PCB (Printed Circuit Board), key and keyboard containing capacitor trigger switch and capable of realizing full-key non-punching

Abstract

The invention discloses a full-key impact-free PCB (printed circuit board) containing a capacitor trigger switch, keys and a keyboard. A chip arranged on the PCB is one of a full-color control chip, a sink-color control chip, a fantasy-color control chip, a full-device control chip, a sink-device control chip, a fantasy-device control chip, a fantasy-device control chip and a sink-device control chip. One copper foil electrode on the PCB is connected with a control signal interface pin of the chip and corresponds to one key; the conductive silica gel elastic sheet is an elastic conductive conductor and plays a role in resetting the key, when the conductive silica gel elastic sheet is pressed, capacitance change is generated when the conductive silica gel elastic sheet is close to the copper foil electrode, and after the conductive silica gel elastic sheet is loosened, the elastic sheet is reset, thereby forming a capacitance trigger switch. According to the keyboard assembling technology, the full-key non-punching function is achieved, GRB indication is achieved, and the experience feeling is better. And meanwhile, the keyboard has a hot standby function, is good in reliability, can be widely applied to a scissor notebook keyboard when the circuit board is a flexible circuit board, and can be widely applied to a keyboard with a crater component when the circuit board is a hard circuit board.

Description

Technical Field

[0001] This invention relates to PCBs, and particularly to PCBs, keys, and keyboards that include capacitive trigger switches and are capable of full key rollover. Background Technology

[0002] The original membrane capacitive keyboard lacked full key rollover and GRB indicator for each key, resulting in a limited functionality. Furthermore, traditional capacitive keyboards were prone to accidental key presses, were unresponsive, and had complex wiring. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and to provide a PCB with a capacitor-triggered switch that is capable of full key rollover.

[0004] Another object of the present invention is to provide a button.

[0005] Another object of the present invention is to provide a keyboard.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A PCB with capacitive trigger switches and full key rollover capability, including the PCB body and conductive silicone springs;

[0008] The PCB body is provided with a number of chips and copper foil electrodes; one copper foil electrode corresponds to one button and is connected to the control signal interface pin of the chip; one button corresponds to one control signal interface pin, and one chip is provided with one or more control signal interface pins;

[0009] The conductive silicone spring serves as both an elastic conductive conductor and a button for resetting. When pressed, the conductive silicone spring deforms and simultaneously changes capacitance near the copper foil electrode, creating a signal conduction path. When released, the conductive silicone spring resets, breaking the path and thus forming a capacitively triggered switch.

[0010] Furthermore, the chip is a full-color chip;

[0011] The Yuquancai chip contains GRB LEDs and integrates a control signal interface circuit, a GRB color driving circuit, an address code memory, and a serial communication circuit with a single bus in series and parallel connections. It includes control signal interface pins, power supply pins, ground pins, parallel data line pins, address code input pins, and address code output pins. The power supply pin is used to power the Yuquancai chip, and the ground pin is used for signal grounding and power grounding.

[0012] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series-parallel single bus.

[0013] The address code input pins and address code output pins of n full-color chips are cascaded to form a series data line network DIN(1)-DOUT(n). The two ends of the series data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU writes the sequence bit formed by the cascaded full-color chips into the address code memory through the series data line network DIN(1)-DOUT(n) and uses it as the communication address code. The power supply pins of n full-color chips are connected in parallel to share the power supply network VCC, the ground pins are connected in parallel to share the ground network GND, and the parallel data line pins are connected in parallel to form a parallel data line network DIO, which is then connected to the MCU.

[0014] Serial-parallel single-bus serial communication circuits are used to process serial data line network information and parallel data line network information.

[0015] GRB RGB information and capacitor switch information can be transmitted on the parallel data line network DIO;

[0016] GRB RGB information and capacitor switch information can also be transmitted on the serial data line network DIN(1)-DOUT(n);

[0017] Both the parallel data line network DIO and the serial data line network DIN(1)-DOUT(n) use the serial single-bus communication protocol to transmit GRB color information and capacitor switch information, and are hot backups for each other.

[0018] Furthermore, the chip is a Yuhuicai chip;

[0019] The Yuhui Color chip contains GRB LED beads and integrates a control signal interface circuit, a GRB color driving circuit, an address code memory, and a parallel single-bus serial communication circuit; it includes control signal interface pins, power supply pins, ground pins, and parallel data line pins. The power supply pins are used to power the Yuhui Color chip, and the ground pins are used for signal grounding and power grounding.

[0020] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit.

[0021] The parallel data pins of n Yuhuicai chips are connected together to form a parallel data line network (DIO), which is then connected to the MCU; the address code of the Yuhuicai chip is written into the address code memory through an external fixture and used as the communication address code.

[0022] Parallel single-bus serial communication circuits are used to process information from parallel data line networks;

[0023] GRB RGB information and capacitor switch information are transmitted on the parallel data line network DIO;

[0024] The parallel data line network uses a serial single-bus communication protocol to transmit GRB holographic information and capacitor switch information.

