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公开(公告)号:US20220064056A1
公开(公告)日:2022-03-03
申请号:US17415322
申请日:2019-12-06
Applicant: CORNING INCORPORATED
Inventor: Jun Hou , Tao Tao , Jianqiang Zhu
Abstract: A method of making strengthened glass articles that includes: providing an article comprising ion-exchangeable alkali metal ions and first and second primary surfaces; etching the first primary surface with an etchant having a pH of less than 7 to form an etched first primary surface; forming an anti-glare surface integral with the second primary surface after masking the first primary surface with a masking film; removing the masking film; providing a first ion-exchange bath comprising ion-exchanging alkali metal ions, each having a larger size than the size of the ion-exchangeable alkali metal ions; and submersing the article in the first bath to form a strengthened article. Further, the strengthened article comprises a compressive stress region extending from the etched first primary surface and the second primary surface to first and second selected depths, respectively. The etching step can be conducted in an etchant-containing bath or with a sponge-rolling apparatus.