CN115348514A - Efficient single-track directional sounding ultrasonic screen and manufacturing process thereof - Google Patents
Efficient single-track directional sounding ultrasonic screen and manufacturing process thereof Download PDFInfo
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- H—ELECTRICITY
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- H04R19/00—Electrostatic transducers
- H04R19/005—Electrostatic transducers using semiconductor materials
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- H—ELECTRICITY
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- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/02—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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Abstract
The invention discloses an efficient single-track directional sounding ultrasonic screen and a manufacturing process thereof, wherein the ultrasonic screen comprises a vibration layer and a non-vibration layer which are stacked up from top to bottom, conductive patterns are correspondingly arranged on the vibration layer and the non-vibration layer, each conductive pattern comprises a frame pasting area and a conductive area, the frame pasting area is positioned at the outer edge of the conductive area, the conductive area comprises a non-vibration area and a vibration area, the vibration area and the non-vibration area are insulated and isolated, the non-vibration area is loaded with a bias voltage for enabling the vibration layer to move downwards, the vibration area is loaded with a bias voltage for enabling the vibration layer to move downwards and an alternating voltage for enabling the vibration layer to vibrate upwards and downwards, and the vibration area vibrates and sounds under the action of the alternating voltage. According to the invention, the effective sound production area is arranged on the screen, so that the power consumption required by the whole screen sound production system is reduced under the condition of ensuring the sound pressure level of the screen sound production, and the service life of the whole product is prolonged.
Description
Technical Field
The invention relates to the technical field of directional sounding, in particular to an efficient single-track directional sounding ultrasonic screen and a manufacturing process thereof.
Background
The display device is ultra-thin, has a narrow frame, and even is designed in a full screen mode, and the space reserved for the sound production device is smaller and smaller. The conventional sound generating device is large in size, the installation position is limited, and a proper position and space are difficult to be provided in a new generation of display devices. Therefore, there is a need to redesign a sound emitting device capable of adapting to the requirements of the current display device.
Some manufacturers of display devices design a mode of making sound by using a screen, and the screen sound making technology is taken as a surface audio technology, so that a new solution is provided for the sound of multimedia audio-visual equipment. At present, a transparent screen directional loudspeaker combining a display device and a screen sounding device is under development, the self vibration of a screen is used as the loudspeaker, the resonant cavity space of the traditional loudspeaker is saved, and meanwhile, the directional propagation characteristic meets the privacy requirement of personal electronic equipment and the non-interfering requirement of public equipment.
The sound production area of the existing screen sound production device produces sound on the whole surface, namely the sound production area occupies the visible area of the whole screen and is 1, and the design has higher sound production efficiency for a small screen with the size of below 14 inches. However, for a large screen with a size larger than 14 inches, if a design that sounds throughout the entire visible area is adopted, if the sound pressure level is the same as that of a small screen below 14 inches, the power consumption of the large screen is much higher than that of the small screen, and the power consumption of the system is increased by the magnitude order, so that the service life of the product is reduced.
How to reduce the overall sounding power consumption of a large screen under the condition of ensuring the sound pressure level of a screen sounding device is one of the problems to be solved.
The invention content is as follows:
the invention aims to provide an efficient single-channel directional sounding ultrasonic screen and a manufacturing process thereof.
In order to achieve the above object, in one aspect, the present invention provides an efficient mono-channel directional sounding ultrasonic screen, including a vibrating layer and a non-vibrating layer stacked up and down, wherein the vibrating layer and the non-vibrating layer are both provided with a conductive pattern, the conductive pattern includes a frame pasting region and a conductive region, the frame pasting region is located at an outer edge of the conductive region, the conductive region includes a non-vibrating region and a vibrating region, the vibrating region and the non-vibrating region are isolated from each other, the non-vibrating region is loaded with a bias voltage for moving the vibrating layer down, the vibrating region is loaded with a bias voltage for moving the vibrating layer down and an ac voltage for vibrating the vibrating layer up and down, and the vibrating region vibrates and sounds under the action of the ac voltage; the vibration region is arranged on the visible region of the ultrasonic screen and is arranged along the edge of at least one edge of the invisible region, and the vibration region is electrically connected with the vibration conductive layer through a conductive circuit led out by the vibration conductive layer.
In a preferred embodiment, the vibration area is located at the center of the ultrasonic screen, the edge of the vibration area leads out the conductive circuit to be electrically connected with the vibration edge routing, and the non-vibration area is divided into at least two non-vibration sub-areas by the conductive circuit.
