Title:
SOLID-STATE IMAGE PICKUP ELEMENT
Document Type and Number:
WIPO Patent Application WO/2019/087472
Kind Code:
A1
Abstract:
The present invention improves stability of a current-voltage conversion circuit in a solid-state image pickup element that converts a photocurrent into a voltage signal. A photodiode photoelectrically converts inputted light, and generates a photocurrent. A conversion transistor converts the photocurrent into a voltage signal, and outputs the signal from the gate. A current source transistor supplies a predetermined constant current to an output signal line connected to the gate. A voltage supply transistor supplies, to the source of the conversion transistor, a constant voltage corresponding to the predetermined constant current supplied from the output signal line. A capacitor is connected between the gate and the source of the conversion transistor.
Inventors:
NIWA ATUSMI (JP)
Application Number:
PCT/JP2018/026802
Publication Date:
May 09, 2019
Filing Date:
July 18, 2018
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
H04N5/3745; H01L27/146
Foreign References:
| US20150194454A1 | 2015-07-09 | |||
| JP2009164681A | 2009-07-23 | |||
| US20140125994A1 | 2014-05-08 | |||
| JP2014187261A | 2014-10-02 | |||
| JP2016533140A | 2016-10-20 |
Other References:
See also references of EP 3576404A4
Attorney, Agent or Firm:
MARUSHIMA, Toshikazu (JP)
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