100 .
  • the crosstalk suppression module 101 is configured to conduct the differential amplification signal terminal and the output voltage Vout side according to the second signal.
  • the crosstalk suppression module 101 includes a crosstalk suppression device 200 connected in the path.
  • Figure 2 is based on the traditional display power supply circuit shown in Figure 1, and captures the crosstalk critical voltage Ref on the basis of the differential amplified signal output by the operational amplifier IC1.
  • the critical crosstalk voltage Ref can be acquired by voltage sampling in the load of the display power circuit; the critical crosstalk voltage Ref can also be preset according to the empirical value of crosstalk occurrence, and output to the threshold judging module 100 in the form of preset voltage.
  • the crosstalk threshold voltage Ref can be determined according to the load type of the display power circuit or the working property of the display power circuit.
  • the electrical interface of the display power supply circuit includes a PANEL terminal, a power supply interface or a reference voltage interface.
  • the electrical interface is selected from a PANEL terminal.
  • the threshold judging module 100 outputs the first signal or the second signal according to the magnitude comparison between the differential amplified signal and the crosstalk threshold voltage Ref.
  • the differential amplification signal is less than the crosstalk critical voltage Ref, which shows that the power circuit and load are normal, and there is no obvious crosstalk (meeting the suppression requirement); the differential amplification signal is greater than the crosstalk critical voltage Ref, which shows that the power circuit and load have obvious crosstalk, and corresponding suppression is required .
  • the threshold judging module 100 includes a comparison circuit, one input end of the comparison circuit is used to access the differential amplification signal, the other input end is used to access the crosstalk threshold voltage Ref, and the output end is used to output the first signal or second signal.
  • FIG. 3 is a crosstalk suppression circuit diagram of an embodiment. As shown in FIG. 3 , the threshold judgment module 100 is based on the operational amplifier IC2 to construct a comparison circuit to output the first signal or the second signal.
  • the threshold judging module 100 can also choose an integrated comparator chip to compare the corresponding differential amplification signal with the crosstalk threshold voltage Ref.
  • FIG. 4 is a block diagram of a crosstalk suppression circuit module in another implementation manner. As shown in FIG. Disconnect the differential amplifier signal terminal and the output voltage terminal.
  • the path construction module 102 turns on or off the differential amplification signal terminal and the output voltage terminal, and provides another path for the differential amplification signal terminal and the output voltage terminal.
  • a backup path is provided.
  • the path construction module 102 performs corresponding path construction and closure.
  • the threshold judging module 100 outputs the first signal, it indicates that the power supply circuit and the load are normal, and the path building module 102 builds the side of the differential amplification signal terminal and the output voltage Vout to output the normal output voltage Vout.
  • the path construction module 102 closes the path constructed by it, and the crosstalk suppression module 101 executes the path construction on the side of the differential amplification signal terminal and the output voltage Vout.
  • the crosstalk suppression module 101 is also connected to the crosstalk suppression device 200 during the process of constructing the path, so as to suppress the crosstalk.
  • the crosstalk suppression device 200 can effectively suppress the AC ripple because it is directly connected to the path, and reduces the crosstalk of the circuit as a whole.
  • the path building module 102 includes a first controlled switch.
  • One switch end of the first controlled switch is used to connect to the differential amplification signal end, the other switch end is used to connect to one side of the output voltage Vout, and the controlled end is used to connect the first signal or the second signal.
  • the path construction or closure of the path construction module 102 is realized through the properties of the switch being turned on or off.
  • the first controlled switch includes a semiconductor switch device, a relay or an electronic switch chip.
  • the semiconductor switching device includes a field effect transistor, a triode or a thyristor, etc., for example, the gate of the field effect transistor is a controlled terminal, and the switching logic is realized. Similarly, the contact control of the relay can realize the switching logic of the first controlled switch.
