CN102006047A - Key detecting board - Google Patents
Key detecting board Download PDFInfo
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- CN102006047A CN102006047A CN 201010575705 CN201010575705A CN102006047A CN 102006047 A CN102006047 A CN 102006047A CN 201010575705 CN201010575705 CN 201010575705 CN 201010575705 A CN201010575705 A CN 201010575705A CN 102006047 A CN102006047 A CN 102006047A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
Abstract
A key detecting board comprises a body and a plurality of detecting keys, wherein the body is at least provided with two surfaces connected with each other; the detecting keys are positioned on the first surface of the body; the first surface of the body is the surface of the metal wiring surface which is paralleled with each other; the detecting keys are also positioned on the second surface of the body; and the first surface and the second surface are the two connected surfaces of the body. The key detecting board provided by the invention has high resolving precision and diverse functions.
Description
Technical field
The present invention relates to the touch field, particularly a kind of button detecting plate.
Background technology
Along with the continuous development of electronic technology, button is fast owing to its reaction, application is wide, adapt to adverse circumstances is widely used in household electrical appliance or the consumer electronic product, thereby the chance that the user uses button to operate is also more and more.For example, the user can call or editing short message by the keyboard of portable terminal, and the button by television set carries out television channel to be selected, and the button by DVD carries out F.F., retreat or the selection of volume or the like.
Number of patent application is to disclose a kind of capacitance key of responding to user's finger contacts in the United States Patent (USP) of US2005/0179673A1, existing capacitance key generally includes button detecting plate and detects the corresponding keyboard of version with button, please refer to Fig. 1, Fig. 1 is existing button schematic diagram, comprise: keyboard 10, described keyboard 10 is used to receive user instruction, described keyboard 10 surfaces have prompting user's diagram or literal usually, for example begin or begin diagram, the diagram of advancing or advance, the diagram that stops or stopping ...; Button detecting plate 20, when the diagram on user touching or some beating keyboard 10 surfaces or literal, the user instruction that the detecting keyboard receives, and user instruction is converted to working signal transfers to the process chip (not shown) that is connected with button detecting plate 20, described button detecting plate 20 comprises plate body 21 and detecting key 22, and described plate body 21 is generally printed circuit board (PCB) (Printed Circuit Board; PCB) or flexible print circuit (Flexible Printed Circuit; FPC) plate, described plate body 21 provides platform for carrying detecting key 22 and for process chip provides interface, described detecting key 22 is positioned at the surface of plate body 21, is used to detect keyboard and receives user instruction, and transmit described working signal.
But, along with further developing of electronic technology, the user of existing button detecting plate need touch the diagram or the literal on keyboard 10 surfaces and could work, and be in high temperature or other maximal work environment can't be suitable at keyboard 10, and existing button detecting plate antijamming capability is relatively poor, can't satisfy the era development requirement.
Summary of the invention
The problem that the present invention solves provides a kind of new button detecting plate, can simplify button and judge the process of identification, the solution keyboard is in high temperature or other maximal work environment can't application and the relatively poor poor anti jamming capability problem of button detecting plate antijamming capability.
For addressing the above problem, the invention provides a kind of button detecting plate, comprising: plate body, described plate body have two interconnected at least; A plurality of detecting keys, described detecting key is positioned at described plate body first surface, and described plate body first surface is the surface that is parallel to the metal line face; Described detecting key also is positioned at described plate body second surface, and described first surface is two surfaces that are connected of plate body with second surface.
When button detecting plate of the present invention and keyboard assembling, the detecting key has a face all the time perpendicular to keyboard, make when the user points the key of a touching dish, pointing the detecting key corresponding with the key of keyboard remains vertical, when the detecting keyed jointing of correspondence is received working signal, the vertical all the time corresponding detecting key of working signal improves the resolution of button detecting plate, thereby improves the antijamming capability of button.
Further, button detecting plate of the present invention can also be as the detecting antenna of process chip, material by selection key detecting plate, setting is positioned at the plain conductor trend and the thickness of button detecting plate, the arrangement of detecting key and the arrangement of thickness and port, make button detecting plate can survey the frequency of setting the first frequency section, and material by selection key detecting plate, setting is positioned at the plain conductor trend and the thickness of button detecting plate, the arrangement of detecting key and the arrangement of thickness and port, make user's point touch and be fixed on the second frequency section, reduce the analysis difficulty of analysis chip.
