CN102082567B - Metal via hole key detection board - Google Patents
Metal via hole key detection board Download PDFInfo
- Publication number
- CN102082567B CN102082567B CN2011100276342A CN201110027634A CN102082567B CN 102082567 B CN102082567 B CN 102082567B CN 2011100276342 A CN2011100276342 A CN 2011100276342A CN 201110027634 A CN201110027634 A CN 201110027634A CN 102082567 B CN102082567 B CN 102082567B
- Authority
- CN
- China
- Prior art keywords
- detecting
- key
- button
- plate
- plate body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
The invention discloses a metal via hole key detection board. The board comprises a board body and a plurality of detection keys, wherein the detection keys are embedded into the front side of the board body at intervals; each detection key is provided with an interface; the board body is provided with connection holes; the interfaces are connected with the connection holes through metal wires; each detection key is also provided with at least one row of metal via holes; a metal foil is arranged on the internal surface of each metal via hole; and the metal foils are connected with one another through second metal wires, and connected with the connection holes through third metal wires. The key detection board has high resolving accuracy and diversified functions, and the resolution of the key detection board is improved, so that the anti-jamming capability of keys is improved. The key detection board also can be taken as a detection antenna of a processing chip, the analysis difficulty of an analysis chip is reduced, and the reaction speed and resolution of the keys are improved, so that the degree of interfering the detection keys is greatly reduced.
Description
Technical field
The present invention relates to a kind of electronic key and control plate, particularly a kind of detecting plate of tangible operational and controlled key button.Belong to the electron controls technology field.
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 through the keyboard of portable terminal, and the button through television set carries out television channel to be selected, and the button through audio-visual equipment 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; This 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 sketch map, comprising: keyboard 10; Said keyboard 10 is used to receive user instruction; Said 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 user touching or when putting diagram or the literal on beating keyboard 10 surfaces; The user instruction that detecting keyboard 10 receives; And convert user instruction into working signal and transfer to the process chip (not shown) that is connected with button detecting plate 20, button detecting plate 20 comprises plate body 21 and detects key 22 that said plate body 21 is generally printed circuit (Printed Circuit Board; PCB) or flexible print circuit (Flexible Printed Circuit; FPC) plate, said plate body 21 for carrying detecting key 22 platform is provided and for process chip provides interface, said detecting key 22 is positioned at the surface of plate body 21, is used to detect keyboard to receive user instruction, and transmits said 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; Can't be suitable for and be in high temperature or other maximal work environment, and existing button detecting plate antijamming capability is relatively poor, can't satisfy the era development requirement at keyboard 10.
Summary of the invention
The present invention provides a kind of new button detecting plate, can simplify button and judge identifying, and the solution keyboard is in high temperature or other maximal work environment can't be suitable for and the relatively poor problem of button detecting plate antijamming capability.
For addressing the above problem, the present invention provides a kind of metallic vias button detecting plate, comprising: plate body, several detect key; Said detecting key is by being embedded in said plate body front side at interval; Each detecting key is provided with an interface, and plate body is provided with connecting hole, and said interface links to each other through being connected lead with connecting hole; Also be provided with at least one line number metallic vias on the said detecting key; Said metallic vias inner surface is provided with metal forming, links to each other in twos through lead between the said metal forming, and links to each other with interface through lead.
Further, detecting key leading flank of the present invention is the plane, and side plane flushes with the plate body leading flank before several detecting keys.
Further, detecting key leading flank of the present invention is a concaved circular cambered surface.
Further, side plane projecting plate body leading flank before the detecting key of the present invention.
Further, the plate body front side is provided with recess, and said detecting key is by be arranged in the recess at interval, and side plane flushes with the plate body leading flank before the detecting key.