  • the first controlled switch includes a PNP transistor Q1;
  • the base of the PNP transistor Q1 is used to access the first signal or the second signal, the emitter of the base of the PNP transistor Q1 is used to connect to the output voltage Vout side, and the emitter of the collector of the PNP transistor Q1 is used to connect to the differential amplifier. signal terminal.
  • the first signal is a logic low-level signal to drive the PNP transistor Q1 to conduct, and build a path between the differential amplification signal terminal and the output voltage Vout side.
  • the second signal is a logic high level signal. At this time, the PNP transistor Q1 is turned off, and the path between the differential amplification signal terminal and the output voltage Vout side is also turned off.
  • the crosstalk suppression module 101 includes a second controlled switch.
  • One switch terminal of the second controlled switch is used to connect to the differential amplification signal terminal, the other switch terminal is used to connect to one side of the output voltage Vout, and the controlled terminal is used to connect the first signal or the second signal.
  • One end of the crosstalk suppression device 200 is used for grounding, and the other end is connected to a switch end or the other switch end of the second controlled switch.
  • the crosstalk suppression module 101 is constructed or turned off.
  • the second controlled switch includes a semiconductor switch device, a relay or an electronic switch chip.
  • the semiconductor switching device includes a field effect transistor, a triode or a thyristor, etc., for example, the gate of the field effect transistor is a controlled terminal, and the switching logic is realized. Similarly, the contact control of the relay can realize the switching logic of the second controlled switch.
  • the second controlled switch includes an NPN transistor Q2;
  • the base of the NPN transistor Q2 is used to access the first signal or the second signal, the emitter of the base of the NPN transistor Q2 is used to connect to the output voltage Vout side, and the emitter of the collector of the NPN transistor Q2 is used to connect to the differential amplifier signal terminal.
  • the second signal is a logic high level signal to drive the NPN transistor Q2 to conduct, so as to build a path between the differential amplification signal terminal and the output voltage Vout side.
  • the first signal is a logic low level signal.
  • the NPN transistor Q2 is turned off, and the path between the differential amplification signal terminal and the output voltage Vout side is also turned off.
  • the device selection of NPN transistor Q2 and PNP transistor Q1 is related to the logic level setting of the first signal and the second signal. Logic setting difference, adjust the device selection of NPN transistor Q2 and PNP transistor Q1, the above selection does not represent the only limitation.
  • the crosstalk suppression device 200 is used to suppress the AC ripple in the circuit, and includes an AC suppression element, such as an inductance element, connected in series between the differential amplification signal terminal and the output voltage Vout side.
  • an AC suppression element such as an inductance element
  • the crosstalk suppression device 200 includes one or more resistors (R1-Rn) connected in parallel, one end of the parallel connection is connected to the path formed by the crosstalk suppression module 101 , and the other end is used for grounding.
  • the number (n) of resistors connected in parallel in the crosstalk suppression device 200 can be determined according to the load type of the display power supply circuit or the working property of the display power supply circuit, and be adjusted accordingly based on empirical values.
  • the above-mentioned display panel includes an array substrate and a display control circuit, and the display control circuit is provided with a crosstalk suppression circuit and a display power supply circuit.
  • the crosstalk suppression circuit includes a crosstalk suppression main module connected between the differential amplification signal terminal and the output voltage terminal of the display power supply circuit; wherein, the differential amplification signal terminal is the output terminal of the differential amplifier of the display power supply circuit, and the output voltage terminal is the display
  • the crosstalk suppression main module includes a threshold judgment module and a crosstalk suppression module; the threshold judgment module is used to control the differential amplification signal terminal and the output voltage of the crosstalk suppression module according to the crosstalk critical voltage and the differential amplification signal of the display power circuit end crosstalk suppression. Based on this, the crosstalk of the display power supply circuit in the low gray scale state is determined according to the differential amplification signal and the crosstalk threshold voltage, the AC output ripple of the output voltage is reduced, and the crosstalk suppression is performed accurately.
  • the embodiment of the present invention also provides a display device.
  • a display device includes the display panel of any one of the above embodiments.
  • the display device may be a display device such as a computer monitor, a television, a smart phone, or a smart watch. Based on the above display panel, the display device realizes crosstalk suppression and effectively improves the display quality of the display device.
  • the above-mentioned display device includes a display panel, the display panel includes an array substrate and a display control circuit, and a crosstalk suppression circuit and a display power supply circuit are arranged in the display control circuit.
  • the crosstalk suppression circuit includes a crosstalk suppression main module connected between the differential amplification signal terminal and the output voltage terminal of the display power supply circuit; wherein, the differential amplification signal terminal is the output terminal of the differential amplifier of the display power supply circuit, and the output voltage terminal is the display The electrical interface of the power supply circuit; the crosstalk suppression main module includes a threshold judgment module and a crosstalk suppression module; the threshold judgment module is used to control the differential amplification signal terminal and the output voltage of the crosstalk suppression module according to the crosstalk critical voltage and the differential amplification signal of the display power circuit end crosstalk suppression. Based on this, the crosstalk of the display power supply circuit in the low gray scale state is determined according to the differential amplification signal and the crosstalk threshold voltage, the AC output ripple of the output voltage is reduced, and the crosstalk suppression is performed accurately

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Abstract

一种显示面板及显示装置，显示面板中的串扰抑制电路包括连接在显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块。串扰抑制主模块包括阈值判断模块（100）和串扰抑制模块（101）；阈值判断模块（100）用于根据串扰临界电压（Ref）和显示电源电路的差分放大信号，控制串扰抑制模块（101）对差分放大信号端与输出电压端的串扰抑制。

