CN110703491A - Polaroid and display device - Google Patents
Polaroid and display device Download PDFInfo
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- CN110703491A CN110703491A CN201911012658.3A CN201911012658A CN110703491A CN 110703491 A CN110703491 A CN 110703491A CN 201911012658 A CN201911012658 A CN 201911012658A CN 110703491 A CN110703491 A CN 110703491A
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- polarizer
- filter
- film
- polarizing film
- protective layer
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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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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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
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- 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
- G02B5/20—Filters
- G02B5/206—Filters comprising particles embedded in a solid matrix
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- 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
Abstract
The invention provides a polarizer and a display device. The polarizer is provided with a functional structure layer, and the functional structure layer comprises a polarizing film and filter films arranged on one side or two sides of the polarizing film. Wherein, the filter film has filter particles therein.
Description
Technical Field
The invention relates to the field of display, in particular to a polarizer and a display device.
Background
With the continuous development of the thin film transistor liquid crystal display (TFT-LCD) industry, people have higher and higher requirements on LCD display screens, which not only have continuous high requirements on product quality, but also have continuously improved requirements on LCD display effects. Such as higher color gamut, more realistic color rendering, etc. The color rendering effect of LCD is obtained by mixing red, green and blue (RGB) lights, and if a higher color gamut or a truer color rendering effect is desired, the purity of the RGB lights emitted from the display is required to be higher. To obtain more pure RGB three-color light, filtering is required based on the current LCD transmission spectrum, and the ideal filtering bands are mainly blue-violet light with wavelength less than 450nm, cyan-green light around 495nm and yellow-orange light around 595 nm.
Meanwhile, as the frequency of using LCDs in daily life of people is higher and longer, and the service life of the LCDs is longer and longer, the LCD products also need to pay more attention to the work in the aspect of protecting human eyes. At present, the LCD backlight basically adopts a blue LED as a light source, and a certain proportion of short-wavelength light still penetrates after passing through a color filter. When people directly look at the LCD screen at a close distance for a long time, the blue-violet light with the short wavelength less than 430nm can cause harm to human eyes.
In addition, the light leakage phenomenon of the polarizer used in the industry at present generally exists near the short wave 420nm, so that the dark state color cast of the LCD is caused, the contrast ratio is reduced, and the quality of the LCD screen is influenced.
Disclosure of Invention
The invention aims to provide a polarizer and a display device, which aim to solve the problems that the RGB purity of the display device in the prior art is low, and meanwhile, blue-violet light with the wavelength less than 430nm causes damage to human eyes and the light leakage phenomenon.
In order to achieve the above object, the present invention provides a polarizer, wherein the polarizer has a functional structure layer, and the functional structure layer includes a polarizing film and a filter film disposed on one side or both sides of the polarizing film. Wherein, the filter film has filter particles therein.
Further, when the filter film is disposed on one side of the polarizing film, the functional structure layer further includes a first protective layer disposed on one side of the polarizing film away from the filter film.
Furthermore, the functional structure layer further includes a second protective layer disposed between the filter film and the polarizing film, or disposed on a surface of the filter film away from the polarizing film.
Further, when the filter films are disposed on two sides of the polarizing film, the functional structure layer further includes at least two first protective layers respectively disposed between each filter film and the polarizing film or disposed on a surface of each filter film away from the polarizing film.
Further, the filter membrane further comprises a third protective layer, a release membrane and pressure-sensitive glue, wherein the third protective layer and the pressure-sensitive glue are respectively arranged on two sides of the functional structure layer, and the pressure-sensitive glue is arranged between the release membrane and the functional structure layer.
Further, the particle size of the filter particles is 500-5000 nm.
Further, the filter particles have a transparent semiconductor material and carbon quantum dots therein.
Further, the content of the carbon quantum dots is 1% -15%, and the transparent semiconductor material is one or more of titanium dioxide and zinc oxide.
Furthermore, the material of the light filter film also comprises one of triacetyl cellulose, polyethylene terephthalate and polymethyl methacrylate.
The invention also provides a display device which comprises the polaroid.
The invention has the advantages that: according to the polaroid and the display device, the optical filter is additionally arranged in the polaroid, the optical filter is provided with the optical filtering particles, the optical filtering particles comprise carbon quantum dots and transparent semiconductor materials, light with the wavelength less than 450nm can be absorbed, and accordingly, bluish violet light (with the wavelength less than 430nm) harmful to human eyes can be filtered and absorbed, the light leakage phenomenon of the existing polaroid near the wavelength of 420nm can be improved, the color gamut is improved, the dark state color cast is improved, the contrast is improved, and the eyes are protected.
Drawings
FIG. 1 is a schematic view of a layered structure of a polarizer in example 1 of the present invention;
FIG. 2 is a schematic view of a layered structure of a polarizer in example 2 of the present invention;
FIG. 3 is a schematic view of a layered structure of a polarizer in embodiment 3 of the present invention;
FIG. 4 is a schematic view of a layered structure of a polarizer in embodiment 4 of the present invention;
fig. 5 is a schematic view of a layered structure of a polarizer in embodiment 5 of the present invention.
The components in the figures are represented as follows:
a display device 1000; a polarizer 100;
a functional structure layer 10; a polarizing film 11;
a light filter film 12; a first protective layer 13;
a second protective layer 14; filter particles 15;
a third protective layer 20; a pressure sensitive adhesive 30;
and a release film 40.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are included to demonstrate that the invention can be practiced, and to provide those skilled in the art with a complete description of the invention so that the technical content thereof will be more clear and readily understood. The present invention may be embodied in many different forms of embodiments and should not be construed as limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Furthermore, the following description of the various embodiments of the invention refers to the accompanying drawings that illustrate specific embodiments of the invention, by which the invention may be practiced. Directional phrases used in this disclosure, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
When certain components are described as being "on" another component, the components can be directly on the other component; there may also be an intermediate member disposed on the intermediate member and the intermediate member disposed on the other member. When an element is referred to as being "mounted to" or "connected to" another element, they may be directly "mounted to" or "connected to" the other element or indirectly "mounted to" or "connected to" the other element through an intermediate element.
Example 1
The embodiment of the invention provides a display device 1000, wherein the display device 1000 has a polarizer 100 therein, which may be any product or component with a display function, such as a liquid crystal display, a mobile phone, a tablet computer, a notebook computer, a digital camera, a navigator, and the like.
As shown in fig. 1, the polarizer 100 has a functional structure layer 10, a third protection layer 20, a release film 40 and a pressure sensitive adhesive 30. The third protective layer 20 and the release film 40 are respectively arranged on two sides of the functional structure layer 10, and the pressure sensitive adhesive 30 is arranged between the release film 40 and the functional structure layer 10. The third protective layer 20 is used to protect the polarizer 100 from being damaged by external force. The release film 40 can protect the pressure sensitive adhesive 30 from being damaged, and avoid generating attaching bubbles. The pressure sensitive adhesive 30 is used to increase the adhesion of the polarizer 100. The display device 1000 displays an image picture by the polarized light converted by the polarizer 100.
The functional structure layer 10 includes a polarizing film 11 and two filter films 12, wherein the filter films 12 are respectively disposed on two sides of the polarizing film 11.
The polarizing film 11 is made of polyvinyl alcohol, and the polarizer 100 forms polarized light by filtering, scattering, etc. the light passing through the polarizing film 11.
The filter film 12 is a transparent film containing filter particles 15, is located on one side of the polarizing film 11 close to the pressure sensitive adhesive 30 and the release film 40, and has a film thickness of 10nm-80 um. The raw material of the filter 12 includes filter particles 15 and materials having high light transmittance, low water permeability, and excellent mechanical properties, such as triacetyl cellulose, polyethylene terephthalate, and polymethyl methacrylate. The filter film 12 may be prepared by dispersing the filter particles 15 in a solution of triacetyl cellulose, polyethylene terephthalate, polymethyl methacrylate, or the like, and then performing a desolvation drying process. Wherein, according to the dispersion effect of the filter particles 15, the filter particles 15 may be further selected to be surface-treated or ultrasonically dispersed.
The material with high light transmittance, low water permeability and excellent mechanical properties, such as triacetyl cellulose, polyethylene terephthalate, polymethyl methacrylate, etc., in the filter film 12 can protect the physical properties of the polarizing film 11, protect the polarizing film 11 from being damaged by other external substances, such as water vapor, ultraviolet rays, etc., and ensure the environmental weather resistance of the polarizer 100, and at the same time, the filter film 12 can also be used as a support for the polarizing film 11 to ensure that the polarizing film 11 does not retract.
The raw materials of the filter particles 15 include transparent semiconductor materials and carbon quantum dots, the semiconductor materials may be one or more of titanium dioxide, zinc oxide and the like, and the semiconductor materials may be prepared by a hydrothermal method, a combustion method, a sol-gel method and other preparation methods. The filter particles 15 have a particle size of 500nm to 5000nm, preferably 1000nm to 3000nm in this embodiment. The filter particles 15 are configured to absorb light within a certain wavelength range, and further, the filter particles 15 may adjust the wavelength range of light that the filter particles 15 can absorb by adjusting the content of the carbon quantum dots, in this embodiment, the content of the carbon quantum dots in the filter particles 15 is preferably 1% to 15%, and the carbon quantum dots can absorb light with a wavelength less than 450nm, so that blue-violet light (with a wavelength less than 430nm) harmful to human eyes is absorbed and filtered, and meanwhile, light with a wavelength of about 420nm is absorbed and filtered, thereby improving the light leakage phenomenon of the polarizer 100.
In the embodiment of the present invention, the polarizer 100 filters and absorbs blue-violet light with a wavelength less than 430nm by using the filter particles 15 while the thickness of the polarizer 100 is not changed by the filter film 12, and also improves the light leakage phenomenon of the polarizer 100 at a wavelength near 420nm, so as to achieve the effects of improving the color gamut, improving the dark color shift, improving the contrast, and protecting eyes, improve the quality of the polarizer 100, and improve the user experience of the display device 1000.
Example 2
The embodiment of the invention provides a display device 1000, wherein the display device 1000 has a polarizer 100 therein, which may be any product or component with a display function, such as a liquid crystal display, a mobile phone, a tablet computer, a notebook computer, a digital camera, a navigator, and the like.
As shown in fig. 2, the polarizer 100 has a functional structure layer 10, a third protection layer 20, a release film 40 and a pressure sensitive adhesive 30. The third protective layer 20 and the release film 40 are respectively arranged on two sides of the functional structure layer 10, and the pressure sensitive adhesive 30 is arranged between the release film 40 and the functional structure layer 10. The third protective layer 20 is used to protect the polarizer 100 from being damaged by external force. The release film 40 can protect the pressure sensitive adhesive 30 from being damaged, and avoid generating attaching bubbles. The pressure sensitive adhesive 30 is used to increase the adhesion of the polarizer 100. The display device 1000 displays an image picture by the polarized light converted by the polarizer 100.
The functional structure layer 10 includes a polarizer 11, a filter 12 and a first protective layer 13. The filter film 12 and the first protective layer 13 are respectively disposed on two sides of the polarizing film 11.
The polarizing film 11 is made of polyvinyl alcohol, and the polarizer 100 forms polarized light by filtering, scattering, etc. the light passing through the polarizing film 11.
The first protective layer 13 is a transparent film with good water resistance, and is located on one side of the polarizing film 11 close to the third protective layer 20. The raw material of the first protective layer 13 is triacetyl cellulose having high light transmittance and excellent water resistance. Since the raw material of the polarizing film 11, namely, the polyvinyl alcohol, is very easy to hydrolyze, in order to protect the physical properties of the polarizing film 11, the first protective layer 13 having high light transmittance, good water resistance and certain mechanical strength is disposed on one side of the polarizing film 11 for protection, so that on one hand, the first protective layer 13 can be used as a support for the polarizing film 11 to prevent the polarizing film 11 from retracting, and on the other hand, the polarizing film 11 can be protected from being damaged by other external substances such as water vapor, ultraviolet rays and the like to ensure the environmental weatherability of the polarizer 100.
The filter film 12 is a transparent film containing filter particles 15, is located on one side of the polarizing film 11 close to the pressure sensitive adhesive 30 and the release film 40, and has a film thickness of 10nm-80 um. The raw material of the filter 12 includes filter particles 15 and materials having high light transmittance, low water permeability, and excellent mechanical properties, such as triacetyl cellulose, polyethylene terephthalate, and polymethyl methacrylate. The filter film 12 may be prepared by dispersing the filter particles 15 in a solution of triacetyl cellulose, polyethylene terephthalate, polymethyl methacrylate, or the like, and then performing a desolvation drying process. Wherein, according to the dispersion effect of the filter particles 15, the filter particles 15 may be further selected to be surface-treated or ultrasonically dispersed.
The material such as triacetyl cellulose, polyethylene terephthalate, polymethyl methacrylate, etc. in the filter film 12 with high light transmittance, low water permeability and excellent mechanical properties may also protect the physical properties of the polarizing film 11, protect the polarizing film 11 from being damaged by other external substances such as water vapor, ultraviolet rays, etc., ensure the environmental weatherability of the polarizer 100, and at the same time, may also serve as a support for the polarizing film 11, ensure that the polarizing film 11 does not retract.
The raw materials of the filter particles 15 include transparent semiconductor materials and carbon quantum dots, the semiconductor materials may be one or more of titanium dioxide, zinc oxide and the like, and the semiconductor materials may be prepared by a hydrothermal method, a combustion method, a sol-gel method and other preparation methods. The filter particles 15 have a particle size of 500nm to 5000nm, preferably 1000nm to 3000nm in this embodiment. The filter particles 15 are configured to absorb light within a certain wavelength range, and further, the filter particles 15 may adjust the wavelength range of light that the filter particles 15 can absorb by adjusting the content of the carbon quantum dots, in this embodiment, the content of the carbon quantum dots in the filter particles 15 is preferably 1% to 15%, and the carbon quantum dots can absorb light with a wavelength less than 450nm, so that blue-violet light (with a wavelength less than 430nm) harmful to human eyes is absorbed and filtered, and meanwhile, light with a wavelength of about 420nm is absorbed and filtered, thereby improving the light leakage phenomenon of the polarizer 100.
In other embodiments of the present invention, the filter film 12 may be located on a side of the polarizing film 11 close to the third protection layer 20, and the first protection layer 13 may be located on a side of the polarizing film 11 close to the pressure sensitive adhesive 30 and the release film 40, and other layer structures are similar to the polarizer 100 in this embodiment, and therefore not described in detail herein. 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 embodiment of the present invention, the polarizer 100 filters and absorbs blue-violet light with a wavelength less than 430nm by using the filter particles 15 while the thickness of the polarizer 100 is not changed by the filter film 12, and also improves the light leakage phenomenon of the polarizer 100 at a wavelength near 420nm, so as to achieve the effects of improving the color gamut, improving the dark color shift, improving the contrast, and protecting eyes, improve the quality of the polarizer 100, and improve the user experience of the display device 1000.
Example 3
The embodiment of the invention provides a display device 1000, wherein the display device 1000 has a polarizer 100 therein, which may be any product or component with a display function, such as a liquid crystal display, a mobile phone, a tablet computer, a notebook computer, a digital camera, a navigator, and the like.
As shown in fig. 3, the polarizer 100 has a functional structure layer 10, a third protection layer 20, a release film 40 and a pressure sensitive adhesive 30. The third protective layer 20 and the release film 40 are respectively arranged on two sides of the functional structure layer 10, and the pressure sensitive adhesive 30 is arranged between the release film 40 and the functional structure layer 10. The third protective layer 20 is used to protect the polarizer 100 from being damaged by external force. The release film 40 can protect the pressure sensitive adhesive 30 from being damaged, and avoid generating attaching bubbles. The pressure sensitive adhesive 30 is used to increase the adhesion of the polarizer 100. The display device 1000 displays an image picture by the polarized light converted by the polarizer 100.
The functional structure layer 10 includes a polarizer 11, a filter 12, a first passivation layer 13 and a second passivation layer 14. The filter 12 and the first protective layer 13 are respectively disposed on two sides of the polarizing film 11, and the second protective layer 14 is disposed between the filter 12 and the polarizing film 11.
The polarizing film 11 is made of polyvinyl alcohol, and the polarizer 100 forms polarized light by filtering, scattering, etc. the light passing through the polarizing film 11.
The first protective layer 13 and the second protective layer 14 are transparent films with good water resistance, the first protective layer 13 is located on one side of the polarizing film 11 close to the third protective layer 20, and the second protective layer 14 is located on one side of the polarizing film 11 close to the pressure sensitive adhesive 30 and the release film 40. The raw materials of the first protective layer 13 and the second protective layer 14 are all triacetyl cellulose having high light transmittance and excellent water resistance. Since the polyvinyl alcohol serving as the raw material of the polarizing film 11 is very easy to hydrolyze, in order to protect the physical properties of the polarizing film 11, the first protective layer 13 and the second protective layer 14 having high transmittance, good water resistance and certain mechanical strength are disposed on both sides of the polarizing film 11 for protection, on one hand, the first protective layer 13 and the second protective layer 14 can be used as a support for the polarizing film 11 to prevent the polarizing film 11 from retracting, and on the other hand, the polarizing film 11 can be protected from being damaged by moisture, ultraviolet rays and other external substances to ensure the environmental weatherability of the polarizing film 100.
The filter film 12 is a transparent film containing filter particles 15, and is located between the second protective layer 14 and the pressure sensitive adhesive 30, and the thickness of the film is 10nm-80 um. The raw material of the filter 12 includes filter particles 15 and materials having high light transmittance, low water permeability, and excellent mechanical properties, such as triacetyl cellulose, polyethylene terephthalate, and polymethyl methacrylate. The filter film 12 may be prepared by dispersing the filter particles 15 in a solution of triacetyl cellulose, polyethylene terephthalate, polymethyl methacrylate, or the like, and then performing a desolvation drying process. Wherein, according to the dispersion effect of the filter particles 15, the filter particles 15 may be further selected to be surface-treated or ultrasonically dispersed.
The raw materials of the filter particles 15 include transparent semiconductor materials and carbon quantum dots, the semiconductor materials may be one or more of titanium dioxide, zinc oxide and the like, and the semiconductor materials may be prepared by a hydrothermal method, a combustion method, a sol-gel method and other preparation methods. The filter particles 15 have a particle size of 500nm to 5000nm, preferably 1000nm to 3000nm in this embodiment. The filter particles 15 are configured to absorb light within a certain wavelength range, and further, the filter particles 15 may adjust the wavelength range of light that the filter particles 15 can absorb by adjusting the content of the carbon quantum dots, in this embodiment, the content of the carbon quantum dots in the filter particles 15 is preferably 1% to 15%, and the carbon quantum dots can absorb light with a wavelength less than 450nm, so that blue-violet light (with a wavelength less than 430nm) harmful to human eyes is absorbed and filtered, and meanwhile, light with a wavelength of about 420nm is absorbed and filtered, thereby improving the light leakage phenomenon of the polarizer 100.
In other embodiments of the present invention, the filter 12 may be disposed on a side of the polarizing film 11 close to the third protection layer 20, the second protection layer 14 is disposed between the filter 12 and the polarizing film 11, and the first protection layer 13 may be disposed on a side of the polarizing film 11 close to the pressure sensitive adhesive 30 and the release film 40, other layered structures are similar to the polarizer 100 in the present embodiment, and therefore not described in detail herein. 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 embodiment of the present invention, the polarizer 100 is additionally provided with the filter film 12, and the filter particles 15 are disposed in the filter film 12, so that blue-violet light with a wavelength less than 430nm can be absorbed and filtered by the filter particles 15, and a light leakage phenomenon of the polarizer 100 near a wavelength of 420nm can be improved, thereby achieving effects of increasing a color gamut, improving a dark color cast, improving a contrast ratio, and protecting eyes, improving the quality of the polarizer 100, and improving a user experience of the display device 1000.
Example 4
The embodiment of the invention provides a display device 1000, wherein the display device 1000 has a polarizer 100 therein, which may be any product or component with a display function, such as a liquid crystal display, a mobile phone, a tablet computer, a notebook computer, a digital camera, a navigator, and the like.
As shown in fig. 4, the polarizer 100 has a functional structure layer 10, a third protection layer 20, a release film 40 and a pressure sensitive adhesive 30. The third protective layer 20 and the release film 40 are respectively arranged on two sides of the functional structure layer 10, and the pressure sensitive adhesive 30 is arranged between the release film 40 and the functional structure layer 10. The third protective layer 20 is used to protect the polarizer 100 from being damaged by external force. The release film 40 can protect the pressure sensitive adhesive 30 from being damaged, and avoid generating attaching bubbles. The pressure sensitive adhesive 30 is used to increase the adhesion of the polarizer 100. The display device 1000 displays an image picture by the polarized light converted by the polarizer 100.
The functional structure layer 10 includes a polarizer 11, a filter 12, a first passivation layer 13 and a second passivation layer 14. The filter film 12 and the first protective layer 13 are respectively disposed on two sides of the polarizing film 11, and the second protective layer 14 is disposed on a surface of the filter film 12 away from the polarizing film 11.
The polarizing film 11 is made of polyvinyl alcohol, and the polarizer 100 forms polarized light by filtering, scattering, etc. the light passing through the polarizing film 11.
The first protective layer 13 and the second protective layer 14 are transparent films with good water resistance, the first protective layer 13 is located on one side of the polarizing film 11 close to the third protective layer 20, and the second protective layer 14 is located on one side of the polarizing film 11 close to the pressure sensitive adhesive 30 and the release film 40. The raw materials of the first protective layer 13 and the second protective layer 14 are all triacetyl cellulose having high light transmittance and excellent water resistance. Since the polyvinyl alcohol serving as the raw material of the polarizing film 11 is very easy to hydrolyze, in order to protect the physical properties of the polarizing film 11, the first protective layer 13 and the second protective layer 14 having high transmittance, good water resistance and certain mechanical strength are disposed on both sides of the polarizing film 11 for protection, on one hand, the first protective layer 13 and the second protective layer 14 can be used as a support for the polarizing film 11 to prevent the polarizing film 11 from retracting, and on the other hand, the polarizing film 11 can be protected from being damaged by moisture, ultraviolet rays and other external substances to ensure the environmental weatherability of the polarizing film 100.
The filter film 12 is a transparent film containing filter particles 15, is located between the second protective layer 14 and the polarizing film 11, and has a film thickness of 10nm-80 um. The raw material of the filter 12 includes filter particles 15 and materials having high light transmittance, low water permeability, and excellent mechanical properties, such as triacetyl cellulose, polyethylene terephthalate, and polymethyl methacrylate. The filter film 12 may be prepared by dispersing the filter particles 15 in a solution of triacetyl cellulose, polyethylene terephthalate, polymethyl methacrylate, or the like, and then performing a desolvation drying process. Wherein, according to the dispersion effect of the filter particles 15, the filter particles 15 may be further selected to be surface-treated or ultrasonically dispersed.
The raw materials of the filter particles 15 include transparent semiconductor materials and carbon quantum dots, the semiconductor materials may be one or more of titanium dioxide, zinc oxide and the like, and the semiconductor materials may be prepared by a hydrothermal method, a combustion method, a sol-gel method and other preparation methods. The filter particles 15 have a particle size of 500nm to 5000nm, preferably 1000nm to 3000nm in this embodiment. The filter particles 15 are configured to absorb light within a certain wavelength range, and further, the filter particles 15 may adjust the wavelength range of light that the filter particles 15 can absorb by adjusting the content of the carbon quantum dots, in this embodiment, the content of the carbon quantum dots in the filter particles 15 is preferably 1% to 15%, and the carbon quantum dots can absorb light with a wavelength less than 450nm, so that blue-violet light (with a wavelength less than 430nm) harmful to human eyes is absorbed and filtered, and meanwhile, light with a wavelength of about 420nm is absorbed and filtered, thereby improving the light leakage phenomenon of the polarizer 100.
In other embodiments of the present invention, the second protection layer 14 may be disposed on a side of the polarizing film 11 close to the third protection layer 20, the filter 12 is disposed between the second protection layer 14 and the polarizing film 11, and the first protection layer 13 may be disposed on a side of the polarizing film 11 close to the pressure sensitive adhesive 30 and the release film 40, other layered structures are similar to the polarizer 100 in the present embodiment, and therefore not described in detail herein. 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 embodiment of the present invention, the polarizer 100 is additionally provided with the filter film 12, and the filter particles 15 are disposed in the filter film 12, so that blue-violet light with a wavelength less than 430nm can be absorbed and filtered by the filter particles 15, and a light leakage phenomenon of the polarizer 100 near a wavelength of 420nm can be improved, thereby achieving effects of increasing a color gamut, improving a dark color cast, improving a contrast ratio, and protecting eyes, improving the quality of the polarizer 100, and improving a user experience of the display device 1000.
Example 5
The embodiment of the invention provides a display device 1000, wherein the display device 1000 has a polarizer 100 therein, which may be any product or component with a display function, such as a liquid crystal display, a mobile phone, a tablet computer, a notebook computer, a digital camera, a navigator, and the like.
As shown in fig. 5, the polarizer 100 has a functional structure layer 10, a third protection layer 20, a release film 40 and a pressure sensitive adhesive 30. The third protective layer 20 and the release film 40 are respectively arranged on two sides of the functional structure layer 10, and the pressure sensitive adhesive 30 is arranged between the release film 40 and the functional structure layer 10. The third protective layer 20 is used to protect the polarizer 100 from being damaged by external force. The release film 40 can protect the pressure sensitive adhesive 30 from being damaged, and avoid generating attaching bubbles. The pressure sensitive adhesive 30 is used to increase the adhesion of the polarizer 100. The display device 1000 displays an image picture by the polarized light converted by the polarizer 100.
The functional structure layer 10 includes a polarizer 11, two filter films 12, and two first protective layers 13. The filter films 12 are respectively disposed on two sides of the polarizing film 11, and the first protective layer 13 is respectively disposed between each filter film 12 and the polarizing film 11.
The polarizing film 11 is made of polyvinyl alcohol, and the polarizer 100 forms polarized light by filtering, scattering, etc. the light passing through the polarizing film 11.
The first protective layer 13 is a transparent film excellent in water resistance, and is located on both sides of the polarizing film 11. The raw material of the first protective layer 13 is triacetyl cellulose having high light transmittance and excellent water resistance. Since the raw material of the polarizing film 11, namely, the polyvinyl alcohol, is very easy to hydrolyze, in order to protect the physical properties of the polarizing film 11, the first protective layers 13 having high light transmittance, good water resistance and certain mechanical strength are disposed on both sides of the polarizing film 11 for protection, so that on one hand, the first protective layers 13 can be used as the supporting bodies of the polarizing film 11 to ensure that the polarizing film 11 does not retract, and on the other hand, the polarizing film 11 can be protected from being damaged by other external substances such as water vapor, ultraviolet rays and the like to ensure the environmental weatherability of the polarizer 100.
The filter film 12 is a transparent film containing filter particles 15, and is respectively located between a first protective layer 13 and the pressure sensitive adhesive 30 and between another first protective layer 13 and the third protective layer 20, and the film thickness is 10nm-80 um. The raw material of the filter 12 includes filter particles 15 and materials having high light transmittance, low water permeability, and excellent mechanical properties, such as triacetyl cellulose, polyethylene terephthalate, and polymethyl methacrylate. The filter film 12 may be prepared by dispersing the filter particles 15 in a solution of triacetyl cellulose, polyethylene terephthalate, polymethyl methacrylate, or the like, and then performing a desolvation drying process. Wherein, according to the dispersion effect of the filter particles 15, the filter particles 15 may be further selected to be surface-treated or ultrasonically dispersed.
The raw materials of the filter particles 15 include transparent semiconductor materials and carbon quantum dots, the semiconductor materials may be one or more of titanium dioxide, zinc oxide and the like, and the semiconductor materials may be prepared by a hydrothermal method, a combustion method, a sol-gel method and other preparation methods. The filter particles 15 have a particle size of 500nm to 5000nm, preferably 1000nm to 3000nm in this embodiment. The filter particles 15 are configured to absorb light within a certain wavelength range, and further, the filter particles 15 may adjust the wavelength range of light that the filter particles 15 can absorb by adjusting the content of the carbon quantum dots, in this embodiment, the content of the carbon quantum dots in the filter particles 15 is preferably 1% to 15%, and the carbon quantum dots can absorb light with a wavelength less than 450nm, so that blue-violet light (with a wavelength less than 430nm) harmful to human eyes is absorbed and filtered, and meanwhile, light with a wavelength of about 420nm is absorbed and filtered, thereby improving the light leakage phenomenon of the polarizer 100.
In other embodiments of the present invention, the filter films 12 may be respectively disposed on two sides of the polarizing film 11, and the first protective layer 13 may be respectively disposed on a surface of the two filter films 12 away from the polarizing film 11, and other layered structures are similar to the polarizer 100 in this embodiment, and therefore not described in detail herein. 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 embodiment of the present invention, the polarizer 100 is additionally provided with the filter film 12, and the filter particles 15 are disposed in the filter film 12, so that blue-violet light with a wavelength less than 430nm can be absorbed and filtered by the filter particles 15, and a light leakage phenomenon of the polarizer 100 near a wavelength of 420nm can be improved, thereby achieving effects of increasing a color gamut, improving a dark color cast, improving a contrast ratio, and protecting eyes, improving the quality of the polarizer 100, and improving a user experience of the display device 1000.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (10)
1. A polarizer is characterized by having a functional structure layer, wherein the functional structure layer comprises:
a polarizing film;
the light filtering film is arranged on one side or two sides of the polarizing film;
wherein, the filter film has filter particles therein.
2. The polarizer of claim 1, wherein when the filter is disposed on a side of the polarizing film, the functional structure layer further comprises a first protective layer disposed on a side of the polarizing film away from the filter.
3. The polarizer of claim 2, wherein the functional structure layer further comprises a second protective layer disposed between the filter film and the polarizing film or disposed on a surface of the filter film away from the polarizing film.
4. The polarizer of claim 1, wherein when the filter films are disposed on both sides of the polarizer film, the functional structure layer further comprises at least two first protective layers respectively disposed between each filter film and the polarizer film or disposed on a surface of each filter film away from the polarizer film.
5. The polarizer of claim 1, further comprising a third protective layer, a release film and a pressure sensitive adhesive, wherein the third protective layer and the pressure sensitive adhesive are respectively disposed on two sides of the functional structure layer, and the pressure sensitive adhesive is disposed between the release film and the functional structure layer.
6. The polarizer of claim 1 wherein the filter particles have a particle size of 500-5000 nm.
7. The polarizer of claim 1 wherein the filter particles have a transparent semiconductor material and carbon quantum dots therein.
8. The polarizer of claim 7, wherein the content of the carbon quantum dots is 1% to 15%; the transparent semiconductor material is one or more of titanium dioxide and zinc oxide.
9. The polarizer of claim 1, wherein the material of the filter further comprises one of triacetyl cellulose, polyethylene terephthalate, and polymethyl methacrylate.
10. A display device comprising the polarizer according to any one of claims 1 to 9.
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| CN201911012658.3A CN110703491A (en) | 2019-10-23 | 2019-10-23 | Polaroid and display device |
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| CN201911012658.3A CN110703491A (en) | 2019-10-23 | 2019-10-23 | Polaroid and display device |
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