CN205540645U - Pressure sensing touch -control module - Google Patents
Pressure sensing touch -control module Download PDFInfo
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- CN205540645U CN205540645U CN201620077551.2U CN201620077551U CN205540645U CN 205540645 U CN205540645 U CN 205540645U CN 201620077551 U CN201620077551 U CN 201620077551U CN 205540645 U CN205540645 U CN 205540645U
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
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Abstract
The utility model provides a pressure sensing touch -control module includes touch -control sensor layer and conducting layer, the cooperation of touch -control sensor layer selectivity and conducting layer forms the two poles of the earth board of a condenser, utilizes between this the two poles of the earth board the capacitance value situation of change that produces because of the change of distance to detect pressure signal. The utility model overcomes prior art pressure sensing touch -control module does respectively and gathers touch -control position sigual and touch -control pressure signal, and with high costs and problem that the processing procedure is complicated provides one kind and adopts same IC timesharing to detect the pressure sensing touch -control module of controlling position sigual and touch -control pressure signal.
Description
[technical field]
The utility model relates to touch module field, particularly relates to a kind of pressure-sensing touch module.
[background technology]
nullThe most most of contact panels only possess position of touch detection at present，And along with the functional diversities of electronic product，Increasing use scene needs to detect the stress size at touch point，To complete more product function，Improve the Experience Degree of user，And need to separate two electrode structures with air layer at existing capacitive pressure touch-control structure，Because air layer resistance is little，Bigger deformation can be produced，But the existence of air layer if placed at display above，There may be the problem that Newton's ring affects visual effect，Thus pressure sensitive structure must be arranged at below display，And so arrange so that pressure sensitive structure is distant with touch surface，There is the conduction of other stepped construction dispersive pressures more centre，The sensitivity making pressure detection decreases，And it is respectively arranged at display both sides for detecting the pixel control layer touching capacitance signal change and pressure sensing structure，Such setting at least needs first direction signal sensing layer、Three layers of electrode layer such as second direction signal sensing layer and pressure signal detection layers，And use different IC to make signal judgement respectively，Cost is high and processing procedure is complicated，The utility model proposes preferably to solve the pressure-sensing touch module of appeal problem around the problems referred to above.
[utility model content]
Position of touch signal and touch-control pressure signal is gathered respectively for overcoming prior art pressure-sensing touch module to adopt different IC, the problem that cost is high and processing procedure is complicated, the utility model provides a kind of and uses same IC timesharing detection control position signalling and the pressure-sensing touch module of touch-control pressure signal.
The technical scheme of the utility model solution technical problem is to provide a kind of pressure-sensing touch module and includes pixel control layer and conductive layer, described touch-control sensing layer-selective and conductive layer cooperatively form the two-plate of a capacitor, utilize the capacitance variation situation produced because of the change of distance between this two-plate to detect pressure signal.
Preferably, described pixel control layer includes, multiple first directions sensing electrode array and multiple second direction sensing electrode array；Position signalling on multiple first directions sensing electrode array detection first direction, the position signalling in multiple second directions sensing electrode array detection second direction；Multiple first directions sensing electrode array and the sensing electrode array selectivity of multiple second direction turn on ground connection jointly so that pixel control layer is equivalent to a plane with fixed potential.
Preferably, first direction sensing electrode array includes multiple first direction electrode block；Second direction sensing electrode array includes that multiple second direction electrode block, multiple first direction electrode blocks and multiple second direction electrode block are spaced setting uniformly.
Preferably, multiple conducting blocks are arranged with multiple first direction electrode blocks, multiple second direction electrode block one_to_one corresponding.
Preferably, farther include a cover plate and an IC, described pixel control layer is arranged between cover plate and conductive layer, each conducting block of IC conducting connecting conductive layer and each first direction sensing electrode array of pixel control layer and each second direction sense electrode array, and timesharing drives and controls pixel control layer and conductive layer.
Preferably, farther including the first optical cement layer, described first optical cement layer is arranged between pixel control layer and conductive layer, and the first optical cement layer is the transparent optical flexible glue layer that young's modulus is less than or equal to 0.2Gpa.