Description

显示面板及显示装置 技术领域
本申请涉及显示技术领域，特别是涉及一种显示面板及显示装置。
 背景技术
LCD，全称为Liquid Crystal Display（液晶显示器），是目前主流的显示器件。在LCD的工作工程中，需要配置相应的电源进行工作辅助。
图1为LCD电源电路图，如图1所示，Vout电压输入至LCD共电极，数据线上的电容耦合效应会影响共电极电压。如果共电极电位无法在短时间内回到设定电压，可能会产生串扰。为了解决串扰问题，如图1所示，传统解决方式是采用差分放大设计，调整电阻R1和电阻R2的参数，使得Vout电压回到设定的电压从而改善串扰的问题。
 技术问题
然而，以图1为例，LCD工作在低灰阶状态时外围负载较轻，电源IC工作在DCM(Discontinuous Conduction Mode非连续导通模式)工作模式，此时电流断续，寄生电容产生振荡，输出纹波加大，CFVCOM的交流波动使得Vout交流波动加大，Vout电压波动引起液晶充电电压波动从而引起串扰。针对这一串扰的解决方式是增加反馈电路，使Vout输出电压相对稳定，但是其交流纹波无法明显减小，串扰改善不明显。
由此可见，在传统的LCD电源电路中，仍难以有效抑制电路的串扰问题。
 技术解决方案
基于此，有必要针对上述技术问题，提供一种改善串扰问题的显示面板及显示装置。
一种显示面板，其中，包括阵列基板和连接阵列基板的显示控制电路；
显示控制电路内设置有串扰抑制电路和显示电源电路；
其中，串扰抑制电路包括：
连接在显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，差分放大信号端为显示电源电路的差分放大器的输出端，输出电压端为显示电源电路的电性接口；
串扰抑制主模块包括阈值判断模块和串扰抑制模块；
其中，阈值判断模块用于根据串扰临界电压和显示电源电路的差分放大信号，控制串扰抑制模块对差分放大信号端与输出电压端的串扰抑制。
一种显示装置，其中，包括显示面板；
显示面板包括阵列基板和连接阵列基板的显示控制电路；
显示控制电路内设置有串扰抑制电路和显示电源电路；
其中，串扰抑制电路包括：
连接在显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，差分放大信号端为显示电源电路的差分放大器的输出端，输出电压端为显示电源电路的电性接口；
串扰抑制主模块包括阈值判断模块和串扰抑制模块；
其中，阈值判断模块用于根据串扰临界电压和显示电源电路的差分放大信号，控制串扰抑制模块对差分放大信号端与输出电压端的串扰抑制。
 有益效果
上述的显示面板，包括阵列基板和显示控制电路，显示控制电路内设置有串扰抑制电路和显示电源电路。其中，串扰抑制电路包括连接在显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，差分放大信号端为显示电源电路的差分放大器的输出端，输出电压端为显示电源电路的电性接口；串扰抑制主模块包括阈值判断模块和串扰抑制模块；阈值判断模块用于根据显示电源电路的差分放大信号和串扰临界电压，控制串扰抑制模块对差分放大信号端与输出电压端的串扰抑制。基于此，根据差分放大信号和串扰临界电压确定显示电源电路在低灰阶状态下的串扰，降低输出电压的交流输出纹波，进行准确的串扰抑制。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，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的前提下，还可以根据这些附图获得其他的附图。
图1为显示电源电路图。
图2为一实施方式的串扰抑制电路模块结构图。
图3为一实施方式的串扰抑制电路图。
图4为另一实施方式的串扰抑制电路模块结构图。
 本发明的实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的首选实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容更加透彻全面。
需要说明的是，当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件并与之结合为一体，或者可能同时存在居中元件。本文所使用的术语“安装”、“一端”、“另一端”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
本发明实施例提供了一种显示面板。
