Patent ID: 7482552

Claim:
A silicon crystallization method using a laser crystallizing device having a mask divided into at least first and second regions having open parts of the same shape at different positions, a light-shielding pattern selectively opening one region of the mask and blocking the other region of the mask and a stage translating a substrate, comprising: providing the substrate on the stage; opening the first region and blocking the second region by using the light-shielding pattern and irradiating one block of the substrate with a laser through the mask, wherein the block of the substrate corresponds to the same region where the different regions of the mask are positioned for crystallization using the laser irradiation, wherein one block has a width corresponding to the length of the open part, and has a length corresponding to a total width of the open parts from the first open part to the final open part, wherein the length direction of the open part in each region of the mask extends in the X-axis direction; translating the stage along the X-axis direction to the right and then irradiating a next block of the substrate with a laser using the first region of the mask, wherein the stage is translated a distance corresponding to the length of the open part in the region of the mask; changing the translation direction of the stage, translating the stage along the X-axis direction to the left, opening the second region and blocking the first region, and irradiating the substrate with a laser through the mask;