公开(公告)号：US11435231B2

公开(公告)日：2022-09-06

申请号：US16701409

申请日：2019-12-03

Applicant: Samsung Display Co., Ltd.

Inventor： Juneyoung Lee ,  Hoi Sik Moon ,  Hyungwoo Yim ,  Jae-Seob Chung ,  Minyup Chae

IPC: G09G3/00 ,  G01J3/50 ,  G01J1/42 ,  G09G3/36 ,  G01J3/46 ,  G01M11/02 ,  H04N5/372 ,  H04N9/04 ,  H04N5/353 ,  G02F1/13

Abstract: A vision inspection apparatus includes an inspection controller which displays a grid pattern with a plurality of gray levels on a display panel, an imaging converter which drives a charge-coupled device with a predetermined or set exposure-time and converts the grid pattern displayed on the display panel into a grid pattern signal, a charge calculator which calculates a charge amount per unit time for each color of a reference gray level using a reference gray level signal, included in the grid pattern signal, and the set exposure-time, and an exposure-time calculator which calculates an optimum exposure-time for each color of the reference gray level based on a target charge amount of the reference gray level.