CN109696980A - Pressure sensitive sensor, touch display screen component and electronic device - Google Patents
Pressure sensitive sensor, touch display screen component and electronic device Download PDFInfo
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- CN109696980A CN109696980A CN201710985321.5A CN201710985321A CN109696980A CN 109696980 A CN109696980 A CN 109696980A CN 201710985321 A CN201710985321 A CN 201710985321A CN 109696980 A CN109696980 A CN 109696980A
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- strain
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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
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- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of pressure sensitive sensors, are used for touch display screen component.Pressure sensitive sensor includes substrate, the first conductive layer and the second conductive layer.First conductive layer includes the first strain sensor group being connected in series by the first strain inductor and the second strain inductor.Second conductive layer includes the second strain sensor group for straining inductor and the 4th strain inductor by third and being connected in series.First strain inductor, the second strain inductor, third strain inductor and the 4th strain inductor connect and compose Wheatstone bridge formula pressure sensitive unit.In addition, touch display screen component and electronic device include pressure sensitive sensor the invention also discloses a kind of touch display screen component and electronic device.The pressure sensitive sensor of embodiment of the present invention can detecte the pressure change in touch display screen X/Y plane.When touch display screen is under pressure, touch display screen will not directly be squeezed, to avoid influencing the display of touch display screen.
Description
Technical field
The present invention relates to pressure sensitive field, in particular to a kind of pressure sensitive sensor, touch display screen component and electricity
Sub-device.
Background technique
In the related art, it touches the pressure sensitive scheme majority of display field and pressure is detected with the deformation of Z-direction,
But this deformation with Z-direction can directly squeeze touch display screen to detect pressure, applying for a long time may
Touch display screen is influenced to show.
Summary of the invention
Embodiments of the present invention provide a kind of pressure sensitive sensor, touch display screen component and electronic device.
The pressure sensitive sensor of embodiment of the present invention is used for touch display screen component, the pressure sensitive sensor
Include:
Substrate, the substrate include upper and lower surfaces, the substrate offer through the upper surface and it is described under
First conductive hole and the second conductive hole on surface and interval；
First conductive layer, in the upper surface, first conductive layer includes the first strain for the first conductive layer setting
Sensor group, the first strain sensor group include concatenated first strain inductor and the second strain inductor, and described the
One strain inductor and the second strain inductor are connected the first node to be formed positioned at the upper surface；With
Second conductive layer, in the lower surface, second conductive layer includes the second strain for the second conductive layer setting
Sensor group, the second strain sensor group include concatenated third strain inductor and the 4th strain inductor, and described the
Three strain inductors and the 4th strain inductor are connected the second node to be formed positioned at the lower surface；
The first strain inductor, the second strain inductor, third strain inductor and the described 4th are answered
The sensitive grid bearing for becoming inductor is perpendicular to one another, and the first strain inductor and the 4th strain inductor pass through described the
One conductive hole connects and forms third node, and the second strain inductor and third strain inductor pass through described second
Conductive hole connects and forms fourth node, the first strain inductor, the second strain inductor, third strain sense
Device and the 4th strain inductor is answered to connect and compose Wheatstone bridge formula pressure sensitive unit.
The pressure sensitive sensor of embodiment of the present invention strains the Wheatstone bridge formula pressure that inductor is constituted by four
Sensing unit can be applied to the pressure detecting of deformation in X/Y plane.By pressure sensitive sensor application in touch display screen group
When part, the pressure change in touch display screen X/Y plane is detected.It, will not be to touch display screen when touch display screen is under pressure
It directly squeezes, to avoid influencing the display of touch display screen.
In some embodiments, the first strain inductor, the second strain inductor, third strain sense
Answering the Standard resistance range of device and the 4th strain inductor is 120 ohm to 50M ohm.
In this way, the Standard resistance range variation of strain inductor is greatly, preferably Standard resistance range can be selected according to demand.
In some embodiments, the first strain inductor, the second strain inductor, third strain sense
Answer at least one of device and the 4th strain inductor in detour bending structure.
In this way, guaranteeing that strain inductor had not only had certain resistance value, but also will not seem too long.
In some embodiments, the first strain inductor and the 4th strain inductor are spatially overlapped,
The second strain inductor and third strain inductor are spatially overlapped.
In this way, the upper surface of substrate is arranged in the first strain sensor group, substrate is arranged in the second strain sensor group
Lower surface, two strain sensor groups are spatially overlapped, and reduce space hold.
In some embodiments, first node orthographic projection on the substrate and the second node are described
Orthographic projection on substrate is at least partly overlapped.
In this way, first node and second node are spatially at least partly overlapped, the space utilization rate of substrate is improved.
In some embodiments, the quantity of the pressure sensitive unit is multiple, and the multiple pressure sensitive unit exists
It is arranged on the substrate in array.
In this way, multiple pressure sensitive units are used to detect the pressure size for acting on touch display screen, it can be according to reality
The number of demand setting pressure sensitive unit.
In some embodiments, the size of the pressure sensitive unit is 20mm2To 25cm2。
In this way, the size of pressure sensitive unit is 20mm2To 25cm2, it is suitable size can be made according to demand
Pressure sensitive unit.
In some embodiments, the pressure sensitive sensor include connect the first node, the second node,
The lead of the third node and the fourth node, the lead is from the first node, the second node, the third
Node and the fourth node extend to another side of the substrate through a side of the substrate, described a side with it is described
Another side is the sides adjacent of the substrate.
In this way, lead connects four nodes and flexible circuit board constructs Wheatstone bridge detection circuit.Lead is arranged in base
Material side can reduce influence of the touch display screen screen deformation to lead resistance value, cause pressure greatly to avoid lead change in resistance
Detection inaccuracy.
In some embodiments, the lead is separately positioned on the upper surface and the lower surface.
In this way, lead connects four nodes and flexible circuit board constructs Wheatstone bridge detection circuit.Work as touch display screen
When being under pressure, the resistance variations of Wheatstone bridge detection circuit detection strain inductor are to detect pressure change.
The touch display screen component of embodiment of the present invention, comprising:
Pressure sensitive sensor described in any of the above-described embodiment；With
Touch display screen, the touch display screen are stacked with the pressure sensitive sensor.
In the touch display screen component of embodiment of the present invention, it is flat that pressure sensitive sensor can detecte touch display screen XY
Pressure change in face.When touch display screen is under pressure, touch display screen will not directly be squeezed, to avoid influencing to touch
Touch the display of display screen.
The electronic device of embodiment of the present invention, including touch display screen component described in shell and above embodiment,
The touch display screen component is arranged in the shell.
In the electronic device of embodiment of the present invention, touch display screen component includes pressure sensitive sensor and touch display
Screen.Pressure sensitive sensor can detecte the pressure change in touch display screen X/Y plane.When touch display screen is under pressure,
Touch display screen will not directly be squeezed, to avoid influencing the display of touch display screen.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the pressure sensitive sensor of embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the pressure sensitive sensor of another embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the substrate of embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the first strain sensor group of embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the second strain sensor group of embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the Wheatstone bridge formula strain sensing unit of embodiment of the present invention；
Fig. 7 is the simplified structure diagram of the Wheatstone bridge formula strain sensing unit of embodiment of the present invention；
Fig. 8 is the connection schematic diagram of the first strain sensor group and the second strain sensor group of embodiment of the present invention；
Fig. 9 is the structural schematic diagram of the touch display screen component of embodiment of the present invention.
Main element symbol description:
Pressure sensitive sensor 10, substrate 12, upper surface 14, lower surface 16, the first conductive hole 18, conductive materials 19,
Two conductive holes 20, the first conductive layer 22, first strain sensor group 24, first strain inductor 26, second strain inductor 28,
First node 30, the second conductive layer 32, second strain sensor group 34, third strain inductor the 36, the 4th strains inductor 38,
Second node 40, fourth node 44, pressure sensitive unit 46, lead 48, touch display screen component 100, touches third node 42
Display screen 20.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
Needle ", instruction " counterclockwise " orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of retouching
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for retouching
Purpose is stated, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.By
This defines " first ", the feature of " second " can explicitly or implicitly include one or more feature.At this
In the description of invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be by between intermediary
It connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Fig. 1-Fig. 9 is please referred to, the pressure sensitive sensor 10 of embodiment of the present invention is used for touch display screen component 100.
Pressure sensitive sensor 10 includes substrate 12, the first conductive layer 22 and the second conductive layer 32.
Substrate 12 includes upper surface 14 and lower surface 16.Substrate 12 is offered through upper surface 14 and lower surface 16 and is spaced
The first conductive hole 18 and the second conductive hole 20.
First conductive layer 22 is arranged in upper surface 14.First conductive layer 22 includes the first strain sensor group 24.First answers
Becoming sensor group 24 includes concatenated first strain inductor 26 and the second strain inductor 28.First strain inductor 26 and the
The two strain series connection of inductor 28 form the first node 30 for being located at upper surface 14.
Second conductive layer 32 is arranged in lower surface 16.Second conductive layer 32 includes the second strain sensor group 34.Second answers
Becoming sensor group 34 includes concatenated third strain inductor 36 and the 4th strain inductor 38.Third strains inductor 36 and the
The four strain series connection of inductor 38 form the second node 40 for being located at lower surface 16.
First strain inductor 26, second strains inductor 28, third strain inductor 36 and the 4th strain inductor 38
Sensitive grid bearing it is perpendicular to one another.First strain inductor 26 is connected simultaneously with the 4th strain inductor 38 by the first conductive hole 18
Form third node 42.Second strain inductor 28 and third strain inductor 36 passes through the second conductive hole 20 and connects and form the
Four nodes 44.First strain inductor 26, second strains inductor 28, third strain inductor 36 and the 4th strain inductor 38
Connect and compose Wheatstone bridge formula pressure sensitive unit 46.
The pressure sensitive sensor 10 of embodiment of the present invention strains the Wheatstone bridge formula pressure that inductor is constituted by four
Power sensing unit 46 can be applied to the pressure detecting of deformation in X/Y plane.Pressure sensitive sensor 10 is applied to touch aobvious
When display screen component 100, the pressure change in touch display screen 20XY plane is detected.When touch display screen 20 is under pressure, no
Touch display screen 20 can directly be squeezed, to avoid influencing the display of touch display screen 20.
Pressure is detected with the deformation of Z-direction it is appreciated that touching the pressure sensitive scheme majority of display field, usually
It needs to be equipped with support member in the lower section of touch display screen, pressure sensitive sensor is between screen and support member.Work as hand
When referring to pressing screen, the pressure of squeeze pressure inductive pick-up is screen and the pressure that support member is subject between the two, reality
On be that screen sides are squeezed.Therefore touch display screen can directly be squeezed with the deformation of Z-direction to detect pressure,
Application may will affect the display of touch display screen for a long time.And the pressure sensitive sensor 10 of embodiment of the present invention is flat with XY
Deformation in face detects pressure, can it is not necessary that support member is arranged in the lower section of touch display screen 20.When finger presses screen,
Screen only has side to be squeezed, and the other side will not be squeezed.Accordingly it is possible to prevent screen is extruded damage and influences to touch
The display of display screen 20.
Referring again to Fig. 1 and Fig. 2, the first strain sensor group 24 is identical with the quantity of the second strain sensor group 34 and is
Multiple, in other words the first conductive layer 22 includes multiple first strain sensor groups 24, and the second conductive layer 32 includes multiple second
Strain sensor group 34.Multiple first strain sensor groups 24 and the second strain sensor group 34 may be constructed multiple favour stone electricity
Bridge-type pressure sensitive unit 46.It is multiple can be understood as it is two or more.
Referring again to Fig. 4-Fig. 6, the first strain inductor 26, second strains inductor 28, third strains 36 and of inductor
The sensitive grid bearing of 4th strain inductor 38 can be understood as the first strain inductor 26 and the second strain induction vertically
The sensitive grid bearing of device 28 is orthogonal, and the sensitive grid bearing of third strain inductor 36 and the 4th strain inductor 38 hangs down mutually
Directly, while the first strain inductor 26 and the sensitive grid bearing of the 4th strain inductor 38 are orthogonal, the second strain inductor 28
It is orthogonal with the sensitive grid bearing of third strain inductor 36.
Referring again to Fig. 3, Fig. 6 and Fig. 7, substrate 12 is offered leads through the first of upper surface 14 and lower surface 16 and interval
Electric hole 18 and the second conductive hole 20.First conductive hole 18 is identical with the quantity of the second conductive hole 20 and is multiple.First conductive hole
18 and second conductive hole 20 quantity with first strain sensor group 24 and second strain the quantity of sensor group 34 it is consistent.First
Strain inductor 26 and the second strain series connection of inductor 28 form first node 30.Third strains inductor 36 and the 4th strain sense
The series connection of device 38 is answered to form second node 40.First strain inductor 26 and the 4th strain inductor 38 are gone here and there by the first conductive hole 18
Join and forms third node 42.Second strain inductor 28 is connected with third strain inductor 36 by the second conductive hole 20 and shape
At fourth node 44.That is, in the present embodiment, third node 42 is formed at the first conductive hole 18, fourth node
44 are formed at the second conductive hole 20.First strain inductor 26, second strains inductor 28, third strain inductor 36 and the
Four strain inductors 38 connect and compose Wheatstone bridge formula pressure sensitive unit 46.
Referring again to Fig. 8, substrate 12 offers 18 He of the first conductive hole through upper surface 14 and lower surface 16 and interval
Second conductive hole 20.Make the first strain inductor 26 and the in the first conductive hole 18 and the second conductive hole 20 filling conductive materials 19
Four strain inductors 38 are connected by the first conductive hole 18 and form third node 42, and the second strain inductor 28 and third strain
Inductor 36 is connected by the second conductive hole 20 and forms fourth node 44.
In some embodiments, the first strain inductor 26, second strains inductor 28, third strains 36 and of inductor
The Standard resistance range of 4th strain inductor 38 is 120 ohm to 50M ohm.
In this way, the Standard resistance range variation of strain inductor is greatly, preferably Standard resistance range can be selected according to demand.Preferably
Ground, in embodiments of the present invention, the Standard resistance range for straining inductor is 1K ohm to 500K ohm.
In some embodiments, Fig. 4 and Fig. 5 are please referred to, the first strain inductor 26, second strains inductor 28, the
At least one of three strain inductors 36 and the 4th strain inductor 38 are in detour bending structure.
In this way, guaranteeing that strain inductor had not only had certain resistance value, but also will not seem too long.
Specifically, strain inductor has certain resistance value, and length is longer, and strain inductor is arranged to detour bending
Structure can be such that strain inductor is preferably arranged on the base substrate 12.
In some embodiments, referring to Fig. 6, the first strain inductor 26 and the 4th strains inductor 38 spatially
Overlapping, the second strain inductor 28 and third strain inductor 36 are spatially overlapped.
In this way, the upper surface 14 of substrate 12 is arranged in the first strain sensor group 24, the second strain sensor group 34 is arranged
In the lower surface of substrate 12 16, two strain sensor groups are spatially overlapped, and reduce space hold.
