CN105762157B - A kind of Ultraviolet sensor and preparation method thereof, electronic equipment - Google Patents

Abstract

The embodiment of the present invention provides a kind of Ultraviolet sensor and preparation method thereof, electronic equipment, is related to electronic equipment manufacturing field, the cruising ability of electronic equipment can be improved.The Ultraviolet sensor, including substrate, at least one solar battery and at least one uv monitoring device of setting over the substrate；Wherein, mutually insulated between the solar battery and the uv monitoring device.Electronic equipment is dressed for intelligence.

Description

A kind of ultraviolet sensor and its preparation method, electronic device

technical field

The invention relates to the field of electronic equipment manufacturing, in particular to an ultraviolet sensor, a preparation method thereof, and electronic equipment.

Background technique

Wearable smart electronic device is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices. At present, wearable technology is widely used in various electronic devices, such as wearable watches, bracelets, pendants, decorations, etc.

Among them, in the wearable smart electronic device, the sensor is an indispensable device, and the detection of ultraviolet light, gas, etc. can be realized by setting the corresponding sensor.

However, since the battery life of wearable smart electronic devices depends on their own configured batteries, with the miniaturization of electronic devices, in order to save space, the size of the battery is correspondingly small, which leads to the current battery life of electronic products. are poor.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide an ultraviolet sensor, a preparation method thereof, and an electronic device, which can improve the battery life of the electronic device.

To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

In a first aspect, an ultraviolet sensor is provided, comprising a substrate, at least one solar cell disposed on the substrate, and at least one ultraviolet detection element; wherein, the solar cell and the ultraviolet detection element are insulated from each other .

Preferably, the ultraviolet detection element is arranged in the middle of the substrate.

Further preferably, there are a plurality of the solar cells; a plurality of the solar cells and at least one of the ultraviolet detection elements are arranged in an array.

Preferably, the area of the ultraviolet detection element is 2-8 μm ² .

Preferably, the solar cell includes a first electrode, a second electrode and a first N-type semiconductor layer and a first P-type semiconductor layer located therebetween; the ultraviolet detection element includes a third electrode, a fourth electrode and A second N-type semiconductor layer and a second P-type semiconductor layer located therebetween; wherein, the solar cell and the ultraviolet detection element have the same structure.

Further preferably, the second electrode includes a first sub-section of the second electrode and a second sub-section of the second electrode that are electrically coupled; the first electrode and the first sub-section of the second electrode are close to the the substrate and spaced apart; a second sub-portion of the second electrode is disposed away from the substrate.

The fourth electrode includes a first sub-portion of the fourth electrode and a second sub-portion of the fourth electrode that are electrically coupled; the third electrode and the first sub-portion of the fourth electrode are adjacent to the substrate and spaced apart disposed; the second sub-portion of the fourth electrode is disposed away from the substrate.

In a second aspect, an electronic device is provided, including a control circuit board, the control circuit board including a controller, the electronic device further including the ultraviolet sensor of the first aspect provided on the control circuit board, the ultraviolet sensor The sensor is connected with the controller; wherein, the controller is used to control the ultraviolet detection element in the ultraviolet sensor to work, and when the voltage provided by the solar cell is less than the working voltage of the ultraviolet detection element, control the power supply module to The ultraviolet detection element is powered.

Preferably, the power supply module is a battery; the controller is further configured to supply power to the battery when the voltage provided by the solar cell is greater than the working voltage of the ultraviolet detection element.

Preferably, the electronic device further includes a wireless transmission module disposed on the control circuit board, for transmitting the data collected by the ultraviolet sensor to an external terminal.

Preferably, the electronic device further includes a display module for displaying the data collected by the ultraviolet sensor.

In a third aspect, a method for preparing an ultraviolet sensor is provided, including: using IC packaging to package at least one ultraviolet detection element and at least one solar cell in the same chip.

Preferably, forming the solar cell includes: forming a first electrode, a second electrode, and a first N-type semiconductor layer and a first P-type semiconductor layer between them on a substrate through a patterning process; forming the ultraviolet The detection element includes: forming a third electrode, a fourth electrode, and a second N-type semiconductor layer and a second P-type semiconductor layer between them on the substrate through a patterning process; wherein, all the solar cells are The first electrode and the second electrode, and the third electrode and the fourth electrode of the ultraviolet detection element are formed simultaneously.

