Haptic feedback component and haptic feedback display device

Abstract

The present disclosure provides a haptic feedback component and a haptic feedback display device. The haptic feedback component comprises: a flexible circuit board, comprising a flexible substrate, a first metal layer arranged on a first surface of the flexible substrate, and a second metal layer arranged on a second surface of the flexible substrate, wherein the first surface and the second surface are arranged opposite to each other in the thickness direction of the flexible substrate, the first metal layer comprises a plurality of connection pad groups, and the second metal layer comprises at least one input pad group; and a plurality of piezoelectric actuators arranged on the side of the first metal layer facing away from the flexible substrate, wherein each piezoelectric actuator is electrically connected to one connection pad group, the plurality of piezoelectric actuators are divided into at least one group, the piezoelectric actuators of the same group are electrically connected to the same input pad group, and the piezoelectric actuators of different groups are electrically connected to different input pad groups.

Description

Tactile feedback component and tactile feedback display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 28, 2023, with application number PCT / CN2023 / 142933 and application name “A tactile feedback component and tactile feedback device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present disclosure relates to the field of tactile feedback technology, and in particular to a tactile feedback component and a tactile feedback display device. Background Art

[0004] Haptics is a key area of ​​current technological development. Specifically, haptics enables devices to interact with the human body through touch.

[0005] Summary of the Invention

[0006] The present disclosure provides a tactile feedback component and a tactile feedback display device, and the specific solutions are as follows:

[0007] An embodiment of the present disclosure provides a tactile feedback component, comprising:

[0008] A flexible circuit board comprises: a flexible substrate, a first metal layer disposed on one side of a first surface of the flexible substrate, and a second metal layer disposed on one side of a second surface of the flexible substrate; the first surface and the second surface are disposed opposite each other along the thickness direction of the flexible substrate; the first metal layer comprises a plurality of connection pad groups, and the second metal layer comprises at least one input pad group;

[0009] Multiple piezoelectric actuators are arranged on a side of the first metal layer facing away from the flexible substrate, and each piezoelectric actuator is electrically connected to one of the connection pad groups; the multiple piezoelectric actuators are divided into at least one group, the piezoelectric actuators in the same group are electrically connected to the same input pad group, and the piezoelectric actuators in different groups are electrically connected to different input pad groups; the piezoelectric actuators are configured to generate tactile feedback in response to a drive signal input by the input pad group.

[0010] In one possible implementation, in the tactile feedback assembly provided in an embodiment of the present disclosure, a surface of the piezoelectric actuator facing the first metal layer includes a positive lead structure and a negative lead structure, each of the connection pad groups includes a positive connection pad and a negative connection pad, the positive lead structure is electrically connected to the positive connection pad, and the negative lead structure is electrically connected to the negative connection pad;

[0011] Each of the input pad groups includes a positive input pad, the first metal layer also includes a positive electrode trace, and the second metal layer also includes a positive electrode lead wire;

[0012] Each of the positive electrode connection pads electrically connected to the piezoelectric actuators of the same group is electrically connected to the corresponding positive electrode input pad through at least one positive electrode trace and at least one positive electrode lead wire.

[0013] In one possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, each of the input pad groups further includes a negative input pad, the first metal layer further includes a negative electrode trace, and the second metal layer further includes a negative electrode lead wire; each of the negative electrode connection pads electrically connected to the piezoelectric actuators of the same group is electrically connected to the corresponding negative electrode input pad through at least one negative electrode trace and at least one negative electrode lead wire.

[0014] In one possible implementation, in the above-mentioned tactile feedback component provided by an embodiment of the present disclosure, the positive electrode traces electrically connected to the piezoelectric actuators in the same group and the positive electrode lead wires are electrically connected through vias passing through the flexible substrate, and the negative electrode traces electrically connected to the piezoelectric actuators in the same group and the negative electrode lead wires are electrically connected through vias passing through the flexible substrate.

[0015] In a possible implementation, in the tactile feedback assembly provided in an embodiment of the present disclosure, the flexible circuit board includes a hollow area and a solid area surrounding the hollow area, and the plurality of connection pad groups are arranged around the hollow area;

[0016] The solid area includes a first solid area and a second solid area located on opposite sides of the hollow area in a first direction, and the solid area also includes a third solid area and a fourth solid area located on opposite sides of the hollow area in a second direction, wherein the first direction is perpendicular to the second direction;

[0017] The plurality of piezoelectric actuators include: a first group of piezoelectric actuators located in the first physical area and the second physical area, and a second group of piezoelectric actuators located in the third physical area and the fourth physical area;

[0018] The multiple piezoelectric actuators in the first physical area and the second physical area are respectively located in at least the same row, and each row is arranged sequentially along the second direction; the multiple piezoelectric actuators in the third physical area and the fourth physical area are respectively located in at least the same row, and each row is arranged sequentially along the first direction.

[0019] In one possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, the positive electrode wirings and the negative electrode wirings respectively corresponding to the first group of piezoelectric actuators and the second group of piezoelectric actuators are insulated from each other, and the positive electrode lead wires and the negative electrode lead wires respectively corresponding to the first group of piezoelectric actuators and the second group of piezoelectric actuators are insulated from each other.

[0020] In a possible implementation, in the tactile feedback component provided in an embodiment of the present disclosure, the piezoelectric actuators in the first physical area, the second physical area, the third physical area, and the fourth physical area respectively correspond to the connection pad group one-to-one, the positive connection pads corresponding to the piezoelectric actuators in the same row in the first physical area and the second physical area are located in the same row and arranged along the second direction, and the negative connection pads corresponding to the piezoelectric actuators in the same row in the first physical area and the second physical area are located in the same row and arranged along the second direction;

[0021] The positive connection pads corresponding to the piezoelectric actuators in the same row in the third physical area and the fourth physical area are located in the same row and arranged along the first direction, and the negative connection pads corresponding to the piezoelectric actuators in the same row in the third physical area and the fourth physical area are located in the same row and arranged along the first direction.

[0022] In a possible implementation, in the tactile feedback assembly provided in an embodiment of the present disclosure, the third physical area is divided into a first sub-physical area and a second sub-physical area along the first direction, and the fourth physical area is divided into a third sub-physical area and a fourth sub-physical area along the first direction, wherein the first sub-physical area and the third sub-physical area are close to the second physical area, and the second sub-physical area and the fourth sub-physical area are close to the first physical area;

[0023] The second group of piezoelectric actuators includes: a first subgroup of piezoelectric actuators located in the first sub-body region and the third sub-body region, and a second subgroup of piezoelectric actuators located in the second sub-body region and the fourth sub-body region;

[0024] The positive electrode wirings and the negative electrode wirings corresponding to the first subgroup piezoelectric actuator and the second subgroup piezoelectric actuator are different, and the positive electrode lead wires and the negative electrode lead wires corresponding to the first subgroup piezoelectric actuator and the second subgroup piezoelectric actuator are different.

[0025] In a possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, the positive connecting pads corresponding to the piezoelectric actuators located in different rows of the first sub-entity area and the third sub-entity area are aligned along the second direction, the negative connecting pads corresponding to the piezoelectric actuators located in different rows of the first sub-entity area and the third sub-entity area are aligned along the second direction, and the positive connecting pads and the negative connecting pads in the same row in the first sub-entity area and the third sub-entity area are alternately arranged along the first direction.

[0026] In one possible implementation, in the tactile feedback assembly provided in an embodiment of the present disclosure, the plurality of piezoelectric actuators in the first sub-body region are located in the same row and arranged sequentially along the first direction; the negative electrode connection pads of the piezoelectric actuators in the first sub-body region are close to the outer edge of the first sub-body region and arranged along the first direction; and the positive electrode connection pads of the piezoelectric actuators in the first sub-body region are close to the inner edge of the first sub-body region and arranged along the first direction.

[0027] The multiple piezoelectric actuators in the third sub-entity area are located in the same row and arranged in sequence along the first direction. The negative connecting pad of each piezoelectric actuator in the third sub-entity area is close to the outer edge of the third sub-entity area and arranged along the first direction. The positive connecting pad of each piezoelectric actuator in the third sub-entity area is close to the inner edge of the third sub-entity area and arranged along the first direction.

[0028] In a possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, all the positive electrode connecting pads located in the second sub-entity area are located in the same row and arranged sequentially along the first direction, all the negative electrode connecting pads located in the second sub-entity area are located in the same row and arranged sequentially along the first direction, the positive electrode connecting pads and the negative electrode connecting pads are located in different rows, and the positive electrode connecting pads and the negative electrode connecting pads are arranged alternately along the first direction.

[0029] In a possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, all the positive electrode connection pads located in the fourth sub-entity area are located in the same row and arranged in sequence along the first direction, all the negative electrode connection pads located in the fourth sub-entity area are located in the same row and arranged in sequence along the first direction, the positive electrode connection pads and the negative electrode connection pads are located in different rows, and the positive electrode connection pads and the negative electrode connection pads are arranged alternately along the first direction.

[0030] In a possible implementation, in the tactile feedback component provided in an embodiment of the present disclosure, the physical area further includes a fifth physical area, the fifth physical area is located on a side of the first physical area away from the second physical area, and each of the input pad groups is located in the fifth physical area.

[0031] In a possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, the fifth physical area is located at the edge of the first physical area and close to the third physical area, or the fifth physical area is located at the edge of the first physical area and close to the fourth physical area, or the fifth physical area is located in the middle area of ​​the first physical area.

[0032] In one possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, the input pad group includes: a first input pad group corresponding to the first group of piezoelectric actuators, a second input pad group corresponding to the first sub-group of piezoelectric actuators, and a third input pad group corresponding to the second sub-group of piezoelectric actuators.

[0033] In one possible implementation, in the above-mentioned tactile feedback component provided in an embodiment of the present disclosure, the input pad group includes: a first input pad group located in the first physical area and corresponding to the piezoelectric actuator in the first physical area, a second input pad group located in the second physical area and corresponding to the piezoelectric actuator in the second physical area, a third input pad group located in the first sub-physical area and corresponding to the piezoelectric actuator in the first sub-physical area, a fourth input pad group located in the third sub-physical area and corresponding to the piezoelectric actuator in the third sub-physical area, a fifth input pad group located in the second sub-physical area and corresponding to the piezoelectric actuator in the second sub-physical area, and a sixth input pad group located in the fourth sub-physical area and corresponding to the piezoelectric actuator in the fourth sub-physical area.

[0034] In a possible implementation, in the tactile feedback component provided by an embodiment of the present disclosure, the first input pad group is located at one end of the first physical area, and the second input pad group is located at one end of the second physical area;

[0035] The third input pad group is located at one end of the first sub-physical area, the fourth input pad group is located at one end of the third sub-physical area, and the third input pad group and the fourth input pad group are close to the second physical area;

[0036] The fifth input pad group is located at one end of the second sub-physical region, the sixth input pad group is located at one end of the fourth sub-physical region, and the fifth input pad group and the sixth input pad group are close to the first physical region.

[0037] In a possible implementation, in the tactile feedback assembly provided in an embodiment of the present disclosure, the shape of the piezoelectric actuator includes a rectangle or a circle, and the structure of the piezoelectric actuator is a piezoelectric film or a piezoelectric ceramic block.

[0038] Accordingly, an embodiment of the present disclosure further provides a tactile feedback display device, comprising:

[0039] cover;

[0040] A display module is provided on the non-touch surface of the cover plate;

[0041] A tactile feedback component is provided on the non-touch surface of the cover plate, and the tactile feedback component is the above-mentioned tactile feedback component provided in the embodiment of the present disclosure.

