CN105630240B - A kind of multi-point touch panel based on piezoelectric material - Google Patents
A kind of multi-point touch panel based on piezoelectric material Download PDFInfo
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- CN105630240B CN105630240B CN201510992890.3A CN201510992890A CN105630240B CN 105630240 B CN105630240 B CN 105630240B CN 201510992890 A CN201510992890 A CN 201510992890A CN 105630240 B CN105630240 B CN 105630240B
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- piezoelectric material
- potential difference
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- touch panel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
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- Engineering & Computer Science (AREA)
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- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of multi-point touch panels based on piezoelectric material, including upper substrate, lower substrate, multiple piezoelectric material modules and for according to collecting the positioning mark of instantaneous potential difference and piezoelectric material module to calculate the control module for touching point coordinates, multiple piezoelectric material modules are arranged with the arrangement mode of matrix array between upper substrate and lower substrate, and multiple piezoelectric material modules are connect with control module.The present invention has many advantages, such as material and shape beautiful, that save energy expenditure and the object to touching screen there is no special requirement, and operation ease height and flexibility are high.The present invention can be widely applied to as a kind of multi-point touch panel based on piezoelectric material in touch screen field.
Description
Technical field
The present invention relates to touch screen more particularly to a kind of multi-point touch panels based on piezoelectric material.
Background technology
With the development of information technology, man-machine interaction mode has been not only limited to the tradition sides such as mouse, keyboard, display
Formula, more convenience, quick, intuitive way are affecting our life, wherein touch screen is as most common novel people
One of machine interactive mode is obtaining rapid development in the past 20 years.And at present according to the type of sensor, the touch screen
It is generally divided into this four class touch of capacitive touch screen, resistive touch screen, infrared-type touch screen and surface acoustic wave touch screen
Screen.But these currently used touch screens have many disadvantages, such as：1, for surface acoustic wave touch screen and infrared ray
Formula touch screen, since their realization needs to occupy the space on display screen, this can make appearance be touched not as good as diaphragm type
The beauty of screen；2, for capacitive touch screen and resistive touch screen, they need periodic scanning screen to realize touch detection,
Therefore the consumption of more energy can be caused；3, the capacitive touch screen is a kind of type of touch screens now of greatest concern,
But it is to determine therefore the position that finger touches then requires to be used for touching in this way according to the capacitance variations of touch screen surface
Object be necessary for conductor, and insulating material touches its surface then and can not make its response, for example in cold winter, takes
It cannot be operated using capacitive touch screen to realize after gloves, the convenience of operation and flexibility are low.
Invention content
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of beauty, reduction energy expenditure and operations just
Profit, the high multi-point touch panel based on piezoelectric material of flexibility.
The technical solution adopted in the present invention is：A kind of multi-point touch panel based on piezoelectric material, including upper substrate, lower base
Plate, multiple piezoelectric material modules and for according to the positioning mark for collecting instantaneous potential difference and piezoelectric material module to
The control module for touching point coordinates is calculated, multiple piezoelectric material modules are arranged with the arrangement mode of matrix array in upper substrate
Between lower substrate, multiple piezoelectric material modules are connect with control module.
Further, the control module includes：
Pulse detection submodule, for generating instantaneous potential difference between detecting piezoelectric material module upper and lower surface
When, then the positioning for the piezoelectric material module for currently generating instantaneous potential difference mark and instantaneous potential difference are sent to fixation and recognition
Submodule；
Fixation and recognition submodule, for according to the positioning mark of the piezoelectric material module that receives and instantaneous potential difference,
It calculates and touches point coordinates, be then sent to instantaneous potential difference caused by the piezoelectric material module corresponding to touch point coordinates dynamic
Make identification submodule；
Action recognition submodule, for the situation of change according to the instantaneous potential difference received, to judge the dynamic of input
Make；
Output sub-module is responded, for according to the action for touching point coordinates and input, carrying out corresponding response output.
Further, the calculating touches point coordinates, and used calculation formula is：
Wherein, (xA,yA) it is expressed as the coordinate of touch point, A indicates a touch area, ui·jPositioning is expressed as to be identified as
Instantaneous potential difference caused by the piezoelectric material module of (i, j).
