US 11,942,014 B2
Display device and driving method
Masaaki Nishio, Sakai (JP); Hongbing Weng, Sakai (JP); Kazuo Nakamura, Sakai (JP); and Noriyuki Tanaka, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/767,379
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Oct. 10, 2019, PCT No. PCT/JP2019/040018
§ 371(c)(1), (2) Date Apr. 7, 2022,
PCT Pub. No. WO2021/070326, PCT Pub. Date Apr. 15, 2021.
Prior Publication US 2023/0274681 A1, Aug. 31, 2023
Int. Cl. G09G 3/20 (2006.01); G09G 3/30 (2006.01)
CPC G09G 3/2007 (2013.01) [G09G 3/30 (2013.01); G09G 2320/0233 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
pixel circuits provided in a matrix shape in a display region;
a scanning signal line, a data signal line, a first power supply voltage line, and a second power supply voltage line connected to the pixel circuits;
a scanning signal line drive circuit configured to apply a voltage to the scanning signal line;
a data signal line drive circuit configured to apply a voltage to the data signal line; and
a display control unit configured to control the scanning signal line drive circuit and the data signal line drive circuit,
wherein the pixel circuits include a display element, a holding capacitor, and a drive transistor, and are configured, when the scanning signal line is selected, such that a voltage of the data signal line corresponding to the selected scanning signal line is written in the holding capacitor as a data voltage,
the drive transistor includes a first conduction terminal connected to the first power supply voltage line, a second conduction terminal connected to the second power supply voltage line through the display element, and a control terminal connected to the first power supply voltage line through the holding capacitor,
the display control unit compares data values written in pixels in an n-th row corresponding to the selected scanning signal line with data values written in pixels in an (n−1)-th row being one row prior to the n-th row of the selected scanning signal line, and corrects the data voltage corresponding to the pixels in the n-th row in a case where a difference between the data values is equal to or greater than a threshold value, and
the data values are values obtained by extracting a portion of a gray scale data indicating a gray scale in each of the pixels.