WO2020062577A1 - Polariseur et dispositif d'affichage - Google Patents

Polariseur et dispositif d'affichage Download PDF

Info

Publication number
WO2020062577A1
WO2020062577A1 PCT/CN2018/119505 CN2018119505W WO2020062577A1 WO 2020062577 A1 WO2020062577 A1 WO 2020062577A1 CN 2018119505 W CN2018119505 W CN 2018119505W WO 2020062577 A1 WO2020062577 A1 WO 2020062577A1
Authority
WO
WIPO (PCT)
Prior art keywords
prism
layer
prism portions
film layer
plate
Prior art date
Application number
PCT/CN2018/119505
Other languages
English (en)
Chinese (zh)
Inventor
康志聪
Original Assignee
惠科股份有限公司
重庆惠科金渝光电科技有限公司
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 惠科股份有限公司, 重庆惠科金渝光电科技有限公司 filed Critical 惠科股份有限公司
Publication of WO2020062577A1 publication Critical patent/WO2020062577A1/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
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one

Definitions

  • the present application relates to the field of display technology, and in particular, to a polarizer and a display device.
  • Exemplary large-size display panels include an LCD (Liquid Crystal Display) panel and an OLED (Organic Light-Emitting Diode) panel, etc., where the LCD panel includes a VA (Vertical Vertical Alignment) liquid crystal panel and IPS (In-Plane Switching) LCD panels, etc.
  • VA LCD panels have the advantages of higher production efficiency and lower manufacturing costs, but they are more obvious in optical properties than IPS LCD panels. Defective optical properties, especially for large-size panels that require large viewing angles for commercial applications.
  • VA-type LCD panels quickly saturate the brightness at large viewing angles with voltage, which causes the viewing angle image quality contrast and color shift to deteriorate more seriously than the front-view image quality. There is a problem of color cast.
  • the VA liquid crystal technology solves the problem of viewing role deviation by subdividing R (Red, Red), G (Green, Green), and B (Blue, Blue) sub-pixels into primary and secondary pixels, so that the overall large viewing angle brightness changes with voltage. It is closer to the front view.
  • This method of providing different driving voltages to solve the defect of viewing role deviation is given by the primary and secondary pixels in space. It is often necessary to redesign metal traces or switching elements to drive the sub-pixels, causing sacrifices in the light-transmissive opening area. Affects panel penetration.
  • the present application provides a polarizer capable of improving viewing role polarization and having better panel transmittance.
  • a display device is provided.
  • a polarizer includes:
  • the protective layer is a layer of the protective layer
  • a polarizing layer is laminated on a side of the plate-like portion remote from the prism portion.
  • a polarizer includes:
  • the protective layer is a layer of the protective layer
  • a polarizing layer is laminated on a side of the plate-like portion remote from the prism portion.
  • a display device includes a backlight source, a display panel, and the above-mentioned polarizer, wherein the display panel is located on one side of the backlight source, and the polarizer is located between the display panel and the backlight source; or The polarizer is located on a side of the display panel away from the backlight.
  • FIG. 1 is a schematic structural diagram of a display device according to an embodiment
  • FIG. 2 is a schematic structural diagram of a backlight source of the display device shown in FIG. 1;
  • FIG. 3 is a schematic structural diagram of a polarizer of the display device shown in FIG. 1;
  • FIG. 4 is a schematic structural diagram of a single optical axis optical film layer of the polarizer shown in FIG. 3;
  • FIG. 5 is a schematic structural view of the single optical axis optical film layer of FIG. 4 at another angle;
  • FIG. 6 is a schematic structural view of the single optical axis optical film layer of FIG. 4 at another angle;
  • FIG. 7 is a schematic structural diagram of a single optical axis optical film layer of another embodiment of the polarizer shown in FIG. 3;
  • FIG. 8 is a schematic structural view of the single optical axis optical film layer of FIG. 7 at another angle;
  • FIG. 9 is a schematic structural view of the single optical axis optical film layer of FIG. 7 at another angle;
  • FIG. 10 is a schematic structural diagram of a single optical axis optical film layer and a protective layer of the polarizer shown in FIG. 3;
  • FIG. 11 is a schematic structural diagram of an upper polarizer of the display device shown in FIG. 1.
  • a display device 10 includes an LCD display panel, an OLED display panel, and the like.
  • the LCD display panel includes a VA liquid crystal panel and an IPS liquid crystal panel.
  • the display device 10 is a VA liquid crystal panel.
  • the display device 10 includes a backlight 100, a polarizer 200, a display panel 300, and a polarizer 400.
  • the backlight source 100 is a collimated backlight light source (BL), so that the energy of the light is concentrated and output at a positive viewing angle.
  • BL backlight light source
  • the backlight 100 includes a reflection sheet 110, a light guide plate 120, a prism film 130, and an LED light source 140.
  • the reflection sheet 110, the light guide plate 120, and the prism film 130 are stacked in this order.
  • the light guide plate 120 has The light incident surface 121, the LED light source 140 is opposite to the light incident surface 121, and a side of the light guide plate 120 near the reflective sheet 110 is provided with a first groove 122 in a strip shape.
  • the cross section of the first groove 122 is V-shaped.
  • the extending direction of the groove 122 is perpendicular to the light emitting direction of the LED light source 140.
  • a side of the light guide plate 120 near the prism film 130 is provided with a strip-shaped second groove 123.
  • the cross-section of the second groove 123 is V-shaped and the second concave
  • the extending direction of the groove 123 is parallel to the light emitting direction of the LED light source 140.
  • the prism side of the prism film 130 is laminated on the light guide plate 120.
  • the polarizer 200 includes a protective layer 210, a single optical axis optical film layer 220, a polarizing layer 230, a first compensation film layer 240, and a first pressure-sensitive adhesive layer 250.
  • the protective layer 210 is a transparent layer and mainly plays a supporting and protecting role.
  • the protective layer 210 is an organic material layer.
  • the organic layer is selected from one of a polyethylene terephthalate (PET) layer, a cellulose triacetate layer (TAC), and a polymethyl methacrylate (PMMA) layer.
  • PET polyethylene terephthalate
  • TAC cellulose triacetate layer
  • PMMA polymethyl methacrylate
  • PET polyethylene terephthalate
  • PET polyethylene terephthalate
  • TAC cellulose triacetate layer
  • PMMA polymethyl methacrylate
  • the single optical axis optical film layer 220 has optical anisotropy, and light passing through the single optical axis optical film layer 220 may cause a birefringence phenomenon.
  • the light entering the single-optical axis optical film layer 220 can be equivalent to two beams whose vibration directions are perpendicular to each other.
  • the light perpendicular to the optical axis of the single-optical axis optical film layer is called ordinary light, referred to as O light;
  • Light rays whose optical axes are parallel to the optical axis of the optical film layer are called extraordinary rays, or E rays for short.
  • the extraordinary light refractive index (ne) is an equivalent refractive index of the optical axis of the single optical axis optical film layer 220 parallel to the electric field vibration direction; the ordinary light refractive index (no) is a single optical axis optical film layer.
  • the equivalent refractive index of the optical axis of 220 is perpendicular to the direction of electric field vibration.
  • the extraordinary light refractive index of the single-optical-axis optical film layer 220 is 1.0 to 2.5, so as to distribute the energy of the front-view light to a large viewing angle.
  • the extraordinary optical refractive index of the single optical axis optical film layer 220 is greater than the refractive index of the protective layer 210, and the difference between the extraordinary optical refractive index of the single optical axis optical film layer 220 and the refractive index of the protective layer 210 It is 0.01 to 1.5.
  • the material of the single optical axis optical film layer 220 is a nematic liquid crystal molecular material.
  • the single optical axis optical film layer 220 is disposed on the protective layer 210. Specifically, the single optical axis optical film layer 220 includes a plate-like portion 221 and a plurality of prism portions 222.
  • the plate-like portion 221 is laminated on the protective layer 210.
  • a plurality of prism portions 222 are formed on one side of the plate-shaped portion 221 and are disposed at intervals.
  • the plurality of prism portions 222 are housed in the protective layer 210.
  • a plurality of prism portions 222 are located on the plate-shaped portion 221 near the protective layer 210.
  • each of the plurality of prism portions 222 is a triangular prism structure or a triangular pyramid structure.
  • each prism portion 222 has a triangular prism structure
  • one side surface of each prism portion 222 is in contact with the plate-shaped portion 221.
  • a plurality of prism portions 222 are arranged in parallel, and a distance between two adjacent side edges of the prism portion 222 away from the plate-shaped portion 221 is greater than or equal to two of the prism portion 222 near the plate-shaped portion 221.
  • the distance between the edges For example, please refer to FIG. 5 and FIG. 6 together.
  • the distance (Px1) between the side edges of two adjacent prism portions 222 away from the plate-shaped portion 221 is greater than or equal to two of the prism portion 222 near the plate-shaped portion 221.
  • the distance (Lx1) between the side edges; D + d is the maximum thickness of the single optical axis optical film layer 220.
  • the optical axis direction (long axis direction) of the liquid crystal in the single-optical-axis optical film layer 220 is parallel to the light emitting surface or the light incident surface, which may be parallel to the arrangement direction of the plurality of prism portions 222 and perpendicular to each prism portion 222.
  • the extending direction of the prisms may be perpendicular to the arrangement direction of the plurality of prism portions 222 and parallel to the extending direction of each prism portion 222.
  • the transmissive polarization direction of the apparent polarizing layer 230 determines the extraordinary light direction refractive index (ne) and the ordinary light direction refractive index (no).
  • the optical axis direction (long axis direction) of the liquid crystal in the single optical axis optical film layer 220 is parallel to the transmission axis direction of the polarizing layer 230, and the optical axis direction (long axis direction) of the liquid crystal in the single optical axis optical film layer 220 is perpendicular.
  • each of the plurality of prism portions 222 has a regular triangular prism structure.
  • each prism portion 222 when the plurality of prism portions 222 have a triangular pyramid structure, one bottom surface of each prism portion 222 is in contact with the plate-shaped portion 221.
  • the plurality of prism portions 222 are arranged in a two-dimensional matrix to more effectively distribute the light energy of the positive viewing angle to the two-dimensional direction, so that the viewing angle of the display device 10 is more uniform.
  • FIGS. 7 to 9 please refer to FIGS. 7 to 9 together.
  • Each prism portion 222 has a vertex opposite to the bottom surface, passes through a line between the vertices of two adjacent prism portions 222, and is perpendicular to the two adjacent prism portions.
  • each of the plurality of prism portions 222 is a regular triangular pyramid structure.
  • the polarizing layer 230 is laminated on the plate-like portion 221 side away from the prism portion 222. Among them, the polarizing layer 230 has the functions of absorbing and transmitting polarized light, and the light intensity can be adjusted with the driving of liquid crystal molecules.
  • the protective layer 210 can support and protect the polarizing layer 230.
  • the polarizing layer 230 is a polyvinyl alcohol (PVA) layer.
  • the protective layer 210 and the single optical axis optical film layer 220 form a flat optical film.
  • the protective layer 210 and the single optical axis optical film layer 220 must maintain a certain thickness to ensure the weatherability of the polarizing layer 230, prevent the polarizing layer 230 from contacting the external environment, and prevent moisture from affecting the polarizing layer 230.
  • the extraordinary refractive index (ne) and the ordinary refractive index (no) of the single optical axis optical film layer 220 can be selected.
  • the thickness direction (perpendicular to the light exit surface) is parallel to the Z-axis direction.
  • the refractive index of the axial optical film layer 220 is n
  • the principle of allocating light energy from a normal viewing angle to a large viewing angle is: light propagates from an optically sparse medium to a light dense medium, that is, light propagates from the protective layer 210 to the single optical axis optical film layer 220, Due to the difference in refractive index, the phenomenon of refraction or diffusion occurs.
  • the traveling direction of light and the protective layer 210 and The non-vertical light at the interface of the single optical axis optical film layer 220 allows the light energy of the normal viewing angle to be distributed to the side viewing angle, so that the side viewing angle can watch the image quality presentation of the positive viewing angle.
  • the first compensation film layer 240 is laminated on the polarizing layer 230 side away from the single optical axis optical film layer 220. Among them, the first compensation film layer 240 has birefringence, can compensate the polarized light output of the liquid crystal molecules at a large viewing angle, and can also support and protect the polarization layer 230.
  • a first pressure-sensitive adhesive layer 250 is laminated on a side of the first compensation film layer 240 away from the polarizing layer 230.
  • the polarizer 200 is not limited to the above structure, and the first compensation film layer 240 and the first pressure-sensitive adhesive layer 250 layers may be provided as required, and the two may be omitted.
  • the polarizing layer 230 of the polarizer 200 has the function of absorbing and penetrating polarized light.
  • the light entering the polarizer 200 can be divided into horizontal polarization
  • the transmission axis of the polarizer 200 is parallel to the arrangement direction (0 ° or 180 °) of the plurality of prism portions 222, the absorption axis is parallel to the extension direction of each prism portion 222 (90 ° or 270 °)
  • the light of the horizontal polarization component passes through the protective layer 210, and the equivalent refractive index of the light of the horizontal polarization component corresponding to the protection layer 210 is
  • the refractive index of light is ne, so the horizontally polarized light enters the light-dense medium (ne> n) at the interface between the two media.
  • the interface formed by the light-dense medium and the light-dense medium is not perpendicular to the direction of light advancement. Light passes through this interface to produce a refraction effect, which makes the front view type The amount allocated large viewing angle.
  • the transmission axis of the polarizer 200 is parallel to the extension direction (90 ° or 270 °) of each prism portion 222, and the absorption axis is parallel to the arrangement direction (0 ° or 180 °) of the plurality of prism portions 222.
  • the light passes through the protective layer 210, and the equivalent refractive index of the light of the vertically polarized component corresponding to the protective layer 210 is n, and then passes through the single optical axis optical film layer 220.
  • the extraordinary optical refractive index of the single optical axis optical film layer 220 is ne, so that the horizontally polarized light enters the optically dense medium (ne> n) at the interface between the two media.
  • the interface between the optically dense medium and the optically dense medium that is not perpendicular to the forward direction of the light passes through the interface.
  • the surface produces a refraction effect, and the light energy of the normal viewing angle distributes a large viewing angle.
  • the display panel 300 is laminated on a side of the polarizer 200 remote from the backlight 100. In one embodiment, the display panel 300 is laminated on a side of the first pressure-sensitive adhesive layer 250 away from the first compensation film layer 240. Specifically, the display panel 300 is a liquid crystal display panel.
  • the polarizing plate 400 is laminated on the liquid crystal panel 300 side away from the polarizer 200. Please refer to FIG. 11 together. Specifically, the polarizing plate 400 includes a second pressure-sensitive adhesive layer 410, a second compensation film layer 420, a polarizing layer 430, a protective layer 440, an optical film layer 450, and an anti-glare low-reflection layer, which are sequentially stacked. 460.
  • the materials and functions of the second pressure-sensitive adhesive layer 410 and the first pressure-sensitive adhesive layer 250 are approximately the same; the materials and functions of the second compensation film layer 420 and the first compensation film layer 240 are approximately the same; the polarizing layer 430 and the polarizing layer The materials and functions of 230 are approximately the same; the functions of the protective layer 440 and the protective layer 210 are approximately the same, and the material of the protective layer 440 is an organic layer.
  • the organic layer is selected from one of a polyethylene terephthalate (PET) layer, a cellulose triacetate (TAC) layer, and a polymethyl methacrylate (PMMA) layer; an optical film layer 450 can select the corresponding film according to the required function; the role of the anti-glare low-reflection layer 460 is to prevent glare and reduce the reflection of light to reduce the energy loss of light.
  • PET polyethylene terephthalate
  • TAC cellulose triacetate
  • PMMA polymethyl methacrylate
  • the display device 10 is not limited to the above structure, and the polarizing plate 400 in the display device 10 may also be a polarizer 200, that is, the polarizer 200 may also be used as an upper polarizer, and is located on a display panel 300 away from the backlight 100 side.
  • the above display device 10 has at least the following advantages:
  • the above-mentioned polarizer 200 is provided with a single optical axis optical film layer 220 between the protective layer 210 and the polarizing layer 230, and an extraordinary optical refractive index of the single optical axis optical film layer 220 is greater than that of the protective layer 210.
  • 210 propagates to the single optical axis optical film layer 220. Refraction or diffusion phenomenon may occur due to the difference in refractive index.
  • multiple prism parts of the single optical axis optical film layer 220 are selected from one of a triangular prism structure and a triangular pyramid structure.
  • the light traveling in a direction that is not perpendicular to the interface between the protective layer 210 and the single optical axis optical film layer 220 allows the light energy of the positive angle of view to be distributed to the side angle of view, so that the side angle of view can view the image quality of the positive angle of view and solve the display
  • the large viewing role of the device 10 is biased; at the same time, the display panel 300 does not need to divide the RGB sub-pixels into a primary pixel and a sub-pixel structure, and avoids designing metal traces or switching elements to drive the sub-pixels, resulting in a light-transmissive opening Area sacrifices, affecting panel penetration. Therefore, the above-mentioned polarizer 200 can not only improve the viewing role polarization, but also has a better panel transmittance.

Landscapes

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

Abstract

L'invention concerne un polariseur (200), comprenant une couche de protection (210), une couche de film optique à axe optique unique (220), et une couche de polarisation (230), la couche de film optique à axe optique unique étant disposée sur la couche de protection, l'indice de réfraction d'un rayon extraordinaire de la couche de film optique à axe optique unique étant supérieur à l'indice de réfraction de la couche de protection ; la couche de film optique à axe optique unique comprend une partie en forme de plaque (221) et une pluralité de parties de prisme (222) formées sur un côté de la partie en forme de plaque et espacées l'une de l'autre, la pluralité de parties de prisme étant logée dans la couche de protection, la pluralité de parties de prisme étant sélectionnée parmi une structure de prisme triangulaire et une structure de pyramide triangulaire ; la couche de polarisation est stratifiée sur un côté de la partie en forme de plaque loin des parties de prisme.
PCT/CN2018/119505 2018-09-30 2018-12-06 Polariseur et dispositif d'affichage WO2020062577A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811160422.XA CN109188591A (zh) 2018-09-30 2018-09-30 偏光片和显示装置
CN201811160422.X 2018-09-30

Publications (1)

Publication Number Publication Date
WO2020062577A1 true WO2020062577A1 (fr) 2020-04-02

Family

ID=64946529

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/119505 WO2020062577A1 (fr) 2018-09-30 2018-12-06 Polariseur et dispositif d'affichage

Country Status (2)

Country Link
CN (1) CN109188591A (fr)
WO (1) WO2020062577A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109633986A (zh) * 2019-01-30 2019-04-16 惠科股份有限公司 光学膜层和显示装置
CN109597239A (zh) * 2019-01-30 2019-04-09 惠科股份有限公司 光学膜层和显示装置
CN109597238B (zh) * 2019-01-30 2020-11-13 惠科股份有限公司 光学膜层和显示装置
CN111679500A (zh) * 2020-06-22 2020-09-18 深圳市隆利科技股份有限公司 一种提升显示亮度的侧入式背光模组及液晶显示设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101176021A (zh) * 2005-04-08 2008-05-07 3M创新有限公司 用于显示器中的结构化取向薄膜
CN101573643A (zh) * 2006-12-27 2009-11-04 帝人株式会社 偏振元件和液晶显示装置
CN101858997A (zh) * 2009-04-02 2010-10-13 索尼公司 光学片、光学片制造方法、面发光装置以及液晶显示装置
CN102667541A (zh) * 2009-12-25 2012-09-12 三井化学株式会社 偏光性扩散膜及其制造方法以及包含偏光性扩散膜的液晶显示装置
JP2012237822A (ja) * 2011-05-10 2012-12-06 Mitsui Chemicals Inc 偏光性拡散フィルム、偏光性拡散フィルムの製造方法、および偏光性拡散フィルムを含む液晶表示装置
CN102866452A (zh) * 2011-07-05 2013-01-09 松下电器产业株式会社 导光板和面光源装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6067137A (en) * 1995-08-25 2000-05-23 Kuraray Co., Ltd. Image display apparatus with hydrophobic diffraction grating for an enlarged viewing angle
US7499126B2 (en) * 2005-08-08 2009-03-03 Samsung Electronics Co., Ltd. Polarizing film and display device having the same
KR101616918B1 (ko) * 2013-05-31 2016-04-29 제일모직주식회사 색 변화 저감용 광학 필름 및 이를 채용한 유기 발광 표시 장치

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101176021A (zh) * 2005-04-08 2008-05-07 3M创新有限公司 用于显示器中的结构化取向薄膜
CN101573643A (zh) * 2006-12-27 2009-11-04 帝人株式会社 偏振元件和液晶显示装置
CN101858997A (zh) * 2009-04-02 2010-10-13 索尼公司 光学片、光学片制造方法、面发光装置以及液晶显示装置
CN102667541A (zh) * 2009-12-25 2012-09-12 三井化学株式会社 偏光性扩散膜及其制造方法以及包含偏光性扩散膜的液晶显示装置
JP2012237822A (ja) * 2011-05-10 2012-12-06 Mitsui Chemicals Inc 偏光性拡散フィルム、偏光性拡散フィルムの製造方法、および偏光性拡散フィルムを含む液晶表示装置
CN102866452A (zh) * 2011-07-05 2013-01-09 松下电器产业株式会社 导光板和面光源装置

Also Published As

Publication number Publication date
CN109188591A (zh) 2019-01-11

Similar Documents

Publication Publication Date Title
WO2020087620A1 (fr) Film composite optique, écran d'affichage et dispositif d'affichage
WO2020062585A1 (fr) Polariseur et dispositif d'affichage
WO2020062577A1 (fr) Polariseur et dispositif d'affichage
WO2020062584A1 (fr) Structure de polarisation et dispositif d'affichage
US11209694B2 (en) Polarizing structure and display device
WO2020087638A1 (fr) Film composite optique, écran d'affichage et dispositif d'affichage
WO2020087635A1 (fr) Film composite optique, écran d'affichage et dispositif d'affichage
WO2020087624A1 (fr) Film optique composite, panneau d'affichage, et dispositif d'affichage
WO2020087625A1 (fr) Film composite optique, écran d'affichage et dispositif d'affichage
WO2020062593A1 (fr) Structure de polarisation et dispositif d'affichage
WO2020087634A1 (fr) Couche de film composite optique, panneau d'affichage et dispositif d'affichage
WO2020062591A1 (fr) Plaque de polarisation et dispositif d'affichage
WO2020062603A1 (fr) Structure de polarisation et dispositif d'affichage
US20140009960A1 (en) Backlight device
WO2020062587A1 (fr) Plaque de polarisation et dispositif d'affichage
WO2020155206A1 (fr) Couche de film optique et dispositif d'affichage
WO2020087632A1 (fr) Film composite optique, panneau d'affichage et dispositif d'affichage
WO2020062600A1 (fr) Structure de polarisation et dispositif d'affichage
WO2020155279A1 (fr) Couche de film optique et dispositif d'affichage
WO2020087630A1 (fr) Film composite optique, écran d'affichage et dispositif d'affichage
WO2020155281A1 (fr) Couche de film optique et dispositif d'affichage
WO2020062578A1 (fr) Structure de polariseur et dispositif d'affichage
WO2020062558A1 (fr) Structure de polarisation et dispositif d'affichage
WO2020155271A1 (fr) Couche de film optique et dispositif d'affichage
WO2020155280A1 (fr) Couche de film optique et dispositif d'affichage

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: 18935133

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 14/07/2021)

122 Ep: pct application non-entry in european phase

Ref document number: 18935133

Country of ref document: EP

Kind code of ref document: A1