CN104702262A - Induction misjudgment avoiding structure and input device - Google Patents

Abstract

The invention provides an input device and its structure for avoiding induction misjudgment. The avoidance induction misjudgment structure includes a circuit support structure layer and an induction layer, wherein the circuit support structure layer has a plurality of circuit support structures, and the plurality of circuit support structures are respectively used to support the piezoelectric actuator. The sensing layer is arranged under the circuit supporting structure layer and includes a plurality of sensing units corresponding to the plurality of circuit supporting structures respectively. At least one of the circuit support structure layer and the induction layer has a plurality of cutting grooves, and the plurality of cutting grooves are used to singulate the plurality of circuit support structures and/or singulate the plurality of sensing units, so that adjacent circuits in the plurality of circuit support structures The supporting structure and/or adjacent sensing units in the plurality of sensing units are not directly correspondingly connected. The structural design for avoiding induction misjudgment of the present invention can effectively achieve the separation of induction in the operation of the input device and improve the correctness of induction while maintaining the integrity of the input device.

Description

Structure and input device for avoiding induction misjudgment

technical field

The present invention relates to an induction misjudgment avoidance structure, specifically, the invention relates to an input device capable of avoiding induction misjudgment and an induction misjudgment avoidance structure thereof.

Background technique

With the increasingly high requirements for the thinning of electronic devices, the height of the applicable key structure is significantly reduced. Therefore, the conventional mechanical key structure with a large pressing stroke has been gradually replaced by small stroke keys or tactile keys. However, the reduction of the key size also means that the sensing array of the input device is also correspondingly reduced, which increases the chance of sensing misjudgment. Conventional keyboards usually use an additional physical structure to limit the operating range of the keys, resulting in an ineffective reduction in the overall size of the device.

Furthermore, conventional thin keyboards with touch buttons usually allow users to directly touch the sensing array, or only set a layer of thin film on the sensing array, lacking a structure to prevent multiple sensing or false touches. That is to say, when the sensing blocks are triggered by means of finger touch, it is easy to trigger multiple sensing blocks at the same time; .

Therefore, how to effectively avoid sensory misjudgment without increasing the size of the device is one of the main issues of research and development.

Contents of the invention

One of the objects of the present invention is to provide a structure for avoiding misjudgment of induction of an input device, which achieves the separation of each induction unit in induction by forming cutting grooves in the circuit support structure layer and/or induction layer while maintaining the overall shape. integrity.

The second object of the present invention is to provide a structure for avoiding misjudgment of induction of the input device, which improves the separation effect of the induction unit on the induction by the design that the openings of the cutting grooves do not face each other.

In one embodiment, the structure for avoiding misjudgment of the input device of the present invention, the input device has a plurality of piezoelectric actuators, including a circuit support structure layer and a sensing layer, wherein the circuit support structure layer has a plurality of circuit support structures, and The plurality of circuit supporting structures are respectively used to support the plurality of piezoelectric actuators; the sensing layer is disposed under the circuit supporting structure layer, and the sensing layer includes a plurality of sensing units corresponding to the plurality of circuit supporting structures. At least one of the circuit supporting structure layer and the sensing layer has a plurality of cutting grooves, and the plurality of cutting grooves are used to singulate the plurality of circuit supporting structures and/or singulate the plurality of sensing units, so that phases in the plurality of circuit supporting structures Adjacent circuit support structures and/or adjacent sensing units in the plurality of sensing units are not directly correspondingly connected.

In one embodiment, the plurality of cutting grooves are formed on the circuit supporting structure layer, and the plurality of cutting grooves respectively surround the plurality of circuit supporting structures, so that the plurality of circuit supporting structures are respectively connected to each other through at least one connecting portion, and The at least one connecting portion of the adjacent circuit supporting structures among the plurality of circuit supporting structures is arranged in a staggered manner.

In one embodiment, the plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves respectively surround the plurality of sensing units, so that the plurality of sensing units are connected to each other through at least one connecting portion, and the plurality of The at least one connecting portion of the adjacent sensing units among the sensing units is staggered.

In one embodiment, the plurality of cutting grooves are at least one open annular cutting groove, and the open annular cutting groove is a rectangular ring or a circular ring.

In one embodiment, the plurality of cutting grooves are formed on the circuit support structure layer, and the plurality of cutting grooves are respectively located around the plurality of circuit support structures, so that the adjacent circuit support structures of the plurality of circuit support structures At least one side is not connected to each other.

In one embodiment, the plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves are respectively located around the plurality of sensing units, so that at least one side of the sensing units adjacent to each other in the plurality of sensing units Not connected.

In one embodiment, the plurality of cutting grooves are a plurality of straight cutting grooves, wherein at least one end of the plurality of straight cutting grooves is not connected to each other.

In another embodiment, the present invention provides an input device with an induction misjudgment avoidance structure, wherein the input device includes a plurality of piezoelectric actuators, a circuit supporting structure layer, and a sensing layer. A plurality of piezoelectric actuators are used to receive pressing force. The circuit support structure layer has a plurality of circuit support structures, and the plurality of circuit support structures are respectively used to support a plurality of piezoelectric actuators. The sensing layer is disposed under the circuit supporting structure layer, and the sensing layer includes a plurality of sensing units respectively corresponding to the plurality of circuit supporting structures. At least one of the circuit supporting structure layer and the sensing layer has a plurality of cutting grooves, and the plurality of cutting grooves are used to singulate the plurality of circuit supporting structures and/or singulate the plurality of sensing units, so that adjacent ones of the plurality of circuit supporting structures The circuit support structure and/or the adjacent sensing units in the plurality of sensing units are not directly correspondingly connected. When one of the plurality of piezoelectric actuators receives a pressing force, it transmits the pressing force to the corresponding one of the plurality of circuit support structures to trigger the corresponding one of the plurality of sensing units, and the plurality of cutting The groove prevents the pressing force from being transmitted to the corresponding sensing unit of the piezoelectric actuator that is not pressed.

In one embodiment, a plurality of cutting grooves are formed on the circuit support structure layer, and the plurality of cutting grooves respectively surround the plurality of circuit support structures, so that each of the plurality of circuit support structures is connected to each other through at least one connection portion, and the plurality of circuit support structures At least one connecting portion of the adjacent circuit support structure is arranged in a staggered manner.

In one embodiment, a plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves respectively surround a plurality of sensing units, so that each of the plurality of sensing units is connected to each other through at least one connection portion, and adjacent sensing units in the plurality of sensing units At least one connection part of the unit is arranged in a staggered manner.

In one embodiment, the plurality of cutting grooves are at least one open annular cutting groove, and the open annular cutting groove is a rectangular ring or a circular ring.

In one embodiment, a plurality of cutting grooves are formed on the circuit support structure layer, and the plurality of cutting grooves are respectively located around the plurality of circuit support structures, so that at least one side of the adjacent circuit support structures in the plurality of cutting grooves is connected to Not connected to each other.

In one embodiment, a plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves are respectively located around the plurality of sensing units, so that at least one side of adjacent sensing units among the plurality of sensing units is not connected to each other.

In one embodiment, the plurality of cutting grooves are a plurality of straight cutting grooves, wherein at least one end of the plurality of straight cutting grooves is not connected to each other.

Compared with the conventional technology, the button structure and the input device of the present invention achieve thinner characteristics through the laminated structure, and at the same time, the piezoelectric actuator provides press feedback as a user operation prompt. Furthermore, the button structure and input device of the present invention become a modularized multi-layer stacked circuit support structure (layer) by integrating the electrical path in the support structure, which not only increases the manufacturability of the circuit support structure (layer), but also can The electrical isolation of different electrical path layers can be effectively achieved by stacking the layers, and the occurrence of short circuits can be effectively prevented. In addition, the input device of the present invention integrates a plurality of piezoelectric actuators into a single piezoelectric actuator combination, so that the piezoelectric actuators can be easily stacked on the circuit support structure to achieve electrical connection and support The purpose is to simplify the manufacturing process and save costs. Furthermore, the structural design for avoiding sensing misjudgment of the present invention can effectively achieve sensing separation in the operation of the input device and improve sensing accuracy while maintaining the integrity of the input device.