Further preferably, forming the first electrode and the second electrode of the solar cell, and the third electrode and the fourth electrode of the ultraviolet detection element, includes: forming spaced forming the first sub-section of the first electrode and the second electrode, and forming the third electrode and the first sub-section of the fourth electrode; after forming the first N-type semiconductor layer and the first P-type semiconductor layer, the second N-type semiconductor layer and the second P-type semiconductor layer, a second sub-section of the second electrode is formed through a patterning process, and a second sub-section of the fourth electrode is formed; wherein the The second subsection of the second electrode is electrically coupled with the first subsection of the second electrode; the second subsection of the fourth electrode is electrically coupled with the first subsection of the fourth electrode.

The embodiments of the present invention provide an ultraviolet sensor, a preparation method thereof, and an electronic device. By integrating a solar cell in the ultraviolet sensor, the solar energy can be received and converted into electric energy to supply power to the ultraviolet detection element in the ultraviolet sensor, thereby realizing the detection of ultraviolet intensity. . When the ultraviolet sensor is used in electronic equipment, because the ultraviolet sensor has a self-power supply function, and when the solar cell converts a lot of electric energy, it can also supply power to other components of the electronic equipment, so the battery life of the electronic equipment can be improved. , thereby improving the user experience.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic diagram 1 of the arrangement of solar cells and ultraviolet detection elements in an ultraviolet sensor provided by an embodiment of the present invention;

2 is a schematic diagram 2 of the arrangement of solar cells and ultraviolet detection elements in an ultraviolet sensor provided by an embodiment of the present invention;

3 is a schematic diagram 3 of the arrangement of solar cells and ultraviolet detection elements in an ultraviolet sensor provided by an embodiment of the present invention;

4 is a schematic diagram 4 of the arrangement of solar cells and ultraviolet detection elements in an ultraviolet sensor provided by an embodiment of the present invention;

5 is a schematic diagram 5 of the arrangement of solar cells and ultraviolet detection elements in an ultraviolet sensor provided by an embodiment of the present invention;

6 is a schematic structural diagram of a solar cell and an ultraviolet detection element in an ultraviolet sensor provided by an embodiment of the present invention;

Figure 7 (a) is a schematic diagram of the connection of an ultraviolet sensor, a storage battery, a charging circuit and a controller in an electronic device provided by an embodiment of the present invention;

7(b) is a schematic diagram of the connection of an ultraviolet sensor, a storage battery, a charging circuit, a controller, and a wireless transmission module in an electronic device provided by an embodiment of the present invention;

Figure 7 (c) is a schematic diagram of the connection of an ultraviolet sensor, a storage battery, a charging circuit, a controller, and a display module in an electronic device provided by an embodiment of the present invention;

7(d) is a schematic diagram of the connection of an ultraviolet sensor, a storage battery, a charging circuit, a controller, a display module, and a wireless transmission module in an electronic device provided by an embodiment of the present invention;

8 is a schematic diagram of a wristband provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of packaging an ultraviolet sensor according to an embodiment of the present invention;

10(a)-10(c) are schematic diagrams of a process for preparing a solar cell and an ultraviolet detection element in an ultraviolet sensor according to an embodiment of the present invention.

Reference number:

1-UV sensor; 10-substrate; 20-solar cell; 201-first electrode; 202-second electrode; 2021-first subsection of second electrode; 2022-second subsection of second electrode; 203 - first N-type semiconductor layer; 204 - first P-type semiconductor layer; 30 - UV detection element; 301 - third electrode; 302 - fourth electrode; 3021 - first subsection of fourth electrode; 3022 - fourth 303-second N-type semiconductor layer; 304-second P-type semiconductor layer; 40-charging circuit; 50-battery; 60-controller; 70-wireless transmission module; 80-display module; 901-package cover; 902-metal bond wire; 903-pin.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

An embodiment of the present invention provides an ultraviolet sensor 1, as shown in FIGS. 1-5, comprising a substrate 10, at least one solar cell 20 disposed on the substrate 10, and at least one ultraviolet detection element 30; wherein, the solar cell 20 and the ultraviolet detection element 30 are insulated from each other.

