CN202976048U - Touch sensing device and circuit board - Google Patents
Touch sensing device and circuit board Download PDFInfo
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- CN202976048U CN202976048U CN 201220686952 CN201220686952U CN202976048U CN 202976048 U CN202976048 U CN 202976048U CN 201220686952 CN201220686952 CN 201220686952 CN 201220686952 U CN201220686952 U CN 201220686952U CN 202976048 U CN202976048 U CN 202976048U
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000011889 copper foil Substances 0.000 claims abstract description 41
- 239000007787 solid Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 230000011664 signaling Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 5
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- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
Touch-control sensing device and circuit board. A touch sensing device comprises a circuit board and a sensing signal processing unit, wherein the circuit board comprises an insulating substrate with a first surface and a second surface, a capacitance sensing electrode formed on the first surface, a near-field sensing electrode formed on the first surface and spaced from the capacitance sensing electrode, and a grounding copper foil formed on the second surface, the grounding copper foil is formed with the capacitance sensing electrode at a position corresponding to the first surface and spaced from the near-field sensing electrode, the sensing signal processing unit is arranged on the second surface and comprises a capacitance sensing port electrically connected with the capacitance sensing electrode, a near-field sensing port electrically connected with the near-field sensing electrode, and a sensing signal conversion engine electrically connected with the capacitance sensing port and the near-field sensing port, and the sensing signal conversion engine is spaced from the capacitance sensing electrode and the near-field sensing electrode at a position corresponding to the first surface.
Description
Technical field
The utility model relates to a kind of touch sensing device and circuit board, particularly relates to a kind of circuit board that uses the touch sensing device of single sensing signal transform engine and be used in conjunction with single sensing signal transform engine.
Background technology
For a long time, be applied to traditional mechanical key device of electric equipment products, be mainly the start and stop that a mechanical key is controlled an electrical loop.
Yet, arrival along with the science and technology life, the too huge and independently assembling of each mechanical key due to the mechanical key volume of traditional type, and be not suitable for being arranged at take light, thin, short, little electronic product as the development main shaft, and the touch-control interface tech is ripe day by day, so the induction type button replaces the traditional type mechanical key gradually, become the main flow that is applied to electric equipment and electronic product.
Mainly contain at present the touch sensing device of two types, below will describe this touch sensing device of two types.
Consult Fig. 1～Fig. 3, the touch sensing device of the first type comprises a circuit board 11, and two sensing signal processing units 12, and each sensing signal processing unit 12 has a sensing signal transform engine 121 that is arranged at this circuit board 11 bottom surfaces.Wherein, this sensing signal processing unit 12 can be signal processing chip.This circuit board 11 has a substrate 111, a plurality of capacitance sensing electrode 112, a near field sensing electrode 113, and a ground connection conducting film 114.These capacitance sensing electrodes 112 and this near field sensing electrode 113 are arranged at the end face of this substrate 111, these sensing signal transform engines 121 and this ground connection conducting film 114 are arranged at the bottom surface of this substrate 111, one of them sensing signal transform engine 121 is electrically connected to these capacitance sensing electrodes 112, and another sensing signal transform engine 121 wherein is electrically connected to this near field sensing electrode 113.This ground connection conducting film 114 is positioned at these capacitance sensing electrodes 112 and this near field sensing electrode 113 belows accordingly.
when the power supply that comes from the outside is sent to these capacitance sensing electrodes 112 and this near field sensing electrode 113 through these sensing signal transform engines 121 respectively, and press one of them capacitance sensing electrode 112, or point when abutting nearly this sensing electrode 113 top, near field, one of them sensing signal transform engine 121 detects the moment change in electric value from this capacitance sensing electrode 112, or another sensing signal transform engine 121 wherein detects from the moment change in electric value that abuts nearly this near field sensing electrode 113, notify and drive again the execution of extraneous relative program by these sensing signal transform engines 121, for example light the LED light lamp (scheming not shown) that separately is disposed on this circuit board.
Due to the signal and the easy phase mutual interference of the electric signal of near field sensing electrode 113 from these capacitance sensing electrodes 112, so the touch sensing device of the first type be by two independently sensing signal transform engine 121 two kinds of different signals are separated and process respectively, to reduce the annoyance level between unlike signal.So this touch sensing device also can have single sensing signal processing unit 12, but this sensing signal processing unit 12 must have these two independently sensing signal transform engines 121.
Consult Fig. 1, Fig. 4, Fig. 5, the touch sensing device of the second type comprises a circuit board 11, and a sensing signal processing unit 13 that is arranged at this circuit board 11 bottom surfaces.This sensing signal processing unit 13 has a sensing signal transform engine 131, and a microcontroller 132 that is connected with this sensing signal transform engine 131.Wherein, this sensing signal processing unit 13 can be a signal processing chip.This circuit board 11 has a substrate 111, a plurality of capacitance sensing electrode 112, a near field sensing electrode 113, and a ground connection conducting film 114.These capacitance sensing electrodes 112 and this near field sensing electrode 113 are arranged at the end face of this substrate 111, this ground connection conducting film 114 is arranged at the bottom surface of this substrate 111, this microcontroller 132 also is electrically connected to respectively these capacitance sensing electrodes 112 and this near field sensing electrode 113 except this sensing signal transform engine 131 connects.This ground connection conducting film 114 is positioned at these capacitance sensing electrodes 112 and this near field sensing electrode 113 belows accordingly.