In a preferred embodiment, each of the non-vibrating sub-regions includes a non-vibrating conductive layer and a non-vibrating edge trace, and the non-vibrating edge trace is disposed along an edge of at least one side of the non-vibrating conductive layer.
In a preferred embodiment, the non-vibrating edge trace is disposed on at least one outer edge of the non-vibrating conductive layer near the frame attachment area.
In a preferred embodiment, the wire resistance of both the vibrating edge trace and the non-vibrating edge trace is less than 3 ohms.
In a preferred embodiment, the vibrating conductive layer and the non-vibrating conductive layer are in a laminated structure of a conductive material layer and a metal grid.
In a preferred embodiment, the area of the vibrating conductive layer bordering on the non-vibrating conductive layer, the area of the non-vibrating conductive layer bordering on the vibrating edge trace and the area of the non-vibrating conductive layer bordering on the conductive circuit all form a non-conductive layer area, and are insulated and isolated by the non-conductive layer area.
In a preferred embodiment, the width of the non-conductive layer region is below 5um.
In a preferred embodiment, the directional sound production ultrasonic screen includes substrate layer, first conducting layer, insulating layer, interval structure, second conducting layer and vibration substrate layer, non-vibration layer includes substrate layer and first conducting layer, first conducting layer set up in on the up end of substrate layer, just be formed with on the first conducting layer the conducting pattern, the vibration layer is including vibration substrate layer and second conducting layer, the second conducting layer set up in on the lower terminal surface of vibration substrate layer, just also be formed with on the second conducting layer the conducting pattern, the insulating layer set up in on the upper surface of first conducting layer or set up on the lower surface of second conducting layer, interval structure sets up on the insulating layer for provide the required vibration space of vibration layer vibration.
In a preferred embodiment, the area of the vibration region is a minimum of 12 to 15 inches.
On the other hand, the invention provides a manufacturing process of a high-efficiency single-track directional sounding ultrasonic screen,
including S1, make the non-vibration layer, include:
forming a first conducting layer on the substrate layer, and forming a conducting layer-free area on the first conducting layer, wherein the first conducting layer is separated into a first vibrating conducting layer and a first non-vibrating conducting layer by the conducting layer-free area in an insulating way;
forming an insulating layer on the first conductive layer;
forming a spacer structure on the insulating layer;
s2, manufacturing a vibration layer, comprising:
forming the second conducting layer on a vibrating substrate layer, and forming a conducting layer-free area on the second conducting layer, wherein the second conducting layer is separated into a second vibrating conducting layer and a second non-vibrating conducting layer in an insulating mode through the conducting layer-free area;
and S3, performing frame fitting on the vibration layer and the non-vibration layer.
In a preferred embodiment, the S1 further includes:
making a vibrating edge routing line, a conductive line and a non-vibrating edge routing line on the first conductive layer, wherein the vibrating edge routing line is arranged along the outer side edge of the first conductive layer and is electrically connected with the first vibrating conductive layer through the conductive line, the non-vibrating edge routing line is arranged along at least one outer edge of the first non-vibrating conductive layer, and then making an edge insulating layer on the vibrating edge routing line, the conductive line and the non-vibrating edge routing line;
the S2 further comprises:
the non-vibration edge routing line is arranged along at least one outer edge of the second non-vibration conducting layer, and then an edge insulating layer is arranged on the vibration edge routing line, the conducting circuit and the non-vibration edge routing line.
Compared with the prior art, the invention has the following beneficial effects:
the visual area of the screen is set in a partition mode and is divided into a sound producing area and a non-sound producing area, and the effective sound producing area is set on the screen, so that the power consumption required by the whole screen sound producing system is reduced under the condition that the sound pressure level of the screen sound is guaranteed, and the service life of the whole product is prolonged. And the present invention sets the sound emitting area to 1 so that the screen can be rendered monaural.
Description of the drawings:
FIG. 1 is a schematic view of an ultrasonic screen according to the present invention in its entirety;
FIG. 2 is a schematic structural diagram of a conductive pattern on a first conductive layer or a second conductive layer according to the present invention;
fig. 3 is a schematic sectional structure view of the ultrasonic screen of the present invention.
The reference signs are:
1. non-sound-emitting area, 2, sound-emitting area, 3, vibration layer, 31, vibration substrate layer, 32, second conducting layer, 321, second frame patch, 322, second vibration conducting layer, 323, second non-vibration conducting layer, 324, non-conducting layer area, 4, non-vibration layer, 41, substrate layer, 42, first conducting layer, 421, first frame patch, 422, first vibration conducting layer, 423, first non-vibration conducting layer, 424, non-conducting layer area, 425, conducting circuit, 426, first sub-non-vibration conducting layer, 43, first insulating layer, 44, spacing structure, 45, edge wire, 46, edge insulating layer.
The specific implementation mode is as follows:
the following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations such as "comprises" or "comprising", etc., will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
According to the efficient single-track directional sounding ultrasonic screen, the visual area of the screen is divided into the sounding area and the non-sounding area, and the effective sounding area is arranged on the screen, so that the power consumption required by the whole screen sounding system is reduced under the condition that the sound pressure level of the screen sounding is ensured, and the service life of the whole product is prolonged.
As shown in fig. 1, the efficient mono directional sounding ultrasonic screen disclosed by the present invention comprises a non-sounding region 1 and a sounding region 2, wherein, in order to ensure that the sound pressure level of the system meets the requirements of the market and various scenes, the minimum area of the effective sounding area (i.e. sounding region) is ensured to be 12-15 inches no matter how large the screen is.
In practice, the number of the sound emitting areas 2 may be 1 or more, when the number of the sound emitting areas is 1, the sound emitting area of the screen is monaural, the position of the sound emitting area 2 in the whole screen is not limited, and the sound emitting area is preferably arranged at the middle position of the screen, namely, the sound emitting area is arranged concentrically with the screen, of course, the sound emitting area may also be arranged at a position deviated from the middle position of the screen, such as the upper left corner or the upper right corner of the screen, or the middle position but arranged on the left or right side, and the like, and the shape of the sound emitting area 2 is also not limited, such as a rectangular area or a circular area, and the like; when there are a plurality of the sound emitting regions 2, the screen may emit stereo sound or may emit monaural sound, and the distribution positions of the plurality of sound emitting regions 2 on the screen are not limited, and when there are two sound emitting regions 2, the sound emitting regions may be distributed symmetrically about the central axis of the screen, or may be distributed symmetrically along the diagonal line of the screen. In this embodiment, the sounding zone 2 is set to be 1 and is located at the center of the screen.
Specifically, referring to fig. 3, the efficient mono-directional sounding ultrasonic screen disclosed in the embodiment of the present invention includes a vibration layer 3 and a non-vibration layer 4, where the non-vibration layer 4 specifically includes a substrate layer 41 and a first conductive layer 42, the substrate layer 41 may be made of glass, the first conductive layer 42 is disposed on an upper end surface of the substrate layer 41, and the first conductive layer 42 may be an ITO (indium tin oxide) conductive layer. Different from the prior art that the first conductive layer 42 is disposed on the entire surface of the substrate layer 41, in order to form the screen with the above-mentioned sound emitting area 2 and the non-sound emitting area 1, the first conductive layer 42 is provided with a first conductive pattern, as shown in fig. 2, the first conductive pattern includes a first frame attaching area 421 and a first conductive area, wherein the first frame attaching area 421 is disposed around the outer edge of the first conductive area, and is used for frame attaching with the vibration layer 3, the first frame attaching area 421 is located in the non-visible area of the entire screen, and the first frame attaching area 421 has no conductive layer, i.e., it is non-conductive and is mainly used for frame attaching with the vibration layer 3.
The first conductive area includes a first vibrating conductive layer 422 and a first non-vibrating conductive layer 423. In this embodiment, the first vibrating conductive layer 422 can be disposed at any position of the first conductive area as required, in this embodiment, the first vibrating conductive layer 422 is disposed at the middle of the first conductive area, and the first non-vibrating conductive layer 423 is formed at other first conductive areas outside the periphery of the first vibrating conductive layer 422. The area bordering the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423 is isolated by a non-conductive layer area 424, and in particular, the non-conductive layer area 424 may be formed, for example, by etching or lasering away the conductive layer in the area bordering the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423, thereby isolating the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423. In this embodiment, the conductive layer around the first vibrating conductive layer 422 is etched or laser-etched to form the non-conductive region 424.
