Corning Incorporated

Brian Paul Strines

Kevin Barry Reiman

Jonathan David Pesansky

Benedict Osobomen Egboiyi

Rostislav Vatchev Roussev

Jaymin Amin

Vitor Marino Schneider

Pascale Oram

Michelle Nicole Haase Pastel

Natesan Venkataraman

Dale Robert Powers

Josef C Lapp

Glen Bennett Cook

Kathleen Ann Wexell

Michael Thomas Murtagh

John William Botelho

Diane Kimberlie Guilfoyle

Linda Frances Reynolds-Heffer

Steven F Hoysan

Douglas Edmon Goforth

Edward J Sever

Debra L Burgess

Laurence Ralph Morey

Benjamin Allen Stevens

Joseph S Flynn

Michelle N Pastel

Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of compression DOC of at least about 125 &#x3bc;m within the glass article. The compressive stress profile includes a single linear segment or portion extending from the surface to the depth of compression DOC. Alternatively, the compressive stress profile may include an additional portion extending from the surface to a relatively shallow depth and the linear portion extending from the shallow depth to the depth of compression.

Strengthened glass with ultra deep depth of compression

Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of at least about 45 &#x3bc;m within the article are provided. In one embodiment, the compressive stress profile includes a single linear segment extending from the surface to the depth of compression DOC. Alternatively, the compressive stress profile includes two linear portions: the first portion extending from the surface to a relatively shallow depth and having a steep slope; and a second portion extending from the shallow depth to the depth of compression. The strengthened glass has a 60% survival rate when dropped from a height of 80 cm in an inverted ball drop test and a peak load at failure of at least 10 kgf as determined by abraded ring-on-ring testing. Methods of achieving such stress profiles are also described.

Strengthened glass with deep depth of compression

Embodiments are directed to strengthened glass articles comprising a thickness t&#x2264;1 mm (1000 &#x3bc;m), an inner region under a central tension CT (in MPa), and at least one compressive stress layer adjacent the inner region and extending within the strengthened glass article from a surface of the strengthened glass article to a depth of layer DOL (in &#x3bc;m), wherein the strengthened glass article is under a compressive stress at the surface CS(in MPa), wherein the strengthened glass article is an alkali aluminosilicate glass article comprising 0-5 mol % LiO, and at least 3 mol % AlO, and wherein the DOL&#x2265;70 &#x3bc;m, and a CS/DOL ratio&#x2265;2.5 MPa/&#x3bc;m.

Strengthened glass articles having improved survivability

Apparatus and methods for impact testing of a transparent substrate are provided. The apparatus includes a base () for receiving the transparent substrate (), the base having a curved surface () about which the transparent substrate is bent by a first fixture () and a second fixture (). An abrasive sheet () is disposed between the transparent substrate and an impacting object () which is released from above the substrate such that the force from the impacting object causes damage to the transparent substrate while the transparent substrate is bent about the curved surface.

Apparatus and methods to impact test materials

Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of layer DOL of about 130 &#x3bc;m up to about 175 &#x3bc;m or, alternatively, to a depth of compression (DOC) in a range from about 90 &#x3bc;m to about 120 &#x3bc;m within the article. The compressive layer has a stress profile that includes a first substantially linear portion extending from a relatively shallow depth to the DOL or DOC and a second portion extending from the surface to the shallow depth. The second portion is substantially linear at a depth from 0 &#x3bc;m to 5 &#x3bc;m and has a steeper slope than that of the first portion of the profile. Methods of achieving such stress profiles are also described.

The strengthened glass has a 60% survival rate when dropped from a height of 80 cm in an inverted ball test and a peak load at failure of at least 10 kgf as determined by abraded ring-on-ring testing.

Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of at least about 45 &#x3bc;m within the article are provided. In one embodiment, the compressive stress profile includes a single linear segment extending from the surface to the depth of compression DOC. Alternatively, the compressive stress profile includes two linear portions: the first portion extending from the surface to a relatively shallow depth and having a steep slope; and a second portion extending from the shallow depth to the depth of compression. The strengthened glass has a 60% survival rate when dropped from a height of 80 cm in an inverted ball drop test and an equibiaxial flexural strength of at least 10 kgf as determined by abraded ring-on-ring testing. Methods of achieving such stress profiles are also described.

Growing community of inventors

Painted Post, NY, United States of America

Brian Paul Strines