WO2016165550A1 - 触控驱动单元和电路、显示面板及显示装置 - Google Patents
触控驱动单元和电路、显示面板及显示装置 Download PDFInfo
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- WO2016165550A1 WO2016165550A1 PCT/CN2016/077485 CN2016077485W WO2016165550A1 WO 2016165550 A1 WO2016165550 A1 WO 2016165550A1 CN 2016077485 W CN2016077485 W CN 2016077485W WO 2016165550 A1 WO2016165550 A1 WO 2016165550A1
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- transistor
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- pole
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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
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
- G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
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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
- G06F3/0412—Digitisers structurally integrated in a display
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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
Definitions
- the present invention relates to the field of display technologies, and in particular, to a touch driving unit and circuit, a display panel, and a display device.
- In Cell technology (a technology that integrates touch components into the inside of the display panel) allows the display panel to integrate touch functions, making the module thinner and lighter and more transparent.
- Hybrid In Cell technology a hybrid touch technology
- the RX (touch receiving electrode) layer is on the outside of the color film substrate
- the TX (touch emission electrode) layer is in the Hybrid In Cell technology. It is shared with the common electrode layer of the display panel.
- the touch drive circuit of the touch emitter electrode needs to be integrated into the driver IC, that is, it needs to be separate.
- a touch drive circuit for customizing TX in a driver chip is produced, so that once a component in the touch drive circuit has a problem, the entire driver IC needs to be reworked, which is disadvantageous for cost control and gives a narrow border of the display panel. Turning obstacles.
- Embodiments of the present invention provide a touch driving unit and circuit, a display panel, and a display device, which are advantageous for achieving a narrow frame of the display panel and capable of effectively controlling cost.
- An aspect of the present invention provides a touch driving unit, where the touch driving unit includes:
- the shift control module includes a start signal end, an output end, and at least one clock signal end;
- the selection module includes a first input end and a second input And an output terminal;
- the buffer module includes an input end and an output end;
- the amplitude control module includes an input end and an output end;
- the output end of the selection control module is connected to the first input end of the selection module; the second input end of the selection module inputs a touch time division control signal, and the output end of the selection module is connected to the buffer An input end of the module, an output end of the buffer module is connected to an input end of the amplitude control module; an output end of the amplitude control module is connected to a touch transmitting electrode;
- the shift control module is configured to generate a shift register signal at the output end under the control of the start signal end and the at least one clock signal end;
- the selecting module is configured to output a high level signal or a low level signal according to the joint action of the touch time sharing control signal and the shift register signal generated by the shift control module;
- the buffer module is configured to convert a level of a signal output by the selection module to a level equal to a control signal of an input end of the signal amplitude control module;
- the amplitude control module is configured to pull up or lower the amplitude of the signal output by the buffer module to generate a touch time-division driving signal, and output the touch time-sharing driving signal to the touch transmitting electrode.
- the selection module includes: an AND gate circuit.
- the AND gate circuit includes:
- a first transistor a first pole of the first transistor is connected to a voltage terminal, a gate of the first transistor is input to the touch time sharing control signal, and a second pole and a fifth transistor of the first transistor are Gate connection
- a third transistor a first pole of the third transistor is connected to a second pole of the first transistor, a gate of the third transistor is input to the touch time sharing control signal, and a second pole of the third transistor Connected to the first pole of the fourth transistor;
- a gate of the fourth transistor is connected to an output end of the shift control module, and a second pole of the fourth transistor is grounded;
- a first pole of the second transistor is connected to a voltage terminal, a gate of the second transistor is connected to a gate of the fourth transistor, and a second pole of the second transistor is opposite to the first transistor a first pole connection of three transistors;
- a fifth transistor a first pole of the fifth transistor is connected to the voltage terminal, a gate of the fifth transistor is connected to a gate of the sixth transistor, and a second pole of the fifth transistor is opposite to the selection module Output connection;
- a sixth transistor a first pole of the sixth transistor is connected to a second pole of the fifth transistor, and a second pole of the sixth transistor is grounded.
