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1. (WO2006090617) POLARIZING ELEMENT, LIQUID CRYSTAL PANEL, LIQUID CRYSTAL TELEVISION AND LIQUID CRYSTAL DISPLAY DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/090617    International Application No.:    PCT/JP2006/302614
Publication Date: 31.08.2006 International Filing Date: 15.02.2006
IPC:
G02B 5/30 (2006.01), G02F 1/1335 (2006.01)
Applicants: NITTO DENKO CORPORATION [JP/JP]; 1-1-2, Shimohozumi, Ibaraki-shi, Osaka 5678680 (JP) (For All Designated States Except US).
KOISHI, Naoki [JP/JP]; (JP) (For US Only).
YANO, Shuuji [JP/JP]; (JP) (For US Only).
YODA, Kenji [JP/JP]; (JP) (For US Only).
KOBAYASHI, Kentarou [JP/JP]; (JP) (For US Only).
TOMONAGA, Masatoshi [JP/JP]; (JP) (For US Only).
OOE, Naoto [JP/JP]; (JP) (For US Only)
Inventors: KOISHI, Naoki; (JP).
YANO, Shuuji; (JP).
YODA, Kenji; (JP).
KOBAYASHI, Kentarou; (JP).
TOMONAGA, Masatoshi; (JP).
OOE, Naoto; (JP)
Agent: MOMII, Takafumi; 7th Floor, Chiyoda Building Bekkan 6-1-2, Nishitemma Kita-ku, Osaka-shi Osaka 530-0047 (JP)
Priority Data:
2005-049844 25.02.2005 JP
Title (EN) POLARIZING ELEMENT, LIQUID CRYSTAL PANEL, LIQUID CRYSTAL TELEVISION AND LIQUID CRYSTAL DISPLAY DEVICE
(FR) ELEMENT POLARISANT, ECRAN A CRISTAUX LIQUIDES, TELEVISION A CRISTAUX LIQUIDES ET DISPOSITIF D'AFFICHAGE A CRISTAUX LIQUIDES
(JA) 偏光素子、液晶パネル、液晶テレビ、および液晶表示装置
Abstract: front page image
(EN)A polarizing element by which contrast ratio in a diagonal direction of a liquid crystal display device is improved and a color shift quantity in the diagonal direction can be reduced. The polarizing element is provided with a polarizer, and on one side of the polarizer, a negative plate (C), a positive plate (A) and a positive plate (C) are provided. The positive plate (A) is arranged between the polarizer and the positive plate (C) so that the delay phase axis substantially orthogonally intersects with an absorption axis of the polarizer. The positive plate (C) is permitted to have a RthPC [590] of -60nm or less.
(FR)La présente invention concerne un élément polarisant permettant d'améliorer le rapport de contraste dans une direction diagonale d'un dispositif d'affichage à cristaux liquides et de réduire le décalage de couleur dans la direction diagonale. L'élément polarisant est fourni avec un polarisateur et, sur un côté du polarisateur sont placées une plaque négative (C), une plaque positive (A) et une plaque positive (C). La plaque positive (A) est placée entre le polarisateur et la plaque positive (C) de manière à ce que l'axe de phase à retardement croise de manière sensiblement orthogonale l'axe d'absorption du polarisateur. La plaque positive (C) est calibrée pour avoir un RthPC [590] de -60 nm au plus.
(JA) 本発明の目的は、液晶表示装置の斜め方向のコントラスト比を高め、斜め方向のカラーシフト量を小さくし得る偏光素子を提供すること。本発明の偏光素子は、偏光子と、該偏光子の片側に、ネガティブCプレート、ポジティブAプレート、およびポジティブCプレートとを備え、該ポジティブAプレートが、その遅相軸が該偏光子の吸収軸と実質的に直交するように、該偏光子と該ポジティブCプレートとの間に配置されてなり、該ポジティブCプレートのRthPC[590]が-60nm以下である。    
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, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, 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, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (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)