OPTICAL LAMINATE, METHOD FOR MANUFACTURING OPTICAL LAMINATE, POLARIZER, AND IMAGE DISPLAY DEVICE

• Main Authors: HASHIMOTO KOJI, TANIMURA TOSHIYUKI, MORIOKA YU, UENO KENJI, TAZAKI KEIKO
• Format: Patent
• Language: English; French; Japanese
• Published: 18.07.2013
• Subjects: ADVERTISING; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LABELS OR NAME-PLATES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SEALS; SIGNS; SPRAYING OR ATOMISING IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

Provided is an optical laminate comprising a plurality of layers having high refractive-index differences laminated together, wherein interface reflection at the interfaces between overlapping layers and interference patterns caused thereby can be suitably prevented. This optical laminate, which comprises at least an optical functional layer (1) laminated to one surface of a light-transmitting substrate, is characterized in that the refractive index of said optical functional layer (1) increases continuously in the thickness direction thereof from the light-transmitting-substrate side to the opposite side, following a sigmoid curve. La présente invention se rapporte à un stratifié optique qui comprend une pluralité de couches stratifiées ensemble qui présentent des indices de réfraction différents, la réflexion au niveau des interfaces entre les couches qui se chevauchent, et les motifs d'interférence provoqués par cette dernière pouvant être empêchés de manière appropriée. Ce stratifié optique qui comprend au moins une couche fonctionnelle optique (1) qui est stratifiée sur une surface d'un substrat électroluminescent, est caractérisé en ce que l'indice de réfraction de ladite couche fonctionnelle optique (1) augmente de façon continue dans le sens de l'épaisseur de cette dernière depuis le côté substrat électroluminescent vers le côté opposé, après une courbe sigmoïde.