Electronic device

Abstract

The utility model provides electronic equipment, and relates to the technical field of electronic equipment. The electronic equipment comprises a shell, and a circuit board, a light-emitting assembly and a photoelectric sensing assembly which are arranged in the shell, the shell is provided with a first light-transmitting area and a second light-transmitting area; the light-emitting component and the photoelectric sensing component are arranged on the circuit board; the light-emitting assembly comprises at least one light-emitting part, and the light-emitting part comprises a packaging structure and a light-emitting device located in the packaging structure. The packaging structure comprises a light emitting part opposite to the first light transmitting area and a light reflecting part surrounding the light emitting part; the photoelectric sensing assembly and the second light-transmitting area are oppositely arranged. According to the invention, the detection accuracy of biological indexes can be improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic devices, and in particular, to an electronic device. BACKGROUND

[0002] Wearable sports watches, sports bands and other products are mainly for sports health, and can measure biological indicators of users, such as heart rate and blood oxygen measurement. Heart rate measurement and blood oxygen measurement are both based on Photo Plethysmo Graphy (PPG) technology, and the light emission rate of the electronic device in the PPG technology is crucial to the accuracy of functions such as heart rate measurement and blood oxygen measurement. However, the accuracy of biological indicator detection in existing products needs to be improved.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] The present disclosure provides an electronic device, which can improve the accuracy of detecting biological indicators.

[0005] According to one aspect of the present disclosure, an electronic device is provided, comprising a housing, and a circuit board, a light emitting assembly and a photoelectric sensing assembly arranged in the housing;

[0006] The housing has a first light transmission area and a second light transmission area; the light emitting assembly and the photoelectric sensing assembly are both arranged on the circuit board; the light emitting assembly comprises at least one light emitting piece, the light emitting piece comprises a packaging structure and a light emitting device located in the packaging structure; the packaging structure comprises a light emitting portion opposite to the first light transmission area and a light reflecting portion surrounding the light emitting portion; the photoelectric sensing assembly is arranged opposite to the second light transmission area.

[0007] In an embodiment of the present disclosure, the packaging structure comprises a bottom plate, a side plate and a top plate; wherein the side plate is arranged around the circumference of the bottom plate; the top plate is arranged at one end of the side plate away from the bottom plate and is arranged towards the first light transmission area; the bottom plate, the side plate and the top plate enclose a closed packaging cavity, and the light emitting device is arranged on the bottom plate and located in the packaging cavity.

[0008] In an embodiment of the present disclosure, the electronic device further comprises a barrier wall, which is arranged in the housing and on the circuit board, surrounds the light emitting assembly, and is a light absorbing structure.

[0009] In an embodiment of the present disclosure, the thickness of the baffle wall is greater than the thickness of the packaging structure, and the thickness of the baffle wall is greater than the thickness of the photoelectric sensing assembly.

[0010] In an embodiment of the present disclosure, the thickness of the packaging structure is greater than half of the thickness of the baffle wall.

[0011] In an embodiment of the present disclosure, the packaging structure has a light reflection layer and a packaging body layer distributed in a direction away from the light emitting device.

[0012] Alternatively, the packaging structure has a packaging body layer and a light reflection layer distributed in a direction away from the light emitting device.

[0013] In an embodiment of the present disclosure, the electronic device further comprises a baffle wall arranged in the housing and on the circuit board, the baffle wall is arranged around the light emitting assembly, and the baffle wall is a light reflection structure.

[0014] In an embodiment of the present disclosure, the baffle wall covers at least the first light transmission area in the projection of the circuit board.

[0015] In an embodiment of the present disclosure, one end of the packaging structure away from the circuit board is connected to the housing.

[0016] In an embodiment of the present disclosure, the housing is provided with a first lens at the first light transmission area.

[0017] In an embodiment of the present disclosure, the housing is provided with a second lens at the second light transmission area.

