A touch control circuit and a touch screen device

Abstract

The present invention discloses a touch control circuit and a touch screen device. The control circuit comprises a main control unit and a configuration unit. The main control unit comprises a counter U1, a multiplexer U2, a trigger U3, a touch controller U4, a trigger U5, a trigger U6, a trigger U7, an inverter U8, a field effect transistor Q1 and a field effect transistor Q2. Pin 9 of the counter U1 is connected to the MR pin, the TC pin is connected to the 1CLK of the trigger U3, the CP pin is connected to the DCLK of the touch controller U4, the 1CLK of the trigger U7 and the drain of the field effect transistor Q1. Pins X0 and X5 of the multiplexer U2 are connected to a power supply, the X7 pin is connected to the 1Q pin of the trigger U3, the X pin is connected to the source of the field effect transistor Q2, the C pin is connected to the 1Q pin of the trigger U5, the B pin is connected to the 1CLK pin of the trigger U5 and the 1Q pin of the trigger U6, and the A pin is connected to the 1CLK pin of the trigger U6 and the 1Q pin of the trigger U7.

Description

Technical Field

[0001] The present invention relates to the technical field of touch device control, and in particular to a touch control circuit and a touch screen device. Background Art

[0002] The resistive touch screen uses the voltage division principle to measure the coordinates of the upper and lower XY electrode layers. When a finger or a touch pen touches the screen, the electrode layers contact each other at a certain point due to pressure, and the voltage of the touch point is converted into coordinates and input into the processor. The processor customizes various applications according to the coordinates. The conversion process is to first apply voltage to the X electrode layer, and an electric field is formed between the positive and negative electrodes of the X electrode layer. When the upper and lower electrode layers touch, the current at the touch point is fed back through the Y to feed back the current contact voltage signal, and then the voltage is applied to the Y electrode. After detecting the current contact voltage signal fed back by the X electrode, the XY feedback signal is converted into coordinates and fed back to the processor. The existing control needs to be burned through the program, and the FLASH flash memory has limited capacity. Under the condition of satisfying the application, the space that can be occupied is limited. When necessary, it is necessary to reduce the application to ensure that the FLASH flash memory runs normally. In addition, the program control will erase the original data for the flash memory before writing, which has a greater impact on the speed. Summary of the invention

[0003] In view of the above technical problems, the object of the present invention is to provide a touch control circuit, the control circuit comprising a main control unit and a configuration unit, the main control unit comprising a counter U1, a multiplexer U2, a trigger U3, a touch controller U4, a trigger U5, a trigger U6, a trigger U7, an inverter U8, a field effect transistor Q1, and a field effect transistor Q2;

[0004] The 9th pin of the counter U1 is connected to the MR pin, the TC pin is connected to the 1CLK of the trigger U3, the CP pin is connected to the DCLK of the touch controller U4, the 1CLK of the trigger U7, and the drain of the field effect transistor Q1; the X0 and X5 pins of the multiplexer U2 are connected to the power supply, the X7 pin is connected to the 1Q pin of the trigger U3, the X pin is connected to the source of the field effect transistor Q2, the C pin is connected to the 1Q pin of the trigger U5, the B pin is connected to the 1CLK pin of the trigger U5 and the 1Q pin of the trigger U6, and the A pin is connected to the power supply. Connected to the 1CLK pin of trigger U6 and the 1Q pin of trigger U7; the 1D pins and the 1Q inverse pins of triggers U3, U5, U6 and U7 are connected; the CS inverse pin of touch controller U4 is connected to the output of inverter U8, and the DIN pin is connected to the drain of field effect transistor Q2; the input of inverter U8 is connected to the gate of field effect transistor Q1 and the gate of field effect transistor Q2; the source of field effect transistor Q1 is connected to the CLK clock signal; the X6 pin, X1 pin and X2 pin of multiplexer U2 are connected to the ground terminal;

