CN111239883B - Polarizer, LCD screen and OLED screen - Google Patents
Polarizer, LCD screen and OLED screen Download PDFInfo
- Publication number
- CN111239883B CN111239883B CN202010102685.6A CN202010102685A CN111239883B CN 111239883 B CN111239883 B CN 111239883B CN 202010102685 A CN202010102685 A CN 202010102685A CN 111239883 B CN111239883 B CN 111239883B
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- polarizer
- groove
- flat layer
- area
- transparent substrate
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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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3083—Birefringent or phase retarding elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/868—Arrangements for polarized light emission
Abstract
The application discloses a polaroid, LCD screen and OLED screen, the polaroid includes the printing opacity base plate, the surface is equipped with first recess and second recess respectively about the printing opacity base plate, first recess and second recess set up relatively, the surface is including polarizing area and non-polarizing area respectively about the printing opacity base plate, the position coating in the polarizing area of printing opacity base plate surface has dichroism material, the position that the printing opacity base plate surface was equipped with first recess and second recess is the non-polarizing area, the printing opacity base plate upper surface is equipped with first flat layer, the printing opacity base plate lower surface is equipped with the second flat layer, first flat layer and the setting of non-polarizing area are all covered on the flat layer of second. According to the technical scheme provided by the embodiment of the application, the opposite grooves are formed in the transparent substrate, so that the polaroid forms a high-transmission unpolarized area at the positions of the grooves, no aberration exists between the polarized area and the unpolarized area of the polaroid, no crack exists in the unpolarized area, and the performance of the polaroid is improved.
Description
Technical Field
The present invention relates generally to the field of displays, and more particularly to polarizers, LCD screens, and OLED screens.
Background
In recent years, a high screen occupation ratio is a mainstream design scheme in the display field and is favored by consumers, and meanwhile, an optical module such as a camera or face recognition is arranged under a non-display or weak display area of a display screen, so that the research and development process which can improve the screen occupation ratio and beautify the whole display screen device is widely concerned.
The polarizer with a module structure has a relatively low transmittance of 50% of a theoretical transmittance, and the low transmittance affects the performance of the optical electronic device. The preparation of the unpolarized area on the polarizing plate is an effective scheme for providing a window for optical equipment, the prior processes such as punching, laser cutting and the like are used for carrying out pattern processing on a polarizer monomer, the polarizer in the pattern area is completely cut, although the process can also provide an opening for module structures such as a camera and the like, the punching can enable the polarizer to form certain offset and cracks, the offset structure is easy to cause air bubbles, optical cement glue overflow, depression of a backboard or a cover plate of a flexible display and the like in flexible lamination, and finally causes abnormal shooting function, and on the other hand, the cracks can also influence the reliability of the polarizer.
Disclosure of Invention
In view of the above-mentioned drawbacks or deficiencies in the prior art, it would be desirable to provide a polarizer, an LCD screen, and an OLED screen.
In a first aspect, a polarizer is provided, which includes a transparent substrate, wherein a first groove and a second groove are respectively disposed on an upper surface and a lower surface of the transparent substrate, the first groove and the second groove are disposed opposite to each other, the upper surface and the lower surface of the transparent substrate respectively include a polarized region and a non-polarized region, a dichroic material is coated on the surface of the transparent substrate at the position of the polarized region, the position of the surface of the transparent substrate at which the first groove and the second groove are disposed is the non-polarized region,
the upper surface of the light-transmitting substrate is provided with a first flat layer, the lower surface of the light-transmitting substrate is provided with a second flat layer, and the first flat layer and the second flat layer are arranged to cover the polarized region and the non-polarized region.
In a second aspect, an LCD screen is provided, which includes the polarizer.
In a third aspect, an OLED screen is provided, which includes the polarizer.
According to the technical scheme provided by the embodiment of the application, the opposite grooves are formed in the transparent substrate, so that the polaroid forms a high-transmission unpolarized area at the positions of the grooves, no aberration exists between the polarized area and the unpolarized area of the polaroid, no crack exists in the unpolarized area, and the performance of the polaroid is improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a polarizer structure according to an embodiment;
FIG. 2 is a schematic diagram of a polarizer structure in another embodiment.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 and fig. 2, the present embodiment provides a polarizer, including a transparent substrate 1, where the upper and lower surfaces of the transparent substrate 1 are respectively provided with a first groove 12 and a second groove 13, the first groove 12 and the second groove 13 are oppositely disposed, the upper and lower surfaces of the transparent substrate 1 respectively include a polarized region and a non-polarized region, the surface of the transparent substrate is coated with a dichroic material 11 at the position of the polarized region, the surface of the transparent substrate is provided with the first groove 12 and the second groove 13 at the position of the non-polarized region,
the upper surface of the light-transmitting substrate 1 is provided with a first flat layer 2, the lower surface of the light-transmitting substrate 1 is provided with a second flat layer 3, and the first flat layer 2 and the second flat layer 3 are arranged to cover the polarized light region and the non-polarized light region.
In the implementation, the upper surface and the lower surface of the transparent substrate are provided with the grooves, the positions of the grooves are defined as groove areas, other areas of the transparent substrate are defined as flat areas, the two grooves are oppositely arranged, and the positions of the grooves are not coated with dichroic substances, so that the polarizer forms a high-transmission unpolarized area at the positions of the grooves, and finally, no offset exists between the polarized area and the unpolarized area on the polarizer, and no crack exists in the unpolarized area, thereby further improving the performance of the polarizer, avoiding the problems of bubbles or glue overflow and the like in the subsequent use; the dichroic substance coated in the embodiment is a polarizing substance such as iodine or dye, and the upper and lower surfaces of the light-transmitting substrate are respectively provided with a flat layer, and the flat layers cover the upper surface of the light-transmitting substrate and the corresponding grooves to protect and flatten the upper and lower surfaces of the light-transmitting substrate;
the grooves formed in the upper surface and the lower surface of the light-transmitting substrate can be set to be different shapes, different jigs are selected to be ground and etched according to different shapes according to actual requirements, and the process steps are simple and easy to operate.
Further, the depth of the first groove 12 and the second groove 13 is 1-5 μm, and the thickness of the transparent substrate 1 is 5-20 μm.
The middle of the light-transmitting substrate in the embodiment is a PVA film (polyvinyl alcohol film), the upper surface and the lower surface of the light-transmitting substrate are respectively coated with dichroic substances, the thickness of the light-transmitting substrate is set to be 5-20 mu m, two opposite grooves are formed in the upper surface and the lower surface of the light-transmitting substrate in a grinding mode and the like, the dichroic substances at the opposite positions of the upper surface and the lower surface of the light-transmitting substrate need to be removed through grinding, the depth of each groove is set to be 1-5 mu m, the upper polarizing substances and the lower polarizing substances can be removed, meanwhile, the PVA layer is slightly etched, and a non-polarizing area is formed.
Further, the thickness of the first flat layer 2 and the second flat layer 3 is 1-10 μm.
In this embodiment, a first flat layer and a second flat layer are respectively formed on the upper and lower surfaces of the polarizer, and the two flat layers protect the transparent substrate on the one hand and fill up the ground transparent substrate on the other hand, so as to eliminate the offset generated by the transparent substrate, and the thickness of the polarizer is set to be 1-10 μm.
Further, the material of the first flat layer 2 and the second flat layer 3 is polyimide, polyacrylate or pressure sensitive adhesive.
In the embodiment, the flat layer can be prepared by adopting various materials, such as Polyimide (PI) or acrylic series glue materials, such as polyacrylate, the materials have good fluidity, the preparation of the flat layer is simpler and more convenient, and the flat layer has a good flat effect; furthermore, the preparation of the flat layer can be carried out by adopting a pressure-sensitive adhesive, so that the flat layer not only has a flat effect, but also can realize the adhesion of two layers of materials through the pressure-sensitive adhesive; the preparation of the flat layer by the material also ensures that the formed flat layer has higher passing rate and ensures the using effect of the polaroid.
Further, a protective layer 4 is arranged on the upper surface of the first flat layer 1, and a protective layer 4 is arranged on the lower surface of the second flat layer 3.
As shown in fig. 1, in this embodiment, a protective layer is further disposed outside the upper and lower flat layers, and the polarizer after being attached with the protective layer can be used for preparing an LCD screen.
Further, the material of the protective layer 4 is Triacetylcellulose (TAC) or polyethylene terephthalate (PET) or cyclic olefin Copolymer (COP). Protective layer materials are provided in this embodiment, such as, but not limited to, using the materials described above.
Further, a protective layer 4 is arranged on the upper surface of the first flat layer 1, and a phase difference film layer 5 is arranged on the lower surface of the second flat layer 3.
As shown in fig. 2, in this embodiment, a protection layer is further disposed on the upper surface of the first flat layer, a phase difference film layer is disposed on the lower surface of the second flat layer, and linearly polarized light can be converted into circularly polarized light by the phase difference film layer, so as to obtain a circularly polarizing plate having a transparent non-polarizing area, so that the polarizing plate can be used for preparing an OLED screen.
Further, the material of the protective layer 4 is Triacetylcellulose (TAC) or polyethylene terephthalate (PET) or cyclic olefin Copolymer (COP);
the phase difference film layer 5 is made of a polymeric liquid crystal material or a stretching polymer material.
The preparation of the protective layer is performed using the above materials in the present embodiment, for example, but not limited to, using the above materials, in which a phase difference film is prepared using a widely used polymerizable liquid crystal material or a stretched polymer material.
The polaroid prepared in the embodiment does not need to be provided with the unpolarized area in a punching mode, the operation is simple, no offset exists between the formed polarized area and the unpolarized area, and the unpolarized area has no cracks, so that the performance of the polaroid is improved.
The embodiment also provides an LCD screen which comprises the polarizer. In this embodiment, the LCD screen is fabricated using the polarizer shown in fig. 1, wherein the upper and lower layers of the polarizer are finally provided as protective layers.
The embodiment also provides an OLED screen which comprises the polarizer. In this embodiment, the polarizer shown in fig. 2 is used to prepare an OLED screen, where the upper and lower layers of the polarizer are finally respectively configured as a protection layer and a phase difference film layer.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. A polarizer is characterized by comprising a transparent substrate, wherein the upper surface and the lower surface of the transparent substrate are respectively provided with a first groove and a second groove, the first groove and the second groove are oppositely arranged, the upper surface and the lower surface of the transparent substrate respectively comprise a polarized area and a non-polarized area, the surface of the transparent substrate is coated with a dichroic substance at the position of the polarized area, the position of the surface of the transparent substrate, which is provided with the first groove and the second groove, is the non-polarized area, and the first groove and the second groove are formed by grinding a jig;
the upper surface of the light-transmitting substrate is provided with a first flat layer, the lower surface of the light-transmitting substrate is provided with a second flat layer, and the first flat layer and the second flat layer are arranged to cover the polarized region and the non-polarized region.
2. The polarizer of claim 1, wherein the first groove and the second groove have a depth of 1 to 5 μm, and the transparent substrate has a thickness of 5 to 20 μm.
3. The polarizer of claim 1, wherein the first and second flat layers are 1-10 μm thick.
4. The polarizer of claim 3, wherein the material of the first and second flat layers is polyimide or polyacrylate or pressure sensitive adhesive.
5. The polarizer according to any of claims 1 to 4, wherein a protective layer is provided on an upper surface of the first flat layer, and a protective layer is provided on a lower surface of the second flat layer.
6. The polarizer of claim 5, wherein the protective layer material is triacetylcellulose or polyethylene terephthalate or cyclic olefin polymer.
7. The polarizer according to any of claims 1 to 4, wherein a protective layer is provided on the upper surface of the first flat layer, and a phase difference film layer is provided on the lower surface of the second flat layer.
8. The polarizer of claim 7, wherein the protective layer material is cellulose triacetate or polyethylene terephthalate or cyclic olefin polymer;
the phase difference film layer material is a polymeric liquid crystal material or a stretching polymer material.
9. An LCD screen comprising the polarizer of any of claims 1 to 6.
10. An OLED screen comprising the polarizer of any one of claims 1 to 4, 7 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102685.6A CN111239883B (en) | 2020-02-19 | 2020-02-19 | Polarizer, LCD screen and OLED screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102685.6A CN111239883B (en) | 2020-02-19 | 2020-02-19 | Polarizer, LCD screen and OLED screen |
Publications (2)
| Publication Number | Publication Date |
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| CN111239883A CN111239883A (en) | 2020-06-05 |
| CN111239883B true CN111239883B (en) | 2022-08-23 |
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| CN202010102685.6A Active CN111239883B (en) | 2020-02-19 | 2020-02-19 | Polarizer, LCD screen and OLED screen |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999791A (en) * | 2020-08-14 | 2020-11-27 | 武汉华星光电半导体显示技术有限公司 | Polaroid, display module and display device |
| CN114241903A (en) * | 2021-09-30 | 2022-03-25 | 华为技术有限公司 | Display panel, electronic equipment and manufacturing method of display panel |
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| CN111239883A (en) | 2020-06-05 |
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