Here, the length and width of the ultraviolet sensor 1 can be controlled to be less than 3 cm, for example, the ultraviolet sensor 1 can be made into a size of 1 cm×1 cm, or 1.5 cm×1.5 cm, or 2 cm×2 cm.

The solar cell 20 can convert the received solar energy into electrical energy, and the ultraviolet detection element 30 can detect the ultraviolet intensity of the external environment.

The electrical energy received by the solar cells 20 is related to its size. The more solar cells 20 are in number and the larger the size, the more solar energy they receive and the more electrical energy they convert.

The size of the ultraviolet detection element 30 does not need to be too large, as long as the ultraviolet intensity can be detected. The greater the number of ultraviolet detection elements 30, the more accurate the detected ultraviolet intensity.

Based on the above description, it should be noted that the number of the ultraviolet detection elements 30 can be reasonably set according to the required detection accuracy of the ultraviolet intensity.

On this basis, the number and size of the solar cells 20 can be reasonably set, so as to maximize the conversion of electrical energy.

Wherein, when there are multiple ultraviolet detection elements 30, each ultraviolet detection element 30 operates independently. When the solar cells 20 are plural, the plural solar cells 20 may be connected in series.

The embodiment of the present invention provides an ultraviolet sensor 1. By integrating a solar cell 20 in the ultraviolet sensor 1, it can receive solar energy and convert it into electrical energy to supply power to the ultraviolet detection element 30 in the ultraviolet sensor 1, thereby realizing the detection of ultraviolet intensity. When the ultraviolet sensor 1 is applied in an electronic device, since the ultraviolet sensor 1 has a self-power supply function, and when the electric energy converted by the solar cell 20 is large, it can also supply power to other components of the electronic device, therefore, the electronic device can be improved. battery life, thereby improving the user experience.

Preferably, as shown in FIGS. 1-5 , the ultraviolet detection element 30 is arranged in the middle of the substrate 10 .

In the embodiment of the present invention, the ultraviolet detection element 30 is arranged in the middle of the substrate 10, which can ensure that the ultraviolet detection element 30 receives solar energy to detect ultraviolet rays, and ensures the accuracy of ultraviolet intensity detection. In addition, when the ultraviolet detection element 30 is applied in an electronic device, inaccurate detection of the ultraviolet intensity due to being blocked at the corners of the electronic device can be avoided.

Further preferably, as shown in FIGS. 3-5 , there are multiple solar cells 20 ; the multiple solar cells 20 and at least one ultraviolet detection element 30 are arranged in an array.

Wherein, in order to ensure the accuracy of ultraviolet intensity detection, the number of ultraviolet detection elements 30 is preferably set to two or more, for example, four or five.

In this way, on the one hand, it is beneficial to set the ultraviolet detection element 30 in the middle position, so as to fully receive light and improve the detection accuracy.

Considering that the size of the ultraviolet detection element 30 does not need to be too large to realize the detection of ultraviolet intensity, it is preferable that the area of the ultraviolet detection element 30 is 2-8 μm ² .

For example, the size of the ultraviolet detection element 30 may be 2um×2um, or may be 3um×3um.

In this way, more area of the ultraviolet sensor 1 can be used for disposing the solar cell 20, thereby maximizing the conversion of electric energy.

Preferably, as shown in FIG. 6 , the solar cell 20 includes a first electrode 201 , a second electrode 202 and a first N-type semiconductor layer 203 and a first P-type semiconductor layer 204 located therebetween.

The ultraviolet detection element 30 includes a third electrode 301, a fourth electrode 302, and a second N-type semiconductor layer 303 and a second P-type semiconductor layer 304 located therebetween.

The structures of the solar cell 20 and the ultraviolet detection element 30 are the same.

Specifically, the first electrode 201 can be, for example, a negative electrode, and the second electrode 202 can be a positive electrode. In this case, the first N-type semiconductor layer 203 is disposed close to the first electrode 201 , and the first P-type semiconductor layer 204 is disposed close to the second electrode 202 set up. Of course, the first electrode 201 can also be the positive electrode, and the second electrode 202 can be the negative electrode.

