Ink screen terminal control circuit capable of preventing electrostatic influence

Abstract

The invention provides an ink screen terminal control circuit capable of preventing electrostatic influence, which comprises a voltage regulation circuit, an ink screen master control circuit, an ink screen slave control circuit, an ink screen power supply circuit and an ink screen, the output end of the voltage adjusting circuit is in power supply connection with the ink screen master control circuit, the ink screen slave control circuit and the ink screen power supply circuit, the output end of the ink screen master control circuit is connected with the input end of the ink screen slave control circuit, and the output end of the ink screen slave control circuit is connected with the input end of the ink screen power supply circuit and the input end of the ink screen. The ink screen power supply circuit is in power supply connection with the ink screen, the input end of the ink screen master control circuit is further connected with a control key, and the ink screen master control circuit, the ink screen slave control circuit and the voltage adjusting circuit are each provided with a plurality of bidirectional voltage stabilizing diodes. The ink screen terminal has the beneficial effect that the electrostatic influence prevention capability of the ink screen terminal in different environments is improved.

Description

Technical Field

[0001] The present invention relates to the field of circuit technology, and in particular to an ink screen terminal control circuit capable of preventing static electricity influence. Background Art

[0002] Ink screen is also known as electronic paper display technology. Like most traditional inks, electronic ink and the circuits that change its color can be printed on many surfaces, from curved plastics, polyester films, paper to cloth. The difference from traditional paper is that electronic ink changes color when powered on and can display changing images, like the display of a calculator or mobile phone.

[0003] The ink screen is a display screen that uses electronic ink technology. It is different from traditional LCD screens and LED screens in terms of display effect and eye protection characteristics. The display principle of the ink screen is based on the directional aggregation and color change of electronic ink. The ink screen is composed of a series of tiny microcapsules, each of which is filled with fine color particles and charged color dyes. These microcapsules are suspended in a transparent liquid to form a thin film layer. When a voltage is applied to the ink screen, the color dye in the liquid will be attracted by the charged particles, causing the color dye to aggregate in a directional manner inside the microcapsule to form a visible image.

[0004] However, since the main display principle of the ink screen is to use the circuit to drive the movement of charged ink particles to display patterns and text, external static electricity has a great impact on the display of the ink screen and the stability of the ink screen circuit. There is even the possibility of static electricity burning the ink screen circuit, which brings a very bad user experience to users of the ink screen. Summary of the invention

[0005] In order to solve the problems in the prior art, the present invention provides an ink screen terminal control circuit that can prevent the influence of static electricity. By arranging a voltage adjustment circuit, an ink screen main control circuit, an ink screen slave control circuit, an ink screen power supply circuit and an ink screen that cooperate with each other in the ink screen terminal control circuit that can prevent the influence of static electricity, the ink screen main control circuit and the ink screen slave control circuit are both provided with multiple bidirectional voltage regulator diodes, and the voltage adjustment circuit is provided with bidirectional voltage regulator diodes, bootstrap boost capacitors and common-mode inductors. The multiple bidirectional voltage regulator diodes can protect the ink screen main control circuit and the ink screen slave control circuit from static electricity impacts, and the bidirectional voltage regulator diodes, bootstrap boost capacitors and common-mode inductors can protect the voltage adjustment circuit from static electricity impacts, thereby improving the ability of the ink screen terminal to prevent the influence of static electricity in different environments, and solving the problem in the prior art that the ink screen is easily affected by static electricity and even static electricity may burn the ink screen circuit.

[0006] The present invention provides an ink screen terminal control circuit capable of preventing the influence of static electricity, comprising a voltage adjustment circuit, an ink screen main control circuit, an ink screen slave control circuit, an ink screen power supply circuit and an ink screen, wherein the input end of the voltage adjustment circuit is connected to a power supply, the output end of the voltage adjustment circuit is connected to the ink screen main control circuit, the ink screen slave control circuit and the ink screen power supply circuit for power supply, the output end of the ink screen main control circuit is connected to the input end of the ink screen slave control circuit, the output end of the ink screen slave control circuit is connected to the input end of the ink screen power supply circuit and the input end of the ink screen, the output end of the ink screen power supply circuit is connected to the ink screen power supply, and the The input end of the ink screen main control circuit is also connected to control buttons, which include a menu button, a setting button, a right button, a left button, a selection button and a return button. The input end of the ink screen main control circuit can also be connected to an SD memory card. The ink screen main control circuit and the ink screen slave control circuit are both provided with multiple bidirectional voltage regulator diodes. The voltage adjustment circuit is provided with bidirectional voltage regulator diodes, bootstrap boost capacitors and common-mode inductors. The multiple bidirectional voltage regulator diodes can protect the ink screen main control circuit and the ink screen slave control circuit from static electricity. The bidirectional voltage regulator diodes, the bootstrap boost capacitors and the common-mode inductors can protect the voltage adjustment circuit from static electricity.

[0007] The present invention is further improved, the ink screen main control circuit is provided with a main control chip U1, a USB interface J100, a resistor R101, a resistor R102, a bidirectional voltage regulator diode D9, a bidirectional voltage regulator diode D10, a bidirectional voltage regulator diode D11 and an SD memory card interface J1, wherein the main control chip U1 is provided with 57 pins, the USB interface J100 is provided with 5 pins, the output end of the SD memory card interface J1 is provided with 9 pins, the input end of the SD memory card interface J1 can be connected to the SD memory card, the 4th pin of the SD memory card interface J1, the 43rd, 44th, and 48th pins of the main control chip U1 are connected to the output end of the voltage adjustment circuit, the 15th, 16th, 17th, and 18th pins of the main control chip U1 are connected to the input end of the ink screen slave control circuit, and the 4th, 5th, 6th, and 7th pins of the main control chip U1 are respectively The main control chip U1 is connected to the 5th, 3rd, 7th and 2nd pins of the SD memory card interface J1 respectively, the 46th pin of the main control chip U1 is connected to one end of the resistor R101, the other end of the resistor R101 is connected to the 2nd pin of the USB interface J100 and one end of the bidirectional voltage regulator diode D10, the 47th pin of the main control chip U1 is connected to one end of the resistor R102, the other end of the resistor R102 is connected to the 3rd pin of the USB interface J100 and one end of the bidirectional voltage regulator diode D11, the 1st pin of the USB interface J100 is connected to one end of the bidirectional voltage regulator diode D9 and the output end of the voltage adjustment circuit, the 4th pin of the USB interface J100, the other end of the bidirectional voltage regulator diode D9, the other end of the bidirectional voltage regulator diode D10 and the other end of the bidirectional voltage regulator diode D11 are grounded.

[0008] The present invention is further improved, the ink screen main control circuit is further provided with a UART interface J101, a bidirectional voltage regulator diode D24, a bidirectional voltage regulator diode D25, a bidirectional voltage regulator diode D26, a bidirectional voltage regulator diode D27, a bidirectional voltage regulator diode D28 and a FLASH storage chip U2, the UART interface J101 is provided with 6 pins, the FLASH storage chip U2 is provided with 8 pins, the 1st, 2nd, 3rd, 5th, 6th, 7th pins of the FLASH storage chip U2 are respectively connected to the 56th, 55th, 54th, 53rd, 52nd, 51st pins of the main control chip U1, the 1st pin of the UART interface J101 is ... The UART interface J101 is connected to one end of the bidirectional voltage regulator diode D28 and the output end of the voltage regulating circuit, the second pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D27 and pin 2 of the main control chip U1, the third pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D26 and pin 3 of the main control chip U1, the fourth pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D25 and pin 24 of the main control chip U1, and the sixth pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D24 and pin 25 of the main control chip U1.

[0009] The present invention is further improved, the ink screen main control circuit is further provided with a menu button trigger switch MENU, a resistor R7, a bidirectional voltage regulator diode D1, a setting button trigger switch SET, a resistor R8, a bidirectional voltage regulator diode D2, a left button trigger switch L, a resistor R9, a bidirectional voltage regulator diode D3, a right button trigger switch R, a resistor R10, a bidirectional voltage regulator diode D4, a selection button trigger switch OK, a resistor R11, a bidirectional voltage regulator diode D5, a return button trigger switch EXIT, a resistor R12 and a bidirectional voltage regulator diode D6, one end of the menu button trigger switch MENU is connected to the output end of the voltage adjustment circuit, and the menu button trigger switch The other end of MENU is connected to one end of the resistor R7 and one end of the bidirectional voltage regulator diode D1, the other end of the resistor R7 is connected to pin 8 of the main control chip U1, one end of the setting button trigger switch SET is connected to the output end of the voltage adjustment circuit, the other end of the setting button trigger switch SET is connected to one end of the resistor R8 and one end of the bidirectional voltage regulator diode D2, the other end of the resistor R8 is connected to pin 9 of the main control chip U1, one end of the left button trigger switch L is connected to the output end of the voltage adjustment circuit, the other end of the left button trigger switch L is connected to one end of the resistor R9 and one end of the bidirectional voltage regulator diode D2 One end of the diode D3 is connected, the other end of the resistor R9 is connected to the 11th pin of the main control chip U1, one end of the right key trigger switch R is connected to the output end of the voltage adjustment circuit, the other end of the right key trigger switch R is connected to one end of the resistor R10 and one end of the bidirectional voltage regulator diode D4, the other end of the resistor R10 is connected to the 12th pin of the main control chip U1, one end of the selection key trigger switch OK is connected to the output end of the voltage adjustment circuit, the other end of the selection key trigger switch OK is connected to one end of the resistor R11 and one end of the bidirectional voltage regulator diode D5, and the other end of the resistor R11 It is connected to pin 13 of the main control chip U1, one end of the return button trigger switch EXIT is connected to the output end of the voltage adjustment circuit, the other end of the return button trigger switch EXIT is connected to one end of the resistor R12 and one end of the bidirectional voltage regulator diode D6, the other end of the resistor R12 is connected to pin 14 of the main control chip U1, the other end of the bidirectional voltage regulator diode D1, the other end of the bidirectional voltage regulator diode D2, the other end of the bidirectional voltage regulator diode D3, the other end of the bidirectional voltage regulator diode D4, the other end of the bidirectional voltage regulator diode D5, and the other end of the bidirectional voltage regulator diode D6 are grounded.

[0010] The present invention is further improved. The ink screen slave control circuit is provided with a slave control chip U3, a USB interface J300, a resistor R301, a resistor R302, a bidirectional voltage regulator diode D13, a bidirectional voltage regulator diode D14 and a bidirectional voltage regulator diode D15, wherein the slave control chip U3 is provided with 57 pins, the USB interface J300 is provided with 5 pins, the 43rd, 44th and 48th pins of the slave control chip U3 are connected to the output end of the voltage adjustment circuit, the 27th, 28th, 29th and 30th pins of the slave control chip U3 are respectively connected to the 18th, 16th, 17th and 15th pins of the main control chip U1, the 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th and 18th pins of the slave control chip U3 are connected to the input end of the ink screen, and the 31st, 32nd, 34th and 35th pins of the slave control chip U3 are connected to the input end of the ink screen. , 36, 38, and 40 pins are connected to the input end of the ink screen power supply circuit, the 46th pin of the slave control chip U3 is connected to one end of the resistor R301, the other end of the resistor R301 is connected to the 2nd pin of the USB interface J300 and one end of the bidirectional voltage regulator diode D14, the 47th pin of the slave control chip U3 is connected to one end of the resistor R302, the other end of the resistor R302 is connected to the 3rd pin of the USB interface J300 and one end of the bidirectional voltage regulator diode D15, the 1st pin of the USB interface J300 is connected to one end of the bidirectional voltage regulator diode D13 and the output end of the voltage adjustment circuit, the 4th pin of the USB interface J300, the other end of the bidirectional voltage regulator diode D13, the other end of the bidirectional voltage regulator diode D14, and the other end of the bidirectional voltage regulator diode D15 are grounded.

