A spacer wafer for producing spacers of electro-optical converter housings is provided. The spacer wafer is a transparent glass plate having a multiplicity of openings separated from one another and distributed in a grid so that singulated spacers are obtainable by severing sections of the glass plate along separating lines between the openings. The openings have side walls with microstructuring that has a roughness with an average roughness value R.sub.a of less than 0.5 μm with a measurement distance of 500 μm.

A method including emitting a laser beam toward a transparent workpiece such that portions of the laser beam pass through openings of a beam shaping structure and form corresponding laser beam focal lines across the transparent workpiece. The laser beam focal lines forming a plurality of defects in the transparent workpiece disposed along a contour line. The method further including separating the transparent workpiece along the contour line to provide a first workpiece section and a second workpiece section and a cut edge surface on each of the first and second workpiece sections, each cut edge including a defect region and an unaffected region. The defect region having a higher surface roughness than the unaffected region and a minimum distance of the unaffected region to the first major surface being about 20% or less of a thickness between the first major surface and the second major surface.

A glass sheet processing apparatus includes a first gantry assembly that extends across a glass sheet in a cross-machine direction. The first gantry assembly includes a processing head that moves along a length of the first gantry assembly and includes a laser comprising an optical arrangement positioned in a beam path of the laser providing a laser beam focal line that is formed on a beam output side of the optical arrangement. A second gantry assembly extends across the glass sheet in the cross-machine direction. The second gantry assembly includes a processing head that moves along a length of the second gantry assembly.

A method of manufacturing a cell unit substrate, includes: a modified zone-formation step in which modified zones are formed along a predetermined cutting line on the mother substrate to be spaced apart from each other by a first distance by irradiating the mother substrate with laser beams having an energy intensity within an ablation threshold of the mother substrate along the cutting line, a modified zone-etching step in which through-holes are formed along the cutting line on the mother substrate to be spaced apart from each other by the first distance by etching the modified zones, a surface strengthening step in which the mother substrate having the through-holes therein is subjected to surface strengthening, with the mother substrate dipped in a strengthening solution, and a substrate separation step in which the cell unit substrates are separated from the surface-strengthened mother substrate.

A method is disclosed for dividing a composite material in which a brittle material layer and a resin layer are laminated, including: a resin removing step of irradiating the resin layer with a laser beam oscillated from a first laser source along a scheduled dividing line of the composite material to form a processing groove along the scheduled dividing line; a brittle material removing step of irradiating the brittle material layer with a laser beam oscillated from an ultrashort pulsed laser source along the scheduled dividing line to form a processing mark along the scheduled dividing line; and a brittle material layer dividing step of generating thermal stress in the brittle material layer by irradiating the brittle material layer with a laser beam oscillated from a second laser source from the opposite side to the resin layer to thereby divide the brittle material layer.

A method for separating a substrate of a brittle-hard material is provided. The method includes the steps of introducing defects into the substrate at a spacing from one another along a separation line using at least one pulsed laser beam; selecting an average spacing between neighboring defects and a number of laser pulses for generating a respective defect such that a breaking stress (σ.sub.B) for separating the substrate along the separation line is smaller than a first reference stress (σ.sub.R1) of the substrate and such that an edge strength σ.sub.K of the separation edge obtained after separation is greater than a second reference stress (σ.sub.R2) of the substrate; and separating the substrate after introducing the defects by applying a stress along the separation line.

The present disclosure relates to a glide for a mouse, which is made of a glass material and is disposed on an area of the bottom surface of the mouse in order to reduce friction between the bottom surface of the mouse and a support and optimize performance of the mouse when the mouse moves, a manufacturing method thereof, and a mouse having the same.

A glass and an enclosure, including windows, cover plates, and substrates for mobile electronic devices comprising the glass. The glass has a crack initiation threshold that is sufficient to withstand direct impact, has a retained strength following abrasion that is greater than soda lime and alkali aluminosilicate glasses, and is resistant to damage when scratched. The enclosure includes cover plates, windows, screens, and casings for mobile electronic devices and information terminal devices.

A method for separating a portion from a sheet glass element having a thickness of at least 2 millimeters along an intended separation line that divides the sheet glass element into the portion and a remaining main part is provided. The method includes producing filamentary damages comprising sub-micrometer hollow channels in a volume of the glass sheet element adjacently aligned along the separation line; and heating and/or cooling the glass sheet element to cause expansion and/or contraction so that the portion detaches from the main part along the separation line. The portion and the remaining main part each remain intact as a whole. The step of producing the filamentary damages includes generating a plasma within the volume with laser pulses of an ultrashort pulse laser; and displacing points of incidence of the laser pulses over a surface of the glass sheet element along the separation line.

A component of glass or glass ceramic having predamages arranged along at least one predetermined dividing line is provided. The dividing line has a row of predamages lying one behind the other. The predamages pass continuously through the glass or the glass ceramic with at least 90% of the predamages being cylindrically symmetrical. The glass or the glass ceramic has a material compaction of at least 1% relative to an actual material density in a radius of 3 μm about a longitudinal axis of respective pre-damaged points. The relative weight loss per pre-damaged point is less than 10% and the component has a thickness of at least 3.5 mm.