公开(公告)号：US12117392B2

公开(公告)日：2024-10-15

申请号：US18230441

申请日：2023-08-04

Applicant: ASAHI KASEI MICRODEVICES CORPORATION

Inventor： Toshiaki Fukunaka ,  Hiroyuki Kato

IPC: G01N21/3504 ,  G01N15/06 ,  G01N15/075 ,  G01N21/27

CPC classification number: G01N21/3504 ,  G01N15/06 ,  G01N15/075 ,  G01N21/27 ,  G01N2201/12

Abstract: A gas sensor includes a light receiving element, a light emitting element, an integrated circuit, a lead frame, and a sealing member configured to seal these into a package. The lead frame includes at least one die pad portion and a plurality of terminal portions, the die pad portion includes a first region having a first thickness and a second region having a second thickness thinner than the first thickness, the integrated circuit is arranged on the second region of the die pad portion, the light emitting element is electrically connected to at least one of the plurality of terminal portions, the light receiving element is electrically connected to the integrated circuit and is arranged on the opposite side to the light emitting element with the integrated circuit interposed therebetween, and the integrated circuit is electrically connected to at least one of the plurality of terminal portions.

公开(公告)号：US11709130B2

公开(公告)日：2023-07-25

申请号：US17494924

申请日：2021-10-06

Applicant: ASAHI KASEI MICRODEVICES CORPORATION

Inventor： Edson Gomes Camargo ,  Hiroyuki Kato

IPC: G01N21/3504 ,  G01N33/00 ,  G01K13/00

CPC classification number: G01N21/3504 ,  G01K13/00 ,  G01N33/0027 ,  G01N2201/12753

Abstract: Signal output apparatus and concentration measurement system has a light receiving unit and an interface unit provided at a support unit. Light receiving unit receives infrared rays emitted to a measurement target substance, and outputs a detection signal according to received infrared rays. Storage unit stores a parameter according to a characteristic of at least one of a plurality of components including the light receiving unit, the parameter being used for concentration computation of the measurement target substance, as a calibration parameter. Interface unit outputs an output signal including a calibration parameter signal according to the calibration parameter input from the storage unit and a signal based on the detection signal input from the light receiving unit to a signal computation processing unit, without executing the concentration computation. The signal output apparatus corrects a deviation caused by a characteristic variation of each apparatus to realize concentration measurement with high accuracy.

公开(公告)号：US11747273B2

公开(公告)日：2023-09-05

申请号：US17485585

申请日：2021-09-27

Applicant: ASAHI KASEI MICRODEVICES CORPORATION

Inventor： Toshiaki Fukunaka ,  Hiroyuki Kato

IPC: G01N21/3504 ,  G01N15/06 ,  G01N21/27

CPC classification number: G01N21/3504 ,  G01N15/06 ,  G01N21/27 ,  G01N2015/0693 ,  G01N2201/12

Abstract: A gas sensor includes a light receiving element, a light emitting element, an integrated circuit, a lead frame, and a sealing member configured to seal these into a package. The lead frame includes at least one die pad portion and a plurality of terminal portions, the die pad portion includes a first region having a first thickness and a second region having a second thickness thinner than the first thickness, the integrated circuit is arranged on the second region of the die pad portion, the light emitting element is electrically connected to at least one of the plurality of terminal portions, the light receiving element is electrically connected to the integrated circuit and is arranged on the opposite side to the light emitting element with the integrated circuit interposed therebetween, and the integrated circuit is electrically connected to at least one of the plurality of terminal portions.