CN105469766B - Goa电路 - Google Patents

Goa电路 Download PDF

Info

Publication number
CN105469766B
CN105469766B CN201610003304.2A CN201610003304A CN105469766B CN 105469766 B CN105469766 B CN 105469766B CN 201610003304 A CN201610003304 A CN 201610003304A CN 105469766 B CN105469766 B CN 105469766B
Authority
CN
China
Prior art keywords
signal
tft
film transistor
thin film
potential
Prior art date
Application number
CN201610003304.2A
Other languages
English (en)
Other versions
CN105469766A (zh
Inventor
肖军城
曹尚操
戴荣磊
颜尧
Original Assignee
武汉华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to CN201610003304.2A priority Critical patent/CN105469766B/zh
Publication of CN105469766A publication Critical patent/CN105469766A/zh
Application granted granted Critical
Publication of CN105469766B publication Critical patent/CN105469766B/zh

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/124Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136286Wiring, e.g. gate line, drain line
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3648Control of matrices with row and column drivers using an active matrix
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3648Control of matrices with row and column drivers using an active matrix
    • G09G3/3659Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • G09G3/3674Details of drivers for scan electrodes
    • G09G3/3677Details of drivers for scan electrodes suitable for active matrices only
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C19/00Digital stores in which the information is moved stepwise, e.g. shift register stack stores, push-down stores
    • G11C19/28Digital stores in which the information is moved stepwise, e.g. shift register stack stores, push-down stores using semiconductor elements
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/1222Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or crystalline structure of the active layer
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/1255Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs integrated with passive devices, e.g. auxiliary capacitors
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1345Conductors connecting electrodes to cell terminals
    • G02F1/13454Drivers integrated on the active matrix substrate
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/04Structural and physical details of display devices
    • G09G2300/0404Matrix technologies
    • G09G2300/0408Integration of the drivers onto the display substrate
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0283Arrangement of drivers for different directions of scanning
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0286Details of a shift registers arranged for use in a driving circuit

Abstract

本发明提供一种GOA电路,通过在第n级GOA单元的输出模块(400)中设置与第十薄膜晶体管(T10)串联的受第M条时钟信号(CK(M))控制的第十三薄膜晶体管(T13),能够在信号中停并进行触控扫描时防止时钟信号输出造成输出端(G(n))的输出竞争;通过在输出端下拉模块(600)中设置受全局控制信号(Gas)控制的第十二薄膜晶体管(T12),以及在信号中停并进行触控扫描时将复合信号(CS)设置为与触控扫描信号一致的脉冲信号,能够使得所有级GOA单元中的第十二薄膜晶体管(T12)打开,所有级GOA单元的输出端将与触控扫描信号(TP)一致的复合信号(CS)输出,从而所有级GOA单元的输出端的电位跳变与触控扫描信号一致,减少触控扫描信号的延迟。

Description

GOA电路

技术领域

本发明涉及显示技术领域,尤其涉及一种GOA电路。

背景技术

液晶显示器(Liquid Crystal Display,LCD)具有机身薄、省电、无辐射等众多优点,得到了广泛的应用。如:液晶电视、移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等,在平板显示领域中占主导地位。

GOA(Gate Driver on Array)技术即阵列基板行驱动技术,是利用薄膜晶体管(Thin Film Transistor,TFT)液晶显示器阵列制程将栅极扫描驱动电路制作在薄膜晶体管阵列基板上,以实现逐行扫描的驱动方式,具有降低生产成本和实现面板窄边框设计的优点,为多种显示器所使用。GOA电路具有两项基本功能:第一是输出栅极扫描驱动信号,驱动面板内的栅极线,打开显示区内的TFT,以对像素进行充电;第二是移位寄存功能,当一个栅极扫描驱动信号输出完成后,通过时钟控制进行下一个栅极扫描驱动信号的输出,并依次传递下去。GOA技术能减少外接IC的焊接(bonding)工序,有机会提升产能并降低产品成本,而且可以使液晶显示面板更适合制作窄边框的显示产品。

嵌入式触控技术是将触控面板和液晶面板结合为一体,并将触控面板功能嵌入到液晶面板内,使得液晶面板同时具备显示和感知触控输入的功能。随着显示技术的飞速发展,触控显示面板已经广泛地被人们所接受及使用,如智能手机、平板电脑等均使用了触控显示面板。

现有的嵌入式触控技术主要分为两种:一种是触控电路在液晶盒上型(On Cell),另一种是触控电路在液晶盒内型(In Cell)。

In cell型触控显示面板需具有信号中停功能,即在显示过程中GOA电路正常工作时,需在任一时刻关闭GOA电路中所有级GOA单元的输出端,停止栅极扫描驱动信号输出,以进行触控扫描,触控扫描结束后,GOA电路再恢复正常,继续输出栅极扫描驱动信号。然而,现有的单型GOA电路在实现信号中停功能时,存在时钟信号输出和用于拉低输出端电位的恒压低电位信号输出的竞争风险,另外,输出端被拉低至恒压低电位会干扰触控扫描信号,造成触控扫描信号延迟。

发明内容

本发明的目的在于提供一种GOA电路,能够避免现有技术中存在的GOA电路在实现信号中停功能时,时钟信号输出和用于拉低输出端电位的恒压低电位信号输出的竞争风险,并能够减少触控扫描信号的延迟。

为实现上述目的,本发明提供了一种GOA电路,包括:级联的多级GOA单元,每一级GOA单元均包括:正反向扫描控制模块、正反向扫描下拉控制模块、第一节点控制模块、输出模块、第二节点控制模块、输出端下拉模块、稳压模块、及电容;

设n为正整数,除第一级GOA单元、第二级GOA单元、倒数第二级GOA单元、及最后一级GOA单元外,在第n级GOA单元中:

所述正反向扫描控制模块包括:第一薄膜晶体管,所述第一薄膜晶体管的栅极电性连接于上两级第n-2级GOA单元的输出端,源极接入正向扫描控制信号,漏极电性连接于第一节点;以及第二薄膜晶体管,所述第二薄膜晶体管的栅极电性连接于下两级第n+2级GOA单元的输出端,源极接入反向扫描控制信号,漏极电性连接于第一节点;

所述正反向扫描下拉控制模块包括:第三薄膜晶体管,所述第三薄膜晶体管的栅极接入正向扫描控制信号,源极接入第M+1条时钟信号,漏极电性连接于第八薄膜晶体管的栅极;以及第四薄膜晶体管,所述第四薄膜晶体管的栅极接入反向扫描控制信号,源极接入第M-1条时钟信号,漏极电性连接于第八薄膜晶体管的栅极;

所述第一节点控制模块包括:第五薄膜晶体管,所述第五薄膜晶体管的栅极电性连接于第二节点,源极接入复合信号,漏极电性连接于第一节点;以及第十一薄膜晶体管,所述第十一薄膜晶体管的栅极电性连接于上两级第n-2级GOA单元的输出端,源极接入复合信号,漏极电性连接于第二节点;

所述输出模块包括:第十薄膜晶体管,所述第十薄膜晶体管的栅极电性连接于第七薄膜晶体管的漏极,源极接入第M条时钟信号,漏极电性连接于第十三薄膜晶体管的源极;以及第十三薄膜晶体管,所述第十三薄膜晶体管的栅极接入第M条时钟信号,漏极电性连接于输出端;

所述第二节点控制模块包括:第六薄膜晶体管,所述第六薄膜晶体管的栅极电性连接于第一节点,源极接入复合信号,漏极电性连接于第二节点;以及第八薄膜晶体管,所述第八薄膜晶体管的栅极电性连接于第三薄膜晶体管的漏极及第四薄膜晶体管的漏极,源极接入恒压电位,漏极电性电性连接于第二节点;

所述输出端下拉模块包括:第九薄膜晶体管,所述第九薄膜晶体管的栅极电性连接于第二节点,源极接入复合信号,漏极电性连接于输出端;以及第十二薄膜晶体管,所述第十二薄膜晶体管的栅极接入全局控制信号,源极接入复合信号,漏极电性连接于输出端;

所述稳压模块包括:第七薄膜晶体管,所述第七薄膜晶体管的栅极接入恒压电位,源极电性连接于第一节点,漏极电性连接于第十薄膜晶体管的栅极;

所述电容的一端电性连接于第二节点,另一端接入复合信号;

面板进行正常显示时,所述复合信号与恒压电位的电位一高一低,所述正向扫描控制信号与反向扫描控制信号的电位一高一低,所述全局控制信号控制所有级GOA单元中的第十二薄膜晶体管关闭,所述输出端将第M条时钟信号作为栅极扫描驱动信号输出;面板进入信号中停并进行触控扫描时,所述复合信号为与触控扫描信号一致的脉冲信号,所述正向扫描控制信号与反向扫描控制信号的电位同为高或同为低,所述第M条时钟信号控制第十三薄膜晶体管关闭,所述全局控制信号控制所有级GOA单元中的第十二薄膜晶体管打开,所有级GOA单元的输出端将与触控扫描信号一致的复合信号输出。

在第一级GOA单元和第二级GOA单元中,第一薄膜晶体管和第十一薄膜晶体管的栅极均接入电路的起始信号。

在最后一级GOA单元和倒数第二级GOA单元中,所述第二薄膜晶体管的栅极均接入电路的起始信号。

可选的,各个薄膜晶体管均为N型薄膜晶体管;面板进行正常显示时,所述复合信号为低电位,所述恒压电位为恒压高电位,所述全局控制信号为低电位,各条时钟信号均为周期性高电位脉冲信号;面板进入信号中停并进行触控扫描时,各条时钟信号均为低电位,所述全局控制信号为高电位。

正向扫描时,所述正向扫描控制信号为恒压高电位,反向扫描控制信号在正常显示时为低电位,在信号中停并进行触控扫描时为高电位;反向扫描时,所述反向扫描控制信号为恒压高电位,正向扫描控制信号在正常显示时为低电位,在信号中停并进行触控扫描时为高电位。

可选的,各个薄膜晶体管均为P型薄膜晶体管;面板进行正常显示时,所述复合信号为高电位,所述恒压电位为恒压低电位,所述全局控制信号为高电位,各条时钟信号均为周期性低电位脉冲信号;面板进入信号中停并进行触控扫描时,各条时钟信号均为高电位,所述全局控制信号为低电位。

正向扫描时,所述正向扫描控制信号为恒压低电位,反向扫描控制信号在正常显示时为高电位,在信号中停并进行触控扫描时为低电位;反向扫描时,所述反向扫描控制信号为恒压低电位,正向扫描控制信号在正常显示时为高电位,在信号中停并进行触控扫描时为低电位。

本发明的GOA电路包括四条时钟信号:第一、第二、第三、及第四条时钟信号;当所述第M条时钟信号为第四条时钟信号时,第M+1条时钟信号为第一条时钟信号;当所述第M条时钟信号为第一条时钟信号时,第M-1条时钟信号为第四条时钟信号。

所述第一、第二、第三、及第四条时钟信号的脉冲周期相同,前一条时钟信号的脉冲信号结束的同时后一条时钟信号的脉冲信号产生。

本发明的有益效果:本发明提供的一种GOA电路,通过在第n级GOA单元的输出模块中设置与第十薄膜晶体管串联的受第M条时钟信号控制的第十三薄膜晶体管,能够在面板进入信号中停并进行触控扫描时防止时钟信号输出造成输出端的输出竞争;通过在输出端下拉模块中设置受全局控制信号控制的第十二薄膜晶体管,以及在面板进入信号中停并进行触控扫描时将复合信号设置为与触控扫描信号一致的脉冲信号,能够使得所有级GOA单元中的第十二薄膜晶体管打开,所有级GOA单元的输出端将与触控扫描信号一致的复合信号输出,从而所有级GOA单元的输出端的电位跳变与触控扫描信号一致,减少触控扫描信号的延迟。

附图说明

为了能更进一步了解本发明的特征以及技术内容,请参阅以下有关本发明的详细说明与附图,然而附图仅提供参考与说明用,并非用来对本发明加以限制。

附图中,

图1为本发明的GOA电路的第一实施例的电路图;

图2为图1所示GOA电路正向扫描时的时序图;

图3为现有的显示面板中一个像素的驱动电路图;

图4为本发明的GOA电路的第一实施例的第一级GOA单元的电路图;

图5为本发明的GOA电路的第一实施例的第二级GOA单元的电路图;

图6为本发明的GOA电路的第一实施例的倒数第二级GOA单元的电路图;

图7为本发明的GOA电路的第一实施例的最后一级GOA单元的电路图;

图8为本发明的GOA电路的第二实施例的电路图。

具体实施方式

为更进一步阐述本发明所采取的技术手段及其效果,以下结合本发明的优选实施例及其附图进行详细描述。

请参阅图1或图8,本发明提供一种GOA电路,其具有信号中停功能,包括:级联的多级GOA单元,每一级GOA单元均包括:正反向扫描控制模块100、正反向扫描下拉控制模块200、第一节点控制模块300、输出模块400、第二节点控制模块500、输出端下拉模块600、稳压模块700、及电容C;

设n为正整数,除第一级GOA单元、第二级GOA单元、倒数第二级GOA单元、及最后一级GOA单元外,在第n级GOA单元中:

所述正反向扫描控制模块100包括:第一薄膜晶体管T1,所述第一薄膜晶体管T1的栅极电性连接于上两级第n-2级GOA单元的输出端G(n-2),源极接入正向扫描控制信号U2D,漏极电性连接于第一节点Q(n);以及第二薄膜晶体管T2,所述第二薄膜晶体管T2的栅极电性连接于下两级第n+2级GOA单元的输出端G(n+2),源极接入反向扫描控制信号D2U,漏极电性连接于第一节点Q(n);

所述正反向扫描下拉控制模块200包括:第三薄膜晶体管T3,所述第三薄膜晶体管T3的栅极接入正向扫描控制信号U2D,源极接入第M+1条时钟信号CK(M+1),漏极电性连接于第八薄膜晶体管T8的栅极;以及第四薄膜晶体管T4,所述第四薄膜晶体管T4的栅极接入反向扫描控制信号D2U,源极接入第M-1条时钟信号CK(M-1),漏极电性连接于第八薄膜晶体管T8的栅极;

所述第一节点控制模块300包括:第五薄膜晶体管T5,所述第五薄膜晶体管T5的栅极电性连接于第二节点P(n),源极接入复合信号CS,漏极电性连接于第一节点Q(n);以及第十一薄膜晶体管T11,所述第十一薄膜晶体管T11的栅极电性连接于上两级第n-2级GOA单元的输出端G(n-2),源极接入复合信号CS,漏极电性连接于第二节点P(n);

所述输出模块400包括:第十薄膜晶体管T10,所述第十薄膜晶体管T10的栅极电性连接于第七薄膜晶体管T7的漏极,源极接入第M条时钟信号CK(M),漏极电性连接于第十三薄膜晶体管T13的源极;以及第十三薄膜晶体管T13,所述第十三薄膜晶体管T13的栅极接入第M条时钟信号CK(M),漏极电性连接于输出端G(n);

所述第二节点控制模块500包括:第六薄膜晶体管T6,所述第六薄膜晶体管T6的栅极电性连接于第一节点Q(n),源极接入复合信号CS,漏极电性连接于第二节点P(n);以及第八薄膜晶体管T8,所述第八薄膜晶体管T8的栅极电性连接于第三薄膜晶体管T3的漏极及第四薄膜晶体管T4的漏极,源极接入恒压电位CV,漏极电性电性连接于第二节点P(n);

所述输出端下拉模块600包括:第九薄膜晶体管T9,所述第九薄膜晶体管T9的栅极电性连接于第二节点P(n),源极接入复合信号CS,漏极电性连接于输出端G(n);以及第十二薄膜晶体管T12,所述第十二薄膜晶体管T12的栅极接入全局控制信号Gas,源极接入复合信号CS,漏极电性连接于输出端G(n);

所述稳压模块700包括:第七薄膜晶体管T7,所述第七薄膜晶体管T7的栅极接入恒压电位CV,源极电性连接于第一节点Q(n),漏极电性连接于第十薄膜晶体管T10的栅极;

所述电容C的一端电性连接于第二节点P(n),另一端接入复合信号CS。

面板进行正常显示时,所述复合信号CS与恒压电位CV的电位一高一低,所述正向扫描控制信号U2D与反向扫描控制信号D2U的电位一高一低,所述全局控制信号Gas控制所有级GOA单元中的第十二薄膜晶体管T12关闭,所述输出端G(n)将第M条时钟信号CK(M)作为栅极扫描驱动信号输出;面板进入信号中停并进行触控扫描时,所述复合信号CS为与触控扫描信号TP一致的脉冲信号,所述正向扫描控制信号U2D与反向扫描控制信号D2U的电位同为高或同为低,所述第M条时钟信号CK(M)控制第十三薄膜晶体管T13关闭,所述全局控制信号Gas控制所有级GOA单元中的第十二薄膜晶体管T12打开,所有级GOA单元的输出端将与触控扫描信号TP一致的复合信号CS输出。

可选的,请参阅图1,结合图2,对于本发明的GOA电路的第一实施例,各个薄膜晶体管均为N型薄膜晶体管;面板进行正常显示时,所述复合信号CS为低电位,所述恒压电位CV为恒压高电位,所述全局控制信号Gas为低电位,各条时钟信号均为周期性高电位脉冲信号;面板进入信号中停并进行触控扫描时,各条时钟信号均为低电位,所述全局控制信号Gas为高电位。进一步地,正向扫描时,所述正向扫描控制信号U2D为恒压高电位,反向扫描控制信号D2U在正常显示时为低电位,在信号中停并进行触控扫描时为高电位;反向扫描时,所述反向扫描控制信号D2U为恒压高电位,正向扫描控制信号U2D在正常显示时为低电位,在信号中停并进行触控扫描时为高电位。

可选的,请参阅图8,对于本发明的GOA电路的第二实施例,各个薄膜晶体管均为P型薄膜晶体管;那么面板进行正常显示时,所述复合信号CS为高电位,所述恒压电位CV为恒压低电位,所述全局控制信号Gas为高电位,各条时钟信号均为周期性低电位脉冲信号;面板进入信号中停并进行触控扫描时,各条时钟信号均为高电位,所述全局控制信号Gas为低电位。进一步地,正向扫描时,所述正向扫描控制信号U2D为恒压低电位,反向扫描控制信号D2U在正常显示时为高电位,在信号中停并进行触控扫描时为低电位;反向扫描时,所述反向扫描控制信号D2U为恒压低电位,正向扫描控制信号U2D在正常显示时为高电位,在信号中停并进行触控扫描时为低电位。

特别的,请参阅图4与图5,在第一级GOA单元和第二级GOA单元中,第一薄膜晶体管T1和第十一薄膜晶体管T11的栅极均接入电路的起始信号STV。请参阅图6与图7,在倒数第二级GOA单元和最后一级GOA单元中,所述第二薄膜晶体管T2的栅极均接入电路的起始信号STV。

具体地,所述GOA电路包括四条时钟信号:第一、第二、第三、及第四条时钟信号CK(1)、CK(2)、CK(3)、CK(4)。当所述第M条时钟信号CK(M)为第四条时钟信号CK(4)时,第M+1条时钟信号CK(M+1)为第一条时钟信号CK(1);当所述第M条时钟信号CK(M)为第一条时钟信号CK(1)时,第M-1条时钟信号CK(M-1)为第四条时钟信号CK(4)。

在面板进行正常显示时,所述第一、第二、第三、及第四条时钟信号CK(1)、CK(2)、CK(3)、CK(4)的脉冲周期相同,前一条时钟信号的脉冲信号结束的同时后一条时钟信号的脉冲信号产生,即所述第一条时钟信号CK(1)的第一个脉冲信号首先产生,所述第一时钟信号CK(1)的第一个脉冲信号结束的同时所述第二条时钟信号CK(2)的第一个脉冲信号产生,所述第二条时钟信号CK(2)的第一个脉冲信号结束的同时所述第三条时钟信号CK(3)的第一个脉冲信号产生,所述第三条时钟信号CK(3)的第一个脉冲信号结束的同时所述第四条时钟信号CK(4)的第一个脉冲信号产生,所述第四条时钟信号CK(4)的第一个脉冲信号结束的同时所述第一条时钟信号CK(1)的第二个脉冲信号产生。但在面板进入信号中停并进行触控扫描时,所述第一、第二、第三、及第四条时钟信号CK(1)、CK(2)、CK(3)、CK(4)均为低电位。进一步的,对应到本发明的第一实施例中,即为前一条时钟信号的下降沿与后一条时钟信号的上升沿同时产生;对应到本发明的第二实施例中,即为前一条时钟信号的上升沿与后一条时钟信号的下降沿同时产生。

进一步地,本发明的GOA电路采用隔行扫描的方式进行扫描,第一级GOA单元的输出端电性连接第三级GOA单元,第二级GOA单元的输出端电性连接第四级GOA单元,第三级GOA单元的输出端电性连接第五级GOA单元,第四级GOA单元的输出端电性连接第六级GOA单元,依此类推。

请同时参阅图1与图2,下面以本发明的GOA电路的第一实施例进行正向扫描为例,说明本发明的GOA电路的具体工作过程:

1、正常显示阶段:

首先,第n-2级GOA单元的输出端G(n-2)提供高电位(在第一级、第二级GOA单元即为电路的起始信号STV提供高电位),第一薄膜晶体管T1打开,恒压高电位的正向扫描控制信号U2D经第一薄膜晶体管T1将第一节点Q(n)充电至高电位;所述第七薄膜晶体管T7受恒压电位CV的高电位控制始终打开;与此同时,第十一薄膜晶体管T11打开,第二节点P(n)被下拉至复合信号CS的低电位,受第二节点P(n)控制的第五和第九薄膜晶体管T5、T9均关闭;受正向扫描控制信号U2D控制的第三薄膜晶体管T3打开,第M+1条时钟信号CK(M+1)为低电位,第八薄膜晶体管T8关闭,第M条时钟信号CK(M)为低电位,第十三薄膜晶体管T13关闭,输出端G(n)为低电位;

随后,第n-2级GOA单元的输出端变为低电位,第M条时钟信号CK(M)变为高电位,第十三薄膜晶体管T13打开,第一节点Q(n)保持高电位,受第一节点Q(n)控制的第十薄膜晶体管T10打开,第M条时钟信号CK(M)的高电位经第十和第十三薄膜晶体管T10、T13由输出端G(n)作为栅极扫描驱动信号输出;同时,受第一节点Q(n)控制的第六薄膜晶体管T6打开,第二节点P(n)保持低电位,第五和第九薄膜晶体管T5、T9保持关闭;

接着,第M条时钟信号CK(M)变为低电位,第M+1条时钟信号CK(M+1)提供高电位,第八薄膜晶体管T8打开,恒压电位CV的高电位经第八薄膜晶体管T8将第二节点P(n)充电至高电位,第五薄膜晶体管T5打开,第一节点Q(n)被拉低至复合信号CS的低电位,第十和第十三薄膜晶体管T10、T13关闭,第九薄膜晶体管T9打开,输出端G(n)被拉低至复合信号CS的低电位;

最后,第M+1条时钟信号变为低电位,第二节点P(n)受电容C的存储作用保持高电位,输出端G(n)保持低电位;

在整个正常显示阶段,各级GOA单元中的第十二薄膜晶体管T12受低电位的全局控制信号Gas的控制始终关闭。

2、信号中停及触控扫描阶段:

各条时钟信号均为低电位,各级GOA单元中的第十三薄膜晶体管T13均关闭,阻断了时钟信号的输出路径,从而防止时钟信号输出造成输出端的输出竞争;所述全局控制信号Gas变为高电位,各级GOA单元中的第十二薄膜晶体管T12打开,各级GOA单元的输出端G(n)均接入复合信号CS,此时,所述复合信号CS由低电位变为与触控扫描信号TP一致的脉冲信号,因此所有级GOA单元的输出端将与触控扫描信号TP一致的复合信号CS输出。

进一步地,请参阅图3,图3所示为现有的显示面板中一个像素的驱动电路,包括:一驱动薄膜晶体管T,所述驱动薄膜晶体管T的栅极电性连接GOA电路的其中一级GOA单元的输出端G(n),漏极接入数据电压Vd,源极电性连接于存储电容Cst、液晶电容Clc和栅源极电容Cgs的一端;存储电容Cst,所述存储电容Cst的另一端电性连接于公共电压信号Vcom;液晶电容Clc,所述液晶电容Clc的另一端电性连接于公共电压信号Vcom;栅源极电容Cgs,所述栅源极电容Cgs的另一端电性连接于所述GOA电路的其中一级GOA单元的输出端G(n)。

在信号中停及触控扫描阶段,由公共电压信号Vcom作为触控扫描信号TP输出周期性脉冲信号。由于存储电容Cst和液晶电容Clc的连接公共电压信号Vcom的另一端发生电位跳变,导致存储电容Cst和液晶电容Clc连接驱动薄膜晶体管T的源极的一端的电位Vp也产生跳变,此时所述GOA电路的其中一级GOA单元的输出端G(n)输出复合信号CS,若所述复合信号CS仍采用现有技术的恒压低电位信号,则会导致栅源极电容Cgs的两端产生压差,造成公共电压信号Vcom即触控扫描信号TP的周期性脉冲产生延迟,而本发明的GOA电路将将复合信号CS设置为在信号中停及触控扫描阶段与触控扫描信号TP(即此时的公共电压信号Vcom)一致的周期性脉冲信号,栅源极电容Cgs的两端的电位跳变一致,可有效缩短触控扫描信号TP的延迟。

同时,对于GOA电路中保持第一节点Q(n)为高电位的GOA单元,虽然这些GOA单元中第十薄膜晶体管T10打开,但第M条时钟信号CK(M)为低电位,第十三薄膜晶体管T13关闭,相对于现有技术,可有效避免在信号中停及触控扫描阶段,第M条时钟信号CK(M)与复合信号CS竞争输出,提升触控扫描的稳定性。

3、信号中停及触控扫描阶段结束,再次进入正常显示阶段。

反向扫描的工作过程与正向扫描类似,仅需要将所述反向扫描控制信号D2U设置为恒压高电位,正向扫描控制信号U2D在正常显示时设置为低电位,在信号中停并进行触控扫描时设置为高电位,扫描的方向由第一级向最后一级扫描变为最后一级向第一级扫描即可,此处不再赘述。

图8所示的第二实施例与上述第一实施例的具体工作过程类似,仅需要将各信号、节点的电位高低进行调换即可,此处不再赘述。

综上所述,本发明的GOA电路,通过在第n级GOA单元的输出模块中设置与第十薄膜晶体管串联的受第M条时钟信号控制的第十三薄膜晶体管,能够在面板进入信号中停并进行触控扫描时防止时钟信号输出造成输出端的输出竞争;通过在输出端下拉模块中设置受全局控制信号控制的第十二薄膜晶体管,以及在面板进入信号中停并进行触控扫描时将复合信号设置为与触控扫描信号一致的脉冲信号,能够使得所有级GOA单元中的第十二薄膜晶体管打开,所有级GOA单元的输出端将与触控扫描信号一致的复合信号输出,从而所有级GOA单元的输出端的电位跳变与触控扫描信号一致,减少触控扫描信号的延迟。

以上所述,对于本领域的普通技术人员来说,可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形,而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (9)

1.一种GOA电路,其特征在于,包括:级联的多级GOA单元,每一级GOA单元均包括:正反向扫描控制模块(100)、正反向扫描下拉控制模块(200)、第一节点控制模块(300)、输出模块(400)、第二节点控制模块(500)、输出端下拉模块(600)、稳压模块(700)、及电容(C);
设n为正整数,除第一级GOA单元、第二级GOA单元、倒数第二级GOA单元、及最后一级GOA单元外,在第n级GOA单元中:
所述正反向扫描控制模块(100)包括:第一薄膜晶体管(T1),所述第一薄膜晶体管(T1)的栅极电性连接于第n-2级GOA单元的输出端(G(n-2)),源极接入正向扫描控制信号(U2D),漏极电性连接于第一节点(Q(n));以及第二薄膜晶体管(T2),所述第二薄膜晶体管(T2)的栅极电性连接于第n+2级GOA单元的输出端(G(n+2)),源极接入反向扫描控制信号(D2U),漏极电性连接于第一节点(Q(n));
所述正反向扫描下拉控制模块(200)包括:第三薄膜晶体管(T3),所述第三薄膜晶体管(T3)的栅极接入正向扫描控制信号(U2D),源极接入第M+1条时钟信号(CK(M+1)),漏极电性连接于第八薄膜晶体管(T8)的栅极;以及第四薄膜晶体管(T4),所述第四薄膜晶体管(T4)的栅极接入反向扫描控制信号(D2U),源极接入第M-1条时钟信号(CK(M-1)),漏极电性连接于第八薄膜晶体管(T8)的栅极;
所述第一节点控制模块(300)包括:第五薄膜晶体管(T5),所述第五薄膜晶体管(T5)的栅极电性连接于第二节点(P(n)),源极接入复合信号(CS),漏极电性连接于第一节点(Q(n));以及第十一薄膜晶体管(T11),所述第十一薄膜晶体管(T11)的栅极电性连接于第n-2级GOA单元的输出端(G(n-2)),源极接入复合信号(CS),漏极电性连接于第二节点(P(n));
所述输出模块(400)包括:第十薄膜晶体管(T10),所述第十薄膜晶体管(T10)的栅极电性连接于第七薄膜晶体管(T7)的漏极,源极接入第M条时钟信号(CK(M)),漏极电性连接于第十三薄膜晶体管(T13)的源极;以及第十三薄膜晶体管(T13),所述第十三薄膜晶体管(T13)的栅极接入第M条时钟信号(CK(M)),漏极电性连接于输出端(G(n));
所述第二节点控制模块(500)包括:第六薄膜晶体管(T6),所述第六薄膜晶体管(T6)的栅极电性连接于第一节点(Q(n)),源极接入复合信号(CS),漏极电性连接于第二节点(P(n));以及第八薄膜晶体管(T8),所述第八薄膜晶体管(T8)的栅极电性连接于第三薄膜晶体管(T3)的漏极及第四薄膜晶体管(T4)的漏极,源极接入恒压电位(CV),漏极电性电性连接于第二节点(P(n));
所述输出端下拉模块(600)包括:第九薄膜晶体管(T9),所述第九薄膜晶体管(T9)的栅极电性连接于第二节点(P(n)),源极接入复合信号(CS),漏极电性连接于输出端(G(n));以及第十二薄膜晶体管(T12),所述第十二薄膜晶体管(T12)的栅极接入全局控制信号(Gas),源极接入复合信号(CS),漏极电性连接于输出端(G(n));
所述稳压模块(700)包括:第七薄膜晶体管(T7),所述第七薄膜晶体管(T7)的栅极接入恒压电位(CV),源极电性连接于第一节点(Q(n)),漏极电性连接于第十薄膜晶体管(T10)的栅极;
所述电容(C)的一端电性连接于第二节点(P(n)),另一端接入复合信号(CS);
面板进行正常显示时,所述复合信号(CS)与恒压电位(CV)的电位一高一低,所述正向扫描控制信号(U2D)与反向扫描控制信号(D2U)的电位一高一低,所述全局控制信号(Gas)控制所有级GOA单元中的第十二薄膜晶体管(T12)关闭,所述输出端(G(n))将第M条时钟信号(CK(M))作为栅极扫描驱动信号输出;面板进入信号中停并进行触控扫描时,所述复合信号(CS)为与触控扫描信号(TP)一致的脉冲信号,所述正向扫描控制信号(U2D)与反向扫描控制信号(D2U)的电位同为高或同为低,所述第M条时钟信号(CK(M))控制第十三薄膜晶体管(T13)关闭,所述全局控制信号(Gas)控制所有级GOA单元中的第十二薄膜晶体管(T12)打开,所有级GOA单元的输出端将与触控扫描信号(TP)一致的复合信号(CS)输出。
2.如权利要求1所述的GOA电路,其特征在于,在第一级GOA单元和第二级GOA单元中,第一薄膜晶体管(T1)和第十一薄膜晶体管(T11)的栅极均接入电路的起始信号(STV)。
3.如权利要求1所述的GOA电路,其特征在于,在最后一级GOA单元和倒数第二级GOA单元中,所述第二薄膜晶体管(T2)的栅极均接入电路的起始信号(STV)。
4.如权利要求1所述的GOA电路,其特征在于,各个薄膜晶体管均为N型薄膜晶体管;面板进行正常显示时,所述复合信号(CS)为低电位,所述恒压电位(CV)为恒压高电位,所述全局控制信号(Gas)为低电位,各条时钟信号均为周期性高电位脉冲信号;面板进入信号中停并进行触控扫描时,各条时钟信号均为低电位,所述全局控制信号(Gas)为高电位。
5.如权利要求4所述的GOA电路,其特征在于,正向扫描时,所述正向扫描控制信号(U2D)为恒压高电位,反向扫描控制信号(D2U)在正常显示时为低电位,在信号中停并进行触控扫描时为高电位;反向扫描时,所述反向扫描控制信号(D2U)为恒压高电位,正向扫描控制信号(U2D)在正常显示时为低电位,在信号中停并进行触控扫描时为高电位。
6.如权利要求1所述的GOA电路,其特征在于,各个薄膜晶体管均为P型薄膜晶体管;面板进行正常显示时,所述复合信号(CS)为高电位,所述恒压电位(CV)为恒压低电位,所述全局控制信号(Gas)为高电位,各条时钟信号均为周期性低电位脉冲信号;面板进入信号中停并进行触控扫描时,各条时钟信号均为高电位,所述全局控制信号(Gas)为低电位。
7.如权利要求6所述的GOA电路,其特征在于,正向扫描时,所述正向扫描控制信号(U2D)为恒压低电位,反向扫描控制信号(D2U)在正常显示时为高电位,在信号中停并进行触控扫描时为低电位;反向扫描时,所述反向扫描控制信号(D2U)为恒压低电位,正向扫描控制信号(U2D)在正常显示时为高电位,在信号中停并进行触控扫描时为低电位。
8.如权利要求1所述的GOA电路,其特征在于,包括四条时钟信号:第一、第二、第三、及第四条时钟信号(CK(1)、CK(2)、CK(3)、CK(4));当所述第M条时钟信号(CK(M))为第四条时钟信号(CK(4))时,第M+1条时钟信号(CK(M+1))为第一条时钟信号(CK(1));当所述第M条时钟信号(CK(M))为第一条时钟信号(CK(1))时,第M-1条时钟信号(CK(M-1))为第四条时钟信号(CK(4))。
9.如权利要求8所述的GOA电路,其特征在于,所述第一、第二、第三、及第四条时钟信号(CK(1)、CK(2)、CK(3)、CK(4))的脉冲周期相同,前一条时钟信号的脉冲信号结束的同时后一条时钟信号的脉冲信号产生。
CN201610003304.2A 2016-01-04 2016-01-04 Goa电路 CN105469766B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610003304.2A CN105469766B (zh) 2016-01-04 2016-01-04 Goa电路

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201610003304.2A CN105469766B (zh) 2016-01-04 2016-01-04 Goa电路
US15/026,594 US9922997B2 (en) 2016-01-04 2016-02-26 GOA circuit
PCT/CN2016/074610 WO2017117851A1 (zh) 2016-01-04 2016-02-26 Goa电路

Publications (2)

Publication Number Publication Date
CN105469766A CN105469766A (zh) 2016-04-06
CN105469766B true CN105469766B (zh) 2019-04-30

Family

ID=55607397

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610003304.2A CN105469766B (zh) 2016-01-04 2016-01-04 Goa电路

Country Status (3)

Country Link
US (1) US9922997B2 (zh)
CN (1) CN105469766B (zh)
WO (1) WO2017117851A1 (zh)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106409243B (zh) * 2016-07-13 2019-02-26 武汉华星光电技术有限公司 一种goa驱动电路
CN106098003B (zh) * 2016-08-08 2019-01-22 武汉华星光电技术有限公司 Goa电路
CN106128392A (zh) 2016-08-29 2016-11-16 武汉华星光电技术有限公司 Goa驱动电路和嵌入式触控显示面板
CN106128397B (zh) * 2016-08-31 2019-03-15 深圳市华星光电技术有限公司 一种goa驱动单元及驱动电路
CN106527823A (zh) * 2017-01-03 2017-03-22 京东方科技集团股份有限公司 一种触控基板和触控显示装置
CN108346395B (zh) * 2017-01-24 2020-04-21 京东方科技集团股份有限公司 移位寄存器及其驱动方法、栅极驱动电路和显示装置
CN107369407A (zh) * 2017-09-22 2017-11-21 京东方科技集团股份有限公司 移位寄存器单元及其驱动方法、栅极驱动电路、显示面板
US10510314B2 (en) * 2017-10-11 2019-12-17 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. GOA circuit having negative gate-source voltage difference of TFT of pull down module
TWI628638B (zh) * 2017-10-27 2018-07-01 友達光電股份有限公司 Scan driver and display device using the same
US10431178B2 (en) * 2017-10-31 2019-10-01 Wuhan China Star Optoelectronics Technology Co., Ltd. GOA driving circuit
CN107767834A (zh) * 2017-11-17 2018-03-06 武汉华星光电技术有限公司 一种goa电路
CN108010495B (zh) * 2017-11-17 2019-12-13 武汉华星光电技术有限公司 一种goa电路
CN107767833A (zh) * 2017-11-17 2018-03-06 武汉华星光电技术有限公司 一种goa电路
CN107731195B (zh) * 2017-11-22 2019-10-11 武汉华星光电技术有限公司 一种nmos型goa电路及显示面板
CN107871483B (zh) * 2017-11-27 2020-03-17 武汉华星光电技术有限公司 一种goa电路嵌入式触控显示面板
CN107863078B (zh) * 2017-11-27 2020-05-12 武汉华星光电技术有限公司 一种goa电路嵌入式触控显示面板
CN108010498A (zh) * 2017-11-28 2018-05-08 武汉华星光电技术有限公司 一种goa电路及液晶面板、显示装置
CN108091308B (zh) * 2017-12-08 2019-03-22 武汉华星光电技术有限公司 一种goa电路
CN108766380B (zh) * 2018-05-30 2020-05-29 武汉华星光电技术有限公司 Goa电路
US10839764B2 (en) * 2018-07-24 2020-11-17 Wuhan China Star Optoelectronics Technology Co., Ltd. GOA circuit and display device
CN108898996B (zh) * 2018-08-28 2020-08-11 武汉华星光电技术有限公司 栅极驱动单元的下拉电路及显示装置
US10714511B2 (en) 2018-08-28 2020-07-14 Wuhan China Star Optoelectronics Technology Co., Ltd. Pull-down circuit of gate driving unit and display device
CN109360533B (zh) * 2018-11-28 2020-09-01 武汉华星光电技术有限公司 液晶面板及其栅极驱动电路
CN109493816B (zh) * 2018-11-30 2020-08-04 武汉华星光电技术有限公司 一种goa电路、显示面板及显示装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4544948B2 (ja) * 2004-03-26 2010-09-15 シャープ株式会社 画像表示制御装置
TW201039325A (en) * 2009-04-23 2010-11-01 Novatek Microelectronics Corp Shift register apparatus
TWI433459B (zh) * 2010-07-08 2014-04-01 Au Optronics Corp 雙向移位暫存器
KR101340197B1 (ko) * 2011-09-23 2013-12-10 하이디스 테크놀로지 주식회사 쉬프트 레지스터 및 이를 이용한 게이트 구동회로
CN102945651B (zh) * 2012-10-31 2015-02-25 京东方科技集团股份有限公司 一种移位寄存器、栅极驱动电路和显示装置
TWI494905B (zh) * 2013-07-01 2015-08-01 Au Optronics Corp 有機發光二極體面板
CN104575353B (zh) * 2014-12-30 2017-02-22 厦门天马微电子有限公司 一种驱动电路、阵列基板及显示装置
CN104485079B (zh) * 2014-12-31 2017-01-18 深圳市华星光电技术有限公司 用于液晶显示装置的goa电路
CN104867472B (zh) * 2015-06-15 2017-10-17 合肥京东方光电科技有限公司 一种移位寄存器单元、栅极驱动电路和显示装置
CN105096879B (zh) * 2015-08-20 2018-03-20 京东方科技集团股份有限公司 移位寄存器单元及其驱动方法、栅极驱动装置和显示装置
CN105206327A (zh) 2015-10-09 2015-12-30 博迪加科技(北京)有限公司 一种柔性导电线缆及其制作方法
CN105206237B (zh) * 2015-10-10 2018-04-27 武汉华星光电技术有限公司 应用于In Cell型触控显示面板的GOA电路
CN105206244B (zh) * 2015-10-29 2017-10-17 武汉华星光电技术有限公司 一种goa电路及液晶显示器
CN105206246B (zh) * 2015-10-31 2018-05-11 武汉华星光电技术有限公司 扫描驱动电路及具有该电路的液晶显示装置
CN105575349B (zh) * 2015-12-23 2018-03-06 武汉华星光电技术有限公司 Goa电路及液晶显示装置

Also Published As

Publication number Publication date
CN105469766A (zh) 2016-04-06
US9922997B2 (en) 2018-03-20
WO2017117851A1 (zh) 2017-07-13
US20180047751A1 (en) 2018-02-15

Similar Documents

Publication Publication Date Title
US10115366B2 (en) Liquid crystal display device for improving the characteristics of gate drive voltage
EP3125250B1 (en) Gate driving circuit and driving method therefor and display device
CN105590601B (zh) 驱动电路、阵列基板及显示装置
CN103943055B (zh) 一种栅极驱动电路及其驱动方法、显示装置
US9275591B2 (en) Liquid crystal display
US9865220B2 (en) Gate driving circuit and display device
WO2016123968A1 (zh) 移位寄存器单元、栅极驱动电路及显示装置
CN104867472B (zh) 一种移位寄存器单元、栅极驱动电路和显示装置
CN105096891B (zh) Cmos goa电路
CN103680387B (zh) 一种移位寄存器及其驱动方法、显示装置
US10803823B2 (en) Shift register unit, gate driving circuit, and driving method
CN105609071B (zh) 移位寄存器及其驱动方法、栅极驱动电路及显示装置
US10210791B2 (en) Shift register unit, driving method, gate driver on array and display device
CN101783124B (zh) 栅极驱动电路单元、栅极驱动电路及显示装置
CN105047228B (zh) 一种移位寄存器及其驱动方法、驱动电路和显示装置
CN102708778B (zh) 移位寄存器及其驱动方法、栅极驱动装置与显示装置
KR102121248B1 (ko) Goa 회로
US20170025068A1 (en) Display device
CN105632441B (zh) 栅极驱动电路
TWI407443B (zh) 移位暫存器
JP4126613B2 (ja) 液晶表示装置のゲート駆動装置及び方法
CN104766584B (zh) 具有正反向扫描功能的goa电路
US20150332784A1 (en) Shift register unit, shift register, gate drive circuit and display apparatus
CN100426063C (zh) 液晶显示器件及其驱动方法
US9922611B2 (en) GOA circuit for narrow border LCD panel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant