CN218886804U - Display device - Google Patents

Abstract

The utility model provides a display device, which comprises a display panel and a directional sounding structure, wherein the directional sounding structure is formed on a display side surface film layer or a back side surface film layer of the display panel; and the display side surface film layer or the back side surface film layer of the display panel is reused as one of the substrates of the directional sound production structure; the directional sounding structure is used for converting an electric signal containing an audio signal into an ultrasonic signal to be sounded. The display device is formed by forming a directional sound production structure on a display side surface film layer or a back side surface film layer of a display panel; and the display side surface film layer or the back side surface film layer of the display panel is used as one of the substrates of the directional sounding structure, namely the directional sounding structure is directly integrated on the display panel, so that the directional sounding display device which is light, thin, ultra-narrow in frame and good in integrity can be realized, and the actual requirements of vast consumers are met.

Description

Display device

Technical Field

The utility model belongs to the technical field of show, concretely relates to display device.

Background

With the development of society and the continuous improvement of the living standard of people, the display technology gradually enters thousands of households, and consumer electronics such as mobile phones, flat panels, notebook computers, electronic readers and the like also increasingly go deep into the work, study and life of people, so that the problems of information leakage and interference are troubled all the time in public places.

Some manufacturers at present adopt outer hanging directional sound generating mechanism, have realized the directional transmission of audio frequency, but because outer hanging directional sound generating mechanism all shows very poor in the indexes such as the wholeness of outward appearance, weight, thickness, frame, do not conform to consumers's in general user demand, still need further improvement optimization.

SUMMERY OF THE UTILITY MODEL

In order to solve the very poor technical problem that the external hanging directional sound generating device shows in the indexes of appearance, weight, thickness, frame, and the like, the utility model provides a display device, which comprises a display panel and a directional sound generating structure, wherein the directional sound generating structure is formed on the display side surface film layer or the back side surface film layer of the display panel; and the display side surface film layer or the back side surface film layer of the display panel is reused as one of the substrates of the directional sound production structure;

the directional sounding structure is used for converting an electric signal containing an audio signal into an ultrasonic signal to be sent out.

Optionally, the directional sounding structure comprises a vibration substrate and a butt-joint substrate, wherein the vibration substrate and the butt-joint substrate are butt-jointed and the peripheral edges of the vibration substrate and the butt-joint substrate are hermetically connected through frame sealing glue;

the vibration substrate comprises a first substrate, a first electrode layer, a first conducting layer and a first insulating layer, wherein the first electrode layer, the first conducting layer and the first insulating layer are sequentially stacked on the first substrate;

the first conducting layer is positioned in the peripheral edge area of the first electrode layer, and the first conducting layer is in contact with and electrically connected with the first electrode layer;

the involutory substrate comprises a second substrate, and a second electrode layer, a second conducting layer, a second insulating layer and a spacer layer which are sequentially overlapped on the second substrate;

the second conducting layer is located in the peripheral edge area of the second electrode layer, and the second conducting layer is in contact with and electrically connected with the second electrode layer;

the shock insulator layer comprises a plurality of supporting shock insulators which are evenly distributed in an array at equal intervals.

Optionally, the display panel includes a display area and a frame area, and the frame area is surrounded on the periphery of the display area;

orthographic projections of the first electrode layer and the second electrode layer on the display panel extend from the display area to at least partial area of the frame area;

the orthographic projection of the spacer layer on the display panel is positioned in the display area;

orthographic projections of the first conducting layer and the second conducting layer on the display panel are located in the frame area.

Optionally, the display panel includes a flexible substrate, a flexible display layer, and an encapsulation layer, where the flexible display layer and the encapsulation layer are sequentially stacked on the flexible substrate;

the vibration substrate is formed on one side of the flexible substrate, which is far away from the flexible display layer, and the flexible substrate is reused as the first substrate;

the involution substrate is positioned on one side of the vibration substrate, which is far away from the display panel.

Optionally, the display panel includes a flexible substrate, a flexible display layer, and an encapsulation layer, and the flexible display layer and the encapsulation layer are sequentially stacked on the flexible substrate;

the involutory substrate is formed on one side of the packaging layer, which is far away from the flexible display layer, and the packaging layer is used as the second substrate;

the vibration substrate is positioned on one side of the involutory substrate, which is far away from the display panel.