- the first transistor, the second transistor, and the fifth transistor belong to the same type of transistor
- the third transistor, the fourth transistor, and the sixth transistor belong to the same type of transistor.
- the shift control module includes a shift register.
- the buffer module includes: a first inverter and a second inverter, wherein:
- An input end of the first inverter is connected to an output end of the selection module, and an output end of the first inverter is connected to an input end of the second inverter;
- An output of the second inverter is coupled to an input of the amplitude control module.
- the amplitude control module includes:
- a cathode of the first diode is connected to the first level terminal, and an anode of the first diode is connected to an output end of the buffer module;
- a second diode an anode of the second diode being coupled to the second level terminal, and a cathode of the second diode being coupled to an output of the buffer module.
- the amplitude control module comprises: a transmission gate circuit.
- the transmission gate circuit includes:
- a third inverter an input end of the third inverter is connected to an output end of the buffer module, and an output end of the third inverter is connected to a gate of the seventh transistor;
- a first pole of the seventh transistor is connected to the second level terminal, and a second pole of the seventh transistor is connected to an output end of the amplitude control module;
- a first pole of the eighth transistor is connected to the second level terminal, a gate of the eighth transistor is connected to an output end of the buffer module, and a second pole of the eighth transistor is opposite to the amplitude control module Output connection;
- a gate of the ninth transistor is connected to an output of the third inverter, a first pole of the ninth transistor is connected to the first level terminal, and a second pole of the ninth transistor is opposite to the frame
- the output of the value control module is connected;
- a first pole of the tenth transistor is connected to the first level terminal, a gate of the tenth transistor is connected to an output end of the buffer module, and a second pole of the tenth transistor and an output of the amplitude control module End connection.
- a touch driving circuit includes a plurality of stages, such as any one of the above touch driving units;
- the start signal end of each of the touch control unit of the touch driving unit is connected to the adjacent one-level touch driving unit The output of the shift control module;
- the output end of the shift control module in each of the touch driving units is connected to the start signal end of the shift control module of the adjacent lower touch driving unit.
- An aspect of the present invention provides a display panel including a gate driving circuit and a touch driving circuit disposed in a non-display area, wherein the touch driving circuit is a touch driving circuit as described above, wherein:
- the touch driving circuit is disposed outside the gate driving circuit and is driven by the same clock signal as the gate driving circuit.
- a display device including the display panel as described above is provided.
- Embodiments of the present invention provide a touch driving unit and circuit, a display panel, and a display device, including a shift control module, a selection module, a buffer module, and an amplitude control module, which can be shared by the touch transmitting electrode and the common electrode.
- the touch-sensing electrode layer of the touch-display panel of the time-division-driven touch display panel outputs a touch-time driving signal and a VCOM common voltage of the common electrode layer, and the touch driving circuit can be fabricated in the non-display area of the display panel.
- the touch driving circuit of the TX is customized as in the prior art, which is beneficial to realize the narrow frame of the display panel, and at the same time, the touch driving circuit is beneficial to ensure the product yield in the manufacturing process of the display panel. Thus, effective control of costs can be achieved.
- FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a touch driving circuit according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a touch driving circuit according to another embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a touch driving unit according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a selection film block according to another embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of a buffer module according to an embodiment of the present invention.
- FIG. 7 is a schematic structural diagram of an amplitude control module according to an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of an amplitude control module according to another embodiment of the present invention.
- FIG. 9 is a schematic diagram showing a timing state of a driving signal of a touch driving circuit according to an embodiment of the present invention.
- the transistor used in all embodiments of the present invention may be a thin film transistor or a field effect transistor or other device having the same characteristics. Since the source and the drain of the transistor used herein are symmetrical, the source and the drain are interchangeable. of. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the gate, one of the poles is referred to as a source and the other pole is referred to as a drain. In addition, the transistor used in the embodiment of the present invention includes two types of a P-type transistor and an N-type transistor.
