CN207586894U - Touch screen and touch-screen system based on surface electromagnetic wave - Google Patents
Touch screen and touch-screen system based on surface electromagnetic wave Download PDFInfo
- Publication number
- CN207586894U CN207586894U CN201721124770.2U CN201721124770U CN207586894U CN 207586894 U CN207586894 U CN 207586894U CN 201721124770 U CN201721124770 U CN 201721124770U CN 207586894 U CN207586894 U CN 207586894U
- Authority
- CN
- China
- Prior art keywords
- electromagnetic wave
- surface electromagnetic
- dielectric substrate
- touch screen
- touch
- 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.)
- Withdrawn - After Issue
Links
- 239000000758 substrate Substances 0.000 claims abstract description 108
- 230000000644 propagated effect Effects 0.000 claims abstract description 22
- 230000000737 periodic effect Effects 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000954 Polyglycolide Polymers 0.000 claims description 3
- 239000002322 conducting polymer Substances 0.000 claims description 3
- 229920001940 conductive polymer Polymers 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000004633 polyglycolic acid Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 230000005684 electric field Effects 0.000 description 11
- 238000010897 surface acoustic wave method Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000010358 mechanical oscillation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000006854 communication Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000686 essence Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101100536251 Mus musculus Tmem120a gene Proteins 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model provides a kind of touch screen and touch-screen system based on surface electromagnetic wave, and the touch screen based on surface electromagnetic wave of the utility model includes dielectric substrate；Surface electromagnetic wave input unit that is multiple, the electromagnetic wave of outside generation being coupled and formed with composition surface electromagnetic wave in dielectric substrate set on dielectric substrate side；The surface electromagnetic wave of specific frequency is made to form the periodic conductor pattern propagated along dielectric substrate auto-collimation set on the adapting to the structure of dielectric substrate of dielectric substrate；And relative to surface electromagnetic wave input unit, the opposite side set on dielectric substrate, and form the surface electromagnetic wave output unit being coupled to receive correspondingly to surface electromagnetic wave between surface electromagnetic wave input unit.The touch screen based on surface electromagnetic wave of the utility model can be simplified the making of touch-screen system and calibration process, can increase the scope of application of touch screen, and make the resolution ratio of touch screen adjustable, and with good practicability.
Description
Technical field
The utility model is related to touch screen technology field, and more particularly to a kind of touch screen based on surface electromagnetic wave, the utility model is also
It is related to the touch-screen system that a kind of application has the touch screen based on surface electromagnetic wave.
Background technology
With the development and progress of science and technology, touch screen becomes a kind of common and indispensable device, is widely used in
In the electronics such as mobile phone, TV, computer, printer and control panel.Currently used touch screen mainly have condenser type, resistance-type,
Surface acoustic wave and infrared touch panel.Wherein condenser type and resistive touch screen are by detecting the direct telecommunications at touch location
Number variation determine specific touch location, can have a good accuracy, and projecting type capacitor screen and a surface capacitance
The release of screen then realizes the function of multiple spot while detection.
Touch screen based on surface acoustic wave detection is that specific touch is confirmed by detecting the variation of the intensity of acoustic wave of touch place
Touch position.Surface acoustic wave be it is a kind of along elastomeric material surfaces propagate and amplitude with the wave for going deep into case depth exponential damping, in spy
It can accomplish along straightline propagation on fixed substrate, wherein specific substrate refers to the substrate with piezoelectric properties, because of the work of sound wave
With the mechanical oscillation that mechanism is substance, mechanical oscillation of the ultrasonic wave when surface is propagated are converted into electricity by the acting as of piezoelectric substrate
Signal, in other words, the propagation of surface acoustic wave is a kind of continuous vibrocompression and the process of decompression.To the mechanical oscillation
The contact of the influential object of journey causes to propagate the variation of end electric signal, is mapped in reference axis to realize to corresponding
Contact position detection.
Touch location is confirmed by detecting the variation of the infrared signal of touch place based on the touch screen of infrared detection method,
Its touch in the upper any object that can be scattered or absorb infrared signal of application can be identified.
Although existing condenser type, resistance-type, surface acoustic wave and infrared type touch screen can realize touch function, and obtain
Using, but its still there is following deficiencies：
1st, existing condenser type and resistive touch screen are multi-layer touch screen, and calibration process is complicated, and light transmission is poor, are touched
It is low and touch screen surface is fragile to touch screen resolution ratio；
2nd, existing surface acoustic wave touch screen, which cannot be made, is fully sealed device, meanwhile, surface acoustic wave touch screen
Irregular adjustment is needed, and its product size is also limited；
3rd, existing infrared type touch screen is excessively sensitive, and touch screen resolution ratio is not high, can limit its application.
Utility model content
In view of this, the utility model is directed to a kind of touch screen based on surface electromagnetic wave, can obtain a kind of be applicable in
The touch screen that range is wide, resolution ratio is adjustable and technique is relatively simple.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of touch screen based on surface electromagnetic wave, including：
Dielectric substrate；
Multiple surface electromagnetic wave input units, set on the dielectric substrate side, to form the electromagnetic wave to outside generation
In the coupling of the dielectric substrate, and form surface electromagnetic wave；
Periodic conductor pattern, set on the dielectric substrate, the characteristic size of each conductive pattern is sub- wave
Long size, and the conductive pattern is configured to adapt to the structure of the dielectric substrate, and input the surface electromagnetic wave
The surface electromagnetic wave of the specific frequency of unit input is formed to be propagated along the auto-collimation of the dielectric substrate；
Multiple surface electromagnetic wave output units, relative to the surface electromagnetic wave input unit, set on the dielectric substrate
Opposite opposite side and form the one-to-one correspondence between the surface electromagnetic wave input unit, the surface electromagnetic wave is defeated
Go out unit and form being coupled to receive and being carried out outward to the surface electromagnetic wave of the reception for the surface electromagnetic wave propagated to auto-collimation
The conductance in portion goes out.
Further, the protective layer having on the conductive pattern side covered in the dielectric substrate is further included；Institute
It states protective layer to be made of transparent or nontransparent material, and the thickness of the protective layer is 0~1cm.
Further, the relative dielectric constant of the dielectric substrate is 1~100.
Further, the dielectric substrate is made of transparent or nontransparent material.