Preferably, described first optical cement layer thickness is 20-100 μm.
Preferably, farther including a display module and one second optical cement layer, described second optical cement layer is arranged between described conductive layer and described display module.
Preferably, described second optical cement layer is the clear hard glue-line that young's modulus is more than or equal to 0.5Gpa.
Preferably, the thickness of described second optical cement layer is more than or equal to 30 μm.
Compared with prior art, the utility model has the advantages that
1, pixel control layer and conductive layer form capacitor, the size of its touch-control pressure can be detected when there being touch-control pressure to act on cover plate, the size of pressure is detected without extra means, cost-effective, employing timesharing drives, the detection of touch location is carried out in the first stage, second stage carries out the detection of pressure size, circulation is gone down successively, make pressure-sensing touch module can be effectively accomplished the dual-use function of touch location detection and pressure detecting, first carry out position detection at first stage IC simultaneously, thus can the most accurately judge the concrete conducting block position that pressure signal produces, then directly read in second stage and pressing pressure signal produced by location point, and then can effectively save the power consumption of detection pressure spot output position.
2, the first direction sensing electrode array of sensing first direction position and the second direction sensing electrode array of sensing second direction position are arranged with layer, make pixel control layer simultaneously with detection first direction position and the function of second direction position, more conform to the theory that product is lightening.
3, display module is arranged under conductive layer, rather than be arranged between conductive layer and pixel control layer, do not affect distance d between pixel control layer and conductive layer, ensure that the utility model does not affect its susceptibility to pressure detecting while having display function, the most accurate to the result of calculation of touch-control pressure.
4, conductive layer includes multiple conducting block, and conducting block is arranged with first direction electrode block and the second direction electrode block one_to_one corresponding of pixel control layer, when carrying out pressure-sensing can effectively Δ C/C0 value change around adherence pressure touch point, promote the detecting sensitivity to pressure.
5, the second optical cement layer is hard material, and it can give conductive layer one rigid support when by external force touch-control, effectively prevents conductive layer from deforming upon, and improves pressure detecting accuracy, and the loading plate material simultaneously making conductive layer can be flexible material.
[accompanying drawing explanation]
Fig. 1 is the utility model one pressure-sensing touch module detonation configuration schematic diagram.
Fig. 2 is the cross section structure schematic diagram of the utility model a kind of pressure-sensing touch module.
Fig. 3 a is that the utility model a kind of pressure-sensing touch module is not by cross section structure schematic diagram during External Force Acting.
Fig. 3 b is that the utility model a kind of pressure-sensing touch module is by cross section structure schematic diagram during External Force Acting.
Fig. 4 is the structural representation of the pixel control layer of the utility model a kind of pressure-sensing touch module.
Fig. 5 is the utility model a kind of pressure-sensing touch module Fig. 4 structure enlarged diagram at A.
Fig. 6 is the structural representation of the utility model a kind of pressure-sensing touch module conductive layer.
Fig. 7 is the detonation configuration schematic diagram of the second embodiment of the utility model a kind of pressure-sensing touch module.
Fig. 8 is the 3rd a kind of method flow diagram sensing pressure touch of embodiment of the utility model a kind of pressure-sensing touch module.
Fig. 9 is the sequential chart of the IC driving signal of the 3rd a kind of method sensing pressure touch of embodiment of the utility model a kind of pressure-sensing touch module.
Figure 10 is that the IC of a kind of method variant embodiment sensing pressure touch of the 3rd embodiment of the utility model a kind of pressure-sensing touch module drives signal timing diagram.
[detailed description of the invention]
In order to make the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing and embodiment, are further elaborated the utility model.Should be appreciated that specific embodiment described herein, only in order to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1 and Fig. 2, the utility model one pressure-sensing touch module 10, it includes cover plate 102, pixel control layer 101, the first optical cement layer 103 and conductive layer 105.Cover plate 102 includes upper and lower two surfaces, and upper surface is a touch surface, and touch-control sensing layer 101 is arranged at away from touch surface side.Cover plate 102 mainly protection setting other laminated construction under it and circuit.First optical cement layer 103 is arranged between pixel control layer 101 and conductive layer 105, in order to bond pixel control layer 101 and conductive layer 105.Pixel control layer 101 and conductive layer 105 connect with same IC (Integrated Circuit, integrated circuit) 104 conducting.
