[go: up one dir, main page]

WO2025175419A1 - Dispositif d'affichage à miroir et système d'affichage - Google Patents

Dispositif d'affichage à miroir et système d'affichage

Info

Publication number
WO2025175419A1
WO2025175419A1 PCT/CN2024/077556 CN2024077556W WO2025175419A1 WO 2025175419 A1 WO2025175419 A1 WO 2025175419A1 CN 2024077556 W CN2024077556 W CN 2024077556W WO 2025175419 A1 WO2025175419 A1 WO 2025175419A1
Authority
WO
WIPO (PCT)
Prior art keywords
display
layers
viewer
partial mirror
display system
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/CN2024/077556
Other languages
English (en)
Inventor
Wei Gang XUE
Fan Long
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to PCT/CN2024/077556 priority Critical patent/WO2025175419A1/fr
Publication of WO2025175419A1 publication Critical patent/WO2025175419A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
    • G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only

Definitions

  • the present disclosure relates to a display system and a mirror display.
  • the present disclosure provides a display system.
  • the display system includes a display configured to form a polarized image for viewing by a viewer.
  • the polarized image has a first polarization state.
  • the display system further includes a partial mirror disposed on the display.
  • the display system includes a reflective polarizer disposed between the display and the partial mirror.
  • the partial mirror For a substantially normally incident light having at least a first visible wavelength in a visible wavelength range extending from about 420 nanometers (nm) to about 680 nm, the partial mirror reflects at least 30%and transmits at least 30%of the incident light for each of the first polarization state and an orthogonal second polarization state.
  • the reflective polarizer transmits at least 60%of the incident light for the first polarization state and reflects at least 60%of the incident light for the second polarization state.
  • FIG. 1 shows a schematic sectional view of a display system, according to an embodiment of the present disclosure
  • FIG. 2 shows a schematic detailed sectional view of a partial mirror of the display system, according to an embodiment of the present disclosure
  • FIG. 3 shows a schematic detailed sectional view of a reflective polarizer of the display system, according to an embodiment of the present disclosure
  • FIG. 4 shows a schematic view of a display system, according to another embodiment of the present disclosure.
  • FIG. 5 shows a schematic view of a display system, according to another embodiment of the present disclosure.
  • substantially means to a high degree of approximation (e.g., within +/-10%for quantifiable properties) but again without requiring absolute precision or a perfect match.
  • first and second are used as identifiers. Therefore, such terms should not be construed as limiting of this disclosure.
  • the terms “first” and “second” when used in conjunction with a feature or an element can be interchanged throughout the embodiments of this disclosure.
  • the term “layer” generally refers to a thickness of material within a film that has a relatively consistent chemical composition. Layers may be of any type of material including polymeric, cellulosic, metallic, or a blend thereof. A given polymeric layer may include a single polymer-type or a blend of polymers and may be accompanied by additives. A given layer may be combined or connected to other layers to form films. A layer may be either partially or fully continuous as compared to adjacent layers or the film. A given layer may be partially or fully coextensive with adjacent layers. A layer may contain sub-layers.
  • mirror displays are being in use to display basic information such as date, time, weather in public places like restaurants, railway stations, public washrooms and so on.
  • the mirror displays are in more demand due to high potential of implementations in a smart home ecosystem.
  • the mirror displays have many benefits, there may be issues with current mirror displays.
  • the current mirror displays may provide either a good quality mirror performance or a good quality display performance.
  • the present disclosure relates to a display system.
  • the display system includes a display configured to form a polarized image for viewing by a viewer.
  • the polarized image has a first polarization state.
  • the display system further includes a partial mirror disposed on the display.
  • the display system includes a reflective polarizer disposed between the display and the partial mirror.
  • the partial mirror For a substantially normally incident light having at least a first visible wavelength in a visible wavelength range extending from about 420 nm to about 680 nm, the partial mirror reflects at least 30%and transmits at least 30%of the incident light for each of the first polarization state and an orthogonal second polarization state.
  • the reflective polarizer transmits at least 60%of the incident light for the first polarization state and reflects at least 60%of the incident light for the second polarization state.
  • the reflective polarizer may additionally reflect, toward the viewer, at least a portion of light (i.e., the portion of light having the second polarization state) from the viewer transmitted by the partial mirror while substantially transmitting light from the display having the first polarization state. This may increase a brightness of a viewer image of the viewer which is reflected by the partial mirror toward the viewer. Therefore, the reflective polarizer may enhance the brightness of the display system without negatively affecting transmission of light from the display. In other words, the display system of the present disclosure may provide a high mirror performance, but also a high quality display performance.
  • the display system may not require a high performance reflective polarizer having a high reflective performance (e.g., greater than about 99%) for one polarization state to enhance the brightness of the display system.
  • a high performance reflective polarizer may be expensive.
  • using such high performance reflective polarizers may sometimes lead to unwanted optical artifacts, such as an orange skin effect.
  • the display system of the present disclosure may be relatively cheaper than a conventional display system which includes only the high performance reflective polarizer and may further reduce a likelihood of the optical artifacts.
  • the reflective polarizer of the display system of the present disclosure may enhance the brightness of the display system, the display system may not require providing additional power to the display to obtain a high luminance performance which may otherwise cause high thermal issues and damage to the display.
  • FIG. 1 is a schematic sectional view of a display system 300, according to an embodiment of the present disclosure.
  • the display system 300 may be interchangeably referred to as “the mirror display 300” .
  • the mirror display 300 may be implemented at public places to display information such as date, time, weather, etc.
  • the mirror display 300 may be implemented in smart home devices, such as smart refrigerators and smart mirrors in wash rooms, dressing rooms and bed rooms, etc.
  • the mirror display 300 may be implemented in makeup mirrors and fitness mirrors.
  • the mirror display 300 may display a makeup performance, an exercise performance, or a feedback on a health status for a viewer 310.
  • the display system 300 defines mutually orthogonal x, y, and z-axes.
  • the x and y-axes are in-plane axes of the display system 300, while the z-axis is a transverse axis disposed along a thickness of the display system 300.
  • the x and y-axes are disposed along a plane of the display system 300, while the z-axis is perpendicular to the plane of the display system 300.
  • the display system 300 includes a display 10 configured to form a polarized image 11 for viewing by the viewer 310.
  • the polarized image 11 has a first polarization state.
  • the first polarization state extends along the x-axis and corresponds to a p-polarization state.
  • the display 10 includes one or more of a light emitting diode display (LED) , an organic light emitting diode display (OLED) , a liquid crystal display (LCD) , and an electroluminescent display (EL) .
  • the LCD may include a thin film transistor (TFT) LCD panel.
  • the display system 300 further includes a partial mirror 20 disposed on the display 10.
  • the partial mirror 20 includes a metal.
  • the metal includes one or more of aluminum and silver.
  • the partial mirror 20 includes a micro-structured front surface 24 configured to face the viewer 310.
  • the partial mirror 20 is coated on a substrate 60.
  • the substrate 60 includes one or more of glass and plastic.
  • the display system 300 further includes a reflective polarizer 30 disposed between the display 10 and the partial mirror 20.
  • the micro-structured front surface 24 further may reduce an unwanted optical artifact, such as an orange skin effect that may be otherwise caused due to the reflective polarizer 30.
  • a first bonding layer 40 bonds the partial mirror 20 to the reflective polarizer 30.
  • a second bonding layer 41 bonds the display 10 to the reflective polarizer 30.
  • the reflective polarizer 30 is fully laminated onto the display 10 (i.e., via the second bonding layer 41) .
  • FIG. 2 is a schematic detailed sectional view of the partial mirror 20 of the display system 300 shown in FIG. 1, according to an embodiment of the present disclosure.
  • the partial mirror 20 includes a plurality of first layers 21, 22 numbering at least 4 in total. In some embodiments, the plurality of first layers 21, 22 numbers at least 10, at least 20, at least 50, at least 75, at least 100, at least 150, at least 200, at least 250, or at least 300 in total.
  • each of the first layers 21, 22 has an average thickness t1 of less than about 500 nanometers (nm) .
  • the term “average thickness t1” refers to the average thicknesses t1 measured at multiple points across a plane (i.e., the x-y plane) of each of the plurality of first layers 21, 22.
  • each of the first layers 21, 22 has the average thickness t1 of less than about 400 nm, less than about 300 nm, or less than about 200 nm.
  • At least some of the first layers 21, 22 in the plurality of first layers 21, 22 are dielectric. In some embodiments, at least some of the first layers 21, 22 in the plurality of first layers 21, 22 are polymeric.
  • the plurality of first layers 21, 22 includes a plurality of alternating first A and first B layers 21, 22. Furthermore, in some embodiments, the first A layers 21 have a different composition than the first B layers 22.
  • the at least one skin layer 23 includes a pair of skin layers 23, and the plurality of first layers 21, 22 disposed between the pair of skin layers 23.
  • the at least one skin layer 23 may protect the plurality of first layers 21, 22 and may also provide mechanical stability to the partial mirror 20.
  • the at least one skin layer 23 may act as protective boundary layer (PBL) .
  • FIG. 2 further illustrates a substantially normally incident light 45 having at least a first visible wavelength in a visible wavelength range extending from about 420 nm to about 680 nm incident on the partial mirror 20.
  • the partial mirror 20 reflects at least 30%and transmits at least 30%of the incident light 45 for each of the first polarization state and an orthogonal second polarization state.
  • the orthogonal second polarization state extends along the y-axis and corresponds to an s-polarization state.
  • the partial mirror 20 is sufficiently optically transmissive so that the viewer 310 is able to view the polarized image 11 through the partial mirror 20 and sufficiently optically reflective so that the viewer 310 is able to view a viewer image (not shown) of the viewer 310 reflected by the partial mirror 20 toward the viewer 310.
  • FIG. 3 shows a schematic detailed sectional view of the reflective polarizer 30 of the display system 300 shown in FIG. 1, according to an embodiment of the present disclosure.
  • the reflective polarizer 30 includes a plurality of second layers 31, 32 numbering at least 10 in total. In some embodiments, the plurality of second layers 31, 32 numbers at least 20, at least 50, at least 75, at least 100, at least 150, at least 200, at least 250, or at least 300 in total.
  • each of the second layers 31, 32 has an average thickness t2 of less than about 500 nm.
  • the term “average thickness t2” refers to the average thicknesses t2 measured at multiple points across a plane (i.e., the x-y plane) of each of the plurality of second layers 31, 32.
  • each of the second layers 31, 32 has the average thickness t2 of less than about 400 nm, less than about 300, or less than about 200 nm.
  • At least some of the second layers 31, 32 in the plurality of second layers 31, 32 are dielectric. In some embodiments, at least some of the second layers 31, 32 in the plurality of second layers 31, 32 are polymeric.
  • the plurality of second layers 31, 32 includes a plurality of alternating second A and second B layers 31, 32. Furthermore, in some embodiments, the second A layers 31 have a different composition than the second B layers 32.
  • the reflective polarizer 30 further includes at least one skin layer 33 disposed on the plurality of second layers 31, 32.
  • the at least one skin layer 33 has an average thickness st2 of greater than about 500 nm.
  • the term “average thickness st2” refers to the average thicknesses st2 measured at multiple points across a plane (i.e., the x-y plane) of the at least one skin layer 33 disposed on the plurality of second layers 31, 32.
  • the at least one skin layer 33 has the average thickness st2 of greater than about 750 nm, greater than about 1000 nm, greater than about 1500 nm, or greater than about 2000 nm.
  • FIG. 3 further illustrates the substantially normally incident light 45 having at least the first visible wavelength in the visible wavelength range incident on the reflective polarizer 30.
  • the reflective polarizer 30 transmits at least 60%of the incident light 45 for the first polarization state and reflects at least 60%of the incident light 45 for the second polarization state.
  • the reflective polarizer 30 transmits at least 70%, at least 80%, or at least 90%of the incident light 45 for the first polarization state and reflects at least 70%, at least 80%, or at least 90%of the incident light 45 for the second polarization state.
  • the reflective polarizer 30 may additionally reflect, toward the viewer 310, at least a portion of the light from the viewer 310 having the second polarization state from an outside environment which is transmitted by the partial mirror 20 while substantially transmitting light from the display 10 having the first polarization state. This may increase the brightness of the viewer image of the viewer 310. Therefore, the reflective polarizer 30 may enhance the brightness of the display system 300 without negatively affecting transmission of light from the display 10.
  • the partial mirror 20 and the reflective polarizer 30, in combination, may allow substantial transmission of the polarized image 11 from the display 10 having the first polarization state and may substantially reflect the light having the second polarization state incident on the display system 300 from the outside environment.
  • the reflective polarizer 30 may enhance the brightness of the display system 300, the display system 300 may not require providing additional power to the display 10 to obtain a high luminance performance which may otherwise cause high thermal issues and damage to the display 10.
  • FIG. 4 is a schematic view of the display system 300, according to another embodiment of the present disclosure.
  • FIG. 5 is a schematic view of the display system 300, according to another embodiment of the present disclosure.
  • the display system 300 of FIG. 5 is substantially similar to the display system 300 of FIG. 1, with like elements designated by like reference characters.
  • the display 10 and the reflective polarizer 30 define an air gap 50 therebetween.
  • the second bonding layer 41, the display 10, and the reflective polarizer 30 define the air gap 50 therebetween.
  • the reflective polarizer 30 is frame laminated onto the display 10 (i.e., via the second bonding layer 41) .
  • the second bonding layer 41 laminates the reflective polarizer 30 at a periphery of the display 10.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un système d'affichage (300) ayant un affichage (10), un miroir partiel (20) et un polariseur réfléchissant (30). L'affichage (10) est configuré pour former une image polarisée (11) pour une visualisation par un observateur (310). L'image polarisée (11) a un premier état de polarisation. Le miroir partiel (20) est disposé sur l'affichage (10). Le miroir partiel (20) est suffisamment transmissif optiquement de telle sorte que l'observateur (310) peut visualiser l'image polarisée (11) à travers le miroir partiel (20) et est suffisamment réfléchissant optiquement de telle sorte que l'observateur (310) peut visualiser une image d'observateur de l'observateur (310) réfléchie par le miroir partiel (20) vers l'observateur (310). Le polariseur réfléchissant (30) est disposé entre l'affichage (10) et le miroir partiel (20) et est configuré pour transmettre au moins 60% de l'image polarisée (11) vers le miroir partiel (20) pour une visualisation par l'observateur (310) et est configuré pour réfléchir, vers l'observateur (310), au moins 30% de lumière provenant de l'observateur (310) transmise par le miroir partiel (20).
PCT/CN2024/077556 2024-02-19 2024-02-19 Dispositif d'affichage à miroir et système d'affichage Pending WO2025175419A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/077556 WO2025175419A1 (fr) 2024-02-19 2024-02-19 Dispositif d'affichage à miroir et système d'affichage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2024/077556 WO2025175419A1 (fr) 2024-02-19 2024-02-19 Dispositif d'affichage à miroir et système d'affichage

Publications (1)

Publication Number Publication Date
WO2025175419A1 true WO2025175419A1 (fr) 2025-08-28

Family

ID=96846342

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2024/077556 Pending WO2025175419A1 (fr) 2024-02-19 2024-02-19 Dispositif d'affichage à miroir et système d'affichage

Country Status (1)

Country Link
WO (1) WO2025175419A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070183037A1 (en) * 2004-01-15 2007-08-09 Koninklijke Philips Electronic, N.V. Mirror with built-in-display
CN105474291A (zh) * 2013-08-05 2016-04-06 夏普株式会社 反射镜显示器、半反射镜板和电子设备
US20160313555A1 (en) * 2015-04-22 2016-10-27 Innolux Corporation Mirror display device
CN106233364A (zh) * 2014-04-28 2016-12-14 夏普株式会社 反射镜显示器
US20170188020A1 (en) * 2014-06-05 2017-06-29 Sharp Kabushiki Kaisha Mirror display system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070183037A1 (en) * 2004-01-15 2007-08-09 Koninklijke Philips Electronic, N.V. Mirror with built-in-display
CN105474291A (zh) * 2013-08-05 2016-04-06 夏普株式会社 反射镜显示器、半反射镜板和电子设备
CN106233364A (zh) * 2014-04-28 2016-12-14 夏普株式会社 反射镜显示器
US20170188020A1 (en) * 2014-06-05 2017-06-29 Sharp Kabushiki Kaisha Mirror display system
US20160313555A1 (en) * 2015-04-22 2016-10-27 Innolux Corporation Mirror display device

Similar Documents

Publication Publication Date Title
EP3187917B1 (fr) Système d'affichage tête haute
JP7262509B2 (ja) 反射－吸収型偏光子を含む光学積層体
TWI438506B (zh) Image display device
US10551621B2 (en) Light-transmitting pane for displaying an image of a head-up display for polarized sunglasses
JPWO2014112525A1 (ja) ミラーディスプレイ、ハーフミラープレート及び電子機器
CN107636753B (zh) 图像显示装置
US20150260892A1 (en) Display apparatus
TWI545375B (zh) An image display device, a retardation film for use, and a polarizing plate
WO2016035624A1 (fr) Dispositif d'affichage miroir ayant un panneau tactile
US20230017066A1 (en) Optical system and heads up display systems
CN106154622B (zh) 镜面显示设备
JP6059830B1 (ja) 画像表示装置
WO2025175419A1 (fr) Dispositif d'affichage à miroir et système d'affichage
CN208737792U (zh) 镜面显示装置、光反射透射型部件和窗材
JP6059831B1 (ja) 画像表示装置
CN106887412B (zh) 一种柔性显示面板及显示装置
US20130234966A1 (en) Optical element and display system
WO2017138442A1 (fr) Afficheur à miroir
JP6600612B2 (ja) 画像表示装置
JP7176177B2 (ja) 映像表示装置、車両
WO2023275667A1 (fr) Films optiques pour systèmes d'affichage
US12487454B2 (en) Windshield, display system, and reflective polarizer
US12433140B2 (en) Display and display system
JP7745589B2 (ja) 表示装置及び光学フィルム
US10916731B2 (en) Organic light emitting diode display device

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: 24925181

Country of ref document: EP

Kind code of ref document: A1