Because the circuit board of the touch sensing device of the circuit board of the touch sensing device of this second type and the first type is similar, so represent with identical component symbol.
when the power supply that comes from the outside is sent to this sensing signal processing unit 13, this sensing signal transform engine 131 is controlled by this microcontroller 132 and is constantly switched alternately to receive signal from these capacitance sensing electrodes 112 or this near field sensing electrode 113, when pressing one of them capacitance sensing electrode 112, or finger abuts nearly this near field sensing electrode 113 tops, and detect from this capacitance sensing electrode 112 or abut nearly this near field sensing electrode 113 moment, the change in electric value was greater than default critical value the time, the execution of extraneous relative program will be driven, for example light the LED light lamp (scheming not shown) that separately is disposed on this circuit board 11.
The sensing signal transform engine 131 of the touch sensing device of the second type is subjected to the control of microcontroller 132 and switches between two kinds of patterns of acceptance from the electric signal of this capacitance sensing electrode 112 and this near field sensing electrode 113, also just make this sensing signal transform engine 131 alternately accept and process two kinds of different types of signals by this microcontroller 132, to reduce the annoyance level between signal.
Although the touch sensing device of the first type and the second type all can operate in theory, the circuit board 11 of the touch sensing device of the first type need be vacateed many areas for two signal processing chip settings that have respectively this sensing signal transform engine 121; Even and if can install two sensing signal transform engines 121 in same signal processing chip, but this kind signal processing chip is with high costs, and the volume of signal processing chip also can increase many relatively.in addition, the signal processing chip of the touch sensing device of the second type also needs an embedded microcontroller 132 therein, and must could supply this sensing signal transform engine 131 successfully accepting two kinds of sensing electrodes 112 by the firmware program of writing complex in this signal processing chip, switch between 113 electric signal, except spending the cost of this microcontroller 132, and firmware program is complicated and outside easily makeing mistakes, the process that this sensing signal transform engine 131 constantly switches the pattern of acknowledge(ment) signal also significantly improves required electric power, and easily produce the problem of the too high and device heating of electric power.
The utility model content
The purpose of this utility model is to provide a kind of and simplifies component number and reach simultaneously touch-control sensing and the touch sensing device of near field sensing.
Therefore, another purpose of the present utility model is namely providing a kind of circuit board that reduces inter-signal interference.
Touch sensing device of the present utility model comprises a circuit board, and a sensing signal processing unit.
This circuit board comprises an insulated substrate, at least one capacitance sensing electrode, a near field sensing electrode, and a ground connection Copper Foil.
This insulated substrate has a first surface, and the second surface in contrast to this first surface.This capacitance sensing electrode is formed at this first surface.This near field sensing electrode is formed at this first surface, and with this capacitance sensing electrode gap.This ground connection Copper Foil is formed at this second surface, and this ground connection Copper Foil corresponds to the position of this first surface, be formed with this capacitance sensing electrode and with this sensing electrode interval, near field.
This sensing signal processing unit is arranged at the second surface of this substrate, and comprises at least one capacitance sensing port, a near field sensing ports, and a sensing signal transform engine.
this capacitance sensing port is electrically connected to this capacitance sensing electrode, this near field sensing ports is electrically connected to this near field sensing electrode, this sensing signal transform engine, correspond to the position of this first surface, be and this capacitance sensing electrode and this sensing electrode interval, near field, this sensing signal transform engine is electrically connected to this capacitance sensing port and this near field sensing ports, with detecting from least wherein the electric signal of one in this capacitance sensing electrode and this near field sensing electrode, to determine whether to export a notification signal, this notification signal indicates that this capacitance sensing electrode is touched or this near field sensing electrode is sensed.
Preferably, aforementioned touch sensing device, wherein, this circuit board comprises a plurality of capacitance sensing electrodes that are formed at this first surface, this sensing signal processing unit comprises a plurality of corresponding capacitance sensing ports that are electrically connected to described capacitance sensing electrode respectively.
Preferably, aforementioned touch sensing device, wherein, this circuit board also comprises an inferior near field sensing electrode that is formed at this second surface and is electrically connected to this near field sensing electrode, this time near field sensing electrode corresponds to the position of this first surface, is to be formed with this near field sensing electrode.
Preferably, aforementioned touch sensing device, wherein, this near field sensing electrode comprises that a plurality of width are not less than the main part of 1mm, reaches the adjacent main part of at least one connection and width less than the connecting portion of the width of described main part.
Preferably, aforementioned touch sensing device, wherein, this ground connection Copper Foil has a plurality of drafting departments, and at least one connects the connecting portion of described drafting department, the position that each drafting department corresponds to this first surface is formed with at least one capacitance sensing electrode, and each drafting department is formed at continuously this second surface and is made of the vacancy section of a plurality of solid areas connected to one another and a plurality of each intervals.
Preferably, aforementioned touch sensing device, wherein, the distance that this near field sensing electrode corresponds between the drafting department of the position of this second surface and this ground connection Copper Foil is not less than 1mm, and the distance between this time near field sensing electrode and this drafting department is not less than 1mm.
Preferably, aforementioned touch sensing device, wherein, the drafting department of the ground connection Copper Foil of this circuit board is latticed Copper Foil.
Preferably, aforementioned touch sensing device, wherein, this touch sensing device also comprises a plurality of LED light lamp that are arranged at this circuit board, each LED lamp have one with the first surface exiting surface in the same way of this substrate, and the corresponding at least LED light lamp of each capacitance sensing electrode, this sensing signal processing unit also comprises a plurality of luminous ports, each luminous port is electrically connected on corresponding LED light lamp separately.
Preferably, aforementioned touch sensing device, wherein, this circuit board also has one and is formed at the second surface of this substrate and transmits the power lead of electric energy, most bar and be formed at the sense wire of the second surface of this substrate, the described sense wire of a plurality of connection and be electrically connected to and run through respectively the joint pin of this substrate with described capacitance sensing electrode and this near field sensing electrode, reaches the signal wire that most bars are formed at the second surface of this substrate and the signal that described LED light lamp comes from the outside is provided.
Preferably, aforementioned touch sensing device, wherein, this near field sensing electrode corresponds to the position of this second surface and the distance between this power lead and described signal wire is not less than 1mm, and the distance between this time near field sensing electrode and this power lead and described signal wire is not less than 1mm.
Preferably, aforementioned touch sensing device, wherein, this touch sensing device also comprises one and transmits electric energy and electric signal to the signal connector of this sensing signal processing unit, and one is connected with this circuit board and couples with this sensing signal processing unit and the electric signal of sensing signal processing unit can be sent to the interface connector in the external world.
Preferably, aforementioned touch sensing device, wherein, the thickness of the substrate of this circuit board is not less than 1mm.
Moreover, circuit board of the present utility model, be applicable to arrange a sensing signal processing unit, this sensing signal processing unit has at least one capacitance sensing port and a near field sensing ports, and this circuit board comprises an insulated substrate, at least one capacitance sensing electrode, a near field sensing electrode, and a ground connection Copper Foil.
This insulated substrate has a first surface, and a second surface in contrast to this first surface.
This capacitance sensing electrode is formed at this first surface, and is electrically connected to this capacitance sensing port.
This near field sensing electrode is electrically connected to this near field sensing ports and is formed at this first surface, and with this capacitance sensing electrode gap.
This time near field sensing electrode is electrically connected to this near field sensing ports and is formed at this second surface, and this time near field sensing electrode corresponds to the position of this first surface, is to be formed with this near field sensing electrode.
This ground connection Copper Foil is formed at this second surface, and this ground connection Copper Foil corresponds to the position of this first surface, be formed with this capacitance sensing electrode and with this sensing electrode interval, near field.
The beneficial effects of the utility model are: this ground connection Copper Foil corresponds to position and this sensing electrode interval, near field of the first surface of this insulated substrate, and this sensing signal transform engine corresponds to position and described capacitance sensing electrode and this sensing electrode interval, near field of this first surface, and makes this single sensing signal transform engine can process simultaneously feedback electric signal from this near field sensing electrode and described capacitance sensing electrode.
Description of drawings
Fig. 1 is the schematic top plan view of end face of a circuit board of the present the first touch sensing device of explanation;
Fig. 2 is the explanation schematic top plan view of the bottom surface of the circuit board of this first touch sensing device at present;
Fig. 3 is the calcspar of this first touch sensing device of explanation;
Fig. 4 is the schematic top plan view of bottom surface of the circuit board of the present the second touch sensing device of explanation;
Fig. 5 is the calcspar of this second touch sensing device of explanation;
Fig. 6 is the schematic top plan view of first surface of insulated substrate of one first preferred embodiment of explanation the utility model touch sensing device;
Fig. 7 is the schematic top plan view of second surface of the insulated substrate of this first preferred embodiment of explanation;
Fig. 8 illustrates the calcspar of the utility model touch sensing device;
Fig. 9 is the schematic top plan view of first surface of substrate of one second preferred embodiment of explanation the utility model touch sensing device; And
Figure 10 is the schematic top plan view of second surface of the insulated substrate of this second preferred embodiment of explanation.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated:
Consult Fig. 6, Fig. 7, one first preferred embodiment of the utility model touch sensing device comprises a circuit board 2, sensing signal processing unit 3, a plurality of LED light lamp 4, a signal connector 5, and an interface connector 6.
This circuit board 2 comprises an insulated substrate 21, a plurality of capacitance sensing electrode 22, a near field sensing electrode 23, and a ground connection Copper Foil 24.
This insulated substrate 21 has a first surface 211, and the second surface 212 in contrast to this first surface 211.In this first preferred embodiment, this insulated substrate 21 essence rectangularities, but be not limited with rectangle, also visual demand and be triangle, circle, or polygon etc.Preferably, the thickness of this substrate is not less than 1mm.
These capacitance sensing electrodes 22 compartment of terrains are formed at the first surface 211 of this insulated substrate 21, and each capacitance sensing electrode 22 consisted of with the entity Copper Foil, namely each capacitance sensing electrode 22 zone of not having hollow out.
This near field sensing electrode 23 is formed at this first surface 211, and has an opening ground ring and enclose these capacitance sensing electrodes 22.The operating principle of this near field sensing electrode 23 is to abut by detecting the formed electric signal of line of electric force that a near sensed thing (scheming not shown) changes these sense lateral electrode 23 tops, near field, and reach the purposes of sensing, and this near field sensing electrode 23 also can coordinate the intensity of an amplifier (scheming not shown) amplification signal usually.The high sensing distance of this near field sensing electrode 23 is 1-10cm.This near field sensing electrode 23 is consisted of with the entity Copper Foil, namely this near field sensing electrode zone of not having hollow out.
This near field sensing electrode 23 has a plurality of main parts 231, and the connecting portion 232 of at least one connection two adjacent main part 231, in this first preferred embodiment, has 3 main parts 231, and two connecting portions 232.Wherein, the width of these main parts 231 is greater than the width of this connecting portion 232; Preferably, the width of these main parts 231 is not less than 1mm.Be smooth form when the outline of this insulated substrate 21 is non-, for example can't successfully be in line when extending for these main parts 231 toward sunken inside, just can be by the narrower connecting portion 232 of width, and these main parts 231 are electrically connected to each other.In this first preferred embodiment, because this insulated substrate 21 is rectangle, these near field sensing electrode 23 integral body are extended along the profile of this insulated substrate 21, form " U " font that side is fallen.
This ground connection Copper Foil 24 is formed at the second surface 212 of this insulated substrate 21, and this ground connection Copper Foil 24 corresponds to the position of the first surface 211 of this insulated substrate 21, be to be formed with at least one capacitance sensing electrode 22, and with this near field sensing electrode 23 intervals.This ground connection Copper Foil 24 has a plurality of drafting departments 241, and at least one connects the connecting portion 242 of these drafting departments 241, each drafting department 241 is formed at this second surface 212 continuously, namely be not divided into broken island structure, and by a plurality of solid areas 243 connected to one another, and the vacancy section 244 of a plurality of each intervals consists of, in this first preferred embodiment, these drafting departments 241 are latticed Copper Foil (mesh copper), preferably, these drafting departments 241 are 45 ° of netted Copper Foils.
In more detail, the position that each drafting department 241 corresponds to this first surface 211 is formed with at least one capacitance sensing electrode 22, adjacent one another are and need not place other electric devices when resistance, inductance, transistor or amplifier (for example) therebetween the time, the position that each drafting department 241 corresponds to this first surface 211 also can be formed with a plurality of capacitance sensing electrodes 22 when a plurality of capacitance sensing electrodes 22.
Wherein, each capacitance sensing electrode 22, be positioned at the insulated substrate 21 of this capacitance sensing electrode 22 belows, and be an electric capacity to the equivalent electrical circuit that ground connection Copper Foil 24 that should capacitance sensing electrode 22 matches.
This sensing signal processing unit 3 is arranged at the second surface 212 of this insulated substrate 21, and comprises a plurality of capacitance sensing ports 31, near field sensing ports 32, a plurality of luminous port 33, and single sensing signal transform engine 34.These capacitance sensing ports 31 are electrically connected to respectively these capacitance sensing electrodes 22, and this near field sensing ports 32 is electrically connected to this near field sensing electrode 23.This sensing signal transform engine 34 is electrically connected on these capacitance sensing ports 31 and this near field sensing ports 32, with the electric signal of detecting from the one at least wherein of these capacitance sensing electrodes 22 and this near field sensing electrode 23, to determine whether to export a notification signal, this notification signal indicates that this capacitance sensing electrode 22 is touched or this near field sensing electrode 23 is sensed, this sensing signal transform engine 34 corresponds to the position of this first surface 211, is and these capacitance sensing electrodes 22 and this near field sensing electrode 23 intervals.Because these sensing signal transform engine 34 self-detection electric signal are known by the person with usual knowledge in their respective areas to exporting this notification signal, no longer add to give unnecessary details at this.
This sensing signal processing unit 3 also comprises a plurality of connectivity ports 35, and these connectivity ports 35 are used for transmitting and accepting electric energy and electric signal, and for example VDD, GND, SDA, reach SCLK ... Deng.And in this first preferred embodiment, this sensing signal processing unit 3 is a sensor chip namely.
The characteristic of the setting position of this sensing signal transform engine 34 is, this sensing signal transform engine 34 corresponds to the position of this first surface 211, and these capacitance sensing electrodes 22 and this near field sensing electrode 23 intervals that when not being vulnerable to afterwards these capacitance sensing electrodes 22 with this near field sensing electrode 23 action, institute does not produce the interference of the value of electrical signals of variation significantly and affects the regular event of this sensing signal transform engine 34.In addition, this sensing signal transform engine 34 couples these capacitance sensing electrodes 22 and this near field sensing electrode 23 simultaneously by these capacitance sensing ports 31 and this near field sensing ports 32.