[0005] Trigger U7, trigger U6, and trigger U5 are used to output three-bit control signals and feed them back to the A pin, B pin, and C pin of the multiplexer U2. The multiplexer U2 selects the X0 to X7 signals and inputs them to the X pin. Based on the circuit connection of trigger U7, trigger U6, and trigger U5, the output cycle order of the multiplexer U2 is X0 first, followed by X7 to X1. The X1, X2, Y1, and X2 pins of the touch controller U4 are connected to the four-wire resistive screen. The X7 pin of the multiplexer U2 is connected to the 1Q pin of the trigger U3, that is, the 5 pin. The 6 pin below the 5 pin is the 1Q inverted pin, hereinafter referred to as the 1Q pin and the 1Q inverted pin. The single-ended mode of the touch controller U4 is controlled by the Port pin. Among the two adjustable modes, the first is the high power consumption mode with high detection accuracy. The mode is the differential 12-bit resolution mode. Then the multiplexer U2 controls the touch controller U4 through the Port pin and the field The effect tube Q3 corresponds the pin level of X6 to X0 to 01 trigger U31, plus the level of the X7 pin of the multiplexer U2 corresponds to (X7) 010 resistor R2; the second is low power mode, the mode is single-ended 8-bit resolution mode corresponding to (X7) 0111001; according to the needs, the counter U1 is used to adjust the output state of the 1Q pin of the trigger U3 in eight clock cycles. The 1Q of the trigger U3 is fed back to the X7 pin of the multiplexer U2, and the V of the touch controller U4 The OUT pin is used to output the XY coordinate conversion signal, and the CS inverse pin is the chip select pin, which is started when the VIN input is low. The DCLK pin of the touch controller U4, the 1CLK pin of the trigger U7, and the CP pin of the counter U1 input the CLK clock signal through the field effect tube Q1. When VIN is input, it is also fed back to the field effect tube Q2, so that the multiplexer U2 selects the X0 pin to the X7 pin based on the A pin, the B pin, and the C pin. The corresponding X0 to X7 pins are input to the DIN pin of the touch controller U4 through the X pin and the field effect tube Q2 to complete the data input. The touch controller U4 converts the coordinates of the four-wire resistive screen connected to the X1 pin, the X2 pin, the Y1 pin, and the Y2 pin to complete the touch coordinate detection; the signal principle is that after the initial power-on, the VIN input is low, the field effect tube Q2 and the field effect tube Q1 are turned on, and the CLK clock signal is respectively input to the third pin of the trigger U7, the inverter U8, and the fourteenth pin of the counter U1 through the source of the field effect tube Q1;When the initial low level of the clock signal of CLK is fed back to the inverter U8, the inverter U8 outputs a signal to the sixteenth pin of the touch controller U4, and the X pin of the multiplexer U2 inputs the X0 pin signal to the tenth pin of the touch controller U4 through the field effect transistor Q2 to complete the first bit input, and the touch controller U4 is started. Then, when the clock signal of CLK is high, the inverter U8 is turned off, and the CLK signal is input to the third pin of the trigger U7. The fifth pin of the trigger U7 outputs a feedback signal to the third pin of the trigger U6. The fifth pin of the trigger U6 outputs feedback to the third pin of the trigger U5. The fifth pin of the trigger U5 outputs, and the multiplexer U2 corresponds the X pin output to the X7 pin. At the same time, the third pin of the counter U1 jumps to the second pin output. After CLK is low, the inverter U8 outputs again, and the multiplexer U2 feeds back the X7 pin signal to the fourteenth pin of the touch controller U4 through the above process to complete the second bit output. With the CLK input, the multiplexer U2 connects the X6 pin to the X1 pin signal. Corresponding to the touch controller U4, when the eighth pin of the counter U1 outputs, the signal is fed back to the fifteenth pin of the counter U1, and the counter U1 is reset. During the process, when the counter U1 outputs at the fifth pin, the twelfth pin jumps, and after the fifteenth pin of the counter U1 is input, the twelfth pin jumps again, and the signal is fed back to the third pin of the trigger U3. The fifth and sixth pins of the trigger U3 flip. Before the last set of eight-bit data is input to the touch controller U4, the second pin of the touch controller U4 outputs the touch screen voltage signal through the touch screen electrode and the X2 pin loop, and converts the current voltage of the Y2 pin. When the second set of eight-bit data signal is input to the touch controller U4, due to the flip of the fifth pin of the trigger U3, the X7 signal is opposite to the level when the last set of eight-bit data is input, and the Y1 pin of the touch controller U4 inputs the touch screen voltage signal through the touch screen electrode and the Y2 pin loop, and converts the current voltage of the X2 pin. The coordinate signal is fed back to the processor through the touch controller U4 output to the twelfth pin, and the processor is not shown in the attached figure. ;

