WO2009139029A1 - 自発光型センサ装置及びその製造方法 - Google Patents
自発光型センサ装置及びその製造方法 Download PDFInfo
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- WO2009139029A1 WO2009139029A1 PCT/JP2008/058694 JP2008058694W WO2009139029A1 WO 2009139029 A1 WO2009139029 A1 WO 2009139029A1 JP 2008058694 W JP2008058694 W JP 2008058694W WO 2009139029 A1 WO2009139029 A1 WO 2009139029A1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
- A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6825—Hand
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6838—Clamps or clips
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/028—Microscale sensors, e.g. electromechanical sensors [MEMS]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/04—Arrangements of multiple sensors of the same type
- A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/12—Manufacturing methods specially adapted for producing sensors for in-vivo measurements
Definitions
- the present invention relates to a technical field of a self-luminous sensor device capable of measuring, for example, a blood flow velocity and a manufacturing method thereof.
- this type of self-luminous sensor device there is a device that irradiates a living body with light such as laser light and calculates a blood flow velocity of the living body by a change in wavelength due to Doppler shift at the time of reflection or scattering (for example, (See Patent Documents 1 and 2).
- a light source such as a semiconductor laser for irradiating a living body with light in a housing and a light such as a photodiode for detecting light from the living body are typically used. Miniaturization is achieved by providing the detectors close to each other.
- a self-luminous sensor device light that should not be detected is detected by the photodetector, such as light that is directed directly to the photodetector without being irradiated on the living body, among light from the light source.
- it has a light-shielding structure to prevent this.
- a light shielding structure is realized, for example, in Patent Document 1 by providing a shielding plate between the semiconductor laser and the photodiode in the housing.
- the light shielding structure is anisotropic with respect to the silicon substrate. This is realized by separately arranging a semiconductor laser and a photodiode in each of the two recesses formed by performing the etching process, and forming a light shielding film on the inner surface of the recess.
- Patent Document 1 for example, in addition to the semiconductor laser and the photodiode, the above-described shielding plate, a reflecting plate for guiding light from the semiconductor laser to the living body, Since it is necessary to incorporate a relatively large number of parts including a reflector for guiding the light from the photodiode to the photodiode side, the number of processes increases, and a lot of time is required to adjust the position of these parts. It may be necessary. Further, with the technique disclosed in Patent Document 2, for example, a small sensor device having a size of several millimeters ⁇ several millimeters can be realized, but an anisotropic etching process is performed to form a recess in a silicon substrate. There is a risk that the time required for the process will increase, or the yield may decrease due to manufacturing variations caused by the anisotropic etching process.
- the present invention has been made in view of, for example, the above-described problems, is suitable for mass production, and is a small self-luminous sensor device that can detect a predetermined type of information such as blood flow velocity in a subject with high accuracy. It is another object of the present invention to provide a manufacturing method thereof.
- a self-luminous sensor device of the present invention is provided with a substrate, an irradiation unit that is disposed on the substrate and irradiates a subject with light, and is disposed on the substrate and the irradiated light.
- a light receiving unit for detecting light from the subject due to the front surface a front plate disposed on the front side where the subject is disposed with respect to the substrate so as to face the substrate, and on the substrate It is formed so as to surround each of the irradiation unit and the light receiving unit in plan view, and includes a light-shielding adhesive, and includes an adhesive unit that adheres the substrate and the front plate to each other.
- the self-luminous sensor device of the present invention at the time of detection, light such as laser light is irradiated, for example, onto a subject that is a part of a living body, for example, by an irradiation unit including a semiconductor laser. .
- the light from the subject resulting from the light irradiated on the subject is detected by a light receiving unit including a light receiving element, for example.
- light from the subject caused by the light irradiated on the subject means light reflected, scattered, diffracted, refracted, transmitted, Doppler shifted in the subject, and interference light due to those lights, It means light resulting from light irradiated on the subject.
- it Based on the light detected by the light receiving unit, it is possible to obtain predetermined information related to the subject, such as blood flow velocity.
- the front plate is made of, for example, a light-shielding plate-like member in which an exit port for passing light emitted from the irradiation unit and an entrance port for allowing light from the subject to pass are formed.
- the substrate on which the irradiation part and the light receiving part are formed and the front plate are bonded to each other by an adhesive part including a light-shielding adhesive.
- the adhesive portion is formed so as to surround each of the irradiation portion and the light receiving portion when viewed in plan on the substrate.
- the substrate and the front plate can be securely bonded by the bonding portion. Furthermore, it is possible to prevent unnecessary light from the surroundings of the self-luminous sensor device from entering the irradiation unit and the light receiving unit by the bonding unit. In addition, of the light emitted from the irradiation unit by the bonding unit, the light that goes directly from the irradiation unit to the light receiving unit (that is, the light that is emitted from the irradiation unit and goes directly to the light receiving unit without being irradiated on the subject) Can be blocked. Therefore, it is possible to prevent the light detected by the light receiving unit from fluctuating due to unnecessary light from the surroundings of the self-luminous sensor device or light directed directly from the irradiation unit to the light receiving unit. As a result, predetermined types of information such as blood flow velocity in the subject can be detected with high accuracy.
- the adhesive portion can also function as a spacer that defines the distance between the substrate and the front plate.
- the substrate and the front plate are bonded to each other by the bonding portion.
- the self-luminous sensor device of the present invention has a laminated structure in which a substrate on which an irradiating part and a light receiving part are formed and a front plate are laminated via an adhesive part. Therefore, when manufacturing the self-luminous sensor device of the present invention, for example, after forming the irradiation portion and the light receiving portion on the flat substrate surface of the substrate, the front plate may be bonded to the substrate by the bonding portion.
- the self-luminous sensor device of the present invention since the self-luminous sensor device of the present invention has a relatively simple structure called a laminated structure in which a substrate and a front plate are laminated via an adhesive portion, each process in the manufacturing process is simplified or It can be shortened. As a result, the yield can be improved, and the manufacturing cost can be reduced.
- the self-luminous sensor device of the present invention it is possible to detect a predetermined type of information such as blood flow velocity in a subject with high accuracy. Further, the yield can be improved and the manufacturing cost can be reduced, which is suitable for mass production.
- the adhesive portion is composed only of the light-shielding adhesive.
- the configuration of the bonding portion is relatively simple, for example, the process of forming the bonding portion can be simplified. Therefore, the yield can be further improved, and the manufacturing cost can be further reduced.
- the adhesive portion has a higher strength than the light-shielding adhesive, and each of the irradiation portion and the light receiving portion is viewed in plan on the substrate.
- An enclosing frame-like member is included.
- the strength of the bonded portion can be increased. Therefore, for example, the function as a spacer of an adhesion part can be improved. Therefore, it can suppress that the space
- the light shielding adhesive is an acrylic, epoxy, polyimide or silicon adhesive in which light shielding particles are dispersed.
- the adhesive part includes an acrylic, epoxy, polyimide, or silicon adhesive in which the light shielding particles are dispersed, as the light shielding adhesive. Therefore, the substrate and the front plate can be reliably bonded by the bonding portion. Furthermore, it is possible to reliably prevent unnecessary light from the surroundings of the self-luminous sensor device from entering the irradiation unit and the light receiving unit by the bonding unit. In addition, the light directly emitted from the irradiation unit to the light receiving unit among the light emitted from the irradiation unit can be reliably blocked by the bonding unit.