Description of drawings

Figure 1A and an exploded view of the button structure of an embodiment of the present invention

Fig. 1B is a cross-sectional view of the button structure in Fig. 1A of the present invention;

FIG. 1C is a schematic diagram of the pressing action of the button structure of FIG. 1B;

FIG. 1D is a cross-sectional view of a button structure according to another embodiment of the present invention;

FIG. 2 is an exploded view of the circuit support structure in the button structure of FIG. 1A;

3A is an exploded view of a circuit support structure according to another embodiment of the present invention;

3B is a perspective view of a circuit supporting structure according to another embodiment of the present invention;

Fig. 3C is an exploded view of a circuit support structure according to yet another embodiment of the present invention;

3D is a perspective view of a circuit supporting structure according to another embodiment of the present invention;

FIG. 4A is an exploded view of an input device according to an embodiment of the present invention;

4B to 4E are schematic diagrams of the support layer, the first path layer, the second path layer and the protection layer of the circuit support structure layer in the input device in FIG. 4A of the present invention;

FIG. 4F is a top view of the supporting layer, the first routing layer and the second routing layer of the circuit supporting structure layer in the input device in FIG. 4A of the present invention after being superimposed;

FIG. 4G is a top view of the supporting layer, the first routing layer, the second routing layer and the protective layer of the circuit supporting structure layer in the input device in FIG. 4A of the present invention after being superimposed;

5A to 5E are schematic diagrams of the support layer, the first path A layer, the first path B layer, the second path layer and the protection layer of the circuit support structure layer in the input device according to another embodiment of the present invention;

6 is a schematic diagram of a combination of piezoelectric actuators according to an embodiment of the present invention;

7A to 7C are schematic diagrams of the support layer, the circuit path layer and the protection layer of the circuit support structure layer in the input device according to another embodiment of the present invention;

FIG. 7D is a combined schematic diagram of the circuit supporting structure layer shown in FIG. 7A to FIG. 7C of the present invention;

FIG. 8A to FIG. 8C are schematic diagrams of embodiments of the present invention in which the avoidance induction misjudgment structure is arranged at different positions;

9A to FIG. 9C are schematic diagrams of cutting grooves of different shapes in the circuit supporting structure layer of the input device according to an embodiment of the present invention;

10A to 10C are schematic diagrams of different shapes of cutting grooves on the sensing layer of the input device according to another embodiment of the present invention.

Detailed ways

The invention provides an input device and its structure for avoiding induction misjudgment. Specifically, the input device of the present invention can be any input device with a button structure, such as an independent keyboard device, an input device integrated into an electronic product (such as a button or keyboard equipped with a mobile device, a tablet computer, etc.), but not This is the limit. Hereinafter, taking a keyboard as an example, details of the structure for avoiding misjudgment of sensing and the details of the input device according to the embodiment of the present invention will be described in detail with reference to the drawings.

As shown in Figure 1A and Figure 1B, in one embodiment, the button structure 100 of the present invention includes a piezoelectric actuator 110, a circuit support structure 120, a sensing unit 130 and a control circuit 160 (see Figure 1B), wherein the piezoelectric actuator The actuator 110 is stacked on the circuit supporting structure 120 , the sensing unit 130 is disposed under the circuit supporting structure 120 , and the control circuit 160 is coupled to the sensing unit 130 and the piezoelectric actuator 110 . Specifically, the circuit supporting structure 120 is used to support the piezoelectric actuator 110 and provide an electrical path for driving the piezoelectric actuator 110 , so that the control circuit 160 can be electrically connected to the piezoelectric actuator 110 through the circuit supporting structure 120 . The sensing unit 130 is a switch-type sensing unit. When the sensing unit 130 is pressed and triggered, the sensing unit 130 can output a trigger signal T, thereby enabling the control circuit 160 to generate (1) a sensing signal for the user to input characters or commands, and (2) A driving signal D (described in detail later) for driving the piezoelectric actuator 110 to vibrate is generated. The circuit support structure 120 has an accommodating space 120a, a first contact portion 120b and a second contact portion 120c, wherein the first contact portion 120b is electrically isolated from the second contact portion 120c. The piezoelectric actuator 110 has a driven part 114 and a piezoelectric part 112, wherein the piezoelectric part 112 is disposed in the accommodating space 120a and connected to the first contact part 120b for power supply, and the driven part 114 is supported by the circuit support structure 120, And power supply is connected to the second contact part 120c. When the sensing unit 130 is triggered, it can output a trigger signal T, and the control circuit 160 will output a driving signal D to the piezoelectric actuator 110 after receiving the trigger signal T, so as to drive the piezoelectric actuator 110 to vibrate (detailed in Related note for Figure 1C).

In addition, as shown in FIG. 1A and FIG. 1B , the button structure 100 may further include a base layer 140 and a covering layer 150 . In one embodiment, the base layer 140 is disposed under the sensing unit 130 to enhance the overall structural strength of the key structure 100 . In other words, the base layer 140 is preferably made of a relatively rigid material (such as metal plate, hard plastic or polymer layer), so as to maintain the strength of the key structure 100 without being bent and damaged. The base layer 140 can be selectively disposed according to the structural strength of the circuit supporting structure 120 . In other words, when the structural strength of the circuit supporting structure 120 is sufficient to support the key structure 100 from being bent and damaged, the base layer 140 does not need to be provided. In one embodiment, as shown in FIG. 1B , the coating layer 150 is covered on the piezoelectric actuator 110 , wherein the coating layer 150 has characters or patterns 150 a (see FIG. 1A ) as a key cap layer of the key structure 100 . The characters or patterns 150a can be formed on the covering layer 150 by printing, embossing, pasting, etc., but not limited thereto. In another embodiment, as shown in FIG. 1D, the cladding layer 150' is designed such that the piezoelectric actuator 110, the circuit support structure 120, the sensing unit 130, and the base layer 140 (or even together with the control circuit 160) are completely covered. covered in the cladding layer 150'. In other words, the cladding layers 150, 150' can not only serve as the key cap layer of the key structure 100, but also can be used to protect other components (such as piezoelectric actuators, circuit support structures, sensing units, base layers, and control elements) that constitute the key structure. circuit). The covering layers 150, 150' are preferably made of flexible materials (such as silicone pads), so as to increase the user's comfort when pressing the button structure 100. In one embodiment (not shown), when the cladding layer 150 only covers the piezoelectric actuator 110 as a key cap layer, the key structure 100 can optionally have various elements (such as 110, 120, 130, 140 , 150, 160) an integrated housing, so that each component is disposed in the housing and exposes the covering layer 150 for user operation. In addition, the above casing can also be integrated with the base layer 140 so that the bottom of the casing serves as the base layer.

Furthermore, the control circuit 160 can be disposed in any suitable position according to actual application requirements, for example, it is also wrapped in the cladding layer 150 ′, or it is disposed outside the cladding layer 150 . For example, the control circuit 160 can be disposed on the base layer 140, under the cladding layer 150, 150', or the control circuit 160 can be disposed in the cladding layer 150, 150', but not limited thereto. The piezoelectric actuator 110 can be fixed on the circuit support structure 120 and/or the cladding layer 150, 150' by adhesive, or can be sandwiched between the cladding layer 150, 150' and the cladding layer 150, 150' Between the circuit supporting structures 120, but not limited thereto. In this embodiment, the piezoelectric actuator 110 is preferably partly fixed on one side of the circuit support structure 120 in the accommodating space 120a, so that the piezoelectric actuator 110 can still maintain the relative arrangement position between the components. Retain a considerable degree of cantilever elasticity. Furthermore, the various components of the key structure 100 (such as the covering layer 150, the piezoelectric actuator 110, the circuit support structure 120, the sensing unit 130, the base layer 140, etc.) can also be fixed by adhesion to position each component. The relative position between components. The detailed structure and interaction of each element will be described in detail later.

In one embodiment, as shown in FIG. 1A and FIG. 1B , the piezoelectric actuator 110 is a thin-film piezoelectric actuator, which includes a driven part 114 and a piezoelectric part 112 . The driven part 114 can be in the form of a conductive film/plate, and the piezoelectric part 112 is formed of a piezoelectric material and disposed on the driven part 114 . In this embodiment, the driven part 114 is preferably a conductive metal layer, such as but not limited to a copper sheet. In other embodiments, the driven part 114 can be a conductive non-metal layer. In this embodiment, the piezoelectric part 112 may be a ceramic piezoelectric material layer and disposed on one side of the driven part 114 to form a one-sided piezoelectric actuator, but not limited thereto. According to actual needs, in other embodiments, the piezoelectric part 112 can be disposed on both sides of the driven part 114 to form a double-sided piezoelectric actuator. As shown in FIG. 1B, when the piezoelectric actuator 110 is superimposed on the circuit support structure 120, the surrounding part of the driven part 114 is superimposed on the circuit support structure 120, and is supported by the circuit support structure 120 to be electrically connected. The second contact part 120c, and the piezoelectric part 112 located at the central part of the lower surface of the driven part 114 protrudes toward the accommodating space 120a, and is substantially suspended in the accommodating space 120a of the circuit support structure 120 to electrically connect the first contact Section 120b.