Further, the material of the conductive pattern includes metal, graphene, Polyglycolic acid fibre and conducting polymer
Object.
Further, the figure of the conductive pattern includes concave polygon, convex polygon, circle, ellipse and graftal
Shape.
Further, the fundamental figure of the fractal graph includes square, diamond, cross, H-shaped and I-shaped.
Further, each conductive pattern is arranged on a rectangular area for being formed in the dielectric substrate
It is interior, and the length of side of each rectangular area is 50nm~10cm, each rectangular area is mutually separated.
Further, include can be to surface electricity for the surface electromagnetic wave input unit and the surface electromagnetic wave output unit
The gradient that magnetic wave is coupled surpasses surface, microstrip line.
Further, the opposite sides in each direction in the mutually orthogonal both direction of the dielectric substrate is set respectively
It is equipped with the surface electromagnetic wave input unit of corresponding arrangement and the surface electromagnetic wave output unit.
Relative to the prior art, the utility model has the advantage that：
The touch screen based on surface electromagnetic wave of the utility model is propagated by using the auto-collimation of the surface electromagnetic wave of input,
And absorption and scattering of the touching object to surface electromagnetic wave, and caused by surface electromagnetic wave signal attenuation, so as to by sending out
Coordinate corresponding to the propagation path of the surface electromagnetic wave of raw attenuation obtains the position coordinates of touch point, to provide a kind of new base
In the touch screen of surface electromagnetic wave.
Meanwhile the touch screen based on surface electromagnetic wave of the utility model, it is based on realizing electromagnetic surface wave auto-collimation people
Work surpasses surface texture, i.e., the agent structure that periodical conductive pattern is formed by dielectric substrate and thereon is, it can be achieved that single layer structure
Characteristic, so as to effectively simplify making and the calibration process of touch screen.
And by adjusting the structural parameters of dielectric substrate and conductive pattern, the performance of touch screen can be changed in the utility model, not only
It can realize the adjusting of touch screen resolution ratio, the working frequency of touch screen can be also adjusted, can increase it with this is applicable in model
It encloses.
In addition, being different from surface acoustic wave in the surface electromagnetic wave principle of the utility model, surface acoustic wave is a kind of mechanical oscillation, and
Surface electromagnetic wave is a kind of is present between two kinds of material interfaces with differing dielectric constant, and edge refers to perpendicular to interface direction
Number attenuation, the electromagnetic wave propagated in the form of quasi wave, the essence of surface electromagnetic wave is still electromagnetic wave, i.e., by perpendicular to propagation
The wave that the electric field of the same phase in direction and the interaction in magnetic field generate.Above-mentioned principle determines that surface acoustic wave depends on piezoresistive material
Material, and surface electromagnetic wave only relies upon the relative dielectric constant of material, therefore the application range of electromagnetic surface wave is wider, non-piezoelectric
Material such as liquid etc. can also be used as the substrate of surface electromagnetic wave appearance, this, which causes surface electromagnetic wave can be applied to, much has liquid
In the position detection of body environment.
In addition, on detecting material, the surface electromagnetic wave of the utility model also makes a big difference with surface acoustic wave, surface electromagnetism
Wave is sensitive to the dielectric constant of substance, so as to be accomplished by the relative dielectric constant for adjusting surface electromagnetic wave attenuation side medium
Detection to the substance with differing dielectric constant, to increase the alternative and accuracy of detection.And surface electromagnetic wave
Phase velocity is significantly larger than ultrasonic surface, and for surface electromagnetic wave also with no scattering, this can just reduce table at the operating frequencies
Energy loss during the Electromagnetic Wave Propagation of face, so as to may be such that surface electromagnetic wave is more advantageous to the position sensing of large area.
To sum up, the utility model touch screen uses surface electromagnetic wave mode, can simplify touch screen making and calibration process, can have
There is the larger scope of application, the loss in communication process can be reduced and also be able to effectively keep away using the characteristic of surface electromagnetic wave
Exempt from the interference of sound wave and electromagnetic wave in environment, and have good practicability.
The another object of the utility model is to propose a kind of touch-screen system, including：
Touch screen based on surface electromagnetic wave as described above；
Electromagnetic wave generation unit is connect with the surface electromagnetic wave input unit, to generate the electromagnetic wave of specific frequency simultaneously
It is transmitted in the surface electromagnetic wave input unit；
Recognition unit is connect with the surface electromagnetic wave output unit, and the recognition unit is used for the surface electromagnetism
The intensity for the surface electromagnetic wave that wave output unit is received is detected, and surface electromagnetic wave intensity is reduced more than nominal threshold value
The surface electromagnetic wave output unit corresponding to coordinate of the coordinate as touch point.
Further, the coordinate of the touch point is along the one-dimensional coordinate on a direction of the dielectric substrate or institute
The coordinate for stating touch point is along the two-dimensional coordinate on two orthogonal directions of the dielectric substrate.
The utility model based on the touch-screen system of surface electromagnetic wave by using the touch based on surface electromagnetic wave as above
Screen can be simplified the making of touch-screen system and calibration process, can also increase the scope of application of touch screen, and to touch
The resolution ratio for touching screen is adjustable, has good practicability.