Further, the action recognition submodule is specifically used for according to positive instantaneous potential difference and reversed instantaneous potential difference production
Raw time interval and number, to judge the action of input for single-click operation or double click operation.
Further, the piezoelectric material module includes piezoelectric material layer, upper surface lead and lower surface lead, the piezoelectricity
The upper surface of material layer is equipped with top electrode, and the lower surface of the piezoelectric material layer is equipped with lower electrode, and the top electrode passes through upper table
Face lead is connect with control module, and the lower electrode is connect by lower surface lead with control module.
Further, upper glue line, the lower electricity are equipped between the upper surface of the top electrode and the lower surface of upper substrate
Pole and lower surface and the upper surface of lower substrate between be equipped with lower glue line.
Further, the piezoelectric material layer is realized using patch of piezoelectric material or piezoelectric material film.
Further, the top electrode and lower electrode are metal electrode or high molecular material electrode.
Further, the shape of the piezoelectric material module be square, circle, rectangle, triangular form or bar shaped.
Further, the upper substrate or lower substrate are transparent glass, acrylic board, plank, cement plate or rubber slab.
The beneficial effects of the invention are as follows：Cause touch screen to deform upon by touching, makes piezoelectric material module upper and lower surface
Potential difference is generated, to trigger wake-up touch screen, and according to collected potential difference and the positioning mark of piezoelectric material module
Know to calculate the coordinate of touch point, positioning is touched to realize.Thus, the touch screen of the present invention is not only not necessarily to occupy display
Space on screen achievees the effect that beauty, but also is not necessarily to timing scan screen, greatlys save the consumption of energy, and to touching
Touch the object of screen material and shape there is no special requirements, improve convenience and the flexibility of operation.
Description of the drawings
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of sectional view of the multi-point touch panel based on piezoelectric material of the present invention；
Fig. 2 is a kind of exploded view of the multi-point touch panel based on piezoelectric material of the present invention；
Fig. 3 is a kind of birds-eye perspective of the multi-point touch panel based on piezoelectric material of the present invention；
Fig. 4 is the sectional view of piezoelectric material module in a kind of multi-point touch panel based on piezoelectric material of the present invention；
Fig. 5 is a kind of upper surface face upwarding view of the multi-point touch panel based on piezoelectric material of the present invention；
Fig. 6 is a kind of lower surface face upwarding view of the multi-point touch panel based on piezoelectric material of the present invention；
Fig. 7 is touch area schematic diagram；
Fig. 8 is a specific embodiment structural frames of control module in a kind of multi-point touch panel based on piezoelectric material of the present invention
Figure.
1, upper substrate；2, lower substrate；3, piezoelectric material module；
31, piezoelectric material layer；32, top electrode；33, lower electrode；34, upper surface lead；35, lower surface lead；36, upper viscous
Gum deposit layer；37, lower glue line；
4, touch area.
Specific implementation mode
As shown in Figure 1 to Figure 3, a kind of multi-point touch panel based on piezoelectric material, including it is upper substrate 1, lower substrate 2, multiple
Piezoelectric material module 3 and the positioning that instantaneous potential difference and piezoelectric material module 3 are collected for basis identify to calculate
The control module of point coordinates is touched, multiple piezoelectric material modules 3 are arranged with the arrangement mode of matrix array in 1 He of upper substrate
Between lower substrate 2, multiple piezoelectric material modules 3 are connect with control module.One piezoelectric material module 3 corresponds to one only
One positioning identifies P_ID, and identifies P_ID by positioning and can recognize that position of the piezoelectric material module 3 on substrate, such as Fig. 3
It is shown.
As shown in figure 4, for the piezoelectric material module 3, structure is preferably：The piezoelectric material module 3 includes
The upper surface of piezoelectric material layer 31, upper surface lead 34 and lower surface lead 35, the piezoelectric material layer 31 is equipped with top electrode 32,
The lower surface of the piezoelectric material layer 31 is equipped with lower electrode 33, and the top electrode 32 is connected by upper surface lead 34 and control module
It connects, the lower electrode 33 is connect by lower surface lead 35 with control module；
Preferably, upper glue line 36 is equipped between the upper surface of the top electrode 32 and the lower surface of upper substrate 1, it is described
Lower electrode 33 and lower surface and the upper surface of lower substrate 2 between be equipped with lower glue line 37, to make multiple piezoelectric material moulds
Block 3 is fixed between upper substrate 1 and lower substrate 2.