- an embodiment of the present invention provides a display panel including a gate driving circuit GOA and a touch driving circuit TX-GOA disposed in a non-display area, and a touch driving circuit TX-GOA is disposed on the gate driving.
- the outside of the circuit GOA is driven by the same clock signal as the gate drive circuit GOA.
- the display panel includes a display area AA and a non-display area other than the display area AA, wherein only one gate driving circuit GOA and the touch driving circuit TX-GOA are shown in FIG. 1 .
- a double-sided driving example is given in the legend.
- the gate driving circuit GOA and the touch driving circuit including only the left side or the right side of the display area AA in the legend may be included.
- the TX-GOA, or the gate driving circuit GOA and the touch driving circuit TX-GOA are respectively disposed on both sides of the display area AA; in addition, according to the prior art display panel, the method further includes: an ESD module (Chinese: electrostatic discharge, English: Electro-Static discharge), Buffer Storage capacitors), COG (Chinese: Chip-on Glass, English: Chip On Glass), and FPC (English: Flexible Printed Circuit Board) for signal output display panels. It is not shown in the drawings, but it can be understood that the implementation of the present scheme can include these structures.
- ESD module Choinese: electrostatic discharge, English: Electro-Static discharge
- Buffer Storage capacitors Buffer Storage capacitors
- COG Chip-on Glass
- English Chip On Glass
- FPC Flexible Printed Circuit Board
- the touch driving circuit can be fabricated in the non-display area of the display panel, the touch driving circuit of the TX is customized as in the prior art, and the display panel is narrowed.
- the frame is formed, and at the same time, the touch driving circuit is manufactured in the manufacturing process of the display panel to ensure the product yield, thereby enabling cost effective control.
- an embodiment of the present invention provides a touch driving circuit, which is applied to the above display panel, and includes: a multi-level touch driving unit TXDU.
- the touch driving unit TXDU includes: a shift control module (SRU) 21, a selection module (AND) 22, a buffer module (Buffer) 23, and an amplitude control module (VC) 24;
- the module 25 includes a start signal terminal STV, an output terminal OUT1 and at least one clock signal terminal CLK.
- the selection module 22 includes a first input terminal IN1, a second input terminal IN2 and an output terminal OUT2.
- the buffer module 23 includes an input terminal IN3 and an output terminal.
- the amplitude control module 24 includes an input terminal IN4, a first level terminal V1, a second level terminal V2 and an output terminal OUT4; wherein the output terminal OUT1 of the shift control module 11 is connected to the first input terminal IN1 of the selection module 12;
- the second input terminal IN of the selection module 12 inputs the touch time-sharing control signal EXVCOM, the output terminal OUT2 of the selection module 12 is connected to the input terminal IN3 of the buffer module 13, and the output terminal OUT3 of the buffer module 13 is connected to the input terminal of the amplitude control module 14.
- IN4; the output terminal OUT4 of the amplitude control module 14 is connected to the touch transmitting electrode TX.
- the shift control module 21 can be a shift register, wherein FIG.
- FIG. 2 and FIG. 3 exemplarily show a scheme controlled by two system clocks clockA and clockB, wherein clockA controls an odd-numbered shift register, clockB Control the shift register of even rows; or, clockA controls the shift register of even rows, clockB controls the shift register of odd rows; wherein clockA and clockB have opposite phases, of course, each of the above shift registers is controlled by a clock signal.
- the shift register may also be a shift register controlled by two or more system clocks, that is, the specific structure of the shift register is not limited in the present application, as long as the technical solution of the present invention can be implemented. Any of the shift registers can be used.
- the start signal end of each of the touch control units of the touch driving unit is connected to the adjacent upper-level touch.