[0042] In one possible implementation, in the above-mentioned tactile feedback display device provided in an embodiment of the present disclosure, the cover plate includes a central area and a peripheral area surrounding the central area, the display module is arranged in the central area of ​​the cover plate, the hollow area of ​​the tactile feedback component corresponds to the central area of ​​the cover plate, and the solid area of ​​the tactile feedback component corresponds to the peripheral area of ​​the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a schematic top view of a flexible circuit board in a tactile feedback assembly provided by an embodiment of the present disclosure;

[0044] FIG2 is a schematic cross-sectional view taken along the CC' direction in FIG1 ;

[0045] FIG3 is a schematic top view of a piezoelectric actuator in a tactile feedback assembly provided by an embodiment of the present disclosure;

[0046] FIG4 is a schematic diagram of the partitioning of the piezoelectric actuator connected to the flexible circuit board in FIG1 ;

[0047] FIG5 is a schematic diagram of wiring in a portion of the flexible circuit board in FIG1 ;

[0048] FIG6 is a schematic diagram of wiring of another part of the flexible circuit board in FIG1 ;

[0049] FIG7 is a schematic diagram of wiring of another part of the flexible circuit board in FIG1;

[0050] FIG8 is an enlarged schematic diagram of the fifth physical area B5 and its surroundings in FIG1 ;

[0051] FIG9 is a schematic top view of a flexible circuit board in another tactile feedback assembly provided by an embodiment of the present disclosure;

[0052] FIG10 is a schematic diagram of the partitioning of the piezoelectric actuator connected to the flexible circuit board in FIG9 ;

[0053] FIG11 is a diagram showing only the wiring and lead-out structures corresponding to the first and third sub-sub-entities in FIG9 ;

[0054] FIG12 is a schematic top view of a flexible circuit board in another tactile feedback assembly provided by an embodiment of the present disclosure;

[0055] FIG13 is a diagram showing only the wiring and lead-out structures corresponding to the first and second physical areas in FIG12 ;

[0056] FIG14 is a diagram showing only the wiring and lead-out structures corresponding to the first and third sub-sub-entities in FIG12 ;

[0057] FIG15 is a diagram showing only the wiring and lead-out structures corresponding to the second sub-entity area and the fourth sub-entity area in FIG12 ;

[0058] FIG16 is an enlarged schematic diagram of the fifth physical area and its surroundings in FIG12;

[0059] FIG17 is a schematic top view of a flexible circuit board in another tactile feedback assembly provided by an embodiment of the present disclosure;

[0060] FIG18 is a schematic top view of a flexible circuit board in another tactile feedback assembly provided by an embodiment of the present disclosure;

[0061] FIG19 is a schematic top view of a flexible circuit board in another tactile feedback assembly provided by an embodiment of the present disclosure;

[0062] FIG20 is a schematic structural diagram of the first physical area in FIG19;

[0063] FIG21 is a schematic structural diagram of the second physical area in FIG19;

[0064] FIG22 is a schematic structural diagram of the first fruiting body region in FIG19 ;

[0065] FIG23 is a schematic structural diagram of the second fruiting body region in FIG19;

[0066] FIG24 is a schematic structural diagram of the third fruiting body region in FIG19 ;

[0067] FIG25 is a schematic structural diagram of the fourth fruiting body region in FIG19;

[0068] FIG26 is a schematic top view of a flexible circuit board in another tactile feedback assembly provided by an embodiment of the present disclosure;

[0069] FIG27 is a schematic structural diagram of a tactile feedback display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. And in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0071] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words “include” or “comprise” and the like used in this disclosure mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words “connect” or “connected” and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Inside”, “outside”, “upper”, “lower”, etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0072] It should be noted that the sizes and shapes of the figures in the accompanying drawings do not reflect the actual scale and are only for the purpose of illustrating the present disclosure. The same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0073] The multimodal fusion of vision, hearing, and touch is of great significance and value in enhancing operational safety and effectiveness and enriching user experience. Currently, visual and auditory presentation technologies are relatively mature and rich, but tactile feedback is not rich and realistic enough. Currently, fields such as mobile phones and wearable devices mainly generate vibration feedback through low-frequency vibrations of ERM and LRA. The effect is relatively simple and single, far from meeting user expectations. However, the use of piezoelectric transducers can generate auditory reminders through the action of sound excitation signals during human-computer interaction; use low-frequency vibration signals to generate vibration tactile feedback effects; the excitation signal of the ultrasonic segment generates a film squeeze effect to change the surface friction coefficient, and through waveform modulation, produce virtual surface tactile feedback effects similar to texture and freeze.

[0074] Currently, surface tactile display structures generally arrange piezoelectric actuators in the peripheral area of ​​the cover plate. The piezoelectric actuators are generally connected to an external drive circuit through wiring on the cover plate. The external drive circuit excites the piezoelectric actuator to vibrate and drive the cover plate to resonate to achieve tactile feedback. Since there are generally a large number of piezoelectric actuators, the conventional wire connection method of wiring on the cover plate will require a large number of wires, and in order to meet the maximum current requirements, thicker diameter wiring must be selected. However, the display assembly requirements generally do not have much space to place so many wirings. At the same time, because the piezoelectric actuator itself will drive vibration, too many wiring connections will generate unpredictable noise with the vibration, thus affecting the product's tactile experience.

[0075] In order to solve the problem that the frame of the existing surface tactile display structure does not have a large space for placing the connection wiring of the piezoelectric actuator and that too many piezoelectric actuator connection wiring will generate noise due to vibration, an embodiment of the present disclosure provides a tactile feedback component, as shown in Figures 1 to 6. Figure 1 is a top view of the flexible circuit board in the tactile feedback component provided by the embodiment of the present disclosure, Figure 2 is a cross-sectional schematic diagram along the CC' direction in Figure 1, Figure 3 is a top view of the piezoelectric actuator in the tactile feedback component provided by the embodiment of the present disclosure, Figure 4 is a partitioned schematic diagram of the piezoelectric actuator connected to the flexible circuit board in Figure 1, Figure 5 is a schematic diagram of the wiring of a portion of the flexible circuit board in Figure 1, Figure 6 is a schematic diagram of the wiring of another portion of the flexible circuit board in Figure 1, and Figure 7 is a schematic diagram of the wiring of another portion of the flexible circuit board in Figure 1. The tactile feedback component includes:

[0076] A flexible circuit board (FPC) 1 includes a flexible substrate 11, a first metal layer 12 disposed on a first surface A of the flexible substrate 11, and a second metal layer 13 disposed on a second surface B of the flexible substrate 11. The first surface A and the second surface B are disposed opposite each other along the thickness direction of the flexible substrate 11. The first metal layer 12 includes a plurality of connection pad groups C, and the second metal layer 13 includes at least one input pad group D.

[0077] Multiple piezoelectric actuators 2 are arranged on the side of the first metal layer 12 away from the flexible substrate 11, and each piezoelectric actuator 2 is electrically connected to a connection pad group C; the multiple piezoelectric actuators 2 are divided into at least one group, the piezoelectric actuators 2 in the same group are electrically connected to the same input pad group D, and the piezoelectric actuators 2 in different groups are electrically connected to different input pad groups D; the piezoelectric actuators 2 are configured to generate tactile feedback in response to a drive signal input by the input pad group D.

[0078] The tactile feedback assembly provided in the embodiment of the present disclosure connects different groups of piezoelectric actuators to corresponding input pad groups via an FPC. The input pad groups can be connected to an external PCB. Since the FPC can route wires on both sides, when the tactile feedback assembly of the present disclosure is integrated with a display or touch substrate, the space occupied by the wiring connecting the piezoelectric actuators in the border area of ​​the substrate can be reduced, thereby achieving a narrow border. Furthermore, by rationally arranging the way in which the piezoelectric actuators are connected to the PCB via wiring, the noise generated by the wiring as the piezoelectric actuators vibrate can also be reduced.

[0079] It should be noted that, for the sake of schematic illustration, Figures 1 and 5-7 illustrate the first metal layer 12 on the first surface A of the flexible substrate 11 and the second metal layer 13 on the second surface B as being in the same plane. Of course, the actual structure is that the first metal layer 12 and the second metal layer 13 shown in Figure 2 are located on opposite sides of the flexible substrate 11.

[0080] It should be noted that the dotted frame E in FIG. 1 and FIG. 4 to FIG. 7 respectively demarcates the welding position corresponding to each piezoelectric actuator 2 , that is, the dotted frame E is the area occupied by the piezoelectric actuator 2 on the flexible circuit board 1 shown in FIG. 3 .

[0081] In some embodiments, in the tactile feedback component provided in the embodiments of the present disclosure, the material of the flexible substrate 11 includes but is not limited to PI (polyimide), PMMA (polymethyl methacrylate), PC (polycarbonate), PET (Polyethylene terephthalate), PC / PMMA composite materials, and organic-inorganic composite materials.

[0082] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG3 , the piezoelectric actuator 2 has a positive lead-out structure 21 and a negative lead-out structure 22 on a side facing the first metal layer 12. Each connection pad group C includes a positive connection pad 121 and a negative connection pad 122. The positive lead-out structure 21 is electrically connected to the positive connection pad 121, and the negative lead-out structure 22 is electrically connected to the negative connection pad 122. For example, the positive lead-out structure 21 of the piezoelectric actuator 2 shown in FIG3 is welded to the positive connection pad 121 within the dotted box E, and the negative lead-out structure 22 is welded to the negative connection pad 122 within the dotted box E.

[0083] Each input pad group D includes a positive input pad 131 , the first metal layer 12 further includes a positive trace 123 , and the second metal layer 13 further includes a positive lead 133 ;

[0084] Each positive electrode connection pad 121 electrically connected to the piezoelectric actuators 2 of the same group is electrically connected to the corresponding positive electrode input pad 131 through at least one positive electrode trace 123 and at least one positive electrode lead wire 133 .

[0085] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiments of the present disclosure, as shown in Figures 1 and 3, each input pad group D also includes a negative input pad 132, the first metal layer 12 also includes a negative wiring 124, and the second metal layer 13 also includes a negative lead wire 134; each negative connection pad 122 electrically connected to the piezoelectric actuator 2 of the same group is electrically connected to the corresponding negative input pad 132 through at least one negative wiring 124 and at least one negative lead wire 134.

[0086] In this way, the positive lead structure 21 of the piezoelectric actuator 2 is connected to the external PCB through the positive connection pad 121 on the first surface A of the FPC, the positive lead line 123, the positive lead line 133 on the second surface B, and the positive input pad 131. The PCB inputs a positive driving signal to the positive lead structure 21 of the piezoelectric actuator 2 through the positive input pad 131, the positive lead line 133, the positive lead line 123, and the positive connection pad 121. The negative lead structure 21 of the piezoelectric actuator 2 is connected to the external PCB through the positive connection pad 131, the positive lead line 133, the positive lead line 123, and the positive connection pad 121. The structure 22 is connected to the external PCB through the negative connecting pad 122 on the first surface A of the FPC, the negative wiring 124 and the negative lead-out wire 134 and the negative input pad 132 on the second surface B. The PCB inputs a negative driving signal to the negative lead-out structure 22 of the piezoelectric actuator 2 through the negative input pad 132, the negative lead-out wire 134, the negative wiring 124 and the negative connecting pad 122; in this way, the piezoelectric actuator 2 vibrates under the excitation of the driving signal to produce tactile feedback.

[0087] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4-FIG7 , the flexible circuit board 1 includes a hollow area AA and a solid area BB surrounding the hollow area AA, and a plurality of connection pad groups C are arranged around the hollow area AA;

[0088] The physical area BB includes a first physical area B1 and a second physical area B2 located on opposite sides of the hollow area AA in a first direction X. The physical area BB also includes a third physical area B3 and a fourth physical area B4 located on opposite sides of the hollow area AA in a second direction Y. The first direction X is perpendicular to the second direction Y.

[0089] The plurality of piezoelectric actuators 2 include: a first group of piezoelectric actuators located in the first physical area B1 and the second physical area B2, and a second group of piezoelectric actuators located in the third physical area B3 and the fourth physical area B4;

[0090] The multiple piezoelectric actuators 2 of the first physical area B1 and the second physical area B2 are respectively located in at least the same row and each row is arranged sequentially along the second direction Y. The multiple piezoelectric actuators 2 of the third physical area B3 and the fourth physical area B4 are respectively located in at least the same row and each row is arranged sequentially along the first direction X.

[0091] Specifically, as shown in FIG. 1 and FIG. 4 to FIG. 7 , the embodiment of the present disclosure takes the example that the first physical area B1 and the second physical area B2 each include only one row of piezoelectric actuators 2 , but is certainly not limited thereto.

[0092] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiments of the present disclosure, as shown in Figures 1 and 4, each piezoelectric actuator 2 in the first physical area B1, the second physical area B2, the third physical area B3 and the fourth physical area B4 corresponds to the connection pad group C one by one, respectively, and the positive connection pads 121 corresponding to the piezoelectric actuators 2 in the same row in the first physical area B1 and the second physical area B2 are located in the same row and arranged along the second direction Y, and the negative connection pads 122 corresponding to the piezoelectric actuators 2 in the same row in the first physical area B1 and the second physical area B2 are located in the same row and arranged along the second direction Y; the positive connection pads 121 corresponding to the piezoelectric actuators 2 in the same row in the third physical area B3 and the fourth physical area B4 are located in the same row and arranged along the first direction X, and the negative connection pads 122 corresponding to the piezoelectric actuators 2 in the same row in the third physical area B3 and the fourth physical area B4 are located in the same row and arranged along the first direction X. This ensures that piezoelectric actuators 2 are provided at various positions of the first physical area B1 and the second physical area B2. When the tactile feedback component is integrated in the peripheral area of ​​the cover, the tactile feedback effect is improved, and the piezoelectric actuators 2 are provided in the same row to achieve a narrow frame.

[0093] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4 , all positive electrode connection pads 121 located in the first physical area B1 are located in the same row and arranged sequentially along the second direction Y, all negative electrode connection pads 122 located in the first physical area B1 are located in the same row and arranged sequentially along the second direction Y, the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the first physical area B1 are located in different rows, and the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the first physical area B1 are arranged alternately along the second direction Y. This facilitates electrical connection between the positive electrode traces 123 and the positive electrode connection pads 121 and the negative electrode traces 124 and the negative electrode connection pads 122.

[0094] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4 , all positive electrode connection pads 121 located in the second physical area B2 are located in the same row and arranged sequentially along the second direction Y, all negative electrode connection pads 122 located in the second physical area B2 are located in the same row and arranged sequentially along the second direction Y, the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the second physical area B2 are located in different rows, and the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the second physical area B2 are alternately arranged along the second direction Y. This facilitates electrical connection between the positive electrode traces 123 and the positive electrode connection pads 121 and the negative electrode traces 124 and the negative electrode connection pads 122.

[0095] In some embodiments, in the above-mentioned tactile feedback component provided by an embodiment of the present disclosure, as shown in FIG1 , the physical area BB further includes a fifth physical area B5 , which is located on the side of the first physical area B1 away from the second physical area B2 , and each input pad group D can be located in the fifth physical area B5 .

[0096] In some embodiments, in the tactile feedback component provided by an embodiment of the present disclosure, as shown in FIG. 1 , the fifth physical area B5 may be located at an edge of the first physical area B1 and close to the third physical area B3 .