The circuit supporting structure 120 can be a rectangular, circular or any suitable shape of the circuit supporting structure with the accommodation space 120a. In this embodiment, the accommodating space 120 a can be a groove or an opening formed in the circuit supporting structure 120 , and the shape and size of the accommodating space 120 a are preferably designed to accommodate the piezoelectric part 112 . The first contact 120b and the second contact 120c are respectively two electrically isolated contacts on the electrical path for transmitting the driving signal. In other words, the first contact point 120b is a contact point that is electrically connected to the first electrical path (such as a piezoelectric path) of the piezoelectric part 112, and the second contact point 120c is a point that is electrically connected to a second electrical path (such as a driven path) of the driven part 114. of contacts. In this embodiment, as shown in FIG. 1A , the circuit supporting structure 120 preferably has a protruding portion 120d, wherein the protruding portion 120d protrudes from one side of the accommodating space 120a toward the center of the accommodating space 120a to form a cantilever structure, so that the protruding portion 120d can be Relative to the main body of the circuit supporting structure 120, it can be displaced up/down in the accommodating space 120a. The first contact part 120b is disposed on the protruding part 120d (preferably located at the end of the protruding part 120d), so that the first contact part 120b protrudes into the accommodating space 120a. The second contact portion 120c can be disposed on the circuit supporting structure 120 around the accommodating space 120a. In this embodiment, the part of the driven part 114 not covered by the piezoelectric part 112 is supported by the circuit support structure 120 and is also used to electrically connect the second contact part 120c, and the piezoelectric part 112 faces the accommodation space 120a downward. And electrically connected to the first contact portion 120b protruding into the accommodating space 120a. With the elastic displacement characteristics provided by the cantilevered protrusion 120d, when the piezoelectric actuator 110 vibrates, the protrusion 120d and the first contact part 120b provided thereon can follow the piezoelectric actuator 110 in the accommodation space. Vibration in 120a increases structural flexibility.

As shown in FIG. 1C , when a pressing force F is applied from the outside, the pressing force F is transmitted downward through the piezoelectric actuator 110 and the circuit support structure 120 to trigger the sensing unit 130, so that the sensing unit 130 outputs a trigger signal T to the control circuit. 160. The control circuit 160 receives the trigger signal T and can output a driving signal D to the piezoelectric actuator 110 to drive the piezoelectric actuator 110 to vibrate. That is, when the user presses the key structure 100 (for example, when pressing on the covering layer 150, 150'), the trigger signal T is issued by pressing down on the trigger sensing unit 130 due to the structural characteristics of the circuit support structure 120, and the trigger signal T On the one hand, it serves as an induction signal for operating the key structure 100 to input corresponding characters or instructions, and at the same time, it serves as an indication signal for generating the driving signal D, so that the control circuit 160 receives the trigger signal T and sends out the driving signal D. When the piezoelectric actuator 110 receives the driving signal D from the control circuit 160 through the electrical path of the circuit support structure 120 (such as the first electrical path and the second electrical path described later), the piezoelectric actuator 110 can Vibration is generated in the accommodating space 120a to provide vibration feedback for the user to confirm the pressing.

In this embodiment, as shown in FIG. 2 , the circuit supporting structure 120 can be a multi-layer structure, which includes a supporting layer 122, a first routing layer 124 and a second routing layer 126, wherein the supporting layer 122, the first routing layer 124 and The second routing layer 126 is preferably fixed by adhesive, so as to be integrated into a modular multi-layer circuit supporting structure. Specifically, the supporting layer 122 has an accommodating portion 122 a to provide a space for supporting and vibrating the piezoelectric actuator 110 . The support layer 122 is preferably relatively rigid and has a preset thickness to limit the deformation limit of the piezoelectric actuator 110 when pressed, so that the piezoelectric actuator 110 will not be damaged due to excessive deformation due to a huge external force. In other words, the amount of deformation of the piezoelectric actuator 110 relative to the vibration of the circuit support structure 120 is preferably controlled by the rigidity and thickness of the support layer 122 or the depth of the accommodating portion 122a. It should be noted here that when the structural strength of the supporting layer 122 is sufficient to support the key structure from being bent and damaged due to pressing, the supporting layer 122 can simultaneously provide the function of the base layer 140 so that the key structure does not need the base layer 140 . The first routing layer 124 is stacked on the support layer 122 , and the second routing layer 126 is stacked on the first routing layer 124 to provide an electrical path for electrically connecting the piezoelectric actuator 110 . In this embodiment, the electrical paths of the circuit support structure 120 are designed as two-layer routing layers, wherein the first routing layer 124 has a first electrical routing 124c, and the second routing layer 126 has a second electrical routing 126b. The first routing layer 124 is a flexible film routing layer with a first electrical path 124c formed on an insulating layer; the second routing layer 126 is preferably a flexible thin film routing layer with a second electrical path 126b formed on an insulating layer. The first electrical path 124c is connected to the electrical path of the piezoelectric part 112 and includes the first contact part 120b, and the second electrical path 126b is connected to the electrical path of the driven part 114 and includes the second contact part 120c.

Specifically, the accommodating portion 122 a of the supporting layer 122 can be an opening or a groove formed in the supporting layer 122 . The first path layer 124 has a first opening 124 a and a tongue portion 124 b, wherein the first opening 124 a corresponds to the receiving portion 122 a of the support layer 122 . The tongue portion 124b protrudes from one side of the first opening 124a toward the center of the first opening 124a to form a cantilever structure, and the tongue portion 124b serves as a bottom layer of the protruding portion 120d. The first electrical path 124c extends to the tongue portion 124b to form the first contact portion 120b at the end of the tongue portion 124b. Correspondingly, the second path layer 126 has a second opening 126a, wherein the second opening 126a corresponds to the first opening 124a and the accommodating portion 122a. The size and shape of the second opening 126a, the first opening 124a and the accommodating portion 122a are preferably substantially the same, but not limited thereto. The second routing layer 126 preferably further has an extension 126c, wherein the extension 126c protrudes from one side of the second opening 126a toward the center of the second opening 126a, and the extension 126c covers a part of the tongue 124b to expose the first contact. Section 120b. That is, the extension length of the extension portion 126c is smaller than the extension length of the tongue portion 124b, so as to expose the first contact portion 120b disposed at the end of the tongue portion 124b. In this embodiment, the extension portion 126c is used as the upper portion of the protrusion portion 120d.

Referring to FIG. 1A and FIG. 2, when the supporting layer 122, the first routing layer 124 and the second routing layer 126 are stacked sequentially from bottom to top, the accommodating portion 122a, the first opening 124a and the second opening 126a are aligned with each other. connected to jointly form the accommodating space 120a, and when the second routing layer 126 is stacked on the first routing layer 124, the second routing layer 126 preferably shields the first electrical routing 124c except the first contact portion 120b, and exposes The first contact part 120b and the second contact part 120c are provided to electrically connect the piezoelectric part 112 and the driven part 114 of the piezoelectric actuator 110 respectively. That is, the supporting layer 122, the first routing layer 124 and the second routing layer 126 preferably have substantially the same appearance, so that the main bodies of each layer are superimposed on each other, and the extension part 126c of the second routing layer 126 is driven to be superimposed on the first routing layer. A tongue portion 124b of the routing layer 124 . In this embodiment, by covering the first electrical path of the first routing layer with the thin film insulating layer of the second routing layer, the second electrical routing and the first electrical routing can be effectively isolated electrically, so that the distribution of the electrical routing can be better configured. .

