A mouse with a display screen

Abstract

The utility model discloses a mouse with display screen relates to computer input device technical field, including mouse body, the shell of mouse body is provided with the display screen and button module for carrying out DPI display, the inside installation of mouse body's main control board, the main control board is integrated with: main control module, the sensor module for gathering mobile data, carries wireless communication module, screen drive circuit and the power management module with the electric quantity monitoring function of double mode or multimode communication, the utility model discloses through the cooperation of display screen, button module and main control board, can with the form of number, figure or character, real -time, synchronous and accurate display DPI numerical value, wireless connection mode and accurate electric quantity percentage, and user does not need to carry out any additional operation, overcomes the traditional pilot lamp abstract mode, inaccuracy's defect, has realized the what you see is what you get of information transmission, has improved the convenience and intuitiveness of operation greatly.

Description

Technical Field

[0001] This utility model relates to the field of computer input device technology, specifically a mouse with a display screen. Background Technology

[0002] The mouse is a commonly used computer input device in human-computer interaction devices. There are many types of mice on the market, such as wireless gaming mice, wired mice, and high-end office mice. Among them, wireless gaming mice and high-end office mice usually have adjustable DPI (dots per inch) sensitivity, rechargeable batteries, and multi-mode (such as 2.4GHz and Bluetooth) wireless connection functions. In order to provide feedback to users on these internal statuses, LED indicator lights are usually used to display them. That is, one or more LEDs of different colors are set on the mouse shell to indicate DPI, battery level, and connection mode. When indicating DPI, different colored lights or different flashing frequencies are used to represent several preset DPI levels. For example, a solid red light represents DPI level 1, and a solid blue light represents level 2. When the battery level is low, a warning is usually given by a rapidly flashing light of a specific color (such as red) only when the battery is low. Some mice will display a breathing light mode when charging, and stay on when fully charged. When indicating the connection mode, multi-mode mice usually indicate a successful switch by briefly flashing a light of a certain color, but it is not intuitive to distinguish which specific device is currently connected. However, displaying information via LED indicators requires converting specific numerical information (such as DPI value and battery percentage) into abstract colors or flashing patterns that users need to memorize and interpret. Users cannot directly obtain precise information such as "DPI 1600" or "battery 75%", resulting in high learning costs and easy forgetting or confusion. This fails to meet the needs of modern users for efficient, accurate, and convenient monitoring of device status. Utility Model Content

[0003] The purpose of this invention is to provide a mouse with a display screen that provides an intuitive, accurate, and information-rich display method, completely changing the information interaction mode between the user and the mouse, upgrading the mouse from a passive operation tool to an intelligent terminal with active information feedback capabilities, meeting the high-level needs of professional users for performance controllability, and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mouse with a display screen, comprising a mouse body, wherein the outer shell of the mouse body is provided with a display screen for displaying DPI and a button module, and a main control board installed inside the mouse body, the main control board integrating: a main control module, a sensor module for collecting movement data, a wireless communication module for dual-mode or multi-mode communication, a screen driving circuit, and a power management module with power monitoring function, wherein the screen driving circuit is electrically connected to the display screen, the button module is electrically connected to the main control module, and the wireless communication module and the sensor module are both electrically connected to the power management module.

[0005] Preferably, the main control module includes a main control chip U4, with a capacitor C19 connected to ground at pin 13 of the main control chip U4, a capacitor C21 connected to ground at pin 15 of the main control chip U4, an inductor L5 connected between pins 16 and 17 of the main control chip U4, capacitors C23 and C24 connected in parallel at pin 18 of the main control chip U4, and a capacitor C22 connected to ground at pin 19 of the main control chip U4.

[0006] Preferably, the button module includes a left button, a right button, a scroll wheel, a DPI switch button, and side function buttons. The left and right buttons are mounted side by side on the upper part of the mouse shell, the scroll wheel is located between the left and right buttons, the DPI switch button is located on one side of the scroll wheel, and the side function buttons are located on the side of the mouse shell.