[0006] Further, the configuration unit includes a resistor R1, a resistor R2, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, and a resistor R11;

[0007] One end of the resistor R1 is connected to the X7 pin of the multiplexer U2; one end of the resistor R2 is connected to the TC pin of the counter U1; one end of the resistor R4 is connected to the MR pin of the counter U1; one end of the resistor R5 is connected to the 1P pin of the counter U1; one end of the resistor R6 is connected to the 1Q pin of the trigger U6; one end of the resistor R7 is connected to the 1CLK pin of the trigger U5; one end of the resistor R8 is connected to the CS inverse pin of the touch controller U4; one end of the resistor R9 is connected to the 1Q pin of the trigger U7; one end of the resistor R10 is connected to the DIN pin of the touch controller U4; one end of the resistor R11 is connected to the PENIRQ inverse pin of the touch controller U4; the other end of the resistor R1, the other end of the resistor R2, and the resistor R4 are connected to the DIN pin of the touch controller U4. The other end, the other end of resistor R5, the other end of resistor R6, the other end of resistor R7, the other end of resistor R8, the other end of resistor R9, the other end of resistor R10, and the other end of resistor R11 are connected to the ground end; resistor R9, resistor R6, and resistor R7 correspond to the fifth pins of trigger U7, trigger U6, and trigger U5 respectively, resistor R2 corresponds to the third pin of trigger U3, resistor R1 corresponds to the fourth pin of multiplexer U2, resistor R4 corresponds to the fifteenth pin of counter U1, resistor R8, resistor R10, and resistor R11 correspond to the fifteenth pin, fourteenth pin, and eleventh pin of touch controller U4, all of which are used for pull-down when there is no external input. When there is an external connection, the pull-down resistor is enabled when there is no input.

[0008] Furthermore, the main control unit also includes a field effect transistor Q3; the gate of the field effect transistor Q3 is connected to the Port end, the source is connected to the power supply, and the drain is connected to the X4 pin and X3 pin of the trigger U3. The field effect transistor Q3 is used to control the two modes of the multiplexer U2 for selection. In addition to being controlled by one MOS tube, X3 and X4 of the multiplexer U2 can also be controlled by two MOS tubes, adding a differential 8-bit resolution mode and a single-ended 12-bit resolution mode.

[0009] Furthermore, the configuration unit also includes a resistor R3 and a Zener diode D1, one end of the resistor R3 is connected to the power supply, and the other end is connected to the VBAT pin of the touch controller U4 and the cathode of the Zener diode D1; the anode of the Zener diode D1 is connected to the ground terminal, and the resistor R3 and the Zener diode D1 are used for backup power supply of the seventh pin of the touch controller U4.

[0010] Furthermore, the models of the several triggers are 74H74CD.

[0011] Furthermore, the touch controller model is TSC2046EIPW.

[0012] Furthermore, the counter model is CD74HC4017E.

[0013] Furthermore, the multiplexer model is CD74HC4017E.

[0014] Furthermore, a touch screen device includes the above control circuit.

[0015] The beneficial effects of the present invention compared with the prior art are:

[0016] The present invention can reduce the occupation of FLASH flash memory, increase the operating speed of the touch screen, and provide two control modes by controlling eight-bit data reading and writing through hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the prior art and the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The present invention provides an overall structural diagram.

[0019] Figure 2 This is a schematic diagram of the control circuit structure provided by the present invention. DETAILED DESCRIPTION

[0020] In order to make the objects and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0021] The present invention discloses a touch control circuit, the control circuit includes a main control unit and a configuration unit, the main control unit includes a counter U1, a multiplexer U2, a trigger U3, a touch controller U4, a trigger U5, a trigger U6, a trigger U7, an inverter U8, a field effect tube Q1, and a field effect tube Q2;

[0022] The 9th pin of the counter U1 is connected to the MR pin, the TC pin is connected to the 1CLK of the trigger U3, the CP pin is connected to the DCLK of the touch controller U4, the 1CLK of the trigger U7, and the drain of the field effect transistor Q1; the X0 and X5 pins of the multiplexer U2 are connected to the power supply, the X7 pin is connected to the 1Q pin of the trigger U3, the X pin is connected to the source of the field effect transistor Q2, the C pin is connected to the 1Q pin of the trigger U5, the B pin is connected to the 1CLK pin of the trigger U5 and the 1Q pin of the trigger U6, and the A pin is connected to the power supply. Connected to the 1CLK pin of trigger U6 and the 1Q pin of trigger U7; the 1D pin and 1Q inverse pin of trigger U3, trigger U5, trigger U6 and trigger U7 are connected; the CS inverse pin of touch controller U4 is connected to the output end of inverter U8, and the DIN pin is connected to the drain of field effect transistor Q2; the input end of inverter U8 is connected to the gate of field effect transistor Q1 and the gate of field effect transistor Q2; the source of field effect transistor Q1 is connected to the CLK clock signal; the X6 pin, X1 pin, X2 pin of multiplexer U2 are connected to the ground.

[0023] Specifically, the configuration unit includes a resistor R1, a resistor R2, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, and a resistor R11;

[0024] One end of the resistor R1 is connected to the X7 pin of the multiplexer U2; one end of the resistor R2 is connected to the TC pin of the counter U1; one end of the resistor R4 is connected to the MR pin of the counter U1; one end of the resistor R5 is connected to the 1P pin of the counter U1; one end of the resistor R6 is connected to the 1Q pin of the trigger U6; one end of the resistor R7 is connected to the 1CLK pin of the trigger U5; one end of the resistor R8 is connected to the CS inverse pin of the touch controller U4; one end of the resistor R9 is connected to the 1Q pin of the trigger U7; one end of the resistor R10 is connected to the DIN pin of the touch controller U4; one end of the resistor R11 is connected to the PENIRQ inverse pin of the touch controller U4; the other end of the resistor R1, the other end of the resistor R2, the other end of the resistor R4, the other end of the resistor R5, the other end of the resistor R6, the other end of the resistor R7, the other end of the resistor R8, the other end of the resistor R9, the other end of the resistor R10, and the other end of the resistor R11 are connected to the ground.

[0025] Specifically, the main control unit also includes a field effect transistor Q3;

[0026] The gate of the field effect tube Q3 is connected to the Port terminal, the source is connected to the power supply, and the drain is connected to the X4 pin and the X3 pin of the trigger U3.

[0027] Specifically, the configuration unit further includes a resistor R3 and a voltage stabilizing diode D1;

[0028] One end of the resistor R3 is connected to the power supply, and the other end is connected to the VBAT pin of the touch controller U4 and the cathode of the voltage regulator diode D1; the anode of the voltage regulator diode D1 is connected to the ground terminal.

[0029] Specifically, the models of the several triggers are 74H74CD.

[0030] Specifically, the touch controller model is TSC2046EIPW.

[0031] Specifically, the counter model is CD74HC4017E.

[0032] Specifically, the multiplexer model is CD74HC4017E.

[0033] Specifically, a touch screen device comprises the touch control circuit as described in any one of claims 1 to 8 above.

