CN101425800A - Keyboard for portable apparatus - Google Patents
Keyboard for portable apparatus Download PDFInfo
- Publication number
- CN101425800A CN101425800A CNA2007101656997A CN200710165699A CN101425800A CN 101425800 A CN101425800 A CN 101425800A CN A2007101656997 A CNA2007101656997 A CN A2007101656997A CN 200710165699 A CN200710165699 A CN 200710165699A CN 101425800 A CN101425800 A CN 101425800A
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- portable apparatus
- keyboard
- circuit board
- vacuum plating
- conductive vacuum
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Abstract
The invention discloses a keyboard of a portable device, which is provided with at least one key area. The keyboard of a portable device comprises at least one capacitance-type sensing switch corresponding to the key area and comprising a circuit board, wherein one surface of the circuit board is provided with at least one electric sensing pad. A non-conductive vacuum metalizing film is arranged above the surface of the circuit board, and an insulation shell is clamped between the surface of the circuit board and the non-conductive vacuum metalizing film.
Description
Technical field
The present invention relates to a kind of keyboard of portable apparatus, particularly relate to a kind of keyboard with the capacitive induction switch that is constituted by non-conductive vacuum plating layer.
Background technology
At present, at some electronic products, for example in the surface treatment of portable electronic devices such as mobile phone,, generally can utilize traditional plating (Electroplating) technology, with depositing metal films on the surface of these electronic products if want exhibit metallic texture.The principle of traditional electrical coating technology is by electrode (Electrode) being applied electric current, being attached on the surface of electronic product so as to making the metallic deposition.Because the needs of electroplating technology flow process, the material that electroplate all is the metal of conductivity, therefore after plating, attached to the lip-deep metallic of the casing of electronic product, also can form the coating of one deck conduction.
For instance, please refer to Fig. 1, in the time of will forming metal coatings 106 on the surface 102 of the casing 100 of electronic product, because casing 100 is generally nonconducting plastic products, therefore the common adhesion coating 104 of wanting to cover earlier on the plate surface 102 one deck conduction at casing 100 is in order to the carrying out of follow-up metal plating.Then, utilizing electroplating technology to form metal coating 106 again covers on the adhesion coating 104.In the formed metal coating 106 of utilization traditional electrical coating technology, all metallics 108 adjoin each other and tight stack arrangement, as shown in Figure 1.Therefore, electric current 110 can be via the conduction of the metallic 108 of these conductions, and circulation in metal coating 106.So, utilize the formed metal coating 106 of traditional electrical coating technology all to have the characteristic of conduction.
On the other hand, capacitive induction switch (Capacitive Touch Sensor) is a kind of mode of utilizing electric capacity (Capacitance) induction, and the touching that comes human body whether.The principle of capacitive induction switch is to produce a capacitance on the casing of electronic product, and because human body is a conductor, therefore when the user touches casing, can make on the casing capacitance originally change, and after transducer receives the signal that variation produced corresponding to the case capacitance value, can judge the user and whether touch casing.
In the application of capacitive induction switch, casing must be kept capacitance itself, so casing itself can not be conductor, and the material of general casing mostly is plastics, so be not conductor and do not have the problem of this respect.But,,, so, can destroy the effect of capacitive induction because formed electrodeposited coating can conduct electricity if utilize the traditional electrical coating technology to come casing is carried out the surface-treated words.Therefore, if will use the condenser type inductive switch, just can't use the traditional electrical coating technology to carry out the surface treatment on casing surface.
Summary of the invention
The object of the present invention is to provide a kind of keyboard of portable apparatus, it uses non-conductive vacuum plating (Non Conductive Vacuum Metallization; NCVM) mode forms the electrode layer of electric capacity on casing, therefore can produce the capacitive induction switch smoothly on casing.
Another object of the present invention is to provide a kind of keyboard of portable apparatus, have the capacitive induction switch, help the appearance design of portable apparatus, increase the variability of product appearance.
