WO2008143250A1 - Light leakage reducing method for large size display device and display device - Google Patents

Light leakage reducing method for large size display device and display device Download PDF

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Publication number
WO2008143250A1
WO2008143250A1 PCT/JP2008/059227 JP2008059227W WO2008143250A1 WO 2008143250 A1 WO2008143250 A1 WO 2008143250A1 JP 2008059227 W JP2008059227 W JP 2008059227W WO 2008143250 A1 WO2008143250 A1 WO 2008143250A1
Authority
WO
WIPO (PCT)
Prior art keywords
display device
large size
light leakage
size display
frame
Prior art date
Application number
PCT/JP2008/059227
Other languages
French (fr)
Japanese (ja)
Inventor
Sadahiko Nishina
Original Assignee
Soken Chemical & Engineering 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 Soken Chemical & Engineering Co., Ltd. filed Critical Soken Chemical & Engineering Co., Ltd.
Publication of WO2008143250A1 publication Critical patent/WO2008143250A1/en

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
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

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)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention is directed to a method of reducing light leakage that is due to thermal shrinkage of an extended polarizer film affixed to a longer than 19-inch diagonal TN mode large size display device and that occurs in the form of an arc at a frame portion of the large size display device. An adhesive affixes the extended polarizer film so that a ratio (W/L) is not larger than 0.1, wherein the ratio (W/L) is the maximum value (W) from each frame of the light leakage arch that occurrs at each frame of the large size display device to a length (L) of a long side of the large size display device. The adhesive is given the strength to cope with the shrinkage of the extended polarizer film. A side chain is introduced into a carbon hydride main chain of the adhesive so that the brightness (X) is not larger than 4cd/m2 at the time when the light leakage portion formed in the form of the arch at the frame of the large size display device becomes dark and, further, so that a ratio (X/Y) of the brightness (X) to the brightness (Y) at the time when a light non-leakage portion becomes dark is not larger than 20. According to the invention, light leakage that occurs in the form of an arc at a frame portion of a large size display device can be made small and a difference in brightness between the light leakage portion and a polarizer disposed portion becomes small even at a dark time, so that the light leakage portion becomes less conspicuous.
PCT/JP2008/059227 2007-05-23 2008-05-20 Light leakage reducing method for large size display device and display device WO2008143250A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007136905A JP5070463B2 (en) 2007-05-23 2007-05-23 Method and display device for reducing light leakage of large display device
JP2007-136905 2007-05-23

Publications (1)

Publication Number Publication Date
WO2008143250A1 true WO2008143250A1 (en) 2008-11-27

Family

ID=40031946

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059227 WO2008143250A1 (en) 2007-05-23 2008-05-20 Light leakage reducing method for large size display device and display device

Country Status (3)

Country Link
JP (1) JP5070463B2 (en)
TW (1) TW200912400A (en)
WO (1) WO2008143250A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103149742A (en) * 2011-12-06 2013-06-12 乐金显示有限公司 Liquid crystal display for preventing light leakage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5515780B2 (en) * 2010-01-26 2014-06-11 住友化学株式会社 LCD panel
KR101868154B1 (en) * 2012-05-22 2018-06-15 엘지디스플레이 주식회사 Liquid crystal display for preventing a light vent

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06108026A (en) * 1992-09-28 1994-04-19 Nippon Synthetic Chem Ind Co Ltd:The Self-adhesive for polarizing plate
JP2006259664A (en) * 2005-02-18 2006-09-28 Fuji Photo Film Co Ltd Polarizing plate, acrylic pressure-sensitive adhesive for polarizing plate, and liquid crystal display device using polarizing plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06108026A (en) * 1992-09-28 1994-04-19 Nippon Synthetic Chem Ind Co Ltd:The Self-adhesive for polarizing plate
JP2006259664A (en) * 2005-02-18 2006-09-28 Fuji Photo Film Co Ltd Polarizing plate, acrylic pressure-sensitive adhesive for polarizing plate, and liquid crystal display device using polarizing plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103149742A (en) * 2011-12-06 2013-06-12 乐金显示有限公司 Liquid crystal display for preventing light leakage

Also Published As

Publication number Publication date
TW200912400A (en) 2009-03-16
JP2008292674A (en) 2008-12-04
JP5070463B2 (en) 2012-11-14

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