LASER ABLATION APPARATUS AND METHOD FOR MANUFACTURING OPENING USING IT

摘要

PURPOSE: A laser etching apparatus and an aperture forming method using the same are provided to form a gap pattern on a rear passivation layer through a further simplified process using the laser etching technology in stead of photo etching technology in the manufacturing process of thin solar battery of high efficiency. CONSTITUTION: A stage part(160) supports the silicon substrate of solar battery formed with the rear passivation layer. A laser generator(110) generates the laser beam adjusted according to the passivation information. A beam forming unit(130) modifies the size and the shape of a spot of the laser beam according to the size and the shape of the aperture. A projection unit(150) concentrates the laser beam scanned by the scanning unit and irradiates the laser beam.