CN104545842B - Thin physiological characteristic detection module - Google Patents

Abstract

The present invention relates to a thin physiological characteristic detection module, which can detect physiological characteristics by detecting scattered light scattered by body tissue after absorbing light without attaching any additional optical mechanism to the semiconductor optical sensing pixel.

Description

Thin Physiological Feature Detection Module

technical field

The invention relates to a thin physiological feature detection module. Further, the present invention relates to a module capable of detecting physiological characteristics by detecting scattered light scattered by body tissue after absorbing light without adding any additional optical mechanism to the semiconductor optical sensing pixel.

Background technique

In the known technology, an optical module for detecting physiological features is usually used to detect fingers to obtain physiological feature information. According to the user's use state, there are two forms, one is fixed-type sensing where the hand is placed on the detection module, and the other is mobile-type sensing where the finger slides over the detection module. In order to obtain good optical imaging, it is generally necessary to configure an optical mechanism to assist in imaging. For example, the PU900-10 fingerprint detector launched by NEC occupies a significant volume.

With the evolution of life, portable electronic products have become popular, such as notebook computers, mobile phones, and tablet computers. Because most of these products emphasize light and thin volume and weight, oversized physiological feature detection modules are not suitable for application in portable electronic products. Therefore, the physiological feature detection modules widely used in portable electronic products are almost all Application of electronic detection technology. Taking the capacitive fingerprint detection module as an example, it has a detection surface. When a finger is placed on the detection surface, the peak and valley distances of the fingerprint are different to generate different electric field signals, and the multiple electric field signals can be processed. An image representing a fingerprint for subsequent comparison operations.

Contents of the invention

One of the objectives of the present invention is to provide a thin physiological feature detection module, which has a semiconductor optical sensing block, a substrate, and at least one light source, wherein the light source is electrically connected to the semiconductor optical sensing block and the substrate. connected to be controlled by a control module, the control module may be integrated with the semiconductor optical sensing block, or be an independent circuit and electrically connected to the substrate. The present invention is characterized in that it has a very thin semiconductor optical sensing block, and at the same time, no additional optical mechanism is needed on the sensing block, and it can be placed on the module by fingers or body parts to obtain sufficient physiological characteristic information.

In order to achieve the aforementioned purpose, the light emitted by the light source will enter the human body, and the light passing through the human body will leave the surface of the human body in a scattered manner, and the semiconductor optical sensing block has a very thin surface structure, so that the light can leave When it is on the surface of the body, it can reach the sensing block through a very short optical path, and at the same time, there is no additional optical mechanism to counteract the light, so that the sensing block can obtain enough characteristic information for subsequent processing. The optical sensing block has a thin and scratch-resistant surface layer.

One of the objectives of the present invention is to provide a thin physiological feature detection module, which has a semiconductor optical sensing block, a substrate, and at least one light source, wherein the light source is electrically connected to the semiconductor optical sensing block and the substrate. connected to be controlled by a control module, the control module may be integrated with the semiconductor optical sensing block, or be an independent circuit and electrically connected to the substrate. The present invention is characterized in that it has a very thin semiconductor optical sensing block, and at the same time, no additional optical mechanism is needed on the sensing block, and it can be placed on the module by fingers or body parts to obtain sufficient physiological characteristic information. And the optical sensing block is provided with at least two sensing pixels at two different positions relative to the moving direction of the finger according to the moving direction of the finger, so as to sense the optical image of the finger at different times when necessary. The time difference between them is used to calculate the desired physiological characteristics.

One of the objectives of the present invention is to provide a thin physiological feature detection module, which has a semiconductor optical sensing block, a substrate, and at least one light source, wherein the light source is electrically connected to the semiconductor optical sensing block and the substrate. connected to be controlled by a control module, the control module may be integrated with the semiconductor optical sensing block, or be an independent circuit and electrically connected to the substrate. The present invention is characterized in that it has a very thin semiconductor optical sensing block, and at the same time, no additional optical mechanism is needed on the sensing block, and it can be placed on the module by fingers or body parts to obtain sufficient physiological characteristic information. And the optical sensing block is provided with at least two different sensing pixels to respectively sense different optical images of the finger when necessary, and thus calculate the required physiological characteristics.