[0097] In this way, by dividing the annular physical area BB into two areas, some physical areas can be controlled to be driven at high frequency and other physical areas can be driven at low frequency according to the tactile effects required by different areas. For example, the first physical area B1 and the second physical area B2 can be driven at high frequency, and the third physical area B3 and the fourth physical area B4 can be driven at low frequency, thereby achieving different tactile feedback effects.

[0098] In some embodiments, in the haptic feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG8 , FIG8 is an enlarged schematic diagram of the fifth physical area B5 and its surrounding area in FIG1 , the input pad group D includes a first input pad group D1 corresponding to the first group of piezoelectric actuators. The first input pad group D1 can be located at a corner of the fifth physical area B5 near the fourth physical area B4. The first input pad group D1 includes a first positive input pad A1+ and a first negative input pad A1− arranged along the second direction Y. The first positive input pad A1+ can be near the fourth physical area B4. In this way, all positive connection pads 121 of the first physical area B1 and the second physical area B2 can be electrically connected to the first positive input pad A1+ via at least one positive trace 123 and at least one positive lead line 133, and all negative connection pads 122 of the first physical area B1 and the second physical area B2 can be electrically connected to the first negative input pad A1− via at least one negative trace 124 and at least one negative lead line 134.

[0099] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiments of the present disclosure, as shown in Figures 1 and 5, Figure 5 only schematically illustrates the wiring and lead-out structure corresponding to the first physical area B1 and the second physical area B2 in Figure 1. The positive wiring 123 corresponding to the first group of piezoelectric actuators and the positive lead-out line 133 are electrically connected through vias penetrating the flexible substrate 11; for example, the positive wiring 123 corresponding to the first group of piezoelectric actuators is a first positive wiring 1231 that is sequentially routed along the first physical area B1, the fourth physical area B4, and the second physical area B2, and is located at the first physical area B1. All positive electrode connection pads 121 of the first physical area B1 and the second physical area B2 are electrically connected to the first positive electrode trace 1231. For example, the positive electrode lead 133 corresponding to the first group of piezoelectric actuators is the first positive electrode lead 1331 located in the fifth physical area B5 and extending along the first direction X. One end of the first positive electrode lead 1331 is electrically connected to the first positive electrode input pad A1+, and the other end of the first positive electrode lead 1331 extends to the first physical area B1 and is electrically connected to the first positive electrode trace 1231 through a via (V1) penetrating the flexible substrate 11.

[0100] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG5 , the negative electrode traces 124 and the negative electrode lead 134 corresponding to the first group of piezoelectric actuators are electrically connected through vias penetrating the flexible substrate 11; for example, the negative electrode traces 124 corresponding to the first group of piezoelectric actuators include: a first negative electrode trace 1241 located in the first physical area B1 and extending along the second direction Y, and a second negative electrode trace 1242 along the fourth physical area B4 and the second physical area B2; for example, the negative electrode lead 134 corresponding to the first group of piezoelectric actuators include: a first negative electrode trace 1341 intersecting the orthographic projection of the first positive electrode trace 1231 at the corner of the first physical area B1 and the fourth physical area B4, and a first positive electrode trace 1341 located on the side of the first positive electrode trace 1331 close to the third physical area B3 and extending along the first direction X. Two negative lead lines 1342; wherein, all negative connection pads 122 located in the first physical area B1 are connected to the first negative electrode trace 1241 electrode, and all negative connection pads 122 located in the second physical area B2 are connected to the second negative electrode trace 1242 electrode; one end of the first negative electrode trace 1241 near the fourth physical area B4 is electrically connected to one end of the first negative lead line 1341 through a via (V2) penetrating the flexible substrate 11, and the other end of the first negative electrode lead line 1341 is electrically connected to the second negative electrode trace 1242 through a via (V3) penetrating the flexible substrate 11; one end of the second negative electrode lead line 1342 is electrically connected to the first negative input pad A1-, and the other end of the second negative electrode lead line 1342 extends to the first physical area B1 and is electrically connected to the first negative electrode trace 1241 through a via (V4) penetrating the flexible substrate 11.

[0101] Specifically, as shown in Figures 1 and 5, the positive electrode wiring (1231) and the negative electrode wiring (1241, 1242) corresponding to the first group of piezoelectric actuators are insulated from each other, and the positive electrode lead wires (1331) and the negative electrode lead wires (1341, 1342) corresponding to the first group of piezoelectric actuators are insulated from each other.

[0102] In this way, the positive lead structures 21 of all the piezoelectric actuators 2 in the first physical area B1 and the second physical area B2 are connected in parallel, and the negative lead structures 22 of all the piezoelectric actuators 2 in the first physical area B1 and the second physical area B2 are connected in parallel. By driving all the piezoelectric actuators 2 in the first physical area B1 and the second physical area B2 together, the tactile feedback effect can be improved, and the first physical area B1 and the second physical area B2 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements. For example, a ground voltage signal is applied to the first negative input pad A1- through the PCB, and the ground voltage signal is transmitted to the negative lead-out structure 22 of each piezoelectric actuator 2 through the first negative input pad A1-, the first negative trace 1241, the first negative lead-out line 1341, the second negative trace 1242 and the negative connection pad 122. An AC voltage signal is applied to the first positive input pad A1+, and the AC voltage signal is transmitted to the positive lead-out structure 21 of each piezoelectric actuator 2 through the first positive input pad A1+, the first positive lead-out line 1331, the first positive trace 1231 and the positive connection pad 121. In this way, an alternating electric field can be formed between the positive lead-out structure 21 of the piezoelectric actuator 2 and the negative lead-out structure 22 of the piezoelectric actuator 2. Under the action of the alternating electric field, the piezoelectric actuator 2 generates vibration to achieve tactile feedback.

[0103] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4-FIG7 , the third physical area B3 is divided into a first sub-physical area B31 and a second sub-physical area B32 along the first direction X, and the fourth physical area B4 is divided into a third sub-physical area B41 and a fourth sub-physical area B42 along the first direction X. The first sub-physical area B31 and the third sub-physical area B41 are close to the second physical area B2, and the second sub-physical area B32 and the fourth sub-physical area B42 are close to the first physical area B1;

[0104] The second group of piezoelectric actuators includes: a first subgroup of piezoelectric actuators located in the first sub-physical area B31 and the third sub-physical area B41, and a second subgroup of piezoelectric actuators B42 located in the second sub-physical area B32 and the fourth sub-physical area;

[0105] The positive electrode wiring 123 and the negative electrode wiring 124 corresponding to the first subgroup piezoelectric actuator and the second subgroup piezoelectric actuator are different, and the positive electrode lead wires 133 and the negative electrode lead wires 134 corresponding to the first subgroup piezoelectric actuator and the second subgroup piezoelectric actuator are different.

[0106] In this way, by further dividing the annular physical area BB into three areas, some physical areas can be controlled to be driven at high frequencies and other physical areas can be driven at low frequencies according to the tactile effects required by different areas. For example, the first physical area B1 and the second physical area B2 can be driven at high frequencies, and the first sub-physical area B31, the second sub-physical area B32, the third sub-physical area B41 and the fourth sub-physical area B42 can be driven at low frequencies, thereby achieving different tactile feedback effects.

[0107] In some embodiments, in the tactile feedback assembly provided in the embodiments of the present disclosure, as shown in FIG1 and FIG4 , the first sub-entity area B31 and the third sub-entity area B41 each include a plurality of piezoelectric actuators 2. The plurality of piezoelectric actuators 2 in the first sub-entity area B31 are located in different rows, and each row is sequentially arranged along the first direction X. The plurality of piezoelectric actuators 2 in the third sub-entity area B41 are located in different rows, and each row is sequentially arranged along the first direction X. For example, in the embodiments of the present disclosure, the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 are arranged in two rows, which can increase the number of piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41, thereby improving the tactile feedback effect.

[0108] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4 , the positive electrode connection pads 121 corresponding to different rows of piezoelectric actuators 2 located in the first sub-physical area B31 are aligned along the second direction Y, and the negative electrode connection pads 122 corresponding to different rows of piezoelectric actuators 2 located in the first sub-physical area B31 are aligned along the second direction Y. The positive electrode connection pads 121 and the negative electrode connection pads 122 in the same row of the first sub-physical area B31 are alternately arranged along the first direction X. This facilitates the use of the same positive electrode trace 123 to electrically connect all the positive electrode connection pads 121 of the first sub-physical area B31, and the use of the same negative electrode trace 124 to electrically connect all the negative electrode connection pads 122 of the first sub-physical area B31, thereby achieving the simultaneous driving of all the piezoelectric actuators 2 in the first sub-physical area B31.

[0109] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4 , the positive electrode connection pads 121 corresponding to different rows of piezoelectric actuators 2 located in the third sub-physical area B41 are aligned along the second direction Y, and the negative electrode connection pads 122 corresponding to different rows of piezoelectric actuators 2 located in the third sub-physical area B41 are aligned along the second direction Y. The positive electrode connection pads 121 and the negative electrode connection pads 122 in the same row of the third sub-physical area B41 are alternately arranged along the first direction X. This facilitates electrically connecting all the positive electrode connection pads 121 of the third sub-physical area B41 using the same positive electrode trace 123 and electrically connecting all the negative electrode connection pads 122 of the third sub-physical area B41 using the same negative electrode trace 124, thereby achieving the simultaneous driving of all the piezoelectric actuators 2 in the third sub-physical area B41.

[0110] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiments of the present disclosure, as shown in Figures 1 and 8, the input pad group D also includes a second input pad group D2 corresponding to the first sub-group piezoelectric actuator, and the second input pad group D2 is located in the middle area of ​​the fifth physical area B5. The second input pad group D2 includes a second positive input pad A2+ and a second negative input pad A2- arranged along the second direction Y, and the second positive input pad 1312 is close to the fourth physical area B4; in this way, all the positive connection pads 121 of the first sub-physical area B31 and the third sub-physical area B41 can be electrically connected to the second positive input pad A2+ through at least one positive trace 123 and at least one positive lead line 133, and all the negative connection pads 122 of the first sub-physical area B31 and the third sub-physical area B41 can be electrically connected to the second negative input pad A2- through at least one negative trace 124 and at least one negative lead line 134.

[0111] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiments of the present disclosure, as shown in Figures 1 and 6, Figure 6 only illustrates the wiring and lead-out structure corresponding to the first sub-entity area B31 and the third sub-entity area B41 in Figure 1, and the positive electrode wiring 123 and the positive lead-out line 133 corresponding to the first sub-group piezoelectric actuator are electrically connected through a via penetrating the flexible substrate 11; for example, the positive electrode wiring 123 corresponding to the first sub-group piezoelectric actuator includes: a second positive electrode wiring 1232 located in the first sub-entity area B31 and extending along the first direction X, and a third positive electrode wiring 1233 located in the third sub-entity area B41 and extending along the first direction X; In the figure, the second positive electrode trace 1232 is located on the side of the first sub-entity area B31 close to the hollow area AA, and the third positive electrode trace 1233 is located on the side of the third sub-entity area B41 away from the hollow area AA; for example, the positive electrode lead 133 corresponding to the first sub-group piezoelectric actuator includes: a second positive electrode lead 1332 located in the second entity area B2 and extending along the second direction Y, and a third positive electrode lead 1333 located in the second sub-entity area B32 and extending to the fifth entity area B5 along the shape of the second sub-entity area B32; wherein the second positive electrode lead 1332 is located on the side of all the connection pad groups C in the second entity area B2 close to the hollow area AA.

[0112] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiment of the present disclosure, as shown in Figures 1 and 6, every two positive electrode connection pads 121 arranged along the second direction Y in the first sub-entity area B31 are electrically connected to the second positive electrode trace 1232 through the first connection line 1251 located in the first metal layer 12, and every two positive electrode connection pads 121 arranged along the second direction Y in the third sub-entity area B41 are electrically connected to the third positive electrode trace 1233 through the second connection line 1252 located in the first metal layer 12, and the second positive electrode trace 1232 is close to the second sub-entity area B41. One end of the body area B2 is electrically connected to one end of the second positive lead 1332 via a via (V5) penetrating the flexible substrate 11. The other end of the second positive lead 1332 is electrically connected to an end of the third positive trace 1233 near the second physical area B2 via a via (V6) penetrating the flexible substrate 11. An end of the second positive trace 1232 near the second sub-physical area B32 is electrically connected to one end of the third positive lead 1333 via a via (V7) penetrating the flexible substrate 11. The other end of the third positive lead 1333 is electrically connected to the second positive input pad A2+.

[0113] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiments of the present disclosure, as shown in Figures 1 and 6, the negative electrode trace 124 corresponding to the first subgroup piezoelectric actuator and the negative electrode lead 134 are electrically connected through a via penetrating the flexible substrate 11; for example, the negative electrode trace 124 corresponding to the first subgroup piezoelectric actuator includes: a third negative electrode trace 1243 located in the first sub-substance area B31 and extending along the first direction X, and a fourth negative electrode trace 1244 located in the third sub-substance area B41 and extending along the first direction X; wherein the third negative electrode trace 1243 is located in the first sub-substance area B31 and extending along the first direction X. The body area B31 is located on a side away from the hollow area AA, and the fourth negative electrode trace 1244 is located on a side of the third sub-entity area B41 close to the hollow area AA; for example, the negative electrode lead 134 corresponding to the first sub-group piezoelectric actuator includes: a third negative electrode lead 1343 located in the second entity area B2 and extending along the second direction Y, and a fourth negative electrode lead 1344 located in the second sub-entity area B32 and extending along the shape of the second sub-entity area B32; wherein the third negative electrode lead 1343 is located between all the connecting pad groups C of the second entity area B2 and the second positive electrode lead 1332.

[0114] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiment of the present disclosure, as shown in Figures 1 and 6, every two negative electrode connection pads 122 arranged along the second direction Y in the first sub-entity area B31 are electrically connected to the third negative electrode trace 1243 through the third connection line 1253 located in the first metal layer 12, and every two negative electrode connection pads 122 arranged along the second direction Y in the third sub-entity area B41 are electrically connected to the fourth negative electrode trace 1244 through the fourth connection line 1254 located in the first metal layer 12, and the third negative electrode trace 1243 is close to the second entity. One end of area B2 is electrically connected to one end of the third negative lead 1343 via a via (V8) penetrating the flexible substrate 11. The other end of the third negative lead 1343 is electrically connected to an end of the fourth negative trace 1244 near the second physical area B2 via a via (V9) penetrating the flexible substrate 11. An end of the third negative trace 1243 near the second sub-physical area B32 is electrically connected to one end of the fourth negative lead 1344 via a via (V10) penetrating the flexible substrate 11. The other end of the fourth negative lead 1344 is electrically connected to the second negative input pad A2-.

[0115] Specifically, as shown in Figures 1 and 6, the positive wirings (1232, 1233) and the negative wirings (1243, 1244) corresponding to the first subgroup of piezoelectric actuators are insulated from each other, and the positive lead wires (1332, 1333) and the negative lead wires (1343, 1344) corresponding to the second subgroup of piezoelectric actuators are insulated from each other.

[0116] In this way, the positive lead structures 21 of all the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 are connected in parallel, and the negative lead structures 22 of all the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 are connected in parallel. By driving all the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 together, the tactile feedback effect can be improved, and the first sub-entity area B31 and the third sub-entity area B41 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements. For example, a ground voltage signal is applied to the second negative input pad A2- through the PCB, and the ground voltage signal is transmitted to the negative lead structure 22 of each piezoelectric actuator 2 through the second negative input pad A2-, the fourth negative lead line 1344, the third negative lead line 1243, the third negative lead line 1343 and the fourth negative lead line 1244 and the negative connection pad 122, and an AC voltage signal is applied to the second positive input pad A2+, and the AC voltage signal is transmitted to the second positive input pad A2- through the second negative input pad A2-. The positive input pad A2+, the third positive lead 1333, the second positive trace 1232, the second positive lead 1332, the third positive trace 1233 and the positive connection pad 121 are transmitted to the positive lead structure 21 of each piezoelectric actuator 2, so that an alternating electric field can be formed between the positive lead structure 21 of the piezoelectric actuator 2 and the negative lead structure 22 of the piezoelectric actuator 2. Under the action of the alternating electric field, the piezoelectric actuator 2 generates vibration to achieve tactile feedback.

[0117] In some embodiments, in the tactile feedback assembly provided in the embodiments of the present disclosure, as shown in FIG1 and FIG4 , the second sub-entity area B32 and the fourth sub-entity area B42 each include a plurality of piezoelectric actuators 2. The plurality of piezoelectric actuators 2 of the second sub-entity area B32 are located in the same row and arranged sequentially along the first direction X. The plurality of piezoelectric actuators 2 of the fourth sub-entity area B42 are located in the same row and arranged sequentially along the first direction X. This ensures that a piezoelectric actuator 2 is provided at each position of the second sub-entity area B32 and the fourth sub-entity area B42. When the tactile feedback assembly is integrated in the peripheral area of ​​the cover plate, the tactile feedback effect is improved. In addition, the piezoelectric actuators 2 arranged in the same row can achieve a local narrow frame.

[0118] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4 , all positive electrode connection pads 121 located in the second sub-physical area B32 are located in the same row and arranged sequentially along the first direction X, all negative electrode connection pads 122 located in the second sub-physical area B32 are located in the same row and arranged sequentially along the first direction X, the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the second sub-physical area B32 are located in different rows, and the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the second sub-physical area B32 are alternately arranged along the first direction X. This facilitates electrical connection between the positive electrode trace 123 and the positive electrode connection pad 121, and electrical connection between the negative electrode trace 124 and the negative electrode connection pad 122.

[0119] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG4 , all positive electrode connection pads 121 located in the fourth sub-physical area B42 are located in the same row and arranged sequentially along the first direction X, all negative electrode connection pads 122 located in the fourth sub-physical area B42 are located in the same row and arranged sequentially along the first direction X, the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the fourth sub-physical area B42 are located in different rows, and the positive electrode connection pads 121 and the negative electrode connection pads 122 located in the fourth sub-physical area B42 are alternately arranged along the first direction X. This facilitates electrical connection between the positive electrode trace 123 and the positive electrode connection pad 121 and electrical connection between the negative electrode trace 124 and the negative electrode connection pad 122.

[0120] In some embodiments, in the haptic feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG8 , the input pad group D further includes a third input pad group D3 corresponding to the second sub-group piezoelectric actuators. The third input pad group D3 is located at a corner of the fifth physical area B5 near the third physical area B3. The third input pad group D3 includes a third positive input pad B1+ and a third negative input pad B1− arranged along the second direction Y. The third positive input pad B1+ is located near the fourth physical area B4. In this way, all positive connection pads 121 of the second sub-physical area B32 and the fourth sub-physical area B42 can be electrically connected to the third positive input pad B1+ via at least one positive trace 123 and at least one positive lead line 133, and all negative connection pads 122 of the second sub-physical area B32 and the fourth sub-physical area B42 can be electrically connected to the third negative input pad B1− via at least one negative trace 124 and at least one negative lead line 134.

[0121] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG7 , FIG7 only illustrates the wiring and lead structure corresponding to the second sub-sub-physical area B32 and the fourth sub-physical area B42 in FIG1 , and the positive electrode wiring 123 and the positive lead 133 corresponding to the second sub-group piezoelectric actuator are electrically connected via a via penetrating the flexible substrate 11; for example, the positive electrode wiring 123 corresponding to the second sub-group piezoelectric actuator includes: a fourth positive electrode wiring 1234 sequentially routed along the second sub-physical area B32, the first sub-physical area B31, and the second sub-physical area B2, and a fifth positive electrode wiring 1235 located in the fourth sub-physical area B42 and extending along the first direction X; wherein the fourth positive electrode wiring 1234 is located on a side of the second sub-physical area B32, the first sub-physical area B31, and the second sub-physical area B2 close to the hollow area AA, and the fifth positive electrode wiring 1235 is located on a side of the fourth sub-physical area B42 away from the hollow area AA;

[0122] For example, the positive lead line 133 corresponding to the second sub-group piezoelectric actuator includes: a fourth positive lead line 1334 located in the third sub-entity area B41 and extending along the first direction X, and a fifth positive lead line 1335 located between one end of the fourth positive line 1234 close to the third positive input pad B1+ and the third positive input pad B1+.

[0123] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in Figures 1 and 7, all positive connection pads 121 located in the second sub-physical area B32 are electrically connected to the fourth positive trace 1234, and all positive connection pads 121 located in the fourth sub-physical area B42 are electrically connected to the fifth positive trace 1235. An end of the fourth positive trace 1234 near the third sub-physical area B41 is electrically connected to one end of a fourth positive lead wire 1334 through a via (V11) penetrating the flexible substrate 11. The other end of the fourth positive lead wire 1334 is electrically connected to the fifth positive trace 1235 through a via (V12) penetrating the flexible substrate 11. An end of the fourth positive trace 1234 near the first physical area B1 is electrically connected to one end of the fifth positive lead wire 1335 through a via (V13) penetrating the flexible substrate 11. The other end of the fifth positive lead wire 1335 is electrically connected to the third positive input pad B1+.

[0124] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG1 and FIG7 , the negative electrode trace 124 corresponding to the second subgroup of piezoelectric actuators and the negative electrode lead 134 are electrically connected via a via penetrating the flexible substrate 11. For example, the negative electrode trace 124 corresponding to the second subgroup of piezoelectric actuators includes: a fifth negative electrode trace 1245 sequentially routed along the second sub-physical area B32, the first sub-physical area B31, and the second sub-physical area B2, and a sixth negative electrode trace 1246 located in the fourth sub-physical area B42 and extending along the first direction X; wherein the fifth negative electrode trace 1245 is located between the fourth positive electrode trace 1234 and the connection pad group C, and the sixth negative electrode trace 1246 is located on a side of the fourth sub-physical area B42 close to the hollow area AA.

[0125] For example, the negative lead line 134 corresponding to the second sub-group piezoelectric actuator includes: a fifth negative lead line 1345 located in the third sub-entity area B41 and extending along the first direction X, and a sixth negative lead line 1346 located between one end of the fifth negative line 1245 close to the third negative input pad B1- and the third negative input pad B1-.

[0126] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in Figures 1 and 7, all negative electrode connection pads 122 located in the second sub-physical area B32 are electrically connected to the fifth negative electrode trace 1245, and all negative electrode connection pads 122 located in the fourth sub-physical area B42 are electrically connected to the sixth negative electrode trace 1246. An end of the fifth negative electrode trace 1245 near the third sub-physical area B41 is electrically connected to one end of the fifth negative electrode lead line 1345 through a via (V14) penetrating the flexible substrate 11, and the other end of the fifth negative electrode lead line 1345 is electrically connected to the sixth negative electrode trace 1246 through a via (V15) penetrating the flexible substrate 11. An end of the fifth negative electrode trace 1245 near the first physical area B1 is electrically connected to one end of the sixth negative electrode lead line 1346 through a via (V16) penetrating the flexible substrate 11, and the other end of the sixth negative electrode lead line 1346 is electrically connected to the third negative input pad B1-.

[0127] Specifically, as shown in Figures 1 and 7, the positive wirings (1234, 1235) and the negative wirings (1245, 1246) corresponding to the second sub-group piezoelectric actuators are insulated from each other, and the positive lead wires (1334, 1335) and the negative lead wires (1345, 1346) corresponding to the second sub-group piezoelectric actuators are insulated from each other.

[0128] In this way, the positive lead structures 21 of all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 are connected in parallel, and the negative lead structures 22 of all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 are connected in parallel. By driving all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 together, the tactile feedback effect can be improved, and the second sub-entity area B32 and the fourth sub-entity area B42 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements. For example, a ground voltage signal is applied to the third negative input pad B1- through the PCB, and the ground voltage signal is transmitted to the negative lead structure 22 of each piezoelectric actuator 2 through the third negative input pad B1-, the sixth negative lead line 1346, the fifth negative lead line 1245, the fifth negative lead line 1345, the second negative lead line 1246 and the negative connection pad 122, and an AC voltage signal is applied to the third positive input pad B1+, and the AC voltage signal is transmitted to the third positive input pad B1- through the third negative input pad B1-. The positive input pad B1+, the fifth positive lead 1335, the fourth positive trace 1234, the fourth positive lead 1334, the fifth positive trace 1235 and the positive connection pad 121 are transmitted to the positive lead structure 21 of each piezoelectric actuator 2, so that an alternating electric field can be formed between the positive lead structure 21 of the piezoelectric actuator 2 and the negative lead structure 22 of the piezoelectric actuator 2. Under the action of the alternating electric field, the piezoelectric actuator 2 generates vibration to achieve tactile feedback.

[0129] It should be noted that the three groups of piezoelectric actuators provided in the embodiment of the present disclosure are connected to the corresponding input pad groups through the routing located on the first metal layer and the lead-out wires on the second metal layer. The connection of each group is only one of the ways. It is sufficient to reasonably arrange the routing and lead-out wire positions corresponding to the three groups of piezoelectric actuators so that there is no short circuit between the groups.

[0130] In some embodiments, in the above-mentioned tactile feedback component provided in the embodiments of the present disclosure, as shown in Figures 1 and 4-7, the second sub-entity area B32 includes a vertical portion extending along the first direction X and an inclined portion connecting the vertical portion and the first entity area B1, and the second sub-group piezoelectric actuator is located in the vertical portion. Of course, it is not limited to this. For example, the second sub-entity area B32 only includes the vertical portion connecting the first sub-entity area B31 and the first entity area B1, and is set according to the shape of the display area of ​​the display.

[0131] Optionally, as shown in Figures 1, 5-7, the first physical area B1 and the second physical area B2 can be driven at high frequency, the first sub-physical area B31 and the third sub-physical area B41 can be driven at low frequency, the second sub-physical area B32 and the fourth sub-physical area B42 can be driven at low frequency, and the frequencies corresponding to each area in other schemes will also be adjusted accordingly according to different tactile effects.

[0132] Optionally, each input pad group (D1, D2, D3) can be connected to an external driving circuit (PCB) through wires or FPC. The driving signal emitted by the PCB reaches the positive and negative lead structures of each piezoelectric actuator through the input pad group and the wiring, driving the piezoelectric actuator to generate corresponding tactile signals.

[0133] It should be noted that the piezoelectric actuators 2 shown in Figure 1 are divided into three groups, but this is not a limitation. Each of the upper, lower, left, and right physical regions can be divided into three or more groups, with different groups driven by different drive signals, facilitating precise control of the vibration effect. However, the greater the number of groups in which the piezoelectric actuators 2 are divided, the wider the flexible circuit board will be. This will occupy more frame space when integrated with a display, hindering the realization of a narrow frame.

[0134] It should be noted that in FIG1 of the embodiment of the present disclosure, each group of piezoelectric actuators 2 is connected in parallel. Of course, each group of piezoelectric actuators 2 can also be connected in series to achieve overall drive of the piezoelectric actuators 2. Compared with overall parallel drive, overall series drive can reduce power consumption.

