CN107340897A - Pressure-sensing module and touch display substrate - Google Patents
Pressure-sensing module and touch display substrate Download PDFInfo
- Publication number
- CN107340897A CN107340897A CN201610276062.4A CN201610276062A CN107340897A CN 107340897 A CN107340897 A CN 107340897A CN 201610276062 A CN201610276062 A CN 201610276062A CN 107340897 A CN107340897 A CN 107340897A
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- pressure
- sensing module
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- elastic layer
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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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
Abstract
The present invention relates to a kind of pressure-sensing module and the touch display substrate with the pressure-sensing module.A kind of pressure-sensing module includes substrate, elastic layer, the first electrode layer being cascading；Piezoelectric material layer and a second electrode lay.Wherein, the elastic layer includes multiple micro-structurals, and the plurality of micro-structural forms the surface of bumps.The first electrode layer, the piezoelectric material layer and the second electrode lay, which coordinate, forms pressure-sensing module, and the pressure-sensing module is arranged on the elastic layer, and the pressure of the pressure-sensing module is put on for sensing.
Description
Technical field
The present invention relates to touch-control display field, more particularly to a kind of substrate applied to display device, wherein, the pressure sensor for sensing pressure is provided with the substrate.
Background technology
With the universalness of touch controllable function, many display devices all equipped with the function of touch-control, are operated in a manner of clicking on touch-control.If it can be sub-divided into according to touch-control sensing mode：Electric signal, it is such as resistance-type, condenser type, piezoelectric type and electromagnetic type；Optical signal, it is such as infrared-type；Acoustical signal, it is such as surface acoustic wave type, sound wave conduction, dispersion signal formula and ping formula.However, main flow touch technology now is based on capacitance touching control, compared to the electric resistance touch-control of early stage, condenser type is non-direct contact type touch-control, has higher reliability.
In in general touch control display apparatus, viewing area generally use capacitance touching control, it is that detecting is converted to electric signal as the human finger of conductor close to capacitance variations during contact panel, and by learning the coordinate position that touch panel is touched by finger to the analysis of the electric signal.However, it must be conductor that capacitance touch mode, which is limited to touch body, so then cause the touch manner of contactor control device by larger limitation, operation inconvenience.
Piezoelectric type touch module is to put on the pressure of display device by sensing touch body to identify the coordinate position of touch operation at present, therefore, piezoelectric type touches module to touching the electric conductivity of body and being not limited, and is generally placed in display device to supplement limitation of the capacitive touch device to touch body electric conductivity.However, current piezoelectric type touch-sensing coordinate position accuracy and sensitivity are unsatisfactory.
The content of the invention
In view of this, it is necessary to which a kind of sensing accuracy and the preferable piezoelectric transducer of sensitivity are provided.
Further, there is provided a kind of touch display substrate with the piezoelectric transducer.
A kind of pressure-sensing module, including：
One substrate；
One is arranged at the elastic layer in substrate, and the elastic layer includes multiple micro-structurals, and the plurality of micro-structural forms the surface of bumps；
One first electrode layer；
One piezoelectric material layer；And
One the second electrode lay, wherein, the first electrode layer, the piezoelectric material layer and the second electrode lay, which coordinate, forms pressure-sensing module, and the pressure of the pressure-sensing module is put on for sensing.
A kind of touch display substrate, including a viewing area and fringe region, the viewing area are used for display image, and the fringe region is arranged on the outside of the viewing area, for setting signal cabling, in the fringe region, including：
One is arranged at the elastic layer in substrate, and the elastic layer includes multiple micro-structurals, and the plurality of micro-structural forms the surface of bumps；
One first electrode layer；
One piezoelectric material layer；And
One the second electrode lay, wherein, the first electrode layer, the piezoelectric material layer and the second electrode lay, which coordinate, forms pressure-sensing module, and the pressure-sensing module is arranged on the elastic layer, and the pressure of the pressure-sensing module is put on for sensing.
Compared to prior art, elastic layer is due to periodic arrangement micro-structural, therefore first electrode layer and the capacity area of the second electrode lay are effectively increased, so when piezoelectric sense module is touched and pressed, the first electrode layer and the area of the second electrode lay deformed upon is larger, so as to obtain larger capacitance change and signal, pressure-sensing sensitivity and the precision of piezoelectric sense module are effectively increased.
Brief description of the drawings
Fig. 1 is a kind of stereogram of the touch control display apparatus of better embodiment.
Fig. 2 is the side structure schematic diagram of touch control display apparatus shown in Fig. 1.
Fig. 3 is the planar structure schematic diagram of array base palte in touch control display apparatus shown in Fig. 1.