The lower the width of the non-conductive layer region, the less visually visible, and in particular embodiments, the width of the non-conductive layer region is typically less than 5um. The number of the first vibrating conductive layers 423 corresponds to the number of the sound emitting areas 2, and if the sound emitting areas 2 are one, the first vibrating conductive layers 422 are provided one for each. In practice, since the conductive material exhibits an opposite contradictory state between conductivity and optics in the current screen display field, that is, the conductive material has a poorer optical effect and a better conductive effect, but the screen visibility of the present invention needs to be high, the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423 preferably adopt a laminated structure of a superconducting whole conductive material layer and a metal mesh to ensure that the overall average sheet resistance of the first conductive layer 42 is the lowest.
In addition, considering that the first vibration conduction layer 422 is disposed at the middle area of the first conduction region, it is preferable to attach an FPC by guiding the first vibration conduction layer 422 to the outer edge of the first conduction region in order not to affect the visual effect of the screen. In this embodiment, specifically, a conductive trace 425 is led out from each of the four sides of the first vibrating conductive layer 422 to each corresponding side of the first conductive region. In practice, the conductive traces 425 may be formed directly from portions of the first non-vibrating conductive layer 423. Because of the existence of the conductive traces 425, it is necessary to isolate the first non-vibrating conductive layer 423 from the conductive traces 425, specifically, the area where the first non-vibrating conductive layer 423 borders the conductive traces 425 is etched to form a non-conductive layer area. In addition, a non-conductive layer region is etched at a position where the first non-vibrating conductive layer 423 contacts with the edge of the first conductive region, in order to isolate the first non-vibrating conductive layer 423 from the edge trace 45 in a later stage, that is, the first non-vibrating conductive layer 423 is divided into four first sub-non-vibrating conductive layers 426 by four conductive lines, and a non-conductive layer region is etched on the periphery of each first sub-non-vibrating conductive layer 426. During processing, a whole conductive layer is plated on the substrate layer 41, and then a non-conductive layer area 424 is etched on the conductive layer according to the first conductive pattern, wherein the non-conductive layer area 424 divides the conductive layer into a first frame attaching area 421, four first sub-non-vibration conductive layers 426 and a first vibration conductive layer 422. Of course, in other embodiments, if the edge trace can be made transparent, that is, without affecting the light transmittance of the whole screen, the edge trace 45 can be directly made on the edge of the first vibrating conductive layer 422 and the edge trace 45 can be directly made on the edge of the first non-vibrating conductive layer 423, so that only the non-conductive layer region 424 is made in the region where the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423 are in contact with each other, and only the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423 are isolated from each other.
Preferably, as shown in fig. 2, in order to insulate the vibration layer 3 from the non-vibration layer 4, a first insulating layer 43 may be formed on the entire surface of the first conductive layer 42.
In addition, the efficient mono-channel directional sounding ultrasonic screen of the present invention further includes a spacing structure 44, in implementation, the spacing structure 44 may be disposed on the non-vibration layer 4 or on the vibration layer 3, preferably on the vibration layer 3, and specifically, the spacing structure 44 may be disposed on the first insulating layer 43, which may be a plurality of raised bumps arranged in an array, and is disposed between the vibration layer 3 and the non-vibration layer 4 for providing an air gap required by the vibration layer 3 to vibrate.
In addition, in order to increase the conductivity of the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423, edge traces 45 may be disposed at the edges of the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423, in implementation, the edge traces 45 may be made of silver paste or copper, and the lower the line resistance, the better. However, since silver paste or copper in the market can affect the visibility of the screen to a greater or lesser extent, it is preferable to dispose the edge trace 45 close to the non-visible area of the screen, for example, the edge trace 45 is disposed on the first vibrating conductive layer 422 and the first non-vibrating conductive layer 423 close to the outer edge of the non-visible area, the lower the line resistance of the edge trace 45 is, the better the line resistance is, and in one embodiment, the head-to-tail line resistance of the edge trace 45 is preferably lower than 3 ohms. Specifically, in this embodiment, in order not to affect the visualization effect of the whole screen, the edge routing lines 45 of the first vibrating conductive layer 422 are disposed at the peripheral edge of the first conductive area, specifically at the inner side of the first frame region 421, and the edge routing lines 45 of the first non-vibrating conductive layer 423 are disposed at the outer edge of each first sub-non-vibrating conductive layer 426 near the first frame region 421, which is disposed to enhance the conductivity of the first sub-non-vibrating conductive layer 426 and avoid affecting the visualization effect of the screen. As described above, if the edge traces can be made transparent, i.e. without affecting the light transmission of the whole screen, the edge traces can be made directly at the edge of the first vibrating conductive layer 422 and the edge traces can be made directly at the edge of the first non-vibrating conductive layer 423.
