US 12,072,259 B2
Resolution measurement apparatus and resolution measurement method using the same
Sanghui Park, Hwaseong-si (KR); and Jinwook Lee, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jul. 6, 2021, as Appl. No. 17/367,785.
Claims priority of application No. 10-2020-0111939 (KR), filed on Sep. 2, 2020.
Prior Publication US 2022/0065742 A1, Mar. 3, 2022
Int. Cl. G01M 11/02 (2006.01); G02B 7/02 (2021.01); G01N 21/17 (2006.01)
CPC G01M 11/0207 (2013.01) [G02B 7/02 (2013.01); G01N 2021/178 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A resolution measurement apparatus, comprising:
a stage configured to receive a display module, wherein the display module comprises an optical part,
wherein the stage comprises an opening that overlaps the optical part, when viewed in a plan view, when the display module is disposed on the stage;
a plurality of cameras disposed above the stage, and disposed above the display module when the display module is disposed on the stage,
wherein the plurality of cameras are separate and distinct from the display module;
a light source disposed under the stage,
wherein the light source overlaps the opening when viewed in the plan view; and
a lens disposed between the light source and the stage,
wherein the lens overlaps the opening when viewed in the plan view,
wherein the optical part overlaps the lens, when viewed in the plan view, when the display module is disposed on the stage; and
a controller configured to measure a resolution of the optical part by using information captured through the cameras.