Fig. 4 is the side structure schematic diagram of first pressure sensing module in pressure-sensing module shown in Fig. 3.
Fig. 5 is the planar structure diagram of elastic layer shown in Fig. 4.
Fig. 6 is the side structure diagram of elastic layer shown in Fig. 4.
Fig. 7 is the side structure schematic diagram that the present invention one changes first pressure sensing module in pressure-sensing module as shown in Figure 3 in embodiment.
Fig. 8 is the planar structure diagram of elastic layer shown in Fig. 7.
Fig. 9 is the side structure diagram of elastic layer shown in Fig. 7.
Main element symbol description
| Touch control display apparatus | 100 |
| Array base palte | 10 |
| Liquid crystal layer | 20 |
| Color membrane substrates | 30 |
| Viewing area | 101 |
| Signal lead | 102 |
| Fringe region | 103 |
| Pressure-sensing module | 110、210 |
| First pressure sensing module | 110a、210a |
| Second pressure sensing module | 110b |
| 3rd pressure sensing module | 110c |
| 4th pressure sensing module | 110d |
| Substrate | 105 |
| Elastic layer | 106、206 |
| First electrode layer | 111、211 |
| Piezoelectric material layer | 112、212 |
| The second electrode lay | 113、213 |
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
Referring to Fig. 1, wherein, Fig. 1 is the dimensional structure diagram of touch control display apparatus 100 in a better embodiment in the present invention.It should be noted that the touch control display apparatus 100 illustrates by taking liquid crystal display device as an example in present embodiment, in the present invention other change embodiments, touch control display apparatus 100 can also be other kinds of display device, such as organic electro-luminescent display（Organic
Light-Emitting Diode, OLED）Deng.
As shown in figure 1, touch control display apparatus 100 includes array base palte 10, liquid crystal layer 20 and color membrane substrates 30, liquid crystal layer 20 is located between array base palte 10 and color membrane substrates 30.Wherein, multiple driving element (not shown) are provided with array base palte 10, color membrane substrates 30 are provided with multiple optical elements, the driving element of array base palte 10 cooperates with the optical element of color membrane substrates 30 and controls the direction of rotation of liquid crystal molecule in liquid crystal layer 20, so as to reach the function that touch control display apparatus 100 carries out image and shown.Certainly, in the present invention changes embodiment, array base palte 10 can also set optical element, be not limited thereto.
Fig. 2-3 are referred to, wherein, Fig. 2 is the planar structure schematic diagram of array base palte 10 shown in Fig. 1, and Fig. 3 is the side structure schematic diagram of array base palte 10 shown in Fig. 1.
Array base palte 10 includes viewing area 101 and fringe region 103, wherein, viewing area 101 is located at the centre position of array base palte, sets the display element of multiple array arrangements（It is not shown）.Fringe region 103 is located at the peripheral position of array base palte 10, surround the viewing area 101, for the grade element of setting signal cabling 102, wherein, the signal lead 102 and the driving element of array base palte 10 are electrically conducted, and signal is shown for transmitting.In the present embodiment, the material of array base palte 10 can be glass or resin.Wherein, control circuit can be directly arranged on array base palte 10, can also be arranged at outside array base palte.
Fringe region 103 is additionally provided with a pressure-sensing module 110, in present embodiment, array base palte 10 is overall in rectangular configuration, corresponding edge region 103 is respectively provided to a few pressure sensing module adjacent to 4 corners of array base palte 10, and 4 pressure sensing modules are respectively designated as first pressure sensing module 110a, second pressure sensing module 110b, the 3rd pressure sensing module 110c and the 4th pressure sensing module 110d.4 pressure sensing modules are respectively by being arranged at the signal lead and control circuit of fringe region 103（It is not shown）Carry out signal interaction.With changing, the quantity of the pressure sensing module in the pressure-sensing module 110 that fringe region 103 is set can be adjusted according to actual demand, such as 3,5,6 etc..When array base palte 10 is bonded with color membrane substrates 30, pressure-sensing module 110 is directly connected to color membrane substrates 30.
First pressure sensing module 110a, second pressure sensing module 110b, the 3rd pressure sensing module 110c and the 4th pressure sensing module 110d are corresponding to bear electric signal corresponding to pressure transmission, and the coordinate position that touch control display apparatus 100 is touched is calculated according to 4 electric signals.
Referring to Fig. 4, wherein, Fig. 4 is the side structure schematic diagram that the corresponding pressure of array base palte 10 shown in Fig. 2-3 senses any one pressure sensing module in module 110.In the present embodiment, illustrated by taking first pressure sensing module 110a as an example, the fast structure of other pressure-sensing films is identical with first pressure sensing module 110a structures, and the present embodiment repeats no more.
Array base palte 10 includes substrate 105 and is arranged at the elastic layer 106 of substrate surface, and first pressure sensing module 110a is arranged at the surface of elastic layer 106.Elastic layer 106 has certain elasticity, and has nonplanar surface.
First pressure sensing module 110a includes first electrode layer 111, piezoelectric material layer 112 and the second electrode lay 113.Wherein, the first electrode layer 111, the piezoelectric material layer 112 coordinate the pressure that the pressure-sensing module is put on for sensing with the second electrode lay 113.
First electrode layer 111 is directly arranged at the surface of elastic layer 106, first electrode layer 111 is identical with the material of the second electrode lay 113, it is the material of conductive energy, such as conductive metal material, the plastic material containing conducting metal material or graphite etc., specifically, first electrode layer 111 and the material of the second electrode lay 113 can be silver（Ag）, argentiferous plastic material either graphite（Graphene).First electrode layer 111 and the generation type of the second electrode lay 113 can be that the material of foregoing conductive energy is formed and is covered on elastic layer 106 by modes such as evaporation, sputter, coatings.
The material of piezoelectric material layer 112 can be the material with piezoelectric property, such as Kynoar（Polyvinylidene Fluoride, PVDF）, it is preferred that the material of piezoelectric material layer 112 is polyvinylidene fluoride trifluoro-ethylene (PVDF-TrFE).The generation type of piezoelectric material layer 112 can be that the material of piezoelectric property is passed through into immersion plating（DIP）Or rotary coating（Spin Coating）In in first electrode layer 111.
Fig. 5-6 are referred to, it is respectively the planar structure schematic diagram and side structure schematic diagram of elastic layer 106 as shown in Figure 4.Elastic layer 106 includes multiple micro-structurals 1061, and the plurality of micro-structural 1061 forms the surface of bumps.
In present embodiment, micro-structural 1061 is the first distance L1 of interval and the semicolumn strip structure of periodic arrangement, change ground, micro-structural 1061 can also be semicircle, triangle, square or ellipsoidal structure, certainly, the distance of micro-structural can also be adjusted according to being actually needed, for example, the first distance L1 length can be zero.
Compared to prior art, elastic layer 106 is due to periodic arrangement micro-structural 1061, therefore the capacity area of first electrode layer 111 and the second electrode lay 113 is effectively increased, so when pressure-sensing module 110 is touched and pressed, the first electrode layer 111 and the area of the second electrode lay 113 deformed upon is larger, so as to obtain larger capacitance change and signal, pressure-sensing sensitivity and the precision of pressure-sensing module 110 are effectively increased.
Further, 110a is due to receiving external pressure for first pressure sensing module, so that the second electrode lay 113 is grounded piezoelectric signal corresponding to reference plane generation relative to the first electrode layer 111 for being arranged at substrate 105 as reference, because elastic layer 106 has periodically variable micro-structural 1061, so that piezoelectricity change is more obvious, so that piezoelectric signal change is more obvious, pressure-sensing precision is further increased.
Fig. 7-9 are referred to, wherein, Fig. 7 is the structural representation that the present invention one changes first pressure sensing module 210a in pressure-sensing module 210 in embodiment, and in the present embodiment, multiple micro-structurals 2061 that elastic layer 206 includes are arranged in arrays.First pressure sensing module 210a includes first electrode layer 211, piezoelectric material layer 212 and the second electrode lay 213.Wherein, the first electrode layer 211, the piezoelectric material layer 212 coordinate the pressure that the pressure-sensing module is put on for sensing with the second electrode lay 213.
Fig. 8-9 is respectively the planar structure schematic diagram and side structure schematic diagram of elastic layer 206 as shown in Figure 7.
In present embodiment, micro-structural 2061 is arranged in arrays, second distance L2 is spaced between two adjacent micro-structurals 2061, ground is changed, micro-structural 1061 can also be hemispherical or segment, triangular pyramid, hexagonal pyramid or elliposoidal structure, certainly, the distance of micro-structural can also be adjusted according to being actually needed, for example, second distance L2 length can be zero, i.e., the two of arbitrary neighborhood micro-structural 2061 mutually abuts.
Those skilled in the art will be appreciated that; embodiment above is intended merely to the explanation present invention; and it is not used as limitation of the invention; as long as within the spirit of the present invention, the appropriate change and change made to above example all fall within the scope of protection of present invention.
Claims (10)
1. a kind of pressure-sensing module, including：
One substrate；
One is arranged at the elastic layer in substrate, and the elastic layer includes multiple micro-structurals, and the plurality of micro-structural forms the surface of bumps；
One first electrode layer；
One piezoelectric material layer；And
One the second electrode lay, wherein, the first electrode layer, the piezoelectric material layer and the second electrode lay, which coordinate, forms pressure-sensing module, and the pressure-sensing module is arranged on the elastic layer, and the pressure of the pressure-sensing module is put on for sensing.
2. pressure-sensing module as claimed in claim 1, it is characterised in that the micro-structural is semicolumn strip structure, semicircle, triangle, square or the ellipsoidal structure of periodic arrangement.
3. pressure-sensing module as claimed in claim 1, it is characterised in that the material of the elastic layer is silicon rubber or elastomer.
4. pressure-sensing module as claimed in claim 1, it is characterised in that the piezoelectric is PVDF.
5. pressure-sensing module as claimed in claim 4, it is characterised in that the piezoelectric is TrFE-PVDF.
6. a kind of touch display substrate, including a viewing area and fringe region, the viewing area is used for display image, and the fringe region is arranged on the outside of the viewing area, for setting signal cabling, it is characterised in that in the fringe region, including：
One is arranged at the elastic layer in substrate, and the elastic layer includes multiple micro-structurals, and the plurality of micro-structural forms the surface of bumps；
One first electrode layer；
One piezoelectric material layer；And
One the second electrode lay, wherein, the first electrode layer, the piezoelectric material layer and the second electrode lay, which coordinate, forms pressure-sensing module, and the pressure-sensing module is arranged on the elastic layer, and the pressure of the pressure-sensing module is put on for sensing.
7. touch display substrate as claimed in claim 6, it is characterised in that the micro-structural is semicolumn strip structure, semicircle, triangle, square or the ellipsoidal structure of periodic arrangement.
8. touch display substrate as claimed in claim 6, it is characterised in that the material of the elastic layer is silicon rubber or elastomer.
9. touch display substrate as claimed in claim 6, it is characterised in that the piezoelectric is PVDF.
10. touch display substrate as claimed in claim 9, it is characterised in that the piezoelectric is TrFE-PVDF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610276062.4A CN107340897A (en) | 2016-04-29 | 2016-04-29 | Pressure-sensing module and touch display substrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610276062.4A CN107340897A (en) | 2016-04-29 | 2016-04-29 | Pressure-sensing module and touch display substrate |
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| Publication Number | Publication Date |
|---|---|
| CN107340897A true CN107340897A (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610276062.4A Pending CN107340897A (en) | 2016-04-29 | 2016-04-29 | Pressure-sensing module and touch display substrate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107463020A (en) * | 2017-08-30 | 2017-12-12 | 厦门天马微电子有限公司 | A kind of display base plate, display panel and display device |
| CN111857392A (en) * | 2019-04-26 | 2020-10-30 | 富泰华工业（深圳）有限公司 | Touch sensing module and electronic device using same |
| CN116243815A (en) * | 2023-05-10 | 2023-06-09 | 惠科股份有限公司 | Touch panel, display module, display device and touch detection method |
| WO2023115687A1 (en) * | 2021-12-24 | 2023-06-29 | 苏州大学 | Flexoelectric effect-based piezoelectric polymer film and preparation method therefor |
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| US20130206568A1 (en) * | 2012-02-14 | 2013-08-15 | Wintek Corporation | Touch panel |
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| CN104281328A (en) * | 2014-10-31 | 2015-01-14 | 合肥鑫晟光电科技有限公司 | Touch screen and display panel |
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| CN103210457A (en) * | 2010-09-10 | 2013-07-17 | 小利兰·斯坦福大学托管委员会 | Pressure sensing apparatuses and methods |
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| US20130206568A1 (en) * | 2012-02-14 | 2013-08-15 | Wintek Corporation | Touch panel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107463020A (en) * | 2017-08-30 | 2017-12-12 | 厦门天马微电子有限公司 | A kind of display base plate, display panel and display device |
| CN111857392A (en) * | 2019-04-26 | 2020-10-30 | 富泰华工业（深圳）有限公司 | Touch sensing module and electronic device using same |
| WO2023115687A1 (en) * | 2021-12-24 | 2023-06-29 | 苏州大学 | Flexoelectric effect-based piezoelectric polymer film and preparation method therefor |
| CN116243815A (en) * | 2023-05-10 | 2023-06-09 | 惠科股份有限公司 | Touch panel, display module, display device and touch detection method |
| CN116243815B (en) * | 2023-05-10 | 2023-08-08 | 惠科股份有限公司 | Touch panel, display module, display device and touch detection method |
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