[0007] Preferably, the power management module includes a charging management unit, a USB DC power supply circuit, and a step-down unit. The charging management unit and the step-down unit are electrically connected to the step-down unit and the USB DC power supply circuit, respectively. Both the step-down unit and the USB DC power supply circuit are electrically connected to the main control chip U4.

[0008] Preferably, the charging management unit includes a management chip U1. Pin 1 of the management chip U1 is connected to resistors R2 and R3 for connecting to the battery. Pin 2 of the management chip U1 is connected to a ground resistor R1. Pin 4 of the management chip U1 is connected to a resistor R13 and a ground capacitor C12 arranged in series. Pin 5 of the management chip U1 is connected to a switching unit, which is connected to the step-down unit.

[0009] Preferably, the step-down unit includes a resistor R4 for connection to the main control chip U4, and voltage regulator chips U2 and U3 connected in parallel with the resistor R4. The input pin of the voltage regulator chip U2 has capacitors C8 and C10 connected in parallel to ground, the output pin of the voltage regulator chip U2 has capacitors C13 and C14 connected in parallel to ground, the input pin of the voltage regulator chip U3 has capacitors C1 and C18 connected in parallel to ground, and the output pin of the voltage regulator chip U3 has capacitors C4 and C15 connected in parallel to ground.

[0010] Preferably, the sensor module includes an optical navigation sensor U10. Pin 1 of the optical navigation sensor U10 is connected to a light-emitting diode D7. The positive terminal of the light-emitting diode D7 is connected to a resistor R8. One end of the resistor R8 is connected to capacitors C25 and C27 connected in parallel. Pin 2 of the optical navigation sensor U10 is connected in parallel to capacitors C29 and C25. Pin 3 of the optical navigation sensor U10 is connected in parallel to capacitors C30 and C31.

[0011] Preferably, the sensor module includes an encoder, pin 1 of which is connected to a resistor R54 for connection to the main control chip U4, pin 2 of which is connected in parallel to a resistor R53 and a resistor R61 for connection to the main control chip U4, and pin 3 of which is connected to a resistor R52.

[0012] Preferably, the wireless communication module includes a crystal oscillator Y1 connected to the main control chip U4 and an inductor L3 connected between pins 37 and 38 of the main control chip. One end of the inductor L3 is connected in parallel with a ground diode D1, a ground capacitor C5, and a capacitor C6. One end of the capacitor C6 is connected to a capacitor C7, and one end of the capacitor C7 is connected to an antenna ANT1.

[0013] Preferably, the screen driving circuit includes a MOSFET Q3 and a transistor Q4. A resistor R70 is connected between the gate (G) and source (S) of the MOSFET Q3. The collector of the transistor Q4 is connected to the gate (G) of the MOSFET Q3. A resistor R72 is connected between the base and emitter of the transistor Q4. A resistor R71 is connected to the connection point between the base of the transistor Q4 and the resistor R72. One end of the resistor R71 is connected to a terminal J5.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the cooperation of the display screen, button module and main control board, can display DPI value, wireless connection mode and accurate battery percentage in real time, synchronously and accurately in the form of numbers, graphics or text. Users do not need to perform any additional operations. It overcomes the shortcomings of the abstract mode and inaccuracy of traditional indicator lights, realizes the WYSIWYG information transmission, and greatly improves the convenience and intuitiveness of operation.

[0015] 2. The display screen of this utility model can display specific DPI values, so that users can not only accurately understand the current sensitivity settings, but also easily remember and reproduce their preferred settings. It is particularly beneficial for quick and accurate switching between different application scenarios or different software, meeting the high-level needs of professional users for performance controllability.

