WO2021203929A1 - 振动模组及电子装置 - Google Patents
振动模组及电子装置 Download PDFInfo
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- WO2021203929A1 WO2021203929A1 PCT/CN2021/081233 CN2021081233W WO2021203929A1 WO 2021203929 A1 WO2021203929 A1 WO 2021203929A1 CN 2021081233 W CN2021081233 W CN 2021081233W WO 2021203929 A1 WO2021203929 A1 WO 2021203929A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Definitions
- This application relates to the field of tactile feedback, and in particular to a vibration module and an electronic device.
- a vibration module including:
- the touch pad includes a touch surface, the touch surface is located on the side of the touch pad away from the base;
- the first piezoelectric element is arranged between the base and the touch panel, the first piezoelectric element connects the touch panel and the base, and the first piezoelectric element has a An axis, the first piezoelectric element can expand and contract in the direction of the first axis under the action of an electric field to drive the touch panel to vibrate.
- the touch panel For the way of vibrating along the thickness direction of the touch panel, the touch panel generally only has a strong longitudinal direction (along the touch panel's The thickness direction) vibrates, and the farther away from the contact area, the weaker the vibration, which results in uneven vibration of the touch panel, which makes it impossible to show the effect similar to pressing a physical button in each area of the touch panel.
- the first piezoelectric element is connected to the touch panel and the base respectively, and the first axis of the first piezoelectric element is parallel or inclined to the touch noodle. After the first piezoelectric element is subjected to a corresponding electric field, it can expand and contract in a direction parallel to the first axis.
- the touch panel By controlling the size of the electric field, the touch panel can be driven in the transverse direction (parallel to the touch control panel).
- the direction of the surface) vibration In particular, in the lateral vibration mode, the entire touchpad vibrates uniformly, avoiding the problem of inconsistent vibration intensity of the touchpad in each area, so that each area of the touchpad can be well represented The effect is similar to pressing a physical button.
- an electronic device including the vibration module described in the first aspect of the fundamental application, and the vibration module is disposed on the housing.
- the touch panel in the above-mentioned vibration module can vibrate evenly in the lateral direction, when the user is using the electronic device provided with the above-mentioned vibration module, the user can obtain information in each area of the touch panel. Uniform vibration feedback.
- FIG. 1 is a side view structure diagram of a vibration module according to an embodiment of the present application
- FIG. 2 is a top structural view of a vibration module according to an embodiment of the present application.
- FIG. 3 is a schematic structural diagram of a vibration module according to an embodiment of the present application.
- Fig. 4 is a schematic structural diagram of a vibration module according to an embodiment of the present application.
- FIG. 5 is a schematic diagram of an electronic device using a vibration module according to an embodiment of the present application.
- FIG. 6 is a schematic diagram of the positions of the housing and the vibration module of the electronic device according to an embodiment of the present application.
- the touch panel generally only has a strong longitudinal direction (along the touch panel) in the area that is in contact with the driving element (such as a linear motor or a piezoelectric motor).
- the thickness direction of the control panel vibrates, and the farther away from the contact area, the weaker the vibration, which results in uneven vibration of the touch panel, which makes it impossible to reflect the effect similar to pressing the physical button in each area of the touch panel.
- some embodiments of the present application provide a vibration module to solve the problem of uneven vibration of the touch panel.
- the vibration module 10 includes a base 110, a touch panel 120, a first piezoelectric element 130 and a second piezoelectric element 140, the touch panel 120 and the base
- the base 110 is arranged at intervals
- the first piezoelectric element 130 and the second piezoelectric element 140 are arranged at intervals, and both are arranged between the touch panel 120 and the base 110, the first piezoelectric element 130 and the second piezoelectric element 140
- the touch pad 120 includes a touch surface 121, the touch surface 121 is a flat surface, and the touch surface 121 is located on a side of the touch pad 120 away from the base 110.
- the first piezoelectric element 130 and the second piezoelectric element 140 can generate inverse piezoelectricity under the action of an electric field. The effect occurs to expand and contract, so as to drive the touchpad 120 to vibrate slightly in the lateral direction. By feeding the vibration back to the user's finger, the user can feel the vibration feedback similar to pressing a physical button.
- the first piezoelectric element 130 has a strip-shaped structure.
- the first piezoelectric element 130 having a strip-shaped structure has a first axis 1301, which is the longest central axis of the strip structure. 1301 is parallel to the touch surface 121;
- the second piezoelectric element 140 also has a strip structure, and the second piezoelectric element 140 in a strip structure has a second axis 1401, and the second axis 1401 is the longest of the strip structure
- the central axis, the second axis 1401 is parallel to the touch surface 121.
- the second axis 1401 is collinear with the first axis 1301.
- Both the first piezoelectric element 130 and the second piezoelectric element 140 are piezoelectric ceramics.
- the first piezoelectric element 130 and the second piezoelectric element 140 having a strip structure can more effectively expand and contract along the first axis 1301 under the action of an electric field, thereby increasing the vibration effect of the touch panel 120.
- the first piezoelectric element 130 and the second piezoelectric element 140 having a strip structure can expand and contract in the k31 mode under the action of an electric field, that is, expand and contract in a direction parallel to the first axis 1301. It should be noted that, for the parallel described above, due to the influence of the actual manufacturing process, when there is a slight tilt (eg ⁇ 5°) between the two, it can also be considered as belonging to the “parallel” category of this application.
- the two ends of the first piezoelectric element 130 along the direction of the first axis 1301 are respectively a first end 131 and a second end 132.
- the first end 131 of the first piezoelectric element 130 is connected to the touch pad 120 and faces the base 110.
- the second end 132 is connected to the base 110; the two ends of the second piezoelectric element 140 in the direction along the second axis 1401 are respectively the third end 141 and the The fourth end 142.
- the first end 131 of the first piezoelectric element 130 is fixedly connected to the side of the touch panel 120 facing the base 110 (that is, connected to the bottom of the touch panel 120), and the second end 132 is fixedly connected to the base 110.
