CN118034502A

CN118034502A - Haptic feedback device

Info

Publication number: CN118034502A
Application number: CN202410335632.7A
Authority: CN
Inventors: 陶永春; 齐德兴; 王贺; 王迎姿
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Technology Development Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Technology Development Co Ltd
Priority date: 2024-03-22
Filing date: 2024-03-22
Publication date: 2024-05-14

Abstract

The present disclosure provides a haptic feedback device, comprising: the touch feedback panel module comprises a touch side and a non-touch side which are arranged opposite to each other; the shell comprises a rear shell part arranged on the non-touch side of the touch feedback panel module and a side frame part arranged around the periphery of the touch feedback panel module; the haptic feedback driving module is arranged in a space formed by the haptic feedback panel module and the rear shell part in a surrounding way, is connected with the haptic feedback panel module and is used for responding to the excitation electric signal to drive the haptic feedback panel module to generate haptic feedback; in the direction perpendicular to the haptic feedback panel module, one end of the side frame part, which is far away from the rear shell part, is a supporting end, a gap is formed between the peripheral edge of the haptic feedback panel module and the supporting end, an elastic buffer connecting piece is arranged in the gap, and the elastic buffer connecting piece is connected with the supporting end and the haptic feedback panel module. The haptic feedback device provided by the present disclosure can improve the impact resistance of the device.

Description

Haptic feedback device

Technical Field

The invention relates to the technical field of display, in particular to a tactile feedback device.

Background

Haptic feedback (Haptics) technology is an important point of technological development today, and the concept is that by means of haptic technology, electronic device manufacturers can create distinctive personalized haptic feedback on their devices for specific interactive experiences, thereby providing consumers with a more valuable and more realistic unique experience.

With the continuous development of touch display technology, haptic feedback technology has been applied in many fields, such as consumer electronics fields of mobile phones, game palm, vehicle-mounted display screens, and the like. However, since the safety requirements in the fields of automotive electronics and the like are high, the impact resistance of the haptic feedback device is higher, so as to avoid damage to the haptic feedback module.

Disclosure of Invention

Embodiments of the present disclosure provide a haptic feedback device that can improve the impact resistance of the haptic feedback device.

The technical scheme provided by the embodiment of the disclosure is as follows:

embodiments of the present disclosure provide a haptic feedback device, comprising:

The touch feedback panel module comprises a touch side and a non-touch side which are arranged opposite to each other;

the shell comprises a rear shell part arranged on the non-touch side of the touch feedback panel module and a side frame part arranged around the periphery of the touch feedback panel module; and

The haptic feedback driving module is arranged in a space formed by the haptic feedback panel module and the rear shell part in a surrounding way and is connected with the haptic feedback panel module, and the haptic feedback driving module is used for responding to an excitation electric signal to drive the haptic feedback panel module to generate haptic feedback; wherein,

In the direction perpendicular to the haptic feedback panel module, one end of the side frame part, which is far away from the rear shell part, is a supporting end, a gap is formed between the peripheral edge of the haptic feedback panel module and the supporting end, an elastic buffer connecting piece is arranged in the gap, and the elastic buffer connecting piece is connected with the supporting end and the haptic feedback panel module.

The touch feedback panel module comprises a touch display panel, wherein the touch display panel comprises a light emitting surface, a bottom surface and a peripheral side surface, wherein the light emitting surface and the bottom surface are arranged oppositely, and the peripheral side surface is positioned between the light emitting surface and the bottom surface;

the support end comprises a first support area and a second support area in the direction pointing to the touch feedback panel module from the side frame part, the first support area is positioned on one side of the second support area, which is close to the touch display panel, and the second support area protrudes relative to the first support area along the light emitting direction of the touch display panel and towards the direction, which is close to the touch side, so that the first support area forms a first support surface parallel to the touch display panel and a second support surface perpendicular to the touch display panel; wherein,

The edge part of the touch display panel is stacked on one side, far away from the rear shell part, of the first supporting surface, at least one part of the elastic buffer connecting piece is connected between the bottom surface of the touch display panel and the first supporting surface, and at least one other part of the elastic buffer connecting piece is connected between the peripheral side surface of the touch display panel and the second supporting surface.

