CN111813221A - Touch feedback module and electronic equipment - Google Patents
Touch feedback module and electronic equipment Download PDFInfo
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- CN111813221A CN111813221A CN202010652105.0A CN202010652105A CN111813221A CN 111813221 A CN111813221 A CN 111813221A CN 202010652105 A CN202010652105 A CN 202010652105A CN 111813221 A CN111813221 A CN 111813221A
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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
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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Abstract
The invention relates to a touch feedback module and electronic equipment, wherein the touch feedback module comprises a pressing unit, a first elastic sheet, a piezoelectric unit and an elastic support, the pressing unit and the piezoelectric unit are respectively arranged at two opposite sides of the first elastic sheet, the pressing unit is fixedly connected with the middle area of the first elastic sheet, the piezoelectric unit is fixedly connected with two ends of the first elastic sheet, a gap is formed between the surface of the first elastic sheet adjacent to the piezoelectric unit and the piezoelectric unit except the two ends connected with the piezoelectric unit, one part of the elastic support is connected with one side of the piezoelectric unit, which is far away from the first elastic sheet, and the other part of the elastic support is connected with a fixed-position user to press the pressing unit; the functions of starting up, shutting down, pressure sensing and touch feedback can be realized, the functions are relatively more, the pursuit of a user for realizing more functions in the same operation is met, and the human-computer interaction experience is better; and the assembly tolerance can be absorbed, the assembly requirement of the touch feedback module is reduced, the design of the whole machine is simplified, and the yield of products is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a touch feedback module and electronic equipment.
Background
With the improvement of the information security protection consciousness of people, more and more display devices adopt a fingerprint identification technology, and in order to pursue a better visual effect, the screen proportion of the display devices is larger and larger, and a comprehensive screen is generated.
At present, fingerprint identification and switch function key integration are in the same place, and set up the side at display device along with the switch function key, at this moment, display device has two kinds of structural style, mode one, the fingerprint identification unit, the metal dome piece, switch button circuit board range upon range of on the center, mode two, the fingerprint identification unit, the metal dome piece sets up on same circuit board, and fix the metal dome piece on the center after the book is rolled over, but these two kinds of structural style's display device only include fingerprint identification function and switch function, the function is single relatively, can not satisfy the pursuit that the user realizes more functions to same operation, human-computer interaction experience is relatively poor, and the vibrations of metal dome piece need be realized through solitary linear motor module, lead to the equipment requirement higher, cause the complete machine design comparatively complicated, the product yield is lower.
Disclosure of Invention
Therefore, it is necessary to provide a touch feedback module and an electronic device for solving the problems of single function and poor human-computer interaction experience.
A touch feedback module comprises a pressing unit, a first elastic sheet, a piezoelectric unit and an elastic support, wherein the pressing unit and the piezoelectric unit are respectively arranged on two opposite sides of the first elastic sheet, the pressing unit is fixedly connected with the middle area of the first elastic sheet, the piezoelectric unit is fixedly connected with two ends of the first elastic sheet, and a gap is formed between the surface, adjacent to the piezoelectric unit, of the first elastic sheet and the piezoelectric unit except the two ends connected with the piezoelectric unit; one part of the elastic support is connected to one side of the piezoelectric unit, which is far away from the first elastic sheet, and the other part of the elastic support is connected to a fixed position.
According to the touch control feedback module, a user presses the pressing unit, and the pressing force is transmitted to the first elastic sheet due to the fact that the pressing unit is fixedly connected with the middle area of the first elastic sheet, the first elastic sheet is extended and deformed along the stacking direction perpendicular to the pressing unit and the first elastic sheet, the piezoelectric unit is driven to extend, voltage output is generated through the positive piezoelectric effect, and the functions of starting, shutting down and pressure sensing are achieved through different threshold values of output voltage correspondingly. At the moment, the piezoelectric unit receives the voltage signal, and the piezoelectric unit is driven to contract and deform along the stacking direction perpendicular to the pressing unit and the first elastic sheet by the action of force generated by the inverse piezoelectric effect, so that the first elastic sheet is driven to contract along the stacking direction of the pressing unit and the first elastic sheet, and vibration is transmitted to the pressing unit through the first elastic sheet, so that the pressing unit can generate displacement along the stacking direction of the pressing unit and the first elastic sheet to realize touch feedback, therefore, the touch feedback module can realize the functions of starting up, closing down, pressure sensing and touch feedback, has relatively more functions, meets the pursuit of a user for realizing more functions in the same operation, and has better human-computer interaction experience; and fix the touch-control feedback module on the fixed position through the elastic support to can absorb the assembly tolerance, reduce the assembly requirement of touch-control feedback module, and then simplify the complete machine design, and improve the product yield.
