CN106855758A - Touch display unit - Google Patents
Touch display unit Download PDFInfo
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- CN106855758A CN106855758A CN201510907537.0A CN201510907537A CN106855758A CN 106855758 A CN106855758 A CN 106855758A CN 201510907537 A CN201510907537 A CN 201510907537A CN 106855758 A CN106855758 A CN 106855758A
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- display unit
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- 239000000969 carrier Substances 0.000 claims description 2
- 230000005489 elastic deformation Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000011896 sensitive detection Methods 0.000 abstract description 3
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- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical class OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- 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
-
- 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
- G06F3/0412—Digitisers structurally integrated in a display
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Position Input By Displaying (AREA)
Abstract
The present invention relates to a kind of touch display unit; including cover sheet, touch sensing unit and display unit; the touch sensing unit is used to sense the touch signal put on cover sheet; the touch display unit also includes pressure sensitive unit; the pressure sensitive unit includes upper conductive electrode layer, the lower conductive electrode layer of the capacitive sensing device for constituting detection power; and the elastic layer between upper and lower conductive electrode layer; the pressure sensitive unit is used to sense the pressure signal put on cover sheet, and the pressure sensitive unit has light permeable.The present invention obtains the pressure signal of touch operation by way of monitoring electric capacity, multiple point touching pressure signal can simultaneously be detected, and introduce elastic layer by between the two-layer conductive electrode layer for constituting capacitive sensing device, elastic deformation can easily occur under stress using it such that it is able to realize the Sensitive Detection to touch pressure.
Description
Technical field
The present invention relates to touch-control display field, more particularly to a kind of touch with pressure sensitive function shows
Device.
Background technology
Touch-screen is because having the advantages that ease for operation, flexibility, it has also become PMC equipment and synthesis
Primary human's interactive meanses of information terminal (such as mobile phone, panel computer and super notebook computer).Phase
For resistive touch screen and the touch-screen of other manner, capacitive touch screen with low cost, simple structure and
The advantage such as durable, is gradually widely used by intelligent terminal.However, existing capacitance touch screen only perceives screen body
The touch location of place plane and operation, it is difficult to perceive and put on the touch that the pressure change in screen body surface face is brought
Parameter.
In order to be able to sense the pressure change in screen body surface face, dealer's integrated pressure sensor in touch-screen.But
Existing way can only mostly detect the touch pressure information of single-point.And be difficult to obtain touching for high position precision
Touch pressure detecting effect.
The content of the invention
Based on this, the present invention is intended to provide it is a kind of can detect multiple point touching pressure signal and accuracy of detection it is high touch
Touch display device.
A kind of touch display unit, including cover sheet, touch sensing unit and display unit, the touch
Sensing unit is used to sense the touch signal put on cover sheet, and the touch display unit also includes pressure
Power sensing unit, the upper conductive electrode layer of capacitive sensing device of the pressure sensitive unit including composition detection power,
Lower conductive electrode layer, and the elastic layer between upper and lower conductive electrode layer, the pressure sensitive unit
For sensing the pressure signal put on cover sheet, and the pressure sensitive unit has light permeable.
Wherein in one embodiment, the display unit includes liquid crystal functional layer and backlight module, the liquid
Brilliant functional layer includes the upper polaroid, optical filter, liquid crystal layer, substrate and the down polaroid that set gradually, described
Backlight module includes the upper diffusion sheet, upper prismatic lens, lower prismatic lens, lower diffusion sheet, the light guide plate that set gradually
And reflector plate.
Wherein in one embodiment, the touch sensing unit is integrated with display unit and set, the elasticity
Layer is located between cover sheet and display unit, and the pressure sensitive unit also includes carrying upper conductive electrode layer
First vector and carry the Second support of lower conductive electrode layer, the first vector and upper conductive electrode layer position
Between cover sheet and elastic layer, the Second support and lower conductive electrode layer are located at elastic layer with display list
Between unit.
Wherein in one embodiment, the touch sensing unit is located between cover sheet and display unit,
The elastic layer is located between touch sensing unit and display unit, and the pressure sensitive unit also includes carrying
The first vector of upper conductive electrode layer and the Second support of lower conductive electrode layer is carried, the first vector and upper
Conductive electrode layer is located between cover sheet and touch sensing unit, the Second support and lower conductive electrode layer
Between elastic layer and display unit.