[0135] In some embodiments, in the tactile feedback assembly provided in the embodiments of the present disclosure, as shown in FIG3 , the shape of the piezoelectric actuator 2 is rectangular, but it can also be other shapes such as circular, and can be designed according to needs.

[0136] In some embodiments, in the above-mentioned tactile feedback component provided in the embodiments of the present disclosure, the structure of the piezoelectric actuator is a piezoelectric film or a piezoelectric ceramic block. By using the piezoelectric film or the piezoelectric ceramic block, a given piezoelectric actuator voltage can directly provide vibration excitation. By utilizing the resonant frequency of some components of the screen module, the structure can generate ultrasonic vibration, so that the tactile feedback component produces a tactile feedback effect, and the tactile feedback can be adjusted by the squeeze film effect.

[0137] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiment of the present disclosure, as shown in Figures 9 and 10, Figure 9 is a top view schematic diagram of a flexible circuit board in another tactile feedback component provided by the embodiment of the present disclosure, and Figure 10 is a partition schematic diagram of the piezoelectric actuator connected to the flexible circuit board in Figure 9. The difference between Figure 9 and the structure shown in Figure 1 provided by the embodiment of the present disclosure is that the arrangement of the piezoelectric actuator 2 in the first sub-entity area B31 and the third sub-entity area B41 is different and the wiring connection is slightly different.

[0138] Specifically, as shown in FIG9 and FIG10 , the plurality of piezoelectric actuators 2 of the first sub-sub ...

[0139] The multiple piezoelectric actuators 2 of the third sub-entity area B41 are located in the same row and arranged in sequence along the first direction X. The negative connecting pad 122 of each piezoelectric actuator 2 of the third sub-entity area B41 is close to the outer edge of the third sub-entity area B41 and arranged along the first direction X. The positive connecting pad 121 of each piezoelectric actuator 2 of the third sub-entity area B41 is close to the inner edge of the third sub-entity area B41 and arranged along the first direction X.

[0140] Specifically, as shown in Figures 9 to 11, Figure 11 shows the wiring and lead-out structure corresponding to the first sub-entity area B31 and the third sub-entity area B41 in Figure 9 only. All the positive connection pads 121 located in the first sub-entity area B31 are directly electrically connected to the second positive wiring 1232, all the positive connection pads 121 located in the third sub-entity area B41 are directly electrically connected to the third positive wiring 1233, all the negative connection pads 122 located in the first sub-entity area B31 are directly electrically connected to the third negative wiring 1243, and all the negative connection pads 122 located in the third sub-entity area B41 are directly electrically connected to the fourth negative wiring 1244; the connection method of the positive lead-out lines and the negative lead-out lines corresponding to the first sub-entity area B31 and the third sub-entity area B41 is the same as that in Figure 1, and please refer to the relevant description in Figure 1 for details.

[0141] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiment of the present disclosure, as shown in Figure 12, Figure 12 is a top view schematic diagram of a flexible circuit board in another tactile feedback component provided by the embodiment of the present disclosure. One difference between Figure 12 and the structure shown in Figure 1 provided by the embodiment of the present disclosure is that: the fifth physical area B5 is located at the edge of the first physical area B1 and close to the fourth physical area B4. Another difference is that the specific connection methods of the routing lines and lead lines corresponding to each group of piezoelectric actuators are different.

[0142] Specifically, as shown in Figures 12, 13 and 16, Figure 13 is a wiring and lead-out structure corresponding to only the first physical area B1 and the second physical area B2 in Figure 12, and Figure 16 is an enlarged schematic diagram of the fifth physical area B5 and its surroundings in Figure 12. For example, the positive electrode wiring 123 corresponding to the first group of piezoelectric actuators includes: a first positive electrode wiring 1231 located in the first physical area B1 and extending along the second direction Y, and a second positive electrode wiring 1232 located in the second physical area B2 and extending along the second direction Y; the first positive electrode wiring 1231 is located on a side of the first physical area B1 close to the hollow area AA, and the second positive electrode wiring 1232 is located on a side of the second physical area B2 away from the hollow area AA, all the positive electrode connection pads 121 in the first physical area B1 are electrically connected to the first positive electrode wiring 1231, and all the positive electrode connection pads 121 located in the second physical area B2 are electrically connected to the second positive electrode wiring 1232; for example, the first The positive lead wire 133 corresponding to the piezoelectric actuator group includes: a first positive lead wire 1331 that is arranged along the third physical area B3 and follows the shape of the third physical area B3, and a second positive lead wire 1332 that is located in the fifth physical area B5 and extends along the first direction X; one end of the second positive lead wire 1332 is electrically connected to the first positive input pad A1+, and the other end of the second positive lead wire 1332 extends to the first physical area B1 and passes through the flexible substrate. The via (V1) of the flexible substrate 11 is electrically connected to the first positive electrode trace 1231. The end of the first positive electrode trace 1231 close to the first positive electrode lead line 1331 extends to the second sub-body area B32 and is electrically connected to the first positive electrode lead line 1331 through the via (V2) penetrating the flexible substrate 11. The end of the first positive electrode lead line 1331 close to the second positive electrode trace 1232 is electrically connected to the second positive electrode trace 1232 through the via (V3) penetrating the flexible substrate 11.

[0143] Specifically, as shown in Figures 12, 13 and 16, for example, the negative electrode trace 124 corresponding to the first group of piezoelectric actuators includes: a first negative electrode trace 1241 located in the first physical area B1 and extending along the second direction Y, and a second negative electrode trace 1242 located in the second physical area B2 and extending along the second direction Y; the first negative electrode trace 1241 is located on the side of the first physical area B1 away from the hollow area AA, and the second negative electrode trace 1242 is located on the side of the second physical area B2 close to the hollow area AA, all the negative electrode connection pads 122 in the first physical area B1 are electrically connected to the first negative trace 1241, and all the negative electrode connection pads 122 located in the second physical area B2 are electrically connected to the second negative trace 1242; for example, the negative electrode lead-out line 134 corresponding to the first group of piezoelectric actuators includes: a first negative electrode trace 1241 extending along the third physical area B3 and extending along the third physical area B4. The first negative lead line 1341 of the shape wiring of the three physical areas B3 and the second negative lead line 1342 located in the fifth physical area B5 and extending along the first direction X; one end of the second negative lead line 1342 is electrically connected to the first negative input pad A1-, and the other end of the second negative lead line 1332 extends to the first physical area B1 and is electrically connected to the first negative lead line 1241 through a via (V4) penetrating the flexible substrate 11. The end of the first negative lead line 1241 closest to the first negative lead line 1341 extends to the second sub-physical area B32 and is electrically connected to the first negative lead line 1341 through a via (V5) penetrating the flexible substrate 11. The end of the first negative lead line 1341 closest to the second negative lead line 1242 is electrically connected to the second negative lead line 1242 through a via (V6) penetrating the flexible substrate 11.

[0144] In this way, the positive lead structures 21 of all the piezoelectric actuators 2 in the first entity area B1 and the second entity area B2 are connected in parallel, and the negative lead structures 22 of all the piezoelectric actuators 2 in the first entity area B1 and the second entity area B2 are connected in parallel. By driving all the piezoelectric actuators 2 in the first entity area B1 and the second entity area B2 together, the tactile feedback effect can be improved, and the first entity area B1 and the second entity area B2 can be controlled to be driven at a high frequency or a low frequency according to the tactile feedback requirements. For example, a ground voltage signal is applied to the first negative input pad A1- through the PCB, and the ground voltage signal is transmitted to the negative lead structure 22 of each piezoelectric actuator 2 through the first negative input pad A1-, the second negative lead line 1342, the first negative trace 1241, the first negative lead line 1341, the second negative trace 1242 and the negative connection pad 122, and an AC voltage signal is applied to the first positive input pad A1+, and the AC voltage signal is transmitted to the first positive input pad A1+ through the first The positive input pad A1+, the second positive lead-out line 1332, the first positive line 1231, the first positive lead-out line 1331, the second positive line 1232 and the positive connection pad 121 are transmitted to the positive lead-out structure 21 of each piezoelectric actuator 2, so that an alternating electric field can be formed between the positive lead-out structure 21 of the piezoelectric actuator 2 and the negative lead-out structure 22 of the piezoelectric actuator 2. Under the action of the alternating electric field, the piezoelectric actuator 2 generates vibration to achieve tactile feedback.

[0145] Specifically, as shown in Figures 12, 14 and 16, Figure 14 shows only the wiring and lead-out structures corresponding to the first sub-sub ... 33 is located on the side of the first sub-entity area B31 close to the hollow area AA, the fourth positive electrode trace 1234 is located on the side of the third sub-entity area B41 away from the hollow area AA, and every two positive electrode connection pads 121 arranged along the second direction Y of the first sub-entity area B31 are electrically connected to the third positive electrode trace 1233 through the first connection line 1251 located on the first metal layer 12, and every two positive electrode connection pads 121 arranged along the second direction Y of the third sub-entity area B41 are electrically connected to the third positive electrode trace 1233 through the first connection line 1251 located on the first metal layer 12. The second connection line 1252 of the metal layer 12 is electrically connected to the fourth positive electrode trace 1234. For example, the positive electrode lead 133 corresponding to the first subgroup of piezoelectric actuators includes: a third positive electrode lead 1333 located in the second physical area B2 and extending along the second direction Y, and a fourth positive electrode lead 1334 located in the fifth physical area B5 and extending along the first direction X. The end of the third positive electrode trace 1233 close to the third positive electrode lead 1333 passes through a via (V7) penetrating the flexible substrate 11. ) is electrically connected to the third positive lead wire 1333, one end of the third positive lead wire 1333 close to the fourth positive trace 1234 is electrically connected to the fourth positive trace 1234 through a via (V8) penetrating the flexible substrate 11, one end of the fourth positive lead wire 1334 is electrically connected to the second positive input pad A2+, and the other end of the fourth positive lead wire 1334 extends to the fourth sub-body area B42 and is electrically connected to the fourth positive trace 1234 through a via (V9) penetrating the flexible substrate 11.

[0146] Specifically, as shown in Figures 12, 14 and 16, for example, the negative electrode trace 124 corresponding to the first sub-group piezoelectric actuator includes: a third negative electrode trace 1243 located in the first sub-physical area B31 and extending along the first direction X, and a fourth negative electrode trace 1244 located in the fourth physical area B4 and arranged along the shape of the fourth physical area B4; the third negative electrode trace 1243 is located on a side of the first sub-physical area B31 away from the hollow area AA, and the fourth negative electrode trace 1244 is located on a side of the fourth physical area B4 close to the hollow area AA. Every two negative electrode connection pads 122 arranged along the second direction Y of the first sub-physical area B31 are electrically connected to the third negative trace 1243 through a third connection line 1253 located on the first metal layer 12, and every two negative electrode connection pads 122 arranged along the second direction Y of the third sub-physical area B41 are electrically connected to the third negative trace 1243 through a fourth connection line 1254 located on the first metal layer 12. The fourth negative electrode lead 134 is electrically connected to the fourth negative electrode trace 1244. For example, the negative electrode lead 134 corresponding to the first sub-group piezoelectric actuator includes: a third negative electrode lead 1343 located in the second physical area B2 and extending along the second direction Y, and a fourth negative electrode lead 1344 located in the fifth physical area B5 and extending along the first direction X. One end of the fourth negative electrode lead 1344 is electrically connected to the second negative electrode input pad A2-, and the other end of the fourth negative electrode lead 1344 extends to the fourth sub-physical area B42 and is electrically connected to the fourth negative electrode trace 1244 through a via (V10) penetrating the flexible substrate 11. The fourth connecting line 1254 is electrically connected to the third negative electrode lead 1343 through a via (V11) penetrating the flexible substrate 11. The end of the third negative electrode lead 1343 near the third negative electrode trace 1243 is electrically connected to the third connecting line 1253 through a via (V12) penetrating the flexible substrate 11.

[0147] In this way, the positive lead structures 21 of all the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 are connected in parallel, and the negative lead structures 22 of all the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 are connected in parallel. By driving all the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 together, the tactile feedback effect can be improved, and the first sub-entity area B31 and the third sub-entity area B41 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements. For example, a ground voltage signal is applied to the second negative input pad A2- through the PCB, and the ground voltage signal is transmitted to the negative lead structure 22 of each piezoelectric actuator 2 through the second negative input pad A2-, the fourth negative wiring 1244, the third negative lead 1343, the third negative wiring 1243 and the negative connection pad 122, and an AC voltage signal is applied to the second positive input pad A2+, and the AC voltage signal is transmitted to the second positive input pad A2- through the second positive input pad A2-. A2+, the fourth positive lead wire 1334, the fourth positive electrode trace 1234, the third positive lead wire 1333, the third positive electrode trace 1233 and the positive electrode connection pad 121 are transmitted to the positive electrode lead structure 21 of each piezoelectric actuator 2, so that an alternating electric field can be formed between the positive electrode lead structure 21 of the piezoelectric actuator 2 and the negative electrode lead structure 22 of the piezoelectric actuator 2. Under the action of the alternating electric field, the piezoelectric actuator 2 generates vibration to achieve tactile feedback.

[0148] Specifically, as shown in Figures 12, 15 and 16, Figure 15 shows only the routing and lead structures corresponding to the second sub-physical area B32 and the fourth sub-physical area B42 in Figure 12. For example, the positive electrode routing 123 corresponding to the second sub-physical area B32, the first sub-physical area B31 and the second physical area B2 includes: a fifth positive electrode routing 1235 along the second sub-physical area B32, the first sub-physical area B31 and the second physical area B2, and a sixth positive electrode routing 1236 located in the fourth sub-physical area B42 and extending along the first direction X; the fifth positive electrode routing 1235 is located on a side of the third physical area B3 close to the hollow area AA, and the sixth positive electrode routing 1236 is located on a side of the fourth sub-physical area B42 away from the hollow area AA. All the positive electrode connection pads 121 in the second sub-physical area B32 are electrically connected to the fifth positive electrode routing 1235, and all the positive electrode connection pads 121 located in the fourth sub-physical area B42 are electrically connected to the sixth positive electrode routing 1236; for example For example, the positive lead 133 corresponding to the second subgroup piezoelectric actuator includes: a fifth positive lead 1335 located in the third sub-physical area B41 and extending along the first direction X, and a sixth positive lead 1336 located in the fifth physical area B5 and extending along the first direction X. One end of the sixth positive lead 1336 is electrically connected to the third positive input pad B1+, and the other end of the sixth positive lead 1336 extends to the fourth sub-physical area B42 and is electrically connected to the sixth positive trace 1236 through a via (V13) penetrating the flexible substrate 11. An end of the sixth positive trace 1236 proximate to the fifth positive lead 1335 is electrically connected to the fifth positive lead 1335 through a via (V14) penetrating the flexible substrate 11. An end of the fifth positive lead 1335 proximate to the fifth positive trace 1235 is electrically connected to the fifth positive trace 1235 through a via (V15) penetrating the flexible substrate 11.

[0149] Specifically, as shown in Figures 12, 15 and 16, for example, the negative electrode trace 124 corresponding to the second sub-group piezoelectric actuator includes: a fifth negative electrode trace 1245 along the second sub-physical area B32, the first sub-physical area B31 and the second physical area B2, and a sixth positive electrode trace 1246 located in the fourth sub-physical area B42 and extending along the first direction X; the fifth negative electrode trace 1245 is located in the second sub-physical area B32 on the side of the second sub-physical area B32 away from the hollow area AA, the fifth negative electrode trace 1245 is located in the first sub-physical area B31 between the third positive electrode trace 1233 and the fifth positive electrode trace 1235, the sixth positive electrode trace 1246 is located between the sixth positive electrode trace 1236 and the fourth positive electrode trace 1234, and all negative electrode connection pads 122 of the third sub-physical area B32 are connected. All of the negative electrode connection pads 122 located in the fourth sub-physical area B42 are electrically connected to the sixth negative electrode trace 1246. For example, the negative electrode lead 134 corresponding to the second sub-group piezoelectric actuator includes: a fifth negative electrode lead 1345 located in the third sub-physical area B41 and extending along the first direction X, and a sixth negative electrode lead 1346 located in the fifth physical area B5 and extending along the first direction X. The fifth negative electrode lead 1345 is located between the fifth positive electrode lead 1335 and the fourth positive electrode trace 1244, one end of the sixth negative electrode lead 1346 is electrically connected to the third negative electrode input pad B1-, and the other end of the sixth negative electrode lead 1346 extends to the fourth sub-physical area B42 and connects to the sixth negative electrode trace 1246 through the via (V16) penetrating the flexible substrate 11. Electrical connection: the end of the sixth negative electrode trace 1246 close to the fifth negative electrode lead 1345 is electrically connected to the fifth negative electrode lead 1345 through a via (V17) penetrating the flexible substrate 11, and the end of the fifth negative electrode lead 1345 close to the fifth negative electrode trace 1245 is electrically connected to the fifth negative electrode trace 1245 through a via (V18) penetrating the flexible substrate 11.

[0150] In this way, the positive lead structures 21 of all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 are connected in parallel, and the negative lead structures 22 of all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 are connected in parallel. By driving all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 together, the tactile feedback effect can be improved, and the second sub-entity area B32 and the fourth sub-entity area B42 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements. For example, a ground voltage signal is applied to the third negative input pad B1- through the PCB, and the ground voltage signal is transmitted to the negative lead structure 22 of each piezoelectric actuator 2 through the third negative input pad B1-, the fifth negative lead line 1346, the sixth negative trace 1246, the third negative lead line 1345, the fifth negative trace 1245 and the negative connection pad 122, and an AC voltage signal is applied to the third positive input pad B1+, and the AC voltage signal is transmitted to the third positive input pad B1- through the third negative input pad B1-. The positive input pad B1+, the sixth positive lead-out line 1336, the sixth positive wiring 1236, the fifth positive lead-out line 1335, the fifth positive wiring 1235 and the positive connection pad 121 are transmitted to the positive lead-out structure 21 of each piezoelectric actuator 2, so that an alternating electric field can be formed between the positive lead-out structure 21 of the piezoelectric actuator 2 and the negative lead-out structure 22 of the piezoelectric actuator 2. Under the action of the alternating electric field, the piezoelectric actuator 2 generates vibration to achieve tactile feedback.

[0151] It should be noted that the positions of the traces with the same reference numbers in FIG. 12 and FIG. 1 may be different or the same; the positions of the lead lines with the same reference numbers in FIG. 12 and FIG. 1 may be different or the same.

[0152] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiment of the present disclosure, as shown in Figure 17, Figure 17 is a top-view schematic diagram of a flexible circuit board in another tactile feedback component provided by the embodiment of the present disclosure. The difference between Figure 17 and the structure shown in Figure 12 provided by the embodiment of the present disclosure is that the arrangement of the piezoelectric actuator 2 in the first sub-entity area B31 and the third sub-entity area B41 is different and the wiring connection is slightly different. Figure 17 only illustrates the wiring and lead-out structure corresponding to the first sub-entity area B31 and the third sub-entity area B41.

[0153] Specifically, as shown in FIG17 , the plurality of piezoelectric actuators 2 in the first sub-body region B31 are located in the same row and are arranged sequentially along the first direction X. The negative electrode connection pads 122 of the piezoelectric actuators 2 in the first sub-body region B31 are close to the outer edge of the first sub-body region B31 and are arranged along the first direction X. The positive electrode connection pads 121 of the piezoelectric actuators 2 in the first sub-body region B31 are close to the inner edge of the first sub-body region B31 and are arranged along the first direction X.

[0154] The multiple piezoelectric actuators 2 of the third sub-entity area B41 are located in the same row and arranged in sequence along the first direction X. The negative connecting pad 122 of each piezoelectric actuator 2 of the third sub-entity area B41 is close to the outer edge of the third sub-entity area B41 and arranged along the first direction X. The positive connecting pad 121 of each piezoelectric actuator 2 of the third sub-entity area B41 is close to the inner edge of the third sub-entity area B41 and arranged along the first direction X.

[0155] Specifically, as shown in Figure 17, all the negative electrode connection pads 122 located in the first sub-physical area B31 are directly electrically connected to the third negative electrode trace 1243, the portion of the fourth negative electrode trace 1244 located in the third sub-physical area B41 is located on the side away from the hollow area AA, and the portion of the fourth negative electrode trace 1244 located in the fourth sub-physical area B42 is located between the fourth positive electrode trace 1234 and the sixth negative electrode trace 1246. All the negative electrode connection pads 122 located in the third sub-physical area B41 are directly electrically connected to the fourth negative electrode trace 1244, and all the positive electrode connection pads 122 located in the third sub-physical area B41 are directly electrically connected to the fourth positive electrode trace 1234. The orthographic projections of the fourth positive electrode trace 1234 and the fourth negative electrode lead line 1344 on the flexible substrate 11 are cross-arranged. The connection method of the positive lead lines and the negative lead lines corresponding to the first sub-physical area B31 and the third sub-physical area B41 is the same as that in Figure 12, and please refer to the relevant description in Figure 12 for details.

[0156] In some embodiments, in the above-mentioned tactile feedback component provided by the embodiment of the present disclosure, as shown in Figure 18, Figure 18 is a top view schematic diagram of a flexible circuit board in another tactile feedback component provided by the embodiment of the present disclosure. The difference between Figure 18 and the structure shown in Figure 17 provided by the embodiment of the present disclosure is that the position of the fifth physical area B5 is different. The fifth physical area B5 in Figure 18 is located in the middle area of ​​the first physical area B1. The wiring connection method of each group of piezoelectric actuators is the same, except that all positive and negative lead wires are extended to the middle position on the side of the first physical area B1 and connected to the corresponding pad group.

[0157] Specifically, the fifth physical region B5 in FIG. 1 , FIG. 9 and FIG. 12 may also be located in the middle area of ​​the first physical region B1 .

[0158] In some embodiments, in the haptic feedback assembly provided in the embodiments of the present disclosure, as shown in FIG19 , FIG19 is a top view schematic diagram of a flexible circuit board in another haptic feedback assembly provided in the embodiments of the present disclosure. The structure of FIG19 differs from FIG1 in that the fifth physical area B5 is not provided, the position of the input pad group D is different, and the routing structure requires modification. Compared to FIG1 , the structure of FIG19 lacks the fifth physical area B5, which can reduce the area of ​​the flexible circuit board. Therefore, when the haptic feedback assembly shown in FIG19 is integrated with a display or touch panel substrate, a narrower bezel can be achieved.

[0159] Specifically, as shown in Figures 19 to 25, Figure 20 is a schematic structural diagram of the first physical area in Figure 19, Figure 21 is a schematic structural diagram of the second physical area in Figure 19, Figure 22 is a schematic structural diagram of the first sub-physical area in Figure 19, Figure 23 is a schematic structural diagram of the second sub-physical area in Figure 19, Figure 24 is a schematic structural diagram of the third sub-physical area in Figure 19, and Figure 25 is a schematic structural diagram of the fourth sub-physical area in Figure 19. The input pad group D includes: a first input pad group D1 located in the first physical area B1 and corresponding to the piezoelectric actuator 2 of the first physical area B1, and a second input pad group D2 located in the second physical area B2 and corresponding to the piezoelectric actuator 2 of the second physical area B2; wherein the first input pad group D1 includes a first positive input pad A1+ and a first negative input pad A1-, the second input pad group D2 includes a second positive input pad A2+ and a second negative input pad A2-, the first positive input pad A1 + and the second positive input pad A2+ are electrically connected to the first positive drive signal terminal (not shown), that is, the first positive input pad A1+ and the second positive input pad A2+ are connected to the same positive drive signal, and the first negative input pad A1- and the second negative input pad A2- are electrically connected to the first negative drive signal terminal (not shown), that is, the first negative input pad A1- and the second negative input pad A2- are connected to the same negative drive signal; in this way, the positive lead-out structures 21 of all piezoelectric actuators 2 in the first entity area B1 and the second entity area B2 can be connected in parallel, and the negative lead-out structures 22 of all piezoelectric actuators 2 in the first entity area B1 and the second entity area B2 can be connected in parallel. By driving all the piezoelectric actuators 2 in the first entity area B1 and the second entity area B2 together, the tactile feedback effect can be improved, and the second sub-entity area B32 and the fourth sub-entity area B42 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements.

[0160] Specifically, as shown in FIG19 , the input pad group D also includes: a third input pad group D3 located in the first sub-entity area B31 and corresponding to the piezoelectric actuator 2 of the first sub-entity area B31, and a fourth input pad group D4 located in the third sub-entity area B41 and corresponding to the piezoelectric actuator 2 of the third sub-entity area B41; wherein, the third input pad group D3 includes a third positive input pad B1+ and a third negative input pad B1-, and the fourth input pad group D4 includes a fourth positive input pad B2+ and a fourth negative input pad B2-, and the third positive input pad B1+ and the fourth positive input pad B2+ are electrically connected to the second positive drive signal terminal (not shown), that is, the third positive input pad B1+ and the fourth positive input pad B2+ are connected to the same positive drive signal terminal. , the third negative input pad B1- and the fourth negative input pad B2- are electrically connected to the second negative drive signal terminal (not shown), that is, the third negative input pad B1- and the fourth negative input pad B2- are connected to the same negative drive signal; in this way, the positive lead-out structures 21 of all piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 can be connected in parallel, and the negative lead-out structures 22 of all piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 can be connected in parallel. By driving all the piezoelectric actuators 2 in the first sub-entity area B31 and the third sub-entity area B41 together, the tactile feedback effect can be improved, and the first sub-entity area B31 and the third sub-entity area B41 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements.

[0161] Specifically, as shown in Figure 19, the input pad group D includes: a fifth input pad group D5 located in the second sub-entity area B32 and corresponding to the piezoelectric actuator 2 of the second sub-entity area B32, and a sixth input pad group D6 located in the fourth sub-entity area B42 and corresponding to the piezoelectric actuator 2 of the fourth sub-entity area B42; wherein, the fifth input pad group D5 includes a fifth positive input pad C1+ and a fifth negative input pad C1-, and the sixth input pad group D6 includes a sixth positive input pad C2+ and a sixth negative input pad C2-, and the fifth positive input pad C1+ and the sixth positive input pad C2+ are electrically connected to the third positive drive signal terminal (not shown), that is, the fifth positive input pad C1+ and the sixth positive input pad C2+ are connected to the same positive drive signal terminal. , the fifth negative input pad C1- and the sixth negative input pad C2- are electrically connected to the third negative drive signal terminal (not shown), that is, the fifth negative input pad C1- and the sixth negative input pad C2- are connected to the same negative drive signal; in this way, the positive lead-out structures 21 of all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 can be connected in parallel, and the negative lead-out structures 22 of all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 can be connected in parallel. By driving all piezoelectric actuators 2 in the second sub-entity area B32 and the fourth sub-entity area B42 together, the tactile feedback effect can be improved, and the second sub-entity area B32 and the fourth sub-entity area B42 can be controlled to be high-frequency driven or low-frequency driven according to the tactile feedback requirements.