One of the objectives of the present invention is to provide a thin physiological feature detection module, which has a semiconductor optical sensing block, a substrate, and a plurality of light sources, wherein the plurality of light sources have different wavelengths, and the plurality of light sources and the semiconductor The optical sensing block is electrically connected to the substrate to be controlled by a control module, and the control module can be integrated with the semiconductor optical sensing block, or is an independent circuit and is electrically connected to the substrate , the semiconductor optical sensing block can emit light corresponding to the plurality of light sources to sense light. The present invention is characterized in that it has a very thin semiconductor optical sensing block, and at the same time, no additional optical mechanism is needed on the sensing block, and it can be placed on the module by fingers or body parts to obtain sufficient physiological characteristic information.

In order to achieve the aforementioned purpose, the light emitted by the light source will enter the human body, and the light passing through the human body will leave the surface of the human body in a scattered manner, and the semiconductor optical sensing block has a very thin surface structure, so that the light can leave When it is on the surface of the body, it can reach the sensing block through a very short optical path, and at the same time, there is no additional optical mechanism to counteract the light, so that the sensing block can obtain enough characteristic information for subsequent processing. The optical sensing block has a thin and scratch-resistant surface layer.

The present invention provides a thin physiological feature detection module for detecting at least one physiological feature of a body part. The thin physiological feature detection module includes: a substrate, a chip, at least one light source and an anti-scratch layer. The substrate has a substrate surface. The chip is arranged on the surface of the substrate and includes a semiconductor optical sensing block. The at least one light source is disposed on the surface of the substrate. The scratch-resistant layer is formed on the chip surface of the chip and the distance from the chip surface to the upper surface of the scratch-resistant layer is less than 100 microns, wherein when the physiological characteristics are detected, the scratch-resistant layer The upper surface is used for direct contact with the body part, so that the light emitted by the light source directly illuminates the surface of the human body and passes through the body part to pass through the anti-scratch layer and then be captured by the semiconductor optical sensing area block sensing.

The present invention provides a thin physiological feature detection module for detecting at least one physiological feature of a body part. The thin physiological feature detection module includes: a plurality of linear semiconductor optical sensing blocks, at least one light source, an anti-scratch layer and a control module. The anti-scratch layer covers the plurality of linear semiconductor optical sensing blocks, and the thickness of the anti-scratch layer is less than 100 microns. The control module is electrically coupled to the plurality of linear semiconductor optical sensing blocks and the light source, and is used to obtain optical images of the human body surface of the body part at different times according to different linear semiconductor optical sensing blocks to detect the physiological characteristics, wherein, when detecting the physiological characteristics, the upper surface of the scratch-resistant layer is used for direct contact with the human body surface, so that the light emitted by the light source directly illuminates the human body surface And pass through the body part and pass through the anti-scratch layer to be sensed by the plurality of linear semiconductor optical sensing blocks.

The present invention provides a thin physiological feature detection module for detecting at least one physiological feature of a body part. The thin physiological feature detection module includes: a semiconductor optical sensing block, at least one light source, an anti-scratch layer and a control module. The semiconductor optical sensing block acquires multiple optical images of the human body surface of the body part at a speed of more than 300 frames per second. The anti-scratch layer covers the semiconductor optical sensing block, and the thickness of the anti-scratch layer is less than 100 microns. The control module is electrically coupled to the semiconductor optical sensing block and the light source, and is used to generate images related to the human body surface according to the plurality of optical images acquired by the semiconductor optical sensing block at different times. surface image, and detect the physiological feature according to the surface image, wherein, when detecting the physiological feature, the upper surface of the scratch-resistant layer is used for direct contact with the human body surface, so that the light source emits The light directly illuminates the surface of the human body and passes through the body part to be sensed by the semiconductor optical sensing block after passing through the anti-scratch layer.

In the thin physiological feature detection module of the present invention, the control module can be based on the optical images of the same area of the human body surface acquired by the semiconductor optical sensing block at different times or the images of different areas of the human body surface acquired at the same time The optical image detects physiological features; wherein, the control module can be integrated in the chip or arranged on the substrate.

