JP6751156B2 - センサ用配線基板、センサ用パッケージおよびセンサ装置 - Google Patents
センサ用配線基板、センサ用パッケージおよびセンサ装置 Download PDFInfo
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Classifications
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
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- G01N29/02—Analysing fluids
- G01N29/022—Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices
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- G01N29/22—Details, e.g. general constructional or apparatus details
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- G01N29/2425—Probes using optoacoustic interaction with the material, e.g. laser radiation, photoacoustics optoacoustic fluid cells therefor
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Description
図1は、第1実施形態に係るガスセンサ用配線基板1、ガスセンサ用パッケージ10およびガスセンサ100を示す図であり、図1Aは分解斜視図であり、図1Bは、断面図である。なお、図1Aの分解斜視図では、第1蓋体4、第2蓋体6およびカバー体5を分離した分解斜視図である。
図7は、第7実施形態に係るガスセンサ用配線基板1F、ガスセンサ用パッケージ10Fおよびガスセンサ100Fを示す図であり、図7Aは分解斜視図であり、図7Bは、断面図である。なお、図7Aの分解斜視図では、第1蓋体4、第2蓋体6およびカバー体5を分離した分解斜視図である。
本実施形態では、第1収容凹部2a内の検出用ガスで発生した音波は、ほぼ全てマイクロフォン素子20によって受信される。また、検出空間11内において被検出物質が赤外線を吸収して発する音波は、第1蓋体4によって遮蔽される。そのため、本実施形態のようなガスセンサ100Fは、検出空間11で発生した音波を第1収容凹部2a内のマイクロフォン素子20で受信する場合に比較して、より検出精度の高いものとなる。
1F,1G,1H,1J,1K,1L,1M ガスセンサ用配線基板
2 基体
2a 第1収容凹部
2b 第2収容凹部
2c 一方主面(第1面)
2d 他方主面(第2面)
2e 側面
3 接続配線
3a 第1接続端子
3b 第2接続端子
3c 外部接続端子
3d 内部配線
4 第1蓋体
5 カバー体
6 第2蓋体
6a 絞り部材
6a1 絞り孔
6b バンドパスフィルタ
7 第1伝熱部材
7a,8a 露出部分
8 第2伝熱部材
9 反射部材
10,10A,10B,10C,10D,10E,10F,
10G,10H,10J,10K,10L,10M ガスセンサ用パッケージ
11 検出空間
12 低熱伝導部
20 マイクロフォン素子
21 赤外線発光素子
100,100A,100B,100C,100D,100E,
100F,100G,100H,100J,100K,100L,
100M ガスセンサ
Claims (15)
- 複数の誘電体層が積層されて成る、板状の基体であって、音響素子を収容する第1収容凹部および赤外線発光素子を収容する第2収容凹部が、第1面に設けられている基体と、
前記第1収容凹部内に配設される、音響素子と電気的に接続する第1接続端子、前記第2収容凹部内に配設される、赤外線発光素子と電気的に接続する第2接続端子、外部回路と電気的に接続する外部接続端子、ならびに前記第1接続端子および前記第2接続端子を前記外部接続端子と電気的に接続する内部配線を含む接続配線と、を備え、
前記第1収容凹部の深さと前記第2収容凹部の深さとが異なることを特徴とするセンサ用配線基板。 - 前記第2収容凹部の深さが、前記第1収容凹部の深さよりも深いことを特徴とする請求項1記載のセンサ用配線基板。
- 前記誘電体層よりも熱伝導性が高い第1伝熱部材であって、前記基体の前記第1収容凹部と前記第2収容凹部との間に埋設され、一部が前記基体の前記第1面とは反対側の第2面および前記基体の側面の少なくとも一方に露出する第1伝熱部材をさらに備えることを特徴とする請求項1または2記載のセンサ用配線基板。
- 前記誘電体層よりも熱伝導性が高い第2伝熱部材であって、前記第2収容凹部と前記基体の前記第1面とは反対側の第2面との間および前記基体の側面との間の少なくとも一方に埋設され、一部が前記基体の側面および前記基体の前記第2面の少なくとも一方に露出する第2伝熱部材をさらに備えることを特徴とする請求項1〜3のいずれか1つに記載のセンサ用配線基板。
- 複数の誘電体層が積層されて成る、板状の基体であって、音響素子を収容する第1収容凹部および赤外線発光素子を収容する第2収容凹部が、第1面に設けられている基体と、
前記第1収容凹部内に配設される、音響素子と電気的に接続する第1接続端子、前記第2収容凹部内に配設される、赤外線発光素子と電気的に接続する第2接続端子、外部回路と電気的に接続する外部接続端子、ならびに前記第1接続端子および前記第2接続端子を前記外部接続端子と電気的に接続する内部配線を含む接続配線と、
前記誘電体層よりも熱伝導性が低い低熱伝導部であって、前記基体の前記第1収容凹部と前記第2収容凹部との間、および前記第2収容凹部と前記基体の側面との間に配設される低熱伝導部と、を備えることを特徴とするセンサ用配線基板。 - 前記低熱伝導部は、断面視において、一端部が前記基体の前記第1面と前記第2収容凹部の底面との間に位置しており、他端部が前記基体の前記第1面とは反対側の第2面まで延びていることを特徴とする請求項5記載のセンサ用配線基板。
- 前記低熱伝導部は、前記第1面から前記第1面とは反対側の第2面にわたって配設されることを特徴とする請求項5記載のセンサ用配線基板。
- 前記低熱伝導部は、空隙部分を有することを特徴とする請求項5〜7のいずれか1つに記載のセンサ用配線基板。
- 請求項1〜8のいずれか1つに記載のセンサ用配線基板と、
前記基体の前記第1面との間に空間を設けて覆うカバー体であって、前記空間に気体状の被検出物質が導入されるカバー体と、を備えることを特徴とするセンサ用パッケージ。 - 前記第1収容凹部の開口を塞ぐ、赤外線を透過可能な第1蓋体と、
前記第1収容凹部内に封入される、赤外線を吸収することで音波を発生する検出用ガスと、をさらに備えることを特徴とする請求項9記載のセンサ用パッケージ。 - 前記第2収容凹部の開口を塞ぐ、赤外線を透過可能な第2蓋体をさらに備えることを特徴とする請求項9または10に記載のセンサ用パッケージ。
- 前記第2蓋体に配設された、前記被検出物質および前記検出用ガスが吸収する波長領域の赤外線のみを透過させるバンドパスフィルタをさらに備えることを特徴とする請求項11記載のセンサ用パッケージ。
- 前記第2蓋体に配設された、前記第2収容凹部の開口より小さい絞り孔を有する絞り部材をさらに備えることを特徴とする請求項11または12に記載のセンサ用パッケージ。
- 前記カバー体の内面に配設された、赤外線発光素子から出射された赤外線を反射する反射部材をさらに備えることを特徴とする請求項9〜13のいずれか1つに記載のセンサ用パッケージ。
- 請求項9〜14のいずれか1つに記載のセンサ用パッケージと、
前記第1収容凹部に収容される音響素子と、
前記第2収容凹部に収容される赤外線発光素子と、を備えることを特徴とするセンサ装置。
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