CN206209645U - Touch screen and electronic equipment - Google Patents
Touch screen and electronic equipment Download PDFInfo
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- CN206209645U CN206209645U CN201620685449.0U CN201620685449U CN206209645U CN 206209645 U CN206209645 U CN 206209645U CN 201620685449 U CN201620685449 U CN 201620685449U CN 206209645 U CN206209645 U CN 206209645U
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Abstract
The utility model proposes touch screen and electronic equipment.Specifically, the touch screen includes：Cover sheet；Display module, the display module is arranged at the cover sheet lower section；And pressure sensitive structure, the pressure sensitive structure includes first pressure inductive layer and second pressure inductive layer, the first pressure inductive layer and second pressure inductive layer are electrically connected, the pressure sensitive structure, the initial capacitance value of the pressure sensitive electric capacity is not more than the 50% of the IC detection capacitance upper limits.By the design to distance and area between first pressure inductive layer and second pressure inductive layer, the initial capacitance value of the pressure sensitive electric capacity for forming it into has certain proportionate relationship with the upper limit of IC detection capacitances, so as to prevent from carrying out during pressure sensitive, because pressure sensitive electric capacity becomes big after pressing, cause the pressure sensitive electric capacity after pressing that signal occurs more than IC upper limit of detection and overflow.
Description
Technical field
The utility model is related to electronic applications, more particularly to touch screen and electronic equipment.
Background technology
Touch-screen is because having the advantages that ease for operation, intuitive and flexibility, it has also become PMC equipment and comprehensive
Close primary human's interactive meanses of information terminal such as panel computer and smart mobile phone, super notebook computer etc..Touch-screen according to
Different touch-control principles can be divided into electric resistance touch screen, capacitance touch screen, infrared touch panel and surface acoustic wave (SAW) touch-screen etc. four
Plant main Types.Wherein capacitance touch screen has a function of multi-point touch, the reaction time is fast, long service life and light transmission rate compared with
Height, user experience is superior, while as the progressively maturation of technique, yields are significantly improved, capacitance plate price is increasingly
Reduce, the major technique that the interaction of small-medium size information terminal touch-control is used has been turned at present.Current capacitance touch screen, can not only
The touch location of plane (X, Y-axis two-dimensional space) where screen body is perceived, for the touch parameter perpendicular to screen body plane (Z axis),
Also can be perceived, i.e., the touch pressure of capacitance touch screen can be sensed.
However, sensitivity and order of accuarcy to improve pressure sensitive, the structure of current touch screen still has much room for improvement.
Utility model content
The utility model is intended at least solve to a certain extent one of technical problem in correlation technique.Therefore, this reality
It is that a kind of three-dimensional multi-point touch control screen is provided with a new purpose.
In one side of the present utility model, the utility model proposes a kind of touch screen.The touch screen includes：Protection cap
Plate；Display module, the display module is arranged at the cover sheet lower section；And pressure sensitive structure, the pressure sensitive
Structure includes first pressure inductive layer and second pressure inductive layer, the first pressure inductive layer and second pressure inductive layer
Electrical connection, the pressure sensitive structure, the initial capacitance value of the pressure sensitive electric capacity is not more than the IC detection capacitance upper limits
50%.By the design to distance and area between first pressure inductive layer and second pressure inductive layer, form it into
The initial capacitance value of pressure sensitive electric capacity has certain proportionate relationship with the upper limit of IC detection capacitances, so as to prevent being pressed
When power senses, because pressure sensitive electric capacity becomes big after pressing, the pressure sensitive electric capacity after pressing is caused more than IC upper limit of detection
And there is signal spilling.
Optionally, there is compressible space between the first pressure inductive layer and the second pressure inductive layer.In reality
Border when using, first pressure inductive layer can occur different degrees of deformation with the difference perpendicular to screen body plane touch-control dynamics,
So that the electric capacity between first pressure inductive layer and second pressure inductive layer changes with the change of distance between two-layer,
And then the touch screen can perceive the change of the touch-control pressure on diverse location, such that it is able to realize pressure sensitive function.
Optionally, the height of the compressible space is 0.1~0.4mm.Thus, it is possible to ensure first pressure inductive layer with
And between second pressure inductive layer there is appropriate spacing to serve as deformation space, such that it is able to make the pressure sensitive capacitance to be formed
It is suitable to IC detections, it is to avoid signal overflows.
Optionally, the first pressure inductive layer has multiple first pressure induction electrodes, optionally, the second pressure
Inductive layer has multiple second pressure induction electrodes.Thus, it is possible to strengthen sensitivity of the electronic equipment to pressure.
Optionally, the display module has optical filter, and the first pressure inductive layer is arranged on the optical filter, institute
The first pressure induction electrode gross area is stated for 5~80mm2.Thus, it is possible to pass through to control the electrode on first pressure inductive layer total
Area, makes pressure sensitive electric capacity be in appropriate number range, such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC
Detection, it is to avoid signal overflows.
Optionally, the display module has back light unit, and the first pressure inductive layer is arranged at the back light unit
Reflector plate on, the second pressure inductive layer is the chase of the back light unit, the first pressure induction electrode gross area
It is 1~80mm2.Thus, it is possible to pass through to control the electrode gross area on first pressure inductive layer, it is in pressure sensitive electric capacity suitable
When number range in, such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC detect, it is to avoid signal overflow.
Optionally, the display module has optical filter and back light unit, and the first pressure inductive layer is arranged at institute
State on optical filter, the second pressure inductive layer is the chase of the back light unit, the first pressure induction electrode gross area
It is 1~40mm2.Thus, it is possible to pass through to control the electrode gross area on first pressure inductive layer, it is in pressure sensitive electric capacity suitable
When number range in, such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC detect, it is to avoid signal overflow.
Optionally, the display module has back light unit, and the first pressure inductive layer is arranged at the back light unit
Reflector plate on, the second pressure inductive layer is the chase of the back light unit, the first pressure inductive layer and described
The distance of second pressure inductive layer is 0.1~0.4mm.Thus, it is possible to ensure first pressure inductive layer and second pressure sensing
There is appropriate spacing to serve as deformation space between layer, detected such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC, keep away
Exempt from signal spilling.
Optionally, the display module has optical filter, and the first pressure inductive layer is arranged on the optical filter, institute
State the chase that second pressure inductive layer is the back light unit, the first pressure inductive layer and the second pressure inductive layer
Distance be 0.6~1.3cm.Thus, it is possible to ensure have suitably between first pressure inductive layer and second pressure inductive layer
Spacing serve as deformation space, such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC detect, it is to avoid signal overflow.
Optionally, the display module has public electrode, and the second pressure inductive layer is the public electrode, described
The distance of first pressure inductive layer and the second pressure inductive layer is 0.6~1.3cm.Thus, it is possible to ensure first pressure
There is appropriate spacing to serve as deformation space, such that it is able to make the feeling of stress to be formed between inductive layer and second pressure inductive layer
Answer capacitance to be suitable to IC to detect, it is to avoid signal overflows.
Optionally, the display module has public electrode, and the second pressure inductive layer is the public electrode, described
The first pressure induction electrode gross area is 1~500mm2.Thus, it is possible to pass through to control the total face of electrode on first pressure inductive layer
Product, makes pressure sensitive electric capacity be in appropriate number range, is examined such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC
Survey, it is to avoid signal overflows.
Optionally, the first pressure inductive layer includes sensor circuit and drive circuit, the sensor circuit and institute
The distance between drive circuit is stated for 0.04~0.15mm.Now first pressure inductive layer can be defeated from by way of holding individual layer
Go out the inductance capacitance with pressure correlation, second pressure inductive layer can be used as ground plane.Thus, it is possible to ensure first pressure inductive layer
Sensor circuit and drive circuit between there is appropriate spacing to serve as deformation space, such that it is able to make first pressure after pressing
Inductive layer output electric capacity be suitable to IC detection, it is to avoid after pressing formed capacitance it is too small and reduce detection sensitivity level.
Optionally, the sensor circuit and the drive circuit couple to form mutual tolerance electric capacity, at the beginning of the mutual tolerance electric capacity
80% of beginning capacitance not less than the IC detection capacitance upper limits.Thus, it is possible to ensure the sensor circuit of first pressure inductive layer with
And the mutual tolerance electric capacity formed between drive circuit is within appropriate number range, such that it is able to make first pressure sense after pressing
Answer layer export mutual tolerance electric capacity be suitable to IC detect, it is to avoid after pressing formed capacitance it is too small and reduce detection sensitivity level.
In another aspect of the present utility model, the utility model proposes a kind of electronic equipment.The electronic equipment includes preceding
Touch screen described in face and the center for supporting the touch screen, the center constitute the second pressure inductive layer.Adopt
With center as second pressure inductive layer, due to without additionally setting second pressure inductive layer, advantageously reducing the electronic equipment
Thickness, reduce production cost.
Optionally, first pressure inductive layer is arranged at when on optical filter, the first pressure induction electrode gross area be 5~
80mm2；When first pressure inductive layer is arranged on reflector plate, the first pressure induction electrode gross area is 1~80mm2.When
When center is as second pressure inductive layer, pressure sensitive electric capacity is electrically connected to form with first pressure inductive layer, according to first pressure
The distance between particular location and first pressure inductive layer and center of inductive layer, in regulation first pressure inductive layer first
The pressure sensitive electrode gross area, detects such that it is able to make the electric capacity exported after pressing be suitable to IC.
Optionally, when the first pressure inductive layer is arranged on the optical filter, the first pressure inductive layer with
And the distance of the second pressure inductive layer is 0.6~1.3cm；When the first pressure inductive layer is arranged at the back light unit
Reflector plate on when, the distance of the first pressure inductive layer and the second pressure inductive layer is 0.1~0.4mm.It is central
When frame is as second pressure inductive layer, pressure sensitive electric capacity is electrically connected to form with first pressure inductive layer, according to first pressure sense
Answer the particular location of layer, the distance between regulation first pressure inductive layer and center, such that it is able to the electric capacity for making to be exported after pressing
It is suitable to IC detections.
Brief description of the drawings
Fig. 1 shows the structural representation of the touch screen according to the utility model one embodiment；
Fig. 2 shows the part-structure schematic diagram of the touch screen according to the utility model another embodiment；
Fig. 3 shows the part-structure schematic diagram of the touch screen according to the utility model another embodiment；
Fig. 4 shows the part-structure schematic diagram of the touch screen according to the utility model another embodiment；
Fig. 5 shows the part-structure schematic diagram of the touch screen according to the utility model another embodiment；
Fig. 6 shows the part-structure schematic diagram of the touch screen according to the utility model another embodiment；
Fig. 7 A- Fig. 7 F show the electrode structure schematic diagram of the first pressure inductive layer according to the utility model embodiment；
Fig. 8 A- Fig. 8 C show the structural representation of the pressure sensitive electrode according to the utility model embodiment；And
Fig. 9 shows the structural representation of the electronic equipment according to the utility model one embodiment.
Description of reference numerals：
100：Cover sheet；
200：Display module；
210：Optical filter；220：Liquid crystal display 230：Back light unit；240：Chase；250：Reflector plate；260：It is public
Electrode
300：Pressure sensitive structure；310：First pressure inductive layer；320：Second pressure inductive layer；10：Pressure sensitive electricity
Pole；20：Shielding line；30：Induction electrode；40：Driving electrodes
400：Compressible space
500：Center
1000：Electronic equipment；1100：Touch screen.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limitation.
In description of the present utility model, term " on ", D score, " vertical ", " level ", " top ", " bottom ", " width ", " thick
The orientation or position relationship of the instructions such as degree " are, based on orientation shown in the drawings or position relationship, to be for only for ease of and describe this reality
With new rather than requiring that the utility model must be with specific azimuth configuration and operation therefore it is not intended that new to this practicality
The limitation of type.In the utility model, touch screen, electronic equipment, cover sheet or first pressure inductive layer, second pressure sense
The terms such as layer isostructural " upper surface ", " top " are answered to refer in particular in actual use, the equipment such as touch screen or structure are towards user
Side, i.e., user is by touching or pressure touch implements the side of operation to touch screen or electronic equipment.
Of the present utility model in a first aspect, the utility model proposes a kind of touch screen.Specifically, with reference to Fig. 1, this is touched
Control screen includes：Cover sheet 100, display module 200 and pressure sensitive structure 300, pressure sensitive structure 300 include first
Pressure sensitive layer 310 and second pressure inductive layer 320.Wherein, display module 200 is arranged on the lower surface of cover sheet 100, pressure
At least one of which of power induction structure 300 is arranged inside display module 200, or pressure sensitive structure may be contained within display module
Outside (not shown), the initial capacitance value of pressure sensitive electric capacity is not more than the 50% of the IC detection capacitance upper limits.When to this
When touch screen carries out touch control operation, at least one of first pressure inductive layer 310 and second pressure inductive layer 320 can be due to touching
Governor pressure and deform, so as to cause at touch point between first pressure inductive layer 310 and second pressure inductive layer 320
Electric capacity changes with touch-control pressure, such that it is able to realize pressure sensitive.By to first pressure inductive layer and second pressure
Between inductive layer distance, first pressure inductive layer 310 and in second pressure inductive layer 320 electrode area design, make its shape
Into the upper limit of initial capacitance value and IC detection capacitance of pressure sensitive electric capacity there is certain proportionate relationship, so as to prevent into
During row pressure sensitive, because the change of pressure sensitive electric capacity is big after pressing or diminishes, the pressure sensitive electric capacity after pressing is caused to surpass
Cross IC upper limit of detection and signal spilling occurs, or pressure sensitive electric capacity becomes too small and causes detection sensitivity after the pressing
Difference.
Understand for convenience, the principle worked according to the touch screen of the utility model embodiment is carried out briefly first below
Explanation：When touch screen is pressed by touch, the meeting of at least one of first pressure inductive layer 310 and second pressure inductive layer 320
As the structure such as cover sheet 100 and display module 200 is deformed upon together, the electric capacity computing formula according to Formulas I：
C=ε S/4 π kd Formulas I
Electric capacity C and two pole plates (i.e. first pressure inductive layer 310 and second pressure inductive layer 320) for constituting the electric capacity
Between the distance between the permittivity ε of medium, polar plate area S and pole plate d about (k is related to permittivity of vacuum normal
Number).When between first pressure inductive layer 310 and second pressure inductive layer 320 distance change (the d values i.e. in Formulas I) when, on
The pressure sensitive electric capacity formed between two-layer is stated also to change, and the change of above-mentioned distance and the pressure being applied on touch screen
It is relevant.For example, when the touch screen is under pressure pressing, the spacing of first pressure inductive layer 310 and second pressure inductive layer 320
From diminishing, pressure sensitive electric capacity increases with the increase of pressure.Therefore, it can to set up the capacitance variation information of capacitance sensor with
The correlation database by force information of touch screen.Thus, it is possible to realize (touching the touch parameter perpendicular to screen body plane
Touch pressure) perceived.In specific signal detection process, foregoing pressure sensitive electricity direct or indirect can must be measured
Hold, such as directly measure foregoing pressure sensitive electric capacity by from the detection method of appearance or double-deck mutual tolerance, or by individual layer mutual tolerance
Detection method measure foregoing pressure sensitive electric capacity indirectly.For individual layer mutual tolerance detection method, it is also possible to set up detection electric capacity
The correlation database by force information of signal and touch screen, so as to realize that touch pressure is perceived.
