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WO2012033354A2 - Plaque de retardement de phase et dispositif d'affichage 3d comprenant celle-ci - Google Patents

Plaque de retardement de phase et dispositif d'affichage 3d comprenant celle-ci Download PDF

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Publication number
WO2012033354A2
WO2012033354A2 PCT/KR2011/006641 KR2011006641W WO2012033354A2 WO 2012033354 A2 WO2012033354 A2 WO 2012033354A2 KR 2011006641 W KR2011006641 W KR 2011006641W WO 2012033354 A2 WO2012033354 A2 WO 2012033354A2
Authority
WO
WIPO (PCT)
Prior art keywords
phase delay
display device
phase
delay unit
layer
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.)
Ceased
Application number
PCT/KR2011/006641
Other languages
English (en)
Korean (ko)
Other versions
WO2012033354A3 (fr
Inventor
김영일
조성식
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.)
LMS Co Ltd
Original Assignee
LMS Co Ltd
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 LMS Co Ltd filed Critical LMS Co Ltd
Publication of WO2012033354A2 publication Critical patent/WO2012033354A2/fr
Publication of WO2012033354A3 publication Critical patent/WO2012033354A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n

Definitions

  • the present invention relates to a phase delay plate, and more particularly, to a phase delay plate and a 3D display device including the same, which are easy to manufacture at low cost.
  • 3D stereoscopic images are generally manufactured using the principle of binocular parallax through two eyes of a human.
  • the polarizer glasses are constructed so that the wavelength of the image transmitted from the flat panel display device is different from each other by half wavelength, and the 3D image is incident on the polarized glasses.
  • phase delay that can selectively delay the phase is required. Since the phase delay is generally manufactured through a complex process similar to a semiconductor manufacturing process such as an etching process and a photo process, the production cost is increased and the price is competitive. There is a problem with this falling.
  • the present invention is to solve the above problems, and relates to a phase retarder and a 3D display device including the same, which is easy to manufacture and can be produced at low cost.
  • the phase delay plate according to the embodiment of the present invention includes a light transmissive substrate having an uneven shape and a phase delay layer formed on the light transmissive substrate.
  • the phase delay layer includes a first phase delay unit and a second phase delay unit having different thicknesses, and the phase of the light passing through the first phase delay unit and the second phase delay unit has a half wavelength difference.
  • the first phase delay unit and the second phase delay unit have the same optical axis.
  • a method of manufacturing a phase delay plate includes a first step of forming a concave-convex shape by pressing a master on which a pattern is formed on a light transmissive substrate, a second step of rubbing on the concave-convex shape formed on the light transmissive substrate, And a third step of filling and curing the birefringent liquid crystal on the light transmissive substrate to form a phase delay layer in which the first phase delay portion and the second phase delay portion are alternately formed.
  • the light transmissive substrate may include a glass substrate and an isotropic resin layer formed on the glass substrate, and the uneven pattern formed on the master may be formed in a strip or checker board shape.
  • the method may further include a fourth step of peeling the cured phase delay layer from the light transmissive substrate.
  • 3D display device is a LCD panel for providing a two-dimensional image, a phase delay layer that is formed on the polarizing plate and the polarizing plate formed on the LCD panel and the phase of the polarized light incident from the polarizing plate is changed
  • the phase delay layer includes a first phase delay part and a second phase delay part having different thicknesses from each other, and the phase of the light passing through the first phase delay part and the second phase delay part has a half wavelength difference. It is composed.
  • the present invention it is possible to simplify the manufacturing process of the phase delay plate, and to manufacture the phase delay unit at low cost.
  • phase delay plate 1 is a cross-sectional view of a phase delay plate according to an embodiment of the present invention.
  • phase delay layer 2 is an enlarged cross-sectional view of a phase delay layer according to an embodiment of the present invention
  • FIG. 3 is a process flowchart of a phase delay plate according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of a 3D display device according to an embodiment of the present invention.
