CN202582565U - A piezoelectric sensor, and a touch-controlled assembly and a mobile terminal which utilize the piezoelectric sensor - Google Patents
A piezoelectric sensor, and a touch-controlled assembly and a mobile terminal which utilize the piezoelectric sensor Download PDFInfo
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- CN202582565U CN202582565U CN 201220027815 CN201220027815U CN202582565U CN 202582565 U CN202582565 U CN 202582565U CN 201220027815 CN201220027815 CN 201220027815 CN 201220027815 U CN201220027815 U CN 201220027815U CN 202582565 U CN202582565 U CN 202582565U
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Abstract
The utility model provides a piezoelectric sensor comprising a circular sensor core, an insulating ring, an annular cathode, and conducting resin. The circular sensor core and the insulating ring are produced by ceramic. The circular sensor core comprises a circular anode and a circular cathode and the circular anode is located at the front side of the piezoelectric sensor while the circular cathode is located at the back side of the piezoelectric sensor. In radial direction, the insulating ring is sleeved on the circular electrodes while the circular cathode is sleeved on the insulating ring. The circular sensor core, the insulating ring, and the annular cathode are located on the surface of the front side of the piezoelectric sensor and are in a same plane. The circular cathode of the circular sensor core communicates with the annular cathode through the conducting resin. The utility model also comprises a touch-controlled assembly and a mobile terminal which utilize the piezoelectric sensor.
Description
Technical field
The utility model relates to piezoelectric sensor and uses the touch control component of this piezoelectric sensor.
Background technology
Along with the fast development of electronic message unit, the man-machine interaction of electronic product device no longer only is confined to button, and various touch input type human-computer interaction devices are invented in succession, and People more and more gets used to directly on display panel, carrying out touch operation.For the coordinate input that realizes clicking contacts such as hand, pen; Prior art is mainly through at the surface of contact of display panel (promptly; The one side that contacts such as finger, pen directly contact) is provided with the contactor control device of sensor on, directly carries out man-machine interaction on the display panel thereby be implemented in.
Have multiple touch input device at present, but all exist various defectives.For example, infrared tube formula contactor control device, it adopts infrared sensor, and its defective is to carry out touch control operation in the time of can not on high light and screen, shelter being arranged; The electric resistance touch-control device, it adopts resistance sensor, and its defective is that transmittance is relatively poor, needs certain pressure just can carry out touch control operation; Capacitive touch device, it adopts capacitance type sensor, and its defective is can't carry out touch control operation etc. when water is arranged with the touch-control pointing device of hand or type hand.In addition, resistance-type and capacitive touch device all need be laid sensor film before display panel, and this can influence display effect, and be especially more obvious when adopting reflective display screen.
The utility model content
In order to overcome the defective of prior art, the purpose of the utility model provides a kind of piezoelectric sensor.
According to the first aspect of the utility model, a kind of piezoelectric sensor is provided, it comprises: circular sensor core, dead ring, annular negative pole and conducting resinl, said circular sensor core and said dead ring are made by piezoelectric; Wherein said circular sensor core comprises circular positive pole and circular negative pole, and said circular positive pole is positioned at the face side of said piezoelectric sensor, and said circular negative pole is positioned at the rear side of said piezoelectric sensor; Directly make progress at said piezoelectric sensor, said dead ring is enclosed within the said circular sensor core outside, and said annular negative pole is enclosed within the outside of said dead ring; Said circular sensor core, dead ring and annular negative pole are positioned at same plane on the surface of the face side of said piezoelectric sensor; The circular negative pole of said circular sensor core and said annular negative pole are communicated with through conducting resinl.According to the second aspect of the utility model, a kind of touch control component is provided, it comprises display panel, the piezoelectric sensor more than three, circuit board, control panel and connector, wherein said piezoelectric sensor is a piezoelectric sensor recited above; The rear side of said piezoelectric sensor and the back side of display panel are fixed together, and the positive pole and the negative pole of said piezoelectric sensor are connected to circuit board, and said circuit board is connected with control panel through said connector.
According to the third aspect of the utility model, a kind of portable terminal is provided, it comprises main frame and touch panel, and wherein said touch panel adopts touch control component recited above, and the control panel of said touch control component is connected with main frame.
Utilize the piezoelectric sensor of the utility model, the touch-control location is more accurate.In addition, can make circuit side connector just.
Description of drawings
Figure 1A shows the vertical view of a kind of piezoelectric sensor of the utility model;
Figure 1B shows the side view of the piezoelectric sensor shown in Figure 1A;
Fig. 2 A shows the vertical view of the another kind of piezoelectric sensor of the utility model;
Fig. 2 B shows the side view of the piezoelectric sensor shown in Fig. 2 A;
Fig. 3 shows the side view of the touch control component that the piezoelectric sensor by the utility model constitutes.
Embodiment
Through embodiment the utility model is described in further detail below in conjunction with accompanying drawing, but the utility model is not restricted to this.
The utility model provides a kind of piezoelectric sensor, and it comprises: circular sensor core, dead ring, annular negative pole and conducting resinl, and said circular sensor core and said dead ring are made by piezoelectric; Wherein said circular sensor core comprises circular positive pole and circular negative pole, and said circular positive pole is positioned at the face side of said piezoelectric sensor, and said circular negative pole is positioned at the rear side of said piezoelectric sensor; Directly make progress at said piezoelectric sensor, said dead ring is enclosed within the said circular electrode outside, and said annular negative pole is enclosed within the outside of said dead ring; Said circular sensor core, dead ring and annular negative pole are positioned at same plane on the surface of the face side of said piezoelectric sensor, and the circular negative pole of said circular sensor core and said annular negative pole are communicated with through conducting resinl.
Wherein annular negative pole can take different shapes, and can be the ring of hollow, also can be have the bottom, periphery is the calotte of ring-type.
When annular negative pole was the ring of hollow, said circular sensor core, said dead ring and said annular negative pole can be made by pottery or other piezoelectric.Said conducting resinl is coated on the surface of the rear side that is positioned at piezoelectric sensor of said circular sensor core, dead ring and annular negative pole.In addition, in order to make the easy to connect of piezoelectric sensor and circuit board, can the ring edge of conducting resinl through annular negative pole be applied on the surface that is positioned at the piezoelectric sensor face side of annular negative pole.At this moment conducting resinl can be coated on the sub-fraction of ring edge of annular negative pole or on most, or be coated on the full annular edge of annular negative pole.In addition, the rear side of this piezoelectric sensor can also bonding circular conduction reinforced sheet.Circular conduction reinforced sheet is identical with the round section size of said piezoelectric sensor; And the back side through conducting resinl and said piezoelectric sensor closely is bonded together, and said circular conduction reinforced sheet constitutes the negative pole of said piezoelectric sensor with circular negative pole, annular negative pole.Wherein circular conduction reinforced sheet can be made by metal, preferably uses the ductility metal close with pottery, for example nickel.
When annular negative pole be have the bottom, when periphery is the calotte of ring-type, can adopt the hat conducting strip, it is made by conductive material.At this moment, said circular sensor core and dead ring are contained in the hat depression of said hat conducting strip.Alternatively, the shade side of said hat conducting strip can have outward extending diametrically projection.In addition, said circular sensor core can be by ceramic; Said dead ring is by the ring of ceramic or the space between circular sensor core and annular negative pole.
Utilize the piezoelectric sensor of the utility model, can make touch control component, said touch control component can be used for making the touch-screen or the touch panel of portable terminal or other electronic equipment.
Said touch control component comprises piezoelectric sensor, circuit board, control panel and the connector of display panel, the utility model more than three.The rear side of wherein said piezoelectric sensor and the back side of display panel are fixed together, and the positive pole and the negative pole of said piezoelectric sensor are connected to circuit board, and said circuit board is connected with control panel through said connector.
Specify the embodiment of the utility model below in conjunction with Figure 1A, Figure 1B, Fig. 2 A, Fig. 2 B.
Figure 1A shows the vertical view of a kind of piezoelectric sensor of the utility model, and Figure 1B shows the side view of the piezoelectric sensor shown in Figure 1A.
Shown in Figure 1A, the piezoelectric sensor of the utility model comprises: circular sensor core 101, dead ring 102, annular negative pole 103 and conducting resinl.Wherein circular sensor core 101 has circular positive pole and circular negative pole, and circular positive pole is positioned at the front of piezoelectric sensor, constitutes the positive pole of piezoelectric sensor, also can be described as positive anodal; Circular negative pole is positioned at the back side of piezoelectric sensor, also can be described as back side negative pole.Here " front " is meant the plane that positive and negative electrode was positioned at of piezoelectric sensor, and " back side " is meant another side relative with " front ", piezoelectric sensor.
Said dead ring 102 is positioned at the outside of circular sensor core 101 and is looped around the circular circumference of circular sensor core 101.Said annular negative pole 103 is positioned at the outside of dead ring 102 and is looped around the circular circumference of dead ring 102.Said conducting resinl is coated in the whole back side of piezoelectric sensor and is positioned at the positive whole surface of piezoelectric sensor from what the ring edge of annular negative pole 103 was applied to annular negative pole 103, and the whole back side of said piezoelectric sensor comprises circular negative terminal surface, dead ring surface and the annular negative terminal surface of the circular sensor core 101 that is positioned at the piezoelectric sensor rear side.Said circular sensor core 101, dead ring 102 and annular negative pole 103 are by ceramic.
In addition, the piezoelectric sensor shown in Figure 1A can according to circumstances use circular conduction reinforced sheet 104.When piezoelectric sensor intensity is enough high, need not use circular conduction reinforced sheet; When piezoelectric sensor is very thin, insufficient strength is high, when being prone to fragmentation, preferably use circular conduction reinforced sheet.Circular conduction reinforced sheet 104 has big or small identical round section with piezoelectric sensor among Figure 1A, and closely is bonded together through the back side of conducting resinl and said piezoelectric sensor.Thus, circular conduction reinforced sheet 104 is connected the circular negative pole of circular sensor core 101 with annular negative pole 103, and the three constitutes the negative pole of piezoelectric sensor jointly.Said circular conduction reinforced sheet 104 need adopt the conductive material making, and for example metal when adopting metal to make, preferably adopts with ceramic nickel with identical ductility and makes.
Figure 1B shows the situation that the piezoelectric sensor shown in Figure 1A has circular conduction reinforced sheet 104.In this case, the negative pole of piezoelectric sensor is made up of circular negative pole, annular negative pole 103 and the circular conduction reinforced sheet 104 of circular sensor core 101 together.
For make piezoelectric sensor convenient with FPC (Flexible Printed Circuit, i.e. flexible PCB) or the welding of other circuit boards or bonding with conducting resinl, the negative pole of piezoelectric sensor and positive pole are positioned on the same plane.The utility model is the front that is applied to annular negative pole 103 through the conducting resinl on the back side that will be coated in piezoelectric sensor through the edge of annular negative pole 103; Like this; The back side negative pole of circular sensor core 101 is communicated to the front of annular negative pole 103 through conducting resinl, thereby the negative pole of piezoelectric sensor can be drawn from the front of annular negative pole 103.Wherein, conducting resinl can according to circumstances be decided in the position of the ring edge coating of annular negative pole 103.For example; For the convenience of processing; Can be on the sub-fraction of the ring edge of annular negative pole 103 coating electrically conductive glue; But at this moment since the negative pole of piezoelectric sensor only the sub-fraction of the ring edge through annular negative pole 103 be communicated with the back side negative pole of circular sensor core 101, so cause the negative pole disconnection easily, can't be communicated with.Preferably, at coating electrically conductive glue on the major part of the ring edge of annular negative pole 103 or on the whole edge.More preferably, the circular conduction of use reinforced sheet 104, the position that negative pole is communicated with expands to most of perhaps full annular edge of annular negative pole 103 of the ring edge of annular negative pole 103, and this can make the conducting better effects if.
The utility model also provides another kind of piezoelectric sensor.Fig. 2 A shows the vertical view of said another kind of piezoelectric sensor; Fig. 2 B shows the side view of the piezoelectric sensor shown in Fig. 2 A.
Shown in Fig. 2 A, the piezoelectric sensor of the utility model comprises: circular sensor core 201, hat conduction reinforced sheet 204, dead ring 202 and conducting resinl.Wherein circular sensor core 201 has circular positive pole and circular negative pole by ceramic, and circular positive pole is positioned at the front of piezoelectric sensor; Constitute the positive pole of piezoelectric sensor; Also can be described as positive positive pole, circular negative pole is positioned at the back side of piezoelectric sensor, also can be described as back side negative pole.Said circular sensor core 201 is contained in the depression of said hat conduction reinforced sheet 204, and the shade side that said hat conduction reinforced sheet 204 is positioned at the circular side of the positive electrode of circular sensor core 201 is positioned at identical plane with circular anodal surface.Between said circular sensor core 201 and said hat conduction reinforced sheet 204, it can be the space between circular sensor core and annular negative pole to said dead ring 202, also can be the ring by ceramic diametrically.Said hat conduction reinforced sheet 204 is communicated with the back side negative pole of circular sensor core 201 through conducting resinl.
