US 11,656,390 B2
Method of manufacturing module having multiple pattern areas, module having multiple pattern areas according to the method, and method of manufacturing diffraction grating module or mold for diffraction grating module
Jeong Ho Park, Daejeon (KR); Bu Gon Shin, Daejeon (KR); Eun Kyu Her, Daejeon (KR); Jung Hwan Yoon, Daejeon (KR); and So Young Choo, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 16/636,469
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Aug. 1, 2018, PCT No. PCT/KR2018/008760
§ 371(c)(1), (2) Date May 5, 2020,
PCT Pub. No. WO2019/035579, PCT Pub. Date Feb. 21, 2019.
Claims priority of application No. 10-2017-0104985 (KR), filed on Aug. 18, 2017.
Prior Publication US 2020/0271836 A1, Aug. 27, 2020
Int. Cl. G02B 5/18 (2006.01)
CPC G02B 5/1847 (2013.01) [G02B 5/1819 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of manufacturing a module having multiple pattern areas to manufacture a diffraction grating module including a first diffraction grating element and a second diffraction grating element having different diffraction grating patterns, the method comprising:
(a) disposing a first substrate having a first pattern on a first base substrate;
(b) forming a first cutting line on the first substrate, wherein a first layout of the first cutting line corresponds to a first diffraction grating element;
(c) forming a second cutting line on the first substrate, wherein a second layout of the second cutting line corresponds to a second diffraction grating element;
(d) removing any one of a first area defined by the first cutting line and a second area defined by the second cutting line from the first substrate to form a removed area on the first substrate;
(e) disposing a second base substrate having a second pattern different from the first pattern in the removed area, the second base pattern having a layout corresponding to the removed area of the first substrate; and
(f) removing the first substrate from the base substrate without removing the first area and the second area.