[0034] See also Figure 1 , Figure 2In the present invention, trigger U7, trigger U6, and trigger U5 are used to output a three-bit control signal and feed it back to the A pin, B pin, and C pin of the multiplexer U2. The multiplexer U2 selects the X0 to X7 signals and inputs them to the X pin. Based on the circuit connection of trigger U7, trigger U6, and trigger U5, the output cycle order of the multiplexer U2 is X0 first, followed by X7 to X1. The X1, X2, Y1, and X2 pins of the touch controller U4 are connected to the four-wire resistive screen. The X7 pin of the multiplexer U2 is connected to the 1Q pin of the trigger U3, that is, the 5 pin. The 6 pin below the 5 pin is the 1Q inverted pin, hereinafter referred to as the 1Q pin and the 1Q inverted pin. The single-ended mode of the touch controller U4 is controlled by the Port pin. Among the two adjustable modes, the first one is the high power consumption mode with high detection accuracy. The mode is the differential 12-bit resolution mode. Then the multiplexer U2 controls the touch controller U4 through the Port pin and the field The effect tube Q3 corresponds the pin level of X6 to X0 to 01 trigger U31, plus the level of the X7 pin of the multiplexer U2 corresponds to (X7) 010 resistor R2; the second is low power mode, the mode is single-ended 8-bit resolution mode corresponding to (X7) 0111001; according to the needs, the counter U1 is used to adjust the output state of the 1Q pin of the trigger U3 in eight clock cycles. The 1Q of the trigger U3 is fed back to the X7 pin of the multiplexer U2, and the V of the touch controller U4 The OUT pin is used to output the XY coordinate conversion signal, and the CS inverse pin is the chip select pin, which is started when the VIN input is low. The DCLK pin of the touch controller U4, the 1CLK pin of the trigger U7, and the CP pin of the counter U1 input the CLK clock signal through the field effect tube Q1. When VIN is input, it is also fed back to the field effect tube Q2, so that the multiplexer U2 selects the X0 pin to the X7 pin based on the A pin, the B pin, and the C pin. The corresponding X0 to X7 pins are input to the DIN pin of the touch controller U4 through the X pin and the field effect tube Q2 to complete the data input. The touch controller U4 converts the coordinates of the four-wire resistive screen connected to the X1 pin, the X2 pin, the Y1 pin, and the Y2 pin to complete the touch coordinate detection; the signal principle is that after the initial power-on, the VIN input is low, the field effect tube Q2 and the field effect tube Q1 are turned on, and the CLK clock signal is respectively input to the third pin of the trigger U7, the inverter U8, and the fourteenth pin of the counter U1 through the source of the field effect tube Q1;When the clock signal of CLK is initially low and fed back to the inverter U8, the inverter U8 outputs a signal to the sixteenth pin of the touch controller U4. The X pin of the multiplexer U2 inputs the X0 pin signal to the tenth pin of the touch controller U4 through the field effect transistor Q2, completing the first bit input, and the touch controller U4 starts. Then, when the clock signal of CLK is high, the inverter U8 is turned off, and the CLK signal is input to the third pin of the trigger U7. The fifth pin of the trigger U7 outputs a feedback signal to the third pin of the trigger U6. The fifth pin of the trigger U6 outputs a feedback signal to the third pin of the trigger U5. The fifth pin of the trigger U5 outputs a signal, and the multiplexer U2 corresponds the X pin output to the X7 pin, and at the same time, the third pin of the counter U1 jumps to the second pin output. After CLK is low, the inverter U8 outputs again. The multiplexer U2 feeds back the X7 pin signal to the fourteenth pin of the touch controller U4 through the above process to complete the second bit output. With the CLK input, the multiplexer U2 corresponds the X6 pin to the X1 pin signal to the touch controller U4. After the output of the eighth pin of the counter U1, the signal is fed back to the fifteenth pin of the counter U1, and the counter U1 is reset. During the process, when the counter U1 outputs at the fifth pin, the twelfth pin jumps. After the fifteenth pin of the counter U1 is input, The twelfth pin jumps again, and the signal is fed back to the third pin of the trigger U3. The fifth and sixth pin signals of the trigger U3 are flipped. Before the last set of eight-bit data is input to the touch controller U4, the second pin of the touch controller U4 outputs the touch screen voltage signal, which is converted to the current voltage of the Y2 pin through the touch screen electrode and the X2 pin loop. When the second set of eight-bit data signal is input to the touch controller U4, the fifth pin of the trigger U3 is flipped, and the X7 signal has the opposite level to the previous set of eight-bit data input. The Y1 pin of the touch controller U4 inputs the touch screen voltage signal through the touch screen electrode and the Y2 pin loop, and converts the current voltage of the X2 pin. , the coordinate signal is fed back to the processor through the output of the touch controller U4 to the twelfth pin, which is not shown in the attached figure of the processor. The resistors R9, R6 and R7 in the configuration circuit correspond to the fifth pins of the trigger U7, U6 and U5 respectively, the resistor R2 corresponds to the third pin of the trigger U3, the resistor R1 corresponds to the fourth pin of the multiplexer U2, the resistor R4 corresponds to the fifteenth pin of the counter U1, the resistors R8, R10 and R11 correspond to the fifteenth, fourteenth and eleventh pins of the touch controller U4, and are all used for pull-down when there is no external input. When there is an external connection, the pull-down resistor is enabled when there is no input. The resistor R3 and the voltage-stabilizing diode D1 are used for the backup power supply of the seventh pin of the touch controller U4, and the field effect transistor Q3 is used to control the selection of two modes of the multiplexer U2. In addition, it should be noted that in addition to being controlled by one MOS tube, X3 and X4 of the multiplexer U2 can also be controlled by two MOS tubes, adding a differential 8-bit resolution mode and a single-ended 12-bit resolution mode. ;

