CN103472926A - Flexible piezoelectric keyboard and method for manufacturing flexible piezoelectric keyboard - Google Patents
Flexible piezoelectric keyboard and method for manufacturing flexible piezoelectric keyboard Download PDFInfo
- Publication number
- CN103472926A CN103472926A CN201310467430XA CN201310467430A CN103472926A CN 103472926 A CN103472926 A CN 103472926A CN 201310467430X A CN201310467430X A CN 201310467430XA CN 201310467430 A CN201310467430 A CN 201310467430A CN 103472926 A CN103472926 A CN 103472926A
- Authority
- CN
- China
- Prior art keywords
- flexible
- electrode
- piezoelectric
- keyboard
- bottom electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a flexible piezoelectric keyboard which comprises an upper flexible panel, an upper electrode, a piezoelectric film, a lower electrode and a lower flexible backboard. The upper flexible panel, the upper electrode, the piezoelectric film, the lower electrode and the lower flexible backboard are sequentially arranged from top to bottom. The upper electrode and the lower electrode are led out from leads, and connected with an external processor, the flexible piezoelectric keyboard is of a novel piezoelectric keyboard structure, piezoelectric composite materials with the high piezoelectric property are used as a force sensing element, the flexibility is high, the response speed is high, the shock resistance is good, the keyboard is durable, the conversion between mechanical energy and electric energy is permanent, an electric signal is generated by touching a button, fatigue damage can not be generated, the service life is long, the manufacturing process is simple, the cost is low, and the yield is high. The flexible piezoelectric keyboard is simple in structure, ultra-thin, light in mass, small in occupied space and portable in carrying, and is connected with a flat computer and a smart phone in a wire or wireless mode, the keyboard input is more rapid and convenient, and the flexible piezoelectric keyboard can be used for mobile officing and have great market prospects.
Description
Technical field
The present invention relates to a kind of keyboard, particularly a kind of flexible piezoelectric keyboard and preparation method thereof.
Background technology
Now in the family expenses such as telepilot, mobile phone, computor-keyboard and personal digital product, keyboard commonly used mostly is mechanical type rigidity keyboard, by several independently keyboard button combine, button and key substrate are detachable, each button is supported by flexible member, mainly by the mobile clutch that promotes mechanical contact of sliding, simultaneously by its responsive state of electrical detection.The long-term elastomer block of using can follow the string, and keyboard button can be malfunctioning; Gap is arranged between button, the anti-layer of waterproof poor performance, mechanical fault is many, and serviceable life is low.And carry out on this basis improved general flexible keyboard, and design the plasticity utricule with cavity on plastic circuit board as patent CN2643463Y, make button there is certain flexibility, improve to some extent from surface structure, but fundamentally do not address the above problem.And patent CN102622089A, CN102622090A, the described flexible keyboard of CN102622091A, adopt carbon nanotube layer as conductive layer, by detecting the electrical pickoff change in voltage key range signal of upper and lower conductive layers, the complicated process of preparation of carbon nano-tube, cost costliness; And in the making of this kind of keyboard, between the upper/lower electrode layer, be the point-like spacer disperseed, poor insulativity, easily conducting causes that keyboard is malfunctioning up and down.In addition, also have novel piezoelectric film key patent report, the force sensing element that patent CN202889319U adopts is the ferroelectret organic film, and complicated process of preparation is difficult to be controlled; And sandwich construction (supporting layer, encapsulated layer etc.), complex structure, poor sensitivity arranged.Patent CN203193599U adopts metal decking as touch panel, and quality is hard, and sense of touch is poor; The metal decking rigidity is strong, needs very large power touching metal decking, and reaction velocity is slow, and sensitivity is poor.And the piezoelectricity flexible keyboard that this patent is taked can be avoided the problems referred to above.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of flexible, ultra-thin, waterproof of flexibility, the piezoelectric type key board that preparation technology is simple, sensitivity is good.
The present invention for the technical scheme that solves its technical matters and adopt is: a kind of flexible piezoelectric keyboard, comprise upper flexible panel, top electrode, piezoelectric membrane and the bottom electrode and the lower flexible back plate that set gradually from the top down, described top electrode and bottom electrode are drawn by lead-in wire, with outer processor, are connected.
As a further improvement on the present invention, described very some independent electrodes that power on form, and each electrode is drawn by lead-in wire; Described bottom electrode is full electrode, or the independently electrode of drawing by lead-in wire that all is together in series forms.
