US 12,013,547 B2
Optical module, electro-optical device and image display device
Yuiga Hamade, Matsumoto (JP); and Takumi Kodama, Chino (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jan. 28, 2022, as Appl. No. 17/586,952.
Claims priority of application No. 2021-012993 (JP), filed on Jan. 29, 2021.
Prior Publication US 2022/0244554 A1, Aug. 4, 2022
Int. Cl. G02B 27/12 (2006.01); G09G 3/34 (2006.01)
CPC G02B 27/126 (2013.01) [G09G 3/344 (2013.01); G09G 2310/06 (2013.01); G09G 2310/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An optical module, comprising:
a first electro-optical device having
a first light-emitting element emitting light including a first wavelength region and
a first light-emitting control transistor provided corresponding to the first light-emitting element, a source or drain of the first light-emitting control transistor being electrically coupled to an anode of the first light-emitting element;
a second electro-optical device having
a second light-emitting element emitting light including a second wavelength region shorter than the first wavelength region and
a second light-emitting control transistor provided corresponding to the second light-emitting element, a source or drain of the second light-emitting control transistor being electrically coupled to an anode of the second light-emitting element; and
a prism configured to synthesize light emitted from the first electro-optical device, and light emitted from the second electro-optical device, wherein
a first period in which the first light-emitting control transistor is in an ON-state in one frame is shorter than a second period in which the second light-emitting control transistor is in an ON-state in the one frame.