CN116033317A

CN116033317A - Display device and manufacturing method thereof

Info

Publication number: CN116033317A
Application number: CN202111241131.5A
Authority: CN
Inventors: 郭兴奎; 陈俊生; 臧远生
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: 2021-10-25
Filing date: 2021-10-25
Publication date: 2023-04-28

Abstract

The application provides a display device and a manufacturing method thereof. The display device comprises a display panel, a sound generating unit arranged on the light emitting side of the display panel and a vibration unit layer arranged on one side of the sound generating unit away from the display panel; the sound generating unit comprises a first electrode layer, a first metal layer, a first insulating layer, a columnar spacer layer, a second insulating layer, a second metal layer and a second electrode layer which are sequentially laminated along the light emitting direction of the display panel. According to the display device and the manufacturing method thereof, the film structures of the sounding units are directly manufactured on the display panel, the glass substrate formed by manufacturing the 1.1T glass substrate is saved, and gaps caused by externally hanging installation cannot occur, so that the display device can be thinned.

Description

Display device and manufacturing method thereof

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display device and a manufacturing method thereof.

Background

The directional audio transmission technology provides an effective sound propagation mode, can also project sound to a specific area in a highly directional manner without using a large loudspeaker array, and creates an accurate and silent independent audio space which does not interfere with the surrounding environment.

At present, the directional audio transmission technology is mainly applied to a sound system, and when the directional audio transmission technology is applied to the technical field of display, the directional audio transmission device can only be hung on a display device in an externally-hung mode, so that the thickness of the display device is increased, the externally-hung directional audio transmission device is difficult to cooperate with the display content of a display screen, and audio and video integration cannot be realized.

Disclosure of Invention

In view of the foregoing, an object of the present application is to provide a display device and a method for manufacturing the same.

Based on the above object, the present application provides a display device, including a display panel, a sound generating unit disposed on a light emitting side of the display panel, and a vibration unit layer disposed on a side of the sound generating unit away from the display panel; the sound generating unit comprises a first electrode layer, a first metal layer, a first insulating layer, a columnar spacer layer, a second insulating layer, a second metal layer and a second electrode layer which are sequentially laminated along the light emitting direction of the display panel.

Optionally, the first metal layer includes a first metal frame, a first electrode lead and a second electrode lead, the first metal frame is formed at an edge of the first electrode layer, the first electrode lead is formed at one end of the first electrode layer and is connected with the first metal frame, and the second electrode lead is formed at one end of the first electrode layer and is electrically insulated from the first metal frame;

The second metal layer comprises a second metal frame, and the second metal frame is connected with the second electrode lead;

the first electrode lead and the second electrode lead are used for connecting an external electrode.

Optionally, the device further comprises an electrical connection unit arranged on the second electrode lead, and the second electrode lead is connected with the second metal frame through the electrical connection unit.

Optionally, the display panel includes a plurality of pixel units;

the first metal layer further comprises first metal grid lines which are formed in the first metal frame and connected with the first metal frame, the first metal grid lines divide the first metal layer into a plurality of first metal grids, and each first metal grid is arranged corresponding to one or more pixel units of the display panel;

and/or the number of the groups of groups,

the second metal layer further comprises second metal grid lines which are formed in the second metal frame and connected with the second metal frame, the second metal grid lines divide the second metal layer into a plurality of second metal grids, and each second metal grid is arranged corresponding to one or more pixel units of the display panel.

Optionally, the orthographic projection of the first metal frame and the first metal grid line on the display panel is located in the orthographic projection of the first insulating layer on the display panel, and the orthographic projection of the second electrode lead on the display panel is not overlapped with the orthographic projection of the first insulating layer on the display panel;

orthographic projections of the first electrode lead and the second electrode lead on the display panel are not overlapped with orthographic projections of the second insulating layer on the display panel; the orthographic projections of the second metal frame and the second metal grid lines on the display panel are positioned in the orthographic projections of the second insulating layer on the display panel.

Optionally, the display panel includes a color film substrate, and the color film substrate includes a black matrix;

and orthographic projections of the first metal grid lines and the second metal grid lines on the color film substrate are positioned in the black matrix.

Optionally, the columnar spacer layer includes a plurality of columnar spacers arranged in an array, and sounding subunits are formed between the plurality of columnar spacers, and each sounding subunit is arranged corresponding to one or more pixel units of the display panel.

and orthographic projection of the columnar spacer on the color film substrate is positioned in the black matrix.

Optionally, the method further comprises:

the frame adhesive layer is arranged between the first insulating layer and the second insulating layer to bond the first insulating layer and the second insulating layer;

the frame glue layer comprises a plurality of frame glue units, an air circulation channel is arranged between every two adjacent frame glue units, a blocking unit parallel to the frame glue units is arranged on one side, close to the columnar spacer, of each air circulation channel, and the width of each blocking unit is larger than that of each air circulation channel.