For example, the third electrode 301 can be a negative electrode, and the fourth electrode 302 can be a positive electrode. Of course, the third electrode 301 can also be the positive electrode, and the fourth electrode 302 can be the negative electrode.

The materials of the first electrode 201, the second electrode 202, the third electrode 301 and the fourth electrode 302 may be metals, such as Al (aluminum), Cu (copper), Ag (silver), etc., or alloys, such as Mg (magnesium)-Ag alloy, etc.

Materials of the first N-type semiconductor layer 203 and the first P-type semiconductor layer 204 may be N-type single crystal silicon and P-type single crystal silicon. Materials of the second N-type semiconductor layer 303 and the second P-type semiconductor layer 304 may be N-type GaN (gallium nitride) and P-type GaN.

It should be noted that, since the arrangement of the P-type semiconductor layer and the N-type semiconductor layer in the solar cell 20 and the ultraviolet detection element 30 is constant, they are both stacked and arranged. Therefore, the structures of the solar cell 20 and the ultraviolet detection element 30 are the same, that is, Therefore, the first electrode 202 and the second electrode 202 of the solar cell 20 and the third electrode 301 and the fourth electrode of the ultraviolet detection element 30 are arranged in the same manner.

In the embodiment of the present invention, the structures of the solar cell 20 and the ultraviolet detection element 30 are set to be the same, which is simpler in manufacturing process.

Further preferably, as shown in FIG. 6 , the second electrode 202 includes a first sub-section 2021 of the second electrode and a second sub-section 2022 of the second electrode that are electrically connected; The first sub-portions 2021 of the electrodes are disposed close to the substrate 10 and spaced apart; the second sub-portions 2022 of the second electrodes are disposed away from the substrate 10 .

The fourth electrode 302 includes a first subsection 3021 of the fourth electrode and a second subsection 3022 of the fourth electrode that are electrically coupled; on this basis, the third electrode 301 and the first subsection 3021 of the fourth electrode are close to the substrate 10 and spaced apart; the second sub-portion 3022 of the fourth electrode is disposed away from the substrate 10 .

In the embodiment of the present invention, by arranging the first sub-portion 2021 of the second electrode and the first sub-portion 3021 of the fourth electrode close to the substrate 10, the leads (also referred to as bonding wires) of each electrode can be easily drawn out. Therefore, when the solar cell 20 and the ultraviolet detection element 30 are packaged, the first electrode 201 , the second electrode 202 , the third electrode 301 and the fourth electrode 302 can be connected to the pins of the chip.

An embodiment of the present invention further provides an electronic device, including a control circuit board, the control circuit board including a controller, the electronic device further including an ultraviolet sensor 1 disposed on the control circuit board, the ultraviolet sensor 1 and the controller connected. Wherein, the controller is used to control the ultraviolet detection element 30 in the ultraviolet sensor 1 to work, and when the voltage provided by the solar cell 20 is lower than the working voltage of the ultraviolet detection element 30, it controls the power supply module to supply power to the ultraviolet detection element 30.

Here, when the number of ultraviolet detection elements 30 is multiple, the multiple ultraviolet detection elements 30 can obtain different voltage signals in response to different ultraviolet intensities, and transmit them to the controller for processing to obtain ultraviolet intensity values.

It should be noted that when the voltage provided by the solar cell 20 is lower than the working voltage of the ultraviolet detection element 30 , the controller can control the power supply module to provide the insufficient amount of electricity to the ultraviolet detection element 30 .

The embodiment of the present invention provides an electronic device. By integrating the solar cell 20 in the ultraviolet sensor 1, it can receive solar energy and convert it into electric energy to supply power to the ultraviolet detection element 30 in the ultraviolet sensor 1, thereby realizing the detection of ultraviolet intensity. Among them, because the ultraviolet sensor 1 has a self-power supply function, and when the solar cell 20 converts a lot of electric energy, it can also supply power to other components of the electronic device, therefore, the battery life of the electronic device can be improved, thereby improving the user experience.

