CN105675183B - A kind of mechanics tablet - Google Patents
A kind of mechanics tablet Download PDFInfo
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- CN105675183B CN105675183B CN201511015838.9A CN201511015838A CN105675183B CN 105675183 B CN105675183 B CN 105675183B CN 201511015838 A CN201511015838 A CN 201511015838A CN 105675183 B CN105675183 B CN 105675183B
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- conductive film
- plate body
- sliding surface
- layer
- mechanics
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
Abstract
The present invention relates to a kind of mechanics tablets, the first conductive film, the second conductive film is respectively set on the first sliding surface of the first plate body, the second sliding surface of the second plate body, first conductive film, the second conductive film are patterned into corresponding multiple first strain resistors, the second strain resistor respectively, and there is disappearing for mobility to cut layer for setting between the first sliding surface, the second sliding surface.When by pressed by external force, opposite sliding occurs for the first sliding surface, the second sliding surface, first plate body, the second plate body respectively bend, first conductive film is stretched and its direct stress value is caused to become smaller, second conductive film is compressed and its direct stress value is caused to become larger, first strain resistor, the second strain resistor generate gem-pure differential signal, improve accuracy and the susceptibility of detection pressing force；Disappear and cut layer there is mobility, disappears and cut layer and can be arranged very thin, ensure that the consistency of its temperature, differential signal is enable more accurately to reflect pressing force of the finger on mechanics tablet.
Description
Technical field
The present invention relates to a kind of sensor more particularly to a kind of mechanics tablets.
Background technology
Mechanics tablet in the prior art generally comprises the first overlapped conductive film, the second conductive film, and first leads
Electrolemma, the second conductive film are patterned into overlapped its corresponding first strain resistor, second strain resistor respectively, and first
Strain resistor, the second strain resistor resistance value constitute dull letter with the direct stress value of the first conductive film, the second conductive film respectively
Number, as a result, when occurring being applied to the pressure on mechanics tablet, when such as pressing with finger the surface of mechanics tablet, mechanics
The bending of tablet can cause the first conductive film, the direct stress on the second conductive film to change, can be according to the first electrostrictive strain
It hinders, the variation of the resistance value of the second strain resistor, to be detected to the pressure, wherein due to the first conductive film, the second conduction
Film is overlapped, and the first conductive film, the second conductive film are on different faces, when mechanics tablet bends, the
One conductive film, the second conductive film stress there are difference, therefore, using the first strain resistor, present in the second strain resistor
Differential signal influenced caused by test result due to temperature change (assuming that the temperature between the first and second strain resistor to overcome
It is very small to spend difference) so that the measurement result of pressure is more accurate.
Figure 1A, Figure 1B are a kind of current structural schematic diagram of mechanics tablet, as shown in Figure 1A, the first conductive film 01, the
It is separated by substrate 03 between two conductive films 02, as shown in Figure 1B, when mechanics tablet bends, stress neutral surface 06 is such as
Shown in Figure 1B, the first conductive film 01, the second conductive film 02 divide to be rendered as compression stress and tensile stress, the first conductive film 01,
The direct stress of second conductive film 02 changes in the opposite direction, thus have apparent stress difference, however, due to the first conductive film 01,
Second conductive film 02 has been spaced apart larger distance so that and when the temperature is changed (when such as finger presses, temperature caused by body temperature
Variation), there are larger heat transfer time between the first strain resistor 04, the second strain resistor 05, there are larger for temperature
Difference so that the transient state of the result of measurement is not accurately high.
Fig. 2A, Fig. 2 B are the structural schematic diagram of another mechanics tablet at present, as shown in Figure 2 A, the first conductive film
011, the second conductive film 012 is separated by one layer very thin of insulating layer 013, therefore the first strain resistor 014, the second strain resistor
Temperature difference between 015 is very small, and as shown in Figure 2 B, when mechanics tablet bends, stress neutral surface 016 is in
The centre position of substrate 017, since the interplanar distance between the first conductive film 011, the second conductive film 012 is very small, first is conductive
What film 011, the second conductive film 012 generated is all not only tensile stress, and the first conductive film 011,012 stress of the second conductive film
Changing value it is very close, again such that measurement result is inaccurate.
