US 12,477,632 B2
Light-emitting device
Shota Ando, Kyoto (JP); Takahiro Matsuoka, Kyoto (JP); and Tatsuya Ohara, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Jul. 28, 2023, as Appl. No. 18/361,230.
Application 18/361,230 is a continuation of application No. PCT/JP2022/002088, filed on Jan. 21, 2022.
Claims priority of application No. 2021-013468 (JP), filed on Jan. 29, 2021.
Prior Publication US 2023/0371146 A1, Nov. 16, 2023
Int. Cl. H05B 45/30 (2020.01); H05B 45/325 (2020.01); H05B 45/40 (2020.01); H05B 47/16 (2020.01)
CPC H05B 45/325 (2020.01) [H05B 45/40 (2020.01); H05B 47/16 (2020.01)] 9 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a solid-state light-emitting element;
a plurality of driving capacitors; and
a switch,
wherein the solid-state light-emitting element, the plurality of driving capacitors, and the switch, are on or in a substrate,
wherein, when the switch is turned on, the switch is configured to discharge a charged electric charge of the plurality of driving capacitors to the solid-state light-emitting element through a plurality of driving current loops,
wherein the plurality of driving capacitors comprises a plurality of capacitors that are configured to store a driving electric charge for the solid-state light-emitting element and that are connected in parallel,
wherein each of the plurality of capacitors, the solid-state light-emitting element, and the switch form the plurality of driving current loops, and
wherein time constants of a plurality of discharge paths formed by the plurality of capacitors and the plurality of driving current loops coincide.