[0018] In this way, in the packaging structure, the light beam generated by the light emitting device is totally reflected on the light reflection part, so that the light beam is concentrated and emitted from the light emitting part, reducing the loss of the light beam in the packaging structure and on the black baffle wall, increasing the light beam density emitted from the light emitting part, which is beneficial to increase the light beam density emitted from the first light transmission area, and when measuring biological indicators such as blood oxygen and heart rate, more light beams can be irradiated to the user's arm, improving the light emission rate of the light emitting device and the electronic device, and further improving the measurement accuracy of the electronic device for detecting biological indicators.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure. It is to be understood that the drawings are only schematic, and that they do not necessarily represent a limiting

[0021] Figure 1 A schematic view of an electronic device in an embodiment of the present disclosure.

[0022] Figure 2 A schematic view of a light emitting assembly in an embodiment of the present disclosure.

[0023] Figure 3 A schematic view of an electronic device in an embodiment of the present disclosure.

[0024] Explanation of Reference Numerals:

[0025] 1, housing; 11, first light transmission region; 12, second light transmission region; 2, circuit board; 3, light emitting assembly; 31, light emitting device; 311, chassis; 312, chip; 32, packaging structure; 4, photoelectric sensing assembly; 5, barrier wall; 6, first lens; 7, second lens. DETAILED DESCRIPTION

[0026] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided as non-limiting examples so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will not be repeated. In addition, the drawings are only schematic and the dimensions are not necessarily to scale.

[0027] The terms "one", "a", "an", "said", and "the" are used to indicate the existence of one or more than one element / component / etc.; the terms "including" and "having" are used as synonymous and refer to an open-ended inclusion of the elements / components / etc. listed after such terms; the terms "first", "second", and "third", etc. are used only as labels, and do not limit the number of elements to which they refer.

[0028] The "thickness" of the feature A described herein is the dimension of the feature A in the direction perpendicular to the plane on which the circuit board lies, in other words, the "thickness" of the feature A is the distance between the side of the feature A away from the circuit board and the circuit board. For example, the thickness of the packaging structure refers to the dimension of the packaging structure in the direction perpendicular to the plane on which the circuit board lies, and also refers to the distance from the side of the packaging structure away from the circuit board to the circuit board.

[0029] The electronic device can be a wearable sports watch, a wearable sports bracelet, or the like.

[0030] Referring to Figure 1 The electronic device can include a housing 1, a circuit board 2, a light-emitting assembly 3, and a photoelectric sensing assembly 4, the circuit board 2, the light-emitting assembly 3, and the photoelectric sensing assembly 4 being disposed in the housing 1. The electronic device realizes the detection of biological indicators such as heart rate and blood oxygen of a user through PPG technology. The principle of the PPG technology is that when the light beam generated by the light-emitting assembly 3 is emitted from the housing 1 and irradiates the skin surface, the contraction and expansion of blood vessels caused by each heartbeat will cause the light beam to be transmitted or reflected, the reflected light beam is captured by the photoelectric sensing assembly 4 and converted into an electrical signal, and through the algorithm of the circuit board 2 or the chip, the pulse data is processed and displayed, thereby realizing the functions of heart rate measurement and blood oxygen measurement.

[0031] The electronic device further includes a display panel (not shown in the figure) and a wristband assembly (not shown in the figure), both of which are disposed on the housing 1.

[0032] The display panel can be a light-emitting diode (LED) display panel, an organic light-emitting diode (OLED) display panel, a quantum dot light-emitting diode (QLED) display panel, or other types of display panels, so as to display data such as time, date, blood oxygen value, heart rate value, and the like from the display panel under the driving of the circuit board 2.

[0033] The wristband assembly is used to bind the electronic device to the wrist of a user, thereby realizing the wearability of the electronic device. For example, the wristband assembly can include two wristbands, which are respectively connected to the two sides of the housing 1 and can be detachably connected to each other, so as to bind the electronic device to the wrist of a user.

[0034] For wearable electronic devices, in order to meet the appearance design requirements and make the shell 1 better contact with the arm skin, a boss structure is added on the shell 1. This boss structure increases the distance between the light emitting assembly 3 and the arm, which causes the light beam irradiated to the user's arm to be greatly reduced (for example, the light beam irradiated to the black barrier wall is absorbed by the black barrier wall), affecting the measurement accuracy of detecting biological indicators.

[0035] Referring to Figure 1 , the shell 1 has a first light transmission area 11 and a second light transmission area 12. The light emitting assembly 3 and the photoelectric sensing assembly 4 are both arranged on the circuit board 2; the light emitting assembly 3 includes at least one light emitting piece, and the light emitting piece includes a packaging structure 32 and a light emitting device 31 located in the packaging structure 32. Wherein, the packaging structure 32 includes a light emitting portion opposite to the first light transmission area 11 and a light reflecting portion surrounding the light emitting portion; the photoelectric sensing assembly 4 is arranged opposite to the second light transmission area 12. In other words, the first light transmission area 11 in the orthographic projection of the circuit board 2 at least covers the orthographic projection of the packaging structure 32 on the circuit board 2; the orthographic projection of the photoelectric sensing assembly 4 on the circuit board 2 is located in the orthographic projection of the second light transmission area 12 on the circuit board 2.

[0036] In this way, when the light beam generated by the light emitting device 31 irradiates to the light reflecting portion, the light reflecting portion can fully reflect the light beam in the packaging structure 32 until the light beam is emitted from the light emitting portion. The light beam emitted from the light emitting portion finally exits from the first light transmission area 11 and enters the arm blood vessels, the light beam reflected by the blood vessels is emitted from the second light transmission area 12 into the shell 1, and is captured by the photoelectric sensing assembly 4 and converted into an electrical signal. The electrical signal is converted into the values of the user's blood oxygen and heart rate by the algorithm of the circuit board 2, and finally displayed on the display panel. Since in the packaging structure 32, the light beam generated by the light emitting device 31 is fully reflected on the light reflecting portion, so that the light beam is gathered to be emitted from the light emitting portion, the loss of the light beam in the packaging structure 32 and on the black barrier wall is reduced, the density of the light beam emitted from the light emitting portion is increased, which is beneficial to increase the density of the light beam emitted from the first light transmission area 11. When measuring the blood oxygen and heart rate, more light beams can irradiate to the user's arm, the light emitting rate of the light emitting device 31 and the electronic device is improved, and thus the measurement accuracy of the electronic device for detecting biological indicators is improved.

[0037] In an embodiment of the present disclosure, the light emitting device 31 can be a red light emitting LED, a green light emitting LED, or other color light emitting LED or other type of light emitting device 31.

[0038] In an embodiment of the present disclosure, the number of light emitting pieces can be one, two, three, etc. In this way, the density of the light beam emitted from the first light transmission area 11 can be further increased.

[0039] In an embodiment of the present disclosure, referring to Figure 2The light emitting component includes a light emitting device 31 and a packaging structure 32, and the light emitting device 31 is a LED. The LED includes a base plate 311 and three chips 312, the three chips 312 are electrically connected to each other and arranged on the base plate 311, the three chips 312 are distributed in a triangular shape, and the three chips 312 are coated with fluorescent powder to realize the light emitting function of the LED.

[0040] In an embodiment of the present disclosure, the photoelectric sensing component 4 can be an optical sensor. For example, the photoelectric sensing component 4 can be a photodiode (PD).

[0041] In an embodiment of the present disclosure, the packaging structure 32 includes a bottom plate, a side plate and a top plate. The bottom plate is connected to the circuit board 2, and the side plate is arranged around the periphery of the bottom plate. The top plate is arranged at an end of the side plate away from the bottom plate and faces the first light transmission area 11. The bottom plate, the side plate and the top plate form a closed packaging cavity, the light emitting device 31 is arranged on the bottom plate and located in the packaging cavity, the light reflecting part is arranged on the side plate, and the light emitting part is arranged on the top plate. In this way, the packaging structure 32 is formed by the bottom plate, the side plate and the top plate. On the one hand, the light emitting device 31 is packaged to protect the light emitting device 31 from water and oxygen, thereby prolonging the service life of the light emitting device 31. On the other hand, the light reflecting part is arranged on the side plate, which can improve the light emitting rate of the top plate and is beneficial to improve the light emitting rate of the light emitting device 31.

