CN215420759U - Display device capable of directionally sounding - Google Patents
Display device capable of directionally sounding Download PDFInfo
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- CN215420759U CN215420759U CN202121649653.4U CN202121649653U CN215420759U CN 215420759 U CN215420759 U CN 215420759U CN 202121649653 U CN202121649653 U CN 202121649653U CN 215420759 U CN215420759 U CN 215420759U
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Abstract
The utility model discloses a directional sounding display device which comprises a display panel and a sounding assembly, wherein the display panel comprises a first polaroid and a display panel body, the display panel body comprises a first glass substrate, the sounding assembly comprises a first conducting layer, a plurality of supporting points and a second conducting layer, the first conducting layer is arranged on the bottom surface of the first polaroid, the second conducting layer is arranged on the top surface of the first glass substrate, the supporting points are arranged between the first conducting layer and the second conducting layer, and the first polaroid vibrates in response to the application of an electric signal so as to transmit modulated ultrasonic waves into the air. The utility model realizes the integration of the screen directional sounding structure and the display panel, realizes the directional sounding and simultaneously realizes the lighter and thinner sounding screen.
Description
Technical Field
The utility model relates to the technical field of display screen sounding, in particular to a display device capable of directionally sounding.
Background
With the development of display technology, consumers tend to favor a display device that can integrate the display screen and the playing sound perfectly, not only with the requirements of picture quality and definition, but also with the focus on the output effect of sound.
The existing sound and picture integration of the display device is realized through a screen sound production technology, and the principle is that a vibration original piece is utilized to push a screen to vibrate to produce sound. For example: the resonant screen sounding scheme is that a device with vibration characteristic is attached below a screen or on a middle frame of the whole machine, and the device vibrates during working, so that the screen is driven to vibrate and sound; another example is: the direct-push screen sounding scheme has the advantages that the device is mainly composed of two parts, one part is directly attached to the screen, the other part is fixed to the middle frame, when the device works, the two parts can generate attractive force or repulsive force of interaction, so that the screen is pushed to vibrate and sound, and compared with a resonance screen sounding scheme, the conversion efficiency is improved.
However, with the development of ultra-thin, narrow bezel, and even full screen designs of display devices, the space left for the sound generating device in the display device is getting smaller. Since the volume of the typical sound generating device is generally large, it is difficult to realize an integrated design with the display panel.
The utility model has the following contents:
the utility model aims to provide a directional sounding display device which integrates a directional sounding device into a display panel.
In order to achieve the above object, in one aspect, the present invention provides a directional sound-emitting display device, including a display panel and a sound-emitting assembly, where the display panel includes a first polarizer and a display panel body, the display panel body includes a first glass substrate located at an outermost layer, the sound-emitting assembly is disposed between the first polarizer and the first glass substrate, the sound-emitting assembly includes a first conductive layer, a plurality of support points, and a second conductive layer, the first conductive layer is disposed on a bottom surface of the first polarizer, the second conductive layer is disposed on a top surface of the first glass substrate, the support points are disposed between the first conductive layer and the second conductive layer, and the first polarizer vibrates in response to application of an electrical signal to emit modulated ultrasonic waves into air.
In a preferred embodiment, the display panel is an LCD or LED display panel, the display panel body further includes a liquid crystal layer, a second glass substrate, a second polarizer and a backlight module, the liquid crystal layer is located between the first glass substrate and the second glass substrate, and the second polarizer is located between the second glass substrate and the backlight module.
In a preferred embodiment, the display panel is an OLED display panel, and the display panel body further includes an anode, a cathode, and an organic material coating layer between the anode and the cathode, wherein the anode is located between the first glass substrate and the organic material coating layer.
In a preferred embodiment, when the display panel is an OLED display panel, the first polarizer is a circular polarizer.
In a preferred embodiment, the display panel body is formed with a plurality of pixels distributed in a rectangular array, and the supporting points are located in gaps formed between the pixels.
In a preferred embodiment, the supporting points are in or approximately in the shape of a cross, and the cross-shaped supporting points are positioned in gaps formed among four pixels distributed in a quadrilateral shape.