[0011] The present invention is further improved, the ink screen slave control circuit is also provided with a UART interface J31, a bidirectional voltage regulator diode D18, a bidirectional voltage regulator diode D19, a bidirectional voltage regulator diode D21, a bidirectional voltage regulator diode D22, a bidirectional voltage regulator diode D23 and a FLASH storage chip U4, the UART interface J31 is provided with 6 pins, the FLASH storage chip U4 is provided with 8 pins, the 1st, 2nd, 3rd, 5th, 6th, 7th pins of the FLASH storage chip U4 are respectively connected to the 56th, 55th, 54th, 53rd, 52nd, 51st pins of the slave control chip U3, the 1st pin of the UART interface J31 is ... The UART interface J31 is connected to one end of the bidirectional voltage regulator diode D18 and the output end of the voltage regulating circuit, the second pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D19 and the 2nd pin of the slave control chip U3, the 3rd pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D21 and the 3rd pin of the slave control chip U3, the 4th pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D22 and the 24th pin of the slave control chip U3, and the 6th pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D23 and the 25th pin of the slave control chip U3.

[0012] The present invention is further improved, the voltage regulating circuit is provided with a voltage stabilizing chip U5, a fuse resistor F1, an inductor FB9, a resistor R150, a common mode inductor T1, a bidirectional voltage stabilizing diode D29, a bootstrap capacitor C51, an inductor FB10, a common mode inductor T2 and a bidirectional voltage stabilizing diode D30, wherein the voltage stabilizing chip U5 is provided with 6 pins, the 6th pin of the voltage stabilizing chip U5 is connected to one end of the inductor FB9, the other end of the inductor FB9 is connected to one end of the resistor R150 and one end of the bidirectional voltage stabilizing diode D29, the other end of the resistor R150 is connected to one end of the fuse resistor F1, the other end of the fuse resistor F1 is connected to the output end of the common mode inductor T1, and the input end of the common mode inductor T1 is connected to the supply The power supply is connected to the power supply circuit, the 4th pin of the voltage regulator chip U5 is connected to the 34th pin of the main control chip U1 and one end of the bootstrap capacitor C51, the 5th pin of the voltage regulator chip U5 is connected to one end of the inductor FB10, the other end of the inductor FB10 is connected to the input end of the common-mode inductor T2, the output end of the common-mode inductor T2 is connected to one end of the bidirectional voltage regulator diode D30, the ink screen power supply circuit, the 43rd, 44th, and 48th pins of the main control chip U1, and the 43rd, 44th, and 48th pins of the slave control chip U3, the 2nd pin of the voltage regulator chip U5, the other end of the bidirectional voltage regulator diode D29, the other end of the bidirectional voltage regulator diode D30, and the other end of the bootstrap capacitor C51 are grounded.

[0013] The present invention is further improved, the ink screen power supply circuit is provided with a power supply management chip U6, a diode D602, a diode D603, a diode D604 and a diode D605, wherein the power supply management chip U6 is provided with 48 pins, the 24th and 45th pins of the power supply management chip U6 are connected to the output end of the common mode inductor T2, the 12th, 18th, 17th, 21st, 5th, 23rd and 2nd pins of the power supply management chip U6 are respectively connected to the 34th, 31st, 32nd, 38th, 40th, 36th and 35th pins of the slave control chip U3, the power supply The 34th pin of the management chip U6 is connected to the positive electrode of the diode D602, the negative electrode of the diode D602 is connected to the positive electrode of the diode D603, the negative electrode of the diode D603 is connected to the power supply of the ink screen, the 30th pin of the power supply management chip U6 is connected to the negative electrode of the diode D604, the positive electrode of the diode D604 is connected to the negative electrode of the diode D605, the positive electrode of the diode D605 is connected to the power supply of the ink screen, and the 44th, 15th, and 3rd pins of the power supply management chip U6 are connected to the power supply of the ink screen.

[0014] The present invention is further improved in that the model of the master control chip U1 is RP2040, and the model of the slave control chip U3 is RP2040.

[0015] The present invention is further improved, the model of the voltage stabilizing chip U5 is SY7072A, and the model of the power supply management chip U6 is TPS65185RGZR.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: an ink screen terminal control circuit capable of preventing the influence of static electricity is provided, and a voltage adjustment circuit, an ink screen main control circuit, an ink screen slave control circuit, an ink screen power supply circuit and an ink screen that cooperate with each other are arranged in the ink screen terminal control circuit capable of preventing the influence of static electricity; the ink screen main control circuit and the ink screen slave control circuit are both provided with a plurality of bidirectional voltage regulator diodes; a bidirectional voltage regulator diode, a bootstrap boost capacitor and a common-mode inductor are arranged in the voltage adjustment circuit; the plurality of bidirectional voltage regulator diodes can protect the ink screen main control circuit and the ink screen slave control circuit from the impact of static electricity; the bidirectional voltage regulator diode, the bootstrap boost capacitor and the common-mode inductor can protect the voltage adjustment circuit from the impact of static electricity; a bidirectional voltage regulator diode is added at the position of the control button to protect the main control module from the impact of static electricity; a common-mode inductor and a bidirectional voltage regulator diode are added at the power supply position to protect the voltage adjustment circuit from the impact of static electricity; a bidirectional voltage regulator diode is added after the voltage transformation; and a power supply of the voltage regulator chip U5 is connected to the power supply of the voltage regulator chip U5. A bootstrap capacitor is added to the control pin to protect the voltage regulator chip U5 from static electricity shock, thereby improving the ability of the ink screen terminal to prevent static electricity in different environments, and solving the problem in the prior art that the ink screen is easily affected by static electricity and even static electricity may burn the ink screen circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a principle block diagram of an ink screen terminal control circuit capable of preventing static electricity from affecting the present invention;

[0019] Figure 2 A circuit diagram of the main control circuit of the ink screen of the present invention;

[0020] Figure 3 A circuit diagram of an ink screen slave control circuit of the present invention;

[0021] Figure 4 is a circuit diagram of a voltage regulating circuit of the present invention;

[0022] Figure 5 This is a circuit diagram of the ink screen power supply circuit of the present invention. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] like Figure 1-5As shown, the present invention provides an ink screen terminal control circuit capable of preventing the influence of static electricity, including a voltage adjustment circuit, an ink screen main control circuit, an ink screen slave control circuit, an ink screen power supply circuit and an ink screen, the input end of the voltage adjustment circuit is connected to a power supply, the output end of the voltage adjustment circuit is connected to the ink screen main control circuit, the ink screen slave control circuit, and the ink screen power supply circuit, the output end of the ink screen main control circuit is connected to the input end of the ink screen slave control circuit, the output end of the ink screen slave control circuit is connected to the input end of the ink screen power supply circuit and the input end of the ink screen, the output end of the ink screen power supply circuit is connected to the ink screen power supply, the input end of the ink screen main control circuit is also connected to a control button, the control button includes a menu button, a setting button, a right button, a left button, a selection button and a return button, and the input end of the ink screen main control circuit can also be connected to an SD memory card. In this embodiment, the ink screen main control circuit and the ink screen slave control circuit are both provided with multiple bidirectional voltage regulator diodes, and the voltage adjustment circuit is provided with bidirectional voltage regulator diodes, bootstrap boost capacitors and common-mode inductors. The multiple bidirectional voltage regulator diodes can protect the ink screen main control circuit and the ink screen slave control circuit from static electricity impacts. The bidirectional voltage regulator diodes, bootstrap boost capacitors and common-mode inductors can protect the voltage adjustment circuit from static electricity impacts. Bidirectional voltage regulator diodes are added at the position of the control buttons to protect the main control module from static electricity impacts. Common-mode inductors and bidirectional voltage regulator diodes are added at the power supply position to protect the voltage adjustment circuit from static electricity impacts. Bidirectional voltage regulator diodes are added after the voltage transformation, and bootstrap boost capacitors are added to the Power control pin of the voltage regulator chip U5 to protect the voltage regulator chip U5 from static electricity impacts, thereby improving the ability of the ink screen terminal to prevent static electricity in different environments.

[0027] like Figure 2As shown, the main control circuit of the ink screen is provided with a main control chip U1, a USB interface J100, a resistor R101, a resistor R102, a bidirectional voltage regulator diode D9, a bidirectional voltage regulator diode D10, a bidirectional voltage regulator diode D11 and an SD memory card interface J1, wherein the model of the main control chip U1 is RP2040, the main control chip U1 is provided with 57 pins, the USB interface J100 is provided with 5 pins, the output end of the SD memory card interface J1 is provided with 9 pins, the input end of the SD memory card interface J1 can be connected to the SD memory card, the 4th pin of the SD memory card interface J1, the 43rd, 44th, 48th pins of the main control chip U1 and the output of the voltage adjustment circuit The 15th, 16th, 17th and 18th pins of the main control chip U1 are connected to the input end of the ink screen slave control circuit, the 4th, 5th, 6th and 7th pins of the main control chip U1 are respectively connected to the 5th, 3rd, 7th and 2nd pins of the SD memory card interface J1, the 46th pin of the main control chip U1 is connected to one end of the resistor R101, the other end of the resistor R101 is connected to the 2nd pin of the USB interface J100 and one end of the bidirectional voltage regulator diode D10, the 47th pin of the main control chip U1 is connected to one end of the resistor R102, the other end of the resistor R102 is connected to the 3rd pin of the USB interface J100 and one end of the bidirectional voltage regulator diode D11, the USB interface J The first pin of 100 is connected to one end of the bidirectional voltage regulator diode D9 and the output end of the voltage adjustment circuit, the fourth pin of the USB interface J100, the other end of the bidirectional voltage regulator diode D9, the other end of the bidirectional voltage regulator diode D10, and the other end of the bidirectional voltage regulator diode D11 are grounded; the main control circuit of the ink screen is also provided with a UART interface J101, a bidirectional voltage regulator diode D24, a bidirectional voltage regulator diode D25, a bidirectional voltage regulator diode D26, a bidirectional voltage regulator diode D27, a bidirectional voltage regulator diode D28 and a FLASH memory chip U2, the UART interface J101 has 6 pins, the FLASH memory chip U2 has 8 pins, and the FLASH memory The 1st, 2nd, 3rd, 5th, 6th and 7th pins of the chip U2 are respectively connected to the 56th, 55th, 54th, 53rd, 52nd and 51st pins of the main control chip U1. The 1st pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D28 and the output end of the voltage adjustment circuit. The 2nd pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D27 and the 2nd pin of the main control chip U1. The 3rd pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D26 and the 3rd pin of the main control chip U1. The 4th pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D25 and the 24th pin of the main control chip U1.The 6th pin of UART interface J101 is connected to one end of bidirectional voltage regulator diode D24 and the 25th pin of main control chip U1; the main control circuit of ink screen also includes menu button trigger switch MENU, resistor R7, bidirectional voltage regulator diode D1, setting button trigger switch SET, resistor R8, bidirectional voltage regulator diode D2, left button trigger switch L, resistor R9, bidirectional voltage regulator diode D3, right button trigger switch R, resistor R10, bidirectional voltage regulator diode D4, selection button trigger switch OK, resistor R11, bidirectional voltage regulator diode D5, return button trigger switch EXIT, resistor R12 and bidirectional voltage regulator diode D6. Diode D6, one end of the menu button trigger switch MENU is connected to the output end of the voltage adjustment circuit, the other end of the menu button trigger switch MENU is connected to one end of the resistor R7 and one end of the bidirectional voltage regulator diode D1, the other end of the resistor R7 is connected to the 8th pin of the main control chip U1, one end of the setting button trigger switch SET is connected to the output end of the voltage adjustment circuit, the other end of the setting button trigger switch SET is connected to one end of the resistor R8 and one end of the bidirectional voltage regulator diode D2, the other end of the resistor R8 is connected to the 9th pin of the main control chip U1, one end of the left button trigger switch L is connected to the output end of the voltage adjustment circuit The other end of the left key trigger switch L is connected to one end of the resistor R9 and one end of the bidirectional voltage regulator diode D3, the other end of the resistor R9 is connected to the 11th pin of the main control chip U1, one end of the right key trigger switch R is connected to the output end of the voltage adjustment circuit, the other end of the right key trigger switch R is connected to one end of the resistor R10 and one end of the bidirectional voltage regulator diode D4, the other end of the resistor R10 is connected to the 12th pin of the main control chip U1, one end of the selection key trigger switch OK is connected to the output end of the voltage adjustment circuit, the other end of the selection key trigger switch OK is connected to one end of the resistor R11 and one end of the bidirectional voltage regulator diode D5 The other end of the resistor R11 is connected to the 13th pin of the main control chip U1, one end of the return button trigger switch EXIT is connected to the output end of the voltage adjustment circuit, the other end of the return button trigger switch EXIT is connected to one end of the resistor R12 and one end of the bidirectional zener diode D6, the other end of the resistor R12 is connected to the 14th pin of the main control chip U1, the other end of the bidirectional zener diode D1, the other end of the bidirectional zener diode D2, the other end of the bidirectional zener diode D3, the other end of the bidirectional zener diode D4, the other end of the bidirectional zener diode D5, and the other end of the bidirectional zener diode D6 are grounded. In this embodiment, the bidirectional zener diode D9, the bidirectional zener diode D10, and the bidirectional zener diode D11 can protect the main control circuit of the ink screen from the impact of static electricity from the USB interface J100, and the bidirectional zener diode D24, the bidirectional zener diode D25, the bidirectional zener diode D26, the bidirectional zener diode D27, and the bidirectional zener diode D28 can protect the main control circuit of the ink screen from the impact of static electricity from the UART interface J101.Bidirectional Zener diodes D1, D2, D3, D4, D5, and D6 can protect the main control circuit of the e-ink screen from the impact of static electricity from the control buttons; at the same time, the main control circuit of the e-ink screen is used to control the slave control circuit of the e-ink screen according to the input information of the control buttons.

