OPTICAL LAMINATE, OPTICAL LAMINATE WITH COVER GLASS, METHOD FOR PRODUCING THEM, AND IMAGE DISPLAY DEVICE WITH COVER GLASS

• Main Authors: TAKASE YUTA, ISAKI AKINORI, KITAMURA YOSHIAKI
• Format: Patent
• Language: English; Japanese
• Published: 31.10.2019
• Subjects: ADVERTISING; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; 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; SEALS; SIGNS; TRANSPORTING

To provide an optical laminate in which cracking is suppressed even though the optical laminated is subjected to a cutting work, an optical laminate with a cover glass including the optical laminate, a method for producing them, and an image display device with a cover glass including the optical laminate or optical laminate with a cover glass.SOLUTION: An optical laminate has an optical film that is subjected to a cutting work and an adhesive layer, and has a ratio RR/DR of regular reflectance RR and diffuse reflectance DR in a cut end face of 0.15 or more. An optical laminate with a cover glass includes the optical laminate, and a cover glass laminated via another adhesive layer arranged on the opposite side to the adhesive layer of the optical laminate.SELECTED DRAWING: Figure 5 【課題】切削加工されているにもかかわらずクラックの抑制された光学積層体、このような光学積層体を含むカバーガラス付光学積層体、およびこれらの製造方法、ならびに、これらの光学積層体またはカバーガラス付光学積層体を含むカバーガラス付画像表示装置を提供すること。【解決手段】本発明の光学積層体は、切削加工された光学フィルムおよび粘着剤層を有し、切削端面における正反射率ＲＲと拡散反射率ＤＲとの比ＲＲ／ＤＲが０．１５以上である。本発明のカバーガラス付光学積層体は、このような光学積層体と、光学積層体の粘着剤層と反対側に配置された別の粘着剤層を介して積層されたカバーガラスと、を有する。【選択図】図５