[0162] In some embodiments, in the tactile feedback assembly provided by the embodiments of the present disclosure, as shown in FIG19 , the first input pad group D1 may be located at one end of the first physical area B1, and the second input pad group D2 may be located at one end of the second physical area B2;

[0163] The third input pad group D3 may be located at one end of the first sub-physical area B31, the fourth input pad group D4 may be located at one end of the third sub-physical area B41, and the third input pad group D3 and the fourth input pad group D4 may be close to the second physical area B2;

[0164] The fifth input pad group D5 may be located at one end of the second sub-physical region B32 , the sixth input pad group D6 may be located at one end of the fourth sub-physical region B42 , and the fifth and sixth input pad groups D5 and D6 may be close to the first physical region.

[0165] Specifically, as shown in Figures 19 to 21, the positive electrode traces 123 corresponding to the first group of piezoelectric actuators include: a first positive electrode trace 1231 located in the first entity area B1 and extending along the second direction Y, and a second positive electrode trace 1232 located in the second entity area B2 and extending along the second direction Y; the first positive electrode trace 1231 is close to the hollow area AA, and the second positive electrode trace 1232 is away from the hollow area AA; the positive electrode lead wires 133 corresponding to the first group of piezoelectric actuators include: a first positive electrode lead wire 1331 located at the edge of the first entity area B1 close to the second sub-entity area B32 and extending along the second direction Y, and a second positive electrode lead wire 1332 located at the edge of the second entity area B2 close to the third sub-entity area B41 and extending along the second direction Y; wherein, the first All positive electrode connection pads 121 in the physical area B1 are electrically connected to the first positive electrode trace 1231, and all positive electrode connection pads 121 in the second physical area B2 are electrically connected to the second positive electrode trace 1232. The end of the first positive electrode trace 1231 close to the first positive electrode lead line 1331 is electrically connected to one end of the first positive electrode lead line 1331 through a via (V1) penetrating the flexible substrate 11, and the other end of the first positive electrode lead line 1331 is electrically connected to the first positive input pad A1+; the end of the second positive electrode trace 1232 close to the second positive electrode lead line 1332 is electrically connected to one end of the second positive electrode lead line 1332 through a via (V2) penetrating the flexible substrate 11, and the other end of the second positive electrode lead line 1332 is electrically connected to the second positive input pad A2+.

[0166] Specifically, as shown in Figures 19 to 21, the negative electrode traces 124 corresponding to the first group of piezoelectric actuators include: a first negative electrode trace 1241 located in the first entity area B1 and extending along the second direction Y, and a second negative electrode trace 1242 located in the second entity area B2 and extending along the second direction Y; the first negative electrode trace 1241 is away from the hollow area AA, and the second negative electrode trace 1242 is close to the hollow area AA; the negative electrode lead wires 134 corresponding to the first group of piezoelectric actuators include: a first negative electrode lead wire 1341 located at the edge of the first entity area B1 close to the second sub-entity area B32 and extending along the second direction Y, and a second negative electrode lead wire 1342 located at the edge of the second entity area B2 close to the third sub-entity area B41 and extending along the second direction Y; wherein, the first All negative electrode connection pads 122 in the physical area B1 are electrically connected to the first negative electrode trace 1241, and all negative electrode connection pads 122 in the second physical area B2 are electrically connected to the second negative electrode trace 1242. An end of the first negative electrode trace 1241 close to the first negative electrode lead line 1341 is electrically connected to one end of the first negative electrode lead line 1341 through a via (V3) penetrating the flexible substrate 11, and the other end of the first negative electrode lead line 1341 is electrically connected to the first negative electrode input pad A1-; an end of the second negative electrode trace 1242 close to the second negative electrode lead line 1342 is electrically connected to one end of the second negative electrode lead line 1342 through a via (V4) penetrating the flexible substrate 11, and the other end of the second negative electrode lead line 1342 is electrically connected to the second negative electrode input pad A2-.

[0167] Specifically, as shown in Figures 19, 22 and 24, the positive electrode trace 123 corresponding to the first sub-group piezoelectric actuator includes: a third positive electrode trace 1233 located in the first sub-physical area B31 and extending along the first direction X, and a fourth positive electrode trace 1234 located in the third sub-physical area B41 and extending along the first direction X; the third positive electrode trace 1233 is close to the hollow area AA, and the fourth positive electrode trace 1234 is away from the hollow area AA; the positive electrode lead 133 corresponding to the first sub-group piezoelectric actuator also includes: a third positive electrode lead 1333 located in the first sub-physical area B31 close to the edge of the second physical area B2 and extending along the first direction X, and a fourth positive electrode lead 1334 located in the third sub-physical area B41 close to the edge of the second physical area B2 and extending along the first direction X; wherein, every two positive electrodes of the first sub-physical area B31 arranged along the second direction Y The connecting pads 121 are all electrically connected to the third positive electrode trace 1233 through a first connecting line 1251 located on the first metal layer 12, and the end of the third positive lead line 1333 close to the first connecting line 1251 is electrically connected to the first connecting line 1251 through a via (V5) penetrating the flexible substrate 11, and the other end of the third positive lead line 1333 is electrically connected to the third positive input pad B1+; every two positive connecting pads 121 arranged along the second direction Y of the third sub-entity area B41 are electrically connected to the fourth positive electrode trace 1234 through a second connecting line 1252 located on the first metal layer 12, and the end of the fourth positive lead line 1334 close to the second connecting line 1252 is electrically connected to the second connecting line 1252 through a via (V6) penetrating the flexible substrate 11, and the other end of the fourth positive lead line 1334 is electrically connected to the fourth positive input pad B2+.

[0168] Specifically, as shown in Figures 19, 22 and 24, the negative electrode trace 124 corresponding to the first subgroup piezoelectric actuator includes: a third negative electrode trace 1243 located in the first sub-body area B31 and extending along the first direction X, and a fourth negative electrode trace 1244 located in the third sub-body area B41 and extending along the first direction X; the third negative electrode trace 1243 is away from the hollow area AA, and the fourth negative electrode trace 1244 is close to the hollow area AA; the negative electrode lead wire corresponding to the first subgroup piezoelectric actuator 134 also includes: a third negative electrode lead line 1343 located at the edge of the first sub-physical area B31 close to the second physical area B2 and extending along the first direction X, and a fourth negative electrode lead line 1344 located at the edge of the third sub-physical area B41 close to the second physical area B2 and extending along the first direction X; wherein the third negative electrode lead line 1343 is located on the side of the third positive electrode lead line 1333 close to the hollow area AA, and the fourth negative electrode lead line 1344 is located on the fourth positive electrode lead line 1334 On one side of the hollow area AA, each of the two negative electrode connection pads 122 arranged along the second direction Y of the first sub-entity area B31 is electrically connected to the third negative electrode trace 1243 through the third connection line 1253 located on the first metal layer 12, and one end of the third negative electrode lead line 1343 close to the third connection line 1253 is electrically connected to the third connection line 1253 through the via (V7) penetrating the flexible substrate 11, and the other end of the third negative electrode lead line 1343 is electrically connected to the third negative electrode input pad B 1-Electrical connection; every two negative electrode connection pads 122 of the fourth sub-entity area B41 arranged along the second direction Y are electrically connected to the fourth negative electrode trace 1244 through the fourth connection line 1254 located on the first metal layer 12, and the end of the fourth negative electrode lead line 1344 close to the fourth connection line 1254 is electrically connected to the fourth connection line 1254 through a via (V8) penetrating the flexible substrate 11, and the other end of the fourth negative electrode lead line 1344 is electrically connected to the fourth negative input pad B2-.

[0169] Specifically, as shown in Figures 19, 23 and 25, the positive electrode trace 123 corresponding to the second sub-group piezoelectric actuator includes: a fifth positive electrode trace 1235 located in the second sub-physical area B32 and extending along the first direction X, and a sixth positive electrode trace 1236 located in the fourth sub-physical area B42 and extending along the first direction X; the fifth positive electrode trace 1235 is close to the hollow area AA, and the sixth positive electrode trace 1236 is away from the hollow area AA; the positive electrode lead 133 corresponding to the second sub-group piezoelectric actuator includes: a fifth positive electrode lead 1335 located in the second sub-physical area B32 close to the edge of the first physical area B1 and extending along the first direction X, and a sixth positive electrode lead 1336 located in the fourth sub-physical area B42 close to the edge of the first physical area B1 and extending along the first direction X; wherein, All the positive electrode connection pads 121 of the second sub-physical area B32 are electrically connected to the fifth positive electrode trace 1235, and the end of the fifth positive electrode trace 1235 close to the fifth positive lead line 1335 is electrically connected to one end of the fifth positive lead line 1335 through a via (V9) penetrating the flexible substrate 11, and the other end of the fifth positive lead line 1335 is electrically connected to the fifth positive input pad C1+; all the positive electrode connection pads 121 of the fourth sub-physical area B42 are electrically connected to the sixth positive electrode trace 1236, and the end of the sixth positive electrode trace 1236 close to the sixth positive lead line 1336 is electrically connected to one end of the sixth positive lead line 1336 through a via (V10) penetrating the flexible substrate 11, and the other end of the sixth positive lead line 1336 is electrically connected to the sixth positive input pad C2+.

[0170] Specifically, as shown in Figures 19, 23 and 25, the negative electrode trace 124 corresponding to the second sub-group piezoelectric actuator includes: a fifth negative electrode trace 1245 located in the second sub-physical area B32 and extending along the first direction X, and a sixth negative electrode trace 1246 located in the fourth sub-physical area B42 and extending along the first direction X; the fifth negative electrode trace 1245 is away from the hollow area AA, and the sixth negative electrode trace 1246 is close to the hollow area AA; the negative electrode lead 134 corresponding to the second sub-group piezoelectric actuator includes: a fifth negative electrode lead 1345 located in the second sub-physical area B32 close to the edge of the first physical area B1 and extending along the first direction X, and a sixth negative electrode lead 1346 located in the fourth sub-physical area B42 close to the edge of the first physical area B1 and extending along the first direction X; wherein, All the negative electrode connection pads 122 of the second sub-physical area B32 are electrically connected to the fifth negative electrode trace 1245. The end of the fifth negative electrode trace 1245 close to the fifth negative electrode lead line 1345 is electrically connected to one end of the fifth negative electrode lead line 1345 through a via (V11) penetrating the flexible substrate 11, and the other end of the fifth negative electrode lead line 1345 is electrically connected to the fifth negative electrode input pad C1-. All the negative electrode connection pads 122 of the fourth sub-physical area B42 are electrically connected to the sixth negative electrode trace 1246. The end of the sixth negative electrode trace 1246 close to the sixth negative electrode lead line 1346 is electrically connected to one end of the sixth negative electrode lead line 1346 through a via (V12) penetrating the flexible substrate 11, and the other end of the sixth negative electrode lead line 1346 is electrically connected to the sixth negative electrode input pad C2-.

[0171] It should be noted that the positions of the traces with the same number in FIG19 and FIG1 may be different or the same; the positions of the lead lines with the same number in FIG19 and FIG1 may be different or the same.

[0172] In some embodiments, in the tactile feedback assembly provided in the embodiments of the present disclosure, as shown in FIG26 , which is a top view of a flexible circuit board in another tactile feedback assembly provided in the embodiments of the present disclosure, the structural difference between FIG26 and FIG19 lies in the different arrangement of the piezoelectric actuators in the first sub-body area B31 and the third sub-body area B41, and the need to change the wiring method. The arrangement of the piezoelectric actuators 2 in the first sub-body area B31 and the third sub-body area B41 in FIG26 is the same as that in FIG9 . 26 , all positive electrode connection pads 121 located in the first sub-physical area B31 are directly electrically connected to the third positive electrode trace 1233. All negative electrode connection pads 122 located in the first sub-physical area B31 are directly electrically connected to the third negative electrode trace 1243. All positive electrode connection pads 121 located in the third sub-physical area B41 are directly electrically connected to the fourth positive electrode trace 1234. All negative electrode connection pads 122 located in the third sub-physical area B41 are directly electrically connected to the fourth negative electrode trace 1244. The third positive electrode lead 1333 is located on the side of the third negative electrode lead 1343 that is close to the hollow area AA, and the fourth negative electrode lead 1344 is located on the side of the fourth positive electrode lead 1334 that is close to the hollow area AA.

[0173] In some embodiments, the tactile feedback component provided by the embodiments of the present disclosure can be integrated into products such as notebooks and monitors, and can be used as a display screen in many fields such as in-vehicle displays and consumer electronics to provide users with a rich and realistic tactile experience.

[0174] Based on the same inventive concept, an embodiment of the present disclosure further provides a tactile feedback display device, as shown in FIG27 , comprising:

[0175] Cover plate 100;

[0176] The display module 200 is provided on the non-touch surface of the cover 100;

[0177] The tactile feedback component 300 is provided on the non-touch surface of the cover 100 . The tactile feedback component 300 is the tactile feedback component provided in the embodiment of the present disclosure.

[0178] Since the principle of solving the problem of the tactile feedback device is similar to that of the aforementioned tactile feedback component, the implementation of the tactile feedback device can refer to the implementation of the aforementioned tactile feedback component, and the repeated parts are not repeated here.

[0179] In some embodiments, in the above-mentioned tactile feedback device provided by the embodiments of the present disclosure, as shown in Figure 27, the cover plate 100 includes a central area aa (i.e., a display area) and a peripheral area bb surrounding the central area, the display module 200 is arranged in the central area of ​​the cover plate 100, the hollow area AA of the tactile feedback component 300 corresponds to the central area aa of the cover plate, and the solid area BB of the tactile feedback component 300 corresponds to the peripheral area bb of the cover plate.