These LED light lamp 4 are arranged at this circuit board 2, and each luminous port 33 of this sensing signal processing unit 3 is electrically connected to corresponding LED light lamp 4.These LED light lamp 4 protrude out to this first surface 211 from the second surface 212 of this insulated substrate 21, and luminous when accepting electric energy and electric signal, and can send respectively the light of different wavelength range.Each LED light lamp 4 have one with first surface 211 exiting surface 41 in the same way of this insulated substrate 21, and corresponding at least LED light lamp 4 of each capacitance sensing electrode 22.In this first preferred embodiment, corresponding two LED light lamp 4 that wavelength coverage is different of one of them capacitance sensing electrode 22, the respectively corresponding LED light lamp 4 of remaining capacitance sensing electrode 22.
This signal connector 5 is arranged at the second surface 212 of this insulated substrate 21, is used for transmitting electric energy, the earthing potential of predetermined potential, and electric signal, and for example VDD, GND, SDA, reach SCLK ... Deng.
This interface connector 6 is arranged at a wherein side of this circuit board 2, and is electrically connected to this signal connector 5 and this sensing signal processing unit 3, and can accept and transmit electric energy and the electric signal that comes from the outside.
specifically, the circuit board 2 of this first preferred embodiment also comprises a power lead 25 that is formed at the second surface 212 of this insulated substrate 21 and transmits the electric energy with predetermined potential, article one, ground wire 20, most bars are formed at this second surface 212 and transmit these capacitance sensing electrodes 22 and the sense wire 26 of the electric signal that this near field sensing electrode 23 senses, these sense wires 26 of a plurality of connections also are electrically connected to and run through respectively the joint pin 27 (via) of this substrate with these capacitance sensing electrodes 22 and this near field sensing electrode 23, and most bars transmit electric signal to these LED light lamp 4 and drive the luminous signal wire of these LED light lamp 4 28.The potential difference (PD) that transmits due to this power lead 25 and these signal wires 28 is larger, so this power lead 25 and these signal wires 28 correspond to position and this near field sensing electrode 23 intervals of the first surface 211 of this insulated substrate 21; And preferably, this power lead 25 and these signal wires 28 distance that corresponds to 23 of the position of this first surface 211 and this near field sensing electrodes is not less than 1mm.
coordinate and consult Fig. 8, it is extraneous that (for example one for the single-chip of controlling the USB device, be used for controlling the single-chip of Ssd apparatus, or for the single-chip of controlling the screen image scaling ... Deng, general designation that this sentences " extraneous master chip ") electric energy and an electric signal (electric signal that namely is present in this extraneous master chip by firmware program) transmit electric energy to this sensing signal processing unit 3 via this interface connector 6 and this signal connector 5, and write the initial value of one group of electric signal in this sensing signal processing unit 3, and when a sensed thing (is for example pointed, or test copper rod) abut the top of nearly this near field sensing electrode 23 and can detect for this near field sensing electrode 23 apart from the time, the line of electric force of this near field sensing electrode 23 tops changes and forms the feedback electric signal of a non-touch-control, and by these sense wires 26, this joint pin 27, and this near field sensing ports 32 is sent to this sensing signal transform engine 34, this sensing signal transform engine 34 detects from the feedback electric signal of the non-touch-control of this near field sensing electrode 23 and after judging that it is greater than a critical value, export a notification signal to extraneous master chip, this notification signal indicates this near field sensing electrode 23 sensed, extraneous master chip accept to transmit again after this notification signal drive the luminous relevant executive routine of these LED light lamp 4 signal through this interface connector 6 to this sensing signal processing unit 3, afterwards drive these LED light lamp 4 luminous.
when this sensed thing presses one of them capacitance sensing electrode 22, the capacitance of this capacitance sensing electrode 22 produces and changes and form the feedback electric signal of a touch-control, and by these sense wires 26, this corresponding joint pin 27, and this corresponding capacitance sensing port 31 is sent to this sensing signal transform engine 34, this sensing signal transform engine 34 detects from the feedback electric signal of the touch-control of this capacitance sensing sensing electrode 22 and after judging that it is greater than this critical value, export a notification signal to extraneous master chip, this notification signal indicates this capacitance sensing electrode 22 sensed, extraneous master chip transmits the signal that drives the relevant executive routine of LED light lamp 4 that should capacitance sensing electrode 22, again through this interface connector 6 to this sensing signal processing unit 3, afterwards make this LED light lamp 4 luminous.
Also it should be noted that at this, this first preferred embodiment is luminous for these LED light lamp 4 accepting extraneous relevant executive routine.The driven element of other types also can be set to replace these LED light lamp, for example loudspeaker, or incandescent lamp bulb on this touch sensing device.
this first preferred embodiment corresponds to position and this near field sensing electrode 23 intervals of the first surface 211 of this insulated substrate 21 by (1) this ground connection Copper Foil 24, and (2) this sensing signal transform engine 34 corresponds to the special set-up mode at the position of this first surface 211 and these capacitance sensing electrodes 22 and this near field sensing electrode 23 intervals, and this single sensing signal transform engine 34 can be processed simultaneously from the feedback electric signal of this near field sensing electrode 32 with these capacitance sensing electrodes 31, and do not need as present touch sensing device, also need couple in addition a microcontroller, or 2 sensing signal transform engines that are electrically connected to respectively these capacitance sensing electrodes and this near field sensing electrode are set, can successfully move smoothly for this first preferred embodiment, moreover, from the feedback electric signal of these capacitance sensing electrodes 22 and this near field sensing electrode 23 can this sensing signal transform engine 34 of phase mutual interference running.
Further, the main part 231 that also has wider width due to the near field sensing electrode 23 of this first preferred embodiment, and the position that this main part 231 corresponds to this second surface 212 positively with drafting department 41 intervals of this ground connection Copper Foil 24, and can when strengthening near field sensing acuity, reduce the interference of the line of electric force of 24 pairs of these near field sensing electrodes 23 of ground connection Copper Foil.
Moreover, be not less than the preset distance of 1mm because transmit the larger power lead 25 of potential difference (PD) and these signal wires 28 and 23 maintenances of this near field sensing electrode in this circuit board 2, and then effectively reduce the interference of the line of electric force of this power lead 25 and 28 pairs of these near field sensing electrodes 23 of these signal wires.
In addition, the drafting department with vacancy section 244 241 of this ground connection Copper Foil 24 is avoided the problem that the excessive line of electric force that causes this near field sensing electrode 23 to be used for sensing of electric field of 24 of 23 pairs of these ground connection Copper Foils of this near field sensing electrode is interfered effectively; And because these drafting departments 241 are formed at this second surface 212 continuously, but not be split to form broken shape, and then effectively form the reference potential of ground connection.
Especially also it should be noted that, this circuit board 2 also can only comprise a capacitance sensing electrode 22, and this sensing signal processing unit 3 has one to capacitance sensing port 31 that should capacitance sensing electrode 22, and the capacitance variations value in the time of still can be touched by this capacitance sensing electrode 22 transmits the feedback electric signal of this touch-control to this sensing signal transform engine 34.At this moment, this ground connection Copper Foil 24 has one to drafting department 241 that should capacitance sensing electrode 22.
Consult Fig. 9, Figure 10, one second preferred embodiment for the utility model touch sensing device, this second preferred embodiment is similar to this first preferred embodiment, and its difference is in the circuit board 2 of this second preferred embodiment and also has an inferior near field sensing electrode 29 that is formed at the second surface 212 of this insulated substrate 21.
This time near field sensing electrode 29 corresponds to the position of the first surface 211 of this insulated substrate 21, be to be formed with this near field sensing electrode 23, and this near field sensing electrode 23 is electrically connected to by these joint pins 27 with 29 of this time near field sensing electrodes.Preferably, the distance of 28 of this time near field sensing electrode 29 and this power lead 25 and these signal wires is not less than 1mm.
The manner of execution of the manner of execution of this second preferred embodiment and this first preferred embodiment is similar, and also utilizes this time near field sensing electrode 29, and then strengthens this near field sensing acuity, and reduces the interference of the line of electric force of 24 pairs of near field sensings of this ground connection Copper Foil.
Especially, this first preferred embodiment and this second preferred embodiment also can comprise an overlay (scheme not shown) that is covered in this circuit board top, reach a sticker.This overlay is insulating material, and and this circuit board between link by this sticker, this sticker is selected from the insulation sticky material, double sticky tape for example, this overlay can be glass or plastic cement.
In order to make action of the present utility model more concrete, it is below the concrete example of this second preferred embodiment.
[concrete example]
This circuit board is the two-layer printed circuit board (PCB), and general rectangularity, and its length is 130mm, and width is 12mm, and the thickness of this substrate is 1.6mm.
6 capacitance sensing electrodes and near field sensing electrode are formed at the first surface of this substrate.The width of the main part of this near field sensing electrode is 1.5mm, and the long limit that is arranged at respectively this substrate reaches a wherein minor face, and these adjacent main parts connect with connecting portion, and these connecting portions are the interior recesses that are formed at the long frame of this substrate, whole " U " font that becomes side to fall of this near field sensing electrode.The scope that this near field sensing electrode can be detectd side is 1-10cm, and looks closely the size of this sensed thing and decide.
This ground connection Copper Foil is formed at the second surface of this substrate, and wherein, the position that the drafting department of this ground connection Copper Foil corresponds to this first surface is formed with 5 capacitance sensing electrodes, and all the other 1 capacitance sensing electrodes are corresponding is the connecting portion of ground connection Copper Foil.
This power lead, these sense wires, and these signal wires are formed at the second surface of this substrate, and this power lead and these signal wires correspond to position and this sensing electrode interval, near field of this first surface.
These LED light lamp correspondence respectively are arranged in these capacitance sensing electrodes, and these exiting surfaces and this first surface are in the same way, this concrete example has 7 LED light lamp, wherein 6 identical LED light lamp of wavelength coverage are arranged at respectively these capacitance sensing electrodes accordingly, and all the other 1 LED light lamp are arranged in the capacitance sensing electrode of side.
This signal connector is mainly to transmit electric energy (VCC, VDD), the earthing potential (GND) that comes from the outside, to the signal (SDA, SCLK) of relevant executive routine.
This interface connector is the I2C bus, is arranged at a side of this circuit board.
This sensing signal processing unit is a push button signalling process chip, has 25 ports (port).The built-in register of this push button signalling process chip can record the function setting of electric signal and general connectivity port (GPIO).This push button signalling process chip has 13 sensing ports, 11 connectivity ports, and interruptive port, this interruptive port transmits electric signal to extraneous master chip by the I2C bus, these sensing ports are respectively used to connect this near field sensing electrode (being the near field sensing ports), these 6 capacitance sensing electrodes (being the capacitance sensing port), reach wherein 6 LED light lamp (being luminous port).All the other 10 ports connect respectively a remaining LED light lamp, and it is required and be formed at the resistance of this second surface and electric capacity, electric capacity of voltage regulation to adjust the sensing degree, and be electrically connected on this signal connector and I2C bus to transmit and to accept extraneous electric energy, earthing potential, reach data signal.
When these sensing ports detect that electric signal changes and when event occurs, interruptive port is converted to electronegative potential with the notice master chip from noble potential, and master chip learns that by the register that reads this push button signalling process chip which electrode is triggered, and then carries out relative program.
[course of action of concrete example]
When the energising of the master chip in the external world and after opening, transmit electric energy to the push button signalling process chip by I2C bus and this signal connector, initial value when by the I2C bus, master chip being opened simultaneously writes in the register of push button signalling process chip, accept sensing to start these capacitance sensing electrodes and near field sensing electrode, complete simultaneously the setting parameter of GPIO and can drive these LED light lamp when accepting electric signal.
When a sensed thing is positioned at the sensing range of this near field sensing electrode and this time near field sensing electrode cooperation formation, the sensing signal transform engine of push button signalling process chip sends a look-at-me (INT) and is sent to master chip, during the notified electric signal from the near field sensing of this master chip, this master chip startup supplies these LED light lamp luminous relevant execution of program instructions simultaneously simultaneously, and be sent to the register of this push button signalling process chip by the I2C bus, then it is luminous to drive simultaneously these LED light lamp according to the program that is stored in register; When the sensing range of sensed thing away from this near field sensing electrode and this time near field sensing electrode cooperation formation, these LED light lamp are closed.
be positioned at the sensing range of this near field sensing electrode and this time near field sensing electrode cooperation formation when this sensed thing, and when continuing to abut nearly one of them capacitance sensing electrode, the sensing signal transform engine of push button signalling process chip first send a look-at-me (INT) be sent to this master chip (this moment interruptive port be converted to electronegative potential to notify this master chip from noble potential, after this master chip is received this look-at-me, remove one of push button signalling process chip via the I2C bus immediately and hang flag (clear pending flag), allow interruptive port return to noble potential (release INT) from electronegative potential), and this master chip also reads the electric signal of " this sensed thing is positioned at the state of near field sensing range " in the register (Button Status Register) of this push button signalling process chip by the I2C bus, just can learn that this near field sensing electrode is triggered, afterwards, when this sensed thing continues to abut near and presses one of them capacitance sensing electrode, this sensing signal transform engine sends next look-at-me (INT) again and is sent to this master chip, and this master chip is except removing the suspension flag of push button signalling process chip by the I2C bus, allow interruptive port return to noble potential from electronegative potential, also read the electric signal of " state that this capacitance sensing electrode is touched " in the register of this push button signalling process chip, can learn just which capacitance sensing electrode is by touch-control, then, drive again the relevant execution of program instructions of single LED light lamp to the register of this push button signalling process chip, continue to start again the LED light lamp of corresponding touched capacitance sensing electrode according to the program that is stored in register, and close remaining LED light lamp.
in sum, ground connection Copper Foil of the present utility model corresponds to position and this sensing electrode interval, near field of this first surface, and this sensing signal transform engine corresponds to the position of this first surface, with this near field sensing electrode and these capacitance sensing electrode gap, in addition, the position that this power lead and these signal wires correspond to this first surface also with this sensing electrode interval, near field, and then make single sensing signal transform engine can process simultaneously signal from this near field sensing electrode and these capacitance sensing electrodes, and not disturbed by signal to each other, so really can reach the purpose of this utility model.
Below only add with regard to concrete constructed embodiment of the present utility model and give explanation, under without separated structure of the present utility model and spirit, allly be skillful in those skilled in the art scholar, still can do all variations and modification, all this changes and still is considered as being encompassed in the following claim of this case with modifying.
Claims (13)
1. a touch sensing device, is characterized in that, comprises:
A circuit board comprises:
An insulated substrate has a first surface, and the second surface in contrast to this first surface;
At least one capacitance sensing electrode is formed at this first surface;
A near field sensing electrode is formed at this first surface, and with this capacitance sensing electrode gap; And
A ground connection Copper Foil is formed at this second surface, and this ground connection Copper Foil corresponds to the position of this first surface, be formed with this capacitance sensing electrode and with this sensing electrode interval, near field; And
One sensing signal processing unit is arranged at the second surface of this substrate, and comprises:
At least one capacitance sensing port is electrically connected to this capacitance sensing electrode;
A near field sensing ports is electrically connected to this near field sensing electrode; And
A sensing signal transform engine, correspond to the position of this first surface, be and this capacitance sensing electrode and this sensing electrode interval, near field, this sensing signal transform engine is electrically connected to this capacitance sensing port and this near field sensing ports, with detecting from least wherein the electric signal of one in this capacitance sensing electrode and this near field sensing electrode, determining whether to export a notification signal, this notification signal indicates that this capacitance sensing electrode is touched or this near field sensing electrode is sensed.
