Touch device

Abstract

The utility model provides a touch control device. The touch control device comprises a circuit board and a touch sensing circuit, the touch sensing circuit is arranged on one surface of the circuit board; a touch mark formed by a circuit board copper wire is arranged on the other surface of the circuit board; a connecting through hole penetrating through the circuit board is formed in the touch identifier; the copper wire forming the touch mark is electrically connected with the touch sensing circuit through the connecting through hole. According to the touch device, the touch mark is formed through the circuit board copper wire, that is, an existing touch indication layer and an existing touch induction circuit layer are integrated on the same circuit board, an additional touch indication layer is not needed any more, and a user can directly achieve the touch function by touching the copper wire on the circuit board; in this way, the overall thickness of the touch device can be reduced, the problem of assembly alignment between the touch indication layer and the touch induction circuit layer does not need to be considered, and therefore the negative influence on the touch effect caused by poor assembly alignment precision is completely eradicated.

Description

Technical Field

[0001] This utility model relates to the field of touch control technology, and in particular to a touch control device. Background Technology

[0002] Existing touch devices generally consist of a multi-layer structure, namely a touch indicator layer and a sensing circuit layer. The touch indicator layer is used to indicate the touch position and display the touch function corresponding to that touch position. For example, a common touch power switch usually has the indicator graphic or text of the switch printed on a glass or plastic panel corresponding to the touch sensing position. At the same time, the touch sensing circuit is set below the touch indicator layer to realize the touch sensing function.

[0003] Existing touch devices contain a two-layer structure, so they need to be manufactured separately and then assembled. The two-layer structure is not only quite thick, but also requires high assembly precision. The touch marks on the touch indicator layer and the sensing positions on the sensing circuit layer need to be strictly aligned, otherwise the touch function will be affected. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a touch control device to resolve the problems existing in the prior art.

[0005] According to a first aspect of the present invention, a touch control device is provided, comprising: a circuit board and a touch sensing circuit;

[0006] The touch sensing circuit is located on one side of the circuit board; on the other side of the circuit board, there is a touch mark formed by copper wires of the circuit board; the touch mark has a connecting through hole passing through the circuit board; the copper wire forming the touch mark is electrically connected to the touch sensing circuit through the connecting through hole.

[0007] Preferably, the touch indicators include: play, pause, stop, volume up, volume down, or mute icons.

[0008] Preferably, the touch sensing circuit is a capacitive touch sensing circuit.

[0009] Preferably, the touch indicator consists of multiple copper wires.

[0010] Preferably, each copper wire has a corresponding through hole.

[0011] Preferably, two or more copper wires are electrically connected by a connecting wire, and one connecting through hole is provided on the connecting wire.

[0012] This invention relates to a touch control device that integrates the touch indicator layer and the sensing circuit layer on the same circuit board. Through a circuit board etching process, copper wires on the board surface are used to form touch markings. These markings are then connected to the touch sensing circuitry on the other side of the circuit board via connecting holes, thus enabling touch sensing functionality. This design eliminates the need for an additional touch indicator layer; users can directly touch the copper wires on the circuit board to achieve touch control. This reduces the overall thickness of the touch device and eliminates the need to consider the alignment issues between the touch indicator layer and the touch sensing circuitry layer, thereby preventing the negative impact of poor alignment on the touch performance. Attached Figure Description

[0013] Figure 1 This is a structural diagram of a touch device according to the present invention;

[0014] Figure 2 This is a schematic diagram of a touch icon for a touch device according to the present invention;

[0015] Figure 3 This is a schematic diagram of the connection through hole structure of a touch device according to the present invention;

[0016] Figure 4 This is a circuit diagram illustrating the sensing function of a touch device according to the present invention.

[0017] Figure Labels

[0018] 1. Circuit board; 2. Touch label; 3. Touch sensing circuit; 4. Connecting through hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Reference Figures 1 to 3 This utility model provides a touch control device, including: a circuit board 1 and a touch sensing circuit 3;

[0023] The touch sensing circuit 3 is disposed on one side of the circuit board 1; on the other side of the circuit board 1, there is a touch mark 2 formed by copper wires of the circuit board; the touch mark 2 is provided with a connection through hole 4 passing through the circuit board 1; the copper wires forming the touch mark 2 are electrically connected to the touch sensing circuit 3 through the connection through hole 4.

[0024] The touch sensing circuit 3 can be an existing capacitive touch sensing circuit or a resistive touch sensing circuit, as long as it can achieve the touch sensing function.

[0025] The copper wires on circuit board 1 can be formed by existing etching processes, specifically forming the copper wires of the touch mark 2.