Said hat conduction reinforced sheet 204 can be configured to the tubular of hollow, also can the shade side be designed with the shape of projection, and said projection stretches out in circular anodal plane diametrically.Said hat conduction reinforced sheet 204 can be an integral body of being made by conductive material; It also can be the assembly of combining by two parts; Said two parts comprise the circular portion that is positioned at circular negative side (being the tube end of tubular) and around the annular section (being the barrel of tubular) of circular sensor core 201; These two parts can be made by identical materials, also can be by number of various materials.The conductive material that is used for making hat conduction reinforced sheet 204 for example can be metal, is preferably nickel.Said hat conduction reinforced sheet 204 has protection circular sensor core 201 and does not receive external force to disturb and increase the effect of the intensity of piezoelectric sensor.
In the piezoelectric sensor shown in Fig. 2 A, the circular negative pole of circular sensor core 201, conducting resinl and hat conduction reinforced sheet 204 form the negative pole of piezoelectric sensor together.Because the shade position of hat conduction reinforced sheet 204 is positioned at and the circular anodal identical plane of circular sensor core 201, help the welding of this piezoelectric sensor and FPC or other circuit boards or bonding with conducting resinl.
In addition, the utility model also provides a kind of touch control component, and this touch control component comprises the piezoelectric sensor more than three.Said piezoelectric sensor can adopt the piezoelectric sensor shown in the piezoelectric sensor shown in above-mentioned Figure 1A or Fig. 2 A, also can adopt two kinds of piezoelectric sensors simultaneously.
Fig. 3 shows the structural representation of the touch control component of the piezoelectric sensor that has used the utility model.As shown in Figure 3, the touch control component of the utility model comprises: display panel 301, piezoelectric sensor 302, circuit board 303, control panel 305 and connector 304.Wherein said display panel 301 faces up; The back side of the rear side of piezoelectric sensor 302 and display panel 301 is fixed together; For example be fixed together through tackifier; Thereby make piezoelectric sensor 302 can receive the touching signals on the display panel 301 well, the face side of piezoelectric sensor 302 (being positioned at the positive pole and negative pole of face side) is connected with circuit board 303, for example closely links together through welding or mode such as conducting resinl and circuit board 303.Circuit board 303 is connected with control panel 305 through connector 304.Said connector 304 can be flexible PCB or other flexible connectors.Said control panel 305 is collected from the signal of piezoelectric sensor and is handled.
In the above-mentioned touch control component of the utility model, the quantity of said piezoelectric sensor 302 can preferably, be more than four for more than three.Said a plurality of piezoelectric sensor 302 can be arranged in rectangular shape, also can be arranged in other shape.Above-mentioned said circuit board 303 can be FPC or other circuit boards.
The utility model also provides a kind of portable terminal, and this portable terminal comprises main frame and touch-screen or touch panel, and said touch-screen or touch panel adopt the touch control component of the utility model, and at this moment the control panel of touch control component is connected with the main frame of said portable terminal.In fact, the touch control component of the utility model is not limited to be applied to portable terminal, can be applied in the electronic equipment of any use touch-screen or touch panel.
When on display panel 301, having touch control operation to take place; Piezoelectric sensor 302 can perceive touch control operation significantly; And be electric energy through self-characteristic with these energy conversion that perceive, circuit board 303 is brought together the electric energy of piezoelectric sensor 302 conversions and delivers to control panel 305 through connector 304.By control panel 305 the touch-control coordinate of touch control operation is handled and calculated to the signal of collecting, send the touch-control coordinate to main frame then.Main frame is made corresponding reaction according to the touch-control coordinate, thereby accomplishes the touch-control positioning action one time.
In addition, the circular piezoelectric sensor of the utility model employing because circular piezoelectric sensor does not have directivity, so the energy that obtains in all directions all compares equilibrium, thereby makes the touch location more accurate.