Below to being described in detail according to the unit of touch screen of the present utility model.
According to embodiment of the present utility model, with reference to Fig. 2, in first pressure inductive layer 310 and second pressure inductive layer 320
Between have compressible space 400.Compressible space 400 can be able to be the first pressure when pressing touch-control is carried out to touch screen
Power inductive layer 310 and/or second pressure inductive layer 320 provide the space of deformation.Thus, it is possible to realize according to the utility model reality
Apply the pressure sensitive function of the touch screen of example.It will be appreciated to those of skill in the art that compressible space 400 in above-mentioned legend
The exemplary only description in position, in actual applications, as long as compressible space 400 be located at first pressure inductive layer 310 with
Can be the gap within a module in the touch screen or between multiple modules between second pressure inductive layer 320
(as air), it is also possible to be arranged on the space within a module or between multiple modules, and the bullet filled with changeability
Property material, for example, can in compressible space 400 filled and process, gel or porous material.In implementation of the present utility model
In example, the height of compressible space 400 (or be the thickness of compressible space 400, it is upper and lower along touch screen in the compressible space
Distance on direction, the H shown in figure) can between 0.1~0.4 millimeter, between the variant position of identical product can
The difference in thickness of compression stroke 400 may remain between 0.02-0.2 millimeters, thereby, it is possible to ensure good homogeneity.Will
The thickness of compressible space 400 is set within the above range, it is ensured that first pressure inductive layer and second pressure inductive layer
Between have appropriate spacing serve as deformation space, such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC detect, it is to avoid
Signal overflows.
According to embodiment of the present utility model, cover sheet 100 is arranged on the top of touch screen, so as to for according to this reality
Protection is provided with the miscellaneous part of the touch screen of new embodiment.According to embodiment of the present utility model, the tool of cover sheet 100
Body material is not particularly limited, and those skilled in the art can be carried out according to actual conditions to the material for constituting cover sheet 100
Selection.For example, according to specific embodiment of the utility model, cover sheet 100 for glass, sapphire and transparent can have
Machine membrane material (such as the polymer organic such as polymethyl methacrylate film) is constituted.Above-mentioned material wide material sources, it is readily available, can
For the touch screen provides the protection with sufficient intensity, and light transmission is good, does not interfere with the display function of the touch screen.
It should be noted that in the utility model, the particular type of display module 200 is not particularly limited, can wrap
Liquid crystal display is included, such as can be the display screen of IPS, TN, STN mode, or organic luminescence display unit, such as
Can be active organic luminescence display unit (AMOLED) or passive organic light-emitting display unit (PMOLED).It is above-mentioned aobvious
Show that the concrete composition and structure of all parts that module 200 includes are not particularly limited, as long as display function can be realized i.e.
Can.
Below according to embodiment of the present utility model, first pressure inductive layer 310, second pressure inductive layer 320 are set
Position and the parameter such as size, shape of electrode be described in detail.
According to embodiment of the present utility model, first pressure inductive layer 310 has multiple first pressure induction electrodes, second
Pressure sensitive layer 320 can also have multiple second pressure induction electrodes.Thus, it is possible to strengthen sensitivity of the touch screen to pressure
Degree.
According to embodiment of the present utility model, with reference to Fig. 4, display module 200 has optical filter 210, first pressure sensing
Layer 310 is arranged on optical filter 210.For example, first pressure inductive layer 310 can be attached on the lower surface of optical filter 210.
Thus, it is possible to the easy smooth degree that first pressure inductive layer 310 is improved by more smooth optical filter 210, such that it is able to
Heighten the accuracy of pressure sensitive.According to embodiment of the present utility model, now multiple first in first pressure inductive layer 310
The gross area of pressure sensitive electrode can be 5~80mm2.According to embodiment of the present utility model, liquid is included in display module 200
During brilliant display unit 220, in addition it is also necessary to including back light unit 230 realizing display function.Wherein, can be wrapped in back light unit 230
Include chase 240.Now, chase 240 can be as second pressure inductive layer 320.Thus, it is possible to easy pass through more smooth filter
Mating plate 210 improves the smooth degree of first pressure inductive layer 310, such that it is able to heighten the accuracy of pressure sensitive, using chase
240 used as second pressure inductive layer 320, is conducive to simplifying the structure of the touch screen, simplifies preparation technology, reduces production cost.
Now, the distance of first pressure inductive layer 310 and second pressure inductive layer 320 can be 0.6~1.3cm, first pressure sense
The gross area for answering the first pressure induction electrode on layer 310 can be 1~40mm2.Thus, it is possible to pass through to adjust first pressure sense
Answer the gross area of the distance between layer 310 and second pressure inductive layer 320 and first pressure induction electrode, it is ensured that formation
Pressure sensitive capacitance is suitable to IC detections, it is to avoid signal overflows.
When organic luminescence display unit is included in the display module 200, according to embodiment of the present utility model, Ke Yishi
When the distance for reducing first pressure inductive layer 310 and second pressure inductive layer 320, for example, according to of the present utility model specific
Embodiment, the distance can be 0.1~0.8cm.Thus, it is possible to pass through to adjust first pressure inductive layer 310 and second pressure
The gross area of the distance between inductive layer 320 and first pressure induction electrode, it is ensured that the pressure sensitive capacitance of formation is suitable to
IC is detected, it is to avoid signal overflows.
According to embodiment of the present utility model, with reference to Fig. 5, back light unit 230 can also have reflector plate 250, the first pressure
Power inductive layer 310 can be arranged on the reflector plate 250 of back light unit 230, for example, can paste first pressure inductive layer 310
It is attached on the upper surface (not shown) of reflector plate 250 or lower surface.Second pressure inductive layer 320 can be (the figure of chase 240
Not shown in).Thus, it is possible to the easy smooth journey that first pressure inductive layer 310 is improved by more smooth reflector plate 250
Degree, such that it is able to heighten the accuracy of pressure sensitive, and by the use of chase 240 as second pressure inductive layer 320, is conducive to simplifying
The structure of the touch screen, simplifies preparation technology, reduces production cost.When use chase 240 is used as second pressure inductive layer 320
When, the first pressure induction electrode gross area in first pressure inductive layer 310 can be 1~40mm2, first pressure inductive layer
310 and the distance of second pressure inductive layer 320 can be 0.1~0.4mm.Thus, it is possible to pass through to adjust first pressure sensing
Layer the distance between 310 and second pressure inductive layer 320 and the gross area of first pressure induction electrode, it is ensured that the pressure of formation
Power induced electricity capacitance is suitable to IC detections, it is to avoid signal overflows.
According to embodiment of the present utility model, with reference to Fig. 6, display module 200 can also have public electrode 260.Can be with
Using public electrode 260 as second pressure inductive layer 320, the voltage of 2~6V is applied to public electrode 260, make first pressure
Inductive layer 310 forms double-deck mutual tolerance type structure with public electrode 260.The position of the (not shown) of first pressure inductive layer 310
It is not particularly limited, can be arranged between cover sheet 100 and display module 200, is integrated within display module 200,
Or it is arranged at the lower section of display module 200.The distance of first pressure inductive layer 310 and second pressure inductive layer 320 can be
0.6~1.3cm.According to embodiment of the present utility model, the gross area of first pressure induction electrode can be 1~500mm2.By
This, it is ensured that the pressure sensitive electric capacity formed between first pressure inductive layer and second pressure inductive layer is in appropriate number
In the range of value, detected such that it is able to make the pressure sensitive capacitance to be formed be suitable to IC, it is to avoid signal overflows.
According to embodiment of the present utility model, with reference to Fig. 7 F, sensor circuit can also be included in first pressure inductive layer 310
30 and drive circuit 40, second pressure inductive layer 320 completes feeling of stress as ground connection reference electrode using the mutual capacitance type of individual layer
Should.Now, sensor circuit 30 and the coupling of drive circuit 40 forms mutual tolerance electric capacity, now, when pressing the touch screen, the
One pressure sensitive layer 310 is deformed upon, the increase of the distance between sensor circuit 30 and drive circuit 40, sensor circuit after pressing
Mutual tolerance electric capacity (C between 30 and drive circuit 401) diminish.Simultaneously as first pressure inductive layer 310 and second pressure
The distance between inductive layer 320 also there occurs the electric capacity between change, therefore induction electrode 30 and second pressure inductive layer 320
(C2), the electric capacity between driving electrodes 40 and second pressure inductive layer 320 changes (C with pressure3).Now, second pressure
Inductive layer 320 can be as reference, by counting statistics C1、C2And C3Change before and after pressing, the COMPREHENSIVE CALCULATING touch screen
Suffered pressure, such that it is able to improve the pressure sensitive order of accuarcy of the touch screen.At this point it is possible to pass through to control first pressure
The size of electrode or the distance between sensor circuit 30 and drive circuit 40, make the initial of mutual tolerance electric capacity in inductive layer 310
80% of capacitance not less than the IC detection capacitance upper limits.Thus, it is possible to ensure the sensor circuit 30 of first pressure inductive layer 310
And the mutual tolerance electric capacity formed between drive circuit 40 is within appropriate number range, such that it is able to make the first pressure after pressing
Power inductive layer 310 output mutual tolerance electric capacity be suitable to IC detection, it is to avoid after pressing formed capacitance it is too small and reduce detection spirit
Quick degree.Specifically, the distance between sensor circuit 30 and drive circuit 40 (D shown in figure) can for 0.04~
0.15mm.Thus, it is possible to have appropriate spacing to fill between ensureing the sensor circuit and drive circuit of first pressure inductive layer
Work as deformation space, the electric capacity such that it is able to make first pressure inductive layer output after pressing is suitable to IC and detects, it is to avoid formed after pressing
Capacitance it is too small and reduce detection sensitivity level.
It should be noted that the specific material and concrete structure of composition first pressure inductive layer 310 are not particularly limited,
Those skilled in the art can be designed according to actual conditions.For example, according to embodiment of the present utility model, first pressure sense
Answer layer 310 can by ITO, metal grill (metal mesh), development conducting film, be coated with metal graphene layer (such as Cu,
Ag coating, or metal organic ink, such as silver paste, copper slurry) formed.The specific set-up mode of first pressure inductive layer 310
Also it is not particularly limited, for example, according to embodiment of the present utility model, can be by needing to set first pressure inductive layer
Conductive layer is plated in position, then forms the first pressure inductive layer with predetermined electrode pattern by modes such as etchings, it is also possible to straight
Connected screen printing scopiform into first pressure inductive layer.In some embodiments of the present utility model, first pressure inductive layer can
To be formed in flexible parent metal (such as transparent organic film material of PET, PC etc.), it is also possible to form groove on flexible parent metal, will
First pressure inductive layer is arranged in groove.
It will be appreciated to those of skill in the art that in order to improve pressure sensing effect, with reference to Fig. 7 A and Fig. 7 B, first
The surface of pressure sensitive layer 310 can have multiple pressure sensitive electrodes 10, and multiple pressure sensitive electrodes 10 constitute electrod-array.
Independent detection is carried out to the touch-control pressure of the diverse location of the touch screen using electrod-array, the inspection of electronic equipment pressure can be improved
The sensitivity level of survey.Specifically, multiple pressure sensitive electrodes 10 can independently form pressure between second pressure inductive layer
Power inductance capacitance, to react the capacitance of the touch-control screen surfaces different loci.For example, with reference to Fig. 7 A, first pressure inductive layer
Can be made up of multiple regularly arranged electrodes 10.By adjusting the area of each hollow out electrode, each electrode can be adjusted
Original capacitance value (i.e. touch-control screen surfaces do not receive touch control operation when capacitance).Using the regularly arranged hollow out electricity of above-mentioned multiple
Pole covering needs to carry out pressure sensing region, it is possible to achieve the test point of monitored area is uniformly distributed.Those skilled in the art
, it is understood that the concrete shape of above-mentioned multiple pressure sensitive electrodes 10, arrangement mode and quantity are not particularly limited, can
It is designed for the specific requirement of pressure sensing susceptibility with according to the touch screen.For example, with reference to Fig. 7 B, multiple feelings of stress
Answer electrode 10 area can not all it is equal.Because the touch screen diverse location is by the touch-control pressure perpendicular to touch screen
When the deformation degree that produces it is different, therefore the area of multiple pressure sensitive electrodes 10 all inequal is conducive to utilizing electrode area
The initial capacitance of diverse location is adjusted, so as to be conducive to strengthening the pressure sensitive sensitivity level of each position on the touch screen.Example
Such as, according to specific embodiment of the utility model, because deformation of the touch screen middle position when touch-control is under pressure is compared with touch-control
Bigger at platen edge, the area positioned at the pressure sensitive electrode 10B of touch screen middle position can be less than positioned at touch-control platen edge
Pressure sensitive electrode 10A area.
In order to further improve the pressure touch inductive effects of the touch screen, according to embodiment of the present utility model, first
Pressure sensitive layer can also further have shielding line 20.Specifically, with reference to Fig. 7 C, shielding line 20 can be around pressure sensitive electricity
Pole 10 is set.Thus, it is possible to the signal between adjacent pressure sensitive electrode is shielded to prevent from interfering with each other using the shielding line,
Such that it is able to improve sensitivity of the first pressure inductive layer for pressure sensitive and order of accuarcy.
According to embodiment of the present utility model, when shape between first pressure inductive layer 310 and second pressure inductive layer 320
During into mutual tolerance type electric capacity, with reference to Fig. 7 D, first pressure inductive layer 310 can have the pressure of the electrode pattern of multiple strip hollow outs
Induction electrode 10 (10A-10D in figure), can be using first pressure inductive layer 310 as inductive layer, and second pressure inductive layer 320
Then as driving layer.With reference to Fig. 7 E, second pressure inductive layer 320 can have and the feeling of stress in first pressure inductive layer 310
The vertically disposed electrode of electrode 10 is answered, as driving electrodes 40, to realize the pressure sensitive function of the touch screen.Need explanation
, the structure of first pressure inductive layer 310 or second pressure inductive layer 320 shown in Fig. 7 D and Fig. 7 E is only to show
Example property, the quantity of electrode, shape, arrangement mode and company in first pressure inductive layer 310 or second pressure inductive layer 320
The mode of connecing is not particularly limited, as long as shape can be coupled between first pressure inductive layer 310 and second pressure inductive layer 320
Into mutual tolerance type electric capacity.It is for instance possible to use man-to-man coupled modes, 1 feeling of stress in first pressure inductive layer 310
Electrode is answered to be coupled with 1 pressure sensitive electrode (as drive circuit) in second pressure inductive layer 320 as sensor circuit, from
And can realize carrying out the touch screen pressure subregion sensing.Or, one-to-many coupled modes, i.e. first pressure can be used
A pressure sensitive electrode in inductive layer 310 is used as the multiple pressure sensitives in induction electrode and second pressure inductive layer 320
Electrode (as drive circuit) is coupled, or multiple pressure sensitive electrodes in first pressure inductive layer 310 as sensor circuit with
A pressure sensitive electrode (as drive circuit) coupling in second pressure inductive layer 320.
According to embodiment of the present utility model, in the touch screen, pressure sensitive electrode 10 (including first pressure induced electricity
Pole and second pressure induction electrode) can be polygonal electrodes, random electrode block or hollow out electrode.For example, feeling of stress
It can be the regular polygons such as square to answer electrode, or the electrode with irregular shape.Specifically, with reference to Fig. 8 A with
And Fig. 8 B, pressure sensitive electrode 10 can be rhombus, it is also possible to carry out hollow processing to pressure sensitive electrode 10.Need explanation
It is that the pierced pattern shown in Fig. 8 B is exemplary only, it is impossible to be interpreted as to limitation of the present utility model.That is hollow out electrode
The number of 10 void region can not be 1, and the shape of void region can also be rectangular in addition to can be for square
Shape, circle, triangle etc., for example, according to embodiment of the present utility model, pressure sensitive electrode 10 can have institute in Fig. 8 C
The hollow out shape shown.Those skilled in the art can also be according to touch-control screen surfaces for pressure touch sensitivity requirement, it is right
Pressure sensitive electrode pattern is designed, and thus, is easy to regulate and control the initial capacitance value of the pressure sensitive electrode, and advantageously form
Regularly arranged array electrode, and then preparation technology can be simplified.
In another aspect of the present utility model, the utility model proposes a kind of electronic equipment.With reference to Fig. 9, the electronics sets
Standby 1000 include previously described touch screen 1100 and the center (not shown) for supporting the touch screen 1100, its
In, with reference to Fig. 3 and Fig. 5, center 500 constitutes second pressure inductive layer 320.Thus, second pressure sensing is set without extra
Layer 320, advantageously reduces the thickness of the electronic equipment.It should be noted that the touch screen 1100 in the electronic equipment is with preceding
Whole features and advantage of the touch screen 1100 of face description, will not be repeated here.
According to embodiment of the present utility model, first pressure inductive layer 310 is arranged at when on optical filter 210, first pressure
The distance of inductive layer 310 and second pressure inductive layer 320 can be 0.6~1.3cm, many in first pressure inductive layer 310
The gross area of individual first pressure induction electrode can be 5~80mm2.Thus, be conducive to simplifying the structure of the electronic equipment, simplify
Preparation technology, reduces production cost.According to embodiment of the present utility model, with reference to Fig. 5, back light unit 230 can also have anti-
Piece 250 is penetrated, first pressure inductive layer 310 can be arranged on the reflector plate 250 of back light unit 230, for example, can be by the first pressure
Power inductive layer 310 is attached on the upper surface (not shown) of reflector plate 250 or lower surface.According to implementation of the present utility model
Example, the gross area of the first pressure induction electrode in first pressure inductive layer 320 can be 1~80mm2, first pressure inductive layer
310 and the distance of second pressure inductive layer 320 can be 0.1~0.4mm.Thus, it is possible to pass through to adjust first pressure sensing
Layer the distance between 310 and second pressure inductive layer 320 and the gross area of first pressure induction electrode, it is ensured that the pressure of formation
Power induced electricity capacitance is suitable to IC detections, it is to avoid signal overflows.
It should be noted that as second pressure inductive layer 320 is made up of center 500, because structure design needs, center
500 subregion needs borehole, therefore now needs to enter second pressure inductive layer 320 according to the borehole region of center 500
The related adjustment of row, to prevent the pressure sensitive capacitance exception at borehole.
According to embodiment of the present utility model, the electronic equipment can further include touch sensitive layer.Touch sensible
Layer can have touch-control screen structure commonly used in the art, for example, can be external hanging type (including but not limited to OGS, GF, GFF, GF2
Deng), the touch-control screen structure of the mode such as on-cell, in-cell.
It should be noted that above-described embodiment is exemplary, it is impossible to be interpreted as to limitation of the present utility model, this area
Technical staff above-described embodiment can be changed in the range of the utility model, changed, replaced and modification.
In the description of this specification, the description of reference term " one embodiment ", " another embodiment " etc. means knot
Specific features, structure, material or the feature for closing embodiment description are contained at least one embodiment of the present utility model.
In this manual, the schematic representation to above-mentioned term is necessarily directed to identical embodiment or example.And, description
Specific features, structure, material or feature can in an appropriate manner combine in any one or more embodiments or example.
Additionally, in the case of not conflicting, those skilled in the art can by the different embodiments described in this specification or
The feature of example and different embodiments or example is combined and combines.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (16)
1. a kind of touch screen, it is characterised in that including：
Cover sheet；
Display module, the display module is arranged at the cover sheet lower section；And
Pressure sensitive structure, the pressure sensitive structure includes first pressure inductive layer and second pressure inductive layer, described the
One pressure sensitive layer and second pressure inductive layer electrically connect and form pressure sensitive electric capacity, the pressure sensitive electric capacity it is initial
Capacitance is not more than the 50% of the IC detection capacitance upper limits.
2. touch screen according to claim 1, it is characterised in that the first pressure inductive layer and second pressure sense
There is compressible space between layer.
3. touch screen according to claim 2, it is characterised in that the height of the compressible space is 0.1~0.4mm.
4. touch screen according to claim 1, it is characterised in that the first pressure inductive layer has multiple first pressures
Induction electrode,
Optionally, the second pressure inductive layer has multiple second pressure induction electrodes.