[0042] In an embodiment of the present disclosure, the shape of the packaging structure 32 can be a cube, a cylinder or other space shape.

[0043] In an embodiment of the present disclosure, referring to Figure 1 The electronic device further includes a barrier wall 5. The barrier wall 5 is arranged in the shell 1 and located on the circuit board 2. The barrier wall 5 surrounds the light emitting component 3, and the barrier wall 5 is a light absorbing structure. In this way, the barrier wall 5 is arranged around the light emitting component 3 to separate the light emitting component 3 and the photoelectric sensing component 4, thereby reducing the probability that the light beam generated by the light emitting component 3 directly irradiates on the photoelectric sensing component 4, so that the photoelectric sensing component 4 is not disturbed, and the measurement accuracy of the electronic device for detecting biological indicators is improved.

[0044] In an embodiment of the present disclosure, the shape of the barrier wall 5 can be a cube, a cylinder or other space shape according to actual needs, which is not limited herein.

[0045] In an embodiment of the present disclosure, referring to Figure 1The thickness of the blocking wall 5 is greater than the thickness of the packaging structure 32, and the thickness of the blocking wall 5 is greater than the thickness of the photoelectric sensing component 4. In this way, the blocking wall 5 can serve as an effective barrier between the packaging structure 32 and the photoelectric sensing component 4, so as to reduce the possibility that the light beam emitted from the light emitting device 31 is directly captured by the photoelectric sensing component 4, and improve the measurement accuracy of the photoelectric sensing component 4.

[0046] In an embodiment of the present disclosure, referring to Figure 1 The thickness of the packaging structure 32 is greater than half of the thickness of the blocking wall 5. For example, the thickness of the packaging structure 32 can be 2 / 3, 3 / 4, 4 / 5, etc. of the thickness of the blocking wall 5. On the one hand, since the packaging structure 32 is provided with the light reflection part, increasing the thickness of the packaging structure 32 increases the thickness of the light reflection part, thereby reducing the distance between the first light transmission area 11 and the light emitting part, so as to further improve the light emitting rate of the light beam generated by the light emitting device 31. On the other hand, by matching the size relationship between the thickness of the packaging structure 32 and the thickness of the blocking wall 5, the possibility that the light beam generated by the light emitting device 31 is directly captured by the photoelectric sensing component 4 can be further reduced.

[0047] In an embodiment of the present disclosure, the packaging structure 32 has a light reflection layer and a packaging body layer distributed in a direction away from the light emitting device 31. In this way, the light reflection layer is arranged on the inner wall of the packaging structure 32 to realize the total reflection function of the peripheral side of the packaging structure 32.

[0048] In an embodiment of the present disclosure, the packaging structure 32 has a light reflection layer and a packaging body layer distributed in a direction away from the light emitting device 31. In this way, the light reflection layer is arranged on the inner wall of the packaging structure 32 to realize the total reflection function of the peripheral side of the packaging structure 32.

[0049] In an embodiment of the present disclosure, the light reflection layer can be a light reflection coating or a light reflection film. The light reflection coating can be an aluminum layer, a silver layer or a light reflection white paint.

[0050] In an embodiment of the present disclosure, the blocking wall 5 is a light reflection structure. The blocking wall 5 can be provided with a light reflection coating or a light reflection film, so as to reflect the light beam generated by the light emitting device 31 to the first light transmission area 11 through the blocking wall 5, thereby improving the light emitting rate of the light emitting device 31.

[0051] In an embodiment of the present disclosure, referring to Figure 1 The blocking wall 5 covers at least the orthographic projection of the first light transmission area 11 on the circuit board 2. In this way, the light beam incident from the outside through the first light transmission area 11 can be reflected or absorbed by the blocking wall 5, thereby preventing the light beam incident from the outside through the first light transmission area 11 from being captured by the photoelectric sensing component 4, so as to reduce the interference on the photoelectric sensing component 4.

[0052] In an embodiment of the present disclosure, referring toFigure 3 In this embodiment, the end of the encapsulation structure 32 away from the circuit board 2 is bonded to the housing 1, and the other end is soldered to the circuit board 2. The electronic device may not require a barrier wall 5, and the projection of the first light-transmitting area 11 onto the circuit board 2 is within the projection of the encapsulation structure 32 onto the circuit board 2. On one hand, the encapsulation structure 32 can replace the barrier wall 5 to achieve a barrier between the light-emitting device 31 and the photoelectric sensing component 4, reducing production costs. On the other hand, by connecting the encapsulation structure 32 to the housing 1, the distance between the light-emitting part and the first light-transmitting area 11 can be further reduced, thereby further improving the light emission rate of the light-emitting device 31 and further improving the measurement accuracy of the electronic device for detecting biological indicators. In other embodiments of this disclosure, the end of the encapsulation structure 32 away from the circuit board 2 is bonded to the housing 1, and the other end is soldered to the circuit board 2. The electronic device may also have a barrier wall 5. Thus, the barrier wall 5 provides a secondary separation between the light-emitting device 31 and the photoelectric sensing component 4, increasing structural stability and improving the reliability of the electronic device.

[0053] In one embodiment of this disclosure, see Figure 1 The housing 1 has a first lens 6 provided in the first light-transmitting area 11. The first lens 6 can be connected to the housing 1 by snap-fit, and the orthographic projection of the first lens 6 onto the circuit board 2 at least covers the orthographic projection of the light-emitting device 31 onto the circuit board 2. On the one hand, the first lens 6 can focus the light beam generated by the light-emitting device 31, so that the light beam illuminating the user's arm is not too scattered; on the other hand, the first lens 6 can protect the encapsulation structure 32 inside the housing 1, reduce the possibility of external debris entering the housing 1, and improve the service life of the electronic device.

[0054] In one embodiment of this disclosure, see Figure 1 The housing 1 has a second lens 7 installed in the second light-transmitting area 12. The second lens 7 can be connected to the housing 1 by a snap-fit ​​mechanism, and the orthographic projection of the second lens 7 onto the circuit board 2 at least covers the orthographic projection of the photoelectric sensing component 4 onto the circuit board 2. This arrangement serves two purposes: firstly, the second lens 7 can focus the light beam reflected by the blood vessel into the cavity of the housing 1, allowing the light beam to be captured by the photoelectric sensing component 4 as much as possible, thereby improving the measurement accuracy of the photoelectric sensing component 4; secondly, the second lens 7 can protect the photoelectric sensing component 4 inside the housing 1, reducing the possibility of external debris entering the housing 1 and improving the service life of the electronic device.

[0055] In one embodiment of this disclosure, both the first lens 6 and the second lens 7 are convex lenses, which can converge light and improve the utilization rate of light.

[0056] The following is a detailed description of the usage method and working principle of the electronic device according to the present disclosure:

[0057] In the process of measuring blood oxygen and heart rate by using the electronic device, the electronic device is first bound to the wrist by the wristband assembly; secondly, the touch display panel is touched to use the blood oxygen and heart rate measurement function of the electronic device; after the measurement by the electronic device, the measurement data of blood oxygen and heart rate are displayed on the display panel for the user to refer.