Optionally, the display panel includes a collimating backlight plate, a privacy film, a display liquid crystal cell and a dimming liquid crystal cell, and the privacy film, the display liquid crystal cell and the dimming liquid crystal cell are sequentially stacked on a light emitting side of the collimating backlight plate;

the dimming liquid crystal box comprises an upper substrate and a lower substrate, the lower substrate is attached to the display liquid crystal box, and the upper substrate is positioned on one side of the lower substrate, which is far away from the display liquid crystal box;

the involution substrate is positioned on one side of the upper substrate, which is far away from the lower substrate, and the upper substrate is reused as the second substrate;

the vibration substrate is positioned on one side of the involutory substrate, which is far away from the upper base.

Optionally, the first electrode layer and the second electrode layer are made of an indium tin oxide/silver/indium tin oxide stack material, an indium tin oxide material, or a nano-silver material.

Optionally, the resistance of the first electrode layer is less than or equal to 20 Ω;

the resistance of the second electrode layer is less than or equal to 20 Ω.

Optionally, the first conductive layer and the second conductive layer are made of copper or silver.

Optionally, the thickness of the first conductive layer ranges from 1 to 10 μm;

the thickness range of the second conductive layer is 1-10 mu m.

Optionally, the first insulating layer has a thickness in a range of 15 to 25 μm;

the thickness of the second insulating layer ranges from 15 to 25 μm.

Optionally, the shape of the supporting spacer comprises a frustum shape or a column shape.

Optionally, the height of the supporting spacer is in the range of 5-15 μm;

the radial size range of the bottom surface of the supporting spacer, which is in contact with the second insulating layer, is 15-20 microns;

the radial dimension range of the top surface of the supporting and isolating object is 5-12 mu m.

Optionally, the first substrate is made of PET, CPI, UTG, COP or YPI material;

the thickness of the first substrate is less than or equal to 50 μm, and the hardness of the first substrate is greater than or equal to 3H.

Optionally, the second substrate is made of PET, CPI, COP or YPI material; the thickness range of the second substrate is 20-100 mu m;

or the second substrate is made of UTG; the thickness of the second substrate ranges from 0.05T to 0.1T.

The utility model has the advantages that: the display device provided by the utility model forms the directional sounding structure on the display side surface film layer or the back side surface film layer of the display panel; and the display side surface film layer or the back side surface film layer of the display panel is used as one substrate of the directional sounding structure, namely the directional sounding structure is directly integrated on the display panel, so that the directional sounding display device which is light, thin, ultra-narrow in frame and good in integrity can be realized, and the practical requirements of vast consumers are met.

Drawings

Fig. 1 is a schematic cross-sectional view of a display device according to the present invention;

fig. 1a is a schematic top view of a structure of the involutive base plate according to the present invention;

fig. 2 is a schematic cross-sectional view of another display device according to the present invention;

fig. 3 is a schematic cross-sectional view of another display device according to the present invention;

FIG. 4a is a schematic view of a process for preparing the vibration substrate of FIG. 1;

FIG. 4b is a schematic diagram of a process for preparing the aligned substrates of FIG. 1;

FIG. 4c is a schematic view illustrating a process of assembling the vibrating substrate and the aligning substrate to form the display device of FIG. 1;

FIG. 5a is a schematic view of a process for preparing the aligned substrates in FIG. 2;

FIG. 5b is a schematic view of a process for preparing the vibrating substrate of FIG. 2;

FIG. 5c is a schematic view illustrating a process of assembling the vibrating substrate and the aligning substrate to form the display device of FIG. 2;

FIG. 6a is a schematic view of a process for preparing the aligned substrates in FIG. 3;

FIG. 6b is a schematic view of a process for preparing the vibration substrate of FIG. 3;

fig. 6c is a schematic view illustrating a process of forming the display device in fig. 3 by combining the vibration substrate and the combining substrate.

Wherein the reference numerals are:

1. a display panel; 101. a display area; 102. a frame region; 11. a flexible substrate; 12. a flexible display layer; 13. a packaging layer; 14. flexibly binding a circuit board; 15. collimating the backlight plate; 16. a privacy film; 17. a display liquid crystal cell; 18. dimming a liquid crystal box; 181. an upper substrate; 182. a lower substrate; 2. a directional sounding structure; 21. vibrating the substrate; 211. a first substrate; 212. a first electrode layer; 213. a first conductive layer; 214. a first insulating layer; 22. aligning the substrates; 221. a second substrate; 222. a second electrode layer; 223. a second conductive layer; 224. a second insulating layer; 225. supporting a spacer; 23. sealing the frame glue; 231. a first rubber frame; 232. a second rubber frame; 24. a peripheral binding circuit board; 25. a conductive pattern.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a display device according to the present invention with reference to the accompanying drawings and the detailed description.