- the output of the shift control module in the driving unit except for the last stage shift register unit, the output of the shift control module in each of the touch driving units and the adjacent lower touch driving unit
- the start signal terminal of the shift control module is connected.
- the shift control module (SRU) 21 further includes a reset signal terminal RES for resetting the signal of the output terminal OUT1, thereby avoiding a multi-output phenomenon; of course, as shown in FIG.
- the reset signal terminal RES may be set only in the shift control module (SRU) 21 in the touch driving unit TXDU corresponding to the first row of pixels.
- the reset signal terminal RES can also be set in the shift control module (SRU) 21 in the touch driving unit TXDU corresponding to each subsequent row of pixels.
- the reset signal end of the shift control module in each touch driving unit is connected to the output end of the shift control module in the adjacent lower touch driving unit.
- the second shows a touch drive unit corresponding to the TX of the n-1th row, the nth row, and the n+1th row.
- the first-level touch driving unit ie, the touch driving unit corresponding to the TX of the first row
- the selection module 22 includes an AND gate circuit.
- an AND gate circuit is provided, and the AND circuit includes:
- the first transistor T1 the first electrode of the first transistor T1 is connected to the voltage terminal Vdd, the gate of the first transistor T1 inputs a touch time division control signal, the second electrode of the first transistor T1 and the gate of the fifth transistor T5 connection;
- the third transistor T3, the first pole of the third transistor T3 is connected to the second pole of the first transistor T1, the gate of the third transistor T3 is input with the touch time division control signal, and the second pole and the fourth transistor of the third transistor T3 a first pole of the transistor T4 is connected;
- the fourth transistor T4 the gate of the fourth transistor T4 is connected to the output terminal OUT1 of the shift control module 21, the second pole of the fourth transistor T4 is grounded, that is, connected to Vss;
- the second transistor T2 the first transistor of the second transistor T2 is connected to the voltage terminal Vdd, the gate of the second transistor T2 is connected to the gate of the fourth transistor T4, and the second electrode of the second transistor T2 is connected to the second transistor T3.
- the fifth transistor T5, the first electrode of the fifth transistor T5 is connected to the voltage terminal Vdd, the gate of the fifth transistor T5 is connected to the gate of the sixth transistor T6, and the second electrode of the fifth transistor T5 is connected to the output of the selection module 22.
- Terminal OUT2 is connected;
- the sixth transistor T6, the first pole of the sixth transistor T6 is connected to the second pole of the fifth transistor T5, and the second pole of the sixth transistor T6 is grounded, that is, connected to Vss.
- the first transistor T1, the second transistor T2, and the fifth transistor T5 belong to the same type of transistor; for example, the same type of P-type transistor; the third transistor T3, the fourth transistor T4, and the sixth transistor T6 belongs to the same type of transistor, for example, an N-type transistor.
- the buffer module 23 includes: a first inverter NG1 and a second inverter NG2, wherein:
- the input end of the first inverter NG1 is connected to the output terminal OUT2 of the selection module 22, the output end of the first inverter NG1 is connected to the input end of the second inverter NG2; the output end of the second inverter NG2 is The input terminal IN4 of the amplitude control module 24 is connected.
- the amplitude control module 24 includes:
- the first diode D1, the cathode of the first diode D1 is connected to the first level terminal V1, the anode of the first diode D1 is connected to the output terminal OUT3 of the buffer module 23; the second diode D2, the second The anode of the diode D2 is connected to the second level terminal V2, and the cathode of the second diode is connected to the output terminal OUT3 of the buffer module 23.
- the amplitude control module 24 includes a transmission gate circuit.