As a further improvement on the present invention, the described very some groups of independent electrodes that laterally connect that power on form, and every group of electrode drawn by lead-in wire; Described bottom electrode is that the some groups of independent electrodes that vertically connect form, and every group of electrode drawn by lead-in wire, and independent electrode can suitably reduce the area of electrode layer, reduces production costs.
As a further improvement on the present invention, described piezoelectric membrane is the organic-inorganic piezo-electricity composite material.
As a further improvement on the present invention, described electrode and contact conductor are metal material or other conductive materials.
As a further improvement on the present invention, described upper flexible panel and lower flexible back plate are plate shaped or protruding finger-type, and upper flexible panel and lower flexible back plate be leather, resin, plastics, sheet rubber or other flexible materials, the sense of touch of hand more.
A kind of method for making of flexible piezoelectric keyboard, be printed onto bottom electrode on lower flexible back plate, and piezoelectric membrane is printed onto on bottom electrode, and top electrode is printed onto on piezoelectric membrane, and upper flexible panel bonds on top electrode.
The method for making of another kind of flexible piezoelectric keyboard, after top electrode and bottom electrode are compounded in to the upper and lower surface of piezoelectric membrane, then by piezoelectric membrane complex gummed or be compressed between upper flexible panel and lower flexible back plate.
In the method for making of above-mentioned flexible piezoelectric keyboard, described top electrode and bottom electrode are compounded in the piezoelectric membrane upper and lower surface by methods such as printing, magnetron sputtering, chemical settlings.
The invention has the beneficial effects as follows:
1, this flexible piezoelectric keyboard is a kind of novel piezoelectric type keyboard structure, adopts piezo-electricity composite material that piezoelectric property is high as force sensing element, highly sensitive, fast response time;
2, resistance to impact is good, durable in use, and the conversion of mechanical energy and electric energy is permanent, and the touching button will produce electric signal, and can not produce fatigure failure, long service life;
3, manufacture craft is simple, with low cost, and yields is high;
4, simple in structure, ultra-thin, light weight, take up room little, and portable carrying is connected with panel computer, smart mobile phone by wired or wireless mode, and the keyboard-type input is more quick and convenient, can be used for mobile office, and very large market outlook are arranged.
The accompanying drawing explanation
Fig. 1 is the first flexible piezoelectric keyboard schematic cross-section;
Fig. 2 is the second flexible piezoelectric keyboard schematic cross-section;
Fig. 3 is the upper electrode arrangement schematic diagram in embodiment 1;
Fig. 4 is one of bottom electrode schematic diagram in embodiment 1;
Fig. 5 is two of bottom electrode schematic diagram in embodiment 1;
Fig. 6 is the top electrode schematic diagram in embodiment 2;
Fig. 7 is the bottom electrode schematic diagram in embodiment 2;
Fig. 8 is the partial structurtes schematic diagram of A part after compound in Fig. 6 and Fig. 7.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment 1: a kind of flexible piezoelectric keyboard as shown in Fig. 1 or 2, comprise piezoelectric membrane 1, top electrode 2 and bottom electrode 3, upper flexible panel 4 and lower flexible back plate 5, piezoelectric membrane 1 is placed between top electrode 2 and bottom electrode 3, upper/lower electrode is drawn by lead-in wire, with outer processor, be connected, its method for making adopts thick film screen printing technique, bottom electrode 3 is printed onto on lower flexible back plate 5, piezoelectric membrane 1 is printed onto on bottom electrode 31, and top electrode 2 is printed onto on piezoelectric membrane 1, and upper flexible panel 4 bonds on top electrode 21.
Piezoelectric membrane is piezo-electricity composite material, by the compound formation of lead/leadless piezoelectric ceramics and macromolecular material (as PVDF etc.) is arranged, thickness is several microns to several thousand microns, it is a chip one-piece construction, top electrode as shown in Figure 3, be spaced electrodes, several separate electrodes 21 draw 22 via line and draw; Bottom electrode as shown in Figure 4, is full electrode; Perhaps as shown in Figure 5, by going between, 32 all be together in series, can reduce the electrode layer area.Electrode and contact conductor, by the preparation of the methods such as etching, printing, magnetron sputtering, chemical settling, are connected with outer processor; Top panel, lower backboard can be flat (Fig. 1), also can be protruding finger-type (Fig. 2), increase the sense of touch of hand, and its material can be leather, resin, plastics, rubber or other flexible materials.When button is received external influence power, can produce mechanical deformation, due to direct piezo electric effect, the piezoelectric element surface electrode can produce electric charge, feed back to outer processor by lead-in wire again, and signal is processed to output, be connected with external host device by the wire/wireless connected mode.
