CN103780240A - Integrally covering-layer key - Google Patents
Integrally covering-layer key Download PDFInfo
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- CN103780240A CN103780240A CN201210411496.2A CN201210411496A CN103780240A CN 103780240 A CN103780240 A CN 103780240A CN 201210411496 A CN201210411496 A CN 201210411496A CN 103780240 A CN103780240 A CN 103780240A
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Abstract
The invention discloses an integrally covering-layer key. The integrally covering-layer key includes a piezoelectric electret film, upper surface electrodes which are attached to the upper surface of the piezoelectric electret film, lower surface electrodes which are attached to the lower surface of the piezoelectric electret film, an upper surface encapsulation layer which is encapsulated on the outer layers of the upper surface electrodes, a lower surface encapsulation layer which is encapsulated on the outer layers of the lower surface electrodes, a surface layer which is located on the upper surface encapsulation layer, and upper surface supporting frames which are connected with the upper surface encapsulation layer and are used for supporting the surface layer, a shielding layer which is attached to the outer layer of the lower surface encapsulation layer, a base layer which is located at a bottom layer, and lower surface supporting frames which are connected with the base layer and are used for supporting the above structures. The integrally covering-layer key of the invention is advantageous in no need for slotting performed on each key region, simple structure, reduced assembly processes and decreased production cost.
Description
Technical field
The present invention relates to keyboard technical field, particularly a kind of overall cover layer button.
Background technology
Herein described button refer to for control a circuit whether have the signal of telecommunication to produce or electric signal streams to big or small button, its modal display form is exactly switch.
Existing button can be divided into: separating type key and Integral-type key; Described separating type key is between key zone, to have separate or have gap, and it comprises: the separating type keys such as machinery and silica gel push-button; Extensive use in the family expenses such as remote controller, telephone set, mobile phone, computor-keyboard and personal digital product button, but that it has is easy to wear, the shortcoming such as the life-span is short, and volume is large, complex structure, replaced gradually in modern household electrical equipment and digital product.
Described Integral-type key comprises: film key, electric capacity button and PVDF piezoelectric film key; Wherein, film key is to utilize the closing of contact of upper and lower circuit plate to realize switching function; Film key has the series of advantages such as volume is little, lightweight, complete function, outward appearance novelty, and comply with the requirement of electronic product to multi-functional, miniaturization, densification, intelligent direction development, in numerous consumer electronic products such as intelligent instrument, electronic scale, office automation, Medical Devices, household electrical appliance, be widely applied; But the keystroke dynamics that film key needs is larger, and needs displacement in the time of button, and change in displacement repeatedly can make button produce fatigue rupture.In addition, long-term use key contacts Contact resistance can change, and has affected the stability of button.Electric capacity button is that a pair of adjacent electrode has very little electric capacity between electrode, in the time that a conductor (as finger) approaches two electrodes, between electrode and conductor, can produce a coupling capacitance, and the variation that detects this coupling capacitance can judge switch.Capacitance touch is a kind of induction type button, have be not afraid of wearing and tearing, be not subject to that humiture affects, waterproofing protection and the advantage such as with low cost.Be widely used on the electronic products such as mobile phone, VCD, DVD, electromagnetic oven, lampblack absorber, water heater, washing machine, microwave oven, coffee machine, refrigerator, MP3, MP4, DPF DPF and notebook; But electric capacity button is very high to the requirement of manufacture craft and environment, and be subject to external interference; Electric capacity button adopts active driving, and power consumption is large, is unfavorable for energy-conservation; It can only adopt the conductor touch-controls such as finger (and the hand that can not wet); In addition, when electric capacity button is controlled as sliding, must adopt proprietary draw runner, cause space waste.Chinese utility model patent 200920038727,200920038728,200920038729 has been introduced a kind of novel piezoelectric thin-film button, and it has the advantage such as waterproof, strong interference immunity.But what adopt in above-mentioned patent is PVDF piezoelectric membrane, and its sensitivity (piezoelectric charge coefficients d33 is about 25pC/N) is low, and cost is expensive becomes it and apply limited main cause.In addition, above-mentioned patent adopts and says the mode that piezoelectric membrane separates with FPC lead-out wire, not only complex structure, and increased process costs.
Summary of the invention
The technical problem to be solved in the present invention is:
The technical solution adopted for the present invention to solve the technical problems is:
A kind of overall cover layer button, adopt the force sensing element of piezo-electric electret thin film as button, described piezo-electric electret thin film is an organic film that contains miniature pore space structure, and miniature hole inside configuration stores permanent charge, on described piezo-electric electret thin film, set some key areas, and in described piezo-electric electret thin film upper and lower surface and key area vertical plane position, cover and key area upper surface electrode and lower surface electrode one to one respectively, then respectively the skin of upper and lower surface electrode is carried out to encapsulation process, upper surface encapsulated layer and lower surface encapsulated layer are set respectively, described upper surface encapsulated layer is fixed on surface layer by upper surface support frame, the Support Position of described upper surface support frame is corresponding one by one with described key area respectively, and guarantees that the non-key area between described upper surface encapsulated layer and described surface layer leaves space, described lower surface encapsulated layer skin is also provided with a lower surface screen, described screen is pasted in basic unit by lower surface support frame, and described lower surface support frame is corresponding one by one with the position of described upper surface support frame, and guarantees that the non-key area between described lower surface screen and described basic unit leaves space.