- the transmission gate circuit includes:
- the third inverter NG3 the input end of the third inverter NG3 is connected to the output terminal OUT3 of the buffer module 23, and the output end of the third inverter NG3 is connected to the gate of the seventh transistor T7;
- the first pole of the seventh transistor T7 is connected to the second level terminal V2, and the second pole of the seventh transistor T7 is connected to the output terminal OUT4 of the amplitude control module 24;
- the first pole of the eighth transistor T8 is connected to the second level terminal V2, the gate of the eighth transistor T8 is connected to the output terminal OUT3 of the buffer module 23, and the second pole of the eighth transistor T8 is connected to the output terminal of the amplitude control module 24. OUT4 connection;
- the gate of the ninth transistor T9 is connected to the output terminal of the third inverter NG3, the first pole of the ninth transistor T9 is connected to the first level terminal V1, and the second pole of the ninth transistor T9 is connected to the amplitude control module 24
- the output terminal OUT4 is connected;
- the first pole of the tenth transistor T10 is connected to the first level terminal V1
- the gate of the tenth transistor T10 is connected to the output terminal OUT3 of the buffer module 23
- the second pole of the tenth transistor T10 is connected to the output terminal of the amplitude control module 24. OUT4 connection.
- a shift control module 21 is used for controlling the start signal terminal STV and at least one clock signal terminal CLK.
- a shift register signal is generated at the output terminal OUT1;
- the selection module 22 is configured to output a high level signal VGH or a low level signal VGL according to the interaction of the touch time division control signal EXVCOM and the shift register signal generated by the shift control module 12;
- the buffer module 23 is configured to convert the level of the signal output by the selection module 22 to a level equal to the control signal of the input end of the signal amplitude control module 24;
- the amplitude control module 24 is configured to pull up or lower the amplitude of the signal output by the buffer module 23 to generate a touch time-division driving signal, and output a touch time-sharing driving signal to the touch transmitting electrode TX.
- the touch time-division driving signal is output to the TX (touch emitter electrode) layer or the common electrode of the display panel to meet the touch and display requirements when the TX (touch emitter electrode) layer is shared with the common electrode layer of the display panel.
- the first level terminal V1 is at a high level VCOMHI
- the second level terminal V2 is at a low level VCOMLOW.
- the duration of an STV signal includes a touch period t1 and a display period t2.
- the scan start signal STV is input to the first-level touch driving unit, referring to the circuit shown in FIG. If the n-1th line is in the first line, under the control of clockA, the shift control module (SRU(n-1)) 21 is at the end time of the t1 time period to the end time of the t2 time period node A (n- 1) Output shift register signal, wherein the shift register signal in FIG.
- the touch time-sharing control signal EXVCOM is a periodic signal, and in one cycle, the high-level t1 time period outputs a high level, t2 time The segment outputs a low level;
- the selection module (AND) 22 performs an AND operation on the touch time-sharing control signal EXVCOM and the shift register signal generated by the shift control module 21, and outputs the operation result to the amplitude control module through the cache module 23. 24.
- the high level signal or the low level signal generated by the AND operation result of the selection module (AND) 22 is boosted by the buffer module 23, and the amplitude control module 24 pulls the input signal to the high level of the first level end.
- the t1 time period amplitude control module 24 outputs the high level VCOMHI of the first level end to the touch transmitting electrode TX, so that the time period is realized.
- the low level VCOMLOW, the ground Vss, and the low level of the second level terminal may be the same zero potential or negative voltage, wherein the signal of the node A(n-1) is simultaneously used as the shift control corresponding to the next row.
- the STV input signal of the module (SRU(n)) 21 triggers the next line (nth line) to start working.
- the working principle is the same as that of the n-1th line.
- the node A of the nth line circuit is shown in FIG. The signal timing of (n) and TX(n) will not be described here.
- the touch driving unit and the circuit provided by the embodiment of the invention include a shift control module, a selection module, a buffer module and an amplitude control module, which can realize the touch output layer of the touch display layer of the touch display panel driven by the time division
- the VCOM common voltage of the driving signal and the common electrode layer is controlled, and since the touch driving circuit can be fabricated in the non-display area of the display panel, the touch driving circuit for customizing the TX as in the prior art is avoided. It is advantageous to realize the narrow frame of the display panel, and at the same time, since the touch driving circuit is manufactured in the manufacturing process of the display panel, it is beneficial to ensure the product yield, thereby realizing cost effective control.