[0025] Furthermore, the chip is a Yuhuancai chip;

[0026] The Yuhuancai chip contains GRB LED beads and integrates a control signal interface circuit, a GRB RGB driver circuit, and a serial single-bus serial communication circuit, including control signal interface pins, power supply pins, ground pins, serial signal input pins, and serial signal output pins; the power supply pin is used to power the Yuhuancai chip, and the ground pin is used for signal grounding and power grounding;

[0027] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus.

[0028] The serial signal input pins and serial signal output pins of n GRB chips are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU transmits GRB information and capacitor switch information to the MCU through the serial data line network DIN(1)-DOUT(n).

[0029] A serial single-bus serial communication circuit is used to process information from a serial data line network.

[0030] Both GRB RGB information and capacitor switch information are transmitted on the serial data line network DIN(1)-DOUT(n);

[0031] The serial data line network uses a serial single-bus communication protocol to transmit GRB holographic information and capacitor switch information.

[0032] Furthermore, the chip is a driver chip;

[0033] The controller chip integrates a control signal interface circuit, an address code memory, and a serial communication circuit with a single bus; it includes control signal interface pins, power supply pins, ground pins, parallel data line pins, address code input pins, and address code output pins; the power supply pins are used to power the controller chip, and the ground pins are used for signal grounding and power grounding;

[0034] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series-parallel single bus.

[0035] The address code input pins and address code output pins of n controller chips are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU writes the sequence bit formed by the cascaded controller chips into the address code memory through the serial data line network DIN(1)-DOUT(n) and uses it as the communication address code. The power supply pins of the n controller chips are connected in parallel to share the power supply network VCC, the ground pins are connected in parallel to share the ground network GND, and the parallel data line pins are connected in parallel to form a parallel data line network DIO, which is then connected to the MCU.

[0036] Serial-parallel single-bus serial communication circuits are used to process serial data line network information and parallel data line network information.

[0037] Capacitor switching information can be transmitted on the parallel data line network DIO;

[0038] Capacitor switch information can also be transmitted on the serial data line network DIN(1)-DOUT(n);

[0039] Both the parallel data line network DIO and the serial data line network DIN(1)-DOUT(n) use the serial single-bus communication protocol to transmit capacitor switch information and are hot backups for each other.

[0040] Furthermore, the chip is a driver chip;

[0041] The controller chip integrates a control signal interface circuit, an address code memory, and a parallel single-bus serial communication circuit; it includes control signal interface pins, power supply pins, ground pins, and parallel data line pins. The power supply pins are used to power the controller chip, and the ground pins are used for signal grounding and power grounding.

[0042] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit.

[0043] The parallel data pins of n controller chips are connected together to form a parallel data line network (DIO), which is then connected to the MCU. The address code of the controller chip is written into the address code memory through an external fixture and used as the communication address code.

[0044] Parallel single-bus serial communication circuits are used to process information from parallel data line networks;

[0045] Capacitor switching information is transmitted on the parallel data line network DIO;

[0046] The parallel data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0047] Furthermore, the chip is a magic-controlling chip;

[0048] The device chip integrates a control signal interface circuit and a serial single-bus serial communication circuit, including a control signal interface pin, a power supply pin, a ground pin, a serial signal input pin, and a serial signal output pin; the power supply pin is used to power the device chip, and the ground pin is used for signal grounding and power grounding.

[0049] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus.

[0050] The serial signal input pins and serial signal output pins of n control chip are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU transmits the capacitor switch information to the MCU through the serial data line network DIN(1)-DOUT(n).

[0051] A serial single-bus serial communication circuit is used to process information from a serial data line network.

[0052] Capacitor switching information is transmitted on the series data line network DIN(1)-DOUT(n);

[0053] The serial data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0054] Furthermore, the chip is a device chip for controlling virtual reality.

[0055] The Yuhuan backup chip integrates a control signal interface circuit and a serial single-bus serial communication circuit, including a control signal interface pin, a power supply pin, a ground pin, a first serial signal input pin, a first serial signal output pin, a second serial signal input pin, and a second serial signal output pin; the power supply pin is used to supply power to the Yuhuan backup chip, and the ground pin is used for signal grounding and power grounding;

[0056] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus.

[0057] The first serial signal input pin and the first serial signal output pin of n Yuhuan backup chips are cascaded to form a first serial data line network DIN1(1)-DOUT1(n). The two ends of the first serial data line network DIN1(1) and DOUT1(n) are connected to the MCU respectively. The MCU transmits the capacitor switch information to the MCU through the first serial data line network DIN1(1)-DOUT1(n).

[0058] The second serial signal input pins and second serial signal output pins of n backup chips are cascaded to form a second serial data line network DIN2(1)-DOUT2(n). The two ends of the second serial data line network DIN2(1) and DOUT2(n) are connected to the MCU respectively. The second serial data line network DIN2(1)-DOUT2(n) serves as a backup data line network for the first serial data line network DIN1(1)-DOUT1(n).

[0059] A serial single-bus serial communication circuit is used to process information from a serial data line network.

[0060] Capacitor switch information is transmitted on the first serial data line network DIN1(1)-DOUT1(n) or the second serial data line network DIN2(1)-DOUT2(n);

[0061] The serial data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0062] Furthermore, the chip is a backup chip;

[0063] The Yuhui backup chip integrates a control signal interface circuit, a parallel single-bus serial communication circuit, and an address code memory; it includes a control signal interface pin, a power supply pin, a ground pin, a first parallel data line pin, and a second parallel data line pin. The power supply pin is used to supply power to the Yuhui backup chip, and the ground pin is used for signal grounding and power grounding.

[0064] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit.

[0065] The first parallel data pins of n backup chips are connected together to form a first parallel data line network DIO1, which is then connected to the MCU; the second parallel data pins of n backup chips are connected together to form a second parallel data line network DIO2, which is then connected to the MCU. The second parallel data line network DIO2 serves as a backup data line network for the first parallel data line network DIO1; the address code of the backup chip is written into the address code memory through an external fixture and used as the communication address code.

[0066] Parallel single-bus serial communication circuits are used to process information from parallel data line networks;

[0067] Capacitor switching information is transmitted on either the first parallel data line network DIO1 or the second parallel data line network DIO2;

[0068] The parallel data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0069] Furthermore, the PCB is a rigid PCB or a flexible FPC.

[0070] Another objective of this invention is achieved through the following technical solution:

[0071] A key includes a keycap and a key pressing component. The key pressing component is a commonly used scissor-switch structure component, a crater structure component, or other press-type structural component. The keycap is assembled on the key pressing component. When the keycap is pressed down, the capacitance change between the copper foil electrode and the conductive silicone spring triggers a switch. When the keycap is released, the copper foil electrode and the conductive silicone spring reset the switch.

[0072] Another objective of this invention is achieved through the following technical solution:

[0073] A keyboard, which is manufactured using the aforementioned PCB and the aforementioned keys as its core.

[0074] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0075] 1. The full-color control chip, or color-enhancing chip, or color-enhancing chip, or color-enhancing device chip, or color-enhancing device chip, or color-enhancing backup chip, or color-enhancing backup chip used in this invention, each button has an independent control signal interface pin, with a natural full-key anti-ghosting function.

[0076] 2. This invention uses the Yuquancai chip, or the Yuhuicai chip, or the Yuhuancai chip. All of the above chips have built-in GRB LEDs for illumination, making them more convenient to use. They can perform both key functions and provide illumination, which is something that traditional keyboards simply cannot do.

[0077] 3. This invention uses a full-color chip, or a color-enhancing chip, or a holographic chip, or a full-color chip, or a color-enhancing chip, or a holographic chip, or a holographic backup chip, or a color-enhancing backup chip. It can communicate with the keyboard MCU with a maximum of 6 pins (VCC, GND, DIN1, DOUT1, DIN2, and DOUT2) and a minimum of 3 pins (VCC, DIO, and GND). It is very simple and is something that traditional keyboards simply cannot do.

[0078] 4. The overall circuit of this invention, composed of a full-color chip, a color-coordinated chip, a color-enhancing chip, a color-enhancing chip, a color-coordinated chip, a color-coordinated chip, a color-coordinated chip, a color-coordinated chip, a color-coordinated chip, a color-coordinated backup chip, or a color-coordinated backup chip, is simpler. The MCU with USB function can be externally placed at the wire end, making the heart of the keyboard (MCU) less susceptible to contamination by external liquids and dust. The MCU has good reliability, and the reliability and stability of the keyboard are further enhanced.

[0079] 5. This invention uses the Yuquancai chip or Yuquanqi chip as a serial communication circuit with series and parallel connections. The series and parallel connections serve as hot backups for each other. This hot backup is not a simple repetitive dual-serial hot backup, nor is it the same as a simple dual-parallel hot backup. The series and parallel hot backup has stronger complementarity, better hot backup effect, and more stable performance.

[0080] 6. This invention uses a full-color chip or a full-process chip to write code, which can be completed by the serial data network formed by the cascading of the chips themselves. It does not require any external fixtures, which simplifies the process, improves reliability and stability, and reduces manufacturing costs.

[0081] 7. The Yuhuan backup chip and Yuhui backup chip used in this invention are also equipped with backup data lines, which is a redundant design, resulting in high system stability and less likelihood of generating maintenance work orders.

[0082] 8. Each of the external control I / O ports of the chip described in this invention corresponds to one button, preferably one chip per button. This results in shorter traces, less susceptibility to external interference, more stable capacitance changes, and higher button reliability.

[0083] 9. The keyboard keys of this invention are only activated when pressed, which has strong anti-accidental touch capability and greatly reduces the probability of accidental touch.

[0084] 10. The keyboard keys of this invention have realistic tactile feedback, retaining the travel and rebound of traditional keys, and the user experience is significantly better than that of tactile capacitive keys, providing a sense of confirmation upon pressing.

[0085] 11. The keyboard of this invention has excellent waterproof performance, which can achieve the sealing of the whole machine, allowing the outer key to remain completely undamaged, and the internal pressing structure to trigger the change of capacitance.