- the light-shielding particles include conductive particles such as carbon black, aluminum, and silver, and black pigment particles.
- the irradiation unit and the light receiving unit are integrated on the substrate.
- the irradiating part and the light receiving part are integrated, the arrangement area of each can be reduced and the size can be further reduced.
- the range of use of the self-luminous sensor device can be expanded, for example, the self-luminous sensor device can be a portable type instead of a stationary type.
- the apparatus further includes a calculating unit that calculates a blood flow velocity related to the subject based on the detected light.
- the blood flow velocity of each blood vessel having a different depth from the skin surface can be measured by utilizing the fact that the penetrating power of light into a living body depends on the wavelength. Specifically, by irradiating the surface of the living body with light, the light penetrating inside is reflected or scattered by red blood cells flowing in the blood vessels, and the wavelength is changed by receiving a Doppler shift according to the moving speed of the red blood cells. On the other hand, light scattered or reflected by skin tissue or the like that can be regarded as immobile with respect to red blood cells reaches the light receiving unit without changing the wavelength. When these lights interfere, an optical beat signal corresponding to the Doppler shift amount is detected in the light receiving unit. By performing arithmetic processing such as frequency analysis on the optical beat signal by the calculation unit, it is possible to obtain the blood flow velocity flowing in the blood vessel.
- the irradiating unit includes a semiconductor laser that generates laser light as the light.
- the laser beam can be irradiated by applying a voltage so that a current higher than the laser oscillation threshold flows to the semiconductor laser of the irradiation unit.
- Laser light has the property that, for example, the penetrating power into a living body differs depending on the wavelength. By utilizing this property, measurement at various depths of the subject becomes possible.
- a first method for manufacturing a self-luminous sensor device includes a substrate, an irradiation unit that is disposed on the substrate and irradiates a subject with light, and is disposed on the substrate.
- a light receiving unit that detects light from the subject caused by the irradiated light, and a front surface on which the subject is placed with respect to the substrate, so as to face the substrate.
- a face plate and an adhesive which is formed so as to surround each of the irradiation unit and the light receiving unit when viewed in plan on the substrate and includes a light-shielding adhesive, and bonds the substrate and the front plate to each other.
- a self-luminous sensor device comprising: a first light-emitting sensor device comprising: a step of forming the irradiation unit and the light-receiving unit on a first large substrate including a plurality of the substrates; 1 The irradiation unit on the large substrate and the The step of applying the light-shielding adhesive so as to surround each of the light portions, and the second large substrate including a plurality of the front plates are opposed to the first large substrate to which the light-shielding adhesive is applied. Arranging the first and second large substrates with the light-shielding adhesive, and cutting the first and second large substrates bonded to each other along the periphery of the substrate Including the step of.
- the above-described self-luminous sensor device of the present invention can be manufactured.
- the light-shielding adhesive is applied using, for example, a dispenser (liquid metering discharge device) or the like so as to surround each of the irradiation part and the light-receiving part on the first large substrate, only the light-shielding adhesive is used.
- the adhesion part which consists of can be formed easily.
- the first and second large substrates are bonded together, the first and second large substrates are cut along the periphery of the substrate, so that a plurality of self-luminous sensor devices can be manufactured simultaneously.
- a second self-luminous sensor device manufacturing method is arranged on a substrate, an irradiation unit arranged on the substrate and irradiating a subject with light, and arranged on the substrate.
- a light receiving unit that detects light from the subject caused by the irradiated light, and a front surface on which the subject is placed with respect to the substrate, so as to face the substrate.
- a face plate and an adhesive which is formed so as to surround each of the irradiation unit and the light receiving unit when viewed in plan on the substrate and includes a light-shielding adhesive, and bonds the substrate and the front plate to each other.
- a self-luminous sensor device comprising: a first light-emitting sensor device comprising: a step of forming the irradiation unit and the light-receiving unit on a first large substrate including a plurality of the substrates; 1 The irradiation unit on the large substrate and the A step of disposing an adhesive sheet made of the light-shielding adhesive on the first large substrate, and a second large substrate including a plurality of the front plates; Are disposed so as to face the first large substrate on which the adhesive sheet is disposed, and the first and second large substrates are bonded to each other by the adhesive sheet, and the first and first bonded to each other Cutting two large substrates along the periphery of the substrate.
- the above-described self-luminous sensor device of the present invention can be manufactured.
- the first and second large substrates are bonded to each other by an adhesive sheet that is formed so as to be able to surround each of the irradiation unit and the light receiving unit on the first large substrate. Therefore, it is possible to easily form an adhesive portion made only of a light-shielding adhesive.
- the first and second large substrates are cut along the periphery of the substrate, so that a plurality of self-luminous sensor devices can be manufactured simultaneously.
- a third method for manufacturing a self-luminous sensor device includes a substrate, an irradiation unit that is disposed on the substrate and irradiates a subject with light, and is disposed on the substrate.
- a light receiving unit that detects light from the subject caused by the irradiated light, and a front surface on which the subject is placed with respect to the substrate, so as to face the substrate.
- a face plate and an adhesive which is formed so as to surround each of the irradiation unit and the light receiving unit when viewed in plan on the substrate and includes a light-shielding adhesive, and bonds the substrate and the front plate to each other.
- a self-luminous sensor device comprising: a light-emitting sensor device, comprising: a step of forming the irradiation unit and the light-receiving unit on a first large substrate including a plurality of the substrates; With higher strength than adhesive The step of applying the light-shielding adhesive by dipping on a large frame-like member formed so as to be able to surround each of the irradiation part and the light receiving part when viewed in plan on the first large substrate And arranging a second large substrate including a plurality of the front plates so as to face the first large substrate through the large frame-like member coated with the light-shielding adhesive, Adhering the first and second large substrates to each other with an adhesive, and cutting the first and second large substrates bonded to each other along the periphery of the substrate.
- the above-described self-luminous sensor device of the present invention can be manufactured.
- the light-blocking adhesive is applied to the large frame-shaped member by dipping, an adhesive portion made of the frame-shaped member and the light-blocking adhesive can be easily formed.
- the first and second large substrates and the large frame-shaped member are cut along the periphery of the substrate, so that a plurality of self-luminous sensor devices are manufactured simultaneously. can do.
- a fourth method for manufacturing a self-luminous sensor device includes a substrate, an irradiation unit that is disposed on the substrate and irradiates a subject with light, and is disposed on the substrate.
- a light receiving unit that detects light from the subject caused by the irradiated light, and a front surface on which the subject is placed with respect to the substrate, so as to face the substrate.
- a face plate and an adhesive which is formed so as to surround each of the irradiation unit and the light receiving unit when viewed in plan on the substrate and includes a light-shielding adhesive, and bonds the substrate and the front plate to each other.
- a self-luminous sensor device comprising: a light-emitting sensor device, comprising: a step of forming the irradiation unit and the light-receiving unit on a first large substrate including a plurality of the substrates; With higher strength than adhesive In the large frame-shaped member formed so as to be able to surround each of the irradiation unit and the light receiving unit when viewed in plan on the first large substrate, the first large substrate is opposed to the first large substrate.
- a step of applying the light-shielding adhesive to one surface and a second surface opposite to the first surface; and a second large substrate including a plurality of the front plates, wherein the light-shielding adhesive is applied A step of arranging the large-sized frame member so as to face the first large-sized substrate, and bonding the first and second large-sized substrates to each other via the large-sized frame-shaped member with the light-shielding adhesive. And cutting the first and second large substrates bonded to each other along the periphery of the substrate.
