US 11,718,031 B2
Method for improving lifespan of LCD of MSLA 3D printer
Hee Jae Lee, Osan-si (KR); and Joon Ha Kim, Incheon (KR)
Assigned to HUVITZ CO., LTD.; and OSSVIS CO., LTD.
Filed by Huvitz Co., Ltd., Anyang-si (KR); and Ossvis Co., Ltd., Anyang-si (KR)
Filed on Feb. 21, 2022, as Appl. No. 17/676,810.
Claims priority of application No. 10-2021-0023740 (KR), filed on Feb. 23, 2021.
Prior Publication US 2022/0266515 A1, Aug. 25, 2022
Int. Cl. B29C 64/286 (2017.01); B33Y 10/00 (2015.01); B33Y 40/00 (2020.01); B29C 64/124 (2017.01); B29C 64/393 (2017.01); B33Y 50/02 (2015.01); B33Y 50/00 (2015.01); B29C 64/129 (2017.01); B29C 64/282 (2017.01); B33Y 30/00 (2015.01); B29C 64/386 (2017.01)
CPC B29C 64/286 (2017.08) [B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 40/00 (2014.12); B29C 64/129 (2017.08); B29C 64/282 (2017.08); B29C 64/386 (2017.08); B29C 64/393 (2017.08); B33Y 30/00 (2014.12); B33Y 50/00 (2014.12); B33Y 50/02 (2014.12)] 3 Claims
OG exemplary drawing
 
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.