To achieve these goals, the invention provides a kind of keyboard of portable apparatus, be provided with a key zone, the keyboard of this portable apparatus comprises at least one capacitive induction switch, corresponding to the aforementioned keys district.This capacitive induction switch comprises: a circuit board, and wherein a surface of circuit board is provided with at least one electrical sensing pad; One non-conductive vacuum plating film is located at the top on the surface of aforementioned circuit plate; And one insulation crust be folded between the surface and non-conductive vacuum plating film of aforementioned circuit plate.
According to a preferred embodiment of the present invention, above-mentioned non-conductive vacuum plating film is provided with a pattern, and the function in the corresponding display button of this pattern district.
In one embodiment, the pattern of above-mentioned non-conductive vacuum plating film is a laser carved pattern.
From the above, the keyboard of portable apparatus of the present invention can be produced the good capacitive induction switch of inductive effects smoothly on casing, be exactly because the keyboard of portable apparatus has the capacitive induction switch in addition, help the appearance design of portable apparatus, increase the variability of product appearance.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 illustrates the generalized section that forms traditional electroplated film disk on casing;
Fig. 2 is the plated film schematic diagram that illustrates a kind of non-conductive vacuum plating;
Fig. 3 is the generalized section that illustrates according to the keyboard of a kind of portable apparatus of a preferred embodiment of the present invention.
Wherein, Reference numeral:
100: casing 102: surface
104: adhesion coating 106: metal coating
108: metallic 110: electric current
200: substrate 202: surface
204: adhesion coating 206: metallic
208: space 210: metal coating
212: keyboard 214: circuit board
216: surface 218: electrical sensing pad
220: insulation crust 222: non-conductive vacuum plating film
224: pattern 226: key zone
228: the capacitive induction switch
Embodiment
The present invention discloses a kind of keyboard of portable apparatus.In order to make narration of the present invention more detailed and complete, can and cooperate that Fig. 2 and Fig. 3's is graphic with reference to following description.
Please refer to Fig. 2, it is the plated film schematic diagram that illustrates a kind of non-conductive vacuum plating.Use non-conductive vacuum plating process flow process in nonconducting substrate 200, for example on the casing of electronic installation, when forming metal coating 210, at the nonconducting adhesion coating 204 of formation on the coated surface 202 of wanting of substrate 200, can grow up smoothly on the surface 202 of substrate 200 earlier in order to follow-up metal coating 210.Wherein, because adhesion coating 204 is non-conductive, can avoid follow-up formed metal coating 210 to produce conductive effect by adhesion coating 204.Then, utilize non-conductive vacuum plating technology, form metal coating 210 on adhesion coating 204.Non-conductive vacuum plating technology can change the arrangement mode of the plated metal particle 206 in the formed metal coating 210, and produces space 208 in the arrangement of metallic 206, and then electric current can't be circulated at whole metal coating 210.Therefore, formed metal coating 210 has the texture of plated metal, but does not have the characteristic of conduction.
Therefore, an example embodiment of the present invention is exactly to utilize the non-conductive characteristic of non-conductive vacuum plating film, makes the capacitive induction switch of the keyboard of portable apparatus, adopts traditional plating mode and the problem of the capacitive induction switch failure that causes with solution.The keyboard mechanism that has the portable apparatus of capacitive induction switch designs like this comprises input units such as the button of portable apparatus, roller or slip button.
Please refer to Fig. 3, it is the generalized section that illustrates according to the keyboard of a kind of portable apparatus of a preferred embodiment of the present invention.In the keyboard 212 of portable apparatus, be provided with one or more key zone 226, can be by touching this one or more key zone 226 to the portable apparatus input instruction, and make this portable apparatus provide user's input instruction pairing function.Portable apparatus can be general common electronic products such as mobile phone, PDA(Personal Digital Assistant), digital camera, digital audio-video player or notebook.
The keyboard 212 of portable apparatus comprises one or more capacitive induction switch 228, wherein each key zone 226 correspondence is provided with a capacitive induction switch 228, and whether the induction by this capacitive induction switch 228 can make the control system of portable apparatus judge the user has by touching this key zone 226.Capacitive induction switch 228 comprises circuit board 214, insulation crust 220 and non-conductive vacuum plating film 222 at least, wherein circuit board 214 is located at the below of insulation crust 220, non-conductive vacuum plating film 222 then is located at the top of insulation crust 220, so that insulation crust 220 is folded between the surface 216 and non-conductive vacuum plating film 222 of circuit board 214.Insulation crust 220 is the shell of portable apparatus, and wherein the material of plastic casing 220 adopts plastic material usually.
Be preset with a circuit layout on the circuit board 214, and this circuit layout comprises that also at least one electrical sensing pad 218 is located in the surface 216 of circuit board 214, wherein the electrical sensing pad 218 of circuit board 214, insulation crust 220 constitute capacitance structure with non-conductive vacuum plating film 222, and produce a capacitance on the shell of portable apparatus.The circuit layout of circuit board 214 can electrically connect with the control chip of portable apparatus, is passed to control chip with the signal of the capacitance variation that will be sensed by electrical sensing pad 218.In an example embodiment, can a plurality of capacitive induction switches 228 corresponding to a circuit board 214, and the surface 216 of this circuit board 214 is provided with several electrical sensing pads 218, and wherein each capacitive induction switch 228 is at least corresponding to one of them of these electrical sensing pads 218.In another example embodiment, can a capacitive induction switch 228 corresponding to a circuit board 214, just each capacitive induction switch 228 has the outfit of a circuit board 214.In one embodiment, circuit board 214 can be printed circuit board (PCB).
Non-conductive vacuum plating film 222 is for utilizing the non-conducting metal film on the non-conductive vacuum plating insulation crust that technology is deposited on 220.In an example embodiment, the material of non-conductive vacuum plating film 222 can for example be tin (Sn), aluminium (Al), copper (Cu), chromium (Cr), nickel (Ni) or titanium metals such as (Ti).Please refer again to Fig. 2, utilize in the formed non-conductive vacuum plating film 222 of non-conductive vacuum plating technology, as metal coating 210, there is the space to produce in it in the arrangement of metallic, thereby electric current can't be circulated in whole non-conductive vacuum plating film 222, therefore non-conductive vacuum plating film 222 only has the texture of plated metal but is non-conductive.In one embodiment, non-conductive vacuum plating film 222 also can optionally be provided with pattern 224 according to product demand, and wherein this pattern 224 can show the function of corresponding key zone 226, for example the numerical key of mobile phone, text button or other function key.The pattern 224 of non-conductive vacuum plating film 222 can be molded in the non-conductive vacuum plating film 222 by the non-conductive vacuum plating film 222 that removes part.In one embodiment, can utilize for example laser engraving mode, remove the non-conductive vacuum plating film 222 of part, to carve out designed pattern 224 at non-conductive vacuum plating film 222, wherein the pattern 224 that goes out of laser engraving can be pattern that engraved structure defines, just the part surface of insulation crust 220 is exposed behind laser engraving, as shown in Figure 3.But in another embodiment, pattern 224 also can be pattern that non-engraved structure defines, and just the surface of insulation crust 220 is not exposed behind the laser engraving.
Because, the material of non-conductive vacuum plating film 222 is the top electrode that conductor can be used as capacitive induction switch 228, add non-conductive vacuum plating film 222 and be the non-conductive characteristic of discontinuous construction tool, and then can effectively be maintained the capacitance that is created in shell originally, can not destroy the capacitive sensing effect of capacitive induction switch 228.Therefore, when the user touches the non-conductive vacuum plating film 222 of capacitive induction switch 228, be subjected to the influence that human body is a conductor, can make originally exists the capacitance of the shell of portable apparatus to change, that is generation capacitive sensing effect, such capacitance variation is via electrical sensing pad 218 inductions of circuit board 214, and the then corresponding signal that produces is passed to the control chip of portable apparatus, and makes portable apparatus induce the touch action of user to shell.So, use example embodiment of the present invention, the capacitive induction switch on the surface of tool metal material can be set on portable apparatus smoothly.
