WO2017036083A1 - 移位寄存器、其驱动方法、栅极驱动电路及显示装置 - Google Patents
移位寄存器、其驱动方法、栅极驱动电路及显示装置 Download PDFInfo
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- WO2017036083A1 WO2017036083A1 PCT/CN2016/072265 CN2016072265W WO2017036083A1 WO 2017036083 A1 WO2017036083 A1 WO 2017036083A1 CN 2016072265 W CN2016072265 W CN 2016072265W WO 2017036083 A1 WO2017036083 A1 WO 2017036083A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0404—Matrix technologies
- G09G2300/0408—Integration of the drivers onto the display substrate
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
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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
- G09G2310/0264—Details of driving circuits
- G09G2310/0283—Arrangement of drivers for different directions of scanning
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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
- G09G2310/0286—Details of a shift registers arranged for use in a driving circuit
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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
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
Definitions
- the present disclosure relates to the field of display technologies, and in particular, to a shift register, a driving method thereof, a gate driving circuit, and a display device.
- a gate driving signal is generally supplied to a gate of each thin film transistor (TFT) of a pixel region by a gate driving circuit.
- the gate driving circuit can be formed on the array substrate of the display by an array process, that is, a Gate Driver on Array (GOA) process, which not only saves cost but also eliminates the gate integrated circuit (IC). , the integrated circuit of the Bonding area and the fan-out wiring space, so that the design of the narrow border of the display panel can be realized.
- GOA Gate Driver on Array
- a general gate driving circuit is composed of a plurality of cascaded shift registers, and the gate scanning signals are sequentially supplied to the respective gate lines on the display panel through the shift registers of the stages.
- the display device driven by the touch and display time division in order to insert a plurality of touch time periods in a time period of displaying one frame, it is generally required to cascade a plurality of gate driving circuits, and each gate driving circuit Only the corresponding several rows of gate lines are connected, and the function of inserting the touch time period in the time period in which one frame is displayed is realized by controlling the timing of the start trigger signals of the gate drive circuits of the respective stages.
- a shift register, a driving method thereof, and a gate driving circuit provided by some embodiments of the present disclosure
- the display device not only has a simple structure, is advantageous for a narrow bezel design, but also can realize a function of inserting a touch time period in any display time period.
- some embodiments of the present disclosure provide a shift register, including: an input module, a reset module, a touch switching module, a node control module, a first output module, and a second output module, where
- the input module has a first end for receiving an input signal, a second end for receiving a first clock signal, and a third end connected to the first node; the input module is configured to be at a potential and a location of the input signal When the potential of the first clock signal is the first potential, the potential of the first node is the first potential;
- the reset module has a first end for receiving a reset signal, a second end for receiving a third clock signal, and a third end connected to the first node; the reset module is configured to be at a potential of the reset signal And when the potential of the third clock signal is the first potential, the potential of the first node is the first potential;
- the first end of the touch switching module is configured to receive a first touch control signal, the second end is connected to the first node, and the third end is connected to the second node; Controlling, by the first touch control signal, turning on between the first node and the second node in a display phase, and cutting off between the first node and the second node in a touch phase;
- the node control module has a first end for receiving a DC signal, a second end for receiving a fourth clock signal, a third end for receiving a second touch control signal, and a fourth end connected to the first node
- the fifth end is connected to the second node, and the sixth end is connected to the third node
- the node control module is configured to: when the potential of the third node is the first potential, provide the DC signal to the
- the first node provides the fourth clock signal to the third node when the potential of the fourth clock signal is the first potential, and when the potential of the second node is the first potential a second touch control signal is provided to the third node, and when the third node is in a floating state, maintaining a voltage difference between the first end and the third node of the node control module The voltage difference of the previous period;
- the first output module has a first end connected to the second node, a second end for receiving a second clock signal, and a third end connected to a driving signal output end of the shift register; the first output module And configured to: when the potential of the second node is a first potential, provide the second clock signal to the driving signal output end, and when the second node is in a floating state, enable the first The voltage difference between the two nodes and the output of the driving signal is maintained as the voltage difference of the previous period;
- the second output module has a first end connected to the third node, a second end configured to receive the DC signal, and a third end connected to the driving signal output end; the second output module is configured to be used; When the potential of the third node is the first potential, the DC signal is provided to the driving signal output end;
- the effective pulse signal of the input signal When the effective pulse signal of the input signal is high, the first potential is high, the DC signal is low, and the potential of the second touch control signal is low during the display phase.
- the touch phase is high; when the effective pulse signal of the input signal is low, the first potential is low, the DC signal is high, and the potential of the second touch control signal is displayed
- the phase is high and low during the touch phase.
- the method further includes: a third output module
- the third output module has a first end for receiving a third touch control signal, a second end for receiving the DC signal, and a third end connected to the drive signal output end;
- the third output module is configured to provide the DC signal to the driving signal output end during a touch phase under the control of the third touch control signal.
- the input module specifically includes: a first switching transistor; wherein a drain of the first switching transistor is connected to the first node;
- a gate of the first switching transistor for receiving the input signal a source for receiving the first clock signal, or a gate of the first switching transistor for receiving the first clock signal, a source The pole is used to receive the input signal.
- the reset module specifically includes: a second switching transistor; wherein a drain of the second switching transistor is connected to the first node;
- a gate of the second switching transistor for receiving the reset signal a source for receiving the third clock signal, or a gate of the second switching transistor for receiving the third clock signal, a source The pole is used to receive the reset signal.
- the touch switching module specifically includes: a third switching transistor
- the third switching transistor has a gate for receiving the first touch control signal, a source connected to the first node, and a drain connected to the second node.
- the node control module specifically includes: a fourth switching transistor, a fifth switching transistor, a sixth switching transistor, and a first capacitor; wherein
- the fourth switching transistor has a gate connected to the third node, a source for receiving the DC signal, and a drain connected to the first node;
- the fifth switching transistor has a gate and a source for receiving the fourth clock signal, and a drain connected to the third node;
- the sixth switching transistor has a gate connected to the second node, a source for receiving the second touch control signal, and a drain connected to the third node;
- One end of the first capacitor is connected to the third node, and the other end is used to receive the DC signal.
- the first output module specifically includes: a seventh switching transistor and a second capacitor; wherein
- the seventh switching transistor has a gate connected to the second node, a source for receiving the second clock signal, and a drain connected to the output end of the driving signal;
- One end of the second capacitor is connected to the second node, and the other end is connected to the output end of the driving signal.
- the second output module specifically includes: an eighth switching transistor
- the eighth switching transistor has a gate connected to the third node, a source for receiving the DC signal, and a drain connected to the driving signal output end.
- the third output module specifically includes: a ninth switching transistor; wherein
- the ninth switching transistor has a gate for receiving the third touch control signal, a source for receiving the DC signal, and a drain connected to the driving signal output end.
- all the switching transistors are N-type transistors; or When the effective pulse signal of the input signal is low, all switching transistors are P-type transistors.