Refer to Fig. 3 a and Fig. 3 b, the utility model pressure-sensing touch module 10, it is carried out position of touch detection and touch-control pressure detecting by IC104 SECO stage by stage, carry out position of touch detection-phase touch cover plate 102 when finger time, finger the touch position of cover plate 102 can cause be arranged far from the pixel control layer 101 of cover plate 102 touch surface in a first direction with the electric capacitance change of second direction, IC104 can obtain the positional information of touch point through Treatment Analysis.Carrying out the pressure-sensing stage, the principle of its sensing pressure is two pole plates utilizing pixel control layer 101 and conductive layer 105 equivalence to form capacitor, the touch-control pressure size applied on touch point is determined by the capacitance change between detection pixel control layer 101 and conductive layer 105, position signalling detection simultaneously and pressure signal detection are all to be obtained by detection capacitance variations, and therefore position signalling detection and pressure signal detection can be completed by same IC104 process.The computing formula of concrete its capacitance (C) is as follows:
In formula 1, ε is the dielectric constant of the medium between two capacitor plates, and A is the area of two capacitor plates, and d is the distance between two capacitor plates.
When not being under pressure, cover plate 102, pixel control layer 101 and the first optical cement layer 103, all in original state, do not deform upon.Now, the initial distance between pixel control layer 101 lower surface and conductive layer 105 upper surface is d.
The effect of power is applied at cover plate 102 upper surface, when experiencing External Force Acting, cover plate 102 bends deformation, with cover plate 102 laminating pixel control layer 101 also with the deformation that bends, the first optical cement layer 103 fitted with pixel control layer 101 can occur elastic deformation therewith, so that it is Δ d that the distance between pixel control layer 101 and conductive layer 105 becomes the range difference between d1, d and d1.The size of Δ d can produce change along with the size of touch-control pressure, and pressure touch-control pressure is the biggest, and the value of Δ d is the biggest.
From formula 1, if pixel control layer 101 and conductive layer 105 being equivalent to respectively the two-plate of electric capacity, i.e. pixel control layer 101 and conductive layer 105 can be equivalent to capacity plate antenna.When the effect of power experienced by cover plate 102, can bend therewith deformation with the pixel control layer 101 of cover plate 102 laminating, in turn result in the first optical cement layer 103 and elastic deformation occurs, i.e. distance between pixel control layer 101 and conductive layer 105 changes, the capacitance (C) making the equivalent plate electric capacity formed between touch-control sensing mold layer 101 and conductive layer 105 changes, therefore, in the case of parameter ε and parameter A are constant, distance d between pixel control layer 101 lower surface and conductive layer 105 upper surface can change therewith the change of the dynamics size acted on cover plate 102, the size of final dynamics can be converted to the change of capacitance (C), therefore the size of capacitance (C) can be used to measure the size of the dynamics that presses put on cover plate 102.
Using pixel control layer 101 and conductive layer 105 equivalence as two pole plates of capacitor, it is assumed that the initial distance between pixel control layer 101 and conductive layer 105 is d0, corresponding initial capacitance is C0, owing to the medium between pixel control layer 101 and conductive layer 105 is the most constant, therefore permittivity ε is always constant, and the area of pixel control layer 101 and conductive layer 105 is not changed in, and A is also constant, then have:
Pixel control layer 101 can bend deformation under external force presses the effect of cover plate 102 therewith, and the distance between pixel control layer 101 and conductive layer 105 is by initial value d0When narrowing down to d1, it reduces Δ d, and now between pixel control layer 101 and conductive layer 105, capacitance increases Δ C, and capacitance is C1, and the rate of change of its electric capacity is:
Variation delta C of electric capacity can be used to be expressed as the pressure size of touch point by IC104 process, simultaneously from formula 3, for positive correlation between size and the Δ d of the rate of change Δ C/C0 of electric capacity, for same Δ d, for the sensitivity of adherence pressure detection, d0Value the smaller the better.Therefore the thickness of the first optical cement layer 103 between pixel control layer 101 and conductive layer 105 can be made more Bao Yuehao on the premise of realizing at existence conditions, simultaneously so that its material of elastic deformation that the first optical cement layer 103 can more preferably occur under external force is preferably optics flexible glue, and it is the softest more good.And then first optical cement layer 103 be preferably the young's modulus transparent optical flexible glue material less than or equal to 0.2Gpa, its thickness is 20～100 μm.Such parameter selects the effect making the first optical cement layer 103 that conductive layer 105 can play buffer protection when the effect that user applies power to pixel control layer 101 is allowed to produce deformation; also make pixel control layer 101 when producing deformation, conductive layer 105 not damaged simultaneously, and because the first optical cement layer 101 is that substantially transparent shape therefore light transmission is good.