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the equivalent elements of the claims be included in the invention. Any marking in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A touch control circuit, characterized in that: The control circuit includes a main control unit and a configuration unit, wherein the main control unit includes a counter U1, a multiplexer U2, a trigger U3, a touch controller U4, a trigger U5, a trigger U6, a trigger U7, an inverter U8, a field effect transistor Q1, and a field effect transistor Q2; the 9 pin of the counter U1 is connected to the MR pin, the TC pin is connected to the 1CLK of the trigger U3, the CP pin is connected to the DCLK of the touch controller U4, the 1CLK of the trigger U7, and the drain of the field effect transistor Q1; the X0 and X5 pins of the multiplexer U2 are connected to the power supply, the X7 pin is connected to the 1Q pin of the trigger U3, the X pin is connected to the source of the field effect transistor Q2, the C pin is connected to the 1Q pin of the trigger U5 The B pin is connected to the 1CLK pin of trigger U5 and the 1Q pin of trigger U6, and the A pin is connected to the 1CLK pin of trigger U6 and the 1Q pin of trigger U7; the 1D pin and the 1Q inverse pin of trigger U3, trigger U5, trigger U6, and trigger U7 are connected; the CS inverse pin of touch controller U4 is connected to the output end of inverter U8, and the DIN pin is connected to the drain of field effect transistor Q2; the input end of inverter U8 is connected to the gate of field effect transistor Q1 and the gate of field effect transistor Q2; the source of field effect transistor Q1 is connected to the CLK clock signal; the X6 pin, X1 pin, and X2 pin of multiplexer U2 are connected to the ground end, and the configuration unit is used to pull down when there is no external input.

2. The touch control circuit according to claim 1, characterized in that: The configuration unit includes a resistor R1, a resistor R2, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, and a resistor R11; one end of the resistor R1 is connected to the X7 pin of the multiplexer U2; one end of the resistor R2 is connected to the TC pin of the counter U1; one end of the resistor R4 is connected to the MR pin of the counter U1; one end of the resistor R5 is connected to the 1P pin of the counter U1; one end of the resistor R6 is connected to the 1Q pin of the trigger U6; one end of the resistor R7 is connected to the 1CLK pin of the trigger U5; One end of resistor R8 is connected to the CS inverse pin of touch controller U4; one end of resistor R9 is connected to the 1Q pin of trigger U7; one end of resistor R10 is connected to the DIN pin of touch controller U4; one end of resistor R11 is connected to the PENIRQ inverse pin of touch controller U4; the other end of resistor R1, the other end of resistor R2, the other end of resistor R4, the other end of resistor R5, the other end of resistor R6, the other end of resistor R7, the other end of resistor R8, the other end of resistor R9, the other end of resistor R10, and the other end of resistor R11 are connected to the ground.

3. The touch control circuit according to claim 1, characterized in that: The main control unit further includes a field effect transistor Q3; the gate of the field effect transistor Q3 is connected to the Port end, the source is connected to the power supply, and the drain is connected to the X4 pin and the X3 pin of the trigger U3.

4. The touch control circuit according to claim 1, characterized in that: The configuration unit further includes a resistor R3 and a voltage regulator diode D1; one end of the resistor R3 is connected to the power supply, and the other end is connected to the VBAT pin of the touch controller U4 and the cathode of the voltage regulator diode D1; the anode of the voltage regulator diode D1 is connected to the ground.

5. The touch control circuit according to claim 1, characterized in that: The models of the several triggers are 74H74CD.

6. The touch control circuit according to claim 1, characterized in that: The touch controller model is TSC2046EIPW.

7. The touch control circuit according to claim 1, characterized in that: The counter model is CD74HC4017E.

8. The touch control circuit according to claim 1, characterized in that: The multiplexer model is CD74HC4017E.

9. A touch screen device, characterized in that: The touch control circuit comprises the touch control circuit as described in any one of claims 1 to 8.

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