- some embodiments of the present disclosure further provide a gate driving circuit including a plurality of the above-described shift registers provided by some embodiments of the present disclosure; wherein an input signal of the first stage shift register Input from the start signal terminal; except for the first stage shift register, the input signals of the other shift registers are input by the drive signal output terminal of the upper shift register connected thereto; Outside the register, the reset signals of the remaining shift registers are input by the drive signal output of the next-stage shift register connected thereto.
- some embodiments of the present disclosure also provide a display device including any of the above-described gate driving circuits provided by some embodiments of the present disclosure.
- some embodiments of the present disclosure further provide a driving method of any one of the above shift registers, including: a display phase and a touch phase; wherein the display phase includes a first phase, a second phase, and a third Stage and fourth stage;
- the input module provides the first clock signal to the first node under the control of the input signal; and the control of the first touch control signal by the touch switching module And causing the first node and the second node to be in an on state, and providing a potential of the first node to the second node; and the potential of the node control module at the second node Controlling, by the second touch control signal, the third touch control signal to the third node; the first output module providing the second clock signal to the drive signal output end under the potential control of the second node ;
- the second node In the second stage, the second node is in a floating state, and the first output module maintains a voltage difference between the second node and the output of the driving signal as a voltage difference of a previous period of time, And providing the second clock signal to the driving signal output end under the potential control of the second node; the node control module is configured to control the second touch control under the potential control of the second node a signal is provided to the third node;
- the reset module provides the third clock signal to the first node under the control of the reset signal; and the control of the first touch control signal by the touch switching module And causing the first node and the second node to be in an on state, and providing a potential of the first node to the second node; and the potential of the node control module at the second node Controlling, by the second touch control signal, the third touch control signal to the third node; the first output module providing the second clock signal to the drive signal output end under the potential control of the second node ;
- the node control module provides the fourth clock signal to the third node under the control of the fourth clock signal, and the potential is controlled under the potential control of the third node a DC signal is provided to the first node;
- the touch switching module is in a conducting state between the first node and the second node under the control of the first touch control signal, and The potential of the first node is provided to the second node;
- the second output module provides the DC signal to the output of the driving signal under the potential control of the third node;
- the touch switching module is in an off state between the first node and the second node under the control of the first touch control signal; the second node is in a floating state a state, the first output module maintains a voltage difference between the second node and the output of the driving signal as a voltage difference of a previous period of time, and the node control module is under the control of the second node Providing the second touch control signal to the third node; or the third node is in a floating state, and the node control module is in a voltage between the first end thereof and the third node The difference is maintained as a voltage difference of the previous period; the second output module is configured to provide the DC signal to the drive signal output terminal under the potential control of the third node.
- the touch phase may be inserted between any two adjacent stages of the first phase, the second phase, the third phase, and the fourth phase of the display phase, or may be inserted in the display phase After the fourth stage.
- the touch switching module is in an off state between the first node and the second node under the control of the first touch control signal; the second node is in a floating state, and the first output module enables the second node and the driver
- the voltage difference between the signal output terminals is maintained as the voltage difference of the previous time period, and the node control module provides the second touch control signal to the third node under the control of the second node; the second output module is Providing a DC signal to the drive signal output terminal under the potential control of the third node;
- the touch switching module When the touch phase is inserted after the fourth phase, the touch switching module is in an off state between the first node and the second node under the control of the first touch control signal; the third node is in a floating state
- the node control module maintains a voltage difference between the first end and the third node as a voltage difference of a previous period; the second output module provides a DC signal to the potential control of the third node to Drive signal output.
- the shift register, the driving method thereof, the gate driving circuit and the display device provided by some embodiments of the present disclosure, wherein the shift register comprises: an input module, a reset module, a touch switching module, a node control module, and a first output a module and a second output module; wherein the input module adjusts the potential of the first node by using the input signal and the first clock signal, and the reset module adjusts the potential of the first node by using the reset signal and the third clock signal, and the touch switching module passes The first touch control signal is used to adjust the first node and the second node to be in a conductive state during the display phase, and the first node and the second node are in an off state during the touch phase, and the node control module passes the DC signal and the fourth clock.
- the signal, the second touch control signal, the potential of the second node, and the potential of the third node adjust the potential of the first node and the potential of the third node
- the first output module passes the potential of the second clock signal and the second node Adjusting the potential of the output of the driving signal
- the second output module adjusts the driving by the DC signal and the potential of the third node
- the potential of the signal output terminal can realize the insertion of the touch phase between any two adjacent time periods in the display phase by the mutual cooperation of the above six modules, and output the DC signal when the drive signal output end of the shift register is in the touch phase. When the touch phase is over, the working state of the display phase is continued.
- the shift register is not only simple in structure, but also beneficial to the narrow bezel design, and can realize the function of inserting the touch time period in any display time period.
- 1a is a schematic structural diagram of a shift register provided by some embodiments of the present disclosure.
- FIG. 1b is a second schematic structural diagram of a shift register according to some embodiments of the present disclosure.
- FIG. 2a is a schematic diagram of a specific structure of the shift register provided in FIG. 1a;
- Figure 2b is a second schematic diagram of the structure of the shift register provided in Figure 1a;
- FIG. 3a is a schematic diagram of a specific structure of the shift register provided in FIG. 1b;
- FIG. 3a is a schematic diagram of a specific structure of the shift register provided in FIG. 1b;
- Figure 3b is a second schematic diagram of the structure of the shift register provided in Figure 1b;
- Figure 3c is a third schematic diagram of the specific structure of the shift register provided in Figure 1b;
- Figure 3d is a fourth schematic diagram of the specific structure of the shift register provided in Figure 1b;
- Figure 4a is a fifth schematic diagram of the specific structure of the shift register provided in Figure 1b;
- Figure 4b is a sixth schematic diagram of the specific structure of the shift register provided in Figure 1b;
- 5a to 5e are circuit timing diagrams of the shift register shown in Fig. 2a;
- FIG. 6 is a schematic structural diagram of a gate driving circuit with a unidirectional scanning function according to some embodiments of the present disclosure
- FIG. 7a is a partial circuit timing diagram of the gate drive circuit shown in FIG. 6 in a forward scan
- FIG. 7b is a partial circuit timing diagram of the gate driving circuit shown in FIG. 6 in reverse scanning.
- a shift register provided in this embodiment includes: an input module 1, a reset module 2, a touch switching module 3, a node control module 4, a first output module 5, and a second output module 6; among them,
- the input module 1 has a first end for receiving an input signal Input, a second end for receiving the first clock signal CK1, a third end connected to the first node A, and an input module 1 for inputting an input signal When the potential of the first clock signal CK1 and the potential of the first clock signal CK1 are both the first potential, the potential of the first node A is made the first potential;
- the reset module 2 has a first end for receiving a reset signal Reset, a second end for receiving a third clock signal CK3, a third end connected to the first node A, and a reset module 2 for a potential of the reset signal Reset When the potential of the three clock signals CK3 is the first potential, the potential of the first node A is made the first potential;
- the touch switching module 3 is configured to receive the first touch control signal G1, the second end is connected to the first node A, the third end is connected to the second node B, and the touch switching module 3 is used in the first Under the control of a touch control signal G1, the first node A and the second node B are turned on during the display phase, and the first node A and the second node B are turned off during the touch phase;
- the node control module 4 has a first end for receiving the DC signal V, a second end for receiving the fourth clock signal CK4, a third end for receiving the second touch control signal G2, and a fourth end and the first node A Connected, the fifth end is connected to the second node B, and the sixth end is connected to the third node C.