Referring to Fig. 4 and Fig. 5, pixel control layer 101 is arranged on substrate (not shown), and substrate is used for carrying pixel control layer 101, and therefore, substrate can be rigid substrate, such as glass, strengthens glass, sapphire glass etc.；It can also be flexible parent metal, such as PEEK (polyetheretherketone, polyether-ether-ketone), PI (Polyimide, polyimides), PET (polyethylene terephthalate, polyethylene terephthalate), PC (Merlon Merlon), PES (polyethylene glycol succinate, the materials such as the compound of PMMA (polymethyl methacrylate, polymethylmethacrylate) and arbitrarily both or many persons.
It is to be directly arranged at cover plate 102 to reduce the distance between touch-control pressure and pixel control layer 101 away from touch surface side, such setting that pixel control layer 101 is most preferably laid, and facilitates the conduction of touch-control pressure, promotes the precision of touch-control pressure detecting further.
Pixel control layer 101 includes first direction sensing electrode array 1011 and second direction sensing electrode array 1013.Substrate is once laid and forms many group first direction sensing electrode arrays 1011, often group first direction sensing electrode array 1011 includes multiple first direction electrode blocks 1021 and the first bridging line 1023 of many groups being spaced laying along a first direction, often organize the first bridging line 1023 to be laid between the adjacent first direction electrode block 1021 in same first direction sensing electrode array 1011 groups, for connecting the multiple first direction electrode blocks 1021 in same group；Many group second direction sensing electrode arrays 1013, often group second direction sensing electrode array 1013 includes multiple second direction electrode blocks 1022 that second direction interval is laid, and two adjacent second direction electrode blocks 1022 are laid in the both sides of the first bridging line 1023 respectively.Lay on the substrate and form an insulating barrier 1015, to cover at least some of of the first bridging line 1023, and on insulating barrier 1015, lay formation least one set the second bridging line 1024, the most often organize between adjacent two second direction electrode blocks 1022 that the second bridging line 1024 is laid in same group of second direction sensing electrode array 1013, for electrically connecting the second direction electrode block 1022 in same group, between further first bridging line 1023 and the second bridging line 1024, form electric insulation by insulating barrier 1015.
Meanwhile, the material of first direction sensing electrode array 1011 and second direction sensing electrode array 1013 can be ITO (tin indium oxide), nano-silver thread, Graphene, nano metal grid, CNT.
First direction sensing electrode array 1011 and second direction sensing electrode array 1013 are electrically connected with IC104 respectively, and driven by IC104 timesharing, owing to pixel control layer 101 need to have position of touch detection concurrently and cooperatively forms the function of capacitor with conductive layer 105, therefore it is required that IC104 can utilize pulsed drive control by stages first direction sensing electrode array 1011 and second direction sensing electrode array 1013, make first direction sensing electrode array 1011 and second direction sensing electrode array 1013 in order to detect touch location in time period.In another time period, multiple first directions sensing electrode array 1011 and multiple second direction sensing electrode array 1013 ground connection simultaneously, form one piece of conductive plane with fixed potential.So pixel control layer loses position detecting function within this time cycle and is equivalent to a capacitor plate with fixed potential, then capacitor is cooperatively formed with conductive layer 105 in order to detect the size of the dynamics of pressing, the most such ground connection is arranged can effective diversion finger electrostatic, avoid the impact brought due to electrostatic interference when pressure detecting, detect accuracy with effective adherence pressure.Position of touch signal detection cycle and touch-control pressure signal detection cycle control cycle detection by IC104.And the length of time cycle can be arranged by program and regulate, such timesharing drives and makes pressure-sensing touch module 10 can complete the detection of position of touch, can complete again the detection of touch-control pressure size.Employing timesharing drives, by this setting at different time cycle detection unlike signal, the dual-use function of touch location detection and pressure detecting can be effectively accomplished, it is to avoid the interference between signals collecting, improve the pressure-sensing touch module 10 accuracy to pressure-sensing further.
