CN109491552A - Electronic equipment - Google Patents
Electronic equipment Download PDFInfo
- Publication number
- CN109491552A CN109491552A CN201710819174.4A CN201710819174A CN109491552A CN 109491552 A CN109491552 A CN 109491552A CN 201710819174 A CN201710819174 A CN 201710819174A CN 109491552 A CN109491552 A CN 109491552A
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- CN
- China
- Prior art keywords
- ultrasonic wave
- electronic equipment
- mould group
- control unit
- display screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Position Input By Displaying (AREA)
Abstract
It include display screen the present invention relates to a kind of electronic equipment.Ultrasonic wave mould group is equipped in the display screen, and the electronic equipment further includes control unit.Each structure in the display screen above the ultrasonic wave mould group being capable of conduct ultrasound.The top surface of the ultrasonic wave mould group is towards display screen surface for displaying images, and the ultrasonic wave mould group for the transmitting ultrasonic wave under the control of described control unit and receives the ultrasonic wave reflected from target, and the ultrasonic wave of reflection is converted to electric signal.Described control unit is used to judge to think there is electronic equipment described in gtoal setting when the intensity of the electric signal is greater than given threshold.Above-mentioned electronic equipment has detected whether gtoal setting electronic equipment using ultrasonic wave, and since ultrasonic wave has the ability of penetrable material, so there is no need to apertures on an electronic device, and short distance sensing function can be realized, to improve the waterproof performance of electronic equipment.
Description
Technical field
The present invention relates to electronic technology fields, more particularly to a kind of electronic equipment.
Background technique
It is usually equipped with Proximity Sensor in traditional electronic equipment, is taken the mobile phone as an example, the usual position of Proximity Sensor
It is that ranging is carried out by infrared ray, when mobile phone user receives calls or put into pocket in the upper left corner or the upper right corner of mobile phone
When, Proximity Sensor may determine that mobile phone closes the touch function of screen close to face or the clothes of people, in this way
It is prevented that maloperation.
However, since traditional Proximity Sensor needs to have detected whether that object is set close to electronics using infrared ray
It is standby, it is therefore desirable to which that aperture is so that infrared penetration screen on an electronic device, to reduce the waterproof performance of electronic equipment.
Summary of the invention
Based on this, it is necessary to aiming at the problem that conventional electronic devices need aperture that could use Proximity Sensor, provide
A kind of electronic equipment.
A kind of electronic equipment, including display screen；Ultrasonic wave mould group is equipped in the display screen, and the electronic equipment also wraps
Include control unit；Each structure in the display screen above the ultrasonic wave mould group being capable of conduct ultrasound；It is described super
The top surface of sound wave mould group is towards display screen surface for displaying images, and the ultrasonic wave mould group is used in the control
Emit ultrasonic wave under the control of unit and receive the ultrasonic wave reflected from target, and the ultrasonic wave of reflection is converted into electric signal；
Described control unit is used to judge to think there is electronic equipment described in gtoal setting when the intensity of the electric signal is greater than given threshold.
Above-mentioned electronic equipment has detected whether gtoal setting electronic equipment using ultrasonic wave, since ultrasonic wave has the energy of penetrable material
Power, so there is no need to apertures on an electronic device, and short distance sensing function can be realized, to improve the waterproof performance of electronic equipment.
Described control unit is also used to carry out fingerprint recognition according to the electric signal in one of the embodiments,；It is described
Control unit controls the ultrasonic wave mould group transmitting first frequency when needing to judge whether there is electronic equipment described in gtoal setting
Ultrasonic wave；Described control unit controls the super of the ultrasonic wave mould group transmitting second frequency when needing to carry out fingerprint recognition
Sound wave；The first frequency is less than the second frequency.
Described control unit is also used to when needing to carry out gesture identification in one of the embodiments, is controlled described super
The ultrasonic wave of sound wave mould group transmitting first frequency.It is set executing gesture identification function with the above-mentioned gtoal setting electronics that judges whether there is
When standby function, ultrasonic wave mould group emits the ultrasonic wave of identical frequency, it is possible to reduce the calculation resources of control unit, to improve
Operating rate.
The first frequency is between 30KHz between 50KHz in one of the embodiments,.
The second frequency is between 10MHz between 18MHz in one of the embodiments,.
The ultrasonic wave mould group includes TFT substrate, electrode layer and piezoelectric layer in one of the embodiments,；The electrode
Layer and the piezoelectric layer are respectively positioned on the lower section of the TFT substrate；The TFT substrate, the electrode layer are single with the control respectively
Member electrical connection.
The electrode layer is between the TFT substrate and the piezoelectric layer in one of the embodiments, can be to avoid
Piezoelectric layer is influenced by high temperature, improves the reliability of ultrasonic wave mould group 100.
The material of the electrode layer is silver paste or ITO in one of the embodiments,.
Protection structure is additionally provided in the display screen in one of the embodiments,；The protection structure is set to described super
The bottom of sound wave mould group, and for carrying out EMI protection to the ultrasonic wave mould group.Structure is protected by setting, it can be to avoid outer
Sector signal influences ultrasonic wave mould group.
The protection structure is conducting foam or transparency protected ink in one of the embodiments,.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The attached drawing of other embodiments is obtained according to these attached drawings.
Relevant circuit block diagram in the electronic equipment that Fig. 1 provides for an embodiment；
Fig. 2 is the structural representation of one of embodiment of ultrasonic wave mould group in the electronic equipment of Fig. 1 illustrated embodiment
Figure；
Fig. 3 is one of concrete structure schematic diagram of ultrasonic wave mould group in the electronic equipment of embodiment illustrated in fig. 2.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, the skill of all technical and scientific terms used herein and the technical field for belonging to invention
The normally understood meaning of art personnel is identical.It is specific that description is intended merely in the term used in the description of invention herein
The purpose of embodiment, it is not intended that the limitation present invention.Term as used herein "and/or" includes one or more relevant institutes
Any and all combinations of list of items.
One embodiment provides a kind of electronic equipment, which is, for example, tablet computer, personal digital assistant, hand
Machine etc..The electronic equipment includes display screen.Specifically, display screen is, for example, OLED (Organic Light-Emitting
Diode, Organic Light Emitting Diode) display screen or liquid crystal display.
Fig. 1 and Fig. 2 is please referred to, is equipped with ultrasonic wave mould group 100 in display screen, and the electronic equipment further includes control unit
200.Each structure in display screen positioned at 100 top of ultrasonic wave mould group being capable of conduct ultrasound.The top surface of ultrasonic wave mould group 100
Towards display screen surface for displaying images, and ultrasonic wave mould group 100 is used to emit ultrasound under the control of control unit 200
The ultrasonic wave that wave and reception are reflected from target, and the ultrasonic wave of reflection is converted into electric signal, then the electric signal is sent to control
Unit 200 processed.
Wherein, positioned at each structure of 100 top of ultrasonic wave mould group in display screen, refer between ultrasonic wave mould group 100 and show
Each layer structure between display screen surface for displaying images, in other words, these structures are located at ultrasonic wave from ultrasonic wave mould group 100
On conduction to the path between target.Specifically, the acoustic impedance in display screen positioned at each structure of 100 top of ultrasonic wave mould group is equal
Less than given threshold (such as acoustic impedance and the acoustic impedance of glass approach), conduct ultrasound thereby may be ensured that.Target is, for example,
Human body or other objects.
Control unit 200 has data-handling capacity, can handle the data in software, for example, single-chip microcontroller or ASIC
(Application Specific Integrated Circuit) chip etc..Control unit 200 may be mounted at display screen
Other positions that are interior, can also being located in the electronic equipment except display screen.Control unit 200 controls ultrasonic wave mould group 100 and transports
Capable principle are as follows: on the one hand, control unit 200 provides control signal (such as to ultrasonic wave mould group 100 to ultrasonic wave mould group 100
Send high frequency electrical signal) so that ultrasonic wave mould group 100 emits ultrasonic wave；On the other hand, control unit 200 also receives ultrasound
The electric signal that the ultrasonic wave of reflection is converted to by wave mould group 100.