- the node control module 4 is configured to provide the DC signal V to the first node when the potential of the third node C is the first potential A, when the potential of the fourth clock signal CK4 is the first potential, the fourth clock signal CK4 is supplied to the third node C, and when the potential of the second node B is the first potential, the second touch control signal G2 is provided to The third node C, and when the third node C is in the floating state, keep the voltage difference between the first end and the third node C of the node control module as the voltage difference of the previous period;
- the first output module 5 has a first end connected to the second node B, a second end for receiving the second clock signal CK2, and a third end connected to the drive signal output terminal Output of the shift register;
- the second clock signal CK2 is supplied to the driving signal output terminal Output, and when the second node B is in the floating state, the second node B and the driving signal are output.
- the voltage difference between the terminals is maintained as the voltage difference of the previous period;
- the second output module 6 has a first end connected to the third node C, a second end for receiving the DC signal V, a third end connected to the output of the driving signal output, and a second output module 6 for the third node C.
- the potential is the first potential
- the DC signal V is supplied to the drive signal output terminal Output;
- the effective pulse signal of the input signal Input When the effective pulse signal of the input signal Input is high, the first potential is high, the DC signal V is low, and the potential of the second touch control signal G2 is low during the display phase, and is high during the touch phase. Potential; when the effective pulse signal of the input signal Input is low, the first potential For a low potential, the DC signal V is at a high potential, and the potential of the second touch control signal G2 is at a high potential during the display phase and a low potential during the touch phase.
- the above shift register includes: an input module, a reset module, a touch switching module, a node control module, a first output module, and a second output module; wherein the input module passes the input signal and the first clock
- the signal adjusts the potential of the first node
- the reset module adjusts the potential of the first node by using the reset signal and the third clock signal
- the touch switching module adjusts the first node and the second stage in the display phase by using the first touch control signal
- the node is in an on state, and the first node and the second node are in an off state during the touch phase
- the node control module passes the DC signal, the fourth clock signal, the second touch control signal, the potential of the second node, and the third node.
- the shift register can realize the insertion of the touch phase between any two adjacent time periods in the display phase by the mutual cooperation of the above six modules, and output the DC signal when the drive signal output end of the shift register is in the touch phase. When the touch phase is over, the working state of the display phase is continued.
- the shift register is not only simple in structure, but also beneficial to the narrow bezel design, and can realize the function of inserting the touch time period in any display time period.
- the first clock signal, the second clock signal, the third clock signal, and the fourth clock signal have the same period and the same duty ratio.
- the rising edge of the input signal is aligned with the rising edge of the first clock signal
- the rising edge of the reset signal is aligned with the rising edge of the third clock signal
- the falling edge of the first clock signal is The rising edge of the second clock signal and the falling edge of the input signal are aligned
- the falling edge of the second clock signal is aligned with the rising edge of the third clock signal
- the falling edge of the fourth clock signal is aligned with the rising edge of the first clock signal, and its duty cycle is 0.25; or, when the effective pulse signal of the input signal is low, the falling edge of the input signal Aligned with the falling edge of the first clock signal, the falling edge of the reset signal is aligned with the falling edge of the third clock signal, the rising edge of the first clock signal is aligned with the falling edge of the second clock signal and the rising edge of the input signal, second The rising edge of the clock signal is aligned
- the third output module 7 has a first end for receiving the third touch control signal CK3, a second end for receiving the DC signal V, a third end connected to the driving signal output terminal Output, and a third output module 7 for Under the control of the third touch control signal CK3, the DC signal V is supplied to the drive signal output terminal Output during the touch phase.
- the input module 1 may specifically include: a first switching transistor T1; wherein, the drain of the first switching transistor T1 Connected to the first node A;
- the gate of the first switching transistor T1 is for receiving an input signal Input, and the source is for receiving the first clock signal CK1.
- the gate of the first switching transistor T1 is for receiving the first clock signal CK1
- the source is for receiving the input signal Input.
- the first switching transistor T1 when the effective pulse signal of the input signal Input is high, as shown in FIG. 2a, FIG. 3a, FIG. 3c and FIG. 4a, the first switching transistor T1 may be an N-type switching transistor; or When the effective pulse signal of the input signal Input is low, as shown in FIG. 2b, FIG. 3b, FIG. 3d and FIG. 4b, the first switching transistor T1 may also be a P-type switching transistor, which is not limited herein.
- the potential of the first node A is set to the first potential.
- the above is only a specific structure of the input module in the shift register.
- the specific structure of the input module is not limited to the above structure provided by some embodiments of the present disclosure, and may be other structures known to those skilled in the art. This is not limited.
- the reset module 2 may specifically include: a second switching transistor T2; wherein a drain of the second switching transistor T2 is connected to the first node A;
- the gate of the second switching transistor T2 is for receiving a reset signal Reset, and the source is for receiving the third clock signal CK3.
- the gate of the second switching transistor T2 is for receiving the third clock signal CK3, and the source is for receiving the reset signal Reset.
- the second switching transistor T2 when the effective pulse signal of the input signal Input is high, as shown in FIG. 2a, FIG. 3a, FIG. 3c and FIG. 4a, the second switching transistor T2 may be an N-type switching transistor; or When the effective pulse signal of the input signal Input is low, as shown in FIG. 2b, FIG. 3b, FIG. 3d and FIG. 4b, the second switching transistor T2 may also be a P-type switching transistor; it is not limited herein.
- the potential of the first node A is set to the first potential.
- the above is only a specific structure of the reset module in the shift register.
- the specific structure of the reset module is not limited to the above-mentioned structure provided by some embodiments of the present disclosure, and may be other structures known to those skilled in the art. This is not limited.
- the touch switching module 3 may specifically include: a third switching transistor T3;
- the third switching transistor T3 has a gate for receiving the first touch control signal G1, a source connected to the first node A, and a drain connected to the second node B.
- the third switching transistor T3 when the effective pulse signal of the input signal Input is high, as shown in FIG. 2a, FIG. 3a, FIG. 3c and FIG. 4a, the third switching transistor T3 may be an N-type switching transistor. Alternatively, as shown in FIG. 2b, FIG. 3b, FIG. 3d and FIG. 4b, when the effective pulse signal of the input signal Input is low, the third switching transistor T3 may also be a P-type switching transistor, which is not limited herein.
- the third switching transistor T3 in the display phase, is in an on state under the control of the first touch control signal G1, so that the first node A and the second node B are in an on state; In the touch phase, the third switching transistor T3 is in an off state under the control of the first touch control signal G1, so that the first node A and the second node B are in an off state.
