CN116782105A

CN116782105A - Display panel, preparation method thereof and display device

Info

Publication number: CN116782105A
Application number: CN202310730328.8A
Authority: CN
Inventors: 张军; 周影; 朱传平; 陈晶; 曲峰; 邰迎喜
Original assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2023-09-19

Abstract

The application discloses a display panel, a preparation method thereof and a display device, wherein the display panel comprises a display area and a non-display area, and the display panel further comprises: an array substrate; a plurality of pixel units arranged on the array substrate, wherein the pixel units are arranged in the display area; the device comprises an array substrate and at least one directional sounding unit arranged on the array substrate, wherein the directional sounding unit is arranged in the non-display area and comprises a first conductive layer, a cavity vibrating layer, a second conductive layer and a vibrating layer which are arranged in a laminated mode, the first conductive layer and the second conductive layer are used for applying sounding signals, the cavity vibrating layer is used for forming a cavity vibrating between the first conductive layer and the second conductive layer, and the vibrating layer is used for vibrating and sounding under the action of the sounding signals.

Description

Display panel, preparation method thereof and display device

Technical Field

The application relates to the technical field of display, in particular to a display panel, a preparation method thereof and a display device.

Background

Conventional display panels have only display functions and must be combined with an audio system to achieve audio transmission. The audio system needs to occupy a certain space when integrated with the display panel. The separate speaker system and display system cannot be integrated with each other completely. Under the trend of narrow frame and comprehensive screen of the display panel at present, each manufacturer innovates structural design to minimize the space occupation of the integrated speaker system and the display system, thereby improving the screen occupation ratio and integrating audio and video.

Screen sounding in the field of mobile phones is one of the innovations. The mobile phone middle frame or the display screen vibrates to make a sound, so that the traditional method that the mobile phone is opened on the screen to realize the loudspeaker is avoided, and the screen occupation ratio is improved. At present, two screen sounding modes exist. One is a cantilever piezoelectric ceramic. The vibration of the piezoelectric ceramic is transmitted to the middle frame through the cantilever metal, and the vibration of the middle frame is used for sounding. The sounding mode is that the middle frame sounds, so that the sound has no good directivity, and the privacy of the audio transmission is poor. The other is to transmit the excited vibration to the screen through metal by using the conventional electromagnetic excitation principle, and to make a sound through the vibration of the screen. The sound emission mode has better improvement on the directivity of sound due to the vibration of a screen, but the privacy and the long-distance directional sound transmission can not meet the requirements of some scenes.

Disclosure of Invention

In view of the above-mentioned drawbacks or shortcomings in the prior art, it is desirable to provide a display panel, a manufacturing method thereof, and a display device, which can realize the requirements of directional transmission of screen sound, anti-peeping and noise pollution, simplified process, and light and thin performance.

In a first aspect, the present application provides a display panel including a display area and a non-display area, the display panel further including:

an array substrate;

a plurality of pixel units arranged on the array substrate, wherein the pixel units are arranged in the display area;

the device comprises an array substrate and at least one directional sounding unit arranged on the array substrate, wherein the directional sounding unit is arranged in the non-display area and comprises a first conductive layer, a cavity vibrating layer, a second conductive layer and a vibrating layer which are arranged in a laminated mode, the first conductive layer and the second conductive layer are used for applying sounding signals, the cavity vibrating layer is used for forming a cavity vibrating between the first conductive layer and the second conductive layer, and the vibrating layer is used for vibrating and sounding under the action of the sounding signals.

Optionally, the directional sounding layer further comprises a first insulating layer arranged on one side of the vibration cavity layer away from the array substrate and a second insulating layer arranged on one side of the vibration cavity layer close to the array substrate, wherein the first insulating layer covers the first conductive layer, and the second insulating layer covers the second conductive layer;

the vibration layer at least comprises the first insulating layer;

the vibration cavity layer comprises a plurality of first support columns which are arranged at intervals.

Optionally, the pixel unit includes a display electrode and a display layer that are stacked, where the display layer includes a plurality of second support columns that are disposed at intervals;

the first conductive layer and the display electrode are arranged on the same layer, and the first conductive layer and the display electrode are prepared and formed through the same process;

the first support column and the second support column are formed through the same process.

Optionally, the array substrate includes a substrate and a thin film transistor layer on the substrate, where the thin film transistor layer includes a first driving unit disposed in the display area and a second driving unit disposed in the non-display area, the first driving unit is in one-to-one correspondence with the pixel units, the first driving unit is used to provide display signals for the pixel units, the second driving unit is in one-to-one correspondence with the directional sounding units, and the second driving unit is used to provide the sounding signals for the directional sounding units;

the first driving unit and the second driving unit are manufactured and formed through the same process.

Optionally, the first conductive layer and the second conductive layer are both metal conductive layers, the resistance of the first conductive layer is 1-6Ω, and the resistance of the second conductive layer is 1-6Ω.

Optionally, the display device comprises at least one sounding area arranged in the non-display area, and a plurality of directional sounding units are arranged in the sounding area in an array manner;

the display panel further comprises a glue frame arranged around the sounding area, and the glue frame is optical glue.

Optionally, the rubber frame includes a plurality of gluey sections that the interval set up, and adjacent two be provided with the opening between the gluey section, the opening is used for providing the air circulation passageway.

Optionally, the display panel further includes:

the first polarizing layer is arranged on one side, far away from the array substrate, of the pixel unit and the directional sounding unit, and the vibration layer at least comprises the first polarizing layer; and/or

And the second polarizing layer is arranged on one side of the array substrate far away from the pixel unit.

In a second aspect, the present application provides a method for preparing a display panel, for preparing a display panel as described in any one of the above, the method comprising:

preparing a first pair of cartridge substrates comprising: providing an array substrate, and forming a second conductive layer, a first support column, a display electrode and a display layer on the array substrate;

preparing a second pair of box substrates, providing a first polarizing layer, and forming a first conductive layer on the first polarizing layer;

and forming a glue frame on the first pair of box substrates or the second pair of box substrates, and forming the display panel by the first pair of box substrates and the second pair of box substrates according to a preset relation.

In a third aspect, the present application provides a display device comprising a display panel as described in any one of the above.

The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:

according to the display panel provided by the embodiment of the application, the directional sounding unit is arranged on the surface film layer of the non-display area, so that the directional sounding structure can be directly integrated on the display panel, and the light, thin, ultra-narrow frame and good-integration directional sounding display panel can be realized; the remote directional audio transmission is realized through the directional sound generating unit, so that the sound attenuation degree is reduced, and further noise interference is prevented; the peep-proof sound can be realized without earphone, and the influence of the earphone worn for a long time on the hearing is prevented.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;

fig. 2 is a top view of an array substrate according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of an array substrate according to an embodiment of the present application;

fig. 4 is a top view of a display panel according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first pair of box substrates according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a second pair of box substrates according to an embodiment of the present application.

Detailed Description

The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 in detail, the present application provides a display panel, including a display area D1 and a non-display area D2, the display panel further includes:

an array substrate 100;

a plurality of pixel units 200 disposed on the array substrate 100, the pixel units 200 being disposed in the display area D1;

the directional sounding unit 300 is arranged on the array substrate 100, the directional sounding unit 300 is arranged in the non-display area D2, the directional sounding unit 300 comprises a first conductive layer 310, a vibrating cavity layer 330, a second conductive layer 340 and a vibrating layer 360 which are arranged in a laminated mode, the first conductive layer 310 and the second conductive layer 340 are used for applying sounding signals, the vibrating cavity layer 330 is used for forming a vibrating cavity between the first conductive layer and the second conductive layer, and the vibrating layer 360 is used for vibrating sounding under the action of the sounding signals.

The display panel provided by the embodiment of the application can directly integrate the directional sounding structure on the display panel through the directional sounding unit 300 arranged on the surface film layer of the non-display area D2, and can realize a light, thin, ultra-narrow frame and good-integration directional sounding display panel; the directional sound unit 300 also realizes remote directional audio transmission, reduces the attenuation degree of sound, and further prevents noise interference; the peep-proof sound can be realized without earphone, and the influence of the earphone worn for a long time on the hearing is prevented.

In an embodiment of the present application, the vibration cavity is an air gap formed between the first conductive layer 310 and the second conductive layer 340, which allows the vibration layer 360 to vibrate in response to the application of the sounding signal, so as to emit the modulated ultrasonic wave into the air, and self-demodulate into audible sound in the air, thereby realizing directional sounding.

