Patent SG-11201804919T-A (SG)
Title: Glass substrate for chemical strengthening and method for chemically strengthening with controlled curvature
Inventor: NAVET BENJAMINE
IPC: C03C23/00
Filed: 2016-12-01
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 22 June 2017 (22.06.2017) WIPO I PCT (10) International Publication Number WO 2017/102345 Al 1111111111111101110101011111010111110111010110101110111111111111111111111110111111 (51) International Patent Classification: CO3C 21/00 (2006.01) CO3C 23/00 (2006.01) (21) International Application Number: PCT/EP2016/079381 (22) International Filing Date: 1 December 2016 (01.12.2016) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15201319.9 18 December 2015 (18.12.2015) EP (71) Applicants: AGC GLASS EUROPE [BE/BE]; Avenue Jean Monnet, 4, 1348 Louvain-La-Neuve (BE). ASAHI GLASS CO LTD [JP/JP]; Shin-Marunouchi Building1-5- 1 MarunouchiChiyoda Ku, Tokyo, Tokyo/Tokyo 100-8405 (JP). (72) Inventors: NAVET, Benjamine; Avenue des Musiciens, 18, 1348 Louvain-La-Neuve (BE). BOULANGER, Pierre; Rue de la Medaille, 12, 4218 Couthuin (BE). (74) Agent: AGUSTSSON, Sveinn; me Louis Bleriot 12, 6041 Gosselies (BE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: of inventorship (Rule 4.17(iv)) Published: with international search report (Art. 21(3)) W O 20 17 / 10 23 45 Al (54) Title: GLASS SUBSTRATE FOR CHEMICAL STRENGTHENING AND METHOD FOR CHEMICALLY STRENGTHEN- ING WITH CONTROLLED CURVATURE (57) : The invention relates to a glass substrate for chemical strengthening where a side is treated by ion implantation so as to reduce the extent of ion exchange upon chemical strengthening. Other embodiments relate to a method for making a chemically strengthened glass substrate with controlled curvature comprising: providing a substrate having first and second opposing sides, wherein the substrate presents in the surface layer of at least part of the first side a first ion implantation profile that reduces the ex - tent of ion exchange upon chemical strengthening and chemically strengthening the ion implantation treated glass substrate. The parameters of the ion implantation are chosen such that a controlled curvature is obtained upon chemical strengthening.