US 12,449,684 B2
Liquid crystal device, electronic apparatus, and physical property measurement method for liquid crystal layer
Shinsuke Fujikawa, Chino (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 29, 2022, as Appl. No. 17/956,058.
Claims priority of application No. 2021-160804 (JP), filed on Sep. 30, 2021.
Prior Publication US 2023/0099587 A1, Mar. 30, 2023
Int. Cl. G01R 27/28 (2006.01); G02F 1/13 (2006.01); G02F 1/1333 (2006.01); G09G 3/00 (2006.01); G09G 3/36 (2006.01); G03B 21/00 (2006.01)
CPC G02F 1/1309 (2013.01) [G02F 1/133308 (2013.01); G09G 3/006 (2013.01); G09G 3/36 (2013.01); G03B 21/006 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A liquid crystal device comprising:
a first electrode;
a second electrode;
a liquid crystal layer to which a drive voltage is applied in each first refresh period of time of the liquid crystal layer; and
a measurement circuit configured to apply an inspection voltage to the liquid crystal layer between the first electrode and the second electrode, and measure a voltage potential of the first electrode after a period of time, that is longer than the first refresh period, has elapsed after the application of the inspection voltage is stopped.