In this laser cutting method and laser cutting device with which a base material is cut by irradiating, with laser, a surface of a base material formed of a composite material, an irradiation step for swinging the laser in a tolerance direction crossing the length direction of a cutting line while moving the laser relative to the base material along the length direction of the cutting line for cutting the base material is repeatedly performed on the cutting line, thereby cutting the base material, and in the irradiation step, a swing width in the width direction of the laser is decreased as the depth in the depth direction from the surface of the base material toward the rear surface increases.

A method and device for producing a predetermined breaking line in a vehicle interior trim part with a scanning laser beam. An actual position of the vehicle interior trim part held in a working plane relative to a laser scanning device is detected by a camera and the actual position of the predetermined breaking line is derived. A stored desired position for a scan figure corresponding to the predetermined breaking line is corrected to an actual position, whereby the predetermined breaking line is produced at a predetermined position on the vehicle interior trim part during scanning of the scan figure. A positional shift of the scan figure becomes possible because a sensor matrix with an upstream diffuser is used, which can detect transmitted components of the laser beam independently of the position of the laser beam along the scan figure.

A mask includes a mask sheet including an upper surface and a lower surface facing the upper surface, the mask sheet including an opening passing through the upper surface and the lower surface; and a mask frame that supports the mask sheet, the mask sheet includes a protrusion adjacent to the opening and protruding from the lower surface, and a recess adjacent to the protrusion and recessed from the lower surface toward the upper surface of the mask sheet.

An article includes a ceramic material and features a machined surface that is characteristic of cold ablation laser machining, and the machined surface exhibits no visible oxidation. A laser machining apparatus and technique is based on cold-ablation, but is modified or augmented with an inert assist gas to minimize deleterious surface modifications and mitigate oxide formation associated with laser machining.

An article includes a ceramic material and features a machined surface that is characteristic of cold ablation laser machining, and the machined surface exhibits no visible oxidation. A laser machining apparatus and technique is based on cold-ablation, but is modified or augmented with an inert assist gas to minimize deleterious surface modifications and mitigate oxide formation associated with laser machining.

A method for shaping a thin-film photovoltaic cell module from a photovoltaic cell sheet according to a predetermined contour of the module, where the cell sheet includes a flexible substrate based on a polymer or metal foil and a photovoltaic stack including one or more photo-active layers arranged on a front surface of the substrate. The method includes: providing the cell sheet, directing a laser beam towards a rear surface of the substrate; creating, by the laser beam, a trench in the rear surface, the trench shaped according to the contour such that the cell sheet is “divided” in a first portion within the contour and a second portion outside the contour; affixing a handling tool to one of the portions of the cell sheet on the rear surface of the substrate; selectively separating the portions by displacing the handling tool and one portion relative to the other portion.

A method for shaping a thin-film photovoltaic cell module from a photovoltaic cell sheet according to a predetermined contour of the module, where the cell sheet includes a flexible substrate based on a polymer or metal foil and a photovoltaic stack including one or more photo-active layers arranged on a front surface of the substrate. The method includes: providing the cell sheet, directing a laser beam towards a rear surface of the substrate; creating, by the laser beam, a trench in the rear surface, the trench shaped according to the contour such that the cell sheet is “divided” in a first portion within the contour and a second portion outside the contour; affixing a handling tool to one of the portions of the cell sheet on the rear surface of the substrate; selectively separating the portions by displacing the handling tool and one portion relative to the other portion.

A method for manufacturing a display device including a display panel having a folding area to be folded along a virtual folding axis and first and second non-folding areas adjacent to both sides of the folding area, and a window disposed on the display panel, the method including preparing a mother substrate having an effective area and a non-effective area divided by a cutting line, performing a first laser process along a first cutting line disposed in the first non-folding area, performing a second laser process along a second cutting line disposed in the second non-folding area, and performing a third laser process along a third cutting line disposed in the folding area, in which one end of the third cutting line overlaps a first end of the first cutting line, and the other end of the third cutting line overlaps a first end of the second cutting line.

A laser beam irradiation unit of a laser processing apparatus includes a first splitting unit that causes a laser beam emitted from a laser oscillator to branch into a first optical path and a second optical path, a first beam condenser that focuses the laser beam having been introduced to the first optical path, and a second beam condenser that focuses the laser beam having been introduced to the second optical path. The laser beam irradiation unit further includes a second splitting unit on the first optical path between the first splitting unit and the first beam condenser that splits the laser beam into at least two laser beams, and a laser beam scanning unit on the second optical path between the first splitting unit and the second beam condenser that executes scanning with the laser beam and introduces the laser beam to the second beam condenser.

Discussed is an electrode manufacturing method, in which laser ablation is performed prior to cutting an electrode sheet so that a processing speed of cutting the electrode sheet by using laser is increased, and an electrode forming device for performing same.