More than describing only is the embodiment of the utility model; Should be noted that; For the person of ordinary skill of the art; Under the prerequisite of the spirit that does not break away from the utility model, can do some improvement, modification and distortion, these improve, revise and distortion all should be regarded as dropping in the application's the protection domain.
Claims (11)
1. a piezoelectric sensor is characterized in that, comprising: circular sensor core, dead ring, annular negative pole and conducting resinl, and said circular sensor core and said dead ring are made by piezoelectric;
Wherein said circular sensor core comprises circular positive pole and circular negative pole, and said circular positive pole is positioned at the face side of said piezoelectric sensor, and said circular negative pole is positioned at the rear side of said piezoelectric sensor;
Directly make progress at said piezoelectric sensor, said dead ring is enclosed within the said circular sensor core outside, and said annular negative pole is enclosed within the outside of said dead ring;
Said circular sensor core, dead ring and annular negative pole are positioned at same plane on the surface of the face side of said piezoelectric sensor;
The circular negative pole of said circular sensor core and said annular negative pole are communicated with through conducting resinl.
2. piezoelectric sensor according to claim 1 is characterized in that,
Said annular negative pole is a ring, and said circular sensor core, said dead ring and said annular negative pole are by ceramic.
3. piezoelectric sensor according to claim 2 is characterized in that,
Said conducting resinl is applied on the surface that is positioned at the piezoelectric sensor face side of annular negative pole through the ring edge of annular negative pole.
4. piezoelectric sensor according to claim 3 is characterized in that, said conducting resinl is coated on the part of ring edge of said annular negative pole or on the full annular edge of annular negative pole.
5. piezoelectric sensor according to claim 1 is characterized in that, also comprises:
Circular conduction reinforced sheet, this circle conduction reinforced sheet is identical with the round section size of said piezoelectric sensor, and closely is bonded together through the back side of conducting resinl and said piezoelectric sensor,
Said circular conduction reinforced sheet constitutes the negative pole of said piezoelectric sensor with circular negative pole, annular negative pole.
6. piezoelectric sensor according to claim 5 is characterized in that,
Said circular conduction reinforced sheet is made by metal.
7. piezoelectric sensor according to claim 1 is characterized in that,
Said annular negative pole is the hat conducting strip, and it is made by conductive material, and said circular sensor core and dead ring are contained in the hat depression of said hat conducting strip.
8. piezoelectric sensor according to claim 7 is characterized in that,
The shade side of said hat conducting strip has outward extending diametrically projection.
9. according to claim 7 or 8 described piezoelectric sensors, it is characterized in that,
Said circular sensor core is by ceramic;
Said dead ring is by the ring of ceramic or the space between circular sensor core and annular negative pole.
10. touch control component, it comprises display panel, the piezoelectric sensor more than three, circuit board, control panel and connector, it is characterized in that,
Said piezoelectric sensor is any one described piezoelectric sensor among the claim 1-9;
The rear side of said piezoelectric sensor and the back side of display panel are fixed together, and the positive pole and the negative pole of said piezoelectric sensor are connected to circuit board, and said circuit board is connected with control panel through said connector.
11. a portable terminal, it comprises main frame and touch panel, it is characterized in that,
Said touch panel adopts the described touch control component of claim 10,
The control panel of said touch control component is connected with main frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220027815 CN202582565U (en) | 2012-01-21 | 2012-01-21 | A piezoelectric sensor, and a touch-controlled assembly and a mobile terminal which utilize the piezoelectric sensor |
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| CN 201220027815 CN202582565U (en) | 2012-01-21 | 2012-01-21 | A piezoelectric sensor, and a touch-controlled assembly and a mobile terminal which utilize the piezoelectric sensor |
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| US10859309B2 (en) | 2015-11-27 | 2020-12-08 | Lg Electronics Inc. | Refrigerator |
| CN111678626B (en) * | 2020-08-11 | 2020-12-08 | 山东道永盛信息科技有限公司 | Piezoelectric sensor containing interweaved flexible sensitive element and detection method thereof |
| CN111678626A (en) * | 2020-08-11 | 2020-09-18 | 潍坊研翔仪器仪表科技有限公司 | Piezoelectric sensor containing interweaved flexible sensitive element and detection method thereof |
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