For above-mentioned upper substrate 1 and lower substrate 2, they are made of insulating materials, are preferably transparent glass, acrylic
The plate or plank of nontransparent smooth surface, cement plate or rubber slab etc. are (for transparent touch-sensitive panel, it is necessary to high using transparency
Glass, PTE plates etc.), play the role of fixed and protect piezoelectric material module, the upper and lower base plate that can select identical material
(for transparent touch-sensitive panel, then it must be transparent material simultaneously to require upper and lower base plate material, but it is thoroughly for material or different materials
Bright material can be the same or different).
For above-mentioned piezoelectric material module 3, shape is square, circle, rectangle, triangular form or bar shaped.
It is a patch of piezoelectric material or piezoelectric material film, it is necessary to by with piezoelectricity for above-mentioned piezoelectric material layer 31
The material of characteristic is made, and can be the materials such as piezoelectric ceramics, PVDF, quartz crystal (for transparent touch-sensitive panel, it is required that being necessary for
By the PVDF of high temperature specially treated, PVDF is fabricated to pellucidity).
For the top electrode 32 and lower electrode 33, they must select same material, be preferably aluminium, silver, copper etc.
The high molecular material electrode that metal electrode or ITO, nano-Ag particles form is (for transparent touch-sensitive panel, it is required that be necessary for
Bright ITO electrode or transparent nano silver electrode).
For above-mentioned upper glue line 36 and lower glue line 37, they are insulating properties adhesive glue (for transparent touch
Screen, it is required that glue line is necessary for transparent resin silica gel).
For above-mentioned upper surface lead 34 and lower surface lead 35, they can be the plain conductors such as silver, copper (for saturating
Bright touch screen can be ITO leads, transparent nano silver wire or graphene etc. it is required that being necessary for transparent conductors), upper surface
Lead 34 and lower surface lead 35 by the connection corresponding with top electrode 32 and lower electrode 33 respectively of the modes such as conducting resinl or welding,
And then the instantaneous potential difference of generation is sent to control module.And for the piezoelectric material module 3 of each row, their upper surface
Lead 34 is drawn from upper right side, and as shown in Figure 4 and Figure 5, and their lower surface lead 35 draws such as Fig. 4 and figure from lower left
Shown in 6.
It is further used as preferred embodiment, as shown in figure 8, the control module includes：
Pulse detection submodule, for generating instantaneous potential between detecting 3 upper and lower surface of piezoelectric material module
When poor, then the positioning for the piezoelectric material module 3 for currently generating instantaneous potential difference mark and instantaneous potential difference are sent to positioning
Identify submodule；
Fixation and recognition submodule, for according to the positioning mark of the piezoelectric material module 3 that receives and instantaneous potential difference,
It calculates and touches point coordinates, be then sent to instantaneous potential difference caused by the piezoelectric material module 3 corresponding to touch point coordinates
Action recognition submodule；
Action recognition submodule, for the situation of change according to the instantaneous potential difference received, to judge the dynamic of input
Make；
Output sub-module is responded, for according to the action for touching point coordinates and input, carrying out corresponding response output.
It is obtained by above-mentioned, the course of work of control module of the present invention is specially：
Whether S1, pulse detection submodule have instantaneous electricity between detecting each 3 upper and lower surface of piezoelectric material module
Potential difference generates, if so, then indicating that object is pressed into screen surface, that is, indicates that screen is in wake-up states at this time, at this point, pulse
Detection sub-module then will currently generate the positioning mark P_ID (i, j) of the piezoelectric material module 3 of instantaneous potential difference and instantaneous electricity
Potential difference is sent to fixation and recognition submodule；
S2, fixation and recognition submodule is identified according to the positioning of the piezoelectric material module 3 received and instantaneous potential difference, meter
It calculates and touches point coordinates, be then sent to instantaneous potential difference caused by the piezoelectric material module 3 corresponding to touch point coordinates dynamic
Make identification submodule；
Under normal circumstances, piezoelectric material module 3 is less than the touch range of finger, therefore has several piezoelectric material modules 3
Upper and lower surface lead have instantaneous potential difference, so then should according to record each piezoelectric material module 3 instantaneous potential difference and
P_ID calculates the coordinate of touch point；
Specifically, the i in P_ID, j are treated as into x, the coordinate in the directions y, the instantaneous electricity of each piezoelectric material module 3 respectively
Potential difference is as weight coefficient, to calculate the coordinate value of touch point, therefore, point coordinates, institute is touched for the calculating
The calculation formula of use is preferably：
Wherein, (xA,yA) it is expressed as the coordinate of touch point, A indicates (a piezoresistive material in touch area 4 of touch area 4
Material 3 upper and lower surface lead of module has certain potential difference to generate, as shown in Figure 7), ui·jPositioning is expressed as to be identified as (i, j)
Instantaneous potential difference caused by piezoelectric material module 3；
S3, action recognition submodule are according to the situation of change of the instantaneous potential difference received, to judge the action of input；
S4, response output sub-module carry out corresponding response output according to the action for touching point coordinates and input.
It is further used as preferred embodiment, the action recognition submodule is specifically used for according to positive instantaneous potential difference
The time interval and number generated with reversed instantaneous potential difference, to judge the action of input for single-click operation or double click operation.
Electric dipole moment density becomes larger when due to pressing, and both ends are gathered charge and increased, and electric dipole moment density becomes smaller when release, and electricity is gathered at both ends
Lotus is reduced, therefore charge flow direction is different, therefore signal in control module on the contrary, can set generated when pressing in advance
Instantaneous potential difference is positive potential difference, and generated instantaneous potential difference is then reverse potential difference when decontroling finger and unclamping, this
The time interval and number that sample just can be generated according to the instantaneous potential difference of the forward direction received and reversed instantaneous potential difference are to judge
The action of input is that single-click operation or double click operation generate reverse potential difference, so immediately that is, after generating positive potential difference
Then it is determined as single-click operation；And after generating positive potential difference, reverse potential difference is generated immediately, and moment generates forward direction again
And then potential difference generates reverse potential difference again, be then judged to double-clicking manipulation in this way.It, can be with for the time interval
It is modified according to sensitivity requirement difference.
Obtained by above-mentioned, compared to traditional touch screen, the present invention is based on the multi-point touch panel of piezoelectric material have it is excellent
It puts and includes：
1, without occupying the space on display screen, therefore it can achieve the effect that beauty using display screen；
2, there is no particular/special requirement to the shapes of materials of touching object, unlike capacitive touch screen, it is desirable that must lead
Body could carry out touch control, since the touch screen of the present invention is made based on piezoelectric material, use any material shape
The object of shape can operate touch screen, as long as touch material is caused to deform upon, make following table in piezoelectric material module
Face generates potential difference, thus, the touch screen of the present invention has the advantages that operation ease height and flexibility are high；
3, it can accurately detect the position for touching and occurring, i.e. the position of touch point, and because using piezoelectric principle,
Control module can respond the feature of active force according to the speed and size of charge variation, just can be directed to difference in this way
Setting, be the more interactive modes of touch screen design, user's operation experience sense is better；
4, the present invention just can judge whether screen is in wake-up states by having detected whether pulse signal generation, more
Energy expenditure is saved, some capacitances, electric resistance touch screen then need periodic scanning screen to see whether touch, because above touch
Any energy cannot be generated by shielding itself, always Scanning Detction, it would be desirable to be able to measure it is more, and this touch screen be based on piezoelectric principle, pressing
Will produce charge after deformation, these micro charge variations can drive the screen control circuit start of touch screen, thus,
Compared to traditional touch screen, the present invention is based on the multi-point touch panels of piezoelectric material to scan without timing cycle, therefore, it is possible to big
The earth reduces the consumption of energy, reaches energy-efficient effect.
It is to be illustrated to the preferable implementation of the present invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations or be replaced under the premise of without prejudice to spirit of that invention
It changes, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (9)
1. a kind of multi-point touch panel based on piezoelectric material, it is characterised in that：Including upper substrate, lower substrate, multiple piezoelectric materials
Module and the positioning that instantaneous potential difference and piezoelectric material module are collected for basis identify to calculate touch point coordinates
Control module, multiple piezoelectric material modules are arranged with the arrangement mode of matrix array between upper substrate and lower substrate,
Multiple piezoelectric material modules are connect with control module；
The control module includes：
Pulse detection submodule, when for generating instantaneous potential difference between detecting piezoelectric material module upper and lower surface,
The positioning for the piezoelectric material module for currently generating instantaneous potential difference mark and instantaneous potential difference are then sent to fixation and recognition
Module；
Fixation and recognition submodule, for according to the positioning mark of the piezoelectric material module received and instantaneous potential difference, calculating
Point coordinates is touched, instantaneous potential difference caused by the piezoelectric material module corresponding to touch point coordinates, which is then sent to action, knows
Small pin for the case module；
Action recognition submodule, for the situation of change according to the instantaneous potential difference received, to judge the action of input；
Output sub-module is responded, for according to the action for touching point coordinates and input, carrying out corresponding response output.
2. a kind of multi-point touch panel based on piezoelectric material according to claim 1, it is characterised in that：The calculating touch point
Coordinate, used calculation formula are：
Wherein, (xA,yA) it is expressed as the coordinate of touch point, A indicates a touch area, ui·jPositioning is expressed as to be identified as (i, j)
Piezoelectric material module caused by instantaneous potential difference.
3. a kind of multi-point touch panel based on piezoelectric material according to claim 1, it is characterised in that：Action recognition
Module is specifically used for the time interval generated according to positive instantaneous potential difference and reversed instantaneous potential difference and number, defeated to judge
The action entered is single-click operation or double click operation.
4. a kind of multi-point touch panel based on piezoelectric material according to claim 1, it is characterised in that：The piezoelectric material mould
Block includes piezoelectric material layer, upper surface lead and lower surface lead, and the upper surface of the piezoelectric material layer is equipped with top electrode, described
The lower surface of piezoelectric material layer is equipped with lower electrode, and the top electrode is connect by upper surface lead with control module, the lower electricity
Pole is connect by lower surface lead with control module.
5. a kind of multi-point touch panel based on piezoelectric material according to claim 4, it is characterised in that：The top electrode it is upper
Between surface and the lower surface of upper substrate be equipped with upper glue line, the lower electrode and lower surface and lower substrate upper surface it
Between be equipped with lower glue line.
6. a kind of multi-point touch panel based on piezoelectric material according to claim 4 or 5, it is characterised in that：The piezoresistive material
The bed of material is realized using patch of piezoelectric material or piezoelectric material film.
7. a kind of multi-point touch panel based on piezoelectric material according to claim 4 or 5, it is characterised in that：The top electrode
It is metal electrode or high molecular material electrode with lower electrode.
8. a kind of multi-point touch panel based on piezoelectric material according to claim 1, it is characterised in that：The piezoelectric material mould
The shape of block is square, circle, rectangle, triangular form or bar shaped.
9. a kind of multi-point touch panel based on piezoelectric material according to claim 1, it is characterised in that：The upper substrate or under
Substrate is transparent glass, acrylic board, plank, cement plate or rubber slab.
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| CN201510992890.3A CN105630240B (en) | 2015-12-23 | 2015-12-23 | A kind of multi-point touch panel based on piezoelectric material |
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| CN105630240B true CN105630240B (en) | 2018-08-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10761638B2 (en) * | 2016-06-09 | 2020-09-01 | Aito Bv | Detection of piezoelectric sensor elements |
| CN108920000A (en) * | 2018-06-30 | 2018-11-30 | 昆山国显光电有限公司 | Display panel and preparation method thereof |
| CN110618763B (en) * | 2019-08-28 | 2021-02-12 | 华为技术有限公司 | Touch control method and electronic equipment |
| CN111682871B (en) * | 2020-06-04 | 2023-08-22 | 西南大学 | Touch button capable of preventing false triggering |
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| DE2749076A1 (en) * | 1976-12-09 | 1978-06-22 | Kkf Corp | SIGNAL GENERATOR |
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