CN106557246A - A kind of three-dimensional input module - Google Patents
A kind of three-dimensional input module Download PDFInfo
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- CN106557246A CN106557246A CN201510642335.8A CN201510642335A CN106557246A CN 106557246 A CN106557246 A CN 106557246A CN 201510642335 A CN201510642335 A CN 201510642335A CN 106557246 A CN106557246 A CN 106557246A
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- pressure sensitivity
- layer
- pressure
- input module
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Position Input By Displaying (AREA)
- Electronic Switches (AREA)
Abstract
The present invention provides a kind of three-dimensional input module, including one first touch control electrode layer and a second touch control electrode layer, a plurality of first direction touch control electrode is provided with first touch control electrode layer, a plurality of second direction touch control electrode is provided with the second touch control electrode layer, the three-dimensional input module further includes the compound pressure sensitivity layer of a flexibility, the compound pressure sensitivity layer includes a flexible substrate layer, the flexible substrate layer opposite sides is respectively arranged with one first pressure sensitivity layer and one second pressure sensitivity layer, at least one first pressure sensitivity unit and at least one second pressure sensitivity unit are respectively arranged with the first pressure sensitivity layer and the second pressure sensitivity layer, the first pressure sensitivity unit and the second pressure sensitivity unit produce pressure signal in response to touch control operation, the three-dimensional input module detects pressure signal using self-capacitance mode.Three-dimensional input module provided by the present invention has the advantages of pressure detection sensitivity is high, and noiseproof feature is good.
Description
【Technical field】
The present invention relates to touch-control and pressure sensitivity field, more particularly to a kind of three-dimensional input module.
【Background technology】
With the development of science and technology, touch-control assembly (touch Screen assembly) is extensive
Various consumer-elcetronics devices are applied to, for example：Intelligent mobile phone, tablet PC,
The portable electric products such as camera, e-book, MP3 player, or it is applied to behaviour
Make the display screen of control device.
Existing electronic devices adopt capacitance touching control assembly, and capacitance touching control is total
Into be using human body electric current sensing be operated.Set up with touch surface place surface
Two-dimensional coordinate system (X, Y), general capacitance touching control assembly are provided with the plane
The touch control electrode of X-direction and Y-direction, when finger is touched corresponding to touch control electrode
When in touch-control surface, due to human body electric field, finger changes the electric signal at touch point.
Electronic equipment internal is drawn tactile by the accurate calculating changed to electric signal at touch point
The coordinate position a little in X-direction and Y-direction is touched, that is, determines the two dimension of touch point
The display of position and then control electronics, the operation such as redirect.
For the function of further enriching touch-control assembly, part touch-control assembly is had at present
Independent pressure sensor can be installed additional, the pressure sensor includes multiple pressure sensitivity units,
At touch point pressure sensitivity unit sensing from perpendicular to touch surface (equivalent to Z axis
Direction) pressing force can produce certain deformation so as to cause the electric signal of pressure sensitivity unit
Change, the pressure suffered by pressure sensitivity unit can determine to the detecting of electrical number.
The functions of the equipments being matched with different pressures value can be designed by the detecting of pressure value,
For example under different dynamics, same touch point can match several functions.Be we can from touch
The three-dimensional perspective defined by control point (X, Y) and pressure (Z) goes abundant design.
However, higher and higher today, existing band pressure are being required to electronic equipment
More than the electronic equipment of sensor using single pressure sensing unit thus there is pressure detection
Precision poor, particularly environment resistant interference performance are poor (to have pressure sensitivity signal micro-
Weak and ambient noise problems of too), especially under the change of temperature, pressure sensor
Produced temperature effect signal causes pressure detection precision to reduce；Also therefore, pass through
Development reinforcement pressure sensitivity signal and elimination ambient noise (are made an uproar particular for temperature-compensating etc.
Sound) solution, be required for industry.
【The content of the invention】
To overcome the detecting precision existing for the current electronic equipment with pressure sensor
Low problem, the present invention provide a kind of detecting precision higher three-dimensional input module.
The invention provides a kind of technical scheme for solving above-mentioned technical problem：A kind of three
Dimension input module, including one first touch control electrode layer and a second touch control electrode layer, institute
State and on the first touch control electrode layer, be provided with a plurality of first direction touch control electrode, described second
A plurality of second direction touch control electrode, the three-dimensional input mould are provided with touch control electrode layer
Block using mutual capacitance mode detect in response to touch control operation produce touching signals, described three
Dimension input module further includes the compound pressure sensitivity layer of a flexibility, the compound pressure sensitivity layer
Including a flexible substrate layer, the flexible substrate layer opposite sides is respectively arranged with one
One pressure sensitivity layer and one second pressure sensitivity layer, the first pressure sensitivity layer and the second pressure sensitivity layer
On be respectively arranged with least one first pressure sensitivity unit and at least one second pressure sensitivity unit, institute
State the first pressure sensitivity unit and the second pressure sensitivity unit pressure is produced in response to touch control operation
Signal, the three-dimensional input module detect pressure signal using self-capacitance mode.
Preferably, in pressure signal detecting process, the second pressure sensitivity unit conduct
The temperature-compensating object of the first pressure sensitivity unit.