Further, the periphery of the part of the detecting key of the recessed described second surface of the present invention is an arc, and the focus of described arcwall face is put the contact for the user.
Make the user put the focus that the connection terminals contact is positioned at arcwall face when touching, further improve the antijamming capability that button is detected the resolution of plate and improved button.
Further, the part that is positioned at second surface of detecting key of the present invention is more recessed than described second surface, and the periphery of the part of the detecting key of recessed described second surface is an arc.Reduce the amount of calculation that the microcontroller (MCU, Micro Controller Unit) that is connected with button detecting plate calculates the signal variation of detecting key, promptly detect the change in electrical charge amount of calculation of key, thereby improve button reaction speed and resolution.
Further, the zigzag of described plate body for interlocking and constitute by protuberance and recess, described detecting key is positioned at the first surface of protuberance of described plate body and the second surface that is positioned at protuberance, said structure not only reduces the amount of calculation that the microcontroller that is connected with button detecting plate calculates the signal variation of detecting key, promptly detect the change in electrical charge amount of calculation of key, thereby improve button reaction speed and resolution; And have air as partition between detecting key and the adjacent detecting key, make that detecting the degree that key disturbed reduces greatly, further improves button resolution.
Description of drawings
Fig. 1 is existing button schematic diagram;
Fig. 2 is the button detecting plate first embodiment schematic diagram of the present invention;
Fig. 3 is the button detecting plate second embodiment schematic diagram of the present invention;
Fig. 4 is button detecting plate the 3rd embodiment schematic diagram of the present invention;
Fig. 5 is button detecting plate the 4th embodiment schematic diagram of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, the specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Set forth detail in the following description so that fully understand the present invention.But the present invention can be different from alternate manner described here and implements with multiple, and those skilled in the art can do similar popularization under the situation of intension of the present invention.Therefore the present invention is not subjected to the restriction of following public embodiment.
The present inventor has proposed the imagination of air touch key-press based on many defectives of existing capacitive touch screen and RM thereof.Make when carrying out touch operation that by making up special membrane keyboard structure operator's finger can need not to touch actual touch-screen or keyboard.And, based on described membrane keyboard structural design accordingly to the supply power mode and the touch identification method of membrane keyboard structure, so that touch operation is discerned more accurately.Concrete air touch key-press structure comprises: keyboard; The detecting plate, has the corresponding detecting key of key position a plurality of and keyboard on the described detecting plate, described detecting plate and the insulation of described keyboard are isolated, when using, the user touches key dish or near keyboard the time corresponding to having triggering signal, be positioned on the detecting plate or described triggering signal is carried out discriminatory analysis with the analytical test chip that is connected of detecting plate interface, determine which button is triggered and trigger corresponding function, but find under study for action, adopt existing detecting plate structure in the processing procedure of carrying out the button judgement, amount of calculation is bigger, the button identifying is longer, analytical test chip amount of calculation is big, the power consumption that causes the analytical test chip, committed memory is big, and at this problem, the present inventor has proposed improvement to press-key structure.
For this reason, the present inventor proposes a kind of button detecting plate of optimization, and comprising: plate body, described plate body have two interconnected at least; A plurality of detecting keys, described detecting key is positioned at described plate body first surface, and described plate body first surface is the surface that is parallel to the metal line face; Described detecting key also is positioned at described plate body second surface, and described first surface is two surfaces that are connected of plate body with second surface.
Described plate body is ito thin film, conductive film, printed circuit board (PCB) or flexible printed circuit board, described plate body also comprises and is positioned at plate body or plate body plain conductor surperficial, that link to each other with the detecting key, be positioned at plate body, by plain conductor and the port that links to each other of detecting key, described port is used for the connection processing chip.
When button detecting plate of the present invention and keyboard assembling, described button detecting plate can assemble at any angle and between the keyboard, cooperates with described keyboard such as 0～180 ° of orientation.Optimally, can make the detecting key of described button detecting plate a face be arranged perpendicular to keyboard, make when the user points the key of a touching dish, pointing the detecting key corresponding with the key of keyboard remains vertical, when the detecting keyed jointing of correspondence is received working signal, the vertical all the time corresponding detecting key of working signal improves the resolution of button detecting plate, thereby improves the antijamming capability of button.
