CN113129804B - Gate drive circuit - Google Patents
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- CN113129804B CN113129804B CN202110457681.4A CN202110457681A CN113129804B CN 113129804 B CN113129804 B CN 113129804B CN 202110457681 A CN202110457681 A CN 202110457681A CN 113129804 B CN113129804 B CN 113129804B
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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
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
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- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
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Abstract
Description
技术领域technical field
本发明涉及一种栅极驱动电路,特别涉及一种通过远端上拉配合电路的设置,减少移位暂存器的边界宽度并提升输出节点电压上升/下降的时间,避免产生充电不足问题的栅极驱动电路。The present invention relates to a gate drive circuit, in particular to a method for reducing the border width of a shift register and increasing the rise/fall time of an output node voltage through the setting of a remote pull-up coordination circuit, thereby avoiding the problem of insufficient charging gate drive circuit.
背景技术Background technique
现有显示面板的驱动电路,会通过栅极驱动电路驱动显示区中的各个像素,进而显示画面。但由于显示面板的尺寸逐渐扩大,分辨率也逐渐扩大,加上面板更新频率增加,对于栅极驱动电路的需求也相应提升。然而,因应显示面板窄边框的设计趋势,降低面板周边设置栅极驱动电路的面积将是开发显示器时的重要目标。The driving circuit of the existing display panel will drive each pixel in the display area through the gate driving circuit, and then display the picture. However, due to the gradual increase in the size and resolution of display panels, and the increase in panel update frequency, the demand for gate drive circuits has also increased accordingly. However, in response to the design trend of narrow bezels of the display panel, reducing the area of the gate driving circuit around the panel will be an important goal when developing the display.
在各种降低电路设置面积的设计中,通过单边设置驱动电路或交错的单边驱动方式设置栅极驱动电路,能降低所需晶体管的数量,达到降低电路设置面积的目标。不过单边驱动的栅极驱动电路,在扫描线的另一端往往因为充电时间不足,造成面板两端显示不一致,影响显示器的显示品质。若是设置双边驱动的栅极驱动电路,又会明显增加设置晶体管的区域,增加边框宽度而背离窄边框的目标。In various designs for reducing the circuit setup area, the gate drive circuit can be arranged by unilaterally setting the driving circuit or interleaved unilateral driving method, which can reduce the number of required transistors and achieve the goal of reducing the circuit setup area. However, the gate drive circuit driven on one side often has insufficient charging time at the other end of the scan line, resulting in inconsistent display at both ends of the panel, which affects the display quality of the display. If a gate drive circuit driven by both sides is provided, the area for disposing the transistors will be significantly increased, and the border width will be increased, which deviates from the goal of narrow borders.
综观前所述,现有的栅极驱动电路的设计上仍然具有相当的缺陷,因此,本发明通过设计一种栅极驱动电路,针对现有技术的缺失加以改善,以解决现有技术的问题,进而增进产业上的实施利用。In view of the above, the design of the existing gate drive circuit still has considerable defects. Therefore, the present invention aims at improving the deficiencies of the prior art by designing a gate drive circuit to solve the problems of the prior art , and then enhance the implementation and utilization of the industry.
发明内容Contents of the invention
有鉴于上述现有技术的问题,本发明的目的在于提供一种栅极驱动电路,其通过远端上拉配合电路的设置,降低电路设置面积并同时解决充电不足的问题。In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a gate drive circuit, which can reduce the circuit installation area and simultaneously solve the problem of insufficient charging through the arrangement of the remote pull-up coordination circuit.
根据上述目的,本发明的实施例提出一种闸级驱动电路,包含多个移位暂存器的串接电路,多个移位暂存器分别连接于显示器的栅极线以驱动栅极线上的多个像素,多个移位暂存器分别包含移位暂存电路以及远端上拉配合电路。其中,移位暂存电路包含第一输出节点及上拉节点,第一输出节点耦接于栅极线的一端,移位暂存电路接收控制信号以上拉上拉节点的电压,且接收第一时钟信号以控制第一输出节点的电压。远端上拉配合电路,通过第二输出节点耦接于栅极线的另一端,远端上拉配合电路包含上拉晶体管及下拉晶体管,上拉晶体管的第一端耦接第一时钟信号,上拉晶体管的第二端耦接于第二输出节点,上拉晶体管的控制端耦接于前级移位暂存电路的上拉节点,下拉晶体管的第一端耦接于第二输出节点,下拉晶体管的第二端耦接于电压源,下拉晶体管的控制端耦接于第二时钟信号。According to the above purpose, an embodiment of the present invention proposes a gate-level drive circuit, which includes a series circuit of multiple shift registers, and the multiple shift registers are respectively connected to the gate lines of the display to drive the gate lines. For multiple pixels on the grid, multiple shift registers respectively include a shift register circuit and a remote pull-up coordination circuit. Wherein, the shift register circuit includes a first output node and a pull-up node, the first output node is coupled to one end of the gate line, the shift register circuit receives a control signal to pull up the voltage of the pull-up node, and receives the first clock signal to control the voltage of the first output node. The remote pull-up coordination circuit is coupled to the other end of the gate line through the second output node. The remote pull-up coordination circuit includes a pull-up transistor and a pull-down transistor. The first end of the pull-up transistor is coupled to the first clock signal, The second terminal of the pull-up transistor is coupled to the second output node, the control terminal of the pull-up transistor is coupled to the pull-up node of the previous shift register circuit, and the first terminal of the pull-down transistor is coupled to the second output node, The second terminal of the pull-down transistor is coupled to the voltage source, and the control terminal of the pull-down transistor is coupled to the second clock signal.