[0028] like Figure 3As shown, the ink screen slave control circuit is provided with a slave control chip U3, a USB interface J300, a resistor R301, a resistor R302, a bidirectional voltage regulator diode D13, a bidirectional voltage regulator diode D14 and a bidirectional voltage regulator diode D15, wherein the model of the slave control chip U3 is RP2040, the slave control chip U3 is provided with 57 pins, the USB interface J300 is provided with 5 pins, the 43rd, 44th and 48th pins of the slave control chip U3 are connected to the output end of the voltage adjustment circuit, the 27th, 28th, 29th and 30th pins of the slave control chip U3 are connected to the 18th, 16th, 17th and 15th pins of the main control chip U1 respectively, and the 4th, 5th, 6th, 7th, 8th, 9th, 10th and 11th pins of the slave control chip U3 are connected to the output end of the voltage adjustment circuit respectively. Pins 1, 12, 13, 14, 15, 16, 17, and 18 are connected to the input end of the ink screen. Pins 31, 32, 34, 35, 36, 38, and 40 of the control chip U3 are connected to the input end of the ink screen power supply circuit. Pin 46 of the control chip U3 is connected to one end of the resistor R301. The other end of the resistor R301 is connected to pin 2 of the USB interface J300 and one end of the bidirectional voltage regulator diode D14. Pin 47 of the control chip U3 is connected to one end of the resistor R302. The other end of the resistor R302 is connected to pin 3 of the USB interface J300 and one end of the bidirectional voltage regulator diode D15. Pin 1 of the USB interface J300 is connected to the bidirectional voltage regulator diode D1 3 and the output end of the voltage adjustment circuit are connected, the 4th pin of the USB interface J300, the other end of the bidirectional voltage regulator diode D13, the other end of the bidirectional voltage regulator diode D14, and the other end of the bidirectional voltage regulator diode D15 are grounded; the ink screen slave control circuit is also provided with a UART interface J31, a bidirectional voltage regulator diode D18, a bidirectional voltage regulator diode D19, a bidirectional voltage regulator diode D21, a bidirectional voltage regulator diode D22, a bidirectional voltage regulator diode D23 and a FLASH memory chip U4, the UART interface J31 has 6 pins, the FLASH memory chip U4 has 8 pins, and the 1st, 2nd, 3rd, 5th, 6th, and 7th pins of the FLASH memory chip U4 are respectively connected to the slave control chip U3 The 56, 55, 54, 53, 52, and 51 pins of the UART interface J31 are connected, the 1st pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D18 and the output end of the voltage adjustment circuit, the 2nd pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D19 and pin 2 of the slave control chip U3, the 3rd pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D21 and pin 3 of the slave control chip U3, the 4th pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D22 and pin 24 of the slave control chip U3, and the 6th pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D23 and pin 25 of the slave control chip U3.In this embodiment, bidirectional zener diode D13, bidirectional zener diode D14 and bidirectional zener diode D15 can protect the ink screen slave control circuit from the impact of static electricity from the USB interface J300, and bidirectional zener diode D18, bidirectional zener diode D19, bidirectional zener diode D21, bidirectional zener diode D22 and bidirectional zener diode D23 can protect the ink screen main control circuit from the impact of static electricity from the UART interface J31; at the same time, the ink screen slave control circuit is used to control the ink screen power supply circuit to power the ink screen and control the ink screen to display according to the control information of the ink screen main control circuit.

