CN114326196A

CN114326196A - Display panel and manufacturing process thereof

Info

Publication number: CN114326196A
Application number: CN202011054065.6A
Authority: CN
Inventors: 李彬
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2022-04-12
Anticipated expiration: 2040-09-29
Also published as: CN114326196B

Abstract

The application discloses a display panel and a manufacturing process thereof. The display panel comprises a liquid crystal assembly, a polarizer and a dustproof film. The polaroid is arranged on at least one side of the liquid crystal assembly, and a first light through hole penetrating through the polaroid is formed in the polaroid; at least part of the dustproof film is arranged in the first light through hole and attached to the wall surface of the first light through hole. In the above arrangement, the dustproof film can prevent foreign matters from entering and adhering to the first light passing hole during the production and manufacturing process of the display panel (for example: transferring the display panel); simultaneously, at least part of dust-proof membrane can laminate in the wall of first logical unthreaded hole to avoid the dust-proof membrane to produce too big deformation when experiencing the technology of high-pressure deaeration, and then avoid the dust-proof membrane because produce the condition that too big deformation and drop, avoid impurity foreign matter to adhere to in the first logical unthreaded hole better.

Description

Display panel and manufacturing process thereof

Technical Field

The application relates to the field of semiconductors, in particular to a display panel and a manufacturing process thereof.

Background

With the development of science and technology, electronic equipment with a comprehensive screen style is sought after by the market. More and more electronic devices adopt the technology of the camera under the screen to improve the screen occupation ratio, thereby realizing the impression of the whole screen. When the display panel of the electronic device is a liquid crystal display panel, the through light holes penetrating through the upper and lower polaroids in the liquid crystal display panel and the backlight plate are required to be formed, so that external light can penetrate through the through light holes and be captured by a camera positioned below the display panel, the collection of images is realized, and the shooting and camera shooting functions of the camera are realized.

However, in the manufacturing process of the existing display panel, foreign matters can enter the light through hole, and the foreign matters entering the light through hole are difficult to clean, and can affect the shooting and image pickup effects of the camera.

Disclosure of Invention

The application provides a display panel and a manufacturing process thereof, which can prevent foreign matters from being adhered to a first light through hole.

According to a first aspect of the present application, there is provided a display panel including:

a liquid crystal module;

the polaroid is arranged on at least one side of the liquid crystal assembly, and a first light through hole penetrating through the polaroid is formed in the polaroid;

and at least part of the dustproof film is arranged in the first light through hole and is attached to the wall surface of the first light through hole.

Optionally, the polarizer includes a lower polarizer disposed on one side of the liquid crystal module; the first light through hole comprises a first lower light through hole, and the first lower light through hole penetrates through the lower polarizer;

the display panel also comprises a backlight plate which is arranged on one side of the lower polarizer far away from the liquid crystal assembly; the backlight plate is provided with a second light through hole which penetrates through the backlight plate, and the projection of the second light through hole and the projection of the first lower light through hole on the liquid crystal assembly are overlapped;

and at least part of the dustproof film is arranged in the first lower light through hole and the second light through hole and is attached to the wall surfaces of the first lower light through hole and the second light through hole.

Optionally, the dust-proof film includes:

the main body part is attached to one side of the backlight plate, which is far away from the lower polarizer;

and the sunken part is formed by inwards sunken from the main body part, and the sunken part enters the first lower light through hole and the second light through hole.

Optionally, the second light through hole, the first lower light through hole and the liquid crystal assembly enclose an accommodating cavity;

the depressed part set up in hold the chamber, the shape of depressed part with hold the shape looks adaptation of chamber.

Optionally, the dust-proof film further comprises a tear portion;

the viscosity of tearing the portion is less than the main part with the depressed part, and, tearing the portion connect in the main part keep away from one side of depressed part.

Optionally, the number of the polarizer is two, the two polarizers are respectively an upper polarizer and a lower polarizer, and the upper polarizer and the lower polarizer are respectively arranged on two sides of the liquid crystal assembly;

the first light through hole comprises a first upper light through hole and a first lower light through hole, the first upper light through hole penetrates through the upper polarizer, and the first lower light through hole penetrates through the lower polarizer;

the dustproof film is arranged on one side, far away from the liquid crystal assembly, of the upper polarizer, and at least part of the dustproof film is arranged in the first upper light through hole and attached to the wall surface of the first upper light through hole; and/or one side of the lower polarizer, which is far away from the liquid crystal assembly, is provided with the dustproof film, and at least part of the dustproof film is arranged in the first lower light through hole and is attached to the wall surface of the first lower light through hole.