In order to solve the problem that the external hanging directional sound-generating device in the prior art is very poor in appearance integrity, weight, thickness, frame and other indexes, an embodiment of the present invention provides a display device, as shown in fig. 1-3, comprising a display panel 1 and a directional sound-generating structure 2 formed on a display side surface film layer or a back side surface film layer of the display panel 1; the display side surface film layer or the back side surface film layer of the display panel 1 is reused as one of the substrates of the directional sound production structure 2; the directional sounding structure 2 is used for converting an electric signal containing an audio signal into an ultrasonic signal to be sounded.

The directional sounding structure 2 modulates the audio signal and the ultrasonic carrier signal, emits the ultrasonic wave to the air through the audio directional transducer, demodulates the audio signal after propagating a certain distance by utilizing ultra-strong directional propagation and nonlinear acoustic effect of the ultrasonic wave in the air, and forms an audible sound signal with strong directivity, thereby achieving the effect of directional propagation of the audio signal. By integrating the directional sounding structure 2 on the display panel 1, a new sound peep-proof function of the display device can be realized, thereby further improving the market competitiveness of the display device.

In the present embodiment, the directional sound emission structure 2 is formed on the display-side surface film layer or the back-side surface film layer of the display panel 1; and the display side surface film layer or the back side surface film layer of the display panel 1 is used as one of the substrates of the directional sounding structure 2, that is, the directional sounding structure 2 is directly integrated on the display panel 1, so that the directional sounding display device which is light, thin, ultra-narrow in frame and good in integrity can be realized, and the actual requirements of consumers can be met better.

Alternatively, as shown in fig. 1 to fig. 3, the directional sound generating structure 2 includes a vibration substrate 21 and a matching substrate 22, the vibration substrate 21 and the matching substrate 22 are matched and the peripheral edges are hermetically connected by a frame sealing adhesive 23; the vibration substrate 21 includes a first base 211, and a first electrode layer 212, a first conductive layer 213, and a first insulating layer 214 sequentially stacked on the first base 211; the first conductive layer 213 is located at the peripheral edge region of the first electrode layer 212, and the first conductive layer 213 is in contact with and electrically connected to the first electrode layer 212; the alignment substrate 22 includes a second substrate 221, and a second electrode layer 222, a second conductive layer 223, a second insulating layer 224, and a spacer layer sequentially stacked on the second substrate 221; the second conductive layer 223 is located at the peripheral edge region of the second electrode layer 222, and the second conductive layer 223 is in contact with and electrically connected to the second electrode layer 222; the spacer layer comprises a plurality of supporting spacers 225, and the supporting spacers 225 are uniformly distributed at equal intervals in an array.

Alternatively, the first electrode layer 212 and the second electrode layer 222 are made of a stack material of ito/ag/ito, ito material, or nano-ag material.

Optionally, the resistance of the first electrode layer 212 is less than or equal to 20 Ω; the resistance of the second electrode layer 222 is less than or equal to 20 Ω.

Alternatively, the first conductive layer 213 and the second conductive layer 223 use a copper or silver material.

In this embodiment, the first conductive layer 213 is located at the peripheral edge region of the first electrode layer 212, and the first conductive layer 213 is in contact with and electrically connected to the first electrode layer 212; the conductive performance of the first conductive layer 213 is better than that of the first electrode layer 212, and the arrangement of the first conductive layer 213 can reduce the resistance of the first electrode layer 212, increase the transmission speed of the electrical signal on the first electrode layer 212, and simultaneously improve the conductive uniformity of the first electrode layer 212. Similarly, the second conductive layer 223 is located at the peripheral edge region of the second electrode layer 222, and the second conductive layer 223 is in contact with and electrically connected to the second electrode layer 222; the conductive performance of the second conductive layer 223 is better than that of the second electrode layer 222, and the second conductive layer 223 can reduce the resistance of the second electrode layer 222, improve the transmission speed of an electric signal on the second electrode layer 222, and improve the conductive uniformity of the second electrode layer 222.

Optionally, the display panel 1 includes a display area 101 and a frame area 102, and the frame area 102 is arranged around the display area 101; the orthographic projection of the first electrode layer 212 and the second electrode layer 222 on the display panel 1 extends from the display area 101 to at least a partial area of the frame area 102; the orthographic projection of the spacer layer on the display panel 1 is positioned in the display area 101; the orthographic projections of the first conductive layer 213 and the second conductive layer 223 on the display panel 1 are located in the bezel area 102. With this arrangement, the first conductive layer 213 and the second conductive layer 223 (both of which are light-shielding metals) do not shield the display region 101 of the display panel 1, thereby ensuring that the display panel 1 can normally display a picture.