In one embodiment, the elastic support comprises a functional region, the functional region is fixedly connected with two ends of the piezoelectric unit, which are connected with the first elastic sheet, and a gap is formed between the surface, adjacent to the piezoelectric unit, of the functional region except the surface connected with the piezoelectric unit and the piezoelectric unit.
According to the touch control feedback module, the function area in the elastic support is limited to be fixedly connected with the two ends, connected with the first elastic sheets, of the piezoelectric units, so that the elastic support is fixedly connected with the piezoelectric units, a gap is reserved between the surface, adjacent to the piezoelectric units, of the function area except the surface connected with the piezoelectric units and the piezoelectric units, and the elastic support is prevented from being in direct contact with the piezoelectric units, so that the piezoelectric units are protected.
In one embodiment, the elastic support further comprises a connecting area which is arranged around the outer side of the functional area and is fixed at the fixing position.
Above-mentioned touch-control feedback module still includes the joining region that encircles the setting in the functional area outside through injecing the elastic support to realize being connected of elastic support and fixed position.
In one embodiment, the gap between the functional region and the piezoelectric unit is gradually increased from both ends of the piezoelectric unit toward the middle, and the middle region of the functional region is fixedly connected to the fixing position.
Above-mentioned touch-control feedback module is through the middle zone and the fixed position fixed connection of injecing the functional area to realize being connected of elastic support and fixed position.
In one embodiment, the elastic support includes two elastic single bodies arranged at intervals in a direction perpendicular to the stacking direction of the first elastic sheet and the piezoelectric unit, and the two elastic single bodies are arranged oppositely and respectively connected with the end part of the piezoelectric unit connected with the first elastic sheet and the fixing position.
Above-mentioned touch-control feedback module is two elasticity monomers that the interval set up through the structural style of injecing the elastic support to realize being connected of elastic support and piezoelectric unit and fixed position.
In one embodiment, the elastic support is connected to the piezoelectric unit through a second elastic sheet, a middle area of the second elastic sheet is connected to the elastic support, two ends of the second elastic sheet are fixedly connected with two ends of the piezoelectric unit, which are connected with the first elastic sheet, and a gap is formed between the surface, adjacent to the piezoelectric unit, of the second elastic sheet and the piezoelectric unit except the two ends connected with the piezoelectric unit.
Above-mentioned touch-control feedback module can realize the indirect connection of elastic support and piezoelectric unit through setting up the second shell fragment to have the clearance through injecing between second shell fragment and the piezoelectric unit, in order to avoid elastic support and piezoelectric unit direct contact, thereby protection piezoelectric unit.
In one embodiment, the pressing unit includes a fingerprint identification unit and a first rigid support, and the first rigid support is a plate-shaped structure, is disposed between the fingerprint identification unit and the middle area of the first elastic sheet, and is respectively connected to the fingerprint identification unit and the middle area of the first elastic sheet.
Above-mentioned touch-control feedback module presses the unit to include fingerprint identification unit and first rigid support through injecing to integrated fingerprint identification function, and first rigid support can improve the support intensity to the fingerprint identification unit, guarantee overall structure's stability.
In one embodiment, the touch feedback module further includes a second rigid support, wherein:
the second elastic sheet, the piezoelectric unit and two ends of the first elastic sheet are sequentially stacked in the second rigid support, the second rigid support is provided with an opening corresponding to the middle area of the first elastic sheet, the middle area of the first elastic sheet protrudes out of the opening, a gap is formed between the surface, adjacent to the second rigid support, of the side end face of the first elastic sheet along the stacking direction and the second rigid support, and the middle area of the second elastic sheet is fixedly connected with the elastic support through the end, away from the opening, of the second rigid support;
along the stacking direction of the fingerprint identification unit and the first rigid support, the height of one side, deviating from the piezoelectric unit, of the first elastic sheet is larger than the height between the second rigidities.
In above-mentioned touch-control feedback module, through setting up the second rigid support to spacing fingerprint identification unit, first rigid support, first shell fragment and piezoelectric unit avoid touch-control feedback module to appear comparatively obvious when pressing down and move down the sense, in order to improve user experience, and can avoid piezoelectric unit along the perpendicular to press down the unit and when the range upon range of direction deformation of first shell fragment with the elastic support between the mutual friction, in order to protect piezoelectric unit, improve the product yield.
In one embodiment, the first rigid support comprises a supporting plate and an annular baffle, the annular baffle is arranged on one side of the supporting plate, which is far away from the fingerprint identification unit, the first elastic sheet and the fingerprint identification unit are respectively arranged on two sides of the supporting plate, the second rigid support is arranged in the annular baffle, and a gap is formed between the surface, adjacent to the annular baffle, of the second rigid support and the annular baffle along a stacking direction perpendicular to the fingerprint identification unit and the first rigid support.
In above-mentioned touch-control feedback module, include backup pad and cyclic annular baffle through injecing first rigid support to reduce touch-control feedback module's the range of rocking, improve user experience.
