Title:
回路装置及び電子機器
Document Type and Number:
Japanese Patent JP6409501
Kind Code:
B2
Abstract:
An output transistor of an output circuit that outputs a large current may have a partial fault, but such a partial fault may not be detected because the transistor is very large. To address this, the invention provides an output circuit in which one output transistor is divided into a plurality of transistors, and a plurality of pads that are connected correspondingly to the transistors are provided. Fault detection can be performed on the plurality of transistors by using each pad. At least some of the pads are connected to one same output terminal of the substrate or the like.
Inventors:
Atsushi Yamada
Hideyuki Akanuma
Katsumi Inoue
Hideyuki Akanuma
Katsumi Inoue
Application Number:
JP2014219026A
Publication Date:
October 24, 2018
Filing Date:
October 28, 2014
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H01L21/822; G01R31/28; H01L21/66; H01L27/04; H02P7/29
Domestic Patent References:
| JP2008160952A | ||||
| JP2000171517A | ||||
| JP61256741A | ||||
| JP2002277503A | ||||
| JP2002094004A | ||||
| JP2004208442A |
Attorney, Agent or Firm:
Kazuaki Watanabe
Keisuke Nishida
Satoshi Nakai
Keisuke Nishida
Satoshi Nakai