Preferably, the three-dimensional input module further includes that a three dimensional signal processes electricity
Road, the first pressure sensitivity unit are produced respectively with the corresponding second pressure sensitivity unit
The dry signal linear correlation of heat, by computing electricity is arranged in the three dimensional signal process circuit
Both hot dry signals are cancelled out each other to eliminate pressure signal error in road.
Preferably, the computing circuit be signed magnitude arithmetic(al) circuit, scaling circuit
And the combination of one or more in calculus computing circuit.
Preferably, under pressure signal stacked system, the first pressure sensitivity layer and described
The noise signal of the second pressure sensitivity layer is offset, the double enhancing of pressure signal.
Preferably, the first pressure sensitivity layer is the pressure sensitivity material system using positive temperature coefficient
Into positive temperature coefficient pressure sensitivity layer, the second pressure sensitivity layer is using negative temperature coefficient
Negative temperature coefficient pressure sensitivity layer made by pressure sensitivity material.
Preferably, the positive temperature coefficient absolute value of the positive temperature coefficient pressure sensitivity layer with it is negative
The negative temperature coefficient absolute value of temperature coefficient pressure sensitivity layer is equal or linear.
Preferably as described the of the temperature-compensating object of the first pressure sensitivity unit
Two pressure sensitivity unit materials are identical, and shaped position and size are corresponding.
Preferably, the first pressure sensitivity layer and/or the second pressure sensitivity layer material are piezoelectricity
Material, is the piezoelectric selected from monocrystal, film class, ceramic-like or polymerization species
In one or more combination.
Preferably, the three-dimensional input module further includes an at least thermal insulation layer, institute
State the side that an at least thermal insulation layer is arranged on the compound pressure sensitivity layer.
Compared with prior art, three-dimensional input module provided by the present invention is into such as
Lower advantage：
Three-dimensional input module of the invention can not only detect touch point position, and can
The pressure value of touch point is detected, the three-dimensional input module is provided with a compound pressure sensitivity layer,
Which can be used for detecting the pressing force value at touch point.The compound pressure sensitivity layer is at least wrapped
A flexible substrate layer is included, the flexible substrate layer is made using flexible material, and which can
It is sensitive sense deform upon in the pressure produced by touch point, carry to a certain extent
The pressure detection precision of three-dimensional input module is risen.
The both sides of the flexible substrate layer are provided with the first pressure sensitivity layer and the second pressure sensitivity layer,
The first pressure sensitivity unit being located on the first pressure sensitivity layer and the second pressure sensitivity layer respectively and the second pressure
Sense unit size position corresponds, mutual in the first pressure sensitivity unit and the second pressure sensitivity unit
For temperature-compensating references object when, due to the correspondence of its size positions, its respective institute
As the brought noise warning signal such as temperature and other interference received is unanimously, electric through computing
Road etc. can preferably eliminate other produced by during pressure signal is detected after processing
Noise warning signal.Adherence pressure detects precision；It is especially using just in the first pressure sensitivity layer
It is using negative temperature coefficient that the pressure sensitivity material of temperature coefficient makes the second pressure sensitivity layer
When pressure sensitivity material is made, its can reach temperature-compensating can reach again pressure signal fold
Plus effect.It is overall that there is flexible design, the advantages of rational in infrastructure.
【Description of the drawings】
Fig. 1 is the layer structure schematic diagram of first embodiment of the invention three-dimensional input module.
Fig. 2A is the first touch control electrode layer of first embodiment of the invention three-dimensional input module
Planar structure schematic diagram.
Fig. 2 B are the first touch control electrode layers of first embodiment of the invention three-dimensional input module
With the Overlay schematic diagram of second touch control electrode layer.
Fig. 3 A are the flat of the first pressure sensitivity layer of first embodiment of the invention three-dimensional input module
Face structural representation.
Fig. 3 B are the compound pressure sensitivity layers of first embodiment of the invention three-dimensional input module in figure
The cross-sectional view at IV-IV place in 3A.
Fig. 4 is the change of the compound pressure sensitivity layer of first embodiment of the invention three-dimensional input module
Shape structural representation.
Fig. 5 is the layer structure schematic diagram of second embodiment of the invention three-dimensional input module.
The change of pressure sensitivity unit in Fig. 6 A-6B third embodiment of the invention three-dimensional input module
Shape example structure schematic diagram.
【Specific embodiment】
In order that the purpose of the present invention, technical scheme and advantage become more apparent, with
Lower combination accompanying drawing and embodiment, the present invention will be described in further detail.Should
Understand, specific embodiment described herein only to explain the present invention, and without
It is of the invention in limiting.
Fig. 1 is referred to, first embodiment of the invention three-dimensional input module 10 is from top to bottom
(in the present invention, up and down, top, the position word such as bottom be only used for limiting and specify
Relative position on view, rather than absolute position) include a upper substrate 11, successively
Laminating layer 12, one first touch control electrode layer 131, one first insulating barrier 14, one is combined
Pressure sensitivity layer 10s, one second insulating barrier 14 ', a second touch control electrode layer 132 and
Three dimensional signal process circuit 18.