Description of drawings

Figure 1 depicts an embodiment of the invention;

2a and 2b depict a schematic top view of the semiconductor optical sensing block of the present invention;

Figures 3a and 3b depict a schematic top view of the thin physiological feature detection module of the present invention;

4a and 4b depict schematic cross-sectional views of the semiconductor optical sensing block of the present invention.

Explanation of reference signs

101 light source 102 substrate

102S substrate surface 103 sensing pixels

104 thin semiconductor structure 105 contacts

13 fingers 201 chip structure

201S chip surface 203 flat layer

205 Anti-scratch layer

detailed description

The following description contains several embodiments of the present invention, including schematic diagrams of the user's operation, so as to understand how the present invention is applied to actual operating conditions. It should be noted that in the following drawings, the parts irrelevant to the technology of the present invention have been omitted. At the same time, in order to highlight the relationship between the components, the ratio between the components in the drawings is not the same as the ratio between the real components. Must be the same.

FIG. 1 depicts an embodiment of the present invention, including at least one light source 101, a substrate 102, a plurality of sensing pixels 103, and a plurality of contacts 105; wherein, the plurality of sensing pixels 103 constitute a semiconductor optical sensing block, which There is a thin semiconductor structure 104 (further illustrated in FIGS. 4 a and 4 b ). The plurality of contacts 105 are used to electrically connect the semiconductor optical sensing block to the substrate 102 to be controlled by a control module (not shown); wherein, the plurality of sensing pixels 103 can be located on the chip 201 and the plurality of contacts 105 can be used as electrical contacts of the chip 201 to the outside. The light source 101 is also electrically connected to the substrate 102, and the control module is used to control the light source 101 to emit light, so that the emitted light enters the user's body tissue (which can be an appropriate body part), for example, in In this embodiment, it is represented by a finger 13 . At the same time, the control module also controls the plurality of sensing pixels 103 to sense the light transmitted from the finger 13 . Since blood vessels, blood, and fingerprints on the surface of the finger all have different optical properties, by arranging a specific light source 101, the optical images sensed by the plurality of sensing pixels 103 can be used to determine physiological characteristics .

In more detail, the control module may be integrated in the chip 201 or disposed on the substrate 102 (which may be located on the same or different surface of the substrate 102 as the chip 201), for controlling the light source 101 and the semiconductor optical sensing block. The substrate 102 has a substrate surface 102S, and the chip 201 and the light source 101 are configured to be disposed on the substrate surface 102S. In this embodiment, in order to effectively reduce the overall volume, the relative distance between the chip 201 and the light source 101 is preferably less than 8 millimeters.

In this embodiment, the contact 105 can be a lead frame structure. In other embodiments, the contact 105 can also be in the form of bumps, ball arrays, wires, etc., which is not intended to limit the present invention.

For example, when the fingerprint of the finger 13 is to be sensed, the light source 101 can be arranged to be infrared invisible light, so that the user will not feel dazzling. If it is necessary for the user to have the feeling of being detected, visible light of other colors can also be used instead. After the light enters the finger, it will scatter and diffuse in the internal tissue, and when it comes to the inner surface of the fingerprint, it will penetrate the outer surface of the fingerprint. block) scattered out, the light will diverge, and the sensing pixels 103 directly below it will sense less light and form dark lines; When the light is scattered, the sensing pixels 103 directly below it will sense more light, thus forming bright lines. These changes in light and dark lines can represent the characteristics of fingerprints.

When the area of the sensing block is large enough to obtain enough fingerprint features, the user only needs to roughly align the center of the fingerprint surface of the finger with the sensing block, and then press it without sliding the finger to make the sensing block The detection block can continuously obtain fingerprint-related images. A sufficiently large sensing block area can exceed 25mm ² .

In this embodiment, the semiconductor sensing block can continuously acquire images at a speed of more than hundreds of frames per second, for example, the control module controls the semiconductor optical sensing block to acquire images at a speed of more than 300 frames per second. Acquire optical images at a high speed and control the light source 101 to cooperate with image acquisition to emit light, so sufficient and continuous fingerprint images can be obtained, and a larger fingerprint image that is sufficient to obtain representative fingerprint features can be pieced together. In other words, the control module can detect physiological features according to the optical images of the same or different part of the human body surface area acquired by the semiconductor optical sensing block at different times.

2a and 2b depict schematic top views of the semiconductor optical sensing block of the present invention. Figure 2a represents a sensing block 21a that is close to a linear shape. It can be seen from the figure that a plurality of sensing pixels 103 are arranged in a narrow and long shape, and its lateral width is close to the width of a thumb, for example, 1 cm wide. Or obtain sufficient information when sliding to obtain fingerprints; in addition, its vertical width can be very narrow, for example, only 0.3-2mm wide, because the sensing block can continuously acquire images at high speed, so when the user's finger slides over the sensing block Continuous and sufficient images can still be acquired. For example, when the user's finger slides across the sensing surface at a speed of 10 cm per second, and the sensing surface can capture images at a frequency of 500 frames per second, the distance between each image is 0.2mm , still within the range of the vertical width, so the sensing block can acquire continuous images. Since the present invention can acquire images at a frequency exceeding 1000 frames per second, it can ensure that continuous and sufficient images can still be acquired in a narrow vertical width state. These images can be used to piece together fingerprints or vein patterns in the user's body for the purpose of identifying the user. In other words, the control module can detect the physiology according to the optical images of part of the same or different human body surface areas acquired by the semiconductor optical sensing block (for example, the linear semiconductor optical sensing block at this time) at different times. feature. For example, in one embodiment, the control module can be used to generate surface images of relevant body parts based on the optical images acquired by the semiconductor optical sensing block at different times, and detect physiological characteristics based on the surface images, for example, to collect Fingerprint or vein pattern.

When detecting other physiological characteristics, such as blood oxygen concentration, heartbeat (pulse), blood pressure, etc., since the user will not quickly slide the finger or measure the surface, the width of the sensing area will not seriously affect the sensor. test results. In another embodiment, a plurality of linear semiconductor optical sensing blocks can be arranged in parallel along a predetermined direction (for example, a longitudinal width direction), and the human body surface of the body part slides along the predetermined direction, and the control The module can detect physiological features according to the optical images of the same body surface area acquired by the semiconductor optical sensing block (for example, the linear semiconductor optical sensing block at this time) at different times.

FIG. 2 b represents a sensing block 21 b that is close to a block type. The difference from FIG. 2 a is that the pixel arrangement presents a block type, and the ratio of the horizontal width to the vertical width can be between 0.5 and 2. In this way, whether the user wants to detect vein patterns, fingerprints, or blood oxygen concentration, heartbeat, blood pressure and other physiological characteristics, he only needs to attach his finger or body surface to the sensing block without sliding or moving. Therefore, compared with the linear sensing block, it is beneficial to detect multiple physiological characteristics at the same time. The sensing area of the sensing block 21b should be at least larger than 25mm ² .

3a and 3b depict a schematic top view of the thin physiological feature detection module of the present invention. It is mainly used to illustrate how the light source can be configured, and how to apply multiple light sources. In FIG. 3 a , it is depicted that the light source 101 is placed on one side of the plurality of sensing pixels 103 and is electrically connected to the substrate 102 . In this embodiment, it is worth noting that, taking the user's finger as an example, although the light source 101 is placed on one side of the sensing pixel 103, since the light penetrates into the user's body tissue, the position of the light source is not To affect the direction of finger placement, it is only necessary that the finger is continuously illuminated by the light source during the sensing process.

In Fig. 3b, two different light sources 101a and 101b are depicted. In this embodiment, different light sources refer to light sources capable of emitting light of different wavelengths. Since the components in human tissue have different reactions to light of different wavelengths, such as different absorption rates, through the sensing of different light sources, the physiological characteristics related to the light wavelength can be deduced. Sensing images of different light sources are used for mutual correction to obtain more accurate sensing results. For example, the oxygen content in the blood has different absorption rates for different colors of light. Therefore, by sensing the energy of different colors of light, the blood oxygen concentration can be deduced. For another example, when the user slides the finger, the sensing pixels at different positions sense the same image at different time points, that is, there is a time difference, so it can be used as a reference for mutual correction. In other words, the thin physiological feature detection module of this embodiment may include two light sources emitting light of different wavelengths respectively, and the semiconductor optical sensing block includes two kinds of sensing pixels for sensing light of different wavelengths respectively.

For example, if blood oxygen concentration detection is to be performed, light with two wavelengths around 805nm at the absorption point of HbO2 and Hb can be used, for example, light with a wavelength of about 660nm and a wavelength of about 940nm can be selected. Or you can choose 730-810nm or 735-895nm light. The blood oxygen concentration can be deduced from the difference in the absorbance of the two wavelengths of light by the blood. Relevant measurement techniques are well known to those skilled in the art and will not be repeated here.

Through the understanding of Figures 3a and 3b, it can be known that the present invention can apply multiple light sources, not limited to a single light source or two light sources, and can arrange different sensing pixels according to the physiological characteristics to be measured to correspond to more There are many light sources, and the position of the light source is not certain. In the case of thin architectures, the present invention is applicable to many physiological feature sensing. For fingerprint detection, it is only necessary to arrange two light sources on one side to obtain sufficient changes in bright and dark lines; therefore, different light sources can be placed together to detect other physiological characteristics. In order to obtain a more uniform image, the same light source can be arranged on both sides of the same sensing block, so that the light can enter the user's body tissue from both sides of the sensing block at the same time.

4a and 4b depict a schematic cross-sectional view of a semiconductor optical sensing block of the present invention, and a partial schematic view of a thin semiconductor structure 104 thereof. Figure 4a depicts an embodiment in which the planar layer 203 has scratch resistance at the same time, for example, polyimide (Polyimide) is used as the material of the planar layer 203, so that it has sufficient scratch resistance and can be applied in the present invention; that is, at this time The flat layer 203 is used as an anti-scratch layer. The flat layer 203 is formed on the top of the chip structure 201 on the chip surface 201S, and covers the semiconductor optical sensing area to protect the semiconductor structure 104 . Since the chip structure 201 is formed on top of it, there may be many bumps (as shown in the figure) after the formation of the metal layer and electrodes due to the semiconductor layout, which is not conducive to optical sensing and is also less weather-resistant. , so forming the planar layer 203 on the uppermost part makes the thin semiconductor structure 104 have a planar surface, which is more favorable for application in the present invention. In the present invention, the thin semiconductor structure 104 will be frequently exposed to the air and in contact with the user's body, so it needs to have better scratch resistance; in today's semiconductor manufacturing technology, polyimide can be used as the Benchmark to screen scratch-resistant materials. At the same time, the flat layer 203 needs to have the property that visible light or invisible light can pass through, and it can be selected with a light source. In addition, the scratch-resistant material can also be glass or similar materials, and the scratch-resistant layer can be a glass layer.

It should be noted that, in order to reduce the diffusion effect that may occur when light passes through the flat layer 203, resulting in blurred images, the preferred distance from the surface of the semiconductor structure 104 to the surface of the chip structure 201 is, in this embodiment, The height of the flat layer 203 needs to be limited to less than 100 micrometers (μm). That is, the distance from the chip surface 201S to the upper surface of the flat layer 203 (ie, the scratch-resistant layer) is preferably less than 100 microns. When detecting physiological characteristics, the upper surface of the flat layer 203 is used for direct contact with body parts, so that the light emitted by the light source 101 directly illuminates the surface of the human body and passes through the body parts through the flat layer 203. Afterwards, it is sensed by the semiconductor optical sensing block. In one embodiment, the distance between the light emitting surface of the light source 101 and the substrate surface 102S may be the same as the distance between the upper surface of the planar layer 203 and the substrate surface 102S. That is to say, when the light-emitting surface of the light source 101 has the same height as the upper surface of the planar layer 203, the light emitted by the light source 101 can efficiently pass through the surface of the human body to enter the body part to be received. Semiconductor optical sensing block sensing.

