US 12,002,427 B2
Projection device and method for controlling projection device
Yoichi Momose, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jan. 12, 2023, as Appl. No. 18/153,819.
Claims priority of application No. 2022-003541 (JP), filed on Jan. 13, 2022.
Prior Publication US 2023/0222977 A1, Jul. 13, 2023
Int. Cl. G09G 3/3233 (2016.01); G09G 3/00 (2006.01)
CPC G09G 3/3233 (2013.01) [G09G 3/002 (2013.01); G09G 2300/0814 (2013.01); G09G 2300/0852 (2013.01); G09G 2300/0871 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2340/0407 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A projection device, comprising:
a display panel including a pixel circuit including a first capacitance element and a second capacitance element, and a light-emitting element that emits light, having luminance corresponding to a current, in a predetermined direction, wherein in a first period, a voltage corresponding to a current supplied to the light-emitting element is held in the first capacitance element, in a light-out period after the first period, the light-emitting element is off, in a second period after the light-out period, a current corresponding to the voltage held in the first capacitance element is supplied to the light-emitting element, and a voltage corresponding to the current supplied to the light-emitting element is held in the second capacitance element; and
an optical path shifting element configured to shift an optical path of light emitted from the light-emitting element to a first and second optical paths, wherein shifting is performed from the first optical path to the second optical path in the light-out period, and the second optical path is maintained in the second period.