First insulating barrier 14 and the second insulating barrier 14 ' are respectively as the first touch control electrode layer
131 with the bearing bed of second touch control electrode layer 132, and in 13 (bag of touch control electrode layer
Include the first touch control electrode layer 131 and second touch control electrode layer 132) with compound pressure sensitivity layer
Insulating effect is played between 10s.Wherein, the first touch control electrode layer 131 and the second touch-control electricity
Because the mutual capacitance effect caused by touch control operation can be as two-dimensional position between pole layer 132
(i.e. X and Y-direction) detecting is used, and compound pressure sensitivity layer 10s is then to as another
The detecting of dimension (i.e. Z-direction) pressure value is used.The touch control electrode layer 13 and compound pressure
Sense layer 10s is electrical with three dimensional signal process circuit 18 by conductor wire (figure is not regarded)
Connection.
The upper substrate 11 can be assumed that the touch cover plate for electronic equipment, so-called lid
Plate includes a touch operation surface and a component mounting surface, and its touch operation surface is used for finger
Or pointer etc. carries out touch control operation, component mounting surface is then used for installing touch control electrode group
Part or display module etc..11 material of upper substrate can be PEEK (polyethe
Retherketone polyether-ether-ketones), (Polyimide polyamides is sub- for PI
Amine), (polyethyleneterephthalate gathers right PET
PET), PC (Merlon Merlon), PES are (poly-
EGS ethylene glycol succinate, PMMA (polymethyl methacrylate polymethyl
Methacrylate) and its any material such as both compounds, but not with
This is limited and can use soft glass or thinning glass cover-plate.
Laminating layer 12 can select OCA (Optical transparent adhesive, Optical Clear
) or LOCA (Liquid optical clear adhesive, Liquid Optical Clear Adhesive
Adhesive)。
The three dimensional signal process circuit 18 is arranged under second touch control electrode layer 132
Side, its position are not construed as limiting, and which can also be arranged above second touch control electrode layer 132
Or the other positions of its side etc..
The material of insulating barrier (the first insulating barrier 14 and the second insulating barrier 14 ') is preferred
For SiO2 (silica) or Si3N4 (silicon nitride), can be with other embodiment
From flexible parent metal, with being more preferably transparent flexible material, which can also be firm
Property base material, such as ultra-thin glass, sapphire glass, PI (polyimides), PC are (poly-
Carbonic ester), polyether sulfone (PES), polymethyl methacrylate (PMMA), pressure gram
It is power, acrylic nitrile-butadiene-styrene (ABS), polyamide (PA), poly-
It is benzimidazole polybutene (PB), polybutylene terephthalate (PBT) (PBT), poly-
It is ester (PE), polyether-ether-ketone (PEEK), PEI (PEI), poly-
Etherimide, polyethylene (PE), polyethylene terephthalate (PET),
Polystyrene (PS), polytetrafluoroethylene (PTFE) (PTFE), polyurethane (PU),
Polyvinyl chloride (PVC) L-type PLA (PLLA) etc., is not limited to.
Fig. 2A and Fig. 2 B are referred to, first touch control electrode layer 131 includes a plurality of
The first direction touch control electrode 134 of (X-direction) parallel equidistant arrangement in the first direction,
Second touch control electrode layer 132 is included between a plurality of (Y-direction) in a second direction parallel grade
Away from the second direction touch control electrode 135 of arrangement, X-direction is orthogonal with Y-direction.Described
One direction touch control electrode 134 defines array arrangement with second direction touch control electrode 135
Multiple touch control units, when the touch control unit detects the touch-control behaviour from upper substrate 11
Corresponding electric signal transmission is produced after work to three dimensional signal process circuit 18.
Respectively with 4 first direction touch control electrodes 134 and 4 in Fig. 2A and Fig. 2 B
Carry out as a example by second direction touch control electrode 135 it is schematically illustrate, in fact, quantity is not
It is restricted.Most preferably, the first direction touch control electrode 134 and second direction touch-control
The set location of electrode 135 is complementary.In the present embodiment, the X-direction and Y side
To orthogonal, but the angle angle of X and Y-direction is not construed as limiting.Only with rhombus in diagram
Touch control electrode (first direction touch control electrode 134 and the second direction touch control electrode of strip
135) illustrate as a example by, in fact, the shape of touch control electrode can be series connection
The other shapes such as triangle, the circle of series connection, rectangle, waveform, which is not limited
It is fixed.Touch control electrode material can be indium-tin-oxide (ITO), CNT, Graphene,
Nano-silver thread, metal grill etc..
As shown in fig. 1, the compound pressure sensitivity layer 10s at least includes one from top to bottom
First pressure sensitivity layer 15, a flexible substrate layer 16 and one second pressure sensitivity layer 17, it is described
First pressure sensitivity layer 15 and the second pressure sensitivity layer 17 are arranged on 16 both sides of flexible substrate layer simultaneously
Using flexible substrate layer 16 as bearing bed.
Fig. 3 A are referred to, on the first pressure sensitivity layer 15, at least one first is provided with
Pressure sensitivity unit 151, only with the first pressure sensitivity unit 151 of 5 × 8 row arrays of row in Fig. 3 A
As a example by illustrating, its actual quantity and Array Design are not restricted, depending on specifically needing
Depending on asking.The first pressure sensitivity unit 151 is rectangle, and its shape can also be other
Polygon, it is circular, it is trapezoidal etc. it is irregularly shaped in one or more.
Must notice, for example, on the first pressure sensitivity layer 15 per one first pressure sensitivity unit
151 can be connected to integrated circuit by two conductor wires forms closing conductive loops, in order to sharp every
One first pressure sensitivity unit 151 performs the detecting of self-capacitance pressure sensitivity, on the first pressure sensitivity layer 15
A plurality of conductor wire first can carry out signal through this layer of corresponding flexible circuit board (not shown)
Derive；In the same manner, the second pressure sensitivity layer 17 also can be respective per one second pressure sensitivity unit 171
Form closing conductive loops to detect with sharp self-capacitance pressure sensitivity, and it is corresponding soft by this layer
Property circuit board (not shown) carries out signal derivation.
Fig. 3 B are referred to, Fig. 3 B are the cut away view at IV-IV place along Fig. 3 A, are located at
The first pressure sensitivity layer 15 and the second pressure sensitivity layer 17 of 16 upper and lower surface of the flexible substrate layer
Geomery and position correspondence, are provided with the second pressure sensitivity unit on the second pressure sensitivity layer 17
171, position between multiple first pressure sensitivity units 151 and multiple second pressure sensitivity units 171
Correspond.171 preferred material phase of first pressure sensitivity unit 151 and the second pressure sensitivity unit
Together.Touch control operation person when the upper surface of upper substrate 11 carries out touch control operation, the touch-control
Corresponding at least one first pressure sensitivity unit 151 at point, or at least one first pressure sensitivity unit
151 will be under pressure simultaneously with least one second pressure sensitivity unit 171.
Fig. 4 is referred to, as the variant embodiment of first and second pressure sensitivity layer 15,17：
First pressure sensitivity layer 15 ' prolongs first direction (e.g. X-direction) arrangement PVDF from multiple
(Polyvinylidene Fluoride polyvinyladine florides) piezoelectricity bar 151 ' (equivalent to
First pressure sensitivity unit) making, and the second pressure sensitivity layer 17 ' prolongs second direction from multiple
(e.g. Y-direction) arrangement PVDF piezoelectricity bar 171 ' (equivalent to the second pressure sensitivity unit)
To make；In fact, the first pressure sensitivity unit and the second pressure sensitivity on the first pressure sensitivity layer 15 '
The second pressure sensitivity unit on layer 17 ' can be crisscross arranged with other forms or complementary
Arrange, do not limited to.
The first pressure sensitivity unit 151 and/or the second pressure sensitivity unit 171 are grasped by touch-control
Make produced by pressure and cause deformation, deflection or shear etc. compliance reaction so as to
The piezoelectric for causing at least one electrical property to change, is selected from monocrystal, thin
One or more combination in film class, ceramic-like or polymerization species equipressure electric material.In
Piezoelectric described in specific embodiment can be nano level tin indium oxide (Indium Tin
Oxide, ITO), tin-antiomony oxide (Antimony Doped Tin Oxide, ATO), ZnO
(zinc oxide) and titanium oxide zirconium, indium zinc oxide (IndiumZinc Oxide, IZO),
The metalloid oxides such as zinc oxide aluminum (Aluminum Zinc Oxide, AZO), stone
One or more in English, barium titanate or lead zirconate titanate (PZT) and piezoelectric ceramics etc. etc.
Material with piezoelectricity or pressure drag property.It can also be dispersed in insulation, it is transparent,
Indium tin oxide (ITO) in deformable matrix, the tin oxide (ATO) for mixing antimony,
Mix the zinc oxide (AZO) or the particle of other transparent conductive oxides of aluminium, the base
Matter may include polymeric material, e.g. any one of copolymer or terpolymer),
Preferably transparent piezoelectric of the light transmittance more than 70% (optimum light transmittance is more than 90%)
Material.
The flexible substrate layer 16 is flexible material, it is preferred that thickness is less than 500 μm,
More preferably, thickness is less than 200 μm.16 material of flexible substrate layer can be polymer film,
The polymer film such as includes polyethylene terephthalate (PET), poly- naphthalene two
Formic acid glycol ester (PEN), polymethyl methacrylate (PMMA) or poly- carbonic acid
The film of ester, thin glass sheet (for example, 100 μ m-thicks or thinner) or soda-lime-silica glass.
With being more preferably transparent flexible material, light transmittance is (preferably saturating more than 80%
Light rate is more than 90%).
Three dimensional signal process circuit 18 is integrated on one chip, three dimensional signal process electricity
Road 18 is with processing pressure signal and the function of touching signals.Touch control unit and pressure sensitivity
The touching signals of unit (the first pressure sensitivity unit 151 and the second pressure sensitivity unit 171) and pressure
The detecting mode of force signal has various, in the present invention, is detected using mutual capacitance mode
Touching signals, detect pressure signal by the way of self-capacitance.