The difference between FIG. 4 b and FIG. 4 a is that the planar layer 203 in FIG. 4 b does not have sufficient scratch resistance, so another scratch-resistant layer 205 is formed on the planar layer 203 . Similarly, in order to reduce the possible diffusion effect of light passing through the planar layer 203 and the scratch-resistant layer 205 , the total height of the planar layer 203 and the scratch-resistant layer 205 needs to be limited below 100 microns in this embodiment. In this embodiment, the scratch resistance of the flat layer 203 need not be considered, and the scratch resistance layer 205 can use polyimide as a benchmark to select the scratch resistance material. In addition, the scratch-resistant material can also be glass or similar materials, and the scratch-resistant layer can be a glass layer.

In the foregoing embodiments, multiple sensing blocks can also be arranged, for example, arranging multiple linear sensing blocks in a predetermined direction, or arranging light sources among multiple sensing blocks, for example The multiple linear semiconductor optical sensing blocks are arranged adjacent to each other or spaced apart from multiple light sources for further obtaining better optical imaging results. Since the sensing principles are the same, no further drawings are drawn here.

The purpose of the aforementioned substrate 102 is to electrically connect the light source 101 and the sensing pixels 103, so that the light source can inject light into human tissue to play a role. Therefore, it can be a flexible soft substrate, or a hard substrate. Hard substrate.

The semiconductor optical sensing block of the present invention can directly allow users to stick their fingers or body surface for use, without the need for other optical mechanisms to perform functions such as image scaling, light transmission, etc., and its thin and durable features can enable the application of the present invention On portable electronic devices, such as laptops, tablet computers, mice, mobile phones, TV remote controls and other devices. In addition, the present invention can also be applied to other electronic devices, such as automobile door locks and steering wheels, motorcycle locks and handles, electronic door locks, household appliances, various electronic switches and other equipment.

In the foregoing embodiments, in conjunction with the light source used, different light filters may be added during the manufacturing process of the sensing pixels, so that desired light can pass through the filters and be absorbed by the sensing pixels. The filter can cooperate with the semiconductor manufacturing process and be formed on the sensing pixel by using the existing technology, and can also be formed on the sensing pixel after the sensing pixel is completed. By mixing filter material into the protective layer and/or the flat layer, the protective layer and/or the flat layer can also have a filtering effect. That is to say, the different sensing pixels in the embodiment of the present invention may be sensing pixels equipped with different filters, rather than the sensing pixels themselves being different.

Although the present invention has been disclosed by the foregoing embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field of the present invention can make various changes without departing from the spirit and scope of the present invention. with modification. Therefore, the scope of protection of the present invention should be defined by the scope of the appended patent application.

Claims (20)