Button detecting plate of the present invention can be applicable to the contact button, particularly the capacitive touch button; The present invention also be applicable to the air type button or, described air type button be meant human body not can with the button of the detecting key contacts of detecting on the plate.
Further, button detecting plate of the present invention can also be as the detecting antenna of process chip, material by selection key detecting plate, setting is positioned at the plain conductor trend and the thickness of button detecting plate, the arrangement of detecting key and the arrangement of thickness and port, make button detecting plate can survey the frequency of setting the first frequency section, and material by selection key detecting plate, setting is positioned at the plain conductor trend and the thickness of button detecting plate, the arrangement of detecting key and the arrangement of thickness and port, make user's point touch and be fixed on the second frequency section, reduce the analysis difficulty of analysis chip.
Below in conjunction with a specific embodiment button detecting plate of the present invention is elaborated.
Please refer to Fig. 2, Fig. 2 is the button detecting plate first embodiment schematic diagram of the present invention, comprising:
Detecting key 101, be used to detect keyboard (not shown) and receive user instruction (be user put touch), and user instruction is converted to working signal, working signal transfers to the process chip (not shown) that is connected with interface 102 by plain conductor 103, described detecting key 101 is a sheet metal, in the present embodiment, be preferably Copper Foil.Described detecting key 101 is positioned at working face I and proximal surface II, consider that described plate body 100 is flat cuboid, proximal surface II is longer and narrower, so described detecting key 101 is consistent with proximal surface II at the partial-length of proximal surface II, from visually seeing detecting key 101 covered section proximal surface II (bound edge), copper thickness that detecting key 101 is selected for use and concrete shape need be looked first frequency section and second frequency Duan Erding, in the present embodiment, the first frequency section is 20KHz to 500KHz, and the first frequency section is a low-frequency noise signal frequency section; The second frequency section is 80KHz to 120KHz, and the second frequency section is the working signal frequency band.Also need to prove, in this enforcement, detecting key 101 numbers are 6, correspond to initiating key, stop key, Pause key, fast forward button, rewind down key and volume key, and in other embodiments, detecting key 101 numbers are not limited to 6, can be 2,3,4,5,7,8,9 ... .32, corresponding function also can be detected the scope that plate uses according to button and establish, for example unlatching of TV, close, channel selection; The perhaps unlatching of microwave oven, stop, time set, temperature set; The perhaps unlatching of washing machine, stop, program for washing selects; The perhaps keyboard of computer input, for example Q, W, E, R, Fl, Ctrl or Alt key function or the like.
It is to be noted material, the shape and size of described plate body 100, copper thickness, layout and size that detecting key 101 is selected for use, the material of plain conductor 103, thickness, layout and size, and the position of interface 102 makes that with arranging button detecting plate can be as the antenna of low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz).
Further, described button detecting plate also comprises balance point 104, described balance point 104 is used for modifier key detecting plate and is suitable for the antenna of doing the low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz), described balance point 104 is a metal dots, and described balance point 104 can be metal derby, the metal wire that additionally is produced on plate body 100 inside; Preferably, balance point 104 directly adopts the connecting hole or the interface 102 of detecting key 101, and parameters such as the connecting hole by design detecting key 101 or the size of interface 102, diameter come modifier key detecting plate to be suitable for to make the antenna that low-frequency disturbance detects.
When first embodiment button detecting plate and keyboard assemble when being used to receive user instruction, by interface 102 and 103 pairs of described detecting keys 101 of plain conductor generation source electric field that charges, and form charge accumulation area on detecting key 101 surfaces, the part keyboard (dielectric touch panel) of each corresponding detecting key 101 of described source field penetration, formation is from the polarized electric field of each detecting key 101 surface to outdiffusion, and accumulation reaches the electric charge of aequum in the charge accumulation area of each electrode.
Wherein, accumulating the electric charge that reaches aequum in described each electrode accumulation area is meant: to each detecting key 101 charging the time, each is detected in the charge accumulation area of key 101 and begins stored charge, when sometime, each detects the charge accumulation area of key 101 can't be gathering more multi-charge when will begin to produce discharge, respectively detects that charges accumulated has reached aequum in the charge accumulation area of key 101 this moment.