显示面板包括阵列基板和连接阵列基板的显示控制电路，显示控制电路内设置有串扰抑制模块和显示电源电路。
图2为一实施方式的串扰抑制电路模块结构图，如图2所示，一实施方式的串扰抑制电路包括：
连接在显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，差分放大信号端为显示电源电路的差分放大器的输出端，输出电压端为显示电源电路的电性接口。
串扰抑制主模块包括阈值判断模块100和串扰抑制模块101。
其中，阈值判断模块100用于根据串扰临界电压Ref和显示电源电路的差分放大信号，控制串扰抑制模块101对差分放大信号端与输出电压端的串扰抑制。
在其中一个实施例中，阈值判断模块100，用于比较显示电源电路的差分放大信号和串扰临界电压Ref，在差分放大信号小于串扰临界电压Ref时输出第一信号，在差分放大信号大于串扰临界电压Ref时输出第二信号。
其中，串扰临界电压Ref可为显示电源电路的输出参考电压，也可以是为阈值判断模块100预设的电压参考值。
在其中一个实施例中，串扰抑制模块101用于根据第二信号导通差分放大信号端与输出电压Vout一侧。
在其中一个实施例中，如图1所示，串扰抑制模块101包括在通路中接入的串扰抑制器件200。
图2以图1传统的显示电源电路为基础，在运算放大器IC1输出的差分放大信号的基础上，进行串扰临界电压Ref的捕获。其中，串扰临界电压Ref可通过在显示电源电路的负载中进行电压采样获取；串扰临界电压Ref也可根据串扰发生的经验值进行电压预设，以预设电压的形式输出至阈值判断模块100。基于此，在其中一个实施例中，串扰临界电压Ref的大小可根据显示电源电路的负载种类或显示电源电路的工作性质确定。
基于此，在其中一个实施例中，显示电源电路的电性接口包括PANEL端、电源接口或参考电压接口。作为一个较优的实施方式，如图2所示，电性接口选用PANEL端。
基于此，阈值判断模块100根据差分放大信号和串扰临界电压Ref的大小比较，输出第一信号或第二信号。其中，差分放大信号小于串扰临界电压Ref表征显示电源电路及负载正常，未出现明显串扰（达到抑制需求）；差分放大信号大于串扰临界电压Ref表征显示电源电路及负载出现明显串扰，需进行相应抑制。
在其中一个实施例中，阈值判断模块100包括比较电路，比较电路的一输入端用于接入差分放大信号，另一输入端用于接入串扰临界电压Ref，输出端用于输出第一信号或第二信号。
图3为一实施方式的串扰抑制电路图，如图3所示，阈值判断模块100以运算放大器IC2为基础，构建比较电路，进行第一信号或第二信号的输出。
其中，阈值判断模块100还可选用集成的比较器芯片，进行相应的差分放大信号和串扰临界电压Ref的大小比较。
在其中一个实施例中，图4为另一实施方式的串扰抑制电路模块结构图，如图4所示，另一实施方式的串扰抑制电路还包括：通路构建模块102，用于导通或关断差分放大信号端与输出电压端。
其中，通路构建模块102导通或关断差分放大信号端与输出电压端，为差分放大信号端与输出电压端提供另外一路通路。在串扰抑制模块101关断差分放大信号端与输出电压端时，提供备用的通路。
在其中一个实施例中，基于第一信号和第二信号的输出，通路构建模块102进行相应的通路构建和关断。在阈值判断模块100输出第一信号时，表征显示电源电路及负载正常，通路构建模块102构建差分放大信号端与输出电压Vout一侧，进行正常的输出电压Vout输出。
在阈值判断模块100输出第二信号时，通路构建模块102关断由其构建的通路，由串扰抑制模块101执行差分放大信号端与输出电压Vout一侧的通路构建。
同时，串扰抑制模块101在构建通路的过程中，还接入串扰抑制器件200，以抑制串扰。不同于设置反馈电路的串扰抑制，串扰抑制器件200由于直接接入通路，可进行有效的交流纹波抑制，整体上降低电路的串扰。
在其中一个实施例中，通路构建模块102包括第一受控开关。
第一受控开关的一开关端用于连接差分放大信号端，另一开关端用于连接输出电压Vout一侧，受控端用于接入第一信号或第二信号。
以第一受控开关的形式，通过开关导通或关断的性质，实现通路构建模块102的通路构建或关断。
在其中一个实施例中，第一受控开关包括半导体开关器件、继电器或电子开关芯片。
其中，半导体开关器件包括场效应管、三极管或可控硅等，如场效应管的栅极为受控端为例，进行开关逻辑的实现。同理，继电器的触点控制可实现第一受控开关的开关逻辑。
在其中一个实施例中，如图3所示，第一受控开关包括PNP三极管Q1；
PNP三极管Q1的基极用于接入第一信号或第二信号，PNP三极管Q1的基极的发射极用于连接输出电压Vout一侧，PNP三极管Q1的集电极的发射极用于连接差分放大信号端。