  • FIG. 5 is a perspective view of a phase delay layer according to an embodiment of the present invention.
  • FIG. 6 is a perspective view of a modified phase delay layer according to an embodiment of the present invention.
  • FIG. 7 is a conceptual view illustrating an operation of a 3D display apparatus according to an exemplary embodiment of the present invention.
  • FIG. 1 is a cross-sectional view of the phase delay plate according to the embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view of the phase delay layer according to the embodiment of the present invention.
  • the phase delay plate 100 for a 3D display device includes a light transmissive substrate 110 and a phase delay layer 120 formed on the light transmissive substrate 110.
  • the light transmissive substrate 110 may be formed of a light transmissive transparent material such as glass, and preferably may be made of a transparent glass plate or a transparent film having excellent strength and heat resistance, and has a light transmittance of 90% or more.
  • the light transmissive substrate 110 may be formed of a single light transmissive member, but the isotropic resin 112 may be stacked on the top surface of the glass substrate 111, and the concave-convex shape may be formed on the top surface of the isotropic resin 112.
  • the phase delay layer 120 is formed of a liquid crystal polymer, and the convex portion 121 and the concave portion 122 corresponding to the concave-convex shape of the light transmissive substrate 110 are alternately formed to have the same width S1 and S2. do.
  • the convex portion of the phase delay layer is defined as the 'first phase delay portion, and the concave portion is defined as the second phase delay portion.
  • the first phase delay unit 121 and the second phase delay unit 122 of the phase delay layer 120 play a role of delaying the phase of the incident polarization, and the first phase delay unit 121 and the first phase delay unit 121
  • the phase retardation unit 122 has a phase delay of both the incident polarization and the incident polarization at 45 °.
  • the phase of the polarized light passed through the first phase delay unit 121 and the polarized light passed through the second phase delay unit 122 has a half wavelength difference.
  • the thickness d1 of the first phase delay unit 121 and the thickness d2 of the second phase delay unit 122 may satisfy the following Equation 1.
  • ⁇ may be a wavelength range of 460nm to 780nm as the wavelength band of the incident visible light region, preferably may be a wavelength band of 500nm to 560nm, more preferably 520nm wavelength band of the central wavelength of the visible light region.
  • ⁇ n is the birefringence difference of the phase delay layer liquid crystal.
  • the birefringence of the phase delay layer liquid crystal has a value of 0.1 or more, which is advantageous to form a thin film.
  • the thickness of the first phase delay unit 121 exceeds 5 ⁇ m, there is a problem in that the alignment is difficult. Therefore, the thickness of the first phase delay unit 121 may be manufactured to a thickness of 5 ⁇ m or less. In addition, it is preferable that the thickness of the 2nd phase delay part 122 is 0.5 micrometer or more as mentioned later.
  • the light passing through the first phase delay unit 121 has a half-wave phase delay more than the thickness difference. Will occur.
  • the thickness of the first phase delay unit 121 is (d1) is manufactured to have a thickness of 2.6 ⁇ m.
  • FIG. 3 is a flowchart illustrating a method of manufacturing a phase delay plate according to an embodiment of the present invention.
  • Method of manufacturing a phase delay plate is to press the master 10 to the translucent substrate 110 to form a concave-convex shape, and to rub on the concave-convex shape formed on the translucent substrate 110
  • a birefringent liquid crystal is filled and cured on the light transmissive substrate 110 to form a phase delay layer 120 in which a first phase delay unit 121 and a second phase delay unit 122 are alternately formed. It is configured to include a third step.
  • the first step is prepared by forming an isotropic resin layer 112 on the upper surface of the light-transmissive substrate 110, and by pressing the master 10 patterned irregularities to form an uneven shape on the isotropic resin layer 112. do.
  • the master 10 has convex portions and concave portions formed alternately, and is formed in a strip or checkerboard shape, and the isotropic resin layer 112 to which the master 10 is pressed corresponds to the pattern of the master 10. Concave-convex shapes 112a and 112b are formed.
  • phase delay plate for the 3D display device is formed irregularities through a complex process, such as photolithography in the present invention it is possible to easily produce irregularities using the master.
  • the second step is a step of rubbing with the rubbing roll 20 on the uneven surface of the isotropic resin layer 112 to perform alignment treatment.
  • an alignment layer may be formed on the upper surface of the light transmissive substrate 110 and then rubbed thereon.
  • the third step is a step of forming a birefringent liquid crystal layer on the top surface of the alignment-uneven shape. At this time, the incident light is injected into the liquid crystal so that the upper portion of the liquid crystal can be formed flat.
  • the coated liquid crystal is cured using UV or heat to form the phase delay layer 120.
  • the phase delay layer 120 is a convex first phase delay unit 121 and the concave second phase delay unit 122 is formed repeatedly.
  • the phase delay layer 120 may further include a fourth step of peeling from the isotropic resin layer 112.
  • the light transmissive substrate 110 and the isotropic resin layer 112 of the phase delay plate are to give a thickness difference between the first phase delay unit 121 and the second phase delay unit 122 to the phase delay layer 120.
  • the phase delay layer 120 alone may also function as a phase delay plate for a 3D display device.
  • the thickness of the second phase delay unit 122 is at least 0.5 ⁇ m or more.
  • FIG. 4 is a perspective view of a 3D display device according to an embodiment of the present invention
  • FIG. 5 is a perspective view of a phase delay layer according to an embodiment of the present invention
  • FIG. 6 is a modification of the phase delay layer according to an embodiment of the present invention. .
  • the LCD panel 300 for providing a two-dimensional image the LCD panel 300 for providing a two-dimensional image
  • the polarizing plate 200 formed on the LCD panel 300 the phase delay formed on the polarizing plate 200 Layer 120.
  • the LCD panel 300 is the same as the LCD panel 300 of a general display device having a plurality of pixels 310, a detailed description thereof will be omitted.
  • a backlight device (not shown) may be further included below the LCD panel 300, and a plurality of optical sheets (not shown) may be further included above the LCD panel 300.
  • the polarizer 200 is configured such that only polarized light desired for 2D image information transmitted from the LCD panel 300 is emitted.
  • the polarized light emitted by the polarizer 200 is not limited, but the polarized light emitted should be the same.
  • the phase delay layer 120 is the same as described above, and the first phase delay unit 121 and the second phase delay unit 122 of the phase delay layer 120, as shown in FIG. 122a) or may be repeatedly formed into strip shapes 121b and 122b as shown in FIG.
  • the pixel 310 and the first phase delay unit (of the LCD panel 300 shown in FIG. 121 and the areas of the second phase delay unit 122 preferably correspond to each other.
  • the information can be transmitted differently in units of pixels, and thus there is an advantage that the 3D image can be transmitted more clearly.
  • first phase delay unit 121 and the second phase delay unit 122 may be formed in a relatively simple strip shape, in which case the first phase delay unit 121 and the second phase delay unit ( Preferably, the width of 122 corresponds to the width of the pixel of the LED panel.
  • phase delay layer 120 has been described, but it may be obvious that the phase delay plate 100 may be configured as described above.
  • FIG. 7 is a conceptual view illustrating an operation of a 3D display apparatus according to an exemplary embodiment of the present invention.
  • the phase of the phase delay layer 120 is delayed relative to the incident polarization P1 of both the first polarization P2 and the second polarization P3.
  • phase of the second polarization P3 is expressed as not being delayed, a predetermined phase delay occurs as much as the thickness of the second phase delay unit 122.
  • the thickness of the first phase delay unit 121 is formed to be thicker than the thickness of the second phase delay unit 122, the phase of the first polarization P2 is relatively delayed from the phase of the second polarization P3. .
  • the phase difference between the first polarized light P2 and the second polarized light P3 is half-wavelength difference.
  • the first polarized light P2 and the second polarized light P3 emitted from the phase delay layer 120 are incident on the polarizing glasses 400 to transmit an image to the brain through the user's retina.
  • the first polarized light P2 is transmitted to any one of the right eye 410 or the left eye 420 of the polarizing glasses 400, and the second polarized light P3 is transmitted to the other.

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

Abstract

La présente invention se rapporte à une plaque de retardement de phase destinée à un dispositif d'affichage 3D, comprenant : un substrat de transmission de la lumière convexe-concave ; et une couche de retardement de phase formée sur le substrat de transmission de la lumière, la couche de retardement de phase présentant une première partie de retardement de phase et une seconde partie de retardement de phase qui présentent un axe optique identique et des épaisseurs différentes et qui sont formées de manière répétée, le retardement de phase se produisant dans la lumière qui est passée à travers la première partie de retardement de phase et dans la lumière qui est passée à travers la seconde partie de retardement de phase, les deux lumières présentant une différence de phase d'une demi-longueur d'onde. La présente invention se rapporte également à un affichage 3D qui comprend la plaque de retardement de phase. Selon la présente invention, un procédé de fabrication d'une plaque de retardement de phase est simplifié et le coût de fabrication d'un retardateur de phase est réduit de façon à améliorer la compétitivité des coûts.
PCT/KR2011/006641 2010-09-08 2011-09-08 Plaque de retardement de phase et dispositif d'affichage 3d comprenant celle-ci Ceased WO2012033354A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0088100 2010-09-08
KR1020100088100A KR101034320B1 (ko) 2010-09-08 2010-09-08 위상지연판 및 이를 포함하는 3ｄ 디스플레이 장치

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WO2012033354A2 true WO2012033354A2 (fr) 2012-03-15
WO2012033354A3 WO2012033354A3 (fr) 2012-06-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013174123A1 (fr) * 2012-05-21 2013-11-28 京东方科技集团股份有限公司 Retardateur de phase et son procédé de fabrication, retardateur de phase de polarisation, et dispositif d'affichage
CN114628471A (zh) * 2022-02-17 2022-06-14 武汉华星光电半导体显示技术有限公司 显示装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI450004B (zh) * 2011-10-26 2014-08-21 Benq Materials Corp 圖案化相位延遲膜及其製造方法
KR101602014B1 (ko) * 2012-02-27 2016-03-10 주식회사 엘지화학 광학 필터

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0799402B2 (ja) * 1986-05-16 1995-10-25 日本電気株式会社 波長板
JP3342454B2 (ja) * 1999-11-19 2002-11-11 株式会社有沢製作所 ３ｄ映像表示体形成用のフィルム及び３ｄ映像表示体の製造方法
KR100699132B1 (ko) * 2001-01-18 2007-03-21 가부시키가이샤 아리사와 세이사쿠쇼 3ｄ 영상표시체의 제조방법
JP2003107401A (ja) * 2001-09-28 2003-04-09 Sanyo Electric Co Ltd 立体視／平面視切替表示装置
KR20050067966A (ko) * 2003-12-29 2005-07-05 안재훈 표시 장치용 광학 필터의 제조 방법
KR100805796B1 (ko) * 2007-10-19 2008-02-21 주식회사 엘지에스 디스플레이 장치용 보안필름 및 그 제조방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013174123A1 (fr) * 2012-05-21 2013-11-28 京东方科技集团股份有限公司 Retardateur de phase et son procédé de fabrication, retardateur de phase de polarisation, et dispositif d'affichage
CN114628471A (zh) * 2022-02-17 2022-06-14 武汉华星光电半导体显示技术有限公司 显示装置
US12386112B2 (en) 2022-02-17 2025-08-12 Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Display device

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Publication number Publication date
KR101034320B1 (ko) 2011-05-16
WO2012033354A3 (fr) 2012-06-14

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