- the third end 141 of the second piezoelectric element 140 is fixedly connected to the side of the touch panel 120 facing the base 110 (that is, connected to the bottom of the touch panel 120), and the fourth end 142 is fixedly connected to the base 110. Since the touch panel 120 and the housing surface in some devices are on or approximately on the same plane, the above design can prevent the first piezoelectric element 130 and the second piezoelectric element 140 from being connected to the side edges of the touch panel 120. A large height difference should be formed between the touch panel 120 and the surface of the housing to form a space for accommodating the first piezoelectric element 130. Similarly, the arrangement of the second piezoelectric element 140 in this embodiment is the same as that of the first piezoelectric element 130, so it also has the same effect, which will not be repeated here.
- the two opposite ends of the first piezoelectric element 130 in the above embodiment are respectively connected to the base 110 and the touch pad 120, the expansion and contraction of the first piezoelectric element 130 can be fully utilized to make the first pressure
- the telescopic movement of the electrical element 130 can be efficiently converted into the vibration of the touch panel 120 to increase the vibration amplitude of the touch panel 120.
- the second piezoelectric element 140 which has a similar connection relationship with the base 110 and the touch pad 120, also has the above-mentioned effect, which will not be repeated here.
- the first piezoelectric element 130 is fixed to the bottom of the touchpad 120 by providing a connecting piece 101 on one side of the first end 131, and is fixed on the bottom of the touch pad 120 on one side of the second end 132.
- the connecting member 101 is fixed to the base 110, and the connecting members 101 provided at the first end 131 and the second end 132 are respectively located on opposite sides of the first piezoelectric element 130.
- the second piezoelectric element 140 is fixed to the bottom of the touch pad 120 by providing a connector 101 on one side of the third end 141, and is fixed to the base by a connector 101 on one side of the fourth end 142 110.
- the connecting members 101 provided at the third end 141 and the fourth end 142 are respectively located on opposite sides of the second piezoelectric element 140.
- each connecting member 101 is glue or viscous foam, and the thickness of each connecting member 101 in a direction perpendicular to the touch surface 121 is less than 1 mm (the structural dimensions in the figure are only examples). Therefore, on the side of the first piezoelectric element 130 close to the touch panel 120, in addition to the position of the connector 101, there is also an area that abuts or almost abuts against the bottom of the touch panel 120 on this side; similarly, On the side of the second piezoelectric element 140 close to the touch panel 120, in addition to the position of the connector 101, there is an area on this side that abuts or almost abuts against the bottom of the touch panel 120.
- the vibration module 10 includes an abutting portion, the abutting portion is located between the base 110 and the touch pad 120, and the abutting portion abuts against the base 110 on the side close to the base 110 ( The abutting relationship is not shown in FIG. 1), and the touch pad 120 is abutted on the side close to the touch pad 120 (the abutting relationship is not shown in FIG. 1).
- the abutting portion may be a part of the structure of the first piezoelectric element 130 and/or the second piezoelectric element 140.
- the first piezoelectric element 130 is located on the other area of the side. Abut the bottom of the touchpad 120; on the side of the first piezoelectric element 130 close to the base 110, except for the area fixedly connected to the base 110, the other areas of the first piezoelectric element 130 on this side are connected to the base 110.
- the seat 110 abuts.
- the structure of the first piezoelectric element 130 corresponding to these contact areas serves as the contact portion of the vibration module 10.
- the second piezoelectric element 140 on the side of the second piezoelectric element 140 close to the touchpad 120, except for the area fixedly connected to the touchpad 120, the second piezoelectric element 140 is located in other areas on the side. Abut the bottom of the touchpad 120; on the side of the second piezoelectric element 140 close to the base 110, except for the area fixedly connected to the base 110, the second piezoelectric element 140 is in contact with the base in other areas on this side.
- the seat 110 abuts.
- the structure of the second piezoelectric element 140 corresponding to these contact areas serves as the contact portion of the vibration module 10.
- the above-mentioned abutment structure can play a role in supporting the touch panel 120, which is beneficial to prevent the touch panel 120 from being deformed when it is pressed.
- the first piezoelectric element 130 and the second piezoelectric element 140 and the touch panel 120 are only abutting, not fixedly connected, so any two abutting elements can be between the abutting areas. Relative movement, so as not to hinder the expansion and contraction movement of the first piezoelectric element 130 and the second piezoelectric element 140.
- the first piezoelectric element 130 and the second piezoelectric element 140 are on the side close to the base 110, except for the area where the connecting member 101 is provided to connect to the base 110, the other areas abut against the base 110.
- the first piezoelectric element 130 and the second piezoelectric element 140 contact the bottom of the control panel 120, thereby supporting the touch panel 120, which is beneficial to prevent the touch panel 120 from deforming when pressed.
- the connecting member 101 in some embodiments is not limited to glue and viscous foam, and the connecting member 101 can also be made of other viscous materials.
- the first piezoelectric element 130 and the second piezoelectric element 140 may also be connected to the touch panel 120 and the base 110 by welding, screw connection, or the like.
- the first piezoelectric element 130 and the second piezoelectric element 140 can be fixedly connected to the base 110 and the touch control panel by means of fixed connection such as glue curing, welding, etc.
- the first axis 1301 and the second axis 1401 should be designed in parallel at this time to prevent the first piezoelectric element 130 and the second piezoelectric element 140 from being broken due to the different expansion and contraction directions.
- the connecting member 101 when the connecting member 101 is made of an elastic material such as foam, the first piezoelectric element 130 and the second piezoelectric element 140 can be elastically connected to the touch pad 120 through the connecting member 101, so that Both can rotate a slight angle with respect to the touchpad 120 without easily damaging the connector 101.
- the first axis 1301 can be inclined or even perpendicular to the second axis 1401, so that the touchpad 120 It can realize vibration in more directions and improve the flexibility of lateral vibration.
- the first piezoelectric element 130 in some embodiments does not need to be connected to the touch pad 120 and the base 110 at the two ends respectively.