如图3所示，第一信号为逻辑低电平信号，以驱动PNP三极管Q1导通，构建差分放大信号端与输出电压Vout一侧的通路。第二信号为逻辑高电平信号，此时PNP三极管Q1关断，差分放大信号端与输出电压Vout一侧的通路也关断。
同理，串扰抑制模块101包括第二受控开关。
第二受控开关的一开关端用于连接差分放大信号端，另一开关端用于连接输出电压Vout一侧，受控端用于接入第一信号或第二信号。
串扰抑制器件200一端用于接地，另一端连接第二受控开关的一开关端或另一开关端。
以第二受控开关的形式，通过开关导通或关断的性质，实现串扰抑制模块101的通路构建或关断。
在其中一个实施例中，第二受控开关包括半导体开关器件、继电器或电子开关芯片。
其中，半导体开关器件包括场效应管、三极管或可控硅等，如场效应管的栅极为受控端为例，进行开关逻辑的实现。同理，继电器的触点控制可实现第二受控开关的开关逻辑。
在其中一个实施例中，如图3所示，第二受控开关包括NPN三极管Q2；
NPN三极管Q2的基极用于接入第一信号或第二信号，NPN三极管Q2的基极的发射极用于连接输出电压Vout一侧，NPN三极管Q2的集电极的发射极用于连接差分放大信号端。
如图3所示，第二信号为逻辑高电平信号，以驱动NPN三极管Q2导通，构建差分放大信号端与输出电压Vout一侧的通路。第一信号为逻辑低电平信号，此时NPN三极管Q2关断，差分放大信号端与输出电压Vout一侧的通路也关断。
需要注意的是，NPN三极管Q2和PNP三极管Q1的器件选型，与第一信号和第二信号的逻辑电平设置有关，在满足串扰检测的基础上，可根据第一信号和第二信号的逻辑设置差异，调整NPN三极管Q2和PNP三极管Q1的器件选型，上述选型不代表唯一限定。
其中，串扰抑制器件200用于抑制电路中的交流纹波，包括串接在差分放大信号端与输出电压Vout一侧的通路中的交流抑制元件，如电感元件。
在其中一个实施例中，如图3所示，串扰抑制器件200包括并联的一个或多个电阻（R1-Rn），并联一端连接串扰抑制模块101构成的通路，另一端用于接地。
其中，串扰抑制器件200中并联的电阻数量（n）可根据显示电源电路的负载种类或显示电源电路的工作性质确定，由经验值进行相应调整。
上述的显示面板，包括阵列基板和显示控制电路，显示控制电路内设置有串扰抑制电路和显示电源电路。其中，串扰抑制电路包括连接在显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，差分放大信号端为显示电源电路的差分放大器的输出端，输出电压端为显示电源电路的电性接口；串扰抑制主模块包括阈值判断模块和串扰抑制模块；阈值判断模块用于根据串扰临界电压和显示电源电路的差分放大信号，控制串扰抑制模块对差分放大信号端与输出电压端的串扰抑制。基于此，根据差分放大信号和串扰临界电压确定显示电源电路在低灰阶状态下的串扰，降低输出电压的交流输出纹波，进行准确的串扰抑制。
本发明实施例还提供了一种显示装置。
一种显示装置，包括上述任一实施例的显示面板。
其中，该显示装置可以是计算机显示器、电视机、智能手机、智能手表等显示设备。显示装置基于上述的显示面板，实现了串扰抑制，有效地提升显示装置的显示品质。
上述的显示装置，包括显示面板，该显示面板包括阵列基板和显示控制电路，显示控制电路内设置有串扰抑制电路和显示电源电路。其中，串扰抑制电路包括连接在显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，差分放大信号端为显示电源电路的差分放大器的输出端，输出电压端为显示电源电路的电性接口；串扰抑制主模块包括阈值判断模块和串扰抑制模块；阈值判断模块用于根据串扰临界电压和显示电源电路的差分放大信号，控制串扰抑制模块对差分放大信号端与输出电压端的串扰抑制。基于此，根据差分放大信号和串扰临界电压确定显示电源电路在低灰阶状态下的串扰，降低输出电压的交流输出纹波，进行准确的串扰抑制。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (18)

  1. 一种显示面板，其中，包括阵列基板和连接所述阵列基板的显示控制电路；
    所述显示控制电路内设置有串扰抑制电路和显示电源电路；
    其中，所述串扰抑制电路包括：
    连接在所述显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，所述差分放大信号端为所述显示电源电路的差分放大器的输出端，所述输出电压端为所述显示电源电路的电性接口；