[0016] 3. This utility model, through the cooperation of the power management module and the main control module, enables users to monitor the remaining usage time of the mouse at any time, just like monitoring the battery level of a mobile phone. Users can make reasonable charging plans accordingly to prevent problems before they occur. This forward-looking power management capability completely avoids the embarrassment and risk of sudden power outages, and is especially suitable for mobile office and gaming users who use wireless mice for long periods of time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the mouse body of this utility model; Figure 3 This is a block diagram of the main control board of this utility model; Figure 4 This is a schematic diagram of the main control module circuit of this utility model; Figure 5 This is a schematic diagram of the power management module circuit of this utility model; Figure 6 This is a schematic diagram of the sensor module circuit of this utility model; Figure 7 This is a schematic diagram of the encoder circuit structure of this utility model; Figure 8 This is a schematic diagram of the screen driving circuit of this utility model.

[0018] In the picture: 1. Mouse body; 2. Display screen; 3. Left button; 4. Right button; 5. Scroll wheel; 6. DPI switch button; 7. Side function buttons; 8. Main control board. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-7 This utility model provides a technical solution: a mouse with a display screen, including a mouse body 1. The outer shell of the mouse body 1 is provided with a display screen 2 for DPI display and a button module. A main control board 8 is installed inside the mouse body 1. The main control board 8 integrates: a main control module, a sensor module for collecting movement data, a wireless communication module for dual-mode or multi-mode communication, a screen driving circuit, and a power management module with power monitoring function. The screen driving circuit is electrically connected to the display screen 2, the button module is electrically connected to the main control module, and both the wireless communication module and the sensor module are electrically connected to the power management module. The sensor module collects mouse movement data and transmits it to the main control module in real time. The wireless communication module obtains the current connection mode and responds accordingly. The current connection mode, such as 2.4G or Bluetooth 1 / 2, is fed to the main control module. The power management module monitors the battery voltage and current, calculates the remaining power percentage, and sends it to the main control module. The button module receives user operations, such as DPI switching and function key triggering, and transmits the instructions to the main control module. After receiving the data and instructions from each module, the main control module integrates and processes them according to preset logic. For example, it converts information such as DPI value, connection mode, and power percentage into a displayable signal format. The main control module sends the processed display information to the screen driver circuit. The screen driver circuit converts the signal into a driving signal that the display screen 2 can recognize. Finally, the DPI value, wireless connection mode, and power percentage are displayed on the display screen 2 in real time and synchronously in the form of numbers or text, realizing the WYSIWYG information. Through the cooperation of the display screen 2, button module and main control board 8, DPI value, wireless connection mode and accurate battery percentage can be displayed in real time, synchronously and accurately in the form of numbers, graphics or text. Users do not need to perform any additional operations. It overcomes the shortcomings of the abstract mode and inaccuracy of traditional indicator lights, realizes the WYSIWYG information transmission, and greatly improves the convenience and intuitiveness of operation.

[0021] The main control module includes a main control chip U4. A capacitor C19 is connected to ground at pin 13 of the main control chip U4, a capacitor C21 is connected to ground at pin 15 of the main control chip U4, an inductor L5 is connected between pins 16 and 17 of the main control chip U4, capacitors C23 and C24 are connected in parallel at pin 18 of the main control chip U4, and a capacitor C22 is connected to ground at pin 19 of the main control chip U4. The capacitors C19 and C21 are used to filter out noise and interference signals in the power supply signal when the main control chip U4 is operating, ensuring a stable power supply voltage to the main control chip U4 and preventing voltage fluctuations from affecting the chip's data processing accuracy and stability. The inductor L5 suppresses high-frequency noise in the circuit and stabilizes the transmission of key signals inside the main control chip U4, reducing signal attenuation and interference.

[0022] The button module includes a left button 3, a right button 4, a scroll wheel 5, a DPI switch button 6, and a side function button 7. The left button 3 and right button 4 are mounted side by side on the upper part of the mouse shell. The scroll wheel 5 is located between the left button 3 and right button 4. The DPI switch button 6 is located to one side of the scroll wheel 5. The side function button 7 is located on the side of the outer shell of the mouse body 1. When the DPI switch button 6 is pressed, the generated signal is transmitted to the main control module. The main control module switches the preset DPI value. On the one hand, it sends the new DPI value to the sensor module to adjust the mouse cursor movement sensitivity. On the other hand, it sends the new DPI value to the screen driver circuit to update the display on the display screen 2. When the side function button 7 is triggered, the command signal generated by it is processed by the main control module to realize preset functions, such as forward, backward, and custom shortcut operations, to meet the user's personalized usage needs.

[0023] The power management module includes a charging management unit, a USB DC power supply circuit, and a step-down unit. The charging management unit and the step-down unit are electrically connected to the step-down unit and the USB DC power supply circuit, respectively. Both the step-down unit and the USB DC power supply circuit are electrically connected to the main control chip U4. When the mouse is connected to an external power source via USB, the charging management unit receives the power input from the USB, first detects the current state of the battery, such as its charge level and voltage, and then controls the charging current and voltage according to a preset charging algorithm to perform constant current and constant voltage charging for the battery. At the same time, it monitors the charging process in real time. When the battery is fully charged, it automatically stops charging or switches to trickle charging mode to prevent the battery from being overcharged and damaged. When the battery is discharging or the external power source is supplying power, the step-down unit receives the input voltage, such as 3.7V from the battery or 5V from the USB. Through its internal voltage regulation and step-down circuit, it stabilizes the voltage to a voltage suitable for the operation of the main control chip U4, such as 3V or 2V, and continuously supplies power to the main control chip, ensuring the stable operation of the main control module and the entire mouse system, and avoiding device failure caused by excessively high or low voltage.

[0024] The USB DC power supply circuit includes a Type-C interface USB1. Pin A5 of the Type-C interface USB1 is connected to a resistor R48 to ground. Pin 0 of the Type-C interface USB1 is connected in parallel with a capacitor C20 and an inductor L6. Pin B5 of the Type-C interface USB1 is connected to a resistor R11 to ground. Pin 5 of the Type-C interface USB1 is connected to pin 8 of the management chip U1 through a resistor R14. Pin B6 of the Type-C interface USB1 is connected in parallel with a diode D3 to ground and a resistor R49 connected to the main control chip U4. Pin B8 of the Type-C interface USB1 is connected with a diode D12 and a resistor R69 connected to the main control chip U4.

[0025] The charging management unit includes a management chip U1. Pin 1 of the management chip U1 is connected to resistors R2 and R3 for connecting the battery. Pin 2 of the management chip U1 is connected to a resistor R1 to ground. Pin 4 of the management chip U1 is connected to a resistor R13 and a capacitor C12 connected to ground in series. Pin 5 of the management chip U1 is connected to a switching unit, which is connected to a step-down unit. Resistors R2 and R3 form a voltage divider circuit to collect the battery voltage signal in real time and transmit it to pin 1 of the management chip U1. The internal circuit of the management chip U1 processes this signal and calculates the remaining battery power. The resistor R1 to ground provides a stable reference voltage for pin 2 of the management chip U1 to ensure the normal operation of the chip's internal circuitry. Resistor R13 and capacitor C12 to ground form an RC filter circuit to filter the signal at pin 4 of the management chip U1, reducing interference and ensuring the accuracy of the chip's monitoring of relevant parameters during the charging process.

[0026] The switching unit includes a transistor Q1 and a MOSFET Q41. A resistor R46 is connected between the gate (G) and source (S) of the MOSFET Q41. The gate of the MOSFET Q41 is connected to the collector of the transistor Q1 through a series resistor R47 and a diode D9. A resistor R10 is connected between the base and emitter of the transistor Q1. A resistor R9 is connected to the connection point of the resistor R10 and the transistor Q1. An ESD1 is connected between the other ends of the resistor R9 and the resistor R10. Diodes D10 and D11 are connected in parallel at the connection point of the resistor R47 and the diode D9. One end of the diode D11 is connected to a control switch SW1, and a diode D13 is connected to the connection point of the diode D11 and the connection point of the control switch SW1. A resistor R5 for connecting to the main control chip is connected to the positive terminal of the diode D13.

[0027] The USB DC power supply circuit provides operating voltage to pin 8 of the management chip U1 through resistor R14. After the management chip U1 is started, it controls the switching unit connected to pin 5 according to the battery status. When the battery needs to be charged, the switching unit closes, and the power input from the USB is processed by the management chip U1 to charge the battery. When charging is not required or the external power supply is disconnected, the switching unit adjusts its state according to the instructions of the management chip U1 to ensure that the battery can normally power the mouse system, thus realizing the orderly switching between charging and power supply.

[0028] The step-down unit includes a resistor R4 for connection to the main control chip U4, and voltage regulator chips U2 and U3 connected in parallel with resistor R4. The input pins of voltage regulator chip U2 have capacitors C8 and C10 connected in parallel to ground, and the output pins have capacitors C13 and C14 connected in parallel to ground. The input pins of voltage regulator chip U3 have capacitors C1 and C18 connected in parallel to ground, and the output pins have capacitors C4 and C15 connected in parallel to ground. Voltage regulator chips U2 and U3, connected in parallel, receive the input voltage, such as 3.7V from a battery or 5V from a USB port. Through an internal voltage regulation circuit, the input voltage is stably converted into different target voltages, such as 3V output by U2 and 2V output by U3, to meet the voltage requirements of the main control chip U4 and other mouse modules, such as the sensor module and screen driver circuit. Resistor R4 connects the step-down unit to the main control chip U4, acting as a current limiter to protect the main control chip from excessive current surges. The capacitors C8 and C10 at the input pin of voltage regulator chip U2, and C13 and C14 at the output pin, along with C1 and C18 at the input pin and C4 and C15 at the output pin of U3, are all filter capacitors. The input-side capacitors filter out noise in the input voltage, ensuring a stable voltage entering the voltage regulator chip; the output-side capacitors filter out ripple in the output voltage of the voltage regulator chip, further ensuring the stability of the output voltage and providing a stable and clean power supply to each module, preventing voltage fluctuations from affecting the module's performance.

[0029] The sensor module includes an optical navigation sensor U10. Pin 1 of the optical navigation sensor U10 is connected to a light-emitting diode (LED) D7. A resistor R8 is connected to the positive terminal of the LED D7. One end of the resistor R8 is connected to capacitors C25 and C27 in parallel. Pin 2 of the optical navigation sensor U10 is connected in parallel to capacitors C29 and C25. Pin 3 of the optical navigation sensor U10 is connected in parallel to capacitors C30 and C31. Resistor R8 provides a suitable operating current to the LED D7, ensuring that D7 emits stable light that illuminates the desktop or mousepad surface below the mouse. Pin 1 of the optical navigation sensor U10 receives feedback from the light signal of D7, while the internal optical system of the sensor acquires an image of the light reflected from the desktop.

[0030] The sensor module includes an encoder. Pin 1 of the encoder is connected to a resistor R54 for connection to the main control chip U4. Pin 2 of the encoder is connected in parallel with a resistor R53 and a resistor R61 for connection to the main control chip U4. Pin 3 of the encoder is connected to a resistor R52. When the user scrolls the mouse wheel, the wheel drives the internal mechanical structure of the encoder to rotate. The encoder converts the mechanical rotation into two pulse electrical signals with a 90° phase difference, which are output from pins 1 and 2 respectively. Resistors R54 and R61 transmit the pulse signals from pins 1 and 2 of the encoder to the main control chip U4 respectively. At the same time, resistor R53 provides a pull-down or voltage divider for the signal at pin 2 to ensure signal stability. After receiving the two pulse signals, the main control chip U4 determines the scrolling direction (up or down) of the wheel by detecting the phase relationship of the signals (i.e., which signal arrives first), calculates the scrolling amplitude of the wheel by counting the number of pulse signals, and sends the corresponding page scrolling command to the computer based on this information. Resistor R52 provides a suitable circuit connection for pin 3 of the encoder to ensure the normal operation of the encoder as a whole.