The mutual capacitance mode is detected touching signals and is specially：The touch control unit is by
One direction touch control electrode 131 is defined with second direction touch control electrode 132, and which has
Capacity effect, i.e. first direction touch control electrode 131 and second direction touch control electrode 132
Between form electric capacity, top crown of the first direction touch control electrode 131 equivalent to electric capacity,
The second direction touch control electrode 132 works as user's finger equivalent to the bottom crown of electric capacity
Or pointer etc. is when carrying out touch control operation on upper substrate 11, have impact on that touch point is to be touched
Coupling (i.e. mutual capacitance effect) on control unit between bottom crown, so as to change the two
Capacitance between pole plate.The change of the capacitance forms touching signals and is transferred to three
Dimensional signal process circuit 18, after the three dimensional signal process circuit 18 carries out signal transacting
Confirm the position of touch point.
The self-capacitance mode is detected pressure signal and is specially：Each pressure sensitivity unit is at least
Including two electrodes, the pressure sensitivity unit can be measured because of push action by two electrode
Produced pressure signal, two electrode are that a pressure-driven electrode and a pressure are received
Electrode (schemes not regarding, i.e., each pressure sensitivity unit of two electrodes construction is complete loops
Input electrode and output electrode), the pressure-driven electrode receives driving pulse, that is, press
Power driving electrodes send pumping signal, and pressure receiving electrode receives pressure signal and passes through
Circuit conducts pressure signal to three dimensional signal process circuit 18, three dimensional signal process electricity
Road 18 carries out processing to pressure signal and determines pressing force value size.
Pressure sensitivity layer (the first pressure sensitivity layer 15 and the second pressure sensitivity layer 17) is from piezoelectric system
Into its piezoelectric property has otherness because of the difference of its local environment.With the first pressure
Illustrate as a example by sense unit 151, the first pressure sensitivity unit 151 under normal temperature is pressed
During pressure, in theory, the first pressure sensitivity unit 151 should be able to produce size for d's
Pressure signal, but due to the impact of temperature change, 151 actual institute of the first pressure sensitivity unit
The pressure signal D=d+s of generation, s are brought to the first pressure sensitivity unit 151 by temperature
The dry signal of heat, the hot dry signal s change because of the difference of temperature, and this causes
Pressure signal detected by our reality can be with the first pressure sensitivity unit 151 only because of pressure
There is error in produced actual pressure signal, such case is that we are not intended to generation
, when the first pressure sensitivity unit 151 due on the first pressure sensitivity layer 15 is respectively with
On two pressure sensitivity layers 17 the neighbouring corresponding second pressure sensitivity unit 171 of institute have it is substantially the same or
Close thermal coefficient of expansion etc., therefore, the pressure letter brought by the rwo temperature influence
Number measures of dispersion it is equal or approximate (into approximate quantity increase or linear related increase and decrease relation).
Therefore, we can be by the first pressure sensitivity unit 151 on the first pressure sensitivity layer 15 respectively with
On two pressure sensitivity layers 17, the second corresponding pressure sensitivity unit 171 is used as mutual temperature-compensating
References object detects error to eliminate the pressure signal brought by hot dry signal.
As a kind of standards Example for eliminating hot dry signal：The first pressure sensitivity unit
151 or phases identical with the hot dry signal that corresponding second pressure sensitivity unit 171 is produced respectively
Closely, (adopt differential electrical by computing circuit being arranged in three dimensional signal process circuit 18
The combination of road, computing circuit or computing circuit, such as signed magnitude arithmetic(al) circuit, ratio fortune
Calculate circuit, calculus computing circuit etc.) both hot dry signals are cancelled out each other
To eliminate pressure signal error.Using the first pressure sensitivity unit 151 and the second pressure sensitivity unit
Hot dry signal suffered by 171 is identical and any signal processing mode for taking is offsetting
The method of the dry signal of heat is belonged in the design philosophy of temperature-compensating in the present embodiment.
During the actual detecting of pressure signal, not only have hot dry signal and produce, which is also
Other interference signals are had, to illustrate only by taking hot dry signal as an example in the present invention.
Preferably select as one kind, the first pressure sensitivity layer 15 and the second pressure sensitivity layer 17
Made using different material, specially the first pressure sensitivity layer 15 is using positive temperature
Positive temperature coefficient pressure sensitivity layer made by the pressure sensitivity material of coefficient, the second pressure sensitivity layer 17
It is negative temperature coefficient pressure sensitivity layer made by the pressure sensitivity material using negative temperature coefficient, it is described
The positive temperature coefficient absolute value of positive temperature coefficient pressure sensitivity layer and negative temperature coefficient pressure sensitivity layer it
Negative temperature coefficient absolute value linear (including equal).The positive temperature coefficient pressure
The noise warning signal of sense layer and negative temperature coefficient pressure sensitivity layer produced by under the influence of equivalent environment
Size is identical or proportional, but its opposite polarity, therefore, in pressure signal superposition side
Under formula, can directly pass through summation operation circuit (positive temperature coefficient and negative temperature coefficient
Identical situation) or passing ratio computing circuit and summation operation etc. combination by described
The noise signal of one pressure sensitivity layer 15 and the second pressure sensitivity layer 17 is offset (i.e. such as first
Pressure signal D1=d+s produced by 151 reality of pressure sensitivity unit, and the second pressure sensitivity unit
Pressure signal D2=d-s produced by 171 reality, under pressure signal stacked system,
D1+D2=d+s+d-s=2d), pressure signal at least obtains double enhancing.Using positive temperature
The pressure sensitivity material of degree coefficient not only can be reached with the cooperation of the pressure sensitivity material of negative temperature coefficient
The noise reduction brought by temperature-compensating is arrived, which has also reached pressure signal superposition institute
The pressure signal enhancing effect brought.
Compared with prior art, the three-dimensional input module 10 submitted to by the present invention at least has
Have the following advantages：
1. present invention three-dimensional input module 10 can not only detect touch point position, and
The pressure value of touch point can be detected, the three-dimensional input module 10 is provided with one and is combined
Pressure sensitivity layer 10s, which can be used for detecting the pressing force value at touch point.The compound pressure
Sense layer 10s at least includes a flexible substrate layer 16, and the flexible substrate layer 16 is using soft
Property material make, which sensitive can sense shape occurs in the pressure produced by touch point
Become, improve the pressure detection spirit precision of three-dimensional input module 10 to a certain extent.
The both sides of the flexible substrate layer 16 are provided with the first pressure sensitivity layer 15 and the second pressure sensitivity
Layer 17, respectively the first pressure sensitivity on the first pressure sensitivity layer 15 and the second pressure sensitivity layer 17
Unit 151 and 171 size positions of the second pressure sensitivity unit are corresponded, in the first pressure sensitivity
During the references object of unit 151 and the second temperature-compensating each other of pressure sensitivity unit 171, by
In the correspondence of its size positions, which is each suffered such as temperature and other interference institute bands
The noise warning signal for coming is consistent, after the process such as computing circuit can preferably eliminate pressure
Other noise warning signals produced by during force signal detecting.Adherence pressure detects precision；
Especially the first pressure sensitivity layer 15 be made using the pressure sensitivity material of positive temperature coefficient it is described
When second pressure sensitivity layer 17 is to be made using the pressure sensitivity material of negative temperature coefficient, which is i.e. reachable
The effect of pressure signal superposition can be reached again to temperature-compensating.It is overall that there is design spirit
It is living, the advantages of rational in infrastructure.
2. the detecting of touch point position in the present invention uses the mode of mutual capacitance and detects
Survey, in response to the touching signals type produced by push action be capacitance signal, first
Pressure sensitivity layer 15 and the second pressure sensitivity layer 17 are made using piezoelectric, and which is in response to pressing
Pressure signal type produced by action is also capacitance signal, touching signals and pressure letter
Number response signal type identical (being all electric capacity signal), its be easy to the detecting of signal and
Process.Especially in signal transacting, due to the type of described two signals it is identical,
The production firm of three-dimensional input module 10 need not design two sets of independent hardware devices and come right
Pressure signal and touching signals are processed, using integrated three-dimensional letter on a chip
Number process circuit 18 can realize that touching signals and the process of pressure signal (are supported
Self-capacitance during mutual capacitance measurement and pressure sensitivity during touch-control such as measures at the capacitance signal detecting).
The integrated level of three-dimensional input module 10 is which enhanced, the cost of hardware device is reduced.
The signal detection pattern is equally applicable to the other embodiment of the present invention.
Fig. 5 is referred to, second embodiment of the invention three-dimensional input module 50 is from top to bottom
Successively including a upper substrate 511, one first touch control electrode layer 512, substrate layer 513,
One second touch control electrode layer 514, a laminating layer 52, a compound pressure sensitivity layer 50s and
Three dimensional signal process circuit 58, substrate layer 513 are made for transparent insulation material, thereon
Lower surface is respectively as the first touch control electrode layer 512 and second touch control electrode layer 514
Bearing bed.Pressure sensitivity layer 10s is combined in the compound pressure sensitivity layer 50s and first embodiment
Structure and pressure signal detecting principle are consistent, and which is from top to bottom successively including one first pressure
Sense layer 55, a flexible substrate layer 56 and one second pressure sensitivity layer 57, first pressure
Sense layer 55 and the second pressure sensitivity layer 57 are arranged on 56 both sides of flexible substrate layer and with flexibility
Substrate layer 56 is used as bearing bed.The present embodiment is the difference is that only with the first enforcement：
The compound pressure sensitivity layer 50s is not embedded in the first touch control electrode layer 512 and second and touches
Between control electrode layer 514, but it is positioned at the first touch control electrode layer 512 and second and touches
Control 514 homonymy of electrode layer.That is the first touch control electrode layer 512 and second touch control electrode layer
514 are located between upper substrate 511 and compound pressure sensitivity layer 50s.
The compound pressure sensitivity layer 50s of the three-dimensional input module 50 proposed by this enforcement is located at and touches
Control electrode layer (including the first touch control electrode layer 512 and second touch control electrode layer 514) one
Side, due to touch control electrode layer and compound pressure sensitivity layer 10s it is relatively independent, therefore, Liang Zheke
Made by different vendor with separating, then can be made by simple laminating and both be had
There is touch detection again with pressure detection with three-dimensional input module 50, in manufacture
Mutual independence can reduce the fraction defective of final finished to a certain extent.This kind outer
The setting of hanging structure causes the maintenance of three-dimensional input module 50 to become possibility, works as touch-control
When electrode layer or compound pressure sensitivity layer 50s a portions go wrong, we can be with non-
The replacement operation of corresponding component is easily carried out often.In order to cater to the needs in market, pass
The contact panel of the single function of system will be on the verge of being replaced, but using provided by the present invention
Three-dimensional input module 50 is quite different, and we can be being passed by the simple operations such as laminating ground
The side plug-in one of system contact panel is combined pressure sensitivity layer 50s to realize to conventional touch face
" upgrading " of plate, it is to avoid the conventional touch panel made is eliminated what is brought
Energy waste, and no matter existing contact panel to be which kind of structure can pass through plug-in
" upgrading " is realized in formula design.
First touch control electrode layer 512 can be arranged on base with second touch control electrode layer 514
The relative both sides of material layer 513, i.e., such as glass thin membrane type (Glass-film type；GF2)
Framework, which can also be separately positioned on different substrate layers, i.e., such as diaphragm type
(Glass-film-film type；GFF), or the first touch control electrode layer 512 and second is touched
Control electrode layer 514 is interlaced, i.e., be touch-control (single-side type as built bridge；SITO)
Or both between no overlap, i.e., as one-layer multi-point touch control (non-cross type) shape
Formula is arranged in the same plane.
Refer to Fig. 6 A, third embodiment of the invention three-dimensional input module (non-label) with
First embodiment three-dimensional input module 10 the difference is that only：First pressure sensitivity unit
751a is different from the first pressure sensitivity unit 151 (referring to Fig. 3 A) in first embodiment, tool
Body be the first pressure sensitivity unit 751a be square-wave-shaped, due to pressing when, pressure sensitivity material
Marginal portion is easier to experience pressure and deform so as to cause sending out for pressure signal
It is raw, therefore the first pressure sensitivity unit 751a is set to into square-wave-shaped, due to the square-wave-shaped
First pressure sensitivity unit 751a marginal portions size substantially increases, the first pressure sensitivity unit 751a
There is better pressure detection sensitivity.The first pressure sensitivity unit 751a shapes are also
Can be polyline shaped (such as the first pressure sensitivity unit 751b in Fig. 6 B), convoluted or its
His shape such as irregular.First pressure sensitivity unit 751a and/or the second pressure sensitivity unit size are most
It is good to be less than or equal to 1 square centimeter, to preferable pressure detection density can be obtained.
More particularly, when the directionality that the first pressure sensitivity unit 751a is used
Pressure-strain pressure sensitivity material, the directionality pressure-strain pressure sensitivity material have direction special
Property：In some or multiple specific directions occur strain responses (effective strain react,
Sliding pressure action towards specific direction is detected for example) when, which can detect accordingly
Pressure signal, conversely, being difficult to strain responses in unspecified directions, or occurs
During strain responses (invalid strain responses), which can hardly be detected pressure signal
Generation or the probability that can be detected of pressure signal it is relatively low.If can adopt in Fig. 6 A
With the directionality pressure-strain pressure sensitivity material in Y-direction, then the first pressure sensitivity unit
When 751a produces strain responses in the Y direction, produced by the first pressure sensitivity unit 751a
Pressure signal can be detected, conversely, in the X direction (in unspecified directions)
During generation strain responses, pressure signal is difficult to produce.Having from these material behaviors
Beneficial effect is that finer detecting is carried out to pressure direction.
As in Fig. 6 B, the first pressure sensitivity unit 751b adopts 45 ° (only to carry out as a example by 45 °
Illustrate, which can also be that other are arbitrarily angled) direction of effective strain reaction on path
Property pressure-strain pressure sensitivity material；Certainly, the first pressure sensitivity unit 751a may also be configured to
The directionality pressure-strain pressure sensitivity material of effective strain reaction can occur on few 2 directions
(mean value of the pressure signal in desirable multiple directions to calculate total pressure signal).
Thus, the first pressure sensitivity unit 751a and its variant embodiment can be used to be configured in it is specific
At touch point, for enriching function or raising touch-control sensitivity at single touch point
To avoid operational error from bringing signal to judge by accident.
Fourth embodiment of the invention three-dimensional input module (not shown) is implemented with first
Three-dimensional input module 10 in example the difference is that only：The three-dimensional input module
Between its compound pressure sensitivity layer and upper substrate, an at least thermal insulation layer is selectively set, due to
Three-dimensional input module is either applied to the electricity of consumer electronics product or industrial class etc.
Sub- product, used as touch operation surface, which is exposed in air the upper substrate, heat
Easily it is transferred to inside three-dimensional input module from upper substrate.The thermal insulation layer act as resistance
Value heat passes to compound pressure sensitivity layer from upper substrate direction, it is to avoid temperature change is to compound
The hot dry effect brought by pressure sensitivity layer.Further, can be below compound pressure sensitivity layer
Arrange another thermal insulation layer to prevent the heat produced by display device etc. from affecting pressure signal
Detecting precision.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit this
Invention, all any modifications for being made within the principle of the present invention and change equivalent
Entering etc. all should be comprising within protection scope of the present invention.
Claims (10)
1. a kind of three-dimensional input module, including one first touch control electrode
Layer and a second touch control electrode layer, on first touch control electrode layer
It is provided with a plurality of first direction touch control electrode, the second touch-control electricity
A plurality of second direction touch control electrode, the three-dimensional are provided with the layer of pole
Input module is detected using mutual capacitance mode and is produced in response to touch control operation
Raw touching signals, it is characterised in that：The three-dimensional input module enters
One step includes the compound pressure sensitivity layer of a flexibility, the compound pressure sensitivity layer
Including a flexible substrate layer, the flexible substrate layer opposite sides point
One first pressure sensitivity layer and one second pressure sensitivity layer be not provided with, described
At least one is respectively arranged with one pressure sensitivity layer and the second pressure sensitivity layer
First pressure sensitivity unit and at least one second pressure sensitivity unit, described first
Pressure sensitivity unit and the second pressure sensitivity unit are produced in response to touch control operation
Raw pressure signal, the three-dimensional input module adopt self-capacitance mode
Detecting pressure signal.
2. three-dimensional input module as claimed in claim 1, its feature
It is：In pressure signal detecting is processed, the second pressure sensitivity list
Temperature-compensating object of the unit as the first pressure sensitivity unit.
3. three-dimensional input module as claimed in claim 2, its feature
It is：The three-dimensional input module further includes a three dimensional signal
Process circuit, the first pressure sensitivity unit and corresponding described second
The hot dry signal linear correlation that pressure sensitivity unit is produced respectively, by institute
State
Dry signal is cancelled out each other to eliminate pressure signal error.
4. three-dimensional input module as claimed in claim 3, its feature
It is：The computing circuit be signed magnitude arithmetic(al) circuit, ratio fortune
The combination of one or more in calculation circuit and calculus computing circuit.
5. three-dimensional input module as claimed in claim 2, its feature
It is：Under pressure signal stacked system, the first pressure sensitivity layer
Offset with the noise signal of the second pressure sensitivity layer, pressure
The double enhancing of signal.
6. three-dimensional input module as claimed in claim 5, its feature
It is：The first pressure sensitivity layer is the pressure sensitivity using positive temperature coefficient
Positive temperature coefficient pressure sensitivity layer made by material, the second pressure sensitivity layer
It is negative temperature coefficient made by the pressure sensitivity material using negative temperature coefficient
Pressure sensitivity layer.
7. three-dimensional input module as claimed in claim 6, its feature
It is：The positive temperature coefficient of the positive temperature coefficient pressure sensitivity layer is absolute
It is worth the negative temperature coefficient absolute value with the negative temperature coefficient pressure sensitivity layer
It is equal or linear.
8. three-dimensional input module as claimed in claim 2, its feature
It is：As the temperature-compensating object of the first pressure sensitivity unit
The second pressure sensitivity unit material is identical, shaped position and size pair
Should.
9. three-dimensional input module as claimed in claim 1, its feature
It is：The first pressure sensitivity layer and/or the second pressure sensitivity layer material
For piezoelectric, be selected from monocrystal, film class, ceramic-like or
One or more combination in the piezoelectric of polymerization species.
10. three-dimensional input module as claimed in claim 1, which is special
Levy and be：The three-dimensional input module further include at least one every
Thermosphere, an at least thermal insulation layer are arranged on the compound pressure sensitivity layer
Side.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642335.8A CN106557246B (en) | 2015-09-30 | 2015-09-30 | Three-dimensional input module |
| TW105206262U TWM526125U (en) | 2015-09-30 | 2016-05-02 | Three-dimensional input module |
| TW105113663A TWI579756B (en) | 2015-09-30 | 2016-05-02 | Three-dimensional input module |
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|---|---|---|---|
| CN201510642335.8A CN106557246B (en) | 2015-09-30 | 2015-09-30 | Three-dimensional input module |
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| CN106557246B CN106557246B (en) | 2023-07-21 |
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| TW (2) | TWM526125U (en) |
Cited By (4)
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| CN107193425A (en) * | 2017-07-01 | 2017-09-22 | 苏州能斯达电子科技有限公司 | A kind of pressure-sensitive 3D contactor control devices |
| CN108733249A (en) * | 2017-04-20 | 2018-11-02 | 宏达国际电子股份有限公司 | Handheld electronic device, touch detector and touch detection method thereof |
| CN109917942A (en) * | 2017-12-13 | 2019-06-21 | 南昌欧菲显示科技有限公司 | Pressure sensing assembly, touch screen and mobile terminal |
| EP3722934A4 (en) * | 2017-12-07 | 2021-08-11 | BOE Technology Group Co., Ltd. | Feature recognition structure, manufacturing method, driving method and relevant apparatus |
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| CN106557246B (en) * | 2015-09-30 | 2023-07-21 | 宸鸿科技(厦门)有限公司 | Three-dimensional input module |
| CN107728356B (en) * | 2016-08-12 | 2020-11-03 | 鸿富锦精密工业（深圳）有限公司 | Embedded touch liquid crystal display panel and embedded touch liquid crystal display module |
| CN113110765A (en) * | 2021-05-21 | 2021-07-13 | 业成科技（成都）有限公司 | Touch panel |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI579756B (en) | 2017-04-21 |
| CN106557246B (en) | 2023-07-21 |
| TW201714068A (en) | 2017-04-16 |
| TWM526125U (en) | 2016-07-21 |
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