1. A thin physiological feature detection module for detecting at least one physiological feature of a body part, the thin physiological feature detection module comprising: a substrate having a substrate surface; A chip is arranged on the surface of the substrate and includes a semiconductor optical sensing block; at least one light source disposed on the substrate surface; and a scratch-resistant layer formed on the chip surface of the chip, and the distance from the chip surface to the upper surface of the scratch-resistant layer is less than 100 microns, Wherein, when detecting the physiological characteristics, the upper surface of the scratch-resistant layer is used for direct contact with the body part, and there is no image scaling between the semiconductor optical sensing block and the body part. The optical mechanism is such that the light emitted by the light source directly illuminates the surface of the human body and passes through the body part to be sensed by the semiconductor optical sensing block after passing through the anti-scratch layer. 2. The thin physiological feature detection module according to claim 1, wherein a flat layer is further included between the scratch-resistant layer and the surface of the chip. 3. The thin physiological feature detection module according to claim 1, comprising two light sources emitting light of different wavelengths respectively, and the semiconductor optical sensing block comprises two kinds of sensing pixels for sensing light of different wavelengths respectively Light. 4. The thin physiological feature detection module according to claim 1, further comprising a control module integrated in the chip or disposed on the substrate for controlling the light source and the semiconductor optical sensing block. 5. The thin physiological feature detection module according to claim 4, wherein the control module detects the physiological feature according to the optical images acquired by the semiconductor optical sensing block at different times or at the same time. 6. The thin physiological feature detection module according to claim 4, wherein the control module controls the semiconductor optical sensing block to acquire optical images at a speed of more than 300 frames per second. 7. The thin physiological feature detection module according to claim 1, wherein the distance between the chip and the light source is less than 8 mm. 8. The thin physiological feature detection module according to claim 1, wherein the physiological features include blood oxygen concentration, vein pattern, fingerprint, pulse and/or blood pressure. 9 . The thin physiological feature detection module according to claim 1 , wherein the semiconductor optical sensing block comprises a plurality of sensing pixels arranged in an elongated shape or in a block shape. 10. The thin physiological feature detection module according to claim 1, wherein the distance between the light-emitting surface of the light source and the substrate surface is the same as the distance between the upper surface of the scratch-resistant layer and the substrate surface. 11. A thin physiological feature detection module for detecting at least one physiological feature of a body part, said thin physiological feature detection module comprising: Multiple linear semiconductor optical sensing blocks; at least one light source; a scratch-resistant layer covering the plurality of linear semiconductor optical sensing blocks, and the thickness of the scratch-resistant layer is less than 100 microns; and A control module, electrically coupled to the plurality of linear semiconductor optical sensing blocks and the light source, for acquiring optical images of the human body surface of the body parts at different times according to different linear semiconductor optical sensing blocks to detecting said physiological characteristic, Wherein, when detecting the physiological characteristics, the upper surface of the anti-scratch layer is used for direct contact with the human body surface and there is no image scaling between the plurality of linear semiconductor optical sensing blocks and the human body surface an optical mechanism, so that the light emitted by the light source directly illuminates the surface of the human body, passes through the body part, passes through the anti-scratch layer, and is sensed by the plurality of linear semiconductor optical sensing blocks. 12. The thin physiological feature detection module according to claim 11, wherein a flat layer is further included between the scratch-resistant layer and the plurality of linear semiconductor optical sensing blocks, and the scratch-resistant layer and the flat layer The total height is less than 100 microns. 13. The thin physiological feature detection module according to claim 11, comprising two kinds of light sources respectively emitting light of different wavelengths, said plurality of linear semiconductor optical sensing blocks comprising two kinds of sensing pixels for sensing said light of different wavelengths. 14. The thin physiological feature detection module according to claim 11, wherein the plurality of linear semiconductor optical sensing blocks are arranged in parallel along a predetermined direction. 15 . The thin physiological feature detection module according to claim 11 , wherein the control module controls the plurality of linear semiconductor optical sensing blocks to acquire optical images at a speed of more than 300 frames per second. 16. The thin physiological feature detection module according to claim 11, wherein the distance between the plurality of linear semiconductor optical sensing blocks and the light source is less than 8 mm. 17. The thin physiological feature detection module according to claim 11, wherein the physiological features include fingerprints, vein patterns, pulse and/or blood pressure. 18. The thin physiological feature detection module according to claim 11, wherein the light-emitting surface of the light source has the same height as the upper surface of the scratch-resistant layer. 19. The thin physiological feature detection module according to claim 11, wherein the plurality of linear semiconductor optical sensing blocks are disposed adjacent to each other or spaced apart from the plurality of light sources. 20. A thin physiological feature detection module for detecting at least one physiological feature of a body part, the thin physiological feature detection module comprising: The semiconductor optical sensing block acquires multiple optical images of the human body surface of the body part at a speed of more than 300 frames per second; at least one light source; a scratch-resistant layer covering the semiconductor optical sensing block, and the thickness of the scratch-resistant layer is less than 100 microns; and A control module, electrically coupled to the semiconductor optical sensing block and the light source, for generating a surface related to the human body surface according to the plurality of optical images acquired by the semiconductor optical sensing block at different times image, and detecting said physiological feature based on said surface image, Wherein, when detecting the physiological characteristics, the upper surface of the anti-scratch layer is used for direct contact with the surface of the human body, and there is no optical mechanism for image scaling between the semiconductor optical sensing block and the surface of the human body so that the light emitted by the light source directly illuminates the surface of the human body, passes through the body part, passes through the anti-scratch layer, and is sensed by the semiconductor optical sensing block.