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Methods and apparatus for strength and/or strain loss mitigation in coated glass

A device, glass technology, applied in the field of devices for alleviating strength and/or strain loss in coated glass

Active Publication Date: 2017-04-26
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, coatings can be applied to glass substrates to address surface hardness issues

Method used

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  • Methods and apparatus for strength and/or strain loss mitigation in coated glass
  • Methods and apparatus for strength and/or strain loss mitigation in coated glass
  • Methods and apparatus for strength and/or strain loss mitigation in coated glass

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Embodiment Construction

[0034] Various embodiments disclosed herein relate to improving the hardness of a substrate (eg, glass substrate 102 ) by applying a coating 104 (which may be one or more layers) to the substrate. Coating 104 increases the hardness (and thus scratch resistance) of the surface of glass substrate 102 . In order to provide a greater understanding of how to achieve the broad scope of contemplated embodiments of the invention, some experimental and theoretical discussions are provided below. see image 3 , several glass substrates 102 of interest represented by the substrates shown are selected for evaluation and development of novel processes and structures that improve the mechanical and optical properties of pristine (or bare) glass substrates 102 . Selected substrate materials include Corning Incorporated The glass, which is an ion-exchanged glass, is usually an alkali aluminosilicate glass or an alkali aluminoborosilicate glass, but other glass compositions are also possibl...

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Abstract

Methods and apparatus provide for a glass substrate having a first strain to failure characteristic, a first elastic modulus characteristic, and a flexural strength; and a coating applied over the glass substrate to produce a composite structure in order to increase a hardness thereof, where the coating has a second strain to failure characteristic and a second elastic modulus characteristic, where the first strain to failure characteristic is higher than the second strain to failure characteristic, and one of: (i) the first elastic modulus characteristic is above a minimum predetermined threshold such that any reduction of the flexural strength of the glass substrate resulting from application of the coating is mitigated; and (ii) the first elastic modulus characteristic is below a maximum predetermined threshold such that any reduction of the strain to failure of the glass substrate resulting from application of the coating is mitigated.

Description

[0001] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 042,966, filed August 28, 2014, which application is based upon and is hereby incorporated by reference in its entirety. [0002] technical background [0003] This document relates to methods and apparatus for preserving high strength and / or strain in coated glass substrate structures. [0004] Many consumer and commercial products use high-quality cover glass sheets to protect critical components within the product, provide a user interface for inputs and / or displays, and / or provide many other functions. For example, mobile devices, such as smart phones, mp3 players, and tablet computers, typically employ one or more sheets of high-strength glass on the product to simultaneously protect the product and implement the aforementioned user interface. In such applications, as well as others, the glass is preferably durable (eg, scratch- and chip-resistant), transparent, and / o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/083C03C3/085C03C3/087C03C3/091C03C3/093C03C3/095C03C17/22C03C17/23C03C21/00
CPCC03C3/083C03C3/085C03C3/087C03C3/091C03C3/093C03C3/095C03C17/22C03C17/225C03C17/23C03C21/002C03C2217/24C03C2217/281
Inventor A·J·埃利森S·高梅兹S·D·哈特胡广立J·C·莫罗J·J·普莱斯
Owner CORNING INC