An edge insulating layer 46 may be formed on the edge wire 45, and after the insulating layer is formed, the edge wire 45 is bonded to the FPC.
The vibration layer 3 specifically includes a vibration substrate layer 31 and a second conductive layer 32, in implementation, the vibration substrate layer 31 may be, but is not limited to, a PET film, the second conductive layer is disposed 32 on a lower surface of the vibration substrate layer 31, and corresponds to the first conductive layer 42, the second conductive layer 32 is also provided with a second conductive pattern that is the same as that on the first conductive layer 42, the second conductive pattern includes a second frame attaching region 321 and a second conductive region, similarly, the second frame attaching region 321 is disposed at an outer edge of the second conductive region in a circle for frame attaching to the non-vibration layer 4, the second frame attaching region 321 is located in a non-visible region of the whole screen, and the second frame attaching region 321 has no conductive layer, that is, is non-conductive, and is mainly used for frame attaching to the vibration layer 3; the second conductive area includes at least a second vibrating conductive layer 322 and a second non-vibrating conductive layer 323, and the area bordered by the second vibrating conductive layer 322 and the second non-vibrating conductive layer 323 is insulated by a non-conductive layer area 324. The number of the second vibration conduction layers 322 corresponds to the number of the sound-emitting areas 2. In addition, for other descriptions of the second conductive layer 32, reference may be made to the description of the first conductive layer 42, which is not repeated herein.
The difference between the non-vibration layer 4 and the vibration substrate layer 31 is that after the second conductive layer 32 and the edge wiring on the second conductive layer 32 are arranged, the insulating layer and the spacing structure 44 do not need to be arranged, but an edge insulating layer is arranged on the edge wiring, and an FPC (not shown) is bound after the edge insulating layer is manufactured.
The vibration layer 3 and the non-vibration layer 4 are frame-bonded, specifically, the first frame bonding region 421 and the second frame bonding region 321 of the first conductive layer 42 are frame-bonded by using, for example, a glue. Before the attaching, the vibration layer can be tensioned by a corresponding tensioning process or a tensioning clamp and then attached to the non-vibration layer. After bonding, the vibration layer 3 and the non-vibration layer 4 form a non-sound-emitting region 1 and a sound-emitting region 2. Because the minimum area of one sound-emitting area 2 is 12-15 inches, if the number of the sound-emitting areas 2 is 1, the size of the whole ultrasonic screen is not less than 12-15 inches, if the number of the sound-emitting areas 2 is two, the size of the whole ultrasonic screen is not less than 24-30 inches, and so on.
During driving, the sound-emitting area 2 and the non-sound-emitting area 1 are loaded with bias voltage, so that the vibration layers 3 of the two areas can move downwards relative to the non-vibration layer 4, and the downward movement distance is less than 5um during implementation. Then, an alternating voltage is provided to the sounding zone 2, so that the vibrating layer 3 of the sounding zone 2 can vibrate up and down relative to the non-vibrating layer 4 to sound, i.e. a sounding zone is formed. The non-sound-emitting region 1 is provided with only a bias voltage, so that it does not emit sound, i.e., the non-sound-emitting region 1 is formed.
The invention has the advantages that the visual area of the screen is set in a subarea manner and is divided into a sound producing area and a non-sound producing area, and the effective sound producing area is set on the screen, so that the power consumption required by the whole screen sound producing system is reduced under the condition of ensuring the sound pressure level of the screen sound production, and the service life of the whole product is prolonged. And the present invention sets the sound emitting area to 1 so that the screen can be rendered monaural.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. An efficient single-track directional sounding ultrasonic screen is characterized in that the directional sounding ultrasonic screen comprises a vibrating layer and a non-vibrating layer which are stacked up from top to bottom, conductive patterns are correspondingly arranged on the vibrating layer and the non-vibrating layer, each conductive pattern comprises a frame pasting area and a conductive area, the frame pasting area is located on the outer edge of the conductive area, each conductive area comprises a non-vibrating area and a vibrating area, the vibrating area and the non-vibrating area are insulated and isolated, a bias voltage enabling the vibrating layer to move downwards is loaded on the non-vibrating area, a bias voltage enabling the vibrating layer to move downwards and an alternating voltage enabling the vibrating layer to vibrate upwards and downwards are loaded on the vibrating area, and the vibrating area vibrates to sound under the action of the alternating voltage; the vibration region is arranged on the visible region of the ultrasonic screen and is arranged along the edge of at least one edge of the invisible region, and the vibration region is electrically connected with the vibration conductive layer through a conductive circuit led out by the vibration conductive layer.
2. An efficient mono directional sound production ultrasonic screen as recited in claim 1, wherein said vibration region is located at the center of the ultrasonic screen, and the edge of said vibration region is led out of said conductive circuit and electrically connected to the vibration edge trace, and said non-vibration region is divided into at least two non-vibration sub-regions by said conductive circuit.
3. A high efficiency mono directional sounding ultrasound screen as claimed in claim 2, wherein each of said non-vibrating subregions comprises a non-vibrating conductive layer and a non-vibrating edge trace disposed along an edge of at least one side of the non-vibrating conductive layer.
4. The high efficiency mono directional sound production ultrasound screen according to claim 3, wherein the non-vibrating edge traces are disposed on at least one outer edge of the non-vibrating conductive layer proximate to the frame patch.
5. The high efficiency mono directional sounding ultrasound screen of claim 4, wherein the wire resistance of both the vibrating edge traces and the non-vibrating edge traces is below 3 ohms.
6. A high efficiency mono directional sounding ultrasonic screen as claimed in claim 3 wherein the area of the vibrating conductive layer bordering the non-vibrating conductive layer, the area of the non-vibrating conductive layer bordering the vibrating border trace and the area of the non-vibrating conductive layer bordering the conductive trace all form a non-conductive layer area, isolated by said non-conductive layer area.
7. An efficient mono directional sounding ultrasound screen as claimed in claim 6, wherein the width of the non-conductive layer area is below 5um.
8. The efficient mono directional sound production ultrasonic screen of claim 6, wherein the directional sound production ultrasonic screen comprises a substrate layer, a first conductive layer, an insulating layer, a spacing structure, a second conductive layer and a vibration substrate layer, the non-vibration layer comprises the substrate layer and the first conductive layer, the first conductive layer is disposed on the upper end surface of the substrate layer, the conductive pattern is formed on the first conductive layer, the vibration layer comprises a vibration substrate layer and a second conductive layer, the second conductive layer is disposed on the lower end surface of the vibration substrate layer, the conductive pattern is also formed on the second conductive layer, the insulating layer is disposed on the upper surface of the first conductive layer or disposed on the lower surface of the second conductive layer, the spacing structure is disposed on the insulating layer for providing a vibration space required for vibration of the vibration layer.
9. A process for manufacturing a high efficiency mono directional sounding ultrasound screen according to claim 8, wherein the process comprises:
s1, manufacturing a non-vibration layer, comprising:
forming a first conducting layer on the substrate layer, and forming a non-conducting layer area on the first conducting layer, wherein the first conducting layer is divided into a first vibrating conducting layer and a first non-vibrating conducting layer in an insulating mode through the non-conducting layer area;
forming an insulating layer over the first conductive layer;
forming a spacer structure on the insulating layer;
s2, manufacturing a vibration layer, comprising:
forming a second conductive layer on a vibration substrate layer, and forming a non-conductive layer area on the second conductive layer, wherein the second conductive layer is divided into a second vibration conductive layer and a second non-vibration conductive layer by the non-conductive layer area in an insulation manner;
and S3, carrying out frame fitting on the vibration layer and the non-vibration layer.
10. The process of claim 9, wherein S1 further comprises:
making a vibrating edge routing, a conductive circuit and a non-vibrating edge routing on the first conductive layer, wherein the vibrating edge routing is arranged along the outer side edge of the first conductive layer and is electrically connected with the first vibrating conductive layer through the conductive circuit, the non-vibrating edge routing is arranged along at least one outer edge of the first non-vibrating conductive layer, and then making an edge insulating layer on the vibrating edge routing, the conductive circuit and the non-vibrating edge routing;
the S2 further comprises:
the non-vibration edge routing line is arranged along at least one outer edge of the second non-vibration conducting layer, and then an edge insulating layer is arranged on the vibration edge routing line, the conducting circuit and the non-vibration edge routing line.
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| CN115348514B (en) | 2024-07-05 |
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