在本发明的实施例中,移位暂存电路可包含第一移位暂存电路及第二移位暂存电路,第一移位暂存电路与第二移位暂存电路分别设置于显示器的两不同侧。远端上拉配合电路可包含第一远端上拉配合电路及第二远端上拉配合电路,第一移位暂存电路与第一远端上拉配合电路交错设置于显示器的一侧,第二移位暂存电路与第二远端上拉配合电路交错设置于显示器的另一侧。In an embodiment of the present invention, the shift register circuit may include a first shift register circuit and a second shift register circuit, and the first shift register circuit and the second shift register circuit are respectively arranged on the display two different sides. The remote pull-up coordination circuit may include a first remote pull-up coordination circuit and a second remote pull-up coordination circuit, the first shift register circuit and the first remote pull-up coordination circuit are interleavedly arranged on one side of the display, The second shift register circuit and the second remote pull-up coordination circuit are alternately arranged on the other side of the display.
在本发明的实施例中,第一时钟信号可为移位暂存器的当级时钟信号,第二时钟信号可为后级移位暂存电路的时钟信号。In an embodiment of the present invention, the first clock signal may be a current-stage clock signal of the shift register, and the second clock signal may be a clock signal of a subsequent-stage shift register circuit.
在本发明的实施例中,第一时钟信号可为移位暂存器的当级时钟信号,第二时钟信号可为外接时钟信号。第一时钟信号的相位为第二时钟信号的相位的2倍。In an embodiment of the present invention, the first clock signal may be a current-stage clock signal of the shift register, and the second clock signal may be an external clock signal. The phase of the first clock signal is twice the phase of the second clock signal.
在本发明的实施例中,移位暂存电路包含第一晶体管、第二晶体管、第三晶体管、第四晶体管、第五晶体管、第六晶体管、第七晶体管、第八晶体管、第九晶体管、第十晶体管、第十一晶体管、第十二晶体管以及第十三晶体管。其中,第一晶体管的第一端耦接于第一节点,第一晶体管的第二端耦接于反扫信号,第一晶体管的控制端耦接于后二级驱动信号。第二晶体管的第一端耦接于正扫信号,第二晶体管的第二端耦接于第一节点,第二晶体管的控制端耦接于前二级驱动信号。第三晶体管的第一端耦接于电阻的第一端,第三晶体管的第二端耦接于低电压源,第三晶体管的控制端耦接于第一节点。第四晶体管的第一端耦接于高电压源,第四晶体管的第二端耦接于电阻的第二端,第四晶体管的控制端耦接于后二级时钟信号。第五晶体管的第一端及控制端耦接于重设信号,第五晶体管的第二端耦接于第二节点。第六晶体管的第一端耦接于上拉节点,第六晶体管的第二端耦接于低电压源,第六晶体管的控制端耦接于第二节点。第七晶体管的第一端耦接于第一时钟信号,第七晶体管的控制端耦接于第三节点。第八晶体管的第一端耦接于第四节点,第八晶体管的第二端耦接于低电压源,第八晶体管的控制端耦接于第二节点。第九晶体管的第一端耦接于第五节点,第九晶体管的第二端耦接于上拉节点,第九晶体管的控制端耦接于高电压源。第十晶体管的第一端耦接于第七晶体管的第二端,第十晶体管的第二端耦接于第一输出节点,第十晶体管的控制端耦接于第七晶体管的控制端。第十一晶体管的第一端及控制端耦接于第四节点,第十一晶体管的第二端耦接于第六晶体管的第一端。第十二晶体管的第一端耦接于第一时钟信号,第十二晶体管的第二端耦接于当级控制信号,第十二晶体管的控制端耦接于第五节点。第十三晶体管的第一端耦接于当级控制信号,第十三晶体管的第二端耦接于低电压源,第十三晶体管的控制端耦接于第二节点。In an embodiment of the present invention, the shift register circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, an eighth transistor, a ninth transistor, The tenth transistor, the eleventh transistor, the twelfth transistor and the thirteenth transistor. Wherein, the first terminal of the first transistor is coupled to the first node, the second terminal of the first transistor is coupled to the anti-trace signal, and the control terminal of the first transistor is coupled to the second-stage driving signal. The first terminal of the second transistor is coupled to the positive scan signal, the second terminal of the second transistor is coupled to the first node, and the control terminal of the second transistor is coupled to the previous secondary driving signal. The first terminal of the third transistor is coupled to the first terminal of the resistor, the second terminal of the third transistor is coupled to the low voltage source, and the control terminal of the third transistor is coupled to the first node. The first terminal of the fourth transistor is coupled to the high voltage source, the second terminal of the fourth transistor is coupled to the second terminal of the resistor, and the control terminal of the fourth transistor is coupled to the second-stage clock signal. The first terminal and the control terminal of the fifth transistor are coupled to the reset signal, and the second terminal of the fifth transistor is coupled to the second node. The first terminal of the sixth transistor is coupled to the pull-up node, the second terminal of the sixth transistor is coupled to the low voltage source, and the control terminal of the sixth transistor is coupled to the second node. The first terminal of the seventh transistor is coupled to the first clock signal, and the control terminal of the seventh transistor is coupled to the third node. The first terminal of the eighth transistor is coupled to the fourth node, the second terminal of the eighth transistor is coupled to the low voltage source, and the control terminal of the eighth transistor is coupled to the second node. The first terminal of the ninth transistor is coupled to the fifth node, the second terminal of the ninth transistor is coupled to the pull-up node, and the control terminal of the ninth transistor is coupled to the high voltage source. The first terminal of the tenth transistor is coupled to the second terminal of the seventh transistor, the second terminal of the tenth transistor is coupled to the first output node, and the control terminal of the tenth transistor is coupled to the control terminal of the seventh transistor. The first terminal and the control terminal of the eleventh transistor are coupled to the fourth node, and the second terminal of the eleventh transistor is coupled to the first terminal of the sixth transistor. The first end of the twelfth transistor is coupled to the first clock signal, the second end of the twelfth transistor is coupled to the current control signal, and the control end of the twelfth transistor is coupled to the fifth node. The first end of the thirteenth transistor is coupled to the current control signal, the second end of the thirteenth transistor is coupled to the low voltage source, and the control end of the thirteenth transistor is coupled to the second node.
承上所述,依本发明实施例所公开的栅极驱动电路,可在显示器设置双边驱动的栅极驱动电路,通过远端上拉配合电路的设置,达到双边驱动以降低电压上升及下降时间的效果,避免如单边驱动的栅极驱动电路产生充电不足的问题。另一方面,通过移位暂存电路与远端上拉配合电路的设置,能降低所需晶体管的设置空间,有效降低显示器边界宽度,达到缩小边框的目标。Based on the above, according to the gate drive circuit disclosed in the embodiment of the present invention, a gate drive circuit with double-side drive can be set on the display, and the double-side drive can be achieved through the setting of the remote pull-up matching circuit to reduce the voltage rise and fall time The effect is to avoid the problem of insufficient charge caused by the gate drive circuit of unilateral drive. On the other hand, through the arrangement of the shift register circuit and the remote pull-up coordination circuit, the arrangement space of the required transistors can be reduced, the border width of the display can be effectively reduced, and the goal of reducing the frame can be achieved.
附图说明Description of drawings
为使本发明的技术特征、内容与优点及其所能实现的技术效果更为显而易见,兹将本发明配合附图,并以实施例的表达形式详细说明如下:In order to make the technical features, content and advantages of the present invention and the technical effects that can be achieved more obvious, the present invention is hereby combined with the accompanying drawings, and described in detail in the form of embodiments as follows:
图1为本发明实施例的栅极驱动电路的示意图。FIG. 1 is a schematic diagram of a gate driving circuit according to an embodiment of the present invention.
图2为本发明实施例的移位暂存器的示意图。FIG. 2 is a schematic diagram of a shift register according to an embodiment of the present invention.
图3为本发明实施例的移位暂存电路的示意图。FIG. 3 is a schematic diagram of a shift register circuit according to an embodiment of the present invention.
图4为本发明另一实施例的移位暂存器的示意图。FIG. 4 is a schematic diagram of a shift register according to another embodiment of the present invention.
附图标记说明:Explanation of reference signs:
10,20:移位暂存器10,20: shift register
11,21:移位暂存电路11,21: shift register circuit
12,22:远端上拉配合电路12,22: Remote pull-up coordination circuit
100:显示器100: display
D2U:反扫信号D2U: anti-sweep signal
G1,G2,G3,G4,Gn:第一输出节点G1, G2, G3, G4, Gn: the first output node
HC1:第一时钟信号HC1: first clock signal
HC2:第二时钟信号HC2: Second clock signal
HC3:第三时钟信号HC3: Third clock signal
HC4:第四时钟信号HC4: Fourth clock signal
HCn:本级时钟信号HCn: the clock signal of this level
HCn+1:后级时钟信号HCn+1: post-stage clock signal
HCn+2:后二级时钟信号Hn+2: post-secondary clock signal
N1:第一节点N1: the first node
N2:第二节点N2: second node
N3:第三节点N3: the third node
N4:第四节点N4: the fourth node
N5:第五节点N5: fifth node
P1,P2,P3,P4:上拉节点信号P1, P2, P3, P4: Pull up node signals
P,Pn-1:上拉节点P, Pn-1: pull-up node
R:电阻R: Resistance
R1,R2,R3,R4,Rn:第二输出节点R1, R2, R3, R4, Rn: Second output nodes
RPF:外接时钟信号RPF: external clock signal
RPM1:第一远端上拉配合电路RPM1: First remote pull-up coordination circuit
RPM2:第二远端上拉配合电路RPM2: Second remote pull-up coordination circuit
RPM3:第三远端上拉配合电路RPM3: Third remote pull-up coordination circuit
RPM4:第四远端上拉配合电路RPM4: Fourth remote pull-up coordination circuit
RST:重设信号RST: reset signal
S1:第一扫描线S1: first scan line
S2:第二扫描线S2: second scan line
S3:第三扫描线S3: The third scan line
S4:第四扫描线S4: the fourth scan line
SR1:第一移位暂存电路SR1: the first shift register circuit
SR2:第二移位暂存电路SR2: The second shift register circuit
SR3:第三移位暂存电路SR3: The third shift register circuit
SR4:第四移位暂存电路SR4: The fourth shift register circuit
SRn:第n级移位暂存电路SRn: nth stage shift register circuit
SROUT:最大负载节点SROUT: Maximum load node
STn:本级控制信号STn: current level control signal
STn+2:后二级驱动信号STn+2: rear secondary drive signal
STn-2:前二级驱动信号STn-2: the first two drive signals
T1~T13:第一晶体管~第十三晶体管T1~T13: first transistor~thirteenth transistor
T21,T23:上拉晶体管T21, T23: pull-up transistors
T22,T24:下拉晶体管T22, T24: Pull-down transistors
U2D:正扫信号U2D: Forward scan signal
VGH:高电压源VGH: High Voltage Source
XDONB:低电压源XDONB: Low Voltage Source
具体实施方式Detailed ways
为利了解本发明的技术特征、内容与优点及其所能实现的技术效果,兹将本发明配合附图,并以实施例的表达形式详细说明如下,而其中所使用的附图,其主旨仅为示意及辅助说明书之用,未必为本发明实施后的真实比例与精准配置,故不应就所附的附图的比例与配置关系解读、局限本发明于实际实施上的权利要求,合先叙明。In order to facilitate the understanding of the technical features, content and advantages of the present invention and the technical effects that can be achieved, the present invention is hereby combined with the accompanying drawings, and is described in detail as follows in the form of embodiments, and the accompanying drawings used herein, its gist It is only for the purpose of illustration and auxiliary description, not necessarily the true proportion and precise configuration of the present invention after implementation, so the attached drawings should not be interpreted based on the proportion and configuration relationship of the attached drawings, and the claims that limit the actual implementation of the present invention are complied with. Explain first.
在附图中,为了淸楚起见,放大了层、膜、面板、区域、导光件等的厚度或宽度。在整个说明书中,相同的附图标记表示相同的元件。应当理解,当诸如层、膜、区域或基板的元件被称为在另一元件“上”或“连接到”另一元件时,其可以直接在另一元件上或与另一元件连接,或者中间元件可以也存在。相反地,当元件被称为“直接在另一元件上”或“直接连接到”另一元件时,不存在中间元件。如本文所使用的“连接”,其可以指物理及/或电性的连接。再者,“电性连接”或“耦合”是可为二元件间存在其它元件。此外,应当理解,尽管术语“第一”、“第二”、“第三”在本文中可以用于描述各种元件、部件、区域、层及/或部分,其用于将一个元件、部件、区域、层及/或部分与另一个元件、部件、区域、层及/或部分区分开。因此,仅用于描述目的,而不能将其理解为指示或暗示相对重要性或者其顺序关系。In the drawings, the thickness or width of layers, films, panels, regions, light guides, etc., are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same elements. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connection" may refer to physical and/or electrical connection. Furthermore, "electrically connected" or "coupled" may mean that other elements exist between two elements. In addition, it should be understood that although the terms "first", "second", and "third" may be used herein to describe various elements, components, regions, layers and/or sections, it is used to refer to an element, component , region, layer and/or section from another element, component, region, layer and/or section. Therefore, they are for descriptive purposes only and should not be construed as indicating or implying relative importance or ordering relationship thereof.
除非另有定义,本文所使用的所有术语(包括技术和科学术语)具有与本发明所属技术领域的通常知识者通常理解的含义。将进一步理解的是,诸如在通常使用的字典中定义的那些术语应当被解释为具有与它们在相关技术和本发明的上下文中的含义一致的含义,并且将不被解释为理想化的或过度正式的意义,除非本文中明确地如此定义。Unless otherwise defined, all terms (including technical and scientific terms) used herein have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art and the present invention, and will not be interpreted as idealized or excessive formal meaning, unless expressly so defined herein.
请参阅图1,其为本发明实施例的栅极驱动电路的示意图。如图所示,在显示器100当中,多个栅极线分别连接显示区中的多个像素,并且通过周边串接的栅极驱动电路来驱动各个像素,控制各个像素显示各自的灰阶亮度而使显示器100呈现欲显示的画面。Please refer to FIG. 1 , which is a schematic diagram of a gate driving circuit according to an embodiment of the present invention. As shown in the figure, in the
在本实施例中,显示区中可设置多个像素阵列,而阵列中的每一列可通过扫描线来传送栅极驱动信号,例如图中所示的第一扫描线S1、第二扫描线S2、第三扫描线S3、第四扫描线S4等,扫描线的数量依据显示器的分辨率有所不同。为驱动各条扫描线上的各个像素,于扫描线的两端设置驱动电路,由驱动电路提供各个像素的栅极驱动信号。栅极驱动电路包含多个移位暂存器,这些移位暂存器分别包含移位暂存电路以及远端上拉配合电路。如图所示,第一扫描线S1的两端包含第一移位暂存电路SR1及第一远端上拉配合电路RPM1,第二扫描线S2的两端包含第二移位暂存电路SR2及第二远端上拉配合电路RPM2,第三扫描线S3的两端包含第三移位暂存电路SR3及第三远端上拉配合电路RPM3,第四扫描线S4的两端包含第四移位暂存电路SR4及第四远端上拉配合电路RPM4,以下依此类推。在本实施例中第一移位暂存电路SR1与第三移位暂存电路SR3设置于线路左侧,第二移位暂存电路SR2与第四移位暂存电路SR4设置于线路右侧,即本级移位暂存电路与下一级移位暂存电路设置于显示器100的两不同侧。相应地,第一远端上拉配合电路RPM1与第三远端上拉配合电路RPM3设置于线路右侧,第二远端上拉配合电路RPM2与第四远端上拉配合电路RPM4设置于线路左侧,本级远端上拉配合电路与下一级远端上拉配合电路同样设置于显示器100的两不同侧,且远端上拉配合电路与移位暂存电路交错设置。In this embodiment, multiple pixel arrays can be set in the display area, and each column in the array can transmit gate driving signals through scanning lines, such as the first scanning line S1 and the second scanning line S2 shown in the figure , the third scanning line S3 , the fourth scanning line S4 , etc., the number of scanning lines varies according to the resolution of the display. In order to drive each pixel on each scanning line, a driving circuit is provided at both ends of the scanning line, and the driving circuit provides a gate driving signal of each pixel. The gate driving circuit includes a plurality of shift registers, and the shift registers respectively include a shift register circuit and a remote pull-up coordination circuit. As shown in the figure, both ends of the first scan line S1 include a first shift register circuit SR1 and a first remote pull-up coordination circuit RPM1, and both ends of the second scan line S2 include a second shift register circuit SR2 and the second remote pull-up coordination circuit RPM2, the two ends of the third scan line S3 include the third shift temporary storage circuit SR3 and the third remote pull-up coordination circuit RPM3, the two ends of the fourth scan line S4 include the fourth The shift register circuit SR4 and the fourth remote pull-up coordination circuit RPM4, and so on. In this embodiment, the first shift register circuit SR1 and the third shift register circuit SR3 are arranged on the left side of the line, and the second shift register circuit SR2 and the fourth shift register circuit SR4 are arranged on the right side of the line , that is, the current-stage shift register circuit and the next-stage shift register circuit are disposed on two different sides of the
第一扫描线S1的一端耦接于第一移位暂存电路SR1的第一输出节点G1,而第一扫描线S1的另一端则耦接第一远端上拉配合电路RPM1的第二输出节点R1,第一移位暂存电路SR1及第一远端上拉配合电路RPM1均接收第一时钟信号HC1,第一移位暂存电路SR1接收第一控制信号,控制第一输出节点G1的电压,第一远端上拉配合电路RPM1则接收前级移位暂存器上拉节点的控制信号及后级移位暂存器的时钟信号,控制第二输出节点R1的电压。继续的第二扫描线S2一端耦接于第二移位暂存电路SR2的第一输出节点G2,另一端耦接于第二远端上拉配合电路RPM2的第二输出节点R2。与第一扫描线S1不同,第二扫描线S2的移位暂存器与远端上拉配合电路设置位置相反于第一扫描线S1的设置位置。第二移位暂存电路SR2及第二远端上拉配合电路RPM2接收第二时钟信号HC2,第二移位暂存电路SR2接收第二控制信号,控制第一输出节点G2的电压,第二远端上拉配合电路RPM2则接收前级移位暂存器上拉节点的控制信号(第一上拉节点信号P1)及后级移位暂存器的时钟信号(第三时钟信号HC3)。第三扫描线S3及第四扫描线S4则类似于第一扫描线S1及第二扫描线S2的设置,第三移位暂存电路SR3及第三远端上拉配合电路RPM3接收第三时钟信号HC3,第四移位暂存电路SR4及第四远端上拉配合电路RPM4接收第四时钟信号HC4,并配合第三上拉节点信号P3、第四上拉节点信号P4等来控制第一输出节点G3、G4与第二输出节点R3、R4的电压。后续扫描线路则依此类推,分别于线路两端设置移位暂存电路及远端上拉配合电路,且移位暂存电路与远端上拉配合电路于显示器100的侧边交错设置。One end of the first scan line S1 is coupled to the first output node G1 of the first shift register circuit SR1, and the other end of the first scan line S1 is coupled to the second output of the first remote pull-up matching circuit RPM1. The node R1, the first shift register circuit SR1 and the first remote pull-up coordination circuit RPM1 all receive the first clock signal HC1, the first shift register circuit SR1 receives the first control signal, and controls the first output node G1 Voltage, the first remote pull-up coordination circuit RPM1 receives the control signal of the pull-up node of the previous stage shift register and the clock signal of the subsequent stage shift register to control the voltage of the second output node R1. One end of the continued second scan line S2 is coupled to the first output node G2 of the second shift register circuit SR2 , and the other end is coupled to the second output node R2 of the second remote pull-up coordination circuit RPM2 . Different from the first scan line S1, the position of the shift register and the remote pull-up coordination circuit of the second scan line S2 is opposite to that of the first scan line S1. The second shift register circuit SR2 and the second remote pull-up coordination circuit RPM2 receive the second clock signal HC2, the second shift register circuit SR2 receives the second control signal, controls the voltage of the first output node G2, and the second The remote pull-up coordination circuit RPM2 receives the control signal (the first pull-up node signal P1 ) of the preceding shift register and the clock signal (the third clock signal HC3 ) of the subsequent shift register. The third scan line S3 and the fourth scan line S4 are similar to the settings of the first scan line S1 and the second scan line S2, the third shift register circuit SR3 and the third remote pull-up coordination circuit RPM3 receive the third clock The signal HC3, the fourth shift temporary storage circuit SR4 and the fourth remote pull-up cooperation circuit RPM4 receive the fourth clock signal HC4, and cooperate with the third pull-up node signal P3, the fourth pull-up node signal P4, etc. to control the first The voltages of the output nodes G3, G4 and the second output nodes R3, R4. Subsequent scanning circuits are analogously deduced, and the shift register circuit and the remote pull-up coordination circuit are arranged at both ends of the line respectively, and the shift register circuit and the remote pull-up coordination circuit are arranged alternately on the side of the
以第一扫描线S1为例,通过在第一扫描线S1的两端来提供驱动信号,能使得扫描线上的最大负载节点SROUT位置位于第一扫描线S1的中心,相较于单侧设置移位暂存电路,最大负载节点SROUT会形成于扫描线的另一端而需要更大的电压负载,其电压上升及下降的时间过大,容易产生充电不足的问题,本实施例通过双边驱动的设置能将电压上升及下降所需时间降低,避免充电不足的问题产生。不过,设置双边驱动的电路,必须在显示器100的两侧边界增加电路设置空间,不利于显示器100缩小边框的发展趋势,因此,在双边驱动电路的设置上,本实施例通过在扫描线的一端设置远端上拉配合电路,降低原本设置移位暂存电路所需的空间,使得显示器100的边界能减少20%的设置空间,确实达到降低边界电路设置空间的目标。栅极驱动电路当中的移位暂存器,即移位暂存电路与远端上拉配合电路,将于以下实施例中更详细的说明。Taking the first scan line S1 as an example, by providing driving signals at both ends of the first scan line S1, the position of the maximum load node SROUT on the scan line can be located at the center of the first scan line S1, compared with a single-side arrangement In the shift temporary storage circuit, the maximum load node SROUT will be formed at the other end of the scan line and requires a larger voltage load. The time for the voltage to rise and fall is too long, and the problem of insufficient charging is likely to occur. This embodiment adopts the double-sided drive The setting can reduce the time required for voltage rise and fall to avoid the problem of insufficient charging. However, to set up the double-sided driving circuit, it is necessary to increase the circuit setting space on both sides of the
请参阅图2,其为本发明实施例的移位暂存器的示意图。如图所示,栅极驱动电路包含n级的移位暂存器10,其分别包含移位暂存电路11及远端上拉配合电路12,移位暂存器10的级数可依据显示器的分辨率来决定。在移位暂存电路11当中,第n级移位暂存电路SRn通过第一输出节点Gn连接于扫描线的一端,第n级移位暂存电路SRn耦接于高电压源VGH及低电压源XDONB,且接收正扫信号U2D、反扫信号D2U、本级时钟信号HCn、本级控制信号STn以及重设信号RST,控制第一输出节点Gn的电压来驱动扫描线上的像素。Please refer to FIG. 2 , which is a schematic diagram of a shift register according to an embodiment of the present invention. As shown in the figure, the gate drive circuit includes n-stage shift registers 10, which respectively include a
远端上拉配合电路12通过第二输出节点Rn连接于扫描线的另一端,远端上拉配合电路12包含上拉晶体管T21及下拉晶体管T22,上拉晶体管T21的第一端耦接本级时钟信号HCn,上拉晶体管T21的第二端耦接于第二输出节点Rn,上拉晶体管T21的控制端耦接于前级移位暂存电路的上拉节点Pn-1。下拉晶体管T22的第一端耦接于第二输出节点Rn,下拉晶体管T22的第二端耦接于低电压源XDONB,下拉晶体管T22的控制端耦接于后一级移位暂存器的后级时钟信号HCn+1。由于远端上拉配合电路12不需要如移位暂存电路11设置同样数量的晶体管,在电路布置空间上可有效的节省空间,相较于两侧设有相同移位暂存电路的设置,可减少20%的设置面积。The remote pull-up
通过本级时钟信号HCn及前级移位暂存电路的上拉节点Pn-1的信号控制,上拉晶体管T21可以提升栅极驱动电路10电压上升的时间,通过低电压源XDONB及后级时钟信号HCn+1的控制,下拉晶体管T22可以提升栅极驱动电路10电压下降的时间。在前述设置面积缩减的情况下,同时达到提升电压上升及下降的时间,避免产生充电不足的问题。Through the clock signal HCn of this stage and the signal control of the pull-up node Pn-1 of the previous-stage shift register circuit, the pull-up transistor T21 can increase the voltage rise time of the
请参阅图3,其为本发明实施例的移位暂存电路的示意图。如图所示,第n级移位暂存电路SRn为13个晶体管形成的驱动电路,其包含第一晶体管T1、第二晶体管T2、第三晶体管T3、第四晶体管T4、第五晶体管T5、第六晶体管T6、第七晶体管T7、第八晶体管T8、第九晶体管T9、第十晶体管T10、第十一晶体管T11、第十二晶体管T12以及第十三晶体管T13。第一晶体管T1的第一端耦接于第一节点N1,第一晶体管T2的第二端耦接于反扫信号D2U,第一晶体管T1的控制端耦接于后二级驱动信号STn+2。第二晶体管T2的第一端耦接于正扫信号U2D,第二晶体管T2的第二端耦接于第一节点N1,第二晶体管T1的控制端耦接于前二级驱动信号STn-2。第一晶体管T1或第二晶体管T2的开关决定移位暂存电路正向扫描或反向扫描的扫描方向。Please refer to FIG. 3 , which is a schematic diagram of a shift register circuit according to an embodiment of the present invention. As shown in the figure, the nth stage shift register circuit SRn is a driving circuit formed by 13 transistors, which includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, The sixth transistor T6, the seventh transistor T7, the eighth transistor T8, the ninth transistor T9, the tenth transistor T10, the eleventh transistor T11, the twelfth transistor T12 and the thirteenth transistor T13. The first terminal of the first transistor T1 is coupled to the first node N1, the second terminal of the first transistor T2 is coupled to the anti-trace signal D2U, and the control terminal of the first transistor T1 is coupled to the second-stage driving
第三晶体管T3的第一端耦接于电阻R的第一端,第三晶体管T3的第二端耦接于低电压源XDONB,第三晶体管T3的控制端耦接于第一节点N1。第四晶体管T4的第一端耦接于高电压源VGH,第四晶体管T4的第二端耦接于电阻R的第二端,第四晶体管T4的控制端耦接于后二级时钟信号HCn+2。第五晶体管T5的第一端及控制端耦接于重设信号RST,第五晶体管T5的第二端耦接于第二节点N2。第六晶体管T6的第一端耦接于上拉节点P,第六晶体管T6的第二端耦接于低电压源XDONB,第六晶体管T6的控制端耦接于第二节点N2。A first terminal of the third transistor T3 is coupled to the first terminal of the resistor R, a second terminal of the third transistor T3 is coupled to the low voltage source XDONB, and a control terminal of the third transistor T3 is coupled to the first node N1. The first terminal of the fourth transistor T4 is coupled to the high voltage source VGH, the second terminal of the fourth transistor T4 is coupled to the second terminal of the resistor R, and the control terminal of the fourth transistor T4 is coupled to the secondary clock
第七晶体管T7的第一端耦接于本级时钟信号HCn,第七晶体管T7的控制端耦接于第三节点N3。第八晶体管T8的第一端耦接于第四节点N4,第八晶体管T8的第二端耦接于低电压源XDONB,第八晶体管T8的控制端耦接于第二节点N2。第九晶体管T9的第一端耦接于第五节点N5,第九晶体管T9的第二端耦接于上拉节点P,第九晶体管T9的控制端耦接于高电压源VGH。第十晶体管T10的第一端耦接于第七晶体管T7的第二端,第十晶体管T10的第二端耦接于第一输出节点Gn,第十晶体管T10的控制端耦接于第七晶体管T7的控制端。第十一晶体管T11的第一端及控制端耦接于第四节点N4,第十一晶体管T11的第二端耦接于第六晶体管T6的第一端。第十二晶体管T12的第一端耦接于本级时钟信号HCn,第十二晶体管T12的第二端耦接于本级控制信号STn,第十二晶体管T12的控制端耦接于第五节点N5。第十三晶体管T13的第一端耦接于本级控制信号STn,第十三晶体管T13的第二端耦接于低电压源XDONB,第十三晶体管T13的控制端耦接于第二节点N2。A first terminal of the seventh transistor T7 is coupled to the local clock signal HCn, and a control terminal of the seventh transistor T7 is coupled to the third node N3. A first terminal of the eighth transistor T8 is coupled to the fourth node N4, a second terminal of the eighth transistor T8 is coupled to the low voltage source XDONB, and a control terminal of the eighth transistor T8 is coupled to the second node N2. A first terminal of the ninth transistor T9 is coupled to the fifth node N5, a second terminal of the ninth transistor T9 is coupled to the pull-up node P, and a control terminal of the ninth transistor T9 is coupled to the high voltage source VGH. The first terminal of the tenth transistor T10 is coupled to the second terminal of the seventh transistor T7, the second terminal of the tenth transistor T10 is coupled to the first output node Gn, and the control terminal of the tenth transistor T10 is coupled to the seventh transistor The control terminal of T7. The first terminal and the control terminal of the eleventh transistor T11 are coupled to the fourth node N4, and the second terminal of the eleventh transistor T11 is coupled to the first terminal of the sixth transistor T6. The first terminal of the twelfth transistor T12 is coupled to the clock signal HCn of the current stage, the second terminal of the twelfth transistor T12 is coupled to the control signal STn of the current stage, and the control terminal of the twelfth transistor T12 is coupled to the fifth node N5. The first end of the thirteenth transistor T13 is coupled to the control signal STn of the current stage, the second end of the thirteenth transistor T13 is coupled to the low voltage source XDONB, and the control end of the thirteenth transistor T13 is coupled to the second node N2 .
请参阅图4,其为本发明另一实施例的移位暂存器的示意图。如图所示,栅极驱动电路包含n级的移位暂存器20,其分别包含移位暂存电路21及远端上拉配合电路22,移位暂存器20的级数可依据显示器的分辨率来决定。在移位暂存电路21当中,第n级移位暂存电路SRn通过第一输出节点Gn连接于扫描线的一端,第n级移位暂存电路SRn耦接于高电压源VGH及低电压源XDONB,且接收正扫信号U2D、反扫信号D2U、本级时钟信号HCn、本级控制信号STn以及重设信号RST,控制第一输出节点Gn的电压来驱动扫描线上的像素。Please refer to FIG. 4 , which is a schematic diagram of a shift register according to another embodiment of the present invention. As shown in the figure, the gate drive circuit includes n-stage shift registers 20, which respectively include a
在本实施例中,远端上拉配合电路22通过第二输出节点Rn连接于扫描线的另一端,远端上拉配合电路22包含上拉晶体管T23及下拉晶体管T24,上拉晶体管T23的第一端耦接本级时钟信号HCn,上拉晶体管T23的第二端耦接于第二输出节点Rn,上拉晶体管T23的控制端耦接于前级移位暂存电路的上拉节点Pn-1。下拉晶体管T24的第一端耦接于第二输出节点Rn,下拉晶体管T22的第二端耦接于低电压源XDONB,下拉晶体管T24的控制端耦接于外接时钟信号RPF。外接时钟信号RPF可为移位暂存器驱动时钟信号外的独立时钟信号源,其时钟信号的相位可为本级时钟信号HCn相位的两倍,通过外接时钟信号RPF来控制下拉晶体管T24,可更有效率的提升电压下降时间。In this embodiment, the remote pull-up
以上所述仅为举例性,而非为限制性者。任何未脱离本发明的构思与范围,而对其进行的等效修改或变更,均应包含于权利要求中。The above descriptions are illustrative only, not restrictive. Any equivalent modification or change without departing from the concept and scope of the present invention shall be included in the claims.
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