CN207557906U - Pressure sensitive module, touching display screen and touch-controlled electronic devices - Google Patents
Pressure sensitive module, touching display screen and touch-controlled electronic devices Download PDFInfo
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- CN207557906U CN207557906U CN201721733974.6U CN201721733974U CN207557906U CN 207557906 U CN207557906 U CN 207557906U CN 201721733974 U CN201721733974 U CN 201721733974U CN 207557906 U CN207557906 U CN 207557906U
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- pressure sensitive
- resistance
- sensitive module
- ground wire
- support plate
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Abstract
The utility model provides a kind of pressure sensitive module, touching display screen and touch-controlled electronic devices, wherein, pressure sensitive module includes：It can deformation support plate；At least one of Wheatstone bridge, Wheatstone bridge varistor be layed in the form of conductive foil line can deformation support plate positive side；Ground wire connects up, the interval region between wantonly two adjacent parallel conductive tinsel cords.By the technical solution of the utility model, by the way that ground wire is set to connect up, there is few signal interference, stable output signal and high sensitivity, reduce hazard rate, improve user experience.
Description
Technical field
The utility model is related to diaphragm pressures to sense field, in particular to a kind of pressure sensitive module, a kind of touch-control
Display screen and a kind of touch-controlled electronic devices.
Background technology
In the relevant technologies, resistive pressure inductive module is typically based on Wheatstone bridge principle and realizes pressure detecting, such as Fig. 1
In the topological structure of shown Wheatstone bridge, first resistor, second resistance, 3rd resistor and the 4th resistance form favour stone electricity
Four bridge arms of bridge, power supply E are powered to Wheatstone bridge, and potentiometer V is accessed between node A and node B.
As shown in Fig. 2, in the relevant technologies, first resistor 102 is only set on to the pressure sensitive area of touching display screen 200,
Horizontal length is L, the resistance value R1 of first resistor 102, the resistance value R2 of second resistance, the resistance value R3 of 3rd resistor and the 4th resistance
Resistance value R4 meets when not by external forcePotentiometer output voltage signal is zero at this time.
As shown in figure 3, generate downward pressure when the touching display screen 200 of 102 top of user's finger pressing first resistor
Power F, since the insulation cover plate of touching display screen 200 is bonded setting with first resistor 102, insulation cover plate drives the first electricity
Resistance 102 deforms upon, i.e., horizontal length is increased to L ', and thickness reduces, and resistance value R1 becomes larger, and then causesIt is electric at this time
The voltage signal of pressure meter output is not zero, and controller determines touch command according to the corresponding voltage signal of 102 deformation of first resistor,
But the sensitivity of above-mentioned pressure sensitive module is low, high failure rate.
Market is to further improve sensitivity, integrated and lightening etc. to the needs of pressure sensitive module, therefore, pressure-sensitive
The wiring congestion of the conductive tinsel cord of resistance, line width are even lower than 50 microns, open circuit or short circuit failure easily occur, and then cause whole
A pressure sensitive module failure.
Utility model content
The utility model is intended at least solve one of technical problem present in the prior art or the relevant technologies.
For this purpose, one of the utility model is designed to provide a kind of pressure sensitive module.
Another of the utility model is designed to provide a kind of touching display screen.
Another of the utility model is designed to provide a kind of touch-controlled electronic devices.
To achieve these goals, the embodiment of first aspect according to the present utility model provides a kind of pressure sensitive
Module, including：It can deformation support plate；At least one of Wheatstone bridge, Wheatstone bridge varistor is with conductive tinsel cord
Form be layed in it is described can deformation support plate positive side；Ground wire connects up, set on the wantonly two adjacent parallel conduction tinsel cords it
Between interval region.
In the technical scheme, by the way that ground wire wiring to be set to the spacer region between two adjacent conductive tinsel cords in office
Domain, i.e. ground wire are located at the void area of conductive tinsel cord namely conductive tinsel cord are isolated, to reduce the failure of Wheatstone bridge
Rate, the wiring for being conducive to pressure sensitive module is further integrated, so be conducive to adherence pressure inductive module sensitivity and
Reliability.
