Patent ID: 8293065

Claim:
An etching apparatus comprising: a robot allowing a substrate to be mounted thereon and movable vertically up and down; an etching cassette to fix the substrate loaded by the robot; a cassette fixing unit to fix at least one etching cassette and rotated at a pre-set angle to allow the substrate to be disposed perpendicular to the ground; an etching unit to etch the substrate disposed perpendicular to the ground by the cassette fixing unit; a plurality of supports disposed in at least both sides of the etching cassette to support the substrate loaded by the robot; a plurality of clampings disposed in at least both sides of the etching cassette to fix the loaded substrate; a clamping driving unit to rotate the plurality of clampings to fix the substrate; connectors installed at the clamping driving unit to fix the plurality of clampings; a fixing pin to fix one end portion of the clamping to the clamping driving unit; a rotatable pin to rotatably fix the clamping to the etching cassette; and a guide groove defined on the etching cassette to allow the rotatable pin to move therealong, wherein the movement of the clamping driving unit is converted to a rotation of the plurality of clampings by moving the rotatable pin along the guide groove.