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Title:
PYROELECTRIC LIGHT DETECTION DEVICE AND ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2013148489
Kind Code:
A
Abstract:

To provide a pyroelectric light detection device that can suppress noise due to power source variations even when pyroelectric currents are output from a plurality of pyroelectric elements, and further to provide an electronic apparatus.

A pyroelectric light detection device includes: a sensor array that has pixels arranged in a matrix of N rows, where N is an integer of 1 or more, and M columns, where M is an integer of 2 or more, and pyroelectric photodetectors provided on respective pixels arranged in the matrix of N rows and M columns; N row lines WL; and M column lines DL. Each of the pyroelectric photodetectors includes a pyroelectric body interposed between a first electrode and a second electrode. When two regions adjacent to each other in a row direction and/or in a column direction in the sensor array are defined as a first region and a second region, the pyroelectric photodetectors of all the pixels in the first region are polarized in a first polarization direction, and the pyroelectric photodetectors of all the pixels in the second region are polarized in a second polarization direction opposite to the first polarization direction.


Inventors:
HORIUCHI HIROSHI
Application Number:
JP2012009694A
Publication Date:
August 01, 2013
Filing Date:
January 20, 2012
Export Citation:
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Assignee:
SEIKO EPSON CORP
International Classes:
G01J1/02; G01J1/42; G01J5/34; G01J5/48; H01L27/144; H01L27/146; H01L37/02; H04N5/33
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Kazuhiko Miyasaka