Coverslips
JP7652211B2Active Publication Date: 2025-03-27NIPPON ELECTRIC GLASS CO LTD
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Patent Information
- Application Number
- JP2023071533
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2017-12-26
- Filing Date
- 2023-04-25
- Publication Date
- 2025-03-27
- Estimated Expiration
- 2038-12-21
Abstract
To create a cover glass having high scratch resistance.SOLUTION: A cover glass has a glass composition comprising, in mol%, SiO2 20-80%, Al2O3 15-30%, B2O3 0-3.7%, Li2O 1-20%, Na2O 2.8-20%, K2O 0-20%, MgO 0.1-50%, and CaO 0-20%, with an X value of 7400 or more as calculated by the following formula. X=61.1×[SiO2]+174.3×[Al2O3]+11.3×[B2O3]+124.7×[Li2O]-5.2×[Na2O]+226.7×[K2O]+139.4×[MgO]+117.5×[CaO]+89.6×[BaO]+191.8×[TiO2]+226.7×[Y2O3]+157.9×[ZrO2]-42.2×[P2O5].SELECTED DRAWING: Figure 1
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