Wherein, varistor can be the resistor disc of conductive metallic material, it may also be said to have the ceramic electrical of piezoelectric property
Resistance.
Specifically, between by the way that ground wire is set on wantonly two adjacent parallel conductive tinsel cords, AC noise letter can be reduced
Number interference, in addition, when short trouble occurs for any conductive foil line, will not short circuit in adjacent conductive tinsel cord, but short circuit
In ground wire, also can by ground wire whether the adjacent conductive tinsel cord of output current signal auxiliary judgment whether short circuit, improve
Hardware debugging efficiency and malfunction elimination efficiency.
In any of the above-described technical solution, it is preferable that the wiring of at least one of Wheatstone bridge resistance is coiling setting
S-shaped conduction tinsel cord.
In the technical scheme, by the way that resistance wiring is set as S-shaped conduction tinsel cord, pressure-sensitive electricity can utmostly be improved
The length of arrangement wire of resistance, since varistor deforms upon mainly length variation, coil the varistor of the S-shaped of setting
Wiring can improve the voltage signal of output, and then improve detection sensitivity.
In any of the above-described technical solution, it is preferable that ground wire connects up a plurality of ground wire for including comb teeth shape, and each ground line is set on
One interval region, all ground wires of S-shaped conduction tinsel cord the same side are connected to same ground terminal.
In the technical scheme, between by the way that ground wire is set on wantonly two adjacent and parallel conductive tinsel cords, make ground wire phase
It is spaced apart completely between adjacent and parallel conductive tinsel cord, adjacent wires is avoided to generate short circuit, at this point, even if there is short circuit in circuit,
It is also signal wire and earth short, and can be come out by the signal detection that ground wire exports, i.e., property-line connects up, and improves signal
Stability and accuracy reduce signal interference, while whether detectable product is short-circuit in process of production, and it is qualified to improve product
Rate ensures product quality.
Further, in order to utmostly improve the length of arrangement wire of varistor, thus resistance wiring is set as S-shaped
Conductive tinsel cord by the way that ground wire wiring to be set as to a plurality of ground wire of comb teeth shape, optimizes ground wire setting between S-shaped conduction tinsel cord
Put mode.
In any of the above-described technical solution, it is preferable that the minimum spacing between any ground wire and adjacent S-shaped conduction tinsel cord
More than or equal to the first pre-determined distance value, the pre-determined distance value can be 10 μm, 20 μm or 50 μm.
In the technical scheme, by the way that the distance between ground wire and S-shaped conduction tinsel cord are set greater than or equal to first
Pre-determined distance value makes to form gap between ground wire and conductive tinsel cord, avoids contacting between ground wire and conducting wire as possible.
In any of the above-described technical solution, it is preferable that the minimum spacing between wantonly two adjacent and parallel conductive tinsel cords
More than or equal to the second pre-determined distance value, the pre-determined distance value can be 10 μm, 20 μm or 50 μm.
In the technical scheme, by the way that the minimum spacing between wantonly two adjacent and parallel conductive tinsel cords is set as big
In or equal to the second default spacing, to avoid short circuit between wantonly two conductive tinsel cords as possible, and then be conducive to avoid pressure sensitive
Module causes signal detection wrong due to short circuit, so as to promote user experience.
Wherein, the end of first resistor, second resistance, 3rd resistor and the 4th resistance is both provided with pin, to export
Voltage signal, so that it is determined that position of touch.
In any of the above-described technical solution, it is preferable that the Wheatstone bridge includes the first electricity for being respectively provided with pressure-sensitive character
Resistance, second resistance, 3rd resistor and the 4th resistance, the first resistor and the second resistance are connected in series to form the first series connection
Circuit, the 3rd resistor and the 4th resistance are connected in series to form the second series loop, first series loop and institute
It states and is connected in parallel between the second series loop, the Wheatstone bridge meets correspondence and includes：
Wherein, R1 is the resistance value of first resistor, and R2 is the resistance value of second resistance, and R3 is the resistance value of 3rd resistor, R4 the
The resistance value of four resistance.
In the technical scheme, it is defined by the resistance value to varistor, ensures first resistor, second resistance, the
It is connected between three resistance and the 4th resistance for Wheatstone bridge, there is no during pressure signal, the output voltage of Wheatstone bridge
Signal is zero, simplifies the complexity of processing pressure signal.
In any of the above-described technical solution, it is preferable that can deformation support plate carried for ester plastic support plate or cycloolefin plastics
Plate or glass support plate.
In the technical scheme, ester plastic support plate or cycloolefin plastics support plate or glass support plate belong to non-conductive
Optical plastic, by can deformation support plate be set as ester plastic support plate or cycloolefin plastics support plate or glass support plate, can carry
Height can deformation support plate folding resistance, heat-resisting quantity and transparency etc., and then the structure for being conducive to adherence pressure inductive module is reliable
Property.
The technical solution of second aspect according to the present utility model provides a kind of touching display screen, including：It is deformable
Insulation cover plate, the positive side of insulation cover plate are used to detect the touch control operation of user；Further include pressure sensitive module, pressure sensitive mould
Group fitting is set on the dorsal surface of insulation cover plate, and pressure sensitive module determines corresponding touch command according to touch control operation.
In the technical scheme, it is above-mentioned by the dorsal surface fitting setting in insulation cover plate (Cover Glass, abbreviation CG)
Pressure sensitive module (Touch Sensor), improves the accuracy that touching display screen detects touch command, and does not improve
The hardware cost of touching display screen is conducive to batch production and marketing.
Technical solution in terms of third according to the present utility model, provides a kind of touch-controlled electronic devices, including:This reality
With the touching display screen in the technical solution of novel the second aspect, touch-controlled electronic devices are mobile phone, tablet computer, notebook,
One kind in display, television set and wearable smart machine.
The additional aspect and advantage of the utility model will provide in following description section, partly will be from following description
In become apparent or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become apparent and be readily appreciated that, wherein：
Fig. 1 shows the circuit diagram of Wheatstone bridge；
Fig. 2 shows schematic diagram of the pressure sensitive module in non-stress；
Fig. 3 shows schematic diagram of pressure sensitive module when by pressure；
Fig. 4 shows the structural representation of the positive side of the pressure sensitive module of one embodiment according to the present utility model
Figure；
Fig. 5 shows the close-up schematic view in the pressure sensitive module D areas of one embodiment according to the present utility model；
Fig. 6 show the AA ' in the pressure sensitive module D areas of one embodiment according to the present utility model to section illustrate
Figure；
Fig. 7 shows the close-up schematic view in the pressure sensitive module C areas of one embodiment according to the present utility model.
Wherein, the correspondence in Fig. 1 to Fig. 7 between reference numeral and component is：
100 can deformation support plate, 102 varistors, 106 ground wires, 108A wire pin, 108B resistance pins, 200 touch-controls show
Display screen.
Specific embodiment
In order to be more clearly understood that the above-mentioned purpose of the utility model, feature and advantage, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
Novel to be implemented using other different from other modes described here, therefore, the scope of protection of the utility model is simultaneously
It is not limited by following public specific embodiment.
Embodiment 1
The pressure sensitive module tool of embodiment according to the present utility model is specifically described with reference to Fig. 4 to Fig. 7.
As shown in Figures 4 to 7, the pressure sensitive module of embodiment according to the present utility model, including：It can deformation support plate
100；At least one of Wheatstone bridge, Wheatstone bridge varistor 102 is layed in described in the form of conductive foil line
Can deformation support plate 100 positive side；106 wiring layer of ground wire, between the wantonly two adjacent parallel conductive tinsel cords between
Septal area domain.
In the technical scheme, between by the way that 106 wiring layer of ground wire is set between two adjacent conductive tinsel cords in office
Septal area domain, i.e. ground wire 106 are located at the void area of conductive tinsel cord namely conductive tinsel cord are isolated, to reduce favour stone electricity
The failure rate of bridge, the wiring for being conducive to pressure sensitive module is further integrated, and then is conducive to adherence pressure inductive module
Sensitivity and reliability.
Wherein, varistor 102 can be the resistor disc of conductive metallic material, it may also be said to have the ceramics of piezoelectric property
Resistance.
Specifically, between by the way that ground wire 106 is set on wantonly two adjacent parallel conductive tinsel cords, AC noise can be reduced
The interference of signal, in addition, when short trouble occurs for any conductive foil line, will not short circuit in adjacent conductive tinsel cord, it is but short
Ground wire 106 is connected to, also can whether the adjacent conductive tinsel cord of output current signal auxiliary judgment be short by ground wire 106
It connects, improves hardware debugging efficiency and malfunction elimination efficiency.
As shown in figure 4, in any of the above-described technical solution, it is preferable that at least one of Wheatstone bridge resistance connects up
S-shaped conduction tinsel cord for coiling setting.
In the technical scheme, by the way that resistance wiring is set as S-shaped conduction tinsel cord, pressure-sensitive electricity can utmostly be improved
The length of arrangement wire of resistance 102, since varistor 102 deforms upon mainly length variation, coil the pressure of the S-shaped of setting
Quick resistance 102 connects up the voltage signal that can improve output, and then improves detection sensitivity.
As shown in figure 5, in any of the above-described technical solution, it is preferable that 106 wiring layer of ground wire include comb teeth shape a plurality ofly
Line 106, each ground line 106 are set on an interval region, and all ground wires 106 of S-shaped conduction tinsel cord the same side are connected to same connect
Ground terminal.
In the technical scheme, between by the way that ground wire 106 is set on wantonly two adjacent and parallel conductive tinsel cords, such as Fig. 6
It is shown, make ground wire 106 adjacent and be spaced apart completely between parallel conductive tinsel cord, adjacent wires is avoided to generate short circuit, at this point, i.e.
Make have short circuit and signal wire and 106 short circuit of ground wire in circuit, and can be come out by the signal detection that ground wire 106 exports, that is, use
106 wiring layer of ground wire improves the stability and accuracy of signal, reduces signal interference, while can examine in process of production
It whether short-circuit surveys product, improves product qualification rate, ensure product quality.
Further, in order to utmostly improve the length of arrangement wire of varistor 102, thus resistance wiring is set as
S-shaped conduction tinsel cord by the way that 106 wiring layer of ground wire to be set as to a plurality of ground wire 106 of comb teeth shape, optimizes ground wire 106 and is led in S-shaped
Set-up mode between electric tinsel cord.
In any of the above-described technical solution, it is preferable that the minimum between any ground wire 106 and adjacent S-shaped conduction tinsel cord
Spacing is greater than or equal to the first pre-determined distance value.
In the technical scheme, by the way that the distance between ground wire 106 and S-shaped conduction tinsel cord are set greater than or equal to
One pre-determined distance value makes to form gap between ground wire 106 and conductive tinsel cord, avoids contacting between ground wire 106 and conducting wire as possible.
Wherein, the first pre-determined distance value can be 10 μm, 20 μm or 50 μm.
In any of the above-described technical solution, it is preferable that the minimum spacing between wantonly two adjacent and parallel conductive tinsel cords
More than or equal to the second pre-determined distance value.
In the technical scheme, by the way that the minimum spacing between wantonly two adjacent and parallel conductive tinsel cords is set as big
In or equal to the second default spacing, to avoid short circuit between wantonly two conductive tinsel cords as possible, and then be conducive to avoid pressure sensitive
Module causes signal detection wrong due to short circuit, so as to promote user experience.
Wherein, the end of first resistor, second resistance, 3rd resistor and the 4th resistance is both provided with pin, to export
Voltage signal, so that it is determined that position of touch.
In addition, the second pre-determined distance value can be 10 μm, 20 μm or 50 μm.
As shown in fig. 7, ground wire pin 108A is connected to ground wire wiring, it is used to implement ground connection, and base area wire pin
108A output current signals can determine short-circuited region, and varistor pin 108B is connected to varistor wiring layer, for defeated
Go out the corresponding voltage signals of pressure signal F.
In any of the above-described technical solution, it is preferable that the Wheatstone bridge includes the first electricity for being respectively provided with pressure-sensitive character
Resistance, second resistance, 3rd resistor and the 4th resistance, the first resistor and the second resistance are connected in series to form the first series connection
Circuit, the 3rd resistor and the 4th resistance are connected in series to form the second series loop, first series loop and institute
It states and is connected in parallel between the second series loop, the Wheatstone bridge meets correspondence and includes：
Wherein, R1 is the resistance value of first resistor, and R2 is the resistance value of second resistance, and R3 is the resistance value of 3rd resistor, R4 the
The resistance value of four resistance.
In the technical scheme, be defined by the resistance value to varistor 102, ensure first resistor, second resistance,
It is connected between 3rd resistor and the 4th resistance for Wheatstone bridge, there is no during pressure signal, the output of Wheatstone bridge is electric
It is zero to press signal, simplifies the complexity of processing pressure signal.
In any of the above-described technical solution, it is preferable that can deformation support plate 100 be ester plastic support plate or cycloolefin plastics
Support plate or glass support plate.
In the technical scheme, ester plastic support plate or cycloolefin plastics support plate or glass support plate belong to non-conductive
Optical plastic, by can deformation support plate 100 be set as ester plastic support plate or cycloolefin plastics support plate or glass support plate, can
Improve can deformation support plate 100 folding resistance, heat-resisting quantity and transparency etc., and then be conducive to the structure of adherence pressure inductive module
Reliability.
Embodiment according to the present utility model provides a kind of touching display screen 200, including：Deformable insulation cover plate,
The positive side of insulation cover plate is used to detect the touch control operation of user；Pressure sensitive module is further included, the fitting of pressure sensitive module is set
In the dorsal surface of insulation cover plate, pressure sensitive module determines corresponding touch command according to touch control operation.
In the technical scheme, it is above-mentioned by the dorsal surface fitting setting in insulation cover plate (Cover Glass, abbreviation CG)
Pressure sensitive module (Touch Sensor), improves the accuracy that touching display screen 200 detects touch command, and does not carry
The hardware cost of high touching display screen 200 is conducive to batch production and marketing.
Embodiment according to the present utility model provides a kind of touch-controlled electronic devices, including:Second side of the utility model
Touching display screen 200 in the technical solution in face, touch-controlled electronic devices are mobile phone, tablet computer, notebook, display, TV
One kind in machine and wearable smart machine.
The technical solution of the utility model is described in detail above in association with attached drawing, the utility model proposes a kind of feelings of stress
Answer module and touching display screen and touch control display device, by by ground wire be set on wantonly two it is adjacent parallel conductive tinsel cords it
Between, the interference of AC noise signal can be reduced, in addition, any conductive foil line occur short trouble when, will not short circuit in phase
Adjacent conductive tinsel cord, but short circuit is in ground wire, also can whether output current signal auxiliary judgment be adjacent leads by ground wire
Electric tinsel cord whether short circuit, improve hardware debugging efficiency and malfunction elimination efficiency.
On the other hand, the utility model can be used for qualitatively judging product short-circuit conditions, can both pass through in process of production
Detecting product, whether short circuit promotes production qualification rate, and can be when quality problems occurs in product, the quick short-circuit position of detection
It puts, is lost caused by product failure so as to reduce client.
It these are only the preferred embodiment of the utility model, be not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of pressure sensitive module, which is characterized in that
It can deformation support plate；
At least one of Wheatstone bridge, Wheatstone bridge varistor be layed in the form of conductive foil line it is described can shape
Become the positive side of support plate；
Ground wire connects up, the interval region between the wantonly two adjacent parallel conductive tinsel cords.
2. pressure sensitive module according to claim 1, which is characterized in that
The conduction tinsel cord is the S of coiling setting.
3. pressure sensitive module according to claim 2, which is characterized in that
The ground wire wiring includes a plurality of ground wire of comb teeth shape, and the every ground wire is set on an interval region, the S-shaped
All ground wires of conductive tinsel cord the same side are connected to same ground terminal.
4. pressure sensitive module according to claim 3, which is characterized in that
Minimum spacing between any ground wire and the adjacent S-shaped conduction tinsel cord is greater than or equal to the first pre-determined distance
Value, the pre-determined distance value can be 10 μm, 20 μm or 50 μm.
5. pressure sensitive module according to claim 1, which is characterized in that
Minimum spacing between the wantonly two adjacent and parallel conductive tinsel cords is greater than or equal to the second pre-determined distance value, described
Pre-determined distance value can be 10 μm, 20 μm or 50 μm.
6. pressure sensitive module according to claim 1, which is characterized in that
The Wheatstone bridge includes the first resistor, second resistance, 3rd resistor and the 4th resistance that are respectively provided with pressure-sensitive character, institute
It states first resistor and the second resistance is connected in series to form the first series loop, the 3rd resistor and the 4th resistance string
Connection connection forms the second series loop, is connected in parallel between first series loop and second series loop, the favour
Stone electric bridge meets correspondence and includes：
Wherein, the R1 is the resistance value of the first resistor, and the R2 is the resistance value of the second resistance, and the R3 is described the
The resistance value of three resistance, the R4 are the resistance value of the 4th resistance.
7. pressure sensitive module according to any one of claim 1 to 6, which is characterized in that
It is described can deformation support plate be ester plastic support plate or cycloolefin plastics support plate or glass support plate.
8. a kind of touching display screen, which is characterized in that including：
Deformable insulation cover plate, the positive side of the insulation cover plate are used to detect the touch control operation of user；
Pressure sensitive module as described in any one of claim 1 to 7, the pressure sensitive module fitting are set on the insulation
The dorsal surface of cover board, the pressure sensitive module determine corresponding touch command according to the touch control operation.
9. a kind of touch-controlled electronic devices, which is characterized in that including：
Touching display screen as claimed in claim 8.
10. touch-controlled electronic devices according to claim 9, which is characterized in that
The touch-controlled electronic devices are one kind in mobile phone, tablet computer, notebook, display and television set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733974.6U CN207557906U (en) | 2017-12-13 | 2017-12-13 | Pressure sensitive module, touching display screen and touch-controlled electronic devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733974.6U CN207557906U (en) | 2017-12-13 | 2017-12-13 | Pressure sensitive module, touching display screen and touch-controlled electronic devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207557906U true CN207557906U (en) | 2018-06-29 |
Family
ID=62663966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721733974.6U Active CN207557906U (en) | 2017-12-13 | 2017-12-13 | Pressure sensitive module, touching display screen and touch-controlled electronic devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207557906U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109714813A (en) * | 2019-01-08 | 2019-05-03 | 京东方科技集团股份有限公司 | Electronic equipment |
| WO2020118837A1 (en) * | 2018-12-12 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Touch control panel and electronic device |
-
2017
- 2017-12-13 CN CN201721733974.6U patent/CN207557906U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020118837A1 (en) * | 2018-12-12 | 2020-06-18 | 武汉华星光电半导体显示技术有限公司 | Touch control panel and electronic device |
| CN109714813A (en) * | 2019-01-08 | 2019-05-03 | 京东方科技集团股份有限公司 | Electronic equipment |
| WO2020143465A1 (en) * | 2019-01-08 | 2020-07-16 | 京东方科技集团股份有限公司 | Electronic device |
| US11240757B2 (en) | 2019-01-08 | 2022-02-01 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Electronic device |
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