The material of described keyboard (dielectric touch panel) can be glass, perhaps also can be other known various insulating material.
The button detecting plate structure of first embodiment of the invention has following function, in the time will operating to touch-screen with described detecting key 101, operator's finger is not directly to touch charged electrode to realize to the influence of the quantity of electric charge in the charge accumulation area, but contacted the keyboard (dielectric touch panel) that does not have annexation with electrode, even may also not contact with keyboard (dielectric touch panel).
The principle that causes above-mentioned situation to occur is, detects key 101 and produced the source electric field separately after charging when each, and described source electric field is an electrostatic field, and it can penetrate the keyboard (dielectric touch panel) that is positioned at its electric field scope.And keyboard (dielectric touch panel) is because described penetrating and polarized, thereby produces polarized electric field.The described polarized electric field corresponding source electric field that is added to is exactly real Electric Field Distribution.When user's finger enters into polarized electric field, can make described real Electric Field Distribution change, cause the transfer of electric charge in the charge accumulation area, thereby variation has taken place in the quantity of electric charge in the charge accumulation area.
This shows, change, generally can be considered that described detecting key 101 corresponding key touch operation has taken place in case in the charge accumulation area of certain detecting key 101 the violent quantity of electric charge has taken place.Thereby, just can obtain the situation that the described quantity of electric charge changes based on this situation, and the maximum situation of definite quantity of electric charge variation is a touch recognition by charge accumulation area being carried out the additional mode of electric charge.And, the finger of considering the user is when touching a certain button, the polarized electric field of not only described touch area correspondence can be affected, and the polarized electric field of detecting key 101 correspondences that it is adjacent also can be owing to operator's non-touch part (other fingers, palm etc.) is received influence.Thereby the quantity of electric charge that also can cause in the electric charge cumulative area of electrode of adjacent detecting key 101 correspondences changes.But, this variation must be that pace of change is slow and relative variation is less with respect to the variation of touch area, thereby on the basis of maximum charge variable quantity before this, the ratio in conjunction with change in electrical charge amount and charge balance amount just can carry out touch recognition more accurately again.Further, because the detecting key 101 of the button of first embodiment of the invention detecting plate is positioned at working face I and proximal surface II, make and to be positioned at working face I and proximal surface II detecting key 101 all can form charge accumulation area, during at a certain button of user's finger touch or near a certain button, user's finger can be detected a face (working face I or proximal surface II) of key 101 all the time perpendicular to this, make in the charge accumulation area of this detecting key 101 quantity of electric charge variable quantity higher one more than the order of magnitude than adjacent detecting key 101, the degree that the detecting key is disturbed reduces greatly, further improves button resolution.
The present inventor also proposes a kind of button detecting plate of optimization, and comprising: plate body, described plate body have two interconnected at least; A plurality of detecting keys, described detecting key is positioned at described plate body first surface, and described plate body first surface is the surface that is parallel to the metal line face; Described detecting key also is positioned at described plate body second surface, and described first surface is two surfaces that are connected of plate body with second surface, and the part that is positioned at second surface of detecting key is more recessed than described second surface.
Described plate body is ito thin film, conductive film, printed circuit board (PCB) or flexible printed circuit board, described plate body also comprises and is positioned at plate body or plate body plain conductor surperficial, that link to each other with the detecting key, be positioned at plate body, by plain conductor and the port that links to each other of detecting key, described port is used for the connection processing chip.
The design more recessed than described second surface of the part that is positioned at second surface of described detecting key can further improve the resolution of button detecting plate and improve the antijamming capability of button.
Further, the periphery of the part of the detecting key of recessed described second surface is an arc, and make the user put the focus that connection terminals contact when touching is positioned at arcwall face, like this, when button detecting plate of the present invention and keyboard assembling, the detecting key has a face perpendicular to keyboard, make when the user points the key of a touching dish, pointing the detecting key corresponding with the key of keyboard remains vertical, when the detecting keyed jointing of correspondence is received working signal, the vertical all the time corresponding detecting key of working signal improves the resolution of button detecting plate, thereby improves the antijamming capability of button.And the surface that is positioned at the detecting key of second surface of the present invention is an arcwall face, makes the user put the focus that the connection terminals contact is positioned at arcwall face when touching, and further improves the antijamming capability that button is detected the resolution of plate and improved button.
