CN106066732A - Touch screen and touch display unit - Google Patents
Touch screen and touch display unit Download PDFInfo
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- CN106066732A CN106066732A CN201610371675.6A CN201610371675A CN106066732A CN 106066732 A CN106066732 A CN 106066732A CN 201610371675 A CN201610371675 A CN 201610371675A CN 106066732 A CN106066732 A CN 106066732A
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- touch
- control structure
- touch screen
- underlay substrate
- articulamentum
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- Human Computer Interaction (AREA)
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- General Physics & Mathematics (AREA)
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Abstract
The present invention is about a kind of touch screen and touch display unit, belongs to touch Display Technique field.Described touch screen includes underlay substrate, multiple touch-control structures of array arrangement it are formed with on underlay substrate, each touch-control structure in multiple touch-control structures includes: drive electrode and induction electrode, and the piezoelectric sensing layer electrically connected with drive electrode and induction electrode respectively, each touch-control structure is micro-electromechanical system (MEMS) touch-control structure.The present invention solves the problem that the precision of touch control is relatively low, improves the precision of touch control.The present invention is used for touch display panel.
Description
Technical field
The present invention relates to touch Display Technique field, particularly to a kind of touch screen and touch display unit.
Background technology
Along with the development of touch Display Technique, touch display unit has obtained widely should in the production and life of people
With.Touch display unit includes that touch screen, display screen and touch-control integrated circuit are (English: integrated circuit；It is called for short:
IC), touch-control IC electrically connects with touch screen and display screen respectively.
In correlation technique, touch screen includes underlay substrate, and underlay substrate is formed multiple touch-control structures of array arrangement,
Each touch-control structure can include each drive electrode on drive electrode and induction electrode, and this touch screen and each faradism
The most all electrically connect with touch-control IC.When using this touch display unit, touch-control IC can be controlled defeated to each drive electrode successively
Enter and drive signal, and gather the induced signal on each induction electrode.Example, if touch-control IC is (concrete from a certain touch-control structure
The induction electrode in touch-control structure) on the induced signal that collects identical with predetermined inductive signal, then may determine that user not
Touch the region on the touch screen that this touch-control structure is corresponding；If the induced signal that touch-control IC collects from a certain touch-control structure with
Predetermined inductive signal is different, then may determine that user touches the region on the touch screen that this touch-control structure is corresponding.That is, touch-control
By judging that the induced signal collected from touch-control structure is the most identical with preset signals, IC can determine that touch-control structure is corresponding
Touch screen on region whether touched by user, and then determine region handled by user on this touch screen, control display
Screen shows corresponding image.
Owing to, in correlation technique, the volume of touch-control structure is relatively big, the area in the region on touch screen that touch-control structure is corresponding
The biggest, whether a certain area large area that touch-control IC is merely capable of determining on touch screen is touched by user, therefore, touches control
The precision of system is relatively low.
Summary of the invention
The problem relatively low in order to solve the precision of touch control, the invention provides a kind of touch screen and touches display dress
Put.Described technical scheme is as follows:
First aspect, it is provided that a kind of touch screen, described touch screen includes underlay substrate, described underlay substrate is formed
Multiple touch-control structures of array arrangement,
Each touch-control structure in the plurality of touch-control structure includes: drive electrode and induction electrode, and respectively with institute
Stating drive electrode and the piezoelectric sensing layer of described induction electrode electrical connection, described each touch-control structure is that micro-electromechanical system (MEMS) touches
Control structure.
Optionally, described underlay substrate is formed with articulamentum；
It is formed with on the underlay substrate of described articulamentum the multiple touch-control structures being formed with described array arrangement；
Wherein, described articulamentum is for being fixed on described underlay substrate by described each touch-control structure.
Optionally, the piezoelectric sensing layer in described each touch-control structure include sensing layer main body and with described sensing layer master
M piezoelectric beam of body electrical connection, described m is integer, and m >=1.
Optionally, described underlay substrate is also formed with multiple traps of array arrangement, and the plurality of trap is with the plurality of
Touch-control structure one_to_one corresponding,
The orthographic projection on the trap that described touch-control structure is corresponding of n the piezoelectric beam in described each touch-control structure, is positioned at institute
Stating in the trap that touch-control structure is corresponding, described n is integer, n >=1, and n≤m.
Optionally, described underlay substrate being also formed with color blocking layer, described color blocking layer includes multiple color blockings of array arrangement
Block；
It is formed on the underlay substrate of described color blocking layer and is formed with described articulamentum；
Wherein, the orthographic projection on described articulamentum of each color blocking block in the plurality of color blocking block, with p described touch-control
Structure orthographic projection on described articulamentum is corresponding, and described p is integer, and p >=2.
Optionally, described articulamentum includes adhesive linkage and is formed at the supporting layer on described adhesive linkage, described adhesive linkage
Material be silicon nitride, the material of described supporting layer is polysilicon.
Optionally, described drive electrode is identical with the material of described induction electrode, and is gold, silver or aluminum.
Optionally, the material of described piezoelectric sensing layer is lead titanate piezoelectric ceramics.
Optionally, described m and n is equal to 2.
Second aspect, it is provided that a kind of touch display unit, described touch display unit includes: touching described in first aspect
Touch screen.
In sum, a kind of touch screen and touch display unit, the substrate in this touch screen are embodiments provided
Being formed with multiple touch-control structure on substrate, each touch-control structure includes drive electrode and induction electrode, and electric with driving respectively
The piezoelectric sensing layer that pole is connected with induction electrode, on drive electrode can with input drive signal, and user do not touch this touch
Touching screen and user when touching this touch screen, the induced signal that the induction electrode on this touch screen collects is different, namely permissible
According to the difference of the induced signal collected, determine the region touched by user on this touch screen.And multiple on this touch screen
Touch-control structure is MEMS touch-control structure, due to the small volume of MEMS touch-control structure, so corresponding the touching of each touch-control structure
The area touching region on screen is the least, so improve the precision of touch control.
It should be appreciated that it is only exemplary that above general description and details hereinafter describe, can not be limited this
Invention.
Accompanying drawing explanation
In order to be illustrated more clearly that embodiments of the invention, in describing embodiment below, the required accompanying drawing used is made
Introduce simply, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention, common for this area
From the point of view of technical staff, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of a kind of touch screen that Fig. 1 provides for the embodiment of the present invention；
The partial structurtes schematic diagram of a kind of touch screen that Fig. 2 provides for the embodiment of the present invention；
The structural representation of the another kind of touch screen that Fig. 3 provides for the embodiment of the present invention.
Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the present invention
Example, and for explaining the principle of the present invention together with description.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing the present invention made into
One step ground describes in detail, it is clear that described embodiment is only some embodiments of the present invention rather than whole enforcement
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
All other embodiments, broadly fall into the scope of protection of the invention.
As it is shown in figure 1, embodiments provide a kind of touch screen 0, touch screen 0 includes underlay substrate 01, substrate base
Multiple touch-control structures 02 of array arrangement it are formed with on plate 01.
Each touch-control structure 02 in multiple touch-control structures 02 may include that drive electrode A and induction electrode B, Yi Jifen
The piezoelectric sensing layer C not electrically connected with drive electrode A and induction electrode B, each touch-control structure 02 be MEMS (English:
MEMS；English: Micro-Electro-Mechanical System) touch-control structure.Example, the q region in figure is p region
Schematic cross-section.
In sum, owing to, in the touch screen that the embodiment of the present invention provides, underlay substrate being formed with multiple touch-control structure,
Each touch-control structure includes drive electrode and induction electrode, and the piezoelectricity being connected with drive electrode and induction electrode respectively passes
Sense layer, drive electrode with input drive signal, and when user does not touches this touch screen and user touches this touch screen, can be somebody's turn to do
The induced signal that collects on induction electrode on touch screen is different, namely can according to the difference of the induced signal collected,
Determine the region touched by user on this touch screen.And the multiple touch-control structures on this touch screen are MEMS touch-control structure, by
In the small volume of MEMS touch-control structure, so the area in the region on touch screen corresponding to each touch-control structure is the least, institute
To improve the precision of touch control.
Concrete, drive electrode A can be identical with the material of induction electrode B, and be electric conductivity preferably gold (be called for short:
AU), silver or aluminum, the material of piezoelectric sensing layer C can be lead titanate piezoelectric ceramics (English: piezoelectric ceramic
transducer；It is called for short: PZT).The partial structurtes schematic diagram of a kind of touch screen that Fig. 2 provides for the embodiment of the present invention, needs
Bright, Fig. 2 is illustrated that the structural representation in the region in the touch screen that touch-control structure is corresponding.
On the basis of Fig. 1, underlay substrate 01 could be formed with articulamentum 03；It is formed with the underlay substrate of articulamentum 03
Multiple touch-control structures (not marking in Fig. 2) of array arrangement it are formed with on 01, namely except underlay substrate 01 and articulamentum 03 in Fig. 2
Part in addition, belongs to a touch-control structure.Example, articulamentum 03 may be used for each touch-control structure is fixed on substrate
On substrate 01, articulamentum 03 can include adhesive linkage and the supporting layer being formed on adhesive linkage, namely articulamentum 03 can be by
The adhesive linkage being superimposed and supporting layer composition, the material of adhesive linkage can be that silicon nitride (is called for short: Si3N4), the material of supporting layer
Matter can be polysilicon.Owing to articulamentum 03 is formed on underlay substrate 01, articulamentum 03 is formed with multiple touch-control structure, and
This articulamentum 03 can respectively with underlay substrate 01 and touch-control structure compact siro spinning technology, thus realize touch-control structure effectively solid
It is scheduled on underlay substrate 01.
Example, the piezoelectric sensing layer in each touch-control structure can include sensing layer main body C1 and with sensing layer main body
M the piezoelectric beam C2, m of C1 electrical connection are integer, and m >=1.In the embodiment of the present invention as a example by m is equal to 2, in actual application, m
Can also be for other integers more than or equal to 1, this is not construed as limiting by the embodiment of the present invention.Owing to piezoelectric sensing layer includes m
Piezoelectric beam C2.When touch screen 0 is touched, sensing layer main body C1 in piezoelectric sensing layer is pressed, and sensing layer main body C1 can be sent out
Raw deformation so that the upper electrical property feature of piezoelectric sensing layer changes, and owing to the piezoelectric beam C2 in piezoelectric sensing layer can be
Vibrate under the effect that sensing layer main body deforms upon, further increase electrical changing features on this piezoelectric sensing layer
Degree, the induced signal collected from induction electrode B differs greatly with predetermined inductive signal.
Further, underlay substrate 01 can also be formed with multiple trap D of array arrangement, and can phase on articulamentum 03
The through hole being formed with multiple array arrangement answered, each trap D orthographic projection on articulamentum 03 is positioned at the through hole on articulamentum 03
In.Multiple trap D on underlay substrate can be with the multiple touch-control structure one_to_one corresponding in underlay substrate, in each touch-control structure
N piezoelectric beam C2 orthographic projection on the trap D that touch-control structure is corresponding, being positioned at touch-control structure corresponding trap D, n is integer, n >=
1, and n≤m, in the embodiment of the present invention, as a example by the orthographic projection on trap of two piezoelectric beams is respectively positioned in trap.Due to underlay substrate
Being formed with multiple trap D on 01, when piezoelectric beam C2 is in vibration, the vibration of piezoelectric beam C2 will not be played prevention and make by underlay substrate 01
With, the Oscillation Amplitude being effectively guaranteed piezoelectric beam C2 is bigger, it is ensured that the induced signal collected and predetermined inductive signal
Differ greatly.
It should be noted that the touch screen that the embodiment of the present invention provides can also include array base palte and the coloured silk being oppositely arranged
Film substrate, and the liquid crystal between array base palte and color membrane substrates, the underlay substrate in the embodiment of the present invention can be placed in
The light emission side of color membrane substrates, and this articulamentum and touch-control structure all can be arranged on this underlay substrate away from the one of color membrane substrates
Side.All can be provided with pad on drive electrode in each touch-control structure and induction electrode, thus further make touch-control
Structure can effectively be fixed in touch screen.
The structural representation of the another kind of touch screen 0 that Fig. 3 provides for the embodiment of the present invention, as it is shown on figure 3, underlay substrate 01
On be also formed with color blocking layer 04, color blocking layer 04 can include multiple color blocking blocks 041 of array arrangement, example, the plurality of color blocking
Block 041 can include red color resistance block, green color blocking block and blue color blocking block；It is formed on the underlay substrate 01 of color blocking layer 041
Could be formed with articulamentum 03；Wherein, the orthographic projection on articulamentum 03 of each color blocking block 041 in multiple color blocking blocks 041, with
The orthographic projection on articulamentum 03 of p touch-control structure 02 is corresponding, and example, p can be integer, and p >=2.With one in Fig. 3
The color blocking block 041 orthographic projection on articulamentum 03, corresponding with the orthographic projection on articulamentum 03 of 4 touch-control structures 02 as a example by,
Namely in Fig. 3 as a example by p is 4, in actual application, p can also be for other integers more than or equal to 2, the embodiment of the present invention pair
This is not construed as limiting.
In correlation technique, the corresponding touch-control structure of colour cell block (namely the face on a color blocking block correspondence touch screen
Long-pending identical with the area on a corresponding touch screen of touch-control structure), in the embodiment of the present invention, owing to touch-control structure is MEMS touch-control
Structure so that the small volume of this touch-control structure, therefore, each colour cell block can touch with at least two being formed on colour cell block
Control structure correspondence (namely the face on the area touch screen corresponding with at least two touch-control structure on a colour cell block correspondence touch screen
Long-pending identical), improve the precision of touch-control.It should be noted that in actual application, owing to the volume of MEMS touch-control structure is far
Less than the volume of the touch-control structure in correlation technique, therefore, each colour cell block can be with the more number being formed on colour cell block
Touch-control structure corresponding.
Further, since be formed with color blocking layer 04 on underlay substrate 01, it is possible to learn that this underlay substrate 01 is for color film base
Plate, touch-control structure 02 is formed on color membrane substrates so that the thinner thickness of touch screen 0.Further, this touch screen 0 is all right
Including the array base palte (not shown in Fig. 3) being oppositely arranged with color membrane substrates, and between array base palte and color membrane substrates
Liquid crystal (not shown in Fig. 3).
When the touch screen using the embodiment of the present invention to provide, can input to the drive electrode in each touch-control structure
Driving signal, owing to piezoelectric sensing layer can conduct electricity, and piezoelectric sensing layer is set up with drive electrode and induction electrode respectively and is had
Electrical connection, therefore, the driving signal on drive electrode can input to piezoelectric sensing layer, and piezoelectric sensing layer can be according to this driving
Signal inputs induced signal to induction electrode.
When user does not touches a certain region on touch screen, owing to this piezoelectric sensing layer is not affected by extruding and shape does not occurs
Become, so this piezoelectric sensing layer is predetermined inductive signal according to the induced signal driving signal to obtain, the touch-control that this region is corresponding
The induced signal collected on induction electrode in structure is predetermined inductive signal；The a certain region on touch screen is touched user
Time, there occurs deformation owing to this piezoelectric sensing layer receives extruding, the electrical property feature of this piezoelectric sensing layer there occurs change, institute
Different from predetermined inductive signal according to the induced signal driving signal to obtain with this piezoelectric sensing layer, that this region is corresponding touch-control knots
The induced signal collected on induction electrode in structure is different from predetermined inductive signal.Further, due at this piezoelectric sensing
Layer receives extruding when deforming upon, and the sensing layer main body in this piezoelectric sensing layer there occurs deformation, and drives this piezoelectric sensing layer
In piezoelectric beam vibrate so that the degree that the electrical property feature of this piezoelectric sensing layer changes is relatively big, this piezoelectric sensing layer according to
The induced signal that driving signal inputs to induction electrode differs greatly with predetermined inductive signal.
After induction electrode from touch-control structure collects induced signal, owing to the induced signal collected is with default
Induced signal is different, and with the differing greatly of predetermined inductive signal, therefore, it can quickly determine corresponding the touching of this touch-control structure
The region touched on screen is touched by user.Further, after the induction electrode from touch-control structure collects induced signal, also
Can be amplified the induced signal collected processing, namely induced signal be processed the amplitude so that induced signal relatively
Greatly such that it is able to easier judge that the induced signal collected is the most identical with predetermined inductive signal.
In sum, owing to, in the touch screen that the embodiment of the present invention provides, underlay substrate being formed with multiple touch-control structure,
Each touch-control structure includes drive electrode and induction electrode, and the piezoelectricity being connected with drive electrode and induction electrode respectively passes
Sense layer, drive electrode with input drive signal, and when user does not touches this touch screen and user touches this touch screen, can be somebody's turn to do
The induced signal that collects on induction electrode on touch screen is different, namely can according to the difference of the induced signal collected,
Determine the region touched by user on this touch screen.And the multiple touch-control structures on this touch screen are MEMS touch-control structure, by
In the small volume of MEMS touch-control structure, so the area in the region on touch screen corresponding to each touch-control structure is the least, institute
To improve the precision of touch control.
Embodiments providing a kind of touch display unit, this touch display unit may include that Fig. 1, Fig. 2 or figure
Touch screen shown in 3.
Example, this touch display unit can be: Electronic Paper, mobile phone, panel computer, television set, notebook computer, number
Code-phase frame, navigator etc. are any has product or the parts touching display function.
In sum, owing to, in the touch screen that the embodiment of the present invention provides, underlay substrate being formed with multiple touch-control structure,
Each touch-control structure includes drive electrode and induction electrode, and the piezoelectricity being connected with drive electrode and induction electrode respectively passes
Sense layer, drive electrode with input drive signal, and when user does not touches this touch screen and user touches this touch screen, can be somebody's turn to do
The induced signal that collects on induction electrode on touch screen is different, namely can according to the difference of the induced signal collected,
Determine the region touched by user on this touch screen.And the multiple touch-control structures on this touch screen are MEMS touch-control structure, by
In the small volume of MEMS touch-control structure, so the area in the region on touch screen corresponding to each touch-control structure is the least, institute
To improve the precision of touch control.
Those skilled in the art, after considering description and putting into practice invention disclosed herein, will readily occur to its of the present invention
Its embodiment.The application is intended to any modification, purposes or the adaptations of the present invention, these modification, purposes or
Person's adaptations is followed the general principle of the present invention and includes the undocumented common knowledge in the art of the present invention
Or conventional techniques means.Description and embodiments is considered only as exemplary, and true scope and spirit of the invention are wanted by right
Ask and point out.
It should be appreciated that the invention is not limited in precision architecture described above and illustrated in the accompanying drawings, and
And various modifications and changes can carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (10)
1. a touch screen, it is characterised in that described touch screen includes underlay substrate, described underlay substrate is formed array row
Multiple touch-control structures of cloth,
Each touch-control structure in the plurality of touch-control structure includes: drive electrode and induction electrode, and drives with described respectively
Moving electrode and the piezoelectric sensing layer of described induction electrode electrical connection, described each touch-control structure is micro-electromechanical system (MEMS) touch-control knot
Structure.
Touch screen the most according to claim 1, it is characterised in that
It is formed with articulamentum on described underlay substrate；
It is formed with on the underlay substrate of described articulamentum the multiple touch-control structures being formed with described array arrangement；
Wherein, described articulamentum is for being fixed on described underlay substrate by described each touch-control structure.
Touch screen the most according to claim 1, it is characterised in that
Piezoelectric sensing layer in described each touch-control structure includes sensing layer main body and the m electrically connected with described sensing layer main body
Individual piezoelectric beam, described m is integer, and m >=1.
Touch screen the most according to claim 3, it is characterised in that be also formed with array arrangement on described underlay substrate many
Individual trap, and the plurality of trap and the plurality of touch-control structure one_to_one corresponding,
The orthographic projection on the trap that described touch-control structure is corresponding of n the piezoelectric beam in described each touch-control structure, is positioned at described touching
In the trap that control structure is corresponding, described n is integer, n >=1, and n≤m.
Touch screen the most according to claim 2, it is characterised in that
Being also formed with color blocking layer on described underlay substrate, described color blocking layer includes multiple color blocking blocks of array arrangement；
It is formed on the underlay substrate of described color blocking layer and is formed with described articulamentum；
Wherein, the orthographic projection on described articulamentum of each color blocking block in the plurality of color blocking block, with p described touch-control structure
Orthographic projection on described articulamentum is corresponding, and described p is integer, and p >=2.
Touch screen the most according to claim 2, it is characterised in that
Described articulamentum includes adhesive linkage and is formed at the supporting layer on described adhesive linkage, and the material of described adhesive linkage is nitridation
Silicon, the material of described supporting layer is polysilicon.
Touch screen the most according to claim 1, it is characterised in that
Described drive electrode is identical with the material of described induction electrode, and is gold, silver or aluminum.
Touch screen the most according to claim 1, it is characterised in that
The material of described piezoelectric sensing layer is lead titanate piezoelectric ceramics.
Touch screen the most according to claim 4, it is characterised in that
Described m and n is equal to 2.
10. a touch display unit, it is characterised in that described touch display unit includes: claim 1 to 9 is arbitrary described
Touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610371675.6A CN106066732B (en) | 2016-05-30 | 2016-05-30 | Touch screen and touch display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610371675.6A CN106066732B (en) | 2016-05-30 | 2016-05-30 | Touch screen and touch display unit |
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| CN106066732A true CN106066732A (en) | 2016-11-02 |
| CN106066732B CN106066732B (en) | 2019-01-25 |
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Cited By (1)
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| CN106681578A (en) * | 2016-12-21 | 2017-05-17 | 北京集创北方科技股份有限公司 | Touch panel, touch detection device and touch detection method |
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| CN106066732B (en) | 2019-01-25 |
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