Preferably, the power supply module is a battery; in this case, the controller is further configured to supply power to the battery when the voltage provided by the solar cell 20 is greater than the working voltage of the ultraviolet detection element 30 .

Specifically, as shown in FIG. 7( a ), the control circuit board may include a charging circuit 40 , and under the control of the controller 60 , the solar cell 20 in the ultraviolet sensor 1 can supply power to the battery 50 through the charging circuit 40 . The controller 60 can be, for example, a single-chip microcomputer, and the battery 50 can supply power to the controller 60 .

Preferably, as shown in FIG. 7( b ), the electronic device further includes a wireless transmission module 70 disposed on the control circuit board for transmitting the data collected by the ultraviolet sensor 1 to an external terminal.

Specifically, when the ultraviolet detection element 30 in the ultraviolet sensor 1 detects the ultraviolet intensity to obtain a corresponding voltage signal, after AD (analog-to-digital) conversion, the controller 60 processes and obtains the ultraviolet intensity value, and the controller 60 passes the The wireless transmission module 70 transmits the obtained ultraviolet intensity value to the external terminal.

The wireless transmission module 70 may be a low-power Bluetooth module, or a low-power Wi-Fi module, or the like. The battery 50 may also supply power to the wireless transmission module 70 .

In the embodiment of the present invention, the ultraviolet intensity value collected by the ultraviolet sensor 1 and processed by the controller 60 is transmitted to the external terminal through the wireless transmission module 70, so that the user can know the ultraviolet intensity of the external environment in real time, so as to take corresponding measures accordingly. measure. In addition, the electronic device can also be connected to the Internet of Things through the wireless transmission module 70, which can provide big data analysis and intelligent analysis by accumulating more data.

Further preferably, as shown in FIGS. 7( c ) and 7 ( d ), the electronic device further includes a display module 80 for displaying the data collected by the ultraviolet sensor 1 .

Specifically, when the ultraviolet detection element 30 in the ultraviolet sensor 1 detects the ultraviolet intensity to obtain a corresponding voltage signal, after AD conversion, the controller 60 processes and obtains the ultraviolet intensity value, and the controller 60 displays the ultraviolet intensity value through the display module 80 The UV intensity value.

The battery 50 can also supply power to the display module 80 .

In the embodiment of the present invention, the display module 80 displays the ultraviolet intensity value collected by the ultraviolet sensor 1 and processed by the controller 60, so that the user can know the ultraviolet intensity of the external environment in real time, and accordingly take corresponding countermeasures.

Based on the above, the electronic device may be a smart wearable electronic device such as a brooch, a finger ring, a wristband, and a smart pendant.

Taking the wristband as an example, as shown in FIG. 8 , it may include a control circuit board and a display module 80 , the control circuit board includes a charging circuit and a single-chip microcomputer (not shown in FIG. 8 ), and a battery 50 and an ultraviolet sensor can also be provided. 1. The control circuit board can be a flexible circuit board, and on this basis, the battery 50 can also be a flexible battery.

Its working process is: when the solar cell 20 in the ultraviolet sensor 1 receives solar energy, it supplies power to the ultraviolet detection element 30 in the ultraviolet sensor 1, so that the ultraviolet detection element 30 detects the intensity of the ultraviolet rays and obtains a corresponding voltage signal. After AD conversion of the single-chip microcomputer, processing is performed to obtain an ultraviolet intensity value, which is then sent to the display module 80 to display the ultraviolet intensity value. At the same time, if the solar cell 20 has excess electric energy, the battery 50 can be supplied with power through the charging circuit.

An embodiment of the present invention also provides a method for preparing an ultraviolet sensor, including: using an IC (integrated circuit) packaging method to package at least one ultraviolet detection element 30 and at least one solar cell 20 in the same chip.

Specifically, as shown in FIG. 9 , at least one ultraviolet detection element 30 and at least one solar cell 20 are firstly formed on the substrate 10 , and then encapsulated by a packaging cover 901 . The electrodes of the ultraviolet detection element 30 and the electrodes of the solar cell 20 are connected to the pins 903 of the chip.