In this embodiment of the present application, the directional sounding layer further includes a first insulating layer 320 disposed on a side of the cavity layer 330 away from the array substrate 100, and a second insulating layer 350 disposed on a side of the cavity layer 330 close to the array substrate 100, where the first insulating layer 320 covers the first conductive layer 310, and the second insulating layer 350 covers the second conductive layer 340.

In the present application, the vibration layer 360 includes at least the first insulating layer 320; the vibrating cavity layer 330 includes a plurality of first support columns 370 spaced apart.

In the embodiment of the present application, the first insulating layer 320 is used to protect the first conductive layer 310 and enhance the breakdown resistance of the first conductive layer 310, in addition to the vibration layer 360 used for sounding. The second insulating layer 350 serves to protect the second conductive layer 340 and enhance the puncture resistance of the second conductive layer 340. The materials of the first insulating layer 320 and the second insulating layer 350 may be inorganic materials such as silicon nitride (SiNx), silicon oxide (SiOx), or silicon oxynitride (SiOxNy), or organic materials such as polysiloxane and polysilazane.

Illustratively, the thickness of the first insulating layer 320 ranges from 15 to 25 μm; the thickness of the second insulating layer 350 ranges from 15 to 25 μm. The thickness of the first insulating layer 320 and the second insulating layer 350 ensures that the breakdown voltage is equal to or greater than 400V.

In addition, the shape, size, spacing, height, etc. of the first support columns 370 may be calculated by simulation to obtain suitable parameters, which are not particularly limited in the embodiment of the present application. The material of the first support column 370 may be an organic film or a resin-based organic material. The first support column 370 may have a square, rectangular, trapezoidal, inverted trapezoidal, etc. cross-sectional shape in a direction perpendicular to the display panel.

It should be noted that, the height of the first support column 370 and the interval between the first support columns 370 have a certain influence on the audible sound pressure level, the larger the interval between the first support column 370 and the first support column 370 is, the larger the amplitude of a single vibration unit is, the larger the sound pressure level is, and the influence of the performance and the reliability of the membrane material needs to be comprehensively considered, so that the problems that the membrane material loses the shaping deformation and the device function is invalid due to the overlarge amplitude and the overlarge sound pressure level are avoided.

Illustratively, the first support column 370 has a height in the range of 5-15 μm; the radial dimension of the bottom surface of the first support column 370 contacting the second insulating layer 350 ranges from 15 to 20 μm; the top surface of the first support column 370 has a radial dimension in the range of 5 to 12 μm. The interval between adjacent two first support columns 370 may be 0.5mm to 2mm.

It can be appreciated that in the embodiment of the present application, when the directional sound unit 300 is designed, a preferred technical solution may be determined through software simulation. Firstly, simulating by simulation software, determining the range of each layer of parameters in the design scheme of the directional sounding unit 300, and outputting the whole technical scheme and the expected effect; then, the geometric dimensions of the input film material, the first insulating layer 320, the second insulating layer 350, the first supporting columns 370 and the like, including thickness, length, width, radius and the like, are simulated, the material parameters of the input film material, the first supporting columns 370 and the insulating layers, including thermal expansion coefficient, young's modulus, poisson's ratio, density, dielectric constant and the like, are input, and voltage is applied; then, simulating and outputting an ultrasonic frequency response curve; based on these characteristic parameters, the input values are continuously optimized, and an optimal scheme is determined.

The specific working principle of the directional sounding unit 300 is: processing the audio signal, modulating the audio signal to the vicinity of 80KHz of an ultrasonic frequency band, amplifying the audio signal and transmitting the audio signal to the directional sounding unit 300; when the amplified mixed signal is applied to the first electrode layer and the second electrode layer of the directional sounding unit 300, an electric field between the first electrode layer and the second electrode layer generates coulomb force, and the coulomb force drives the vibration layer 360 to vibrate at the frequency of the mixed signal, so as to generate corresponding ultrasonic waves; after being emitted out of the display device, the ultrasonic wave has super-strong directivity, propagates in an approximately linear manner in the air, continuously demodulates an audible audio signal through nonlinear interaction during the propagation along the propagation axis, and the continuously demodulated sound waves are superimposed and accumulated to finally form an emission-end type virtual sound array, and the virtual array of the sound source is called a parametric sound matrix. The parametric acoustic matrix allows to continuously increase the acoustic energy in the acoustic direction, and due to the strong directivity of the ultrasonic wave, the superposition effect of the propagation outwards in the main axis direction will be very weak, eventually leading to superposition and pooling of the acoustic wave propagating with high directivity in the main propagation direction.

The display panel includes a liquid crystal display ((Liquid Crystal Display, LCD) panel, an organic light emitting diode display (Organic Light emitting Display, OLED) panel, etc., the LCD display panel is exemplified in the present application.

The pixel unit 200 includes a display electrode and a display layer 220 that are stacked, and the display layer 220 includes a plurality of second support columns 230 that are disposed at intervals.

When the display panel is a liquid crystal display panel, the display panel further includes a color film substrate 250 disposed on a side of the display layer 220 away from the driving substrate, and the color film substrate 250 may include color filters of different colors so as to perform color display. The display layer 220 includes liquid crystal molecules between the array substrate 100 and the color film substrate 250, and the like, and the display layer 220 is a liquid crystal layer formed by aligning the color film substrate 250 and the array substrate 100, and by arranging a plurality of second support columns 230 on the liquid crystal layer, the alignment pressure of the liquid crystal layer on the box can be reduced, thereby reducing the probability of leakage of sounding liquid crystal.

In the LCD display panel, liquid crystal molecules are filled between the array substrate 100 and the color film substrate 250, and gray scale display is achieved by controlling the common electrode and the display electrode to form an electric field driving the liquid crystal to deflect. According to the display mode, LCDs can be classified into: twisted Nematic (TN) display mode, in-plane switching (In Plane Switching, IPS) display mode, advanced super-dimensional field switching (High Aperture Advanced Super Dimension Switch, HADS) display mode, and the like.

The display electrode may include a pixel electrode and/or a common electrode, and the display electrode is used to apply a display signal to the pixel unit 200. The shape of the display electrode is not limited in the embodiment of the application, and in different embodiments, the display electrode can be a block electrode or a strip electrode, and the shape of the strip electrode can be an inclined strip, a zigzag, an X shape, a Y shape, and the like. The shape of the display electrode can be selected according to the requirements according to the device and the application scene.

In the present application, the shapes of the first conductive layer 310 and the second conductive layer 340 may be the same as or similar to the shapes of the display electrodes, the shapes of the first conductive layer 310 and the second conductive layer 340 may be block electrodes or stripe electrodes, etc., and the shapes of the stripe electrodes may be oblique stripes, zigzag stripes, X-shapes, Y-shapes, etc.

The material of the display electrode includes a transparent metal oxide conductive material or other suitable material, which is, for example (but not limited to): indium Tin Oxide (ITO), indium Zinc Oxide (IZO), aluminum Zinc Oxide (AZO), zinc oxide (ZnO), indium Gallium Zinc Oxide (IGZO), or other suitable materials.

The first conductive layer 310 and the display electrode are arranged on the same layer, and the first conductive layer 310 and the display electrode are formed by the same process; the first support column 370 and the second support column 230 are formed by the same process.

In the embodiment of the application, the pixel unit 200 and some layers of the directional sounding unit 300 are formed by adopting the same process, so that the preparation steps can be effectively saved, the preparation process is simplified, and the preparation efficiency is improved. It should be noted that the term "same layer arrangement" in the present application means that, in the preparation process, a film layer formed of the same material is subjected to patterning treatment to obtain at least two different features. For example, the first conductive layer 310 and the display electrode in this embodiment are obtained by patterning the same conductive film layer, and the first conductive layer 310 and the display electrode are disposed on the same layer. The other descriptions refer to the above embodiments, and are not repeated here.

It should be noted that, the forming process of each film layer in the embodiment of the present application is a patterning process, which may include a photolithography process, or include a photolithography process and an etching step, and may also include other processes for forming a predetermined pattern, such as printing, ink-jet, and the like; the photolithography process refers to a process of forming a pattern using photoresist, a mask plate, an exposure machine, etc., including processes of film formation, exposure, development, etc. The corresponding molding process may be selected according to the structure formed in the present application.

The array substrate 100 includes a substrate 101 and a thin film transistor layer on the substrate 101, where the thin film transistor layer includes a first driving unit disposed in the display area D1 and a second driving unit 110 disposed in the non-display area D2, the first driving unit is in one-to-one correspondence with the pixel units 200, the first driving unit is used to provide display signals for the pixel units 200, the second driving unit 110 is in one-to-one correspondence with the directional sounding units 300, and the second driving unit 110 is used to provide sounding signals for the directional sounding units 300.

Wherein the first driving unit and the second driving unit 110 are formed through the same process. The preparation method adopts the same process to prepare the material, can effectively save preparation steps, simplify the preparation process and improve the preparation efficiency. The first driving unit is disposed in a manner similar to that of the second driving unit 110 in the present application, and the structure of the second driving unit 110 is exemplarily described in the present application. Of course, in other embodiments, the first driving unit may be disposed in various manners in the prior art, which is not limited by the present application.

The substrate 101 is a carrier of other film structures in the display panel, and may be a rigid substrate 101 or a flexible substrate 101, and the material of the substrate 101 includes at least one of glass, plastic, silicon dioxide, polyethylene, polypropylene, polystyrene, polylactic acid, polyethylene terephthalate, polyimide, or polyurethane.

As shown in fig. 2 to 3, the second driving unit 110 includes a driving circuit for driving the directional sounding unit 300, a gate line 111, a data line 112, a power line, and the like. In general, the second driving unit 110 corresponding to each directional sounding unit 300 includes one or more thin film transistors and the like, and is electrically connected with the corresponding gate line 111, data line 112, and power line. The one or more thin film transistors at least include a driving transistor, and a source or a drain of the driving transistor is electrically connected to the second conductive layer 340 (or the first conductive layer 310) to provide a sounding signal to the second conductive layer 340.

In this embodiment, the thin film transistor may be a top gate structure, a bottom gate structure, or a dual gate structure, which is not limited in the present application. In the embodiment of the present application, a bottom gate structure is exemplarily described, wherein the thin film transistor includes a gate metal layer 102, a gate insulating layer 103, an active layer 104, a source drain metal layer 105, and a passivation layer 106, which are sequentially stacked. It will be appreciated that the thin film transistor may also include more layers in various embodiments, as the application is not limited in this regard.

The source or the drain of the thin film transistor on the second driving unit 110 is electrically connected to the second conductive layer 340 or the first conductive layer 310, so as to provide a sounding signal to the first conductive layer 310 or the second conductive layer 340, for example, the second conductive layer 340 is electrically connected to the source/drain metal layer 105 through the via hole 107 disposed on the passivation layer 106.

It is understood that in one embodiment of the present application, the second conductive layer 340 may be formed by the same process as the display electrode, for example, an ITO material is used to transmit light and transmit signal voltage, and a magnetron sputtering process is used to manufacture the display electrode, the resistance is 10 to 70 Ω, but the resistance of ITO is relatively large, and delay is easily caused by signal transmission, and since the directional sounding unit 300 is disposed in the non-display area D2, the first conductive layer 310 and the second to conductive layers may also directly use a metal layer as the conductive material.

In other embodiments, the second conductive layer 340 may be disposed on the same layer as the other metal trace layer 120 on the first driving unit and formed by the same process, such as a gate line, a data line, a power line, etc. Of course, in other embodiments, a separate arrangement is also possible, and the application is not limited in this regard.

Optionally, the first conductive layer 310 and the second conductive layer 340 are both metal conductive layers, the resistance of the first conductive layer 310 is 1 to 6Ω, and the resistance of the second conductive layer 340 is 1 to 6Ω. In the embodiment of the application, by adopting the metal conductive layer, the resistance of the first conductive layer 310 and the second conductive layer 340 can be reduced, the signal transmission speed is improved, and the conductive uniformity is improved to improve the directional sounding effect. In the embodiment of the application, since the directional sounding unit 300 is arranged in the non-display area D2, the display area D1 of the display panel is not blocked, so that the display panel can display images normally.

Wherein the material of the metal conductive layer may include one or more of molybdenum (Mo), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), titanium (Ti), tungsten (W), and copper (Cu).

Optionally, at least one sounding area D3 disposed in the non-display area D2 is included, and a plurality of directional sounding units 300 are disposed in an array in the sounding area D3.

It should be noted that, in the embodiment of the present application, the plurality of directional sounding units 300 are arranged in the sounding area D3 along the first direction X or the second direction Y in an array. In the embodiment of the present application, the first direction X and the second direction Y may be perpendicular to each other or may be nearly perpendicular to each other, and the present application is not limited to the specific directions of the first direction X and the second direction Y. The directional sounding unit 300 may be arranged in the same manner as the pixel units 200, that is, the pixel units 200 are arranged in the first direction X or the second direction Y in the display area D1.

In the embodiment of the application, a plurality of directional sounding units 300 and second driving units 110 corresponding to each directional sounding unit 300 are arranged in an array, and sounding of each directional sounding unit 300 can be independently controlled through the second driving units 110, so that sounding effect of directional sounding is improved. It can be appreciated that in the embodiment of the present application, the size, number, position, etc. of the sounding regions D3 are not limited, and the sounding regions D3 may be disposed on one side, two sides, or four sides of the display region D1, etc., and are determined according to application scenarios and the like in specific applications.

As shown in fig. 4, the display panel further includes a glue frame 380 disposed around the sound generating area D3, where the glue frame 380 is optical glue.

The display panel of the present application further includes a frame sealing adhesive 240 located between the array substrate 100 and the color film substrate 250 and sealing the display layer 220; the sealant 240 is located in the non-display area D2 and surrounds the display area D1. Alternatively, the frame sealing compound 240 may be an optical compound, which is used to bond the array substrate 100 and the color film substrate 250, thereby sealing the display layer 220. Optionally, the material of the frame seal 240 and the frame 380 is the same. The material of both the frame seal 240 and the frame 380 is Optical Clear Adhesive (OCA). Optionally, the frame sealing glue 240 and the glue frame 380 may be prepared by a single process, so that preparation steps can be effectively saved, the preparation process is simplified, and the preparation efficiency is improved.

In one embodiment of the present application, the glue frame 380 includes a plurality of glue segments 381 disposed at intervals, and an opening 382 is disposed between two adjacent glue segments 381, where the opening 382 is used to provide an air circulation channel. In the application, by arranging the opening 382 on the rubber frame 380, an air circulation channel which is beneficial to air circulation is formed on the vibration cavity between the first conductive layer 310 and the second conductive layer 340, so that the sound transmission efficiency is improved, and the directional sound production is facilitated.

With continued reference to fig. 1, the display panel further includes:

a first polarizing layer disposed at a side of the pixel unit 200 and the directional sounding unit 300 remote from the array substrate 100, the vibration layer 360 including at least the first polarizing layer; and/or

And a second polarizing layer disposed on a side of the array substrate 100 remote from the pixel unit 200.

In the embodiment of the application, the first polarizing layer and the first insulating layer 320 are used together as the vibration layer 360 of the directional sounding unit 300, so that the directional sounding effect can be improved, and the display device with flexibility, light weight and ultra-narrow frame can be further realized. The first polarizer may include a cellulose triacetate TAC layer 401 (or a polycyclopentadiene OPC film), a polyvinyl alcohol PVA film 402, and a scratch-proof tac+hc film 403 sequentially disposed on the array substrate 100 along a distance. The TAC+HC film is prepared by carrying out nano hardening HC treatment on the TAC, wherein HC is a surface treatment mode of the first polaroid and prevents the polaroid from being scratched. The second polarizing layer may include a pressure-sensitive adhesive PSA film 501, a TAC film 502, a PVA film 503, and a scratch-proof tac+hc film 504, which are sequentially disposed.

The application also provides a preparation method of the display panel, which is used for preparing the display panel according to any one of the above, and comprises the following steps:

s100, preparing a first pair of cartridge substrates 600, including: an array substrate 100 is provided, and a second conductive layer 340, a first support column 370, a display electrode, and a display layer 220 are formed on the array substrate 100.

The array substrate 100 includes a first driving unit formed on the display area D1 and a second driving unit 110 formed on the non-display area D2, and the forming processes of the first driving unit and the second driving unit 110 are substantially identical, which include the forming process Gate, SD, ACT, PVX and other processes, and are not described in detail.

The second conductive layer 340 is prepared on the array substrate 100, in which the above steps are completed, using a coating, exposing, developing process, or a screen printing process. In the embodiment of the present application, the second conductive layer 340 may be disposed on the same layer as the pixel electrode or the second conductive layer 340 may be disposed on the same layer as the metal wiring layer 120 of the display area D1 and formed by the same process. The resulting structure is shown in fig. 5.

It should be noted that, in the embodiment of the present application, the first support column 370 may be disposed on the first pair of box substrates 600 and may also be disposed on the second pair of box substrates 700, which is not limited to this, and in the present application, the first support column 370 and the second support column 230 are illustratively disposed on the first pair of box substrates 600, and may be formed by the same process, and the display layer 220 may be formed by using a liquid crystal dropping (ODF) technique. When the liquid crystal dropping technique is adopted, a closed frame sealing glue 240 is formed on the array substrate 100, then liquid crystal is filled (dropped) in the area surrounded by the frame sealing glue 240, and then a liquid crystal box is formed by involution.

The step S100 further includes forming a frame 380 disposed around the sound-producing area D3 and a frame sealing adhesive 240 disposed around the display area D1 on the second insulating layer 350, where the frame sealing adhesive 240 and the frame sealing adhesive 380 may be formed by a single process.

S200, preparing a second pair of box substrates 700, providing a first polarizing layer, and forming a first conductive layer 310 and a first insulating layer 320 on the first polarizing layer. The first conductive layer 310 and the first insulating layer 320 may be prepared on the first polarizing layer using a coating, exposing, developing process, or screen printing process. The resulting structure is shown in fig. 6.

And S300, forming a glue frame 380 on the first pair of box substrates 600 or the second pair of box substrates 700, wherein the first pair of box substrates 600 and the second pair of box substrates 700 form the display panel according to a preset relation.

It should be understood that in the embodiment of the present application, the adhesive frame 380 may be disposed on the first pair of box substrates 600 or the second pair of box substrates 700, which is not limited in this aspect of the present application, and the adhesive frame 380 may be formed by the same process as the frame sealing adhesive 240.

Based on the same inventive concept, the present application provides a display device comprising a display panel as any one of the above. The display device can be a television, or a display terminal device with a display function, such as a PC, a smart phone, a tablet personal computer, an electronic book reader, an MP3 (Moving Picture Experts Group Audio Layer III, dynamic image expert compression standard audio layer) player, an MP4 (Moving Picture Experts Group Audio Layer IV, dynamic image expert compression standard audio layer) player, a portable computer, and the like.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the application. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present application has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the application to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the application, which variations and modifications are within the scope of the application as claimed.

Claims

1. A display panel comprising a display area and a non-display area, the display panel further comprising:

an array substrate;

2. The display panel of claim 1, wherein the directional sounding layer further comprises a first insulating layer disposed on a side of the cavity layer away from the array substrate and a second insulating layer disposed on a side of the cavity layer closer to the array substrate, the first insulating layer overlying the first conductive layer and the second insulating layer overlying the second conductive layer;

the vibration layer at least comprises the first insulating layer;

3. The display panel according to claim 2, wherein the pixel unit comprises a display electrode and a display layer which are stacked, and the display layer comprises a plurality of second support columns which are arranged at intervals;

4. The display panel according to claim 1, wherein the array substrate comprises a substrate and a thin film transistor layer on the substrate, the thin film transistor layer comprises a first driving unit arranged in the display area and a second driving unit arranged in the non-display area, the first driving unit is in one-to-one correspondence with the pixel units, the first driving unit is used for providing display signals for the pixel units, the second driving unit is in one-to-one correspondence with the directional sounding units, and the second driving unit is used for providing the sounding signals for the directional sounding units;

5. The display panel according to claim 1, wherein the first conductive layer and the second conductive layer are both metal conductive layers, the first conductive layer has a resistance of 1 to 6Ω, and the second conductive layer has a resistance of 1 to 6Ω.

6. The display panel of claim 1, comprising at least one sound emitting region disposed in the non-display region, the sound emitting region having a plurality of directional sound emitting units disposed therein in an array;

7. The display panel of claim 6, wherein the frame comprises a plurality of spaced apart glue segments, and an opening is disposed between two adjacent glue segments, the opening being configured to provide an air flow channel.

8. The display panel of claim 1, further comprising:

9. A method for manufacturing a display panel according to any one of claims 1 to 8, comprising:

10. A display device comprising a display panel as claimed in any one of claims 1-8.