- the foregoing is only a specific structure of the touch switching module in the shift register.
- the specific structure of the touch switching module is not limited to the foregoing structure provided by some embodiments of the present disclosure, and may also be known to those skilled in the art. Other structures are not limited herein.
- the node control module 4 may specifically include: a fourth switching transistor T4, a fifth switching transistor T5, and a sixth switch. a transistor T6 and a first capacitor C1; wherein
- a fourth switching transistor T4 having a gate connected to the third node C, a source for receiving the DC signal V, and a drain connected to the first node A;
- the fifth switching transistor T5 has a gate and a source for receiving the fourth clock signal CK4, and a drain connected to the third node C;
- a sixth switching transistor T6 having a gate connected to the second node B, a source for receiving the second touch control signal G2, and a drain connected to the third node C;
- One end of the first capacitor C1 is connected to the third node C, and the other end is used to receive the DC signal V.
- the fourth switching transistor T4, the fifth switching transistor T5, and the The six-switch transistor T6 can be an N-type switching transistor.
- the fourth switching transistor T4, the fifth switching transistor T5, and the sixth switching transistor T6 may also be The P-type switching transistor is not limited herein.
- the fourth switching transistor T4 when the fourth switching transistor T4 is in an on state under the potential control of the third node C, the DC signal V is supplied to the first node A, and when the fifth switching transistor T5 is at the fourth clock
- the fourth clock signal CK4 is supplied to the third node C
- the sixth switching transistor T6 when the sixth switching transistor T6 is in the on state under the control of the second node B, the second touch control signal is G2 is supplied to the third node C, and when the third node C is in the floating state, the voltage difference between the source of the fourth switching transistor T4 and the third node C is maintained as the previous one according to the bootstrap action of the capacitor.
- the voltage difference of the time period when the fourth switching transistor T4 is in an on state under the potential control of the third node C, the DC signal V is supplied to the first node A, and when the fifth switching transistor T5 is at the fourth clock
- the fourth clock signal CK4 when the signal CK4 is controlled to be in the on state, the fourth clock signal
- the above is only a specific structure of the node control module in the shift register.
- the specific structure of the node control module is not limited to the above structure provided by some embodiments of the present disclosure, and may be other structures known to those skilled in the art. , not limited here.
- the first output module 5 may specifically include: a seventh switching transistor T7 and a second capacitor C2;
- a seventh switching transistor T7 having a gate connected to the second node B, a source for receiving the second clock signal CK2, and a drain connected to the driving signal output terminal Output;
- One end of the second capacitor C2 is connected to the second node B, and the other end is connected to the driving signal output terminal Output.
- the seventh switching transistor T7 when the effective pulse signal of the input signal Input is high, as shown in FIG. 2a, FIG. 3a, FIG. 3c and FIG. 4a, the seventh switching transistor T7 may be an N-type switching transistor. Alternatively, when the effective pulse signal of the input signal Input is low, as shown in FIG. 2b, FIG. 3b, FIG. 3d and FIG. 4b, the seventh switching transistor T7 may also be a P-type switching transistor, which is not limited herein.
- the seventh switching transistor T7 when the seventh switching transistor T7 is in an on state under the control of the second node B, the second clock signal CK2 is supplied to the driving signal output terminal Output, and when the second node B is in the floating state In the connected state, due to the bootstrap action of the second capacitor C2, the voltage difference between the second node B and the drive signal output terminal is maintained as the voltage difference of the previous period.
- the above is only a specific structure of the first output module in the shift register.
- the specific structure of the first output module is not limited to the foregoing structure provided by some embodiments of the present disclosure, and may also be known to those skilled in the art. Other structures are not limited herein.
- the second output module 6 may specifically include: an eighth switching transistor T8;
- the eighth switching transistor T8 has a gate connected to the third node C, a source for receiving the DC signal V, and a drain connected to the driving signal output terminal Output.
- the eighth switching transistor T8 when the effective pulse signal of the input signal Input is high, as shown in FIG. 2a, FIG. 3a, FIG. 3c and FIG. 4a, the eighth switching transistor T8 may be an N-type switching transistor. Alternatively, when the effective pulse signal of the input signal Input is low, as shown in FIG. 2b, FIG. 3b, FIG. 3d and FIG. 4b, the eighth switching transistor T8 may also be a P-type switching transistor, which is not limited herein.
- the eighth switching transistor T8 when the eighth switching transistor T8 is controlled at the third node C When the lower state is in the on state, the DC signal V is supplied to the drive signal output terminal Output.
- the above is only a specific structure of the second output module in the shift register.
- the specific structure of the second output module is not limited to the foregoing structure provided by some embodiments of the present disclosure, and may also be known to those skilled in the art. Other structures are not limited herein.
- the third output module 7 specifically includes: a ninth switching transistor T9;
- the ninth switching transistor T9 has a gate for receiving the third touch control signal G3, a source for receiving the DC signal V, and a drain connected to the driving signal output terminal Output.
- the ninth switching transistor T9 may be an N-type switching transistor.
- the ninth switching transistor T9 may also be a P-type switching transistor, which is not limited herein.
- the ninth switching transistor T9 when the ninth switching transistor T9 is in an on state under the control of the third touch control signal G3, the DC signal V is supplied to the driving signal output terminal Output during the touch phase.
- the second touch control signal G2 and the third touch control signal G3 may be the same touch control signal, as shown in FIG. 3c and FIG. 3d, the ninth switch transistor T9, and the gate thereof is used.
- the second touch control signal G2 is received, the source is used to receive the DC signal V, and the drain is connected to the drive signal output terminal Output.
- the ninth switching transistor T9 when the effective pulse signal of the input signal Input is high, the ninth switching transistor T9 may be an N-type switching transistor. Alternatively, as shown in FIG. 3d, when the effective pulse signal of the input signal Input is low, the ninth switching transistor T9 may also be a P-type switching transistor, which is not limited herein.
- the foregoing is only a specific structure of the third output module in the shift register.
- the specific structure of the third output module is not limited to the foregoing structure provided by some embodiments of the present disclosure, and may also be known to those skilled in the art. Other structures are not limited herein.
- the switching transistors generally adopt transistors of the same material.
- all the switching transistors are N-type transistor; when the effective pulse signal of the input signal is low, all switching transistors are P-type transistors.
- the N-type switching transistor is turned on under a high potential and turned off under a low potential; the P-type switching transistor is turned off under a high potential and is turned on under a low potential.
- the switching transistors mentioned in the above embodiments of the present disclosure are all metal oxide semiconductor field effect transistors (MOS, Metal Oxide Semiconductor).
- MOS Metal Oxide Semiconductor
- the sources and drains of these transistors may be interchanged depending on the type of transistor and the input signal, and no specific distinction is made here.
- the input module and the reset module are symmetrically designed to implement function interchange, and thus the above shift register provided by some embodiments of the present disclosure may implement bidirectional scanning.
- the input module of the shift register is interchanged with the function of the reset module, that is, relative to the forward scan, the reset module is used as the input module, the reset signal is used as the input signal, the input module is used as the reset module, and the input signal is used as the input signal. Reset signal.
- the falling edge of the second clock signal is aligned with the rising edge of the first clock signal, the falling edge of the first clock signal and the rising edge of the fourth clock signal and the input
- the falling edge of the signal is aligned, the falling edge of the fourth clock signal is aligned with the rising edge of the third clock signal; or, when the effective pulse signal of the reset signal is low, the falling edge of the reset signal and the falling edge of the third clock signal Align, the falling edge of the input signal is aligned with the falling edge of the first clock signal, the rising edge of the third clock signal is aligned with the falling edge of the second clock signal and the rising edge of the reset signal, and the rising edge of the second clock signal is first
- the operation of the shift register shown in FIG. 2a is taken as an example.
- all switching transistors are N-type switching transistors, and each N Switching transistor is turned on under high potential and cut off under low potential; DC signal The potential of the number V is low, the potential of the first touch control signal G1 is high at the display stage; the potential of the second touch control signal G2 is low at the display stage; the corresponding input and output timing diagram is as shown in FIG. 5a Show.
- the display phase S1 in the input-output timing diagram shown in FIG. 5a is selected, wherein the display phase S1 is further divided into four phases a, b, c, and d.
- the transistor T7 is both turned on; since the sixth switching transistor T6 is turned on and the low potential second touch control signal G2 is supplied to the third node C, the potential of the third node C is low; The potential is low, so the fourth switching transistor T4 and the eighth switching transistor T8 are both turned off; since the seventh switching transistor T7 is turned on and the high potential second clock signal CK2 is supplied to the driving signal output terminal Output, the driving signal output The terminal output outputs a high potential scan signal.
- the switching transistor T4 is turned on and supplies the low voltage DC signal V to the first node A, so the potential of the first node A is low; since the first node A and the second node B are in the on state, the second node The potential of B is low; since the potential of the second node B is low, the sixth switching transistor T6 and the seventh switching transistor T7 are both turned off; since the eighth switching transistor T8 is turned on and the low-potential DC signal V is supplied
- the drive signal output terminal is output, so the drive signal output terminal Output outputs a low potential scan signal.
- the potential of the third node C is maintained at a high potential, and the fourth switching transistor T4 and the eighth switching transistor T8 are turned on to ensure that the driving signal output terminal Output outputs a low potential scanning signal until the next frame starts.
- the working process is described by taking the structure of the shift register shown in FIG. 2a as an example.
- the touch phase S2 is inserted into the d phase in the display phase S1 on the basis of the above example,
- the potential of a touch control signal G1 is low during the touch phase;
- the potential of the second touch control signal G2 is high during the touch phase;
- the corresponding input and output timing diagram is as shown in FIG. 5b.
- the display phase S1, the touch phase S2, and the display phase S3 in the input/output timing diagram shown in FIG. 5b are selected, wherein the display phase S1 is further divided into four stages a, b, c, and d.
- the specific working process is the same as the working process of the a-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and details are not described herein.
- the specific working process is the same as the working process of the b-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and will not be described herein.
- the specific working process is the same as the working process of the c-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and details are not described herein.
- the working process is the same as the working process of the d-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and will not be described herein.
- the above shift register provided by some embodiments of the present disclosure can realize the insertion of the touch phase S2 into the display phase S1 after the d phase on the basis of some examples described above with reference to FIG. 5a.
- the output of the drive signal output terminal maintains a low-potential scan signal, and after the completion of the touch phase, the operation process after the d-stage of the display phase S1 is continued.
- the operation of the shift register shown in FIG. 2a is taken as an example, and the touch phase S2 is inserted into the c-stage and the d in the display phase S1 on the basis of the above embodiment.
- the potential of the first touch control signal G1 is low in the touch phase; the potential of the second touch control signal G2 is high in the touch phase; the corresponding input and output timing diagram is as shown in FIG. 5c.
- the display phase S1, the touch phase S2, and the display phase S3 in the input/output timing diagram shown in FIG. 5c are selected, wherein the display phase S1 is further divided into three stages of a, b, and c, and the display is performed.
- Stage S3 includes the d stage.
- the specific working process is the same as the working process of the b-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and will not be described herein.
- the specific working process is the same as the working process of the c-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and details are not described herein.
- the above shift register provided by some embodiments of the present disclosure can realize the insertion of the touch phase between the c-stage and the d-stage of the display phase S1 on the basis of some examples described above with reference to FIG. 5a by only eight switching transistors. S2, when the touch phase starts, the output of the drive signal output terminal maintains a low potential scan signal.
- the operation of the shift register shown in FIG. 2a is taken as an example, and the touch phase S2 is inserted into the display phase S1 based on some examples described above with reference to FIG. 5a.
- the potential of the first touch control signal G1 is at the touch level
- the segment is low potential; the potential of the second touch control signal G2 is high in the touch phase; the corresponding input and output timing diagram is as shown in FIG. 5d.
- the display phase S1, the touch phase S2, and the display phase S3 in the input/output timing diagram shown in FIG. 5d are selected.
- the display phase S1 is further divided into two phases a and b, and the display phase S3 is displayed. It is divided into two stages, c and d.
- the specific working process is the same as the working process of the b-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and will not be described herein.
- the drive signal output terminal Output outputs a low potential scan signal. It can be seen that the working process of the c-stage of the display phase S3 is the same as the working process of the c-stage of the display phase S1 in some examples described above with reference to FIG. 5a, and will not be described herein.
- the above shift register provided by some embodiments of the present disclosure can realize the insertion of the touch phase between the b phase and the c phase of the display phase S1 on the basis of some examples described above with reference to FIG. 5a by only eight switching transistors. S2, after the start of the touch phase S2, the output of the drive signal output terminal maintains a low potential scan signal.
- the operation of the shift register shown in FIG. 2a is taken as an example, and the touch phase S2 is inserted into the display phase S1 based on some examples described above with reference to FIG. 5a.
- the potential of the first touch control signal G1 is at the touch level
- the segment is low potential; the potential of the second touch control signal G2 is high during the touch phase; the corresponding input and output timing diagram is as shown in FIG. 5e.
- the display phase S1, the touch phase S2, and the display phase S3 in the input/output timing diagram shown in FIG. 5e are selected.
- the display phase S1 includes: a phase, and the display phase S3 is divided into b, c. And three stages of d.
- the potential of the second node B is kept at a high potential to ensure that In the stage, the sixth switching transistor T6 and the seventh switching transistor T7 are both turned on; since the sixth switching transistor T6 is turned on and the high potential second touch control signal G2 is supplied to the third node C, the third node C The potential is high; since the potential of the third node C is high, the fourth switching transistor T4 and the eighth switching transistor T8 are both turned on; since the eighth switching transistor T8 is turned on and the low-potential DC signal is supplied to the driving The signal output terminal is output, so the drive signal output terminal Output outputs a low potential scan signal.