It should be noted here that the circuit supporting structure may have different implementations according to the design of the electrical path and the requirement of supporting strength. As shown in FIG. 3A and FIG. 3B , in another embodiment, the circuit supporting structure 120' includes the above-mentioned supporting layer 122, the first routing layer 124, and the second routing layer 126', and further includes an isolation layer 128, wherein the isolation layer 128 It is disposed between the first routing layer 124 and the second routing layer 126' to electrically isolate the first electrical routing 124c and the second electrical routing 126b. In this embodiment, in conjunction with the arrangement of the isolation layer 128, the second path layer 126' can have different forms, wherein the second path layer 126' has a second opening 126a', and the second opening 126a' corresponds to the accommodating portion 122a. The isolation layer 128 has a third opening 128a and a shielding portion 128b, wherein the third opening 128a corresponds to the first opening 124a, the second opening 126a' and the accommodating portion 122a. The shielding portion 128b is disposed on one side of the third opening 128a to shield a part of the tongue portion 124b and expose the first contact portion 120b. In this embodiment, the shielding portion 128b is used as the upper portion of the protruding portion 120d. When the supporting layer 122, the first routing layer 124, the isolation layer 128 and the second routing layer 126' are stacked sequentially from bottom to top, the accommodating portion 122a, the first opening 124a, the third opening 128a and the second opening 126a 'are mutually aligned and communicated to jointly form the accommodating space 120a, wherein when the isolation layer 128 is superimposed on the first path layer 124, the shielding part 128b is superimposed on the tongue part 124b and the isolation layer 128 is preferably substantially shielded except for the first contact The first electrical path 124c other than the portion 120b. In this embodiment, by setting the isolation layer 128, not only the electrical isolation between the first electrical path 124 and the second electrical path 126 can be achieved, but also the structural strength of the circuit supporting structure can be further increased to avoid excessive deformation of the piezoelectric actuator. damage.

It should be noted here that in the embodiment of FIG. 3A and FIG. 3B , the second routing layer 126 ′ chooses not to provide the above-mentioned extension portion 126 c, so that when the second routing layer 126 ′ is stacked on the isolation layer 128 , the second The routing layer 126' preferably exposes the shielding portion 128b, the first contact portion 120b and the second contact portion 120c, so as to maintain the elasticity of the protruding portion 120d. However, in other embodiments, the circuit support structure can shield part of the tongue portion 124b by at least one of the extension portion 126c of the second routing layer 126 in FIG. 2 and the shielding portion 128b of the isolation layer 128 in FIG. 3B. The first electrical path 124c exposes the first contact portion 120b at the end of the tongue portion 124b. When the extension part 126c and the shielding part 128b are used to shield part of the tongue part 124b, the shielding part 128b is the middle part of the protruding part 120d, and the extending part 126c is the upper part of the protruding part 120d.

Furthermore, when the area of the circuit support structure as the electrical path is large enough or the electrical path is relatively simple, the above-mentioned first electrical path and the second electrical path can be integrated into the same electrical path layer to reduce the number of electrical path layers and save cost. In another embodiment, as shown in FIG. 3C and FIG. 3D , the circuit supporting structure 120" includes the above-mentioned supporting layer 122 and the electrical routing layer 124', wherein the electrical routing layer 124' is stacked on the supporting layer 122 to accommodate Part 122a forms accommodating space 120a, and electric path layer 124' has first electric path 124c and second electric path 126b at the same time.Similarly, first electric path 124c includes first contact part 120b, and second electric path 126b includes The second contact portion 120c. Specifically, the circuit path layer 124' has a first opening 124a and a tongue 124b, wherein the first opening 124a corresponds to the accommodating portion 122a, and the tongue 124b is from one side of the first opening 124a toward the second An opening 124a protrudes from the center to form a cantilever structure, and the first contact portion 120b is disposed on the tongue 124b. In this embodiment, the first electrical path 124c extends from one side of the electrical path layer 124' to the tongue 124b and ends at its end Form the first contact portion 120b. The second electrical path 126b is arranged on the other side (such as the adjacent side) of the electrical path layer 124', to reach the first electrical path 124c and the second electrical path 126b while simplifying the number of electrical path layers The electrical isolation of the piezoelectric actuator 110 does not significantly affect the vibration elasticity when the piezoelectric actuator 110 is electrically connected to the circuit support structure 120 ″.

In addition, the circuit support structure 120" further includes a protection layer 129, wherein the protection layer 129 is disposed on the circuit path layer 124' to cover the exposed second circuit path except the first contact portion 120b and the second contact portion 120c

126b and the first electrical path 124c. In this embodiment, the protective layer 129 is an insulating layer, and has a fourth opening 129a and a shielding portion 129b, wherein the opening 129a corresponds to the accommodating portion 122a and the first opening 124a, and the shielding portion 129b is disposed on one side of the fourth opening 129a and Extends from the side to the center of the fourth opening 129b. When the supporting layer 122, the electrical path layer 124' and the protective layer 129 are stacked sequentially from bottom to top, the accommodating portion 122a, the first opening 124a and the fourth opening 129a are aligned and communicated with each other to jointly form the accommodating space 120a, The shielding portion 129b is superimposed on the tongue portion 124b to shield a part of the tongue portion 124b and expose the first contact portion 120b. It should be noted here that in this embodiment, the fourth opening 129a of the protective layer 129 is larger than the first opening 124a of the electrical routing layer 124', so that when the protective layer 129 is stacked on the electrical routing layer 124', the fourth opening 129a disposed on the electrical routing layer 124' can be exposed. The second contact portion 120c adjacent to the first contact portion 120b, but not limited thereto. In other embodiments (not shown), in addition to the opening corresponding to the accommodating portion 122a, the protective layer may also have an additional contact window, wherein the contact window is provided at a position corresponding to the second contact portion 120c to expose the second contact part 120c. In addition, according to circuit design requirements, the circuit supporting structures 120, 120' may further include a protective layer similar to the above, so as to shield the exposed second electrical path 126b and the first contact part 120b and the first contact part 120c Electrical path 124c.

Furthermore, as shown in FIG. 4A , in another embodiment, the present invention provides an input device 1 comprising a plurality of key structures of the foregoing embodiments. It should be noted here that in this embodiment, the input device 1 is described as including nine key structures arranged in a 3x3 array, but in other embodiments, the input device may include more than one key structure and be arranged in any suitable manner. The configuration is not limited to the examples shown. Furthermore, in this embodiment, the input device 1 is illustrated by taking the button structure with the circuit supporting structure 120 in FIG. 1A and FIG. 1B as an example, but it is not limited thereto. That is, the input device of the present invention can be made up of a plurality of key structures with circuit support structures 120, 120' and/or 120". Specifically, as shown in FIG. ) piezoelectric actuator 110, circuit supporting structure layer 12, sensing layer 13 and control circuit 16. Circuit supporting structure layer 12 has a plurality of circuit supporting structures 120, and sensing layer 13 includes a plurality of sensing units 130. In other words, when multiple When the button structure is integrated into the input device 1 (such as a keyboard), the elements of each button structure can be integrated into a single component layer, for example, a plurality of circuit support structures 120 can be integrated in the circuit support structure layer 12, so that each circuit support structure 120 can be seen As a circuit support unit on the circuit support structure layer 12, a plurality of sensing units 130 can be integrated in the sensing layer 13, and multiple keys can be controlled by a single control circuit 16 to simplify the manufacturing process and assembly process, but not for this purpose limit.

As shown in FIG. 4A , the plurality of piezoelectric actuators 110 are correspondingly disposed on the plurality of circuit support structures 120 . The sensing layer 13 is disposed under the circuit supporting structure layer 12, so that the plurality of sensing units 130 correspond to the plurality of circuit supporting structures 120, and each sensing unit 130 can be triggered independently to generate a corresponding trigger signal. The control circuit 16 is coupled to the plurality of sensing units 130 and the plurality of piezoelectric actuators 110 . Specifically, the control circuit 16 is electrically connected to the corresponding piezoelectric actuators 110 through a plurality of circuit support structures 120, so that the control circuit 16 receives the trigger signal of the sensing unit 130 and can output a driving signal to the corresponding piezoelectric actuator. device 110, and then drive the corresponding piezoelectric actuator 110 to vibrate. In this embodiment, the plurality of piezoelectric actuators 110, the plurality of circuit support structures 120 and the plurality of sensing units 130 are preferably one-to-one corresponding to each other to form a plurality of button structures 100 similar to the above, and through the control circuit 16 Independently control multiple button structures, but not limited thereto. For example, in other embodiments, one circuit support structure 120 can support more than one piezoelectric actuator according to the size, quantity and circuit complexity of the keys (see the embodiments of FIGS. Multiple button structures are controlled by more than one control circuit.