In some embodiments, referring to Fig. 6, the orthographic projection on the base substrate 12 of first node 30 and second node 40 exist
Orthographic projection on substrate 12 is at least partly overlapped.
In this way, first node 30 and second node 40 are spatially at least partly overlapped, the space benefit of substrate 12 is improved
With rate.Preferably, the orthographic projection of orthographic projection and second node 40 on the base substrate 12 of first node 30 on the base substrate 12 is fully
Overlapping.
In some embodiments, Fig. 1 and Fig. 2 are please referred to, the quantity of pressure sensitive unit 46 is multiple.Multiple feelings of stress
Unit 46 is answered to arrange on the base substrate 12 in array.
It, can be according in this way, multiple pressure sensitive units 46 are for detecting the pressure size for acting on touch display screen 20
The number of actual demand setting pressure sensitive unit 46.
It is appreciated that multiple is two or more.In the example of fig. 1 and 2,6 pressure sensitive units 46 are provided with,
But the number of pressure sensitive unit 46 can actually be set as desired.
In some embodiments, the size of pressure sensitive unit 46 is 20mm2To 25cm2。
In this way, the size of pressure sensitive unit 46 is 20mm2To 25cm2, size conjunction can be made according to demand
Suitable pressure sensitive unit 46.
It is appreciated that in embodiments of the present invention, the maximum area for the pressure sensitive unit 46 that can be made is
25cm2, minimum area 20mm2.In other words, the size of pressure sensitive unit 46 can be 20mm2、25cm2Or 20mm2
To 25cm2Between any number.
In some embodiments, Fig. 1 and Fig. 2 are please referred to, pressure sensitive sensor 10 includes connection first node 30, the
The lead 48 of two nodes 40, third node 42 and fourth node 44, lead 48 is from first node 30, second node 40, third section
Point 42 and fourth node 44 extend to another side of substrate 12 through a side of substrate 12, and a side and another side are substrate
12 sides adjacent.
In this way, lead 48 connects four nodes and flexible circuit board constructs Wheatstone bridge detection circuit.Lead 48 is arranged
Influence of 20 screen deformation of touch display screen to 48 resistance value of lead can be reduced in 12 side of substrate, to avoid the change of 48 resistance value of lead
Change and causes pressure detecting inaccurate greatly.
In example of the invention, the flat shape of substrate 12 is square, and the left and right side of substrate 12 is opposite side, left
Side and downside, upside are sides adjacent, and right side and downside, upside are sides adjacent.In the present example, lead 48 is from first node
30, second node 40, third node 42 and fourth node 44 extend to the downside of substrate 12 through the left and right side of substrate 12.Draw
Line 48 draws connection flexible circuit board on the downside of substrate 12.Certainly, lead 48 can also be from first node 30, second node 40,
Three nodes 42 and fourth node 44 extend to the downside of substrate 12 through the left or right side of substrate 12.Lead 48 can also be from substrate
It draws connection flexible circuit board or lead 48 and draws connection flexible circuit board from about 12 two sides of substrate in 12 upsides.In this way, can
To reduce the length of part lead 48.
It in embodiments of the present invention, is lead 48 on one side except Wheatstone bridge, although the resistance of lead 48
Value can also change, but influence of the variation of 48 resistance value of lead to electric current in circuit is very small；Be on the other hand by
Lead 48 is immediately directed against the position that the nearest edge of screen is corresponded on nearest 12 side of substrate i.e. substrate 12, and uses and compare
Thick lead 48, the diameter range of lead 48 are the first strain inductor 26, second strain inductor 28, third strain inductor
36 and the 4th 5-5000 times of sensitive grid width of strain inductor 38.Pressure sensitive for the screen of touch display screen 20,
When pressing screen, the deformation quantity among screen is significantly larger than the deformation of screen edge.Therefore lead 48 is guided into substrate as early as possible
The position at the nearest edge of screen is corresponded on 12, and the position for corresponding to inside screen region on the base substrate 12 is drawn using thicker
Line 48, (thin some leads 48 can be used in the position edge for corresponding to screen edge on the base substrate 12), can be further reduced
Influence of the screen deformation to 48 resistance value of lead causes greatly pressure detecting inaccurate to avoid 48 change in resistance of lead.
In some embodiments, lead 48 is separately positioned on the upper surface 14 and lower surface 16 of substrate 12.
In this way, lead 48 connects four nodes and flexible circuit board constructs Wheatstone bridge detection circuit.It is shown when touching
When screen 20 is under pressure, the resistance variations of Wheatstone bridge detection circuit detection strain inductor are to detect pressure change.
Specifically, lead 48 is separately positioned on the upper surface 14 and lower surface 16 of substrate 12, i.e. lead 48 is separately positioned on
First conductive layer 22 and the second conductive layer 32.In embodiments of the present invention, the first conductive layer 22 includes first node 30, third
Node 42 and fourth node 44, the second conductive layer 32 include second node 40, third node 42 and fourth node 44,48 He of lead
There are many connection types of node.Referring to Fig. 1, lead 48 is connected to three nodes and another conductive layer in same conductive layer
A node.It is another when three nodes in same conductive layer are first node 30, third node 42, fourth node 44
One node of conductive layer is second node 40.When three nodes in same conductive layer be second node 40, third node 42,
When fourth node 44, a node of another conductive layer is first node 30.Referring to Fig. 2, lead 48 is connected to same conduction
Two nodes of two nodes and another conductive layer in layer.When two nodes in same conductive layer are first node 30, the
When three nodes 42, two nodes of another conductive layer are second node 40, fourth node 44.When two sections in same conductive layer
When point is first node 30, fourth node 44, two nodes of another conductive layer are second node 40, third node 42.
Referring to Fig. 9, the touch display screen component 100 of embodiment of the present invention, the pressure including any of the above-described embodiment
Power inductive pick-up 10 and touch display screen 20.Touch display screen 20 is stacked with pressure sensitive sensor 10.
Incorporated by reference to Fig. 9, in the touch display screen component 100 of embodiment of the present invention, pressure sensitive sensor 10 can be examined
Survey the pressure change in touch display screen 20XY plane.It, will not be to touch display screen 20 when touch display screen 20 is under pressure
It directly squeezes, to avoid influencing the display of touch display screen 20.
In some embodiments, pressure sensitive sensor 10 is located at the lower section of touch display screen 20, pressure sensitive sensing
The size of device 10 is less than or equal to the size of touch display screen 20.
The electronic device of embodiment of the present invention, the touch display screen component 100 including shell and above embodiment, touching
Display screen component 100 is touched to be arranged in shell.
In the electronic device of embodiment of the present invention, touch display screen component 100 includes pressure sensitive sensor 10 and touching
Touch display screen 20.Pressure sensitive sensor 10 can detecte the pressure change in touch display screen 20XY plane.It is shown touching
When screen 20 is under pressure, touch display screen 20 will not directly be squeezed, to avoid influencing the display of touch display screen 20.
It is appreciated that electronic device can have the electric terminal for touching display function for mobile phone, tablet computer etc..
In the description of this specification, reference term " certain embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means to combine embodiment or show
Example particular features, structures, materials, or characteristics described are contained at least one embodiment or example of the invention.At this
In specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the tool of description
Body characteristics, structure, material or feature can be tied in an appropriate manner in any one or more embodiments or example
It closes.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant, and the scope of the present invention is defined by the claims and their equivalents.
Claims (11)
1. a kind of pressure sensitive sensor is used for touch display screen component, which is characterized in that the pressure sensitive sensor packet
It includes:
Substrate, the substrate include upper and lower surfaces, and the substrate is offered through the upper surface and the lower surface
And first conductive hole and the second conductive hole at interval；
First conductive layer, in the upper surface, first conductive layer includes the first strain induction for the first conductive layer setting
Device group, the first strain sensor group include concatenated first strain inductor and the second strain inductor, and described first answers
Become inductor and the second strain inductor is connected the first node to be formed positioned at the upper surface；With
Second conductive layer, in the lower surface, second conductive layer includes the second strain induction for the second conductive layer setting
Device group, the second strain sensor group include concatenated third strain inductor and the 4th strain inductor, and the third is answered
Become inductor and the 4th strain inductor is connected the second node to be formed positioned at the lower surface；
The first strain inductor, the second strain inductor, third strain inductor and the 4th strain sense
Answer the sensitive grid bearing of device perpendicular to one another, the first strain inductor is led with the 4th strain inductor by described first
Electric hole connects and forms third node, and the second strain inductor and third strain inductor are conductive by described second
Hole connects and forms fourth node, and the first strain inductor, the second strain inductor, the third strain inductor
Wheatstone bridge formula pressure sensitive unit is connected and composed with the 4th strain inductor.
2. pressure sensitive sensor as described in claim 1, which is characterized in that the first strain inductor, described second
The Standard resistance range of strain inductor, third strain inductor and the 4th strain inductor is 120 ohm to the Europe 50M
Nurse.
3. pressure sensitive sensor as described in claim 1, which is characterized in that the first strain inductor, described second
Straining at least one of inductor, third strain inductor and described 4th strain inductor is in detour bending structure.
4. pressure sensitive sensor as described in claim 1, which is characterized in that the first strain inductor and the described 4th
Strain inductor is spatially overlapped, and the second strain inductor and third strain inductor are spatially overlapped.
5. pressure sensitive sensor as described in claim 1, which is characterized in that the first node is on the substrate just
Projection and the orthographic projection of the second node on the substrate are at least partly overlapped.
6. pressure sensitive sensor as described in claim 1, which is characterized in that the quantity of the pressure sensitive unit is more
A, the multiple pressure sensitive unit is in array arrangement on the substrate.
7. pressure sensitive sensor as claimed in claim 6, which is characterized in that the size of the pressure sensitive unit is
20mm2To 25cm2。
8. pressure sensitive sensor as described in claim 1, which is characterized in that the pressure sensitive sensor includes connection institute
State the lead of first node, the second node, the third node and the fourth node, the lead is from the first segment
Point, the second node, the third node and the fourth node extend to the substrate through a side of the substrate
Another side, described a side and another side are the sides adjacent of the substrate.
9. pressure sensitive sensor as claimed in claim 8, which is characterized in that the lead is separately positioned on the upper surface
With the lower surface.
10. a kind of touch display screen component characterized by comprising
The described in any item pressure sensitive sensors of claim 1 to 9；With
Touch display screen, the touch display screen are stacked with the pressure sensitive sensor.
11. a kind of electronic device, which is characterized in that described including shell and touch display screen component described in any one of claim 10
Touch display screen component is arranged in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710985321.5A CN109696980A (en) | 2017-10-20 | 2017-10-20 | Pressure sensitive sensor, touch display screen component and electronic device |
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| CN201710985321.5A CN109696980A (en) | 2017-10-20 | 2017-10-20 | Pressure sensitive sensor, touch display screen component and electronic device |
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| CN109696980A true CN109696980A (en) | 2019-04-30 |
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| CN201710985321.5A Pending CN109696980A (en) | 2017-10-20 | 2017-10-20 | Pressure sensitive sensor, touch display screen component and electronic device |
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Effective date of registration: 20210413 Address after: 231323 Building 1, precision electronics industrial park, Hangbu Town, Shucheng County, Lu'an City, Anhui Province Applicant after: Anhui jingzhuo optical display technology Co.,Ltd. Address before: 330013 Huang Jia Hu West Road, Nanchang Economic Development Zone, Jiangxi Applicant before: Nanchang OFilm Tech. Co.,Ltd. |