Illustratively, the haptic feedback panel module further includes: the protective cover plate is positioned on the light emitting side of the touch display panel, and the edge of the protective cover plate at least partially exceeds the edge of the touch display panel; the edge of the protective cover plate is stacked on one side, far away from the rear shell part, of the second supporting area, and at least one part of the elastic buffer connecting piece is further connected between the second supporting area and the protective cover plate.

Illustratively, the haptic feedback panel module and the support end are respectively bonded with the elastic buffer connector.

Illustratively, the elastic buffer connector comprises at least one of double-sided foam, silicone, and rubber.

The haptic feedback device further includes at least two spacing supports having axially extending in a direction perpendicular to the haptic feedback panel module, and having axially opposite first and second ends, the first end being connected to the non-touch side of the haptic feedback panel module and the second end being connected to the rear housing portion.

Illustratively, the rear housing portion is provided with a mounting hole, the second end of the limit support member passes through the mounting hole, and an elastic buffer member is disposed between the hole side wall of the mounting hole and the limit support member.

The second end of the limiting support member is provided with a limiting portion extending out of the mounting hole, the outer diameter of the limiting portion is larger than the inner diameter of the mounting hole, at least one portion of the elastic buffer member is located in the mounting hole and is arranged between the hole side wall of the mounting hole and the limiting support member in a cushioning mode, and at least one portion of the elastic buffer member is located out of the mounting hole and is arranged between the limiting portion and the rear shell portion in a cushioning mode.

The haptic feedback drive module may include a piezoelectric driver having a fixed end rigidly connected to the haptic feedback panel module and a movable end rigidly connected to the rear housing portion, the piezoelectric driver being configured to vibrate in response to an excitation signal to drive the haptic feedback panel module.

Illustratively, the piezoelectric actuator is a cymbal-shaped piezoelectric actuator.

Illustratively, the following relationship is satisfied between the mass M1 of the housing and the mass M2 of the haptic feedback panel module: m1 is greater than or equal to 5M 2.

The beneficial effects brought by the embodiment of the disclosure are as follows:

The embodiment of the disclosure provides a haptic feedback device, including haptic feedback panel module, haptic feedback drive module and shell, wherein the shell includes backshell part and side frame part, the backshell part is located haptic feedback panel module's non-touch side, side frame part is located haptic feedback panel module's side all around, haptic feedback drive module locates haptic feedback panel module with in the space that the backshell part encloses and forms, wherein, in the direction of perpendicular haptic feedback panel module, the side frame part has keeping away from the supporting end of backshell part, the supporting end is used for supporting and fixing haptic feedback panel module, wherein haptic feedback panel module's week side edge with have the clearance between the supporting end, and be equipped with elasticity buffering connecting piece in the clearance, this elasticity buffering connecting piece will haptic feedback panel module with the supporting end is connected.

Therefore, the haptic feedback driving module can drive the haptic feedback panel module to generate haptic feedback under the action of an excitation electric signal, a gap is reserved between the haptic feedback panel module and the side frame part, and the haptic feedback panel module is in soft connection with the side frame part through the elastic buffer connecting piece arranged in the gap, so that the rear shell part and the side frame part of the shell are utilized to elastically buffer and protect the impact on the periphery and the downward direction of the haptic feedback panel module, so that the impact resistance of the haptic feedback device is improved, the problem that the haptic feedback driving module is damaged due to violent extrusion is avoided, and the haptic feedback driving module is suitable for the fields with higher requirements on the impact resistance, such as vehicle-mounted display and the like.

Drawings

FIG. 1 illustrates a schematic cross-sectional structure of a haptic feedback device provided in some embodiments of the present disclosure;

fig. 2 illustrates a top view of a haptic feedback device provided in some embodiments of the present disclosure.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Before explaining the haptic feedback device provided by the embodiments of the present disclosure in detail, the following description is made on the related art:

In the related art, haptic feedback technology has been applied to numerous electronic fields, such as consumer electronics fields of mobile phones, game players, and the like. Generally, the consumer electronics field employs actuators such as linear motors, eccentric rotors, etc. to achieve haptic feedback. These haptic feedback techniques have the characteristics of low driving power, response time, narrow bandwidth, etc.

With the development of vehicle-mounted display technology, vehicle-mounted display screens are larger and larger in number. The on-screen touch feedback function is integrated on the vehicle-mounted display screen, so that safety and experience of finger interaction on the screen of a driver can be enriched.