2. touch sensing device as claimed in claim 1, it is characterized in that: this circuit board comprises a plurality of capacitance sensing electrodes that are formed at this first surface, and this sensing signal processing unit comprises a plurality of corresponding capacitance sensing ports that are electrically connected to described capacitance sensing electrode respectively.
3. touch sensing device as claimed in claim 2, it is characterized in that: this circuit board also comprises an inferior near field sensing electrode that is formed at this second surface and is electrically connected to this near field sensing electrode, this time near field sensing electrode corresponds to the position of this first surface, is to be formed with this near field sensing electrode.
4. touch sensing device as claimed in claim 3, it is characterized in that: this near field sensing electrode comprises that a plurality of width are not less than the main part of 1mm, and at least one connects adjacent main part and width less than the connecting portion of the width of described main part.
5. touch sensing device as claimed in claim 4, it is characterized in that: this ground connection Copper Foil has a plurality of drafting departments, and at least one connects the connecting portion of described drafting department, the position that each drafting department corresponds to this first surface is formed with at least one capacitance sensing electrode, and each drafting department is formed at continuously this second surface and is made of the vacancy section of a plurality of solid areas connected to one another and a plurality of each intervals.
6. touch sensing device as claimed in claim 5, it is characterized in that: the distance that this near field sensing electrode corresponds between the drafting department of the position of this second surface and this ground connection Copper Foil is not less than 1mm, and the distance between this time near field sensing electrode and this drafting department is not less than 1mm.
7. touch sensing device as claimed in claim 6, it is characterized in that: the drafting department of the ground connection Copper Foil of this circuit board is latticed Copper Foil.
8. touch sensing device as claimed in claim 7, it is characterized in that: this touch sensing device also comprises a plurality of LED light lamp that are arranged at this circuit board, each LED lamp has a first surface exiting surface in the same way with this substrate, and corresponding at least LED light lamp of each capacitance sensing electrode, this sensing signal processing unit also comprises a plurality of luminous ports, and each luminous port is electrically connected on corresponding LED light lamp separately.
9. touch sensing device as claimed in claim 8, it is characterized in that: this circuit board also has the power lead that is formed at the second surface of this substrate and transmits electric energy, a most bar and is formed at the sense wire of the second surface of this substrate, the described sense wire of a plurality of connection and is electrically connected to and runs through respectively the joint pin of this substrate with described capacitance sensing electrode and this near field sensing electrode, reaches the signal wire that most bars are formed at the second surface of this substrate and the signal that described LED light lamp comes from the outside is provided.
10. touch sensing device as claimed in claim 9, it is characterized in that: this near field sensing electrode corresponds to the position of this second surface and the distance between this power lead and described signal wire is not less than 1mm, and the distance between this time near field sensing electrode and this power lead and described signal wire is not less than 1mm.
11. touch sensing device as claimed in claim 10, it is characterized in that: this touch sensing device also comprises one and transmits electric energy and electric signal to the signal connector of this sensing signal processing unit, and one is connected with this circuit board and couples with this sensing signal processing unit and the electric signal of sensing signal processing unit can be sent to the interface connector in the external world.
12. touch sensing device as claimed in claim 11 is characterized in that: the thickness of the substrate of this circuit board is not less than 1mm.
13. circuit board, be applicable to arrange a sensing signal processing unit, this sensing signal processing unit has at least one capacitance sensing port and a near field sensing ports, it is characterized in that, this circuit board comprises: an insulated substrate, have a first surface, and the second surface in contrast to this first surface; At least one capacitance sensing electrode is formed at this first surface, and is electrically connected to this capacitance sensing port; A near field sensing electrode is electrically connected to this near field sensing ports and is formed at this first surface, and with this capacitance sensing electrode gap; A time near field sensing electrode is electrically connected to this near field sensing ports and is formed at this second surface, and this time near field sensing electrode corresponds to the position of this first surface, is to be formed with this near field sensing electrode; And a ground connection Copper Foil, be formed at this second surface, this ground connection Copper Foil corresponds to the position of this first surface, be formed with this capacitance sensing electrode and with this sensing electrode interval, near field.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101219322U TWM455207U (en) | 2012-10-05 | 2012-10-05 | Touch sensing device and circuit board |
| TW101219322 | 2012-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202976048U true CN202976048U (en) | 2013-06-05 |
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ID=48517095
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220686952 Expired - Lifetime CN202976048U (en) | 2012-10-05 | 2012-12-12 | Touch sensing device and circuit board |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202976048U (en) |
| TW (1) | TWM455207U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713783A (en) * | 2012-10-05 | 2014-04-09 | 迅杰科技股份有限公司 | Touch sensing device and circuit board |
-
2012
- 2012-10-05 TW TW101219322U patent/TWM455207U/en unknown
- 2012-12-12 CN CN 201220686952 patent/CN202976048U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713783A (en) * | 2012-10-05 | 2014-04-09 | 迅杰科技股份有限公司 | Touch sensing device and circuit board |
| CN103713783B (en) * | 2012-10-05 | 2016-07-27 | 迅杰科技股份有限公司 | Touch sensing device and circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM455207U (en) | 2013-06-11 |
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| AV01 | Patent right actively abandoned |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |