[go: up one dir, main page]

WO2009151260A3 - Optical device, and backlight unit and liquid crystal display comprising the same - Google Patents

Optical device, and backlight unit and liquid crystal display comprising the same Download PDF

Info

Publication number
WO2009151260A3
WO2009151260A3 PCT/KR2009/003088 KR2009003088W WO2009151260A3 WO 2009151260 A3 WO2009151260 A3 WO 2009151260A3 KR 2009003088 W KR2009003088 W KR 2009003088W WO 2009151260 A3 WO2009151260 A3 WO 2009151260A3
Authority
WO
WIPO (PCT)
Prior art keywords
base film
optical device
liquid crystal
crystal display
backlight unit
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/KR2009/003088
Other languages
French (fr)
Korean (ko)
Other versions
WO2009151260A2 (en
Inventor
박정호
도영수
김도윤
안정애
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
Priority claimed from KR1020080053508A external-priority patent/KR100985733B1/en
Priority claimed from KR1020080054991A external-priority patent/KR101009707B1/en
Application filed by LMS Co Ltd filed Critical LMS Co Ltd
Priority to CN2009801215991A priority Critical patent/CN102066991A/en
Priority to US12/996,933 priority patent/US20110085108A1/en
Priority to JP2011513420A priority patent/JP2011523102A/en
Publication of WO2009151260A2 publication Critical patent/WO2009151260A2/en
Publication of WO2009151260A3 publication Critical patent/WO2009151260A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0215—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having a regular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • G02F1/133507—Films for enhancing the luminance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

The present invention relates to an optical device which maintains luminance characteristics at a maximum level, improves light-collecting effects, and enables a wide viewing angle, and to a backlight unit and a liquid crystal display comprising the same. To this end, one embodiment of the optical device of the present invention includes: a base film having a light transmittance; a plurality of iron portions formed on at least one surface of the base film; and a fine optical pattern containing a plurality of apexes and recesses continuously formed on parts of the iron portions. In the meantime, another embodiment of the optical device of the present invention includes a base film having a light transmittance, and a plurality of third fine optical patterns formed on at least one surface of the base film, wherein each of the third fine optical patterns has a portion contacting the surface of the base film, formed into a figure with a longer axis and a shorter axis, and wherein each of third fine optical patterns has an apex with a height that becomes lower as the latter goes from the center towards both ends thereof according to the direction of the longer axis of the figure.
PCT/KR2009/003088 2008-06-09 2009-06-09 Optical device, and backlight unit and liquid crystal display comprising the same Ceased WO2009151260A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2009801215991A CN102066991A (en) 2008-06-09 2009-06-09 Optical device, and backlight unit and liquid crystal display comprising the same
US12/996,933 US20110085108A1 (en) 2008-06-09 2009-06-09 Optical device, and backlight unit and liquid crystal display including the same
JP2011513420A JP2011523102A (en) 2008-06-09 2009-06-09 Optical element, backlight unit including the same, and liquid crystal display device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2008-0053508 2008-06-09
KR1020080053508A KR100985733B1 (en) 2008-06-09 2008-06-09 Optical element, backlight unit and liquid crystal display device having same
KR1020080054991A KR101009707B1 (en) 2008-06-12 2008-06-12 Optical element, backlight unit and liquid crystal display including same
KR10-2008-0054991 2008-06-12

Publications (2)

Publication Number Publication Date
WO2009151260A2 WO2009151260A2 (en) 2009-12-17
WO2009151260A3 true WO2009151260A3 (en) 2010-03-25

Family

ID=41417237

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/003088 Ceased WO2009151260A2 (en) 2008-06-09 2009-06-09 Optical device, and backlight unit and liquid crystal display comprising the same

Country Status (3)

Country Link
JP (1) JP2011523102A (en)
CN (1) CN102066991A (en)
WO (1) WO2009151260A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014056042A (en) * 2012-09-11 2014-03-27 Dainippon Printing Co Ltd Optical sheet, surface light source device, transmissive display device, and production method of optical sheet
EP2904311A1 (en) * 2012-10-08 2015-08-12 Rambus Delaware LLC Article of manufacture with micro-features of differing surface roughness
US10401553B2 (en) 2017-03-21 2019-09-03 Keiwa Inc. Liquid crystal display device and turning film for liquid crystal display device
US10345644B2 (en) 2017-03-21 2019-07-09 Keiwa Inc. Liquid crystal display device and turning film for liquid crystal display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000057807A (en) * 1999-02-04 2000-09-25 케이이치 오사무라 Light Diffusing Sheet And Back Light Unit Using Light Diffusing Sheet
KR20060104254A (en) * 2005-03-29 2006-10-09 엘지.필립스 엘시디 주식회사 Liquid crystal display device including an optical sheet formed with projections on both sides
KR20080046312A (en) * 2006-11-22 2008-05-27 희성전자 주식회사 Light guide plate structure of side type backlight device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000292790A (en) * 1999-02-04 2000-10-20 Keiwa Inc Light diffusion sheet and backlight unit using the same
JP4317378B2 (en) * 2003-04-07 2009-08-19 恵和株式会社 Optical sheet and backlight unit using the same
KR20070108794A (en) * 2006-05-08 2007-11-13 미래나노텍(주) Back light assembly of the liquid crystal display device provided with the optical sheet and the optical sheet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000057807A (en) * 1999-02-04 2000-09-25 케이이치 오사무라 Light Diffusing Sheet And Back Light Unit Using Light Diffusing Sheet
KR20060104254A (en) * 2005-03-29 2006-10-09 엘지.필립스 엘시디 주식회사 Liquid crystal display device including an optical sheet formed with projections on both sides
KR20080046312A (en) * 2006-11-22 2008-05-27 희성전자 주식회사 Light guide plate structure of side type backlight device

Also Published As

Publication number Publication date
WO2009151260A2 (en) 2009-12-17
JP2011523102A (en) 2011-08-04
CN102066991A (en) 2011-05-18

Similar Documents

Publication Publication Date Title
US9354449B2 (en) Image display device and liquid crystal lens
KR102105576B1 (en) Multi-colored pixelated display with sparkle reduction surface
TW200726997A (en) A light diffusion board for improving light diffusion and enhancing brightness
KR100978078B1 (en) Prism sheet and liquid crystal display device having same
WO2009028439A1 (en) Prism sheet, and backlight unit and liquid crystal display device using prism sheet
WO2008084744A1 (en) Optical sheet, planar light source device, and display device
RU2014127476A (en) DISPLAY ELEMENT, CARRYING FOIL AND PRODUCT WITH DISPLAY ELEMENT
WO2009044520A1 (en) Light diffusion sheet and liquid crystal display device
JP2008527409A5 (en)
WO2009044521A1 (en) Light diffusion sheet and liquid crystal display device
CN101923248B (en) Liquid crystal display
JP2008521054A5 (en)
CN104948998B (en) Back light unit and the liquid crystal display device with the back light unit
WO2009151260A3 (en) Optical device, and backlight unit and liquid crystal display comprising the same
CN102927499A (en) Liquid crystal display device and backlight module thereof
NL1034683A1 (en) Light diffusion plate, surface light source device and liquid crystal display device.
TW201027137A (en) Optical sheet and backlight unit having the same
JP2009503562A (en) Turning film with variable pitch
TW200643565A (en) Optical member, backlight assembly having the same and liquid crystal display device having the same
WO2009016912A1 (en) Liquid crystal display device, television receiver, and illumination device
CN100561309C (en) Light guide plate of liquid crystal display and backlight unit using same
CN102313208A (en) Backlight module group
EP1895334A3 (en) Light redirecting film having varying optical elements
WO2009019989A1 (en) Backlight device, liquid crystal display device, optical member, and lenticular lens sheet
JP5964451B2 (en) Light guide plate

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980121599.1

Country of ref document: CN

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

Ref document number: 09762647

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 12996933

Country of ref document: US

Ref document number: 2011513420

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09762647

Country of ref document: EP

Kind code of ref document: A2