Referring to Fig. 6, conductive layer 105 is arranged on another loading plate, and loading plate is used for carrying conductive layer 105, and therefore, loading plate can be rigid substrate, such as glass, strengthens glass, sapphire glass etc.；It can also be flexible parent metal, such as PEEK (polyetheretherketone, polyether-ether-ketone), PI (Polyimide, polyimides), PET (polyethylene terephthalate, polyethylene terephthalate), PC (Merlon Merlon), PES (polyethylene glycol succinate, the materials such as the compound of PMMA (polymethyl methacrylate, polymethylmethacrylate) and arbitrarily both or many persons.In this embodiment; loading plate is preferably the hard materials such as the polaroid of glass, LCM; make at cover plate 102 when by external force touch-control; the effect of power makes the first optical cement layer 103 that elastic deformation to occur; but owing to the substrate of conductive layer 105 is hard material; give rigid structure to support, conductive layer 105 can be effectively protected and do not deform upon, thus ensure the accuracy of touch-control pressure detecting.
Conductive layer 105 cooperatively forms, with pixel control layer 101, the capacitive means that can sense pressure size when pressure-sensing touch module 10 carries out pressure-sensing.Therefore the shape of conductive layer 105, size to adapt with pixel control layer 101, and are parallel to pixel control layer 101, and the material of conductive layer 105 can be ITO (tin indium oxide), nano-silver thread, Graphene, nano metal grid, CNT.
Conductive layer 105 can be the conductor structure of a monoblock, and in order to detect capacitance variations, but when conductive layer 105 is an en-block construction, the deformation produced due to pressing is that only deformation quantity at pressing position is relatively big, and substantially, signal intensity is prone to collection to the change of Δ C/C0 value.And the Δ C/C0 value produced in pressing position surrounding changes inconspicuous, so that the Δ C/C0 change that pressing position surrounding produces becomes apparent from, conductive layer 105 includes multiple conducting block 1051, each conducting block 1051 is electrically connected to IC104 by wire 1053 respectively, and driven control by IC104 timesharing, and each conducting block 1051 shape and position first direction electrode block 1021, second direction electrode block 1022 one_to_one corresponding with pixel control layer 101 respectively is arranged, to promote the sensitivity of touch-control pressure detecting.
Refer to Fig. 7, the utility model the second embodiment provides a kind of pressure-sensing touch module 20, and it includes cover plate 202, pixel control layer the 201, first optical cement layer 203, conductive layer the 205, second optical cement layer 207 and the display module 209 set gradually from top to bottom.The second optical cement layer 207 and display module 209 is had additional so that pressure-sensing touch module 20, while having detection position of touch and touch-control pressure magnitude function, also has display function unlike first embodiment.
Wherein the second optical cement layer 207 is arranged between conductive layer 205 and display module 209, second optical cement layer 207 is preferably the young's modulus transparent optical ebonite material more than 0.5Gpa, thickness is more than or equal to 30 μm, second optical cement layer 207 can prevent conductive layer 205 from producing deformation for rigid optical glue material further, have influence on pixel control layer 201 and the change of electricity time conductive layer 205 forms self-capacitance, thus impact is to being applied to the accuracy of detection of touch-control pressure size on cover plate 202.And display module 209 is arranged under the second optical cement layer 207, in conjunction with above it will be appreciated that, distance d between pixel control layer 201 and conductive layer 205 is the least, detection to touch-control pressure is the sensitiveest, therefore, if display module 209 will certainly increase pixel control layer 201 and spacing d of conductive layer 205 when being arranged between pixel control layer 201 and conductive layer 205, thus affects the sensitivity of touch-control pressure detecting.Display module 209 is under the self-capacitance that pixel control layer 201 and conductive layer 205 are formed, do not affect distance d between pixel control layer 201 and conductive layer 205, pressure-sensing touch module 20 is made to have position of touch detection function, display function, touch-control pressure detecting function, simultaneously the sensitiveest to the sensing of touch-control pressure size.