[0086] 12. The keyboard of this invention has a larger capacitance variation, a more stable signal, and a more significant change brought about by the pressing action: the contact area is increased, the electric field coupling is enhanced, the sensitivity is more consistent, it is less sensitive to differences in fingers, and it is easier to trigger when wearing gloves. Attached Figure Description

[0087] Figure 1 This is a functional diagram of the full-color chip described in Embodiment 1 of the present invention.

[0088] Figure 2 This is an electrical connection diagram of the full-color chip and copper foil electrode (without conductive silicone spring) described in Embodiment 1 of the present invention.

[0089] Figure 3 This is an electrical connection diagram of the full-color chip and copper foil electrode (without conductive silicone spring) described in embodiment 1 of the present invention.

[0090] Figure 4 This is an electrical connection diagram of the full-color chip and copper foil electrode (with conductive silicone spring) described in Embodiment 1 of the present invention.

[0091] Figure 5 This is a schematic diagram of the overall structure of the PCB (without conductive silicone spring) described in this invention.

[0092] Figure 6 for Figure 5 A magnified view of a portion of region A.

[0093] Figure 7 This is a schematic diagram of the overall structure of the PCB (with conductive silicone spring) described in this invention.

[0094] Figure 8 for Figure 7 A magnified view of a portion of region B.

[0095] Figure 9 This is a schematic diagram of the structure of the conductive silicone spring sheet and copper foil electrode described in this invention.

[0096] Figure 10 This is a functional diagram of the Yuhuicai chip described in Embodiment 2 of the present invention.

[0097] Figure 11 This is a functional diagram of the iridescent chip described in Embodiment 3 of the present invention.

[0098] Figure 12 This is a functional diagram of the controller chip described in Embodiment 4 of the present invention.

[0099] Figure 13 This is a functional diagram of the controller chip described in Embodiment 5 of the present invention.

[0100] Figure 14 This is a functional diagram of the device chip described in Embodiment 6 of the present invention.

[0101] Figure 15 This is a functional diagram of the Yuhuan Backup Chip described in Embodiment 7 of the present invention.

[0102] Figure 16 This is a functional diagram of the backup chip described in Embodiment 8 of the present invention.

[0103] The meanings of the reference numerals in the attached figures are as follows:

[0104] 1-PCB, 2-Copper foil electrode, 3-Chip, 4-Conductive silicone spring. Detailed Implementation

[0105] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0106] Example 1

[0107] A PCB with a capacitively triggered switch and full key rollover capability, comprising PCB1 body and conductive silicone spring 4;

[0108] like Figures 5 to 8 The PCB1 body is provided with a plurality of chips 3 and copper foil electrodes 2; for example Figure 9 Each copper foil electrode 2 is provided with a corresponding button and is connected to the control signal interface pin of the chip 3;

[0109] The conductive silicone spring 4 serves as both an elastic conductive conductor and a button for resetting. When the conductive silicone spring 4 is pressed, it deforms and simultaneously changes capacitance near the copper foil electrode 2, thus creating a signal conduction path. When released, the conductive silicone spring 4 resets, breaking the path and forming a capacitively triggered switch.

[0110] The PCB1 is either a rigid PCB or a flexible FPC.

[0111] like Figure 1 The chip is a Yuquancai chip; the Yuquancai chip contains GRB LED beads and integrates a control signal interface circuit, a GRB color driving circuit, an address code memory, and a serial communication circuit with a single bus; it includes control signal interface pins, power supply pins, ground pins, parallel data line pins, address code input pins, and address code output pins; the power supply pin is used to supply power to the Yuquancai chip, and the ground pin is used for signal grounding and power grounding;

[0112] like Figure 2 and Figure 4 The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitor change and connecting them to the serial communication circuit of the series-parallel single bus.

[0113] like Figure 3 n full-color chips are electrically connected to copper foil electrodes; the address code input pins and address code output pins of the n full-color chips are cascaded to form a series data line network DIN(1)-DOUT(n). The two ends of the series data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU writes the sequence bit formed by the cascaded full-color chips into the address code memory through the series data line network DIN(1)-DOUT(n) and uses it as the communication address code; the power supply pins of the n full-color chips are connected in parallel to share the power supply network VCC, the ground pins are connected in parallel to share the ground network GND, and the parallel data line pins are connected in parallel to form a parallel data line network DIO, which is then connected to the MCU;

[0114] Serial-parallel single-bus serial communication circuits are used to process serial data line network information and parallel data line network information.

[0115] GRB RGB information and capacitor switch information can be transmitted on the parallel data line network DIO;

[0116] GRB RGB information and capacitor switch information can also be transmitted on the serial data line network DIN(1)-DOUT(n);

[0117] Both the parallel data line network DIO and the serial data line network DIN(1)-DOUT(n) use the serial single-bus communication protocol to transmit GRB color information and capacitor switch information, and are hot backups for each other.

[0118] like Figures 2 to 4 To minimize external interference to the copper foil electrode 2 on the PCB, both the copper foil electrode 2 and its traces are surrounded by ground on the same layer. This design also allows for single-sided double-sided copper foil, with the copper foil electrode 2 on the top layer and a solid ground copper foil on the bottom layer. This parallel board structure with a thin dielectric layer and an opposing ground plane achieves closed-loop optimization in terms of return path, noise figure, parasitic parameters, and mechanical adaptation, providing a stabilizing effect on the ground plane. The sensing threshold is easier to calibrate, resulting in better reliability and consistency.

[0119] Example 2

[0120] Example 2 is identical to Example 1 except for the following content:

[0121] like Figure 10 The chip is a Yuhuicai chip; the Yuhuicai chip contains GRB LED beads and integrates a control signal interface circuit, a GRB color driving circuit, an address code memory, and a parallel single-bus serial communication circuit; it includes control signal interface pins, power supply pins, ground pins, and parallel data line pins. The power supply pins are used to supply power to the Yuhuicai chip, and the ground pins are used for signal grounding and power grounding.

[0122] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit.

[0123] The parallel data pins of n Yuhuicai chips are connected together to form a parallel data line network (DIO), which is then connected to the MCU; the address code of the Yuhuicai chip is written into the address code memory through an external fixture and used as the communication address code.

[0124] Parallel single-bus serial communication circuits are used to process information from parallel data line networks;

[0125] GRB RGB information and capacitor switch information are transmitted on the parallel data line network DIO;

[0126] The parallel data line network uses a serial single-bus communication protocol to transmit GRB holographic information and capacitor switch information.

[0127] Example 3

[0128] Example 3 is identical to Example 1 except for the following content:

[0129] like Figure 11 The chip is a Yuhuancai chip; the Yuhuancai chip contains GRB LED beads and integrates a control signal interface circuit, a GRB RGB driving circuit, and a serial single-bus serial communication circuit, including a control signal interface pin, a power supply pin, a ground pin, a serial signal input pin, and a serial signal output pin; the power supply pin is used to supply power to the Yuhuancai chip, and the ground pin is used for signal grounding and power grounding;

[0130] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus.

[0131] The serial signal input pins and serial signal output pins of n GRB chips are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU transmits GRB information and capacitor switch information to the MCU through the serial data line network DIN(1)-DOUT(n).

[0132] A serial single-bus serial communication circuit is used to process information from a serial data line network.

[0133] Both GRB RGB information and capacitor switch information are transmitted on the serial data line network DIN(1)-DOUT(n);

[0134] The serial data line network uses a serial single-bus communication protocol to transmit GRB holographic information and capacitor switch information.

[0135] Example 4

[0136] Example 4 is identical to Example 1 except for the following content:

[0137] like Figure 12 The chip is a driver chip; the driver chip integrates a control signal interface circuit, an address code memory, and a serial communication circuit with a single bus; it includes control signal interface pins, power supply pins, ground pins, parallel data line pins, address code input pins, and address code output pins; the power supply pin is used to supply power to the driver chip, and the ground pin is used for signal grounding and power grounding;

[0138] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series-parallel single bus.

[0139] The address code input pins and address code output pins of n controller chips are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU writes the sequence bit formed by the cascaded controller chips into the address code memory through the serial data line network DIN(1)-DOUT(n) and uses it as the communication address code. The power supply pins of the n controller chips are connected in parallel to share the power supply network VCC, the ground pins are connected in parallel to share the ground network GND, and the parallel data line pins are connected in parallel to form a parallel data line network DIO, which is then connected to the MCU.

[0140] Serial-parallel single-bus serial communication circuits are used to process serial data line network information and parallel data line network information.

[0141] Capacitor switching information can be transmitted on the parallel data line network DIO;

[0142] Capacitor switch information can also be transmitted on the serial data line network DIN(1)-DOUT(n);

[0143] Both the parallel data line network DIO and the serial data line network DIN(1)-DOUT(n) use the serial single-bus communication protocol to transmit capacitor switch information and are hot backups for each other.

[0144] Example 5

[0145] Example 5 is identical to Example 1 except for the following content:

[0146] like Figure 13 The chip is a controller chip; the controller chip integrates a control signal interface circuit, an address code memory, and a parallel single-bus serial communication circuit; it includes control signal interface pins, power supply pins, ground pins, and parallel data line pins. The power supply pins are used to supply power to the controller chip, and the ground pins are used for signal grounding and power grounding.

[0147] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit.

[0148] The parallel data pins of n controller chips are connected together to form a parallel data line network (DIO), which is then connected to the MCU. The address code of the controller chip is written into the address code memory through an external fixture and used as the communication address code.

[0149] Parallel single-bus serial communication circuits are used to process information from parallel data line networks;

[0150] Capacitor switching information is transmitted on the parallel data line network DIO;

[0151] The parallel data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0152] Example 6

[0153] Example 6 is identical to Example 1 except for the following content:

[0154] like Figure 14 The chip is a magic controller chip; the magic controller chip integrates a control signal interface circuit and a serial single-bus serial communication circuit, including a control signal interface pin, a power supply pin, a ground pin, a serial signal input pin, and a serial signal output pin; the power supply pin is used to supply power to the magic controller chip, and the ground pin is used for signal grounding and power grounding;

[0155] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus.

[0156] The serial signal input pins and serial signal output pins of n control chip are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU transmits the capacitor switch information to the MCU through the serial data line network DIN(1)-DOUT(n).

[0157] A serial single-bus serial communication circuit is used to process information from a serial data line network.

