COVER GLASS FOR DISPLAY, ON-VEHICLE DISPLAY DEVICE, AND PRODUCTION METHOD OF COVER GLASS FOR DISPLAY

• Main Authors: TAMADA MINORU, OTSUKA KAZUTAKA, SHIMIZU TAKESHI, IGARASHI KYUSHIRO
• Format: Patent
• Language: English; Japanese
• Published: 02.08.2021
• Subjects: ADVERTISING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; 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; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LABELS OR NAME-PLATES; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SIGNS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

To provide cover glass for display with excellent visibility.SOLUTION: Cover glass for display is a glass plate having a first main surface and a second main surface, which contains, as represented by mol percentage based on oxides, 50-75% of SiO2, 5-20% of Al2O3, 2-20% of Na2O, 0-6% of K2O, 0-15% of MgO, 0-10% of a total amount (CaO+SrO+BaO) of CaO, SrO and BaO, 0-5% of a total amount (ZrO2+TiO2) of ZrO2 and TiO2, 0-10% of B2O3, and 0-20% of Li2O. The cover glass has a ream minimum distance of 100 mm or more and 1,000 mm or less, and a ream period of 1 mm or more and 30 mm or less.SELECTED DRAWING: None 【課題】視認性に優れるディスプレイ用カバーガラスを提供する。【解決手段】第１の主面および第２の主面を有するガラス板であって、下記酸化物基準のモル百分率表示で、ＳｉＯ２を５０〜７５％、Ａｌ２Ｏ３を５〜２０％、Ｎａ２Ｏを２〜２０％、Ｋ２Ｏを０〜６％、ＭｇＯを０〜１５％、ＣａＯ、ＳｒＯおよびＢａＯを合量（ＣａＯ＋ＳｒＯ＋ＢａＯ）で０〜１０％、ＺｒＯ２およびＴｉＯ２を合量（ＺｒＯ２＋ＴｉＯ２）で０〜５％、Ｂ２Ｏ３を０〜１０％、Ｌｉ２Ｏを０〜２０％含有し、リーム最小距離が１００ｍｍ以上１０００ｍｍ以下であり、リーム周期が１ｍｍ以上３０ｍｍ以下である、ディスプレイ用カバーガラス。【選択図】なし