Method and apparatus for treating substrate

An apparatus for treating a substrate, the apparatus comprising:

• a housing having an interior space;
• a chuck configured to support and rotate the substrate in the interior space;
• a laser configured to apply a pulsed laser to remove a film on the substrate supported on the chuck;
• a scanner configured to measure thickness of the film on the substrate, the scanner being located in a fixed position above the substrate;
• and
• a controller configured to control the laser and the scanner,
• wherein the controller includes:
• a recipe memory in which treatment conditions for removing the film on the substrate are recorded;
• and
• a processor configured to read the treatment conditions from the recipe memory and output a control signal to control pulse energy of the pulsed laser, based on the read treatment conditions,
• wherein the processor:
• reads the treatment conditions from the recipe memory depending on the thickness of the film measured by the scanner;
• and
• outputs the control signal to control the pulse energy, based on the treatment conditions read from the recipe memory,
• wherein the controller is programmed to cause the scanner to measure the thickness of the film on the substrate before removing the film on the substrate using the pulsed laser,
• wherein the film includes a first film having a first type and a second film having a second type different from the first type of first film, the scanner identifying the first type and the second type during scanning the film,
• wherein the controller is further programmed to, while the chuck is rotating, in real time continuously adjust the pulse energy based on the thickness of the film measured by the scanner and a type of the film being the first type or the second type, and
• wherein the controller is further programmed to:
• while removing the first film, read a first ablation energy, by which the first film is completely removed, from the recipe memory depending on a thickness of the first film and the first type of the first film measured by the scanner among the treatment conditions, and output the control signal to control the pulse energy, based on the first ablation energy read from the recipe memory;
• and
• while removing the second film, read a second ablation energy, by which the second film is completely removed, from the recipe memory depending on a thickness of the second film and the second type of the second film measured by the scanner among the treatment conditions, and output the control signal to control the pulse energy, based on the second ablation energy read from the recipe memory.