However, since the safety requirements in the fields of automotive electronics and the like are high, the impact resistance of the haptic feedback device is higher, so as to avoid damage to the haptic feedback module.

In order to solve the above-described problems, embodiments of the present disclosure provide a haptic feedback device capable of improving impact resistance of the haptic feedback device.

As shown in fig. 1, a haptic feedback device provided by an embodiment of the present disclosure includes:

The touch feedback panel module 10 comprises a touch side 10A and a non-touch side 10B which are arranged opposite to each other;

a housing 20 including a rear housing portion 21 provided on the non-touch side 10B of the haptic feedback panel module 10, and a side frame portion 22 provided around the peripheral side of the haptic feedback panel module 10; and

The haptic feedback driving module 30 is disposed in a space defined by the haptic feedback panel module 10 and the rear housing portion 21 and connected to the haptic feedback panel module 10, and the haptic feedback driving module 30 is configured to drive the haptic feedback panel module 10 to generate haptic feedback in response to an excitation electric signal; wherein,

In the direction perpendicular to the haptic feedback panel module 10, the end of the side frame 22 away from the rear housing 21 is a supporting end 221, a gap S is provided between the peripheral edge of the haptic feedback panel module 10 and the supporting end 221, and an elastic buffer connector 40 is disposed in the gap S, and the elastic buffer connector 40 connects the supporting end 221 and the haptic feedback panel module 10.

In the above-mentioned scheme, the haptic feedback driving module 30 is disposed in a space formed by enclosing the haptic feedback panel module 10 and the rear housing portion 21, so that the haptic feedback driving module 30 can drive the haptic feedback panel module 10 to generate haptic feedback under the action of the exciting electric signal; in the direction perpendicular to the haptic feedback panel module, the side frame portion 22 has a supporting end 221 far away from the rear shell portion 21, the supporting end 221 is used for supporting and fixing the haptic feedback panel module 10, a gap S is formed between the peripheral edge of the haptic feedback panel module 10 and the supporting end 221, and an elastic buffer connector 40 is disposed in the gap S, and the elastic buffer connector 40 flexibly connects the haptic feedback panel module 10 and the supporting end 221, so that the peripheral direction of the haptic feedback panel module 10 (i.e. the front, rear, left and right directions of the haptic feedback panel module 10) and the out-of-plane downward direction (i.e. the direction from the touch side 10A to the non-touch side 10B) can be elastically buffered and protected, so as to improve the impact resistance of the haptic feedback device, and avoid the problem that the haptic feedback driving module 30 is damaged due to the force squeezing the haptic feedback driving module 30.

In some exemplary embodiments, as shown in fig. 1, the haptic feedback panel module 10 includes a haptic feedback panel, and the haptic feedback panel includes a touch display panel 11, where the touch display panel 11 includes a light emitting surface 11A and a bottom surface 11B disposed opposite to each other, and a peripheral side surface 11C located between the light emitting surface 11A and the bottom surface 11B; in a direction from the side frame portion 22 to the touch feedback panel module 10, the support end 221 includes a first support area 2211 and a second support area 2212, the first support area 2211 is located at one side of the second support area 2212 near the touch display panel 11, and the second support area 2212 protrudes relative to the first support area 2211 along a light emitting direction of the touch display panel 11 toward a direction near the touch side 10A, so that the first support area 2211 forms a first support surface a parallel to the touch display panel 11 and a second support surface b perpendicular to the touch display panel 11; the edge portion of the touch display panel 11 is stacked on a side of the first supporting surface a away from the rear housing portion 21, and at least one portion of the elastic buffer connector 40 is connected between the bottom surface 11B of the touch display panel 11 and the first supporting surface a, and at least another portion of the elastic buffer connector is connected between the peripheral side surface 11C of the touch display panel 11 and the second supporting surface B.

With the above-mentioned configuration, the support end 221 of the side frame 22 is configured to have the first support area 2211 and the second support area 2212, the first support area 2211 protrudes toward the touch side 10A relative to the second support area 2212, that is, the second support area 2212 has a groove shape, so that a first support surface a parallel to the touch display panel 11 and a second support surface b perpendicular to the touch display panel 11 are formed in the second support area 2212, a gap S is formed between the back edge portion of the touch display panel 11 and the second support surface b and is connected by the elastic buffer connection member 40, and a gap S is formed between the peripheral side 11C of the touch display panel 11 and the first support surface a and is flexibly connected by the elastic buffer connection member 40. In this way, the touch display panel 11 can be effectively buffered and limited by the impact force from the surrounding direction and from the downward direction, so as to avoid violent extrusion of the haptic feedback driving module 30 connected with the touch display panel 11 and avoid damage to the haptic feedback driving module 30.

It is understood that in other embodiments, not shown, the first support area 2211 and the second support area 2212 may also be configured to be in the same plane, and the rear edge of the touch display panel 11 may be directly connected to the first support area 2211 through the elastic buffer connection 40.

In the above embodiment, the touch feedback panel 11 is selected as the touch display panel, but in other embodiments not shown, the touch feedback panel may not be limited to the touch display panel, but may be a touch substrate having only a touch function or a display panel having only a display function.

Furthermore, in some exemplary embodiments, as shown, the haptic feedback panel module 10 further includes: a protective cover plate 12 located on the light emitting side of the touch display panel 11, wherein an edge of the protective cover plate 12 at least partially exceeds an edge of the touch display panel 11; wherein, the edge of the protective cover 12 is stacked on the side of the second support area 2212 away from the rear housing portion 21, and at least a portion of the elastic buffer connection 40 is further connected between the second support area 2212 and the protective cover 12.

With the above-mentioned arrangement, the elastic buffer connection member 40 is flexibly connected between the protection cover 12 and the second supporting area 2212 of the side frame 22, so that the protection cover 12 can be buffered and protected from the impact in the downward direction (i.e. from the non-touch side to the touch side).

Furthermore, in some exemplary embodiments, the haptic feedback panel module 10 and the support end 221 are bonded to the elastic buffer connector 40, respectively. For example, the elastic cushion 40 may include at least one of double-sided foam, silicone, and rubber. It is understood that the elastic buffer connector 40 may be made of other low-hardness low-elastic modulus glue besides double-sided foam, silicone, and rubber.

Furthermore, in some exemplary embodiments, as shown in fig. 1 and 2, the haptic feedback device further includes at least two spacing supports 50, the spacing supports 50 having first ends 51 and second ends 52 axially opposite in a direction perpendicular to the haptic feedback panel module 10, the first ends 51 being connected to the non-touch side 10B of the haptic feedback panel module 10, the second ends 52 being connected to the rear housing portion 21.

By adopting the above scheme, at least two limit supports 50 are disposed between the haptic feedback panel module 10 and the rear housing portion 21, and the limit supports 50 extend axially along a direction perpendicular to the haptic feedback panel module, the haptic feedback panel module 10 can be protected from instantaneous impact in an upward direction (i.e. a direction from the non-touch side 10B to the touch side 10A) in the plane, so as to further avoid violent extrusion of the haptic feedback driving module 30 between the haptic feedback panel module 10 and the rear housing portion 21, resulting in damage to the haptic feedback driving module 30.

In some exemplary embodiments, as shown in fig. 1, a mounting hole 210 is formed in the rear housing portion 21, the second end 52 of the limit support 50 passes through the mounting hole 210, and an elastic buffer 53 is disposed between a hole sidewall of the mounting hole 210 and the limit support 50. For example, the elastic buffer 53 may be a soft rubber pad, such as a silica gel pad or a rubber pad. In this way, by providing the elastic buffer 53 between the hole sidewall of the mounting hole 210 and the limit support 50, it is possible to further buffer the haptic feedback device when the haptic feedback device is impacted, so as to improve the impact resistance of the haptic feedback device.

In some exemplary embodiments, as shown in fig. 1, the second end 52 of the limiting support 50 is provided with a limiting portion 54 extending out of the mounting hole 210, the limiting portion 54 has an outer diameter larger than an inner diameter of the mounting hole 210, at least one portion of the elastic buffer 53 is located in the mounting hole 210 and is disposed between the hole sidewall of the mounting hole 210 and the limiting support 50, and at least another portion is located out of the mounting hole 210 and is disposed between the limiting portion 54 and the rear housing portion 21.

By adopting the above scheme, a part of the elastic buffer member 53 is located between the hole side wall of the mounting hole 210 and the limit support member 50, and another part is located around the mounting hole 210 and is arranged between the limit portion 54 and the rear housing portion 21 in a cushioning manner, so that the impact of a large magnitude in the instant can be sufficiently buffered.

In some embodiments, the limit support 50 may be selected from, but not limited to, a limit screw 50', the limit screw 50' may include a threaded shaft 56 and a nut 55, and the limit portion 54 may be the nut 55 of the limit screw 50 '.

Taking the limiting support 50 as an example, as shown in fig. 1, the non-touch side 10B of the haptic feedback panel module 10 may be provided with a hard back plate 13, the hard back plate 13 may be provided with a screw hole 130, one end of the screw 56 of the limiting screw 50' is screwed into the screw hole 130, and the other end of the screw is threaded through the mounting hole 210, and is limited by the nut 55. The design is convenient to disassemble and assemble.

It is understood that the specific configuration of the limiting support 50 is not limited thereto, and for example, the limiting support 50 may be a support column or the like that abuts between the backlight module and the rear case portion 21.

In addition, in the related art, in the consumer electronics field such as mobile phones and game palm machines, haptic feedback is mostly realized by actuators such as linear motors and eccentric rotors, and the haptic feedback technology has the characteristics of low driving power, long response time, narrow bandwidth and the like. The requirements on the safety of automobiles are higher, and the haptic feedback technology used in the consumer electronics field is difficult to be applied in the vehicle-mounted field. The inventor of the application discovers that the piezoelectric driver has the characteristics of strong driving capability, wide bandwidth range, high response speed and the like, and can be suitable for realizing haptic feedback on a vehicle-mounted display touch control film group.

Thus, in some exemplary embodiments, as shown in fig. 1, the haptic feedback drive module 30 includes a piezoelectric driver 30', the piezoelectric driver 30' having a fixed end 30A and a moving end 30B, the moving end 30B being rigidly connected to the haptic feedback panel module 10, the fixed end 30A being rigidly connected to the rear housing portion 21, the piezoelectric driver 30' being configured such that, in response to an excitation signal, the moving end 30B vibrates to drive the haptic feedback panel module 10 to vibrate.

The piezoelectric driver 30', i.e., the piezoelectric transducer, is a device for performing energy conversion, and converts an electric signal generated by the ultrasonic generator into a mechanical vibration signal, i.e., converts electric energy into mechanical energy, using the piezoelectric effect of the piezoelectric ceramic. The piezoelectric driver 30' should have high electromechanical conversion efficiency, small loss, good stability of resonance frequency, and the like. However, the piezoelectric actuator 30' may have problems in that the piezoelectric ceramics have low strength, are easily broken, and have large fluctuation in the operating frequency for a long time.

In the haptic feedback device provided in the embodiments of the present disclosure, the haptic feedback panel module 10 and the side frame portion 22 are flexibly connected by the elastic buffer connection member 40, so that the haptic feedback panel module 10 can be buffered and protected in the in-plane peripheral direction and in the out-of-plane downward instant large-amplitude impact, so as to avoid the damage to the piezoelectric driver 30', and therefore, the piezoelectric driver 30' can be applied to the vehicle-mounted display field, and the impact resistance requirement is met.

Furthermore, in some exemplary embodiments, the piezoelectric driver 30 'may be selected from piezoelectric drivers 30' having a mechanical displacement amplifying function, including but not limited to cymbal-shaped piezoelectric drivers.

For example, as shown in fig. 2, the cymbal-shaped piezoelectric actuator may include a cymbal-shaped metal sheet 31 and a piezoelectric material layer 32, one of the cymbal-shaped metal sheets 31 being disposed at opposite sides of the piezoelectric material layer 32, respectively, one of the cymbal-shaped metal sheets 31 being used as a moving end 30B of the piezoelectric actuator 30 'and being rigidly connected to the haptic feedback panel module 10, and the other of the cymbal-shaped metal sheets 31 being used as a fixed end 30A of the piezoelectric actuator 30' and being rigidly connected to the rear case portion 21. The cymbal-shaped piezoelectric driver can drive the haptic feedback panel module 10 to vibrate together under the action of the excitation signal so as to generate haptic feedback effect. The piezoelectric material layer 32 may be selected.

