US 11,984,053 B2
Display device and method of driving display device
Hirohisa Yamada, Osaka (JP); Keisuke Kitano, Osaka (JP); and Yusuke Sakakibara, Osaka (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/915,079
Filed by SHARP KABUSHIKI KAISHA, Osaka (JP)
PCT Filed Apr. 8, 2020, PCT No. PCT/JP2020/015807
§ 371(c)(1), (2) Date Sep. 27, 2022,
PCT Pub. No. WO2021/205564, PCT Pub. Date Oct. 14, 2021.
Prior Publication US 2023/0186804 A1, Jun. 15, 2023
Int. Cl. G09G 3/00 (2006.01); G01R 31/26 (2020.01); G09G 3/32 (2016.01); H10K 59/12 (2023.01)
CPC G09G 3/006 (2013.01) [G01R 31/2635 (2013.01); G09G 3/32 (2013.01); G09G 2330/10 (2013.01); G09G 2330/12 (2013.01); H10K 59/12 (2023.02)] 9 Claims
OG exemplary drawing
 
1. A display device including a plurality of pixels each including at least one light-emitting element, the display device including
an inspection circuit configured to inspect a luminance condition of the at least one light-emitting element, the inspection circuit comprising:
a voltage sweep circuit configured to sweep a voltage to the at least one light-emitting element;
a measuring circuit configured to sweep a voltage to the at least one light-emitting element and to measure a current value that flows in the at least one light-emitting element in response to a voltage value applied;
a computation circuit configured to compute a first derivative value of the current value with respect to the voltage value, the first derivative value representing voltage dependence of a first derivative of the current value;
a peak determination circuit configured to determine whether the first derivative value has a local maximum value; and
a processing circuit configured to blacken the at least one light-emitting element based on a result of the determination made by the peak determination circuit.