[0158] Capacitor switching information is transmitted on the series data line network DIN(1)-DOUT(n);

[0159] The serial data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0160] Example 7

[0161] Example 7 is identical to Example 1 except for the following content:

[0162] like Figure 15The chip is a Yuhuan backup chip; the Yuhuan backup chip integrates a control signal interface circuit and a serial single-bus serial communication circuit, including a control signal interface pin, a power supply pin, a ground pin, a first serial signal input pin, a first serial signal output pin, a second serial signal input pin, and a second serial signal output pin; the power supply pin is used to supply power to the Yuhuan backup chip, and the ground pin is used for signal grounding and power grounding;

[0163] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus.

[0164] The first serial signal input pin and the first serial signal output pin of n Yuhuan backup chips are cascaded to form a first serial data line network DIN1(1)-DOUT1(n). The two ends of the first serial data line network DIN1(1) and DOUT1(n) are connected to the MCU respectively. The MCU transmits the capacitor switch information to the MCU through the first serial data line network DIN1(1)-DOUT1(n).

[0165] The second serial signal input pins and second serial signal output pins of n backup chips are cascaded to form a second serial data line network DIN2(1)-DOUT2(n). The two ends of the second serial data line network DIN2(1) and DOUT2(n) are connected to the MCU respectively. The second serial data line network DIN2(1)-DOUT2(n) serves as a backup data line network for the first serial data line network DIN1(1)-DOUT1(n).

[0166] A serial single-bus serial communication circuit is used to process information from a serial data line network.

[0167] Capacitor switch information is transmitted on the first serial data line network DIN1(1)-DOUT1(n) or the second serial data line network DIN2(1)-DOUT2(n);

[0168] The serial data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0169] Example 8

[0170] Example 8 is identical to Example 1 except for the following content:

[0171] like Figure 16The chip is a Yuhui backup chip; the Yuhui backup chip integrates a control signal interface circuit, a parallel single-bus serial communication circuit, and an address code memory; it includes a control signal interface pin, a power supply pin, a ground pin, a first parallel data line pin, and a second parallel data line pin. The power supply pin is used to supply power to the Yuhui backup chip, and the ground pin is used for signal grounding and power grounding.

[0172] The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit.

[0173] The first parallel data pins of n backup chips are connected together to form a first parallel data line network DIO1, which is then connected to the MCU; the second parallel data pins of n backup chips are connected together to form a second parallel data line network DIO2, which is then connected to the MCU. The second parallel data line network DIO2 serves as a backup data line network for the first parallel data line network DIO1; the address code of the backup chip is written into the address code memory through an external fixture and used as the communication address code.

[0174] Parallel single-bus serial communication circuits are used to process information from parallel data line networks;

[0175] Capacitor switching information is transmitted on either the first parallel data line network DIO1 or the second parallel data line network DIO2;

[0176] The parallel data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

[0177] This invention also provides:

[0178] A key includes a keycap and a key pressing component. The key pressing component is a commonly used scissor-switch structure component, a crater structure component, or other press-type structural component. The keycap is assembled on the key pressing component. When the keycap is pressed down, the capacitance change between the copper foil electrode and the conductive silicone spring triggers a switch. When the keycap is released, the copper foil electrode and the conductive silicone spring reset the switch.

[0179] A keyboard, which is manufactured using the aforementioned PCB and the aforementioned keys as its core.

[0180] The chip in Example 4 is a controller chip, the chip in Example 5 is a converging chip, the chip in Example 6 is a magic chip, the chip in Example 7 is a magic backup chip, and the chip in Example 8 is a converging backup chip. A PCB is provided with any one of the chips in Examples 4 to 8. A light guide plate can also be provided below the PCB. The light guide plate can provide a light source for the keyboard as a backlight.

[0181] In Examples 1 to 8, it should be noted that in the same electrical system, all networks with the same name (such as VCC, GND, DIO, DIN, DOUT, DIN1, DOUT1, DIN2, DOUT2, DIO1, DIO2) are connected together in terms of electrical characteristics.

[0182] In the above embodiments, one button corresponds to one control signal interface pin, and one chip can be configured with one control signal interface pin or more than two control signal interface pins.

[0183] For example, if the chip on the PCB is set to one of the following: Full Color Chip, Full Color Chip, or Full Color Chip, in order to implement the GRB color function, one chip needs to be set to one control signal interface pin, that is, one chip corresponds to only one button. If the Full Color Chip, Full Color Chip, or Full Color Chip corresponds to multiple buttons, it can still be used, but the GRB color function of each button cannot be implemented.

[0184] For example, when the chip on the PCB is set to one of the following: control chip, control converging chip, control illusion chip, control illusion backup chip, or control converging backup chip, a chip can be set with more than two control signal interface pins, or it can be set with only one control signal interface pin.

[0185] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A PCB containing a capacitor-triggered switch and capable of full key rollover, characterized in that, Includes the PCB body and conductive silicone springs; The PCB body is provided with a number of chips and copper foil electrodes; one copper foil electrode corresponds to one button and is connected to the control signal interface pin of the chip; one button corresponds to one control signal interface pin, and one chip is provided with one or more control signal interface pins; The conductive silicone spring serves as both an elastic conductive conductor and a button for resetting. When pressed, the conductive silicone spring deforms and simultaneously changes capacitance near the copper foil electrode, creating a signal conduction path. When released, the conductive silicone spring resets, breaking the path and thus forming a capacitively triggered switch.