[0031] The wireless communication module includes a crystal oscillator Y1 connected to the main control chip U4 and an inductor L3 connected between pins 37 and 38 of the main control chip. One end of the inductor L3 is connected in parallel with a diode D1 to ground, a capacitor C5 to ground, and a capacitor C6. One end of capacitor C6 is connected to a capacitor C7, and one end of capacitor C7 is connected to an antenna ANT1. The crystal oscillator Y1 provides a stable clock signal to the wireless communication module, ensuring that the internal circuitry of the module operates at a fixed frequency. The main control module sends mouse operation commands (such as button presses and movement data) to the wireless communication module. The internal circuitry of the module modulates these command signals and transmits them... The signal is converted into a high-frequency signal suitable for wireless transmission. Inductor L3 and capacitors C5 and C6 form an LC filter circuit to filter the modulated high-frequency signal, removing noise and interference signals to ensure the purity of the transmitted signal. Diode D1 provides electrostatic protection to prevent external static electricity from damaging the module circuit. The filtered high-frequency signal is coupled to antenna ANT1 via capacitor C7. The antenna transmits the signal as radio electromagnetic waves to achieve wireless communication with computers or other devices. At the same time, antenna ANT1 can also receive wireless signals from external devices, filter and demodulate them, and then transmit them to the main control chip U4 to complete bidirectional wireless communication.

[0032] The screen driving circuit includes a MOSFET Q3 and a transistor Q4. A resistor R70 is connected between the gate (G) and source (S) of the MOSFET Q3. The collector of the transistor Q4 is connected to the gate of the MOSFET Q3. A resistor R72 is connected between the base and emitter of the transistor Q4. A resistor R71 is connected to the junction of the base of the transistor Q4 and resistor R72. One end of resistor R71 is connected to a terminal J5, which receives screen control signals from the main control module, such as on / off and content switching commands. This signal is transmitted to the base of the transistor Q4 via resistor R71. Resistor R72 provides bias for the transistor Q4. The current ensures that the transistor operates in the appropriate amplification state, amplifying the weak control signal and enhancing its driving capability. The amplified control signal is transmitted to the gate (G) of MOSFET Q3, controlling the MOSFET's conduction and cutoff. Resistor R70 provides pull-down voltage to the gate and source (S) of MOSFET Q3, ensuring that the MOSFET is reliably cut off when there is no control signal. When the MOSFET is on, it provides operating current and driving signal to the display screen, driving the display screen to light up and display the corresponding content. When the MOSFET is off, it cuts off the power supply or driving signal to the display screen, realizing the screen being turned off or the display state switching, thereby completing precise control of the display screen.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mouse with a display screen, characterized in that: The system includes a mouse body (1), on which a display screen (2) for displaying DPI and a button module are provided. A main control board (8) is installed inside the mouse body (1). The main control board (8) integrates a main control module, a sensor module for collecting motion data, a wireless communication module for dual-mode or multi-mode communication, a screen driving circuit, and a power management module with power monitoring function. The screen driving circuit is electrically connected to the display screen (2), the button module is electrically connected to the main control module, and the wireless communication module and the sensor module are both electrically connected to the power management module.

2. A mouse with a display screen according to claim 1, characterized in that: The main control module includes a main control chip U4. A capacitor C19 is connected to ground at pin 13 of the main control chip U4. A capacitor C21 is connected to ground at pin 15 of the main control chip U4. An inductor L5 is connected between pins 16 and 17 of the main control chip U4. A capacitor C23 and a capacitor C24 are connected in parallel at pin 18 of the main control chip U4. A capacitor C22 is connected to ground at pin 19 of the main control chip U4.

