CN114442807B - Ultrasonic wave generating assembly and electronic equipment - Google Patents
Ultrasonic wave generating assembly and electronic equipment Download PDFInfo
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- CN114442807B CN114442807B CN202210055178.0A CN202210055178A CN114442807B CN 114442807 B CN114442807 B CN 114442807B CN 202210055178 A CN202210055178 A CN 202210055178A CN 114442807 B CN114442807 B CN 114442807B
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- 239000002033 PVDF binder Substances 0.000 claims description 6
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- 238000002604 ultrasonography Methods 0.000 claims description 5
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
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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)
- Mechanical Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application discloses ultrasonic wave generation component and electronic equipment, ultrasonic wave generation component includes: a support plate; the flexible circuit board is arranged on the supporting plate and is provided with a first interface; the TFT circuit driving module is arranged on the driving flexible circuit board, and a second interface is reserved on the TFT circuit driving module and is used for being electrically connected with the first interface; and one side of the TFT circuit driving module, which is far away from the supporting plate, is provided with an ultrasonic wave generating structure, and the ultrasonic wave generating structure is used for being driven by the TFT circuit driving module so as to generate ultrasonic waves. The TFT circuit driving module drives the ultrasonic wave generating structure to generate ultrasonic waves, so that a user can touch the 3D model.
Description
Technical Field
The application relates to the technical field of display, in particular to an ultrasonic generating assembly and electronic equipment.
Background
Currently, in a scene such as a trade show, a customer communication, etc. where articles need to be displayed, the articles cannot be carried to the site or the on-site display effect is poor due to the limitation of the articles themselves (for example, the articles are too large in size and not easy to be transported, etc.), the limitation of the exhibition environment (light, loud noise, no water and fire energy, etc.).
In the related art, a 3D model can be directly displayed from a mobile phone end through glasses. The 3D model can be perceived by naked eyes from the screen end, namely, the 2D picture overflows, and the vision and hearing are finished in the scene perception, but the 3D model can be perceived by a user only through the vision and hearing, and the 3D model cannot be touched, so that the 3D effect in the prior art is poor.
Accordingly, the prior art has drawbacks and improvements are urgently needed.
Disclosure of Invention
The embodiment of the application provides an ultrasonic wave generation assembly and electronic equipment, can realize 3D's tactile feedback on electronic equipment, improves 3D effect.
An embodiment of the present application provides an ultrasonic wave generating assembly, including:
a support plate;
the flexible circuit board is arranged on the supporting plate and is provided with a first interface;
the TFT circuit driving module is arranged on the driving flexible circuit board, and a second interface is reserved on the TFT circuit driving module and is used for being electrically connected with the first interface; wherein,
an ultrasonic wave generating structure is arranged on one side, far away from the supporting plate, of the TFT circuit driving module and is used for being driven by the TFT circuit driving module so as to generate ultrasonic waves.
In the ultrasonic wave generation assembly of the application, TFT circuit drive module includes TFT circuit carrier film, TFT transmitting circuit and the TFT circuit drive structure of range upon range of setting from bottom to top, just the second interface set up in on the TFT circuit drive structure, in order to pass through TFT circuit drive structure receives the drive signal of flexible circuit board, thereby the drive the ultrasonic wave produces the structure.
In the ultrasonic wave generating assembly described in the present application, the TFT circuit carrier film is composed of a high temperature resistant organic material.
In the ultrasonic wave generating assembly described in the present application, the driving frequency at which the TFT circuit driving structure drives the ultrasonic wave generating structure is 40kHz to 80kHz.
In the ultrasonic wave generating assembly, a transmission cavity is further arranged on the ultrasonic wave generating structure and used for transmitting ultrasonic waves generated by the ultrasonic wave generating structure.
In the ultrasonic wave generating assembly described herein, the first current value is 2 times the second current value.
In the ultrasonic wave generating assembly described herein, the ultrasonic wave generating structure is composed of polyvinylidene fluoride material.
In the ultrasonic wave generation assembly, optical cement is arranged between the supporting plate and the flexible circuit board, and optical cement is arranged between the flexible circuit board and the TFT circuit driving module.
The embodiment of the application also provides electronic equipment, which comprises:
a light emitting panel comprising a display screen;
the ultrasonic wave generation assembly is arranged on the display screen, and the ultrasonic wave generation assembly is the ultrasonic wave generation assembly.
In the electronic device, the ultrasonic wave generating components are arranged in an array on the display screen.
In the electronic device described in the present application, the material density of the transmission cavity in the ultrasonic wave generating assembly is the same as the material density of the display screen, and the material acoustic refraction and reflection rate of the transmission cavity in the ultrasonic wave generating assembly is the same as the material acoustic refraction and reflection rate of the display screen.
The ultrasonic wave generation assembly that this application embodiment provided includes: a support plate; the flexible circuit board is arranged on the supporting plate and is provided with a first interface; the TFT circuit driving module is arranged on the driving flexible circuit board, and a second interface is reserved on the TFT circuit driving module and is used for being electrically connected with the first interface; and one side of the TFT circuit driving module, which is far away from the supporting plate, is provided with an ultrasonic wave generating structure, and the ultrasonic wave generating structure is used for being driven by the TFT circuit driving module so as to generate ultrasonic waves. Based on this, the ultrasonic wave generating structure is driven by the TFT circuit driving module to generate ultrasonic waves, so that a user can touch the 3D model.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an ultrasonic wave generating assembly disposed on a display screen of a light emitting panel according to an embodiment of the present application.
Fig. 3 is a schematic view of forming overlapping points in space by an ultrasonic wave generating assembly according to an embodiment of the present application.
Fig. 4 is a schematic view of a first structure of an ultrasonic wave generating assembly according to an embodiment of the present application.
Fig. 5 is a schematic driving diagram of the ultrasonic wave generating structure.
Fig. 6 is a schematic structural diagram of a TFT circuit according to an embodiment of the present application.
Fig. 7 is a schematic waveform diagram of the TFT circuit driving process according to the embodiment.
Fig. 8 is a schematic view of a second structure of an ultrasonic wave generating assembly according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
In the prior art, 3D models can be directly displayed from a mobile phone end through glasses. The 3D model can be perceived by naked eyes from the screen end, namely, the 2D picture overflows, and the vision and hearing are finished in the scene perception, but the 3D model can be perceived by a user only through the vision and hearing, and the 3D model cannot be touched, so that the 3D effect in the prior art is poor.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device 1000 according to an embodiment of the present application. The display device 100 may include a light emitting panel 100, a control circuit 200, and a case 300. It should be noted that, the electronic device 1000 shown in fig. 1 is not limited to the above, and may further include other devices, such as a camera, an antenna structure, a fingerprint unlocking module, and the like.
Wherein the light emitting panel 100 is disposed on the housing 200.
In some embodiments, the light emitting panel 100 may be fixed to the case 200, and the light emitting panel 100 and the case 300 form a closed space to accommodate the control circuit 200 and the like.
In some embodiments, the housing 300 may be made of a flexible material, such as a plastic housing or a silicone housing, etc.
The control circuit 200 is installed in the housing 300, and the control circuit 200 may be a motherboard of the electronic device 1000, and one, two or more of the functional components such as a battery, an antenna structure, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, a receiver, and a processor may be integrated on the control circuit 200.
Wherein the light emitting panel 100 is installed in the case 300, and at the same time, the light emitting panel 100 is electrically connected to the control circuit 200 to form a display surface of the electronic device 1000. The light emitting panel 100 may include a display region and a non-display region. The display area may be used to display a screen of the electronic device 1000 or for touch manipulation or the like by a user. The non-display area may be used to set various functional components. Specifically, a display screen is further arranged in the display area.
In some embodiments, the ultrasound generating assemblies are arranged in an array on the display screen.
Fig. 2 is a schematic structural diagram of an ultrasonic generating assembly disposed on a display screen of a light emitting panel according to an embodiment of the present application, as shown in fig. 2. Fig. 2 includes a display screen 11 disposed on the light emitting panel 100 and an ultrasonic wave generating assembly 400 arranged in an array on the display screen 11.
Specifically, since the ultrasonic waves are transmitted in the space in the form of sound waves, overlapping points exist in the space of the ultrasonic waves generated by each ultrasonic wave generating assembly 400 arranged in an array, and the shape of the 3D model can be constructed through the overlapping points, so that the effect that a user can touch the 3D model can be achieved.
