Method for improving lifespan of LCD of MSLA 3D printer
The present inventive concept relates to a method for improving a lifespan of a liquid crystal display (LCD) of a masked stereolithography (MSLA) 3D printer, the method including the steps of: slicing a three-dimensional (3D) image into two-dimensional (2D) images; outputting the 2D images to the LCD; calculating irradiation area coordinates of UV LEDs in accordance with the 2D images; and irradiating UV light of the UV LEDs on an area matching with the 2D images in accordance with the calculated irradiation area coordinates of the UV LEDs.
1. A method for improving a lifespan of a liquid crystal display (LCD) of a masked stereolithography (MSLA) 3D printer, the method comprising the steps of:
slicing a three-dimensional (3D) image into two-dimensional (2D) images;
outputting the 2D images to the LCD;
calculating irradiation area coordinates of UV LEDs in accordance with the 2D images;
irradiating UV light of the UV LEDs on an area matching with the 2D images in accordance with the calculated irradiation area coordinates of the UV LEDs; and
collecting and storing accumulation irradiation time data of the UV LEDs to calculate average irradiation time per area.
2. The method according to claim 1 , wherein the step of calculating the irradiation area coordinates of the UV LEDs is carried out by calculating a diagonal length from an area obtained by multiplying a width of the image with the greatest area among the 2D images by a height thereof and then calculating a radius of the diagonal length as the irradiation area.
3. The method according to claim 1 , wherein the 2D images are outputted to an LCD area in the shortest range of the accumulation irradiation time.