In addition, the invention also provides electronic equipment which comprises a middle frame and the touch feedback module according to any one of the technical schemes, wherein the touch feedback module is arranged on the middle frame.
In the electronic equipment, the touch feedback module can realize the functions of starting up, shutting down, pressure sensing and touch feedback, has relatively more functions, meets the pursuit of a user for realizing more functions for the same operation, and has better human-computer interaction experience; and fix the touch-control feedback module on the fixed position through the elastic support to can absorb the assembly tolerance, reduce the assembly requirement of touch-control feedback module, and then simplify the complete machine design, and improve the product yield. Therefore, the electronic equipment with the touch feedback module has more functions, lower assembly requirements and higher product yield.
In one embodiment, when the touch feedback module has the first rigid support, the middle frame is provided with a window, the pressing unit group of the touch feedback module is embedded in the window of the middle frame, and the first rigid support is arranged inside the middle frame; the elastic support is arranged in the middle frame, and the fixed position is the end part arranged in the middle frame and spaced from the windowing part.
In the electronic equipment, the touch feedback module is embedded in the window of the middle frame, so that the overall thickness is reduced, and the light and thin structure is convenient to realize.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device provided in the present invention;
FIG. 2 is a schematic structural diagram of another electronic device provided in the present invention;
FIG. 3 is a schematic structural diagram of another electronic device provided in the present invention;
fig. 4 is a schematic structural diagram of another electronic device provided in the present invention;
FIG. 5 is a schematic structural diagram of another electronic device provided in the present invention;
FIG. 6 is a schematic structural diagram of another electronic device provided in the present invention;
fig. 7 is a schematic structural diagram of another electronic device provided in the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
As shown in fig. 1, the present invention provides a touch feedback module 100, which includes a pressing unit 110, a first elastic sheet 120, a piezoelectric unit 130, and an elastic support 140, wherein the pressing unit 110 and the piezoelectric unit 130 are respectively disposed at two opposite sides of the first elastic sheet 120, and a middle region of the pressing unit 110 and a middle region of the first elastic sheet 120 are fixedly connected by a fixing adhesive, a double-sided adhesive, or the like, two ends of the piezoelectric unit 130 and the first elastic sheet 120 are fixedly connected by a fixing adhesive, a double-sided adhesive, or the like, and a gap is formed between a surface of the first elastic sheet 120 adjacent to the piezoelectric unit 130 except the two ends and the piezoelectric unit 130, so that the surface of the first elastic sheet 120 adjacent to the piezoelectric unit 130 except the two ends connected to the piezoelectric unit 130 is spaced from the piezoelectric unit 130 to form a deformation space of the first elastic sheet 120; a portion of the elastic bracket 140 is connected to a side of the piezoelectric unit 130 facing away from the first resilient sheet 120, and another portion of the elastic bracket 140 is connected to the fixing position 200, so that the elastic bracket 140 can play a role of buffering for absorbing assembly tolerance.
In the touch feedback module 100, a user presses the pressing unit 110, and since the pressing unit 110 is fixedly connected to the middle region of the first elastic sheet 120, the pressing force is transmitted to the first elastic sheet 120, so that the first elastic sheet 120 is elongated and deformed along the direction perpendicular to the stacking direction of the pressing unit 110 and the first elastic sheet 120, and further the piezoelectric unit 130 is driven to be elongated and generate voltage output through a positive piezoelectric effect, and the functions of starting up, shutting down and pressure sensing are realized through different thresholds of the output voltage. At this time, the piezoelectric unit 130 receives the voltage signal, and generates a force effect through an inverse piezoelectric effect to drive the piezoelectric unit 130 to contract and deform along a direction perpendicular to the stacking direction of the pressing unit 110 and the first elastic sheet 120, and drive the first elastic sheet 120 to contract along the stacking direction of the pressing unit 110 and the first elastic sheet 120, so that vibration is transmitted to the pressing unit 110 through the first elastic sheet 120, and the pressing unit 110 can generate displacement along the stacking direction of the pressing unit 110 and the first elastic sheet 120 to achieve touch feedback, so that the touch feedback module 100 can achieve functions of power on, power off, pressure sensing and touch feedback, has relatively many functions, meets the requirement of a user on pursuit of more functions for the same operation, and has good human-computer interaction experience; the touch feedback module 100 is fixed on the fixing position 200 by the elastic support 140, and the assembly tolerance can be absorbed, so that the assembly requirement of the touch feedback module 100 is reduced, the design of the whole machine is simplified, and the product yield is improved.
As shown in fig. 1, in a preferred embodiment, two ends of the elastic support 140, which are connected to the first elastic sheet 120, of the piezoelectric unit 130 are fixedly connected by a fixing adhesive, a double-sided adhesive, or the like, and a gap is formed between the surface of the elastic support 140, which is adjacent to the piezoelectric unit 130 except the two ends connected to the piezoelectric unit 130, and the piezoelectric unit 130, so that the surface of the elastic support 140, which is adjacent to the piezoelectric unit 130 except the two ends connected to the piezoelectric unit 130, and the piezoelectric unit 130 are spaced apart from each other, and the piezoelectric unit 130 is prevented from rubbing against the elastic support 140 when being deformed in a direction perpendicular to the stacking direction of the pressing unit 110 and the first elastic sheet 120, so as to protect the piezoelectric unit 130 and improve the yield of products.
In the above touch feedback module 100, as shown in fig. 1, when specifically configured, the elastic support 140 may be an integrated structure, the integrated structure has a functional region 141, the functional region 141 may be in a structural form similar to the first elastic sheet 120, and is disposed on two sides of the piezoelectric unit 130 opposite to the first elastic sheet 120, two ends of the functional region 141 are fixedly connected to two ends of the piezoelectric unit 130 connected to the first elastic sheet 120, the functional region 141 is adjacent to the surface of the piezoelectric unit 130 except the two ends connected to the piezoelectric unit 130 and has a gap between the surface of the piezoelectric unit 130 and the piezoelectric unit 130, and the elastic support 140 and the fixing position 200 are connected in two ways, one is, as shown in fig. 2, the fixing position 200 is located on a side of the functional region 141 away from the piezoelectric unit 130, and the functional region 141 is fixed to the fixing position 200, as shown in fig. 1, the other is that the integrated structure further has a connecting region 142, the connection area 142 is disposed outside the functional area 141 and connected to the fixing location 200, and at this time, the fixing location 200 may be located at both sides of the touch feedback module 100. Of course, the structure of the elastic support 140 is not limited to this, and other structural forms can be adopted as required, for example, as shown in fig. 3 and 4, the elastic bracket 140 may further include two elastic units 143 spaced apart from each other, the two elastic units 143 are disposed opposite to each other, and a space is provided between the two elastic single bodies 143, one end of one elastic single body 143 is fixed to one end of the piezoelectric unit 130 connected to the first resilient piece 120, the other end of the elastic single body 143 is fixed at a fixed position 200, one end of the other elastic single body 143 is fixed at the other end of the piezoelectric unit 130 connected with the first resilient piece 120, the other end of the elastic unit 143 is fixed to another fixing position 200, and at this time, the two fixing positions 200 may be located at both sides of the touch feedback module 100, the two fixing positions 200 may also be located at a side of the piezoelectric unit 130 away from the first elastic piece 120 and near a middle area of the piezoelectric unit 130; for another example, as shown in fig. 5, the fixing position 200 is located on a side of the piezoelectric unit 130 away from the first elastic sheet 120 and in a middle area of the piezoelectric unit 130, and the piezoelectric unit 130 is connected to the fixing position 200 through the elastic support 140, in which case, the elastic support 140 may be a gasket.
In order to ensure the deformation space of the first elastic sheet 120, specifically, as shown in fig. 1, 2, 3, 4 and 5, the gap between the first elastic sheet 120 and the piezoelectric unit 130 gradually increases from the two ends of the piezoelectric unit 130 to the middle, and the gap between the first elastic sheet 120 and the pressing unit 110 gradually decreases from the two ends of the piezoelectric unit 130 to the middle, so as to adapt to the deformation space required by the first elastic sheet 120 to gradually increase from the two ends of the piezoelectric unit 130 to the middle. Further, the gap between the functional region 141 and the piezoelectric unit 130 gradually increases from the two ends of the piezoelectric unit 130 to the middle in the integrated elastic support 140, so that the structure is symmetrical, and consistency of pressure sensing and uniformity of touch feedback are ensured.
In the touch feedback module 100, the structure of the gap is limited to ensure that each portion of the first elastic sheet 120 can vibrate up and down well. In a specific setting, the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the elastic support 140 may be completely the same, the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the elastic support 140 may be substantially the same, the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the elastic support 140 may also be different, and the gap relationship between the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the elastic support 140 is determined according to the actual situation of the touch feedback module 100.
As shown in fig. 6, in a preferred embodiment, the elastic bracket 140 is connected to the piezoelectric unit 130 through a second elastic sheet 150, a middle area of the second elastic sheet 150 is connected to the elastic bracket 140 through a fixing adhesive, a double-sided adhesive, or the like, two ends of the second elastic sheet 150 are fixedly connected to two ends of the piezoelectric unit 130, which are connected to the first elastic sheet 120, through a fixing adhesive, a double-sided adhesive, or the like, and a gap is formed between a surface of the second elastic sheet 150, which is adjacent to the piezoelectric unit 130 except the two ends, and the piezoelectric unit 130.