- the first piezoelectric element 130 may also be connected to one of the touch pad 120 and the base 110 in the middle area along the direction of the first axis 1301, and the touch pad 120 and the base 110 may be connected at the end.
- the area where the first piezoelectric element 130 is connected to the base 110 and the touch pad 120 is separated from each other in the direction of the first axis 1301.
- the second piezoelectric element 140 in some embodiments does not need to be connected to the touch panel 120 and the base 110 at the two ends respectively, and the second piezoelectric element 140 may also be located in the middle area along the second axis 1401 direction. Connect one of the touchpad 120 and the base 110, and connect the other one of the touchpad 120 and the base 110 at the end, as long as the second piezoelectric element 140 is connected to the base 110 and the one connected to the touchpad 120 It is only necessary for the regions to have an interval in the direction of the second axis 1401.
- both ends of the first piezoelectric element 130 are connected to the touch pad 120 and the base 110, and both ends of the second piezoelectric element 140 are connected to the touch pad 120 and the base 110, at this time, the first piezoelectric element
- the element 130 and the second piezoelectric element 140 undergo expansion and contraction along the direction of the first axis 1301 under the reverse piezoelectric effect, so that the expansion and contraction of the two are kept synchronized, so that the touch panel 120 can be driven to move laterally in this direction, and
- the amount of lateral displacement of the touch panel 120 is equivalent to the amount of expansion and contraction of one of the first piezoelectric element 130 and the second piezoelectric element 140.
- the frequency of the electric field acting on the first piezoelectric element 130 and the second piezoelectric element 140 it is possible to achieve the same frequency for the two piezoelectric elements to expand and contract, thereby driving the touch control.
- the plate 120 vibrates laterally at the same frequency.
- the first piezoelectric element 130 and the second piezoelectric element 140 are both connected to the touch panel 120, and both can drive the touch panel 120 in the same direction, in order to prevent the expansion and contraction of the two On the contrary or the amount of expansion and contraction is different, the effect of the two on the touchpad 120 is not synchronized, which causes the weaker connection with the touchpad 120 to fall off (for example, the connection is broken). Therefore, in this embodiment
- the first piezoelectric element 130 and the second piezoelectric element 140 should maintain synchronized expansion and contraction directions and amounts during operation. Specifically, the material, size, and function of the first piezoelectric element 130 and the second piezoelectric element 140 can be controlled. Parameters such as the frequency of the electric field are used to realize the synchronous expansion and contraction of the touch panel 120, the first piezoelectric element 130 and the second piezoelectric element 140.
- the first piezoelectric element 130 and the second piezoelectric element 140 can expand and contract in a direction parallel to the first axis 1301 after being subjected to the corresponding electric field, and the touch panel can be driven by controlling the magnitude of the electric field 120 vibrates in the lateral direction (a direction parallel to the touch surface 121).
- the entire touchpad 120 vibrates uniformly, which can avoid the problem of inconsistent vibration intensity of the touchpad 120 in each area, so that each area of the touchpad 120 can well reflect the The effect is similar to pressing the physical button.
- the first axis 1301 of the first piezoelectric element 130 and the second axis 1401 of the second piezoelectric element 140 may also be arranged in a non-collinear manner, as long as Keep the two parallel.
- the structure of the first piezoelectric element 130 and the second piezoelectric element 140 in some embodiments is not limited to the strip-shaped structure. In some embodiments, the structure of the first piezoelectric element 130 and the second piezoelectric element 140 is plate-shaped. structure.
- the number of the first piezoelectric element 130 and the second piezoelectric element 140 in some embodiments is not limited to one, the number of the first piezoelectric element 130 may be two, three or more, and the second piezoelectric element
- the number of 140 can also be two, three or more, and the number of the first piezoelectric element 130 and the second piezoelectric element 140 can be the same or different, and multiple piezoelectric elements can provide greater drive Force to make the touchpad 120 vibrate.
- the positions of the first piezoelectric element 130 and the second piezoelectric element 140 in the vibration module 10 should have a symmetrical structure.
- the arrangement positions of the first piezoelectric element 130 and the second element between the touch panel 120 and the base 110 include but are not limited to the above-mentioned embodiments.
- the first axis 1301 and the second axis 1401 may be along any direction. But especially, when the touch panel 120 is a rectangular panel, the first axis 1301 and the second axis 1401 should be parallel to the long side or the short side of the touch panel 120, so that the touch panel 120 can be along the long side or the short side.
- Direction vibration when the touch panel 120 is a rectangular panel, the first axis 1301 and the second axis 1401 should be parallel to the long side or the short side of the touch panel 120, so that the touch panel 120 can be along the long side or the short side.
- Direction vibration when the touch panel 120 is a rectangular panel, the first axis 1301 and the second axis 1401 should be parallel to the long side or the short side of the touch panel 120, so that the touch panel 120 can be along the long side or the short side
- the projections of the first piezoelectric element 130 and the second piezoelectric element 140 and the projection of the touch panel 120 only partially overlap, that is, part of the A piezoelectric element 130 and a part of the second piezoelectric element 140 extend out of the space between the touch panel 120 and the base 110.
- the component is located between the two.
- the projections of the first piezoelectric element 130 and the second piezoelectric element 140 are completely within the projection of the touch panel 120, that is, the first piezoelectric element 130
- the second piezoelectric element 140 and the second piezoelectric element 140 are completely located in the space between the touch panel 120 and the base 110, thereby helping to reduce the size of the vibration module 10 in the lateral direction.
- the first piezoelectric element 130 and the second piezoelectric element 140 may be piezoelectric ceramics as a whole. In other embodiments, the first piezoelectric element 130 and the second piezoelectric element 140 are only provided with piezoelectric ceramics in the middle area, and the structures at both ends are not piezoelectric ceramics, and the structures at both ends may be plastic or rubber, and The connecting member 101 on the first piezoelectric element 130 and the second piezoelectric element 140 is disposed in the non-piezoelectric ceramic area.
- the vibration module 10 includes a first positive electrode 133, a first negative electrode 134, a second positive electrode 143, and a second negative electrode 144.