After button detecting plate of the present invention and the keyboard assembling; The detecting key has a face all the time perpendicular to keyboard, makes when the user points the key of a touching dish, points the detecting key corresponding with the key of keyboard and remains vertical; When the detecting keyed jointing of correspondence is received working signal; The vertical all the time corresponding detecting key of working signal has improved the resolution of button detecting plate, thereby improves the antijamming capability of button.Button detecting plate of the present invention can also be as the detecting antenna of process chip; Material through selection key detecting plate; Be positioned at plain conductor trend and thickness, the arrangement of detecting key and the arrangement of thickness and port of button detecting plate, make button detecting plate can survey the frequency of setting the first frequency section; And through the material of selection key detecting plate, the plain conductor trend and thickness, the arrangement of detecting key and the arrangement of thickness and port that are positioned at button detecting plate are set, make user's point touch and be fixed on the second frequency section, the analysis difficulty of reduction analysis chip.
Detecting key leading flank of the present invention is a concaved circular cambered surface, and said concaved circular cambered surface focus makes the user put the focus that the connection terminals contact is positioned at arcwall face when touching for the user puts the contact, further improves resolution and the antijamming capability that improves button that button is detected plate.
The microcontroller (MCU, Micro Controller Unit) that is connected with button detecting plate calculates the amount of calculation of the signal variation of detecting key, and the change in electrical charge amount of calculation of promptly detecting key is reduced, thereby improves button reaction speed and resolution.
The present invention 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 detects the change in electrical charge amount of calculation of key, thereby improves 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 sketch map;
Fig. 2 is the metallic vias button detecting plate first embodiment sketch map of the present invention;
The profile that Fig. 3 connects for metallic vias of the present invention in twos;
The profile that Fig. 4 is connected with detecting key connecting hole for metallic vias of the present invention;
Fig. 5 is the metallic vias button detecting plate second embodiment sketch map of the present invention;
Fig. 6 is metallic vias button detecting plate the 3rd embodiment sketch map of the present invention;
Fig. 7 is metallic vias button detecting plate the 4th embodiment sketch map of the present invention.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, does detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Set forth detail in the following description so that make much of 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 does not receive the restriction of following disclosed embodiment.
The 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 through making up special membrane keyboard structure operator's finger can need not to touch actual touch-screen or keyboard.And, based on said membrane keyboard structural design accordingly to the supply power mode and the touch identification method of membrane keyboard structure, 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 said detecting plate, detecting plate and the insulation of said keyboard are isolated; During use, the user touches key dish or near keyboard the time corresponding to having triggering signal, be positioned on the detecting plate or the analytical test chip that is connected with the detecting plate interface carries out discriminatory analysis to said triggering signal; Confirm which button is triggered and trigger corresponding function; But find that 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, cause the power consumption of analytical test chip, committed memory is big, and to this problem, the inventor has proposed improvement to press-key structure.
For this reason, the inventor proposes a kind of button detecting plate of optimization, and when button detecting plate of the present invention and keyboard assembling, said button detecting plate can assemble at any angle and between the keyboard, cooperates with said keyboard such as 0～180 ° of orientation.Optimally; Can make the detecting key of said button detecting plate a face arranged, make when the user points the button of a touching dish, point the detecting key corresponding and remain vertical with keyboard perpendicular to keyboard; 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 is applicable to the air type button, said 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; Through the material of selection key detecting plate, confirm to be positioned at plain conductor trend and thickness, the arrangement of detecting key and the arrangement of thickness and port of button detecting plate, make button detecting plate can survey the frequency of setting the first frequency section; And material through selection key detecting plate; Confirm to be positioned at the plain conductor trend and thickness, the arrangement of detecting key and the arrangement of thickness and port of button detecting plate, make user's point touch and be fixed on the second frequency section, the analysis difficulty of reduction analysis chip.
Further, the detecting key is positioned at the plate body upper surface portion and also is provided with at least one line number metallic vias, and said metallic vias inner surface is provided with metal forming, links to each other in twos through lead between the said metal forming, and links to each other with interface through lead.Line number what according to first frequency section of setting and the decision of second frequency section, makes full use of the area that the space increases the detecting key, reduces the change in electrical charge amount of calculation of detecting key.
Below in conjunction with a specific embodiment button detecting plate of the present invention is elaborated.
Fig. 2 is the button detecting plate first embodiment sketch map of the present invention, comprising: plate body 100, and said plate body 100 can be printed circuit board (PCB) or flexible printed circuit board; In the present embodiment; Select printed circuit board (PCB) for use, said plate body 100 is flat cuboid, and said printed circuit board (PCB) is piled up by the medium of multilayer and wiring layer usually and forms; Plate body 100 upper surfaces are the surface that is parallel to the wiring layer of printed circuit board (PCB), perpendicular to the wiring layer stacking direction.
Detecting key 101 is used to detect keyboard and receives the instruction that user's point triggers out; And convert user instruction into working signal; Working signal transfers to the process chip that is connected with interface 102 through plain conductor 103; Detecting key 101 surfaces are sheet metal, and in the present embodiment, sheet metal is preferably Copper Foil.Detecting key 101 is by being embedded in plate body 100 front sides at interval; Consider that said plate body 100 is flat cuboid; Leading flank is longer and narrower; So the leading flank of detecting key 101 is the plane, side plane flushes with plate body 100 leading flanks before several detecting keys 101, visually detects the leading flank of key 101 covered section plate bodys 100.Detecting key 101 upper surfaces are provided with at least one line number metallic vias 105, and said metallic vias 105 inner surfaces are provided with metal forming.The copper thickness that detecting key 101 is selected for use, concrete shape and metallic vias 105 line numbers need be looked first frequency section and second frequency Duan Erding, make full use of the area that the space increases detecting key 101, reduce the change in electrical charge amount of calculation of detecting key.
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; Metallic vias 105 line numbers are 2 row.Need to prove that also in the present embodiment, 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, the 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, F1, Ctrl or Alt key function or the like.
Link to each other in twos through lead 103 between the metal forming of metallic vias 105, and link to each other with interface 102 through lead 103.
Metal forming material and detecting key 101 upper surfaces, leading flank part material are identical.Plain conductor 103 is positioned at said plate body 100 upper surfaces or said plate body 100 inside, is used for working signal and transfers to process chip and be connected with 105 of metallic vias, and plain conductor 103 is preferably copper cash.The size of line number is according to first frequency section of setting and the decision of second frequency section, and interface 102 is positioned at said plate body 100 inside, is used for the connection processing chip.
It is to be noted material, the shape and size of said plate body 100; The line number of copper thickness, layout dimension and metallic vias 105 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).
Please refer to Fig. 3, Fig. 4, metallic vias 105 adjacent two mistake internal surface of hole link to each other through plain conductor 106, and said plain conductor 106 is preferably copper cash; Metallic vias 105 inner surface metal formings link to each other through the connecting hole 104 of plain conductor 107 with detecting key 101; Said plain conductor 107 is preferably copper cash; Several are crossed internal surface of hole be linked as integral body, increase the area of detecting key, reduce the change in electrical charge amount of calculation of detecting key with the detecting key surface.
When first embodiment button detecting plate and keyboard assemble when being used to receive user instruction; Through interface 102 and 103 pairs of said 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 said source field penetration forms from each and detects the polarized electric field of key 101 surfaces 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 said 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 said 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 said 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 possibly also not contact with keyboard (dielectric touch panel).
The principle that causes above-mentioned situation to occur is, detects key 101 and after charging, has produced the source electric field separately when each, and said 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 polarized owing to said penetrating, thereby produces polarized electric field.The said 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 said 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 just can think that touch operation has taken place said detecting key 101 corresponding key 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 said quantity of electric charge changes based on this situation, and the maximum situation of definite quantity of electric charge variation is a touch recognition through charge accumulation area being carried out the additional mode of electric charge.And; Consider that user's finger is when touching a certain button; The corresponding polarized electric field in not only said touch area can be affected, and its adjacent detecting key 101 corresponding polarized electric fields 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 the corresponding electrode of adjacent detecting key 101 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, combine the ratio of 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 plate body 100 front sides; Make detecting key 101 all can form charge accumulation area; At a certain button of user's finger touch or when a certain button, user's finger all the time can be perpendicular to this face (upper surface or leading flank) of detecting key 101, makes that quantity of electric charge variable quantity is than more than the adjacent detecting key 101 high one magnitude in the charge accumulation area of this detecting key 101; The degree that the detecting key is disturbed reduces greatly, further improves button resolution.
Fig. 5 is the button detecting plate second embodiment sketch map of the present invention, comprising: plate body 100, and said plate body 100 can be printed circuit board (PCB) or flexible printed circuit board; In the present embodiment; Select printed circuit board (PCB) for use, said plate body 100 is flat cuboid, and said printed circuit board (PCB) is piled up by the medium of multilayer and wiring layer usually and forms; Said upper surface is the surface that is parallel to the wiring layer of printed circuit board (PCB), perpendicular to the direction of piling up.Detecting key 101 is used to detect keyboard (not shown) and receives user instruction (be user put touch), and converts user instruction into working signal.Working signal transfers to the process chip (not shown) that is connected with interface 102 through plain conductor 103, and said detecting key 101 is a sheet metal, in the present embodiment, is preferably Copper Foil.Said detecting key 101 is embedded in plate body 100 front sides by certain intervals; The leading flank of considering plate body 100 is longer and narrower; So detecting key 101 is consistent with leading flank at the partial-length of leading flank; Visually detect the concave surface in the key 101 covered section leading flanks, make that detecting key 101 is a concaved circular cambered surface at leading flank, and the focus of said concaved circular cambered surface is put the contact for the user.Said detecting key 101 is provided with at least one line number metallic vias 105; The copper thickness that detecting key 101 is selected for use, concrete shape and metallic vias 105 line numbers 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; Metallic vias 105 line numbers are 2 row.Need to prove that also 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, the 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, F1, Ctrl or Alt key function or the like.
It is to be noted material, the shape and size of said plate body 100; The line number of copper thickness, layout dimension and metallic vias 105 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).
The annexation of metallic vias 105 can be with reference to the annexation of metallic vias 105 among first embodiment in the present embodiment.
Detecting key 101 leading flanks shown in Figure 5 are concaved circular cambered surface.Can further improve the resolution and the antijamming capability that improves button of button detecting plate.When user's point touched, the connection terminals contact was positioned at the focus of arcwall face, like this; When button detecting plate of the present invention and keyboard assembling, detecting key 101 has a face perpendicular to keyboard, makes when the user points the key of a touching dish; Point the detecting key 101 corresponding with the key of keyboard remain vertical, when the detecting key 101 of correspondence receives working signal, the detecting key 101 that working signal is vertical corresponding all the time; Improve the resolution of button detecting plate, thereby improve the antijamming capability of button.
Further; Button detecting plate of the present invention can also be as the detecting antenna of process chip; Through the material of selection key detecting plate, the plain conductor trend and thickness, the arrangement of detecting key 101 and the arrangement of thickness and interface 102 that are positioned at button detecting plate are set, make button detecting plate can survey the frequency of setting the first frequency section; And material through selection key detecting plate; Setting is positioned at the plain conductor trend and thickness, the arrangement of detecting key 101 and the arrangement of thickness and interface 102 of button detecting plate, makes user's point touch and is fixed on the second frequency section, the analysis difficulty of reduction analysis chip.
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 that the second embodiment button is detected plate in use, during at a certain button of user's finger touch or near a certain button; Not only have user's finger and can detect a face (upper surface or leading flank) of key 101 all the time perpendicular to this; Make that quantity of electric charge variable quantity is than more than the high one magnitude of adjacent detecting key in the charge accumulation area of this detecting key, the degree that detecting key 101 is disturbed reduces greatly, further improves button resolution; And detecting key 101 is a concaved circular cambered surface at leading flank; During at a certain button of user's finger touch or near a certain button, said user's finger position is the concaved circular cambered surface focus or is near the concaved circular cambered surface focus, when the user touches a certain button perhaps near a certain button; Further improve quantity of electric charge variable quantity in this charge accumulation area of detecting key 101, optimize button resolution.
Fig. 6 is button detecting plate the 3rd embodiment sketch map of the present invention, comprising:
Detecting key 101 is used to detect keyboard (not shown) and receives user instruction (be user put touch), and converts user instruction into working signal.Working signal transfers to the process chip (not shown) that is connected with interface 102 through plain conductor 103, and said detecting key 101 is a sheet metal, in the present embodiment, is preferably Copper Foil.Said detecting key 101 outstanding plate body 100 leading flanks; In the present embodiment; The signal that said detecting key 101 can touch the point at family transfers to the microcontroller that is connected with button detecting plate; The signal that calculates the detecting key through microcontroller changes, and the detecting key 101 of outstanding plate body 100 leading flanks can effectively reduce the microcontroller amount of calculation, improves the resolution that adopts button detecting plate of the present invention.Said detecting key 101 is metal derby or sheet metal, in the present embodiment, is preferably Copper Foil.Said detecting key 101 upper surfaces are provided with at least one row metal via hole 105; The copper thickness that detecting key 101 is selected for use, concrete shape and metallic vias 105 line numbers 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; Metallic vias 105 line numbers are 2 row.
It is to be noted material, the shape and size of said plate body 100; The line number of copper thickness, layout dimension and metallic vias 105 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).
The annexation of metallic vias 105 can be with reference to the annexation of metallic vias 105 among first embodiment in the present embodiment.The part that is positioned at leading flank of detecting key 101 of the present invention is given prominence to said leading flank; 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 101; Promptly detect the change in electrical charge amount of calculation of key 101, thereby improve button 101 reaction speeds and resolution.The microcontroller (MCU, Micro Controller Unit) that the detecting plate connects calculates the amount of calculation of 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 that detecting key 101 outstanding plate body 100 leading flanks are 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 101; And quantity of electric charge variable quantity is little in the charge accumulation area of adjacent detecting key 101, and the degree that the detecting key is disturbed reduces greatly, further improves the advantage of button resolution.
Side plane projecting plate body 100 leading flanks before the detecting key of the present invention; Not only reduce the amount of calculation that the microcontroller that is connected with button detecting plate calculates the signal variation of detecting key 101; Promptly detect the change in electrical charge amount of calculation of key 101, 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. 7, Fig. 7 is button detecting plate the 4th embodiment sketch map of the present invention, comprising:
Observe Fig. 5 and can know that plate body 100 is " Great Wall " shape, outstanding detecting key 101 is the battlement on Great Wall, and outstanding detecting key 101 quantity of present embodiment are 7.In other embodiments, outstanding detecting key 401 quantity can be 3,5,9,11.Recess 108 can directly be processed acquisition to printed circuit board (PCB) or flexible printed circuit board.
Detecting key 101 is used to detect keyboard (not shown) and receives user instruction (be user put touch), and converts user instruction into working signal.Working signal transfers to the process chip (not shown) that is connected with interface 102 through plain conductor 103.Plate body 100 front sides are provided with recess 108, and said detecting key is by be arranged in the recess 108 at interval, and side plane flushes with the plate body leading flank before the detecting key.
Detecting key 101 is a sheet metal, in the present embodiment, is preferably Copper Foil.Said detecting key 101 is provided with at least one row metal via hole 105.Side plane flushes with plate body 100 leading flanks before visually detecting key 101; The copper thickness that detecting key 101 is selected for use, concrete shape and metallic vias 105 line numbers 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; Metallic vias 105 line numbers are 2 row.
It is to be noted material, the shape and size of said plate body 100; The line number of copper thickness, layout dimension and metallic vias 105 that detecting key 101 is selected for use; The material of plain conductor 103, 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).
The annexation of metallic vias 105 can be with reference to first embodiment in the present embodiment.
When the 4th 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, second embodiment and the 3rd embodiment button detecting plate and keyboard assembling; Detecting key 101 is by be arranged in the recess 108 at interval, and side plane flushes with plate body 100 leading flanks before the detecting key 101.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 101; 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 are not breaking away from the spirit and scope of the present invention; Can utilize the method and the technology contents of above-mentioned announcement that technical scheme of the present invention is made possible change and modification, therefore, every content that does not break away from technical scheme of the present invention; To any simple modification, equivalent variations and modification that above embodiment did, all belong to the protection range of technical scheme of the present invention according to technical spirit of the present invention.
Claims (5)
1. metallic vias button detecting plate comprises: plate body, several detects key, and said detecting key is embedded in said plate body front side by the interval; Each detecting key is provided with an interface, and plate body is provided with connecting hole, and said interface links to each other through being connected lead with connecting hole; It is characterized in that; Said detecting key surface is a sheet metal, also is provided with at least one line number metallic vias on the said detecting key, and said metallic vias inner surface is provided with metal forming; Link to each other in twos through lead between the said metal forming, and link to each other with interface through lead.
2. metallic vias button detecting plate as claimed in claim 1 is characterized in that said detecting key leading flank is the plane, and side plane flushes with the plate body leading flank before several detecting keys.
3. metallic vias button detecting plate as claimed in claim 1 is characterized in that said detecting key leading flank is a concaved circular cambered surface.
4. metallic vias button detecting plate as claimed in claim 1 is characterized in that side plane projecting plate body leading flank before the detecting key.
5. according to claim 1 or claim 2 metallic vias button detecting plate is characterized in that said plate body front side is provided with recess, and said detecting key is by be arranged in the recess at interval, and side plane flushes with the plate body leading flank before the detecting key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100276342A CN102082567B (en) | 2011-01-26 | 2011-01-26 | Metal via hole key detection board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100276342A CN102082567B (en) | 2011-01-26 | 2011-01-26 | Metal via hole key detection board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102082567A CN102082567A (en) | 2011-06-01 |
| CN102082567B true CN102082567B (en) | 2012-11-28 |
Family
ID=44088334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100276342A Active CN102082567B (en) | 2011-01-26 | 2011-01-26 | Metal via hole key detection board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102082567B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051320A (en) * | 2011-10-14 | 2013-04-17 | 十速兴业科技（深圳）有限公司 | Circuit layout of touch button and detection method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465640A (en) * | 2007-12-18 | 2009-06-24 | 比亚迪股份有限公司 | Touch key device |
| CN201654136U (en) * | 2008-09-25 | 2010-11-24 | 苹果公司 | Capacitance sensor and media player |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005084982A (en) * | 2003-09-09 | 2005-03-31 | Pentel Corp | Capacitive touch panel device |
-
2011
- 2011-01-26 CN CN2011100276342A patent/CN102082567B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465640A (en) * | 2007-12-18 | 2009-06-24 | 比亚迪股份有限公司 | Touch key device |
| CN201654136U (en) * | 2008-09-25 | 2010-11-24 | 苹果公司 | Capacitance sensor and media player |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2005-84982A 2005.03.31 |
| 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》.《中国优秀硕士学位论文全文数据库-信息科技辑（月刊）》.2008,(第6期),第38至第43页以及附图3-11至3-15. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102082567A (en) | 2011-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8497786B2 (en) | Capacitive keyboard with enhanced electrode areas | |
| US11418193B2 (en) | Key unit and keyboard using the same | |
| CN106020558A (en) | Composite touch control key and control method | |
| KR20160128994A (en) | System and method for gesture control | |
| CN103034378A (en) | Capacitance sensing circuits, methods and systems having conductive touch surface | |
| CN106817447A (en) | A kind of mobile terminal | |
| TWI706304B (en) | Touch control method, circuit system and touch device | |
| TWI772953B (en) | Touch control method and touch device | |
| CN102006046B (en) | Key detection board | |
| US20140160641A1 (en) | Electronic apparatus | |
| CN102375627A (en) | Contact control structure of capacitance contact control panel and manufacturing method thereof | |
| CN102082567B (en) | Metal via hole key detection board | |
| CN202178749U (en) | Key detection board with plated through holes | |
| CN102006048B (en) | Key detecting board | |
| CN102006047B (en) | Key detection board | |
| CN203859845U (en) | Control device | |
| CN111665989A (en) | Touch device, manufacturing method thereof, touch method and electronic equipment | |
| CN105162448A (en) | Metal inductive touch device | |
| CN106293254A (en) | Touch control display apparatus | |
| CN116149505A (en) | Adjusting cursor speed | |
| CN204695284U (en) | The self-capacitance contact panel of flexible circuit board and application thereof | |
| KR20140136353A (en) | Capacitive Force-based Input Device Using Elasticity of Housing | |
| CN103309481A (en) | Display module and electronic device | |
| CN102339149B (en) | Space mouse and control method thereof | |
| CN104009744B (en) | Electronic card and capacitive touch sensing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |