Invention Grant
- Patent Title: Light emitting element drive circuit and light emitting device
- Patent Title (中): 发光元件驱动电路及发光元件
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Application No.: US13963459Application Date: 2013-08-09
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Publication No.: US09124370B2Publication Date: 2015-09-01
- Inventor: Mariko Kase , Yukito Tsunoda
- Applicant: FUJITSU LIMITED
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: JP2012-239180 20121030
- Main IPC: H04N9/28
- IPC: H04N9/28 ; H04N3/233 ; H01J31/20 ; H04B10/50 ; H01S5/042 ; H01S5/062 ; H01S5/183

Abstract:
A light emitting element drive circuit includes: a plurality of signal paths that respectively propagate a plurality of signals obtained by branching an input signal, a plurality of filters different in a frequency band to pass a signal; one or more amplifiers configured to amplify a signal, one or more delay circuits configured to delay a signal, and an addition circuit that adds a plurality of signals, the filter different in the frequency band being arranged in each of the plurality of signal paths, the delay circuit being arranged in one or more of the plurality of signal paths relatively low in the frequency band, the amplifier being arranged in one or more of the plurality of signal paths relatively high in the frequency band, and an output end of each of the plurality of signal paths being coupled to the addition circuit.
Public/Granted literature
- US20140117873A1 LIGHT EMITTING ELEMENT DRIVE CIRCUIT AND LIGHT EMITTING DEVICE Public/Granted day:2014-05-01
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