2. The PCB with a capacitor-triggered switch and full key rollover capability as described in claim 1, characterized in that, The chip in question is a full-color chip; The full-color chip contains GRB LEDs and integrates a control signal interface circuit, a GRB color driving circuit, an address code memory, and a serial communication circuit with a single bus; it includes control signal interface pins, power supply pins, ground pins, parallel data line pins, address code input pins, and address code output pins. The power pin is used to power the full-color chip, and the ground pin is used for signal grounding and power grounding. The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series-parallel single bus. The address code input pins and address code output pins of n full-color chips are cascaded to form a series data line network DIN(1)-DOUT(n). The two ends of the series data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU writes the sequence bit formed by the cascaded full-color chips into the address code memory through the series data line network DIN(1)-DOUT(n) and uses it as the communication address code. The power supply pins of n full-color chips are connected in parallel to share the power supply network VCC, the ground pins are connected in parallel to share the ground network GND, and the parallel data line pins are connected in parallel to form a parallel data line network DIO, which is then connected to the MCU. Serial-parallel single-bus serial communication circuits are used to process serial data line network information and parallel data line network information. GRB RGB information and capacitor switch information can be transmitted on the parallel data line network DIO; GRB RGB information and capacitor switch information can also be transmitted on the serial data line network DIN(1)-DOUT(n); Both the parallel data line network DIO and the serial data line network DIN(1)-DOUT(n) use the serial single-bus communication protocol to transmit GRB color information and capacitor switch information, and are hot backups for each other.

3. The PCB with a capacitor-triggered switch and full key rollover capability as described in claim 1, characterized in that, The chip in question is a Yuhuicai chip; The Yuhui Color chip contains GRB LED beads and integrates a control signal interface circuit, a GRB color driving circuit, an address code memory, and a parallel single-bus serial communication circuit; it includes control signal interface pins, power supply pins, ground pins, and parallel data line pins. The power supply pins are used to power the Yuhui Color chip, and the ground pins are used for signal grounding and power grounding. The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit. The parallel data pins of n Yuhuicai chips are connected together to form a parallel data line network (DIO), which is then connected to the MCU; the address code of the Yuhuicai chip is written into the address code memory through an external fixture and used as the communication address code. Parallel single-bus serial communication circuits are used to process information from parallel data line networks; GRB RGB information and capacitor switch information are transmitted on the parallel data line network DIO; The parallel data line network uses a serial single-bus communication protocol to transmit GRB holographic information and capacitor switch information.

4. The PCB with a capacitor-triggered switch and full key rollover capability as described in claim 1, characterized in that, The chip in question is the Yuhuancai chip; The Yuhuancai chip contains GRB LED beads and integrates a control signal interface circuit, a GRB Huancai driver circuit, and a serial single-bus serial communication circuit, including control signal interface pins, power supply pins, ground pins, serial signal input pins, and serial signal output pins. The power pin is used to supply power to the Yuhuancai chip, and the ground pin is used for signal grounding and power grounding. The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus. The serial signal input pins and serial signal output pins of n GRB chips are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU transmits GRB information and capacitor switch information to the MCU through the serial data line network DIN(1)-DOUT(n). A serial single-bus serial communication circuit is used to process information from a serial data line network. Both GRB RGB information and capacitor switch information are transmitted on the serial data line network DIN(1)-DOUT(n); The serial data line network uses a serial single-bus communication protocol to transmit GRB holographic information and capacitor switch information.

5. The PCB with a capacitor-triggered switch and full key rollover capability as described in claim 1, characterized in that, The chip is a driver chip; The controller chip integrates a control signal interface circuit, an address code memory, and a serial communication circuit with a single bus; it includes control signal interface pins, power supply pins, ground pins, parallel data line pins, address code input pins, and address code output pins. The power pin is used to supply power to the controller chip, and the ground pin is used for signal grounding and power grounding. The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series-parallel single bus. The address code input pins and address code output pins of n controller chips are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU writes the sequence bit formed by the cascaded controller chips into the address code memory through the serial data line network DIN(1)-DOUT(n) and uses it as the communication address code. The power supply pins of the n controller chips are connected in parallel to share the power supply network VCC, the ground pins are connected in parallel to share the ground network GND, and the parallel data line pins are connected in parallel to form a parallel data line network DIO, which is then connected to the MCU. Serial-parallel single-bus serial communication circuits are used to process serial data line network information and parallel data line network information. Capacitor switching information can be transmitted on the parallel data line network DIO; Capacitor switch information can also be transmitted on the serial data line network DIN(1)-DOUT(n); Both the parallel data line network DIO and the serial data line network DIN(1)-DOUT(n) use the serial single-bus communication protocol to transmit capacitor switch information and are hot backups for each other.