As preferred version, described lower surface electrode is made up of some separate conductive electrodes, and described conductive electrode is drawn by different wires separately; Described upper surface electrode is in series by the some conductive electrodes that adapt with the conductive electrode number of lower surface electrode, is then drawn by a wire.
As preferred version, described lower surface electrode is made up of the conductive electrode group of some groups of longitudinal arrangements, and each conductive electrode group is in series by some transversely arranged conductive electrodes again, and each conductive electrode group is drawn by a wire respectively; Described upper surface electrode is made up of some groups of transversely arranged conductive electrode groups, and each conductive electrode group is in series by the conductive electrode of some longitudinal arrangements again, and each conductive electrode group is drawn by a wire respectively, the quantity of the conductive electrode of the quantity of the conductive electrode group of described upper surface electrode and the each conductive electrode group of described lower surface electrode adapts, and the quantity of conductive electrode in each conductive electrode group of described upper surface electrode and the quantity of the conductive electrode group of described lower surface electrode adapt.
As preferred version, described upper surface electrode is made up of whole piece conductive electrode, and is drawn by wire, and the overlay area of the overlay area >=lower surface electrode of described upper surface electrode.
As preferred version, between described upper surface encapsulated layer and described upper surface support frame, be also provided with a upper surface screen, the specification of described upper surface screen and the specification of described upper surface electrode adapt, and adopt whole metal level or metal grill.
As preferred version, the specification of described lower surface screen and the specification of described lower surface electrode adapt, and adopt whole metal level or metal grill.
As preferred version, described upper and lower surface support frame adopts double faced adhesive tape, machine film, plastics or metal to make, between described upper and lower surface support frame, be also provided with an isolating frame, described isolating frame adopts double faced adhesive tape, machine film, plastics or metal to make, and the hardness of the hardness of described isolating frame >=upper and lower support frame.
As preferred version, described surface layer adopts metal, glass, wood, plastics or organic film material to make, or employing display screen, described display screen adopts OLED display screen, E-link display screen or LCD display, described basic unit adopts metal, plastics, pcb board, wood or glass material to make, and the hardness of the hardness >=surface material of described base material, described upper and lower surface encapsulated layer is all an organic film.
The invention has the beneficial effects as follows: the present invention possesses following advantage with respect to conventional keys: the present invention does not need each key area fluting, simple in structure, reduce packaging technology, reduce production costs, and surface cleaning is convenient in the present invention, under the occasion of easily polluting at button, under the occasion such as (as household cookware), apply, have more advantage, surface of the present invention can covering metal, glass, wood, plastics, organic film, OLED, E-link, the thicker materials such as display such as LCD are as cover layer, have very strong explosion-proof, waterproof, dustproof, anti-electromagnetic interference capability, physical life is long, be widely used at common electronic equipment and military equipment.
Accompanying drawing explanation
Fig. 1 is a kind of overall cover layer press-key structure one;
Fig. 2 is the specification one of lower surface electrode;
Fig. 3 is the specification two of lower surface electrode;
Fig. 4 is the specification one of upper surface electrode;
Fig. 5 is the specification two of upper surface electrode;
Fig. 6 is the specification three of upper surface electrode;
Fig. 7 is the specification of screen;
Fig. 8 is a kind of overall cover layer press-key structure two;
Fig. 9 is a kind of overall cover layer press-key structure three.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.
Embodiment 1: in conjunction with Fig. 1, a kind of overall cover layer button, comprise piezo-electric electret thin film 1, be attached to the upper surface electrode 3 of piezo-electric electret thin film 1 upper surface, be attached to the lower surface electrode 2 of piezo-electric electret thin film 1 lower surface, be encapsulated in the outer field upper surface encapsulated layer 11 of upper surface electrode 3 and lower surface electrode 2 and lower surface encapsulated layer 4, be positioned at the surface layer 8 above upper surface encapsulated layer, and be connected with upper surface encapsulated layer 11 for supporting the upper surface support frame 6 of surface layer 8, be attached to the outer field screen 5 of lower surface encapsulated layer 4, be positioned at the basic unit 8 of bottom, and be connected with basic unit 8 for supporting the lower surface support frame 7 of above structure.
Described piezo-electric electret thin film 1 is for also claiming ferroelectret Ferroelectret) be the thin polymer film of a kind of inside containing nonpolar microcellular structure, after processing, suitable electric polarization can present higher piezoelectric property, (piezoelectric charge coefficients d33) is higher in sensitivity, compared with about Gao Shikeda 400pC/N, it not only have high sensitivity, lightweight ultra-thin, can large area film forming, cheap environmental protection, size can arbitrarily cut out and also with the advantage such as the acoustic matching of air, water, human body is good.
Described lower surface electrode 2, as shown in Figure 2, be made up of, and described conductive electrode is drawn by wire 22 separately 3 separate conductive electrodes 21.
Described upper surface electrode 3, as shown in Figure 4, is in series by 3 transversely arranged conductive electrodes 31, is then drawn by a wire 32.
Covering metal conductive layer is as screen outside lower surface encapsulated layer to adopt technique for vacuum coating, and for increasing the anti-electromagnetic interference capability of button assembly, described screen 5 adopts metal grill or whole metal level, as shown in Figure 7.
Described upper and lower surface support frame 6 and 7 adopts double faced adhesive tape, organic film, plastics or metal to make.
Described surface layer 8 adopts metal, glass, wood, plastics or organic film material to make, or adopts display screen, and described display screen adopts OLED display screen, E-link display screen or LCD display.
Described basic unit 9 adopts the materials such as metal, plastics, pcb board, wood or glass to make, and the hardness of the hardness >=surface material of described base material.
Embodiment 2: another embodiment of the invention, overall layer structure is identical with embodiment 1, and difference is:
Described lower surface electrode 2, as shown in Figure 3, is made up of the conductive electrode group of two groups of longitudinal arrangements, and each conductive electrode group is in series by 3 transversely arranged conductive electrodes 21 again, and each conductive electrode group is drawn by a wire 22 respectively.
Described upper surface electrode 3, as shown in Figure 5, is made up of 3 groups of transversely arranged conductive electrode groups, and each conductive electrode group is in series by the conductive electrode 31 of two longitudinal arrangements again, and each conductive electrode group is drawn by a wire 32 respectively.
Embodiment 3: another embodiment of the invention, on the basis of embodiment 1 or embodiment 2, by upper surface electrode 3 structural modifications for to be formed by whole piece conductive electrode 31, and drawn by wire 32, as shown in Figure 6, and the overlay area of the overlay area >=lower surface electrode 2 of described upper surface electrode 3.
Embodiment 4: another embodiment of the invention is on the basis of embodiment 1, embodiment 2 or embodiment 3, adds a screen 10, as shown in Figure 8 at the skin of described upper surface encapsulated layer 11.
Embodiment 5: another embodiment of the invention, on the basis of embodiment 1, embodiment 2, embodiment 3 or embodiment 4, between described upper and lower surface support frame, be also provided with an isolating frame 12,13, isolating frame 12,13 adopts double faced adhesive tape, organic film, plastics or metal to make, the hardness of the hardness >=upper and lower support frame of described isolating frame, the effect of upper and lower support frame is for transmission power, and isolating frame can effectively prevent the phase mutual interference in power transmittance process between support frame.What Fig. 9 showed is the structural representation on embodiment 1 basis.
More than show principal character and the innovative point of only having described this programme.Those skilled in the art should understand, and this programme is not restricted to the described embodiments.Do not departing under the prerequisite of the innovation point and protection range, this programme also has various variations, and these changes and improvements all will fall in the claimed scope of this programme.The claimed scope of this programme is limited by appending claims and equivalent thereof.
Claims (10)
1. an overall cover layer button, it is characterized in that: adopt the force sensing element of piezo-electric electret thin film as button, described piezo-electric electret thin film is an organic film that contains miniature pore space structure, and miniature hole inside configuration stores permanent charge, on described piezo-electric electret thin film, set some key areas, and in described piezo-electric electret thin film upper and lower surface and key area vertical plane position, cover and key area upper surface electrode and lower surface electrode one to one respectively, then respectively the skin of upper and lower surface electrode is carried out to encapsulation process, upper surface encapsulated layer and lower surface encapsulated layer are set respectively, described upper surface encapsulated layer is fixed on surface layer by upper surface support frame, the Support Position of described upper surface support frame is corresponding one by one with described key area respectively, and guarantees that the non-key area between described upper surface encapsulated layer and described surface layer leaves space, described lower surface encapsulated layer skin is also provided with a lower surface screen, described screen is pasted in basic unit by lower surface support frame, and described lower surface support frame is corresponding one by one with the position of described upper surface support frame, and guarantees that the non-key area between described lower surface screen and described basic unit leaves space.
2. the overall cover layer button of one as claimed in claim 1, is characterized in that: described lower surface electrode is made up of some separate conductive electrodes, and described conductive electrode is drawn by different wires separately.
3. the overall cover layer button of one as claimed in claim 2, is characterized in that: described upper surface electrode is in series by the some conductive electrodes that adapt with the conductive electrode number of lower surface electrode, is then drawn by a wire.
4. the overall cover layer button of one as claimed in claim 1, it is characterized in that: described lower surface electrode is made up of the conductive electrode group of some groups of longitudinal arrangements, and each conductive electrode group is in series by some transversely arranged conductive electrodes again, and each conductive electrode group is drawn by a wire respectively.
5. the overall cover layer button of one as claimed in claim 4, it is characterized in that: described upper surface electrode is made up of some groups of transversely arranged conductive electrode groups, and each conductive electrode group is in series by the conductive electrode of some longitudinal arrangements again, and each conductive electrode group is drawn by a wire respectively, the quantity of the conductive electrode of the quantity of the conductive electrode group of described upper surface electrode and the each conductive electrode group of described lower surface electrode adapts, the quantity of conductive electrode in each conductive electrode group of described upper surface electrode and the quantity of the conductive electrode group of described lower surface electrode adapt.
6. the entirety of the one as described in claim 2 or 4 cover layer button, is characterized in that: described upper surface electrode is made up of whole piece conductive electrode, and is drawn by wire, and the overlay area of the overlay area >=lower surface electrode of described upper surface electrode.
7. the overall cover layer button of one as claimed in claim 1, it is characterized in that: between described upper surface encapsulated layer and described upper surface support frame, be also provided with a upper surface screen, the specification of described upper surface screen and the specification of described upper surface electrode adapt, and adopt whole metal level or metal grill.
8. the overall cover layer button of one as claimed in claim 1, is characterized in that: the specification of described lower surface screen and the specification of described lower surface electrode adapt, and adopts whole metal level or metal grill.
9. the overall cover layer button of one as claimed in claim 1, it is characterized in that: described upper and lower surface support frame adopts double faced adhesive tape, machine film, plastics or metal to make, between described upper and lower surface support frame, be also provided with an isolating frame, described isolating frame adopts double faced adhesive tape, machine film, plastics or metal to make, and the hardness of the hardness of described isolating frame >=upper and lower support frame.
10. the overall cover layer button of one as claimed in claim 1, it is characterized in that: described surface layer adopts metal, glass, wood, plastics or organic film material to make, or employing display screen, described display screen adopts OLED display screen, E-link display screen or LCD display, described basic unit adopts metal, plastics, pcb board, wood or glass material to make, and the hardness of the hardness >=surface material of described base material, described upper and lower surface encapsulated layer is all an organic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411496.2A CN103780240B (en) | 2012-10-25 | 2012-10-25 | A kind of overall cover layer button |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210411496.2A CN103780240B (en) | 2012-10-25 | 2012-10-25 | A kind of overall cover layer button |
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| Publication Number | Publication Date |
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| CN103780240A true CN103780240A (en) | 2014-05-07 |
| CN103780240B CN103780240B (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210411496.2A Active CN103780240B (en) | 2012-10-25 | 2012-10-25 | A kind of overall cover layer button |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160722A (en) * | 2016-07-26 | 2016-11-23 | 广东美的厨房电器制造有限公司 | The press-key structure of household electrical appliance and household electrical appliance |
| CN109861681A (en) * | 2019-01-31 | 2019-06-07 | 科世达(上海)机电有限公司 | A kind of assembly tooling of capacitance touching control equipment and its capacitive window |
| CN111081164A (en) * | 2019-12-30 | 2020-04-28 | 杭州电子科技大学 | Passive electronic road directing device based on energy collector |
| 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 |
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| CN202889319U (en) * | 2012-10-25 | 2013-04-17 | 贝辛电子科技（上海）有限公司 | Press key with integral covering layer |
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| JP2002101497A (en) * | 2000-09-21 | 2002-04-05 | Matsushita Electric Ind Co Ltd | Electret condenser microphone and its manufacturing method |
| US20090021354A1 (en) * | 2004-08-25 | 2009-01-22 | Hidetaka Furusho | Input device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160722A (en) * | 2016-07-26 | 2016-11-23 | 广东美的厨房电器制造有限公司 | The press-key structure of household electrical appliance and household electrical appliance |
| CN106160722B (en) * | 2016-07-26 | 2019-04-30 | 广东美的厨房电器制造有限公司 | The press-key structure and household electrical appliance of household electrical appliance |
| CN109861681A (en) * | 2019-01-31 | 2019-06-07 | 科世达(上海)机电有限公司 | A kind of assembly tooling of capacitance touching control equipment and its capacitive window |
| CN111081164A (en) * | 2019-12-30 | 2020-04-28 | 杭州电子科技大学 | Passive electronic road directing device based on energy collector |
| 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 |
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| CN103780240B (en) | 2016-11-16 |
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