US 12,094,407 B2
Electro-optical device, electronic apparatus and driving method
Yoichi Momose, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 27, 2022, as Appl. No. 17/953,942.
Claims priority of application No. 2021-157606 (JP), filed on Sep. 28, 2021.
Prior Publication US 2023/0097462 A1, Mar. 30, 2023
Int. Cl. G09G 3/3233 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/3233 (2013.01) [G09G 3/2007 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/06 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0257 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electro-optical device, comprising:
a plurality of digital scanning lines;
a digital signal line; and
a plurality of pixel circuits that are each coupled to a digital scanning line included in the plurality of digital scanning lines, and the digital signal line, wherein
each of the pixel circuits includes
a light-emitting element, and
a digital driving circuit that performs digital driving, the digital driving in which, when the pixel circuit is selected by the digital scanning line, display data is written to selected pixel circuit from the digital signal line, and a drive current is supplied to the light-emitting element of selected pixel circuit in an on-period of a length corresponding to a gray scale value of the display data, and a field that is a period in which one image is formed includes an all-pixels-light-off period in which the plurality of pixel circuits turn off the light-emitting element, and a digital driving period in which the digital driving circuit performs the digital driving after the all-pixels-light-off period, and wherein
an i-th pixel circuit among a first pixel circuit to a k-th pixel circuit that are the plurality of pixel circuits is coupled to an i-th digital scanning line among a first digital scanning line to a k-th digital scanning line that are the plurality of digital scanning lines, k being an integer equal to or greater than 2, i being an integer from 1 to k,
in the all-pixels-light-off period, the first digital scanning line to the k−1-th digital scanning line are sequentially selected, the display data of the image displayed in the field is written to the first pixel circuit to the k−1-th pixel circuit from the digital signal line, and
in the digital driving period, the first pixel circuit to the k−1-th pixel circuit perform the digital driving based on the display data written in the all-pixels-light-off period.