6. The PCB with a capacitor-triggered switch and full key rollover capability according to claim 1, characterized in that, The chip is a driver chip; The controller chip integrates a control signal interface circuit, an address code memory, and a parallel single-bus serial communication circuit; it includes control signal interface pins, power supply pins, ground pins, and parallel data line pins. The power supply pins are used to power the controller chip, and the ground pins are used for signal grounding and power grounding. The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit. The parallel data pins of n controller chips are connected together to form a parallel data line network (DIO), which is then connected to the MCU. The address code of the controller chip is written into the address code memory through an external fixture and used as the communication address code. Parallel single-bus serial communication circuits are used to process information from parallel data line networks; Capacitor switching information is transmitted on the parallel data line network DIO; The parallel data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

7. The PCB with a capacitor-triggered switch and full key rollover capability according to claim 1, characterized in that, The chip is a magic-controlling chip; The device chip integrates a control signal interface circuit and a serial single-bus serial communication circuit, including a control signal interface pin, a power supply pin, a ground pin, a serial signal input pin, and a serial signal output pin; the power supply pin is used to power the device chip, and the ground pin is used for signal grounding and power grounding; The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus. The serial signal input pins and serial signal output pins of n control chip are cascaded to form a serial data line network DIN(1)-DOUT(n). The two ends of the serial data line network DIN(1) and DOUT(n) are connected to the MCU respectively. The MCU transmits the capacitor switch information to the MCU through the serial data line network DIN(1)-DOUT(n). A serial single-bus serial communication circuit is used to process information from a serial data line network. Capacitor switch information is transmitted on the series data line network DIN(1)-DOUT(n); The serial data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

8. The PCB with a capacitor-triggered switch and full key rollover capability as described in claim 1, characterized in that, The chip is a Yuhuan backup chip; The Yuhuan backup chip integrates a control signal interface circuit and a serial single-bus serial communication circuit, including a control signal interface pin, a power supply pin, a ground pin, a first serial signal input pin, a first serial signal output pin, a second serial signal input pin, and a second serial signal output pin; the power supply pin is used to supply power to the Yuhuan backup chip, and the ground pin is used for signal grounding and power grounding; The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the serial communication circuit of the series single bus. The first serial signal input pin and the first serial signal output pin of n Yuhuan backup chips are cascaded to form a first serial data line network DIN1(1)-DOUT1(n). The two ends of the first serial data line network DIN1(1) and DOUT1(n) are connected to the MCU respectively. The MCU transmits the capacitor switch information to the MCU through the first serial data line network DIN1(1)-DOUT1(n). The second serial signal input pins and second serial signal output pins of n backup chips are cascaded to form a second serial data line network DIN2(1)-DOUT2(n). The two ends of the second serial data line network DIN2(1) and DOUT2(n) are connected to the MCU respectively. The second serial data line network DIN2(1)-DOUT2(n) serves as a backup data line network for the first serial data line network DIN1(1)-DOUT1(n). A serial single-bus serial communication circuit is used to process information from a serial data line network. Capacitor switch information is transmitted on the first serial data line network DIN1(1)-DOUT1(n) or the second serial data line network DIN2(1)-DOUT2(n); The serial data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

9. The PCB with a capacitor-triggered switch and full key rollover capability according to claim 1, characterized in that, The chip is a Yuhui backup chip; The Yuhui backup chip integrates a control signal interface circuit, a parallel single-bus serial communication circuit, and an address code memory; it includes a control signal interface pin, a power supply pin, a ground pin, a first parallel data line pin, and a second parallel data line pin. The power supply pin is used to supply power to the Yuhui backup chip, and the ground pin is used for signal grounding and power grounding. The control signal interface pins are connected to the copper foil electrodes of the PCB for communication. The control signal interface circuit is responsible for processing the capacitor switching signals generated by the capacitance change and connecting them to the parallel single-bus serial communication circuit. The first parallel data pins of n backup chips are connected together to form a first parallel data line network DIO1, which is then connected to the MCU; the second parallel data pins of n backup chips are connected together to form a second parallel data line network DIO2, which is then connected to the MCU. The second parallel data line network DIO2 serves as a backup data line network for the first parallel data line network DIO1; the address code of the backup chip is written into the address code memory through an external fixture and used as the communication address code. Parallel single-bus serial communication circuits are used to process information from parallel data line networks; Capacitor switching information is transmitted on either the first parallel data line network DIO1 or the second parallel data line network DIO2; The parallel data line network uses a serial single-bus communication protocol to transmit capacitor switch information.

10. The PCB with a capacitor-triggered switch and full key rollover capability according to claim 1, characterized in that, The PCB is either a rigid PCB or a flexible FPC.

11. A button, characterized in that, The device includes a keycap and a key pressing component. The key pressing component is a commonly used scissor-switch structure component, a crater structure component, or other pressing structure component. The keycap is assembled on the key pressing component. When the keycap is pressed down, the copper foil electrode and the conductive silicone spring of claim 1 generate a capacitance change to trigger the switch. When the keycap is released, the copper foil electrode and the conductive silicone spring reset the switch.

12. A keyboard, characterized in that, A keyboard manufactured using the PCB described in claims 1 to 10 and the key described in claim 11 as its core.

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