CN106919282A - Tactile feedback display screen - Google Patents
Tactile feedback display screen Download PDFInfo
- Publication number
- CN106919282A CN106919282A CN201710074405.3A CN201710074405A CN106919282A CN 106919282 A CN106919282 A CN 106919282A CN 201710074405 A CN201710074405 A CN 201710074405A CN 106919282 A CN106919282 A CN 106919282A
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- Prior art keywords
- signal
- haptic
- layer
- tactile feedback
- pressure
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention relates to a touch feedback display screen which comprises a screen body and a circuit board. The screen body comprises a tactile feedback module, a main display layer and a pressure sensor. The circuit board is provided with a signal processing circuit. Wherein, the tactile feedback module is covered on the main display layer. The pressure sensor is electrically connected with the signal processing circuit, and the signal processing circuit is also electrically connected with the tactile feedback module. The pressure sensor extracts an electrical signal that varies with the pressure to which the screen is subjected. The signal processing circuit amplifies the first electric signal extracted by the pressure sensor and outputs a second electric signal formed after amplification to the tactile feedback module. The haptic feedback module forms an electric field according to the second electric signal to generate a haptic effect. This tactile feedback screen comes the response pressure through pressure sensor, and directly loads the second signal of telecommunication to tactile feedback module, is about to the device that detects pressure and the device that receives high-pressure signal are opened respectively to can avoid mutual interference taking place between these two kinds of devices, improve tactile feedback's degree of accuracy.
Description
Technical field
The present invention relates to display screen technology field, more particularly to a kind of tactile feedback display screen.
Background technology
Quickly popularized as the touch-screen of user input equipment, and come from industry, business and consumer etc. all
The user of market segment is constantly pursuing more preferable man-machine interface, with the development of technology, touching in terms of touch activation interface
Feel that feedback technique has obtained more and more extensive concern.Haptic feedback technology, can provide a user with immediately with it is accurate
Confirm such that it is able to improve Consumer's Experience.
In traditional haptic feedback technology, it usually needs detect pressure by tactile inductive layer (i.e. Sensor layers),
And the electric signal of pressure generation is fainter, it is therefore desirable to could utilize the electric signal after amplifying (i.e. high after electric signal is amplified
Pressure signal) dependency structure is driven produce haptic feedback effect.However, high-voltage signal is also carried in tactile inductive layer, such as
This operationally high-voltage signal tactile inductive layer can be interfered, so as to reduce the degree of accuracy of touch feedback.
The content of the invention
Based on this, it is necessary to high-voltage signal is carried in into tactile inductive layer for how to improve traditional haptic feedback technology,
So that the problem that operationally high-voltage signal can be interfered to tactile inductive layer, there is provided a kind of tactile feedback display screen.
A kind of tactile feedback display screen, including：Screen body and circuit board；The screen body includes haptic feedback module, main display
Layer and pressure sensor；The circuit board is provided with signal processing circuit；Wherein, the haptic feedback module is covered in the master and shows
Show on layer；The pressure sensor is electrically connected with the signal processing circuit, and the signal processing circuit also with the tactile
Feedback module is electrically connected；
The pressure sensor extracts the electric signal changed with the pressure that the screen body is subject to；The signal transacting electricity
The first electric signal that the pressure sensor is extracted is amplified on road, and the second electric signal output that will be formed after amplification is to the tactile
Feedback module；The haptic feedback module forms electric field according to second electric signal, to produce haptic effect.
Wherein in one embodiment, the haptic feedback module includes haptic signal layer and tactile generation unit；It is described
Tactile generation unit is covered on the haptic signal layer；The haptic signal layer is covered on the main display layer；It is described to touch
Feel that signals layer is electrically connected with the signal processing circuit；
The haptic signal layer is for receiving second electric signal；The tactile generation unit is used to believe with the tactile
Number floor produces the coupled voltages corresponding with second electric signal by coupling, and haptic effect is produced with by electric field.
Wherein in one embodiment, the tactile generation unit includes glass substrate, semiconductor layer and insulating barrier；It is described
Glass substrate is covered on the haptic signal layer；The semiconductor layer is covered on the glass substrate；The insulating barrier covers
It is placed on the semiconductor layer；
The semiconductor layer is used to form the coupled voltages by being coupled with haptic signal layer, with by electric field
Produce haptic effect.
Wherein in one embodiment, the material of the haptic signal layer is tin indium oxide or wire netting.
