US 12,154,468 B2
Display device
Naoki Shiobara, Sakai (JP); Masafumi Ueno, Sakai (JP); Masaaki Moriya, Sakai (JP); Masafumi Kawai, Sakai (JP); and Mohammad Reza Kazemi, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 18/288,271
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed May 21, 2021, PCT No. PCT/JP2021/019278
§ 371(c)(1), (2) Date Oct. 25, 2023,
PCT Pub. No. WO2022/244220, PCT Pub. Date Nov. 24, 2022.
Prior Publication US 2024/0221551 A1, Jul. 4, 2024
Int. Cl. G09G 3/00 (2006.01); G09G 3/3233 (2016.01)
CPC G09G 3/006 (2013.01) [G09G 3/3233 (2013.01); G09G 2300/0842 (2013.01); G09G 2320/041 (2013.01); G09G 2320/045 (2013.01); G09G 2330/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a plurality of pixel circuits;
a temperature sensor configured to measure a temperature of the display panel;
a characteristics measuring unit configured to obtain a measurement value related to a characteristic of an element in the plurality of pixel circuits by passing an electric current through the plurality of pixel circuits;
a correction value computation unit configured to determine a correction value for a temporal change based on the measurement value;
a correction processing unit configured to obtain a correction voltage value by correcting a video signal based on the correction value; and
a display control unit configured to cause a voltage that has a value equal to the correction voltage value to be applied to the plurality of pixel circuits, wherein
the plurality of pixel circuits includes:
a light-emitting element, as the element; and
a drive transistor configured to control an electric current that flows in the light-emitting element, and
the characteristics measuring unit is further configured to:
obtain the measurement value when the temperature is in a predetermined temperature range,
forgo obtaining the measurement value when the temperature is out of the predetermined temperature range,
obtain, based on the correction value, a progress level value for a temporal change of the plurality of pixel circuits on which a measurement is to be performed, and
narrow down the predetermined temperature range with a progress of the temporal change.