Optionally, a first extension part is arranged at the end part of one side of the frame glue unit facing the blocking unit,

the end part of one side of the blocking unit facing the frame glue unit is provided with a second extension part,

two second extending parts are arranged between the two first extending parts arranged on the same frame glue unit, and the two second extending parts are arranged on different blocking units; two first extending parts are arranged between two second extending parts arranged on the same blocking unit, and the two first extending parts are arranged on different frame glue units.

Optionally, the vibration unit layer includes a first polarizer, and a second polarizer is disposed on a backlight surface of the display panel;

or,

the vibration unit layer comprises a protective layer, a third polaroid is arranged between the display panel and the sounding unit, and a second polaroid is arranged on the backlight surface of the display panel.

The application provides a manufacturing method of a display device, which comprises the following steps:

providing a display panel and a vibration unit layer;

sequentially forming a first electrode layer, a first metal layer and a first insulating layer on the light emergent side of the display panel, and sequentially forming a second electrode layer, a second metal layer and a second insulating layer on the side, close to the display panel, of the vibration unit layer;

forming a columnar spacer layer on the first insulating layer or the second insulating layer;

and attaching the first insulating layer and the second insulating layer to form the display device.

Optionally, at least one of the following is further included:

forming a material film layer of a first electrode layer on the display panel, and forming a pattern of the first electrode layer by a patterning process by using a mask;

forming a metal film on the first electrode layer, and forming a pattern of the first metal layer by a patterning process by using a mask;

Forming a first insulating layer material film on the first metal layer, and forming a pattern of the first insulating layer by a patterning process through a mask;

and forming a columnar spacer material film on the first insulating layer or the second insulating layer, and forming a pattern of the columnar spacer layer by a patterning process by using a mask.

Optionally, the display panel includes a color film substrate, and the vibration unit layer includes a first polarizer;

the first electrode layer, the first metal layer and the first insulating layer are sequentially formed on the light emergent side of the display panel, and the method comprises the following steps:

sequentially forming the first electrode layer, the first metal layer and the first insulating layer on the color film substrate;

the vibration unit layer is close to one side of the display panel and forms a second electrode layer, a second metal layer and a second insulating layer in sequence, and the vibration unit layer comprises:

and sequentially forming the second electrode layer, the second metal layer and the second insulating layer on one side of the first polaroid, which is close to the display panel.

Optionally, a third polarizer is disposed on the light-emitting side of the display panel, and the third polarizer includes a first adhesive layer, a first protective film, a first linear polarizer and a second protective film that are sequentially stacked along a light-emitting direction far away from the display panel; the vibration unit layer includes a protective layer;

providing a second protective film, sequentially forming the first electrode layer, the first metal layer and the first insulating layer on one side of the second protective film, sequentially forming the first linear polarizer, the first protective film and the first adhesive layer on the other side of the second protective film, and attaching the first adhesive layer to the display panel;

and forming the second electrode layer, the second metal layer and the second insulating layer in sequence on one side of the protective layer, which is close to the display panel.

Optionally, the display panel includes a color film substrate, and the color film substrate includes a black matrix; the columnar spacer layer comprises a plurality of columnar spacers arranged in an array; the forming the pattern of the columnar spacer layer by a patterning process using a mask plate comprises:

and forming the columnar spacer on the first insulating layer or the second insulating layer by adopting a mask plate through a patterning process, so that orthographic projection of the columnar spacer on the color film substrate is positioned in the black matrix.

As can be seen from the above description, in the display device and the manufacturing method thereof provided by the present application, each film structure of the sound generating unit is directly manufactured on the display panel, that is, the first electrode layer, the first metal layer, the first insulating layer, the columnar spacer layer, the second insulating layer, the second metal layer and the second electrode layer of the sound generating unit are directly formed on the upper glass substrate of the display panel, so that the sound generating unit is integrated on the display panel, thereby saving the glass substrate manufactured by the 1.1T glass substrate, and further reducing the thickness of the display device; meanwhile, as each film structure of the sounding unit is directly manufactured on the display panel, gaps caused by externally hung installation cannot occur, and therefore the display device can be further thinned.

Drawings

In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.