- the first positive electrode 133 and the first negative electrode 134 are respectively arranged on opposite sides of the first piezoelectric element 130
- the second positive electrode 143 and the second negative electrode 144 are respectively arranged On opposite sides of the second piezoelectric element 140.
- the first positive electrode 133 is disposed on the side of the first piezoelectric element 130 close to the touch panel 120
- the first negative electrode 134 is disposed on the first piezoelectric element 130 close to the base.
- the second positive electrode 143 is provided on the side of the second piezoelectric element 140 close to the touch panel 120, and the second negative electrode 144 is provided on the side of the second piezoelectric element 140 close to the base 110.
- the first positive electrode 133 and the first negative electrode 134 can be plating layers provided on the first piezoelectric element 130 by means of chemical plating, vacuum coating, etc.; the second positive electrode 143 and the second negative electrode 144 can be plating layers provided on the first piezoelectric element 130 by chemical plating, The coating layer provided on the second piezoelectric element 140 by means of vacuum coating or the like.
- the first positive electrode 133 and the first negative electrode 134, the second positive electrode 143 and the second negative electrode 144 can be other elements capable of generating an electric field.
- an electric field can be formed between the first positive electrode 133 and the first negative electrode 134 and between the second positive electrode 143 and the second negative electrode 144, and the voltage applied to each electrode can be adjusted to control The intensity of the electric field formed between the electrodes controls the expansion and contraction of the first piezoelectric element 130 and the second piezoelectric element 140, thereby controlling the touch panel 120 to vibrate in the lateral direction.
- the vibration module 10 further includes a pressure sensor 160, the pressure sensor 160 is arranged on the side of the touch panel 120 facing the base 110, the pressure sensor 160 is used to detect the touch panel 120 The amount of pressure.
- the system terminal can determine whether an electric field needs to be applied to the first piezoelectric element 130 and the second piezoelectric element 140 to drive the touch panel 120 to vibrate.
- the first piezoelectric element 130 and/or the second piezoelectric element 140 abuts against the bottom of the touch panel 120, the first piezoelectric element 130 and/or the second piezoelectric element 140 It can be used as the pressure sensor of the vibration module 10.
- the deformation of the touch panel 120 will squeeze the first piezoelectric element 130 and/or the second piezoelectric element 140,
- the change of the circuit voltage caused by the deformation of the electrical element can be used to deduct the magnitude of the deformation, and then determine the magnitude of the pressure on the touch panel 120.
- the vibration module 10 is not provided with a second piezoelectric element 140, but only a first piezoelectric element is provided between the touch panel 120 and the base 110 130.
- the touch panel 120 is driven only by the first piezoelectric element 130.
- the vibration module 10 further includes a support 150, the support 150 is disposed between the touch panel 120 and the base 110, and the support 150 and the first piezoelectric element 130 are spaced apart.
- One side of the support 150 abuts and contacts the bottom of the control board 120, and the opposite side is fixedly connected to the base 110.
- the support 150 When it is described that the support 150 is in contact with the control panel 120, that is, the support 150 is in contact with the touch panel 120, but is not fixedly connected. At this time, the touch panel 120 can still move relative to the support 150. As described above, the support 150 can support the touch panel 120 to prevent the touch panel 120 from being deformed greatly due to being pressed, and at the same time, it does not limit the lateral vibration of the touch panel 120.
- the number of the support 150 may be one or more (for example, one, two, three or more).
- the first piezoelectric element 130 when the first piezoelectric element 130 can also contact the control panel 120 and the base 110, the first piezoelectric element 130 can support the touch panel 120 together with the support 150 to prevent the touch panel 120 from being damaged. Depressed and deformed by pressing.
- the support 150 when the first piezoelectric element 130 and the second piezoelectric element 140 are provided at the same time, the support 150 can also be provided between the touch panel 120 and the base 110.
- the touch panel 120 includes touch traces, and the touch traces are used to detect operations such as a user's finger swiping on the touch panel 120, so as to obtain the user's swiping information.
- the first axis 1301 and the second axis 1401 in the above embodiments are all examples that are parallel to the touch surface 121.
- the first axis 1301 can also be designed to be inclined to the touch surface 121, that is, form an inclined angle with the touch surface 121, for example, the inclined angle is within 20°.
- the inclined design of the first axis 1301 enables the touchpad 120 to have vibration components in both the horizontal (parallel to the touch surface 121) and the vertical (perpendicular to the touch surface 121), thereby enriching the vibration modes of the module and making it vibrate The feedback is more obvious.
- the second axis 1401 can also be designed to be inclined to the touch surface 121, that is, form an inclined angle with the touch surface 121, for example, the inclined angle is within 20° .
- the electronic device 20 includes a housing 210 and a vibration module 10.
- the vibration module 10 is disposed on the housing 210.
- the housing 210 may be The housing or internal bracket of the electronic device 20.
- the electronic device 20 may be, but is not limited to, an electronic device with a touch surface 121 board, such as a notebook computer, a portable external touch pad, and the like.
- the housing 210 of the electronic device 20 is misaligned with the touch panel 120 in the lateral direction or there is a gap, so as to prevent the housing 210 from obstructing the lateral vibration of the touch panel 120.
- the touchpad 120 in the vibration module 10 can vibrate evenly in the lateral direction, when the user is using the electronic device 20 provided with the vibration module 10, the user can obtain uniform vibrations in each area of the touchpad 120. Vibration feedback.
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Abstract
一种振动模组（10）及电子装置（20）。振动模组（10）包括：基座（110）；触控板（120），包括触控面（121），触控面（121）位于触控板（120）远离基座（110）的一侧；以及第一压电元件（130），设于基座（110）与触控板（120）之间，第一压电元件（130）连接触控板（120）与基座（110），第一压电元件（130）具有第一轴线（1301），第一压电元件（130）能够在电场作用下沿第一轴线（1301）的方向伸缩，以驱动触控板（120）振动。
Description
相关申请的交叉引用
本申请要求于2020年4月9日提交中国专利局、申请号为202020505507.3、发明名称为“振动模组及电子装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请涉及触觉反馈领域，特别是涉及一种振动模组及电子装置。
在一般设置有触控板的电子装置中(如笔记本电脑)，为了降低装置的整体厚度，从而逐步取消了触控板上的实体按键，取而代之的是利用线性马达或压电马达作用触控板来达到与按压实体按键类似的振动反馈功能，使用户体验到按压振动的感觉。在一般设计中，与线性马达不同的是，压电马达只能通过模态的调整以在触控板的局部产生较强的振动，而很难使整个触控板均匀振动。
发明内容
在本申请的第一方面，提供了一种振动模组，包括：
基座；
触控板，包括触控面，所述触控面位于所述触控板远离所述基座的一侧；以及
第一压电元件，设于所述基座与所述触控板之间，所述第一压电元件连接所述触控板与所述基座，并且所述第一压电元件具有第一轴线，所述第一压电元件能够在电场作用下沿所述第一轴线的方向伸缩，以驱动所述触控板振动。
对于沿所述触控板的厚度方向振动的方式而言，触控板一般只在与驱动件(如线性马达或压电马达)接触的区域存在较强的纵向(沿所述触控板的厚度方向)振动，而越远离接触区域的位置则振动越弱，从而导致触控板的振动不均匀，导致无法在所述触控板的各区域均体现与按压实体按键类似的效果。而在上述振动模组中，所述第一压电元件分别连接所述触控板和所述基座，且所 述第一压电元件的所述第一轴线平行或倾斜于所述触控面。所述第一压电元件在受到相应的电场作用后，能够沿平行于所述第一轴线的方向伸缩，通过控制电场的大小便可带动所述触控板于横向(平行于所述触控面的方向)振动。特别地，在横向振动的模式下，所述触控板整体振动均匀，避免所述触控板于各区域的振动强度不一致的问题，从而在所述触控板的各区域均能良好地体现与按压实体按键类似的效果。
在本申请的第二方面，提供了一种电子装置，包括根本申请的第一方面所述的振动模组，所述振动模组设置于所述壳体。
由于上述振动模组中的所述触控板能够在横向上均匀振动，从而当用户在使用设置有上述振动模组的所述电子装置时，用户在所述触控板的各区域均能得到均匀的振动反馈。
为了更好地描述和说明本申请的实施例，可参考一幅或多幅附图，但用于描述附图的附加细节或示例不应当被认为是对本申请的发明创造、目前所描述的实施例或优选方式中任何一者的范围的限制。
图1为根据本申请的一实施例的振动模组的侧视结构图；
图2为根据本申请的一实施例的振动模组的俯视结构图；
图3为根据本申请的一实施例的振动模组的结构示意图；
图4为根据本申请的一实施例的振动模组的结构示意图；
图5为根据本申请的一实施例的采用振动模组的电子装置的示意图；
图6为根据本申请的一实施例的电子装置的壳体与振动模组的位置示意图。
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的首选实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使本申请的公开内容更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个原件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个原件，它可以是直接连接到另一个元件或者可能同时存在居中元件。相反，当元 件被称作“直接在”另一原件“上”时，不存在中间元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
在一般设置有触控板的电子装置中(如笔记本电脑)，为了降低装置的整体厚度，从而逐步取消了触控板上的实体按键，取而代之的是利用线性马达或压电马达作用触控板来达到与按压实体按键类似的振动反馈功能，使用户体验到按压振动的感觉。在一般设计中，与线性马达不同的是，压电马达只能通过模态的调整以在触控板的局部产生较强的振动，而很难使整个触控板均匀振动。
具体地，对于沿所述触控板的厚度方向振动的方式而言，触控板一般只在与驱动件(如线性马达或压电马达)接触的区域存在较强的纵向(沿所述触控板的厚度方向)振动，而越远离接触区域的位置则振动越弱，从而导致触控板的振动不均匀，导致无法在所述触控板的各区域均体现与按压实体按键类似的效果。为此，本申请的一些实施例提供一种振动模组以解决触控板振动不均匀的问题。
参考图1和图2，在本申请的一个实施例中，振动模组10包括基座110、触控板120、第一压电元件130及第二压电元件140，触控板120与基座110间隔设置，第一压电元件130与第二压电元件140间隔设置且两者均设置于触控板120与基座110之间，第一压电元件130和第二压电元件140的位置关于触控面121的中心法线存在对称关系。触控板120包括触控面121，触控面121为平面，触控面121位于触控板120远离基座110的一侧。在应用振动模组10的一个实施例中，当用户的手指按压触控面121的力度达到一定值时，第一压电元件130和第二压电元件140能够在电场作用下发生逆压电效应而发生伸缩，以此驱动触控板120在横向上细微振动，通过将振动反馈给用户的手指，以使用户感受到与按压实体按键类似的振动反馈。
具体地，第一压电元件130呈条状结构，呈条状结构的第一压电元件130拥有第一轴线1301，第一轴线1301即该条状结构的最长的中心轴，第一轴线1301平行于触控面121；第二压电元件140同样呈条状结构，呈条状结构的第二压电元件140拥有第二轴线1401，第二轴线1401即该条状结构的最长的中心 轴，第二轴线1401平行于触控面121。第二轴线1401与第一轴线1301共线。第一压电元件130和第二压电元件140均为压电陶瓷。呈条状结构的第一压电元件130和第二压电元件140在电场作用下能够沿第一轴线1301更有效地伸缩，从而增加触控板120的振动效果。在该实施例中，呈条状结构的第一压电元件130和第二压电元件140能够在电场作用下做k31模式伸缩，即沿平行于第一轴线1301的方向伸缩。需注意的是，对于以上所描述的平行，由于实际制程工艺的影响，当两者存在轻微的倾斜(如±5°)时也可认为是属于本申请的“平行”范畴。
第一压电元件130在沿第一轴线1301的方向的两端分别为第一末端131和第二末端132，第一压电元件130的第一末端131连接于触控板120朝向基座110的一侧(即连接于触控板120的底部)，而第二末端132连接于基座110；第二压电元件140在沿第二轴线1401的方向的两端分别为第三末端141和第四末端142。第一压电元件130的第一末端131固定连接于触控板120朝向基座110的一侧(即连接于触控板120的底部)，而第二末端132固定连接于基座110。第二压电元件140的第三末端141固定连接于触控板120朝向基座110的一侧(即连接于触控板120的底部)，而第四末端142固定连接于基座110。由于一些装置中的触控板120与外壳表面处于或近似处于同一平面，因此上述设计能够避免第一压电元件130和第二压电元件140由于连接在触控板120的侧边缘，而导致触控板120与外壳表面之间要形成较大的高度差以形成容置第一压电元件130的空间。同理地，该实施例中的第二压电元件140的设置方式与第一压电元件130相同，因此也具有相同的效果，此处不加以赘述。
另外，由于上述实施例中的第一压电元件130的相对的两个端部分别连接基座110和触控板120，从而可以充分利用第一压电元件130的伸缩量，使第一压电元件130的伸缩运动能够高效转化为触控板120的振动，以增大触控板120的振动幅度。相应地，与基座110和触控板120具有相似连接关系的第二压电元件140也具有上述效果，此处不加以赘述。
在固定连接方面，在一些实施例中，第一压电元件130于第一末端131的一侧通过设置连接件101以固定于触控板120的底部，于第二末端132的一侧通过设置连接件101以固定于基座110，设于第一末端131和第二末端132的连接件101分别位于第一压电元件130的相背的两侧。同样地，第二压电元件140于第三末端141的一侧通过设置连接件101以固定于触控板120的底部，于第 四末端142的一侧通过设置连接件101以固定于基座110，设于第三末端141和第四末端142的连接件101分别位于第二压电元件140的相背的两侧。
其中，各连接件101为胶水或粘性泡棉，且各连接件101在垂直于触控面121的方向上的厚度小于1mm(图示中的结构尺寸仅为示例)。从而，在第一压电元件130靠近触控板120的一侧，除了连接件101的位置外，该侧还存在与触控板120的底部抵接或几乎抵接的区域；同样地，在第二压电元件140靠近触控板120的一侧，除了连接件101的位置外，该侧还存在与触控板120的底部抵接或几乎抵接的区域。
以上，在上述实施例中，振动模组10包括抵接部，抵接部位于基座110与触控板120之间，抵接部于靠近基座110的一侧与基座110抵接(图1中未示出抵接关系)，于靠近触控板120的一侧与触控板120抵接(图1中未示出抵接关系)。抵接部可以为第一压电元件130及/或第二压电元件140中的部分结构。具体地，在其中一个实施例中，在第一压电元件130靠近触控板120的一侧，除了与触控板120固定连接的区域外，第一压电元件130于该侧的其他区域与触控板120的底部抵接；在第一压电元件130靠近基座110的一侧，除了与基座110固定连接的区域外，第一压电元件130于该侧的其他区域与基座110抵接。这些抵接区域对应的第一压电元件130的结构即作为振动模组10的抵接部。相似地，在其中一个实施例中，在第二压电元件140靠近触控板120的一侧，除了与触控板120固定连接的区域外，第二压电元件140于该侧的其他区域与触控板120的底部抵接；在第二压电元件140靠近基座110的一侧，除了与基座110固定连接的区域外，第二压电元件140于该侧的其他区域与基座110抵接。这些抵接区域对应的第二压电元件140的结构即作为振动模组10的抵接部。上述抵接结构能够起到支撑触控板120的作用，有利于防止触控板120在被按压时发生形变。
需要注意的是，在抵接的区域，第一压电元件130和第二压电元件140与触控板120仅是相抵，而非固定连接，因此任意两个相抵元件于相抵区域之间能够相对移动，从而不会阻碍第一压电元件130和第二压电元件140的伸缩运动。同样地，第一压电元件130和第二压电元件140在靠近基座110的一侧，除了设置连接件101以连接基座110的区域外，其他区域与基座110抵接。上述设计通过第一压电元件130和第二压电元件140抵接触控板120的底部，从而起到支撑触控板120的作用，有利于防止触控板120在被按压时发生形变。
另外，一些实施例中的连接件101并不限于胶水及粘性泡棉，连接件101也可以为其他粘性材料。在一些实施例中，第一压电元件130和第二压电元件140也可通过焊接、螺纹连接等方式与触控板120及基座110连接。
对于连接件101的材质而言，在一些实施例中，通过胶水固化、焊接等固定连接的方式，能够使第一压电元件130和第二压电元件140固定连接于基座110和触控板120，但此时的第一轴线1301和第二轴线1401应平行设计，防止第一压电元件130和第二压电元件140由于伸缩方向不同而导致连接处发生断裂。但在另一些实施例中，当连接件101为泡棉等具有弹性的材料时，第一压电元件130和第二压电元件140能够通过连接件101与触控板120弹性连接，从而使两者均能够相对触控板120转动细微的角度，而不会轻易破坏连接件101，在这种设计下，第一轴线1301能够倾斜甚至垂直于第二轴线1401设计，从而使触控板120能够实现在更多方向上的振动，提高横向振动的灵活性。
且需要注意的是，一些实施例中的第一压电元件130无需分别在两个端部连接触控板120及基座110。例如，在一些实施例中，第一压电元件130也可以在沿第一轴线1301方向的中间区域连接触控板120和基座110中的一个，而在端部连接触控板120和基座110中的另一个，只要使第一压电元件130连接基座110及连接触控板120的区域在第一轴线1301的方向上存在间隔即可。同样地，一些实施例中的第二压电元件140也无需分别在两个端部连接触控板120及基座110，第二压电元件140也可以在沿第二轴线1401方向的中间区域连接触控板120和基座110中的一个，而在端部连接触控板120和基座110中的另一个，只要使第二压电元件140连接基座110及连接触控板120的区域在第二轴线1401的方向上存在间隔即可。
由于第一压电元件130的两端分别连接触控板120和基座110，且第二压电元件140的两端分别连接触控板120和基座110，此时通过使第一压电元件130和第二压电元件140在逆压电效应下沿第一轴线1301的方向做伸缩形变，使两者的伸缩量保持同步，从而可带动触控板120沿该方向做横向移动，且此时触控板120的横向位移量即相当于第一压电元件130和第二压电元件140中其中一个的伸缩量。进一步地，由于逆压电效应的存在，通过控制作用于第一压电元件130和第二压电元件140中的电场频率，即能够实现两者以相同的频率做伸缩运动，进而带动触控板120做相同频率的横向振动。
在该实施例中，由于第一压电元件130和第二压电元件140均与触控板120 连接，且两者均能够沿相同方向驱动触控板120，为了防止因两者的伸缩方向相反或伸缩量不同而导致两者对触控板120的作用不同步，导致两者中与触控板120的连接强度较弱的一个发生脱落(例如连接处断裂)，因此本实施例中的第一压电元件130和第二压电元件140在工作过程中应保持同步的伸缩方向及伸缩量，具体可通过控制第一压电元件130和第二压电元件140的材料、尺寸、作用电场的频率等参数，以实现触控板120与第一压电元件130、第二压电元件140的同步伸缩。
在上述实施例中，第一压电元件130和第二压电元件140在受到相应的电场作用后，能够沿平行于第一轴线1301的方向伸缩，通过控制电场的大小便可驱动触控板120于横向(平行于触控面121的方向)振动。特别地，在横向振动的模式下，触控板120整体振动均匀，可避免触控板120于各区域的振动强度不一致的问题，从而在触控板120的各区域均能良好地体现出与按压实体按键类似的效果。
除了长轴共线设置的方式外，在一些实施例中，第一压电元件130的第一轴线1301与第二压电元件140的第二轴线1401也可以以不共线的方式设置，只要两者保持平行即可。一些实施例中的第一压电元件130和第二压电元件140的结构并不限于条状结构，一些实施例中的第一压电元件130和第二压电元件140的结构呈板状结构。且一些实施例中的第一压电元件130和第二压电元件140的数量并不限于一个，第一压电元件130数量可以为两个、三个或更多个，第二压电元件140的数量也可以为两个、三个或更多个，且第一压电元件130和第二压电元件140的数量可以相同，也可以不同，多个压电元件能够提供更大的驱动力以使触控板120振动。但优选地，第一压电元件130和第二压电元件140于振动模组10中的设置位置应具有对称结构。
另外，第一压电元件130和第二元件在触控板120与基座110之间的设置位置包括并不限于上述实施例。例如，在第一压电元件130和第二压电元件140与触控板120连接以能够实现驱动的前提下，第一轴线1301和第二轴线1401可以沿任意方向。但特别地，当触控板120为矩形面板时，第一轴线1301和第二轴线1401应平行于触控板120的长边或短边，从而使触控板120能够沿长边或短边方向振动。
在图1所示实施例的结构中，在垂直触控面121的方向上，第一压电元件130和第二压电元件140的投影与触控板120的投影仅部分重叠，即部分第一压 电元件130和部分第二压电元件140伸出了触控板120与基座110之间的空间，只要有部分元件的结构存在于触控板120与基座110之间，便可称该元件设于两者之间。当然，在一些实施例中，在垂直触控面121的方向上，第一压电元件130和第二压电元件140的投影完全处于触控板120的投影内，即第一压电元件130和第二压电元件140完全位于触控板120与基座110之间的空间，从而有利于减小振动模组10于横向上的尺寸。
需要注意的是，在一些实施例中，第一压电元件130和第二压电元件140可以整体为压电陶瓷。而在另一些实施例中，第一压电元件130和第二压电元件140仅在中间区域设有压电陶瓷，而两端的结构并非压电陶瓷，两端的结构可以为塑料或橡胶，而第一压电元件130和第二压电元件140上的连接件101设置于非压电陶瓷区域。
参考图3，在一些实施例中，振动模组10包括第一正电极133、第一负电极134、第二正电极143和第二负电极144。在垂直于第一轴线1301的方向上，第一正电极133和第一负电极134分别设置于第一压电元件130的相背两侧，第二正电极143和第二负电极144分别设置于第二压电元件140的相背两侧。具体地，在图3所示的实施例中，第一正电极133设于第一压电元件130靠近触控板120的一侧，第一负电极134设于第一压电元件130靠近基座110的一侧；第二正电极143设于第二压电元件140靠近触控板120的一侧，第二负电极144设于第二压电元件140靠近基座110的一侧。第一正电极133和第一负电极134能够为通过化学镀膜、真空镀膜等方式设于第一压电元件130上的镀层；第二正电极143和第二负电极144能够为通过化学镀膜、真空镀膜等方式设于第二压电元件140上的镀层。当然，除了可以为镀层外，第一正电极133与第一负电极134、第二正电极143与第二负电极144可以为能够产生电场的其他元件。在这些实施例中，第一正电极133与第一负电极134之间以及第二正电极143与第二负电极144之间均能够形成电场，通过调节施加在各电极上的电压，以控制电极之间形成的电场强度，从而控制第一压电元件130和第二压电元件140的伸缩量，进而控制触控板120在横向上振动。
继续参考图3，在一些实施例中，振动模组10还包括压力传感器160，压力传感器160设置于触控板120朝向基座110的一侧，压力传感器160用于检测触控板120所受到的压力大小。通过设置压力传感器160以检测触控板120所受到的压力大小，从而能够通过系统终端以判断是否需要对第一压电元件130 和第二压电元件140施加电场以驱动触控板120振动。另外，在一些实施例中，当第一压电元件130及/或第二压电元件140与触控板120的底部抵接时，第一压电元件130及/或第二压电元件140自身能够作为振动模组10的压力传感器，例如当触控板120受到按压时，触控板120的形变将会挤压第一压电元件130及/或第二压电元件140，通过对压电元件的形变所产生的电路电压的改变，以此推得形变量的大小，进而判断触控板120所受压力的大小。