    所述串扰抑制主模块包括阈值判断模块和串扰抑制模块；
    其中，所述阈值判断模块用于根据串扰临界电压和所述显示电源电路的差分放大信号，控制所述串扰抑制模块对所述差分放大信号端与输出电压端的串扰抑制。
  2. 根据权利要求1所述的显示面板，其中，所述阈值判断模块用于比较所述串扰临界电压和所述差分放大信号，在所述差分放大信号小于所述串扰临界电压时输出第一信号，在所述差分放大信号大于所述串扰临界电压时输出第二信号；
    其中，所述第一信号用于停止所述串扰抑制模块的串扰抑制，所述第二信号用于开始所述串扰抑制模块的串扰抑制。
  3. 根据权利要求1所述的显示面板，其中，还包括：
    通路构建模块，用于导通或关断所述差分放大信号端与输出电压端。
  4. 根据权利要求2所述的显示面板，其中，还包括：
    通路构建模块，用于根据所述第一信号导通所述差分放大信号端与输出电压端，根据所述第二信号关断所述差分放大信号端与输出电压端。
  5. 根据权利要求2所述的显示面板，其中，所述串扰抑制模块用于根据所述第二信号导通所述差分放大信号端与输出电压端；
    所述串扰抑制模块包括在通路中接入的串扰抑制器件。
  6. 根据权利要求2所述的显示面板，其中，所述阈值判断模块包括比较电路；
    所述比较电路的一输入端用于接入所述差分放大信号，另一输入端用于接入所述串扰临界电压，输出端用于输出所述第一信号或所述第二信号。
  7. 根据权利要求4所述的显示面板，其中，所述通路构建模块包括第一受控开关；
    所述第一受控开关的一开关端用于连接所述差分放大信号端，另一开关端用于连接所述输出电压端，受控端用于接入所述第一信号或所述第二信号；
    其中，所述第一受控开关的受控端在接入所述第一信号时，所述一开关端与所述另一开关端导通，在关断接入所述第二信号时，所述一开关端与所述另一开关端关断。
  8. 根据权利要求5所述的显示面板，其中，所述串扰抑制模块包括第二受控开关；
    所述第二受控开关的一开关端用于连接所述差分放大信号端，另一开关端用于连接所述输出电压端，受控端用于接入所述第一信号或所述第二信号；
    其中，所述第二受控开关的受控端在接入所述第一信号时，所述一开关端与所述另一开关端关断，在关断接入所述第二信号时，所述一开关端与所述另一开关端导通；
    所述串扰抑制器件一端用于接地，另一端连接所述第二受控开关的一开关端或另一开关端。
  9. 根据权利要求5所述的显示面板，其中，所述串扰抑制器件包括：
    并联的一个或多个电阻，并联一端连接所述串扰抑制模块构成的通路，另一端用于接地。
  10. 一种显示装置，其中，包括显示面板；
    所述显示面板包括阵列基板和连接所述阵列基板的显示控制电路；
    所述显示控制电路内设置有串扰抑制电路和显示电源电路；
    其中，所述串扰抑制电路包括：
    连接在所述显示电源电路的差分放大信号端与输出电压端之间的串扰抑制主模块；其中，所述差分放大信号端为所述显示电源电路的差分放大器的输出端，所述输出电压端为所述显示电源电路的电性接口；
    所述串扰抑制主模块包括阈值判断模块和串扰抑制模块；
    其中，所述阈值判断模块用于根据串扰临界电压和所述显示电源电路的差分放大信号，控制所述串扰抑制模块对所述差分放大信号端与输出电压端的串扰抑制。
  11. 根据权利要求10所述的显示装置，其中，所述阈值判断模块用于比较所述串扰临界电压和所述差分放大信号，在所述差分放大信号小于所述串扰临界电压时输出第一信号，在所述差分放大信号大于所述串扰临界电压时输出第二信号；
    其中，所述第一信号用于停止所述串扰抑制模块的串扰抑制，所述第二信号用于开始所述串扰抑制模块的串扰抑制。
  12. 根据权利要求10所述的显示装置，其中，还包括：
    通路构建模块，用于导通或关断所述差分放大信号端与输出电压端。
  13. 根据权利要求11所述的显示装置，其中，还包括：
    通路构建模块，用于根据所述第一信号导通所述差分放大信号端与输出电压端，根据所述第二信号关断所述差分放大信号端与输出电压端。
  14. 根据权利要求11所述的显示装置，其中，所述串扰抑制模块用于根据所述第二信号导通所述差分放大信号端与输出电压端；
    所述串扰抑制模块包括在通路中接入的串扰抑制器件。
  15. 根据权利要求11所述的显示装置，其中，所述阈值判断模块包括比较电路；
    所述比较电路的一输入端用于接入所述差分放大信号，另一输入端用于接入所述串扰临界电压，输出端用于输出所述第一信号或所述第二信号。
  16. 根据权利要求13所述的显示装置，其中，所述通路构建模块包括第一受控开关；
    所述第一受控开关的一开关端用于连接所述差分放大信号端，另一开关端用于连接所述输出电压端，受控端用于接入所述第一信号或所述第二信号；
    其中，所述第一受控开关的受控端在接入所述第一信号时，所述一开关端与所述另一开关端导通，在关断接入所述第二信号时，所述一开关端与所述另一开关端关断。
  17. 根据权利要求14所述的显示装置，其中，所述串扰抑制模块包括第二受控开关；
    所述第二受控开关的一开关端用于连接所述差分放大信号端，另一开关端用于连接所述输出电压端，受控端用于接入所述第一信号或所述第二信号；
    其中，所述第二受控开关的受控端在接入所述第一信号时，所述一开关端与所述另一开关端关断，在关断接入所述第二信号时，所述一开关端与所述另一开关端导通；
    所述串扰抑制器件一端用于接地，另一端连接所述第二受控开关的一开关端或另一开关端。
  18. 根据权利要求14所述的显示装置，其中，所述串扰抑制器件包括：
    并联的一个或多个电阻，并联一端连接所述串扰抑制模块构成的通路，另一端用于接地。
PCT/CN2022/080683 2022-03-01 2022-03-14 显示面板及显示装置 WO2023164972A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102214440A (zh) * 2011-05-24 2011-10-12 昆山工研院新型平板显示技术中心有限公司 一种减小有源矩阵发光显示器的电源纹波的方法
JP2012145848A (ja) * 2011-01-14 2012-08-02 Sharp Corp 液晶表示装置
CN105070260A (zh) * 2015-08-25 2015-11-18 深圳市华星光电技术有限公司 一种电压调节电路
CN108847173A (zh) * 2018-06-29 2018-11-20 深圳市华星光电半导体显示技术有限公司 公共电压反馈补偿电路、方法及平面显示装置
CN109377960A (zh) * 2018-12-14 2019-02-22 深圳市华星光电半导体显示技术有限公司 公共电压调节电路及公共电压调节方法
CN208707519U (zh) * 2018-09-27 2019-04-05 广州视源电子科技股份有限公司 控制开关电路及开关电源电路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI421851B (zh) * 2011-05-17 2014-01-01 Au Optronics Corp 具共用電壓補償機制之液晶顯示裝置與共用電壓補償方法
CN102622983B (zh) * 2012-03-30 2013-11-06 深圳市华星光电技术有限公司 显示器的闸极驱动电路
KR102273498B1 (ko) * 2014-12-24 2021-07-07 엘지디스플레이 주식회사 액정표시장치와 이의 구동방법
KR20170015752A (ko) * 2015-07-31 2017-02-09 삼성디스플레이 주식회사 감마기준전압 생성부 및 이를 포함하는 표시장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012145848A (ja) * 2011-01-14 2012-08-02 Sharp Corp 液晶表示装置
CN102214440A (zh) * 2011-05-24 2011-10-12 昆山工研院新型平板显示技术中心有限公司 一种减小有源矩阵发光显示器的电源纹波的方法
CN105070260A (zh) * 2015-08-25 2015-11-18 深圳市华星光电技术有限公司 一种电压调节电路
CN108847173A (zh) * 2018-06-29 2018-11-20 深圳市华星光电半导体显示技术有限公司 公共电压反馈补偿电路、方法及平面显示装置
CN208707519U (zh) * 2018-09-27 2019-04-05 广州视源电子科技股份有限公司 控制开关电路及开关电源电路
CN109377960A (zh) * 2018-12-14 2019-02-22 深圳市华星光电半导体显示技术有限公司 公共电压调节电路及公共电压调节方法

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