In a preferred embodiment, the supporting point is in a shape of a long strip or approximately in a long strip, and the long strip-shaped supporting point is located between two adjacent rows of pixels or two adjacent columns of pixels.
In a preferred embodiment, the sound generating assembly further includes an insulating layer, the insulating layer is located between the first conductive layer and the second conductive layer, and the supporting point is disposed on the insulating layer.
In a preferred embodiment, the display device comprises a driver circuit having two inputs configured to receive an audio modulated ultrasonic carrier signal and two outputs, one of which is coupled to the first conductive layer and the other of which is coupled to the second conductive layer.
In a preferred embodiment, the bias voltage applied between the first conductive layer and the second conductive layer is 200V to 500V.
Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts the polaroid and the glass substrate of the existing display panel as the two conducting strips of the directional sounding device respectively, realizes the integration of the screen directional sounding structure and the display panel, and further realizes the lighter and thinner sounding screen. In addition, the display device can realize directional sound production, thereby realizing audio frequency orientation, listening privacy and avoiding interference to surrounding personnel.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a directional sound display device according to the present invention;
FIG. 2 is a schematic diagram of a relative position structure of a pixel and a supporting point according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a relative position structure of a pixel and a supporting point according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a relative position structure of a pixel and a supporting point according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a directional sound display device in embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of a preferred embodiment of the directional sound display device in embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of a directional sound display device according to embodiment 2 of the present invention;
fig. 8 is a schematic structural diagram of a preferred embodiment of the directional sound display device in embodiment 2 of the present invention.
The reference signs are: 1-display panel, 11-first polarizer, 12-display panel body, 121-first glass substrate, 122-pixel, 123-gap, 124-liquid crystal layer, 125-second glass substrate, 126-second polarizer, 127-backlight module, 128-anode, 129-organic material coating, 120-cathode, 2-sound component, 21-first conductive layer, 22-support point, 23-second conductive layer, 24-air gap and 25-insulating layer.
The specific implementation mode is as follows:
the following detailed description of specific embodiments of the utility model is provided, but it should be understood that the scope of the utility model is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, the directional sound-producing display device disclosed by the present invention includes a display panel 1 and a sound-producing component 2, wherein the sound-producing component 2 is integrated with the display panel 1, so as to achieve integration and thinning of the display panel 1, and the sound-producing component 2 employs an electrostatic ultrasonic speaker, so as to achieve directional sound production on a screen, improve listening privacy of a user, and avoid interference to surrounding people.
The display panel 1 includes a first polarizer 11 and a display panel body 12, wherein the first polarizer 11 is located at the outermost layer of the display panel 1, the display panel body 12 includes a first glass substrate 121 located at the outermost layer, and the sound generating component 2 is located between the first polarizer 11 and the display panel body 12, and is specifically located between the first polarizer 11 and the first glass substrate 121. The sound emitting assembly 2 specifically includes a first conductive layer 21, a plurality of support points 22 and a second conductive layer 23, wherein the first conductive layer 21 is coated on the bottom surface of the first polarizer 11, the second conductive layer 23 is coated on the top surface of the first glass substrate 121, the support points 22 are located between the first conductive layer 21 and the second conductive layer 23, specifically disposed on the first glass substrate 121, the support points 22 are used to provide an air gap 24 between the first conductive layer 21 and the second conductive layer 23, and the air gap 24 allows the first polarizer 11 to vibrate in response to the application of an electrical signal to emit modulated ultrasonic waves into the air, and self-demodulate in the air into audible sound.
Preferably, an insulating layer 25 may be further disposed between the first conductive layer 21 and the second conductive layer 23 to electrically isolate the first conductive layer 21 from the second conductive layer 23.
