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1. (WO2007007565) RETARDATION FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY ELEMENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/007565 International Application No.: PCT/JP2006/313054
Publication Date: 18.01.2007 International Filing Date: 30.06.2006
IPC:
G02B 5/30 (2006.01) ,G02F 1/1335 (2006.01) ,G02F 1/13363 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
30
Polarising elements
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
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
01
for the control of the intensity, phase, polarisation or colour
13
based on liquid crystals, e.g. single liquid crystal display cells
133
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333
Constructional arrangements
1335
Structural association of optical devices, e.g. polarisers, reflectors, with the cell
[IPC code unknown for ERROR IPC Code incorrect: invalid subgroup (0=>999999)!]
Applicants:
コニカミノルタオプト株式会社 Konica Minolta Opto, Inc. [JP/JP]; 〒1928505 東京都八王子市石川町2970番地 Tokyo 2970, Ishikawa-machi, Hachioji-shi, Tokyo 1928505, JP (AllExceptUS)
玉川 美典 TAMAGAWA, Minori [JP/JP]; JP (UsOnly)
葛原 憲康 KUZUHARA, Noriyasu [JP/JP]; JP (UsOnly)
道端 勇 MICHIHATA, Isamu [JP/JP]; JP (UsOnly)
Inventors:
玉川 美典 TAMAGAWA, Minori; JP
葛原 憲康 KUZUHARA, Noriyasu; JP
道端 勇 MICHIHATA, Isamu; JP
Priority Data:
2005-19852107.07.2005JP
Title (EN) RETARDATION FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY ELEMENT
(FR) FILM DE TEMPORISATION, PLAQUE DE POLARISATION ET ÉLÉMENT D’AFFICHAGE À CRISTAUX LIQUIDES
(JA) 位相差フィルム、偏光板及び液晶表示装置
Abstract:
(EN) Disclosed are a retardation film which can prevent the dispersion in the phase difference values which is a disadvantage of a conventional cellulose retardation film and shows a stable display quality, a polarizing plate and a liquid crystal display element. The retardation film comprises a cellulose derivative and a plasticizer, has a film thickness of 10 to 50 μm inclusive, and has an Ro value represented by the formula (i) ranging from 30 to 100 nm inclusive, an Rt value represented by the formula (ii) ranging from 100 to 300 nm inclusive, and an S value represented by the formula (iii) ranging from 0.002 to 0.030 inclusive. Formula (i): Ro = (nx-ny)xd Formula (ii): Rt = Sxd Formula (iii): S = ((nx+ny)/2-nz)
(FR) L’invention concerne un film de temporisation capable d’empêcher la dispersion des valeurs de différence de phase, ce qui est un inconvénient d’un film de temporisation de cellulose conventionnel et manifeste une qualité d’affichage stable, une plaque de polarisation et un élément d’affichage à cristaux liquides. Le film de temporisation comprend un dérivé de cellulose et un plastifiant, est d'une épaisseur de 10 à 50 µm compris, et a une valeur Ro représentée par la formule (i) allant de 30 à 100 nm compris, une valeur Rt représentée par la formule (ii) allant de 100 à 300 nm compris, et une valeur S représentée par la formule (iii) allant de 0,002 à 0,030 compris. Formule (i): Ro = (nx-ny)xd Formule (ii): Rt = Sxd Formule (iii): S = ((nx+ny)/2-nz)
(JA)  本発明は、従来のセルロース系位相差フィルムの欠点である位相差値の変動を抑制して、表示品位が安定した位相差フィルム、偏光板及び液晶表示装置を提供する。この位相差フィルムは、セルロース誘導体と可塑剤を含み、膜厚が10μm以上、50μm以下で下記式(i)式で表されるRoが30nm以上、100nm以下の範囲にあり、下記式(ii)で表されるRtが100nm以上、300nm以下の範囲にあり、かつ下記式(iii)で表されるSが0.002以上、0.030以下であることを特徴とする。   式(i) Ro=(nx-ny)×d   式(ii) Rt=S×d   式(iii) S=((nx+ny)/2-nz)
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
KR1020080032067CN101218521KR1020130095852