[0058] In the process of measuring blood oxygen and heart rate by the electronic device, the light beam generated by the light emitting device 31 (for example, 180° green light or red light) is totally reflected by the reflecting part in the packaging cavity of the packaging structure 32, and then is emitted through the light emitting part of the packaging structure 32, and then enters the blood vessels of the user's wrist through the first lens 6 of the first light transmission area 11, a part of the light beam is absorbed by the blood vessels while another part of the light beam is reflected, the reflected light beam is condensed by the second lens 7 of the second light transmission area 12, and then is irradiated to the photoelectric sensing assembly 4, and finally is captured by the photoelectric sensing assembly 4 and converted into an electrical signal, and then the electrical signal is transmitted to the circuit board 2, the circuit board 2 processes the electrical signal by using an algorithm, and converts the electrical signal into corresponding blood oxygen and heart rate data, and finally displays the data on the display panel, thus the electronic device completes the measurement of blood oxygen and heart rate.

[0059] Among them, the light beam that is not emitted from the first lens 6 may be blocked by the blocking wall 5 to prevent the light beam generated by the light emitting device 31 from being captured by the photoelectric sensing assembly 4 and affecting the accuracy of the measurement.

[0060] Since the reflecting part is arranged on the packaging structure 32, the light beam generated by the light emitting device 31 can only be emitted through the light emitting part, compared with the packaging structure 32 that transmits light in the related art, this arrangement can increase the light emitting rate of the light emitting device 31, which is conducive to improving the measurement accuracy of the electronic device for detecting biological indicators.

[0061] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptive changes of the disclosure that follow the general principles of the disclosure and include common knowledge or conventional technical means in the art not disclosed in the disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the disclosure are indicated by the appended claims.

Claims

1. An electronic device, comprising: The electronic device comprises a shell, a circuit board, a light-emitting assembly and a photoelectric sensing assembly arranged in the shell; The shell has a first light-transmitting area and a second light-transmitting area; the light-emitting assembly and the photoelectric sensing assembly are arranged on the circuit board; the light-emitting assembly comprises at least one light-emitting piece, the light-emitting piece comprises a packaging structure and a light-emitting device arranged in the packaging structure; the packaging structure comprises a light-emitting part opposite to the first light-transmitting area and a light-reflecting part surrounding the light-emitting part; the photoelectric sensing assembly is arranged opposite to the second light-transmitting area.

2. The electronic device of claim 1, wherein, The packaging structure comprises a bottom plate, a side plate and a top plate; the side plate is arranged around the periphery of the bottom plate; the top plate is arranged at an end of the side plate away from the bottom plate and faces the first light-transmitting area; the bottom plate, the side plate and the top plate form a closed packaging cavity, and the light-emitting device is arranged on the bottom plate and in the packaging cavity.

3. The electronic device of claim 1, wherein, The electronic device further comprises a barrier wall arranged in the shell and on the circuit board, the barrier wall surrounds the light-emitting assembly, and the barrier wall is a light-absorbing structure.

4. The electronic device of claim 3, wherein, The thickness of the barrier wall is greater than the thickness of the packaging structure, and the thickness of the barrier wall is greater than the thickness of the photoelectric sensing assembly.

5. The electronic device of claim 4, wherein, The thickness of the packaging structure is greater than half of the thickness of the barrier wall.

6. The electronic device of claim 1, wherein, The packaging structure has a light-reflecting layer and a packaging body layer distributed in a direction away from the light-emitting device. Alternatively, the packaging structure has a packaging body layer and a light-reflecting layer distributed in a direction away from the light-emitting device.

7. The electronic device of claim 1, wherein, The electronic device further comprises a barrier wall arranged in the shell and on the circuit board, the barrier wall surrounds the light-emitting assembly, and the barrier wall is a light-absorbing structure.

8. The electronic device of claim 3, wherein, The barrier wall covers at least the first light-transmitting area in the orthographic projection of the circuit board.

9. The electronic device of claim 1, wherein, An end of the packaging structure away from the circuit board is connected to the shell.

10. The electronic device according to any one of claims 1 to 9, characterized by The shell is provided with a first lens at the first light-transmitting area.

11. The electronic device according to any one of claims 1 to 9, characterized by The shell is provided with a second lens at the second light-transmitting area.

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