[0029] like Figure 4 As shown, the voltage regulating circuit is provided with a voltage stabilizing chip U5, a fuse resistor F1, an inductor FB9, a resistor R150, a common mode inductor T1, a bidirectional voltage stabilizing diode D29, a bootstrap capacitor C51, an inductor FB10, a common mode inductor T2 and a bidirectional voltage stabilizing diode D30, wherein the model of the voltage stabilizing chip U5 is SY7072A, and the voltage stabilizing chip U5 is provided with 6 pins, the 6th pin of the voltage stabilizing chip U5 is connected to one end of the inductor FB9, the other end of the inductor FB9 is connected to one end of the resistor R150 and one end of the bidirectional voltage stabilizing diode D29, the other end of the resistor R150 is connected to one end of the fuse resistor F1, and the other end of the fuse resistor F1 is connected to the output end of the common mode inductor T1, and the common mode inductor The input end of inductor T1 is connected to a power supply, the 4th pin of the voltage regulator chip U5 is connected to the 34th pin of the main control chip U1 and one end of the bootstrap boost capacitor C51, the 5th pin of the voltage regulator chip U5 is connected to one end of the inductor FB10, the other end of the inductor FB10 is connected to the input end of the common-mode inductor T2, the output end of the common-mode inductor T2 is connected to one end of the bidirectional voltage regulator diode D30, the ink screen power supply circuit, the 43rd, 44th, and 48th pins of the main control chip U1, and the 43rd, 44th, and 48th pins of the slave control chip U3, the 2nd pin of the voltage regulator chip U5, the other end of the bidirectional voltage regulator diode D29, the other end of the bidirectional voltage regulator diode D30, and the other end of the bootstrap boost capacitor C51 are grounded. In this embodiment, the voltage adjustment circuit is used to supply power to the ink screen main control circuit, the ink screen slave control circuit, and the ink screen power supply circuit. The common-mode inductor T1, the bidirectional voltage regulator diode D29, the bootstrap capacitor C51, the common-mode inductor T2 and the bidirectional voltage regulator diode D30 can protect the voltage adjustment circuit from static electricity shock.

[0030] like Figure 5As shown, the ink screen power supply circuit is provided with a power supply management chip U6, a diode D602, a diode D603, a diode D604 and a diode D605, wherein the model of the power supply management chip U6 is TPS65185RGZR, and the power supply management chip U6 has 48 pins. The 24th and 45th pins of the power supply management chip U6 are connected to the output end of the common mode inductor T2, and the 12th, 18th, 17th, 21st, 5th, 23rd and 2nd pins of the power supply management chip U6 are connected to the 34th, 31st, 32nd, 38th and 39th pins of the slave control chip U3 respectively. The 40, 36, and 35 pins are connected, the 34th pin of the power supply management chip U6 is connected to the positive electrode of the diode D602, the negative electrode of the diode D602 is connected to the positive electrode of the diode D603, the negative electrode of the diode D603 is connected to the ink screen power supply, the 30th pin of the power supply management chip U6 is connected to the negative electrode of the diode D604, the positive electrode of the diode D604 is connected to the negative electrode of the diode D605, the positive electrode of the diode D605 is connected to the ink screen power supply, and the 44th, 15th, and 3rd pins of the power supply management chip U6 are connected to the ink screen power supply. In this embodiment, the ink screen power supply circuit is used to provide the ink screen with 22V, 15V, 2V, -15V, and -20V working voltages according to the control signal of the ink screen slave control circuit.

[0031] As can be seen from the above, the present invention provides an ink screen terminal control circuit capable of preventing the influence of static electricity. By arranging a voltage adjustment circuit, an ink screen main control circuit, an ink screen slave control circuit, an ink screen power supply circuit and an ink screen that cooperate with each other in the ink screen terminal control circuit capable of preventing the influence of static electricity, the ink screen main control circuit and the ink screen slave control circuit are both provided with a plurality of bidirectional voltage regulator diodes, and the voltage adjustment circuit is provided with a bidirectional voltage regulator diode, a bootstrap boost capacitor and a common-mode inductor. The plurality of bidirectional voltage regulator diodes can protect the ink screen main control circuit and the ink screen slave control circuit from static electricity impact, the bidirectional voltage regulator diode, the bootstrap boost capacitor and the common-mode inductor can protect the voltage adjustment circuit from static electricity impact, a bidirectional voltage regulator diode is added at the position of the control button to protect the main control module from static electricity impact, a common-mode inductor and a bidirectional voltage regulator diode are added at the power supply position to protect the voltage adjustment circuit from static electricity impact, a bidirectional voltage regulator diode is added after the voltage transformation, and a power supply of the voltage regulator chip U5 is connected to the power supply of the voltage regulator chip U5. A bootstrap capacitor is added to the control pin to protect the voltage regulator chip U5 from static electricity shock, thereby improving the ability of the ink screen terminal to prevent static electricity in different environments, and solving the problem in the prior art that the ink screen is easily affected by static electricity and even static electricity may burn the ink screen circuit.

[0032] The specific implementation modes described above are preferred implementation modes of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation modes, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. An ink screen terminal control circuit capable of preventing the influence of static electricity, characterized in that: The electronic ink display device comprises a voltage regulating circuit, an ink screen main control circuit, an ink screen slave control circuit, an ink screen power supply circuit and an ink screen, wherein the input end of the voltage regulating circuit is connected to a power supply, the output end of the voltage regulating circuit is connected to the ink screen main control circuit, the ink screen slave control circuit and the ink screen power supply circuit for power supply, the output end of the ink screen main control circuit is connected to the input end of the ink screen slave control circuit, the output end of the ink screen slave control circuit is connected to the input end of the ink screen power supply circuit and the input end of the ink screen, the output end of the ink screen power supply circuit is connected to the ink screen power supply, and the input end of the ink screen main control circuit is also connected to the input end of the ink screen main control circuit. Control buttons are connected, and the control buttons include a menu button, a setting button, a right button, a left button, a selection button and a return button. The input end of the ink screen main control circuit can also be connected to an SD memory card. The ink screen main control circuit and the ink screen slave control circuit are both provided with multiple bidirectional voltage regulator diodes. The voltage adjustment circuit is provided with bidirectional voltage regulator diodes, bootstrap boost capacitors and common-mode inductors. The multiple bidirectional voltage regulator diodes can protect the ink screen main control circuit and the ink screen slave control circuit from static electricity. The bidirectional voltage regulator diodes, the bootstrap boost capacitors and the common-mode inductors can protect the voltage adjustment circuit from static electricity.

2. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 1, characterized in that: The ink screen main control circuit is provided with a main control chip U1, a USB interface J100, a resistor R101, a resistor R102, a bidirectional voltage regulator diode D9, a bidirectional voltage regulator diode D10, a bidirectional voltage regulator diode D11 and an SD memory card interface J1, wherein the main control chip U1 is provided with 57 pins, the USB interface J100 is provided with 5 pins, the output end of the SD memory card interface J1 is provided with 9 pins, the input end of the SD memory card interface J1 can be connected to an SD memory card, the 4th pin of the SD memory card interface J1, the 43rd, 44th, and 48th pins of the main control chip U1 are connected to the output end of the voltage adjustment circuit, the 15th, 16th, 17th, and 18th pins of the main control chip U1 are connected to the input end of the ink screen slave control circuit, and the 4th, 5th, 6th, and 7th pins of the main control chip U1 are respectively connected to the S The 5th, 3rd, 7th and 2nd pins of the D memory card interface J1 are connected, the 46th pin of the main control chip U1 is connected to one end of the resistor R101, the other end of the resistor R101 is connected to the 2nd pin of the USB interface J100 and one end of the bidirectional voltage regulator diode D10, the 47th pin of the main control chip U1 is connected to one end of the resistor R102, the other end of the resistor R102 is connected to the 3rd pin of the USB interface J100 and one end of the bidirectional voltage regulator diode D11, the 1st pin of the USB interface J100 is connected to one end of the bidirectional voltage regulator diode D9 and the output end of the voltage adjustment circuit, the 4th pin of the USB interface J100, the other end of the bidirectional voltage regulator diode D9, the other end of the bidirectional voltage regulator diode D10 and the other end of the bidirectional voltage regulator diode D11 are grounded.

3. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 2, characterized in that: The ink screen main control circuit is also provided with a UART interface J101, a bidirectional voltage regulator diode D24, a bidirectional voltage regulator diode D25, a bidirectional voltage regulator diode D26, a bidirectional voltage regulator diode D27, a bidirectional voltage regulator diode D28 and a FLASH storage chip U2. The UART interface J101 is provided with 6 pins, and the FLASH storage chip U2 is provided with 8 pins. The 1st, 2nd, 3rd, 5th, 6th, and 7th pins of the FLASH storage chip U2 are respectively connected to the 56th, 55th, 54th, 53rd, 52nd, and 51st pins of the main control chip U1. The 1st pin of the UART interface J101 is connected to the 56th, 55th, 54th, 53rd, 52nd, and 51st pins of the main control chip U1. The UART interface J101 is connected to one end of the bidirectional voltage regulator D28 and the output end of the voltage regulating circuit, the second pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D27 and the 2nd pin of the main control chip U1, the third pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D26 and the 3rd pin of the main control chip U1, the fourth pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D25 and the 24th pin of the main control chip U1, and the sixth pin of the UART interface J101 is connected to one end of the bidirectional voltage regulator diode D24 and the 25th pin of the main control chip U1.

4. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 3 is characterized in that: The ink screen main control circuit is also provided with a menu button trigger switch MENU, a resistor R7, a bidirectional voltage regulator diode D1, a setting button trigger switch SET, a resistor R8, a bidirectional voltage regulator diode D2, a left button trigger switch L, a resistor R9, a bidirectional voltage regulator diode D3, a right button trigger switch R, a resistor R10, a bidirectional voltage regulator diode D4, a selection button trigger switch OK, a resistor R11, a bidirectional voltage regulator diode D5, a return button trigger switch EXIT, a resistor R12 and a bidirectional voltage regulator diode D6. One end of the menu button trigger switch MENU is connected to the output end of the voltage adjustment circuit, and the other end of the menu button trigger switch MENU is connected to the output end of the voltage adjustment circuit. The first end of the left key trigger switch L is connected to one end of the resistor R7 and one end of the bidirectional voltage regulator diode D1, the other end of the resistor R7 is connected to the 8th pin of the main control chip U1, one end of the setting key trigger switch SET is connected to the output end of the voltage adjustment circuit, the other end of the setting key trigger switch SET is connected to one end of the resistor R8 and one end of the bidirectional voltage regulator diode D2, the other end of the resistor R8 is connected to the 9th pin of the main control chip U1, one end of the left key trigger switch L is connected to the output end of the voltage adjustment circuit, the other end of the left key trigger switch L is connected to one end of the resistor R9 and the bidirectional voltage regulator diode D3 , the other end of the resistor R9 is connected to the 11th pin of the main control chip U1, one end of the right key trigger switch R is connected to the output end of the voltage adjustment circuit, the other end of the right key trigger switch R is connected to one end of the resistor R10 and one end of the bidirectional voltage regulator diode D4, the other end of the resistor R10 is connected to the 12th pin of the main control chip U1, one end of the selection key trigger switch OK is connected to the output end of the voltage adjustment circuit, the other end of the selection key trigger switch OK is connected to one end of the resistor R11 and one end of the bidirectional voltage regulator diode D5, the other end of the resistor R11 is connected to the The return button trigger switch EXIT is connected to the 13th pin of the main control chip U1, one end of the return button trigger switch EXIT is connected to the output end of the voltage adjustment circuit, the other end of the return button trigger switch EXIT is connected to one end of the resistor R12 and one end of the bidirectional voltage regulator diode D6, the other end of the resistor R12 is connected to the 14th pin of the main control chip U1, the other end of the bidirectional voltage regulator diode D1, the other end of the bidirectional voltage regulator diode D2, the other end of the bidirectional voltage regulator diode D3, the other end of the bidirectional voltage regulator diode D4, the other end of the bidirectional voltage regulator diode D5, and the other end of the bidirectional voltage regulator diode D6 are grounded.

5. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 4 is characterized in that: The ink screen slave control circuit is provided with a slave control chip U3, a USB interface J300, a resistor R301, a resistor R302, a bidirectional voltage regulator diode D13, a bidirectional voltage regulator diode D14 and a bidirectional voltage regulator diode D15, wherein the slave control chip U3 is provided with 57 pins, the USB interface J300 is provided with 5 pins, the 43rd, 44th and 48th pins of the slave control chip U3 are connected to the output end of the voltage adjustment circuit, the 27th, 28th, 29th and 30th pins of the slave control chip U3 are respectively connected to the 18th, 16th, 17th and 15th pins of the main control chip U1, the 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th and 18th pins of the slave control chip U3 are connected to the input end of the ink screen, and the 31st, 32nd, 34th, 35th, 36th, 37th pins of the slave control chip U3 are connected to the input end of the ink screen.

8. Pin 40 is connected to the input end of the ink screen power supply circuit, pin 46 of the slave control chip U3 is connected to one end of the resistor R301, the other end of the resistor R301 is connected to pin 2 of the USB interface J300 and one end of the bidirectional voltage regulator diode D14, pin 47 of the slave control chip U3 is connected to one end of the resistor R302, the other end of the resistor R302 is connected to pin 3 of the USB interface J300 and one end of the bidirectional voltage regulator diode D15, pin 1 of the USB interface J300 is connected to one end of the bidirectional voltage regulator diode D13 and the output end of the voltage adjustment circuit, pin 4 of the USB interface J300, the other end of the bidirectional voltage regulator diode D13, the other end of the bidirectional voltage regulator diode D14, and the other end of the bidirectional voltage regulator diode D15 are grounded.

6. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 5, characterized in that: The ink screen slave control circuit is also provided with a UART interface J31, a bidirectional voltage regulator diode D18, a bidirectional voltage regulator diode D19, a bidirectional voltage regulator diode D21, a bidirectional voltage regulator diode D22, a bidirectional voltage regulator diode D23 and a FLASH storage chip U4. The UART interface J31 is provided with 6 pins, and the FLASH storage chip U4 is provided with 8 pins. The 1st, 2nd, 3rd, 5th, 6th and 7th pins of the FLASH storage chip U4 are respectively connected to the 56th, 55th, 54th, 53rd, 52nd and 51st pins of the slave control chip U3. The 1st pin of the UART interface J31 is connected to the 56th, 55th, 54th, 53rd, 52nd and 51st pins of the bidirectional voltage regulator diode D 18 is connected to one end of the voltage regulating circuit, the 2nd pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D19 and the 2nd pin of the slave control chip U3, the 3rd pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D21 and the 3rd pin of the slave control chip U3, the 4th pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D22 and the 24th pin of the slave control chip U3, and the 6th pin of the UART interface J31 is connected to one end of the bidirectional voltage regulator diode D23 and the 25th pin of the slave control chip U3.

7. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 6, characterized in that: The voltage regulating circuit is provided with a voltage stabilizing chip U5, a fuse resistor F1, an inductor FB9, a resistor R150, a common mode inductor T1, a bidirectional voltage stabilizing diode D29, a bootstrap capacitor C51, an inductor FB10, a common mode inductor T2 and a bidirectional voltage stabilizing diode D30, wherein the voltage stabilizing chip U5 is provided with 6 pins, the 6th pin of the voltage stabilizing chip U5 is connected to one end of the inductor FB9, the other end of the inductor FB9 is connected to one end of the resistor R150 and one end of the bidirectional voltage stabilizing diode D29, the other end of the resistor R150 is connected to one end of the fuse resistor F1, the other end of the fuse resistor F1 is connected to the output end of the common mode inductor T1, the input end of the common mode inductor T1 is connected to a power supply, and the The 4th pin of the voltage stabilizing chip U5 is connected to the 34th pin of the main control chip U1 and one end of the bootstrap capacitor C51, the 5th pin of the voltage stabilizing chip U5 is connected to one end of the inductor FB10, the other end of the inductor FB10 is connected to the input end of the common-mode inductor T2, the output end of the common-mode inductor T2 is connected to one end of the bidirectional voltage stabilizing diode D30, the ink screen power supply circuit, the 43rd, 44th, and 48th pins of the main control chip U1, and the 43rd, 44th, and 48th pins of the slave control chip U3, the 2nd pin of the voltage stabilizing chip U5, the other end of the bidirectional voltage stabilizing diode D29, the other end of the bidirectional voltage stabilizing diode D30, and the other end of the bootstrap capacitor C51 are grounded.

8. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 7, characterized in that: The ink screen power supply circuit is provided with a power supply management chip U6, a diode D602, a diode D603, a diode D604 and a diode D605, wherein the power supply management chip U6 is provided with 48 pins, the 24th and 45th pins of the power supply management chip U6 are connected to the output end of the common mode inductor T2, the 12th, 18th, 17th, 21st, 5th, 23rd and 2nd pins of the power supply management chip U6 are respectively connected to the 34th, 31st, 32nd, 38th, 40th, 36th and 35th pins of the slave control chip U3, and the power supply management chip U The 34th pin of the power supply management chip U6 is connected to the positive electrode of the diode D602, the negative electrode of the diode D602 is connected to the positive electrode of the diode D603, the negative electrode of the diode D603 is connected to the power supply of the ink screen, the 30th pin of the power supply management chip U6 is connected to the negative electrode of the diode D604, the positive electrode of the diode D604 is connected to the negative electrode of the diode D605, the positive electrode of the diode D605 is connected to the power supply of the ink screen, and the 44th, 15th, and 3rd pins of the power supply management chip U6 are connected to the power supply of the ink screen.

9. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 8, characterized in that: The model of the master control chip U1 is RP2040, and the model of the slave control chip U3 is RP2040.

10. The control circuit of the ink screen terminal capable of preventing the influence of static electricity according to claim 9, characterized in that: The model of the voltage stabilizing chip U5 is SY7072A, and the model of the power supply management chip U6 is TPS65185RGZR.

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