- the transistor T7 is both turned on; since the sixth switching transistor T6 is turned on and the low potential second touch control signal G2 is supplied to the third node C, the potential of the third node C is low; The potential is low, so the fourth switching transistor T4 and the eighth switching transistor T8 are both turned off; since the seventh switching transistor T7 is turned on and the high potential second clock signal CK2 is supplied to the driving signal output terminal Output, the driving signal output The terminal output outputs a high potential scan signal. It can be seen that the work process of the b-stage of the display phase S3 has been performed with the b-stage of the display phase S1 in some of the examples described above with reference to Figure 5a. The same process.
- the above shift register provided by some embodiments of the present disclosure can realize the insertion of the touch phase between the a phase and the b phase of the display phase S1 on the basis of some examples described above with reference to FIG. 5a by only eight switching transistors. S2, after the start of the touch phase S2, the output of the drive signal output terminal maintains a low potential scan signal.
- the above-mentioned shift register provided by some embodiments of the present disclosure can realize the insertion of the touch phase between any two adjacent time periods in the display phase by using eight switching transistors, and the driving signal of the shift register when the touch phase is performed.
- the output terminal outputs a DC signal, and when the touch phase ends, the operation state of the display phase is continued.
- the shift register is not only simple in structure, but also beneficial to the narrow bezel design, and can realize the function of inserting the touch time period in any display time period.
- some embodiments of the present disclosure further provide a driving method of any one of the above shift registers, including: a display phase and a touch phase; wherein the display phase includes a first phase, a second phase, a third phase, and Fourth stage;
- the input module provides the first clock signal to the first node under the control of the input signal;
- the touch switching module enables the first node and the second node to be turned on under the control of the first touch control signal a state, and providing a potential of the first node to the second node;
- the node control module provides the second touch control signal to the third node under the potential control of the second node; the potential control of the first output module at the second node Providing a second clock signal to the drive signal output end;
- the second node In the second stage, the second node is in a floating state, and the first output module maintains the voltage difference between the second node and the output of the driving signal as the voltage difference of the previous period, and under the potential control of the second node
- the second clock signal is provided to the driving signal output end; the node control module provides the second touch control signal to the third node under the potential control of the second node;
- the reset module provides the third clock signal to the first node under the control of the reset signal;
- the touch switching module enables the first node and the second node to be turned on under the control of the first touch control signal a state, and providing a potential of the first node to the second node;
- the node control module provides the second touch control signal to the third node under the potential control of the second node; the potential control of the first output module at the second node Providing a second clock signal to the drive signal output end;
- the node control module provides the fourth clock signal to the third node under the control of the fourth clock signal, and provides the DC signal to the first node under the potential control of the third node;
- the control switching module enables the first node and the second node to be in an on state under the control of the first touch control signal, and provides the potential of the first node to the second node;
- the second output module is at the third node Providing a DC signal to the drive signal output terminal under potential control;
- the touch switching module is in an off state between the first node and the second node under the control of the first touch control signal; the second node is in a floating state, and the first output module enables the second node and the driver
- the voltage difference between the signal output ends is maintained as the voltage difference of the previous time period, and the node control module provides the second touch control signal to the third node under the control of the second node; or the third node is in the floating state
- the node control module maintains the voltage difference between the first end and the third node as the voltage difference of the previous period; the second output module is configured to provide the DC signal to the driving signal under the potential control of the third node Output.
- the touch phase may be inserted between any two adjacent stages in the first phase, the second phase, the third phase, and the fourth phase of the display phase. And can be inserted after the fourth stage of the display phase, which is not limited herein.
- the touch switching module is first Under the control of the touch control signal, the first node and the second node are in an off state; the second node is in a floating state, and the first output module maintains a voltage difference between the second node and the drive signal output end.
- the voltage difference of the time period the node control module provides the second touch control signal to the third node under the control of the second node; the second output module provides the DC signal to the drive signal output under the potential control of the third node end.
- the touch switching module is in an off state between the first node and the second node under the control of the first touch control signal; the third node is in a floating state, and the node is controlled.
- the module maintains the voltage difference between its first end and the third node as the voltage difference of the previous period; the second output module supplies the DC signal to the drive signal output terminal under the potential control of the third node.
- some embodiments of the present disclosure also provide a gate driving circuit, as shown in FIG. 6, including a plurality of cascaded shift registers: SR(1), SR(2)...SR(n) ...SR(N-1), SR(N) (a total of N shift registers, 1 ⁇ n ⁇ N), the input signal Input of the first stage shift register SR(1) is input by the start signal STV, except In addition to the primary shift register SR(1), the remaining stages are shifted The input signal Input of the register SR(n) is input by the scan signal outputted by the drive signal output terminal Output_n-1 of the upper stage shift register SR(n-1) connected thereto; each stage shift register SR(n) The reset signal Reset is input by the scan signal output from the drive signal output terminal Output_n+1 of the next-stage shift register SR(n+1) connected thereto.
- each shift register in the above-mentioned gate driving circuit is the same as the above-mentioned shift register of the present disclosure, and the details are not described again.
- the first clock signal, the second clock signal, the third clock signal, the fourth clock signal, the first touch control signal, the second touch control signal, and the direct current are input to the shift registers of each stage.
- the first clock signal CK1 of the 4n+1th stage shift register and the fourth clock of the 4th + 2nd stage shift register The signal CK4, the third clock signal CK3 of the 4th + 3rd stage shift register, and the second clock signal CK2 of the 4th + 4th stage shift register are all input by the same clock signal end, that is, the first clock signal terminal ck1; 4n
- the third clock signal CK3 of the bit register is input by the same clock signal terminal, that is, the second clock signal terminal ck2; the third clock signal CK3 of the 4n+1th stage shift register, and the second clock of the 4n+2th stage shift register
- the potential of the first node A_1 of the first stage shift register SR(1), the potential of the second node B_1, and the potential of the drive signal output terminal Output_1 are both low, and the potential of the third node C_1 is high;
- the specific working process of the second stage shift register SR(2) to the tenth stage shift register SR(10) is the same as the specific working process of the first stage shift register SR(1), and the specific timing thereof is not shown in FIG. 7a. show;
- the specific operation of the eleventh stage shift register SR (11) is similar to the operation of inserting the touch stage S2 between the c stage and the d stage in the display stage S1 in some embodiments described above with reference to FIG. 5c.
- the potential of the first node A_11, the potential of the second node B_11 and the potential of the drive signal output terminal Output_11 in the control phase S2 are both low, and the potential of the third node C_11 is high;
- the specific working process of the twelfth stage shift register SR (12) is the same as the operation of inserting the touch phase S2 between the b phase and the c phase in the display phase S1 in some embodiments described above with reference to FIG. 5d.
- the potential of the first node A_12 and the potential of the drive signal output terminal Output_12 in the control phase S2 are both low, and the potential of the second node B_12 and the potential of the third node C_12 are high;
- the specific operation of the thirteenth stage shift register SR (13) is the same as the operation of inserting the touch phase S2 between the a phase and the b phase in the display phase S1 in some embodiments described above with reference to FIG. 5e.