In some embodiments, the piezoelectric material layer 32 may be a piezoelectric ceramic material, such as lead zirconate titanate (Pb (Zr, ti) O ₃, PZT), and may be at least one of aluminum nitride (AlN), zinc oxide (ZnO), barium titanate (BaTiO ₃), lead titanate (PbTiO ₃), potassium niobate (KNbO ₃), lithium niobate (LiNbO ₃), lithium tantalate (LiTaO ₃), and lanthanum gallium silicate (La ₃Ga₅SiO₁₄).

The performance of the piezoelectric ceramic as a key core component of the piezoelectric actuator 30 'directly affects the energy conversion efficiency of the piezoelectric actuator 30'. The piezoelectric ceramic is ferroelectric ceramic material with piezoelectric effect after DC high voltage polarization. For example, the piezoelectric ceramic of the piezoelectric actuator 30' may be lead zirconate titanate (PZT) ceramic.

Lead zirconate titanate (PZT) ceramic is prepared by taking Pb ₃O、TiO₂、ZrO₂ and a small amount of additives as raw materials, presintering, synthesizing and sintering at high temperature to obtain PbTiO ₃-PbZrO₃ solid solution. The key performance parameters of the PZT piezoelectric ceramic comprise a piezoelectric constant d ₃₃, the relation between stress (strain) and electric field (electric displacement) is reflected, and the larger the value is, the higher the piezoelectric conversion efficiency of the ceramic is; the dielectric constant epsilon r reflects the polarization property of the material, and the larger the dielectric constant is, the larger the active power is, and the smaller the dielectric loss is; the electromechanical coupling coefficient Kp can measure the physical quantity of the ceramic piezoelectric performance, and is a reflection of the capability of the piezoelectric ceramic for electromechanical-electric energy conversion.

It will be understood, of course, that in practical applications, the material of the piezoelectric material layer 32 may be specifically selected according to practical requirements, which is not limited herein. Wherein, when the piezoelectric material layer 32 made of PZT is used, since PZT has a high piezoelectric coefficient, the piezoelectric characteristics of the corresponding tactile feedback panel are ensured, the corresponding tactile feedback panel can be applied to the tactile feedback device, and PZT has a high light transmittance, and when it is integrated into the display device, the display quality of the display device is not affected.

Furthermore, it should be noted that in some embodiments, the specific manner of making the rigid connection between the piezoelectric driver 30 'and the haptic feedback panel module 10, and between the piezoelectric driver 30' and the rear housing portion 21, may include, but is not limited to: screw connection, metal solder welding, girth welding, laser welding, high hardness high elastic modulus gluing (such as epoxy glue), and the like.

In addition, if the mass M1 of the housing 20 is too small, a problem may occur in that the piezoelectric driver 30 'vibrates the housing 20 also under an excitation signal, so that the mass M1 of the housing 20 should be greater than the mass M2 of the haptic feedback panel module 10 in order to make the piezoelectric driver 30' vibrate only the haptic feedback panel module 10 under the excitation signal as much as possible. In some exemplary embodiments, the following relationship is satisfied between the mass M1 of the housing 20 and the mass M2 of the haptic feedback panel module 10: m1 is greater than or equal to 5M 2. This ensures that the piezoelectric driver 30' only drives the haptic feedback panel module 10 to vibrate under an excitation signal.

In the embodiment of the disclosure, the touch display panel 11 may be an LCD (Liquid CRYSTAL DISPLAY) panel, a Micro LED (Micro light emitting diode) display panel, a QD (quantum dot) display panel, or the like.

In addition, the haptic feedback device provided in the embodiment of the disclosure can be applied to the fields of medical treatment, automobile electronics, motion tracking systems and the like, and is particularly suitable for the field of vehicle-mounted display screens.

The haptic feedback device provided by the embodiment of the invention can be any product or component with a display function or a touch control function, such as a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the haptic feedback device will be understood by those skilled in the art, and will not be described in detail herein, nor should they be considered as limiting the invention.

In a specific implementation, the haptic feedback device provided in the embodiments of the present invention may further include other film layers well known to those skilled in the art, which are not described in detail herein.

In the implementation process, the touch position of the operating body can be determined through the touch feedback device, so that corresponding vibration waveforms, amplitudes and frequencies are generated, and man-machine interaction can be realized. Of course, the haptic feedback device may be applied to the fields of medical treatment, automotive electronics, motion tracking, etc. according to actual needs, and is not limited herein.

When the haptic feedback device provided by the embodiment of the disclosure is subjected to impact reliability test, the impact reliability test can be completed through the impact reliability test equipment, wherein the haptic feedback device is installed and fixed on a moving platform of the test equipment, after test conditions are set on the test equipment, the moving platform drives the whole haptic feedback device to descend to a certain height and then rapidly stop, so that relative rapid movement is generated among a haptic feedback panel, a haptic feedback driver and a shell in the whole haptic feedback device, and impact action on the haptic feedback panel and the haptic feedback driver by corresponding acceleration values is realized, and the influence of severe conditions such as rapid impact and the like of the haptic feedback device in the actual use process is simulated. The test conditions may include, but are not limited to, test curves, test altitude, target acceleration values and cycle times, pulse width, and the like. The test height may be between 50 and 200mm, in particular embodiments 50mm, 100mm, 200mm. The acceleration value may be between 10 and 100g, in particular embodiments 30g, 40g, 50g, etc. The test curve may be a half sine wave, a trapezoidal wave, a back peak sawtooth wave, etc. By analyzing the impact reliability test result of the haptic feedback device provided by the embodiment of the disclosure, the haptic feedback device provided by the embodiment of the disclosure can effectively avoid damage to the haptic feedback panel and the haptic feedback driver under the conditions of collision, impact and the like.

The following points need to be described:

(1) The drawings of the embodiments of the present disclosure relate only to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

(2) In the drawings for describing embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced for clarity, i.e., the drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

(3) The embodiments of the present disclosure and features in the embodiments may be combined with each other to arrive at a new embodiment without conflict.

The above is merely a specific embodiment of the disclosure, but the protection scope of the disclosure should not be limited thereto, and the protection scope of the disclosure should be subject to the claims.

Claims

1. A haptic feedback device, comprising:

2. A haptic feedback device as recited in claim 1 wherein said haptic feedback panel module includes a touch display panel including a light exit surface and a bottom surface disposed opposite each other and a peripheral side surface between said light exit surface and said bottom surface;

3. A haptic feedback device as recited in claim 2 wherein said haptic feedback panel module further comprises: the protective cover plate is positioned on the light emitting side of the touch display panel, and the edge of the protective cover plate at least partially exceeds the edge of the touch display panel; the edge of the protective cover plate is stacked on one side, far away from the rear shell part, of the second supporting area, and at least one part of the elastic buffer connecting piece is further connected between the second supporting area and the protective cover plate.

4. A haptic feedback device as recited in claim 1 wherein said haptic feedback panel module and said support end are bonded to said elastic cushion connector, respectively.

5. A haptic feedback device as recited in claim 4 wherein said elastic cushion connector includes at least one of double sided foam, silicone, rubber.

6. A haptic feedback device as recited in claim 1 further comprising at least two limit supports having axially extending directions perpendicular to said haptic feedback panel module, and having axially opposite first and second ends, said first end being connected to a non-touch side of said haptic feedback panel module, said second end being connected to said rear housing portion.

7. A haptic feedback device as recited in claim 6 wherein said rear housing portion is provided with a mounting hole through which said second end of said limit support member passes and an elastic buffer member is provided between a hole sidewall of said mounting hole and said limit support member.

8. A haptic feedback device as recited in claim 7 wherein said second end of said spacing support member is provided with a spacing portion extending out of said mounting hole, said spacing portion having an outer diameter greater than an inner diameter of said mounting hole, and wherein at least a portion of said elastic cushioning member is positioned within said mounting hole and is positioned between a hole sidewall of said mounting hole and said spacing support member, and at least another portion is positioned out of said mounting hole and is positioned between said spacing portion and said rear housing portion.

9. A haptic feedback device as recited in claim 1 wherein said haptic feedback drive module includes a piezoelectric driver having a fixed end rigidly connected to said haptic feedback panel module and a movable end rigidly connected to said rear housing portion, said piezoelectric driver being configured to vibrate in response to an excitation signal, said movable end to vibrate said haptic feedback panel module.

10. A haptic feedback device as recited in claim 9 wherein said piezoelectric actuator is a cymbal-shaped piezoelectric actuator.

11. A haptic feedback device as recited in claim 1 wherein said mass M1 of said housing and said mass M2 of said haptic feedback panel module satisfy the following relationship: m1 is greater than or equal to 5M 2.