Patent application number | Description | Published |
20090081512 | Micromachined electrolyte sheet, fuel cell devices utilizing such, and micromachining method for making fuel cell devices - A sintered electrolyte sheet comprising: a body of no more than 45 μm thick and laser machined features with at least one edge surface having at least 10% ablation. A method of micromachining the electrolyte sheet includes the steps of: (i) supporting a sintered electrolyte sheet; (ii) micromachining said sheet with a laser, wherein said laser has a wavelength of less than 2 μm, fluence of less than 200 Joules/cm | 03-26-2009 |
20100102042 | Non-contact glass shearing device and method for scribing or cutting a moving glass sheet - A non-contact glass shearing device and a method are described herein that vertically scribes or cuts a downward moving glass sheet to remove outer edges (beads) from the downward moving glass sheet. In addition, the non-contact glass shearing device and method can horizontally scribe or cut the downward moving glass sheet (without the outer edges) so that it can be separated into distinct glass sheets. | 04-29-2010 |
20100119808 | METHOD OF MAKING SUBSURFACE MARKS IN GLASS - In a method of making subsurface marks in glass, a beam of radiation is applied to the glass, the radiation having a wavelength that is ≦400 nm. The beam is applied using marking parameters of a marking device (e.g., a laser) effective to change a density and a resulting index of refraction of the glass to form subsurface marks having a size not greater than 50 μm without forming microcracks in the glass and without marking the surface of the glass. Another aspect is the glass having the subsurface marks disposed in a range of 20 to 200 microns below an outer surface of the glass. | 05-13-2010 |
20100287991 | PREVENTING GAS FROM OCCUPYING A SPRAY NOZZLE USED IN A PROCESS OF SCORING A HOT GLASS SHEET - A spray nozzle is used in a process of quenching a hot glass sheet during a laser scoring process or other high energy glass heating process. The scoring is conducted by a high energy means such as a laser. The nozzle is located in proximity to the glass sheet, creating gas in liquid used to quench the glass located in the nozzle (e.g., water). The gas (e.g., air bubbles) is removed from the quenching liquid. Then, the spray nozzle is used to spray the quenching liquid onto the sheet at a location trailing laser scoring of the sheet, such as using a traveling anvil machine at the bottom of the draw. The spray nozzle (purge nozzle) has a purge opening and tubing leading to a discharge location. The purge nozzle can have a sloped passageway that pre-stages gas bubbles near the purge opening in the nozzle. The spray nozzle can include a cooling coil passing around the nozzle passageway that enables a coolant to travel along the coil. This cools the quenching liquid passing through the nozzle, and increases the solubility of bubbles in the quenching liquid in the nozzle. A gas filter can receive gas-rich quenching liquid from the pressurized quenching liquid source, remove gas from the liquid, and send gas-depleted quenching liquid to the spray nozzle. | 11-18-2010 |
20100294748 | METHOD FOR SEPARATING A SHEET OF BRITTLE MATERIAL - A method for separating sheet of brittle material having a thickness equal to or less than about 1 mm is disclosed. Once an initial flaw or crack is produced, a full body crack can be propagated across a dimension of the brittle material with a laser beam that is substantially absorbed proximate the surface of the sheet to produce sub-sheets. In some embodiments, only a single pass of the laser beam over a surface of the sheet is necessary to separate the sheet. In other embodiments a plurality of passes may be used. Sub-sheets can be further processed into electronic devices by depositing thin film materials on the sub-piece. | 11-25-2010 |
20100326972 | ARTICLE WITH MULTIPLE SURFACE DEPRESSIONS AND METHOD AND SYSTEM FOR MAKING THE SAME - Articles having multiple surface depressions and process and apparatus for making the same. The invention is useful in making, inter alia, glass plates having a surface depression array which can be used in semiconductor and electronics manufacture, drug discovery and display devices. | 12-30-2010 |
20110049113 | METHODS FOR LASER SCRIBING AND BREAKING THIN GLASS - A method of forming a vent in a glass substrate includes forming a defect in the glass substrate on a scribe line. A beam spot of a laser may be directed onto the defect and advanced along the scribe line. A cooling jet may be directed onto the defect such that the surface of the glass substrate is cooled from a maximum temperature. Thereafter, the cooling spot may be advanced along the scribe line with the beam spot to form the vent in the glass substrate. | 03-03-2011 |
20110049765 | Methods for Laser Cutting Glass Substrates - A method for cutting a glass article from a strengthened glass substrate having a surface compression layer and a tensile layer includes forming an edge defect in the surface compression layer on a first edge of the strengthened glass substrate. The method further includes propagating a through vent through the surface compression and tensile layers at the edge defect. The through vent precedes a region of separation along a cut line between the glass article and the strengthened glass substrate. | 03-03-2011 |
20110127242 | METHODS FOR LASER SCRIBING AND SEPARATING GLASS SUBSTRATES - A method of forming a scribe line in a glass substrate having a compressive surface layer and an inner tension layer includes forming a defect through the compressive surface layer that is offset from a first edge of the glass substrate. The defect extends through the compressive surface layer to partially expose the inner tension layer. A scribe line is generated through the compressive surface layer by translating the glass substrate with respect to a laser beam and a cooling jet. The scribe line is initiated at the defect and is terminated at a termination location along the scribe line that is offset from a second edge of the glass substrate. | 06-02-2011 |
20110127244 | METHODS FOR LASER SCRIBING AND SEPARATING GLASS SUBSTRATES - Methods of forming scribe vents in a strengthened glass substrate having a compressive surface layer and an inner tension layer are provided. In one embodiment, a first and second defect is formed to partially expose the inner tension layer. A first scribe vent may be generated in a first scribing direction by translating a laser beam and a cooling jet on a surface of the strengthened glass substrate at a first scribing speed. A second scribe vent intersecting the first scribe vent may be generated in a second scribing direction by translating the laser beam and the cooling jet on the surface of the strengthened glass substrate at a second scribing speed that is greater than the first scribing speed. The defects may be perpendicular to the scribing directions. In another embodiment, the first scribe vent may be fused at an intersection location prior to generating the second scribe vent. | 06-02-2011 |
20120040146 | Thin Substrates Having Mechanically Durable Edges - A substrate ( | 02-16-2012 |
20120131963 | PREVENTING GAS FROM OCCUPYING A SPRAY NOZZLE USED IN A PROCESS OF SCORING A HOT GLASS SHEET - A spray nozzle is used in a process of quenching a hot glass sheet during a laser scoring process or other high energy glass heating process. The nozzle is located in proximity to the glass sheet, creating gas in liquid used to quench the glass located in the nozzle (e.g., water). The gas (e.g., air bubbles) is removed from the quenching liquid. Then, the spray nozzle is used to spray the quenching liquid onto the sheet at a location trailing laser scoring of the sheet. The spray nozzle has a purge opening and tubing leading to a discharge location. The spray nozzle can have a sloped passageway that pre-stages gas bubbles near the purge opening. The spray nozzle can include a cooling coil passing around the nozzle passagewayto cool the quenching liquid passing through the nozzle, and increase the solubility of bubbles in the quenching liquid. | 05-31-2012 |
20120135195 | METHODS FOR SEPARATING GLASS ARTICLES FROM STRENGTHENED GLASS SUBSTRATE SHEETS - Methods for separating glass articles from strengthened glass substrate sheets and strengthened glass substrate sheets are provided. In one embodiment, a method includes forming at least one groove on at least one surface of the glass substrate sheet and strengthening the glass substrate sheet by a strengthening process. The groove defines the glass article and partially extends through a thickness of the glass substrate sheet. The method further includes generating an initiation defect on the groove at an initiation location to cause a through crack to self-propagate through the glass substrate sheet along the groove, thereby separating the glass article from the glass substrate sheet. In another embodiment, a strengthened glass substrate sheet includes a strengthened glass having a glass article groove and an initiation groove on a surface, the glass article groove defining a glass article. | 05-31-2012 |
20120211923 | LASER CUTTING METHOD - A method for cutting a sheet of material having a thickness of at most 400 μm using an electromagnetic wave beam (EWB) such as a laser. The method comprises forming a surface initiation defect and irradiating the sheet along a predetermined path within a short distance from the initiation defect a scanning EWB, such that the sheet is heated and cooled to allow for the propagation of the initiation defect into the predetermined path, and further along the predetermined path to result in a separation of the sheet along the predetermined irradiation path. This method can be advantageously used to cut glass sheets having a thin thickness to result in high-quality edge substantially free of major defects carried over from the initiation defect. | 08-23-2012 |
20120243853 | Micromachined Electrolyte Sheet, Fuel Cell Devices Utilizing Such, and Micromachining Method For Making Fuel Cell Devices - A sintered electrolyte sheet comprising: a body of no more than 45 μm thick and laser machined features with at least one edge surface having at least 10% ablation. A method of micromachining the electrolyte sheet includes the steps of: (i) supporting a sintered electrolyte sheet; (ii) micromachining said sheet with a laser, wherein said laser has a wavelength of less than 2 μm, fluence of less than 200 Joules/cm | 09-27-2012 |
20120247154 | METHODS OF FABRICATING A GLASS RIBBON - Methods of fabricating a glass ribbon comprise the step of bending a glass ribbon in a cutting zone to provide a bent target segment with a bent orientation in the cutting zone. The methods further include the step of severing at least one of the edge portions from the central portion of the bent target segment within the cutting zone. Further methods are provided including the step of bending a glass ribbon in a bending zone downstream from a downward zone, wherein the glass ribbon includes an upwardly concave surface through the bending zone. The methods further include the step of severing at least one of the edge portions from the central portion of a target segment within the bending zone. | 10-04-2012 |
20120301683 | EDGE-PROTECTED PRODUCT AND FINISHING METHOD - An edge-protected product and finishing method therefor. The product comprises a first we and a second web bonded intermittently to the peripheral regions of a major surface of the sheet material to be protected. The bonded webs provide the desired level of protection to the peripheral regions and the edge surfaces of the sheet material. The intermittent bonding allows for the clean and convenient separation of the sheet material and the webs that a continuously bonded web would not be able to provide. Where laser cutting is used to separate the protected product, the edge-protected product with intermittent bonding areas allows for the separation without laser irradiation to the web material, thus no generation of toxic fume or charring due to oxidation, melting and/or disintegration of the web material caused by laser heating. The invention is particularly useful for protecting thin glass sheets, especially those in the form of a spool. | 11-29-2012 |
20130084504 | MICROMACHINED ELECTROLYTE SHEET - The disclosure relates to ceramic lithium ion electrolyte membranes and processes for forming them. The ceramic lithium electrolyte membrane may comprise at least one ablative edge. Exemplary processes for forming the ceramic lithium ion electrolyte membranes comprise fabricating a lithium ion electrolyte sheet and cutting at least one edge of the fabricated electrolyte sheet with an ablative laser. | 04-04-2013 |
20130223922 | LOW Tg GLASS GASKET FOR HERMETIC SEALING APPLICATIONS - A glass-coated gasket comprises a gasket main body defining an inner hole and having a first contact surface and a second contact surface opposite the first contact surface, and a glass layer formed over at least a portion of one of the first contact surface and the second contact surface. The glass layer comprises a low melting temperature glass. A hermetic package comprises a substrate/glass-coated gasket/substrate structure that can be sealed using a thermo-compressive sealing step. | 08-29-2013 |
20140138420 | Methods Of Cutting A Laminate Strengthened Glass Substrate - Methods of cutting laminate strengthened glass substrates are disclosed. A method is disclosed which includes providing a laminate strengthened glass substrate having a glass core layer with first and second surface portions, and at least one glass cladding layer fused to the first surface portion or the second surface portion of the glass core layer. The glass core layer has a core coefficient of thermal expansion that is less than a cladding coefficient of thermal expansion. The method further includes forming an edge defect on the laminate strengthened glass substrate, heating first and second regions of the laminate strengthened glass substrate on the at least one glass cladding layer. The first and second regions are offset from first and second sides of a desired line of separation, respectively. The method further includes propagating a crack imitated at the edge defect between the first and second regions. | 05-22-2014 |
20140147623 | Sacrificial Cover Layers for Laser Drilling Substrates and Methods Thereof - A method for forming a plurality of precision holes in a substrate by drilling, including affixing a sacrificial cover layer to a surface of the substrate, positioning a laser beam in a predetermined location relative to the substrate and corresponding to a desired location of one of the plurality of precision holes, forming a through hole in the sacrificial cover layer by repeatedly pulsing a laser beam at the predetermined location, and pulsing the laser beam into the through hole formed in the sacrificial cover layer. A work piece having precision holes including a substrate having the precision holes formed therein, wherein a longitudinal axis of each precision hole extends in a thickness direction of the substrate, and a sacrificial cover layer detachably affixed to a surface of the substrate, such that the sacrificial cover layer reduces irregularities of the precision holes. | 05-29-2014 |
20140242306 | LOW Tg GLASS GASKET FOR HERMETIC SEALING APPLICATIONS - A glass-coated gasket comprises a gasket main body defining an inner hole and having a first contact surface and a second contact surface opposite the first contact surface, and a glass layer formed over at least a portion of one of the first contact surface and the second contact surface. The glass layer comprises a low melting temperature glass. A vacuum insulated glass window comprises a substrate/glass-coated gasket/substrate structure that can be sealed using a thermo-compressive sealing step. | 08-28-2014 |
20140352358 | LASER-SCRIBING OF CHEMICALLY STRENGTHENED GLASS - A method is disclosed for scribing a contained crack or vent in a chemically strengthened glass sheet. The glass has shallow surface regions under compressive stress, bounding a central region under tensile stress. The vent is formed by rapidly bulk-heating the glass, using radiation from a carbon monoxide laser, to a depth just below a surface compressive region and extending marginally into the tensile stress region then rapidly cooling the heated region with a water mist spray. The glass sheet can be subsequently divided along the vent by application of mechanical or thermal stress. | 12-04-2014 |
20150044445 | LASER CONTROLLED ION EXCHANGE PROCESS AND GLASS ARTICLES FORMED THEREFROM - A method for forming ion-exchanged regions in a glass article by contacting an ion source with at least one surface of the glass article, forming a first ion-exchanged region in the glass article by heating a first portion of the glass article with a laser, and forming a second ion-exchanged region in the glass article. Characteristics of the first ion-exchanged region may be different from characteristics of the second ion-exchanged region. A depth of the ion-exchanged region may be greater than 1 μm. A glass article including a first ion-exchanged region, and a second ion-exchanged region having different characteristics from the first ion-exchanged region. The thickness of the glass article is less than or equal to about 0.5 mm. | 02-12-2015 |