Method for manufacturing glass cliche using laser etching and apparatus for laser irradiation therefor
A method for manufacturing a glass plate using laser etching includes a dipping step for dipping a glass plate, which will be etched, into an etching solution, a patterning step for irradiating laser to the glass plate dipped in the etching solution to form a pattern therein, and a washing step for washing the patterned glass plate. This method allows making a plate with a high aspect ratio and fine line widths in comparison to a conventional plate manufacturing method using photoresist for etching, and also ensures more efficient energy consumption and higher etching efficiency rather than an etching method using laser only.
1. A method for manufacturing a glass plate using laser etching, comprising:
a dipping step for dipping a glass plate, which will be etched, into an etching solution which is at least one solution selected from compounds containing hydrofluoric acid, ammonium fluoride or BOE (buffered oxide etch) solution;
an input step for receiving image information of a pattern to be formed;
a calculating step for calculating area information of a laser irradiation surface corresponding to the image information;
an irradiating step for irradiating laser having differential irradiation areas according to irradiation time based on the calculation area information to form a pattern; and
a washing step for washing the patterned glass plate,
wherein, in the irradiating step, a pattern is formed by an irradiating laser whose irradiation area is decreased as the irradiation time progresses within the same etching step.
2. The method for manufacturing a glass plate using laser etching according to claim 1 ,
wherein, in the irradiating step, the pattern is formed by means of a plurality of laser irradiation surfaces applied to the glass plate.
3. The method for manufacturing a glass plate using laser etching according to claim 2 ,
wherein the pattern formed by the plurality of irradiation surfaces is made using a mask having a laser transmission pattern identical to the pattern to be formed on the glass plate.