Serial system based on touch panel with built-in pressure function

Abstract

The utility model relates to the technical field of communication, and discloses a serial system based on a built-in pressure function touchpad, which comprises a host unit and a touchpad unit, and the touchpad unit is connected with the host unit through a first wired interface; wherein the touch panel unit comprises a touch module and a pressure module, the touch module and the pressure module are connected through a second wired interface, the pressure module is composed of a plurality of pressure sensors, the touch module is composed of a touch chip and a touch matrix, and the touch chip is electrically connected with the touch matrix. According to the utility model, the touch module is adopted as a bridge between the pressure module and the host unit, corresponding pressure signals are forwarded in batches, and the installation of a specific equipment program driver and the addition of a data signature on the host unit can be effectively avoided, so that the host unit communicates with the pressure module in real time through the touch module, and the real-time communication between the host unit and the pressure module is realized. And thus, the data communication efficiency between the host unit and the NFC module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of communication, in particular to a serial system based on a touch panel with built-in pressure function. Background Art

[0002] In current electronic devices, touchpad technology has become a common input method, widely used in smart phones, tablets, laptops and other devices. The touchpad can not only identify the user's touch position, but also execute a variety of commands through different touch gestures. However, traditional touchpads can usually only process two-dimensional information of surface touch, and lack effective response and processing capabilities for the pressure level applied to the touchpad.

[0003] In order to improve the naturalness and efficiency of user interaction, some touchpads with pressure sensing capabilities have appeared on the market. They can trigger different operations based on the strength of the user's pressure, thereby enhancing the diversity and depth of interaction of the user interface. However, these systems often have problems such as slow response speed, low pressure resolution and high cost. Therefore, it is particularly important to develop a new touchpad system based on built-in pressure function. Utility Model Content

[0004] In view of the problems in the related art, the utility model proposes a serial system based on a touch panel with built-in pressure function to overcome the above technical problems existing in the existing related art.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] According to one aspect of the present invention, a serial system based on a touch panel with built-in pressure function is provided, comprising a host unit and a touch panel unit, and the touch panel unit and the host unit are connected via a first wired interface; wherein the touch panel unit comprises a touch module and a pressure module, and the touch module and the pressure module are connected via a second wired interface, and the pressure module is composed of a plurality of pressure sensors. The touch module is composed of a touch chip and a touch matrix, and the touch chip is electrically connected to the touch matrix. The model of the touch chip is CST3340.

[0007] According to another aspect of the present invention, a serial system based on a touch panel with built-in pressure function is also provided, including a host unit and a touch panel unit, and the touch panel unit is connected to the host unit through a first wired interface; wherein the touch panel unit includes a touch module and a pressure module, and the touch module and the pressure module are connected through a second wired interface; the pressure module is composed of a pressure chip and a plurality of pressure sensors, and the plurality of pressure sensors are electrically connected to the pressure chip. The touch module is composed of a touch chip and a touch matrix, and the touch chip is electrically connected to the touch matrix. The model of the touch chip is PCT1336U, and the model of the pressure chip is CDS8712.

[0008] Furthermore, the twelfth pin of the touch chip is connected to one end of the capacitor C15, and the other end of the capacitor C15 is grounded; the thirteenth pin of the touch chip is connected to one end of the capacitor C19, and the other end of the capacitor C19 is grounded; the twenty-fifth pin of the touch chip is connected to the positive electrode of the diode D2, the twenty-sixth pin of the touch chip is respectively connected to one end of the capacitor C13, one end of the resistor R9 and the twenty-seventh pin of the touch chip, and the other end of the capacitor C13 is grounded; the thirty-second pin of the touch chip is connected to one end of the resistor R8, the other end of the resistor R8 is connected to one end of the resistor R7, and the other end of the resistor R7 is connected to the thirty-third pin of the touch chip; the thirty-sixth pin of the touch chip is connected to the diode D1.

[0009] Further, the first pin of the pressure chip is connected to one end of the diode C27, the other end of the diode C27 is grounded, the thirteenth pin of the pressure chip is connected to one end of the resistor R18, the other end of the resistor R18 is respectively connected to one end of the resistor R19, one end of the resistor R17, one end of the resistor R16 and one end of the resistor R22; the fourteenth pin of the pressure chip is connected to the other end of the resistor R19, the fifteenth pin of the pressure chip is connected to one end of the resistor R20, the other end of the resistor R20 is connected to one end of the resistor R21; the sixteenth pin of the pressure chip is connected to one end of the resistor R27, the seventeenth pin of the pressure chip is connected to one end of the resistor R26, and the nineteenth pin of the pressure chip is connected to one end of the resistor R29 The other end of the resistor R29 is connected to the other end of the resistor R22; the 20th pin of the pressure chip is respectively connected to one end of the capacitor C25 and one end of the capacitor C23, the other end of the capacitor C25 is respectively connected to the other end of the capacitor C23 and one end of the capacitor C21, the other end of the capacitor C21 is respectively connected to the other end of the resistor R21 and the 21st pin of the pressure chip; the 22nd pin of the pressure chip is connected to the other end of the resistor R16, and the 23rd pin of the pressure chip is connected to the other end of the resistor R17; the 24th pin of the pressure chip is respectively connected to one end of the capacitor C26, one end of the capacitor C24 and one end of the resistor R24, the other end of the capacitor C26 is connected to the other end of the capacitor C24 and grounded.

[0010] Compared with the prior art, the utility model provides a serial system based on a touch panel with built-in pressure function, which has the following beneficial effects:

[0011] The utility model uses a touch module as a bridge between the pressure module and the host unit, and forwards the corresponding pressure signals in batches, which can effectively avoid installing a specific device program driver and adding a data signature on the host unit, so that the host unit can communicate with the pressure module in real time through the touch module, thereby improving the data communication efficiency between the host unit and the NFC module. In addition, the utility model can also be applied to a combination of n (n is an integer greater than or equal to 1) pressure sensors (either digital or analog output). BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0013] Figure 1 It is a structural block diagram of a serial system based on a touch panel with built-in pressure function according to an embodiment of the utility model;

[0014] Figure 2 is a structural block diagram of a serial system based on a touch panel with built-in pressure function according to another embodiment of the utility model;

[0015] Figure 3 It is a circuit diagram of a touch chip and a touch matrix in a serial system based on a touch panel with built-in pressure function according to another embodiment of the utility model;

[0016] Figure 4 It is a circuit diagram of a pressure chip and a pressure sensor in a serial system based on a touch panel with built-in pressure function according to another embodiment of the utility model.

[0017] In the figure:

[0018] 1. Host unit; 2. Touch panel unit; 21. Touch module; 211. Touch chip; 212. Touch matrix; 22. Pressure module; 221. Pressure sensor; 222. Pressure chip. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] According to an embodiment of the utility model, a serial system based on a touch panel with built-in pressure function is provided.

[0021] Example 1

[0022] like Figure 1 As shown, a serial system based on a touch panel with built-in pressure function is provided, comprising a host unit 1 and a touch panel unit 2, and the touch panel unit 2 is connected to the host unit 1 via a first wired interface;

[0023] Among them, the touch panel unit 2 includes a touch module 21 and a pressure module 22, and the touch module 21 and the pressure module 22 are connected through a second wired interface, the host unit 1 communicates with the pressure module 22 through a first wired interface, and the pressure module 22 is composed of a plurality of pressure sensors 221. The touch module 21 is composed of a touch chip 211 and a touch matrix 212, and the touch chip 211 is electrically connected to the touch matrix 212, and the model of the touch chip 211 is CST3340. Specifically, the host unit 1 in this embodiment is a computer host, and the touch signal is transmitted to the computer (host) through HIDI2C, and the pressure signal is also transmitted to the host through the touch IC (i.e., the touch chip); the pressure sensors are all made into devices that can be reflow soldered (SMT), so the pressure sensors are directly soldered on the PCB, i.e., the touch panel, like chips.