- Embodiments of the present invention provide a display device including any of the above display circuits.
- the display circuit includes a pixel unit, a first gate driving unit, and a second gate driving unit.
- the display device can be a display device such as an electronic paper, a mobile phone, a television, a digital photo frame, or the like.
Abstract
Description
Claims (14)
- 一种触控驱动单元,包括:移位控制模块、选择模块、缓冲模块和幅值控制模块;所述移位控制模块包括起始信号端、输出端和至少一个时钟信号端;所述选择模块包括第一输入端、第二输入端和输出端;所述缓冲模块包括输入端和输出端;所述幅值控制模块包括输入端和输出端;其中,所述移位控制模块的输出端连接所述选择模块的第一输入端;所述选择模块的第二输入端输入触控分时控制信号,所述选择模块的输出端连接所述缓冲模块的输入端,所述缓冲模块的输出端连接所述幅值控制模块的输入端;所述幅值控制模块的输出端连接触控发射电极;其中,所述移位控制模块,用于在起始信号端和至少一个时钟信号端的控制下在输出端产生移位寄存信号;所述选择模块,用于根据所述触控分时控制信号和所述移位控制模块产生的移位寄存信号的共同作用输出高电平信号或者低电平信号;所述缓冲模块,用于将所述选择模块输出的信号的电平转换至与所述信号幅值控制模块的输入端的控制信号相等的电平;所述幅值控制模块,用于拉升或者降低所述缓冲模块输出的信号的幅值生成触控分时驱动信号,并向所述触控发射电极输出所述触控分时驱动信号。
- 根据权利要求1所述的触控驱动单元,其中,所述选择模块包括:与门电路。
- 根据权利要求2所述的触控驱动单元,其中,所述与门电路包括:第一晶体管,所述第一晶体管的第一极与电压端连接,所述第一晶体管的栅极输入所述触控分时控制信号,所述第一晶体管的第二极与第五晶体管的栅极连接;第三晶体管,所述第三晶体管的第一极与第一晶体管的第二极连接,所述第三晶体管的栅极输入所述触控分时控制信号,所述第三晶体管的第二极与第四晶体管的第一极连接;第四晶体管,所述第四晶体管的栅极与所述移位控制模块的输 出端连接,所述第四晶体管的第二极接地;第二晶体管,所述第二晶体管的第一极与电压端连接,所述第二晶体管的栅极与所述第四晶体管的栅极连接,所述第二晶体管的第二极与所述第三晶体管的第一极连接;第五晶体管,所述第五晶体管的第一极与电压端连接,所述第五晶体管的栅极与第六晶体管的栅极连接,所述第五晶体管的第二极与所述选择模块的输出端连接;第六晶体管,所述第六晶体管的第一极与所述第五晶体管的第二极连接,所述第六晶体管的第二极接地。
- 根据权利要求3所述的触控驱动单元,其中,所述第一晶体管、所述第二晶体管和所述第五晶体管属于同一类型的晶体管;所述第三晶体管、所述第四晶体管和所述第六晶体管属于同一类型的晶体管。
- 根据权利要求1所述的触控驱动单元,其中,所述移位控制模块包括移位寄存器。
- 根据权利要求1所述的触控驱动单元,其中,所述缓冲模块包括:第一反相器和第二反相器,其中:所述第一反相器的输入端与所述选择模块的输出端连接,所述第一反相器的输出端与所述第二反相器的输入端连接;所述第二反相器的输出端与所述幅值控制模块的输入端连接。
- 根据权利要求1所述的触控驱动单元,其中,所述幅值控制模块包括:第一电平端,所述第一电平端连接第一电平;第二电平端,所述第二电平端连接第二电平;第一二极管,所述第一二极管的阴极与所述第一电平端连接,所述第一二极管的阳极与所述缓冲模块的输出端连接;第二二极管,所述第二二极管的阳极与所述第二电平端连接,所述第二二极管的阴极与所述缓冲模块的输出端连接。
- 根据权利要求7所述的触控驱动单元,其中所述幅值控制模块根据所述第一电平拉升所述缓冲模块输出的信号的幅值并且根据所述第二电平降低所述缓冲模块输出的信号的幅值以生成触控分时驱动信号,并向所述触控发射电极输出所述触控分时驱动信号。
- 根据权利要求1所述的触控驱动单元,其中,所述幅值控制模块包括:传输门电路。
- 根据权利要求9所述的触控驱动单元,其中,所述幅值控制模块包括:第一电平端,所述第一电平端连接第一电平;第二电平端,所述第二电平端连接第二电平;所述传输门电路包括:第三反相器,所述第三反相器的输入端与所述缓冲模块的输出端连接,所述第三反相器的输出端与第七晶体管的栅极连接;所述第七晶体管的第一极与所述第二电平端连接,所述第七晶体管的第二极与所述幅值控制模块的输出端连接;第八晶体管的第一极与所述第二电平端连接,所述第八晶体管的栅极与所述缓冲模块的输出端连接,所述第八晶体管的第二极与所述幅值控制模块的输出端连接;第九晶体管的栅极与所述第三反相器的输出端连接,所述第九晶体管的第一极与所述第一电平端连接,所述第九晶体管的第二极与所述幅值控制模块的输出端连接;第十晶体管的第一极与所述第一电平端连接,第十晶体管的栅极与所述缓冲模块的输出端连接,所述第十晶体管的第二极与所述幅值控制模块的输出端连接。
- 根据权利要求10所述的触控驱动单元,其中所述幅值控制模块根据所述第一电平拉升所述缓冲模块输出的信号的幅值并且根据所述第二电平降低所述缓冲模块输出的信号的幅值以生成触控分时驱动信号,并向所述触控发射电极输出所述触控分时驱动信号。
- 一种触控驱动电路,包括多级如权利要求1~11任一所述的触控驱动单元;其中,除第一级触控驱动单元外,其余每个触控驱动单元的移位控制模块的起始信号端连接与其相邻的上一级触控驱动单元中的移位控制模块的输出端;除最后一级移位寄存器单元外,其余每个触控驱动单元中的移位控制模块的输出端与其相邻的下一级触控驱动单元的移位控制模块的起始信号端连接。
- 一种显示面板,包括设置在非显示区域的栅极驱动电路和 触控驱动电路,所述触控驱动电路为如权利要求12所述的触控驱动电路,其中:所述触控驱动电路设置在所述栅极驱动电路的外侧,且与所述栅极驱动电路采用相同的时钟信号驱动。
- 一种显示装置,包括如权利要求13所述的显示面板。
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CN105528984A (zh) | 2016-02-02 | 2016-04-27 | 京东方科技集团股份有限公司 | 发射电极扫描驱动单元、驱动电路以及驱动方法、阵列基板 |
CN106569650B (zh) * | 2016-11-02 | 2020-03-10 | 武汉华星光电技术有限公司 | 一种触摸面板及显示装置 |
KR20180078934A (ko) * | 2016-12-30 | 2018-07-10 | 엘지디스플레이 주식회사 | 연산 증폭기를 갖는 터치 전원 회로 및 그를 이용한 터치 디스플레이 장치 |
CN107633798B (zh) * | 2017-10-11 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | 电位转换电路及显示面板 |
CN108089769B (zh) * | 2018-01-26 | 2020-11-24 | 武汉华星光电技术有限公司 | 触控显示面板 |
CN111223459B (zh) | 2018-11-27 | 2022-03-08 | 元太科技工业股份有限公司 | 移位寄存器以及栅极驱动电路 |
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