Optionally, the thickness of the first conductive layer 213 ranges from 1 to 10 μm; the thickness of the second conductive layer 223 ranges from 1 to 10 μm. The thickness is set to ensure that the step difference between the first conductive layer 213 and the first electrode layer 212 is small, and the step difference between the second conductive layer 223 and the second electrode layer 222 is small, so that the facing step difference between the corresponding frame region 102 and the display region 101 of the vibrating substrate 21 and the facing substrate 22 is small, and the defect caused by the large step difference is avoided.

Optionally, the thickness of the first insulating layer 214 ranges from 15 to 25 μm; the thickness of the second insulating layer 224 ranges from 15 to 25 μm. The thickness of the first insulating layer 214 and the second insulating layer 224 can ensure a breakdown voltage of 400V or more.

Optionally, the shape of the support spacer 225 includes a frustum or column shape.

Optionally, the height of the supporting spacer 225 ranges from 5 to 15 μm; the radial dimension of the bottom surface of the support spacer 225 in contact with the second insulating layer 224 ranges from 15 to 20 μm; the top surface of the support spacer 225 has a radial dimension in the range of 5 to 12 μm.

The specific working principle of the directional sounding structure 2 is as follows: inputting an audio signal into a driving board, processing the audio signal by the driving board, modulating the audio signal to a frequency band near 80KHz, amplifying the audio signal and transmitting the audio signal to the directional sounding structure 2; when the amplified mixed signal is loaded on the first electrode layer 212 and the second electrode layer 222 of the directional sounding structure 2, an electric field between the first electrode layer 212 and the second electrode layer 222 generates coulomb force, and the coulomb force drives the vibrating membrane (i.e., the vibrating substrate 21 or the involutory substrate 22) to vibrate at the frequency of the mixed signal to generate corresponding ultrasonic waves; ultrasonic waves have super-strong directivity after being emitted out of a display device and propagate in an approximately linear mode in the air, the ultrasonic waves continuously demodulate audible audio signals through nonlinear interaction during propagation along a propagation axis of the ultrasonic waves, the continuously demodulated sound waves are superposed and accumulated to finally form an emitting end type virtual sound array, and the virtual sound array of the sound source is called a parametric sound array. The parametric acoustic matrix allows to continuously increase the acoustic energy in the direction of the acoustic wave, and due to the strong directivity of the ultrasonic wave, the superposition effect propagating outward in the direction of the main axis will be very weak, eventually resulting in the superposition of the main propagation direction converging the acoustic wave propagating with high directivity.

Alternatively, as shown in fig. 1, the display panel 1 includes a flexible substrate 11, a flexible display layer 12, and an encapsulation layer 13, where the flexible display layer 12 and the encapsulation layer 13 are sequentially stacked on the flexible substrate 11; the vibration substrate 21 is formed on the side of the flexible substrate 11 away from the flexible display layer 12, and the flexible substrate 11 is reused as the first substrate 211; the alignment substrate 22 is located on a side of the vibration substrate 21 away from the display panel 1.

The flexible substrate 11 may be made of PET, CPI, or COP. The flexible display layer 12 includes a pixel driving circuit and an OLED (Organic Light-Emitting Diode) Light Emitting device. The encapsulation layer 13 has a stacked structure of an organic encapsulation layer and an inorganic encapsulation layer. In the embodiment, the display panel 1 is a flexible OLED panel, the flexible OLED panel is light and thin and can be flexibly bent, and the flexible OLED panel is used as a vibrating membrane of the directional sound production structure 2, so that the directional sound production structure 2 is integrated in the display device, and the integration effect is perfectly realized; the directional emission of sound is realized on the flexible OLED panel, so that a perfect sound peep-proof display device is realized. In the display device in the embodiment, the flexible OLED panel is used as the vibrating membrane of the directional sounding structure 2, so that the problems of thick overall thickness, heavy weight, large frame and the like of the existing externally-hung directional sounding display device can be effectively solved, and the display device with real flexibility, light weight and ultra-narrow frame is realized; meanwhile, the flexible OLED panel can produce sound directionally by any curvature surface, so that the directional angle is further improved; the transparent display characteristic of the transparent display OLED panel can be utilized to realize the transparent display directional sounding, and the LED display device is applied to the advertisement field such as curtain walls.