[0024] Example 2

[0025] like Figure 2-Figure 4 As shown, a serial system based on a touch panel with built-in pressure function is provided, comprising a host unit 1 and a touch panel unit 2, and the touch panel unit 2 is connected to the host unit 1 via a first wired interface;

[0026] The touch panel unit 2 includes a touch module 21 and a pressure module 22, and the touch module 21 and the pressure module 22 are connected via a second wired interface, and the host unit 1 communicates with the pressure module 22 via a first wired interface; the pressure module 22 is composed of a pressure chip 222 and a plurality of pressure sensors 221, and the plurality of pressure sensors 221 are electrically connected to the pressure chip 221. The touch module 21 is composed of a touch chip 211 and a touch matrix 212, and the touch chip 211 is electrically connected to the touch matrix 212. The model of the touch chip 211 is PCT1336U, and the model of the pressure chip 221 is CDS8712.

[0027] The twelfth pin of the touch chip 211 is connected to one end of the capacitor C15, and the other end of the capacitor C15 is grounded. The thirteenth pin of the touch chip 211 is connected to one end of the capacitor C19, and the other end of the capacitor C19 is grounded. The twenty-fifth pin of the touch chip 211 is connected to the positive electrode of the diode D2. The twenty-sixth pin of the touch chip 211 is respectively connected to one end of the capacitor C13, one end of the resistor R9 and the twenty-seventh pin of the touch chip 211, and the other end of the capacitor C13 is grounded. The thirty-second pin of the touch chip 211 is connected to one end of the resistor R8, the other end of the resistor R8 is connected to one end of the resistor R7, and the other end of the resistor R7 is connected to the thirty-third pin of the touch chip 211. The thirty-sixth pin of the touch chip 211 is connected to the diode D1.

[0028] The first pin of the pressure chip 222 is connected to one end of the diode C27, the other end of the diode C27 is grounded, the thirteenth pin of the pressure chip 222 is connected to one end of the resistor R18, the other end of the resistor R18 is respectively connected to one end of the resistor R19, one end of the resistor R17, one end of the resistor R16 and one end of the resistor R22; the fourteenth pin of the pressure chip 222 is connected to the other end of the resistor R19, the fifteenth pin of the pressure chip 222 is connected to one end of the resistor R20, the other end of the resistor R20 is connected to one end of the resistor R21; the sixteenth pin of the pressure chip 222 is connected to one end of the resistor R27, the seventeenth pin of the pressure chip 222 is connected to one end of the resistor R26, the nineteenth pin of the pressure chip 222 is connected to one end of the resistor R29 The other end of the resistor R29 is connected to the other end of the resistor R22; the 20th pin of the pressure chip 222 is respectively connected to one end of the capacitor C25 and one end of the capacitor C23, the other end of the capacitor C25 is respectively connected to the other end of the capacitor C23 and one end of the capacitor C21, the other end of the capacitor C21 is respectively connected to the other end of the resistor R21 and the 21st pin of the pressure chip 222; the 22nd pin of the pressure chip 222 is connected to the other end of the resistor R16, and the 23rd pin of the pressure chip 222 is connected to the other end of the resistor R17; the 24th pin of the pressure chip 222 is respectively connected to one end of the capacitor C26, one end of the capacitor C24 and one end of the resistor R24, the other end of the capacitor C26 is connected to the other end of the capacitor C24 and grounded.

[0029] In summary, with the help of the above technical solution of the utility model, the utility model adopts the touch module as a bridge between the pressure module and the host unit, and forwards the corresponding pressure signals in batches, which can effectively avoid installing a specific device program driver and adding data signatures on the host unit, so that the host unit can communicate with the pressure module in real time through the touch module, thereby improving the data communication efficiency between the host unit and the NFC module. In addition, the utility model can also be applied to a combination of n (n is an integer greater than or equal to 1) pressure sensors (either digital or analog output).

[0030] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A serial system based on a touch panel with built-in pressure function, characterized in that: It comprises a host unit (1) and a touch panel unit (2), wherein the touch panel unit (2) is connected to the host unit (1) via a first wired interface; The touch panel unit (2) comprises a touch module (21) and a pressure module (22), and the touch module (21) and the pressure module (22) are connected via a second wired interface, and the pressure module (22) is composed of a plurality of pressure sensors (221).

2. A serial system based on a touch panel with built-in pressure function according to claim 1, characterized in that: The touch module (21) is composed of a touch chip (211) and a touch matrix (212), and the touch chip (211) is electrically connected to the touch matrix (212).

3. A serial system based on a touch panel with built-in pressure function according to claim 2, characterized in that: The model of the touch chip (211) is CST3340.

4. A serial system based on a touch panel with built-in pressure function, characterized in that: It comprises a host unit (1) and a touch panel unit (2), wherein the touch panel unit (2) is connected to the host unit (1) via a first wired interface; The touch panel unit (2) comprises a touch module (21) and a pressure module (22), and the touch module (21) and the pressure module (22) are connected via a second wired interface; The pressure module (22) is composed of a pressure chip (222) and a plurality of pressure sensors (221), and the plurality of pressure sensors (221) are all electrically connected to the pressure chip (222).

5. A serial system based on a touch panel with built-in pressure function according to claim 4, characterized in that: The touch module (21) is composed of a touch chip (211) and a touch matrix (212), and the touch chip (211) is electrically connected to the touch matrix (212).

6. A serial system based on a touch panel with built-in pressure function according to claim 5, characterized in that: The model of the touch chip (211) is PCT1336U, and the model of the pressure chip (222) is CDS8712.

7. A serial system based on a touch panel with built-in pressure function according to claim 5, characterized in that: The twelfth pin of the touch chip (211) is connected to one end of a capacitor C15, the other end of the capacitor C15 is grounded, the thirteenth pin of the touch chip (211) is connected to one end of a capacitor C19, the other end of the capacitor C19 is grounded; The twenty-fifth pin of the touch chip (211) is connected to the positive electrode of the diode D2, the twenty-sixth pin of the touch chip (211) is respectively connected to one end of the capacitor C13, one end of the resistor R9 and the twenty-seventh pin of the touch chip (211), and the other end of the capacitor C13 is grounded; The thirty-second pin of the touch chip (211) is connected to one end of the resistor R8, the other end of the resistor R8 is connected to one end of the resistor R7, and the other end of the resistor R7 is connected to the thirty-third pin of the touch chip (211); The thirty-sixth pin of the touch chip (211) is connected to the diode D1.

8. A serial system based on a touch panel with built-in pressure function according to claim 4, characterized in that: The first pin of the pressure chip (222) is connected to one end of a diode C27, the other end of the diode C27 is grounded, the thirteenth pin of the pressure chip (222) is connected to one end of a resistor R18, the other end of the resistor R18 is respectively connected to one end of a resistor R19, one end of a resistor R17, one end of a resistor R16 and one end of a resistor R22; The fourteenth pin of the pressure chip (222) is connected to the other end of the resistor R19, the fifteenth pin of the pressure chip (222) is connected to one end of the resistor R20, and the other end of the resistor R20 is connected to one end of the resistor R21; The sixteenth pin of the pressure chip (222) is connected to one end of the resistor R27, the seventeenth pin of the pressure chip (222) is connected to one end of the resistor R26, the nineteenth pin of the pressure chip (222) is connected to one end of the resistor R29, and the other end of the resistor R29 is connected to the other end of the resistor R22; The 20th pin of the pressure chip (222) is respectively connected to one end of the capacitor C25 and one end of the capacitor C23, the other end of the capacitor C25 is respectively connected to the other end of the capacitor C23 and one end of the capacitor C21, the other end of the capacitor C21 is respectively connected to the other end of the resistor R21 and the 21st pin of the pressure chip (222); The twenty-second pin of the pressure chip (222) is connected to the other end of the resistor R16, and the twenty-third pin of the pressure chip (222) is connected to the other end of the resistor R17; The twenty-fourth pin of the pressure chip (222) is respectively connected to one end of the capacitor C26, one end of the capacitor C24 and one end of the resistor R24, and the other end of the capacitor C26 is connected to the other end of the capacitor C24 and is grounded.

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