Further, button detecting plate of the present invention can also be as the detecting antenna of process chip, material by selection key detecting plate, setting is positioned at the plain conductor trend and the thickness of button detecting plate, the arrangement of detecting key and the arrangement of thickness and port, make button detecting plate can survey the frequency of setting the first frequency section, and material by selection key detecting plate, setting is positioned at the plain conductor trend and the thickness of button detecting plate, the arrangement of detecting key and the arrangement of thickness and port, make user's point touch and be fixed on the second frequency section, reduce the analysis difficulty of analysis chip.
Below in conjunction with a specific embodiment button detecting plate of the present invention is elaborated.
Please refer to Fig. 3, Fig. 3 is the button detecting plate second embodiment schematic diagram of the present invention, comprising:
Detecting key 201 is used to detect keyboard (not shown) and receives user instruction (be user put touch), and user instruction is converted to working signal.Working signal transfers to the process chip (not shown) that is connected with interface 202 by plain conductor 203, and described detecting key 201 is a sheet metal, in the present embodiment, is preferably Copper Foil.Described detecting key 201 is positioned at working face I and proximal surface II, the proximal surface II that considers described plate body 200 is longer and narrower, so described detecting key 201 is consistent with proximal surface II at the partial-length of proximal surface II, concave surface (bound edge) from visually see detecting key 201 covered section proximal surface II, make that detecting key 201 is an arcwall face at proximal surface II, and the focus of described arcwall face is put the contact for the user.Copper thickness that detecting key 201 is selected for use and concrete shape need be looked first frequency section and second frequency Duan Erding, and in the present embodiment, the first frequency section is 20KHz to 500KHz, and the first frequency section is a low-frequency noise signal frequency section; The second frequency section is 80KHz to 120KHz, and the second frequency section is the working signal frequency band.Also need to prove, in this enforcement, detecting key 101 numbers are 6, correspond to initiating key, stop key, Pause key, fast forward button, rewind down key and volume key, and in other embodiments, detecting key 201 numbers are not limited to 6, can be 2,3,4,5,7,8,9 ... .32, corresponding function also can be detected the scope that plate uses according to button and establish, for example unlatching of TV, close, channel selection; The perhaps unlatching of microwave oven, stop, time set, temperature set; The perhaps unlatching of washing machine, stop, program for washing selects; The perhaps keyboard of computer input, for example Q, W, E, R, Fl, Ctrl or Alt key function or the like.
It is to be noted material, the shape and size of described plate body 200, copper thickness, layout and size that detecting key 201 is selected for use, the material of plain conductor 203, thickness, layout and size, and the position of interface 202 makes that with arranging button detecting plate can be as the antenna of low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz).
Further, described button detecting plate also comprises balance point 204, described balance point 204 is used for modifier key detecting plate can be as the antenna of low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz), described balance point 204 is a metal dots, and is preferred, and balance point 204 is the connecting hole or the interface 202 of detecting key 201.
When second embodiment button detecting plate and keyboard assemble when being used to receive user instruction, concrete analysis can be used to receive user instruction with reference to first embodiment button detecting plate and keyboard assembling, but need to prove, second embodiment button detecting plate in use, during at a certain button of user's finger touch or near a certain button, the finger that not only has the user can be detected a face (working face I or proximal surface II) of key 201 all the time perpendicular to this, make in the charge accumulation area of this detecting key 201 quantity of electric charge variable quantity higher one more than the order of magnitude than adjacent detecting key 201, the degree that the detecting key is disturbed reduces greatly, further improve the advantage of button resolution, and detecting key 201 is an arcwall face at proximal surface II, during at a certain button of user's finger touch or near a certain button, described user's finger position is the arcwall face focus or is near the arcwall face focus, when the user touches a certain button or approaching a certain button, further improve quantity of electric charge variable quantity in this charge accumulation area of detecting key 201, optimize button resolution.
The present inventor also proposes a kind of button detecting plate of optimization, and comprising: plate body, described plate body have two interconnected at least; A plurality of detecting keys, described detecting key is positioned at described plate body first surface, and described plate body first surface is the surface that is parallel to the metal line face; Described detecting key also is positioned at described plate body second surface, and described first surface is two surfaces that are connected of plate body with second surface.And the outstanding described second surface of the part that is positioned at second surface of detecting key.
The part that is positioned at second surface of detecting key of the present invention is given prominence to described second surface, reduce the microcontroller (MCU that is connected with button detecting plate, Micro Controller Unit) amount of calculation of the signal variation of calculating detecting key, promptly detect the change in electrical charge amount of calculation of key, thereby improve button reaction speed and resolution.
Below in conjunction with a specific embodiment button detecting plate of the present invention is elaborated.
Please refer to Fig. 4, Fig. 4 is button detecting plate the 3rd embodiment schematic diagram of the present invention, comprising:
Detecting key 301 is used to detect keyboard (not shown) and receives user instruction (be user put touch), and user instruction is converted to working signal.Working signal transfers to the process chip (not shown) that is connected with interface 302 by plain conductor 303, and described detecting key 301 is a sheet metal, in the present embodiment, is preferably Copper Foil.Described detecting key 301 is positioned at working face I and proximal surface II, and is positioned at the protrusion proximal surface II of the detecting key 301 of proximal surface II.In the present embodiment, the signal that described detecting key 301 can touch the point at family transfers to the microcontroller that is connected with button detecting plate, the signal that calculates the detecting key by microcontroller changes, and the detecting key 301 that protrudes proximal surface II can effectively reduce the microcontroller amount of calculation, improves the resolution that adopts button detecting plate of the present invention.Described detecting key 301 is metal derby or sheet metal, in the present embodiment, is preferably Copper Foil.Copper thickness that detecting key 301 is selected for use and concrete shape need be looked first frequency section and second frequency Duan Erding, and in the present embodiment, the first frequency section is 20KHz to 500KHz, and the first frequency section is a low-frequency noise signal frequency section; The second frequency section is 80KHz to 120KHz, and the second frequency section is the working signal frequency band.
It is to be noted material, the shape and size of described plate body 300, copper thickness, layout and size that detecting key 301 is selected for use, the material of plain conductor 303, thickness, layout and size, and the position of interface 302 makes that with arranging button detecting plate can be as the antenna of low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz).
Further, described button detecting plate also comprises balance point 304, described balance point 304 is used for modifier key detecting plate can be as the antenna of low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz), described balance point 304 is a metal dots, and is preferred, and balance point 304 is the connecting hole or the interface 302 of detecting key 301.
Also it is to be noted, in other embodiments, the periphery of the part of the detecting key of recessed described second surface is an arc, the periphery of the part of the detecting key of described recessed described second surface is that the shape of arc can effectively reduce the amount of calculation that the microcontroller (MCU, Micro Controller Unit) that is connected with button detecting plate calculates the signal variation of detecting key.
When the 3rd embodiment button detecting plate and keyboard assemble when being used to receive user instruction, concrete analysis can with reference to first embodiment and the second embodiment button be detected plate and the keyboard assembling is used to receive user instruction, but need to prove, be positioned at the protrusion proximal surface II of the detecting key 301 of proximal surface II, during at a certain button of user's finger touch or near a certain button, make that quantity of electric charge variable quantity is big in the charge accumulation area of this detecting key 301, and quantity of electric charge variable quantity is little in the charge accumulation area of adjacent detecting key 301, the degree that the detecting key is disturbed reduces greatly, further improves the advantage of button resolution.
The present inventor also proposes a kind of button detecting plate of optimization, and comprising: plate body, described plate body have two interconnected at least; A plurality of detecting keys, described detecting key is positioned at described plate body first surface, and described plate body first surface is the surface that is parallel to the metal line face; Described detecting key also is positioned at described plate body second surface, and described first surface is two surfaces that are connected of plate body with second surface.And described plate body is for by the staggered zigzag that constitutes of protuberance and recess, and described detecting key is positioned at the first surface of protuberance of described plate body and the second surface that is positioned at protuberance.
Detecting key of the present invention is positioned at described protuberance first surface and second surface, not only reduce the amount of calculation that the microcontroller that is connected with button detecting plate calculates the signal variation of detecting key, promptly detect the change in electrical charge amount of calculation of key, thereby improve button reaction speed and resolution; And have air as partition between detecting key and the adjacent detecting key, make that detecting the degree that key disturbed reduces greatly, further improves button resolution.
Please refer to Fig. 5, Fig. 5 is button detecting plate the 4th embodiment schematic diagram of the present invention, comprising:
Observe Fig. 5 as can be known, plate body 400 is " Great Wall " shape, and body 410 is flat cuboid, and protuberance 420 is the battlement on Great Wall, and protuberance 420 quantity are 7.In other embodiments, protuberance 420 quantity can be 3,5,9,11.Single protuberance 420 is a cuboid.The described plate body 400 of body 410 and protuberance 420 that comprises can directly be processed acquisition to printed circuit board (PCB) or flexible printed circuit board.
Detecting key 401 is used to detect keyboard (not shown) and receives user instruction (be user put touch), and user instruction is converted to working signal.Working signal transfers to the process chip (not shown) that is connected with interface 402 by plain conductor 403.Described detecting key 401 is positioned at described protuberance 420 first surfaces and second surface, and described first surface and second surface are interconnected two faces.Described detecting key 401 is a sheet metal, in the present embodiment, is preferably Copper Foil.Described detecting key 401 is positioned at a surface and the proximal surface adjacent with this surface of protuberance 420, the surface that described detecting key 401 is positioned at protuberance 420 is the first surface of described plate body 400, be generally the surface that is parallel to metal line face in the printed circuit board (PCB), another surface that described detecting key 401 is positioned at protuberance 420 is the second surface of described plate body 400.
And described detecting key 101 is consistent with proximal surface at the partial-length of proximal surface, coat the proximal surface (bound edge) of protuberance 420 from visually seeing detecting key 401, but detecting key 401 covered section proximal surfaces does not influence its result of use yet.Copper thickness that detecting key 401 is selected for use and concrete shape need be looked first frequency section and second frequency Duan Erding, and in the present embodiment, the first frequency section is 20KHz to 500KHz, and the first frequency section is a low-frequency noise signal frequency section; The second frequency section is 80KHz to 120KHz, and the second frequency section is the working signal frequency band.
It is to be noted material, the shape and size of described plate body 400, copper thickness, layout and size that detecting key 401 is selected for use, the material of plain conductor 403, thickness, layout and size, and the position of interface 402 makes that with arranging button detecting plate can be as the antenna of low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz).
Further, described button detecting plate also comprises balance point 404, described balance point 404 is used for modifier key detecting plate can be as the antenna of low-frequency disturbance detection, be used to detect the low-frequency noise signal of first frequency section (20KHz to 500KHz), and the signal that makes user's point touch is fixed on second frequency section (80KHz to 120KHz), described balance point 404 is a metal dots, and is preferred, and balance point 404 is the connecting hole or the interface 402 of detecting key 401.
When the 4th embodiment button detecting plate and keyboard assemble when being used to receive user instruction, concrete analysis can be with reference to first embodiment, second embodiment and the 3rd embodiment button detecting plate and keyboard assembling are used to receive user instruction, but need to prove, described detecting key 401 is positioned at a surface and the proximal surface adjacent with this surface of protuberance 420, during at a certain button of user's finger touch or near a certain button, make that quantity of electric charge variable quantity is big in the charge accumulation area of this detecting key 401, and quantity of electric charge variable quantity is little in the charge accumulation area of adjacent detecting key 401, the degree that the detecting key is disturbed reduces greatly, further improves the advantage of button resolution.
Though the present invention with preferred embodiment openly as above; but it is not to be used for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize the method and the technology contents of above-mentioned announcement that technical solution of the present invention is made possible change and modification; therefore; every content that does not break away from technical solution of the present invention; to any simple modification, equivalent variations and modification that above embodiment did, all belong to the protection range of technical solution of the present invention according to technical spirit of the present invention.
Claims (11)
1. a button is detected plate, comprising:
Plate body, described plate body have two interconnected at least;
A plurality of detecting keys, described detecting key is positioned at described plate body first surface, and described plate body first surface is the surface that is parallel to the metal line face;
It is characterized in that,
Described detecting key also is positioned at described plate body second surface, and described first surface is two surfaces that are connected of plate body with second surface.
2. button detecting plate as claimed in claim 1 is characterized in that the part that is positioned at second surface of detecting key flushes with described second surface.
3. button detecting plate as claimed in claim 1 is characterized in that, the outstanding described second surface of the part that is positioned at second surface of detecting key.
4. button detecting plate as claimed in claim 3 is characterized in that the periphery of the part of the detecting key of outstanding described second surface is an arc.
5. button detecting plate as claimed in claim 1 is characterized in that the part that is positioned at second surface of detecting key is more recessed than described second surface.
6. button detecting plate as claimed in claim 5 is characterized in that the periphery of the part of the detecting key of recessed described second surface is an arc.
7. button detecting plate as claimed in claim 5 is characterized in that the periphery of the part of the detecting key of recessed described second surface is an arc, and the focus of described arcwall face is put the contact for the user.
8. button as claimed in claim 1 detecting plate is characterized in that, described plate body is for by protuberance and the staggered zigzag that constitutes of recess, and described detecting key is positioned at the first surface of protuberance of described plate body and the second surface that is positioned at protuberance.
9. detect plate as each described button in the claim 1 to 6, it is characterized in that, also comprise:
Be positioned at the interface and the balance point that is positioned at described plate body inside of described plate body inside.
10. button detecting plate as claimed in claim 7 is characterized in that described balance point is described interface or is the connecting hole of detecting key.
11. detect plate as each described button in the claim 1 to 6, it is characterized in that described plate body is ito thin film, printed circuit board (PCB) or flexible printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010575705.8A CN102006047B (en) | 2010-09-30 | 2010-12-06 | Key detection board |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105147470 | 2010-09-30 | ||
| CN201010514747 | 2010-09-30 | ||
| CN201010514747.0 | 2010-09-30 | ||
| CN201010575705.8A CN102006047B (en) | 2010-09-30 | 2010-12-06 | Key detection board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102006047A true CN102006047A (en) | 2011-04-06 |
| CN102006047B CN102006047B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010575705.8A Active CN102006047B (en) | 2010-09-30 | 2010-12-06 | Key detection board |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102006047B (en) |
| WO (1) | WO2012040976A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143723A (en) * | 2013-12-31 | 2014-11-12 | 广州奥迪通用照明有限公司 | Electric connector and lighting device |
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| US20050179673A1 (en) * | 2004-02-13 | 2005-08-18 | Harald Philipp | Capacitive sensor |
| CN201426116Y (en) * | 2009-05-21 | 2010-03-17 | 科晶馨科技股份有限公司 | Film circuit board structure of capacitance-type keyboard |
| CN201518477U (en) * | 2009-09-25 | 2010-06-30 | 赣州市英唐电子科技有限公司 | Sensing structure of touch button |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064222A (en) * | 2006-04-25 | 2007-10-31 | 米迪亚系统科技股份有限公司 | Touch controlled key module |
| CN101324805B (en) * | 2007-06-13 | 2011-09-21 | 博西华电器（江苏）有限公司 | Touching key structure and household electrical appliance using the same |
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2010
- 2010-12-06 WO PCT/CN2010/079462 patent/WO2012040976A1/en active Application Filing
- 2010-12-06 CN CN201010575705.8A patent/CN102006047B/en active Active
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| US20050179673A1 (en) * | 2004-02-13 | 2005-08-18 | Harald Philipp | Capacitive sensor |
| CN201426116Y (en) * | 2009-05-21 | 2010-03-17 | 科晶馨科技股份有限公司 | Film circuit board structure of capacitance-type keyboard |
| CN201518477U (en) * | 2009-09-25 | 2010-06-30 | 赣州市英唐电子科技有限公司 | Sensing structure of touch button |
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| 《中国优秀硕士学位论文全文数据库-信息科技辑（月刊）》 20080615 袁忠根 《一种基于PSoC的电容感应式触摸按键系统的设计与实现》 全文 1-11 , 第6期 2 * |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102006047B (en) | 2016-06-29 |
| WO2012040976A1 (en) | 2012-04-05 |
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