Referring to fig. 3, fig. 3 is a schematic view illustrating formation of overlapping points in space by an ultrasonic wave generating assembly according to an embodiment of the present application. The display screen 11 is provided with ultrasonic wave generating assemblies 400 arranged in an array, and the sound waves in L1, L2, L3 and L4 are formed by controlling the voltage values input to different ultrasonic wave generating assemblies 400. And an overlapping point A exists in the space of L1, L2, L3 and L4, wherein the overlapping point A is a touch point of the 3D model which can be felt by a user.
In some embodiments, referring to fig. 4, fig. 4 is a schematic view of a first structure of an ultrasonic wave generating assembly according to an embodiment of the present application. The ultrasonic wave generating assembly includes:
a support plate 41;
a flexible circuit board 42, wherein the flexible circuit board 42 is arranged on the supporting board 41, and a first interface 421 is arranged on the flexible circuit board 42;
the TFT circuit driving module 43, where the TFT circuit driving module 43 is disposed on the driving flexible circuit board 42, and a second interface 431 is reserved in the TFT circuit driving module 43 and is used for electrically connecting with the first interface 421; wherein,
an ultrasonic wave generating structure 44 is provided at a side of the TFT circuit driving module 43 remote from the support plate 41, and the ultrasonic wave generating structure 44 is configured to be driven by the TFT circuit driving module 43 to generate ultrasonic waves.
In this case, the thickness vibration type piezoelectric transmitter is used as the ultrasonic wave generating structure 44, and ultrasonic waves can be generated by using the inverse piezoelectric principle. That is, a high-frequency sound wave (also a mechanical wave, i.e., a longitudinal wave) in a specific direction is generated by an ac voltage drive of a certain frequency. As shown in fig. 5, fig. 5 is a schematic driving view of the ultrasonic wave generating structure 44. The ultrasonic directional performance is excellent, and the energy is concentrated. As shown in the figure, P is the polarization direction of the material, and when an input sinusoidal voltage is applied across the material, a mechanical wave (i.e., acoustic wave) vibrating in the T direction is generated and starts to conduct.
Therefore, the ultrasonic wave generating structure 44 can be driven by the TFT circuit driving module 43, so that the ultrasonic wave generating structure 44 generates ultrasonic waves under the driving of the TFT circuit driving module 43. In addition, in order to supply power to the TFT circuit driving module 43, the first interface 421 of the flexible circuit board 42 is electrically connected to the second interface 432 of the TFT circuit driving module 43, so as to achieve the effect of supplying power to the TFT circuit driving module 43.
Specifically, the interface types of the first interface 421 and the second interface 431 need to be the same, for example, the interfaces of pin type.
In order to reduce the loss of the ultrasonic wave during the transmission process, the ultrasonic wave generating structure 44 needs to be disposed at the uppermost part of the entire ultrasonic wave generating assembly 400, that is, the TFT circuit driving module 43 is far away from the side of the supporting plate 41, so as to avoid the transmission loss of the ultrasonic wave caused by different transmission media during the transmission process.
The ultrasonic wave generation assembly that this application embodiment provided includes: a support plate; the flexible circuit board is arranged on the supporting plate and is provided with a first interface; the TFT circuit driving module is arranged on the driving flexible circuit board, and a second interface is reserved on the TFT circuit driving module and is used for being electrically connected with the first interface; and one side of the TFT circuit driving module, which is far away from the supporting plate, is provided with an ultrasonic wave generating structure, and the ultrasonic wave generating structure is used for being driven by the TFT circuit driving module so as to generate ultrasonic waves. Based on this, the ultrasonic wave generating structure is driven by the TFT circuit driving module to generate ultrasonic waves, so that a user can touch the 3D model.
In some embodiments, the TFT circuit driving module 43 includes a TFT circuit carrier film 432, a TFT transmitting circuit 433, and a TFT circuit driving structure 434 stacked from bottom to top, and the second interface 431 is disposed on the TFT circuit driving structure 434 to receive a driving signal of the flexible circuit board 42 through the TFT circuit driving structure 434 to drive the ultrasonic wave generating structure 44.
Wherein the TFT circuit carrier film 432 is for carrying the TFT emitting circuit 433, and the TFT circuit driving structure 434 is driven by the TFT emitting circuit 433, so that the ultrasonic wave generating structure 44 provided on the TFT circuit driving structure 434 generates ultrasonic waves.
In some embodiments, the TFT circuit carrier film 432 is composed of a high temperature resistant organic material.
The organic series high temperature resistant material can be organosilicon as carrier, and its highest temperature can not exceed 400 deg.C, and above this temperature carbonization or softening can occur.
In some embodiments, the driving frequency of the TFT circuit driving structure driving the ultrasonic wave generating structure is 40 kHz-80 kHz.
Fig. 6 is a schematic structural diagram of a TFT circuit according to an embodiment of the present application, and fig. 7 is a schematic waveform diagram of the TFT circuit in the driving process according to an embodiment of the present application, as shown in fig. 6 and 7.
Specifically, gate is a switching voltage, S is a source output driving voltage, and D is a drain output. The frequency of the ultrasonic wave used is >40kHz, so the square wave signal frequency 80khz.cs at the gate end is the voltage sustaining capacitor, the actual charge reaches the top and the time t is related, so the waveform at the D end is similar to the sine wave t1 as shown in fig. 7, which is the capacitor sustaining voltage time.
In some embodiments, a transmission cavity 45 is further disposed on the ultrasonic wave generating structure 44, and the transmission cavity 45 is used for transmitting the ultrasonic wave generated by the ultrasonic wave generating structure 44.
Referring to fig. 8, fig. 8 is a schematic diagram of a second structure of an ultrasonic generating assembly according to an embodiment of the present application. The purpose of providing the transmission cavity 45 on the ultrasonic wave generating structure 44 is to minimize the transmission of ultrasonic waves in the air, thereby ensuring that the loss of ultrasonic waves is reduced during the transmission process.
In some embodiments, the ultrasound generating structure is comprised of polyvinylidene fluoride material.
In which the ultrasonic wave generating structure 44 may be configured to be composed of a polyvinylidene fluoride material since the polyvinylidene fluoride (PVDF) material generates a high-frequency sound wave in a specific direction under the driving of an alternating voltage of a certain frequency.
In some embodiments, an optical adhesive 46 is disposed between the support plate 41 and the flexible circuit board 42, and an optical adhesive 46 is disposed between the flexible circuit board 42 and the TFT circuit driving module 43.
Wherein the optical cement (cement for optical parts) is a polymer substance which has optical properties similar to those of optical parts and has excellent cementing properties. It can glue two or more optical parts into an optical component which can meet the design requirement of the optical path; or it is used to achieve the gluing of the protective glass of the high-precision optical scale, the optical filter and the like.
The optical cement may include a silicone gel optical silicone rubber cement and a photo-curable cement. The organic silicon gel optical organic silicon rubber adhesive is an organic silicon elastomer, and is prepared by reacting vinyl dimethyl siloxane and methyl vinyl siloxane with hydrogen-containing siloxane compound under the catalytic action of chloroplatinic acid. The cured silicone rubber has high adhesion to glass, high transparency, light transmittance over 90%, refractive index of 1.41 and use temperature of-55-100 deg.c, and is used mainly in organic adhesive layer and adhesive optical lens of bulletproof glass for plane, especially ultraviolet light transparent thin optical part and planar optical part.
The photo-curing adhesive is composed of photosensitive resin, cross-linking agent, photosensitive agent and modifier, and is prepared through curing reaction under the irradiation of ultraviolet or visible light. The adhesive is mainly acrylic resin, can be quickly bonded in a shortened time, has good mechanical property, chemical stability, weather resistance and the like, has a refractive index of about 1.56 after curing, and is a promising optical adhesive.
In some embodiments, the material density of the transmission cavity 45 in the ultrasonic wave generating assembly 400 is the same as the material density of the display screen 11, and the material acoustic refraction-reflection rate of the transmission cavity 45 in the ultrasonic wave generating assembly 400 is the same as the material acoustic refraction-reflection rate of the display screen 11.
The material characteristics of the transmission cavity 45 are required to be consistent with those of the display screen 11, so that loss of the ultrasonic waves in the transmission process can be reduced, and the material characteristics can specifically include characteristics such as refractive index, reflectivity, material density and the like of the acoustic waves, which are not limited herein.
In summary, the ultrasonic generating assembly provided in the embodiment of the present application includes: a support plate; the flexible circuit board is arranged on the supporting plate and is provided with a first interface; the TFT circuit driving module is arranged on the driving flexible circuit board, and a second interface is reserved on the TFT circuit driving module and is used for being electrically connected with the first interface; and one side of the TFT circuit driving module, which is far away from the supporting plate, is provided with an ultrasonic wave generating structure, and the ultrasonic wave generating structure is used for being driven by the TFT circuit driving module so as to generate ultrasonic waves. Based on this, the ultrasonic wave generating structure is driven by the TFT circuit driving module to generate ultrasonic waves, so that a user can touch the 3D model.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The foregoing describes in detail an ultrasonic wave generating assembly and a display panel provided in the embodiments of the present application, and specific examples are applied to illustrate the principles and embodiments of the present application, and the description of the foregoing examples is only used to help understand the technical solution and core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. An ultrasonic wave generating assembly, comprising:
a support plate;
the flexible circuit board is arranged on the supporting plate and is provided with a first interface;
the TFT circuit driving module is arranged on the flexible circuit board, and a second interface is reserved on the TFT circuit driving module and is used for being electrically connected with the first interface; wherein,
an ultrasonic wave generating structure is arranged on one side, far away from the supporting plate, of the TFT circuit driving module and is used for being driven by the TFT circuit driving module so as to generate ultrasonic waves;
the TFT circuit driving module comprises a TFT circuit bearing film, a TFT emitting circuit and a TFT circuit driving structure which are arranged in a stacked manner from bottom to top, and the second interface is arranged on the TFT circuit driving structure to receive driving signals of the flexible circuit board through the TFT circuit driving structure so as to drive the ultrasonic wave generating structure;
the TFT circuit bearing film is used for bearing the TFT transmitting circuit, and the TFT circuit driving structure is driven by the TFT transmitting circuit, so that the ultrasonic wave generating structure arranged on the TFT circuit driving structure generates ultrasonic waves.
2. The ultrasonic wave generating assembly of claim 1, wherein the TFT circuit carrier film is comprised of a high temperature resistant organic material.
3. The ultrasonic wave generating assembly of claim 1, wherein the TFT circuit driving structure drives the ultrasonic wave generating structure at a driving frequency of 40khz to 80khz.
4. The ultrasonic wave generation assembly of claim 1, wherein a transmission cavity is further provided on the ultrasonic wave generation structure, the transmission cavity being for transmitting ultrasonic waves generated by the ultrasonic wave generation structure.
5. The ultrasonic wave generating assembly of claim 1, wherein the ultrasonic wave generating structure is comprised of polyvinylidene fluoride material.
6. The ultrasonic wave generation assembly of claim 1, wherein an optical adhesive is disposed between the support plate and the flexible circuit board, and an optical adhesive is disposed between the flexible circuit board and the TFT circuit drive module.
7. An electronic device, comprising:
a light emitting panel comprising a display screen;
an ultrasonic wave generating assembly disposed on the display screen, and the ultrasonic wave generating assembly is an ultrasonic wave generating assembly according to any one of claims 1 to 6.
8. The electronic device of claim 7, wherein the ultrasound generating assemblies are arranged in an array on the display screen.
9. The electronic device of claim 7, wherein a material density of the transmission cavity in the ultrasound generating assembly is the same as a material density of the display screen, and a material acoustic refraction reflectivity of the transmission cavity in the ultrasound generating assembly is the same as a material acoustic refraction reflectivity of the display screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210055178.0A CN114442807B (en) | 2022-01-18 | 2022-01-18 | Ultrasonic wave generating assembly and electronic equipment |
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| CN202210055178.0A CN114442807B (en) | 2022-01-18 | 2022-01-18 | Ultrasonic wave generating assembly and electronic equipment |
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| CN107589847A (en) * | 2017-09-20 | 2018-01-16 | 京东方科技集团股份有限公司 | Ultrasonic wave touch feedback display device, manufacture method and display system |
| CN108805044A (en) * | 2018-05-25 | 2018-11-13 | 京东方科技集团股份有限公司 | Display screen and its array substrate and fingerprint identification method, electronic equipment |
| WO2019223695A1 (en) * | 2018-05-25 | 2019-11-28 | 京东方科技集团股份有限公司 | Display screen, array substrate and fingerprint recognition method therefor, and electronic equipment |
| CN110046556A (en) * | 2019-03-27 | 2019-07-23 | 武汉华星光电技术有限公司 | A kind of display panel and its terminal part |
| CN210573083U (en) * | 2019-11-25 | 2020-05-19 | 京东方科技集团股份有限公司 | Display module assembly and holographic display device |
| CN111460904A (en) * | 2020-03-05 | 2020-07-28 | 南昌欧菲生物识别技术有限公司 | Ultrasonic detection module, detection method and device thereof and electronic equipment |
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