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Reverse ion exchange process for lithium containing glass

A technology of ion exchange and ion exchange medium, applied in the field of reverse ion exchange process of lithium-containing glass, which can solve the problems of warpage, stress relaxation, undesired dimensional changes, etc.

Active Publication Date: 2021-01-08
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, removal of material from the surface of strengthened glass-based articles necessitates ion-exchanging the material again to achieve the desired surface compressive stress characteristics, which can produce undesirable dimensional changes or warp the glass-based article
Furthermore, the re-ion exchange step may create an undesirable internal diffusion of ions introduced during the chemical strengthening process and allow stress relaxation in the glass-based article

Method used

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  • Reverse ion exchange process for lithium containing glass
  • Reverse ion exchange process for lithium containing glass
  • Reverse ion exchange process for lithium containing glass

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Embodiment Construction

[0067] In the following description, the same reference numerals denote similar or corresponding parts in the several views shown in the drawings. It is also to be understood that terms such as "top", "bottom", "outwardly", "inwardly", etc. are words of convenience and do not constitute limitations of the terms unless otherwise indicated. Unless otherwise indicated, the recited numerical ranges include both the upper and lower limits of the stated ranges, as well as any ranges therebetween. Unless otherwise stated, the indefinite article "a" or "an" and its corresponding definite article "the" as used herein mean "at least one" or "one or more (one / species)". It is also to be understood that the various features disclosed in the specification and drawings can be used in any and all combinations.

[0068] As used herein, the terms "glass-based articles" are used in their broadest sense to include any object made in whole or in part of glass, including glass-ceramics. All com...

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PUM

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Abstract

A method of reworking lithium containing ion exchanged glass-based articles is provided. The method includes a reverse ion exchange process that returns the glass-based article to approximately the composition of the glass from which the glass-based article was produced, before being subjected to ion exchange.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 678,569, filed May 31, 2018, which is hereby based and incorporated by reference in its entirety. Background technique [0003] The present disclosure relates to a process for reversing ion exchange of lithium-containing glass-based articles. [0004] Glass-based products are widely used in electronic devices as covers or windows for portable or mobile electronic communication and entertainment devices, such as mobile phones, smart phones, tablets, video players, information terminal (IT) devices and tablet computers, etc. , and other applications. As glass-based articles become more widely used, it becomes more and more important to create strengthened glass-based articles with improved durability, especially when subjected to tensile stress and / or due to contact with hard and / or or deep blemishes caused by contact with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/097C03C21/00
CPCC03C21/002C03C3/097C03C3/085
Inventor 金宇辉P·奥拉姆R·V·鲁斯夫
Owner CORNING INC