In the touch feedback module 100, the elastic support 140 supports the middle region of the second elastic sheet 150, and since a gap is formed between the surface of the second elastic sheet 150 adjacent to the piezoelectric unit 130 except the two ends and the piezoelectric unit 130, the surface of the second elastic sheet 150 adjacent to the piezoelectric unit 130 except the two ends and the piezoelectric unit 130 are spaced apart from each other, so that the piezoelectric unit 130 is prevented from rubbing against the second elastic sheet 150 when being deformed along a direction perpendicular to the stacking direction of the pressing unit 110 and the first elastic sheet 120, the piezoelectric unit 130 is protected, and the yield of products is improved. Specifically, the gap between the second elastic sheet 150 and the piezoelectric unit 130 gradually increases from the two ends of the piezoelectric unit 130 to the middle, so that the structure is symmetrical, and the consistency of pressure sensing and the uniformity of touch feedback are ensured. In a specific setting, the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the second elastic sheet 150 may be completely the same, the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the second elastic sheet 150 may be substantially the same, the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the second elastic sheet 150 may also be different, and the gap relationship between the same position of the piezoelectric unit 130 and the gap between the first elastic sheet 120 and the second elastic sheet 150 is determined according to the actual situation of the touch feedback module 100.
The pressing unit 110 may have various structural forms according to functions, for example, the pressing unit 110 may be a touch pad, the touch pad is fixedly connected to a middle region of the first elastic sheet 120, and when a user presses the touch pad, pressing force is transmitted to the first elastic sheet 120, which causes the first elastic sheet 120 to elongate and deform along a direction perpendicular to a stacking direction of the touch pad and the first elastic sheet 120, so as to drive the piezoelectric unit 130 to elongate and generate voltage output through a positive piezoelectric effect, and the functions of starting up, shutdown and pressure sensing are performed through different threshold values of output voltage. At this time, the piezoelectric unit 130 receives the voltage signal, and through the action of the force generated by the inverse piezoelectric effect, the piezoelectric unit 130 is driven to contract and deform along the stacking direction perpendicular to the touch pad and the first elastic sheet 120, and the first elastic sheet 120 is driven to contract along the stacking direction of the touch pad and the first elastic sheet 120, so that the vibration is transmitted to the touch pad through the first elastic sheet 120, and the touch pad can generate displacement along the stacking direction of the touch pad and the first elastic sheet 120, so as to realize touch feedback.
Of course, the pressing unit 110 may have other structural forms according to functions, and specifically, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the pressing unit 110 includes a fingerprint identification unit 111 and a first rigid support 112, the first rigid support 112 is a plate-shaped structure, the first rigid support 112 is disposed between the fingerprint identification unit 111 and a middle area of the first elastic sheet 120, and the first rigid support 112 is connected to the fingerprint identification unit 111 by a connection method such as a fixing adhesive, a double-sided adhesive, and the first rigid support 112 is connected to the middle area of the first elastic sheet 120 by a connection method such as a fixing adhesive, a double-sided adhesive, and the like.
In the touch feedback module 100, the first rigid support 112 is elastically connected to the middle regions of the fingerprint identification unit 111 and the first elastic sheet 120, respectively, so that the acting force can be transmitted among the fingerprint identification unit 111, the first rigid support 112, and the first elastic sheet 120; the first rigid support 112 is arranged to improve the supporting strength of the fingerprint identification unit 111, so that the stability of the whole structure is ensured. The user presses fingerprint identification unit 111, and fingerprint identification unit 111 gathers user's fingerprint information, and pressing force transmits first shell fragment 120, leads to first shell fragment 120 to take place to extend the deformation along the range upon range of direction that the perpendicular to pressed unit 110 and first shell fragment 120, and then drives piezoelectric unit 130 extension and produces voltage output through the direct piezoelectric effect, through the different threshold values of output voltage and synthesize fingerprint information in order to correspond fingerprint identification, start, shutdown, pressure perception function. At this time, the piezoelectric unit 130 receives the voltage signal, and the piezoelectric unit 130 is driven to contract and deform along a direction perpendicular to the stacking direction of the pressing unit 110 and the first elastic sheet 120 by the action of force generated by the inverse piezoelectric effect, so as to drive the first elastic sheet 120 to contract along the stacking direction of the pressing unit 110 and the first elastic sheet 120, and thus the vibration is transmitted to the fingerprint identification unit 111 and the first rigid support 112 through the first elastic sheet 120, so that the fingerprint identification unit 111 can generate displacement along the stacking direction of the pressing unit 110 and the first elastic sheet 120, and touch feedback is realized, therefore, the touch feedback module 100 can realize fingerprint identification, startup, shutdown, pressure sensing and touch feedback functions, and has relatively many functions, which satisfies the pursuit of a user for realizing more functions for the same operation, and has better human-computer interaction experience.
The connection manner between the elastic support 140 and the piezoelectric unit 130 has various manners, and more specifically, as shown in fig. 7, the touch feedback module 100 further includes a second rigid support 160, the second rigid support 160 is a cavity structure with an open end, the second rigid support 160 can be formed by injection molding, and the second rigid support 160 can also be formed by bending a plate material, wherein:
the second resilient plate 150, the piezoelectric unit 130 and the two ends of the first resilient plate 120 are sequentially stacked and disposed in the second rigid support 160, the middle region of the first resilient plate 120 is disposed corresponding to the opening of the second rigid support 160, the middle region of the first resilient plate 120 protrudes out of the opening of the second rigid support 160, a gap is formed between the lateral end surface of the first resilient plate 120 in the stacking direction and the second rigid support 160, and the middle region of the second resilient plate 150 is fixedly connected to the elastic support 140 through the end of the second rigid support 160 away from the opening, when the configuration is specific, a gap is formed between the lateral end surface of the first resilient plate 120 in the stacking direction and the second rigid support 160 when the first resilient plate 120 has the maximum variation, and the middle region of the first resilient plate 120 is fixedly connected to the first rigid support 112 through connection means such as fixing glue, double-sided glue and the like, the two ends of the first elastic sheet 120, the piezoelectric unit 130 and the second elastic sheet 150 are disposed in the second rigid support 160, the middle area of the second elastic sheet 150 and the middle area of the end of the second rigid support 160 away from the opening are fixedly connected by a fixing adhesive, a double-sided adhesive or the like, and the second rigid support 160 and the elastic support 140 are fixedly connected by a fixing adhesive, a double-sided adhesive or the like;
along the stacking direction of the fingerprint identification unit 111 and the first rigid support 112, the height of the side of the first elastic sheet 120 departing from the piezoelectric unit 130 is greater than the height of the second rigid support 160, so that a gap is formed between the surface of the second rigid support 160 adjacent to the first rigid support 112 and the first rigid support 112, and during specific setting, the height difference between the side of the first elastic sheet 120 departing from the piezoelectric unit 130 and the second rigid support 160 is related to the amplitude of the touch feedback module 100 and is determined according to the actual situation of the touch feedback module 100.
In the touch feedback module 100, by providing the second rigid support 160 and limiting the height of the first elastic sheet 120 away from the piezoelectric unit 130 to be greater than the height of the second rigid support 160, a gap is formed between the surface of the second rigid support 160 adjacent to the first rigid support 112 and the first rigid support 112, so as to limit the fingerprint identification unit 111, the first rigid support 112, the first elastic sheet 120 and the piezoelectric unit 130, thereby preventing the touch feedback module 100 from moving down more significantly when being pressed, and improving user experience. By limiting a gap between the side end surface of the first elastic sheet 120 in the stacking direction and the second rigid support 160, the side end surface of the first elastic sheet 120 in the stacking direction is always kept spaced from the second rigid support 160 in the pressing deformation process, so that the second elastic sheet 150, the piezoelectric unit 130 and two ends of the first elastic sheet 120 collide with the second rigid support 160 when deformed in the stacking direction perpendicular to the pressing unit 110 and the first elastic sheet 120, the smoothness of touch feedback is ensured, and the user experience is improved.
Specifically, as shown in fig. 7, the first rigid support 112 includes a support plate 113 and an annular baffle 114, the annular baffle 114 is disposed on a side of the support plate 113 away from the fingerprint identification unit 111, the first elastic sheet 120 and the fingerprint identification unit 111 are disposed on two sides of the support plate 113, respectively, the second rigid support 160 is disposed in the annular baffle 114, and a gap is formed between a surface of the second rigid support 160 adjacent to the annular baffle 114 and the annular baffle 114 along a stacking direction perpendicular to the fingerprint identification unit 111 and the first rigid support 112.
In the touch feedback module 100, the second rigid support 160 is disposed in the annular baffle 114, so as to limit the movement of the fingerprint identification unit 111, the first rigid support 112, the first elastic sheet 120 and the piezoelectric unit 130 in the stacking direction perpendicular to the stacking direction, and a gap is defined between the surface of the second rigid support 160 adjacent to the annular baffle 114 and the annular baffle 114, so that the annular baffle 114 can block the second rigid support 160 from shaking in the stacking direction perpendicular to the fingerprint identification unit 111 and the first rigid support 112, thereby ensuring the reliability of touch feedback, and simultaneously reducing the shaking amplitude of the touch feedback module 100, and improving the user experience. In a specific arrangement, the supporting plate 113 and the annular baffle 114 may be an integral structure, the supporting plate 113 and the annular baffle 114 are formed by injection molding, or the supporting plate 113 and the annular baffle 114 are formed by bending, and of course, the supporting plate 113 and the annular baffle 114 may also be fixed as a whole by welding, snapping, and the like.
