CN108469305A - A kind of patch-type pyroelectric infrared sensor - Google Patents

A kind of patch-type pyroelectric infrared sensor Download PDF

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Publication number
CN108469305A
CN108469305A CN201810552999.9A CN201810552999A CN108469305A CN 108469305 A CN108469305 A CN 108469305A CN 201810552999 A CN201810552999 A CN 201810552999A CN 108469305 A CN108469305 A CN 108469305A
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CN
China
Prior art keywords
substrate
infrared sensor
pyroelectric infrared
patch type
type pyroelectric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810552999.9A
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Chinese (zh)
Inventor
胡建学
卢明达
程胜军
朱岳洲
夏前亮
林毅
邵赛艳
温旭杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CECT DEQING HUAYING ELECTRONICS Co Ltd
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CECT DEQING HUAYING ELECTRONICS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by CECT DEQING HUAYING ELECTRONICS Co Ltd filed Critical CECT DEQING HUAYING ELECTRONICS Co Ltd
Priority to CN201810552999.9A priority Critical patent/CN108469305A/en
Publication of CN108469305A publication Critical patent/CN108469305A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/10Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
    • G01J5/34Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

The present invention provides a kind of patch type pyroelectric infrared sensor, the patch type pyroelectric infrared sensor includes forming closure by cover board and substrate, the support element and signal processing circuit that infrared-sensitive member is contained in the closure, fixes infrared-sensitive member;Wherein, cover board is infrared optics optical filter;The jamb surface and inner side of substrate are provided with the metal layer to form electro-magnetic screen layer;The middle part of substrate has the sunk part for forming certain receiving space;Support element and signal processing circuit are directly anchored to the surface of base plate recess portion;Base plate recess portion surface and bottom are both provided with pad, are electrically connected by via and cabling.Constitute it is a kind of miniaturization, low cost, the patch type pyroelectric infrared sensor with electromagnetic armouring structure.This patch type pyroelectric infrared sensor does not need traditional metal shell or labyrinth and has been saved the production time to reduce cost, and has excellent capability of electromagnetic shielding.

Description

A kind of patch-type pyroelectric infrared sensor
Technical field
The present invention relates to a kind of pyroelectric infrared sensor, specially a kind of patch-type pyroelectric infrared sensor.
Background technology
Pyroelectric infrared sensor is a kind of sensor utilizing detection infra-red radiation made of pyroelectric effect principle, energy It is defeated to be converted to electric signal after a series of actions such as filtered, amplification for the infrared ray that enough detection people or certain animals etc. launches Go out.
Currently, more typical traditional pyroelectric infrared sensor structure has the tube socket and pipe cap of enclosed construction on the market, pipe The infrared optics optical filter of cap upper surface is the window of saturating infrared ray, and heat is constituted together with the Fresnel Lenses on pipe cap Release the optical system of electric infrared sensor.It is provided with optical sensitive member in enclosed construction and fixes the support portion of optical sensitive member Part has field-effect tube below optical sensitive member and support member and fixes the substrate of the field-effect tube, is printed on substrate Make the circuit of each component electrical connection, the pin of three carbon steels or iron-nickel alloy material is extended downwardly inside tube socket.Its work It is that the infrared signal received is exported by analog signal after field-effect tube carries out impedance transformation by infrared-sensitive member as principle. There are the problems such as inconvenient, production efficiency is low, the window visual field is small.
In addition, in the current of electronics industry rapid development, electro-magnetic screen layer is the important means for preventing Contamination of Electromagnetic Wave.Mesh The more commonly used means of preceding pyroelectric infrared sensor are shielded using external metal shell, although this mode shielding Can good, price big but there is also weight, the shortcomings of being not easy adjusted design.
Invention content
In view of above-mentioned deficiency, the purpose of the present invention is to provide a kind of compact, it is compact-sized, easy to produce, have The patch type pyroelectric infrared sensor of stronger anti-radio frequency interference ability.
The present invention is achieved through the following technical solutions:
The patch type pyroelectric infrared sensor includes forming closure by cover board and substrate, receiving in the closure The support element and signal processing circuit for having infrared-sensitive member, fixing infrared-sensitive member;Wherein, cover board filters for infrared optics Piece;The frame top surface of substrate and inner side are provided with the metal layer to form electro-magnetic screen layer;The middle part of substrate, which has, forms one Determine the sunk part of receiving space;Support element and signal processing circuit are directly anchored to the surface of base plate recess portion;Substrate is recessed It falls into part surface and bottom is both provided with pad, be electrically connected by via and cabling.Constitute it is a kind of miniaturization, low cost, electrification The patch type pyroelectric infrared sensor of magnet shielding structure.
Preferably, the shape of the substrate and/or cover board is polygon or round.
Preferably, the metal layer of the jamb surface of the substrate with lower structure by being realized:The frame table of the substrate Face carries copper foil;Not oxidizable metal material is coated on the copper foil.
Preferably, the metal layer that the substrate inner side is equipped with lower structure by being realized:Pass through the bound edge that metallizes Form copper wall;The copper wall surface is coated with not oxidizable metal material.
Preferably, the base plate recess portion surface and bottom are both provided with pad, the substrate frame is provided with Several are used to be electrically connected the vertical through hole of substrate frame metal layer and base plate bottom pad.
Preferably, the vertical through hole inner wall is coated with metal layer, the through-hole uses filling holes with resin process filling, It is coated with metal layer again after resin leveling.
Preferably, the base plate bottom is provided with several external pads for constituting element pasted on surface.
Preferably, the infrared-sensitive member stated is unit or polynary infrared-sensitive member.
Preferably, being provided with the step for making the cover board be positioned relative to the substrate around the cover board Portion.
Preferably, the substrate is metallized ceramic substrate or epoxy resin pcb board, the cover board and substrate pass through Sealing medium seals;The sealing medium is electroconductive resin or high melting point solder.
The advantageous effect of technical solution of the pyroelectric infrared sensor of the present invention is:
Using internal shield layer structure, traditional metal shell is not needed, while significantly reducing cost, is had good The ability of electromagnetism interference;Traditional cover plate of outer casing and infrared fileter combination are substituted using monoblock type infrared fileter cover board, Simplify structure;It is encapsulated using patch form, easy to process, yields is higher, is suitable for the fields such as toy, number, security protection, market It has a extensive future.
Description of the drawings
Fig. 1 is the structure sectional view of the present invention;
1 is infrared-sensitive member, and 2 be signal processing circuit, and 3 be substrate, and 31 be cabling, and 32 be via, and 33 be pad, and 34 are Vertical through hole, 4 be cover board, and 41 be stage portion, and 5 be support element, and 6 be substrate jamb surface metal layer, and 7 be substrate inner side gold Belong to layer, 8 be sealing medium.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and detailed description:
The present invention, a kind of patch-type infrared sensor are illustrated with reference to Fig. 1, including is made of cover board 4 and substrate 3 Shell with enclosed construction contains infrared-sensitive member 1 in the enclosed construction, fixes 5 He of support element of infrared-sensitive member Signal processing circuit 2.Cover board 4 is arranged to can to transmit infrared ray and conductive;Substrate 3 is provided with one in the middle A sunk part forms certain receiving space;The frame top surface of substrate and inner side are provided with metal layer, form electromagnetic screen Cover layer;Infrared-sensitive member is fixed by support element 5, and support element 5 and signal processing circuit 2 are directly anchored to 3 sunk part of substrate Surface;Signal processing circuit 2 is technotron/signal condition unit etc.;The surface and bottom of 3 sunk part of substrate are all provided with It is equipped with pad 33, is electrically connected by internal via 32 and cabling 31.
The contour substrate has polygon or round shape.The substrate is metallized ceramic substrate or asphalt mixtures modified by epoxy resin Fat pcb board.The base plate bottom is formed with several external pads, constitutes element pasted on surface, passes through SMT automatic pasting techniques And reflow soldering process, it is applied to the assembling of various interlock circuits.The cover board shape has polygon or round shape.It is described Jamb surface carry copper foil.Not oxidizable metal material is coated on the copper foil.The inner side passes through metal Change bound edge and forms copper wall.The copper wall surface is coated with not oxidizable metal material.The substrate frame is provided with several A vertical through hole 34, for being electrically connected substrate metal layer and base plate bottom ground pad, to be grounded.Described is vertical logical Hole inner wall is coated with metal layer, and the through-hole uses filling holes with resin process filling, and metal layer is coated with again after resin leveling.Described Infrared-sensitive member is unit or polynary infrared-sensitive member.It is provided with around the cover board for making the cover board relative to institute State the stage portion 41 of substrate positioning.The cover board is infrared optics optical filter.The cover board and substrate passes through sealing medium 8 To seal.The sealing medium is electroconductive resin or high melting point solder.
In the present embodiment, as shown in Figure 1, substrate 3 is epoxy resin pcb board, jamb surface carries copper foil, on copper foil It is coated with not oxidizable metal material;Inner side forms copper wall by metal coating face, and Tong Bishang is also coated with not oxidizable gold Belong to material, form electro-magnetic screen layer, to reduce extraneous electromagnetic interference.Cover board 4 is plane infrared optics optical filter, embedded base Plate sunk part, and cemented with resin material, traditional cover board and optical filter are combined into one, structure is simplified, reduces into This.Signal processing circuit is technotron.Form sealing, the patch type rpyroelectric infrared of internally charged magnet shielding structure Sensor.
Above-described embodiment, only an example of the present invention is not the implementation for limiting the present invention and interest field, All technical solutions identical or equivalent with content described in the claims in the present invention should all include in the scope of the present invention.

Claims (10)

1. a kind of patch type pyroelectric infrared sensor, it is characterised in that:The patch type pyroelectric infrared sensor includes by covering Plate (4) and substrate (3) form closure, and infrared-sensitive first (1) is contained in the closure, fixes infrared-sensitive member (1) support element (5) and signal processing circuit (2);Wherein, cover board (4) is infrared optics optical filter;The frame of substrate (3) Top surface and inner side are provided with the metal layer to form electro-magnetic screen layer;The middle part of substrate (3), which has, forms certain receiving space Sunk part;Support element and signal processing circuit (2) are directly anchored to the surface of substrate (3) sunk part;Substrate (3) is recessed Part surface and bottom are both provided with pad (33), are electrically connected by via (32) and cabling (31).
2. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:The substrate (3) and/or lid The shape of plate (4) is polygon or round.
3. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:The frame of the substrate (3) The metal layer (6) on surface with lower structure by being realized:The jamb surface of the substrate (3) carries copper foil;It is plated on the copper foil There is not oxidizable metal material.
4. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:Substrate (3) private side The metal layer (7) that face is equipped with lower structure by being realized:By metallizing, bound edge forms copper wall;The copper wall surface is coated with not Oxidizable metal material.
5. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:Substrate (3) recessed portion Point surface and bottom are both provided with pad, and the substrate (3) frame is provided with several for being electrically connected substrate (3) frame gold Belong to the vertical through hole of layer and substrate (3) bottom land.
6. patch type pyroelectric infrared sensor according to claim 7, it is characterised in that:The vertical through hole inner wall It is coated with metal layer, the through-hole uses filling holes with resin process filling, and metal layer is coated with again after resin leveling.
7. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:Substrate (3) bottom is set It is equipped with several external pads for constituting element pasted on surface.
8. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:The infrared-sensitive member (1) it is that unit or polynary infrared-sensitive are first (1).
9. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:Around the cover board (4) It is provided with the stage portion (41) for making the cover board (4) be positioned relative to the substrate (3).
10. patch type pyroelectric infrared sensor according to claim 1, it is characterised in that:The substrate (3) is metal Change ceramic substrate (3) or epoxy resin pcb board, the cover board (4) and substrate (3) are sealed by sealing medium (8);It is described Sealing medium be electroconductive resin or high melting point solder.
CN201810552999.9A 2018-05-31 2018-05-31 A kind of patch-type pyroelectric infrared sensor Withdrawn CN108469305A (en)

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CN201810552999.9A CN108469305A (en) 2018-05-31 2018-05-31 A kind of patch-type pyroelectric infrared sensor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110108369A (en) * 2019-04-25 2019-08-09 东莞传晟光电有限公司 A kind of surface attaching type pyroelectric sensor and its installation method
CN112781734A (en) * 2020-12-18 2021-05-11 杭州麦乐克科技股份有限公司 Pyroelectric sensor and packaging method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201450592U (en) * 2009-06-06 2010-05-05 歌尔声学股份有限公司 Miniature microphone with circuit board frame structure
CN202188910U (en) * 2011-07-20 2012-04-11 郑国恩 Intelligent pyroelectric infrared ray sensor
CN102625907A (en) * 2009-08-17 2012-08-01 松下电器产业株式会社 Infrared sensor
CN102656430A (en) * 2009-12-18 2012-09-05 松下电器产业株式会社 Infrared sensor module
CN105698936A (en) * 2016-03-30 2016-06-22 南阳森霸光电股份有限公司 SMT intelligent pyroelectric infrared sensor
CN106455363A (en) * 2016-08-09 2017-02-22 华进半导体封装先导技术研发中心有限公司 Printed circuit board manufacturing method and printed circuit board
CN208399017U (en) * 2018-05-31 2019-01-18 中电科技德清华莹电子有限公司 A kind of patch-type pyroelectric infrared sensor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201450592U (en) * 2009-06-06 2010-05-05 歌尔声学股份有限公司 Miniature microphone with circuit board frame structure
CN102625907A (en) * 2009-08-17 2012-08-01 松下电器产业株式会社 Infrared sensor
CN102656430A (en) * 2009-12-18 2012-09-05 松下电器产业株式会社 Infrared sensor module
CN202188910U (en) * 2011-07-20 2012-04-11 郑国恩 Intelligent pyroelectric infrared ray sensor
CN105698936A (en) * 2016-03-30 2016-06-22 南阳森霸光电股份有限公司 SMT intelligent pyroelectric infrared sensor
CN106455363A (en) * 2016-08-09 2017-02-22 华进半导体封装先导技术研发中心有限公司 Printed circuit board manufacturing method and printed circuit board
CN208399017U (en) * 2018-05-31 2019-01-18 中电科技德清华莹电子有限公司 A kind of patch-type pyroelectric infrared sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110108369A (en) * 2019-04-25 2019-08-09 东莞传晟光电有限公司 A kind of surface attaching type pyroelectric sensor and its installation method
CN112781734A (en) * 2020-12-18 2021-05-11 杭州麦乐克科技股份有限公司 Pyroelectric sensor and packaging method thereof

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