[0026] Specifically, the touch icon 2 can be any graphic, icon, or text, for example... Figure 2 As shown, the top row, from left to right, contains icons for play, pause, and stop; the bottom row, from left to right, contains icons for volume up, volume down, and mute. Depending on the specific graphic, the touch icon 2 can be composed of one or more copper wires. In the case of multiple copper wires, to ensure that all copper wires forming the touch icon 2 can be electrically connected to the sensing circuit 3 on the other side of the circuit board 1, a connection through-hole 4 can be provided on each copper wire, or... Figure 1 As shown, the copper wires that make up the touch mark 2 are electrically connected using relatively thin connecting wires. Figure 1 The thicker lines are the copper wires that form the touch mark 2, and the thinner lines are the connecting lines. The thinner connecting lines are used so as not to affect the user's recognition of the touch mark 2. At this time, it is only necessary to set one connecting through hole 4 on the connecting line or any copper wire to achieve electrical connection with the sensing circuit 3 on the other side.

[0027] like Figure 3 The diagram shows the structure of the connecting through hole 4. This connecting through hole is made of metal and can realize the electrical connection of the circuits on the upper and lower sides of the circuit board 1.

[0028] like Figure 4The diagram shown is a schematic of the touch sensing circuit of the touch device of this application:

[0029] in,

[0030] R1: Charging resistor, usually selected between 10kΩ and 100kΩ.

[0031] C1: A small capacitor used to stabilize the RC oscillator, typically chosen between 10pF and 100pF.

[0032] R2: Discharge resistor, typically selected between 10kΩ and 100kΩ.

[0033] MCU_P IN: A GPIO pin of the microcontroller used to detect changes in capacitance.

[0034] The specific working principle of touch sensing is as follows:

[0035] 1. Initialization:

[0036] Configure MCU_PI N to output mode and set it to low level to ensure that C1 is fully discharged.

[0037] Switch MCU_PI N to input mode and start measuring the charging time of the RC network.

[0038] 2. Charging process:

[0039] When MCU_PI N is in input mode, C1 is charged through R1 and the touchpad.

[0040] Use the timer or counter function of the microcontroller to measure the time it takes for C1 to charge to a high level.

[0041] 3. Discharge process:

[0042] When C1 is charged to a high level, MCU_P IN is set to output mode again and pulled low, causing C1 to discharge through R2.

[0043] Repeat the above steps to continuously measure the charging time.

[0044] 4. Touch detection:

[0045] When a finger approaches or touches the touchpad, the touchpad's capacitance increases, causing the RC network to take longer to charge.

[0046] By comparing changes in charging time, it can be determined whether a touch event has occurred.

[0047] This invention innovatively integrates the functions of the touch indicator layer and the sensing circuit layer into one, directly implemented on the printed circuit board (PCB), breaking through the limitations of traditional touch technology. This integrated design significantly simplifies the structure of the circuit board and reduces the overall thickness. By eliminating the traditional touch indicator layer and subsequent assembly processes, it not only reduces production costs but also improves the overall yield of the touch device. Furthermore, the integrated design reduces the production steps of the touch device and saves production energy, achieving energy conservation and environmental protection.

[0048] This invention relates to a touch control device with broad application prospects, particularly suitable for touch devices requiring miniaturization and lightweight design. It provides a flexible and efficient design and manufacturing solution for human-computer interaction interfaces in electronic devices, bringing significant technological advancements and market value to related fields. Furthermore, this design also has important industrial application value and can be widely used in various electronic devices.

[0049] It should be noted that not all steps and modules in the above processes and system structure diagrams are mandatory; some steps or modules can be omitted as needed. The execution order of each step is not fixed and can be adjusted as required. The system structure described in the above embodiments can be a physical structure or a logical structure. That is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or they may be jointly implemented by certain components in multiple independent devices.

[0050] In the above embodiments, the hardware modules can be implemented mechanically or electrically. The present invention has been described and illustrated in detail above with reference to the accompanying drawings and preferred embodiments. However, the present invention is not limited to these disclosed embodiments. Based on the above embodiments, those skilled in the art will understand that more embodiments of the present invention can be obtained by combining the code review methods in the different embodiments described above, and these embodiments are also within the protection scope of the present invention.

Claims

1. A touch device, characterized in that, include: Circuit board and touch sensing circuit; The touch sensing circuit is disposed on one side of the circuit board; On the other side of the circuit board, there is a touch mark formed by copper wires on the circuit board. The touch icon has a connection through-hole that passes through the circuit board; The copper wire forming the touch mark is electrically connected to the touch sensing circuit through the connection via.

2. The touch device according to claim 1, characterized in that, The touch icons include: play, pause, stop, volume up, volume down, or mute icons.

3. The touch device according to claim 1, characterized in that, The touch sensing circuit is a capacitive touch sensing circuit.

4. The touch device according to claim 1, characterized in that, The touch icon consists of two or more copper wires.

5. The touch device according to claim 4, characterized in that, Each of the copper wires is provided with one corresponding connecting through hole.

6. The touch device according to claim 4, characterized in that, The two or more copper wires are electrically connected by a connecting wire, and a connecting through hole is provided on the connecting wire.

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