3. A mouse with a display screen according to claim 2, characterized in that: The button module includes a left button (3), a right button (4), a scroll wheel (5), a DPI switch button (6), and a side function button (7). The left button (3) and the right button (4) are installed side by side on the upper part of the mouse shell. The scroll wheel (5) is located between the left button (3) and the right button (4). The DPI switch button (6) is located on one side of the scroll wheel (5). The side function button (7) is located on the side of the outer shell of the mouse body (1).

4. A mouse with a display screen according to claim 3, characterized in that: The power management module includes a charging management unit, a USB DC power supply circuit, and a step-down unit. The charging management unit and the step-down unit are electrically connected to the step-down unit and the USB DC power supply circuit, respectively. Both the step-down unit and the USB DC power supply circuit are electrically connected to the main control chip U4.

5. A mouse with a display screen according to claim 4, characterized in that: The charging management unit includes a management chip U1. Pin 1 of the management chip U1 is connected to resistors R2 and R3 for connecting to the battery. Pin 2 of the management chip U1 is connected to a resistor R1 to ground. Pin 4 of the management chip U1 is connected to a resistor R13 and a capacitor C12 to ground, which are arranged in series. Pin 5 of the management chip U1 is connected to a switching unit, which is connected to the step-down unit.

6. A mouse with a display screen according to claim 5, characterized in that: The step-down unit includes a resistor R4 for connection to the main control chip U4, and voltage regulator chips U2 and U3 connected in parallel with the resistor R4. The input pin of voltage regulator chip U2 has capacitors C8 and C10 connected in parallel to ground, and the output pin of voltage regulator chip U2 has capacitors C13 and C14 connected in parallel to ground. The input pin of voltage regulator chip U3 has capacitors C1 and C18 connected in parallel to ground, and the output pin of voltage regulator chip U3 has capacitors C4 and C15 connected in parallel to ground.

7. A mouse with a display screen according to claim 5, characterized in that: The sensor module includes an optical navigation sensor U10. Pin 1 of the optical navigation sensor U10 is connected to a light-emitting diode D7. The positive terminal of the light-emitting diode D7 is connected to a resistor R8. One end of the resistor R8 is connected to capacitors C25 and C27 in parallel. Pin 2 of the optical navigation sensor U10 is connected to capacitors C29 and C25 in parallel. Pin 3 of the optical navigation sensor U10 is connected to capacitors C30 and C31 in parallel.

8. A mouse with a display screen according to claim 7, characterized in that: The sensor module includes an encoder. Pin 1 of the encoder is connected to a resistor R54 for connection to the main control chip U4. Pin 2 of the encoder is connected in parallel with a resistor R53 and a resistor R61 for connection to the main control chip U4. Pin 3 of the encoder is connected to a resistor R52.

9. A mouse with a display screen according to claim 8, characterized in that: The wireless communication module includes a crystal oscillator Y1 connected to the main control chip U4 and an inductor L3 connected between pins 37 and 38 of the main control chip. One end of the inductor L3 is connected in parallel with a diode D1, a capacitor C5, and a capacitor C6. One end of the capacitor C6 is connected to a capacitor C7, and one end of the capacitor C7 is connected to an antenna ANT1.

10. A mouse with a display screen according to claim 9, characterized in that: The screen driving circuit includes a MOSFET Q3 and a transistor Q4. A resistor R70 is connected between the gate (G) and source (S) of the MOSFET Q3. The collector of the transistor Q4 is connected to the gate (G) of the MOSFET Q3. A resistor R72 is connected between the base and emitter of the transistor Q4. A resistor R71 is connected to the connection point between the base of the transistor Q4 and the resistor R72. One end of the resistor R71 is connected to a terminal J5.

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