OPTICAL LAMINATE AND DISPLAY DEVICE

• Main Authors: SHIMIZU JIRO, SEGUCHI SEIJI, SHIONO JUN
• Format: Patent
• Language: English; Japanese
• Published: 04.04.2019
• Subjects: ADVERTISING; CRYPTOGRAPHY; 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; DISPLAY; DISPLAYING; EDUCATION; FREQUENCY-CHANGING; 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; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SEALS; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

To provide an optical laminate that cuts blue light and has an excellent appearance as well as other functions, and a display device including the optical laminate.SOLUTION: Provided is an optical laminate 5 which is used disposed on a display surface side of a display device, the optical laminate 5 including a transparent substrate sheet 1, a functional layer 2 present on one surface side of the transparent substrate sheet 1, and a blue light blocking layer 3 disposed on the other surface side of the transparent substrate sheet 1, and an adhesive layer 4 present outside the blue light blocking layer 3. The blue light blocking layer 3 contains 1 to 5 mass% of inorganic particles having an average particle diameter of 30 to 150 nm, and cuts light of a wavelength of 450 nm. Also provided is a display device including the optical laminate 5.SELECTED DRAWING: Figure 1 【課題】青色光をカットし、外観に優れ、他の機能も兼ね備えた光学用積層体と当該光学用積層体を備えた表示装置を提供する。【解決手段】表示装置の表示面側に配置して使用される光学用積層体５であって、前記光学用積層体５は、透明基材シート１と、当該透明基材シート１の一方の面側に存在する機能性層２と、当該透明基材シート１の他方の面側に存在する青色光カット層３と、当該青色光カット層３の外側に存在する粘着層４とを有し、前記青色光カット層３は、平均粒径３０〜１５０ｎｍの無機粒子を１〜５質量％含有し、波長４５０ｎｍの光をカットすることを特徴とする光学用積層体５であり。また、当該光学用積層体５を備えた表示装置である。【選択図】図１