CN113253377A - Polaroid and preparation method thereof, display screen and electronic equipment - Google Patents
Polaroid and preparation method thereof, display screen and electronic equipment Download PDFInfo
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- CN113253377A CN113253377A CN202110534751.1A CN202110534751A CN113253377A CN 113253377 A CN113253377 A CN 113253377A CN 202110534751 A CN202110534751 A CN 202110534751A CN 113253377 A CN113253377 A CN 113253377A
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Classifications
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, 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
- G02B5/3041—Polarisers, 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
- G02B5/305—Polarisers, 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 including organic materials, e.g. polymeric layers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
Abstract
The application relates to the technical field of display, in particular to a polarizer, a preparation method thereof, a display screen and electronic equipment. The method comprises the following steps: providing a first protective layer, wherein the first protective layer is used for isolating water and oxygen; forming a polarizing layer having an opening on the first protective layer; and forming a light-transmitting filling part in at least the opening of the polarizing layer, wherein the shape and the size of the light-transmitting filling part in the opening of the polarizing layer are the same as those of the opening of the polarizing layer, the thickness of the light-transmitting filling part in the opening of the polarizing layer is the same as the depth of the opening of the polarizing layer, and the light transmittance of the light-transmitting filling part is greater than that of the polarizing layer. By the mode, the problems that when the polaroid is assembled on the display screen, other layers of the display screen are sunken, broken and the like can be avoided.
Description
Technical Field
The application relates to the technical field of display, in particular to a polarizer, a preparation method thereof, a display screen and electronic equipment.
Background
In the related art, a technical idea of arranging an optical device on a front panel of a mobile phone below a display screen is proposed, so that the space of the front panel of the mobile phone is released, and the screen occupation ratio is improved.
However, due to the poor light transmission of the polarizer, the optical devices may be affected or even fail to operate properly after being disposed under the display screen.
Disclosure of Invention
The technical problem to be solved in the application is to provide a polarizer, a preparation method thereof, a display screen and an electronic device.
In one aspect, the present application provides a method for manufacturing a polarizer, including: providing a first protective layer, wherein the first protective layer is used for isolating water and oxygen; forming a polarizing layer having an opening on the first protective layer; and forming a light-transmitting filling part in at least the opening of the polarizing layer, wherein the shape and the size of the light-transmitting filling part in the opening of the polarizing layer are the same as those of the opening of the polarizing layer, the thickness of the light-transmitting filling part in the opening of the polarizing layer is the same as the depth of the opening of the polarizing layer, and the light transmittance of the light-transmitting filling part is greater than that of the polarizing layer.
In another aspect, the present application provides a polarizer, including: a polarizing layer having openings; the light-transmitting filling parts are at least formed in the openings of the polarizing layer, the shapes and the sizes of the light-transmitting filling parts in the openings of the polarizing layer are the same as those of the openings of the polarizing layer, the thickness of the light-transmitting filling parts in the openings of the polarizing layer is the same as the depth of the openings of the polarizing layer, and the light transmittance of the light-transmitting filling parts is greater than that of the polarizing layer; and a first protective layer disposed at one side of the polarizing layer, wherein the first protective layer is used to insulate water and oxygen.
In yet another aspect, the present application provides a display screen, including: a display panel; the polarizer is arranged on one side of the display panel, and the polarizer is the polarizer as described above.
In yet another aspect, the present application provides an electronic device, comprising: a display screen as previously described; and the optical device is arranged below the display screen and is arranged in the area corresponding to the light-transmitting filling part in the opening of the polarizing layer.
The beneficial effect of this application is: different from the prior art, because this application is not got rid of the part of the corresponding optical device of whole polaroid through modes such as digging the hole, and the thickness on polarisation layer is far less than the thickness of whole polaroid, consequently, the trompil degree of depth on the polarisation layer is also far less than the degree of depth at the position of digging the hole of polaroid among the prior art, when avoiding appearing the polaroid equipment to the display screen, sunken, fracture scheduling problem appears in other layers of display screen. In addition, be formed with printing opacity filling portion in the trompil of polarized light layer in this application, because the shape and the size of the printing opacity filling portion that should be located in the trompil of polarized light layer all are the same with the shape and the size of the trompil of polarized light layer, and its thickness is the same with the degree of depth of the trompil of polarized light layer, consequently, this application need not utilize optical cement to fill the trompil department on polarized light layer, the problem of the trompil position unevenness on polarized light layer and the bubble appears easily in filling process has been avoided, the process is reduced, the subsequent laminating of the polarizer of being convenient for.
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. Wherein:
FIG. 1 is a schematic view of a polarizing layer having an opening during a process of manufacturing a polarizer;
FIG. 2 is a flow chart of a method for manufacturing a polarizer according to a first embodiment of the present disclosure;
FIG. 3 is a flow chart of a method for manufacturing a polarizer according to a second embodiment of the present application;
FIG. 4 is a flow chart of a method for manufacturing a polarizer according to a third embodiment of the present application;
FIG. 5 is a flow chart of a method for manufacturing a polarizer according to a fourth embodiment of the present application;
FIG. 6 is a flowchart of step S20 in FIG. 1;
FIG. 7 is a flow chart of a method for manufacturing a polarizer according to a fifth embodiment of the present application;
FIG. 8 is a structural view of a first embodiment of a polarizer of the present application;
FIG. 9 is a structural view of a second embodiment of a polarizer of the present application;
FIG. 10 is a structural view of a third embodiment of a polarizer of the present application;
FIG. 11 is a structural view of a fourth embodiment of a polarizer of the present application;
FIG. 12 is a structural view of a fifth embodiment of a polarizer of the present application;
FIG. 13 is a structural view of a sixth embodiment of a polarizer of the present application;
FIG. 14 is a block diagram of one embodiment of a display screen of the present application;
FIG. 15 is a partial block diagram of an embodiment of an electronic device according to the present application.
Detailed Description
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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the 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.
In the long-term research and development process of the invention of the present application, it is found that in the prior art, a part of the structure of the display screen corresponding to the camera is removed, for example, a part of the polarizer corresponding to the camera is removed by digging a hole, so that light can enter the display screen from the outside and be received by the camera. However, if the hole of the polarizer is not filled and is directly stacked with other layers of the display screen, the other layers of the display screen are prone to cause problems such as sinking and breaking at the hole. However, in the method of dispensing the hole-digging portion of the polarizer to achieve filling, since it is difficult to grasp the dispensing amount, the dispensing material may overflow to cause poor appearance, or bubbles may be generated due to insufficient dispensing amount, which may cause the display screen to be easily deformed at the hole-digging portion and affect the optical imaging.
Referring to fig. 1 and 2 together, fig. 1 is a schematic diagram of a polarizing layer having an opening during a polarizer manufacturing process, and fig. 2 is a flowchart of a polarizer manufacturing method according to a first embodiment of the present disclosure. As shown in fig. 1, the method for preparing the polarizer includes the following steps:
s10: a first protective layer is provided.
Specifically, the first protective layer serves to block water and oxygen, and the material of the first protective layer may be at least one of triacetylcellulose, polymethylmethacrylate, thermoplastic polyurethane, polyimide, polyethylene terephthalate, cyclic olefin polymer, or polycarbonate.
Alternatively, the first protective layer may be a Triacetyl cellulose (TAC) film having a high light transmittance, good water resistance, and a certain mechanical strength.
S20: a polarizing layer having an opening is formed on the first protective layer.
The polarizing layer may be formed with openings before it is disposed on the first protective layer, or may be formed with openings by coating a partial surface of one side of the first protective layer with a polarizing material. The opening is a through hole.
Wherein, the polarisation layer can include the polarisation rete, and perhaps, the polarisation layer can include the polarisation rete and the lambda/4 phase difference rete of range upon range of setting, and lambda/4 phase difference rete is located the one side that the first protective layer was kept away from to the polarisation rete. The circularly polarized filter composed of the polarizing film layer and the lambda/4 phase difference film layer has a function of converting linearly polarized light into circularly polarized light or elliptically polarized light, thereby blocking external light reflected at an interface between an air layer and an optical device of the display screen and an interface between the air layer and the display, and improving the contrast of the display screen provided with the polarizing layer under ambient light.
The λ/4 phase difference film layer can exhibit a λ/4 phase difference, and specifically, a λ/4 phase difference is ideally given to all wavelengths in the visible light region.
The material of the polarizing film layer includes a liquid crystal material and a dichroic dye. Alternatively, the polarizing film layer may be a polyvinyl alcohol (PVA) film layer. Further, iodine or dichroic dye is adsorbed on the polyvinyl alcohol polarizing film layer.
The first protection layer can support and protect the polyvinyl alcohol polarizing film layer, the stretched polyvinyl alcohol polarizing film layer is guaranteed not to retract, and the TAC film with high light transmittance and good water resistance can be used for the first protection layer to protect the polarizing film layer due to the fact that polyvinyl alcohol is easy to hydrolyze.
S30: and forming a light-transmitting filling part at least in the opening of the polarizing layer.
The shape and the size of the light-transmitting filling part in the opening of the polarizing layer are the same as those of the opening of the polarizing layer, and the thickness of the light-transmitting filling part in the opening of the polarizing layer is the same as the depth of the opening of the polarizing layer. Wherein, the light transmittance of the light-transmitting filling part is greater than that of the polarizing layer.
Specifically, the material of the light-transmissive filling portion is different from the material of the polarizing layer, and typically, the light transmittance of the polarizing layer is 45% to 55%, the light transmittance of the light-transmissive filling portion in the embodiment of the present application is 90% to 99.9%, and optionally, the light transmittance of the light-transmissive filling portion in the embodiment of the present application is 94% to 99.9%.
Different from the prior art, because this application is not got rid of the part of the corresponding optical device of whole polaroid through modes such as digging the hole, and the thickness on polarisation layer is far less than the thickness of whole polaroid, consequently, the trompil degree of depth on the polarisation layer is also far less than the degree of depth at the position of digging the hole of polaroid among the prior art, when avoiding appearing the polaroid equipment to the display screen, sunken, fracture scheduling problem appears in other layers of display screen. In addition, be formed with printing opacity filling portion in the trompil of polarized light layer in this application, because the shape and the size of the printing opacity filling portion that should be located in the trompil of polarized light layer all are the same with the shape and the size of the trompil of polarized light layer, and its thickness is the same with the degree of depth of the trompil of polarized light layer, consequently, this application need not utilize optical cement to fill the trompil department on polarized light layer, the problem of the trompil position unevenness on polarized light layer and the bubble appears easily in filling process has been avoided, the process is reduced, the subsequent laminating of the polarizer of being convenient for.
In an embodiment, please refer to fig. 3, fig. 3 is a flowchart of a method for manufacturing a polarizer in a second embodiment of the present application. The preparation method of the polaroid comprises the following steps:
s10: a first protective layer is provided.
S20: a polarizing layer having an opening is formed on the first protective layer.
S31: and forming a light-transmitting filling part in the opening of the polarizing layer and on the side of the polarizing layer away from the first protective layer by a vapor deposition method.
The light-transmitting filling part is positioned on one side of the polarizing layer, which is far away from the first protective layer, and is used for isolating water and oxygen.
Specifically, at least one of silicon dioxide, silicon monoxide, magnesium oxide, silicon nitride, titanium dioxide, and tantalum pentoxide is deposited in the openings of the polarizing layer and on a side of the polarizing layer facing away from the first protective layer using any one of a Plasma Enhanced Chemical Vapor Deposition (PECVD) method and a Low Pressure Chemical Vapor Deposition (LPCVD) method to form the light-transmitting filling portion.
It can be understood that the thickness of the light-transmitting filling part can be controlled by depositing the light-transmitting filling part through a vapor deposition method, and the light-transmitting filling part and the polarizing layer do not need to be bonded through a colloid material, so that the thickness of the colloid material layer inside the polarizer can be reduced, and the whole lightening and thinning of the polarizer can be realized.
In an embodiment, the transparent filling portion is an antireflection film, please refer to fig. 4, and fig. 4 is a flowchart of a method for manufacturing a polarizer in a third embodiment of the present application. The preparation method of the polaroid comprises the following steps:
s10: a first protective layer is provided.
Wherein, the first protective layer is used for isolating water and oxygen.
S20: a polarizing layer having an opening is formed on the first protective layer.
S33: and forming an antireflection film in the openings of the polarizing layer.
Before step S33, an anti-reflection film may be cut in advance, the shape and size of the anti-reflection film are the same as those of the openings of the polarizing layer, the thickness of the anti-reflection film is the same as the depth of the openings of the polarizing layer, and the cut anti-reflection film is bonded into the openings of the polarizing layer by OCA glue. In other embodiments, an antireflection film may be deposited in the openings of the polarizer layer by evaporation or deposition.
The antireflection film is used for increasing the transmission intensity of light. And analyzing the antireflection principle of the antireflection film from the angle of energy conservation. Generally, when light is incident on the surface of an optical element of a given material, the energy of the generated reflected light and transmitted light is determined, and the total energy of the reflected light and the transmitted light is equal to the energy of the incident light when absorption, scattering and other factors are not considered. I.e. satisfying the law of conservation of energy. After the surface of the optical element is coated with the film, the reflected light, the transmitted light and the incident light still meet the law of energy conservation without considering other factors such as absorption, scattering and the like of the film. The antireflection film is used for redistributing the energy of the reflected light and the transmitted light. For an antireflection film, the energy of reflected light is reduced and the energy of transmitted light is increased as a result of the distribution. Therefore, the reflection reducing film acts to redistribute the energy of the reflected light and the transmitted light on the surface of the optical element, and the energy of the transmitted light is increased and the energy of the reflected light is reduced as a result of the redistribution.
In an embodiment, please refer to fig. 5, fig. 5 is a flowchart illustrating a method for manufacturing a polarizer according to a fourth embodiment of the present application. The preparation method of the polaroid comprises the following steps:
s10: providing a first protective layer, wherein the first protective layer is used for isolating water and oxygen.
S20: a polarizing layer having an opening is formed on the first protective layer.
S33: and forming an antireflection film in the openings of the polarizing layer.
S40: and forming a second protective layer on the side of the polarizing layer and the antireflection film, which is far away from the first protective layer.
Specifically, the second protective layer is used for insulating water and oxygen, and the material of the first protective layer may be at least one of triacetylcellulose, polymethylmethacrylate, thermoplastic polyurethane, polyimide, polyethylene terephthalate, cyclic olefin polymer, or polycarbonate.
Alternatively, the second protective layer may be a Triacetyl cellulose (TAC) film having high light transmittance, good water resistance, and certain mechanical strength.
In an embodiment, referring to fig. 6, fig. 6 is a flowchart of step S20 in fig. 1, and step S20 includes:
s21: and (3) casting the polyvinyl alcohol membrane casting solution into a membrane by casting, and then drying to obtain the polyvinyl alcohol base membrane.
Wherein, the polyvinyl alcohol casting solution comprises a solvent, polyvinyl alcohol and a surfactant. And (3) casting and coating the polyvinyl alcohol casting solution on a carrying platform, drying in a drying chamber, stripping from the carrying platform after film formation, and cutting edges and rolling to obtain a finished polyvinyl alcohol base film.
S22: the polyvinyl alcohol-based film is stretched to obtain a polarizing film.
And stretching the polyvinyl alcohol base film on heating and stretching equipment to obtain the polyvinyl alcohol polarizing film.
Further, a polyvinyl alcohol polarizing film and a λ/4 phase difference film may be combined on a combining device to obtain a polarizing film of a laminated structure.
S23: an opening is formed in the polarizing film.
S24: the polarizing film with the opening is attached to the first protective layer through a colloid material.
Wherein, the colloid material can be pressure sensitive adhesive.
In an embodiment, please refer to fig. 7, and fig. 7 is a flowchart illustrating a method for manufacturing a polarizer according to a fifth embodiment of the present application. Step S20 in the above embodiment includes:
s25: and coating a polyvinyl alcohol film casting solution on the local surface of the first protective layer to form a polarizing layer with openings.
And coating the polyvinyl alcohol film casting solution on the local surface of the first protective layer, drying in a drying chamber, and forming the polarizing layer with openings after film formation. It is understood that the polarizing layer can be made thinner by coating and film formation.
The present application provides a polarizer 10, and the polarizer 10 is manufactured by the method for manufacturing the polarizer 10. Referring to fig. 1 and 8 together, fig. 8 is a structural diagram of a polarizer according to a first embodiment of the present application.
The polarizer 10 at least includes: polarizing layer 11 having opening 101, light-transmitting filling part 12, and first protective layer 13
The light transmissive filling parts 12 are formed at least in the openings 101 of the polarizing layer 11, the shape and size of the light transmissive filling parts 12 located in the openings 101 of the polarizing layer 11 are the same as those of the openings 101 of the polarizing layer 11, and the thickness of the light transmissive filling parts 12 located in the openings 101 of the polarizing layer 11 is the same as the depth of the openings 101 of the polarizing layer 11. The light transmittance of the light transmissive filling part 12 is greater than the light transmittance of the polarizing layer 11. The material of the light-transmissive filling part 12 is different from the material of the polarizing layer 11, and typically, the light transmittance of the polarizing layer 11 is 45% to 55%, the light transmittance of the light-transmissive filling part 12 in the embodiment of the present application is 90% to 99.9%, and optionally, the light transmittance of the light-transmissive filling part 12 in the embodiment of the present application is 94% to 99.9%.
The first protective layer 13 is used to insulate water and oxygen, and the material of the first protective layer 13 may be at least one of triacetylcellulose, polymethylmethacrylate, thermoplastic polyurethane, polyimide, polyethylene terephthalate, cyclic olefin polymer, or polycarbonate. Alternatively, the first protective layer 13 may be a Triacetyl cellulose (TAC) film having a high light transmittance, good water resistance, and a certain mechanical strength.
In an embodiment, please refer to fig. 9, fig. 9 is a structural diagram of a second embodiment of a polarizer of the present application. The light-transmitting filling portion 12 is formed in the opening 101 of the polarizing layer 11 and on a side of the polarizing layer 11 away from the first protective layer 13, wherein the light-transmitting filling portion 12 on the side of the polarizing layer 11 away from the first protective layer 13 is used for isolating water and oxygen.
Wherein the light-transmissive filling part 12 is deposited within the opening 101 of the polarizing layer 11 and on the side of the polarizing layer 11 facing away from the first protective layer 13 using any one of a Plasma Enhanced Chemical Vapor Deposition (PECVD) method and a Low Pressure Chemical Vapor Deposition (LPCVD) method. The material of the light-transmissive filling portion 12 is at least one of silicon dioxide, silicon monoxide, magnesium oxide, silicon nitride, titanium dioxide, and tantalum pentoxide.
In an embodiment, please refer to fig. 10, fig. 10 is a structural diagram of a third embodiment of a polarizer of the present application. The light-transmitting filling portion 12 is an anti-reflection film 16, wherein the shape and the size of the anti-reflection film 16 are the same as those of the opening 101 of the polarizing layer 11, the thickness of the anti-reflection film 16 is the same as that of the polarizing layer 11, and the anti-reflection film 16 is used for increasing the transmission intensity of light.
In an embodiment, please refer to fig. 11, fig. 11 is a structural diagram of a fourth embodiment of a polarizer of the present application. The polarizer 10 further includes: a second protective layer 14.
The second protective layer 14 is disposed on a side of the polarizing layer 11 and the light transmissive filling part 12 facing away from the first protective layer 13, wherein the second protective layer 14 is used to insulate water and oxygen.
The material of the first protective layer 13 and the second protective layer 14 in the above embodiments is at least one of triacetylcellulose, polymethyl methacrylate, thermoplastic polyurethane, polyimide, polyethylene terephthalate, cyclic olefin polymer, or polycarbonate.
In an embodiment, please refer to fig. 12, fig. 12 is a structural diagram of a fifth embodiment of a polarizer of the present application. A colloidal material layer 15 is disposed between the first protective layer 13 and the polarizing layer 11, and between the second protective layer 14 and the polarizing layer 11, and the colloidal material layer 15 may be an optically transparent pressure-sensitive layer.
In one embodiment, the polarizing layer 11 is a polyvinyl alcohol polarizing layer.
In an embodiment, please refer to fig. 13, fig. 13 is a structural diagram of a sixth embodiment of a polarizer of the present application. The polarizing layer 11 may include a polarizing film layer 111, or the polarizing layer 11 may include a polarizing film layer 111 and a λ/4 retardation film layer 112, which are stacked, with the λ/4 retardation film layer 112 being located on a side of the polarizing film layer 111 away from the first protective layer 13. The circularly polarizing filter, which is composed of the polarizing film layer 111 and the λ/4 retardation film layer 112, has a function of converting linearly polarized light into circularly polarized light or elliptically polarized light, and thus has an effect of blocking external light reflected at an interface between an air layer and the optical device 200 of the display panel 100 and an interface between an air layer and a display, and improving the contrast of the display panel 100 on which the polarizing layer 11 is mounted under ambient light.
The material of the polarizing film layer 111 includes a liquid crystal material and a dichroic dye. Alternatively, the polarizing film layer 111 may be a polyvinyl alcohol (PVA) film layer. Further, iodine or a dichroic dye is adsorbed to the polyvinyl alcohol polarizing film layer 111.
Referring to fig. 14, fig. 14 is a structural diagram of a display screen according to an embodiment of the present application. The present application provides a display screen 100, the display screen 100 includes a display panel 20, a polarizer 10, an optical transparent adhesive layer 30 and a cover plate 40, which are sequentially stacked, wherein the polarizer 10 is the polarizer 10 in the foregoing embodiment.
Referring to fig. 15, fig. 15 is a partial structural diagram of an electronic device according to an embodiment of the disclosure. The application provides an electronic equipment 1, electronic equipment 1 includes: a display screen 100 and an optical device 200, the display screen 100 being the display screen 100 in the previous embodiment.
And the optical device 200, wherein the optical device 200 is arranged below the display screen 100, the optical device 200 is arranged in a region corresponding to the light-transmitting filling part 12 in the opening 101 of the polarizing layer 11, and the light incident surface of the optical device 200 faces the display screen 100. Thus, the optical device 200 can perform imaging by receiving external light through the light transmissive filling part 12.
Further, the electronic device 1 further includes a circuit board, and the optical device 200 is carried on the circuit board, for example, the optical device 200 may be fixed on the circuit board by a camera bracket.
The optical device 200 may be a front camera for front shooting. In other embodiments, the optical device 200 may also be a structure of an optical fingerprint sensor for performing optical fingerprint imaging.
Obviously, in some embodiments, the number of the openings 101 of the polarizing layer 11 may be 2, and at different positions, the light-transmissive filling portions 12 are formed in each of the 2 openings 101. The position of one of them trompil 101 corresponds with as first optical device 200, and the position of another trompil 101 is used for corresponding with second optical device 200 to, can realize simultaneously that the camera shoots under the screen and the fingerprint under the optical screen.
The electronic device 1 further includes a memory, etc., which are not related to the improvement of the present application, and therefore, are not described in detail.
The electronic device according to the embodiment of the present application may include various handheld devices such as a Mobile phone, a tablet computer, and a digital camera having a display screen 100, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), a Mobile Station (MS), and the like. For convenience of description, the above-mentioned apparatuses are collectively referred to as electronic devices.
In an embodiment, the optical device 200 includes a camera module, and the area of the light-transmissive filling portion 12 in the opening 101 of the polarizing layer 11 is larger than the field angle of the camera module.
Different from the prior art, because this application is not got rid of the part of the corresponding optical device of whole polaroid through modes such as digging the hole, and the thickness on polarisation layer is far less than the thickness of whole polaroid, consequently, the trompil degree of depth on the polarisation layer is also far less than the degree of depth at the position of digging the hole of polaroid among the prior art, when avoiding appearing the polaroid equipment to the display screen, sunken, fracture scheduling problem appears in other layers of display screen. In addition, be formed with printing opacity filling portion in the trompil of polarized light layer in this application, because the shape and the size of the printing opacity filling portion that should be located in the trompil of polarized light layer all are the same with the shape and the size of the trompil of polarized light layer, and its thickness is the same with the degree of depth of the trompil of polarized light layer, consequently, this application need not utilize optical cement to fill the trompil department on polarized light layer, the problem of the trompil position unevenness on polarized light layer and the bubble appears easily in filling process has been avoided, the process is reduced, the subsequent laminating of the polarizer of being convenient for.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (18)
1. A method for preparing a polarizer, the method comprising:
providing a first protective layer, wherein the first protective layer is used for isolating water and oxygen;
forming a polarizing layer having an opening on the first protective layer;
and forming a light-transmitting filling part in at least the opening of the polarizing layer, wherein the shape and the size of the light-transmitting filling part in the opening of the polarizing layer are the same as those of the opening of the polarizing layer, the thickness of the light-transmitting filling part in the opening of the polarizing layer is the same as the depth of the opening of the polarizing layer, and the light transmittance of the light-transmitting filling part is greater than that of the polarizing layer.
2. The method of claim 1, wherein the step of forming a light transmissive filling at least in the openings of the polarizing layer comprises:
forming the light-transmitting filling part in the opening of the polarizing layer and on the side of the polarizing layer, which is far away from the first protective layer, by a vapor deposition method;
the light-transmitting filling part is positioned on one side, away from the first protective layer, of the polarizing layer and is used for isolating water and oxygen.
3. The method according to claim 1, wherein the light transmissive filling part is an antireflection film, and the step of forming the light transmissive filling part at least in the opening of the polarizing layer comprises:
and forming an antireflection film in the openings of the polarizing layer, wherein the antireflection film is used for increasing the transmission intensity of light.
4. The method of claim 3, wherein after the step of forming an antireflection film in the openings of the polarizing layer, the method further comprises:
and forming a second protective layer on one side of the polarizing layer and the antireflection film, which is far away from the first protective layer, wherein the second protective layer is used for isolating water and oxygen.
5. The method of claim 1, wherein the step of forming the polarizing layer with openings on the first protective layer comprises:
carrying out casting film forming on the polyvinyl alcohol film casting solution, and then drying to obtain a polyvinyl alcohol base film;
stretching the polyvinyl alcohol base film to obtain a polarizing film;
forming an opening on the polarizing film;
the polarizing film with the opening is attached to the first protective layer through a colloid material.
6. The method of claim 1, wherein the step of forming the polarizing layer with openings on the first protective layer comprises:
and coating a polyvinyl alcohol film casting solution on the local surface of the first protective layer to form a polarizing layer with openings.
7. A polarizer, comprising:
a polarizing layer having openings;
the light-transmitting filling part is at least formed in the opening of the polarizing layer, the shape and the size of the light-transmitting filling part in the opening of the polarizing layer are the same as those of the opening of the polarizing layer, the thickness of the light-transmitting filling part in the opening of the polarizing layer is the same as the depth of the opening of the polarizing layer, and the light transmittance of the light-transmitting filling part is greater than that of the polarizing layer;
a first protective layer disposed at one side of the polarizing layer, wherein the first protective layer is for insulating water and oxygen.
8. The polarizer of claim 7,
the light-transmitting filling part is formed in the opening of the polarizing layer and on one side, deviating from the first protective layer, of the polarizing layer, wherein the light-transmitting filling part located on one side, deviating from the first protective layer, of the polarizing layer is used for isolating water and oxygen.
9. The polarizer of claim 8,
the material of the light-transmitting filling part is at least one of silicon dioxide, silicon monoxide, magnesium oxide, silicon nitride, titanium dioxide and tantalum pentoxide.
10. The polarizer of claim 7,
the light-transmitting filling part is an antireflection film, the shape and the size of the antireflection film are the same as those of the openings of the polarizing layer, the thicknesses of the antireflection film and the polarizing layer are the same, and the antireflection film is used for increasing the transmission intensity of light.
11. The polarizer of claim 10, further comprising:
the second protective layer is arranged on one side, away from the first protective layer, of the polarizing layer and the light-transmitting filling part, wherein the second protective layer is used for isolating water and oxygen.
12. The polarizer according to claim 11, wherein the material of the first protective layer and the second protective layer is at least one of triacetylcellulose, polymethyl methacrylate, thermoplastic polyurethane, polyimide, polyethylene terephthalate, cyclic olefin polymer, or polycarbonate.
13. The polarizer according to claim 11, wherein a layer of colloidal material is disposed between the first protective layer and the polarizing layer, and between the second protective layer and the polarizing layer.
14. The polarizer of claim 7,
the polarizing layer is a polyvinyl alcohol polarizing layer.
15. The polarizer of claim 7, wherein the polarizing layer comprises: .
The polarizing film comprises a polarizing film layer and a lambda/4 phase difference film layer which is laminated with the polarizing film layer.
16. A display screen, comprising:
a display panel;
a polarizer disposed on one side of the display panel, wherein the polarizer is the polarizer according to any one of claims 7 to 15.
17. An electronic device, comprising:
a display screen as defined in claim 16;
and the optical device is arranged below the display screen and is arranged in an area corresponding to the light-transmitting filling part in the opening of the polarizing layer.
18. The electronic device of claim 17, wherein the optical device comprises a camera module, and an area of the light-transmissive filling portion in the opening of the polarizing layer is larger than a field angle of the camera module.
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Application publication date: 20210813 |