Embodiment 2: another embodiment of the invention, and structure is similar to embodiment 1, and difference is:
The piezoelectric membrane top electrode as shown in Figure 6, is comprised of the conductive electrode 21 of some groups of longitudinal arrangements, and each conductive electrode group is drawn by a lead-in wire 22; Bottom electrode as shown in Figure 7, is that some groups of transversely arranged conductive electrodes 31 form, and each conductive electrode group is drawn by a lead-in wire 32.This kind of lead-in wire connected mode is simpler, and an independent electrode goes between up and down corresponding to one group, as shown in Figure 8.And the employing gluing technique, be compounded in the upper and lower surface of piezoelectric membrane 1 by top electrode 21 and bottom electrode 31, then the piezoelectric membrane complex glued together or is compressed between upper flexible panel 4 and lower flexible back plate 5.
Claims (9)
1. a flexible piezoelectric keyboard, it is characterized in that: comprise upper flexible panel (4), top electrode (2), piezoelectric membrane (1) and the bottom electrode (3) and the lower flexible back plate (5) that set gradually from the top down, described top electrode (2) and bottom electrode (3) are drawn by lead-in wire, with outer processor, are connected.
2. flexible piezoelectric keyboard according to claim 1 is characterized in that: described top electrode (2) forms for some independent electrodes (21), and each electrode is drawn by lead-in wire (22); Described bottom electrode (3) is full electrode, or the independently electrode (31) of drawing by lead-in wire (32) that all is together in series forms.
3. flexible piezoelectric keyboard according to claim 1 is characterized in that: described top electrode (2) forms for the some groups of independent electrodes (21) that vertically connect, and every group of electrode (21) drawn by lead-in wire (22); Described bottom electrode (3) is that the some groups of independent electrodes (31) that laterally connect form, and every group of electrode (31) drawn by lead-in wire (32).
4. flexible piezoelectric keyboard according to claim 1, it is characterized in that: described piezoelectric membrane (1) is the organic-inorganic piezo-electricity composite material.
5. according to the described flexible piezoelectric keyboard of any one in claim 1-3, it is characterized in that: described electrode and contact conductor are metal material or other conductive materials.
6. flexible piezoelectric keyboard according to claim 1, it is characterized in that: described upper flexible panel (4) and lower flexible back plate (5) are plate shaped or protruding finger-type, and upper flexible panel (4) and lower flexible back plate (5) are leather, resin, plastics, sheet rubber or other flexible materials.
7. the method for making of a flexible piezoelectric keyboard as claimed in claim 1, it is characterized in that: bottom electrode (3) is printed onto on lower flexible back plate (5), piezoelectric membrane (1) is printed onto on bottom electrode (3), it is upper that top electrode (2) is printed onto piezoelectric membrane (1), and upper flexible panel (4) bonds on top electrode (2).
8. the method for making of a flexible piezoelectric keyboard as claimed in claim 1, it is characterized in that: after top electrode (2) and bottom electrode (3) are compounded in to the upper and lower surface of piezoelectric membrane (1), then by piezoelectric membrane complex gummed or be compressed between upper flexible panel (4) and lower flexible back plate (5).
9. the method for making of a kind of flexible piezoelectric keyboard according to claim 8, it is characterized in that: described top electrode (2) and bottom electrode (3) are compounded in the piezoelectric membrane upper and lower surface by methods such as printing, magnetron sputtering, chemical settlings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467430XA CN103472926A (en) | 2013-10-10 | 2013-10-10 | Flexible piezoelectric keyboard and method for manufacturing flexible piezoelectric keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310467430XA CN103472926A (en) | 2013-10-10 | 2013-10-10 | Flexible piezoelectric keyboard and method for manufacturing flexible piezoelectric keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103472926A true CN103472926A (en) | 2013-12-25 |
Family
ID=49797809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310467430XA Pending CN103472926A (en) | 2013-10-10 | 2013-10-10 | Flexible piezoelectric keyboard and method for manufacturing flexible piezoelectric keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103472926A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916773A (en) * | 2014-03-14 | 2015-09-16 | 中国科学院苏州纳米技术与纳米仿生研究所 | Electro-deformation thin film array and preparation method and application thereof |
| CN105930019A (en) * | 2016-07-01 | 2016-09-07 | 京东方科技集团股份有限公司 | Touch screen and display device |
| CN106886293A (en) * | 2017-03-07 | 2017-06-23 | 信利光电股份有限公司 | A kind of touch control keyboard |
| CN112162690A (en) * | 2020-10-23 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Auxiliary keyboard and electronic equipment |
| CN114322827A (en) * | 2021-12-13 | 2022-04-12 | 北京纳米能源与系统研究所 | Non-contact sensor and related method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070342A (en) * | 1979-12-27 | 1981-09-03 | Kureha Chemical Ind Co Ltd | Piezoelectric key-board units |
| EP0933873A1 (en) * | 1998-01-30 | 1999-08-04 | Dynalab AG | Piezoelectric keyboard |
| CN101292216A (en) * | 2005-09-08 | 2008-10-22 | 诺基亚公司 | Multipurpose programmable adjustable keyboard (mpak) |
| CN203520318U (en) * | 2013-10-10 | 2014-04-02 | 昆山攀特电陶科技有限公司 | Flexible piezoelectric keyboard |
-
2013
- 2013-10-10 CN CN201310467430XA patent/CN103472926A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2070342A (en) * | 1979-12-27 | 1981-09-03 | Kureha Chemical Ind Co Ltd | Piezoelectric key-board units |
| EP0933873A1 (en) * | 1998-01-30 | 1999-08-04 | Dynalab AG | Piezoelectric keyboard |
| CN101292216A (en) * | 2005-09-08 | 2008-10-22 | 诺基亚公司 | Multipurpose programmable adjustable keyboard (mpak) |
| CN203520318U (en) * | 2013-10-10 | 2014-04-02 | 昆山攀特电陶科技有限公司 | Flexible piezoelectric keyboard |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916773A (en) * | 2014-03-14 | 2015-09-16 | 中国科学院苏州纳米技术与纳米仿生研究所 | Electro-deformation thin film array and preparation method and application thereof |
| CN104916773B (en) * | 2014-03-14 | 2017-10-20 | 中国科学院苏州纳米技术与纳米仿生研究所 | Electrostrictive membrane array, its preparation method and application |
| CN105930019A (en) * | 2016-07-01 | 2016-09-07 | 京东方科技集团股份有限公司 | Touch screen and display device |
| CN106886293A (en) * | 2017-03-07 | 2017-06-23 | 信利光电股份有限公司 | A kind of touch control keyboard |
| CN112162690A (en) * | 2020-10-23 | 2021-01-01 | 武汉华星光电半导体显示技术有限公司 | Auxiliary keyboard and electronic equipment |
| CN114322827A (en) * | 2021-12-13 | 2022-04-12 | 北京纳米能源与系统研究所 | Non-contact sensor and related method |
| CN114322827B (en) * | 2021-12-13 | 2023-12-01 | 北京纳米能源与系统研究所 | Non-contact sensor and related method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103472926A (en) | Flexible piezoelectric keyboard and method for manufacturing flexible piezoelectric keyboard | |
| CN104535227B (en) | Press-in type dielectric elastomer pressure sensor | |
| CN204808295U (en) | Touch -control display screen and display device | |
| CN102640093B (en) | Printing-type power sensor within touch-screen | |
| CN102339166A (en) | Foldable and flexibly-deformable piezoelectric touch screen | |
| CN102928137B (en) | Four-interdigital-electrode type three-dimensional force contact sensor for artificial skin | |
| CN202486762U (en) | Capacitive touch control panel | |
| US20100283755A1 (en) | Resistive touch panel | |
| CN205121517U (en) | Pressure detection structure and terminal equipment | |
| CN205384596U (en) | Can realize pressure detection's capacitive touch screen and touch device | |
| CN202256381U (en) | Piezoelectric film type acceleration sensor | |
| CN105426008A (en) | Pressure sensing touch display screen and portable electronic product | |
| CN102819351A (en) | Sandwich-type piezoelectric touch screen | |
| CN104808876A (en) | Capacitance type touch panel | |
| CN107037931A (en) | Touching display screen and display device | |
| CN106066712A (en) | Force sensing module | |
| CN203520318U (en) | Flexible piezoelectric keyboard | |
| CN103268181A (en) | Capacitive touch screen module and preparation method thereof | |
| CN103532537A (en) | Piezoelectric keyboard | |
| CN208922224U (en) | A kind of touch device and mobile terminal | |
| CN203838682U (en) | Capacitive touch panel | |
| CN203522700U (en) | Piezoelectric keyboard | |
| CN106843571A (en) | Touch-control sensing component | |
| CN202523033U (en) | Touch control display panel and touch control display device | |
| CN205845026U (en) | Pressure sensitive module and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131225 |
|
| RJ01 | Rejection of invention patent application after publication |