In addition, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, the present invention further provides an electronic device 10, which includes a middle frame 300, and further includes the touch feedback module 100 in any of the above embodiments, where the touch feedback module 100 is disposed on the middle frame 300. The electronic device 10 includes, but is not limited to, a notebook computer, a mobile phone, a vehicle-mounted device, and the like. For example, if the electronic device 10 is a notebook computer, the touch feedback module 100 is an input touch feedback module 100 of the notebook computer, which is also referred to as a PC touch feedback module 100.
In the electronic device 10, because the touch feedback module 100 can realize fingerprint identification, power on, power off, pressure sensing and touch feedback functions, the functions are relatively many, the pursuit of a user for realizing more functions for the same operation is met, human-computer interaction experience is good, the assembly tolerance can be absorbed, the assembly requirement of the touch feedback module 100 is reduced, the design of the whole device is simplified, and the product yield is improved. Therefore, the electronic device 10 having the touch feedback module 100 has relatively many functions, requires low assembly requirements, has a high product yield, and has a good user experience.
As shown in fig. 1, 2, 3, 4, 5, 6 and 7, in a preferred embodiment, when the touch feedback module 100 has the first rigid support 112, the middle frame 300 is provided with a window, the pressing unit 110 of the touch feedback module 100 is embedded in the window of the middle frame 300, the first rigid support 112 of the touch feedback module 100 is disposed inside the middle frame 300, and the elastic support 140 and the piezoelectric unit 130 are disposed inside the middle frame 300, at this time, the fixing position 200 is an end portion of the middle frame 300 spaced apart from the window.
In the electronic device 10, the touch feedback module 100 is embedded in the window of the middle frame 300 to reduce the overall thickness and facilitate the light and thin. The user presses the pressing unit 110, the pressing unit 110 moves downwards in the window, and the pressing force is transmitted to the first elastic sheet 120 through the first rigid support 112, so that the first elastic sheet 120 is elongated and deformed along the direction perpendicular to the stacking direction of the pressing unit 110 and the first elastic sheet 120, the piezoelectric unit 130 is driven to be elongated, voltage output is generated through a positive piezoelectric effect, and the functions of starting up, shutting down and pressure sensing are achieved through different threshold values of output voltage. At this time, the piezoelectric unit 130 receives the voltage signal, and generates a force effect through an inverse piezoelectric effect to drive the piezoelectric unit 130 to contract and deform along a direction perpendicular to the stacking direction of the pressing unit 110 and the first elastic sheet 120, and drive the first elastic sheet 120 to contract along the stacking direction of the pressing unit 110 and the first elastic sheet 120, so that the first elastic sheet 120 vibrates upwards, and the vibration is transmitted to the pressing unit 110 through the first rigid support 112, so that the pressing unit 110 can generate displacement along the stacking direction of the pressing unit 110 and the first elastic sheet 120 to realize touch feedback, and therefore, the touch feedback module 100 can realize functions of startup, shutdown, pressure sensing and touch feedback, has relatively many functions, meets the pursuit of a user for realizing more functions for the same operation, and has good human-computer interaction experience; the touch feedback module 100 is fixed on the fixing position 200 by the elastic support 140, and the assembly tolerance can be absorbed, so that the assembly requirement of the touch feedback module 100 is reduced, the design of the whole machine is simplified, and the product yield is improved. In a specific setting, the projection of the first rigid support 112 on the middle frame 300 completely covers the open window of the middle frame 300, so as to play roles of shielding and limiting.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A touch feedback module is characterized by comprising a pressing unit, a first elastic sheet, a piezoelectric unit and an elastic support, wherein the pressing unit and the piezoelectric unit are respectively arranged on two opposite sides of the first elastic sheet, the pressing unit is fixedly connected with the middle area of the first elastic sheet, the piezoelectric unit is fixedly connected with two ends of the first elastic sheet, and a gap is formed between the surface, adjacent to the piezoelectric unit, of the first elastic sheet and the piezoelectric unit except the two ends connected with the piezoelectric unit; one part of the elastic support is connected to one side of the piezoelectric unit, which is far away from the first elastic sheet, and the other part of the elastic support is connected to a fixed position.
2. The touch feedback module of claim 1, wherein the elastic support comprises a functional region, the functional region is fixedly connected to two ends of the piezoelectric unit, which are connected to the first elastic sheet, and a gap is formed between the surface of the functional region, which is adjacent to the piezoelectric unit, and the piezoelectric unit except the two ends of the functional region, which are connected to the piezoelectric unit.
3. The touch feedback module of claim 2, wherein the elastic support further comprises a connection area surrounding the functional area and fixed to the fixed position.
4. The touch feedback module according to claim 2, wherein the gap between the functional region and the piezoelectric unit gradually increases from the two ends of the piezoelectric unit to the middle, and the middle region of the functional region is fixedly connected to the fixing position.