In addition, control unit 200 is used to judge to think have when the intensity of electric signal is greater than given threshold in present embodiment
Gtoal setting electronic equipment.Since target range electronic equipment is closer, the ultrasonic wave projected out of display screen reaches the number of target
Amount is more, so that the quantity of the ultrasonic wave reflected from target is also more, correspondingly, ultrasonic wave mould group 100 is received
The intensity for the electric signal that the ultrasonic wave of reflection is converted to is also bigger, therefore, can be judged according to the intensity of electric signal be
It is no to have gtoal setting electronic equipment.Wherein, when the distance between target and electronic equipment are less than set distance, then it is assumed that target
Close to electronic equipment.
In addition, if CPU (Central Processing Unit, centre in control unit 200 and electronic equipment
Reason device) be it is independent, then the judgement of control unit 200 sends corresponding interrupt signal to CPU when having gtoal setting electronic equipment,
After CPU receives the interrupt signal, then the touch function of screen can be closed.Alternatively, control unit 200 can also directly be
CPU, at this point, when the judgement of control unit 200 has target close to electronic equipment, then the direct touch function of closing screen.
In conclusion above-mentioned electronic equipment has detected whether gtoal setting electronic equipment using ultrasonic wave, due to ultrasound
Wave has the ability of penetrable material, and there is no need to apertures on an electronic device, and short distance sensing function can be realized, to improve
The waterproof performance of electronic equipment.
Control unit 200 is also used to carry out fingerprint recognition according to above electrical signal in one of the embodiments,.Change speech
It, in the present embodiment, may be implemented two functions using ultrasonic wave mould group 100: both can use and detected whether gtoal setting
Electronic equipment, and fingerprint recognition can be carried out.
Also, control unit 200 controls ultrasonic wave mould group 100 when needing to judge whether there is gtoal setting electronic equipment
Emit the ultrasonic wave of first frequency.Control unit 200 is when needing to carry out fingerprint recognition, control ultrasonic wave mould group 100 transmitting the
The ultrasonic wave of two frequencies.First frequency is less than second frequency.Specifically, first frequency is between 30KHz between 50KHz, example
For example 40KHz.Second frequency is between 10MHz between 18MHz.
Wherein, control unit 200 can judge which function executed according to the information that user inputs, alternatively, control
Unit 200 can also voluntarily switch between two functions according to the pre-set information of user.Also, due to ultrasound
The frequency of wave is lower, and penetration power is stronger, therefore when judging whether there is gtoal setting electronic equipment, due to target and display screen it
Between have certain distance, therefore, ultrasonic wave mould group 100 needs to emit the ultrasonic wave of lower frequency (i.e. above-mentioned first frequency), with
Convenient for ultrasonic wave can transmit larger distance and reach target.And when executing fingerprint identification function, the frequency of ultrasonic wave is got over
The precision of height identification is higher, and since the finger of user directly contacts display screen, lower to the required distance of ultrasonic transmission,
Therefore, the ultrasonic wave that ultrasonic wave mould group 100 emits upper frequency (i.e. above-mentioned second frequency) is more suitable for fingerprint identification function.
Control unit 200 is also used to when needing to carry out gesture identification in one of the embodiments, controls ultrasonic wave mould
The ultrasonic wave of 100 transmitting first frequency of group.When due to carrying out gesture identification, equally there is certain distance between hand and display screen,
Therefore the ultrasonic wave for needing ultrasonic wave mould group 100 to emit has stronger penetration power, and at this moment ultrasonic wave mould group 100 needs to emit frequency
The lower ultrasonic wave of rate.In addition, execute gesture identification function and it is above-mentioned judge whether there is gtoal setting electronic functionalities when,
Ultrasonic wave mould group 100 emits the ultrasonic wave of identical frequency, it is possible to reduce the calculation resources of control unit 200, to improve fortune
Scanning frequency rate.
Specifically, control unit 200 for example can be with base according to the function that the ultrasonic wave reflected from target carries out gesture identification
It is completed in Doppler effect (i.e. the change of sound frequency is related with the distance between sound source and hearer): when ultrasonic wave mould group
After the ultrasonic wave of 100 transmitting certain frequencies, the frequency of the ultrasonic wave reflected from target can change with the variation of target position,
It, can be quasi- then by the calculating in terms of related existing algorithm progress frequency and phase by measuring the variation of this frequency
Determine position and identification gesture.
In one of the embodiments, specifically, with continued reference to FIG. 2, ultrasonic wave mould group 100 include TFT substrate 110,
Electrode layer 120 and piezoelectric layer 130.Electrode layer 120 and piezoelectric layer 130 are respectively positioned on the lower section of TFT substrate 110.TFT substrate 110, electricity
Pole layer 120 is electrically connected with control unit 200 respectively.
Wherein, TFT substrate 110 includes several thin film transistor (TFT)s arranged according to array manner, also, TFT substrate 110 can
The processing such as to amplify according to the electric signal that the ultrasonic wave of reflection is converted to piezoelectric layer 130.Electrode layer 120 is by conduction material
Material is constituted, and conductive material is, for example, silver paste or ITO.Piezoelectric layer 130 is made of piezoelectric material.Piezoelectric material is, for example, ferroelectricity high score
Sub- polymer P (VDF-TrFE).
The working principle of above-mentioned ultrasonic wave mould group 100 are as follows: control unit 200 applies corresponding high-frequency electrical to electrode layer 120
Signal.After electrode layer 120 has been applied high frequency electrical signal, high frequency electrical signal is conducted to piezoelectric layer 130, so that piezoelectricity
Layer 130 emits ultrasonic wave.Ultrasonic wave is reflected after upwardly propagating until reaching target, and piezoelectric layer 130 receives reflection later
Ultrasonic wave is simultaneously converted to electric signal, which is sent to control after corresponding processing (such as amplification) through TFT substrate 110 again
Unit 200 processed.
Specifically, electrode layer 120 is between TFT substrate 110 and piezoelectric layer 130.Due to the solidification temperature of electrode layer 120
It is usually higher, if such as conductive material is silver paste, the solidification temperature of electrode layer 120 is 80 DEG C, and piezoelectric layer 130 is unbearable
Therefore higher temperature in the present embodiment, electrode layer 120 is set between TFT substrate 110 and piezoelectric layer 130, so as to
Electrode layer 120 first is formed in the bottom surface of TFT substrate 110, after the completion of the solidification of electrode layer 120, then in the bottom surface shape of electrode layer 120
The reliability of ultrasonic wave mould group 100 is improved at piezoelectric layer 130 so as to avoid piezoelectric layer 130 by the influence of high temperature.
In one of the embodiments, referring to FIG. 3, above-mentioned display screen further includes protection structure 140.It needs to illustrate
It is that the protection structure 140 provided in the embodiment can be combined with the electronic equipment that the various embodiments described above provide.Protect structure
140 are set to the bottom of ultrasonic wave mould group 100, and for carrying out EMI (Electromagnetic to ultrasonic wave mould group 100
Interference, electromagnetic interference) protection.Specifically, the specific structure of the electronic equipment provided based on the above embodiment, protection
Structure 140 is located at the lower section of piezoelectric layer 130.Therefore, structure 140 is protected by setting, ultrasound can be influenced to avoid outer signals
Wave mould group 100.Specifically, protection structure 140 is conducting foam or transparency protected ink.
Above-mentioned display screen can be active matrix OLED display screen in one of the embodiments, at this moment TFT substrate
The thin film transistor (TFT) array for controlling anode layer can be set in 110 upper surface.Also, anode layer is covered in TFT substrate 110
On, organic luminous layer, cathode layer are followed successively by above anode layer.Therefore, in the active matrix OLED display screen, ultrasonic wave
The ultrasonic wave that mould group 100 issues passes sequentially through i.e. reachable display screen surface after organic luminous layer, cathode layer.
Above-mentioned display screen may be active matrix liquid crystal display in one of the embodiments, and ultrasonic wave mould
Group 100 is located at the top of down polaroid in display screen.In display screen under upper for example, upper polaroid, colored filter,
Liquid crystal layer, ultrasonic wave mould group 100, down polaroid and backlight.Therefore, in the active matrix liquid crystal display, ultrasonic wave
The ultrasonic wave that mould group 100 emits passes sequentially through the surface of i.e. reachable display screen after liquid crystal layer, colored filter, upper polaroid.
Specifically, under the premise of display screen is active matrix type liquid crystal display screen, protection structure 140 is transparency protected ink.It is transparent
Ink is protected, referring to can be with the protection ink of light transmission, to guarantee that the light of backlight transmitting can penetrate ultrasonic wave mould group
100.The material of electrode layer 120 is ITO.Since ITO can guarantee that the light of backlight transmitting can penetrate with light transmission
Ultrasonic wave mould group 100.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies 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, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of electronic equipment, including display screen；It is characterized in that, being equipped with ultrasonic wave mould group in the display screen, and the electricity
Sub- equipment further includes control unit；Each structure in the display screen above the ultrasonic wave mould group can conduct ultrasound
Wave；The top surface of the ultrasonic wave mould group is towards display screen surface for displaying images, and the ultrasonic wave mould group is used for
Emit ultrasonic wave under the control of described control unit and receive the ultrasonic wave reflected from target, and the ultrasonic wave of reflection is converted
For electric signal；Described control unit is used to judge to think have described in gtoal setting when the intensity of the electric signal is greater than given threshold
Electronic equipment.
2. electronic equipment according to claim 1, which is characterized in that described control unit is also used to according to the electric signal
Carry out fingerprint recognition；
Described control unit controls the ultrasonic wave mould group transmitting when needing to judge whether there is electronic equipment described in gtoal setting
The ultrasonic wave of first frequency；Described control unit controls the ultrasonic wave mould group transmitting second when needing to carry out fingerprint recognition
The ultrasonic wave of frequency；The first frequency is less than the second frequency.
3. electronic equipment according to claim 2, which is characterized in that described control unit is also used to needing to carry out gesture
When identification, the ultrasonic wave of the ultrasonic wave mould group transmitting first frequency is controlled.
4. electronic equipment according to claim 2, which is characterized in that the first frequency between 30KHz to 50KHz it
Between.
5. electronic equipment according to claim 2, which is characterized in that the second frequency between 10MHz to 18MHz it
Between.
6. according to claim 1 to electronic equipment described in any one of 5 claims, which is characterized in that the ultrasonic wave mould
Group includes TFT substrate, electrode layer and piezoelectric layer；The electrode layer and the piezoelectric layer are respectively positioned on the lower section of the TFT substrate；Institute
State TFT substrate, the electrode layer is electrically connected with the control unit respectively.
7. electronic equipment according to claim 6, which is characterized in that the electrode layer be located at the TFT substrate with it is described
Between piezoelectric layer.
8. electronic equipment according to claim 6, which is characterized in that the material of the electrode layer is silver paste or ITO.
9. electronic equipment according to claim 6, which is characterized in that be additionally provided with protection structure in the display screen；It is described
Structure is protected to be set to the bottom of the ultrasonic wave mould group, and for carrying out EMI protection to the ultrasonic wave mould group.
10. electronic equipment according to claim 9, which is characterized in that the protection structure is conducting foam or transparent guarantor
Protect ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710819174.4A CN109491552A (en) | 2017-09-12 | 2017-09-12 | Electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710819174.4A CN109491552A (en) | 2017-09-12 | 2017-09-12 | Electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109491552A true CN109491552A (en) | 2019-03-19 |
Family
ID=65688896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710819174.4A Pending CN109491552A (en) | 2017-09-12 | 2017-09-12 | Electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109491552A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110213416A (en) * | 2019-06-24 | 2019-09-06 | Oppo广东移动通信有限公司 | Ultrasonic sensor mould group, display screen module and electronic equipment |
| EP3757876A1 (en) * | 2019-06-29 | 2020-12-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for collecting fingerprints and related products |
| CN112987925A (en) * | 2021-03-04 | 2021-06-18 | 歌尔科技有限公司 | Earphone and control method and device thereof |
| WO2021175101A1 (en) * | 2020-03-06 | 2021-09-10 | 欧菲光集团股份有限公司 | Electrically-conductive foam, ultrasonic fingerprint module, display screen assembly, and electronic apparatus |
| CN115971021A (en) * | 2022-12-19 | 2023-04-18 | 京东方科技集团股份有限公司 | Ultrasonic transduction substrate, manufacturing method of transduction substrate and detection method |
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Application publication date: 20190319 |