Alternatively, as shown in fig. 1, the second substrate 221 is made of PET, CPI, COP or YPI material; the thickness of the second substrate 221 ranges from 20 μm to 100 μm; PET, CPI, COP or YPI are flexible, bendable, foldable materials; alternatively, the second substrate 221 is made of UTG; the thickness of the second substrate 221 ranges from 0.05T to 0.1T. UTG material such as tempered UTG glass.

Alternatively, as shown in fig. 1 to fig. 3, the frame sealing adhesive 23 includes a first adhesive frame 231 located at the inner circle of the peripheral edges of the aligned vibrating substrate 21 and the aligned substrate 22, and a second adhesive frame 232 (i.e., a sealing adhesive frame) located at the outer circle of the peripheral edges of the aligned vibrating substrate 21 and the aligned substrate 22. The first glue frame 231 at least partially overlaps with the orthographic projections of the first conductive layer 213 and the second conductive layer 223 on the display panel 1. The directional sounding structure 2 further comprises a peripheral binding circuit board 24, and the peripheral binding circuit board 24 is connected with the main control circuit and used for providing an electrical signal containing an audio signal for the directional sounding structure 2; the peripheral binding circuit board 24 is bound and connected to the vibration substrate 21 or the mating substrate 22, and the peripheral binding circuit board 24 is connected to the first conductive layer 213 and the second conductive layer 223 respectively, so as to be connected to the first electrode layer 212 and the second electrode layer 222 respectively.

Alternatively, as shown in fig. 1 and fig. 1a, the peripheral bonding wiring board 24 is bonded and connected to the opposing substrate 22, and the peripheral bonding wiring board 24 is bonded and connected to the second electrode layer 222 by connecting the second conductive layer 223. The directional sound production structure 2 further comprises a conductive pattern 25, the conductive pattern 25 and the second conductive layer 223 are disposed on the same layer, and orthographic projections of the conductive pattern 25 and the second conductive layer 223 on the second substrate 221 do not overlap (i.e. they are insulated from each other); the first electrode layer 212 on the vibrating substrate 21 is connected to the conductive pattern 25 through the first conductive layer 213 and the first glue frame 231 with conductive particles added in a local area, thereby realizing the binding connection between the first electrode layer 212 and the peripheral binding wiring board 24.

Optionally, orthographic projections of the binding connection positions of the second insulating layer 224 and the peripheral binding wiring board 24 and the second conductive layer 223 and the binding connection positions of the second insulating layer 224 and the peripheral binding wiring board 24 and the conductive pattern 25 on the second substrate 221 are at least partially not overlapped, so that the binding connection of the peripheral binding wiring board 24 and the second conductive layer 223 and the binding connection of the peripheral binding wiring board 24 and the conductive pattern 25 are realized.

Optionally, as shown in fig. 1 to fig. 3, the display panel 1 includes a flexible binding circuit board 14, the flexible binding circuit board 14 is connected to the main control chip, and the flexible binding circuit board 14 is connected to the pixel driving circuit in the flexible display layer 12 in a binding manner, so as to provide driving signals (such as a data driving signal and a gate driving signal) and power signals for the display of the flexible display layer 12.

Alternatively, as shown in fig. 2, the display panel 1 includes a flexible substrate 11, a flexible display layer 12, and an encapsulation layer 13, where the flexible display layer 12 and the encapsulation layer 13 are sequentially stacked on the flexible substrate 11; the opposite substrate 22 is formed on the side of the packaging layer 13 away from the flexible display layer 12, and the packaging layer 13 is used as the second base 221; the vibration substrate 21 is located on a side of the facing substrate 22 away from the display panel 1.

As in fig. 2, the vibrating substrate 21 serves as a diaphragm of the directional sounding structure 2, thereby realizing a perfect sound peep-proof display device.

Optionally, in fig. 2, the flexible bonding circuit board 14 is bent along with the flexible substrate 11 to the back side thereof facing away from the flexible display layer 12 and fixed, so as to reduce the bezel width of the display device.

Optionally, as shown in fig. 3, the display panel 1 includes a collimated backlight plate 15, a privacy film 16, a display liquid crystal cell 17 and a dimming liquid crystal cell 18, and the privacy film 16, the display liquid crystal cell 17 and the dimming liquid crystal cell 18 are sequentially stacked on the light-emitting side of the collimated backlight plate 15; the dimming liquid crystal box 18 comprises an upper substrate 181 and a lower substrate 182, wherein the lower substrate 182 is attached to the display liquid crystal box 17, and the upper substrate 181 is positioned on one side of the lower substrate 182, which is far away from the display liquid crystal box 17; the alignment substrate 22 is located on a side of the upper base 181 away from the lower base 182, and the upper base 181 is reused as the second base 221; the vibration substrate 21 is located on a side of the opposing substrate 22 away from the upper base 181.

Wherein the vibration substrate 21 serves as a vibration film of the directional sounding structure 2, as shown in fig. 3, thereby realizing a perfect sound peep-proof display device. The structure of the display liquid crystal cell 17 is the same as that of the liquid crystal cell in the liquid crystal display panel, and the description thereof is omitted. The light control liquid crystal cell 18 is not provided with upper and lower polarizers on the basis of the structure of the display liquid crystal cell 17, and the other structures are the same as the display liquid crystal cell 17. The collimating backlight 15 emits collimated light; the privacy film 16 further collimates the collimated light transmitted therethrough; thereby providing collimated backlight for the display liquid crystal cell 17; the display liquid crystal box 17 realizes collimation display under collimation backlight; the dimming liquid crystal cell 18 can adjust the picture displayed by the display liquid crystal cell 17 to a certain viewing angle range, thereby realizing the peep-proof display of the display device. That is, the display device in this embodiment can realize display and sound double peep-proof, thereby further improving the market competitiveness of the display device. The double peep-proof display device in the embodiment can effectively solve the problems of reliability bubbles and the like existing in the prior externally-hung directional sounding liquid crystal display device by using a polarizer as a vibrating membrane; in the dual-privacy-protection display device in this embodiment, the directional sounding structure 2 is disposed on the upper substrate 181 of the dimming liquid crystal cell 18, so that the problem of light reflection of the metal electrode on the upper substrate 181 side of the dimming liquid crystal cell 18 of the existing privacy-protection display device (no polarizer is disposed on the dimming liquid crystal cell 18, and the metal wire or the metal electrode on the upper substrate 181 has serious light reflection) can be effectively solved, and a function of protecting the side surface of the upper substrate 181 of the dimming liquid crystal cell 18 is also achieved.

In addition, when the display device is not peeped, the display light can be scattered through the dimming liquid crystal box 18 so as to adjust the picture displayed by the display liquid crystal box 17 to be displayed in a larger visual angle range, thereby realizing the peep-free display.

Alternatively, as shown in fig. 2 and 3, the first substrate 211 is made of PET, CPI, UTG, COP or YPI; the PET, CPI, COP and YPI are made of flexible bendable materials; the thickness of the first substrate 211 is less than or equal to 50 μm, and the hardness of the first substrate 211 is greater than or equal to 3H. The material, thickness, and hardness of the first base 211 are set to facilitate sound generation by vibration when the vibration substrate 21 is used as a diaphragm.

Optionally, in this embodiment, the preparation process of the display device shown in fig. 1 is as follows: as shown in fig. 4a, 4b and 4c, step S101: the vibration substrate 21 is prepared on the flexible substrate 11 of the display panel 1.

The method comprises the following steps: preparing a display panel 1;

preparing a first electrode layer 212 on the flexible substrate 11 of the display panel 1 by using a patterning process;

preparing a first conductive layer 213 on the flexible substrate 11 on which the above steps are completed using a patterning process;

the first insulating layer 214 is prepared on the flexible substrate 11 on which the above-described steps are completed using a slit coating, exposure, developing process, or screen printing process.

The display panel 1 is manufactured by a conventional manufacturing method, which is not described herein again. The composition process comprises the steps of film layer deposition, exposure, development, etching and the like.

Step S102: an aligned substrate 22 is prepared.

The method specifically comprises the following steps: preparing a second electrode layer 222 on a second substrate 221;

preparing a second conductive layer 223 on the second substrate 221 after the above steps by using a patterning process;

preparing a second insulating layer 224 on the second substrate 221 after the above steps by using a slit coating, exposing, developing process or a screen printing process;

preparing a spacer layer on the second substrate 221 after the above steps by using a slit coating, exposing, developing process or a screen printing process;

and binding and connecting the peripheral binding circuit board 24 on the second substrate 221 after the steps are completed.

Step S103: the vibration substrate 21 and the alignment substrate 22 are aligned.

The method specifically comprises the following steps: bonding the aligned vibration substrate 21 and the aligned substrate 22 to each other by the first glue frame 231; meanwhile, the first conductive layer 213 is locally bound and connected with the peripheral binding circuit board 24 through the first rubber frame 231;

bonding the bonded vibration substrate 21 and bonded substrate 22 through a second glue frame 232;

and bending the display device into a curved surface with a certain curvature according to requirements.

In the process of adhering the first adhesive frame 231 and the second adhesive frame 232, the vibrating substrate 21 and the aligning substrate 22 are tensioned by a tensioning jig, so that the film material is tensioned and flat.

Optionally, in this embodiment, the preparation process of the display device shown in fig. 2 is as follows: as shown in fig. 5a, 5b and 5c, step S201: an opposing substrate 22 is prepared on the encapsulation layer 13 of the display panel 1.

The method comprises the following steps: preparing a display panel 1;

preparing a second electrode layer 222 on the encapsulation layer 13 of the display panel 1 by using a patterning process;

preparing a second conductive layer 223 on the encapsulation layer 13 after the above steps by using a patterning process;

preparing a second insulating layer 224 on the encapsulation layer 13 after the above steps by using a slit coating, exposure, development process or screen printing process;

preparing a spacer layer on the packaging layer 13 after the steps by adopting a slit coating, exposure and developing process or a screen printing process; and the peripheral binding circuit board 24 is bound and connected on the packaging layer 13 which completes the steps.

The composition process comprises the steps of film deposition, exposure, development, etching and the like.

Step S202: the vibration substrate 21 is prepared.

The method specifically comprises the following steps: preparing a first electrode layer 212 on a first substrate 211;

preparing a first conductive layer 213 on the first substrate 211 after the above steps using a patterning process;

the first insulating layer 214 is prepared on the first substrate 211 where the above steps are completed, using a slit coating, exposing, developing process, or screen printing process.

Step S203: the vibration substrate 21 and the alignment substrate 22 are aligned.

The specific operation process of this step is the same as the specific operation process of step S103, except that, in this step, a side frame on which the flexible binding circuit board 14 (bound and connected with the flexible display layer 12) is disposed on the flexible substrate 11 of the display panel 1 is bent to the back side of the flexible substrate 11.

Optionally, in this embodiment, the preparation process of the display device shown in fig. 3 is as follows: as shown in fig. 6a, 6b and 6c, step S301: an alignment substrate 22 is prepared on the upper substrate 181 of the dimming liquid crystal cell 18 of the display panel 1.

The method comprises the following steps: preparing a display panel 1;

preparing a second electrode layer 222 on the upper substrate 181 of the dimming liquid crystal cell 18 by using a patterning process;

preparing a second conductive layer 223 on the upper substrate 181 of the dimming liquid crystal cell 18 after the above steps by using a patterning process;

preparing a second insulating layer 224 on the upper substrate 181 of the dimming liquid crystal box 18 by using slit coating, exposure, development process or screen printing process;

preparing a spacer layer on the upper substrate 181 of the dimming liquid crystal box 18 by adopting slit coating, exposure and development processes or screen printing processes; and the peripheral binding circuit board 24 is bound and connected on the upper substrate 181 of the dimming liquid crystal box 18 which is completed with the steps.

The composition process comprises the steps of film deposition, exposure, development, etching and the like.

Step S302: the vibration substrate 21 is prepared.

The method specifically comprises the following steps: preparing a first electrode layer 212 on a first substrate 211;

preparing a first conductive layer 213 on the first substrate 211 after the above steps using a patterning process;

a first insulating layer 214 is prepared on the first substrate 211 on which the above-described steps are completed using a slit coating, exposure, development process, or screen printing process.

Step S303: the vibration substrate 21 and the alignment substrate 22 are aligned.

The specific operation procedure of this step is the same as that of step S103, and is not described here again.

The display device provided by the utility model forms the directional sounding structure on the display side surface film layer or the back side surface film layer of the display panel; the display side surface film layer or the back side surface film layer of the display panel is used as one substrate of the directional sounding structure, namely, the directional sounding structure is directly integrated on the display panel, so that the directional sounding display device which is light, thin, ultra-narrow in frame and good in integrity can be realized, and the actual requirements of consumers are met; meanwhile, a directional sounding structure is integrated on the display panel, so that a new sound peep-proof function of the display device can be realized, and the market competitiveness of the display device is further improved.

The utility model provides a display device can be any product or part that have the display function such as OLED panel, OLED TV, LCD panel, LCD TV, OLED bill-board, display, cell-phone, navigator.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (15)

1. A display device comprises a display panel and is characterized by further comprising a directional sound production structure formed on a display side surface film layer or a back side surface film layer of the display panel; and the display side surface film layer or the back side surface film layer of the display panel is reused as one of the substrates of the directional sound production structure;

the directional sounding structure is used for converting an electric signal containing an audio signal into an ultrasonic signal to be sent out.

2. The display device according to claim 1, wherein the directional sound emission structure comprises a vibration substrate and a pair substrate, the vibration substrate and the pair substrate are arranged in a pair, and the peripheral edges of the vibration substrate and the pair substrate are hermetically connected through a frame sealing adhesive;

the vibration substrate comprises a first substrate, and a first electrode layer, a first conducting layer and a first insulating layer which are sequentially stacked on the first substrate;

the first conducting layer is positioned in the peripheral edge area of the first electrode layer, and the first conducting layer is in contact with and electrically connected with the first electrode layer;

the involutory substrate comprises a second substrate, and a second electrode layer, a second conducting layer, a second insulating layer and a spacer layer which are sequentially overlapped on the second substrate;

the second conducting layer is located in the peripheral edge area of the second electrode layer, and the second conducting layer is in contact with and electrically connected with the second electrode layer;

the shock insulator layer comprises a plurality of supporting shock insulators which are evenly distributed in an array at equal intervals.

3. The display device according to claim 2, wherein the display panel comprises a display area and a bezel area, and the bezel area is arranged around the display area;

orthographic projections of the first electrode layer and the second electrode layer on the display panel extend from the display area to at least partial area of the frame area;

the orthographic projection of the spacer layer on the display panel is positioned in the display area;

orthographic projections of the first conducting layer and the second conducting layer on the display panel are located in the frame area.

4. The display device according to claim 3, wherein the display panel comprises a flexible substrate, a flexible display layer, and an encapsulation layer, the flexible display layer and the encapsulation layer being sequentially stacked on the flexible substrate;

the vibration substrate is formed on one side of the flexible substrate, which is far away from the flexible display layer, and the flexible substrate is reused as the first substrate;

the involution substrate is positioned on one side of the vibration substrate, which is far away from the display panel.

5. The display device according to claim 3, wherein the display panel comprises a flexible substrate, a flexible display layer, and an encapsulation layer, the flexible display layer and the encapsulation layer being sequentially stacked on the flexible substrate;

the involutory substrate is formed on one side of the packaging layer, which is far away from the flexible display layer, and the packaging layer is used as the second substrate;

the vibration substrate is positioned on one side of the involution substrate, which is far away from the display panel.

6. The display device according to claim 3, wherein the display panel comprises a collimated backlight plate, a privacy film, a display liquid crystal cell and a dimming liquid crystal cell, and the privacy film, the display liquid crystal cell and the dimming liquid crystal cell are sequentially stacked on a light-emitting side of the collimated backlight plate;

the dimming liquid crystal box comprises an upper substrate and a lower substrate, the lower substrate is attached to the display liquid crystal box, and the upper substrate is positioned on one side of the lower substrate, which is far away from the display liquid crystal box;

the involution substrate is positioned on one side of the upper substrate, which is far away from the lower substrate, and the upper substrate is reused as the second substrate;

the vibration substrate is positioned on one side of the involution substrate, which is far away from the upper base.

7. The display device according to claim 2 or 3, wherein the first electrode layer and the second electrode layer are made of an indium tin oxide/silver/indium tin oxide stack material, an indium tin oxide material, or a nano-silver material.

8. The display device according to claim 7, wherein a resistance of the first electrode layer is less than or equal to 20 Ω;

the resistance of the second electrode layer is less than or equal to 20 Ω.

9. A display device according to claim 2 or 3, wherein the first conductive layer and the second conductive layer are made of a copper or silver material.

10. The display device according to claim 9, wherein a thickness of the first conductive layer is in a range of 1 to 10 μm;

the thickness range of the second conductive layer is 1-10 mu m.

11. A display device according to claim 2 or 3, wherein the first insulating layer has a thickness in the range of 15 to 25 μm;

the thickness of the second insulating layer ranges from 15 to 25 μm.

12. A display device as claimed in claim 2 or 3, characterised in that the shape of the supporting spacer comprises a frustum or column shape.

13. The display device according to claim 12, wherein the height of the supporting spacer is in the range of 5 to 15 μm;

the radial size range of the bottom surface of the supporting spacer, which is in contact with the second insulating layer, is 15-20 microns;

the radial dimension range of the top surface of the supporting and isolating object is 5-12 mu m.

14. The display device according to claim 5 or 6, wherein the first substrate is made of PET, CPI, UTG, COP or YPI;

the thickness of the first substrate is less than or equal to 50 μm, and the hardness of the first substrate is greater than or equal to 3H.

15. The display device according to claim 4, wherein the second substrate is made of PET, CPI, COP or YPI; the thickness range of the second substrate is 20-100 mu m;

or the second substrate is made of UTG; the thickness of the second substrate ranges from 0.05T to 0.1T.

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