COVER GLASS

• Main Authors: KOBUNE SHINJI, TAMADA MINORU, FUJII KENSUKE, MISHIRO HITOSHI
• Format: Patent
• Language: English; Japanese
• Published: 03.03.2016
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a cover glass that has reduced a variation in hue even when both anti-glare processing and formation of an anti-reflection film are performed.SOLUTION: There is provided a cover glass in which at least one surface of a glass substrate has a rugged shape obtained through anti-glare processing, and the surface having the rugged shape has an anti-reflection film thereon, where a difference ain avalue and a difference bin bvalue between arbitrary two points in the glass surface having the anti-reflection film satisfy the following formula (1): √{( a)+( b)}≤4.SELECTED DRAWING: None 【課題】防眩処理と反射防止膜形成の両者を行なっても色調の変化が低減されたカバーガラスを提供する。【解決手段】ガラス基板の少なくとも一方の面が防眩処理による凹凸形状を有し、凹凸形状を有する面上に反射防止膜を有するカバーガラスであって、反射防止膜を有するガラス面内の任意の２点におけるａ＊値の差Δａ＊と、ｂ＊値の差Δｂ＊が、下記式（１）を満たす。√｛（Δａ＊）２＋（Δｂ＊）２｝≦４（１）【選択図】なし