Corning Incorporated

Daniel Ralph Harvey

Alexander Mikhailovich Streltsov

Richard Robert Grzybowski

Stephan Lvovich Logunov

Ljerka Ukrainczyk

Yuhui Jin

Heather Debra Boek

Jiangwei Feng

Laurent Joubaud

Xavier Gerard Lafosse

Brandon Allen Bazemore

Robert Carl Burket

Diane Kimberlie Guilfoyle

Daniel Louis Gabriel Ricoult

Jeffrey Alan Decker

Timothy Michael Gross

Matthew John Dejneka

Sinue Gomez

John Steele Abbott, Iii

Correy Robert Ustanik

Vasudha Ravichandran

Ta-Ko Chuang

Kirk Richard Allen

Jeffrey A Decker

Xavier Lafosse

Methods of forming a sheet glass product comprising a plurality of growth-limited glass bump spacers. According to the methods, a glass pane of the sheet glass product is irradiated with laser radiation to locally heat the glass pane at a plurality of spacer localities and induce growth of a plurality of glass bump spacers in the glass pane. The growth of the plurality of glass bump spacers is limited by utilizing a growth-limiting plate comprising a scattering surface portion. The scattering surface portion of the growth-limiting plate mitigates damage to the growth-limiting plate and may also mitigate damage to the glass pane. Vacuum insulated glass products and systems for forming a growth-limited sheet glass product are also provided.

Sheet glass product fabrication with growth-limited glass bump spacers

The present disclosure relates to substrates having laser-induced scattering features located either on the surface of the substrate or within the substrate, along with methods of making such scattering substrates. The disclosed scattering substrates provide improved light extraction properties and may be useful in a variety of applications, such as lighting and electronic displays.

Laser featured glass for display illumination

A method of fabricating a high-density array of holes in glass is provided, comprising providing a glass piece having a front surface, then irradiating the front surface of the glass piece with a UV laser beam focused to a focal point within +/&#x2212;100 &#x3bc;m of the front surface of the glass piece most desirably within +/&#x2212;50 &#x3bc;m of the front surface. The lens focusing the laser has a numerical aperture desirably in the range of from 0.1 to 0.4, more desirably in the range of from 0.1 to 0.15 for glass thickness between 0.3 mm and 0.63 mm, even more desirably in the range of from 0.12 to 0.13, so as to produce open holes extending into the glass piecefrom the front surfaceof the glass piece, the holes having an diameter the in range of from 5 to 15 &#x3bc;m, and an aspect ratio of at least 20:1. For thinner glass, in the range of from 0.1-0.3 mm, the numerical aperture is desirably from 0.25 to 0.4, more desirably from 0.25 to 0.3, and the beam is preferably focused to within +/&#x2212;30 &#x3bc;m of the front surface of the glass. The laser is desirable operated at a repetition rate of about 15 kHz or below. An array of holes thus produced may then be enlarged by etching. The front surface may be polished prior to etching, if desired.

Methods of forming high-density arrays of holes in glass

Methods of forming a glass article are disclosed. In one embodiment, a method of forming a glass article includes translating a pulsed laser beam on a glass substrate sheet to form a laser damage region between a first surface and a second surface of the glass substrate sheet. The method further includes applying an etchant solution to the glass substrate sheet to remove a portion of the glass substrate sheet about the laser damage region. The method may further include strengthening the glass substrate sheet by an ion-exchange strengthening process, and coating the glass substrate sheet with an acid-resistant coating. Also disclosed are methods where the laser damage region has an initial geometry that changes to a desired geometry following the reforming of the glass substrate sheet such that the initial geometry of the laser damage region compensates for the bending of the glass substrate sheet.

Methods of fabricating glass articles by laser damage and etching

A method for fabricating a high-density array of holes in glass comprises providing a glass sheet having a front surface and irradiating the glass sheet with a laser beam so as to produce open holes extending into the glass sheet from the front surface of the glass sheet. The beam creates thermally induced residual stress within the glass around the holes, and after irradiating, the glass sheet is annealed to eliminate or reduce thermal stress caused by the step of irradiating. The glass sheet is then etched to produce the final hole size. Preferably, the glass sheet is also annealed before the step of irradiating, at sufficiently high temperature for a sufficient time to render the glass sheet dimensionally stable during the step of annealing after irradiating.

High-speed micro-hole fabrication in glass

Methods and apparatus () for estimating the gravity-free shape of a flexible object () such as a thin sheet of glass are provided. In certain embodiments, an estimate of the gravity-free shape is produced using a bed-of-nails (BON) gauge () and then the shape is measured at a higher spatial resolution using a second gauge (), with the theoretical sag between the pins () of the BON gauge being subtracted from the shape measured by the second gauge. In other embodiments, shape measurements are performed on both sides of the object () and used to estimate the reliability of the gravity-free shape estimate. In further embodiments, the bed-of-nails gauge () uses a least squares minimization procedure in adjusting the heights of the pins ().

Methods and apparatus for estimating gravity-free shapes

Vacuum-insulated glass (VIG) windows () that employ glass-bump spacers () and two or more glass panes () are disclosed. The glass-bump spacers are formed in the surface () of one of the glass panes () and consist of the glass material from the body portion () of the glass pane. Thus, the glass-bump spacers are integrally formed in the glass pane, as opposed to being discrete spacer elements that need to be added and fixed to the glass pane. Methods of forming VIG windows are also disclosed. The methods include forming the glass-bump spacers by irradiating a glass pane with a focused beam (F) from a laser (). Heating effects in the glass cause the glass to locally expand, thereby forming a glass-bump spacer. The process is repeated at different locations in the glass pane to form an array of glass-bump spacers. A second glass pane is brought into contact with the glass-bump spacers, and the edges (F,B) sealed. The resulting sealed interior region () is then evacuated to a vacuum pressure of less than one atmosphere.

Vacuum-insulated glass windows with glass-bump spacers

A method of cutting a glass sheet that has been thermally or chemically strengthened along a predetermined line, axis, or direction with high speed and with minimum damage on the cut edges. The strengthened glass sheet may be an aluminoborosilicate glass material having at least one alkali metal oxide modifier, and the ratio At least one damage line is formed within the strengthened glass sheet. The at least one damage line is formed outside the strengthened compressive stress surface layers and within the tensile stress layer of the strengthened glass sheet. The at least one damage line may be formed by laser treatment. A crack is initiated in the strengthened glass sheet and propagated along the at least one damage line to separate the strengthened glass sheet along the predetermined line, axis, or direction into at least two pieces.

Method of separating strengthened glass

A method of cutting a glass sheet that has been thermally or chemically strengthened along a predetermined line, axis, or direction with high speed and with minimum damage on the cut edges. The strengthened glass sheet may be cut into at least two pieces, one of which having a predetermined shape or dimension. At least one damage line is formed within the strengthened glass sheet. The at least one damage line is formed outside the strengthened compressive stress surface layers and within the tensile stress layer of the strengthened glass sheet. The at least one damage line may be formed by laser treatment. A crack is initiated in the strengthened glass sheet and propagated along the at least one damage line to separate the strengthened glass sheet along the predetermined line, axis, or direction into at least two pieces.

Growing community of inventors

Bath, NY, United States of America

Daniel Ralph Harvey