The embodiment of the present invention provides a preparation method of an ultraviolet sensor. By adopting an IC packaging method, a solar cell 20 is integrated in the ultraviolet sensor 1, which can receive solar energy and convert it into electric energy to supply power to the ultraviolet detection element 30 in the ultraviolet sensor 1, thereby realizing Detection of UV intensity. When the ultraviolet sensor 1 is applied in an electronic device, since the ultraviolet sensor 1 has a self-power supply function, and when the electric energy converted by the solar cell 20 is large, it can also supply power to other components of the electronic device, therefore, the electronic device can be improved. battery life, thereby improving the user experience.

Preferably, as shown in FIG. 6 , forming the solar cell 20 includes: forming a first electrode 201 , a second electrode 202 and a first N-type semiconductor layer 203 and a first electrode between them on the substrate 10 through a patterning process P-type semiconductor layer 204 .

Forming the ultraviolet detection element 30 includes: forming a third electrode 301 , a fourth electrode 302 and a second N-type semiconductor layer 303 and a second P-type semiconductor layer 304 on the substrate 10 through a patterning process.

The first electrode 201 and the second electrode 202 of the solar cell 20 and the third electrode 301 and the fourth electrode 302 of the ultraviolet detection element 30 are formed simultaneously.

Here, the first electrode 201 can be, for example, a negative electrode, and the second electrode 202 can be a positive electrode. In this case, the first N-type semiconductor layer 203 is formed close to the first electrode 201 , and the first P-type semiconductor layer 204 is formed close to the second electrode 202 form. Of course, the first electrode 201 can also be the positive electrode, and the second electrode 202 can be the negative electrode.

For example, the third electrode 301 can be a negative electrode, and the fourth electrode 302 can be a positive electrode. Of course, the third electrode 301 can also be the positive electrode, and the fourth electrode 302 can be the negative electrode.

The materials of the first electrode 201, the second electrode 202, the third electrode 301 and the fourth electrode 302 may be metals, such as Al (aluminum), Cu (copper), Ag (silver), etc., or alloys, such as Mg (magnesium)-Ag alloy, etc.

Materials of the first N-type semiconductor layer 203 and the first P-type semiconductor layer 204 may be N-type single crystal silicon and P-type single crystal silicon. Materials of the second N-type semiconductor layer 303 and the second P-type semiconductor layer 304 may be N-type GaN and P-type GaN.

In the embodiment of the present invention, the first electrode 201 and the second electrode 202 of the solar cell 20 and the third electrode 301 and the fourth electrode 302 of the ultraviolet detection element 30 are formed simultaneously, which is simpler in fabrication.

A specific embodiment is provided below to describe in detail a preparation method of an ultraviolet sensor, comprising the following steps:

S10. As shown in FIG. 10( a ), the first electrode 201 and the first sub-portion 2021 of the second electrode are formed at intervals on the substrate 10 through a patterning process, and the third electrode 301 and the first sub-portion of the fourth electrode are formed. Subsection 3021.

Among them, the substrate 10 can be a ceramic substrate, a glass substrate, or the like.

S11. As shown in FIG. 10(b), a PN junction structure of single crystal silicon is formed between the first electrode 201 and the first sub-portion 2021 of the second electrode, and a PN junction structure of the third electrode 301 and the first sub-portion of the fourth electrode is formed. A PN junction structure of GaN is formed between the parts 3021 .

The PN junction structure of single crystal silicon is in contact with the first electrode 201 and not in contact with the first sub-section 2021 of the second electrode; the PN junction structure of GaN is in contact with the third electrode 301 and is in contact with the first sub-section of the fourth electrode 3021 does not touch.

The PN junction structure of single crystal silicon includes a first N-type semiconductor layer 203 and a first P-type semiconductor layer 204 ; the PN junction structure of GaN includes a second N-type semiconductor layer 303 and a second P-type semiconductor layer 304 .

S12 , as shown in FIG. 10( c ), an insulating layer is formed, and the insulating layer includes via holes exposing the first sub-portion 2021 of the second electrode and the first sub-portion 3021 of the fourth electrode.

S13. Referring to FIG. 6, the second sub-section 2022 of the second electrode is formed by one patterning process, and the second sub-section 3022 of the fourth electrode is formed.

The second sub-portion 2022 of the second electrode is electrically connected to the first sub-portion 2021 of the second electrode through the via hole in S12; the second sub-portion 3022 of the fourth electrode is electrically connected to the The first subsection 3021 is electrically coupled.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (11)

1. an ultraviolet sensor, is characterized in that, comprises substrate, at least one solar cell arranged on described substrate, and at least one ultraviolet detection element; Wherein, the solar cell and the ultraviolet detection element are insulated from each other; The solar cell includes a first electrode, a second electrode, and a first N-type semiconductor layer and a first P-type semiconductor layer located therebetween; The ultraviolet detection element includes a third electrode, a fourth electrode, and a second N-type semiconductor layer and a second P-type semiconductor layer located therebetween; The solar cell and the ultraviolet detection element have the same structure; The ultraviolet detection element is arranged in the middle of the substrate. 2. The ultraviolet sensor according to claim 1, wherein the solar cells are plural; A plurality of the solar cells and at least one of the ultraviolet detection elements are arranged in an array. 3 . The ultraviolet sensor according to claim 1 , wherein the area of the ultraviolet detection element is 2-8 μm ² . 4 . 4. The ultraviolet sensor of claim 1, wherein the second electrode comprises a first subsection of the second electrode and a second subsection of the second electrode that are electrically coupled; The first sub-portions of the first electrode and the second electrode are disposed close to the substrate and spaced apart; the second sub-portions of the second electrode are disposed away from the substrate; the fourth electrode includes a first subsection of the fourth electrode and a second subsection of the fourth electrode that are electrically coupled; The first sub-portions of the third electrode and the fourth electrode are disposed close to the substrate and spaced apart; the second sub-portions of the fourth electrode are disposed away from the substrate. 5. An electronic device, comprising a control circuit board, wherein the control circuit board comprises a controller, and further comprising the ultraviolet sensor according to any one of claims 1-4 arranged on the control circuit board, the ultraviolet sensor is connected with the controller; Wherein, the controller is used to control the operation of the ultraviolet detection element in the ultraviolet sensor, and control the power supply module to supply power to the ultraviolet detection element when the voltage provided by the solar cell is lower than the working voltage of the ultraviolet detection element. 6. The electronic device according to claim 5, wherein the power supply module is a battery; The controller is further configured to supply power to the battery when the voltage provided by the solar cell is greater than the working voltage of the ultraviolet detection element. 7 . The electronic device according to claim 5 , wherein the electronic device further comprises a wireless transmission module arranged on the control circuit board, for transmitting the data collected by the ultraviolet sensor to an external terminal. 8 . . 8 . The electronic device according to claim 5 , wherein the electronic device further comprises a display module for displaying the data collected by the ultraviolet sensor. 9 . 9 . The electronic device according to claim 6 , wherein the electronic device further comprises a display module for displaying data collected by the ultraviolet sensor. 10 . 10. A method for preparing an ultraviolet sensor, comprising: encapsulating at least one ultraviolet detection element and at least one solar cell in the same chip by using an IC packaging method; The forming of the solar cell includes: forming a first electrode, a second electrode, and a first N-type semiconductor layer and a first P-type semiconductor layer on the substrate through a patterning process; Forming the ultraviolet detection element includes: forming a third electrode, a fourth electrode, and a second N-type semiconductor layer and a second P-type semiconductor layer on the substrate through a patterning process; Wherein, the first electrode and the second electrode of the solar cell, and the third electrode and the fourth electrode of the ultraviolet detection element are formed synchronously. 11. The preparation method according to claim 10, wherein the first electrode and the second electrode of the solar cell, and the third electrode and the first electrode of the ultraviolet detection element are formed. Four electrodes, including: forming spaced first sub-portions of the first electrode and the second electrode by one patterning process, and forming the third electrode and the first sub-portion of the fourth electrode; After forming the first N-type semiconductor layer and the first P-type semiconductor layer, the second N-type semiconductor layer and the second P-type semiconductor layer, the second electrode of the second electrode is formed through a patterning process a subsection and form a second subsection of the fourth electrode; Wherein, the second sub-section of the second electrode and the first sub-section of the second electrode are electrically connected; the second sub-section of the fourth electrode and the first sub-section of the fourth electrode are electrically connected.