nullOwing to the second optical cement layer 207 is hard material，Its laminating is arranged between conductive layer 205 and display module 209，When by external force touch-control, the second optical cement layer 207 can give conductive layer 205 1 rigid support，Effectively prevent conductive layer 205 from deforming upon，Improve the accuracy of pressure detecting，Making the loading plate carrying conductive layer 205 can be glass simultaneously、The hard materials such as the polaroid of LCM，Can also be PEEK (polyetheretherketone，Polyether-ether-ketone)，PI(Polyimide，Polyimides)，PET(polyethylene terephthalate，Polyethylene terephthalate)，PC (Merlon Merlon)，PES (polyethylene glycol succinate，PMMA (polymethyl methacrylate，Polymethylmethacrylate) and the arbitrarily flexible parent metal such as the compound of both or many persons.
Referring to Fig. 8 and Fig. 9, the utility model the 3rd embodiment provides a kind of pressure-sensing touch module 10 or 20 using first embodiment to sense a kind of method 30 sensing pressure touch of touch-control pressure, and the method includes:
S1: pixel control layer 101 is equivalent to capacitor one pole plate.
The pulse signal of pixel control layer 101 is two different pulse signals with the pulse signal of conductive layer 105, at t2, in the t4 time cycle, IC104 controls the output of pulse signal high level of pixel control layer 101, first party sensing electrode array 1011 and second direction sensing electrode array 1013 is made to turn on ground connection, pixel control layer 101 is made to be equivalent to a fixed potential conductive plane, at t2, in these time cycles of t4, first party sensing electrode array 1011 and the second direction sensing electrode array 1013 of pixel control layer 101 lose position detecting function and make pixel control layer 101 be equivalent to the conductive plane of fixed potential, and cooperatively form a capacitor with conductive layer 105；Within t1, t3 time cycle, IC104 controls the output of pulse signal low level of pixel control layer 101, the first direction sensing electrode array 1011 and the second direction sensing electrode array 1013 that make pixel control layer 101 each work, and sensing acts on the position in the position in a first direction of the tactile depressing action in pressure-sensing touch module 10 and second direction respectively.The pulse signal of pixel control layer 101 controls pixel control layer 101 with t1, t2 for loop cycle.
Conductive layer 105 is controlled to give low level in t2, t4 time cycle by IC104 so that pixel control layer 101 and conductive layer 105 complement each other to form capacitor.Within t1, t3 time cycle, pixel control layer 101 is used for sensing position of touch, capacitor plate cannot be equivalent to, i.e. pixel control layer 101 and conductive layer 105 is formed without capacitor within t1, t3 time cycle, pressure-sensing touch module 10 does not sense the function of touch-control pressure size within this time cycle, therefore conductive layer 105 can not work, i.e. not giving conductive layer 105 Control of Voltage within t1, t3 time cycle at IC104, therefore pressure-sensing touch module 10 can save energy consumption within t1, t3 time cycle.
Further, first position detection is carried out at first stage IC104, thus can the most accurately judge concrete conducting block 1051 position that pressure signal produces, then directly read in second stage and pressing pressure signal produced by location point, and then can effectively save the power consumption of detection pressure point locations.
T2, t4 time cycle acts on the touch-control pressure in pressure-sensing touch module 10 for obtaining, t1, t3 time cycle acts on the position of touch-control pressure in pressure-sensing touch module 10 for obtaining, t1, t2, t3, t4 time cycle is the shortest, it is believed that its change is the time that can obtain pressure signal and position signalling, the time of IC104 acquisition pressure signal and position signalling is the shortest simultaneously, it is believed that be instantaneous.
