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CN110133787B - Polaroid, display module and mobile terminal - Google Patents

Polaroid, display module and mobile terminal Download PDF

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Publication number
CN110133787B
CN110133787B CN201910435473.7A CN201910435473A CN110133787B CN 110133787 B CN110133787 B CN 110133787B CN 201910435473 A CN201910435473 A CN 201910435473A CN 110133787 B CN110133787 B CN 110133787B
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China
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layer
light
display module
height
wave plate
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CN110133787A (en
Inventor
刘敏
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN201910435473.7A priority Critical patent/CN110133787B/en
Publication of CN110133787A publication Critical patent/CN110133787A/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3025Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/30Polarising elements
    • G02B5/3083Birefringent or phase retarding elements

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

The application provides a polaroid, which is adapted to a display screen, wherein the display screen comprises a light-transmitting area and a display area surrounding the light-transmitting area, the polaroid is used for covering the light-transmitting area and the display area, the polaroid comprises a first laminated part and a second laminated part, the first laminated part is used for covering the light-transmitting area, and the first laminated part has a first height; the second laminated part is used for covering the display area and has a second height, wherein the first height is smaller than the second height, and the light transmittance of the first laminated part is larger than that of the second laminated part. The utility model provides a polaroid is through setting up the convenient encapsulating of the mode that highly is less than the height of second lamination portion of first lamination portion and first lamination portion, can improve the light inlet volume of camera, is favorable to improving the quality of making a video recording. The application also provides a display module and a mobile terminal.

Description

Polaroid, display module and mobile terminal
Technical Field
The application relates to the field of electronic equipment, in particular to a polaroid, a display module and a mobile terminal.
Background
Along with the development of the comprehensive screen technology of the mobile phone, the current development direction is inclined to the situation that a front-facing camera is arranged under a screen for integration, and complicated mechanism designs such as a lifting camera can be omitted. The camera is integrated under the screen, needs the screen trompil for improve the light inlet quantity of camera, improve the quality of making a video recording. The scheme that the holes are divided into the through holes and the blind holes is that the through holes need to open all the holes of the auxiliary film materials of the screen, such as a polaroid, and the camera directly props against the cover plate glass. The blind hole is not opened on the screen, and the auxiliary film material such as a polaroid is opened. But the mode that the through-hole was opened to the polaroid in the blind hole scheme makes display module's light transmissivity not good, influences the quality of making a video recording.
Disclosure of Invention
The embodiment of the application provides a polaroid, a display module and a mobile terminal, and solves the problems that the light incoming amount of a camera is low and the camera shooting quality is not high.
The present application achieves the above object by the following means.
In a first aspect, the present application provides a polarizer, which is adapted to a display screen, the display screen includes a transparent area and a display area surrounding the transparent area, the polarizer is used for covering the transparent area and the display area, the polarizer includes a first lamination portion and a second lamination portion, the first lamination portion is used for covering the transparent area, the first lamination portion has a first height, the second lamination portion is used for covering the display area, the second lamination portion has a second height, wherein the first height is smaller than the second height, and the light transmittance of the first lamination portion is greater than the light transmittance of the second lamination portion.
In one embodiment, the first stack portion includes a first waveplate layer for attaching to the light-transmissive region; the second laminated part comprises a second wave plate layer and a polarization layer, and the second wave plate layer is used for being attached to the display area.
In one embodiment, the second wave plate layer and the first wave plate layer are of an integral structure, and the second wave plate layer and the first wave plate layer are the same in height.
In one embodiment, the first laminated part further includes a functional layer, and the functional layer and the first wave plate layer are stacked, and the functional layer has a light transmittance greater than that of the polarizing layer.
In one embodiment, the polarizing layer includes a first protective layer, a polarizing layer and a second protective layer, which are stacked, the second protective layer directly covers the second wave plate layer, and the second protective layer and the functional layer are an integrated structure.
In one embodiment, the polarizing layer includes a first protective layer, a polarizing layer and a second protective layer stacked in layers, the second protective layer directly covers the second wave plate layer, and the first protective layer and the functional layer are made of the same material.
In one embodiment, the difference between the first height and the second height is greater than 20 microns and less than 40 microns.
In a second aspect, the application provides a display module, including the polaroid and the display screen that the first aspect provided, the display screen includes the printing opacity region with the through-hole looks adaptation of camera and the display area of surrounding printing opacity region, and the first laminating of polaroid covers in printing opacity region, and the second laminating covers in the display area.
In one embodiment, the display module further includes a cover plate layer and an optical adhesive layer, and the optical adhesive layer is filled between the cover plate layer and the polarizer.
In one embodiment, the optical adhesive layer includes a first adhesive region and a second adhesive region surrounding the first adhesive region, the first adhesive region covers the first lamination portion, and the second adhesive region covers the second lamination portion.
In one embodiment, the first glue area has a height equal to the distance between the cover sheet layer and the first laminate part, and the second glue area has a height equal to the distance between the cover sheet layer and the second laminate part.
In an embodiment, the display module assembly further comprises a foam layer, the foam layer and the display screen are arranged in a stacked mode, the foam layer is provided with a first through hole, the first through hole and the light-transmitting area are coaxially arranged, and the camera abuts against the foam layer.
In one embodiment, the display screen comprises a pixel layer, wherein the middle area of the pixel layer is subjected to clearance treatment to form a light-transmitting area, and the light-transmitting area is free of holes.
In a third aspect, the present application provides a mobile terminal, which includes the display module and the camera provided in the second aspect, wherein the camera is arranged corresponding to the light-transmitting area.
Compared with the prior art, the polaroid provided by the application is convenient for glue filling packaging by setting the first laminating part and the mode that the height of the first laminating part is smaller than that of the second laminating part, so that the light incident quantity of the camera can be improved, and the camera shooting quality is favorably improved. The application provides a display module assembly includes above-mentioned polaroid, and the transmissivity of light is higher, is favorable to improving the quality of making a video recording. The application provides a mobile terminal includes above-mentioned display module assembly, has higher light inlet quantity, and the quality of making a video recording is higher.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a polarizer provided in an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a display module and a camera provided in the embodiment of the present application.
FIG. 3 is a schematic structural diagram of a polarizer according to still another embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of a polarizer according to still another embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of a display module and a camera provided in another embodiment of the present application.
Fig. 6 is a schematic structural diagram of a display screen provided in an embodiment of the present application.
Fig. 7 is a schematic diagram of a mobile terminal provided in an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The present application provides a polarizer 100 adapted to a display 30, wherein the polarizer 100 can control the polarization direction of a specific light beam, when natural light passes through the polarizer 100, light with the vibration direction perpendicular to the transmission axis of the polarizer 100 will be absorbed, and only polarized light with the vibration direction parallel to the transmission axis of the polarizer 100 remains in the transmitted light, so that the display 30 can normally display images.
Referring to fig. 1 and 2, the display panel 30 includes a light-transmitting area 31 and a display area 32 surrounding the light-transmitting area 31, the polarizer 100 is used for covering the light-transmitting area 31 and the display area 32, the polarizer 100 includes a first stacked part 10 and a second stacked part 20, the first stacked part 10 is used for covering the light-transmitting area 31, and the first stacked part 10 has a first height H1; the second stacked portion 20 covers the display area 32, and the second stacked portion 20 has a second height H2, wherein the first height H1 is smaller than the second height H2, and the light transmittance of the first stacked portion 10 is greater than the light transmittance of the second stacked portion 20.
The display screen 30 includes a light-transmitting area 31 for allowing light to enter the camera for taking a picture through the area, and a display area 32 for displaying an image. The polarizer 100 may absorb light whose vibration direction is perpendicular to the transmission axis of the polarizer 100, which is not beneficial to light transmission, in order to improve the light transmittance of the light transmission region 31, when the polarizer 100 and the display 30 are stacked, holes are usually formed at the positions of the polarizer 100 corresponding to the light transmission region 31 to allow light transmission, but in the manner of forming holes in the polarizer 100, the holes and the non-holes form a higher step, and the step difference can reach 69 micrometers (generally, the total layer thickness of the polarizing layer), so that bubbles, an air layer and other phenomena can occur in the process of encapsulating and filling glue, and the boundary of the bubbles and the air layer has higher reflectivity to light, which affects the light transmittance. According to the polarizer 100 provided by the application, the first laminated part 10 with high light transmittance and covering the light transmission area 31 is arranged in the polarizer 100, the light transmission area 31 is not completely hollowed, and the first height H1 of the first laminated part 10 is smaller than the second height H2 of the second laminated part 20, so that the probability of bubbles and an air layer in the packaging process can be reduced, and the transmittance of light can be improved; the light transmittance of the first stacked portion 10 is higher than that of the second stacked portion 20, and the light transmittance can be improved, which contributes to the improvement of the imaging quality.
The difference between the first height H1 and the second height H2 is greater than 20 microns and less than 40 microns. For example, the difference between the first height H1 and the second height H2 can be 25 microns, 30 microns, 35 microns, etc. When the difference between the first height H1 and the second height H2 is greater than 20 micrometers and less than 40 micrometers, the probability of air bubbles, air layers and the like is low during glue filling of the package, so that the light passing rate is improved, and the image pickup quality is improved.
The first lamination portion 10 includes a first wave plate layer 13, and the first wave plate layer 13 is used for being attached to the light-transmitting area 31;
the second stacked portion 20 includes a second wave plate layer 25 and a polarization layer 22, and the second wave plate layer 25 is configured to be attached to the display area 32.
The first wave plate layer 13 and the second wave plate layer 25 are optical devices that can generate an additional optical path difference (or phase difference) between two optical vibrations perpendicular to each other. The first wave plate layer 13 is attached to the light transmission region 31, and does not greatly affect the light transmittance. The second wave plate layer 25 is attached to the display area 32, and the second wave plate layer 25 and the display area 32 are combined to enable the display screen 30 to normally display images.
Referring to fig. 1, in the present embodiment, the second wave plate layer 25 and the first wave plate layer 13 are an integral structure, and the heights of the second wave plate layer 25 and the first wave plate layer 13 are the same. When the second wave plate layer 25 and the first wave plate layer 13 are an integrated structure (as shown in the figure, the integrated structure is in gapless connection), the second wave plate layer 25 and the first wave plate layer 13 can be laid at one time in the production process of the polarizer 100, the process is simple, the implementation is easy, and the alignment problem cannot occur. In addition, when the second wave plate layer 25 and the first wave plate layer 13 are integrated, the overall integrity of the polarizer 100 is improved.
Referring to fig. 3, in some embodiments of the present application, the first wave-plate layer 13 and the second wave-plate layer 25 each include a half wave-plate layer 131. The half wave plate layer 131 refers to a crystal layer having a thickness of a birefringent crystal, and when normally incident light is transmitted, a phase difference between ordinary light (o light) and extraordinary light (e light) is equal to pi or an odd multiple thereof.
In another embodiment, the first wave plate layer 13 and the second wave plate layer 25 may have different thicknesses, or may not have an integral structure, but may be formed by bonding wave plate layers formed in correspondence with the light-transmitting region 31 and the display region 32, respectively.
Further, with continued reference to fig. 3, in some embodiments of the present application, the first and second wave- plate layers 13 and 25 further include a quarter-wave-plate layer 133 disposed in a stacked manner. The quarter-wave plate layer 133 refers to a birefringent single crystal thin plate having a certain thickness. And a crystal layer in which the phase difference between the ordinary ray (o ray) and the extraordinary ray (e ray) is equal to pi/2 or an odd multiple thereof when the light is transmitted through the normal incidence.
With reference to fig. 1, the first stacked part 10 further includes a functional layer 15, the functional layer 15 and the first wave plate layer 13 are stacked, and the light transmittance of the functional layer 15 is greater than that of the polarization layer 22. The functional layer 15 may be a protective film layer with a protective effect, and the functional layer 15 may protect the internal structure of the polarizer 100 from being damaged by water vapor, ultraviolet rays and other external substances in the external environment, and has a certain supporting effect, so that the film structure of the polarizer 100 is more stable. In this embodiment, the functional layer 15 is a TAC film (Triacetyl Cellulose), i.e., a Cellulose triacetate film, and the TAC film is a transparent film layer material, has a light transmittance of 93% or more, can play a certain role in protection and support, and does not affect the light transmittance, and is commonly used in a mobile terminal. In other embodiments of the present application, the functional layer 15 may be a Cyclic Olefin Polymer (COP) film, an acryl material, a polyethylene (pe) protective film, or the like.
Further, in other embodiments of the present application, the functional layer 15 may also be an anti-reflection layer having an anti-reflection function, so as to further avoid reflection of light and improve transmittance of light.
Referring to fig. 4, in some embodiments of the present disclosure, the polarizing layer 22 includes a first protective layer 221, a polarizing layer 222, and a second protective layer 223 stacked on each other, the second protective layer 223 directly covers the second wave plate layer 25, and the second protective layer 223 and the functional layer 15 are an integrated structure.
The polarizing layer 222 can control the polarization direction of a specific light beam, when natural light passes through the polarizing layer 222, light with the vibration direction perpendicular to the transmission axis of the polarizing layer 222 will be absorbed, and only polarized light with the vibration direction parallel to the transmission axis of the polarizing layer 222 remains in the transmitted light, so that the display screen 30 can normally display images. In this embodiment, the polarizing layer 222 is a PVA (polyvinyl alcohol) polyvinyl alcohol film, and the PVA film has the characteristics of high transparency, high extensibility, good iodine adsorption, good film-forming property, and the like, and after adsorbing the two-way absorption molecules of iodine, the PVA film is extended and aligned to perform a polarizing function, so that the central portion of the polarizer 100 determines key optical indexes of the polarizer 100, such as polarizing performance, transmittance, and color tone.
The first protective film layer 221 and the second protective film layer 223 can be used as a support body of the polarizing layer 222, so that the PVA film is ensured not to retract, and can be protected from being damaged by water vapor, ultraviolet rays and other external substances, in addition, the second protective layer 223 directly covers the second wave plate layer 25, and the second protective layer 223 can also play a certain role in protecting the second wave plate layer 25. In the present embodiment, the first protective film layer 221 and the second protective film layer 223 are both TAC films. In other embodiments of the present application, the first protective film layer 221 and the second protective film layer 223 may be any one of a COP film, an acryl film, or a PE film, and the materials of the first protective film layer 221 and the second protective film layer 223 may be the same or different.
When the second protection layer 223 and the functional layer 15 are integrated, the second protection layer 223 and the functional layer 15 can be laid at one time in the production process of the polarizer 100, the process is simple, the implementation is easy, and the alignment problem cannot occur. In addition, when the second protective layer 223 and the functional layer 15 are integrated, the integrity of the polarizer 100 is improved.
In some embodiments of the present application, the polarizing layer 22 includes a first protective layer 221, a polarizing layer 222, and a second protective layer 223 stacked in layers, the second protective layer 223 directly covers the second wave plate layer 25, and the first protective layer 221 and the functional layer 15 are made of the same material. When the first protective layer 221 and the functional layer 15 are made of the same material, it is equivalent to the surface of the polarizer 100 being made of the same material, and when the polarizer 100 is matched with other films, it can be ensured that different regions of the polarizer 100 have the same adhesive strength. The first protective layer 221 and the functional layer 15 may be TAC films at the same time.
To sum up, the polarizer 100 provided in the embodiment of the present application is in a manner that the height H1 of the first lamination portion 10 is smaller than the height H2 of the second lamination portion 20 by setting the first lamination portion 10, and compared with a polarizer without the first lamination portion 10 and directly opening a through hole, the polarizer 100 reduces the step height at the joint of the first lamination portion 10 and the second lamination portion 20, reduces the volume of the light-transmitting area needing to be filled with optical glue, facilitates glue filling and packaging, can improve the light inlet amount of the camera 70, and is beneficial to improving the image quality.
Referring to fig. 5, the present application provides a display module 200, which includes a polarizer 100 and a display 30, wherein the display 30 includes a transparent area 31 matching with the light hole 71 of the camera 70 and a display area 32 surrounding the transparent area 31, a first stacked portion 10 of the polarizer 100 covers the transparent area 31, and a second stacked portion 20 covers the display area 32.
The display 30 is used for displaying images, and may be an lcd (liquid crystal display) or an oled (organic Light Emitting diode) display. The display 30 and the polarizer 100 cooperate to polarize and filter part of the light so that the display 30 can display the picture normally, and reflect more light to keep the screen completely black when the screen is turned off.
The display module 200 includes the first lamination portion 10 covering the light transmission area 31, facilitates glue filling and packaging, can improve the light inlet amount of the camera 70, and is beneficial to improving the camera shooting quality, and the light transmission area 31 is adapted to the light inlet area 71 of the camera 70, so that the light transmittance can be further improved, and the camera shooting quality can be improved.
Referring to fig. 5, the display module 200 further includes a cover plate layer 40 and an optical adhesive layer 50, wherein the optical adhesive layer 50 is filled between the cover plate layer 40 and the polarizer 100. The cover plate layer 40 plays a role in protecting the display module 200 from moisture, ultraviolet rays and other foreign substances in the external environment. The optical adhesive layer 50 plays a role in adhesive bonding and filling, on one hand, the cover plate layer 40 is connected with the polarizer 100, which is beneficial to the display module 200 to form a stable integrated structure, and on the other hand, the optical adhesive layer 50 is filled between the cover plate layer 40 and the polarizer 100, so that an air layer does not exist between the cover plate layer 40 and the polarizer 100, the reflectivity of light can be greatly reduced, and the camera shooting quality is beneficial to improvement.
The cover plate layer 40 is a glass cover plate, and in other embodiments of the present application, the cover plate layer 40 may be made of other materials such as pi (polyimide) polyimide film. The optical adhesive layer 50 may be an oca (optical Clear adhesive) optical adhesive, which has the characteristics of being colorless and transparent, having a light transmittance of more than 90%, having good adhesive strength, being curable at room temperature or at intermediate temperature, and having small curing shrinkage.
The optical adhesive layer 50 includes a first adhesive region 51 and a second adhesive region 52 surrounding the first adhesive region 51, the first adhesive region 51 covers the first lamination portion 10, and the second adhesive region 52 covers the second lamination portion 20.
The height H3 of the first gluing area 51 is equal to the distance between the cover board layer 40 and the first lamination part 10, so as to ensure that the first gluing area 51 can glue the cover board layer 40 to the first lamination part 10, and the height H4 of the second gluing area 52 is equal to the distance between the cover board layer 40 and the second lamination part 20, so as to ensure that the second gluing area 52 can glue the cover board layer 40 to the second lamination part 20. Compared with the way of opening the polarizer 100 without the first lamination part 10, the difference between the height H3 of the first gluing area 51 and the height H4 of the second gluing area 52 is small, so that the probability of air layer or air bubble occurrence can be reduced, and the light transmittance is not affected by serious reflection phenomenon.
In one embodiment, the display module further includes a foam layer 60, the foam layer 60 is stacked with the display screen 30, the foam layer 60 is provided with a first through hole 61, the first through hole 61 is coaxial with the light-transmitting area 31, and the camera 70 abuts against the foam layer 60. The foam layer 60 can protect the display screen 30, so that other substances are not easy to contact the display screen 30, and the foam layer 60 has certain elasticity, so that the mobile terminal can buffer the display screen 30 when suddenly receiving some force, thereby protecting the display screen 30. The cotton layer 60 of bubble has the effect of blockking up the light, and the cotton layer 60 of bubble has seted up first through-hole 61 and the regional 31 coaxial setting of printing opacity, and the light that sees through display screen 30 can pass through-hole 61 and get into camera 70, can further improve camera 70's the light inlet quantity to improve the quality of making a video recording.
Referring to fig. 6, the display panel 30 includes a pixel layer 33, a middle area 331 of the pixel layer 33 is clearance-processed to form a transparent area 31, and the transparent area 31 has no holes. In some embodiments of the present application, the pixel layer 33 includes metal ions for display, and the middle area 331 of the pixel layer 33 is subjected to headroom processing, which means that the middle area 331 does not include metal ions and is not used for display. The clearance processing of the middle area 331 of the pixel layer 33 can greatly improve the light transmittance of the display 30, and further improve the light entering amount of the camera 70.
Referring to fig. 5 and 7, the present application provides a mobile terminal 300, which includes a display module 200 and a camera 70, wherein the camera 70 is disposed corresponding to the light-transmitting area 31.
The camera 70 of the mobile terminal 300 is disposed corresponding to the light-transmitting area 31, so that the camera 70 has a high light-entering amount and high image-capturing quality.
To sum up, the polarizer 100 provided in the embodiment of the present application facilitates the underfill package by setting the first stacked portion 10 and the height H1 of the first stacked portion 10 is less than the height H2 of the second stacked portion 20, so as to improve the light transmittance of the camera 70, which is beneficial to improving the image quality. The display module assembly 200 provided by the application comprises the polarizer 100, and the light transmittance is high, so that the camera shooting quality is favorably improved. The mobile terminal 300 provided by the application comprises the display module 200, and has a high light incoming amount and high shooting quality.
The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not intended to limit the present application in any way, and those skilled in the art can make modifications, combinations, or even simple modifications of the above disclosed technical content to equivalent embodiments without departing from the scope of the present application, and still fall within the scope of the present disclosure.

Claims (11)

1. A display module, comprising:
the display screen comprises a light-transmitting area matched with the light-transmitting hole of the camera and a display area surrounding the light-transmitting area, and the light-transmitting area is not used for displaying; and
a polarizer for covering the light transmission region and the display region, the polarizer including:
the first lamination part is used for covering the light-transmitting area, the first lamination part has a first height, the first lamination part comprises a first wave plate layer, and the first wave plate layer is attached to the light-transmitting area; and
the second laminated part is used for covering the display area, the second laminated part has a second height, the second laminated part comprises a second wave plate layer and a polarization layer, the second wave plate layer is attached to the display area, the second wave plate layer and the first wave plate layer are of an integral structure, the first height is smaller than the second height, and the light transmittance of the first laminated part is larger than that of the second laminated part;
the display module further comprises a cover plate layer and an optical adhesive layer, wherein the optical adhesive layer is filled between the cover plate layer and the polaroid.
2. The display module of claim 1, wherein the second wave plate layer and the first wave plate layer are the same height.
3. The display module of claim 1, wherein the first laminate portion further comprises a functional layer, the functional layer and the first waveplate layer are arranged in a laminate, and the functional layer has a light transmittance that is greater than a light transmittance of the polarizing layer.
4. The display module according to claim 3, wherein the polarizing layer comprises a first protective layer, a polarizing layer and a second protective layer, the first protective layer, the polarizing layer and the second protective layer are stacked, the second protective layer directly covers the second wave plate layer, and the second protective layer and the functional layer are of an integrated structure.
5. The display module according to claim 3, wherein the polarizing layer comprises a first protective layer, a polarizing layer and a second protective layer, the first protective layer, the polarizing layer and the second protective layer are stacked, the second protective layer directly covers the second wave plate layer, and the first protective layer and the functional layer are made of the same material.
6. The display module of claim 1, wherein the difference between the first height and the second height is greater than 20 microns and less than 40 microns.
7. The display module as claimed in claim 1, wherein the optical adhesive layer comprises a first adhesive region and a second adhesive region surrounding the first adhesive region, the first adhesive region covers the first lamination portion, and the second adhesive region covers the second lamination portion.
8. The display module of claim 7, wherein the first glue area has a height equal to a distance between the cover plate layer and the first laminate portion, and the second glue area has a height equal to a distance between the cover plate layer and the second laminate portion.
9. The display module according to claim 1, wherein the display module further comprises a foam layer, the foam layer and the display screen are stacked, the foam layer is provided with a first through hole, the first through hole and the light-transmitting area are coaxially arranged, and the camera abuts against the foam layer.
10. The display module of claim 1, wherein the display screen comprises a pixel layer, wherein a middle region of the pixel layer is free to form the light transmissive region, and wherein the light transmissive region is void-free.
11. A mobile terminal, comprising the display module according to any one of claims 1 to 10 and a camera, wherein the camera is disposed corresponding to the light-transmitting area.
CN201910435473.7A 2019-05-23 2019-05-23 Polaroid, display module and mobile terminal Active CN110133787B (en)

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