By above-mentioned example embodiment as can be known, the advantage of an example embodiment of the present invention is exactly because the non-conductive vacuum plating mode of keyboard applications of portable apparatus forms the electrode layer of electric capacity on casing, therefore can on casing, produce the good capacitive induction switch of inductive effects smoothly, be exactly because the keyboard of portable apparatus has the capacitive induction switch in addition, help the appearance design of portable apparatus, increase the variability of product appearance.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (7)
1, a kind of keyboard of portable apparatus is provided with at least one key zone, it is characterized in that, the keyboard of this portable apparatus comprises:
At least one capacitive induction switch, corresponding to this key zone, this capacitive induction switch comprises:
One circuit board, wherein a surface of this circuit board is provided with at least one electrical sensing pad;
One non-conductive vacuum plating film is located at the top on this surface of this circuit board; And
One insulation crust is folded between this surface and this non-conductive vacuum plating film of this circuit board.
2, the keyboard of portable apparatus according to claim 1 is characterized in that, the material of this non-conductive vacuum plating film is tin, aluminium, copper, chromium, nickel or titanium.
3, the keyboard of portable apparatus according to claim 1 is characterized in that, the material of this insulation crust is plastics.
4, the keyboard of portable apparatus according to claim 1 is characterized in that, this circuit board is a printed circuit board (PCB).
5, the keyboard of portable apparatus according to claim 1 is characterized in that, this non-conductive vacuum plating film is provided with a pattern, the corresponding function that shows this key zone of this pattern.
6, the keyboard of portable apparatus according to claim 5 is characterized in that, this pattern is a laser carved pattern.
7, the keyboard of portable apparatus according to claim 1 is characterized in that, this portable apparatus is a mobile phone, a personal digital assistant, a digital camera, a digital audio-video player or a notebook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101656997A CN101425800A (en) | 2007-10-31 | 2007-10-31 | Keyboard for portable apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101656997A CN101425800A (en) | 2007-10-31 | 2007-10-31 | Keyboard for portable apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101425800A true CN101425800A (en) | 2009-05-06 |
Family
ID=40616179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101656997A Pending CN101425800A (en) | 2007-10-31 | 2007-10-31 | Keyboard for portable apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101425800A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809420A (en) * | 2012-07-26 | 2012-12-05 | 奥豪斯仪器（常州）有限公司 | Capacitive keyboard of electronic scale and anti-interference detecting method for capacitive keyboard |
| CN104202030A (en) * | 2014-08-15 | 2014-12-10 | 上海新时达电气股份有限公司 | Capacitive sensitive type key |
| CN108572737A (en) * | 2017-03-10 | 2018-09-25 | 上海敏传智能科技有限公司 | A kind of waterproof induction keyboard |
-
2007
- 2007-10-31 CN CNA2007101656997A patent/CN101425800A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809420A (en) * | 2012-07-26 | 2012-12-05 | 奥豪斯仪器（常州）有限公司 | Capacitive keyboard of electronic scale and anti-interference detecting method for capacitive keyboard |
| CN102809420B (en) * | 2012-07-26 | 2015-04-01 | 奥豪斯仪器（常州）有限公司 | Capacitive keyboard of electronic scale and anti-interference detecting method for capacitive keyboard |
| CN104202030A (en) * | 2014-08-15 | 2014-12-10 | 上海新时达电气股份有限公司 | Capacitive sensitive type key |
| CN108572737A (en) * | 2017-03-10 | 2018-09-25 | 上海敏传智能科技有限公司 | A kind of waterproof induction keyboard |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20090506 |