Method and apparatus for cutting nonmetallic substrate by laser beam

Disclosed are an apparatus and a method for cutting a non-metal substrate. A laser device generates a first laser beam onto a cutting route formed in the non-metal substrate for heating the cutting route such that a scribe line is formed on the cutting route. The laser device also generates a second...

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Bibliographische Detailangaben
Hauptverfasser:	CHU TE-HO, NAM HYONG-UU, CHUN BEK-KYOON
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING GLASS MACHINE TOOLS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MINERAL OR SLAG WOOL NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PERFORMING OPERATIONS PHYSICS SEMICONDUCTOR DEVICES SOLDERING OR UNSOLDERING TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Disclosed are an apparatus and a method for cutting a non-metal substrate. A laser device generates a first laser beam onto a cutting route formed in the non-metal substrate for heating the cutting route such that a scribe line is formed on the cutting route. The laser device also generates a second laser beam, which is spaced by a predetermined distance from the first laser beam, such that a beam pattern is formed along a radiating route of the first laser beam. A cooling device forms a crack by applying a cooling fluid beam onto the cutting route formed between the first laser beam and the second laser beam. After applying the cooling fluid beam, the non-metal substrate is cut by using one beam pattern, to simplify an optical system. A great tensile force is generated in the scribe line, so the thick non-metal substrate can be completely cut at once.