Therefore, this mechanics sensor is needed to subtract to reduce the temperature difference of the first conductive film, the second conductive film
The interplanar distance of few first conductive film, the second conductive film, and in order to improve the stress difference between the first conductive film, the second conductive film,
It then needs to increase the interplanar distance between the first conductive film, the second conductive film, this contradictory presence so that it is difficult to obtain accurately
Measurement result.
Invention content
The technical problem to be solved in the present invention is to provide a kind of mechanics tablet, this mechanics tablet can overcome first
The contradiction of temperature difference, pressure difference between conductive film and the second conductive film, keeps the measurement of pressure more accurate.The technical side of use
Case is as follows：
A kind of mechanics tablet, it is characterized in that：It is conductive including the first plate body disposed in parallel, the second plate body and first
Film, the second conductive film and disappears and cut layer；The medial surface of first plate body is the first sliding surface, and the lateral surface of the second plate body is the second sliding
Face, the first conductive film, the second conductive film are separately positioned on the first sliding surface, on the second sliding surface, the first conductive film, second conductive
Film is patterned into corresponding multiple first strain resistors, the second strain resistor, the first strain resistor, the second electrostrictive strain respectively
The resistance value of resistance constitutes monotonic function with the direct stress value of the first conductive film, the second conductive film respectively；Disappear and cuts layer setting first
Between sliding surface, the second sliding surface, disappear and cut layer as the condensed state matter layer with mobility, disappearing, it is micro- for 3~50 to cut the thickness of layer
Rice.
It is above-mentioned it is outer refer to by the side of proximal operator, and it is interior, refer to the side far from operator, for example, for first
For plate body, the medial surface of the first plate body is far from operator.
Above-mentioned mechanics tablet may be provided at the display of electronic equipment lower section or display coversheet and display it
Between, it can be especially covered on display as the cover board of display, or even be combined together with display.
Above-mentioned first plate body, the second plate body can be glass, sapphire, diamond, SiO2Or similar poly terephthalic acid
The plate body that the transparent polymer of ethylene glycol fat (PET) or cycloolefine polymer (COP) is made.
Above-mentioned first conductive film, the second conductive film material can be transparent conductive material, such as poly- 3,4- enedioxies thiophene
Pheno (PEDOT), indium-tin-oxide (ITO), carbon nanotube, graphene, gallium zinc oxide, indium gallium zinc oxide, other doping
Or metal oxide, pressure drag semi-conducting material, piezoresistive metal material, nano silver wire, the Pt nanowires of undated (undated),
Nickel nano wire, other metal nanometer lines etc., or be nontransparent conductive material, as constantan, Karma (Karma) alloy, doping are more
Crystal silicon or non-crystalline silicon or monocrystalline silicon or other semi-conducting materials for conductive component.
Above-mentioned to disappear that cut layer be the condensed state matter layer for having mobility, specifically, disappearing, to cut layer can be liquid or quasi- liquid,
Such as various fluid oils, water, liquid glue, liquid organic solvent or liquid crystal, or can be flowed under the action of shearing force
Quasi- liquid, such as the higher grease of viscosity or glue, alternatively, for the mixed state of liquid and quasi- liquid, such as fluid oil and high viscosity
The mixture of glue.
Stretching/compressing stress inside the first conductive film of above-mentioned direct stress expression, the second conductive film, stress are that positive value indicates
There are compression stress, stress is that negative value indicates that there are tensile stresses.
Layer setting is cut between the first insulating layer, second insulating layer due to disappearing, and is disappeared and is cut layer as the condensed state with mobility
Material layer, which disappears, cuts layer, and when mechanics tablet is bent by pressed by external force, the first sliding surface, the second sliding surface occur relatively sliding
Dynamic, the shear transfer between the first sliding surface, the second sliding surface is thoroughly eliminated, and the first plate body, the second plate body respectively occur
Bending, specifically, stress neutral surface when the first plate body, the second plate bending are respectively at the first plate body, the second plate body
It is intermediate so that the first conductive film is stretched and its direct stress value is caused to become smaller, and the second conductive film is compressed and leads to its direct stress
Value becomes larger, so that the first strain resistor, the second strain resistor change in the opposite direction, the first strain resistor, the second strain
Resistance generates gem-pure differential signal, which thereby enhances accuracy and the susceptibility of detection pressing force；On the other hand, disappear and cut
Layer using with mobility condensed state matter layer, disappear cut layer can be arranged very thin (for example, will disappear cut layer thickness setting
It is 10 microns or less) so that the distance between the first sliding surface, second sliding surface can be arranged very small（It is energy
It is enough be arranged very close to）, it is thus possible to reduce the time that heat is transmitted between the first sliding surface, the second sliding surface so that finger
When pressing, corresponding first strain resistor, the temperature of the second strain resistor are almost the same, ensure that the consistency of its temperature,
Influence of the temperature change to its differential signal is avoided, its differential signal is enable more accurately to reflect that finger incudes in mechanics
Pressing force on plate.