Description of the drawings
The attached drawing for forming the part of the utility model is used for providing further understanding the utility model, the schematic reality of the utility model
Example and its explanation are applied for explaining the utility model, does not form the improper restriction to the utility model.In the accompanying drawings：
Fig. 1 is the structure diagram of the touch screen based on surface electromagnetic wave described in the utility model embodiment；
Fig. 2 is a kind of example arrangement of the microstrip line described in the utility model embodiment；
Fig. 3 surpasses a kind of example arrangement on surface for the gradient described in the utility model embodiment；
Fig. 4 is a kind of example arrangement of the conductive pattern described in the utility model embodiment；
Fig. 5 is the side view of the dielectric substrate and conductive pattern described in the utility model embodiment；
Fig. 6 is dielectric substrate and conductive pattern geometric parameter is Dx=Dy=5mm, a=2mm, b=c=3.8mm, w1=
W2=w3=0.4mm, h=1mm, t=35 μm, and dielectric substrate relative dielectric constant be 16 when energy band isofrequency map；
Fig. 7 is the structure diagram of the touch screen sample described in the utility model embodiment；
Fig. 8 is x directions input frequency amplitude distribution of electric field Ex components and along y when being 6.34GHz frequencies along Fig. 7
The amplitude distribution of electric field Ex components when direction input frequency is 11.12GHz；
Fig. 9 is the structure diagram of the dielectric cylinder described in the utility model embodiment；
Figure 10 is the schematic diagram that the dielectric cylinder described in the utility model embodiment is positioned on propagation path；
Figure 11 is positioned over the schematic diagram of propagation path both sides for the dielectric cylinder described in the utility model embodiment；
Figure 12 is the dielectric cylinder difference for inputting difference relative dielectric constant when frequency is 6.34GHz in the x-direction along Fig. 7
It the ratio of output signal and input signal (S21) and is inputted in the y-direction when being placed on position as shown in Figure 10 and Figure 11
When the dielectric cylinder of difference relative dielectric constant is individually positioned in position as shown in Figure 10 and Figure 11 when frequency is 11.12GHz
The ratio of output signal and input signal (S21)；
Figure 13 is dielectric substrate and conductive pattern geometric parameter is Dx=Dy=5mm, a=1.4mm, b=c=3.8mm,
W1=w2=w3=0.4mm, h=1mm, t=35 μm, and bottom plate relative dielectric constant be 16 when energy band isofrequency map；
Figure 14 is in the sample under Figure 13 geometric parameters, inputs electric field Ex components when frequency is 6.95GHz frequencies in the x-direction
Amplitude distribution and in the y-direction input frequency be 11.28GHz when electric field Ex components amplitude distribution；
Figure 15 is in the sample under Figure 13 geometric parameters, and it is normal with respect to dielectric to input difference when frequency is 6.95GHz in the x-direction
The ratio of output signal and input signal (S21) when several dielectric cylinders is individually positioned in position as shown in Figure 10 and Figure 11,
And in the y-direction input frequency be 11.25GHz when difference relative dielectric constant dielectric cylinder be individually positioned in such as Figure 10 and figure
The ratio (S21) of output signal and input signal during position shown in 11；
Figure 16 is dielectric substrate and conductive pattern geometric parameter is Dx=Dy=5mm, a=2mm, b=c=3.8mm, w1
=w2=w3=0.4mm, h=1mm, t=35 μm, and dielectric substrate relative dielectric constant be 3 when energy band isofrequency map；
Figure 17 is dielectric substrate and conductive pattern geometric parameter is Dx=Dy=5mm, a=2mm, b=c=3.8mm, w1
=w2=w3=0.4mm, h=1.2mm, t=35 μm, and dielectric substrate relative dielectric constant be 3 when energy band isofrequency map；
Figure 18 is dielectric substrate and conductive pattern geometric parameter is Dx=Dy=1mm, a=0.4mm, b=c=0.76mm,
W1=w2=w3=0.08mm, h=0.2mm, t=35 μm, the isofrequency map of energy band when dielectric substrate relative dielectric constant is 3；
Figure 19 is in the sample under Figure 18 geometric parameters, inputs Ex points of electric field when frequency is 63.35GHz frequencies in the x-direction
The amplitude distribution of amount and the amplitude distribution for inputting electric field Ex components when frequency is 120.5GHz in the y-direction；
Reference sign：
1- dielectric substrates, 2- conductive patterns, 3-x to input unit, 4-y to input unit, 5-x to output unit, 6-y to
Output unit, 7- protective layers, 8- dielectric cylinders, 9- metals, 10- sheet metals, 11- sub-wavelength structures.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the utility model can phase
Mutually combination.
The utility model is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment one
The present embodiment is related to a kind of touch screen based on surface electromagnetic wave, and touch screen that should be based on surface electromagnetic wave is (referred to as
For touch screen) dielectric substrate is generally comprised, it is arranged on the periodic conductor pattern of dielectric substrate and is set to dielectric
Multiple surface electromagnetic wave input units of substrate side and it is located at the another of dielectric substrate relative to the surface electromagnetic wave input unit
Side, and with the one-to-one surface electromagnetic wave output unit of surface electromagnetic wave input unit.
Wherein, dielectric substrate constitutes the arrying main body of touch screen, and surface electromagnetic wave input unit is used to generate outside
Electromagnetic wave be coupled in the surface of dielectric substrate, and then form surface electromagnetic wave.The dielectric substrate can be preferably to use to have
The platy structure of dielectric property.The periodicity namely conductive pattern of conductive pattern have repeatability in one or two dimension,
The setting of the periodic conductor pattern of the present embodiment can adapt to the structure of dielectric substrate, and cause surface electromagnetic wave input unit
Surface electromagnetic wave under the specific frequency of coupling input is formed to be propagated along the auto-collimation of dielectric substrate.Meanwhile the present embodiment
Characteristic size of the characteristic size also for sub-wavelength dimensions namely single conductive pattern of each conductive pattern be less than surface electromagnetism
The wavelength of wave.
Specifically, the structure of dielectric substrate includes the relative dielectric constant of dielectric substrate and the size of dielectric substrate etc.
Parameter, and term " adapting to " then represents that conductive pattern coordinates with the dielectric substrate under Different structural parameters, it can be achieved that auto-collimation
The frequency of the surface electromagnetic wave of propagation is also different, and dielectric substrate and the conductive pattern of specific structure parameter correspond to specific frequency
Rate can auto-collimation propagate surface electromagnetic wave.Certainly, in addition to the structure of dielectric substrate difference, and make the surface of auto-collimation propagation
The frequency of electromagnetic wave is different, is somebody's turn to do " adapting to " and also includes when structure (the shape and/or size) variation of conductive pattern, auto-collimation
The frequency of the surface electromagnetic wave of propagation can also change.Conductive pattern or dielectric substrate structure change lead to the surface that auto-collimation is propagated
The situation of wave frequency variation, will introduce in greater detail below.
