Title:
CURRENT WAVEFORM GENERATION CIRCUIT AND LIGHT EMITTING ELEMENT DRIVE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2021/060280
Kind Code:
A1
Abstract:
This current waveform generation circuit comprises: a current mirror unit (CMa) including a mirror source transistor (Tr0) which is a current mirror source, and a plurality of mirror destination transistors (Tr1 to Tr8 ...), which are current mirror destinations of the mirror source transistor (Tr0) while being electrically connected to a current mirror path; a switching unit (SWa) which changes the number of transistors, which are effective as mirror destination transistors electrically connected to the current mirror path, among the plurality of mirror destination transistors (Tr1 to Tr8 ...); and a control unit which controls, on the basis of the waveform shape of a current waveform to be generated, the number of transistors that are effective as mirror destination transistors electrically connected by the switching unit (SWa), wherein the output current of the current mirror unit (CMa) is output.
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Inventors:
TABATA MITSUSHI (JP)
MASUDA TAKASHI (JP)
SUZUKI DAISUKE (JP)
MASUDA TAKASHI (JP)
SUZUKI DAISUKE (JP)
Application Number:
PCT/JP2020/035810
Publication Date:
April 01, 2021
Filing Date:
September 23, 2020
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
H03B28/00; H03K4/02; H03K17/687
Foreign References:
| JP2010118973A | 2010-05-27 | |||
| JP2015139081A | 2015-07-30 | |||
| JP2010109097A | 2010-05-13 | |||
| JPS6198003A | 1986-05-16 | |||
| US20090051576A1 | 2009-02-26 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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