参考图4，并结合图1，在一些实施例中，振动模组10并未设置第二压电元件140，而只在触控板120与基座110之间设置有一个第一压电元件130，触控板120仅由该第一压电元件130驱动。同时，在该实施例中，振动模组10还包括支撑件150，支撑件150设置于触控板120与基座110之间，且支撑件150与第一压电元件130间隔设置。支撑件150的一侧抵接触控板120的底部，相背的另一侧固定连接于基座110。当描述支撑件150抵接触控板120时，即支撑件150与触控板120存在接触，但并非固定连接，此时触控板120任然能够相对支撑件150运动。以上，通过设置支撑件150能够对触控板120起到支撑作用，以防止触控板120因被按压而发生较大的变形，同时也不会限制触控板120的横向振动。支撑件150的数量可以为一个或多个(例如，为一个、两个、三个或更多个)。
在一些实施例中，当第一压电元件130同样能够抵接触控板120和基座110时，第一压电元件130能够和支撑件150一同支撑触控板120，防止触控板120因按压而发生下凹变形。当然，在一些实施例中，当同时设置有第一压电元件130和第二压电元件140时，触控板120与基座110之间也能设置支撑件150。
在一些实施例中，触控板120包括触控走线，触控走线用于检测用户于触控板120上的手指划动等操作，以此获取用户的划动信息。
以上各实施例中的第一轴线1301及第二轴线1401均为平行于触控面121的示例。但在另一些实施例中，第一轴线1301也能够倾斜于触控面121设计，即与触控面121形成一倾斜夹角，例如倾斜夹角在20°以内。第一轴线1301的倾斜设计能够使触控板120在横向(平行于触控面121)和纵向(垂直于触控面121)的方向均有振动分量，从而丰富模组的振动方式，使振动反馈更为明显。在一些实施例中，当存在第二压电元件140时，第二轴线1401也可倾斜于触控面121设计，即与触控面121形成一倾斜夹角，例如倾斜夹角在20°以内。
参考图5和图6，本申请的一些实施例还提供了一种电子装置20，电子装 置20包括壳体210及振动模组10，振动模组10设置于壳体210，壳体210可以为电子装置20的外壳或内部支架。电子装置20可以为但不限于笔记本电脑、便携式外接触控板等带有触控面121板的电子装置。
需要注意的是，在一些实施例中，电子装置20的壳体210在横向上与触控板120保持错位或存在缝隙，以防止壳体210阻碍触控板120的横向振动。
由于上述振动模组10中的触控板120能够在横向上均匀振动，从而当用户在使用设置有上述振动模组10的电子装置20时，用户在触控板120的各区域均能得到均匀的振动反馈。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。
Claims (15)
- 一种振动模组，包括：基座；触控板，包括触控面，所述触控面位于所述触控板远离所述基座的一侧；以及第一压电元件，设于所述基座与所述触控板之间，所述第一压电元件连接所述触控板与所述基座，并且所述第一压电元件具有第一轴线，所述第一压电元件能够在电场作用下沿所述第一轴线的方向伸缩，以驱动所述触控板振动。
- 根据权利要求1所述的振动模组，其中，所述第一轴线平行于所述触控面。
- 根据权利要求1所述的振动模组，其中，所述第一轴线倾斜于所述触控面，且所述第一轴线与所述触控面之间的倾斜夹角在20°以内。
- 根据权利要求1所述的振动模组，其中，所述第一压电元件在沿所述第一轴线的方向的一端连接所述触控板，并在沿所述第一轴线的方向的另一端连接所述基座。
- 根据权利要求1所述的振动模组，其中，还包括第一正电极和第一负电极，在垂直于所述第一轴线的方向上，所述第一正电极和所述第一负电极中的一个设置于所述第一压电元件的一侧，另一个设置于所述第一压电元件的相背的另一侧。
- 根据权利要求1所述的振动模组，其中，还包括一个或多个支撑件，所述支撑件设置于所述触控板与所述基座之间，所述支撑件的一侧抵接所述触控板，相背的另一侧固定连接所述基座。
- 根据权利要求1所述的振动模组，其中，还包括第二压电元件，所述第二压电元件设于所述基座与所述触控板之间，并与所述第一压电元件间隔设置，所述第二压电元件具有第二轴线，所述第二压电元件连接所述触控板与所述基座，所述第二压电元件能够在电场作用下沿所述第二轴线的方向伸缩，以驱动所述触控板振动。
- 根据权利要求7所述的振动模组，其中，所述第二轴线平行于所述触控 面。
- 根据权利要求7所述的振动模组，其中，所述第二轴线倾斜于所述触控面，且所述第二轴线与所述触控面之间的倾斜夹角在20°以内。
- 根据权利要求7所述的振动模组，其中，所述第一轴线平行于所述第二轴线。
- 根据权利要求7所述的振动模组，其中，所述第一压电元件和所述第二压电元件中的至少一个与所述触控板弹性连接，所述第一轴线倾斜或垂直于所述第二轴线。
- 根据权利要求1或7所述的振动模组，其中，还包括抵接部，所述抵接部位于所述触控板与所述基座之间，所述抵接部在靠近所述触控板的一侧与所述触控板抵接，并在靠近所述基座的一侧与所述基座抵接。
- 根据权利要求1所述的振动模组，其中，所述第一压电元件呈条状结构。
- 根据权利要求1所述的振动模组，其中，还包括压力传感器，所述压力传感器设于所述基座与所述触控板之间，所述压力传感器用于检测所述触控板所受到的压力大小。
- 一种电子装置，包括壳体及根据权利要求1至14中的任一项所述的振动模组，所述振动模组设置于所述壳体。
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| CN201654740U (zh) * | 2010-02-01 | 2010-11-24 | 瑞声光电科技(常州)有限公司 | 触控反馈装置 |
| JP2011175519A (ja) * | 2010-02-25 | 2011-09-08 | Kyocera Corp | タッチパネル装置 |
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