S2: pixel control layer 101 deforms upon.
In t2 or the t4 time cycle, when there being tactile depressing action, active force acts on cover plate 102, cover plate 102 bends deformation, touch control layer sensing 101 deforms upon therewith, and therefore spacing d between lower surface and the upper surface of conductive layer 105 of pixel control layer 101 can change, and touch-control pressure is the biggest, the change of distance d is the biggest, and the capacitor electric quantity change that i.e. pixel control layer 101 and conductive layer 105 are formed is the biggest.
By formulaKnowThe size of the capacitance change C caused owing to distance d between lower surface and the upper surface of conductive layer 105 of pixel control layer 101 changes can be drawn.
S3: capacitance change is converted to the force value of correspondence.
IC104 is converted into corresponding pressure size by the size of the capacitance change C detected.
S4: terminate.
The different size of pressure signal recorded is defined the operation of difference in functionality by IC104, improves the body-sensing of user.
Referring to Figure 10, as a variant embodiment, unlike embodiment above, conductive layer 105 can be to be constantly in electricity condition rather than periodically to electricity.It is controlled to form capacitor with pixel control layer 101 within t2, t4 time cycle by IC104 equally, is used for detecting touch-control pressure.
Compared with prior art, the utility model has the advantage that
1, pixel control layer 101 and conductive layer 105 form capacitor, the size of its touch-control pressure can be detected when there being touch-control pressure to act on cover plate 102, the size of pressure is detected without extra means, cost-effective, employing timesharing drives, the detection of touch location is carried out in the first stage, second stage carries out the detection of pressure size, circulation is gone down successively, make pressure-sensing touch module 10 can be effectively accomplished the dual-use function of touch location detection and pressure detecting, first carry out position detection at first stage IC104 simultaneously, thus can the most accurately judge concrete conducting block 1051 position that pressure signal produces, then directly read in second stage and pressing pressure signal produced by location point, and then can effectively save the power consumption of detection pressure spot output position.
2, the first direction sensing electrode array 1011 of sensing first direction position and the second direction sensing electrode array 1013 of sensing second direction position are arranged with layer, make pixel control layer 101 simultaneously with detection first direction position and the function of second direction position, more conform to the theory that product is lightening.
3, display module 209 is arranged under conductive layer 205, rather than be arranged between conductive layer 205 and pixel control layer 201, do not affect distance d between pixel control layer 201 and conductive layer 205, ensure that the utility model does not affect its susceptibility to pressure detecting while having display function, the most accurate to the result of calculation of touch-control pressure.
4, conductive layer 105 includes multiple conducting block 1051, and conducting block 1051 is arranged with first direction electrode block 1021 and second direction electrode block 1022 one_to_one corresponding of pixel control layer 101, when carrying out pressure-sensing can effectively Δ C/C0 value change around adherence pressure touch point, promote the detecting sensitivity to pressure.
5, the second optical cement layer 207 is hard material, it can be to conductive layer 205 1 rigid support when by external force touch-control, effectively preventing conductive layer 205 from deforming upon, improve pressure detecting accuracy, the loading plate material simultaneously making conductive layer 205 can be flexible material.
The foregoing is only the utility model preferred embodiment, not in order to limit the utility model, all any amendments made within the utility model principle, within equivalent and improvement etc. all should comprise protection domain of the present utility model.
Claims (10)
1. a pressure-sensing touch module, it is characterised in that: bag
Include pixel control layer and conductive layer, described touch-control sensing layer-selective
With the two-plate that conductive layer cooperatively forms a capacitor, utilize this two
The capacitance variation situation produced because of the change of distance between pole plate
Detect pressure signal.
2. pressure-sensing touch module as claimed in claim 1, its
It is characterised by: described pixel control layer includes, multiple first directions
Sensing electrode array and multiple second direction sensing electrode array；Multiple
Position signalling on one sensing direction electrode array detection first direction,
Position in multiple second directions sensing electrode array detection second direction
Signal；Multiple first directions sensing electrode array and multiple second direction
Sensing electrode array selectivity turns on ground connection jointly so that touch-control sensing
Layer is equivalent to a plane with fixed potential.