Further include sensing circuit as the preferred embodiment of the present invention, first strain resistor, the second strain resistor and sense
Slowdown monitoring circuit is electrically connected, and sensing circuit is configured as measuring the differential variation of the first strain resistor, the second strain resistor, and being capable of root
The pressing force being subject on the outside of the first plate body is analyzed according to the differential variation of the first strain resistor, the second strain resistor.Specifically, feel
Slowdown monitoring circuit can be configured as the bridge circuit for measuring resistance differential variation between the first strain resistor, the second strain resistor, such as
Relationship known to fruit between the first strain resistor, the resistance value of the second strain resistor, temperature and stress, then can derive resistance
Relationship and province between differential variation and stress omit the influence of temperature, in this way, the differential variation can derive mechanics tablet
The pressing force that surface is subject to.
As the preferred embodiment of the present invention, described disappear cuts layer as layer liquid.To disappear and cut layer and be set as layer liquid, it is specific come
Say, disappear cut layer can be various fluid oils, water, liquid glue, liquid organic solvent or liquid crystal, in this way, disappear cut layer can be very
The shearing force between the first sliding surface, the second sliding surface is eliminated within the short time so that differential signal can be more accurately
Reflect the pressing force of finger.
As the further preferred embodiment of the present invention, described disappear cuts layer as liquid crystal layer.It will disappear and cut layer and be set as liquid crystal layer, when
When liquid crystal in liquid crystal layer is rendered as horizontally arranged, compared to general oils, liquid crystal layer has higher mobility.As a result,
It can further eliminate the shearing force between the first sliding surface, the second sliding surface within the very short time so that difference
Signal can more accurately reflect the pressing force of finger.
Further include the first both alignment layers, the second both alignment layers as further preferred embodiments of the present invention, the first both alignment layers,
Second both alignment layers are separately positioned on first sliding surface, on the second sliding surface, and the covering of the first both alignment layers is described each
First strain resistor, the second both alignment layers cover each second strain resistor.First both alignment layers, the second both alignment layers are to liquid crystal layer
In liquid crystal molecule have horizontal anchoring effect so that the liquid crystal molecule in liquid crystal layer is rendered as horizontally arranged.First orientation
Layer, the second both alignment layers can be the horizontal direction matching polyimide layer by rubbing, when liquid crystal molecule is in contact with it,
Be rendered as on the direction of rubbing it is horizontally arranged, it is possible thereby to which so that the liquid crystal molecule in liquid crystal layer is largely rendered as level
Arrangement so that liquid crystal molecule is in mobility bigger upwardly, it can further eliminate the within the very short time as a result,
Shearing force between one sliding surface, the second sliding surface so that differential signal can more accurately reflect the pressing force of finger.
Further include electrode mechanism as the further again preferred embodiment of the present invention, electrode mechanism is to be separately positioned on the
A pair of electrodes of one plate body medial surface and the second plate body lateral surface, alternatively, electrode mechanism is to be arranged in the first plate body medial surface
Or the second coplanar electrodes on plate body lateral surface, when electrode mechanism applies certain driving voltage, the liquid in the liquid crystal layer
Brilliant molecule is at least partially horizontally arranged.In the case where electrode mechanism is arranged, generally should also match in the first sliding surface and first
To the first insulating layer is arranged between layer, second insulating layer is set between the second sliding surface and the second both alignment layers so that electrode machine
It insulate between structure and each first strain resistor, the second strain resistor.No matter electrode mechanism is using which kind of design, when it applies one
When constant voltage, it so that the liquid crystal molecule in liquid crystal layer centainly horizontally arranged is occurred, thus liquid crystal molecule can be made in face
Upward mobility bigger can be eliminated further between the first sliding surface, the second sliding surface within the very short time
Shearing force so that differential signal can more accurately reflect the pressing force of finger.
As the preferred embodiment of the present invention, described disappear cuts layer and is additionally provided with spherical support object.Spherical support object can keep disappearing
The thickness of layer is cut, thus makes to be not easy short circuit between the first strain resistor, the second strain resistor, and sets supporter to ball
Shape plays the role of certain ball when allowing the first sliding surface, the second sliding surface that mutually sliding occurs, can not only be more
Keep zero shearing force between the first sliding surface, the second sliding surface well, additionally it is possible to reduce the first conductive film, the second conductive film
Abrasion.
As the preferred embodiment of the present invention, described disappear cuts layer and is in negative pressure state.It will disappear and cut layer and be set as negative pressure state,
That is so that the internal pressure for cutting layer that disappears of liquid is conducive to keep the first sliding surface, the second sliding surface less than atmospheric pressure
Be mutually adjacent to, and avoid it in the case of bending, the separation of generating surface and face.
As the preferred embodiment of the present invention, described disappear cuts 3~10 microns of the thickness of layer.The thickness for cutting layer that will disappear is set as small
In 10 microns, it can ensure that the heat transfer time between corresponding first strain resistor, the second strain resistor is sufficiently small, thus
It can guarantee the consistent of its temperature.
As the preferred embodiment of the present invention, first plate body, the thickness of the second plate body are identical.By the first plate body, second
The thickness of plate body is configured to identical so that the first strain resistor, the second strain resistor with stress variation change rate more closely,
Therefore, the order-of-magnitude agreement of respective resistance variations, the data processing of more convenient detection circuit.
Compared with prior art, the present invention having the following advantages that：
Layer setting is cut between the first insulating layer, second insulating layer due to disappearing, and is disappeared and is cut layer as the condensed state with mobility
Material layer, which disappears, cuts layer, and when mechanics tablet is bent by pressed by external force, the first sliding surface, the second sliding surface occur relatively sliding
Dynamic, the shear transfer between the first sliding surface, the second sliding surface is thoroughly eliminated, and the first plate body, the second plate body respectively occur
Bending so that the first conductive film is stretched and its direct stress value is caused to become smaller, and the second conductive film is compressed and leads to its direct stress
Value becomes larger, so that the first strain resistor, the second strain resistor change in the opposite direction, the first strain resistor, the second strain
Resistance generates gem-pure differential signal, which thereby enhances accuracy and the susceptibility of detection pressing force；On the other hand, disappear and cut
Layer disappears using the condensed state matter layer with mobility and cuts layer and can be arranged very thin, so that the first sliding surface, second
The distance between sliding surface can be arranged very small, it is thus possible to reduce heat transmission between the first sliding surface, the second sliding surface
Time so that finger press when, corresponding first strain resistor, the temperature of the second strain resistor are almost the same, ensure that
The consistency of its temperature avoids influence of the temperature change to its differential signal, its differential signal is enable more accurately to reflect
Go out pressing force of the finger on mechanics tablet.
Description of the drawings
Figure 1A, Figure 1B are a kind of structural schematic diagrams of mechanics tablet in the prior art；
Fig. 2A, Fig. 2 B are the structural schematic diagrams of another mechanics tablet in the prior art；
Fig. 3 is the structural schematic diagram of the preferred embodiment for the present invention；
Fig. 4 is sectional views of the Fig. 3 along A-A；
Fig. 5 be in Fig. 4 the first plate body by the schematic diagram of pressed by external force；
Fig. 6 is the structural schematic diagram of the first strain resistor, the second strain resistor.
Specific implementation mode
It is described further below in conjunction with the accompanying drawings with the preferred embodiment of the present invention.
As shown in Fig. 3, Fig. 4, Fig. 5, this mechanics tablet, including the first plate body 1 disposed in parallel, the second plate body 2, with
And first conductive film 3, the second conductive film 4, disappears and cut layer 5, spherical support object 6, the first both alignment layers 7, the second both alignment layers 8, sensing electricity
Road（It is not drawn into Fig. 3, Fig. 4, Fig. 5）With electrode mechanism 9；First plate body 1, the thickness of the second plate body 2 are identical；First plate body 1
Medial surface is the first sliding surface 10, and the lateral surface of the second plate body 2 is the second sliding surface 11, the first conductive film 3, the second conductive film 4
Be separately positioned on the first sliding surface 10, on the second sliding surface 11, as shown in fig. 6, the first conductive film 3, the second conductive film 4 respectively by
It is patterned into corresponding multiple first strain resistors 301, the second strain resistor 401, the strain of the first strain resistor 301, second
Resistance 401 is circuitous configuration, the first strain resistor 301, the second strain resistor 401 both ends be respectively equipped with drawing of extending outward
Outlet 302,402, the first strain resistor 301, the resistance value of the second strain resistor 401 are conductive with the first conductive film 3, second respectively
The direct stress value of film 4 constitutes monotonic function；First both alignment layers 7, the second both alignment layers 8 are separately positioned on the first sliding surface 10, second
On sliding surface 11, and the first both alignment layers 7 cover each first strain resistor 301, and the second both alignment layers 8 cover each second and answer
Become resistance 401；Disappear and cut layer 5 as liquid crystal layer 5 ', liquid crystal layer 5 ' is arranged between the first both alignment layers 7, the second both alignment layers 8（Due to
One both alignment layers 7, the second both alignment layers 8 are separately positioned on the first sliding surface 10, on the second sliding surface 11, therefore, liquid crystal layer 5 '
With regard to being arranged between the first sliding surface 10, the second sliding surface 11）, 5 microns of the thickness of liquid crystal layer 5 '（3~50 microns can）,
Liquid crystal layer 5 ' is in negative pressure state；Spherical support object 6 is arranged in liquid crystal layer 5 '；Electrode mechanism 9 is to be arranged outside the second plate body 2
Side（Or 1 medial surface of the first plate body）On coplanar electrodes, when electrode mechanism 9 applies certain driving voltage, liquid crystal layer 5 '
In liquid crystal molecule it is at least partially horizontally arranged, be additionally provided between the first sliding surface 10 and the first both alignment layers 7 first absolutely
Edge layer 12 is additionally provided with second insulating layer 13 between the second sliding surface 11 and the second both alignment layers 8 so that electrode mechanism 9 with it is each
It insulate between a first strain resistor 301, the second strain resistor 401；First strain resistor 301, second strain resistor 401 draw
Outlet 302,402 is electrically connected with sensing circuit respectively, and sensing circuit is configured as measuring the strain of the first strain resistor 301, second
The differential variation of resistance 401, and can be analyzed according to the differential variation of the first strain resistor 301, the second strain resistor 401
The pressing force that one plate body, 1 outside is subject to.
As shown in figure 5, due to being arranged between the first both alignment layers 7, the second both alignment layers 8 as the liquid crystal layer 5 ' for cutting layer 5 that disappears,
Liquid crystal layer 5 ' has mobility, when mechanics tablet is bent by pressed by external force, the first sliding surface 10, the second sliding surface 11 hair
Raw opposite sliding, the shear transfer between the first sliding surface 10, the second sliding surface 11 are thoroughly eliminated, the first plate body 1, second
Plate body 2 respectively bends, and specifically, the stress neutral surface 14,15 when the first plate body 1, the second plate body 2 are bent is respectively at
The centre of first plate body 1, the second plate body 2 so that the first conductive film 3 is stretched and its direct stress value is caused to become smaller, and second is conductive
Film 4 is compressed and its direct stress value is caused to become larger, so that the variation side of the first strain resistor 301, the second strain resistor 401
To on the contrary, the first strain resistor 301, the second strain resistor 401 generate gem-pure differential signal, which thereby enhance detection by
The accuracy of pressure and susceptibility；On the other hand, liquid crystal layer 5 ' is since with mobility, liquid crystal layer 5 ' can be arranged very thin
(for example, the thickness of liquid crystal layer 5 ' is set as 10 microns or less), so that between the first sliding surface 10, the second sliding surface 11
Distance can be arranged very small（Be can be arranged very close to）, it is thus possible to reduce by the first sliding surface 10, second
The time that heat is transmitted between sliding surface 11 so that when finger presses, corresponding first strain resistor 301, the second strain resistor
401 temperature is almost the same, ensure that the consistency of its temperature, avoids influence of the temperature change to its differential signal, makes it
Differential signal can more accurately reflect pressing force of the finger on mechanics tablet.
It is set as liquid crystal layer 5 ' in addition, will disappear and cut layer 5, when the liquid crystal in liquid crystal layer 5 ' is rendered as horizontally arranged, is compared
In general oils, liquid crystal layer 5 ' has higher mobility.It can further be eliminated within the very short time as a result,
Shearing force between first sliding surface 10, the second sliding surface 11 so that differential signal can more accurately reflect finger
Pressing force.Further the first both alignment layers 7 of setting, the second both alignment layers 8, when liquid crystal molecule is in contact with it, in rubbing
It is rendered as horizontally arranged on direction, it is possible thereby to so that the liquid crystal molecule in liquid crystal layer 5 ' is largely rendered as horizontally arranged, makes
Liquid crystal molecule is obtained in mobility bigger upwardly, it can further eliminate the first sliding within the very short time as a result,
Shearing force between face 10, the second sliding surface 11 so that differential signal can more accurately reflect the pressing force of finger.More
Further, electrode mechanism 9 is set, when electrode mechanism 9 applies certain voltage, can at least make the liquid crystal point in liquid crystal layer 5 '
There is centainly horizontally arranged in son, and liquid crystal molecule thus can be made in mobility bigger upwardly, can be further very short
Time within eliminate shearing force between the first sliding surface 10, the second sliding surface 11 so that differential signal can be more accurate
Ground reflects the pressing force of finger.
In addition, spherical support object can keep the thickness of liquid crystal layer 5 ', thus strain the first strain resistor 301, second
It is not easy short circuit between resistance 401, and sets supporter to spherical support object 6, the first sliding surface 10, second is allowed to slide
When face 11 occurs mutually to slide, play the role of certain ball, the first sliding surface 10, second cunning can not only be preferably kept
Zero shearing force between dynamic face 11, additionally it is possible to reduce the abrasion of the first conductive film 3, the second conductive film 4.
In addition, setting liquid crystal layer 5 ' to negative pressure state, that is to say, that so that the internal pressure of liquid crystal layer 5 ' is less than air
Pressure is conducive to that the first sliding surface 10, second sliding surface 11 is kept mutually to be adjacent to, and avoids it in the case of bending, sends out
The separation of dough and face.
In other embodiments, disappearing, to cut layer 5 can be other liquid or quasi- liquid, such as various fluid oils, water, liquid
Glue, liquid organic solvent, or the quasi- liquid that can be flowed under the action of shearing force, such as the higher grease of viscosity or
Glue, alternatively, for the mixed state of liquid and quasi- liquid, such as the mixture of fluid oil and high viscosity glue.
In other embodiments, electrode mechanism 9 is to be separately positioned on outside 1 medial surface of the first plate body and the second plate body 2
A pair of electrodes of side.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, each section title etc. can not
Together, the equivalent or simple change that all structure, feature and principles according to described in inventional idea of the present invention are done, is included in the present invention
In the protection domain of patent.Those skilled in the art can do described specific embodiment various each
The modify or supplement or adopt similar mode of sample substitutes, and without departing from structure of the invention or surmounts the claims
Defined range, is within the scope of protection of the invention.
Claims (10)
1. a kind of mechanics tablet, it is characterized in that：Including the first plate body disposed in parallel, the second plate body and the first conductive film,
Second conductive film and disappears and cut layer；The medial surface of first plate body is the first sliding surface, and the lateral surface of the second plate body is the second sliding surface,
First conductive film, the second conductive film are separately positioned on the first sliding surface, on the second sliding surface, the first conductive film, the second conductive film
It is patterned into corresponding multiple first strain resistors, the second strain resistor, the first strain resistor, the second strain resistor respectively
Resistance value respectively with the direct stress value of the first conductive film, the second conductive film constitute monotonic function；Disappear and cuts layer setting in the first cunning
Dynamic between face, the second sliding surface, disappearing, to cut layer be the condensed state matter layer with mobility, and disappearing, to cut the thickness of layer be 3~50 microns.
2. mechanics tablet as described in claim 1, it is characterized in that：Further include sensing circuit, first strain resistor,
Two strain resistors are electrically connected with sensing circuit, and sensing circuit is configured as measuring the difference of the first strain resistor, the second strain resistor
Divide variation, and can analyze what the first plate body outside was subject to according to the differential variation of the first strain resistor, the second strain resistor
Pressing force.
3. mechanics tablet as described in claim 1, it is characterized in that：Described disappear cuts layer as layer liquid.
4. mechanics tablet as claimed in claim 3, it is characterized in that：Described disappear cuts layer as liquid crystal layer.
5. mechanics tablet as claimed in claim 4, it is characterized in that：Further include the first both alignment layers, the second both alignment layers, first matches
It is separately positioned on first sliding surface, on the second sliding surface to layer, the second both alignment layers, and described in the covering of the first both alignment layers
Each first strain resistor, the second both alignment layers cover each second strain resistor.
6. mechanics tablet as claimed in claim 5, it is characterized in that：Further include electrode mechanism, electrode mechanism is to be respectively set
In a pair of electrodes of the first plate body medial surface and the second plate body lateral surface, alternatively, electrode mechanism is to be arranged in the first plate body
Coplanar electrodes on side or the second plate body lateral surface, when electrode mechanism applies certain driving voltage, in the liquid crystal layer
Liquid crystal molecule it is at least partially horizontally arranged.
7. mechanics tablet as described in claim 1, it is characterized in that：Described disappear cuts layer and is additionally provided with spherical support object.
8. mechanics tablet as described in claim 1, it is characterized in that：Described disappear cuts layer and is in negative pressure state.
9. mechanics tablet as described in claim 1, it is characterized in that：Described disappear cuts 3~10 microns of the thickness of layer.
10. mechanics tablet as described in claim 1, it is characterized in that：First plate body, the thickness of the second plate body are identical.
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| CN201511015838.9A CN105675183B (en) | 2015-12-31 | 2015-12-31 | A kind of mechanics tablet |
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| CN201511015838.9A CN105675183B (en) | 2015-12-31 | 2015-12-31 | A kind of mechanics tablet |
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| CN106201085A (en) * | 2016-07-12 | 2016-12-07 | 汕头超声显示器技术有限公司 | A kind of mechanics tablet of pinpoint accuracy |
| CN106197781B (en) * | 2016-08-23 | 2020-03-27 | 苏州理欧电子科技有限公司 | Film vector sensor and film deformation sensor |
| WO2018133054A1 (en) * | 2017-01-21 | 2018-07-26 | 深圳纽迪瑞科技开发有限公司 | Pressure-sensing structure, and electronic product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4311980A (en) * | 1978-10-12 | 1982-01-19 | Fabrica Italiana Magneti Marelli, S.P.A. | Device for pressure measurement using a resistor strain gauge |
| CN1034060A (en) * | 1987-12-16 | 1989-07-19 | 巴布科克和威尔科斯公司 | Dual sided pressure sensor |
| CN1435751A (en) * | 2002-01-31 | 2003-08-13 | 阿尔卑斯电气株式会社 | Induction plate and method for mfg. same |
| CN102047088A (en) * | 2008-05-29 | 2011-05-04 | 诺基亚公司 | A flexural deformation sensing device and a user interface using the same |
| US20110226069A1 (en) * | 2010-03-18 | 2011-09-22 | Korea Research Institute Of Standards And Science | Flexible force or pressure sensor array using semiconductor strain gauge, fabrication method thereof and measurement method thereof |
| CN105117070A (en) * | 2015-09-22 | 2015-12-02 | 汕头超声显示器技术有限公司 | Display assembly with pressure induction function |
-
2015
- 2015-12-31 CN CN201511015838.9A patent/CN105675183B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4311980A (en) * | 1978-10-12 | 1982-01-19 | Fabrica Italiana Magneti Marelli, S.P.A. | Device for pressure measurement using a resistor strain gauge |
| CN1034060A (en) * | 1987-12-16 | 1989-07-19 | 巴布科克和威尔科斯公司 | Dual sided pressure sensor |
| CN1435751A (en) * | 2002-01-31 | 2003-08-13 | 阿尔卑斯电气株式会社 | Induction plate and method for mfg. same |
| CN102047088A (en) * | 2008-05-29 | 2011-05-04 | 诺基亚公司 | A flexural deformation sensing device and a user interface using the same |
| US20110226069A1 (en) * | 2010-03-18 | 2011-09-22 | Korea Research Institute Of Standards And Science | Flexible force or pressure sensor array using semiconductor strain gauge, fabrication method thereof and measurement method thereof |
| CN105117070A (en) * | 2015-09-22 | 2015-12-02 | 汕头超声显示器技术有限公司 | Display assembly with pressure induction function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105675183A (en) | 2016-06-15 |
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