According to a second aspect of the present application, there is provided a manufacturing process of a display panel, the manufacturing process including:

providing a liquid crystal assembly;

a polaroid is arranged on at least one side of the liquid crystal assembly, and a first light through hole penetrating through the polaroid is formed in the polaroid;

and arranging a dustproof film on one side of the polaroid, which is far away from the liquid crystal assembly, wherein at least part of the dustproof film enters the first light through hole and is attached to the wall surface of the first light through hole.

Optionally, the number of the polarizers is two, and the two polarizers are an upper polarizer and a lower polarizer respectively; the first light through hole comprises a first upper light through hole and a first lower light through hole, the first upper light through hole penetrates through the upper polarizer, and the first lower light through hole penetrates through the lower polarizer;

set up the polaroid on at least one side of liquid crystal assembly includes: an upper polarizer and a lower polarizer are respectively arranged on two sides of the liquid crystal assembly, wherein the projections of the first upper light through hole and the first lower light through hole on the liquid crystal assembly are overlapped;

the one side of keeping away from of polaroid the liquid crystal module sets up the dust mask, includes: and arranging a dustproof film on one side of the upper polarizer and/or the lower polarizer, which is far away from the liquid crystal assembly.

Optionally, the manufacturing process further includes:

removing the dustproof film arranged on the upper polaroid;

and a glass cover plate is arranged on one side of the upper polaroid, which is far away from the lower polaroid, and the glass cover plate covers the first upper light through hole.

Optionally, the manufacturing process further includes:

removing the dustproof film arranged on the lower polarizer;

arranging a backlight plate on one side of the lower polaroid, which is far away from the upper polaroid, wherein the backlight plate covers the first lower light through hole; the backlight plate is provided with a second light through hole which penetrates through the backlight plate, and the projection of the second light through hole and the projection of the first lower light through hole on the liquid crystal assembly are overlapped;

and a dustproof film is arranged on one side of the backlight plate, which is far away from the lower polarizer, and at least part of the dustproof film is arranged on the second light through hole and the first light through hole and is attached to the wall surfaces of the second light through hole and the first light through hole.

Optionally, the disposing a dust-proof film on a side of the polarizer away from the liquid crystal module includes:

and performing blow molding on one side of the dustproof film, which is far away from the liquid crystal assembly, so that at least part of the dustproof film enters the first light through hole and is attached to the wall surface of the first light through hole.

According to a third aspect of the present application, there is provided a manufacturing process of a display panel, the manufacturing process including:

providing a backlight plate, wherein a second light through hole penetrating through the backlight plate is formed in the backlight plate;

a liquid crystal display module is arranged on one side of the backlight plate and comprises a liquid crystal assembly and a lower polarizer, a first lower light through hole which penetrates through the lower polarizer is formed in the lower polarizer, and the projections of the first lower light through hole and the second light through hole on the liquid crystal assembly are overlapped; the second light through hole, the first lower light through hole and the liquid crystal assembly form an accommodating cavity in an enclosing mode;

the backlight plate is provided with a dustproof film on one side far away from the display panel, and at least part of the dustproof film is arranged in the accommodating cavity and attached to the wall surface of the accommodating cavity.

Optionally, the dustproof film includes a recessed portion disposed in the accommodating cavity, and the shape of the recessed portion is matched with the shape of the accommodating cavity.

Optionally, the disposing a dust-proof film on a side of the backlight plate away from the display panel includes:

and carrying out blow molding on one side of the dustproof film, which is far away from the backlight plate, so that at least part of the dustproof film enters the accommodating cavity and is attached to the wall surface of the accommodating cavity.

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

in the above arrangement, the dustproof film can prevent foreign matters from entering and adhering to the first light passing hole during the production and manufacturing process of the display panel (for example: transferring the display panel); simultaneously, at least part of dust-proof membrane can laminate in the wall of first logical unthreaded hole to avoid the dust-proof membrane to produce too big deformation when experiencing the technology of high-pressure deaeration, and then avoid the dust-proof membrane because produce the condition that too big deformation and drop, avoid impurity foreign matter to adhere to in the first logical unthreaded hole better. When setting up the camera in above-mentioned display panel's below, can guarantee that external light gets into display panel's logical light channel's cleanliness factor to promote the photography of camera, the effect of making a video recording.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic plan structure diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the present application.

Fig. 3 is a schematic cross-sectional view of a display panel.

Fig. 4 is a schematic plan view of a dustproof film.

Fig. 5 is a schematic cross-sectional view illustrating a liquid crystal display module according to an embodiment of the present disclosure.

Fig. 6 is a schematic cross-sectional view illustrating another liquid crystal display module according to an embodiment of the present disclosure.

Fig. 7 is a schematic cross-sectional view illustrating a partial structure of a display panel according to an embodiment of the present disclosure.

Fig. 8 is a schematic cross-sectional view illustrating another structure of a display panel according to an embodiment of the present disclosure.

Fig. 9 is a simplified flowchart illustrating a manufacturing process of a display panel according to an embodiment of the present application.

Fig. 10 is a simplified flowchart illustrating a manufacturing process of a display panel according to another embodiment of the present application.

Description of the reference numerals

Electronic device 10

Display panel 20

Light passing channel 21

Camera 30

Glass cover plate 100

Liquid crystal display module 200

Liquid crystal assembly 210

Upper electrode 211

Liquid crystal layer 212

Liquid crystal molecules 2121

Lower electrode 213

Control layer 214

Control chip 2141

Flexible circuit board 2142

Polarizer 220

Upper polarizer 221

First upper light-passing hole 2211

Lower polarizer 222

First lower light through hole 2221

Accommodating chamber 230

Backlight plate 300

Second light passing hole 310

Dust-proof film 400

Air vent 401

Gap 402

Main body part 410

Concave part 420

Tear-off portion 430

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The manner in which the following exemplary embodiments are described does not represent all manner of consistency with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

As shown in fig. 1, the present application discloses an electronic device 10, and the electronic device 10 may include a display panel 20 for display. In this embodiment, the electronic device 10 may be a mobile phone. Of course, in other embodiments, the electronic device 10 may also be other devices with a display panel 20, such as: computers, tablets, electronic books, watches with smart display capabilities, and the like. Meanwhile, in the present embodiment, the display panel 20 may be a flexible display panel 20, and of course, in other embodiments, the display panel 20 may also be a display panel 20 that is not deformable.

The electronic device 10 may further include a front-end working device, which may be disposed below the display panel 20. The working means may comprise at least one of the following: camera 30, sensor, earphone. In this embodiment, the working device may include a camera 30. The term "front-facing" does not require that a portion of the working device be physically mounted or exposed on the user-proximate side of the display panel 20; as long as it is provided to the electronic apparatus 10, and its use depends on the side of the display panel 20 close to the user, it can be understood as "a front working device".

In order to realize a full screen and increase the screen occupation ratio of the electronic device 10, a front-end working device needs to be disposed below the display panel 20. In the present embodiment, the camera 30 is disposed below the display panel 20. In order to ensure that the camera 30 can perform normal photographing and shooting functions, a light-passing channel needs to be reserved in the display panel 20, the camera 30 can be disposed on a side of the light-passing channel away from the user, or the camera 30 can be directly disposed in the light-passing channel, so that external light can pass through the light-passing channel and be captured by the camera 30.

As shown in fig. 2, and with reference to fig. 1 as necessary. The display panel 20 may include a glass cover 100, a liquid crystal display module 200, and a backlight 300 stacked in sequence along a vertical direction H.

The glass cover 100 can support and protect the lcd module 200 and the backlight 300 located at a side of the glass cover away from the user, and can prevent foreign impurities from entering the lcd module 200 and the backlight 300.

The liquid crystal display module 200 may include a liquid crystal cell 210 and a polarizer 220. The liquid crystal assembly 210 includes an upper electrode 211, a liquid crystal layer 212, a lower electrode 213, and a control layer 214. The liquid crystal layer 212 includes a plurality of liquid crystal molecules 2121. The upper electrode 211 and the lower electrode 213 are respectively disposed at two sides of the liquid crystal layer 212, and the electric field around the liquid crystal layer 212 is changed by changing the potential difference between the upper electrode 211 and the lower electrode 213, so as to change the arrangement of the liquid crystal molecules 2121, thereby controlling the light projection rate of the liquid crystal module 210. In the embodiment, the control layer 214 includes a control chip 2141 and a flexible circuit board 2142, and the control layer 214 is electrically connected to the lower electrode 213 to change the voltage of the lower electrode 213, thereby changing the potential difference between the upper electrode 211 and the lower electrode 213 and controlling the arrangement of the liquid crystal molecules 2121. Note that the upper electrode 211 and the lower electrode 213 are made of a transparent material.

The polarizer 220 is disposed on at least one side of the liquid crystal module 210 for selectively filtering light. In order to allow the camera 30 located below the display panel 20 to capture external light, a first light hole needs to be formed in the polarizer 220. The first light passing hole serves as at least a part of the light passing channel 21. In the present embodiment, the number of the polarizers 220 is two, and the two polarizers are the upper polarizer 221 and the lower polarizer 222. The upper polarizer 221 and the lower polarizer 222 are respectively disposed on two sides of the liquid crystal module 210, and the upper polarizer 221 is closer to the glass cover 100 than the lower polarizer 222. The first light passing holes include a first upper light passing hole 2211 and a first lower light passing hole 2221. The first upper light passing hole 2211 passes through the upper polarizer 221, and the first lower light passing hole 2221 passes through the lower polarizer 222. The projections of the first lower light-passing hole 2221 and the first upper light-passing hole 2211 on the liquid crystal assembly 210 are overlapped, so that the external light can sequentially pass through the first upper light-passing hole 2211 and the first lower light-passing hole 2221 and be captured by the camera 30. Through the arrangement, the light inlet quantity can be ensured, so that the shooting and image pickup effects of the camera are ensured. In the present embodiment, the first lower light passing hole 2221 and the first upper light passing hole 2211 together constitute at least a part of the light passing channel 21.

The backlight 300 is used as a light source of the display panel 20 and disposed on a side of the lower polarizer 222 away from the liquid crystal device 210. When the backlight 300 emits light, the liquid crystal module 210 and the polarizer 220 cooperate with each other, so that the display panel 20 obtains a final display pattern. In order to allow the camera 30 located below the display panel 20 to capture external light, the backlight 300 needs to be provided with a second light passing hole 310. The projections of the second light passing hole 310, the first lower light passing hole 2221 and the first upper light passing hole 2211 on the liquid crystal assembly 210 are overlapped, so that the external light can sequentially pass through the first upper light passing hole 2211, the first lower light passing hole 2221 and the second light passing hole 310, and is finally captured by the camera 30. The first upper light-passing hole 2211 and the first lower light-passing hole 2221 together constitute the light-passing channel 21 described above.

In the manufacturing process of the display panel 20, a plurality of stations are required to be processed. First, the liquid crystal module 210 is manufactured. Then, the liquid crystal module 210 is transferred, and the upper polarizer 221 and the lower polarizer 222 are respectively mounted on both sides of the liquid crystal module 210. At this time, the liquid crystal module 210, the upper polarizer 221 and the lower polarizer 222 are connected to form the liquid crystal display module 200 (refer to fig. 5). After that, the liquid crystal display module 200 is transferred again, and the glass cover plate 100 is fixed on the side of the upper polarizer 221 away from the liquid crystal assembly 210 (refer to fig. 7). Then, the liquid crystal display module 200 and the glass cover 100 are transferred again to form an integrated body, and the backlight 300 (refer to fig. 2) is fixed to the side of the lower polarizer 222 away from the liquid crystal assembly 210. Finally, the manufactured display panel 20 needs to be transferred again and assembled with components such as the device case and the camera 30 to form the electronic device 10 (see fig. 1). Of course, in other embodiments, after obtaining the liquid crystal display module 200, the liquid crystal display module 200 may be transferred first, and the liquid crystal display module 200 is connected to the backlight 300. Then, the whole of the backlight 300 and the liquid crystal display module 200 is transferred again, and the above-mentioned whole structure is connected to the glass cover 100, and finally the display panel 20 shown in fig. 2 is obtained.

However, in the manufacturing process of the display panel 20 and the process of transferring the display panel 20, the liquid crystal display module 200 undergoes at least two station transfers. In this process, the light holes (the first upper light hole 2211 and the first lower light hole 2221) of the polarizer 220 (the upper polarizer 221 and the lower polarizer 222) in the lcd module 200 are exposed to the outside air, and foreign matters from the outside may enter the light holes (the first upper light hole 2211 and the first lower light hole 2221). In other words, foreign matter is very likely to adhere to the light passage 21. When the display panel 20 and the camera 30 are fixedly connected, the camera 30 faces the light passing channel 21, or the camera 30 is located in the light passing channel 21. At this time, the foreign matters in the light passing channel 21 may seriously affect the photographing and image capturing effects of the camera 30, thereby affecting the yield of the electronic device 10.

As shown in fig. 3, and with reference to fig. 1 as necessary. In order to prevent foreign substances from adhering to the light transmission channel 21, the first lower light transmission hole 222 and the second light transmission hole 310 are covered with the dustproof film 400, and the plane on which the dustproof film 400 is located is parallel to the plane on which the liquid crystal module 210 is located. However, such an arrangement would result in a large gap 402 between the dustproof film 400 and the liquid crystal module 210. In the process of connecting the liquid crystal module 210, the upper polarizer 221 and the lower polarizer 222 to form the liquid crystal display module 200, a high-pressure defoaming process is required, so that the upper polarizer 221 and the lower polarizer 222 can be tightly connected to the liquid crystal module 210 to form the liquid crystal display module 200. Meanwhile, in the process of connecting the upper polarizer 221 and the glass cover plate 100 and in the process of connecting the lower polarizer 222 and the backlight plate 300, a high-pressure defoaming process is also required, so that the upper polarizer 221 and the glass cover plate 100, and the lower polarizer 222 and the backlight plate 300 can be tightly connected. In the high-pressure defoaming process, the ambient pressure becomes large. Since there is a gap 402 between the dustproof film 400 and the liquid crystal module 210, the pressure in the gap 402 is still the initial pressure. At this time, the environmental pressure is much greater than the pressure in the gap between the dustproof film 400 and the liquid crystal assembly 210, that is, the pressure on one side of the dustproof film 400 is much greater than the pressure on the other side, so that the dustproof film 400 is greatly plastically deformed by the pressure difference. When the anti-dust film 400 is largely deformed, its adhesiveness is greatly reduced, or even loses adhesiveness. In order to solve the above problem, in one design, as shown in fig. 3 and 4, a small vent hole 401 is formed in the dust-proof film 400. The vent 401 communicates with the outside and the gap 402, so that the air pressure inside and outside the dustproof film 400 can be kept balanced, and the dustproof film 400 is prevented from being deformed greatly. However, foreign matters enter the light-transmitting channel 21 through the air vent 401, and affect the photographing and image-capturing effects of the camera 30, and ultimately affect the yield of the electronic device 10.

As shown in fig. 2, in the present embodiment, the display panel 20 may also include a dust-proof film 400. At least a part of the dustproof film 400 is disposed in the first light passing hole and attached to a wall surface of the first light passing hole.

In the above arrangement, the dustproof film 400 can prevent foreign matters from entering and adhering to the first light passing holes during the manufacturing process (e.g., transferring the display panel 20) of the display panel 20. Meanwhile, at least part of the dustproof film 400 can be attached to the wall surface of the first light through hole, and an overlarge gap between the dustproof film 400 and the first light through hole and between the dustproof film and the liquid crystal module 210 is reduced or avoided, so that overlarge deformation generated when the display panel 20 undergoes a high-pressure defoaming process is avoided, the situation that the dustproof film 400 loses viscosity due to overlarge deformation or even drops is avoided, and foreign matters such as impurities are better prevented from being adhered to the first light through hole. When the camera 30 is disposed below the display panel 20, the cleanliness of the light passage 21 of the display panel 20 for the external light to enter is ensured, so that the photographing and shooting effects of the camera 30 are improved.

As shown in fig. 5 and optionally referring to fig. 1, in the process of manufacturing the display panel 20 in the present embodiment, after the liquid crystal display module 200 is manufactured, the dust-proof films 400 are required to be disposed on the sides of the upper polarizer 221 and the lower polarizer 222 away from the liquid crystal assembly 210. The dustproof film 400 attached to the side of the upper polarizer 221 away from the liquid crystal assembly 210 is at least partially disposed in the first upper light-passing hole 2211 and attached to the wall surface of the first upper light-passing hole 2211. The dustproof film 400 attached to the side of the lower polarizer 222 away from the liquid crystal module 210 is at least partially disposed in the first lower light hole 2221 and attached to the wall surface of the first lower light hole 2221. Through the above arrangement, when the liquid crystal display module 200 is transferred, foreign impurities from the outside can be prevented from entering the light passing channel 21. Meanwhile, the situation that the dustproof film 400 loses viscosity and even the dustproof film 400 falls off when the dustproof film 400 is subjected to a high-pressure defoaming process and the dustproof film 400 is subjected to overlarge plastic deformation can be avoided. Of course, in other embodiments, the dust-proof film 400 may be disposed only on the upper polarizer 221 or only on the lower polarizer 222.

Optionally, the dustproof film 400 attached to the upper polarizer 221 is closely attached to the first upper light-passing hole 2211 and the end surface of the liquid crystal module 210 away from the lower electrode 213, in other words, there is no gap between the dustproof film 400 and the wall surface of the first upper light-passing hole 2211 and the end surface of the liquid crystal module 210. The dustproof film 400 attached to the lower polarizer 222 is closely attached to the first lower light-passing hole 2221 and the end surface of the liquid crystal module 210 away from the upper electrode 211, in other words, no gap exists between the dustproof film 400 and the wall surface of the first lower light-passing hole 2221 and the end surface of the liquid crystal module 210. Through the above setting, can avoid the pellicle 400 to appear deformation to guaranteed the stickness of pellicle 400, avoided the pellicle 400 phenomenon that drops to appear, and then avoided external impurity foreign matter to enter into logical light passageway 21, promoted camera 30's photography, the effect of making a video recording, simultaneously, promoted electronic equipment 10's acceptance rate.

As shown in fig. 2, when the glass cover 100, the liquid crystal display module 200 and the backlight 300 are connected to form the display panel 20, that is, when the display panel 20 is manufactured, at least a portion of the dustproof film 400 is disposed in the first lower light through hole 2221 and the second light through hole 310 and attached to the wall surfaces of the first lower light through hole 2221 and the second light through hole 310. With the above arrangement, the dustproof film 400 can prevent foreign matters from entering and adhering to the light-transmitting channel during the process of transferring the display panel 20. Meanwhile, at least part of the dustproof film 400 can be attached to the wall surface of the first lower light through hole 2221, and an overlarge gap is reduced or avoided between the dustproof film 400 and the wall surface of the first lower light through hole 2221 and between the end surfaces of the liquid crystal modules 210, so that overlarge deformation of the display panel 20 during a high-pressure defoaming process is avoided, the situation that the dustproof film 400 falls off due to the overlarge deformation is avoided, and foreign matters are better prevented from being adhered to the light through channel. When the camera 30 is disposed below the display panel 20, the cleanliness of the light passage 21 of the display panel 20 for the external light to enter is ensured, so that the photographing and shooting effects of the camera 30 are improved.

Alternatively, the dust-proof film 400 may include a main body portion 410, a recessed portion 420, and a tear portion 430.

The main body 410 is attached to a side of the backlight 300 away from the lower polarizer 222. A recess 420 is formed recessed inward from the body portion 410, and the recess 420 enters the first lower light passing hole 2221 and the second light passing hole 310. Through the above arrangement, the contact area between the dustproof film 400 and the backlight plate 300 is increased, so that the dustproof film 400 and the backlight plate 300 are connected tightly, and foreign matters are prevented from entering the light passage 21. Meanwhile, due to the presence of the body portion 410, the boundary of the dustproof film 400 is away from the light passing channel 21, thereby preventing foreign substances from entering the light passing channel 21 due to the adhesion of foreign substances to the boundary of the dustproof film 400.

The second light passing hole 310, the first lower light passing hole 2221 and the end surface 215 of the liquid crystal assembly 210 close to the lower polarizer 222 enclose a receiving cavity 230. The recess 420 is disposed in the accommodating cavity 230, and the shape of the recess 420 is matched with the shape of the accommodating cavity 230. Through the above arrangement, when the recess 420 is bonded to the wall surface of the accommodating chamber 230, it can be ensured that no gap exists between the recess 420 and the wall surface of the accommodating chamber 230, thereby preventing the recess from being deformed when undergoing a high-pressure defoaming process, and further ensuring the connection stability between the dustproof film 400 and the backlight plate 300.

The tearing portion 430 has a smaller viscosity than the main body portion 410 and the recess portion 420, and the tearing portion 430 is connected to a side of the main body portion 410 away from the recess portion 420. By providing the tearing portion 430, a user can hold the tearing portion 430 and apply a force to the tearing portion 430 to be away from the liquid crystal assembly 210, so that the main body portion 410 and the recess portion 420 can be pulled by the tearing portion 430 to be away from the backlight 300 and expose the light-passing channel 21, so as to fixedly connect the display panel 20 and the camera. Through the arrangement, the operation of removing the tearing part 430 is more convenient.

As shown in fig. 9, and with reference to fig. 2 as necessary. The application also discloses a manufacturing process of the display panel 20, and the display panel 20 can be manufactured by the manufacturing process. The manufacturing process comprises the following steps:

step 1001: a liquid crystal assembly 210 is provided.

Step 2001: the polarizer 220 is disposed on at least one side of the liquid crystal module 210, and the polarizer 220 is provided with a first light hole penetrating therethrough.

Step 3001: the dustproof film 400 is disposed on a side of the polarizer 220 away from the liquid crystal module 210, and at least a portion of the dustproof film 400 enters the first light passing hole and is attached to a wall surface of the first light passing hole.

In the present embodiment, the number of the polarizers 220 is two, and the two polarizers are the upper polarizer 221 and the lower polarizer 222. An upper polarizer 221 and a lower polarizer 222 are disposed on both sides of the liquid crystal module 210, respectively. The first light passing holes include a first upper light passing hole 2211 and a first lower light passing hole 2221. The first upper light passing hole 2211 passes through the upper polarizer 221, and the first lower light passing hole 2221 passes through the lower polarizer 222. Also, the projections of the first lower light passing hole 2221 and the second light passing hole 310 on the liquid crystal module 210 overlap.

Then, step 2001: the polarizer 220 is disposed on at least one side of the liquid crystal module 210, and specifically includes: the upper polarizer 221 and the lower polarizer 222 are respectively disposed on two sides of the liquid crystal module 210, and the projections of the first upper light-passing hole 2211, the first lower light-passing hole 2221 and the second light-passing hole 310 on the liquid crystal module 210 are overlapped.

Meanwhile, step 3000: the dust-proof film 400 is disposed on a side of the polarizer 220 away from the liquid crystal module 210, and specifically includes: the dustproof film 400 is disposed on the sides of the upper polarizer 221 and the lower polarizer 222 away from the liquid crystal assembly 210. The dustproof film 400 on the upper polarizer 221 enters the first upper light passing hole 2211, and the dustproof film 400 on the lower polarizer 222 enters the first lower light passing hole 2221. At this time, the cross-sectional structure of the liquid crystal display module 200 is shown in fig. 5.

With the above arrangement, when the liquid crystal display module 200 shown in fig. 5 is transferred, foreign matters can be prevented from entering the first upper light through hole 2211 and/or the first lower light through hole 2221, so that the cleanliness of the light through channel 21 is ensured. Of course, in other embodiments, the dustproof film 400 may be disposed only on the upper polarizer 221 or the lower polarizer 222.

Optionally, step 3001: the disposing of the dust-proof film 400 on the side of the polarizer 220 away from the liquid crystal module 210 may further include: the side of the dustproof film 400 away from the liquid crystal module 210 is subjected to a blow molding process, so that the dustproof film 400 at least partially enters the first light through hole and is attached to the wall surface of the first light through hole.

In this embodiment, the anti-dust film 400 on the upper polarizer 221 is tightly attached to the first upper light-passing hole 2211 and the wall surface of the liquid crystal module 210, and the anti-dust film 400 on the lower polarizer 222 is tightly attached to the first lower light-passing hole 2221 and the wall surface of the liquid crystal module 210 by the blow molding process.

Optionally, the manufacturing process may further include the steps of:

step 4001: the dustproof film 400 disposed on the upper polarizer 221 is removed and the first upper light passing hole 2211 is exposed. At this time, the cross-sectional structure of the liquid crystal display module 200 is shown in fig. 6.

Step 5001: the glass cover plate 100 is disposed on a side of the upper polarizer 221 away from the lower polarizer 222, and the glass cover plate 100 covers the first upper light passing hole 2211. At this time, the cross-sectional structure of the display panel 20 is as shown in fig. 7.

The steps of disposing the upper polarizer 221 and the lower polarizer 222 on two sides of the liquid crystal module 210 are performed at the same station, and the step of disposing the glass cover plate 100 on the side of the upper polarizer 221 away from the lower polarizer 222 is performed at another station. In the process of switching the stations, the liquid crystal display module 200 formed by the upper polarizer 221, the liquid crystal module 210 and the lower polarizer 222 needs to be transferred. In this process, the liquid crystal display module 200 directly contacts with the outside, and foreign impurities from the outside can directly contact with the liquid crystal display module 200. At this time, the dustproof film 400 attached to the upper polarizer 221 and the dustproof film 400 attached to the lower polarizer 222 can prevent foreign impurities from entering the first light passing hole. Meanwhile, since the glass cover plate 100 needs to be directly attached to the upper polarizer 221, in step 5000: before the glass cover 100 is disposed on the side of the upper polarizer 221 away from the lower polarizer 222, a step of removing the anti-dust film 400 on the upper polarizer 221 is required.

Optionally, the manufacturing process may further include the steps of:

step 6001: the dustproof film 400 disposed on the lower polarizer 222 is removed and the first lower light passing hole 2221 is exposed. At this time, the cross-sectional structure of the display panel 20 is as shown in fig. 8.

Step 7001: a backlight plate 300 is disposed on a side of the lower polarizer 222 away from the upper polarizer 221, and the backlight plate 300 covers the first lower light passing hole 2221. The backlight 300 is provided with a second light passing hole 310, and the projections of the second light passing hole 310, the first lower light passing hole 2221 and the second upper light passing hole 2211 on the liquid crystal module 210 are overlapped, so as to ensure the amount of light entering.

Step 8001: the backlight 300 is provided with a dust-proof film 400 on a side thereof away from the lower polarizer 222, and at least a portion of the dust-proof film 400 is disposed on the second light passing hole 310 and the first lower light passing hole 2221 and attached to wall surfaces of the second light passing hole 310 and the first lower light passing hole 2221. At this time, the cross-sectional structure of the display panel 20 is as shown in fig. 2.

The steps of disposing the glass cover 100 on the upper polarizer 221 and disposing the backlight 300 on the lower polarizer 222 are performed at different stations. In the process of switching the stations, the whole structure formed by connecting the glass cover plate 100 and the liquid crystal display module 200 needs to be transferred. In this process, the whole structure formed by connecting the glass cover plate 100 and the liquid crystal display module 200 is directly contacted with the outside, and foreign impurities from the outside can be directly contacted with the whole structure formed by connecting the glass cover plate 100 and the liquid crystal display module 200. At this time, the dustproof film 400 attached to the lower polarizer 222 can prevent foreign impurities from entering the first lower light passing hole 2221. Meanwhile, since the backlight 300 needs to be directly attached to the lower polarizer 222, in step 7001: before the backlight 300 is disposed on the side of the lower polarizer 222 away from the upper polarizer 221, a step of removing the dust-proof film 400 on the lower polarizer 222 is required. Finally, the dustproof film 400 is still required to be disposed on the side of the backlight 300 away from the lower polarizer 222, so as to prevent foreign matters from adhering to the accommodating cavity 230 and contaminating the light passing channel 21 during the process of transferring the display panel 20.

In other embodiments, step 6001 to step 8001 may be performed first, and then step 4001 and step 5001 may be performed.

As shown in fig. 1 and 2, when the electronic device 10, particularly the display panel 20 and the camera 30, needs to be assembled after the display panel 20 is manufactured, the dust-proof film 400 provided on the backlight 300 needs to be removed.

As shown in fig. 10, it is necessary to refer to fig. 2, if the lcd module 200 is a directly accessible component, the manufacturing process of the display panel 20 includes the following steps:

step 1002: a backlight plate 300 is provided, and a second light passing hole 310 is formed on the backlight plate 300.

Step 2002: the liquid crystal display module 200 is disposed on one side of the backlight 300.

The liquid crystal display module 200 includes a liquid crystal module 210 and a lower polarizer 222, and the lower polarizer 222 has a first lower light hole 2221. The projections of the first lower light passing hole 2221 and the second light passing hole 310 on the liquid crystal module 210 overlap. The second light passing hole 310, the first lower light passing hole 2221 and the liquid crystal assembly 210 enclose a receiving cavity 230. At this time, the cross-sectional structure of the display panel 20 is as shown in fig. 8.

Step 3002: the dust-proof film 400 is provided on the side of the backlight 300 remote from the display panel 20. At least part of the dustproof film 400 is disposed in the accommodating cavity 230 and attached to the wall surface of the accommodating cavity 230. At this time, the cross-sectional structure of the display panel 20 is as shown in fig. 2.

In this embodiment, the dustproof film 400 includes a recessed portion 420 disposed in the accommodating cavity 230, and the shape of the recessed portion 420 is adapted to the shape of the accommodating cavity 230, so that the dustproof film 400 can better fit to the accommodating cavity 230.

Through the above arrangement, the process of transferring the display panel 20 can be avoided, the foreign matters outside are adhered to the accommodating cavity 230 and pollute the light passing channel 21, so that the shooting and camera shooting functions of the camera are improved. Meanwhile, when the electronic device is manufactured by using the display panel 20, the yield of the electronic device can be improved.

Wherein, step 3002: the dust-proof film 400 is disposed on a side of the backlight 300 away from the display panel 20, and specifically includes: blow molding is performed on the side of the dustproof film 400 far away from the backlight plate 300, so that the dustproof film 400 at least partially enters the accommodating cavity 230 and is attached to the wall surface of the accommodating cavity 230.

In this embodiment, through blow molding's technology for the dust proof membrane 400 with hold the chamber 230 and closely laminate, thereby avoid the dust proof membrane 400 to produce deformation when experiencing high-pressure deaeration technology, guaranteed the stickness of dust proof membrane 400, and then avoid during external impurity foreign matter gets into and holds the chamber 230.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A display panel, comprising:

a liquid crystal module;

2. The display panel of claim 1, wherein the polarizer comprises a lower polarizer disposed on one side of the liquid crystal element; the first light through hole comprises a first lower light through hole, and the first lower light through hole penetrates through the lower polarizer;

3. The display panel according to claim 2, wherein the dust-proof film comprises:

4. The display panel of claim 3, wherein the second light hole, the first light hole and the liquid crystal assembly enclose a receiving cavity;

5. The display panel according to claim 3, wherein the dust-proof film further comprises a tear portion;

6. The display panel according to claim 1, wherein the number of the polarizers is two, and the two polarizers are an upper polarizer and a lower polarizer, and the upper polarizer and the lower polarizer are respectively disposed on two sides of the liquid crystal module;

7. A manufacturing process of a display panel is characterized by comprising the following steps:

providing a liquid crystal assembly;

8. The manufacturing process of claim 7, wherein the number of the polarizers is two, namely an upper polarizer and a lower polarizer; the first light through hole comprises a first upper light through hole and a first lower light through hole, the first upper light through hole penetrates through the upper polarizer, and the first lower light through hole penetrates through the lower polarizer;

9. The manufacturing process of claim 8, further comprising:

removing the dustproof film arranged on the upper polaroid;

10. The manufacturing process of claim 8, further comprising:

removing the dustproof film arranged on the lower polarizer;

11. The manufacturing process of claim 7, wherein the disposing of the dustproof film on the side of the polarizer away from the liquid crystal module comprises:

12. A manufacturing process of a display panel is characterized by comprising the following steps:

13. The manufacturing process of claim 12, wherein the dustproof film comprises a recessed portion disposed in the accommodating cavity, and the shape of the recessed portion is adapted to the shape of the accommodating cavity.

14. The manufacturing process of claim 12, wherein the disposing a dust-proof film on a side of the backlight plate away from the display panel comprises: