CN104545842B - Thin physiological characteristic detection module - Google Patents
Thin physiological characteristic detection module Download PDFInfo
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- CN104545842B CN104545842B CN201410022777.8A CN201410022777A CN104545842B CN 104545842 B CN104545842 B CN 104545842B CN 201410022777 A CN201410022777 A CN 201410022777A CN 104545842 B CN104545842 B CN 104545842B
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- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 230000003287 optical effect Effects 0.000 claims abstract description 116
- 239000004065 semiconductor Substances 0.000 claims abstract description 87
- 239000000758 substrate Substances 0.000 claims description 39
- 230000003678 scratch resistant effect Effects 0.000 claims description 38
- 239000008280 blood Substances 0.000 claims description 9
- 210000004369 blood Anatomy 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 230000036772 blood pressure Effects 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
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- 210000003462 vein Anatomy 0.000 claims description 3
- 230000035485 pulse pressure Effects 0.000 claims 2
- 239000010410 layer Substances 0.000 description 50
- 210000003811 finger Anatomy 0.000 description 29
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- 230000035479 physiological effects, processes and functions Effects 0.000 description 3
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- 208000032366 Oversensing Diseases 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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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
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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
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
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- Health & Medical Sciences (AREA)
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- Medical Informatics (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Molecular Biology (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Physiology (AREA)
- Cardiology (AREA)
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- Optics & Photonics (AREA)
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a thin physiological characteristic detection module, which can detect physiological characteristics by detecting scattered light scattered by body tissues after absorbing light without adding any optical mechanism on a semiconductor optical sensing pixel.
Description
Technical field
The present invention is on a kind of slim physiological characteristic detection module.Furthermore, the present invention need not be half on one kind
Any optical facilities of additional in conductor optical sensing pixel, just can be by scattering out after detecting that bodily tissue absorbs light
Scattered light carry out the module of physiological characteristic detection.
Background technology
In known technology, for detecting that the optical module of physiological characteristic is believed commonly used to detection finger to obtain physiological characteristic
Breath.Distinguished according to user's use state, there are two kinds of forms, one of which is finger fixation in the fixation type sense on detection module
Survey, another is the mobile model sensing that finger slips over detection module.In order to obtain good optical imagery, it is however generally that all need
Configure optical facilities to assist imaging, the PU900-10 type fingerprint detectors that such as NEC is released just occupy significant volume.
With life evolution, portable appliance and electronic becomes popularization, such as notebook computer, mobile phone, tablet PC.
Because such product emphasizes frivolous volume and weight mostly, therefore the excessive physiological characteristic detection module of volume is just not suitable for answering
With on portable electronic product, therefore the physiological characteristic detection module being widely used at present on portable appliance and electronic is almost
All it is applying electronic formula detection technique.By taking capacitance type fingerprint detection module as an example, it has detection surface, is positioned over by finger
During the detection surface, the Wave crest and wave trough of fingerprint produces the discrepant electric field signal of tool, the multiple electricity apart from difference
Field signal just can be treated as representing the image of fingerprint carrying out subsequently comparing operation.
The content of the invention
An object of the present invention is to provide a kind of slim physiological characteristic detection module, and it has semiconductor optical sensing area
Block, substrate, at least one light source, wherein the light source is connected with semiconductor optical sensing block with the electrical property of substrate,
To be controlled by control module, the control module can be integrated with semiconductor optical sensing block, or independent circuit,
And it is electrical connected to the substrate.It is a feature of the present invention that block is sensed with very thin semiconductor optical, while
Without extra optical facilities on the sensing block, just it can be positioned over by finger or body part in the module, and
Obtain enough physiological characteristic informations.
To reach object defined above, the light that the light source is launched can enter human body, and through human body light can again with
The mode of scattering leaves human body surface, and the semiconductor optical sensing block has very thin surface texture so that light from
When opening body surface, sensing block can be arrived at via very short light path, while light is offset without extra optical facilities, and
So that sensing block, which results in enough characteristic informations, carries out subsequent treatment.The optical sensing block has slim and scratch resistance
Superficial layer.
An object of the present invention is to provide a kind of slim physiological characteristic detection module, and it has semiconductor optical sensing area
Block, substrate, at least one light source, wherein the light source is connected with semiconductor optical sensing block with the electrical property of substrate,
To be controlled by control module, the control module can be integrated with semiconductor optical sensing block, or independent circuit,
And it is electrical connected to the substrate.It is a feature of the present invention that block is sensed with very thin semiconductor optical, while
Without extra optical facilities on the sensing block, just it can be positioned over by finger or body part in the module, and
Obtain enough physiological characteristic informations.And the optical sensing block is according to finger moving direction, at least provided with relative to institute
Sensor pixel of the moving direction position in two kinds of diverse locations is stated, with when needed respectively in the optics of different time sensing fingers
Image, required physiological characteristic is calculated by the time difference between image.
An object of the present invention is to provide a kind of slim physiological characteristic detection module, and it has semiconductor optical sensing area
Block, substrate, at least one light source, wherein the light source is connected with semiconductor optical sensing block with the electrical property of substrate,
To be controlled by control module, the control module can be integrated with semiconductor optical sensing block, or independent circuit,
And it is electrical connected to the substrate.It is a feature of the present invention that block is sensed with very thin semiconductor optical, while
Without extra optical facilities on the sensing block, just it can be positioned over by finger or body part in the module, and
Obtain enough physiological characteristic informations.And the optical sensing block is at least provided with two kinds of different sensor pixels, to need
Will when distinguish the different optical images of finger sensing, and therefore calculate required physiological characteristic.
An object of the present invention is to provide a kind of slim physiological characteristic detection module, and it has semiconductor optical sensing area
Block, substrate, multiple light sources, wherein the multiple light source has different wave length, the multiple light source and the semiconductor optical sense
Survey block with the electrical property of substrate to be connected, to be controlled by control module, the control module can be sensed with the semiconductor optical
Block is integrated, or independent circuit, and is electrical connected to the substrate, and the semiconductor optical sensing block can be corresponded to
The multiple light source luminescent carrys out light sensing.It is a feature of the present invention that sensing block with very thin semiconductor optical, together
When on the sensing block without extra optical facilities, just the module can be positioned over by finger or body part
On, and obtain enough physiological characteristic informations.
To reach object defined above, the light that the light source is launched can enter human body, and through human body light can again with
The mode of scattering leaves human body surface, and the semiconductor optical sensing block has very thin surface texture so that light from
When opening body surface, sensing block can be arrived at via very short light path, while light is offset without extra optical facilities, and
So that sensing block, which results in enough characteristic informations, carries out subsequent treatment.The optical sensing block has slim and scratch resistance
Superficial layer.
The present invention provides a kind of slim physiological characteristic detection module, for detecting that at least one physiology of body part is special
Levy.The slim physiological characteristic detection module is included：Substrate, chip, at least one light source and scratch-resistant layer.The substrate has
Substrate surface.The chip is arranged on the substrate surface and senses block comprising semiconductor optical.At least one described light
Source is arranged on the substrate surface.Scratch-resistant layer formation is on the chip surface of the chip and the chip surface is to institute
State scratch-resistant layer upper surface distance be less than 100 microns, wherein, when detect the physiological characteristic when, the scratch-resistant layer it is described
Upper surface is used to directly contact for the body part, so as to the light direct illumination human body surface that the light source is sent and pass through
The body part and via after the scratch-resistant layer by the semiconductor optical sensing block sensing.