5. The touch feedback module according to claim 1, wherein the elastic support comprises two elastic single bodies arranged at intervals in a direction perpendicular to the stacking direction of the first elastic sheet and the piezoelectric unit, and the two elastic single bodies are arranged oppositely and respectively connected with the end part of the piezoelectric unit connected with the first elastic sheet and the fixing position.
6. The touch feedback module according to claim 1, wherein the elastic support is connected to the piezoelectric unit through a second elastic sheet, a middle region of the second elastic sheet is connected to the elastic support, two ends of the second elastic sheet are fixedly connected to two ends of the piezoelectric unit, which are connected to the first elastic sheet, and a gap is formed between the surface of the second elastic sheet, which is adjacent to the piezoelectric unit, and the piezoelectric unit except the two ends of the second elastic sheet, which are connected to the piezoelectric unit.
7. The touch feedback module according to claim 6, wherein the pressing unit comprises a fingerprint identification unit and a first rigid support, and the first rigid support is of a plate-shaped structure, is arranged between the fingerprint identification unit and the middle area of the first elastic sheet, and is connected with the fingerprint identification unit and the middle area of the first elastic sheet respectively.
8. The touch feedback module of claim 7, further comprising a second rigid support, wherein:
the second elastic sheet, the piezoelectric unit and two ends of the first elastic sheet are sequentially stacked in the second rigid support, the second rigid support is provided with an opening corresponding to the middle area of the first elastic sheet, the middle area of the first elastic sheet protrudes out of the opening, a gap is formed between the surface, adjacent to the second rigid support, of the side end face of the first elastic sheet along the stacking direction and the second rigid support, and the middle area of the second elastic sheet is fixedly connected with the elastic support through the end, away from the opening, of the second rigid support;
along the stacking direction of the fingerprint identification unit and the first rigid support, the height of one side, deviating from the piezoelectric unit, of the first elastic sheet is larger than the height between the second rigidities.
9. The touch feedback module according to claim 8, wherein the first rigid support includes a supporting plate and an annular baffle, the annular baffle is disposed on a side of the supporting plate away from the fingerprint identification unit, the first elastic sheet and the fingerprint identification unit are disposed on two sides of the supporting plate respectively, the second rigid support is disposed in the annular baffle, and a gap is formed between a surface of the second rigid support adjacent to the annular baffle and the annular baffle along a stacking direction perpendicular to the fingerprint identification unit and the first rigid support.
10. An electronic device comprising a middle frame, further comprising the touch feedback module of any one of claims 1 to 9, wherein the touch feedback module is disposed on the middle frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652105.0A CN111813221A (en) | 2020-07-08 | 2020-07-08 | Touch feedback module and electronic equipment |
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| CN202010652105.0A CN111813221A (en) | 2020-07-08 | 2020-07-08 | Touch feedback module and electronic equipment |
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| CN111813221A true CN111813221A (en) | 2020-10-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745031A (en) * | 2021-09-01 | 2021-12-03 | 维沃移动通信有限公司 | Keyboard structure and electronic equipment |
| CN114415851A (en) * | 2021-10-20 | 2022-04-29 | 广东虹勤通讯技术有限公司 | Global pressing computer touch pad |
| WO2022170445A1 (en) * | 2021-02-09 | 2022-08-18 | 欧菲光集团股份有限公司 | Touch-control module and electronic device |
| WO2022193583A1 (en) * | 2021-03-17 | 2022-09-22 | 江西欧迈斯微电子有限公司 | Touch feedback module and electronic device |
| TWI787995B (en) * | 2021-09-08 | 2022-12-21 | 致伸科技股份有限公司 | Touch pad module and computer using the same |
-
2020
- 2020-07-08 CN CN202010652105.0A patent/CN111813221A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022170445A1 (en) * | 2021-02-09 | 2022-08-18 | 欧菲光集团股份有限公司 | Touch-control module and electronic device |
| WO2022193583A1 (en) * | 2021-03-17 | 2022-09-22 | 江西欧迈斯微电子有限公司 | Touch feedback module and electronic device |
| CN113745031A (en) * | 2021-09-01 | 2021-12-03 | 维沃移动通信有限公司 | Keyboard structure and electronic equipment |
| TWI787995B (en) * | 2021-09-08 | 2022-12-21 | 致伸科技股份有限公司 | Touch pad module and computer using the same |
| CN114415851A (en) * | 2021-10-20 | 2022-04-29 | 广东虹勤通讯技术有限公司 | Global pressing computer touch pad |
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Address after: 330096 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Applicant after: Jiangxi oumaisi Microelectronics Co., Ltd Address before: 330200 east of Xueyuan 6th Road, south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Jiangxi Province Applicant before: Oufei Microelectronics Technology Co.,Ltd. |