METHOD FOR PRODUCING MULTILAYER OPTICAL FILM AND METHOD FOR MANUFACTURING LIQUID CRYSTAL PANEL

• Main Author: INOUE HIROHUMI
• Format: Patent
• Language: English; Korean
• Published: 07.06.2018
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

본 발명의 한 실시형태에 따른 적층 광학 필름의 제조 방법은, 제1 광학 필름(10)에 제2 광학 필름(20)을 접합한 적층 광학 필름(1)의 제조 방법으로서, 필름 접합 장치(40)에 의해 부여되는 소정 방향의 컬에 의해 제1 광학 필름의 컬을 완화하도록, 접합 장치에 의해 컬 조정용 필름(12)을 제1 광학 필름에 접합하여 제1 적층 필름을 얻는 컬 조정 공정과, 제1 적층 필름과 제2 광학 필름을, 제1 광학 필름의 제1 광학축(S)과 제2 광학 필름의 제2 광학축(S)이 소정 각도()를 이루도록, 필름 접합 장치에 의해 접합하여 제2 적층 필름으로서의 적층 광학 필름(1)을 얻는 접합 공정을 구비한다. A method for producing a multilayer optical film according to one embodiment of the present invention is a method for producing a multilayer optical film 1 wherein a second optical film 20 is bonded to a first optical film 10. This method for producing a multilayer optical film 1 comprises: a curl adjustment step wherein a film for curl adjustment 12 is bonded to the first optical film by a film bonding device 40 so that a curl of the first optical film is reduced by a curl applied by the film bonding device in a predetermined direction, thereby obtaining a first multilayer film; and a bonding step wherein the first multilayer film and the second optical film are bonded with each other by the film bonding device so that the first optical axis SA of the first optical film and the second optical axis SD of the second optical film are at a predetermined angle θ, thereby obtaining a second multilayer film, namely the multilayer optical film 1.