FIG. 1 is a schematic diagram of a display device in the prior art;

fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present application;

FIGS. 3a-3f are schematic diagrams illustrating the structure of a first metal layer according to embodiments of the present application;

FIGS. 4a-4b are schematic diagrams illustrating the structure of a second metal layer according to embodiments of the present application;

fig. 5a is a schematic structural diagram of a sealant layer according to an embodiment of the present application;

fig. 5b is another schematic structural diagram of the sealant layer according to the embodiment of the present application;

fig. 6 is another schematic structural diagram of a display device according to an embodiment of the present application;

fig. 7 is a schematic view of another structure of a display device according to an embodiment of the disclosure;

fig. 8 is a flow chart of a method for manufacturing a display device according to an embodiment of the disclosure;

FIG. 9a is a schematic diagram illustrating a manufacturing process of a part of a sounding structure according to an embodiment of the present disclosure;

FIG. 9b is a schematic diagram illustrating a manufacturing process of another part of the sounding structure according to the embodiment of the present application;

FIG. 10a is a schematic diagram illustrating another manufacturing process of a part of the sounding structure according to the embodiment of the present application;

fig. 10b is a schematic diagram of another manufacturing flow of another part of the sounding structure according to the embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings.

It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

The directional audio transmission technology is that an audio signal and an ultrasonic carrier signal are modulated, an audio directional transducer emits ultrasonic waves into the air, and the ultrasonic waves are utilized to propagate in the air with super-strong directivity and nonlinear acoustic effect, and after a certain distance of propagation, the audio signal is demodulated to form an audible sound signal with strong directivity, so that the directional propagation effect of the audio signal is achieved.

As shown in fig. 1, a first polarizer (upper polarizer) 1' is disposed on the light-emitting surface of the display panel 2, a second polarizer (lower polarizer) 3 may be disposed on the back surface of the display panel, and a sounding structure 4' is externally mounted on one side of the second polarizer 3' away from the display panel 2. The sound generating structure 4' comprises from bottom to top: the glass substrate 410, the first electrode layer 401, the first metal layer 402, the first insulating layer 403, the columnar spacer layer 404, the first adhesive layer 405, the second insulating layer 406, the second metal layer 407, the second electrode layer 408, and the protective layer (PET film) 5', and the protective layer 5' sounds as a vibration unit of the sound-emitting structure 4 '. Wherein the glass substrate 410 is made of a 1.1T glass substrate.

The thickness of the display device is thicker, which is unfavorable for the integrity and the thinness of the display device.

For the above reasons, the present application provides a display device, by integrating the sounding structure 4 'on the display panel 2, a gap caused by external hanging between the display panel 2 and the sounding structure 4' will not occur, and meanwhile, the glass substrate 410 need not be manufactured, so that the thickness of the display device can be reduced.

As shown in fig. 2, the display device according to the embodiment of the present application includes a display panel 2, a sound generating unit 4 disposed on a light emitting side of the display panel 2, and a vibration unit layer 5 disposed on a side of the sound generating unit 4 away from the display panel 2. The display panel 2 includes an array substrate, a liquid crystal layer 203, and a color film substrate, which are sequentially stacked, the array substrate includes a glass substrate 201 and a Thin Film Transistor (TFT) 202 disposed on the glass substrate 201, and the color film substrate includes a color film layer 204 and an upper glass substrate 205 of the color film substrate. The sound generating unit 4 includes a first electrode layer 401, a first metal layer 402, a first insulating layer 403, a columnar spacer layer 404, a second insulating layer 406, a second metal layer 407, and a second electrode layer 408, which are sequentially stacked in the light emitting direction of the display panel 2; wherein the columnar spacer layer 404 is formed with an ultrasonic vibration chamber; the first electrode layer 401 and the second electrode layer 408 are electrodes of the sound generating unit 4, which may be ITO film layers, and signal voltages are transmitted through the first electrode layer 401 and the second electrode layer 408, so that voltages are applied to the ultrasonic vibration chambers of the columnar spacer layer 404 to control the vibration of the ultrasonic vibration chambers; the vibration is conducted to the vibration unit layer 5, and directional vibration sounding is achieved through the vibration unit layer 5.

In this embodiment, each film structure of the sound generating unit 4 is directly fabricated on the display panel 2, that is, the first electrode layer 401, the first metal layer 402, the first insulating layer 403, the columnar spacer layer 404, the second insulating layer 406, the second metal layer 407 and the second electrode layer 408 of the sound generating unit 4 are directly formed on the upper glass substrate 205 of the display panel 2, so that the sound generating unit 4 is integrated on the display panel 2, and the glass substrate 410 formed by a 1.1T glass substrate can be saved, so that the display device can be thinned; meanwhile, as each film structure of the sound generating unit 4 is directly manufactured on the display panel 2, gaps caused by externally hung installation can not occur, and therefore the display device can be further thinned.

In some embodiments, as shown in fig. 3a, 3c, the first metal layer 402 includes a first metal frame 4021, a first electrode lead 4022, and a second electrode lead 4023 formed on the first electrode layer 401. The first metal frame 4021 is formed at an edge of the first electrode layer 401, and the first electrode lead 4022 and the second electrode lead 4023 are formed at one end of the first electrode layer 401 and connected to external electrodes, respectively. Meanwhile, the first electrode lead 4022 is connected to the first metal frame 4021, so that signals transmitted from external electrodes can be rapidly transmitted to the whole first electrode layer 401 through the first metal frame 4021, and transmittance of the display device is ensured. The second electrode lead 4023 is formed at one end of the first electrode layer 401 and is electrically insulated from the first metal frame 4021.

As shown in fig. 3a and 3b, the first electrode lead 4022 and the second electrode lead 4023 are both disposed at one end on the first electrode layer 401, the second electrode lead 4023 is disposed in the middle and electrically insulated from the first metal frame 4021, and two first electrode leads 4022 are disposed at two sides of the second electrode lead 4023 and connected to the first metal frame 4021, respectively, so as to integrate the bonding electrode at one side.

As shown in fig. 3c, 3e, a first electrode lead 4022 is disposed in the middle and connected to a first metal frame 4021, and two second electrode leads 4023 are disposed on either side of the first electrode lead 4022 and electrically insulated from the first metal frame 4021, respectively, to thereby enable integration of the bonded electrode on one side.

As shown in fig. 4a, the second metal layer 407 includes a second metal frame 4071, and the second metal frame 4071 is formed at an edge of the second electrode layer 408 and is connected to the second electrode lead 4023, so that a signal transmitted from an external electrode can be rapidly transmitted to the entire second electrode layer 408 through the second metal frame 4071 while ensuring transmittance of the display device.

In the above embodiment, the first electrode lead 4022 and the second electrode lead 4023 are both formed at one end on the first electrode layer 401, so that the binding electrode for connecting with an external electrode is integrated at one side, on one hand, the manufacture of the first electrode lead 4022 and the second electrode lead 4023 can be facilitated, and the process difficulty is reduced; on the other hand, the first electrode lead 4022 and the second electrode lead 4023 are integrated on one side and are arranged in the same layer, so that the thickness of the display device can be prevented from being increased due to the fact that the two electrode leads are arranged independently, and the thickness of the display device can be reduced.

Optionally, the display device further includes an electrical connection unit 4024 disposed on the second electrode lead 4023, and the second electrode lead 4023 is connected to the second metal frame 4071 by the electrical connection unit 4024. In this embodiment, since the first insulating layer 403, the columnar spacer layer 404, and the second insulating layer 406 are further included between the first metal layer 402 and the second metal layer 407, and the first electrode layer 401 and the second electrode layer 408 need to be electrically insulated, an electrical connection unit 4024 needs to be formed between the second electrode lead 4023 and the second metal frame 4071, so that electrical connection between the second metal layer 407 and the second electrode lead 4023 is achieved.

Alternatively, as shown in fig. 3e, the extension portion of the electrical connection unit 4024 may be electrically insulated above the first metal frame 4021, so that the extension portion of the electrical connection unit 4024 may be connected to both the second metal frame 4071, and thus, the electrical signal on the second electrode lead 4023 may be better transmitted to the second metal frame 4071. Alternatively, the extension portion of the electrical connection unit 4024 may include a gold ball so as to achieve connection with the second metal frame 4071. A non-conductive paste 4026 may be disposed over the first electrode lead 4022 so as to avoid electrical connection of the first electrode lead 4022 to the second metal frame 4071.

Alternatively, in a case where higher accuracy is required, the thicknesses of the first metal layer 402 and the second metal layer 407 may be 3 μm or less, and the widths of the first metal frame 4021 and the second metal frame 4071 may be less than 4mm. In this embodiment, the first metal frame 4021 and the second metal frame 4071 may be manufactured by using an LCD process equipment process, and a patterning process is used to form the first metal frame 4021 and the second metal frame 4071 by using a mask, so that the widths of the first metal frame 4021 and the second metal frame 4071 may be smaller than 4mm, and the thicknesses of the first metal layer 402 and the second metal layer 407 may be smaller than or equal to 3 μm.

In some embodiments, the display panel 2 includes a plurality of pixel units. As shown in fig. 3b, 3d, 3e, and 3f, the first metal layer 402 further includes first metal grid lines 4025 formed in the first metal frame 4021 and connected to the first metal frame 4021, and the first metal grid lines 4025 divide the first metal layer 402 into a plurality of first metal grids, each of which is disposed corresponding to one or more pixel units of the display panel 2.

As shown in fig. 4b, the second metal layer 407 further includes second metal grid lines 4072 formed in the second metal frame 4071 and connected to the second metal frame 4071, and the second metal grid lines 4072 divide the second metal layer 407 into a plurality of second metal grids, each of which is disposed corresponding to one or more pixel units of the display panel 2.

Alternatively, in the above embodiment, the first metal grid lines 4025 and the second metal grid lines 4072 may be formed on both the first metal layer 402 and the first metal layer 402, or the first metal grid lines 4025 may also be formed only on the first metal layer 402 without forming the second metal grid lines 4072 on the first metal layer 402 to increase the transmittance of the display device. The LCD manufacturing process equipment process can be adopted, the first metal grid lines 4025 and/or the second metal grid lines 4072 are formed through the mask plate by adopting the patterning process, the overall resistance can be effectively reduced through the arrangement of the first metal grid lines 4025 and/or the second metal grid lines 4072, and compared with a metal frame manufactured through the screen printing process in the prior art, the metal frame has the same 1-6Ω resistance, the frame can be narrower, and therefore the effect of a narrow frame can be achieved.

In some embodiments, the display panel 2 includes a color film substrate including a black matrix; the orthographic projections of the first metal grid lines 4025 and the second metal grid lines 4072 on the color film substrate are located in the black matrix, so that the reduction of transmittance of the display device caused by shielding light by the first metal grid lines 4025 and the second metal grid lines 4072 can be avoided. In some embodiments, the first metal grid lines 4025 and the second metal grid lines 4072 may not be formed above the black matrix.

Alternatively, the first metal grid lines 4025 may be disposed parallel to each side of the first metal frame 4021, or may have a certain angle with each side of the first metal frame 4021; the first metal grid lines 4025 may be straight lines or non-straight lines. Correspondingly, the second metal grid lines 4072 may be disposed parallel to each side of the second metal frame 4071, or may have a certain angle with each side of the second metal frame 4071; the second metal grid lines 4072 may be straight lines or non-straight lines.

In some embodiments, the front projection of the first metal frame 4021 and the first metal grid lines 4025 on the display panel 2 is located in the front projection of the first insulating layer 403 on the display panel 2, that is, the first metal frame 4021 and the first metal grid lines 4025 can be electrically insulated by the first insulating layer 403, so that the first electrode layer 401 and the second electrode layer 408 are prevented from being electrically connected to cause a short circuit of the sounding unit; the front projection of the second electrode lead 4023 on the display panel 2 does not overlap with the front projection of the first insulating layer 403 on the display panel 2, and the second electrode lead 4023 needs to be electrically connected to the second metal frame 4071, so the first insulating layer 403 does not need to cover the second electrode lead 4023; meanwhile, the front projection of the electrical connection unit 4024 on the display panel 2 and the front projection of the first insulating layer 403 on the display panel 2 do not overlap, and since the second electrode lead 4023 needs to be electrically connected to the second metal frame 4071 by the electrical connection unit 4024, the first insulating layer 403 does not need to cover the electrical connection unit 4024.

The orthographic projections of the first electrode lead 4022 and the second electrode lead 4023 on the display panel 2 do not overlap with the orthographic projection of the second insulating layer 406 on the display panel 2; the orthographic projections of the second metal frame 4071 and the second metal grid lines 4072 on the display panel 2 are located in the orthographic projection of the second insulating layer 406 on the display panel 2, that is, the second metal frame 4071 and the second metal grid lines 4072 can be electrically insulated by the second insulating layer 406, so that the short circuit of the sounding unit caused by the electrical connection of the first electrode layer 401 and the second electrode layer 408 is avoided.

Wherein the first insulating layer 403 may protect the first electrode layer 401, the second insulating layer 406 may protect the second electrode layer 408, and increase the resistance to breakdown.

In some embodiments, the columnar spacer layer 404 includes a plurality of columnar spacers arranged in an array, and a sounding subunit is formed between the plurality of columnar spacers, for example, a sounding subunit is formed between every four columnar spacers, and each sounding subunit is disposed corresponding to one or more pixel units of the display panel 2. Wherein, the shape, size, interval, height and the like of the columnar spacer can be calculated by simulation to obtain suitable parameters. The columnar spacers may be made of a low-temperature organic film, such as a resin-based organic material. The process fabrication of the columnar spacers may be performed by a reticle PS process of the low temperature organic film.

Optionally, the display panel includes a color film substrate, and the color film substrate includes a black matrix; the orthographic projection of the columnar spacer on the color film substrate is positioned in the black matrix, so that the phenomenon that the transmittance of the display device is reduced due to the fact that the columnar spacer shields light can be avoided. Alternatively, the columnar spacers may be disposed at arbitrary positions.

Optionally, the orthographic projection of the columnar spacer on the display panel 2 at least partially overlaps the orthographic projection of the first metal grid line 4025 and/or the second metal grid line 4072 on the display panel 2, that is, the columnar spacer is also disposed on the black matrix of the color film substrate, so as to improve the transmittance of the display device.

In some embodiments, the display device further includes a sealant layer 405, where the sealant layer 405 is disposed between the first insulating layer 403 and the second insulating layer 406 to bond the first insulating layer 403 and the second insulating layer 406, and the bonding of the two parts of the sound generating unit is achieved through the sealant layer 405.

As shown in fig. 5a, the sealant layer 405 includes a plurality of sealant units 4051, and an air circulation channel is disposed between two adjacent sealant units 4051, and the air circulation channel may allow air to enter the vibration chamber between the columnar spacers, so as to realize sounding. Wherein, a blocking unit 4052 parallel to the frame glue unit 4051 is disposed on one side of each air circulation channel near the columnar spacer, and the width of the blocking unit 4052 is greater than the width of the air circulation channel, so as to block dust from falling into the vibration chamber.

Optionally, as shown in fig. 5b, a first extending portion 4053 is disposed at an end portion of the side of the sealant unit 4051 facing the blocking unit 4052, a second extending portion 4054 is disposed at an end portion of the side of the blocking unit 4052 facing the sealant unit 4051, two second extending portions 4054 are disposed between two first extending portions 4053 disposed on the same sealant unit 4051, and two second extending portions 4054 are disposed on different blocking units 4052; two first extending portions 4053 are arranged between two second extending portions 4052 arranged on the same blocking unit 4052, and the two first extending portions 4053 are arranged on different frame glue units 4051, so that air can successfully enter through an S-shaped channel when entering a vibration cavity through an air circulation channel, and dust can be further prevented from falling into the vibration cavity to affect the sound production effect.

In some embodiments, as shown in fig. 6, the vibration unit layer 5 includes a first polarizer 1, and the backlight surface of the display panel 2 is provided with a second polarizer 3. Wherein the first polarizer 1 includes a protective layer 301, a polarizing film 302, and a surface coating 303 formed on the second electrode layer 408 and sequentially stacked in a light emitting direction of the display panel 2, wherein a material of the protective layer 301 may include a cycloolefin polymer (CycloOlefin Polymer, COP) or a cellulose triacetate (Triacetyl Cellulose, TAC), a material of the polarizing film 302 may include a polyvinyl alcohol (polyvinyl alcohol, PVA), and a material of the surface coating 303 may include a cellulose triacetate (Triacetyl Cellulose, TAC) and a Hardening Coating (HC). The second polarizer 3 includes a second adhesive layer (PSA) 104, a second protective layer 103, a second polarizing film 102, and a second coating layer 101, which are sequentially laminated along the backlight surface of the display panel 2; the material of the second protective layer 103 may include cellulose triacetate (Triacetyl Cellulose, TAC), the material of the second polarizing film 102 may include polyvinyl alcohol (polyvinyl alcohol, PVA), and the material of the second coating layer 101 may include cellulose triacetate (Triacetyl Cellulose, TAC) and a Hard Coating (HC). The real first polaroid 1 has the functions of both polaroids and vibration, so that the first polaroid 1 with an ultrathin structure can play a good role in vibration and sounding.

In other embodiments, as shown in fig. 7, the vibration unit layer 5 includes a protective layer (PET) 409, and a third polarizer 6 is disposed between the display panel 2 and the sound generating unit 4, and the backlight surface of the display panel 2 is provided with the second polarizer 3. The third polarizer 6 includes a first adhesive layer 604, a first protective film 601, a first linear polarizing film 602, and a second protective film 603, which are disposed on the upper glass substrate 205 of the color film substrate and sequentially stacked along a light emitting direction away from the display panel 2, wherein a material of the first protective film 601 may include a cycloolefin polymer (CycloOlefin Polymer, COP) or a triacetyl cellulose (Triacetyl Cellulose, TAC), a material of the first linear polarizing film 602 may include a polyvinyl alcohol (polyvinyl alcohol, PVA), and a material of the second protective film 603 may include a triacetyl cellulose (Triacetyl Cellulose, TAC) and a Hardening Coating (HC). The second polarizer 3 includes a second adhesive layer (PSA) 104, a second protective layer 103, a second polarizing film 102, and a second coating layer 101, which are sequentially laminated along the backlight surface of the display panel 2; the material of the second protective layer 103 may include cellulose triacetate (Triacetyl Cellulose, TAC), the material of the second polarizing film 102 may include polyvinyl alcohol (polyvinyl alcohol, PVA), and the material of the second coating layer 101 may include cellulose triacetate (Triacetyl Cellulose, TAC) and a Hard Coating (HC). In the present embodiment, a protective layer (PET) 409 serves as a vibration unit of the sound generating unit 4.

The embodiment of the application also provides a manufacturing method of the display device, as shown in fig. 8, the manufacturing method includes:

step S101, providing a display panel and a vibration unit layer.

Step S102, sequentially forming a first electrode layer, a first metal layer and a first insulating layer on the light emitting side of the display panel, and sequentially forming a second electrode layer, a second metal layer and a second insulating layer on the side of the vibration unit layer, which is close to the display panel.

Step S103, forming a columnar spacer layer on the first insulating layer or the second insulating layer.

And step S104, attaching the first insulating layer and the second insulating layer to form the display device.

In this embodiment, each film structure of the sounding unit is directly fabricated on the display panel, that is, the first electrode layer, the first metal layer, the first insulating layer, the columnar spacer layer, the second insulating layer, the second metal layer and the second electrode layer of the sounding unit are directly formed on the upper glass substrate of the display panel, so that the sounding unit is integrated on the display panel, and therefore, the glass substrate formed by fabricating the 1.1T glass substrate can be saved, and the display device can be thinned; meanwhile, as each film structure of the sounding unit is directly manufactured on the display panel, gaps caused by externally hung installation cannot occur, and therefore the display device can be further thinned.

In some embodiments, the method of making further comprises at least one of:

step S201, forming a material film layer of a first electrode layer on the display panel, and forming a pattern of the first electrode layer by using a mask through a patterning process.

Step S202, forming a metal film on the first electrode layer, and forming a pattern of the first metal layer by using a mask through a patterning process.

And step 203, forming a first insulating layer material film on the first metal layer, and forming a pattern of the first insulating layer by a patterning process by using a mask.

And S204, forming a columnar spacer material film on the first insulating layer or the second insulating layer, and forming a pattern of the columnar spacer layer by a patterning process by using a mask.

In this embodiment, one or more layers of the first electrode layer, the first metal layer, the first insulating layer and the columnar spacer layer are fabricated by using LCD processing equipment on the side of the display panel, so that the precision thereof can reach 2.5 μm, and the matching with the precision of the display panel is realized. Compared with the 150-micrometer precision of the screen printing process adopted in the prior art, the precision of the film layers such as the first metal layer can be greatly improved.

In some embodiments, the display panel includes a color film substrate, and the vibration cell layer includes a first polarizer;

in step S102, a first electrode layer, a first metal layer, and a first insulating layer are sequentially formed on the light emitting side of the display panel, as shown in fig. 9a, including: and sequentially forming the first electrode layer, the first metal layer and the first insulating layer on the color film substrate. The first electrode layer, the first metal layer and the first insulating layer can be formed on the color film substrate in sequence through a patterning process by using a mask.

Alternatively, the first electrode layer, the first metal layer and the first insulating layer may be fabricated on the display panel after the alignment, which is required to be fabricated in a low temperature process (25-140 degrees celsius). Or, the first electrode layer, the first metal layer and the first insulating layer may be formed on the upper glass substrate of the color film substrate in sequence, and then the color film substrate is manufactured and the box alignment process of the display panel is performed in sequence, so that a low-temperature process is not required.

Optionally, the first electrode layer is manufactured by a magnetron sputtering process, and the resistance of the first electrode layer is 10-70 Ω. The first insulating layer may be formed by an organic film coating process or an inorganic PVX process, and a low temperature process (temperature < 120 ℃) is required since it is formed on the display Cell after the alignment of the cells. Wherein the first insulating layer can be deposited with SIN by plasma enhanced chemical vapor deposition _x Compared with the organic insulating layer with the thickness of 10 mu m manufactured by the prior screen printing process, the insulating layer only needs to be manufactured with the thickness of 6000A under the condition of ensuring the same 400V voltage breakdown resistance, thereby reducing the thickness of the insulating layer.

In step S102, a second electrode layer, a second metal layer, and a second insulating layer are sequentially formed on a side of the vibration unit layer, which is close to the display panel, as shown in fig. 9b, including: and sequentially forming the second electrode layer, the second metal layer and the second insulating layer on one side of the first polaroid, which is close to the display panel. The mask can be manufactured in a screen printing mode or a POL manufacturer coating mode, or can be formed through a patterning process by adopting the mask.

Alternatively, after each film layer of the first polarizer is manufactured, the second electrode layer, the second metal layer and the second insulating layer may be sequentially formed on a side of the first polarizer, which is close to the display panel. Alternatively, the second electrode layer, the second metal layer, and the second insulating layer may be formed by coating a film on the protective layer 301 of the first polarizer, and then may be combined with the polarizing film 302. The second insulating layer can be manufactured by adopting a thin film coating process.

Alternatively, the protective layer 301 of the first polarizer 1 may be adhered to Glass by using a Lami process through a low-temperature viscosity-reducing temperature-controlling adhesive, then a film process of the second electrode layer, the second metal layer and the second insulating layer is performed on the Glass by using an LCD device process, and finally Delami is used to remove the Glass and then is compounded with other film materials of the first polarizer 1.

In other embodiments, the light emitting side of the display panel is provided with a first polarizer, and the first polarizer includes a first adhesive layer, a first protective film, a first linear polarizing film, and a second protective film sequentially stacked along a light emitting direction away from the display panel; the vibration unit layer includes a protective layer;

in step S102, a first electrode layer, a first metal layer, and a first insulating layer are sequentially formed on the light emitting side of the display panel, as shown in fig. 10a and 10b, including: providing a second protective film, sequentially forming the first electrode layer, the first metal layer and the first insulating layer on one side of the second protective film, sequentially forming the first linear polaroid, the first protective film and the first adhesive layer on the other side of the second protective film, and attaching the first adhesive layer to the display panel.

In step S102, forming a second electrode layer, a second metal layer, and a second insulating layer on a side of the vibration unit layer, which is close to the display panel, in order, includes: and forming the second electrode layer, the second metal layer and the second insulating layer in sequence on one side of the protective layer, which is close to the display panel.

And the structure is combined with the first linear polaroid, the first protective film and the first adhesive layer in a roll-to-roll manner to prepare a special polaroid with a flexible directional sounding device structure, and finally the special polaroid is attached to a color film substrate of the display panel to prepare a final integral structure. The structure adopts the vibration sounding of the protective layer, so that the damage of the vibration of the polaroid to PVA is avoided; the roll-to-roll technology can make special POL parts (with directional sounding function) with integral structure, which is beneficial to simplifying the mass production technology.

In some embodiments, the display panel includes a color film substrate including a black matrix; the columnar spacer layer comprises a plurality of columnar spacers arranged in an array; the forming the pattern of the columnar spacer layer by a patterning process using a mask plate comprises: and forming the columnar spacer on the first insulating layer or the second insulating layer by adopting a mask plate through a patterning process, so that orthographic projection of the columnar spacer on the color film substrate is positioned in the black matrix, and therefore, the phenomenon that the transmittance of the display device is reduced due to the fact that the columnar spacer shields light can be avoided.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the present application, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present application. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present application, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform on which the embodiments of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the application, it should be apparent to one skilled in the art that embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.

While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements and/or the like which are within the spirit and principles of the embodiments are intended to be included within the scope of the present application.

Claims

1. The display device is characterized by comprising a display panel, a sounding unit arranged on the light emitting side of the display panel and a vibration unit layer arranged on one side of the sounding unit away from the display panel; the sound generating unit comprises a first electrode layer, a first metal layer, a first insulating layer, a columnar spacer layer, a second insulating layer, a second metal layer and a second electrode layer which are sequentially laminated along the light emitting direction of the display panel.

2. The display device of claim 1, wherein the display device comprises a display device,

The first metal layer comprises a first metal frame, a first electrode lead and a second electrode lead, the first metal frame is formed at the edge of the first electrode layer, the first electrode lead is formed at one end of the first electrode layer and is connected with the first metal frame, and the second electrode lead is formed at one end of the first electrode layer and is electrically insulated from the first metal frame;

3. The display device according to claim 2, further comprising an electrical connection unit provided on the second electrode lead, the second electrode lead being connected to the second metal frame through the electrical connection unit.

4. The display device according to claim 2, wherein the display panel includes a plurality of pixel units;

And/or the number of the groups of groups,

5. The display device of claim 4, wherein the display device comprises a display panel,

the orthographic projection of the first metal frame and the first metal grid line on the display panel is positioned in the orthographic projection of the first insulating layer on the display panel, and the orthographic projection of the second electrode lead on the display panel is not overlapped with the orthographic projection of the first insulating layer on the display panel;

6. The display device of claim 4, wherein the display panel comprises a color film substrate comprising a black matrix;

7. The display device of claim 1, wherein the columnar spacer layer comprises a plurality of columnar spacers arranged in an array, and a sounding sub-unit is formed between the plurality of columnar spacers, and each sounding sub-unit is arranged corresponding to one or more pixel units of the display panel.

8. The display device of claim 7, wherein the display panel comprises a color film substrate comprising a black matrix;

9. The display device according to claim 7, further comprising:

10. The display device of claim 9, wherein the display device comprises a display device,

the end part of one side of the frame glue unit facing the blocking unit is provided with a first extension part,

11. The display device according to any one of claims 1 to 10, wherein,

the vibration unit layer comprises a first polaroid, and a second polaroid is arranged on the backlight surface of the display panel;

or,

12. A method for manufacturing a display device, comprising:

Providing a display panel and a vibration unit layer;

13. The method of manufacturing of claim 12, further comprising at least one of:

14. The method of claim 13, wherein the display panel comprises a color film substrate and the vibration cell layer comprises a first polarizer;

15. The method according to claim 13, wherein a third polarizer is disposed on the light-emitting side of the display panel, and the third polarizer includes a first adhesive layer, a first protective film, a first linear polarizer, and a second protective film sequentially stacked in a light-emitting direction away from the display panel; the vibration unit layer includes a protective layer;

16. The method of claim 13, wherein the display panel comprises a color film substrate comprising a black matrix; the columnar spacer layer comprises a plurality of columnar spacers arranged in an array; the forming the pattern of the columnar spacer layer by a patterning process using a mask plate comprises: