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1. (WO2014199689) PRODUCTION METHOD FOR PHASE SHIFT FILM, AND PRODUCTION METHOD FOR CIRCULAR POLARIZING PLATE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/199689 International Application No.: PCT/JP2014/056433
Publication Date: 18.12.2014 International Filing Date: 12.03.2014
IPC:
G02B 5/30 (2006.01) ,B29C 55/04 (2006.01) ,G02F 1/1335 (2006.01) ,G02F 1/13363 (2006.01) ,B29L 7/00 (2006.01) ,B29L 11/00 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
30
Polarising elements
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
55
Shaping by stretching, e.g. drawing through a die; Apparatus therefor
02
of plates or sheets
04
uniaxial, e.g. oblique
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)!]
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
L
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
7
Flat articles, e.g. films or sheets
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
L
INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C59
11
Optical elements, e.g. lenses, prisms
Applicants:
日東電工株式会社 NITTO DENKO CORPORATION [JP/JP]; 大阪府茨木市下穂積1丁目1番2号 1-1-2, Shimohozumi, Ibaraki-shi, Osaka 5678680, JP
Inventors:
清水 享 SHIMIZU, Takashi; JP
平田 聡 HIRATA, Satoshi; JP
近藤 誠司 KONDO, Seiji; JP
村上 奈穗 MURAKAMI, Nao; JP
Agent:
籾井 孝文 MOMII, Takafumi; 大阪府大阪市北区堂島浜1丁目4番4号 アクア堂島東館7階 7th Floor, Aqua Dojima East, 1-4-4, Dojimahama, Kita-ku, Osaka-shi, Osaka 5300004, JP
Priority Data:
2013-12153710.06.2013JP
Title (EN) PRODUCTION METHOD FOR PHASE SHIFT FILM, AND PRODUCTION METHOD FOR CIRCULAR POLARIZING PLATE
(FR) PROCÉDÉ DE PRODUCTION DE FILM DE DÉPHASAGE ET PROCÉDÉ DE PRODUCTION DE PLAQUE POLARISANTE CIRCULAIRE
(JA) 位相差フィルムの製造方法および円偏光板の製造方法
Abstract:
(EN) Provided is a method whereby a phase shift film having reduced biaxiality, a small Nz coefficient, and a slow axis lying in a diagonal direction can be produced at high production efficiency. This production method for phase shift film comprises: clipping the left and right side edge portions of a film to be stretched, respectively within left and right clips of variable pitch type having a clip pitch that is variable in the longitudinal direction; preheating the film; with the location at which the clip pitch of either the left or right clips begins to decrease and the location at which the clip pitch of the other clips begins to decrease positioned at different positions in the longitudinal direction, the clip pitch of the respective clips are reduced to a prescribed pitch, stretching the film diagonally; and the clips which clip the film are released.
(FR) La présente invention concerne un procédé permettant de produire à une efficacité de production élevée un film de déphasage présentant une biaxialité réduite, un faible coefficient Nz et un axe lent disposé dans une direction diagonale. Le procédé de production de film de déphasage consiste à : attacher les parties de bord de côté gauche et droit d'un film à étirer, respectivement à l'intérieur d'attaches gauches et droites à type de pas variable présentant un pas d'attache variable dans la direction longitudinale ; préchauffer le film ; étirer le film diagonalement, l'endroit au niveau duquel le pas d'attache des attaches gauches ou droites commençant à diminuer et l'endroit au niveau duquel le pas d'attache des autres attaches commençant à diminuer étant positionnés à des positions différentes dans la direction longitudinale, le pas d'attache des attaches correspondantes étant réduit à un pas prescrit ; et libérer les attaches attachant le film.
(JA)  二軸性が抑制され、Nz係数が小さい、斜め方向に遅相軸を有する位相差フィルムを高い製造効率で製造し得る方法が提供される。 本発明の位相差フィルムの製造方法は、延伸対象のフィルムの左右側縁部を、それぞれ、縦方向のクリップピッチが変化する可変ピッチ型の左右のクリップによって把持すること;該フィルムを予熱すること;該左右のクリップのうちの一方のクリップのクリップピッチが減少し始める位置と他方のクリップのクリップピッチが減少し始める位置とを縦方向における異なる位置とした状態で、それぞれのクリップのクリップピッチを所定のピッチまで減少させて、該フィルムを斜め延伸すること;および、該フィルムを把持するクリップを解放すること;を含む。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, 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, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)