As shown in fig. 2 to 4, a plurality of pixels 122 are formed on the display panel body 12 and distributed in a rectangular array, and preferably, the supporting points 22 disposed on the first glass substrate 121 are located in the gaps 123 formed between the pixels 122, that is, in dark areas on the display panel body 12, so that the display effect of the display panel 1 is not affected while the directional sound emission of the display panel 1 is realized. The shape and the specific distribution position of the supporting points 22 in the pixel gaps 123 are not limited in the present invention, as long as the supporting points 22 are located in the gaps 123 between the pixels 122, i.e., are not overlapped with the pixels 122 and are not blocked. In some preferred embodiments, the supporting point 22 is in a cross shape or approximately in a cross shape, and the cross-shaped supporting point 22 is located in the gap 123 formed between the four pixels 122 distributed in a quadrilateral shape, specifically, four supporting subsections extending from the supporting point 22 along the cross shape, and each supporting subsection is located in the gap 123 between two adjacent pixels 122 in the same row or in the gap 123 between two adjacent pixels 122 in the same column, as shown in fig. 2. For another example, in some embodiments, the supporting point 22 is in a shape of a long strip or approximately a long strip, and the long strip of the supporting point 22 is located between two adjacent rows of the pixels 122 or two adjacent columns of the pixels 122, as shown in fig. 3. As another example, in some embodiments, the support point 22 is circular or approximately circular, and the circular support point 22 is located in the gap 123 formed between the four pixels 122 distributed in a quadrilateral shape, as shown in fig. 4.
In addition, the directional sound emission display device of the present invention further includes a driver circuit (not shown) having two inputs for receiving the audio-modulated ultrasonic carrier signal and two outputs, one of which is connected to the first conductive layer 21 and the other of which is connected to the second conductive layer 23, for providing electrical signals to the first polarizer 11 and the first glass substrate 121, respectively, in opposite directions. The first polarizer 11 vibrates in response to application of an electric signal to emit modulated ultrasonic waves into the air, enabling screen-directed sound emission. Preferably, the bias voltage applied between the first conductive layer 21 and the second conductive layer 23 ranges from 200V to 500V.
The polarizer on the outermost side of the display panel 1 and the glass substrate below the polarizer are respectively used as the vibrating diaphragm and the substrate which form the electrostatic ultrasonic loudspeaker, namely, the combination of the screen sounding structure and the display panel 1 structure is realized on the basis of the inherent structure of the display panel 1, so that the display panel 1 can be thinner and lighter compared with other vibration sounding screens.
In implementation, the display panel 1 may be a liquid crystal display panel LCD, a light emitting display panel LED, or an organic light emitting display panel OLED, and the specific type of the display panel 1 is not limited in the embodiment of the present invention.
The structure of the directional sound display device of the present invention will be described in detail with reference to two embodiments.
Example 1
Referring to fig. 5 and fig. 6, a directional sound display device disclosed in embodiment 1 of the present invention includes an LCD display panel and a sound generating assembly 2, wherein the LCD display panel specifically includes a first polarizer 11, a first glass substrate 121, a liquid crystal layer 124, a second glass substrate 125, a second polarizer 126, and a backlight module 127; the sound emitting assembly 2 is located between the first polarizer 11 and the first glass substrate 121, and specifically includes a first conductive layer 21, a plurality of support points 22, and a second conductive layer 23.
Wherein the first polarizer 11 is located at the outermost layer of the LCD display panel, the first conductive layer 21 is coated on the bottom surface of the first polarizer 11, the second conductive layer 23 is coated on the top surface of the first glass substrate 121, the supporting point 22 is located between the first conductive layer 21 and the second conductive layer 23, and is specifically disposed on the top surface of the first glass substrate 121, the supporting point 22 is used to provide an air gap 24 between the first conductive layer 21 and the second conductive layer 23, and the air gap 24 allows the first polarizer 11 to vibrate in response to the application of an electrical signal, so as to emit modulated ultrasonic waves into the air. The liquid crystal layer 124 is located between the first glass substrate 121 and the second glass substrate 125, and the second polarizer 126 is located between the second glass substrate 125 and the backlight module 127.
Preferably, an insulating layer 25 may be further disposed between the first conductive layer 21 and the second conductive layer 23 for electrically isolating the two conductive layers, and when the insulating layer 25 is added, the supporting point 22 is disposed on the top surface of the insulating layer 25, and the bottom surface of the insulating layer 25 is attached to the second conductive layer 23.
The liquid droplets in the liquid crystal layer 124 are contained in a fine cell structure, one or more cells constituting one pixel 122 on the LCD display panel. Preferably, the supporting points 22 are located in the gaps 123 formed between the pixels 122, i.e. in dark areas on the LCD display panel, so that the directional sound emission of the LCD display panel is realized without affecting the display effect of the LCD display panel. The shape of the supporting points 22 and the specific distribution positions in the pixel gaps 123 are not limited in the present invention, as long as the supporting points 22 are located in the gaps 123 between the pixels 122, for example, the above description may be referred to, and details are not repeated herein.
Example 2
Referring to fig. 7 and 8, a directional sound-emitting display device disclosed in embodiment 2 of the present invention includes an OLED display panel and a sound-emitting assembly 2, wherein the OLED display panel specifically includes a first polarizer 11, a first glass substrate 121, an anode 128, an organic material coating 129, and a cathode 120; the sound emitting assembly 2 is located between the first polarizer 11 and the first glass substrate 121, and specifically includes a first conductive layer 21, a plurality of support points 22, and a second conductive layer 23.
The first polarizer 11 is located at the outermost layer of the OLED display panel, and is specifically a circular polarizer; the first conductive layer 21 is coated on the bottom surface of the first polarizer 11, the second conductive layer 23 is coated on the top surface of the first glass substrate 121, the supporting point 22 is located between the first conductive layer 21 and the second conductive layer 23, and is specifically disposed on the top surface of the first glass substrate 121, the supporting point 22 is used to provide an air gap 24 between the first conductive layer 21 and the second conductive layer 23, and the air gap 24 allows the first polarizer 11 to vibrate in response to the application of an electrical signal to emit modulated ultrasonic waves into the air. The anode 128 is positioned between the first glass substrate 121 and the organic material coating 129, and the organic material coating 129 is positioned between the anode 128 and the cathode 120.
Preferably, an insulating layer 25 may be further disposed between the first conductive layer 21 and the second conductive layer 23 for electrically isolating the two conductive layers, and when the insulating layer is added, the supporting point 22 is disposed on a top surface of the insulating layer 25, and a bottom surface of the insulating layer 25 is attached to the second conductive layer 23.
The OLED display panel has a plurality of pixels 122 formed thereon. Preferably, the supporting points 22 are located in the gaps 123 formed between the pixels 122, i.e. in dark areas on the OLED display panel, so that the display effect of the OLED display panel is not affected while the OLED display panel emits sound directionally. The shape of the supporting points 22 and the specific distribution positions in the pixel gaps 123 are not limited in the present invention, as long as the supporting points 22 are located in the gaps 123 between the pixels 122, for example, the above description may be referred to, and details are not repeated herein.
The utility model adopts the polaroid and the glass substrate of the existing display panel as the two conducting strips of the directional sounding device respectively, realizes the integration of the screen directional sounding structure and the display panel, and further realizes the thinner thickness of the sounding screen. In addition, the display device can realize directional sound production, thereby realizing audio frequency orientation, listening privacy and avoiding interference to surrounding personnel.
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 utility model 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 utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a directional display device of sound production, its characterized in that, includes display panel and sound production subassembly, display panel includes first polaroid and display panel body, the display panel body is including being located outermost first glass substrate, the sound production subassembly set up in between first polaroid and the first glass substrate, the sound production subassembly includes first conducting layer, a plurality of strong point and second conducting layer, first conducting layer set up in the bottom surface of first polaroid, the second conducting layer set up in the top surface of first glass substrate, the strong point set up in between first conducting layer and the second conducting layer, first polaroid is in response to exerting of the signal of telecommunication and vibrates in order to launch the air with the ultrasonic wave of modulation.
2. The directional sounding display device of claim 1, wherein the display panel is an LCD or LED display panel, the display panel body further comprises a liquid crystal layer, a second glass substrate, a second polarizer and a backlight module, the liquid crystal layer is located between the first glass substrate and the second glass substrate, and the second polarizer is located between the second glass substrate and the backlight module.
3. A directional sound display device according to claim 1, wherein the display panel is an OLED display panel, the display panel body further comprising an anode, a cathode, and an organic material coating between the anode and the cathode, the anode being between the first glass substrate and the organic material coating.
4. A directional sound display device according to claim 3, wherein when the display panel is an OLED display panel, the first polarizer is a circular polarizer.
5. A directional sound production display device according to any one of claims 1 to 4, wherein the display panel body is formed with a plurality of pixels arranged in a rectangular array, and the supporting points are located in gaps formed between the pixels.
6. A sound-directional display device according to claim 5, wherein said supporting points are in the shape of a cross or approximately a cross, said cross supporting points being located in the gaps formed between four pixels in a quadrilateral.
7. A directional display device according to claim 5, wherein said support points are in the form of or near elongated bars, said elongated bars being located between two adjacent rows of pixels or two adjacent columns of pixels.
8. The display device of claim 1, wherein the sound generating assembly further comprises an insulating layer, the insulating layer is disposed between the first conductive layer and the second conductive layer, and the supporting point is disposed on the insulating layer.
9. A directional sound display device according to claim 1, wherein the display device comprises a driver circuit having two inputs and two outputs, the inputs being arranged to receive an audio modulated ultrasonic carrier signal, one of the outputs being coupled to the first conductive layer and the other of the outputs being coupled to the second conductive layer.
10. A directional sound display device according to claim 1, wherein the bias voltage applied between the first conductive layer and the second conductive layer is in the range of 200V to 500V.
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| CN202121649653.4U CN215420759U (en) | 2021-07-20 | 2021-07-20 | Display device capable of directionally sounding |
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| CN202121649653.4U CN215420759U (en) | 2021-07-20 | 2021-07-20 | Display device capable of directionally sounding |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114550611A (en) * | 2022-02-24 | 2022-05-27 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, sound production control method and display device |
| CN114937428A (en) * | 2022-04-28 | 2022-08-23 | 苏州清听声学科技有限公司 | Vibration layer tensioning process of directional sound production display screen |
| CN115036348A (en) * | 2022-04-28 | 2022-09-09 | 苏州清听声学科技有限公司 | Directional display device and electronic device |
| CN115243171A (en) * | 2022-08-03 | 2022-10-25 | 苏州清听声学科技有限公司 | Efficient dual-track directional sounding ultrasonic screen and manufacturing process thereof |
| CN115243168A (en) * | 2022-05-25 | 2022-10-25 | 苏州清听声学科技有限公司 | Preparation process of touch sounding display unit |
| CN115942219A (en) * | 2022-10-17 | 2023-04-07 | 苏州清听声学科技有限公司 | Foldable directional sounding device, display device and preparation process |
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2021
- 2021-07-20 CN CN202121649653.4U patent/CN215420759U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114550611A (en) * | 2022-02-24 | 2022-05-27 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof, sound production control method and display device |
| CN114550611B (en) * | 2022-02-24 | 2023-12-01 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof, sounding control method and display device |
| CN114937428A (en) * | 2022-04-28 | 2022-08-23 | 苏州清听声学科技有限公司 | Vibration layer tensioning process of directional sound production display screen |
| CN115036348A (en) * | 2022-04-28 | 2022-09-09 | 苏州清听声学科技有限公司 | Directional display device and electronic device |
| CN115036348B (en) * | 2022-04-28 | 2023-12-29 | 苏州清听声学科技有限公司 | Directional display device and electronic device |
| CN115243168A (en) * | 2022-05-25 | 2022-10-25 | 苏州清听声学科技有限公司 | Preparation process of touch sounding display unit |
| WO2023226764A1 (en) * | 2022-05-25 | 2023-11-30 | 苏州清听声学科技有限公司 | Touch control sound production display unit and apparatus |
| CN115243171A (en) * | 2022-08-03 | 2022-10-25 | 苏州清听声学科技有限公司 | Efficient dual-track directional sounding ultrasonic screen and manufacturing process thereof |
| CN115243171B (en) * | 2022-08-03 | 2023-11-21 | 苏州清听声学科技有限公司 | Efficient double-channel directional sounding ultrasonic screen and manufacturing process thereof |
| CN115942219A (en) * | 2022-10-17 | 2023-04-07 | 苏州清听声学科技有限公司 | Foldable directional sounding device, display device and preparation process |
| CN115942219B (en) * | 2022-10-17 | 2023-12-08 | 苏州清听声学科技有限公司 | Foldable directional sounding device, display device and preparation process |
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