Moreover, similar to the above, the input device 1 may further include a base layer 14 and a covering layer 15 , wherein the base layer 14 is disposed under the sensing layer 13 to enhance the structural strength of the input device 1 . It should be noted here that the base layer 14 preferably has a size corresponding to the sensing layer 13 (that is, the size of the input device 1 ), and has properties similar to those of the above base layer 140 , which will not be repeated here. The cladding layer 15 covers the plurality of piezoelectric actuators 110, and the cladding layer 15 has a plurality of characters or patterns 150a respectively disposed on a plurality of keycap areas 152, wherein the plurality of keycap areas 152 respectively correspond to a plurality of circuits The supporting structure 120 enables the covering layer 15 to serve as a key cap layer. It should be noted here that the cladding layer 15 may have a structure and properties similar to the cladding layer 150 or 150", for example, the cladding layer 15 may only cover a plurality of piezoelectric actuators, or be designed to cover a plurality of piezoelectric actuators. The electric actuator 110 , the circuit supporting structure layer 12 , the sensing layer 13 and the base layer 14 (or even including the control circuit 16 ) are completely covered in the cladding layer, and details are omitted here.

Similar to the embodiment of FIG. 2 , each circuit supporting structure 120 has an accommodating space 120a, a first contact portion 120b and a second contact portion 120c, wherein the first contact portion 120b extends into the accommodating space 120a and is electrically connected to the second contact portion 120c. Sexual isolation. In other words, the first contact portion 120b and the second contact portion 120c are respectively located inside and outside of the accommodating space 120a, so that the first contact portion 120b is within the projection range of the accommodating space 120a on the sensing unit 130, and the second contact portion 120c is outside the projection range of the accommodating space 120a on the sensing unit 130 . Each piezoelectric actuator 110 has a driven part 114 and a piezoelectric part 112, wherein the piezoelectric part 112 is arranged on the driven part 114 to correspond to the accommodating space 120a and is connected to the first contact part 120b with power supply, and the driven part 114 receives The circuit support structure 120 supports and supplies power to the second contact portion 120c. When the external force is applied to one of the plurality of button structures, the pressing force is transmitted downward through the piezoelectric actuator 110 and the circuit support structure 120 to trigger the sensing unit 130, so that the sensing unit 130 outputs a trigger signal, and then the corresponding The piezoelectric actuator 110 receives the driving signal output by the control circuit 16 and vibrates. It should be noted here that the structural details of the piezoelectric actuator 110, the circuit support structure 120, and the sensing unit 130 of each button structure and their actuation methods between each other and the control circuit 16 can refer to the above-mentioned FIGS. 1A to 1C. Relevant descriptions will not be repeated here. The following embodiments focus on the configuration of the electrical paths and the details of the supporting structure of the circuit supporting structure layer.

As shown in FIG. 4A and FIG. 4B to FIG. 4G , the circuit supporting structure layer 12 is a multi-layer structure, which includes a supporting layer 210 , a first routing layer 220 and a second routing layer 230 . As shown in FIG. 4B , the support layer 210 has a plurality of (for example, 9) accommodating portions 210 a corresponding to the plurality of piezoelectric actuators 110 . The plurality of accommodating portions 210 a are a plurality of openings or grooves formed in the supporting layer 220 . In one embodiment, the plurality of accommodating portions 210a are preferably substantially identical openings or grooves formed on the support layer 220 , but not limited thereto. In other embodiments, according to design requirements, the plurality of accommodating portions 210 a may be openings or grooves of the same or different shapes and sizes formed on the supporting layer 220 (refer to FIG. 5A ). In this embodiment, the electrical path of the circuit supporting structure layer 12 is designed as a two-layer path layer (such as a first path layer 220 and a second path layer 230), wherein the first path layer 220 is stacked on the supporting layer 210, and The second routing layer 230 is stacked on the first routing layer 220 . As shown in FIG. 4C , the first routing layer 220 has a first electrical routing 222 , and the first electrical routing 222 includes a plurality of first contact portions 120 b. As shown in FIG. 4D , the second path layer 230 has a second electrical path 232 , and the second electrical path 232 includes a plurality of second contact portions 120c. The first contact part 120b and the second contact part 120c are respectively located inside and outside the accommodating part 210a, so that the first contact part 120b is within the projection range of the accommodating part 210a on the sensing unit 130, and the second contact part 120c is within the projection range of the accommodating part 210a. The accommodating portion 210 a is outside the projection range of the sensing unit 130 .

Similar to the embodiment in FIG. 2 , the first routing layer 220 has a plurality of first openings 220 a and a plurality of tongues 226 , wherein the plurality of first openings 220 a correspond to the plurality of accommodating portions 210 a respectively. In other words, the number, size, and position of the plurality of first openings 220a correspond to the plurality of accommodating portions 210a respectively. The plurality of tongues 226 respectively correspond to the plurality of first openings 220 a and protrude from one side of the corresponding first opening 220 a toward the center of the first opening 220 a. That is, each first opening 220a preferably has a tongue 226 protruding from the side edge of the opening toward the center of the opening to form a cantilever structure. The plurality of first contact portions 120b are respectively disposed on the plurality of tongue portions 226 . In other words, as shown in FIG. 4C , the first electrical path 222 has an electrical path corresponding to the number of keys (for example, 9), and extends to each tongue 226 in an electrically isolated manner to form a corresponding first contact portion at the end of the tongue 226. 120b.

As shown in FIG. 4D , the second routing layer 230 has a plurality of second openings 230 a and a plurality of extension portions 234 , wherein the plurality of second openings 230 a respectively correspond to the plurality of first openings 220 a and the plurality of accommodating portions 210 a. The plurality of extensions 234 correspond to the plurality of second openings 230a and protrude from one side of the corresponding second openings 230a toward the center of the second opening 230a. In this embodiment, the second electrical path 232 is used as a grounding path, so the second electrical path 232 is designed as a mesh electrical path, so that the second electrical path 232 is at least distributed on one side of each second opening 230a to form a corresponding first Two contact parts 120c.

As shown in FIG. 4F and the top view of FIG. 4G , when the supporting layer 210, the first routing layer 220 and the second routing layer 230 are stacked sequentially from bottom to top, the plurality of accommodating portions 210a, the plurality of first openings 220a and the plurality of second openings 230a are respectively aligned and communicated with each other, and the corresponding accommodating portion 210a, the first opening 220a and the second opening 230a jointly form the accommodating space 120a. When the second routing layer 230 is stacked on the first routing layer 220, the insulating layer constituting the second routing layer 230 covers the first electrical routing 222 of the first routing layer 220, and exposes the second electrical routing formed on the insulating layer. The path 232 and its plurality of second contact portions 120c, wherein each tongue portion 226 is only partially covered by the corresponding extension portion 234, and the plurality of first contact portions 120b are exposed.

As shown in FIG. 4E , the circuit supporting structure 12 may further include a protective layer 240, wherein the protective layer 240 is disposed on the second routing layer 230 to cover the exposed parts except the plurality of first contact portions 120b and the plurality of second contact portions 120c. The second electrical path 232 and the first electrical path 222 (if not covered by the second routing layer 230 ) are used to protect the electrical paths from being short-circuited or being damaged due to exposure. In this embodiment, the protection layer 240 has an opening 240a, and the opening 240a is designed such that a plurality (for example, nine) of the circuit supporting structures 120 are all exposed from the same opening 240a. However, in other embodiments, the protection layer may have a plurality of openings corresponding to the plurality of circuit support structures 120, so that the circuit support structures 120 are exposed from the corresponding openings (see the embodiments of FIG. 7A to FIG. 7D for details) . In addition, similar to the circuit support structure of FIG. 3A and FIG. 3B , the circuit support structure layer 12 may further include an isolation layer, wherein the isolation layer is disposed between the first routing layer 220 and the second routing layer 230 to electrically isolate the first routing layer 220 and the second routing layer 230. The electrical path 222 and the second electrical path 232 are not described in detail here.

In addition, when the number of key structures of the input device increases and the layout of the first electrical path becomes more complex and cannot be configured in a single first path layer, the circuit support structure layer can be designed to have a multi-layer stacked first path layer. As shown in FIG. 5A to FIG. 5E , in one embodiment, the electrical path supporting structure layer is used for an input device having, for example, 81 button structures, and includes a supporting layer 310 , a first path A layer 320 , and a first path B layer 330 , the second path layer 340 and the protection layer 350 . It should be noted here that for the structural details and functions of the supporting layer 310, the first routing layer A 320, the first routing layer B 330, the second routing layer 340, and the protective layer 350, please refer to the corresponding components of the above-mentioned circuit supporting structure layer 12. For description, only the differences of this embodiment will be described later. As shown in FIG. 5A , the support layer 310 has a plurality of accommodating portions 310a, wherein the plurality of accommodating portions (such as 310a, 310a′, 310a″) can have different sizes and different shapes according to the size of the corresponding key structure.

Furthermore, in this embodiment, the layout of the first routing layer of the circuit supporting structure layer is a two-layer first routing layer, such as the first routing layer A 320 and the first routing B layer 330, so that the multiple circuit supporting structures The plurality of first contact part groups are a first group of first contact parts 324 and a second group of first contact parts 334 . As shown in FIG. 5B , the first trace A layer 320 has a first electrical trace A 322 , wherein the first electrical trace A 322 includes a first group of first contact portions 324 . Specifically, the first path A layer 320 has a plurality of first openings (such as 320a, 320b) to respectively correspond to the plurality of accommodating portions 310a of the support layer 310, wherein the first opening 320a is an opening provided with a tongue portion 326 , and the second opening 320b is an opening without a tongue 326 . At least one first tongue portion 326 protrudes from one side of the first opening 320 a toward the center of the first opening 320 a for disposing the first contact portion 324 . In other words, in this embodiment, the first path A layer 320 is preferably provided with the first tongue 326 only in the corresponding opening (for example 320a) where the first contact portion 324 is to be provided, and the remaining openings (such as 320a) where the first contact portion is not provided ( For example, 320b) does not have a first tongue. In addition, according to the size of the button, corresponding to the large accommodating portion 310a', the first opening 320a' may be provided with a plurality of first tongues 326 for connecting more than one piezoelectric actuator 110 with power.

Similarly, as shown in FIG. 5C , the first trace B layer 330 has a first electrical trace B 332 , wherein the first electrical trace B 332 includes a second set of first contact portions 334 . Specifically, the first path B layer 330 has a plurality of second openings 330a, 330b to respectively correspond to the plurality of first openings 320b, 320a of the first path layer A 320, wherein the second opening 330a is provided with a second tongue 336, and the second opening 330b is the opening for setting the shielding portion 338. At least one second tongue portion 336 protrudes from one side of the second opening 330 a toward the center of the second opening 330 a for disposing the first contact portion 334 . Furthermore, at least one shielding portion 338 protrudes from one side of the second opening 330b toward the center of the second opening 330b for covering a part of the first tongue portion 324 of the first path armor layer 320 to expose the first contact 324 . In other words, the second tongue 336 is disposed on one side of the second opening (for example 330a) corresponding to the opening (for example 320b) of the first route A layer 320 without a tongue, and the shielding portion 338 is disposed on the side of the first route A layer 320. The layer 320 is provided with a side of the first opening (eg 320a ) of the first tongue 326 corresponding to the second opening (eg 330b ). In this embodiment, the corresponding first openings 320a, 320b and second openings 330b, 330a preferably have the same shape and size, and the first tongue portion 326 and the second tongue portion 336 preferably have the same extension length. Correspondingly, the extension length of the shielding portion 338 is smaller than the extension length of the second tongue portion 336 . Similarly, according to the key size, corresponding to the large accommodating part 310a", the second opening 330a' can be provided with a plurality of second tongues 336 to connect more than one piezoelectric actuator 110 with power supply, and corresponding to the large second opening 330a'. The second opening 330b' of the opening 320a' can be provided with a corresponding number of shielding parts 338, so as to respectively cover a part of the corresponding first tongue part 326 and expose the first contact part 324 thereon.

As shown in FIG. 5D, the second routing layer 340 has a plurality of third openings 340a, 340b corresponding to the plurality of second openings 330a, 330b respectively, wherein the third opening 340a is an opening provided with an extension part 346, and the third The opening 340b is an opening not provided with the extension part 346 . At least one shielding portion 346 protrudes from one side of the third opening 340 a toward the center of the third opening 340 a for covering a part of the second tongue portion 336 of the first path B layer 330 to expose the first contact 334 . In other words, the extension portion 346 is disposed on one side of the third opening (eg 340 a ) corresponding to the second opening (eg 330 a ) of the first path B layer 330 provided with the second tongue portion 336 . The second path layer 340 has a second electric path 342 as a ground path, so the second electric path 342 is designed as a mesh electric path, so that the second electric path 342 is at least distributed on one side of each third opening 340a, 340b, so as to A corresponding second contact portion 344 is formed.

As shown in FIG. 5E , the protection layer 350 is stacked on the second routing layer 340 to cover the exposed parts except the first group of first contact portions 324 , the first group of second contact portions 334 and the plurality of second contact portions 344 . Electrical paths (such as the second electrical path 342, the first electrical path B 332, the first electrical path A 322). The protection layer 350 can have different shapes according to the distribution of exposed electrical paths to be shielded/protected, and the protection layer 350 can be a single continuous layer or a combined layer composed of a plurality of separate protection segments.

When the supporting layer 310, the first routing layer A 320, the first routing layer B 330, the second routing layer 340, and the protective layer 350 are stacked sequentially from bottom to top, the plurality of accommodating parts 310a, the first opening 320a, 320b, the second openings 330b, 330a, and the third openings 340b, 340a are aligned and communicated with each other to jointly form the corresponding accommodating space 120a, and the first group of first contact parts 324 and the second group of first contact parts 334 are preferably A plurality of button structures (or in the arrangement direction of the piezoelectric actuators 110 ) are arranged alternately so that the first electrical path A 322 and the first electrical path B 332 have a better layout distribution. In other words, in terms of the first path A layer 320, the plurality of first openings 320a and the first openings 320b are preferably arranged at intervals, while the second openings 330a and the second openings 330b of the first path B layer 330 are correspondingly arranged at intervals, Therefore, the complex first electrical path has a looser layout area, increasing the manufacturability of the circuit supporting structure. It should be noted here that the arrangement of the first set of first contact portions 324 and the second set of first contact portions 334 may vary according to actual design. For example, in other embodiments, the first group of first contact portions 324 and the second group of first contact portions 334 can be arranged in rows or columns, or in a staggered manner every two contacts, but This is not the limit.

In addition, when the input device has a few button structures and the electrical path design of the circuit support structure layer is relatively simple, the circuit support structure layer may have an electric path layer in which the first electric path and the second electric path are integrated into a single layer. As shown in FIG. 7A to FIG. 7D , the circuit support structure layer 12' includes a support layer 710, a circuit path layer 720 and a protection layer 730. It should be noted here that for the structural details and functions of the support layer 710 , the circuit path layer 720 and the protection layer 730 , please refer to the description of the corresponding components of the above-mentioned circuit support structure layer 12 , and only the differences of this embodiment will be described later. As shown in FIG. 7A , the support layer 710 has a plurality (for example, 9) of accommodating portions 710 a. As shown in FIG. 7B , the circuit layer 720 is stacked on the support layer 710 and has a corresponding number of first openings 720 a and a plurality of tongues 726 . The plurality of first openings 720a respectively correspond to the plurality of accommodating portions 710a to jointly form a plurality of accommodating spaces 120a. The plurality of tongues 726 respectively protrude from one side of the corresponding first opening 720a toward the center of the first opening 720a. The first electrical path 722 includes a plurality of (for example, 9) electrical paths respectively extending to the corresponding tongues 726 in the first opening 720 a to form the first contact 120 b at the end of the tongues 726 . The second electrical path 728 serves as a ground path, so the second electrical path 728 is designed as a mesh electrical path, so that the second electrical path 728 is distributed at least on one side of each opening 710a to form the corresponding second contact portion 120c. In this embodiment, the first electrical path 722 is preferably concentrated on one side (eg, the left side) of the electrical path layer 720, and the second electrical path 728 extends into the phase from the other side (eg, the right side) of the electrical path layer 720. Between the adjacent openings 710a, the first electrical path 722 and the second electrical path 728 are electrically isolated from each other.

As shown in FIG. 7C , the protection layer 730 is disposed on the circuit path layer 720 to cover the exposed second circuit path 728 and the first circuit path 722 except the plurality of first contact portions 120b and the plurality of second contact portions 120c. . Specifically, in this embodiment, the protective layer 730 has a plurality of fourth openings 730a and a plurality of shielding portions 734, wherein the plurality of fourth openings 730a correspond to the first openings 720a of the electrical path layer 720, so that each electrical path The supporting structure is exposed from the corresponding fourth opening 730 a to connect the piezoelectric actuator 110 with power, as shown in FIG. 7D .

Furthermore, multiple piezoelectric actuators of the input device can also be integrated into a single piezoelectric actuator combination to simplify the assembly process. As shown in Figure 6, the piezoelectric actuator assembly 11 corresponds to the circuit support structure layer of Figure 5A to Figure 5E, which includes a plurality of (for example 82) piezoelectric actuators 110 and connectors 116, wherein the connectors 116 A plurality of piezoelectric actuators 110 are connected. As shown in the figure, each piezoelectric actuator 110 has a driven part 114 and a piezoelectric part 112 , and the piezoelectric part 112 is disposed on the driven part 114 . In addition, according to the size of the corresponding button, the piezoelectric actuator 110 may have more than one piezoelectric portion 112 disposed on the driven portion 114 . The connector 116 is connected to the same side of the driven part 114 of the plurality of piezoelectric actuators 110, so that the plurality of piezoelectric actuators 110 are arranged and connected in an array and each piezoelectric actuator 110 can be connected to the connector. 116 oscillate independently. In this embodiment, the connecting member 116 can be a frame-shaped connecting member having a plurality of parallel connecting bars 116a. The plurality of piezoelectric actuators 110 are spaced apart from each other along the connecting bar 116a, and preferably connect with the connecting bar 116a on the same side (eg upper side) of the driven part 114 . As shown in the figure, each driven portion 114 has a rectangular shape, and the plurality of driven portions 114 are connected to each other with the connecting bar 116a only on one side (eg, the horizontal upper side) of the rectangular shape. It should be noted here that the shape of the connecting member 116 and the number and arrangement of the connecting bars 116 a can be changed according to design requirements, and are not limited to the embodiment shown.

Moreover, from another point of view, the piezoelectric actuator assembly shown in FIG. 6 can be considered to include a conductive sheet 11a (such as but not limited to a copper sheet) and a plurality of piezoelectric elements (ie, piezoelectric parts 112), The conductive sheet 11 a has a plurality of cutting grooves 118 to define a plurality of driven parts 114 , and the plurality of driven parts 114 are connected to each other on one side to form a plurality of cantilevered pieces. A plurality of piezoelectric elements 112 are respectively disposed on a plurality of driven parts 114 to form a plurality of piezoelectric actuators 110 . In other words, the plurality of cutting grooves 118 cut the conductive sheet 11 a into a plurality of piezoelectric actuators 110 and connecting elements 116 . Taking the rectangular driven part as an example, the plurality of cutting grooves 118 includes at least one comb-shaped cutting groove, wherein the comb-shaped cutting groove 118 has a main groove 118a and a plurality of comb-shaped grooves 118b. A plurality of comb-tooth grooves 118b communicate with the main groove 118a and are arranged in parallel along the extending direction of the main groove 118a, wherein the main groove 118a is located on one side of a plurality of driven parts 114, and the comb-tooth grooves 118b extend into adjacent driven parts 114 between. When the piezoelectric actuator assembly 11 is stacked on the circuit support structure layer, a plurality of piezoelectric actuators can be achieved by fixing the connecting strip 116a or the part of the conductive sheet 11a on the opposite side of the main groove 118a to the circuit support structure layer. The actuator 110 is connected to the corresponding circuit support structure 120.

It should be noted here that when the components of multiple key structures are integrated into corresponding component layers, in order to avoid interference or false touches between adjacent key structures and affect the sensing of the sensing unit, the input device can have a function to avoid misjudgment of sensing. structure. As shown in the embodiment of FIGS. 8A to 8C , at least one of the circuit support structure layer 12 and the sensing layer 13 has a plurality of cutting grooves 170, 170a, 170b to singulate a plurality of circuit support structures 120 and/or singulate The plurality of sensing units 130 make adjacent circuit supporting structures 120 and/or adjacent sensing units 130 not directly correspondingly connected.

In one embodiment, as shown in FIG. 8A, a plurality of cutting grooves 170a are formed in the circuit support structure layer 12 to singulate a plurality of circuit support structures (or units) 120, so that adjacent circuit support structures are not directly correspondingly connected. , so as to reduce the linkage between the plurality of circuit support structures 120 . Specifically, the cutting groove 170a penetrates the circuit support structure layer 12 (for example, through the support layer, the first path layer, the second path layer, the protective layer, etc.), so that each circuit support structure 120 has at least one side and the adjacent The circuit supporting structures 120 are separated by cutting grooves 170a. That is, the plurality of cutting grooves 170 a are located around the plurality of circuit support structures 120 , so that at least one side of adjacent circuit support structures 120 is not connected to each other (that is, there is a gap). From another point of view, the plurality of cutting grooves 170a surrounds the plurality of circuit support structures 120, so that the adjacent circuit support structures 120 are connected to each other by at least one connecting portion 172, and at least one of the adjacent circuit support structures 120 The connection parts 172 are arranged in a staggered manner. As shown in the figure, corresponding to the rectangular circuit supporting structure 120, the cutting groove 170a is a rectangular open annular cutting groove with an opening, wherein the connecting part 172 is located at the opening of the open annular cutting groove, so that each circuit supporting structure 120 forms a circuit A cantilevered circuit support structure 120 on the support structure layer 12 . Furthermore, the plurality of cutting grooves 170 a surround the corresponding circuit supporting structures 120 with openings located above, so that the connecting portions 172 of adjacent circuit supporting structures 120 are not directly connected to each other. That is, the plurality of cutting grooves 170a are arranged so that openings of the cutting grooves 170a do not directly face each other.

When external pressure is applied, the pressed circuit support structure 120 is structurally separated from the adjacent circuit support structure 120 but not really separated, which can effectively trigger the corresponding sensing unit 130 below without driving the adjacent circuit A false touch operation of the support structure 120 occurs.

In another embodiment, as shown in FIG. 8B, a plurality of cutting grooves 170b are formed on the sensing layer 13 to singulate a plurality of sensing units 130, so that adjacent sensing units 130 are not directly correspondingly connected to reduce the number of sensing units. Linkage between 130. In this embodiment, the cutting groove 170b has substantially the same configuration as that of the cutting groove 170a in FIG. 8A , so that at least one side of adjacent sensing units 130 is not connected to each other, and details are not repeated here.

In yet another embodiment, as shown in FIG. 8C, a plurality of cutting grooves 170a and 170b are respectively formed on the circuit supporting structure layer 12 and the sensing layer 13, so as to singulate a plurality of circuit supporting structures 120 and a plurality of sensing units 130, so that the phase Adjacent circuit support structures 120 /sensing units 130 are not connected directly to reduce linkage between the plurality of circuit support structures 120 /sensing units 130 . It should be noted here that when the cutting groove 170 is formed on the circuit supporting structure layer 12 and the sensing layer 13 at the same time, the cutting grooves 170a and 170b formed around the corresponding circuit supporting structure 120 and the sensing unit 130 preferably have corresponding properties, sizes and The positions are such that the corresponding cutting grooves 170a and 170b can be connected to form the cutting groove 170 penetrating through the circuit supporting structure layer 12 and the sensing layer 13 at the same time.

Furthermore, the cutting grooves can have different shapes according to actual needs. As shown in Figure 9A and Figure 10A, the cutting groove 180a formed in the circuit supporting structure layer 12 and the induction layer 13 is an open annular cutting groove with two openings, wherein the two connecting parts 182 are respectively located at two ends of the cutting groove 180a. At the opening, the connecting portion 182 of the adjacent circuit support structure 120/sensing unit 130 is staggered, that is, the opening is not directly facing each other.

As shown in FIG. 9B and FIG. 10B , the cutting grooves 180b formed on the circuit supporting structure layer 12 and the sensing layer 13 are a plurality of linear cutting grooves, wherein at least one end of the plurality of linear cutting grooves 180b is not connected to each other. In this embodiment, the circuit support structure 120 and the sensing unit 130 are surrounded by four cutting grooves 180b (that is, the four cutting grooves 180b are formed around it), and any two of the four cutting grooves 180b are not connected to each other, so that the circuit The supporting structure 120 /sensing unit 130 is connected to other circuit supporting structures 120 /sensing unit 130 through four connection portions 186 . In this embodiment, the four connecting portions 186 are respectively located at the four corners of the circuit supporting structure 120 /sensing unit 130 , but it is not limited thereto. In other embodiments, the position of the connection part can be changed by arranging a plurality of straight cut grooves with different lengths and different connection methods around the circuit support structure 120 /sensing unit 130 .

As shown in FIG. 9C and FIG. 10C , in this embodiment, adjacent circuit support structures 120 /sensing units 130 have a common cutting groove 180 d on at least one side thereof, and have respective cutting grooves 180 c on the other sides. That is, adjacent circuit support structures 120/sensing units 130 may be separated by one or more cutting grooves. In this embodiment, the circuit supporting structure 120 /sensing unit 130 can also be connected to other circuit supporting structures 120 /sensing unit 130 through the four connection portions 186 as described in the above embodiment. The four connecting portions 186 are respectively located at four corners of the circuit supporting structure 120 /sensing unit 130 , but not limited thereto.

It should be noted here that the cutting groove preferably surrounds individual circuit support structures/sensing units, and the longer the cutting groove is, the better it is to avoid sensing misjudgment. In addition, the shape of the cutting groove is not limited to the embodiment shown. In other embodiments, corresponding to the shape of the button structure, the cutting groove can be in the form of a circular ring or an open annular cutting groove in other geometric forms. Furthermore, the structure for avoiding misjudgment of induction can be formed on other structural layers between the external trigger source and the sensing layer of the input device, and is not limited to the circuit supporting structural layer of the above-mentioned embodiment (for example, FIG. 4A, FIG. 5A to FIG. 5E, FIG. 7D shown), the sensing layer. That is, the cutting groove can be formed on the support structure layer with other circuit designs, so as to separate the sensing units in operation while maintaining the integrity of the overall shape.

Compared with the conventional technology, the button structure and the input device of the present invention achieve thinner characteristics through the laminated structure, and at the same time, the piezoelectric actuator provides press feedback as a user operation prompt. Furthermore, the button structure and input device of the present invention become a modularized multi-layer stacked circuit support structure (layer) by integrating the electrical path in the support structure, which not only increases the manufacturability of the circuit support structure (layer), but also can The electrical isolation of different electrical path layers can be effectively achieved by stacking the layers, and the occurrence of short circuits can be effectively prevented. In addition, the input device of the present invention integrates a plurality of piezoelectric actuators into a single piezoelectric actuator combination, so that the piezoelectric actuators can be easily stacked on the circuit support structure to achieve electrical connection and support The purpose is to simplify the manufacturing process and save costs. Furthermore, the structural design for avoiding sensing misjudgment of the present invention can effectively achieve sensing separation in the operation of the input device and improve sensing accuracy while maintaining the integrity of the input device.

The present invention has been described by the above embodiments, however, the above embodiments are only for the purpose of illustration and not for limitation. Those skilled in the art will appreciate that other modifications of the illustrated embodiments can be made to the embodiments specifically described herein without departing from the spirit of the invention. Accordingly, the scope of the present invention also covers such modifications and is limited only by the appended claims.

Claims (14)

1. A structure for avoiding induction misjudgment of an input device, the input device has a plurality of piezoelectric actuators, characterized in that, the structure for avoiding induction misjudgment of the input device comprises: The circuit support structure layer has a plurality of circuit support structures, and the plurality of circuit support structures are respectively used to support the plurality of piezoelectric actuators; and An induction layer, the induction layer is arranged under the circuit support structure layer, the induction layer includes a plurality of induction units, and the plurality of induction units correspond to the plurality of circuit support structures respectively; Wherein, at least one of the circuit supporting structure layer and the sensing layer has a plurality of cutting grooves, and the plurality of cutting grooves are used to singulate the plurality of circuit supporting structures and/or singulate the plurality of sensing units, so that the plurality of Adjacent circuit support structures in one circuit support structure and/or adjacent sensing units in the plurality of sensing units are not directly correspondingly connected. 2. The structure for avoiding inductive misjudgment of an input device according to claim 1, wherein the plurality of cutting grooves are formed on the circuit supporting structure layer, and the plurality of cutting grooves respectively surround the plurality of circuit supporting structures, The plurality of circuit supporting structures are respectively connected to each other through at least one connecting portion, and the at least one connecting portion of the adjacent circuit supporting structures among the plurality of circuit supporting structures is staggered. 3. The structure for avoiding misjudgment of the input device according to claim 1 or 2, wherein the plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves surround the plurality of sensing units respectively, The plurality of sensing units are respectively connected to each other through at least one connecting portion, and the at least one connecting portion of the adjacent sensing units among the plurality of sensing units is staggered. 4 . The structure for avoiding misjudgment by induction of an input device according to claim 3 , wherein the plurality of cutting grooves are at least one open annular cutting groove, and the open annular cutting groove is a rectangular ring or a circular ring. 5. The structure for avoiding inductive misjudgment of the input device according to claim 1, wherein the plurality of cutting grooves are formed on the circuit support structure layer, and the plurality of cutting grooves are respectively located on the layers of the plurality of circuit support structures. so that at least one side of the adjacent circuit support structures among the plurality of circuit support structures is not connected to each other. 6. The structure for avoiding misjudgment by induction of an input device according to claim 1 or 5, wherein the plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves are respectively located around the plurality of sensing units , so that at least one side of the adjacent sensing units among the plurality of sensing units is not connected to each other. 7 . The structure for avoiding misjudgment of the input device according to claim 6 , wherein the plurality of cutting grooves are a plurality of straight cutting grooves, wherein at least one end of the plurality of straight cutting grooves is not connected to each other. 7 . 8. An input device, characterized in that the input device comprises: a plurality of piezoelectric actuators for receiving pressing force; A circuit support structure layer, which has a plurality of circuit support structures, and the plurality of circuit support structures are respectively used to support the plurality of piezoelectric actuators; and The sensing layer is arranged under the circuit supporting structure layer, the sensing layer includes a plurality of sensing units, and the plurality of sensing units respectively correspond to the plurality of circuit supporting structures, Wherein, at least one of the circuit supporting structure layer and the sensing layer has a plurality of cutting grooves, and the plurality of cutting grooves are used to singulate the plurality of circuit supporting structures and/or singulate the plurality of sensing units, so that the plurality of circuits Adjacent circuit support structures in the supporting structure and/or adjacent sensing units in the plurality of sensing units are not directly correspondingly connected, and when one of the plurality of piezoelectric actuators receives the pressing force, it transmits the pressing force To corresponding one of the plurality of circuit support structures to trigger the corresponding one of the plurality of sensing units, the plurality of cutting grooves prevent the pressing force from being transmitted to the sensing unit corresponding to the unpressed piezoelectric actuator. 9. The input device according to claim 8, wherein the plurality of cutting grooves are formed on the circuit support structure layer, and the plurality of cutting grooves respectively surround the plurality of circuit support structures, so that the plurality of circuit support The structures are respectively connected to each other by at least one connection part, and the at least one connection part of the adjacent circuit support structures among the plurality of circuit support structures is staggered. 10. The input device according to claim 8 or 9, wherein the plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves respectively surround the plurality of sensing units, so that the plurality of sensing units respectively The at least one connection portion is connected to each other, and the at least one connection portion of the plurality of adjacent sensing units among the plurality of sensing units is staggered. 11. The input device according to claim 10, wherein the plurality of cutting grooves are at least one open annular cutting groove, and the open annular cutting groove is a rectangular ring or a circular ring. 12. The input device according to claim 8, wherein the plurality of cutting grooves are formed on the circuit support structure layer, and the plurality of cutting grooves are respectively located around the plurality of circuit support structures, so that the plurality of At least one side of adjacent circuit support structures in the circuit support structures is not connected to each other. 13. The input device according to claim 8 or 12, wherein the plurality of cutting grooves are formed on the sensing layer, and the plurality of cutting grooves are respectively located around the plurality of sensing units, so that the plurality of At least one side of the adjacent sensing units among the sensing units is not connected to each other. 14. The input device according to claim 13, wherein the plurality of cutting grooves are a plurality of straight cutting grooves, wherein at least one end of the plurality of straight cutting grooves is not connected to each other.