5. touch screen according to claim 4, it is characterised in that the display module has optical filter, first pressure
Power inductive layer is arranged on the optical filter, and the first pressure induction electrode gross area is 5~80mm2。
6. touch screen according to claim 4, it is characterised in that the display module has back light unit, described first
Pressure sensitive layer is arranged on the reflector plate of the back light unit, and the second pressure inductive layer is the iron of the back light unit
Frame, the first pressure induction electrode gross area is 1~80mm2。
7. touch screen according to claim 4, it is characterised in that the display module has optical filter and backlight list
Unit, the first pressure inductive layer is arranged on the optical filter, and the second pressure inductive layer is the iron of the back light unit
Frame, the first pressure induction electrode gross area is 1~40mm2。
8. touch screen according to claim 1 and 2, it is characterised in that the display module has back light unit, described
One pressure sensitive layer is arranged on the reflector plate of the back light unit, and the second pressure inductive layer is the iron of the back light unit
The distance of frame, the first pressure inductive layer and the second pressure inductive layer is 0.1~0.4mm.
9. touch screen according to claim 6, it is characterised in that the display module has optical filter, first pressure
Power inductive layer is arranged on the optical filter, and the second pressure inductive layer is the chase of the back light unit, first pressure
The distance of power inductive layer and the second pressure inductive layer is 0.6~1.3cm.
10. touch screen according to claim 1 and 2, it is characterised in that the display module has public electrode, described
Second pressure inductive layer is the public electrode, and the distance of the first pressure inductive layer and the second pressure inductive layer is
0.6~1.3cm.
11. touch screens according to claim 4, it is characterised in that the display module has public electrode, described second
Pressure sensitive layer is the public electrode, and the first pressure induction electrode gross area is 1~500mm2。
12. touch screens according to claim 1 and 2, it is characterised in that the first pressure inductive layer includes sensor circuit
And drive circuit, the distance between the sensor circuit and the drive circuit are 0.04~0.15mm.
13. touch screens according to claim 12, it is characterised in that the sensor circuit and the drive circuit are coupled
Mutual tolerance electric capacity is formed, the initial capacitance value of the mutual tolerance electric capacity is not less than the 80% of the IC detection capacitance upper limits.
14. a kind of electronic equipment, it is characterised in that including the touch screen described in any one of claim 1~13 and for propping up
The center of the touch screen is supportted, the center constitutes the second pressure inductive layer.
15. electronic equipments according to claim 14, it is characterised in that first pressure inductive layer is arranged on optical filter
When, the first pressure induction electrode gross area is 5~80mm2；
When first pressure inductive layer is arranged on reflector plate, the first pressure induction electrode gross area is 1~80mm2。
16. electronic equipments according to claim 14, it is characterised in that described in being arranged at when the first pressure inductive layer
When on optical filter, the distance of the first pressure inductive layer and the second pressure inductive layer is 0.6~1.3cm；
When the first pressure inductive layer is arranged on the reflector plate of the back light unit, the first pressure inductive layer and
The distance of the second pressure inductive layer is 0.1~0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620685449.0U CN206209645U (en) | 2016-07-01 | 2016-07-01 | Touch screen and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620685449.0U CN206209645U (en) | 2016-07-01 | 2016-07-01 | Touch screen and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206209645U true CN206209645U (en) | 2017-05-31 |
Family
ID=58755028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620685449.0U Active CN206209645U (en) | 2016-07-01 | 2016-07-01 | Touch screen and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN206209645U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107272953A (en) * | 2017-06-16 | 2017-10-20 | 京东方科技集团股份有限公司 | A kind of pressure touch display device and its control method |
| CN107562292A (en) * | 2016-07-01 | 2018-01-09 | 南昌欧菲光科技有限公司 | Touch screen and electronic equipment |
-
2016
- 2016-07-01 CN CN201620685449.0U patent/CN206209645U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107562292A (en) * | 2016-07-01 | 2018-01-09 | 南昌欧菲光科技有限公司 | Touch screen and electronic equipment |
| CN107272953A (en) * | 2017-06-16 | 2017-10-20 | 京东方科技集团股份有限公司 | A kind of pressure touch display device and its control method |
| CN107272953B (en) * | 2017-06-16 | 2019-12-10 | 京东方科技集团股份有限公司 | Pressure touch display device and control method thereof |
| US11216103B2 (en) | 2017-06-16 | 2022-01-04 | Boe Technology Group Co., Ltd. | Pressure touch control display apparatus and control method therefor |
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Address after: Room 615, 28 High-tech Second Road, Nanchang High-tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi Huiguang Microelectronics Co.,Ltd. Address before: Room 615, 28 High-tech Second Road, Nanchang High-tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: Nanchang Oufei Touch Technology Co.,Ltd. |
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Effective date of registration: 20210422 Address after: 231323 Building 1, precision electronics industrial park, Hangbu Town, Shucheng County, Lu'an City, Anhui Province Patentee after: Anhui jingzhuo optical display technology Co.,Ltd. Address before: Room 615, 28 High-tech Second Road, Nanchang High-tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: Jiangxi Huiguang Microelectronics Co.,Ltd. |