The present invention provides a kind of slim physiological characteristic detection module, for detecting that at least one physiology of body part is special
Levy.The slim physiological characteristic detection module is included：It is multiple linear semiconductor optical sensing blocks, at least one light source, anti-scratch
Layer and control module.The scratch-resistant layer is covered on the multiple linear semiconductor optical sensing block, and described anti-scratch
The thickness of layer is less than 100 microns.The multiple linear semiconductor optical sensing block of control module electric property coupling and described
Light source, the human body surface for obtaining the body part in different time according to different linear semiconductor optical sensing blocks
Optical image to detect the physiological characteristic, wherein, when detect the physiological characteristic when, the upper surface of the scratch-resistant layer is used for
Directly contacted for the human body surface, so that human body surface described in the light direct illumination that the light source is sent and through the body
Body region and via after the scratch-resistant layer by the multiple linear semiconductor optical sensing block sense.
The present invention provides a kind of slim physiological characteristic detection module, for detecting that at least one physiology of body part is special
Levy.The slim physiological characteristic detection module is included：Semiconductor optical sensing block, at least one light source, scratch-resistant layer and control
Molding block.The semiconductor optical sensing block obtains the human body surface of the body part with speed more than 300 frame per second
Multiple optical images.The scratch-resistant layer is covered on the semiconductor optical sensing block, and the thickness of the scratch-resistant layer is small
In 100 microns.Semiconductor optical sensing block and the light source described in the control module electric property coupling, for according to described half
Conductor optical sensing block produces the surface shadow of the related human body surface in the multiple optical image that different time is obtained
Picture, and the physiological characteristic is detected according to the surface image, wherein, when detecting the physiological characteristic, the scratch-resistant layer
Upper surface is used to directly contact for the human body surface, so that human body surface described in the light direct illumination that the light source is sent is simultaneously
Through the body part via after the scratch-resistant layer by the semiconductor optical sensing block sensing.
In the slim physiological characteristic detection module of the present invention, the control module can be according to the semiconductor optical sensing area
Human body surface acquired in optical image or same time of the block in the same area of the human body surface acquired in different time
The optical image detection physiological characteristic of different zones；Wherein, the control module can be incorporated into the chip or be arranged on institute
State on substrate.
Brief description of the drawings
Fig. 1 describes embodiments of the invention；
Fig. 2 a, 2b describe the upper schematic diagram of the semiconductor optical sensing block of the present invention；
Fig. 3 a, 3b describe the upper schematic diagram of the slim physiological characteristic detection module of the present invention；
Fig. 4 a, 4b describe the diagrammatic cross-section of the semiconductor optical sensing block of the present invention.
Description of reference numerals
The substrate of 101 light source 102
The sensor pixel of 102S substrate surfaces 103
The contact of 104 thin semiconductor structure 105
The chip structure of 13 finger 201
The flatness layer of 201S chip surfaces 203
205 scratch-resistant layers
Embodiment
Following description includes several embodiments of the present invention, the schematic diagram operated comprising user, to understand this
How invention is applied to practical operation situation.It is noted that in figures below, the part unrelated with the technology of the present invention by
Omit, while to show the ratio between the ratio in the relation between component, schema between each component and real component simultaneously
It is not necessarily identical.
Fig. 1 describes one embodiment of the present of invention, includes at least one light source 101, substrate 102, multiple sensor pixels 103
And multiple contacts 105；Wherein, the multiple sensor pixel 103 constitutes semiconductor optical sensing block, and it, which has, slim partly leads
Body structure 104（Further in Fig. 4 a and 4b explanations）.The multiple contact 105 is used to make semiconductor optical sensing block electrically connect
Knot is to the substrate 102, to be controlled by control module（It is not shown）；Wherein, the multiple sensor pixel 103 can be located at chip
In 201 the multiple contacts 105 can as 201 pairs of outsides of chip electrical contact.The light source 101 is also electrically connected with
To the substrate 102, and the control module is for controlling the light source 101 to light, the light of transmitting is entered access customer
Bodily tissue (can be appropriate body part), for example represented in the present embodiment with finger 13.While the control module
Also the multiple sensor pixel 103 is controlled to sense the light transmitted from finger 13.Due to the blood vessel in finger, blood,
Fingerprint of finger surface etc. has different optical properties, therefore by arranging specific light source 101, just can be by the multiple
The optical image that sensor pixel 103 is sensed carries out physiological characteristic judgement.
In more detail, can be incorporated into the chip 201 or be arranged on the substrate 102 (can be with for the control module
The chip 201 is located at the identical or different surface of the substrate 102), for controlling the light source 101 and the semiconductor light
Learn sensing block.The substrate 102 has substrate surface 102S, and the chip 201 and the light source 101 are described for being arranged at
On substrate surface 102S.In the present embodiment, in order to effectively reduce overall volume, the chip 201 is relative with the light source 101
Preferably less than 8 millimeters of distance.
In the present embodiment, contact 105 can be conducting wire frame structure, in other embodiments, contact 105 or projection,
The forms such as spherical array, wire, are not intended to limit the present invention.
For example, when wanting the fingerprint of sensing finger 13, it is infrared ray black light that can arrange light source 101, so as to
User will not feel dazzling.If desired allow user to have by the impression detected, can also be changed to using other colors
Visible ray.Light enters after finger, and scattering and diffusion, when coming fingerprint inner surface, can be penetrated into finger in internally organizing
Line outer surface, because fingerprint has the features such as bumps, therefore works as light from interior recess（It is not in contact with sensing sectors）Scatter
When going, light can dissipate, and the sensor pixel 103 immediately below it will sense less light, and form dark line；Relatively
For, when light is from outer convex（There are contact sensing sectors）When scattering out, the sensor pixel 103 immediately below it will be felt
More light is measured, and forms bright rays.The change of the dark line of these bright rays just can represent the feature of fingerprint.
When the sensing block area, which is arrived greatly, to obtain enough fingerprint characteristics, user is just only needed substantially by finger print
After the face center alignment sensing block, by it is upper just can, and need not slide finger enables sensing block continuously to obtain fingerprint
Coherent video.Sufficiently large sensing block area can exceed 25mm2。
In the present embodiment, semiconductor sensing block can be with speed more than hundreds of frames (hundreds of frames) per second
Degree continuously acquires image, such as described control module controls the semiconductor optical to sense block with speed more than 300 frame per second
Degree obtains optical image and controls the light source 101 to coordinate image capturing to light, therefore, it is possible to obtain enough and continuous fingerprint
Image, and piece together out and be enough to obtain the larger fingermark image for representing fingerprint characteristic.In other words, the control module can be according to institute
State optical image of the semiconductor optical sensing block in the identical or different human body surface region in the part acquired in different time
Detect physiological characteristic.
Fig. 2 a, 2b describe the upper schematic diagram of the semiconductor optical sensing block of the present invention.Representated by wherein Fig. 2 a is
Close to the sensing block 21a of line style, understand that multiple sensor pixels 103 are arranged in elongated shape in figure, its transverse width is approached
The width of thumb, for example, 1cm are wide, for obtaining enough information when user slides and obtains fingerprint；Its other longitudinal direction
Width can be very narrow, and for example only 0.3~2mm is wide, because sensing block can obtain image with high-speed and continuous, therefore works as user
Finger slip over sensing block when, remain able to get continuous and sufficient image.For example, when the finger of user
Head is slipped over second speed 10cm speed senses surface, and senses surface when can be with the frequency acquisition image of 500 frame image per second, often
Interval between one image is 0.2mm, still in longitudinally wide scope, therefore sensing block being capable of the company of getting
Continuous image.Because the present invention can be with the frequency acquisition image more than 1000 frame image per second, therefore, it is possible to ensure narrow
Longitudinally wide state under, remain able to obtain continuous and enough image.These image energies it is enough come piece together out fingerprint or
Veinprint in user's body, is used as the purposes of identification user.In other words, the control module can partly be led according to described
Bulk optics sensing block (such as now be linear semiconductor optical sensing block) the part acquired in different time it is identical or
The optical image detection physiological characteristic in different human body surface regions.For example in one embodiment, the control module can use
In the surface shadow that the related body part of optical image generation that block is obtained in different time is sensed according to semiconductor optical
Picture, and physiological characteristic is detected according to the surface image, for example gather out fingerprint or veinprint.
Other physiological characteristics are being detected, when being applied such as blood oxygen concentration, heartbeat (pulse), blood pressure, due to user not
Finger can rapidly be slided or measure surface, therefore the width of sensing block can't highly impact sensing result.
In another embodiment, multiple linear semiconductor optical sensing blocks can be along preset direction (such as longitudinally wide direction) parallel
Row, the human body surface of the body part is then slided along the preset direction, and the control module can be according to the semiconductor
Optical sensing block (being for example now linear semiconductor optical sensing block) is in identical people's body surface acquired in different time
The optical image detection physiological characteristic in face region.
That representated by Fig. 2 b is the sensing block 21b close to block type, is that area is presented in pixel arrangement with Fig. 2 a difference
Block type, its transverse width and longitudinally wide ratio can be between 0.5~2.Consequently, it is possible to which user will either detect quiet
Vein road, fingerprint or when being the physiological characteristics such as blood oxygen concentration, heartbeat, blood pressure, are only needed finger or body surface laminating
In sensing block, without completing sensing by way of sliding or be mobile, therefore for the sensing block of line style,
Be conducive to while detecting a variety of physiological characteristics.This sensing block 21b sensing area should be at least above 25mm2。
Fig. 3 a, 3b describe the upper schematic diagram of the slim physiological characteristic detection module of the present invention.It is mainly used to illustrate light source
How can configure, and how to apply multiple light sources.In fig. 3 a, describe and light source 101 is placed on multiple sensor pixels 103
Side, and be electrically connected with substrate 102.In the present embodiment it is worth noting that, by taking the finger of user as an example, although light
Source 101 is placed on the side of sensor pixel 103, but due to the bodily tissue of light penetration to user among, therefore light source places
Position have no effect on finger placement direction, it is only necessary to during sensing, finger is persistently irradiated by light source.
In fig 3b, two kinds of different light source 101a and 101b are described.In the present embodiment, mean can for different light sources
Send the light source of different wave length light.Due to light of the composition in tissue for different wave length, with different reactions,
For example with different absorptivities, therefore by the sensing to different light sources, it just can derive and learn the life related to optical wavelength
Feature is managed, can also be by the sensing image to different light sources, to do mutual correction, to obtain more accurately sensing result.Example
As the oxygen composition in blood is for the absorptivity of different color light and differs, therefore by sensing the energy of different color light, just
It can derive and learn blood oxygen concentration.In another example user senses identical when sliding finger in the sensor pixel of diverse location
The time point of image is different, that is, with the time difference, therefore the benchmark mutually corrected can be used as.In other words, the present embodiment
Slim physiological characteristic detection module can send the light of different wave length, the semiconductor optical sensing area respectively comprising two kinds of light sources
Block is respectively used to sense the light of different wave length comprising two kinds of sensor pixels.
For example, if to carry out blood oxygen concentration detection, then it can use to HbO2 and Hb isobestic point wavelength
The light of 805nm both front and back wavelength, for example, can select respectively wavelength 660nm or so, and wavelength 940nm or so light
Line.Either 730~810nm can be selected, or 735~895nm light.Pass through suction of the blood for two kinds of wavelength light
The difference of receipts degree, can derive blood oxygen concentration.Related e measurement technology is to note known to this art person, herein not
Repeat again.
By the understanding to Fig. 3 a, 3b, it can learn that the present invention can apply multiple light sources, it is not limited to single light source
Or two light sources, and different sensor pixels can be arranged in response to the physiological characteristic to be determined, it is more multiple to correspond to
Light source, and the position of light source might not.In the case of slim framework, present invention can apply to many physiological characteristic senses
Survey.For fingerprint detection, it is only necessary to arrange two light sources in side, the dark line change of enough bright rays just can be obtained；Therefore it is different
Light source just can place to detect other physiological characteristics in the lump.If, can be same in order to obtain more uniform image
The both sides for sensing block arrange same light source so that light can enter the bodily tissue of access customer simultaneously from the both sides of sensing block.
Fig. 4 a, 4b describe the diagrammatic cross-section of the semiconductor optical sensing block of the present invention, its thin semiconductor structure 104
Partial schematic diagram.Fig. 4 a describe flatness layer 203 has the embodiment of anti-scratch ability simultaneously, such as with pi
(Polyimide) as the material of flatness layer 203, just it can be applied with enough anti-scratch abilities among the present invention；Also
It is to say, now the flatness layer 203 is used as scratch-resistant layer.Flatness layer 203 forms the top in chip structure 201 and position exists
On chip surface 201S, and it is covered on semiconductor optical sensing block to protect semiconductor structure 104.Due to chip structure
201 when being formed in its top probably due to the reason of semiconductor layout, after metal level and electrode is formed, can have
At many bumps（As shown in the figure）, it is unfavorable for optical sensing, while also less weather-proof ability, therefore form flat in the top
Layer 203, makes thin semiconductor structure 104 have flat surface, is more beneficial for being applied among the present invention.In the present invention,
Thin semiconductor structure 104 will be continually among air, and contacted with the body of user, it is therefore desirable to possess
Preferably anti-scratch ability；In semiconductor fabrication now, anti-scratch material can be screened on the basis of pi.Together
When flatness layer 203 need to have the property that visible ray or black light may pass through, the light source that can arrange in pairs or groups is selected.In addition, anti-scratch
Material may also be glass or similar material, and scratch-resistant layer can be glassy layer.
It is worth noting that, for the diffusion effect that may be produced when lowering light through flatness layer 203, and make image
Produce and obscure, preferably the surface of semiconductor structure 104 is exactly in the present embodiment to the distance on the surface of chip structure 201
The height of flatness layer 203 is, it is necessary to be limited in 100 microns (μm) below.That is, chip surface 201S to the flatness layer 203 is (i.e.
Scratch-resistant layer) the distance of upper surface be preferably less than 100 microns.When detecting physiological characteristic, the upper surface of the flatness layer 203 is used
In directly contacting for body part, so that the light direct illumination human body surface that the light source 101 is sent and through the body
Position and via after the flatness layer 203 by semiconductor optical sensing block sensing.In one embodiment, the light source 101
Light-emitting area and substrate surface 102S distance can be same as the upper surface of the flatness layer 203 and the substrate surface
102S distance.That is, when the light-emitting area of the light source 101 and the upper surface of the flatness layer 203 have identical height
When, the light that the light source 101 is sent efficiently can enter the body part with by semiconductor through human body surface
Optical sensing block is sensed.
Fig. 4 b and Fig. 4 a difference is in Fig. 4 b flatness layer 203 does not have enough anti-scratch abilities simultaneously, therefore is putting down
The top of smooth layer 203 is additionally formed one layer of scratch-resistant layer 205.Similarly, flatness layer 203 and scratch-resistant layer are passed through in order to lower light
The diffusion effect that may be produced when 205, in the present embodiment the total height of flatness layer 203 and scratch-resistant layer 205 need to be limited in
Less than 100 microns.In the present embodiment, flatness layer 203 need not consider anti-scratch ability, and scratch-resistant layer 205 can be with pi
On the basis of screen anti-scratch material.In addition, anti-scratch material may also be glass or similar material, scratch-resistant layer can be glass
Layer.
In the aforementioned embodiment, multiple sensing blocks can also be arranged, for example, multiple line styles are sequentially arranged with preset direction
Sense block, or the layout type, such as the multiple linear semiconductor optics such as arrangement light source between multiple sensing blocks
Sensing block is disposed adjacent or separately set with multiple light sources, for further obtaining more preferably optical imaging results, due to
Its sensing principle is identical, therefore no longer separately describes schema.
The purposes of aforesaid base plate 102 is electrical connection light source 101 and sensor pixel 103, and allows light source by light
Squeeze into tissue and play a role, therefore can be the soft substrate plate with pliability, or partially hard hard base
Plate.
The semiconductor optical sensing block of the present invention can directly allow user to stick finger or body surface and use,
Image-zooming, conduction light etc. effect are carried out without other optical facilities, its slim and durable feature can make this
Invention is applied on portable electronic device, is set such as notebook computer, tablet PC, mouse, mobile phone, TV remote controller
It is standby.The present invention is also applicable on other electronic equipments in addition, such as automobile door lock and steering wheel, locomotive lock and handle, electricity
The equipment such as cervical orifice of uterus lock, household electrical appliance, various electronic switch.
In the aforementioned embodiment, light source used in coordinating, in the manufacturing process of sensor pixel, can be added different
Light wave filter, is absorbed to enable desired light to be sensed pixel by wave filter.Wave filter can be with semiconductor
Processing procedure coordinates, and is formed at using existing technology on sensor pixel, also can be additionally formed at it after the completion of sensor pixel
On.By being mixed into filtering material in protective layer and/or flatness layer, it can also make protective layer and/or flatness layer that there is filtering to imitate
Really.That is, different sensor pixels described in the embodiment of the present invention can be the sensor pixel for coordinating different filters, rather than sense
It is different between surveying pixel in itself.
Although the present invention is disclosed with previous embodiment, so it is not intended to limit the present invention, skill belonging to any present invention
Have usually intellectual in art field, without departing from the spirit and scope of the invention, when can make various changes with modification.Cause
The protection domain of this present invention when depending on after the attached claim person of defining be defined.
Claims (20)
1. a kind of slim physiological characteristic detection module, at least one physiological characteristic for detecting body part, the slim life
Reason feature detection module is included：
Substrate, with substrate surface；
Chip, is arranged on the substrate surface and senses block comprising semiconductor optical；
At least one light source, is arranged on the substrate surface；And
Scratch-resistant layer, is formed on the chip surface of the chip, and the chip surface is to the upper surface of the scratch-resistant layer
Distance is less than 100 microns,
Wherein, when detecting the physiological characteristic, the upper surface of the scratch-resistant layer is used to directly connect for the body part
Touch and between semiconductor optical sensing block and the body part without the optical facilities for carrying out image-zooming, so that institute
State light direct illumination human body surface that light source sent and through the body part via after the scratch-resistant layer by described half
Conductor optical sensing block is sensed.
2. slim physiological characteristic detection module according to claim 1, wherein between the scratch-resistant layer and the chip surface
Also include flatness layer.
3. slim physiological characteristic detection module according to claim 1, different wave length is sent comprising two kinds of light sources respectively
Light, the semiconductor optical sensing block is respectively used to sense the light of the different wave length comprising two kinds of sensor pixels.
4. slim physiological characteristic detection module according to claim 1, is also incorporated into the chip comprising control module
Or set on the substrate, for controlling the light source and the semiconductor optical to sense block.
5. slim physiological characteristic detection module according to claim 4, wherein the control module is according to the semiconductor
Optical sensing block detects the physiological characteristic in the optical image acquired in different time or same time.
6. slim physiological characteristic detection module according to claim 4, wherein the control module controls the semiconductor
Optical sensing block obtains optical image with speed more than 300 frame per second.
7. slim physiological characteristic detection module according to claim 1, wherein the distance of the chip and the light source is small
In 8 millimeters.
8. slim physiological characteristic detection module according to claim 1, wherein the physiological characteristic include blood oxygen concentration, it is quiet
Vein road, fingerprint, pulse and/or blood pressure.
9. slim physiological characteristic detection module according to claim 1, wherein semiconductor optical sensing block is included
Sleeve configuration or multiple sensor pixels of block type arrangement.
10. slim physiological characteristic detection module according to claim 1, wherein the light-emitting area of the light source and the substrate
The distance on surface is same as the upper surface of the scratch-resistant layer and the distance of the substrate surface.
11. a kind of slim physiological characteristic detection module, at least one physiological characteristic for detecting body part, the slim life
Reason feature detection module is included：
Multiple linear semiconductor optical sensing blocks；
At least one light source；
Scratch-resistant layer, is covered on the multiple linear semiconductor optical sensing block, and the thickness of the scratch-resistant layer is less than 100
Micron；And
Control module, the multiple linear semiconductor optical sensing block of electric property coupling and the light source, for according to different
Linear semiconductor optical sensing block obtains the optical image of the human body surface of the body part in different time to detect
State physiological characteristic,
Wherein, when detecting the physiological characteristic, the upper surface of the scratch-resistant layer be used to directly contact for the human body surface and
Without the optical facilities for carrying out image-zooming between the multiple linear semiconductor optical sensing block and the human body surface, with
Make human body surface described in the light direct illumination that the light source sent and through the body part via the scratch-resistant layer after
By the multiple linear semiconductor optical sensing block sensing.
12. slim physiological characteristic detection module according to claim 11, wherein the scratch-resistant layer with it is the multiple linear
Flatness layer is also included between semiconductor optical sensing block, and the scratch-resistant layer and the total height of the flatness layer are less than 100 microns.
13. slim physiological characteristic detection module according to claim 11, different wave length is sent comprising two kinds of light sources respectively
Light, the multiple linear semiconductor optical sensing block is respectively used to sense the different wave length comprising two kinds of sensor pixels
Light.
14. slim physiological characteristic detection module according to claim 11, wherein the multiple linear semiconductor optics sense
Survey block arranged in parallel along preset direction.
15. slim physiological characteristic detection module according to claim 11, wherein control module control is the multiple
Linear semiconductor optical sensing block obtains optical image with speed more than 300 frame per second.
16. slim physiological characteristic detection module according to claim 11, wherein the multiple linear semiconductor optics sense
The distance for surveying block and the light source is less than 8 millimeters.
17. slim physiological characteristic detection module according to claim 11, wherein the physiological characteristic includes fingerprint, vein
Lines, pulse and/or blood pressure.
18. slim physiological characteristic detection module according to claim 11, wherein the light-emitting area of the light source resists with described
The upper surface of scratch layers has identical height.
19. slim physiological characteristic detection module according to claim 11, wherein the multiple linear semiconductor optics sense
Block is surveyed to be disposed adjacent or separately set with multiple light sources.
20. a kind of slim physiological characteristic detection module, at least one physiological characteristic for detecting body part, the slim life
Reason feature detection module is included：
Semiconductor optical senses block, with the multiple of the human body surface of the speed acquisition body part more than 300 frame per second
Optical image；
At least one light source；
Scratch-resistant layer, is covered on the semiconductor optical sensing block, and the thickness of the scratch-resistant layer is less than 100 microns；With
And
Control module, semiconductor optical sensing block and the light source described in electric property coupling, for according to the semiconductor optical
The surface image for the related human body surface of the multiple optical image generation that sensing block is obtained in different time, and according to
The surface image detects the physiological characteristic,
Wherein, when detecting the physiological characteristic, the upper surface of the scratch-resistant layer be used to directly contact for the human body surface and
Without the optical facilities for carrying out image-zooming between the semiconductor optical sensing block and the human body surface, so that the light
Human body surface described in the light direct illumination that source is sent and through the body part via after the scratch-resistant layer by described half
Conductor optical sensing block is sensed.
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| CN101169824B (en) * | 2006-10-25 | 2011-04-20 | 原相科技股份有限公司 | Fingerprint identification device and method |
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