Wherein in one embodiment, the touch sensing unit is located between cover sheet and display unit,
The elastic layer is located between cover sheet and touch sensing unit, and the pressure sensitive unit also includes carrying
The first vector of upper conductive electrode layer and the Second support of lower conductive electrode layer is carried, the first vector and upper
Conductive electrode layer is located between cover sheet and elastic layer, and the Second support and lower conductive electrode layer are located at bullet
Property layer and display unit between.
Wherein in one embodiment, the elastic layer is located at the down polaroid of the liquid crystal functional layer and described
Between backlight module, the pressure sensitive unit also includes carrying first vector and the carrying of upper conductive electrode layer
The Second support of lower conductive electrode layer, the first vector and upper conductive electrode layer are located at cover sheet with elasticity
Between layer, the Second support and lower conductive electrode layer are located between elastic layer and the backlight module.
Wherein in one embodiment, the upper diffusion sheet, upper prismatic lens, lower prismatic lens or lower diffusion sheet fill
When the Second support, the cover sheet, substrate or down polaroid serve as the first vector.
Wherein in one embodiment, the upper polaroid, optical filter or substrate serve as the Second support.
Wherein in one embodiment, the cover sheet serves as the first vector.
Wherein in one embodiment, the elastic layer includes matrix and the deformable material carried by matrix.
Wherein in one embodiment, when the elastic layer is located between cover sheet and display unit or is located at
When between cover sheet and touch sensing unit, the cover sheet serves as described matrix；When the elastic layer
When between the down polaroid and the backlight module of the liquid crystal functional layer, the down polaroid serves as institute
State matrix.
Wherein in one embodiment, the capacitive sensing device of the detection power is that self-capacitance or mutual capacitance sense
Device.
The present invention obtains the pressure signal of touch operation by way of monitoring electric capacity, constitutes for pressure signal
The capacitive sensing device of sensing can simultaneously detect multiple point touching pressure signal, and by constituting capacitive sensing device
Two-layer conductive electrode layer between introduce elastic layer, elastic deformation can easily occur under stress using it,
Capacitive sensing device so as to make detection power corresponds to touch pressure and produces sensitive capacitance variations, final real
Now to the Sensitive Detection of touch pressure.
Brief description of the drawings
The structural representation of the touch display unit that Fig. 1-10 is provided by different embodiments of the invention.
Pressure sensitive unit in the touch display unit that Figure 11-13 is provided by different embodiments of the invention
Electrode structure schematic diagram.
Specific embodiment
The touch display unit that the present invention is provided can be handed over as types such as mobile phone, panel computers with touch
The display terminal of mutual form.
The touch display unit includes cover sheet, touch sensing unit, display unit and pressure sensitive list
Unit.
Touch sensing unit includes touching driving electrodes and touch sensible electrode.Touch driving electrodes and touch and feel
Answering electrode can be distributed on same base material, such as GF structures, GF2 structures alleged by industry etc., or respectively
Two different base materials are distributed in, such as the GFF structures alleged by industry.In some other embodiments, touch
Touching driving electrodes and touch sensible electrode can also be formed in the lower surface of cover sheet and cause that cover sheet is simultaneous
Has the function of capacitance sensor, this kind of structure is referred to as OGS structures by industry.In some other embodiments,
A kind of surface that can also be formed in the substrate for fitting in cover sheet in two kinds of touch control electrodes, such as industry
G1F structures alleged by boundary.
The display unit includes liquid crystal functional layer and backlight module, and the liquid crystal functional layer includes setting gradually
Upper polaroid, optical filter, liquid crystal layer, substrate and down polaroid, the backlight module includes setting gradually
Upper diffusion sheet, upper prismatic lens, lower prismatic lens, lower diffusion sheet, light guide plate and reflector plate.The liquid crystal work(
Ergosphere also includes the pixel electrode and public electrode for driving liquid crystal layer.Alleged by the present invention " on ", D score
Be for close with the user degree in application process of touch display unit, it is relatively close to use
The side of person for " on ", be relatively distant from user side be D score.The lower surface of such as cover sheet is
Refer to side of the cover sheet away from user.
In some other embodiments, touch driving electrodes and touch sensible electrode in touch sensing unit
Can integrate and be arranged in display unit, for example, be incorporated into liquid crystal layer (the structure quilt of above-mentioned touch sensing unit
Industry is referred to as in-cell structures), or it is described touch driving electrodes and touch sensible electrode be arranged on upper polaroid
And optical filter between (structure of above-mentioned touch sensing unit is referred to as on-cell structures by industry).
The driving electrodes and touch sensible electrode of touching are used to sense the touch letter put on cover sheet
Number.The touch signal includes being touched parallel to the contact on the two-dimensional directional of cover sheet, slip, dragging etc.
Input signal is touched, or even including every empty input signal, (i.e. suspension touch control is believed on cover sheet direction
Number) or cover sheet edge side (for example bending the arc-shaped side edges of screen) touch input signal.
The pressure sensitive unit is used to sense the pressure signal put on cover sheet.The pressure sensitive
Unit includes the upper conductive electrode layer and lower conductive electrode layer of the capacitive sensing device for constituting detection power, and is located at
Elastic layer between upper and lower conductive electrode layer.
The upper conductive electrode layer and lower conductive electrode layer for constituting some capacitive sensing devices of detection power are transparent leading
Electric material is constituted, such as ITO, ZnO, CNT, Graphene；Can also be by nontransparent conductive material
Constitute, now need to realize the aobvious of touch display unit described in eye-observation by controlling the size of conductive material
Do not influenceed by these conductive electrode layers when showing content.Above-mentioned conductive material can be conductive silver paste, Nano Silver
Silk, conducting metal particles or other conductive particles.
Conductive electrode layer in the capacitive sensing device of the detection power is made up of electrod-array；Upper conductive electrode layer
Electrod-array and lower conductive electrode layer electrod-array can by a plurality of separate strip shaped electric poles or by
The a plurality of chain for being connected with multiple electrodes block or separate block type electrode are constituted；The upper conductive electrode
There is certain face in the projection of the electrod-array of layer and the electrod-array of lower conductive electrode layer in horizontal two-dimension plane
Long-pending intersection region, so as to form some capacitive sensing devices that can be used to detect power.
The pressure sensitive unit also includes carrying the first vector of upper conductive electrode layer and carries lower conductive electrode
The Second support of layer.First vector, Second support can be made up of independent transparent plate body, such as glass plate,
PET sheet, PC plate.In certain embodiments, first vector, Second support are also dependent on pressure sensitive unit
Specific set location served as by the other structures in the touch display unit, for example cover sheet may act as
The first vector, the upper diffusion sheet, upper prismatic lens, lower prismatic lens, lower diffusion sheet, upper polaroid,
Optical filter or substrate each act as the Second support.
The elastic layer can be believed by when touching and pressing on the surface of the touch display unit according to the force value for touching
Breath and touch location produce corresponding elastic compression, and can recover to first when touching pressing and removing Descemet's membrane
The state of beginning is recovered extremely close to initial state.When the touch display unit is pressed power,
At the position of applying power, because elastic layer is compressed, the upper conductive electrode of the capacitive sensing device of detection power is constituted
Layer can reduce with the distance between lower conductive electrode layer, and its reduction degree is in the force value for being applied
Corresponding relation.Therefore can be by detecting that the capacitance variations of foregoing capacitive sensing device are realized to touching display dress
The detection of the touch pressure put.
Specifically, after touch display unit stress, the distance between upper conductive electrode layer and lower conductive electrode layer
Can be produced as pressure is different and diminished to some extent.Computing formula C=ε S/4 π kd according to electric capacity, institute's shape
Into the capacitance of capacitive sensing device mutually strain greatly.Because touch force different on touch display unit makes touch
Each position of display device can produce corresponding strain, and then produce the change of corresponding d values.Therefore,
The electricity of some capacitive sensing devices formed in pressure sensitive unit foregoing in touch display unit can be set up
Hold the correlation database by force information of change information and touch display unit.In actual applications, institute
Stating also includes memory and processor in touch display unit, is stored with touch display unit in memory
Diverse location carry out under different force value touch, each capacitive sensing device of power being detected in touch display unit
Capacitance variation information, processor is used to contrast some capacitive sensing devices that touch display unit detection is obtained
Capacitance variation information and the capacitance variation information being pre-stored, so as to judge the pressure information of touch display unit.
Wherein pressure information includes the size of the power for touching, it is also possible to the position including touch force.
It is similar with capacitance-type touch screen technology in specific capacitance detecting, can divide from the side held with mutual tolerance
Method.From in appearance method, the electrode ground connection in upper conductive electrode layer or lower conductive electrode layer is pressed in touch
When pressure pressure is detected, the electrode of the ungrounded conductive electrode layer of touch display unit direct detection and leading for being grounded
Electric capacity between the electrode of electric electrode layer.Additionally, can further being extended into this kind of method, " class is held certainly
Method ", i.e., the electrode of the foregoing described conductive electrode layer with touch display unit with ground differs to be set to and connects
Ground, or in a certain other fixed potentials.Now, the electricity of touch display unit institute direct detection
Hold the electric capacity for being some capacitance sensors that upper conductive electrode is constituted with lower conductive electrode.From hold method or
In " method of the class from holding ", upper conductive electrode layer can be driven by single-ended inducing method.
In the detection method of mutual tolerance, touch display unit can be by the electrode of the upper conductive electrode layer of driving simultaneously
Sensing signal is carried out by the electrode of lower conductive electrode layer, or touch display unit can be by leading under driving
The electrode of the electric electrode layer and electrode by upper conductive electrode layer carries out sensing signal.In this kind of method, touch
The electric capacity for touching display device institute direct detection is some electric capacity biography that conductive electrode is constituted with lower conductive electrode
The electric capacity of sensor.Further, in the detection method of mutual tolerance, touch display unit can pass sequentially through drive
Move a certain electrode in upper conductive electrode layer and entered by other electrodes by driving electrodes in upper conductive electrode layer
Row sensing signal, and the electrode electrode for reference only of lower conductive electrode layer.Now, touch display unit institute
The electric capacity of direct detection is the driving electrodes of upper conductive electrode layer and the capacitance signal of induction electrode, but the electricity
Hold the electric capacity letter that signal is embodied between the electrode of conductive electrode layer and the electrode of lower conductive electrode layer indirectly
Breath.When touch display unit is pressed by touch, the electricity of the electrode of upper conductive electrode layer and lower conductive electrode layer
Capacitance information between pole changes, the driving electricity in the upper conductive electrode layer that touch display unit is detected
Electric capacity between pole and induction electrode changes simultaneously.Wherein, in foregoing mutual tolerance detection, described is upper
Conductive electrode layer can be substituted by lower conductive electrode layer, that is, descend the electrode of conductive electrode layer as driving electrodes and
Induction electrode, while reference electrode of the electrode of upper conductive electrode layer as lower conductive electrode layer.
The elastic layer includes matrix and the deformable material carried by matrix.Described matrix can be by independent
Transparent plate body is constituted, such as glass plate, PET sheet, PC plate.In certain embodiments, matrix also dependent on
The specific set location of pressure sensitive unit is served as by the other structures in the touch display unit, for example when
The elastic layer is located between cover sheet and display unit or between cover sheet and touch sensing unit
When, the cover sheet may act as described matrix；When the elastic layer is located at the lower inclined of the liquid crystal functional layer
When between mating plate and the backlight module, the down polaroid may act as described matrix.
The deformable material can be layer of silica gel, rubber layer, acrylic acid series glue-line, sol layer.Deformation material
The basic structure of the bed of material can be column, centrum, round estrade, hemisphere or random blocks etc..Deformation
Material layer can also be made up of porous material, such as can for foam sponge layer, porous plastics layer, porous polyester layer,
Porous polypropylene layer, foam glue-line etc..
Deformable material can pass through the light in light display unit in macroscopically optically transparent characteristic,
Premised on being shown by the content of touch display unit described in without prejudice to.When deformable material by silica gel, rubber,
When acrylic acid series glue, colloidal sol etc. are made, deformable material can be rendered as the point-like of array-like, wire structure
Make, it is also possible to be rendered as the construction in whole face.When deformable material is made up of nontransparent or trnaslucent materials,
The width of point-like, the size of linear structure and point columnar structure or linear structure is then rendered as in 10-150 microns
Between, highly between 1-100 microns.
In certain embodiments, the touch sensing unit is integrated with display unit and set, for example, constituting industry
During in-cell structures or on-cell structures alleged by boundary, or touch sensing unit is combined setting with cover sheet
Constitute OGS structures when, the elastic layer be located between cover sheet and display unit, the first vector and
Upper conductive electrode layer is located between cover sheet and elastic layer, and the Second support and lower conductive electrode layer are located at
Between elastic layer and display unit.
In some other embodiments, the touch sensing unit is located between cover sheet and display unit,
During the structures such as GF structures, GF2 structures, GFF structures, G1F structures for example alleged by composition industry, institute
State elastic layer be located between touch sensing unit and display unit, the first vector and upper conductive electrode layer position
Between cover sheet and touch sensing unit, the Second support and lower conductive electrode layer be located at elastic layer with
Between display unit.
In certain embodiments, the touch sensing unit is located between cover sheet and display unit, for example
During the structures such as GF structures, GF2 structures, GFF structures, G1F structures alleged by composition industry, the bullet
Property layer be located between cover sheet and touch sensing unit, the first vector and upper conductive electrode layer are located to be protected
Between protecting cover plate and elastic layer, the Second support and lower conductive electrode layer be located at elastic layer and display unit it
Between.
In certain embodiments, the elastic layer is located at the down polaroid and the backlight of the liquid crystal functional layer
Between module, the first vector and upper conductive electrode layer are located between cover sheet and elastic layer, and described the
Two carriers and lower conductive electrode layer are located between elastic layer and the backlight module.
Some embodiments of the present invention are described further again below with reference to accompanying drawing.
As shown in figure 1, the touch display unit that first embodiment of the invention is provided includes cover sheet 10, pressure
Power sensing unit 20, touch sensing unit 40 and display unit 30.Wherein touch sensing unit 40 with display
Unit 30 is integrated and set.Pressure sensitive unit 20 includes upper conductive electrode layer 21, the and of lower conductive electrode layer 23
Elastic layer 22 between upper conductive electrode layer 21, lower conductive electrode layer 23.Upper conductive electrode layer 21 sets
The lower surface of cover sheet 10 is placed in, namely the first vector of upper conductive electrode layer 21 is filled by cover sheet 10
When.Lower conductive electrode layer 23 is carried by an independent Second support 230, and by optical cement layer 301 with it is aobvious
Show that unit 30 is engaged.
As shown in Fig. 2 the class in the touch display unit and first embodiment of second embodiment of the invention offer
Seemingly, it is that lower conductive electrode layer 23 is formed in Second support 230 in first embodiment in place of both differ
Upper surface, and in second embodiment, lower conductive electrode layer 23 is formed in the lower surface of Second support 230.
As shown in figure 3, in the touch display unit and first embodiment of third embodiment of the invention offer
It is similar, including cover sheet 10, pressure sensitive unit 20, touch sensing unit 40 and display unit 30.
Wherein touch sensing unit 40 is integrated with display unit 30 and set.Difference is, in the present embodiment
The Second support of lower conductive electrode layer 23 is served as by the dependency structure in display unit 30, for example, lower conduction
Electrode layer 23 is arranged on the surface of upper polaroid.
As shown in figure 4, the class in the touch display unit and 3rd embodiment of fourth embodiment of the invention offer
Seemingly, difference is that the lower conductive electrode layer 23 in the present embodiment is arranged on the upper inclined of display unit 30
Between mating plate 31 and optical filter 32, the Second support of lower conductive electrode layer 23 is served as by optical filter 32.
As shown in figure 5, the touch display unit that fifth embodiment of the invention is provided includes cover sheet 10, pressure
Power sensing unit 20, touch sensing unit 40 and display unit 30.Pressure sensitive unit 20 includes upper conduction
Electrode layer 21, lower conductive electrode layer 23 and between upper conductive electrode layer 21, lower conductive electrode layer 23
Elastic layer 22.Upper conductive electrode layer 21 is arranged at the lower surface of cover sheet 10, namely upper conductive electrode layer
21 first vector is served as by cover sheet 10.Lower conductive electrode layer 23 is by an independent Second support 230
Carry, and engaged with touch sensing unit 40 by optical cement layer (not shown).Touch sensing unit 40
Also engaged with display unit 30 by other optical cement layer (not shown).
As shown in fig. 6, the touch display unit that sixth embodiment of the invention is provided includes the protection for setting gradually
Cover plate 10, touch sensing unit 40, pressure sensitive unit 20 and display unit 30.Pressure sensitive unit 20
Including upper conductive electrode layer 21, lower conductive electrode layer 23 and positioned at upper conductive electrode layer 21, lower conductive electrode
Elastic layer 22 between layer 23.Upper conductive electrode layer 21 is carried by an independent first vector 210, and is borrowed
Optical cement layer (not shown) is helped to be engaged with touch sensing unit 40.Lower conductive electrode layer 23 is by independent one
Second support 230 is carried, and is engaged with display unit 30 by optical cement layer 301.
As shown in fig. 7, the base in the touch display unit and sixth embodiment of seventh embodiment of the invention offer
This is identical, and difference is that the upper conductive electrode layer 21 in the present embodiment is not separately provided the first load
Body, but using the related base material of the touch electrode in touch sensing unit 40 or induction electrode as first vector.
As shown in figure 8, the touch display unit that eighth embodiment of the invention is provided includes cover sheet 10, touches
Touch sensing unit 40, pressure sensitive unit 20 and display unit 30.Pressure sensitive unit 20 includes setting successively
First vector 210, upper conductive electrode layer 21, elastic layer 22, lower conductive electrode layer 23 and the Second support put
230.Wherein first vector 210, upper conductive electrode layer 21 are located at cover sheet 10 and touch sensing unit 40
Between.Second support 230 is engaged by optical cement layer 301 with display unit 30.Upper conductive electrode layer 21
Can also be engaged by optical cement layer (not shown) with cover sheet 10, except the interlayer engagement for directly making formation
Outward, can be engaged by optical cement layer at the bonding layer that other are not shown, this is not repeated.
As shown in figure 9, the touch display unit that ninth embodiment of the invention is provided includes cover sheet 10, touches
Touch sensing unit (not shown), pressure sensitive unit 20 and display unit 30.Touch sensing unit can be with position
Between cover sheet 10 and display unit 30, can also be integrated with display unit 30 and set.Display unit 30
Including the liquid crystal functional layer with liquid crystal layer 33, substrate 34 and down polaroid 35, and backlight module 36.
Pressure sensitive unit 20 includes that upper conductive electrode layer 21, elastic layer 22, lower conductive electrode layer 23 and second are carried
Body 230.Lower conductive electrode layer 23 and Second support 230 are arranged between elastic layer 22 and backlight module 36.
Upper conductive electrode layer 21 serves as first vector with substrate 34 or down polaroid 35.
As shown in Figure 10, the base in tenth embodiment of the invention is provided touch display unit and the 9th embodiment
This is identical, and difference is that lower conductive electrode layer 23 is not provided with independent Second support, but with backlight
Dependency structure in module 36 is Second support, for example can by the upper diffusion sheet in backlight module 36, on
Prismatic lens, lower prismatic lens or lower diffusion sheet serve as the Second support.
Figure 11 and Figure 12 are the conduction of some capacitive sensing devices of composition detection power in the touch display unit
A kind of electrode schematic diagram of electrode layer, so that Figure 11 is upper conductive electrode layer as an example, if upper conductive electrode layer includes
The conductive electrode 211 of dry strip, these conductive electrodes 211 are formed in first vector 210.It is with Figure 12
As a example by lower conductive electrode layer, lower conductive electrode layer includes the conductive electrode 231 of some strips, these conductive electrodes
231 are formed on Second support 230.Conductive electrode 211,231 is arranged perpendicularly, flat in horizontal two-dimension
There is the intersection region of certain area in the projection in face, thus can form some capacitive sensings for detecting power
Device.The detection of the capacitance of the capacitive sensing device for being formed and the test mode phase of existing capacitive touch screen
Together.
Conductive electrode can also be other shapes, and as shown in Figure 13, conductive electrode 211 is rendered as by a plurality of
It is connected with the chain of multiple electrodes block.These electrode blocks in array be distributed, its shape can for square, prismatic,
Circular or other irregular bulks.When the conductive electrode layer shown in Figure 12 be upper conductive electrode layer when, under lead
Electric electrode layer can be the conductive electrode in whole face, and certainly lower conductive electrode layer can also have with upper conductive electrode layer
There is identical electrode pattern.
The conductive electrode layer of the capacitive sensing device of the detection power can be by modes such as sputtering, evaporation, printings
It is produced on transparent base material, on such as PET, PC, glass transparent thin-film material.The electricity of conductive electrode layer
Pole figure case can be etched by ITO film, the upper silk-screened conductive slurries of PET are obtained, or use metal grill
(metal-mesh) technique is obtained.
Additionally, the record in above-described embodiment, the conductive electrode layer of the capacitive sensing device of the detection power
Can also directly be produced on the lower surface of the substrate of the liquid crystal functional layer of display unit, polaroid, diffusion sheet,
The substrate surfaces such as prismatic lens, you can conductive layer, then the electricity for making capacitive sensing device are plated/sputtered on base material with elder generation
Pole figure case.
The present invention obtains the pressure signal of touch operation by way of monitoring electric capacity, constitutes for pressure signal
The capacitive sensing device of sensing can simultaneously detect multiple point touching pressure signal, and by constituting capacitive sensing device
Two-layer conductive electrode layer between introduce elastic layer, elastic deformation can easily occur under stress using it,
Capacitive sensing device so as to make detection power corresponds to touch pressure and produces sensitive capacitance variations, final real
Now to the Sensitive Detection of touch pressure.
Each technical characteristic of embodiment described above can be combined arbitrarily, not right to make description succinct
The all possible combination of each technical characteristic in above-described embodiment is all described, as long as however, these skills
The combination of art feature does not exist contradiction, is all considered to be the scope of this specification record.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed,
But can not therefore be construed as limiting the scope of the patent.It should be pointed out that for this area
For those of ordinary skill, without departing from the inventive concept of the premise, some deformations can also be made and changed
Enter, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be defined.
Claims (12)
1. a kind of touch display unit, including cover sheet, touch sensing unit and display unit, it is described to touch
Touch sensing unit for sense the touch signal that puts on cover sheet, it is characterised in that the touch is aobvious
Showing device also includes pressure sensitive unit, and the pressure sensitive unit includes constituting the capacitive sensing device of detection power
Upper conductive electrode layer, lower conductive electrode layer, and the elastic layer between upper and lower conductive electrode layer,
The pressure sensitive unit is used to sense the pressure signal put on cover sheet, and the pressure sensitive list
Unit has light permeable.
2. touch display unit according to claim 1, it is characterised in that the display unit includes
Liquid crystal functional layer and backlight module, the liquid crystal functional layer include set gradually upper polaroid, optical filter,
Liquid crystal layer, substrate and down polaroid, the backlight module include set gradually upper diffusion sheet, upper prismatic lens,
Lower prismatic lens, lower diffusion sheet, light guide plate and reflector plate.
3. touch display unit according to claim 2, it is characterised in that the touch sensing unit
Integrated with display unit and set, the elastic layer is located between cover sheet and display unit, the feeling of stress
Answer unit also to include carrying the first vector of upper conductive electrode layer and carry the Second support of lower conductive electrode layer,
The first vector and upper conductive electrode layer are located between cover sheet and elastic layer, and the Second support is with
Conductive electrode layer is located between elastic layer and display unit.
4. touch display unit according to claim 2, it is characterised in that the touch sensing unit
Between cover sheet and display unit, the elastic layer is located between touch sensing unit and display unit,
The pressure sensitive unit also includes carrying the first vector of upper conductive electrode layer and carries lower conductive electrode layer
Second support, the first vector and upper conductive electrode layer are located between cover sheet and touch sensing unit,
The Second support and lower conductive electrode layer are located between elastic layer and display unit.
5. touch display unit according to claim 2, it is characterised in that the touch sensing unit
Between cover sheet and display unit, the elastic layer is located between cover sheet and touch sensing unit,
The pressure sensitive unit also includes carrying the first vector of upper conductive electrode layer and carries lower conductive electrode layer
Second support, the first vector and upper conductive electrode layer are located between cover sheet and elastic layer, and described the
Two carriers and lower conductive electrode layer are located between elastic layer and display unit.
6. touch display unit according to claim 2, it is characterised in that the elastic layer is located at institute
State between the down polaroid of liquid crystal functional layer and the backlight module, the pressure sensitive unit also includes carrying
The first vector of upper conductive electrode layer and the Second support of lower conductive electrode layer is carried, the first vector and upper
Conductive electrode layer is located between cover sheet and elastic layer, and the Second support and lower conductive electrode layer are located at bullet
Property layer and the backlight module between.
7. touch display unit according to claim 6, it is characterised in that the upper diffusion sheet, on
Prismatic lens, lower prismatic lens or lower diffusion sheet serve as the Second support, the cover sheet, substrate or lower inclined
Mating plate serves as the first vector.
8. the touch display unit according to any one in claim 3-5, it is characterised in that institute
State upper polaroid, optical filter or substrate and serve as the Second support.
9. the touch display unit according to any one in claim 3-5, it is characterised in that institute
State cover sheet and serve as the first vector.
10. the touch display unit according to any one in claim 2-7, the elastic layer includes
Matrix and the deformable material carried by matrix.
11. touch display units according to claim 10, when the elastic layer be located at cover sheet with
When between display unit or between cover sheet and touch sensing unit, the cover sheet serves as described
Matrix；When the elastic layer is located between the down polaroid of the liquid crystal functional layer and the backlight module,
The down polaroid serves as described matrix.
12. touch display unit according to any one in claim 1-7, it is characterised in that institute
The capacitive sensing device for stating detection power is self-capacitance or mutual capacitance inductor.
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| CN201510907537.0A CN106855758A (en) | 2015-12-09 | 2015-12-09 | Touch display unit |
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| CN201510907537.0A CN106855758A (en) | 2015-12-09 | 2015-12-09 | Touch display unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526486A (en) * | 2017-08-29 | 2017-12-29 | 京东方科技集团股份有限公司 | Polaroid, touch-control display panel and touch control display apparatus |
| CN108418575A (en) * | 2018-06-08 | 2018-08-17 | 上海科世达-华阳汽车电器有限公司 | A kind of touch pressure sensor and touch pressure switch |
| CN108762538A (en) * | 2018-02-12 | 2018-11-06 | 敦泰科技(深圳)有限公司 | capacitive pressure detection device |
| CN108762539A (en) * | 2018-02-12 | 2018-11-06 | 敦泰科技(深圳)有限公司 | capacitive pressure detection method |
| CN111324234A (en) * | 2019-07-31 | 2020-06-23 | 友达光电股份有限公司 | Touch display device and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001154181A (en) * | 1999-12-01 | 2001-06-08 | Sharp Corp | Liquid crystal display device |
| CN102138120A (en) * | 2009-03-19 | 2011-07-27 | 索尼公司 | Sensor device and information processing device |
| CN103123069A (en) * | 2011-11-18 | 2013-05-29 | 上海中航光电子有限公司 | Backlight module and liquid crystal display device |
| CN104238182A (en) * | 2014-09-30 | 2014-12-24 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN104834121A (en) * | 2015-05-11 | 2015-08-12 | 京东方科技集团股份有限公司 | Touch substrate, display panel, display device and touch method |
| CN104951144A (en) * | 2015-07-28 | 2015-09-30 | 芜湖科创生产力促进中心有限责任公司 | Shock absorption-based three-dimensional multi-point touch screen and control method thereof |
-
2015
- 2015-12-09 CN CN201510907537.0A patent/CN106855758A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001154181A (en) * | 1999-12-01 | 2001-06-08 | Sharp Corp | Liquid crystal display device |
| CN102138120A (en) * | 2009-03-19 | 2011-07-27 | 索尼公司 | Sensor device and information processing device |
| CN103123069A (en) * | 2011-11-18 | 2013-05-29 | 上海中航光电子有限公司 | Backlight module and liquid crystal display device |
| CN104238182A (en) * | 2014-09-30 | 2014-12-24 | 深圳市华星光电技术有限公司 | Liquid crystal display device |
| CN104834121A (en) * | 2015-05-11 | 2015-08-12 | 京东方科技集团股份有限公司 | Touch substrate, display panel, display device and touch method |
| CN104951144A (en) * | 2015-07-28 | 2015-09-30 | 芜湖科创生产力促进中心有限责任公司 | Shock absorption-based three-dimensional multi-point touch screen and control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李欣: "多媒体技术及应用", vol. 1, 北京研究出版社, pages: 71 - 72 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526486A (en) * | 2017-08-29 | 2017-12-29 | 京东方科技集团股份有限公司 | Polaroid, touch-control display panel and touch control display apparatus |
| CN108762538A (en) * | 2018-02-12 | 2018-11-06 | 敦泰科技(深圳)有限公司 | capacitive pressure detection device |
| CN108762539A (en) * | 2018-02-12 | 2018-11-06 | 敦泰科技(深圳)有限公司 | capacitive pressure detection method |
| CN108418575A (en) * | 2018-06-08 | 2018-08-17 | 上海科世达-华阳汽车电器有限公司 | A kind of touch pressure sensor and touch pressure switch |
| CN108418575B (en) * | 2018-06-08 | 2024-12-17 | 上海科世达-华阳汽车电器有限公司 | Touch pressure sensor and touch pressure switch |
| CN111324234A (en) * | 2019-07-31 | 2020-06-23 | 友达光电股份有限公司 | Touch display device and manufacturing method thereof |
| TWI710945B (en) * | 2019-07-31 | 2020-11-21 | 友達光電股份有限公司 | Touch display device and manufacturing method thereof |
| CN111324234B (en) * | 2019-07-31 | 2023-07-07 | 友达光电股份有限公司 | Touch display device and manufacturing method thereof |
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Effective date of registration: 20210223 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: 330000 Huang Jia Hu Road, Nanchang economic and Technological Development Zone, Nanchang, Jiangxi Applicant before: Nanchang OFilm Tech. Co.,Ltd. Applicant before: Ophiguang Group Co.,Ltd. Applicant before: SUZHOU OFILM TECH Co.,Ltd. |
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