Corning Incorporated

Eungsik Park

Yuhui Jin

Jun Hou

Tammy Lynn Petriwsky

Brandon Allen Bazemore

Govindarajan Natarajan

Donald O Bigelow

Kiat Chyai Kang

Sue Camille Lewis

Donald Orrin Bigelow

A method for increasing the tactile feel of a glass-ceramic article includes (a) performing a first etching of a surface of the glass-ceramic article with a first etchant to create a plurality of features on the surface, wherein the first etchant comprises hydrofluoric acid and an inorganic fluoride salt, and the plurality of features comprises protrusions and recesses and (b) performing a second etching of the surface with a second etchant different from the first etchant to enlarge a distance between adjacent features of a same type, wherein the second etching occurs after the first etching, after the second etching an average distance between adjacent features of a same type is in a range from 0.5 μm to 20 μm and a density of features of the same type is in a range from 9,000 to 25,000 features/mm, and a tactile feel of the surface after the second etching is greater than the tactile feel of the surface before the first etching.

Method for controlling surface features on glass-ceramic articles and articles formed therefrom

A method for increasing the tactile feel of a glass-ceramic article includes (a) performing a first etching of a surface of the glass-ceramic article with a first etchant to create a plurality of features on the surface, wherein the first etchant comprises hydrofluoric acid and an inorganic fluoride salt, and the plurality of features comprises protrusions and recesses and (b) performing a second etching of the surface with a second etchant different from the first etchant to enlarge a distance between adjacent features of a same type, wherein the second etching occurs after the first etching, after the second etching an average distance between adjacent features of a same type is in a range from 0.5 &#x3bc;m to 20 &#x3bc;m and a density of features of the same type is in a range from 9,000 to 25,000 features/mm, and a tactile feel of the surface after the second etching is greater than the tactile feel of the surface before the first etching.

Methods of processing a glass substrate comprise the step of obtaining a glass substrate and a tab removably attached to a portion of the glass substrate. The position of the glass substrate is manipulated with the engagement portion and the tab is removed from the portion of the glass substrate by releasing a mounting portion of the tab from the portion of the glass substrate without damaging the glass substrate. In further examples, methods include the steps of removably attaching first and second tabs to respective first and second surfaces of a glass substrate and coiling the glass substrate on a storage roll wherein the first tab adheres to the second tab. In further examples, a glass apparatus comprises a glass substrate and a removable tab including a mounting portion attached to a portion of the glass substrate with a first peel force of less than about 10 N/cm.

Methods of processing a glass substrate and glass apparatus

Growing community of inventors

Yorba Linda, CA, United States of America

Eungsik Park