3. pressure-sensing touch module as claimed in claim 2, its
It is characterised by: first direction sensing electrode array includes multiple first party
To electrode block；Second direction sensing electrode array includes multiple second party
To electrode block, multiple first direction electrode blocks and multiple second direction
Electrode block is spaced setting uniformly.
4. pressure-sensing touch module as claimed in claim 3, its
It is characterised by: multiple conducting blocks and multiple first direction electrode blocks,
Multiple second direction electrode block one_to_one corresponding are arranged.
5. pressure-sensing touch module as claimed in claim 4, its
It is characterised by: farther include a cover plate and an IC, described touch-control
Sensed layer is arranged between cover plate and conductive layer, and IC conducting connection is led
Each conducting block of electric layer and pixel control layer each first
Sensing direction electrode array and each second direction sense electrode array,
And timesharing drives and controls pixel control layer and conductive layer.
6. pressure-sensing touch module as claimed in claim 1, its
It is characterised by: farther include the first optical cement layer, described first
Optical cement layer is arranged between pixel control layer and conductive layer, and first
Optical cement layer is the transparent optical that young's modulus is less than or equal to 0.2Gpa
Flexible glue layer.
7. pressure-sensing touch module as claimed in claim 6, its
It is characterised by: described first optical cement layer thickness is 20-100 μm.
8. pressure-sensing touch module as claimed in claim 1, its
It is characterised by: farther include a display module and one second optics
Glue-line, described second optical cement layer is arranged at described conductive layer and institute
State between display module.
9. pressure-sensing touch module as claimed in claim 8, its
It is characterised by: described second optical cement layer is that young's modulus is more than
Clear hard glue-line in 0.5Gpa.
10. pressure-sensing touch module as claimed in claim 9,
It is characterized in that: the thickness of described second optical cement layer is more than or equal to
30μm。
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108268180A (en) * | 2018-04-11 | 2018-07-10 | 京东方科技集团股份有限公司 | Pressure touch device, the feedback method of pressure touch, touch control display apparatus |
| TWI639109B (en) | 2017-06-26 | 2018-10-21 | 英屬開曼群島商敦泰電子有限公司 | A pressure correction method and a pressure correction system for a capacitive pressure sensing panel |
| CN109101142A (en) * | 2018-08-03 | 2018-12-28 | 武汉华星光电半导体显示技术有限公司 | Touch panel, display panel, display device and touch control detecting method |
| US11122355B2 (en) | 2016-12-12 | 2021-09-14 | Pixart Imaging Inc. | Headset controller |
| CN115190246A (en) * | 2022-08-01 | 2022-10-14 | 维沃移动通信有限公司 | Imaging device and electronic apparatus |
-
2016
- 2016-01-26 CN CN201620077551.2U patent/CN205540645U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11122355B2 (en) | 2016-12-12 | 2021-09-14 | Pixart Imaging Inc. | Headset controller |
| TWI763645B (en) * | 2016-12-12 | 2022-05-11 | 原相科技股份有限公司 | Headset controller |
| TWI639109B (en) | 2017-06-26 | 2018-10-21 | 英屬開曼群島商敦泰電子有限公司 | A pressure correction method and a pressure correction system for a capacitive pressure sensing panel |
| CN108268180A (en) * | 2018-04-11 | 2018-07-10 | 京东方科技集团股份有限公司 | Pressure touch device, the feedback method of pressure touch, touch control display apparatus |
| CN108268180B (en) * | 2018-04-11 | 2020-03-10 | 京东方科技集团股份有限公司 | Pressure touch device, pressure touch feedback method and touch display device |
| CN109101142A (en) * | 2018-08-03 | 2018-12-28 | 武汉华星光电半导体显示技术有限公司 | Touch panel, display panel, display device and touch control detecting method |
| CN115190246A (en) * | 2022-08-01 | 2022-10-14 | 维沃移动通信有限公司 | Imaging device and electronic apparatus |
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