Corresponding with the surface electromagnetic wave input unit of coupling input surface electromagnetic wave, surface electromagnetic wave output unit is used
In being coupled to receive for the surface electromagnetic wave propagated auto-collimation, and surface electromagnetic wave output unit can also be by the surface electromagnetism of reception
Wave is converted into electric signal and realizes to go out to external conductance, can identify that facility realizes the surface electromagnetic wave received by external with this
The detection of intensity.In addition, as a preferred embodiment, surface electromagnetic wave input unit and correspondence positioned at two opposite sides in the present embodiment
Surface electromagnetic wave output unit, be set as being both provided in the mutually orthogonal both direction of dielectric substrate.
Based on overall structure as above, a kind of example arrangement of the touch screen of the present embodiment as shown in fig. 1, dielectric base
Bottom 1 is located at bottom, and periodic conductor pattern 2 is arranged on 1 one side end face of dielectric substrate, and in being repeated in two dimensions, and position
In 1 side of dielectric substrate surface electromagnetic wave input unit specifically by being separately positioned on dielectric substrate 1 with y directions in the x-direction
X at two adjacent side edges is formed to input unit 3 and y to input unit 4, and corresponding surface electromagnetic wave output unit is then
X at from other two lateral edges for being located at dielectric substrate 1 is formed to output unit 5 and y to output unit 6.X directions and y side
Upward input unit and output unit be arranged side by side with it is multiple, and between the input unit and output unit in all directions
Form one-to-one relationship.
Be in the present embodiment conductive pattern 2 to being set in dielectric substrate 1 and each surface electromagnetic wave input unit and
Surface electromagnetic wave output unit is protected, and to avoid its destruction that has an accident, conductive pattern 2 is disposed in dielectric substrate 1
A side end face on protective layer 7 can be also set, protective layer 7 is directly covered in dielectric substrate 1.Protective layer in the present embodiment
7 can be used transparent or nontransparent material on material, as it can be used such as nano-glass, high molecular polythene, nano ceramics
Deng high molecule nano material or quartz, the materials such as polypropylene film, tempering film.In addition, its thickness in setting of protective layer 7
Degree can may be, for example, 0.5mm between 0~1cm, and thickness shows to may be selected not in dielectric substrate 1 in the present embodiment for 0
Upper setting protective layer 7.
The present embodiment dielectric substrate 1 is in setting, the relative dielectric constant range only to the material that dielectric substrate 1 is made
It is limited, should be between 1~100, dielectric substrate 1 is transparent or nontransparent using such as quartz, silicon chip, F4B plates, TP plates etc.
Material be made, can so greatly increase the type of 1 material selection of dielectric substrate.And for conductive pattern 2, the present embodiment
In the material of conductive pattern 2 be made include but not limited to metal, graphene, Polyglycolic acid fibre and conducting polymer, meanwhile,
The figure of manufactured conductive pattern 2 also includes but not limited to concave polygon, convex polygon, circle and ellipse and fractal graph,
Wherein the fundamental figure of fractal graph includes but not limited to square, diamond, cross, H-shaped and I-shaped etc..
In addition, conductive pattern 2 is directed to, in the present embodiment at it when being set in dielectric substrate 1, for convenient for setting
Consider, in the rectangular area that also each conductive pattern 2 is arranged on the surface of dielectric substrate 1, the side of the rectangular area
It grows between 50nm~10cm, the rectangular area residing for multiple conductive patterns 2 is mutually separated, and is spread along the surface of dielectric substrate 1
Exhibition, being repeated cyclically on 1 surface of dielectric substrate of conductive pattern 2 can be realized with this.Certainly, in addition to causing each conductive pattern 2
In the rectangular area of above-mentioned side size range, conductive pattern 2 is in arrangement in the present embodiment, in 1 surface institute of dielectric substrate
The shape and size of the plane domain of occupancy also can as needed or the concrete shape of conductive pattern 2 and be designed.
The surface electromagnetic wave input unit of 1 lateral edges of dielectric substrate and surface electromagnetic wave output are set in the present embodiment
Unit can be that the gradient that can be coupled to surface electromagnetic wave surpasses surface or microstrip line in design, and in addition to surpassing table for gradient
Face and microstrip line, the modes of other realization Coupling of surface electromagnetic wave as corresponding to the coupled modes such as direct-coupling is also can be with
's.
Wherein, specifically, as a kind of in the common knot that plane electromagnetic wave is coupled into surface electromagnetic wave of microwave section
Structure, a kind of example arrangement of the microstrip line of the present embodiment as shown in Figure 2, can directly using above-mentioned dielectric substrate 1 as
Matrix is equipped with sheet metal 10 on 1 top of dielectric substrate, corresponding to 10 position of sheet metal, the bottom end of dielectric substrate 1 covered with
Metal 9.
The microstrip line construction electromagnetic wave shown in Fig. 2 of the present embodiment resonance between upper and lower metal covering, due to not being closing
Metal wave guide cavity, the process of reflection of electromagnetic wave will appear larger radiation, is susceptible to the bigger wave of wave vector so that
Microstrip line can have higher efficiency relative to direct-coupled mode.The microstrip line construction of the present embodiment directly makes it
In the measurement that can be convenient in experiment on dielectric substrate 1 namely when electromagnetic wave reaches the microstrip line construction of receiving terminal, that is, have
Signal is coupled to the interface being connect with microstrip line, so as to the output conducive to signal.
The gradient of the present embodiment surpasses surface coupled modes, i.e., is made on dielectric sheet with periodic sub-wavelength structure,
Several small units, when plane electromagnetic wave is incident on this sub-wavelength structure, electromagnetism are included in each big sub-wavelength structure
The variation of continuous 2pi occurs for wave phase, when the size of sub-wavelength structure is less than electromagnetic wavelength, incident plane electromagnetic wave
The surface electromagnetic wave of specific wave vector will be converted into greater efficiency.Specifically, the gradient of the present embodiment surpasses a kind of example on surface
Property structure can be as shown in Figure 3, and above-mentioned dielectric sheet can still use dielectric substrate 1, the junior unit in each sub-wavelength structure 11
It is made of " H " type structure of sub-wavelength dimensions, the size gradually minispread in certain direction of each junior unit.
The direct coupling system of the present embodiment is that antenna is attached in dielectric substrate 1, so as to which electric current is in antenna and dielectric
Scattering can occur between substrate 1 during direct resonance to external radiation, and form surface electromagnetic wave, which is also a kind of ratio in microwave section
The coupled modes of more typical surface electromagnetic wave, but its coupling efficiency is low compared to microstrip line.
The mechanism propagated below in conjunction with above-mentioned example structure surface electromagnetic wave auto-collimation illustrates.
Different from the electromagnetic wave of free-space propagation, surface electromagnetic wave is to be present in two kinds of Jie with differing dielectric constant
Between matter and along the electromagnetic wave that vertical interface direction index decays, compared with the electromagnetic wave of free-space propagation, identical frequency following table
Face electromagnetic wave phase speed is low and wave vector is big.When above-mentioned medium at least one medium is anisotropy, existing surface electromagnetism
Wave is also known as Dyakonov waves, and the propagation of surface electromagnetic wave at this time is no longer along 360 degree instead along some specific angles
Degree is propagated.
It is well known that a kind of surface electromagnetic wave pattern (the Q factors ratio that can be propagated rather than dissipate existing for body structure surface
It is higher) resonance dependent on structure, in other words, stable mode present on structure both corresponds to the resonance mode of structure.When
When a kind of dielectric surface covers anisotropic periodic sub-wavelength conductive pattern, these conductive patterns are at different frequencies
With different resonance modes.Under the angle of physics, each frequency, structure (i.e. aforementioned medium and the covering of its surface
The entirety of anisotropic periodicity sub-wavelength conductive pattern) an equivalent dielectric constant is all corresponded to, and due to conductive pattern
Anisotropy, the structure is in conductive pattern size for that can be equivalent to the equal of dielectric constant anisotropy in the case of sub-wavelength
Even medium.
The adjustment of geometrical parameters and dielectric constant can have an impact resonance mode, since the sub-wavelength structure has
There is periodicity, therefore the resonance mode of each conductive pattern unit can be interacted by surrounding cells, eventually form
What we obtained depends on periodic stable mode.And each corresponding pattern information of frequency (such as wave vector, direction of propagation etc.)
It can be obtained by isofrequency map, wherein the direction of propagation is perpendicular to the tangential direction for waiting frequencies line.
As described above, we can be by the geometric parameter of adjustment structure come the final propagation side for adjusting surface electromagnetic wave
To I-shaped in the utility model is the resonance characteristics based on its structure and individual unit, different under the conditions of periodically existing
It interacts between pattern, forms the pattern (it is straight line to wait frequencies line) for the surface electromagnetic wave propagated along single direction, the pattern is very
Good is strapped in very narrow region, realizes that the collimation of surface electromagnetic wave is propagated.
And on for the judgement to touch location, as previously mentioned, the pattern depends on the periodicity of conductive pattern, change sentence
It talks about, under working frequency (i.e. specific frequency), surface electromagnetic wave is considered as the Dyakonov waves propagated along single direction, has
Anisotropy effective dielectric constant.When the dielectric object with differing dielectric constant is appeared on the path of auto-collimation propagation,
The periodicity that the pattern relies on is destroyed, and original homogeneous anisotropy cannot be regarded as again by placing around dielectric object is situated between
Matter, in other words, script no longer exist due to the around pattern auto-collimation pattern to be formed that interacts, and directly performance is
The attenuation of propagation path upper surface electromagnetic wave signal corresponding to dielectric object, and due to far from dielectric object propagation path at still
So have periodically, therefore, can touch location be realized via the coordinate corresponding to auto-collimation propagation path by this method
Judgement.
Illustrate below in conjunction with specific example, and using Comsol Multiphysics calculating and experiment model test
The performance of the touch screen of the above structure of the present embodiment.
First, as a kind of exemplary construction, the structure of conductive pattern 2 and dielectric substrate 1 is led as shown in Fig. 4 and Fig. 5
Body pattern 2 is I-shaped structure, residing for the length of side in direction region be respectively Dx and Dy, and conductive pattern 2 knot of itself
Structure parameter includes a, b, c, w1、w2、w3With thickness t, in addition, the structural parameters of dielectric substrate 1 include its thickness h and opposite are situated between
Electric constant.
As first example, Dx=Dy=5mm, a=2mm, b=c=3.8mm, w are chosen in this example1=w2=w3
=0.4mm, h=1mm, t=35 μm, the relative dielectric constant of dielectric substrate 1 is 16, and have millesimal tangential loss,
Conductive pattern 2 is made of metallic copper.At this point, for the conductive pattern 2 of structure as shown in Figure 4, pass through Comsol
As shown in fig. 6, wherein transverse and longitudinal coordinate is respectively the wave vector in x and y directions, unit is the isofrequency map that Multiphysics is calculated
Pi/Dx, it is GHz that is marked in figure, which waits the unit of the corresponding frequency of frequencies line,.As seen from Figure 6, it is respectively 6.2GHz in frequency
During with 11.11GHz, line of the frequencies line for two orthogonal direction opposing straights is waited, shows the surface in 6.2GHz and 11.11GHz
Electromagnetic wave has that good autocollimatic is straightforward namely surface electromagnetic wave is unidirectional in the x-direction under 6.2GHz this specific frequency passes
It broadcasts, and rapid decay in the y-direction, similarly, under 11.11GHz this specific frequency, surface electromagnetic wave one way propagation in the y-direction,
And rapid decay in the x-direction.
To verify above-mentioned calculating and analysis, in this example as shown in Figure 7, according to above-mentioned conductive pattern 2 and dielectric base
The structural parameters at bottom 1 produce the touch screen sample of square, in the sample dielectric substrate 1 by the way of PCB printings
Conductive pattern 2 altogether for 196, (x is to input for the surface electromagnetic wave input unit that inputs and receive for Coupling of surface electromagnetic wave
Unit, y are to input unit) and surface electromagnetic wave output unit (x is to output unit, x to output unit) using microstrip line.
Using made touch screen sample, use net divide instrument (Agilent 8722ES) input in the x-direction frequency for
6.34GHz and in the y-direction input frequency be 11.12GHz when electric field component Ex amplitude distribution such as Fig. 8 in (a) and
(b) shown in, it is straightforward to be respectively provided with good bound and autocollimatic for the electric field of both direction as seen from Figure 8, this and above-mentioned meter
Point counting analysis meets.
And it is response of the surface electromagnetic wave of the obtained auto-collimation propagation of verification to its propagation path ambient enviroment, this reality
Dielectric cylinder 8 as shown in Figure 9 is selected in example, the dielectric constant of the dielectric cylinder 8 is different from ring around dielectric substrate
Border (air), and the radius of dielectric cylinder 8 be 5mm, a height of 5mm, meanwhile, dielectric cylinder 8 altogether have relative dielectric constant difference
For five kinds of 16.5,20.5,36.5,45,69.Being sequentially placed in table as shown in Figures 10 and 11 respectively by dielectric cylinder 8
On the electromagnetic wave propagation path of face and be placed on surface electromagnetic wave propagation path both sides.
After dielectric cylinder 8 is placed, divide output input signal ratio (S21) that instrument measures x and y directions respectively such as by net
Shown in (a) and (b) in Figure 12, wherein, the line with square mark represents dielectric cylinder 8 and is positioned over surface electromagnetic wave
On propagation path, the line with circular indicia represents the both sides that dielectric cylinder 8 is positioned over propagation path, and abscissa is dielectric cylinder
Relative dielectric constant, and relative dielectric constant for 1 represent do not place dielectric cylinder.(a), which can be seen that, in Figure 12 works as dielectric
When cylinder 8 is appeared on propagation path, surface electromagnetic wave is by the scattering of part and absorbs, and results in and is received at output unit
Electromagnetic intensity be substantially reduced.(b) is it can be seen that when dielectric cylinder 8 is located at both sides, without in surface electricity in Figure 12
When on the propagation path of magnetic wave, the loss in surface electromagnetic wave communication process is very low, this surface electromagnetic wave propagated with auto-collimation
It is related for non-diffraction propagation, and the surface electromagnetic wave of auto-collimation propagation that the touch screen sample of this example of surface is formed can be effective
Avoid the interference of its propagation path ambient enviroment.
It should be noted that the S21 values measured in sample experiments are relatively low and have the reason of floating mainly to have in this example
Two, be that the coupling efficiency of microstrip line is not high first, and the damage for significantly, resulting in electromagnetic wave energy is scattered especially in coupling process
It loses；Secondly because the output unit as output only acts upon the fixed region of a fritter rather than is propagated in surface electromagnetic wave
Effective wavelength range in integrated, therefore the measurement of different location just have it is different as a result, and energy value it is relatively low.
Even if but have the influence of factor as above, by the dielectric cylinder 8 shown in Figure 12 on propagation path with
And in two side position of propagation path as a result, still being able to find out when there is dielectric cylinder 8 on propagation path, output signal is apparent
Reduce, therefore can be very good to prove that the touch screen of this exemplary construction can effectively detect biography by above-mentioned experiment
The variation of environment on path is broadcast, while excludes the interference around propagation path.
It is missed in addition, the error in this example between sample experiments and the obtained frequency of energy band analysis is mainly derived from workmanship
Deviation on the relative dielectric constant of difference and dielectric substrate 1.
As second example, the parameter a in first example is only changed to 1.4mm, other parameters by 2mm in this example
It remains unchanged.At this point, the isofrequency map being calculated by Comsol Multiphysics is as shown in Figure 13, by can be in Figure 13
The frequency for finding out the surface electromagnetic wave that auto-collimation is propagated at this time is 6.7GHz and 11.2GHz.And by using with first example
In measured by identical experimental method at this point, x and y directions are corresponded to when collimating frequency and being respectively 6.95GHz and 11.28GHz
The amplitude distribution of electric field component Ex is as shown in Figure 14.In addition, different dielectric cylinder 8 on propagation path and is passing respectively
Broadcast path both sides place when output input signal ratio as shown in Figure 15.By respectively scheming the touch screen it is found that in this example above
The auto-collimation that specific frequency lower surface electromagnetic wave can be achieved is propagated, meanwhile, it can effectively detect environment on propagation path
Variation, while exclude the interference around propagation path, and auto-collimation can be also adjusted by adjusting the parameter of conductive pattern 2
The frequency of the surface electromagnetic wave of propagation.
As third example, the relative dielectric constant of dielectric substrate 1 is only changed into 3, Qi Tacan by 16 in this example
Number is identical with first example, the isofrequency map being calculated at this time by Comsol Multiphysics as shown in Figure 16,
By it can be seen that the auto-collimation frequency in corresponding x and y directions is respectively 12.83GHz and 23.82GHz, first example is compared
Understand that the touch screen of this example is autocollimatic can change surface electromagnetic wave by changing the relative dielectric constant of dielectric substrate 1
Frequency.
As the 4th example, the thickness h of dielectric substrate 1 is become into 1.2mm, the phase of dielectric substrate 1 from 1mm in this example
3 are remained to dielectric constant, other parameters are identical with first example, calculated at this time by Comsol Multiphysics
Obtained isofrequency map as shown in Figure 17, as seen from Figure 17 the auto-collimation frequency of surface electromagnetic wave become for 12.65GHz and
23.5GHz, auto-collimation frequency can be changed by changing the thickness of dielectric substrate 1 by showing the touch screen of this example.
As the 5th example, by structural parameters Dx, Dy, a, b, c, w in third example in this example1、w2、w3
Reduce 1/5, i.e. Dx=Dy=1mm, a=0.4mm, b=c=0.76mm, w1=w2=w3=0.08mm, h=0.2mm, and protect
The relative dielectric constant for holding dielectric substrate 1 is 3, and the thickness h of conductive pattern 2 is 35 μm.Pass through Comsol at this time
The isofrequency map that Multiphysics is calculated is as shown in figure 18, and the auto-collimation frequency in x and y directions becomes as seen from Figure 18
63.35GHz and 120.5GHz, and at this point, x and y directions correspond to electricity when collimating frequency and being respectively 63.35GHz and 120.5GHz
The amplitude distribution of field component Ex is as shown in Figure 19.And with third examples comparative, it is known that the touch screen of this example can pass through
Auto-collimation frequency is adjusted to the adjustment of 2 geometric parameter of conductive pattern, meanwhile, with first examples comparative, it can be seen that conductor
The variation of 2 geometric parameter of pattern also results in the variation of electric field constraint width namely reduces with the reduction of geometric parameter, from
And it also illustrates that the touch screen of this example can adjust resolution ratio by the adjustment of geometric parameter.
To sum up, several examples through this embodiment can be seen that the touch screen of structure described in the present embodiment not only can be real
The auto-collimation of surface electromagnetic wave under existing specific frequency is propagated, and can also be realized pair by changing the structural parameters of touch screen
The adjustment of its auto-collimation frequency (i.e. working frequency) and resolution ratio, it is adjustable so as to obtain a kind of applied widely and resolution ratio
Touch screen structure.And the concrete application of the touch screen of the present embodiment structure will be illustrated in examples below two.
Embodiment two
The present embodiment is related to a kind of touch-screen system, including the touching based on surface electromagnetic wave as described in embodiment one
Touch screen, further include the electromagnetic wave generation unit that is connect with surface electromagnetic wave input unit and with surface electromagnetic wave output unit
The recognition unit of connection.Wherein, electromagnetic wave generation unit is used to generate the electromagnetic wave of specific frequency and is transmitted in surface electromagnetic wave
Input unit, the intensity of surface electromagnetic wave of the recognition unit then for being received to surface electromagnetic wave output unit are detected,
Surface electromagnetic wave intensity to be reduced to the coordinate corresponding to surface electromagnetic wave output unit more than nominal threshold value as touch point
Coordinate.The electromagnetic wave generation unit of the present embodiment is used with recognition unit such as the microstrip line construction in embodiment one.
The touch-screen system of the present embodiment by using the touch screen in embodiment one, by determine dielectric substrate 1 and
The geometric parameter of conductive pattern 2 so as to determine its corresponding to auto-collimation propagate surface electromagnetic wave frequency, be
The specific frequency of electromagnetic wave namely the working frequency of the touch-screen system that the electromagnetic wave generation unit should generate.
The electromagnetic wave of specific frequency namely working frequency is generated by electromagnetic wave generation unit, and via surface electromagnetic wave
The coupling of input unit forms surface electromagnetic wave and the auto-collimation of surface electromagnetic wave is propagated and surface electromagnetic wave output unit pair
The reception of surface electromagnetic wave and the identification of recognition unit.Thus just can be because of the change of environment at touch point, and cause touch point
The reduction that surface electromagnetic wave on affiliated x directions and the propagation path in y directions receives, if recognition unit detects surface electromagnetism
Intensity of wave is reduced beyond nominal threshold value, can judge that the reduction of surface electromagnetic wave not because error causes, passes through x directions at this time
And the orthogonality of y directions propagation path, just it is able to confirm that out the detailed position coordinates of touch point.Certainly, if only needing a side
To position coordinates, only pass through the judgement to the output signal on x directions or y directions at this time.
The foregoing is merely the preferred embodiment of the utility model, not limiting the utility model, all essences in the utility model
With within principle, any modification, equivalent replacement, improvement and so on should be included within the protection domain of the utility model god.
Claims (12)
1. a kind of touch screen based on surface electromagnetic wave, it is characterised in that including：
Dielectric substrate；
Multiple surface electromagnetic wave input units, set on the dielectric substrate side, to form to the electromagnetic wave of outside generation in institute
The coupling of dielectric substrate is stated, and forms surface electromagnetic wave；
Periodic conductor pattern, set on the dielectric substrate, the characteristic size of each conductive pattern is sub-wavelength ruler
It is very little, and the conductive pattern is configured to adapt to the structure of the dielectric substrate, and make the surface electromagnetic wave input unit
The surface electromagnetic wave of the specific frequency of input is formed to be propagated along the auto-collimation of the dielectric substrate；
Multiple surface electromagnetic wave output units, relative to the surface electromagnetic wave input unit, the phase set on the dielectric substrate
To opposite side and form the one-to-one correspondence between the surface electromagnetic wave input unit, surface electromagnetic wave output is single
The surface electromagnetic wave that member composition propagates auto-collimation being coupled to receive and the surface electromagnetic wave of the reception being carried out to outside
Conductance goes out.
2. the touch screen according to claim 1 based on surface electromagnetic wave, it is characterised in that：It further includes and covers in being given an account of
The protective layer having on the conductive pattern side of electric substrate；The protective layer is made of transparent or nontransparent material, and
The thickness of the protective layer is 0~1cm.
3. the touch screen according to claim 1 based on surface electromagnetic wave, it is characterised in that：The dielectric substrate it is opposite
Dielectric constant is 1~100.
4. the touch screen according to claim 3 based on surface electromagnetic wave, it is characterised in that：The dielectric substrate is by transparent
Or nontransparent material is made.
5. the touch screen according to claim 1 based on surface electromagnetic wave, it is characterised in that：The material of the conductive pattern
Including metal, graphene, Polyglycolic acid fibre and conducting polymer.
6. the touch screen according to claim 1 based on surface electromagnetic wave, it is characterised in that：The figure of the conductive pattern
Including concave polygon, convex polygon, circle, ellipse and fractal graph.
7. the touch screen according to claim 6 based on surface electromagnetic wave, it is characterised in that：The fractal graph it is basic
Figure includes square, diamond, cross, H-shaped and I-shaped.
8. the touch screen according to claim 1 based on surface electromagnetic wave, it is characterised in that：Each conductive pattern quilt
Be arranged in a rectangular area for being formed in the dielectric substrate, and the length of side of each rectangular area for 50nm~
10cm, each rectangular area are mutually separated.
9. the touch screen according to claim 1 based on surface electromagnetic wave, it is characterised in that：The surface electromagnetic wave input
The gradient that unit and the surface electromagnetic wave output unit include that surface electromagnetic wave can be coupled surpasses surface, microstrip line.
10. the touch screen according to any one of claim 1 to 9 based on surface electromagnetic wave, it is characterised in that：In described
The opposite sides in each direction in the mutually orthogonal both direction of dielectric substrate is respectively arranged with the surface of corresponding arrangement
Electromagnetic wave input unit and the surface electromagnetic wave output unit.
11. a kind of touch-screen system, it is characterised in that including：
The touch screen based on surface electromagnetic wave as described in any one of claims 1 to 10；
Electromagnetic wave generation unit is connect with the surface electromagnetic wave input unit, to generate the electromagnetic wave of specific frequency and transmission
In the surface electromagnetic wave input unit；
Recognition unit is connect with the surface electromagnetic wave output unit, and the recognition unit is for defeated to the surface electromagnetic wave
The intensity for going out the surface electromagnetic wave that unit is received is detected, and surface electromagnetic wave intensity is reduced institute more than nominal threshold value
State coordinate of the coordinate corresponding to surface electromagnetic wave output unit as touch point.
12. touch-screen system according to claim 11, it is characterised in that：The coordinate of the touch point is along the dielectric
The coordinate of one-dimensional coordinate or the touch point on one direction of substrate is along two orthogonal directions of the dielectric substrate
Two-dimensional coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721124770.2U CN207586894U (en) | 2017-09-04 | 2017-09-04 | Touch screen and touch-screen system based on surface electromagnetic wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721124770.2U CN207586894U (en) | 2017-09-04 | 2017-09-04 | Touch screen and touch-screen system based on surface electromagnetic wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207586894U true CN207586894U (en) | 2018-07-06 |
Family
ID=62727434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721124770.2U Withdrawn - After Issue CN207586894U (en) | 2017-09-04 | 2017-09-04 | Touch screen and touch-screen system based on surface electromagnetic wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207586894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107885403A (en) * | 2017-09-04 | 2018-04-06 | 深圳市尚维高科有限公司 | Touch-screen and touch-screen system based on surface electromagnetic wave |
| CN111857450A (en) * | 2019-04-26 | 2020-10-30 | 深圳市环波科技有限责任公司 | Multi-point positioning method of touch screen based on surface electromagnetic waves |
-
2017
- 2017-09-04 CN CN201721124770.2U patent/CN207586894U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107885403A (en) * | 2017-09-04 | 2018-04-06 | 深圳市尚维高科有限公司 | Touch-screen and touch-screen system based on surface electromagnetic wave |
| CN107885403B (en) * | 2017-09-04 | 2024-05-24 | 深圳市环波科技有限责任公司 | Touch screen and touch screen system based on surface electromagnetic waves |
| CN111857450A (en) * | 2019-04-26 | 2020-10-30 | 深圳市环波科技有限责任公司 | Multi-point positioning method of touch screen based on surface electromagnetic waves |
| CN111857450B (en) * | 2019-04-26 | 2023-08-04 | 深圳市环波科技有限责任公司 | Multi-point positioning method of touch screen based on surface electromagnetic waves |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kim et al. | Switchable nonlinear metasurfaces for absorbing high power surface waves | |
| US9113559B2 (en) | Pressure reconfigured electromagnetic devices | |
| Ran et al. | Experimental study on several left-handed matamaterials | |
| Quarfoth et al. | Nonscattering waveguides based on tensor impedance surfaces | |
| KR20060050540A (en) | Polarized light separating element embedded with thin metallic wire | |
| CN207586894U (en) | Touch screen and touch-screen system based on surface electromagnetic wave | |
| JP2007166115A (en) | Antenna device | |
| CN108767492A (en) | Adjustable Terahertz broadband wave absorbing device | |
| CN102479998B (en) | Electromagnetic transparent metamaterial | |
| CN107885404A (en) | Method for detecting position and position sensor based on surface electromagnetic wave | |
| Wakatsuchi | Waveform-selective metasurfaces with free-space wave pulses at the same frequency | |
| Tong et al. | Anisotropic index-near-zero metamaterials for enhanced directional acoustic emission | |
| CN107885403A (en) | Touch-screen and touch-screen system based on surface electromagnetic wave | |
| Zhang et al. | An efficient finite-element method for the analysis of photonic band-gap materials | |
| Tong et al. | Broadband flattened underwater acoustic Luneburg lens | |
| Fan et al. | 3D flexible frequency selective surface with stable electromagnetic transmission properties | |
| Kashiwagi et al. | Flexible and stackable terahertz metamaterials via silver-nanoparticle inkjet printing | |
| CN112054309B (en) | Multi-band electromagnetic wave absorption structure and absorption method | |
| CN209803768U (en) | flexible touch screen and flexible touch device based on surface electromagnetic wave | |
| CN111857450B (en) | Multi-point positioning method of touch screen based on surface electromagnetic waves | |
| WO2020095786A1 (en) | Substrate | |
| CN106199817B (en) | A kind of stealthy device of optical waveguide | |
| CN102810743B (en) | Device for attenuating creeping wave on antenna surface | |
| CN207781850U (en) | Frequency multiplication spatial filter | |
| CN209784980U (en) | electronic whiteboard based on surface electromagnetic wave |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Guangdong Longhua District Minzhi Street Leshe Xinghe WORLD Phase II E Block 306B Patentee after: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. Address before: 518000 Shenzhen Nanshan District, Guangdong Province, 118B-H, Shenzhen Industry, University and Research Building, Hong Kong University of Science and Technology, No. 9 Yuexing Road, Yuehai Street, Shenzhen Patentee before: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190531 Address after: 518000 Shenzhen Nanshan District, Guangdong Province, 118B-H, Shenzhen Industry, University and Research Building, Hong Kong University of Science and Technology, No. 9 Yuexing Road, Yuehai Street, Shenzhen Patentee after: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. Address before: 518000 B12 building, 18 Naka Minobu innovation industrial town, Buji street, Longgang, Shenzhen, Guangdong. Co-patentee before: Hu Chuandeng Patentee before: Wen Weijia Co-patentee before: Wu Xiaoxiao |
|
| CP02 | Change in the address of a patent holder |
Address after: 518000 Guangdong Province Longhua District Minzhi Street Minle Community Xinghe WORLD Phase II E Block 306B Patentee after: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong Longhua District Minzhi Street Leshe Xinghe WORLD Phase II E Block 306B Patentee before: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 unit I, block B, floor 7, building 9, Baoneng Science Park, Qinghu village, Qinghu community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong Province Longhua District Minzhi Street Minle Community Xinghe WORLD Phase II E Block 306B Patentee before: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 unit I, block B, 6 / F, Baoneng Science Park, Qinghu village, Qinghu community, Longhua street, Longhua District, Shenzhen, Guangdong Patentee after: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. Address before: 518000 unit I, block B, 7 / F, building 9, Baoneng Science Park, Qinghu village, Qinghu community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HUANBO TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180706 Effective date of abandoning: 20240524 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180706 Effective date of abandoning: 20240524 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |