WO2022211398A1 - Plaque de polarisation et appareil d'affichage optique la comprenant - Google Patents

Plaque de polarisation et appareil d'affichage optique la comprenant Download PDF

Info

Publication number
WO2022211398A1
WO2022211398A1 PCT/KR2022/004288 KR2022004288W WO2022211398A1 WO 2022211398 A1 WO2022211398 A1 WO 2022211398A1 KR 2022004288 W KR2022004288 W KR 2022004288W WO 2022211398 A1 WO2022211398 A1 WO 2022211398A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
polarizing plate
polarizer
layer
functional layer
Prior art date
Application number
PCT/KR2022/004288
Other languages
English (en)
Korean (ko)
Inventor
유정훈
조은솔
황선오
신광호
이상흠
Original Assignee
삼성에스디아이 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성에스디아이 주식회사 filed Critical 삼성에스디아이 주식회사
Priority to CN202280026579.1A priority Critical patent/CN117120893A/zh
Publication of WO2022211398A1 publication Critical patent/WO2022211398A1/fr

Links

Images

Classifications

    • 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
    • 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
    • G02B1/02—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of crystals, e.g. rock-salt, semi-conductors
    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light

Definitions

  • the present invention relates to a polarizing plate and an optical display device including the same.
  • a polarizing plate is also used in mobile optical display devices including mobile phones having an image sensor.
  • the optical display device includes a display panel 50 including a base layer 51 and a plurality of light emitting devices 52 , a polarizing plate 40 formed on the display panel 50 , and a polarizing plate
  • the cover glass 60 formed on the 40 and the image sensor 10 partially penetratingly disposed in the display panel 50 may be provided.
  • the image sensor 10 is also partially penetrated in the polarizing plate 40 .
  • the region 40a of the polarizing plate 40 corresponding to the image sensor 10 corresponds to an image non-display region in which no image is displayed.
  • the polarizing plate 40 was processed by a physical punching method or the like. However, the image may not be good due to light leakage in the image display area 40b due to bubbles, cracks, or the like in the area around the punching of the polarizing plate 40 .
  • a region 70a that allows the image sensor 10 to operate by a chemical or optical method instead of a physical punching process and a region 70b that is an image display region are provided.
  • a method of including a polarizing plate 70 was considered.
  • the display panel 50 including the light emitting element is separated by the image sensor 10 , there is a problem in that processing is difficult.
  • the display panel and the polarizing plate An optical display device in which an image sensor is disposed under a display panel without passing through the display panel is being developed.
  • one region of the polarizing plate corresponding to the image sensor should also be able to simultaneously perform the image display function, the image sensor should not be recognized while performing the image display function, and a clear image should be created during shooting.
  • a method of forming a region having a high single transmittance locally on a polarizing plate by an optical method was considered.
  • An object of the present invention is to provide a polarizing plate having a first region having a high local transmittance, and minimizing a change in the unit transmittance of the first region after being left at high temperature and high humidity.
  • Another object of the present invention is to provide a polarizing plate having a first region having a high local transmittance, and minimizing the penetration length of gaseous moisture that permeates toward the first region after being left at high temperature and high humidity.
  • Another object of the present invention is to minimize the degree of visibility of the image sensor from the outside by lowering the visibility of the image sensor from the outside when the image sensor is not used, and to increase the sharpness of the image by the image sensor when the image sensor is used.
  • the height is to provide a polarizer.
  • One aspect of the present invention is a polarizing plate.
  • the polarizing plate includes a polarizer having a light transmissive region having a first region and a second region, wherein the first region has a higher single transmittance than the second region, and from one end of the light transmissive region
  • the minimum distance (T) to the first region is 20 mm or less
  • the polarizer further includes one or more functional layers formed in a thickness direction of the polarizer at one end of the light-transmitting region, and the functional layer includes an organic material and an inorganic type. a mixture of materials, and at least one of organic-inorganic hybrid materials.
  • the organic material may include at least one resin, oligomer, or monomer selected from among (meth)acrylic, epoxy, modified (meth)acrylic, fluorine, fluorene, olefin, and ester.
  • the inorganic material may include at least one of silicon, titanium, zirconium, aluminum, boron, and tin, a metal or non-metal, oxides thereof, and nitrides thereof.
  • the organic-inorganic hybrid material may include at least one of the organic material and the inorganic material, respectively.
  • the functional layer may be a single layer or multiple layers.
  • the multilayer may include a layer including the inorganic material and a layer including the organic material.
  • the multilayer may further include a primer layer.
  • the functional layer may have a water permeability of about 1 g/m 2 ⁇ 24 hr or less.
  • the functional layer may be formed on the entire surface in the thickness direction of the polarizer.
  • the functional layer may be formed by a width of about 100% to about 120% of a maximum width of the first region in a cross section in a thickness direction of the polarizer.
  • the functional layer may have a thickness of about 0.1 ⁇ m to about 2000 ⁇ m.
  • the polarizing plate includes a first polarizing plate region including the first region and a second polarizing plate region including the second region, wherein the first polarizing plate region has a single transmittance higher than that of the second polarizing plate region can be high
  • the first polarizing plate region may have a single transmittance of about 50% or more.
  • a protective layer may be further formed on at least one surface of the polarizer.
  • the functional layer may be further formed in a thickness direction of the passivation layer.
  • the polarizing plate may have an amount of change in single transmittance of Equation 2 below about 5%:
  • C is the single transmittance (unit: %) of the region of the first polarizing plate among the polarizing plates
  • D is the unit transmittance (unit: %) of the region of the first polarizing plate measured at the same wavelength as C after the polarizing plate was left at 60° C. and 95% relative humidity for 240 hours.
  • the optical display device of the present invention includes the polarizing plate of the present invention.
  • the optical display device may include a display panel, the polarizer formed on the upper portion of the display panel, and an image sensor formed on the lower portion of the display panel, and the image sensor may be disposed under the first region of the polarizing plate.
  • the present invention provides a polarizing plate having a first region having a high local transmittance, and minimizing a change in the unit transmittance of the first region after being left at a high temperature and high humidity.
  • the present invention provides a polarizing plate having a first region having a high local transmittance, and minimizing the penetration length of gaseous moisture that permeates toward the first region after being left at high temperature and high humidity.
  • the present invention provides a polarizing plate that lowers the visibility of the image sensor from the outside when the image sensor is not used to minimize the degree of visibility of the image sensor from the outside and increases the sharpness of the image by the image sensor when the image sensor is used did.
  • FIG. 1 is a cross-sectional view of a polarizing plate according to an embodiment of the present invention.
  • FIG. 2 is a plan view of a polarizer among the polarizing plates according to an embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of an optical display device provided with a polarizing plate of the present invention.
  • FIG. 7 is a cross-sectional view of a conventional optical display device including an image sensor.
  • Example 8 is a graph showing the single transmittance (y-axis, unit: %) of the polarizing plate of Example 1 and Comparative Example 1 according to the standing time (x-axis, unit: time) at 60° C. and 95% relative humidity. .
  • FIG. 9 is a photograph according to the standing time of the polarizing plate of Example 1 at 60° C. and 95% relative humidity.
  • A shows the result when the leaving time is 0 hours
  • B is the leaving time of 120 hours
  • C the leaving time is 240 hours.
  • FIG. 10 is a photograph according to the standing time of the polarizing plate of Comparative Example 1 at 60° C. and 95% relative humidity.
  • A shows the result when the leaving time is 0 hours
  • B is the leaving time of 120 hours
  • C the leaving time is 240 hours.
  • total transmittance (Ts) and “polarization degree” mean values measured at a wavelength of 200 nm to 800 nm, preferably at a wavelength of 550 nm, respectively.
  • the single transmittance of the first region is the same throughout the first region at the same wavelength. However, even at the same wavelength, when the single transmittance is not the same in the entire first region, the single transmittance of the first region means the average single transmittance.
  • the second region has the same single transmittance in the entire second region at the same wavelength.
  • the single transmittance of the second region means the average single transmittance.
  • average single transmittance means an average value of the single transmittance in a region in which the average single transmittance is to be measured.
  • the average single transmittance may be obtained from an average value of the single transmittance obtained by arbitrarily designating a plurality of points among regions for measuring the average single transmittance.
  • water vapor transmission rate refers to a value measured at 23° C. and 99% to 100% relative humidity.
  • water permeability can be measured using water permeability measuring equipment (PERMATRAN-W, MODEL 700), and the functional layer or polarizer is cut into a film form (width x length, 10cm x 10cm) and then measured.
  • X to Y means "X or more and Y or less (X ⁇ and ⁇ Y)".
  • the polarizing plate of the present invention may be applied to an optical display device in which an image sensor (eg, a camera, etc.) is disposed in an image display area.
  • an image sensor eg, a camera, etc.
  • the polarizing plate of the present invention lowers the visibility of the image sensor from the outside to minimize the degree of visibility of the image sensor from the outside, so that the image display function can be properly performed.
  • the polarizing plate of the present invention can perform an image capturing function by increasing the sharpness of an image by the image sensor when an image sensor is used.
  • the region corresponding to the image sensor among the polarizing plates becomes the first region, and the rest of the polarizing plates except for the first region is the second region.
  • area can be As a result, the first area may perform both the image display function and the image capturing function.
  • the polarizing plate of the present invention includes a polarizer including a light-transmitting region having the first region and the second region, and minimizes the change in the single transmittance of the first region after leaving it for a long time at high temperature and high humidity, and leaving it for a long time at high temperature and high humidity Then, it is possible to minimize the penetration length of the gaseous moisture that penetrates from the outside of the polarizing plate toward the first region. Through this, both the image display function and the sharpness of the image by the image sensor can be improved even after the polarizing plate is left in high temperature and high humidity for a long time.
  • the polarizing plate of the present invention includes a polarizer including a light transmissive region having a first region and a second region, wherein the first region has a higher single transmittance than the second region at the same measurement wavelength, and the light transmissive region
  • the minimum distance (T) from one end of the to the first region is 20 mm or less
  • the polarizer further includes one or more functional layers formed in the thickness direction of the polarizer at one end of the light transmitting region, the function
  • the layer includes at least one of a mixture of an organic-based material and an inorganic-based material, and an organic-inorganic hybrid material.
  • FIGS. 1 and 2 are cross-sectional views of a polarizing plate according to an embodiment of the present invention
  • FIG. 2 is a plan view of a polarizer among the polarizing plates according to an embodiment of the present invention.
  • the polarizing plate includes a polarizer 110 , a first protective layer 120 stacked on an upper surface of the polarizer 110 , and a second protective layer 130 stacked on a lower surface of the polarizer 110 . can do. If the function of the polarizing plate can be implemented without the first protective layer 120 and the second protective layer 130 , at least one of the first protective layer 120 and the second protective layer 130 may be omitted.
  • the polarizer 110 includes a light transmissive region 114 having a first region 112 and a second region 113 , and the polarizer 110 includes a light transmissive region 114 .
  • ) further includes a functional layer 111 formed in the thickness direction of the polarizer 110 at one end 115 of the polarizer 110 .
  • the light transmissive region 114 is composed of an upper surface of the polarizer 110 , a lower surface of the polarizer 110 , and two side surfaces connecting the upper and lower surfaces, and a functional layer 111 is formed on one of the side surfaces. can be formed.
  • the functional layer 111 may be formed at one end 115 of the light transmissive region 114 to face the first region 112 .
  • the polarizer 110 includes a light transmissive region 114 having a first region 112 and a second region 113 .
  • the first area 112 and the second area 113 may form an image display area of the polarizing plate.
  • the "image display area” means an area in which an image is displayed when a polarizing plate is mounted in an optical display device.
  • the image display area of the polarizing plate may be included in 90% to 100%, preferably 100% of the polarizing plate.
  • the polarizing plate may not include an image non-display area.
  • the "image non-display area” is an area formed around the image display area and refers to an area in which a bezel, an electrode, etc. are not visually recognized by a light blocking layer or the like.
  • the first region 112 has a higher single transmittance than the second region 113 at the same measurement wavelength.
  • the first area and the second area perform both an image display function, and the first area may also perform an image capturing function by an image sensor such as a camera, which will be described in detail below, differently from the second area.
  • the second area cannot perform the image capturing function.
  • the first region 112 may have a single transmittance of 50% or more. In the above range, when the image sensor is not used, it can help to lower the visibility of the image sensor when viewed from the outside and increase the sharpness of the image through the image sensor when the image sensor is used while properly realizing the image display function. have.
  • the first region 111 has a single transmittance of, for example, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%, 74%, 75%, 76%, 77% , 78%, 79%, 80%, 81%, 82%, 83%, 84%, 85%, specifically 50% to 85%, 50% to 80%, 60% to 78%.
  • the first region 112 includes iodine ions, but may have a different iodine ion concentration profile compared to the second region 113 .
  • PVA-I 5 ions are dissociated, and thus PVA-I 5 ions may be relatively few.
  • at least one of I ⁇ , I 2 , and I 3 ⁇ ions has a higher concentration than I 5 ⁇ ions
  • the second region 113 has I ⁇ , I 2 , I ⁇ , I 2 , I
  • One or more of the 3 - ions may have a lower concentration than the I 5 - ions.
  • the cross-section of the first region 112 is not limited in shape.
  • the cross-section of the first region may be a closed curve or a closed polygon, and may be circular, semi-circular, elliptical, semi-elliptical, polygonal, or amorphous.
  • the single transmittance of the first region 112 may realize the above-described effect in a stacked configuration of an image sensor, a panel containing a light emitting element, and a polarizing plate among optical display devices.
  • a display panel including a light emitting element and an image sensor are sequentially disposed under the first region, so that the polarizing plate of the present invention can simultaneously perform an image display function and an image capturing function.
  • An embodiment of the optical display device of the present invention will be described in more detail below.
  • the second region 113 performs only an image display function and has nothing to do with an image capturing function by an image sensor in the optical display device.
  • the second region 113 has a single transmittance of 40% or more and less than 50%, for example, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48 %, 49%, 49.9%, specifically 40% to 45%.
  • the image display function can be well implemented.
  • the first region 112 and the second region 113 may have the same degree of polarization, but preferably, the first region has a lower polarization degree than the second region in consideration of the manufacturing process of the first region described below.
  • the first region 112 has a polarization degree of 5% to 85%, for example 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, specifically 50% to 75%.
  • the polarization degree of the second region 113 may be 90% or more, specifically, 90% to 100%. In the above range, there may be an effect of preventing reflection by external light.
  • the cross-section of the second region 113 may vary depending on the shape of the optical display device, but may have a rectangular or square shape.
  • the single transmittance and the degree of polarization of the first region may be obtained by forming the first region on a part of the dyed and stretched polyvinyl alcohol-based film by an optical method.
  • the first region may be formed by irradiating a portion of the dyed and stretched polyvinyl alcohol-based film with pulsed light by a Xenon Flash Lamp.
  • the area to which the pulsed light is not irradiated becomes the second area.
  • the first region is not in the form of a punching hole, but is formed integrally with the first region and the second region.
  • the present inventors have found that when the polarizer or polarizing plate having the first region formed by the above-described optical method is left at high temperature and high humidity, the single transmittance of the first region decreases compared to before leaving it at high temperature and high humidity, and the gaseous moisture content toward the first region is reduced. It was confirmed that there is a problem that the penetration length increases. When the first area is a hole by punching, the above problem does not occur at all. This is dissociated by an optical method and the I 3 - ions or I - ions remaining in the first region react with I 2 to become I 5 - ions or I 3 - ions.
  • the first region 112 does not contact one end 115 of the light transmissive region 114 , and the first region 112 and one end 115 of the light transmissive region 114 . Even when the second region 113 is formed therebetween, it is insufficient to solve the above problem.
  • the polarizer 110 particularly the second region 113, is not particularly limited, the water transmittance is 1,000 g/m 2 ⁇ 24 hr or more, specifically, 1,000 g/m 2 ⁇ 24 hr to 5,000 g/m 2 ⁇ 24 hr, so that the thickness of the polarizer is It is not possible to prevent moisture in the gaseous state from penetrating from the direction.
  • the minimum distance T from one end 115 of the light transmissive region 114 to the first region 112 is 20 mm or less, the above-described problem may be more severe.
  • the present invention solves the above problems by further including one or more functional layers 111 including organic and inorganic materials and formed in the thickness direction of the polarizer 110 at one end 115 of the light transmitting region 114 . did.
  • the amount of change in the transmittance of the unit represented by the following formula 1 may be 5% or less, specifically 0% or more and less than 5%, and more specifically 0% to 2%.
  • A is the single transmittance of the first region of the polarizer (unit: %)
  • B is the unit transmittance (unit: %) of the first region measured at the same wavelength as A after leaving the polarizer at 60° C. and 95% relative humidity for 240 hours.
  • the first region may perform both an image display function and an external image capturing function.
  • the minimum distance T from one end 115 of the light transmissive region 114 to the first region 112 is 20 mm or less.
  • the minimum distance T may be greater than 0 mm and less than or equal to 20 mm, more preferably 0 mm to 5 mm.
  • the first region 112 is formed to be spaced apart from one end 115 of the light transmissive region 114 . That is, the first region 112 does not contact the one end 115 of the light transmissive region 114 , and the second region ( 113) may be formed. Through this, the effect of stably disposing the image sensor in the display device may be further provided.
  • the present invention is not limited thereto.
  • the second region 113 may be formed around the first region 112 . This is so that most regions of the polarizer perform an image display function, and an image display function and an image capturing function can be performed by the first region, which is a part of the polarizer.
  • the polarizer 110 may further include a functional layer 111 formed at one end 115 of the light transmitting region 114 in a thickness direction of the polarizer.
  • the functional layer 111 is formed at one end 115 of the light transmissive region 114 to face the first region 112 , thereby helping to prevent penetration of gaseous moisture from the outside into the light transmissive region 114 . It is possible to increase the manufacturing processability of the polarizer.
  • the functional layer 111 includes at least one of a mixture of an organic material and an inorganic material, and an organic-inorganic hybrid material. Since the functional layer includes both an organic material and an inorganic material, it helps to prevent penetration of gaseous moisture from the outside, and it is possible to increase the adhesion of the functional layer to the polarizer.
  • the functional layer 111 has a water permeability of 1 g/m 2 ⁇ 24 hr or less, for example 0, 0.01, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1 g/m 2 . 24 hr, specifically 0 g/m 2 • 24 hr to 1 g/m 2 • 24 hr, more specifically 1 x 10 -2 g/m 2 • 24 hr to 1 g/m 2 • 24 hr. Within the above range, it may help to lower the change in the unit transmittance of the first region after being left at high temperature and high humidity.
  • the functional layer may include a mixture of an organic-based material and an inorganic-based material.
  • the organic material may include one or more kinds of materials capable of securing the moisture permeability when mixed with the inorganic material.
  • the organic material may include at least one resin, oligomer, or monomer selected from among (meth)acrylic, epoxy, modified (meth)acrylic, fluorine, fluorene, olefin, and ester.
  • the organic material may include a conventional material capable of being thermally cured or photocurable.
  • the organic material is 90% to 10% by weight of the functional layer, for example, 10% by weight, 15% by weight, 20% by weight, 25% by weight, 30% by weight, 35% by weight, 40% by weight, 45% by weight, 50% by weight.
  • Weight%, 55% by weight, 60% by weight, 65% by weight, 70% by weight, 75% by weight, 80% by weight, 85% by weight, 90% by weight, specifically 30% to 10% by weight may be included. In the above range, it can help to prevent penetration of moisture in a gaseous state from the outside and increase adhesion to the polarizer.
  • the inorganic material may include at least one of materials capable of securing the moisture permeability when mixed with the organic material.
  • the inorganic material may include at least one of two or more kinds of metals or non-metals, oxides thereof, and nitrides thereof among silicon, titanium, zirconium, aluminum, boron, and tin.
  • the inorganic material may include at least one of silica (SiO 2 ) and alumina (Al 2 O 3 ).
  • the inorganic material is 90% to 10% by weight of the functional layer, for example, 10% by weight, 15% by weight, 20% by weight, 25% by weight, 30% by weight, 35% by weight, 40% by weight, 45% by weight, 50% by weight.
  • Weight%, 55% by weight, 60% by weight, 65% by weight, 70% by weight, 75% by weight, 80% by weight, 85% by weight, 90% by weight, specifically 90% by weight to 70% by weight may be included. In the above range, it can help to prevent penetration of moisture in a gaseous state from the outside and increase adhesion to the polarizer.
  • the functional layer may include an organic-inorganic hybrid material.
  • the organic-inorganic hybrid material refers to a material in which both an organic material and an inorganic material are included in one material, and the organic material and the inorganic material are combined with each other.
  • the organic-inorganic hybrid material may include at least one of the organic material and the inorganic material, respectively.
  • the functional layer may further include an additive capable of providing an additional effect to the functional layer in addition to a mixture of an organic material and an inorganic material, or an organic-inorganic hybrid material.
  • the functional layer 111 has a thickness of about 0.1 ⁇ m to about 2000 ⁇ m, for example, about 1 ⁇ m, 5 ⁇ m, 10 ⁇ m, 100 ⁇ m, 200 ⁇ m, 300 ⁇ m, 400 ⁇ m, 500 ⁇ m, 600 ⁇ m, 700 ⁇ m, 800 ⁇ m, 900 ⁇ m, 1000 ⁇ m, 1100 ⁇ m, 1200 ⁇ m, 1300 ⁇ m, 1400 ⁇ m, 1500 ⁇ m, 1600 ⁇ m, 1700 ⁇ m, 1800 ⁇ m, 1900 ⁇ m, 2000 ⁇ m, specifically about 1 ⁇ m to about 2000 ⁇ m. can Within the above range, it may be easy to perform the role of the above-mentioned functional layer.
  • the functional layer 111 is formed at one end 115 of the polarizer 110 in the entire thickness direction of the polarizer 110 .
  • the functional layer 111 may be formed to have a width corresponding to the first region 112 of the polarizer 110 .
  • the functional layer 111 is formed only on a portion of the polarizer 110 in the thickness direction, and may be formed as much as 100% to 120% of the maximum width of the first region in the cross section in the thickness direction of the polarizer. Within the above range, it is possible to minimize a decrease in the single transmittance of the first region at high temperature and high humidity and improve processability.
  • the functional layer 111 formed by a width of 100% to 120% of the maximum width of the first region in the cross section in the thickness direction of the polarizer may be a single layer or two layers as shown in FIG. It may be multiple layers or more. The case where the functional layer is a multi-layer will be described in detail with reference to FIG. 4 .
  • the polarizer 110 may have a thickness of 3 ⁇ m to 50 ⁇ m, specifically 3 ⁇ m to 30 ⁇ m. Within the above range, it can be used for a polarizing plate.
  • the first protective layer 120 may be laminated on the upper surface of the polarizer 110 to protect the polarizer.
  • the first protective layer 120 may be a photocurable coating layer or a protective film.
  • the photocurable coating layer may include a cured layer formed of a composition including a photocurable compound or a liquid crystal layer formed of a liquid crystalline polymer.
  • a protective film commonly used as a protective film for a polarizer may be used.
  • the protective film is a polyester-based, cyclic polyolefin-based, polycarbonate containing cellulose-based, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, etc. containing triacetyl cellulose.
  • Protective film made of at least one resin selected from the group consisting of, polyethersulfone, polysulfone, polyamide, polyimide, polyolefin, polyarylate, polyvinyl alcohol, polyvinyl chloride, and polyvinylidene chloride. may include
  • the first protective layer 120 has a water permeability of 1 x 10 1 g/m 2 ⁇ 24hr or more, specifically 1 x 10 1 g/m 2 ⁇ 24hr to 1 x 10 3 g/m 2 ⁇ It can be less than 24 hours. As described above, even when the moisture permeability of the first protective layer is high, since the polarizer includes the functional layer, the change in the single transmittance of the first region can be reduced.
  • the first protective layer 120 has a water permeability of 1 x 100 g/m 2 ⁇ 24 hr or less, specifically 1 x 10 -1 g/m 2 ⁇ 24 hr to 1 x 10 -2 g /m 2 ⁇ It can be 24hr. Within the above range, it may help to lower the change in the unit transmittance of the first region after being left at high temperature and high humidity.
  • the first protective layer 120 may have a thickness of 1 ⁇ m to 100 ⁇ m, for example, 1 ⁇ m to 20 ⁇ m. Within the above range, it can be used for a polarizing plate.
  • the first protective layer 120 is stacked extending from one end 115 of the light transmitting region 114 of the polarizer 110 so as to cover the functional layer 111 .
  • a layer providing an additional function may be further formed on the upper surface of the first protective layer 120 .
  • the layer may provide a hard coating, anti-fingerprint, anti-reflection, low reflectivity, anti-glare function, and the like.
  • the first protective layer 120 may be adhered to the polarizer 110 by an adhesive layer formed of a photocurable adhesive or a thermosetting adhesive.
  • the second protective layer 130 may be laminated on the lower surface of the polarizer to protect the polarizer.
  • the second protective layer may provide an antireflection function to the polarizing plate by having a retardation within a predetermined range.
  • the second protective layer 130 may be a single retardation layer type or a laminate in which a plurality of retardation layers are stacked.
  • the second protective layer may include a first retardation layer.
  • the first retardation layer may prevent reflection of external light by circularly polarizing the linearly polarized light emitted after the external light passes through the polarizer to improve screen quality.
  • the first retardation layer may have an in-plane retardation (Re) of 100 nm to 220 nm, specifically 100 nm to 180 nm, for example, a ⁇ /4 retardation at a wavelength of 550 nm. In the above range, it is possible to obtain an effect of improving screen quality by lowering the reflectance for external light.
  • Re in-plane retardation
  • the second protective layer may include the first retardation layer and the second retardation layer.
  • the second retardation layer may have an in-plane retardation (Re) of 225 nm to 350 nm at a wavelength of 550 nm, specifically 225 nm to 300 nm, for example, a ⁇ /2 retardation.
  • Re in-plane retardation
  • the first retardation layer and the second retardation layer may be the photocurable coating layer or the protective film described in the first protective layer, respectively.
  • the second protective layer 130 may have a thickness of 1 ⁇ m to 100 ⁇ m, for example, 1 ⁇ m to 50 ⁇ m.
  • the second protective layer 130 is stacked extending from one end 115 of the light transmitting region 114 of the polarizer 110 so as to cover the functional layer 111 .
  • an adhesive layer or an adhesive layer may be further formed on the lower surface of the second protective layer 130 .
  • the adhesive layer or the adhesive layer may laminate the polarizing plate to the panel of the optical display device, that is, the display panel.
  • the second protective layer 130 may be adhered to the polarizer by an adhesive layer formed of a photocurable adhesive or a thermosetting adhesive.
  • the polarizing plate corresponds to the first region 140 corresponding to (or including) the first region 112 of the polarizer 110 and the second region 113 of the polarizer 110 .
  • a second polarizing plate region 150 is provided (or included), and the polarizing plate may have a change in unit transmittance of Equation 2 below 5%, specifically 0% or more and less than 5%, more specifically 0% to 2% have.
  • the first polarizing plate area may perform both an image display function and an external image capturing function.
  • C is the single transmittance (unit: %) of the region of the first polarizing plate among the polarizing plates
  • D is the unit transmittance (unit: %) of the region of the first polarizing plate measured at the same wavelength as C after the polarizing plate was left at 60° C. and 95% relative humidity for 240 hours.
  • the first polarizing plate region may have substantially the same single transmittance and polarization degree as the first region.
  • the second polarizing plate region may have substantially the same single transmittance and polarization degree as the second region.
  • the polarizing plate is manufactured by a method comprising manufacturing a polarizer, and adhering a first protective layer and a second protective layer to one surface and the other surface of the polarizer, respectively, wherein the polarizer is at least one of iodine and a dichroic dye
  • a first region is formed by preparing a polyvinyl alcohol-based film dyed with a dichroic material and stretched, and a predetermined treatment is performed on a portion of the polyvinyl alcohol-based film, and a functional layer is formed at the end of the first region. It may be prepared by a method comprising the step of forming. A region in which the polyvinyl alcohol-based film is not subjected to the treatment becomes a second region.
  • Adhering the first protective layer and the second protective layer to the polarizer may be performed by a conventional method. Accordingly, a method for manufacturing a polarizer will be described in detail below.
  • the dyed and stretched polyvinyl alcohol-based film may be prepared by dyeing and stretching the polyvinyl alcohol-based film.
  • stretching in the manufacturing method of a polarizer is not restrict
  • polyvinyl alcohol-based film a conventional polyvinyl alcohol-based film used in manufacturing a conventional polarizer may be used. Specifically, a film formed of polyvinyl alcohol or a derivative thereof may be used. Polyvinyl alcohol or its derivative may have a polymerization degree of 1000 to 5000, and a saponification degree of 80 mol% to 100 mol%. The thickness of the polyvinyl alcohol-based film may be 1 ⁇ m to 30 ⁇ m, specifically 3 ⁇ m to 30 ⁇ m, and in the above range, it can be used to manufacture a thin polarizer.
  • the polyvinyl alcohol-based film may be dyed, washed, and swelled before being stretched. By washing the polyvinyl alcohol-based film with water, foreign substances adhering to the surface of the polyvinyl alcohol-based film can be removed. By swelling the polyvinyl alcohol-based film, dyeing or stretching of the polyvinyl alcohol-based film can be improved.
  • the swelling treatment may be performed by leaving the polyvinyl alcohol-based film in an aqueous solution in a swelling tank as known to those skilled in the art.
  • the temperature and swelling treatment time of the swelling tank are not particularly limited.
  • the swelling tank may further include boric acid, inorganic acid, surfactant, and the like, and their content may be adjusted.
  • the polyvinyl alcohol-based film can be dyed by dyeing the polyvinyl alcohol-based film in a dyeing tank containing at least one of iodine and a dichroic dye.
  • the polyvinyl alcohol-based film is immersed in a dyeing solution, and the dyeing solution may be an aqueous solution containing iodine and a dichroic dye.
  • iodine is provided from an iodine-based dye
  • the iodine-based dye may include one or more of potassium iodide, hydrogen iodide, lithium iodide, sodium iodide, zinc iodide, lithium iodide, aluminum iodide, lead iodide, and copper iodide.
  • the dyeing solution may be an aqueous solution containing 1 wt% to 5 wt% of at least one of iodine and a dichroic dye. Within the above range, it may have a degree of polarization within a predetermined range to be used in a display device.
  • the temperature of the dyeing tank may be 20 °C to 45 °C, and the immersion time in the dyeing tank of the polyvinyl alcohol-based film may be 10 seconds to 300 seconds. In the above range, a polarizer having a high degree of polarization may be implemented.
  • the polyvinyl alcohol-based film may have polarizing properties by aligning at least one of iodine and a dichroic dye.
  • both dry stretching and wet stretching may be used for stretching.
  • Dry stretching may be inter-roll stretching, compression stretching, hot roll stretching, and the like, and wet stretching may be performed in a wet stretching bath containing water at 35°C to 65°C.
  • the wet stretching bath may further enhance the stretching effect by further including boric acid.
  • the polyvinyl alcohol-based film may be stretched at a predetermined draw ratio, specifically, the total draw ratio may be 5 to 7 times, specifically 5.5 to 6.5 times, and cutting phenomenon of the polyvinyl alcohol-based film stretched in the above range , wrinkles, etc. can be prevented, and a polarizer with increased polarization degree and transmittance can be implemented. Stretching may be uniaxial stretching, and may be performed in single-stage stretching, but may be prevented from breaking while manufacturing a thin polarizer by performing multi-stage stretching such as 2-stage or 3-stage stretching.
  • the polyvinyl alcohol-based film is dyed and then stretched in the order of stretching, but dyeing and stretching may be performed in the same reaction tank.
  • the stretched polyvinyl alcohol-based film may be cross-linked in a crosslinking tank.
  • Crosslinking is a process of making the polyvinyl alcohol-based film more strongly dyed with at least one of iodine and dichroic dye, and boric acid may be used as the crosslinking agent.
  • boric acid may be used as the crosslinking agent.
  • a phosphoric acid compound, potassium iodide, or the like may be further included.
  • the dyed and stretched polyvinyl alcohol-based film may be treated with a complementary color in a complementary color tone.
  • Complementary color treatment involves immersing the dyed and stretched polyvinyl alcohol-based film in a complementary color tone containing a complementary color solution containing potassium iodide. Through this, by lowering the color value of the polarizer and removing the iodine anion I ⁇ in the polarizer, durability can be improved.
  • the temperature of the complementary color may be from 20 °C to 45 °C, and the immersion time for the complementary color of the polyvinyl alcohol-based film may be from 10 seconds to 300 seconds.
  • the treatment may be applied to a portion of the polyvinyl alcohol-based film to form a first region.
  • a region irradiated by irradiating a portion of the polyvinyl alcohol-based film with pulsed light by a Xenon Flash Lamp may be a first region.
  • Xenon Flash Lamp irradiates light in the form of pulses at a continuous wavelength of 200 nm to 800 nm, so when compared to conventional femtosecond or picosecond lasers, when forming an area with a lower polarization compared to before irradiation, at least one of iodine and dichroic dye in the depolarization area Damage to the dyed polyvinyl alcohol-based film can be lowered.
  • irradiating pulsed light by the Xenon Flash Lamp When irradiating pulsed light by the Xenon Flash Lamp, detailed irradiation conditions are: energy power of 300V to 500V, pulse period of 0.5Hz to 2Hz, irradiation time of 5ms (millisecond) to 15ms, and the number of irradiations is 1 to 10 it can be a meeting Within the above range, it may be helpful to obtain the first area of the present invention.
  • a mask of a desired shape is placed in close contact with the dyed and stretched polyvinyl alcohol-based film, so that portions that do not need to depolarize can be controlled to maintain the corresponding light transmittance.
  • a functional layer is formed at the end on the side where the first region is formed.
  • the functional layer may be formed by applying a composition including the organic material and the inorganic material to the end of the first surface of the polarizer using a predetermined method.
  • the functional layer may be formed by spraying, dipping (eg PVD, etc.), vapor deposition, curing including thermal curing or photo curing, coating, or the like.
  • the polarizing plate prepares a dyed and stretched polyvinyl alcohol-based film, forms a functional layer at one end of the polyvinyl alcohol-based film, and a first protective layer on one side and the other side of the polyvinyl alcohol-based film, respectively, It may be prepared by bonding the second protective layer and forming the first region by subjecting a portion of the polyvinyl alcohol-based film to a predetermined treatment. A region in which the polyvinyl alcohol-based film is not subjected to the treatment becomes a second region.
  • FIG. 3 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • the polarizing plate includes a polarizer 110 , a first protective layer 120 stacked on an upper surface of the polarizer 110 , and a second protective layer 130 stacked on a lower surface of the polarizer 110 .
  • the polarizer 110 further includes a functional layer 116 formed in the thickness direction of the polarizer at one end of the light transmitting region including the first region 112 and the second region 113 .
  • the functional layer 116 is also formed in the thickness direction of the first protective layer 120 and the second protective layer 130 .
  • the functional layer 116 is substantially the same as the polarizing plate of FIG. 1 , except that the functional layer 116 is further formed in the thickness direction of the first protective layer 120 and the second protective layer 130 .
  • the functional layer 116 is formed at one end of the polarizer, the first protective layer, and the second protective layer in the thickness direction of the polarizing plate, thereby improving the manufacturing processability of the functional layer and the polarizing plate.
  • FIG. 4 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • the polarizing plate includes a polarizer 110 , a first protective layer 120 stacked on an upper surface of the polarizer 110 , and a second protective layer 130 stacked on a lower surface of the polarizer 110 .
  • the polarizer 110 includes a functional layer 117 formed in the thickness direction of the polarizer at one end 115 of the light transmitting region having the first region 112 and the second region 113, and the functional layer Reference numeral 117 is also formed in the thickness direction of the first protective layer 120 and the second protective layer 130 , and the functional layer 117 is a multilayer. It is substantially the same as the polarizing plate of FIG. 3 except that the functional layer is multi-layered. Hereinafter, only the functional layer 117 will be described.
  • the functional layer 117 includes an organic material and an inorganic material, and is a double layer including a first functional layer 117a and a second functional layer 117b.
  • the first functional layer 117a may include an inorganic material and the second functional layer 117 may include an organic material.
  • the first functional layer 117a may include an organic material and the second functional layer 117 may include an inorganic material.
  • the manufacturing of the functional layer 117 can be facilitated.
  • the organic-based material and the inorganic-based material are substantially the same as described above, respectively.
  • first functional layer 117a in FIG. 4 is a single layer, it may be a multi-layer of two or more layers.
  • second functional layer 117b in FIG. 4 is a single layer, it may be a multilayer of two or more layers.
  • each of the first functional layer 117a and the second functional layer 117b may be the same or different, and may be 1 ⁇ m or more and less than 2000 ⁇ m, specifically, 1 ⁇ m to 100 ⁇ m. Within the above range, it may be easy to perform the role of the above-mentioned functional layer.
  • the functional layer 117 may have a thickness of 0.1 ⁇ m to 2000 ⁇ m, specifically 1 ⁇ m to 2000 ⁇ m. Within the above range, it may be easy to perform the role of the above-mentioned functional layer.
  • the first functional layer 117a and the second functional layer 117b and between one end 115 of the light transmitting region and the first functional layer 117a has a primer layer
  • the primer layer may be formed of a conventional material known to those skilled in the art, for example, an acrylic resin, an epoxy resin, a polyester resin, etc., but is not limited thereto.
  • FIG. 5 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • the polarizing plate includes a polarizer 110 , a first protective layer 120 stacked on an upper surface of the polarizer 110 , and a second protective layer 130 stacked on a lower surface of the polarizer 110 .
  • the polarizer 110 includes a functional layer 116 formed in the thickness direction of the polarizer at one end of the first surface 115 having the first region 112 and the second region 113, and the functional layer
  • An adhesive layer 160 may be further formed on one surface in the thickness direction of 116 .
  • the functional layer 116 is also formed in the thickness direction of the first protective layer 120 and the second protective layer 130 . It is substantially the same as the polarizing plate of FIG. 3 , except that the adhesive layer 160 is further formed on one surface of the functional layer 116 in the thickness direction.
  • the adhesive layer 160 may increase adhesion between the polarizer 110 and/or the first protective layer 120 and/or the second protective layer 130 and the functional layer 116 .
  • the adhesive layer 160 may be a transparent adhesive (optical clear adhesive (OCA) or optical clear resin (OCR)), but is not limited thereto.
  • the optical display device of the present invention includes the polarizing plate of the present invention.
  • the optical display device may include an organic light emitting display device, a liquid crystal display device, preferably an organic light emitting display device.
  • optical display device of the present invention will be described in more detail.
  • the organic light emitting display device includes a display panel 200 on which a base layer 201 and a plurality of light emitting devices 202 are formed, a polarizing plate 100 formed on the display panel 200 , and a polarizing plate 100 on the polarizing plate 100 . It may include a cover glass 300 formed thereon, and an image sensor 400 disposed under the display panel 200 . The display panel 200 is not penetrated for insertion of the image sensor 400 .
  • the polarizing plate 100 includes a first polarizing plate region 140 and a second polarizing plate region 150 , and includes the polarizing plate of the present invention. Both the first polarizer region 140 and the second polarizer region 150 form an image display region of the optical display device. The polarizing plate 100 is not penetrated for insertion of the image sensor 250 .
  • the light emitting device 202 is formed less densely than in the second polarizer region 150 .
  • an image display function by the image sensor 400 is also implemented and an image display function by the display panel 200 can be simultaneously performed.
  • the image sensor 400 is disposed under the first polarizer region 140 .
  • the image sensor 400 may include, but is not limited to, a camera.
  • Material of polarizer polyvinyl alcohol-based film (VF-PE3000, Kuraray, Japan, thickness: 30 ⁇ m)
  • the polyvinyl alcohol-based film washed with water was subjected to swelling treatment in a water swelling tank at 30°C.
  • the polyvinyl alcohol-based film passed through the swelling tank was treated for 30 seconds to 200 seconds in a dyeing tank at 30° C. containing an aqueous solution containing 3% by weight of potassium iodide.
  • the polyvinyl alcohol-based film passed through the dyeing tank was passed through a wet crosslinking tank containing 3 wt% of boric acid at 30°C to 60°C aqueous solution.
  • the polyvinyl alcohol-based film passed through the crosslinking tank was stretched in an aqueous solution at 50° C. to 60° C. containing 3% by weight of boric acid, and stretched so that the total draw ratio was 6 times.
  • a laminate was prepared by adhering a protective film to both sides of the prepared polyvinyl alcohol-based film using an adhesive (Z-200, Nippon Goshei).
  • the laminate was cut to a predetermined size, and pulsed light having a wavelength of 200 nm to 800 nm was irradiated with a Xenon Flash Lamp locally only to a region where the first region of the laminate was to be formed to form a first region.
  • a mixture of an organic material acrylic resin (3318LV, Henkel Co., Ltd) and an inorganic material silica (SiO 2 ) (SO-C2, Sakai Chemical Industry Co., Ltd) is applied to one end of the laminate to a predetermined thickness.
  • a polarizing plate having the cross section of FIG. 3 was manufactured by coating and manufacturing through UV curing and by depositing each material (PVD, CVD) to form a functional layer.
  • a polarizing plate having the cross section of FIG. 3 was manufactured in the same manner as in Example 1, except that the organic material and the inorganic material were changed in Example 1, or the thickness of the functional layer was changed.
  • a polarizing plate was manufactured in the same manner as in Example 1, except that a layer including an inorganic material, a primer layer, an organic material, and a layer including an inorganic material were sequentially stacked from one end of the first surface.
  • a polarizing plate was manufactured in the same manner as in Example 4, except that the inorganic material was changed in Example 4.
  • Example 1 a polarizing plate was manufactured in the same manner as in Example 1, except that a functional layer was not formed.
  • a polarizing plate was manufactured in the same manner as in Example 1, except that in Example 1, a functional layer including only an organic material and not an inorganic material was formed.
  • a polarizing plate was manufactured in the same manner as in Example 1, except that in Example 1, a functional layer including only an inorganic material and not an organic material was formed.
  • a polarizing plate was manufactured in the same manner as in Example 1, except that in Example 1, a functional layer including only an organic material and not an inorganic material was formed.
  • Moisture permeability of functional layer (unit: g/m 2 ⁇ 24hr): It is produced in the form of a film (10cm x 10cm) using organic and inorganic materials that form the functional layer, at 23°C and 99% ⁇ 100% The moisture permeability of the functional layer was indirectly evaluated by putting it into a moisture permeability measuring device (PERMATRAN-W, MODEL 700) in a relative humidity environment.
  • PERMATRAN-W, MODEL 700 moisture permeability measuring device
  • Equation 2 Measure the single transmittance of the first polarizing plate region in the same manner as in (2) for a glass plate, a polarizing plate prepared in Examples and Comparative Examples, and a specimen in which glass plates are sequentially stacked did. The specimens were left at 60° C. and 95% relative humidity for 240 hours. After standing, the single transmittance of the region of the first polarizing plate was measured in the same manner as in (2). Table 1 shows the single transmittance of the first polarizing plate area before leaving and after standing for 240 hours. Equation 2 was obtained using this.
  • Penetration length (unit: mm): As in (3), the polarizing plate was left at 60° C. and 95% relative humidity for 240 hours. The penetration length of water in the gaseous state from one end of the first surface of the polarizer was measured by an optical microscope distance measuring method, which is an analysis equipment. The penetration length may be preferably 10 mm or less.
  • the minimum distance T means T in FIG. 2 .
  • the fluorine-based organic material is EMGALT0002 (USA/TASCO).
  • the polarizing plate of the present invention has a first region having a high local transmittance, minimizes the change in the unit transmittance of the first region after leaving it at high temperature and high humidity, and after leaving it at high temperature and high humidity, A polarizing plate with a minimum penetration length of gaseous moisture toward the first region was provided. Therefore, although not shown in Table 1, it can be expected that the polarizing plate of the present invention can properly perform an image capturing function and an image display function in the first region even after being left for a long time at high temperature and high humidity.
  • Example 1 had a very low change in single transmittance.
  • the change in the color value of the first region was very small even after the time elapsed at 60° C. and 95% relative humidity.
  • Comparative Example 1 had a very high change in single transmittance.
  • the color value of the first region became substantially the same as that of the second region as the standing time at 60° C. and 95% relative humidity elapsed, and the single transmittance was expected to be restored.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Polarising Elements (AREA)

Abstract

L'invention concerne une plaque de polarisation et un appareil d'affichage optique la comprenant, la plaque de polarisation comprenant un polariseur, qui comprend une région de transmission de lumière ayant une première région et une seconde région, la première région ayant une transmittance unique plus élevée que la seconde région, la distance minimale (T) d'une extrémité de la région de transmission de lumière à la première région étant inférieure ou égale à 20 mm, le polariseur comprenant en outre, à une extrémité de la région de transmission de lumière, au moins une couche fonctionnelle formée dans la direction de l'épaisseur du polariseur, et la couche fonctionnelle comprenant un mélange d'un matériau organique et d'un matériau inorganique et/ou d'un matériau hybride organique/inorganique.
PCT/KR2022/004288 2021-03-29 2022-03-28 Plaque de polarisation et appareil d'affichage optique la comprenant WO2022211398A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280026579.1A CN117120893A (zh) 2021-03-29 2022-03-28 偏光板和包括其的光学显示装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020210040753A KR20220135120A (ko) 2021-03-29 2021-03-29 편광판 및 이를 포함하는 광학표시장치
KR10-2021-0040753 2021-03-29

Publications (1)

Publication Number Publication Date
WO2022211398A1 true WO2022211398A1 (fr) 2022-10-06

Family

ID=83456451

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2022/004288 WO2022211398A1 (fr) 2021-03-29 2022-03-28 Plaque de polarisation et appareil d'affichage optique la comprenant

Country Status (3)

Country Link
KR (1) KR20220135120A (fr)
CN (1) CN117120893A (fr)
WO (1) WO2022211398A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080013752A (ko) * 2006-08-08 2008-02-13 스미또모 가가꾸 가부시끼가이샤 편광 시트 및 편광 시트 제조 방법
KR20200015568A (ko) * 2017-06-23 2020-02-12 닛토덴코 가부시키가이샤 편광막, 해당 편광막을 포함하는 편광판, 및 해당 편광판을 포함하는 차량 탑재용 화상 표시 장치
KR20200016198A (ko) * 2017-06-23 2020-02-14 닛토덴코 가부시키가이샤 화상 표시 장치의 제조 방법 및 해당 제조 방법에 의해 얻어진 화상 표시 장치
KR20200073550A (ko) * 2018-12-14 2020-06-24 엘지디스플레이 주식회사 표시 장치
KR20200080245A (ko) * 2017-10-27 2020-07-06 스미또모 가가꾸 가부시끼가이샤 편광 필름 및 그 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080013752A (ko) * 2006-08-08 2008-02-13 스미또모 가가꾸 가부시끼가이샤 편광 시트 및 편광 시트 제조 방법
KR20200015568A (ko) * 2017-06-23 2020-02-12 닛토덴코 가부시키가이샤 편광막, 해당 편광막을 포함하는 편광판, 및 해당 편광판을 포함하는 차량 탑재용 화상 표시 장치
KR20200016198A (ko) * 2017-06-23 2020-02-14 닛토덴코 가부시키가이샤 화상 표시 장치의 제조 방법 및 해당 제조 방법에 의해 얻어진 화상 표시 장치
KR20200080245A (ko) * 2017-10-27 2020-07-06 스미또모 가가꾸 가부시끼가이샤 편광 필름 및 그 제조 방법
KR20200073550A (ko) * 2018-12-14 2020-06-24 엘지디스플레이 주식회사 표시 장치

Also Published As

Publication number Publication date
KR20220135120A (ko) 2022-10-06
CN117120893A (zh) 2023-11-24

Similar Documents

Publication Publication Date Title
WO2016003107A1 (fr) Plaque de polarisation et son procédé de préparation
WO2016056803A1 (fr) Procédé de fabrication d'une plaque de polarisation et plaque de polarisation fabriquée à l'aide de celui-ci
WO2015108261A1 (fr) Procédé de fabrication de polariseur comprenant localement une région de dépolarisation, polariseur fabriqué au moyen de ce dernier et plaque polarisante
WO2010087653A2 (fr) Élément polarisant remarquablement durable et résistant à la chaleur, plaque polarisante et dispositif d'affichage d'image, et procédé de production d'élément polarisant
WO2015147553A1 (fr) Procédé de fabrication de polariseur ayant une région localement dépolarisée, et polariseur, plaque de polarisation et dispositif d'affichage d'image fabriqués par utilisation de ce dernier
WO2010090449A2 (fr) Dispositif de polarisation, plaque de polarisation et dispositif d'affichage vidéo présentant une durabilité et une résistance à la chaleur inégalées
WO2016105017A1 (fr) Film optique et dispositif d'affichage à oled le comprenant
WO2015046969A1 (fr) Plaque polarisante munie d'une zone de dépolarisation locale et son procédé de fabrication
WO2020138878A1 (fr) Plaque de polarisation et dispositif d'affichage optique la comprenant
WO2013094969A2 (fr) Plaque polarisante et dispositif d'affichage d'image la comprenant
WO2019132242A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2014204154A1 (fr) Corps stratifié étiré, procédé de fabrication d'un polarisateur mince, polarisateur mince fabriqué par ce procédé et plaque polarisante le contenant
WO2019245145A1 (fr) Film optique, plaque de polarisation l'intégrant et dispositif d'affichage l'intégrant
WO2022211398A1 (fr) Plaque de polarisation et appareil d'affichage optique la comprenant
WO2020040568A1 (fr) Film de masque et procédé de fabrication de lame polarisante en faisant appel à celui-ci
WO2022225288A1 (fr) Polariseur, plaque polarisante le comprenant et dispositif d'affichage optique le comprenant
WO2022220442A1 (fr) Dispositif d'affichage à cristaux liquides
WO2022030929A1 (fr) Lame polarisante et dispositif d'affichage optique la comprenant
WO2016052813A1 (fr) Film optique et son procédé de fabrication
WO2015046962A1 (fr) Procédé de fabrication d'une plaque polarisante noire quasi-naturelle et plaque polarisante ainsi fabriquée
WO2022169260A1 (fr) Plaque de polarisation et dispositif d'affichage optique la comprenant
WO2021177621A1 (fr) Plaque de polarisation pour dispositif d'affichage électroluminescent, et dispositif d'affichage électroluminescent la comprenant
WO2020130462A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2020138879A1 (fr) Plaque polarisante et dispositif d'affichage à cristaux liquides la comprenant
WO2014200296A1 (fr) Procédé permettant de fabriquer une plaque de polarisation et comprenant une étape consistant à commander la couleur du polariseur par un rayonnement ultraviolet

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22781517

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22781517

Country of ref document: EP

Kind code of ref document: A1