- the above-described self-luminous sensor device of the present invention can be manufactured.
- a light-shielding adhesive is applied to the first surface (that is, the lower surface) that faces the first large substrate in the large frame-shaped member and the second surface (that is, the upper surface) opposite to the first surface. Is applied using, for example, a roller or the like, so that an adhesive portion having a configuration in which the upper surface and the lower surface of the frame-like member are covered with a light-shielding adhesive can be easily formed.
- the first and second large substrates and the large frame-shaped member are cut along the periphery of the substrate, so that a plurality of self-luminous sensor devices are manufactured simultaneously. can do.
- the substrate, the irradiation unit, the light receiving unit, the front plate, and the bonding unit are provided.
- a predetermined type of information such as speed can be detected with high accuracy. Further, the yield can be improved and the manufacturing cost can be reduced, which is suitable for mass production. Further, according to the first to fourth self-luminous sensor device manufacturing methods according to the present invention, the above-described self-luminous sensor device of the present invention can be manufactured.
- FIG. 2 is a cross-sectional view taken along the line A-A ′ of FIG. 1. It is a top view which shows the structure of the front plate of the blood flow sensor apparatus which concerns on 1st Embodiment. It is sectional drawing with the same meaning as FIG. 2 in a 1st modification. It is sectional drawing with the same meaning as FIG. 2 in a 2nd modification. It is a block diagram which shows the structure of the blood-flow sensor apparatus which concerns on 1st Embodiment. It is a conceptual diagram which shows an example of the usage method of the blood-flow sensor apparatus which concerns on 1st Embodiment.
- FIG. 9 is a sectional view taken along the line B-B ′ of FIG. 8. It is sectional drawing with the same meaning as FIG. 2 in 3rd Embodiment.
- It is a flowchart which shows the flow of the manufacturing method of the self-light-emitting sensor device which concerns on 1st Embodiment.
- It is a top view which shows the sensor part substrate wafer after a laser diode, a photodiode, etc. were formed.
- the sensor unit substrate wafer and the front plate array substrate are opposed to each other through a large frame-shaped member after light-shielding adhesive is applied by dipping. It is sectional drawing which shows the state arrange
- the sensor unit substrate wafer and the front plate array substrate are arranged to face each other with a large frame-shaped member coated with a light-shielding adhesive.
- FIG. 1 is a plan view showing a configuration of a sensor unit of the blood flow sensor device according to the first embodiment.
- FIG. 2 is a cross-sectional view taken along the line A-A ′ of FIG.
- the front plate 190 shown in FIG. 2 is omitted for convenience of explanation.
- the sensor unit 100 of the blood flow sensor device includes a sensor unit substrate 110, a laser diode 120, an electrode 130, a wire wiring 140, and a laser diode drive circuit 150.
- the sensor unit substrate 110 is made of a semiconductor substrate such as a silicon substrate. On the sensor unit substrate 110, a laser diode 120, a laser diode drive circuit 150, a photodiode 160, and a photodiode amplifier 170 are integrated and arranged.
- the laser diode 120 is an example of the “irradiation unit” according to the present invention, and is a semiconductor laser that emits laser light.
- the laser diode 120 is electrically connected to the electrode 130 through the wire wiring 140.
- the electrode 130 is electrically connected to an electrode pad (not shown) provided on the bottom of the sensor part substrate 110 by a wiring (not shown) penetrating the sensor part substrate 110.
- the other electrode (not shown) formed on the bottom surface of the laser diode 120 is connected to the sensor unit by a wiring (not shown) on the sensor unit substrate 110 or a wiring (not shown) penetrating the sensor unit substrate 110.
- the laser diode 120 is electrically connected to an electrode pad (not shown) provided on the bottom of the substrate 110 and allows the laser diode 120 to be driven by current injection from the outside of the sensor unit 100.
- the laser diode drive circuit 150 is a circuit that controls driving of the laser diode 120 and controls the amount of current injected into the laser diode 120.
- the photodiode 160 is an example of the “light receiving unit” according to the present invention, and functions as a photodetector that detects light reflected or scattered from the subject. Specifically, the photodiode 160 can obtain information on the intensity of light by converting the light into an electrical signal.
- the photodiode 160 is arranged side by side with the laser diode 120 on the sensor unit substrate 110. The light received by the photodiode 160 is converted into an electrical signal and input to the photodiode amplifier 170 via a wire wiring (not shown), an electrode (not shown) formed on the bottom surface of the photodiode 160, or the like.
- the photodiode 160 is an example of the “light receiving unit” according to the present invention, and functions as a photodetector that detects light reflected or scattered from the subject. Specifically, the photodiode 160 can obtain information on the intensity of light by converting the light into an electrical signal.
- the photodiode 160 is arranged side by side
- the photodiode amplifier 170 is an amplification circuit that amplifies the electric signal obtained by the photodiode 160.
- the photodiode amplifier 170 is electrically connected to an electrode pad (not shown) provided on the bottom of the sensor part substrate 110 by wiring (not shown) penetrating the sensor part substrate 110, and an amplified electric signal. Can be output to the outside.
- the photodiode amplifier 170 is electrically connected to an A / D (Analog-to-Digital) converter 310 (see FIG. 6 described later) provided outside the sensor unit 100.
- the adhesive part 180 is made of a light-shielding adhesive and adheres the sensor part substrate 110 and the front plate 190 to each other.
- the light-shielding adhesive may be, for example, an acrylic, epoxy, polyimide, or silicon adhesive in which conductive particles such as carbon black, aluminum, and silver are dispersed, or a black pigment.
- An acrylic-based, epoxy-based, polyimide-based, or silicon-based adhesive having a pigment dispersed therein may be used.
- the bonding portion 180 is formed so as to surround each of the laser diode 120 and the photodiode 160 when viewed in plan on the sensor portion substrate 110.
- the adhesive part 180 is formed in a wall shape on the sensor part substrate 110, and the first wall part 181 formed along the peripheral edge on the sensor part substrate 110, and the sensor part substrate 110. And a second wall portion 182 formed between the laser diode 120 and the photodiode 160 above.
- the first wall-shaped portion 181 surrounds the entirety of the laser diode 120, the electrode 130, the wire wiring 140, the laser diode drive circuit 150, the photodiode 160, and the photodiode amplifier 170 when viewed in plan on the sensor unit substrate 110. Is formed.
- the first wall-shaped portion 181 allows light from the periphery of the sensor unit 100 to enter the inside of the sensor unit 100 (that is, inside the first wall-shaped portion 181 on the sensor unit substrate 110). Can be prevented.
- the second wall portion 182 includes a portion formed along one side of the sensor portion substrate 110 in the first wall portion 181 between the laser diode 120 and the photodiode 160 on the sensor portion substrate 110, and the first wall. It is formed so that the part formed along the other side which opposes this one side among the shaped parts 181 may be connected.
- the second wall-shaped portion 182 can shield the laser diode 120 and the photodiode 160 from light.
- the light emitted from the laser diode 120 can be blocked as it is toward the photodiode 160 without being irradiated on the subject.
- light that does not need to be detected by the photodiode 160 is prevented from entering the photodiode 160 from the laser diode 120 side to the photodiode 160 side on the sensor unit substrate 110, and the detection accuracy is improved. be able to.
- the front plate 190 is disposed above the laser diode 120, the photodiode 160, and the like (that is, on the front side of the sensor unit substrate 110 where the laser diode 120 and the like are provided, with a predetermined interval from the sensor unit substrate 110). ing. In other words, the front plate 190 is disposed so as to face the sensor unit substrate 110 via the bonding unit 180.
- FIG. 3 is a plan view showing the configuration of the front plate of the blood flow sensor device according to the present embodiment.
- the front plate 190 includes a transparent substrate 190a and a light shielding film 195.
- the transparent substrate 190a is a transparent substrate that can transmit light from the laser diode 120 and light from the subject.
- a resin substrate, a glass substrate, or the like can be used as the transparent substrate 190a.
- the light shielding film 195 is provided on each of two substrate surfaces (that is, a substrate surface facing the sensor unit substrate 110 and a substrate surface opposite to the substrate surface) in the transparent substrate 190a.
- the light shielding film 195 defines an exit port 191 for emitting light from the laser diode 120 to the outside, and defines an entrance port 192 for entering light reflected or scattered from the subject.
- the light that enters the photodiode 160 is limited by the light shielding film 195, and only the light from directly above (that is, from the upward direction to the downward direction in FIG. 2) is incident on the photodiode 160. Therefore, light that does not need to be detected can be prevented from entering the photodiode 160, and detection accuracy can be improved.
- the diameter of the entrance 192 is, for example, about 40 um.
- FIG. 4 is a sectional view having the same concept as in FIG. 2 in the first modification.
- the incident port 192 may be formed as a pin hole (through hole) penetrating the transparent substrate 190a.
- a light shielding film 195 is also formed on the inner wall of the entrance 192 formed as a pinhole, so that a part of the light to be emitted from the exit 191 is inside the front plate 190 (that is, transparent).
- the path through which light can enter the photodiode 160 from the incident port 192 via the substrate 190a) can be eliminated, and the detection accuracy can be further improved.
- FIG. 5 is a sectional view having the same concept as in FIG. 2 in the second modification.
- the sensor unit 100 may include a front plate 190b made of a light shielding material instead of the front plate 190.
- each of the exit port 191 and the entrance port 192 is formed as a pin hole penetrating the front plate 190b. In this case, it is not necessary to form the light shielding film 195 described above.
- a protective plate made of a transparent substrate such as a resin substrate or a glass substrate may be provided on the upper surface side of the front plate 190.
- the durability of the sensor unit 100 can be enhanced by the protective plate.
- the same effect can be obtained by molding the entire front plate or the portion where the through hole is formed with a resin transparent to the light from the laser diode 120, or filling the through hole with the transparent resin. Can be obtained.
- the sensor unit substrate 110 is preferably a substrate made of a light shielding material, but is formed of a material that can transmit infrared light, such as Si (silicon), in order to integrally form an electronic circuit and a photodiode. May be.
- light shielding treatment may be performed separately with a light shielding resist or the like.
- the sensor unit substrate 110 on which the laser diode 120, the photodiode 160, and the like are formed, and the front plate 190 are bonded to each other by the bonding unit 180.
- the sensor unit 100 of the blood flow sensor device according to the present embodiment includes the sensor unit substrate 110 on which the laser diode 120, the photodiode 160, and the like are formed, and the front plate 190 stacked via the adhesive unit 180. It has a laminated structure.
- the sensor unit 100 of the blood flow sensor device has a relatively simple structure of a three-layer structure in which the sensor unit substrate 110, the bonding unit 180, and the front plate 190 are stacked in this order. Yes. Therefore, each process in the manufacturing process can be simplified or shortened. Therefore, the yield can be improved and the manufacturing cost can be reduced.
- FIG. 6 is a block diagram showing the configuration of the blood flow sensor device according to the present embodiment.
- the blood flow sensor device includes an A / D converter 310 and a blood flow velocity DSP (Digital Signal Processor) 320 in addition to the sensor unit 100 described above.
- the laser diode drive circuit 150 and the photodiode amplifier 170 are configured to be formed on the sensor unit substrate 110.
- the sensor unit substrate 110 may not be formed and may be provided separately from the sensor unit 100, or may be integrated on the sensor unit substrate 110 including the A / D converter 310 and the blood flow velocity DSP 320.
- other substrates having respective functions may be stacked together with the sensor unit substrate 110 and mounted by a method of electrically connecting each other by wire wiring or through wiring.
- the A / D converter 310 converts the electrical signal output from the photodiode amplifier 170 from an analog signal to a digital signal. That is, the electrical signal obtained by the photodiode 160 is amplified by the photodiode amplifier 170 and then converted into a digital signal by the A / D converter 310.
- the A / D converter 310 outputs a digital signal to the blood flow velocity DSP 320.
- the blood flow velocity DSP 320 is an example of the “calculation unit” according to the present invention, and calculates a blood flow velocity by performing predetermined arithmetic processing on the digital signal input from the A / D converter 310. .
- FIG. 7 is a conceptual diagram showing an example of a method of using the blood flow sensor device according to the present embodiment.
- the blood flow sensor device uses a laser diode 120 to apply laser light having a predetermined wavelength (for example, short wave light having a wavelength of 780 nm, or The blood flow velocity is measured by irradiating a long wave light having a wavelength of 830 nm.
- the laser light irradiation site is a site (for example, a hand, a foot, a face, an ear, etc.) in which capillary blood vessels are densely distributed at a position relatively close to the epidermis.
- an arrow P ⁇ b> 1 conceptually indicates light emitted from the sensor unit 100.
- the blood flow sensor device In measuring the blood flow velocity, the blood flow sensor device according to the present embodiment is typically used by bringing the fingertip 500 into contact with the upper surface of the sensor unit 100 (that is, the upper surface of the front plate 190). However, in FIG. 7, for convenience of explanation, a gap is provided between the fingertip 500 and the sensor unit 100. However, according to the blood flow sensor device according to the present embodiment, the blood flow velocity can be measured without bringing the fingertip 500 into contact with the upper surface of the sensor unit 100.
- the laser light applied to the fingertip 500 penetrates to a depth corresponding to the wavelength, and flows through blood vessels such as capillaries of the fingertip 500 or living tissues such as skin cells constituting the epidermis. Reflected or scattered.
- an arrow P ⁇ b> 2 conceptually indicates light that is reflected or scattered by the biological tissue of the fingertip 500 and enters the sensor unit 100. Then, Doppler shift occurs in the light reflected or scattered by the red blood cells flowing in the blood vessel, and the wavelength of the light changes depending on the moving speed of the red blood cells, that is, the blood flow speed (that is, the blood flow speed).
- the wavelength of light scattered or reflected by skin cells that can be regarded as immobile to red blood cells does not change.
- an optical beat signal corresponding to the Doppler shift amount is detected in the photodiode 160 (see FIG. 6).
- the optical beat signal detected by the photodiode 160 is frequency-analyzed to calculate the Doppler shift amount, and thereby the blood flow velocity can be calculated.
- the adhesive portion 180 made of a light-shielding adhesive is provided, for example, the photodiode 160 may not be detected. Light can be prevented from entering the photodiode 160. Therefore, the blood flow velocity in the subject can be detected with high accuracy.
- the sensor unit 100 has a relatively simple structure of a three-layer structure in which the sensor unit substrate 110, the bonding unit 180, and the front plate 190 are laminated in this order. Therefore, the yield can be improved and the manufacturing cost can be reduced, which is suitable for mass production.
- FIG. 8 is a plan view showing the configuration of the sensor unit of the blood flow sensor device according to the second embodiment.
- 9 is a cross-sectional view taken along the line B-B 'of FIG.
- the illustration of the front plate 190 shown in FIG. 9 is omitted, and the adhesive portion 200 is cut so as to include the frame-shaped member 210 on a plane along the substrate surface of the sensor portion substrate 110.
- the cross section in the case where it did is shown. 8 and 9, the same reference numerals are given to the same components as the components according to the first embodiment shown in FIGS. 1 to 7, and the description thereof will be omitted as appropriate.
- the blood flow sensor device according to the second embodiment differs from the blood flow sensor device according to the first embodiment described above in that the blood flow sensor device according to the second embodiment includes a sensor unit 102 instead of the sensor unit 100 according to the first embodiment described above. About the point, it is comprised substantially the same as the blood-flow sensor apparatus which concerns on 1st Embodiment mentioned above.
- the sensor unit 102 of the blood flow sensor device according to the second embodiment includes the bonding unit 200 in place of the bonding unit 180 in the first embodiment described above, and thus the first embodiment described above.
- the other parts are configured in substantially the same manner as the sensor unit 100 of the blood flow sensor device according to the first embodiment described above.
- the bonding portion 200 includes an adhesive portion 210 and a frame-shaped member 220.
- the bonding portion 200 is formed so as to surround each of the laser diode 120 and the photodiode 160 when viewed in plan on the sensor portion substrate 110.
- the adhesive portion 210 is made of a light-shielding adhesive and has an upper surface (that is, a surface facing the front plate 190 in the frame-shaped member 220) and a lower surface (that is, the sensor unit substrate 110 in the frame-shaped member 220). And a part of the side surface (more specifically, the side surface facing the laser diode 120 and the side surface facing the photodiode 160 in the frame-shaped member 220).
- the light-shielding adhesive may be, for example, an acrylic, epoxy, polyimide, or silicon adhesive in which conductive particles such as carbon black, aluminum, and silver are dispersed, or a black pigment.
- An acrylic-based, epoxy-based, polyimide-based, or silicon-based adhesive having a pigment dispersed therein may be used.
- the frame-shaped member 220 is made of, for example, resin having higher strength than the adhesive portion 210 and is formed so as to surround each of the laser diode 120 and the photodiode 160 when viewed in plan on the sensor unit substrate 110. .
- the frame-shaped member 220 may be formed of, for example, silicon, metal, ceramics, or the like having higher strength than the adhesive portion 210.
- the bonding portion 200 since the bonding portion 200 includes the adhesive portion 210 and the frame-shaped member 220, the bonding portion 200 does not include the frame-shaped member 220 (that is, includes only the adhesive). )
- the strength of the bonding portion 200 can be increased compared to the case. Therefore, it can suppress that the space
- a part of the adhesive portion 210 covers the side surface facing the laser diode 120 and the side surface facing the photodiode 160 in the frame-shaped member 220.
- 220 can be formed from a transparent material.
- the frame-like member 220 may be formed from a material having a light shielding property.
- FIG. 10 is a sectional view having the same concept as in FIG. 2 in the third embodiment.
- the same reference numerals are given to the same components as those according to the first embodiment shown in FIGS. 1 to 7, and description thereof will be omitted as appropriate.
- the blood flow sensor device according to the third embodiment differs from the blood flow sensor device according to the first embodiment described above in that the blood flow sensor device according to the third embodiment includes a sensor unit 103 instead of the sensor unit 100 in the first embodiment described above. About the point, it is comprised substantially the same as the blood-flow sensor apparatus which concerns on 1st Embodiment mentioned above.
- the sensor unit 103 of the blood flow sensor device according to the third embodiment is provided with an adhesive part 201 instead of the adhesive part 180 in the first embodiment described above, and the blood according to the first embodiment described above.
- the other parts are configured in substantially the same manner as the sensor unit 100 of the blood flow sensor device according to the first embodiment described above.
- the bonding portion 201 includes an adhesive portion 211 and a frame-shaped member 221.
- the frame-shaped member 221 is configured in substantially the same manner as the frame-shaped member 220 in the second embodiment described above with reference to FIGS. That is, the frame-shaped member 221 is made of, for example, a resin having a higher strength than the adhesive portion 211 and having a light shielding property, and each of the laser diode 120 and the photodiode 160 is viewed on the sensor unit substrate 110 in a plan view. It is formed so as to surround it.
- the frame-shaped member 221 may be formed from, for example, silicon, metal, ceramics, or the like.
- the adhesive portion 211 is made of a light-shielding adhesive, and has an upper surface (that is, a surface facing the front plate 190 in the frame-shaped member 221) and a lower surface (that is, the sensor unit substrate 110 in the frame-shaped member 221). And is not formed on the side surface of the frame-shaped member 221.
- the light-shielding adhesive may be, for example, an acrylic, epoxy, polyimide, or silicon adhesive in which conductive particles such as carbon black, aluminum, and silver are dispersed, or a black pigment.
- An acrylic-based, epoxy-based, polyimide-based, or silicon-based adhesive having a pigment dispersed therein may be used.
- the bonding portion 201 since the bonding portion 201 includes the adhesive portion 211 and the frame-shaped member 221, the bonding portion 201 does not have the frame-shaped member 221 (that is, a light-blocking adhesive).
- the strength of the bonding portion 201 can be increased as compared with the case where the bonding portion 201 is composed only of the above. Therefore, it can suppress that the space
- the adhesive portion 201 includes the light-shielding frame-shaped member 221 and the adhesive portion 211 made of the light-shielding adhesive. It is possible to prevent the light detected by the light from fluctuating due to unnecessary light from the periphery of the sensor unit 103 or light directed directly from the laser diode 120 to the photodiode 160.
- the self-luminous sensor device manufacturing method according to the first embodiment is an example of the first self-luminous sensor device manufacturing method according to the present invention, and the blood flow sensor device according to the first embodiment described above. Can be manufactured. Below, the manufacturing method which manufactures the sensor part 100 of the blood-flow sensor apparatus which concerns on 1st Embodiment mentioned above is demonstrated in detail.
- FIG. 11 is a flowchart showing the flow of the manufacturing method of the self-luminous sensor device according to the first embodiment.
- FIG. 12 is a plan view showing the sensor unit substrate wafer after the laser diode and the photodiode are formed.
- FIG. 13 is a conceptual diagram illustrating a process of applying an adhesive in the method for manufacturing the self-luminous sensor device according to the first embodiment.
- the sensor unit substrate wafer 510 is an example of the “first large substrate” according to the present invention, and is a semiconductor wafer including a plurality of sensor unit substrates 110 (see FIGS. 1 and 2). More specifically, the laser diode drive circuit 150, the photodiode 160, the photodiode amplifier 170, and the electrode 130 are formed on the sensor unit substrate wafer 510 by a semiconductor process technique, and then the laser diode 120 is mounted.
- a light-shielding adhesive is applied onto the sensor unit substrate wafer 510 using a dispenser (step S11). That is, as shown in FIGS. 12 and 13, a light-shielding adhesive 185 is applied to the adhesive region 180 a on the sensor unit substrate wafer 510 using the dispenser 910.
- the adhesive region 180 a is defined in a lattice shape surrounding each of the laser diode 120 and the photodiode 160 in the sensor unit substrate wafer 510.
- the light-shielding adhesive 185 for example, a thermosetting resin in which conductive particles such as carbon black, aluminum, and silver are dispersed is used.
- the light-shielding adhesive 185 may be a thermosetting resin in which a pigment such as a black pigment is dispersed. After the light shielding adhesive 185 is applied onto the sensor unit substrate wafer 510, the applied light shielding adhesive 185 is temporarily cured by heating for a predetermined time. As the light shielding adhesive, a light sensitive pressure sensitive adhesive may be used.
- the front plate array substrate (not shown) is an example of a “second large substrate” according to the present invention, and includes a substrate (for example, a plurality of front plates 190 including a plurality of front plates 190 (see FIGS. 2 and 3)). For example, a substrate arranged in a matrix.
- the step of forming such a front plate array substrate may be performed in advance, for example, in parallel with the step of forming a laser diode or the like on the sensor unit substrate wafer 510 (step S10).
- a light shielding film 195 (see FIGS. 2 and 3) is formed in a predetermined pattern on a transparent substrate wafer including a plurality of transparent substrates 190a (see FIGS. 2 and 3).
- the sensor unit substrate wafer 510 coated with the light-shielding adhesive 185 and the front plate array substrate are arranged so as to face each other, and alignment is performed.
- the light shielding adhesive 185 is pressurized by bringing the sensor unit substrate wafer 510 and the front plate array substrate closer to a predetermined distance.
- the light-shielding adhesive 185 is cured by heating, whereby the sensor unit substrate wafer 510 and the front plate array substrate are bonded to each other by the light-shielding adhesive 185.
- the sensor unit substrate wafer 510, the front plate array substrate, and the light-shielding adhesive 185 are cut along the cutting line L1 (step S13).
- the cutting line L1 is defined along the periphery of each of the plurality of sensor unit substrates 110 in the sensor unit substrate wafer 510.
- the sensor unit substrate wafer 510, the front plate array substrate, and the light-shielding adhesive 185 are cut along the cutting line L1 by, for example, dicing. Thereby, the several sensor part 100 can be manufactured simultaneously.
- the sensor unit 100 of the blood flow sensor device according to the first embodiment described above can be manufactured.
- the light-shielding adhesive 185 is applied using the dispenser 910 so as to surround each of the laser diode 120 and the photodiode 160 on the sensor unit substrate wafer 510, the light-shielding adhesive is performed.
- An adhesive portion 180 made of only the agent 185 can be easily formed.
- the sensor unit substrate wafer 510 and the front plate array substrate are bonded to each other by the light-shielding adhesive 185, so that a plurality of sensor units 100 can be manufactured simultaneously.
- a method for manufacturing the self-luminous sensor device according to the second embodiment will be described with reference to FIGS.
- the method for manufacturing the self-luminous sensor device according to the second embodiment is an example of the method for producing the second self-luminous sensor device according to the present invention, and the blood flow sensor device according to the first embodiment described above. Can be manufactured. Below, the manufacturing method which manufactures the sensor part 100 of the blood-flow sensor apparatus which concerns on 1st Embodiment mentioned above is demonstrated in detail.
- FIG. 14 is a flowchart showing a flow of a manufacturing method of the self-luminous sensor device according to the second embodiment.
- FIG. 15 is a conceptual diagram illustrating a process of installing an adhesive seal in the method for manufacturing the self-luminous sensor device according to the second embodiment. 14 and 15, the same reference numerals are used for the manufacturing steps and components similar to the manufacturing steps and components in the manufacturing method of the self-luminous sensor device according to the first embodiment shown in FIGS. 11 to 13. The description thereof will be omitted as appropriate.
- step S10 first, the laser diode 120, the photodiode 160, and the like are formed on the sensor unit substrate wafer 510 (step S10).
- an adhesive sheet 189 made of a light-shielding adhesive is placed on the sensor unit substrate wafer 510 (step S21). That is, as shown in FIG. 15, a lattice-like adhesive sheet 189 that can surround each of the laser diode 120 and the photodiode 160 is disposed so as to overlap the adhesive region 180a.
- the adhesive sheet 189 is a thermosetting or pressure sensitive adhesive sheet.
- the adhesive sheet 189 has a light shielding property, for example, a pigment such as a black pigment is dispersed therein.
- the sensor unit substrate wafer 510 and the front plate array substrate are bonded to each other (step S22). More specifically, the sensor unit substrate wafer 510 on which the adhesive sheet 189 is installed and the front plate array substrate are arranged so as to face each other, and alignment is performed. Subsequently, when the adhesive sheet 189 is a pressure-sensitive adhesive sheet, the sensor unit substrate wafer 510 and the front plate array substrate are brought close to a predetermined distance to pressurize the adhesive sheet 189, The front plate array substrate is bonded to each other by an adhesive sheet 189. Alternatively, when the adhesive sheet 189 is a thermosetting adhesive sheet, the sensor part substrate wafer 510 and the front plate array substrate are adhered to each other by the adhesive sheet 189 by curing the adhesive sheet 189 by heating. .
- the sensor unit substrate wafer 510, the front plate array substrate, and the adhesive sheet 189 are cut along the cutting line L1 (step S23). That is, the sensor unit substrate wafer 510, the front plate array substrate, and the adhesive sheet 189 are cut along the cutting line L1 by, for example, dicing. Thereby, the several sensor part 100 can be manufactured simultaneously.
- the sensor unit 100 of the blood flow sensor device according to the first embodiment described above can be manufactured.
- the sensor is formed by an adhesive sheet 189 formed so as to be able to surround each of the laser diode 120 and the photodiode 160 on the sensor unit substrate wafer 510 and made of a light-shielding adhesive. Since the partial substrate wafer 510 and the front plate array substrate are bonded to each other, it is possible to easily form the bonding portion 180 made of only the light-shielding adhesive.
- the sensor unit substrate wafer 510 and the front plate array substrate are bonded to each other by the adhesive sheet 189, the sensor unit substrate wafer 510 and the front plate array substrate are cut along the cutting line L1, so that the plurality of sensor units 100 can be simultaneously connected.
- the manufacturing method of the self-luminous sensor device according to the third embodiment is an example of the manufacturing method of the third self-luminous sensor device according to the present invention, and the blood flow sensor device according to the second embodiment described above. Can be manufactured. Below, the manufacturing method which manufactures the sensor part 102 of the blood-flow sensor apparatus which concerns on 2nd Embodiment mentioned above with reference to FIG.8 and FIG.9 is demonstrated in detail.
- FIG. 16 is a flowchart showing a flow of a manufacturing method of the self-luminous sensor device according to the third embodiment.
- FIG. 17 is a perspective view showing a large frame-shaped member in the method for manufacturing the self-luminous sensor device according to the third embodiment.
- FIG. 18 illustrates a method for manufacturing a self-luminous sensor device according to the third embodiment through a large frame-like member after a sensor unit substrate wafer and a front plate array substrate are coated with a light-shielding adhesive by dipping. It is sectional drawing which shows the state arrange
- step S10 the laser diode 120, the photodiode 160, and the like are formed on the sensor unit substrate wafer 510 (step S10).
- a large frame member is formed (step S31). That is, a large frame member 610 as shown in FIG. 16 is formed. More specifically, the large frame-like member 610 is formed in a lattice shape that can surround each of the laser diode 120 and the photodiode 160 in the sensor unit substrate wafer 510.
- the large frame-shaped member 610 includes a plurality of openings 611 corresponding to each of the plurality of laser diodes 120 formed on the sensor unit substrate wafer 510 and a plurality of units formed on the sensor unit substrate wafer 510.
- Each of the photodiodes 160 is formed in a plate shape having a plurality of openings 612 corresponding to each one.
- the large frame member 610 is formed by, for example, a resin molding technique or an etching technique.
- the step of forming the large frame member 610 (step S31) is performed in advance, for example, in parallel with the step of forming the laser diode 120 or the like (step S10) on the sensor unit substrate wafer 510. It is good to keep.
- step S32 the large frame member 610 is dipped in a light-shielding adhesive.
- the light-blocking adhesive is applied to the entire surface of the large-frame member 610 by immersing the large-frame member 610 in the light-blocking adhesive.
- the entire surface of the large frame-shaped member 610 is covered (that is, coated) with the light-shielding adhesive.
- the sensor unit substrate wafer 510 and the front plate array substrate are bonded to each other through the large frame member 610 coated with a light-shielding adhesive (step S33). More specifically, as shown in FIG. 18, the sensor unit substrate wafer 510 and the front plate array substrate 710 are opposed to each other via a large frame-shaped member 610 coated with a light-shielding adhesive 620. Place and align. Subsequently, the light-shielding adhesive 620 is cured by heating, so that the sensor unit substrate wafer 510 and the front plate array substrate 710 are bonded to each other by the light-shielding adhesive 620.
- the sensor unit substrate wafer 510, the front plate array substrate 710, the large frame member 610, and the light blocking adhesive 620 are cut along the cutting line L1 by, for example, dicing (step S34). Thereby, the several sensor part 102 can be manufactured simultaneously.
- the sensor unit 102 of the blood flow sensor device according to the second embodiment described above with reference to FIGS. can be manufactured.
- the adhesive portion 200 (see FIG. 9) including the adhesive portion 210 and the frame-shaped member 220 can be easily formed.
- the sensor unit substrate wafer 510 and the front plate array substrate 710 are bonded to each other with a light-shielding adhesive 620, the sensor unit substrate wafer 510, the front plate array substrate 710, and the large frame member 610 are cut along the cutting line L1.
- the manufacturing method of the self-luminous sensor device according to the fourth embodiment is an example of the manufacturing method of the fourth self-luminous sensor device according to the present invention, and the blood flow sensor device according to the third embodiment described above. Can be manufactured.
- the manufacturing method which manufactures the sensor part 103 of the blood-flow sensor apparatus which concerns on 3rd Embodiment mentioned above with reference to FIG. 10 is demonstrated in detail.
- FIG. 19 is a flowchart showing a flow of a manufacturing method of the self-luminous sensor device according to the fourth embodiment.
- FIG. 20 illustrates a method of manufacturing a self-luminous sensor device according to the fourth embodiment, in which the sensor unit substrate wafer and the front plate array substrate are opposed to each other with a large frame-shaped member coated with a light-shielding adhesive. It is sectional drawing which shows the state arrange
- a laser diode 120, a photodiode 160, and the like are formed on the sensor unit substrate wafer 510 (step S10).
- step S31 a large frame member is formed (step S31). That is, the large frame-shaped member 610 as shown in FIG. 16 is formed in the same manner as the manufacturing method of the self-luminous sensor device according to the third embodiment described above.
- a light-shielding adhesive is applied to the upper and lower surfaces of the large frame-shaped member 610 (step S42). That is, in FIGS. 16 and 20, the upper surface (that is, the surface that faces the front plate array substrate 710) and the lower surface (that is, the surface that faces the sensor unit substrate wafer 510) of the large frame member 610. Further, for example, a thermosetting light-shielding adhesive is applied using a roller or the like.
- the sensor unit substrate wafer 510 and the front plate array substrate 710 are bonded to each other through the large frame member 610 coated with the light-shielding adhesive 620 (step S43). More specifically, as shown in FIG. 20, the sensor unit substrate wafer 510 and the front plate array substrate 710 are connected to each other through a large frame-shaped member 610 having a light-shielding adhesive 620 applied to the upper and lower surfaces thereof. It arrange
- the sensor substrate wafer 510 and the large frame member 610 are bonded to each other by the portion of the light blocking adhesive 620 applied to the lower surface of the large frame member 610 and the light blocking adhesive 620.
- the front plate array substrate 710 and the large frame member 610 are bonded to each other by the portion applied to the upper surface of the large frame member 610).
- the sensor unit substrate wafer 510, the front plate array substrate 710, the large frame member 610, and the light blocking adhesive 620 are cut along the cutting line L1 by, for example, dicing (step S34). Thereby, the several sensor part 103 (refer also FIG. 10) can be manufactured simultaneously.
- the sensor unit 103 of the blood flow sensor device according to the third embodiment described above with reference to FIG. 10 is manufactured. Can do.
- the light-blocking adhesive 620 is applied to the upper surface and the lower surface of the large frame-shaped member 610 using, for example, a roller or the like, the adhesive portion composed of the adhesive portion 211 and the frame-shaped member 221. 201 (see FIG. 10) can be easily formed.
- the sensor unit substrate wafer 510 and the front plate array substrate 710 are bonded to each other with a light-shielding adhesive 620, the sensor unit substrate wafer 510, the front plate array substrate 710, and the large frame member 610 are cut along the cutting line L1. Since it cut
- the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification, and a self-luminous sensor with such a change.
- the apparatus and the manufacturing method thereof are also included in the technical scope of the present invention.
- the self-luminous sensor device and the manufacturing method thereof according to the present invention can be used for, for example, a blood flow sensor device capable of measuring a blood flow velocity and the like.
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Abstract
Description
110 センサ部基板
120 レーザダイオード
130 電極
150 レーザダイオードドライブ回路
160 フォトダイオード
170 フォトダイオードアンプ
180、200、201 接着部
189 接着シート
190 前面板
210 接着剤部分
220 枠状部材
310 A/D変換器
320 血流速度用DSP
510 センサ部基板ウエハ
610 大型枠状部材
710 前面板アレイ基板
910 ディスペンサ
<自発光型センサ装置の第1実施形態>
第1実施形態に係る血流センサ装置について、図1から図7を参照して説明する。
<自発光型センサ装置の第2実施形態>
第2実施形態に係る血流センサ装置について、図8及び図9を参照して説明する。
<自発光型センサ装置の第3実施形態>
第3実施形態に係る血流センサ装置について、図10を参照して説明する。
<自発光型センサ装置の製造方法の第1実施形態>
第1実施形態に係る自発光型センサ装置の製造方法について、図11から図13を参照して説明する。尚、第1実施形態に係る自発光型センサ装置の製造方法は、本発明に係る第1の自発光型センサ装置の製造方法の一例であり、上述した第1実施形態に係る血流センサ装置を製造することができる。以下では、上述した第1実施形態に係る血流センサ装置のセンサ部100を製造する製造方法について詳細に説明する。
<自発光型センサ装置の製造方法の第2実施形態>
第2実施形態に係る自発光型センサ装置の製造方法について、図14及び図15を参照して説明する。尚、第2実施形態に係る自発光型センサ装置の製造方法は、本発明に係る第2の自発光型センサ装置の製造方法の一例であり、上述した第1実施形態に係る血流センサ装置を製造することができる。以下では、上述した第1実施形態に係る血流センサ装置のセンサ部100を製造する製造方法について詳細に説明する。
<自発光型センサ装置の製造方法の第3実施形態>
第3実施形態に係る自発光型センサ装置の製造方法について、図16から図18を参照して説明する。尚、第3実施形態に係る自発光型センサ装置の製造方法は、本発明に係る第3の自発光型センサ装置の製造方法の一例であり、上述した第2実施形態に係る血流センサ装置を製造することができる。以下では、図8及び図9を参照して上述した第2実施形態に係る血流センサ装置のセンサ部102を製造する製造方法について詳細に説明する。
図16及び図17において、先ず、センサ部基板ウエハ510上にレーザダイオード120、フォトダイオード160等を形成する(ステップS10)。
<自発光型センサ装置の製造方法の第4実施形態>
第4実施形態に係る自発光型センサ装置の製造方法について、図19及び図20を参照して説明する。尚、第4実施形態に係る自発光型センサ装置の製造方法は、本発明に係る第4の自発光型センサ装置の製造方法の一例であり、上述した第3実施形態に係る血流センサ装置を製造することができる。以下では、図10を参照して上述した第3実施形態に係る血流センサ装置のセンサ部103を製造する製造方法について詳細に説明する。
Claims (11)
- 基板と、
該基板上に配置され、光を被検体に照射する照射部と、
前記基板上に配置され、前記照射された光に起因する前記被検体からの光を検出する受光部と、
前記基板の前記照射部が配置された前面側に、前記基板に対向するように配置された前面板と、
前記基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲むように形成されると共に遮光性の接着剤を含んでなり、前記基板及び前記前面板を互いに接着する接着部と
を備えることを特徴とする自発光型センサ装置。 - 前記接着部は、前記遮光性の接着剤のみからなることを特徴とする請求の範囲第1項に記載の自発光型センサ装置。
- 前記接着部は、前記遮光性の接着剤より高い強度を有すると共に前記基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲む枠状部材を含んでいることを特徴とする請求の範囲第1項に記載の自発光型センサ装置。
- 前記遮光性の接着剤は、遮光性粒子が内部に分散された、アクリル系、エポキシ系、ポリイミド系又はシリコン系の接着剤であることを特徴とする請求の範囲第1項に記載の自発光型センサ装置。
- 前記照射部及び前記受光部は、前記基板上に集積されていることを特徴とする請求の範囲第1項に記載の自発光型センサ装置。
- 前記検出された光に基づいて、前記被検体に係る血流速度を算出する算出部を更に備えることを特徴とする請求の範囲第1項に記載の自発光型センサ装置。
- 前記照射部は、前記光としてレーザ光を発生させる半導体レーザを有することを特徴とする請求の範囲第1項に記載の自発光型センサ装置。
- 基板と、該基板上に配置され、光を被検体に照射する照射部と、前記基板上に配置され、前記照射された光に起因する前記被検体からの光を検出する受光部と、前記基板の前記照射部が配置された前面側に、前記基板に対向するように配置された前面板と、前記基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲むように形成されると共に遮光性の接着剤を含んでなり、前記基板及び前記前面板を互いに接着する接着部とを備える自発光型センサ装置を製造する自発光型センサ装置の製造方法であって、
前記基板を複数含む第1大型基板上に前記照射部及び前記受光部を形成する工程と、
前記第1大型基板上における前記照射部及び前記受光部の各々を取り囲むように、前記遮光性の接着剤を塗布する工程と、
前記前面板を複数含む第2大型基板を、前記遮光性の接着剤が塗布された前記第1大型基板と対向するように配置し、前記遮光性の接着剤によって前記第1及び第2大型基板を互いに接着する工程と、
前記互いに接着された第1及び第2大型基板を、前記基板の周縁に沿って切断する工程と
を含むことを特徴とする自発光型センサ装置の製造方法。 - 基板と、該基板上に配置され、光を被検体に照射する照射部と、前記基板上に配置され、前記照射された光に起因する前記被検体からの光を検出する受光部と、前記基板の前記照射部が配置された前面側に、前記基板に対向するように配置された前面板と、前記基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲むように形成されると共に遮光性の接着剤を含んでなり、前記基板及び前記前面板を互いに接着する接着部とを備える自発光型センサ装置を製造する自発光型センサ装置の製造方法であって、
前記基板を複数含む第1大型基板上に前記照射部及び前記受光部を形成する工程と、
前記第1大型基板上における前記照射部及び前記受光部の各々を取り囲むことが可能なように形成されると共に前記遮光性の接着剤からなる接着シートを、前記第1大型基板上に配置する工程と、
前記前面板を複数含む第2大型基板を、前記接着シートが配置された前記第1大型基板と対向するように配置し、前記接着シートによって前記第1及び第2大型基板を互いに接着する工程と、
前記互いに接着された第1及び第2大型基板を、前記基板の周縁に沿って切断する工程と
を含むことを特徴とする自発光型センサ装置の製造方法。 - 基板と、該基板上に配置され、光を被検体に照射する照射部と、前記基板上に配置され、前記照射された光に起因する前記被検体からの光を検出する受光部と、前記基板の前記照射部が配置された前面側に、前記基板に対向するように配置された前面板と、前記基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲むように形成されると共に遮光性の接着剤を含んでなり、前記基板及び前記前面板を互いに接着する接着部とを備える自発光型センサ装置を製造する自発光型センサ装置の製造方法であって、
前記基板を複数含む第1大型基板上に前記照射部及び前記受光部を形成する工程と、
前記遮光性の接着剤より高い強度を有すると共に前記第1大型基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲むことが可能なように形成された大型枠状部材に、前記遮光性の接着剤をディッピングにより塗布する工程と、
前記前面板を複数含む第2大型基板を、前記遮光性の接着剤が塗布された前記大型枠状部材を介して、前記第1大型基板と対向するように配置し、前記遮光性の接着剤によって前記第1及び第2大型基板を互いに接着する工程と、
前記互いに接着された第1及び第2大型基板を、前記基板の周縁に沿って切断する工程と
を含むことを特徴とする自発光型センサ装置の製造方法。 - 基板と、該基板上に配置され、光を被検体に照射する照射部と、前記基板上に配置され、前記照射された光に起因する前記被検体からの光を検出する受光部と、前記基板の前記照射部が配置された前面側に、前記基板に対向するように配置された前面板と、前記基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲むように形成されると共に遮光性の接着剤を含んでなり、前記基板及び前記前面板を互いに接着する接着部とを備える自発光型センサ装置を製造する自発光型センサ装置の製造方法であって、
前記基板を複数含む第1大型基板上に前記照射部及び前記受光部を形成する工程と、
前記遮光性の接着剤より高い強度を有すると共に前記第1大型基板上で平面的に見て前記照射部及び前記受光部の各々を取り囲むことが可能なように形成された大型枠状部材における、前記第1大型基板に対向することとなる第1面及び該第1面と反対側の第2面に前記遮光性の接着剤を塗布する工程と、
前記前面板を複数含む第2大型基板を、前記遮光性の接着剤が塗布された前記大型枠状部材を介して、前記第1大型基板と対向するように配置し、前記遮光性の接着剤によって前記第1及び第2大型基板を、前記大型枠状部材を介して互いに接着する工程と、
前記互いに接着された第1及び第2大型基板を、前記基板の周縁に沿って切断する工程と
を含むことを特徴とする自発光型センサ装置の製造方法。
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