WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2007094117) PROCESS FOR PRODUCING OPTICAL FILM, OPTICAL FILM PRODUCED THEREBY, POLARIZING PLATE MAKING USE OF THE OPTICAL FILM, AND LIQUID CRYSTAL DISPLAY APPARATUS MAKING USE OF THE POLARIZING PLATE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/094117    International Application No.:    PCT/JP2006/324346
Publication Date: 23.08.2007 International Filing Date: 06.12.2006
Chapter 2 Demand Filed:    12.12.2007    
IPC:
B29C 41/24 (2006.01), C08J 5/18 (2006.01), G02B 5/30 (2006.01), B29K 1/00 (2006.01), B29L 7/00 (2006.01), B29L 11/00 (2006.01)
Applicants: Konica Minolta Opto, Inc. [JP/JP]; 2970, Ishikawa-machi, Hachioji-shi, Tokyo 1928505 (JP) (For All Designated States Except US).
SHIBUYA, Masahiro [JP/JP]; (JP) (For US Only)
Inventors: SHIBUYA, Masahiro; (JP)
Priority Data:
2006-040513 17.02.2006 JP
Title (EN) PROCESS FOR PRODUCING OPTICAL FILM, OPTICAL FILM PRODUCED THEREBY, POLARIZING PLATE MAKING USE OF THE OPTICAL FILM, AND LIQUID CRYSTAL DISPLAY APPARATUS MAKING USE OF THE POLARIZING PLATE
(FR) processus de fabrication de film optique, film optique obtenu AVEC CE PROCESSUS, plaque de polarisation utilisant le film optique, et appareil d'affichage à cristaux liquides utilisant la plaque de polarisation
(JA) 光学フィルムの製造方法、該方法により得られた光学フィルム、該光学フィルムを用いた偏光板、および該偏光板を用いた液晶表示装置
Abstract: front page image
(EN)A process for producing an optical film, in which even upon an increase of filtration pressure, the mixing of foreign matter into the film can be satisfactorily prevented, thereby attaining effective prolongation of an exchange cycle of filer paper; an optical film produced by the process; a polarizing plate making use of the optical film; and a liquid crystal display apparatus making use of the polarizing plate. There is provided a process for producing an optical film through filtering of a dope having a cellulose ester dissolved therein and forming of the dope into an optical film according to a solution flow casting technique, characterized in that the filtration is carried out with the use of a filter paper of 10 to 15 sec/300 ml air permeability.
(FR)Processus de fabrication de film optique, dans lequel même en cas d'augmentation de pression de filtration, on peut empêcher de manière satisfaisante le mélange de matière étrangère dans le film, pour prolonger ainsi de manière efficace le cycle d'échange du papier filtrant ; film optique obtenu grâce au processus ; plaque de polarisation utilisant le film optique ; et appareil d'affichage à cristaux liquides utilisant la plaque de polarisation. L'invention concerne un processus de fabrication d'un film optique par filtrage d'un additif comprenant un ester de cellulose dissout dans celui-ci et transformation de l'additif en un film optique selon une technique de coulage de flux de solution, caractérisé en ce que la filtration se déroule à l'aide d'un papier filtrant d'une perméabilité à l'air de 10 à 15 sec/300 ml.
(JA) 本発明は、濾過圧が上昇しても、フィルムへの異物の混入を十分に防止でき、濾紙の交換サイクルを有効に延ばすことができる光学フィルムの製造方法、該方法により得られた光学フィルム、該光学フィルムを用いた偏光板、および該偏光板を用いた液晶表示装置を提供することを目的とする。本発明の光学フィルムの製造方法は、セルロースエステルを溶解したドープを濾過した後、該ドープを用いて溶液流延法により光学フィルムを製造する方法で、該濾過を、透気度10~15秒/300mlの濾紙を用いて行うことを特徴とする。
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, GT, 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, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, 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)