Wherein in one embodiment, the material of the semiconductor layer is indium zinc oxide, indium tin zinc oxide or mixes antimony dioxy
Change tin.
Wherein in one embodiment, the signal processing circuit includes pressure sensing cell and amplifying unit；The pressure
Power detection unit is electrically connected with the pressure sensor；The input of the amplifying unit is electrically connected with the pressure sensing cell
Connect, the output end of the amplifying unit is electrically connected with the haptic feedback module；
The pressure sensing cell is used to extract first electric signal by the pressure sensor, and by described first
Electric signal is sent to the amplifying unit；The amplifying unit is used to amplify first electric signal, and will be formed after amplification
Second electric signal send to the haptic feedback module.
Wherein in one embodiment, the pressure sensor is piezoresistance sensor.
Wherein in one embodiment, the pressure sensing cell includes signal generator, first resistor and second resistance；
The output end of the signal generator is electrically connected with one end of the first resistor and one end of the piezoresistance sensor simultaneously；Institute
The other end of first resistor is stated while being electrically connected with the other end of the piezoresistance sensor and one end of second resistance；Described second
The other end ground connection of resistance；The common port of the first resistor, the piezoresistance sensor and the second resistance is put with described
The input electrical connection of big unit.
Wherein in one embodiment, the signal generator be used for output frequency between 20Hz to 500Hz just
String ripple signal.
Wherein in one embodiment, the circuit board is flexible PCB.
Above-mentioned tactile feedback display screen have the advantage that for：In the tactile feedback display screen, circuit board is provided with letter
Number process circuit.Signal processing circuit amplifies the first electric signal that pressure sensor is extracted, and the second electricity that will be formed after amplification
Signal output is to haptic feedback module, so that electric field is formed according to the second electric signal by haptic feedback module, to produce tactile to imitate
Really.Therefore, above-mentioned touch feedback screen by pressure sensor come induction pressure, and will after amplification formed the second electric signal (i.e.
High-voltage signal) it is loaded directly into haptic feedback module, the device and the device for receiving high-voltage signal that will detect pressure are opened respectively
Come, such that it is able to avoid mutually being disturbed between both devices, improve the degree of accuracy of touch feedback.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
The accompanying drawing of other embodiment is obtained according to these accompanying drawings.
The structural representation of the tactile feedback display screen that Fig. 1 is provided for an embodiment；
Fig. 2 is the side structure schematic diagram of screen body in the tactile feedback display screen of embodiment illustrated in fig. 1；
Fig. 3 is the circuit diagram of signal processing circuit in the tactile feedback display screen of embodiment illustrated in fig. 1；
Fig. 4 is the distributed architecture schematic diagram of pressure sensor in the tactile feedback display screen of embodiment illustrated in fig. 1；
Fig. 5 is the relation schematic diagram between piezoresistance sensor resistance size and pressure size.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, the skill of all of technologies and scientific terms used here by the article and the technical field for belonging to invention
The implication that art personnel are generally understood that is identical.The term used in the description in invention is intended merely to description specifically herein
The purpose of embodiment, it is not intended that the limitation present invention.Term as used herein "and/or" includes one or more related institutes
The arbitrary and all of combination of list of items.
Fig. 1, Fig. 2 are refer to, an embodiment provides a kind of tactile feedback display screen, including screen body 100 and circuit board
200.Specifically, circuit board 200 can bind (Bonding) and be connected with screen body 100.In addition, circuit board 200 can be flexible electrical
Road plate (FPC, Flexible Printed Circuit).
Circuit board 200 is provided with signal processing circuit.Screen body 100 includes haptic feedback module 110, main display layer 120 and pressure
Force snesor 130.Wherein, haptic feedback module 110 is covered on main display layer 120.Pressure sensor 130 and signal transacting electricity
Road is electrically connected, and signal processing circuit is also electrically connected with haptic feedback module 110.
Wherein, main display layer 120 refers to the basic composition structure of display screen, for example：Main display layer 120 includes constituting
Each Rotating fields of OLED (Organic Light-Emitting Diode, organic luminous semiconductor) display are (for example：Including sun
Pole layer, organic luminous layer, cathode layer etc.), or main display layer 120 is including that can constitute LCD (Liquid Crystal
Display, liquid crystal display) each Rotating fields (for example：Including being provided with the upper substrate of colored filter, liquid crystal layer, being provided with film
Infrabasal plate of transistor etc.).
Pressure sensor 130 extracts the electric signal changed with the pressure that screen body 100 is subject to.In the embodiment of the present invention,
Tactile feedback display screen can include that multiple be distributed in the pressure sensors 130 of diverse location, and each pressure sensor 130 work
Make principle identical.Signal processing circuit amplifies the first electric signal that pressure sensor 130 is extracted, and second for being formed after amplification
Electric signal (i.e. high-voltage signal) is exported to haptic feedback module 110.Haptic feedback module 110 forms electricity according to the second electric signal
, to produce haptic effect.
In above-mentioned tactile feedback display screen, after user applies pressure, pressure sensor 13 can occur corresponding change,
Signal processing circuit can then extract corresponding first electric signal and be amplified.Afterwards, shape after signal processing circuit will amplify
Into the second electric signal output to haptic feedback module 110, and then by haptic feedback module 110 formed electric field, and due to
Human body can be conductive, therefore after haptic feedback module 110 produces electric field, then can after human contact to haptic feedback module 110
There is electric current to pass through, so as to produce haptic effect.Also, because the electric field that haptic feedback module 110 is finally produced is due to screen body
Formed after 100 pressure for receiving user's applying, therefore the pressure size that user applies will influence haptic feedback module 110
The electric field of generation, i.e., the pressure that screen body 100 surface is subject to is bigger, and the electric field that haptic feedback module 110 is produced is stronger, flows through user
Electric current it is stronger, that is, the haptic effect for producing is stronger；The pressure that screen body 100 surface is subject to is smaller, and haptic feedback module 110 is produced
Raw electric field is weaker, and the electric current for flowing through user is weaker, that is, the haptic effect for producing is fainter.
Therefore, the above-mentioned tactile feedback display screen for being provided in the embodiment of the present invention, pressure is sensed by pressure sensor 130
Power, and the second electric signal (i.e. high-voltage signal) formed after amplification is loaded directly into haptic feedback module 110, pressure will be detected
The device of power is distinguished from the device for receiving high-voltage signal, such that it is able to avoid mutually being disturbed between both devices,
Improve the degree of accuracy of touch feedback.
Wherein in one embodiment, please continue to refer to Fig. 2, haptic feedback module 110 includes haptic signal layer 111 and touches
Feel generation unit 112.Tactile generation unit 112 is covered on haptic signal layer 111.Haptic signal layer 111 is covered in main aobvious
Show on layer 120.Also, haptic signal layer 111 is electrically connected with signal processing circuit.
Wherein, haptic signal layer 111 is used to receive the second electric signal from signal processing circuit.Specifically, tactile is believed
Number floor 111 can connect the output end of signal processing circuit by FPC cablings.Also, the material of haptic signal layer 111 can be
Tin indium oxide (ITO, Indium Tin Oxides) or wire netting (Metal Mesh), on the one hand can improve the electricity of reception second
The sensitivity of signal, on the other hand can also reduce effect.
Tactile generation unit 112, it is corresponding with the second electric signal for being produced by coupling with haptic signal layer 111
Coupled voltages, haptic effect is produced with by electric field.Specifically, tactile generation unit 112 can pass through with haptic signal layer 111
Capacity coupled mode produces the coupled voltages corresponding with the second electric signal.
Therefore, in the embodiment of the present invention, the second electric signal exported by signal processing circuit is loaded onto haptic signal layer 111
On.And work as after haptic signal layer 111 is loaded with the second electric signal, then by way of coupling by energy be uploaded to tactile produce it is single
Unit 112, so as to produce haptic effect by tactile generation unit 112, can improve safety in utilization.
Specifically, please continue to refer to Fig. 2, tactile generation unit 112 includes glass substrate 1121, semiconductor layer 1122 and absolutely
Edge layer 1123.Wherein, glass substrate 1121 is covered on haptic signal layer 111.Semiconductor layer 1122 is covered in glass substrate
On 1121.Insulating barrier 1123 is covered on semiconductor layer 1122.
Wherein, semiconductor layer 1122 is used to form coupled voltages by being coupled with haptic signal layer 111, with by electric field
Produce haptic effect.Specifically, the material of semiconductor layer 1122 can for indium zinc oxide (TZO), indium tin zinc oxide (ITZO) or
Antimony-doped stannic oxide (Sol-Gel ATO).
In addition, refer to Fig. 4, pressure sensor 130 can be distributed in the surrounding of screen body 100, and positioned at haptic signal layer
111 periphery.Also, pressure sensor 130 can be distributed in the lower section of glass substrate 1121 or the lower section of main display layer 120.
In the embodiment of the present invention, after haptic signal layer 111 is loaded with the second electric signal, semiconductor layer 1122 then can be by coupling
Close and produce coupled voltages, so as to form electric field on screen body 100 surface.When user touch-screen 100 surface of body, finger and semiconductor
Layer 1122 may be constructed coupled capacitor.When finger is slided, pressure sensor 130 changes so that be loaded onto haptic signal layer
The coupled voltages that the second electric signal and semiconductor layer 1122 on 111 are produced accordingly change, therefore, the coupled capacitor also can
Change with the change of coupled voltages, and coupled capacitor in electric discharge to finger type into galvanism, so as to produce corresponding
Haptic effect.Specifically, the electric current that finger passes through is within 10mA.
It is understood that the concrete structure of haptic feedback module 110 is not limited to above-mentioned situation, for example, can also partly lead
The lower section of body layer 1122 increases tactile inductive layer, and at this moment semiconductor layer 1122 is due to the characteristic with semiconductor, therefore will not be to touching
Feel the signal shielding of inductive layer.
Wherein in one embodiment, Fig. 3 is refer to, signal processing circuit includes pressure sensing cell 310 and amplifies single
Unit 320.Pressure sensing cell 310 is electrically connected with pressure sensor 130.The input and pressure sensing cell of amplifying unit 320
310 electrical connections, the output end of amplifying unit 320 is electrically connected with haptic feedback module 110.
Wherein, pressure sensing cell 310 is used to extract above-mentioned first electric signal by pressure sensor 130, and by this
One electric signal is sent to amplifying unit 320.Amplifying unit 320 be used for by first electric signal amplify, and by after amplification formed
Second electric signal is sent to haptic feedback module 110.Specifically, amplifying unit 320 can be operational amplifier.Also, amplify
Electric signal can be amplified to 100 times by unit 320.
Specifically, pressure sensor 130 is piezoresistance sensor.Piezoresistance sensor refers to be imitated using the pressure drag of single crystal silicon material
The sensor that should be made with integrated circuit technique.The resistance of piezoresistance sensor refer to figure with the one of which physical relationship of pressure
5.When not pressing, the resistance of piezoresistance sensor is 40M, and the resistance of piezoresistive transducer is gradually reduced during pressing, minimum to be decreased to
Hundreds of ohm.
Further, please continue to refer to Fig. 3, pressure sensing cell 310 includes signal generator (XFG1), first resistor
And second resistance (R2) (R1).The output end of signal generator (XFG1) is sensed with one end of first resistor (R1) and pressure drag simultaneously
One end electrical connection of device (R3).The other end of first resistor (R1) other end and second resistance simultaneously with piezoresistance sensor (R3)
(R2) one end electrical connection.The other end ground connection of second resistance (R2).First resistor (R1), piezoresistance sensor (R3) and the second electricity
Input of the common port of (R2) with amplifying unit 320 is hindered to electrically connect.
Wherein, signal generator (XFG1) is used to export the signal of the frequency that human body can be perceived.Specifically, signal occurs
Device (XFG1) output frequency between 20Hz to 500Hz (such as 80Hz) sine wave signal U.The voltage of second resistance (R2)
Vout1 is (R2/ (R1*R3/ (R1+R3)+R2)) U.First resistor (R1), the resistance of second resistance (R2) can be 100k Ω.
The resistance of piezoresistance sensor (R3) is 100k Ω to the maximum.
So, by sine wave signal U be frequency between 20Hz to 500Hz, as a example by the sine wave of ± 3.3V, work as pressure drag
The resistance of sensor (R3) from 100k Ω be down to 1k Ω when, the voltage Vout1 of second resistance (R2) increases to 3.2V from 2.2V.Such as
Fruit amplifying unit 320 can amplify if 100 times, from Vout2 output amplification after electric signal for frequency between 20Hz to
Between 500Hz, voltage for ± 220V~± 320V sine wave signal.
It is understood that the specific implementation of signal processing circuit is not limited to above-mentioned situation, such as pressure sensor
130 sensors that pressure can also can be detected for other types, such as piezo-electric pressure sensor, ceramic pressure sensor etc.,
At this moment pressure sensing cell 310 will also do adaptations, to guarantee to extract relevant with pressure by pressure sensor 130
Electric signal.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of tactile feedback display screen, it is characterised in that including：Screen body and circuit board；The screen body includes touch feedback mould
Block, main display layer and pressure sensor；The circuit board is provided with signal processing circuit；Wherein, the haptic feedback module covering
In on the main display layer；The pressure sensor is electrically connected with the signal processing circuit, and the signal processing circuit is also
Electrically connected with the haptic feedback module；
The pressure sensor extracts the electric signal changed with the pressure that the screen body is subject to；The signal processing circuit is put
The first electric signal that the big pressure sensor is extracted, and the second electric signal output that will be formed after amplification is to the touch feedback
Module；The haptic feedback module forms electric field according to second electric signal, to produce haptic effect.
2. tactile feedback display screen according to claim 1, it is characterised in that the haptic feedback module includes tactile letter
Number floor and tactile generation unit；The tactile generation unit is covered on the haptic signal layer；The haptic signal layer covering
In on the main display layer；The haptic signal layer is electrically connected with the signal processing circuit；
The haptic signal layer is for receiving second electric signal；The tactile generation unit is used for and haptic signal layer
The coupled voltages corresponding with second electric signal are produced by coupling, haptic effect is produced with by electric field.
3. tactile feedback display screen according to claim 2, it is characterised in that the tactile generation unit includes glass base
Plate, semiconductor layer and insulating barrier；The glass substrate is covered on the haptic signal layer；The semiconductor layer is covered in described
On glass substrate；The insulating barrier is covered on the semiconductor layer；
The semiconductor layer is used to form the coupled voltages by being coupled with haptic signal layer, is produced with by electric field
Haptic effect.
4. tactile feedback display screen according to claim 2, it is characterised in that the material of the haptic signal layer is oxidation
Indium tin or wire netting.
5. tactile feedback display screen according to claim 3, it is characterised in that the material of the semiconductor layer is indium oxide
Zinc, indium tin zinc oxide or antimony-doped stannic oxide.
6. tactile feedback display screen according to claim 1, it is characterised in that the signal processing circuit includes pressure inspection
Survey unit and amplifying unit；The pressure sensing cell is electrically connected with the pressure sensor；The input of the amplifying unit
Electrically connected with the pressure sensing cell, the output end of the amplifying unit is electrically connected with the haptic feedback module；
The pressure sensing cell is used to extract first electric signal by the pressure sensor, and by first telecommunications
Number send to the amplifying unit；The amplifying unit is used to amplify first electric signal, and the institute that will be formed after amplification
The second electric signal is stated to send to the haptic feedback module.
7. tactile feedback display screen according to claim 6, it is characterised in that the pressure sensor is pressure drag sensing
Device.
8. tactile feedback display screen according to claim 7, it is characterised in that the pressure sensing cell includes signal hair
Raw device, first resistor and second resistance；The output end of the signal generator simultaneously with one end of the first resistor and described
One end electrical connection of piezoresistance sensor；The other end of the first resistor simultaneously with the other end of the piezoresistance sensor and second
One end electrical connection of resistance；The other end ground connection of the second resistance；The first resistor, the piezoresistance sensor and described
Input of the common port of two resistance with the amplifying unit is electrically connected.
9. tactile feedback display screen according to claim 8, it is characterised in that the signal generator is used for output frequency
Sine wave signal between 20Hz to 500Hz.
10. the tactile feedback display screen according to any claim in claim 1 to 9, it is characterised in that the circuit
Plate is flexible PCB.
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| CN201710074405.3A CN106919282A (en) | 2017-02-10 | 2017-02-10 | Tactile feedback display screen |
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| CN201710074405.3A CN106919282A (en) | 2017-02-10 | 2017-02-10 | Tactile feedback display screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198977A (en) * | 2020-09-01 | 2021-01-08 | 盐城华旭光电技术有限公司 | Touch integrated display panel and preparation method thereof |
| CN113366417B (en) * | 2019-01-24 | 2024-05-14 | 三星显示有限公司 | Touch sensing unit and display device including the same |
| WO2024239566A1 (en) * | 2023-05-23 | 2024-11-28 | 武汉华星光电半导体显示技术有限公司 | Display module and touch feedback method therefor |
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