- the potential of the first node A_13 and the potential of the drive signal output terminal Output_13 in the control phase S2 are both low, and the potential of the second node B_13 and the potential of the third node C_13 are high;
- the shift registers of each stage normally output the scan signal until the next touch phase starts or the next frame starts.
- the gate driving circuit exchanges the functions of the input module of each shift register and the reset module when performing gate line bidirectional scanning, that is, relative to the forward scan, each shift register in the reverse scan
- the reset module is used as the input module
- the reset signal is used as the input signal
- the input module of each shift register is used as the reset module
- the input signal is used as the reset signal.
- the potential of the first node A_N of the Nth stage shift register SR(N), the potential of the second node B_N, and the potential of the drive signal output terminal Output_N are both low, and the potential of the third node C_N is high;
- N-10th stage shift register SR (N-10) is similar to the operation of inserting the touch stage S2 between the c stage and the d stage in the display stage S1 in some embodiments described above with reference to FIG. 5c.
- the potential of the first node A_N-10, the potential of the second node B_N-10, and the potential of the drive signal output terminal Output_N-10 are both low, and the potential of the third node C_N-10 is high. ;
- N-11th shift register SR (N-11) is the same as the operation of inserting the touch phase S2 between the b phase and the c phase in the display phase S1 in some embodiments described above with reference to FIG. 5d.
- the potential of the first node A_N-11 and the potential of the drive signal output terminal Output_N-11 are both low, and the potential of the second node B_N-11 and the potential of the third node C_N-11 are high. ;
- N-12th stage shift register SR (N-12) is the same as the operation of inserting the touch stage S2 between the a stage and the b stage in the display stage S1 in some embodiments described above with reference to FIG. 5e.
- the potential of the first node A_N-12 and the potential of the drive signal output terminal Output_N-12 are both low, and the potential of the second node B_N-12 and the potential of the third node C_N-12 are high. ;
- the shift registers of each stage normally output the scan signal until the next touch phase starts or the next frame starts.
- some embodiments of the present disclosure also provide a display device including the above-described gate driving circuit.
- the gate driving circuit provides scanning signals for the gate lines on the array substrate in the display device.
- the specific implementation refer to the description of the gate driving circuit, and the details are not described herein again.
- the shift register comprises: an input module, a reset module, a touch switching module, a node control module, a first output module, and a second output module; wherein the input module passes the input signal and the first clock signal Adjusting the potential of the first node, the reset module adjusts the potential of the first node by using the reset signal and the third clock signal, and the touch switching module adjusts the first node and the second node in the display phase by using the first touch control signal In the on state, the first node and the second node are in an off state during the touch phase, and the node control module passes the DC signal, the fourth clock signal, the second touch control signal, the potential of the second node, and the potential of the third node.
- the first output module adjusts the potential of the output of the driving signal by the second clock signal and the potential of the second node
- the second output module passes the DC signal and the potential of the third node
- the shift register can realize the insertion of the touch phase between any two adjacent time periods in the display phase by the mutual cooperation of the above six modules, and output the DC signal when the drive signal output end of the shift register is in the touch phase. When the touch phase is over, the working state of the display phase is continued.
- the shift register is not only simple in structure, but also beneficial to the narrow bezel design, and can realize the function of inserting the touch time period in any display time period.
Abstract
Description
Claims (15)
- 一种移位寄存器,包括:输入模块、复位模块、触控切换模块、节点控制模块、第一输出模块和第二输出模块,其中,所述输入模块,其第一端用于接收输入信号,第二端用于接收第一时钟信号,第三端与第一节点相连;所述输入模块用于在所述输入信号的电位和所述第一时钟信号的电位均为第一电位时,使所述第一节点的电位为第一电位;所述复位模块,其第一端用于接收复位信号,第二端用于接收第三时钟信号,第三端与所述第一节点相连;所述复位模块用于在所述复位信号的电位和所述第三时钟信号的电位均为第一电位时,使所述第一节点的电位为第一电位;所述触控切换模块,其第一端用于接收第一触控控制信号,第二端与所述第一节点相连,第三端与第二节点相连;所述触控切换模块用于在第一触控控制信号的控制下在显示阶段使所述第一节点与所述第二节点之间导通,在触控阶段使所述第一节点与所述第二节点之间截止;所述节点控制模块,其第一端用于接收直流信号,第二端用于接收第四时钟信号,第三端用于接收第二触控控制信号,第四端与所述第一节点相连,第五端与所述第二节点相连,第六端与第三节点相连;所述节点控制模块用于,在所述第三节点的电位为第一电位时将所述直流信号提供给所述第一节点,在所述第四时钟信号的电位为第一电位时将所述第四时钟信号提供给所述第三节点,在所述第二节点的电位为第一电位时将所述第二触控控制信号提供给所述第三节点,以及在所述第三节点处于浮接状态时,使所述节点控制模块的第一端与所述第三节点之间的电压差保持为上一时间段的电压差;所述第一输出模块,其第一端与所述第二节点相连,第二端用于接收第二时钟信号,第三端与移位寄存器的驱动信号输出端相连;所述第一输出模块用于,在所述第二节点的电位为第一电位时,将所述第二时钟信号提供给所述驱动信号输出端,以及在所述第二节点处于浮接状态时,使所述第二节点与所述驱动信号输出端之间的电压差保持为上一时间段的电压差;以及所述第二输出模块,其第一端与所述第三节点相连,第二端用于接收所述直流信号,第三端与所述驱动信号输出端相连;所述第二输出模块用于在所述第三节点的电位为第一电位时,将所述直流信号提供给所述驱动信号输出端,其中,当所述输入信号的有效脉冲信号为高电位时,所述第一电位为高电位,所述直流信号为低电位,且所述第二触控控制信号的电位在显示阶段为低电位,在触控阶段为高电位;当所述输入信号的有效脉冲信号为低电位时,所述第一电位为低电位,所述直流信号为高电位,所述第二触控控制信号的电位在显示阶段为高电位,在触控阶段为低电位。
- 如权利要求1所述的移位寄存器,还包括:第三输出模块,其第一端用于接收第三触控控制信号,第二端用于接收所述直流信号,第三端与所述驱动信号输出端相连;所述第三输出模块用于在所述第三触控控制信号的控制下,在触控阶段将所述直流信号提供给所述驱动信号输出端。
- 如权利要求1所述的移位寄存器,其中,所述输入模块包括:第一开关晶体管;其中,所述第一开关晶体管的漏极与所述第一节点相连;所述第一开关晶体管的栅极用于接收所述输入信号,源极用于接收所述第一时钟信号;或所述第一开关晶体管的栅极用于接收所述第一时钟信号,源极用于接收所述输入信号。
- 如权利要求1所述的移位寄存器,其中,所述复位模块包括:第二开关晶体管;其中,所述第二开关晶体管的漏极与所述第一节点相连;所述第二开关晶体管的栅极用于接收所述复位信号,源极用于接收所述第三时钟信号;或所述第二开关晶体管的栅极用于接收所述第三时钟信号,源极用于接收所述复位信号。
- 如权利要求1所述的移位寄存器,其中,所述触控切换模块包括:第三开关晶体管,其栅极用于接收所述第一触控控制信号,源极与所述第一节点相连,漏极与所述第二节点相连。
- 如权利要求1所述的移位寄存器,其中,所述节点控制模块包括:第四开关晶体管、第五开关晶体管、第六开关晶体管和第一电容;其中,所述第四开关晶体管,其栅极与所述第三节点相连,源极用于接收所述直流信号,漏极与所述第一节点相连;所述第五开关晶体管,其栅极和源极均用来接收所述第四时钟信号,漏极与所述第三节点相连;所述第六开关晶体管,其栅极与所述第二节点相连,源极用于接收所述第二触控控制信号,漏极与所述第三节点相连;所述第一电容的一端与所述第三节点相连,另一端用于接收所述直流信号。
- 如权利要求1所述的移位寄存器,其中,所述第一输出模块包括:第七开关晶体管和第二电容;其中,所述第七开关晶体管,其栅极与所述第二节点相连,源极用于接收所述第二时钟信号,漏极与所述驱动信号输出端相连;所述第二电容的一端与所述第二节点相连,另一端与所述驱动信号输出端相连。
- 如权利要求1所述的移位寄存器,其中,所述第二输出模块包括:第八开关晶体管,其栅极与所述第三节点相连,源极用于接收所述直流信号,漏极与所述驱动信号输出端相连。
- 如权利要求2所述的移位寄存器,其中,所述第三输出模块包括:第九开关晶体管,其栅极用于接收所述第三触控控制信号,源极用于接收所述直流信号,漏极与所述驱动信号输出端相连。
- 如权利要求1-9中任一项所述的移位寄存器,其中,当所述输入信号的有效脉冲信号为高电位时,所有开关晶体管均为N型晶体管;或者当所述输入信号的有效脉冲信号为低电位时,所有开关晶体管均为P型晶体管。
- 一种栅极驱动电路,包括级联的多个如权利要求1-10中任一项所述的移位寄存器;其中,第一级移位寄存器的输入信号由起始信号端输入;除第一级移位寄存器之外,其余各级移位寄存器的输入信号均由与其连 接的上一级移位寄存器的驱动信号输出端输入;除最后一级移位寄存器之外,其余各级移位寄存器的复位信号均由与其连接的下一级移位寄存器的驱动信号输出端输入。
- 一种显示装置,包括如权利要求11所述的栅极驱动电路。
- 一种如权利要求1-10任一项所述的移位寄存器的驱动方法,包括:显示阶段和触控阶段;其中,所述显示阶段包括第一阶段、第二阶段、第三阶段和第四阶段;所述第一阶段,所述输入模块在所述输入信号的控制下将所述第一时钟信号提供给所述第一节点;所述触控切换模块在所述第一触控控制信号的控制下使所述第一节点和所述第二节点之间处于导通状态,并将所述第一节点的电位提供给所述第二节点;所述节点控制模块在所述第二节点的电位控制下将所述第二触控控制信号提供给所述第三节点;所述第一输出模块在所述第二节点的电位控制下将所述第二时钟信号提供给所述驱动信号输出端;所述第二阶段,所述第二节点处于浮接状态,所述第一输出模块使所述第二节点与所述驱动信号输出端之间的电压差保持为上一时间段的电压差,以及在所述第二节点的电位控制下将所述第二时钟信号提供给所述驱动信号输出端;所述节点控制模块在所述第二节点的电位控制下将所述第二触控控制信号提供给所述第三节点;所述第三阶段,所述复位模块在所述复位信号的控制下将所述第三时钟信号提供给所述第一节点;所述触控切换模块在所述第一触控控制信号的控制下使所述第一节点和所述第二节点之间处于导通状态,并将所述第一节点的电位提供给所述第二节点;所述节点控制模块在所述第二节点的电位控制下将所述第二触控控制信号提供给所述第三节点;所述第一输出模块在所述第二节点的电位控制下将所述第二时钟信号提供给所述驱动信号输出端;所述第四阶段,所述节点控制模块在所述第四时钟信号的控制下将所述第四时钟信号提供给所述第三节点,以及在所述第三节点的电位控制下将所述直流信号提供给所述第一节点;所述触控切换模块在所述第一触控控制信号的控制下使所述第一节点和所述第二节点之间处于导通状态,并将所述第一节点的电位提供给所述第二节点;所述第二输出模块在所述第三节点的电 位控制下将所述直流信号提供给所述驱动信号输出端;所述触控阶段,所述触控切换模块在所述第一触控控制信号的控制下使所述第一节点和所述第二节点之间处于截止状态;所述第二节点处于浮接状态,所述第一输出模块使所述第二节点与所述驱动信号输出端之间的电压差保持为上一时间段的电压差,所述节点控制模块在所述第二节点的控制下将所述第二触控控制信号提供给所述第三节点;或者,所述第三节点处于浮接状态,所述节点控制模块在使其第一端与所述第三节点之间的电压差保持为上一时间段的电压差;所述第二输出模块用于在所述第三节点的电位控制下将所述直流信号提供给所述驱动信号输出端。
- 如权利要求13所述的移位寄存器的驱动方法,其中,所述触控阶段可以插入在显示阶段的所述第一阶段、第二阶段、第三阶段和第四阶段任意相邻的两阶段之间,或者可以插入在显示阶段的所述第四阶段之后。
- 如权利要求14所述的移位寄存器的驱动方法,其中,当将触控阶段插入到所述第一阶段和第二阶段之间,或所述第二阶段和第三阶段之间,或所述第三阶段和第四阶段之间时,所述触控切换模块在第一触控控制信号的控制下使第一节点和第二节点之间处于截止状态;第二节点处于浮接状态,所述第一输出模块使第二节点与驱动信号输出端之间的电压差保持为上一时间段的电压差,所述节点控制模块在第二节点的控制下将第二触控控制信号提供给第三节点;所述第二输出模块在第三节点的电位控制下将直流信号提供给驱动信号输出端;以及当将触控阶段插入到第四阶段之后时,所述触控切换模块在第一触控控制信号的控制下使第一节点和第二节点之间处于截止状态;第三节点处于浮接状态,所述节点控制模块在使其第一端与第三节点之间的电压差保持为上一时间段的电压差;所述第二输出模块在第三节点的电位控制下将直流信号提供给驱动信号输出端。
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JP6673601B2 (ja) | 2020-03-25 |
CN105185290A (zh) | 2015-12-23 |
JP2018529109A (ja) | 2018-10-04 |
EP3346458B1 (en) | 2020-03-04 |
US9791968B2 (en) | 2017-10-17 |
EP3346458A4 (en) | 2019-03-27 |
CN105185290B (zh) | 2017-10-10 |
EP3346458A1 (en) | 2018-07-11 |
KR20170041685A (ko) | 2017-04-17 |
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US20170269769A1 (en) | 2017-09-21 |
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