[0180] Specifically, the PCB can generate a driving signal based on the touch information of the touch object (such as a finger) on the cover 100 and transmit it to the piezoelectric actuator 2. The piezoelectric actuator 2 responds to the driving signal and drives the cover 100 to vibrate, thereby forming tactile feedback on the touch surface of the cover 100.

[0181] In some embodiments, in the above-mentioned tactile feedback device provided in the embodiments of the present disclosure, as shown in Figure 27, the cover 100 is a structure that directly contacts the tactile sense organs such as fingers, and can be a cover on the surface of a notebook display module, a cover on the surface of a vehicle-mounted display module, a cover on the surface of a mobile terminal display module, or a cover on the surface of a display module for other application scenarios, etc.

[0182] It should be noted that the tactile feedback display device shown in Figure 27 takes the tactile feedback component 300 as the structure shown in Figure 1 as an example. Of course, the tactile feedback component 300 in the tactile feedback display device provided by the embodiment of the present disclosure can also adopt the structure shown in Figures 9, 12, 17, 18, and 19. The structure of the cover plate 100 needs to be changed accordingly to match the tactile feedback component 300.

[0183] In some embodiments, the display module in the tactile feedback display device provided in the embodiments of the present disclosure may be a liquid crystal display module or a self-luminous display module, which is not limited in the present disclosure. The liquid crystal display module includes a liquid crystal display panel and a backlight source, and the self-luminous display module has a built-in light-emitting device, which may be, for example, an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), a sub-millimeter light-emitting diode (Mini LED), or a micro light-emitting diode (Micro LED).

[0184] In some embodiments, the display module in the tactile feedback display device provided by the embodiments of the present disclosure may further include a touch function layer.

[0185] Optionally, the tactile feedback display device provided in the embodiment of the present disclosure can be a mobile phone, a tablet computer, a smart wearable device (such as a smart watch), a car display screen, etc.

[0186] Optionally, the tactile feedback display device shown in FIG. 27 provided by the embodiment of the present disclosure may be a curved display screen, which is curved up and down, for example, with a curvature of R800, but is certainly not limited thereto.

[0187] Specifically, other essential components of the tactile feedback display device should be understood by those skilled in the art and will not be described in detail herein, nor should they be construed as limiting the present disclosure.

[0188] Specifically, the tactile feedback display device includes but is not limited to: a radio frequency unit, a network module, an audio output and input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply.

[0189] In addition, those skilled in the art will understand that the above structure does not constitute a limitation on the tactile feedback display device provided in the embodiment of the present disclosure. In other words, the tactile feedback display device provided in the embodiment of the present disclosure may include more or fewer of the above components, or a combination of certain components, or different component arrangements.

[0190] Embodiments of the present disclosure provide a tactile feedback component and a tactile feedback display device, in which different groups of piezoelectric actuators are connected to corresponding input pad groups via an FPC. The input pad groups can be connected to an external PCB. Since the FPC can route wiring on both sides, when the tactile feedback component of the present disclosure is integrated with a display or touch substrate, the space occupied by the wiring connecting the piezoelectric actuators in the border area of ​​the substrate can be reduced, thereby achieving a narrow border. In addition, by rationally arranging the way in which the piezoelectric actuators are connected to the PCB via wiring, noise generated by the wiring as the piezoelectric actuators vibrate can also be reduced.

[0191] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0192] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present disclosure without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if such changes and modifications of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such changes and modifications.

Claims

1. A haptic feedback component, wherein, include: A flexible circuit board, comprising: a flexible substrate, a first metal layer arranged on one side of a first surface of the flexible substrate, and a second metal layer arranged on one side of a second surface of the flexible substrate; the first surface and the second surface are arranged opposite to each other along the thickness direction of the flexible substrate; the first metal layer comprises a plurality of connection pad groups, and the second metal layer comprises at least one input pad group; A plurality of piezoelectric actuators are arranged on a side of the first metal layer away from the flexible substrate, each of the piezoelectric actuators is electrically connected to one of the connection pad groups; the plurality of piezoelectric actuators are divided into at least one group, the piezoelectric actuators in the same group are electrically connected to the same input pad group, and the piezoelectric actuators in different groups are electrically connected to different input pad groups; the piezoelectric actuators are configured to generate tactile feedback in response to a driving signal input by the input pad group.

2. The tactile feedback component according to claim 1, wherein, The piezoelectric actuator has a positive lead-out structure and a negative lead-out structure on one side facing the first metal layer, each of the connection pad groups includes a positive connection pad and a negative connection pad, the positive lead-out structure is electrically connected to the positive connection pad, and the negative lead-out structure is electrically connected to the negative connection pad; Each of the input pad groups includes a positive input pad, the first metal layer also includes a positive electrode wiring, and the second metal layer also includes a positive electrode lead wire; Each of the positive electrode connection pads electrically connected to the piezoelectric actuators of the same group is electrically connected to the corresponding positive electrode input pad through at least one positive electrode wiring and at least one positive electrode lead wire.

3. The tactile feedback component according to claim 2, wherein, Each of the input pad groups also includes a negative input pad, the first metal layer also includes a negative wiring, and the second metal layer also includes a negative lead wire; each of the negative connection pads electrically connected to the piezoelectric actuators in the same group is electrically connected to the corresponding negative input pad through at least one negative wiring and at least one negative lead wire.

4. The haptic feedback component according to claim 3, wherein, The positive electrode wiring and the positive electrode lead wire electrically connected to the piezoelectric actuators in the same group are electrically connected through a via hole penetrating the flexible substrate, and the negative electrode wiring and the negative electrode lead wire electrically connected to the piezoelectric actuators in the same group are electrically connected through a via hole penetrating the flexible substrate.

5. The haptic feedback component according to claim 4, wherein, The flexible circuit board comprises a hollow area and a solid area surrounding the hollow area, and the plurality of connection pad groups are arranged around the hollow area; The solid area includes a first solid area and a second solid area located at opposite sides of the hollow area in a first direction, and the solid area also includes a third solid area and a fourth solid area located at opposite sides of the hollow area in a second direction, wherein the first direction is perpendicular to the second direction; The plurality of piezoelectric actuators include: a first group of piezoelectric actuators located in the first physical region and the second physical region, and a second group of piezoelectric actuators located in the third physical region and the fourth physical region; A plurality of the piezoelectric actuators in the first physical region and the second physical region are respectively at least in the same row, and each row is arranged in sequence along the second direction. A plurality of the piezoelectric actuators in the third physical region and the fourth physical region are respectively at least in the same row, and each row is arranged in sequence along the first direction.

6. The tactile feedback component according to claim 5, wherein Insulation is provided between each of the positive electrode traces and each of the negative electrode traces corresponding to the first group of piezoelectric actuators and the second group of piezoelectric actuators respectively. Insulation is provided between each of the positive electrode lead-out wires and each of the negative electrode lead-out wires corresponding to the first group of piezoelectric actuators and the second group of piezoelectric actuators respectively.

7. The tactile feedback component according to claim 5, wherein, Each of the piezoelectric actuators in the first physical region, the second physical region, the third physical region and the fourth physical region corresponds to one of the connection pad groups respectively. The positive electrode connection pads corresponding to the piezoelectric actuators in the same row in the first physical region and the second physical region are in the same row and are arranged along the second direction. The negative electrode connection pads corresponding to the piezoelectric actuators in the same row in the first physical region and the second physical region are in the same row and are arranged along the second direction. The positive electrode connection pads corresponding to the piezoelectric actuators in the same row in the third physical region and the fourth physical region are in the same row and are arranged along the first direction. The negative electrode connection pads corresponding to the piezoelectric actuators in the same row in the third physical region and the fourth physical region are in the same row. And are arranged along the first direction.

8. The haptic feedback component according to any one of claims 5-7, wherein, The third physical region is divided into a first sub-physical region and a second sub-physical region along the first direction. The fourth physical region is divided into a third sub-physical region and a fourth sub-physical region along the first direction. The first sub-physical region and the third sub-physical region are close to the second physical region. The second sub-physical region and the fourth sub-physical region are close to the first physical region. The second group of piezoelectric actuators includes: a first sub-group of piezoelectric actuators located in the first sub-physical region and the third sub-physical region, and a second sub-group of piezoelectric actuators located in the second sub-physical region and the fourth sub-physical region. Each of the positive electrode traces and each of the negative electrode traces corresponding to the first sub-group of piezoelectric actuators and the second sub-group of piezoelectric actuators are different. Each of the positive electrode lead-out wires and each of the negative electrode lead-out wires corresponding to the first sub-group of piezoelectric actuators and the second sub-group of piezoelectric actuators are different.

9. The haptic feedback component according to claim 8, wherein, The positive electrode connection pads corresponding to the piezoelectric actuators in different rows in the first sub-physical region and the third sub-physical region are arranged in alignment along the second direction. The negative electrode connection pads corresponding to the piezoelectric actuators in different rows in the first sub-physical region and the third sub-physical region are arranged in alignment along the second direction. The positive electrode connection pads and the negative electrode connection pads in the same row in the first sub-physical region and the third sub-physical region are arranged alternately along the first direction.

10. The haptic feedback component according to claim 8, wherein, The multiple piezoelectric actuators in the first sub-entity region are located in the same row and arranged in sequence along the first direction. The negative connection pads of the piezoelectric actuators in the first sub-entity region are close to the outer edge of the first sub-entity region and arranged along the first direction, and the positive connection pads of the piezoelectric actuators in the first sub-entity region are close to the inner edge of the first sub-entity region and arranged along the first direction; The multiple piezoelectric actuators in the third sub-entity region are located in the same row and arranged in sequence along the first direction. The negative connection pads of the piezoelectric actuators in the third sub-entity region are close to the outer edge of the third sub-entity region and arranged along the first direction, and the positive connection pads of the piezoelectric actuators in the third sub-entity region are close to the inner edge of the third sub-entity region and arranged along the first direction.

11. The haptic feedback component according to any one of claims 8-10, wherein, All the positive connection pads in the second sub-entity region are located in the same row and arranged in sequence along the first direction. All the negative connection pads in the second sub-entity region are located in the same row and arranged in sequence along the first direction. The positive connection pads and the negative connection pads are in different rows, and the positive connection pads and the negative connection pads are arranged alternately along the first direction.

12. The tactile feedback component according to claim 11, wherein, All the positive connection pads in the fourth sub-entity region are located in the same row and arranged in sequence along the first direction. All the negative connection pads in the fourth sub-entity region are located in the same row and arranged in sequence along the first direction. The positive connection pads and the negative connection pads are in different rows, and the positive connection pads and the negative connection pads are arranged alternately along the first direction.

13. The haptic feedback component according to any one of claims 8-12, wherein, The entity region further includes a fifth entity region, which is located on the side of the first entity region away from the second entity region, and each input pad group is located in the fifth entity region.

14. The haptic feedback component according to claim 13, wherein, The fifth entity region is located at the edge of the first entity region and close to the third entity region, or the fifth entity region is located at the edge of the first entity region and close to the fourth entity region, or the fifth entity region is located in the middle area of the first entity region.

15. The haptic feedback component according to claim 14, wherein, The input pad group includes: a first input pad group corresponding to the first group of piezoelectric actuators, a second input pad group corresponding to the first subgroup of piezoelectric actuators, and a third input pad group corresponding to the second subgroup of piezoelectric actuators.

16. The haptic feedback component according to any one of claims 8-12, wherein, The input pad group includes: a first input pad group located in the first entity region and corresponding to the piezoelectric actuators in the first entity region, a second input pad group located in the second entity region and corresponding to the piezoelectric actuators in the second entity region, a third input pad group located in the first sub-entity region and corresponding to the piezoelectric actuators in the first sub-entity region, a fourth input pad group located in the third sub-entity region and corresponding to the piezoelectric actuators in the third sub-entity region, a fifth input pad group located in the second sub-entity region and corresponding to the piezoelectric actuators in the second sub-entity region, and a sixth input pad group located in the fourth sub-entity region and corresponding to the piezoelectric actuators in the fourth sub-entity region.

17. The haptic feedback component according to claim 16, wherein, The first input pad group is located at one end of the first entity region, and the second input pad group is located at one end of the second entity region; The third input pad group is located at one end of the first sub-entity region, the fourth input pad group is located at one end of the third sub-entity region, and the third input pad group and the fourth input pad group are close to the second entity region; The fifth input pad group is located at one end of the second sub-entity region, the sixth input pad group is located at one end of the fourth sub-entity region, and the fifth input pad group and the sixth input pad group are close to the first entity region.

18. The haptic feedback component according to any one of claims 1-17, wherein, The shape of the piezoelectric actuator includes a rectangle or a circle, and the structure of the piezoelectric actuator is a piezoelectric thin film or a piezoelectric ceramic block.

19. A tactile feedback display device, wherein, Comprising: A cover plate; A display module disposed on the non-touch surface of the cover plate; A haptic feedback component disposed on the non-touch surface of the cover plate, and the haptic feedback component is the haptic feedback component according to any one of claims 1-18.

20. The tactile feedback display device according to claim 19, wherein The cover plate includes a central region and a peripheral region surrounding the central region. The display module is disposed in the central region of the cover plate. The hollow region of the haptic feedback component corresponds to the central region of the cover plate, and the entity region of the haptic feedback component corresponds to the peripheral region of the cover plate.

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