Smart ring device including sensor

Abstract

Disclosed is a smart ring device comprising: an outer structure; an inner structure disposed inside the outer structure; a printed circuit board disposed between the outer structure and the inner structure; and a first protruding structure that protrudes from one surface of an inner portion of the inner structure toward the center. The printed circuit board includes: a first light-receiving element that is disposed at a first position of the outer structure; and a first type of first light-emitting element that is disposed at a second position of the outer structure and transmits a first signal of a first frequency band. The first protruding structure includes: a first portion protruding in a first direction from the first light-emitting element toward the center; and a second portion connected to the first portion and protruding in a second direction from the first light-receiving element toward the center.

Description

Smart ring device containing a sensor

[0001] Embodiments of the present invention relate to a smart ring device having a structure capable of more precisely collecting sensor signals related to a living body using a sensor.

[0002] A wearable electronic device is an electronic device designed to be worn on a specific part of the user's body. Because these wearable electronic devices are worn directly on the body, they are relatively small compared to other electronic devices and can have different shapes depending on the location where they are worn. When worn on the user's body, the wearable electronic device can collect sensor signals related to the user's body by performing sensing functions. In this regard, the wearable electronic device can have a sensor placed on a part facing the user's body. The sensor can irradiate a designated signal and collect a signal reflected after passing through the user's body. The wearable electronic device can be configured to perform designated processing on the signal collected by the sensor.

[0003] The above information may be provided as background information to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art in connection with the present disclosure.

[0004] A smart ring device according to at least one embodiment of the present disclosure comprises an outer structure (or an outer ring portion, an outer ring, an outer portion of a ring) in a ring shape, an inner structure (or an inner ring portion, an inner ring, an inner portion of a ring) disposed on the inner side of the outer structure, a printed circuit board disposed between the outer structure and the inner structure, a first protruding structure (or a protruding portion, a protruding portion) protruding from one surface of the inner side of the inner structure toward the center of the smart ring device, the printed circuit board comprising a first light-receiving element (e.g., a first light-receiving element including a light-receiving circuit) disposed at a first position of the outer structure, a first type of first light-emitting element (e.g., a first light-emitting element including a light-emitting circuit) disposed at a second position of the outer structure and transmitting a first signal of a first frequency band, and the first protruding structure comprises a first portion protruding from the first light-emitting element in a first direction facing the center of the smart ring device, and is connected to the first portion, and the first light-receiving element It is characterized in that it includes a second portion protruding in a second direction facing the center of the smart ring device in the element.

[0005] A smart ring device according to at least one embodiment of the present disclosure includes a ring-shaped outer structure (or outer ring portion, outer ring, outer portion of the ring) and an inner structure (or inner ring portion, inner ring, inner portion of the ring), a printed circuit board having at least a portion disposed between the outer structure and the inner structure, a first protruding structure (or protruding portion, protruding portion) protruding from one surface of the inner portion of the inner structure toward the center of the ring, and the first protruding structure has a first portion and a second portion disposed to cover a first light-receiving element (or a light-receiving element including a light-receiving circuit) and a first type of first light-emitting element (or a light-emitting element including a light-emitting circuit) disposed on the printed circuit board.

[0006] In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

[0007] FIG. 1 is a drawing showing an example of the appearance of a smart ring device according to one embodiment.

[0008] FIG. 2 is a drawing showing an example of the internal structure of a smart ring device according to one embodiment.

[0009] FIG. 3 is a drawing showing an example of an outer structure and some internal elements of a smart ring device according to one embodiment.

[0010] FIG. 4 is a drawing showing an example of a combined state of an outer structure and inner elements of a smart ring device according to one embodiment observed from a first direction.

[0011] FIG. 5 is a drawing showing an example of a combined state of an outer structure and inner elements of a smart ring device according to one embodiment observed from a second direction.

[0012] FIG. 6 is a drawing showing an example of the appearance of a first type smart ring device according to one embodiment.

[0013] FIG. 7 is a drawing showing an example of the structure of a first type protruding structure according to one embodiment.

[0014] FIG. 8 is a drawing showing an example of the appearance of a second type smart ring device according to one embodiment.

[0015] FIG. 9 is a drawing showing an example of the structure of a second type protruding structure according to one embodiment.

[0016] FIG. 10 is a drawing showing an example of the structure of a third type protruding structure according to one embodiment.

[0017] FIG. 11 is a drawing showing an example of the structure of a fourth type protruding structure according to one embodiment.

[0018] FIG. 12 is a drawing showing an example of a third type smart ring device according to one embodiment.

[0019] FIG. 13 is a block diagram of at least a portion of a configuration of a smart ring device according to one embodiment.

[0020] Hereinafter, various embodiments of this document may be described with reference to the attached drawings.

[0021] One embodiment of the present disclosure described below relates to a smart ring device having a structure that can be worn on a body part protruding from a body, such as a user's finger (e.g., at least one of a finger, a toe, a wrist, and an ankle, and a finger will be described as an example hereinafter). The smart ring device may have a sensor unit including at least one sensor. The smart ring device of the present disclosure may provide a structure that can reduce noise inflow in relation to the operation of the at least one sensor and more precisely collect a user's bio-related sensor signal. For example, the finger of a user wearing the smart ring device may have different characteristics (e.g., shape, thickness, skin elasticity) depending on the person. In addition, the characteristics of the user's finger may change depending on physical activity. Considering these circumstances, the smart ring device of the present disclosure may provide a stable state of contact with the user's finger by utilizing at least one protruding structure (e.g., a protruding portion, a protruding part) disposed on an inner structure (e.g., an inner portion, an inner curved surface, or an inner bottom surface of the inner structure).

[0022] According to one embodiment of the present disclosure, the smart ring device of the present disclosure may be configured to collect a plurality of signals related to a user's body. For example, the smart ring device of the present disclosure may include a first type light-emitting element (or a first type emitter, a first type signal emitting module, a first type signal irradiation module, a first type signal radiator, a first type signal irradiation device, a first type light irradiation device, a green color wavelength band light emitting element) related to signal collection of a first frequency band among a plurality of sensor signals, a second type light-emitting element (or a second type emitter, a second type signal irradiation module, a second type signal irradiation module, a second type signal irradiation device, a second type signal irradiation device, a red color or infra-red wavelength band light emitting element) related to signal collection of a second frequency band among a plurality of sensor signals, and a light-receiving element (or a receiver, a signal collection module, a signal collection device). The above light-receiving element may be configured to collect light reflected after irradiation by the first type light-emitting element or light reflected after irradiation by the second type light-emitting element, respectively, in relation to selective operation of the smart ring device.

[0023] According to one embodiment, the smart ring device of the present disclosure includes a protruding structure arranged to cover a first type light-emitting element and a light-receiving element together, and when a user's finger is inserted into the smart ring device, the protruding structure comes into close contact with the user's finger skin, so that at least a portion of a signal irradiated from the first type light-emitting element can be irradiated to the finger skin (or the inside of the finger) without passing through an air gap, and the light-receiving element can collect a signal reflected from the finger skin (or the body tissue inside the finger) without passing through an air gap. In this way, in response to using a signal of a first frequency band shorter than a second frequency band of the smart ring device of the present disclosure, a protruding structure is provided that surrounds the first type light-emitting element, which is arranged adjacent to the light-receiving element compared to the second type light-emitting element, together with the light-receiving element, so that an air gap can be eliminated or reduced on a signal transmission and reception path with the skin of the finger.

[0024] In addition, various purposes and effects provided by a smart ring device including a sensor-related protruding structure according to various embodiments may be mentioned according to embodiments of the detailed description.

[0025] FIG. 1 is a drawing showing an example of the exterior of a smart ring device according to one embodiment. FIG. 2 is a drawing showing an example of the internal structure of a smart ring device according to one embodiment.

[0026] As an example, FIG. 1 illustrates an example of the front surface of a smart ring device (100) when observed from a direction in which a user's finger is inserted (e.g., the z-axis direction hereinafter). The rear surface of the smart ring device (100) (e.g., a surface observed from a direction in which the user's finger is removed (e.g., the -z-axis direction)) may have the same shape, size, and structure as the front surface of the smart ring device (100). However, the present disclosure is not limited thereto, and the front surface of the smart ring device (100) and the rear surface of the smart ring device (100) may be configured to have different structures.

[0027] According to one embodiment, the above FIG. 2 may include an example of a cross-section taken along a portion between the front and the back of a smart ring device (100). For example, when a portion between the front and the back of the smart ring device (100) illustrated in FIG. 1 is cut along the xy plane, the internal structure of the smart ring device (100) illustrated in FIG. 2 can be observed. Depending on a change in the point where the portion between the front and the back of the smart ring device (100) is cut along the xy plane, the internal structure of the smart ring device (100) may also change.

[0028] Referring to FIGS. 1 and 2, a smart ring device (100) according to an embodiment may include a structure having a hollow ring shape at the center. As an example, the smart ring device (100) may include an outer structure (110) having a center including a first-sized through-hole, and an inner structure (120) (or a filled structure, an injection-molded product, an injection-molded structure) disposed on a first inner portion (or inner portion, inside, inner surface, inner circumference, inner space) of the outer structure (110) and including a second-sized through-hole smaller than the first size. The smart ring device (100) may include at least one internal element disposed between the outer structure (110) and the inner structure (120).

[0029] The first outer portion (110_cv) (or outer portion, outer periphery, outer curved portion, outer curved surface portion, outer circumferential surface, outer) of the outer structure (110) may have a certain thickness extending in the z-axis direction (e.g., a length shorter than the length of a user's finger) and may have a certain length in the circumferential direction with respect to the center (Cent_P) as the reference. The first outer portion (110_cv) of the outer structure (110) may include, for example, a surface observed in the direction from the outside toward the center (Cent_P) of the smart ring device (100) with respect to the illustrated drawing, or a surface exposed in the outward direction. The outer structure (110) is exemplified as a circular border, but the present disclosure is not limited thereto, and the outer structure (110) may have various shapes. As an example, at least one mark that can guide the finger wearing portion of the smart ring device (100) may be arranged on the surface of the outer structure (110). The mark may be engraved on the surface of the outer structure (110) or raised from the surface. The outer structure (110) may be formed of various materials. As an example, at least a portion of the outer structure (110) may be formed of a metallic material or a non-metallic material. As an example, since at least a portion of the inner structure (120) is formed through an injection molding process, at least a portion of the outer structure (110) may be formed of a material that can maintain a designed shape without being deformed in an injection molding environment.

[0030] The first inner portion of the outer structure (110) may include a surface opposite to the first outer portion (110_cv) of the outer structure (110). The first inner portion of the outer structure (110) may have the same center (Cent_P) as the first outer portion (110_cv) of the outer structure (110), and at least a portion of the first inner portion of the outer structure (110) may include a surface observed in an outward direction from the center (Cent_P). As an example, the first inner portion of the outer structure (110) may include a region on which at least one internal element may be mounted. Alternatively, at least a portion of the first inner portion of the outer structure (110) may have a region on which the internal element may be mounted formed along at least a portion of the circumference. At least a portion of the first inner portion (or inner circumferential surface, inner circumferential surface, inner portion, inner curved surface, inner bottom surface) of the outer structure (110) may face the second outer portion of the inner structure (120). Alternatively, at least a portion of the first inner portion of the outer structure (110) may be in contact with at least a portion of the second outer portion of the inner structure (120).

[0031] The side of the outer structure (110) may include an outer front side wall (110_fw) observed from the front direction of the smart ring device (100) (e.g., the direction in which a finger is inserted, or the z-axis direction) and an outer rear side wall observed from the rear direction of the smart ring device (100).

[0032] The outer front side wall (110_fw) may have the same shape and size as the outer rear side wall. The outer front side wall (110_fw) may include portions extending in a direction perpendicular to the center (Cent_P) from a plurality of points (or circular bands) of the first inner part of the outer structure (110) observed from the front. As an example, at least a portion of the outer front side wall (110_fw) may have a circular band shape and may be formed in the direction of the first outer part (110_cv) of the outer structure (110) toward the first inner part of the outer structure (110). The outer front side wall (110_fw), together with the outer rear side wall and the first inner part of the outer structure (110), may form at least a portion of an internal space (or a groove or recess in which at least a portion of an internal element may be seated) of the outer structure (110). The outer rear side wall may have the same shape and size as the outer front side wall (110_fw). For example, the outer rear side wall may include portions extending perpendicularly to the center (Cent_P) at multiple points of the first outer portion (110_cv) of the outer structure (110) as observed from the rear (e.g., in the -z-axis direction). The outer rear side wall may be positioned at a position shifted in the z-axis direction by the width (e.g., the length in the z-axis direction) of the outer structure (110) with respect to the front direction. For example, the outer rear side wall may form a groove or a groove in the circumferential direction together with the outer front side wall (110_fw) and the first inner portion of the outer structure (110). At least a portion of an internal element may be disposed in the groove or groove. According to one embodiment, at least a portion of the internal element and at least a portion of the inner structure (120) may be disposed in the groove or groove.

[0033] The inner structure (120) may include a second outer portion and an inner portion (120_cv) (or an inner curved surface, an inner circumference, an inner portion, an inner curved surface, an inner bottom surface). At least a portion of the second outer portion of the inner structure (120) may be disposed in an inner space of the outer structure (110) (e.g., a groove or a slit formed by the first inner portion, the outer front side wall (110_fw), and the outer rear side wall of the outer structure (110), and formed on the entire circumference or a portion of the circumference). Alternatively, at least a portion of the second outer portion of the inner structure (120) may include an injection-molded material formed by an injection molding process and may be disposed to fill at least a portion of the inner space. Correspondingly, the second outer portion of the inner structure (120) may have an irregular shape corresponding to the shape of the inner space of the outer structure (110) or an internal element disposed in the inner space. The front surface of the second outer portion of the inner structure (120) may be connected to the outer front side wall (110_fw) of the outer structure (110). Alternatively, when observed in the z-axis direction, the front surface of the second outer portion of the inner structure (120) may have a height substantially the same as or similar to the height of the outer front side wall (110_fw) of the outer structure (110). The rear surface of the second outer portion of the inner structure (120) may be connected to the outer rear side wall of the outer structure (110), and when observed in the -z-axis direction, the rear surface of the second outer portion of the inner structure (120) may have a height substantially the same as or similar to the height of the outer rear side wall of the outer structure (110).

[0034] The second inner part (120_cv) of the inner structure (120) may include a portion observed in an outward direction from the center (Cent_P). The second inner part (120_cv) of the inner structure (120) may include a circular border shape. The second inner part (120_cv) of the inner structure (120) may include uniformly formed regions, excluding a portion arranged in the protruding structures (131, 132, 133) according to one embodiment. At least a portion of the second inner part (120_cv) of the inner structure (120) may come into contact with at least a portion of a finger when the user wears the inner structure. Alternatively, at least a portion of the second inner part (120_cv) of the inner structure (120) may form a gap (or gap, air gap) separated from the skin of the finger depending on the shape or characteristics of the finger.

[0035] The above protruding structures (131, 132, 133) may include, for example, a first protruding structure (131), a second protruding structure (132), and a third protruding structure (133). The third protruding structure (133) may be arranged between the first protruding structure (131) and the second protruding structure (132). According to one embodiment, the first protruding structure (131) and the second protruding structure (132) may be positioned at a first distance from the third protruding structure (133). As an example, the first protruding structure (131) and the second protruding structure (132) may be arranged symmetrically left and right with respect to the third protruding structure (133).

[0036] The first protruding structure (131) is arranged on the left side with respect to an imaginary x-axis line passing vertically through the center (Cent_P), and may be arranged (or formed) on the second inner part (120_cv) of the inner structure (120) spaced apart from the third protruding structure (133) in the left direction by a first distance. The first protruding structure (131) may protrude from the second inner part (120_cv) of the inner structure (120) in the direction of the center (Cent_P) by a pre-designed height. The circumferential length of the first protruding structure (131) (e.g., the length in the direction in which the second inner part (120_cv) of the inner structure (120) extends in a circle) may be formed to be longer than the circumferential length of the third protruding structure (133). At least a part of the first protruding structure (131) may include a curved surface.

[0037] The size of the surface of the first protruding structure (131) positioned closer to the second inner portion (120_cv) of the inner structure (120) may be larger than the size of the surface positioned farther from the second inner portion (120_cv) of the inner structure (120). Alternatively, the first protruding structure (131) may include a shape in which the size of the cross section gradually decreases as it goes from the inner curved surface toward the center (Cent_P). Alternatively, the size of one surface of the first protruding structure (131) positioned close to the second inner portion (120_cv) of the inner structure (120) (or the size of the surface in contact with the second inner portion (120_cv) of the inner structure (120)) and the size of one surface of the first protruding structure (131) positioned far from the second inner portion (120_cv) of the inner structure (120) (or the size of one surface of the top or ceiling of the first protruding structure (131)) may be the same. At least a portion of the first protruding structure (131) may be rounded. As an example, at least a portion of the first protruding structure (131) facing the z-axis direction or the -z-axis direction may be rounded. The first protruding structure (131) may be formed of the same material as the material of the inner structure (120). Alternatively, the first protruding structure (131) may be formed of a material having a different transparency from that of the inner structure (120). The first protruding structure (131) may be formed together with the inner structure (120) during the formation process. Alternatively, the first protruding structure (131) may be created through an additional process after the inner structure (120) is formed (or after the inner structure (120) is formed through an injection process).

[0038] The first protruding structure (131) may be arranged so that, when observed in a direction toward the outside of the smart ring device (100) from the center (Cent_P), at least a portion thereof overlaps with a first position where the first light-receiving element (150_r1) is arranged and a second position where the first type first light-emitting element (151_t1) (or the first light-emitting element) is arranged. The first protruding structure (131) may serve to transmit a signal emitted by the first type first light-emitting element (151_t1) to the finger and to transmit a signal reflected from the inside or outside of the finger to the first light-receiving element (150_r1).

[0039] In this regard, based on the direction toward the outer structure (110) in which the first light-receiving element (150_r1) is arranged at the center (Cent_P), the first part (131_1p) of the first protruding structure (131) may be arranged at a position where at least a portion overlaps the first light-receiving element (150_r1) arranged at the first position. The area of ​​the first part (131_1p) on the second inner part (120_cv) of the inner structure (120) may be larger than the area of ​​the first light-receiving element (150_r1). The first light-receiving element (150_r1) may be formed to be wider than the area of ​​the first type first light-emitting element (151_t1), and correspondingly, the area of ​​the first part (131_1p) may be larger than the area of ​​the second part (131_2p). Based on the direction toward the outer structure (110) in which the first type first light-emitting element (151_t1) is arranged from the center (Cent_P), the second part (131_2p) of the first protruding structure (131) may be arranged at a position of the second inner part (120_cv) of the inner structure (120) that at least partially overlaps the first type first light-emitting element (151_t1) arranged at the second position. The area of ​​the second part (131_2p) (e.g., the area observed when viewed from the center (Cent_P) toward the outer structure (110) or the area formed on the second inner part (120_cv) of the inner structure (120)) may be different from the area of ​​the first part (131_1p). As an example, the area of ​​the second part (131_2p) on the second inner part (120_cv) of the inner structure (120) may be smaller than the area of ​​the first part (131_1p) on which the first light-receiving element (150_r1) is arranged. The first part (131_1p) of the first protruding structure (131) and the second part (131_2p) of the first protruding structure (131) may be connected to each other.Alternatively, the height of the first portion (131_1p) protruding from the second inner portion (120_cv) of the inner structure (120) toward the center (Cent_P) of the first portion (131_1p) and the height of the second portion (131_2p) may be formed to be substantially the same or similar. The first portion (131_1p) and the second portion (131_2p) may be separated by a first structure partition wall (131_w). At least a part of the first structure partition wall (131_w) may include an air layer (or air gap).

[0040] According to various embodiments, the first protruding structure (131) may include a first structure partition wall (131_w) disposed between the first part (131_1p) and the second part (131_2p). The first structure partition wall (131_w) may reduce crosstalk that occurs when a signal generated from the first type first light-emitting element (151_t1) is directly transmitted to the first light-receiving element (150_r1) disposed in the first part (131_1p) without passing through the inside or outside of the user's finger. The first structure partition wall (131_w) may be formed of a different material from the first part (131_1p) or the second part (131_2p) of the first protruding structure (131). Alternatively, the first structure bulkhead (131_w) may be formed of a material having a different transparency from that of the first portion (131_1p) or the second portion (131_2p) of the first protruding structure (131). At least a portion of the first structure bulkhead (131_w) may include an elastic material (or a material having an elasticity higher than a reference value), or may have a ductility that is the same as or similar to that of the first portion (131_1p) or the second portion (131_2p) of the first protruding structure (131).

[0041] The second protruding structure (132) may have substantially the same or similar shape, size, function, and material as the first protruding structure (131), except for the structure located on the second inner part (120_cv) of the inner structure (120). For example, the second protruding structure (132) may be formed of the same material as the inner structure (120) or may be formed of a material having higher transparency than the inner structure (120). The height (e.g., the length protruding from the second inner part (120_cv) of the inner structure (120) in the center (Cent_P) direction) and thickness (e.g., the length in the z-axis or -z-axis direction) and distance (e.g., the length in the circumferential direction of the second inner part (120_cv) of the inner structure (120)) of the second protruding structure (132) may be the same or similar to the height, thickness, and distance of the first protruding structure (131). According to one embodiment, it may be placed (or formed) on the second inner part (120_cv) of the inner structure (120) located to the right of an imaginary x-axis line passing vertically through the center (Cent_P) and spaced apart from the third protruding structure (133) by a first distance in the right direction.

[0042] The second protruding structure (132) may include a third part (132_1p) disposed at a different position of the second inner part (120_cv) of the inner structure (120) that at least partially overlaps with a third position where the second light-receiving element (150_r2) is disposed when viewed from the center (Cent_P) toward the outer structure (110) of the smart ring device (100), and a fourth part (132_2p) disposed at a position of the second inner part (120_cv) of the inner structure (120) that at least partially overlaps with a fourth position where the first type second light-emitting element (152_t1) (or the second light-emitting element) is disposed when viewed from the center (Cent_P) toward the outer structure (110) of the smart ring device (100). The area of ​​the third portion (132_1p) (e.g., the area observed when viewed from the center (Cent_P) toward the outer structure (110) or the area formed on the second inner portion (120_cv) of the inner structure (120)) may be different from the area of ​​the fourth portion (132_2p). For example, the area of ​​the third portion (132_1p) on the second inner portion (120_cv) of the inner structure (120) may be greater than the area of ​​the second light-receiving element (150_r2). The area of ​​the fourth portion (132_2p) on the second inner portion (120_cv) of the inner structure (120) may be greater than the area of ​​the first type second light-emitting element (152_t1). The second light-receiving element (150_r2) may be formed to be wider than the width of the first type second light-emitting element (152_t1), and correspondingly, the width of the third portion (132_1p) may be larger than the width of the fourth portion (132_2p). The width of the third portion (132_1p) may be the same as or similar to the width of the first portion (131_1p), and the width of the fourth portion (132_2p) may be the same as or similar to the width of the second portion (131_2p). The third portion (132_1p) of the second protruding structure (132) and the fourth portion (132_2p) of the second protruding structure (132) may be connected to each other.Alternatively, the height of the third portion (132_1p) protruding from the second inner portion (120_cv) of the inner structure (120) toward the center (Cent_P) of the third portion (132_1p) and the height of the fourth portion (132_2p) may be formed to be substantially the same or similar. The third portion (132_1p) and the fourth portion (132_2p) may be separated by a second structure partition wall (132_w). At least a portion of the second structure partition wall (132_w) may include an air layer or an air gap.

[0043] According to one embodiment, the second protruding structure (132) may include a second structure partition wall (132_w) disposed between the third portion (132_1p) and the fourth portion (132_2p). The second structure partition wall (132_w) may reduce crosstalk that occurs when a signal generated from the first type second light-emitting element (152_t1) is directly transmitted to the second light-receiving element (150_r2) disposed in the fourth portion (132_2p) without passing through the inside or outside of the user's finger. The second structure partition wall (132_w) may be formed of a different material from the third portion (132_1p) or the fourth portion (132_2p) of the second protruding structure (132), similar to the first structure partition wall (131_w). Alternatively, the second structure bulkhead (132_w) may be formed of a material having a different transparency from that of the third portion (132_1p) or the fourth portion (132_2p) of the second protruding structure (132). Alternatively, the second structure bulkhead (132_w) may be the same as or similar to at least one of the material, color, and shape of the first structure bulkhead (131_w). At least a portion of the second structure bulkhead (132_w) may include an elastic material or have a ductility that is the same as or similar to that of the third portion (132_1p) or the fourth portion (132_2p) of the second protruding structure (132).

[0044] The third protruding structure (133) may be arranged at a position spaced apart from the first protruding structure (131) in a rightward direction by a first distance and at a position spaced apart from the second protruding structure (132) in a leftward direction by a first distance. Alternatively, the third protruding structure (133) may be arranged at a predetermined position of the second inner part (120_cv) of the inner structure (120) corresponding to the middle of the first protruding structure (131) and the second protruding structure (132) based on an imaginary y-axis line passing horizontally through the center (Cent_P). The third protruding structure (133) may be arranged so that at least a portion overlaps with the second type light-emitting element (150_t2) (or the third light-emitting element) based on a point of the outer structure (110) from the center (Cent_P) (e.g., a point located on an imaginary x-axis or -x-axis passing vertically through the center (Cent_P). The third protruding structure (133) may include an area larger than that of the second type light emitting element (150_t2). The third protruding structure (133) (e.g., at least one of the width, thickness, and length) may be formed smaller than the first protruding structure (131) or the second protruding structure (132) (e.g., at least one of the width, thickness, and length). Alternatively, the width or thickness of the third protruding structure (133) may be the same as or similar to the width or thickness of the first protruding structure (131) or the second protruding structure (132), and the length of the third protruding structure (133) (e.g., the length extending in the circumferential direction) may be formed shorter than the length of the first protruding structure (131) or the second protruding structure (132).

[0045] The internal elements may include a printed circuit board (140), a battery (170_bat), an antenna (190_ant), and a charging interface (170_char_if). The internal elements may be at least partially disposed in a groove or a space (or an internal space) formed by an outer side wall (e.g., an outer front side wall (110_fw) and an outer rear side wall) and an inner portion of the outer structure (110) in at least a portion of the circumference.

[0046] As an example, the printed circuit board (140) includes first to fourth substrate parts (141, 142, 143, 144), and the first to fourth substrate parts (141, 142, 143, 144) can be respectively arranged at different positions in the inner space of the outer structure (110). The upper portion of the printed circuit board (140) can be arranged so that the inner structure (120) covers it. The first to fourth substrate parts (141, 142, 143, 144) can be connected to each other. Alternatively, the printed circuit board (140) may include first to fourth substrate portions (141, 142, 143, 144) configured in a rigid or hard form, and flexible portions connecting the first to fourth substrate portions (141, 142, 143, 144). For example, the flexible portions may include a first flexible portion connecting the first substrate portion (141) and the second substrate portion (142), a second flexible portion connecting the second substrate portion (142) and the third substrate portion (143), and a third flexible portion connecting the third substrate portion (143) and the fourth substrate portion (144). At least one electronic element may be arranged on the printed circuit board (140). For example, a sensor unit (150) may be arranged on the printed circuit board (140). The sensors (e.g., the first type first light-emitting element (151_t1), the first type second light-emitting element (152_t1), the second type light-emitting element (150_t2), the first light-receiving element (150_r1), and the second light-receiving element (150_r2)) arranged in the sensor section (150) may be divided and arranged in the first to fourth substrate portions (141, 142, 143, 144).

[0047] According to one embodiment, the first substrate portion (141) may be disposed between the battery (170_bat) and the third substrate portion (143). The first substrate portion (141) may be disposed at least partially on the inner side of the outer structure (110) within a range of about 10 to 90 degrees in the left direction based on an imaginary line extending in the -x-axis direction from the center (Cent_P) (an area corresponding to the third quadrant in the xy coordinate system). As an example, a temperature sensor (150_temp), a first type first light-emitting element (151_t1) (e.g., a light-emitting element including a light-emitting circuit), a first light-receiving element (150_r1) (e.g., a light-receiving element including a light-receiving circuit), a communication module (190) (e.g., a communication module including a communication circuit), a processor (160) (e.g., a processor including a processing circuit), and a memory (180) may be disposed on the first substrate portion (141). In the illustrated drawing, a temperature sensor (150_temp), a first type first light-emitting element (151_t1), and a first light-receiving element (150_r1) are arranged on a first surface (e.g., a surface facing the center (Cent_P)) of the first substrate portion (141), and a communication module (190), a processor (160), and a memory (180) are arranged on a second surface (e.g., an outer surface facing the outer structure (110) from the center (Cent_P) or an opposite surface of the first surface) of the first substrate portion (141), but the present disclosure is not limited thereto. For example, all of the communication module (190), the processor (160), and the memory (180) may be arranged on the front surface of the first substrate portion (141), or at least some of them may be arranged on the rear surface of the first substrate portion (141). Alternatively, at least some of the communication module (190), processor (160) and memory (180) may be placed on another substrate portion, or a configuration placed on another substrate portion may be placed on the first substrate portion (141).In relation to the acquisition of a biosignal (or sensor signal) to be acquired through the user's finger, since the location of a specific tissue (e.g., blood vessel) placed on the finger is placed at a statistically designated location, the first type first light-emitting element (151_t1) and the first light-receiving element (150_r1) located on the first substrate portion (141) can be fixed on the front surface (or the surface facing the center) of the first substrate portion (141).

[0048] According to one embodiment, the first light-receiving element (150_r1) may be positioned at a range of about 50 to 70 degrees (e.g., 60 degrees) in the left direction based on the virtual x-axis or -x-axis. According to one embodiment, the first light-receiving element (150_r1) is positioned at a position of the outer structure (110) rotated at about 60 degrees to the left based on the virtual x-axis or -x-axis, and may collect a signal, for example, a signal of a first frequency band or a signal of a second frequency band, that is input through a finger. The communication module (190) may be electrically connected to an antenna (190_ant). Since the first type first light-emitting element (151_t1) irradiates a signal of a relatively short frequency band compared to the second type light-emitting element (150_t2), it may be positioned closer to the first light-receiving element (150_r1) than the second type light-emitting element (150_t2).

[0049] According to one embodiment, a first protruding structure (131) (or protrusion) may be arranged on a second inner portion (120_cv) of an inner structure (120) covering at least a portion of a first substrate portion (141). The first protruding structure (131) may include, for example, a first part (131_1p) of the first protruding structure (131) arranged at a first position of the second inner part (120_cv) of the inner structure (120) so as to overlap at least a portion of the first light-receiving element (150_r1) with respect to a first direction from the center (Cent_P) toward a point of the outer structure (110), and a second part (131_2p) of the first protruding structure (131) arranged at a second position of the second inner part (120_cv) of the inner structure (120) so as to overlap at least a portion of the first type first light-emitting element (151_t1). The first part (131_1p) and the second part (131_2p) may be connected. A first structure partition wall (131_w) may be arranged between the first portion (131_1p) and the second portion (131_2p). Correspondingly, at least a portion of the first substrate portion (141) may be arranged at a predetermined position of the outer structure (110) overlapping the first protruding structure (131) with respect to the first direction. Alternatively, the first protruding structure (131) may be arranged to overlap the first substrate portion (141) with respect to the first direction.

[0050] According to one embodiment, the second substrate portion (142) may be disposed between the charging interface (170_char_if) and the third substrate portion (143). The second substrate portion (142) may be disposed at least partially on the inner side of the outer structure (110) within a range of about 10 to 90 degrees in the right direction (in the xy coordinate system, an area corresponding to the fourth quadrant) based on an imaginary line extending in the -x-axis direction from the center (Cent_P). According to one embodiment, a first type second light-emitting element (152_t1) and a second light-receiving element (150_r2) may be disposed on the second substrate portion (142). For example, in order to irradiate a signal (or light) to a specific tissue (e.g., a blood vessel) placed on a user's finger, the first type second light-emitting element (152_t1) and the second light-receiving element (150_r2) may be placed on the front surface (e.g., in the direction toward the center (Cent_P)) of the second substrate portion (142) and in the four quadrants in the xy coordinate system. For example, with reference to a reference line vertically passing through the center (Cent_P) of the smart ring device (100), at least a portion of the second substrate portion (142) may be placed symmetrically with respect to the first substrate portion (141) with respect to the third substrate portion (143).

[0051] The second light-receiving element (150_r2) may be positioned at a range of about 50 to 70 degrees (e.g., 60 degrees) in the right direction based on the virtual -x-axis or x-axis. According to one embodiment, the second light-receiving element (150_r2) may be positioned at a position of the outer structure (110) rotated at about 60 degrees in the right direction from the virtual x-axis or -x-axis, so as to collect a signal of the first frequency band or a signal of the second frequency band reflected through the inside of the finger. The first type second light-emitting element (152_t1) may be positioned closer to the second light-receiving element (150_r2) than to the second type light-emitting element (150_t2) by irradiating a signal of a relatively shorter frequency band than the second type light-emitting element (150_t2) in the same or similar manner as the first type first light-emitting element (151_t1).

[0052] According to one embodiment, a second protruding structure (132) (or protrusion) may be arranged on the second inner portion (120_cv) of the inner structure (120) covering at least a portion of the second substrate portion (142). The second protruding structure (132) may include, for example, a third part (132_1p) of the second protruding structure (132) arranged at a third position of the second inner part (120_cv) of the inner structure (120) so as to overlap at least a portion of the second light-receiving element (150_r2) with respect to a second direction from the center (Cent_P) toward a point of the outer structure (110), and a fourth part (132_2p) of the second protruding structure (132) arranged at a fourth position of the second inner part (120_cv) of the inner structure (120) so as to overlap at least a portion of the first type second light-emitting element (152_t1). The third part (132_1p) and the fourth part (132_2p) may be connected. A second structure partition wall (132_w) may be arranged between the third portion (132_1p) and the fourth portion (132_2p). Correspondingly, at least a portion of the second substrate portion (142) may be arranged at a predetermined position of the outer structure (110) that overlaps the second protruding structure (132) with respect to the second direction. Alternatively, the second protruding structure (132) may be arranged to overlap the second substrate portion (142) with respect to the second direction.

[0053] According to one embodiment, the third substrate portion (143) may be disposed between the first substrate portion (141) and the second substrate portion (142). At least a portion of the third substrate portion (143) may be disposed at a position of the outer structure (110) facing in the -x-axis direction from the center (Cent_P). The third substrate portion (143) may include, for example, an inertial sensor (150_gv), a second type light-emitting element (150_t2), and a sensor circuit (150_con). The second type light-emitting element (150_t2) may be fixedly disposed on the front surface (e.g., one surface facing the center (Cent_P)) of the second substrate portion (142). The inertial sensor (150_gv) and the sensor circuit (150_con) may be disposed on either the front or the rear surface of the third substrate portion (143). The second type light emitting element (150_t2) can irradiate a signal (or second signal) of a different frequency band from the first type first light emitting element (151_t1) or the first type second light emitting element (152_t1) in the direction of the center (Cent_P). As an example, the second type light emitting element (150_t2) can irradiate a signal (or light) of a longer wavelength than the first type first light emitting element (151_t1) or the first type second light emitting element (152_t1).

[0054] According to one embodiment, a third protruding structure (133) may be arranged on a second inner portion (120_cv) of an inner structure (120) that covers at least a portion of a third substrate portion (143). The third protruding structure (133) may be arranged at a fifth position of the second inner portion (120_cv) of the inner structure (120) so as to overlap at least a portion of the second type light emitting element (150_t2) with respect to a third direction (e.g., a -x-axis direction passing through the center) from the center (Cent_P) toward a point of the outer structure (110). The size of the third protruding structure (133) may be larger than that of the second type light emitting element (150_t2). At least a portion of the third substrate portion (143) may be arranged at a predetermined position of the outer structure (110) that overlaps with the third protruding structure (133) with respect to the third direction. Alternatively, the third protruding structure (133) may be positioned to overlap the third substrate portion (143) based on the third direction.

[0055] According to one embodiment, the fourth substrate portion (144) may be disposed between the second substrate portion (142) and the battery (170_bat). For example, a power circuit (170_ic) may be disposed in the fourth substrate portion (144). The power circuit (170_ic) may be electrically connected to a charging interface (170_char_if). Alternatively, the power circuit (170_ic) may be electrically connected to a charging circuit connected to the charging interface (170_char_if).

[0056] At least some of the components (or electronic elements) arranged on the first to fourth substrate portions (141, 142, 143, 144) described above may be arranged on other substrate portions, or at least some of the components may be omitted. Alternatively, a new electronic element related to the operation of the smart ring device (100) may be added to at least one of the first to fourth substrate portions (141, 142, 143, 144).

[0057] The above battery (170_bat) can supply power related to the operation of the smart ring device (100). In this regard, the battery (170_bat) can be electrically connected to a power circuit (170_ic). Alternatively, it can be connected to a charging circuit for charging the battery (170_bat). Alternatively, the battery (170_bat) can be connected to a charging circuit via the power circuit (170_ic). The battery (170_bat) can include a structure in which at least a portion can be mounted on the inner side of the outer structure (110) of the smart ring device (100). For example, the battery (170_bat) can have a width and thickness corresponding to a portion of the inner space of the outer structure (110), and at least a portion can be bent or have a structure in which it can be bent. Alternatively, the battery (170_bat) may be arranged in a band shape and then placed on the inner side of the outer structure (110) such that at least a portion thereof is bent or curved. During the assembly process, at least a portion of the battery (170_bat) may be placed so as to be in contact with the inner side of the outer structure (110). At least a portion of the charging interface (170_char_if) and at least a portion of the antenna (190_ant) may be placed on one side of the battery (170_bat) (e.g., a side facing the center (Cent_P)). The battery (170_bat) supplies charged power to the smart ring device (100) in response to the control of the power circuit (170_ic), and may be charged with power received through the charging interface (170_char_if) in response to the control of the power circuit (170_ic).

[0058] The above antenna (190_ant) may be arranged so that, when connected to one side of the first substrate portion (141), it overlaps at least a portion of the battery (170_bat) arranged in the inner space of the outer structure (110) when viewed in one direction from the center (Cent_P) toward the outer structure (110). According to one embodiment, at least a portion of the antenna (190_ant) may be formed of a material that includes a bent shape or can be bent, and then may be arranged on a portion of the battery (170_bat) so as to correspond to the bent shape of the battery (170_bat). A coating layer of a non-conductive material may be arranged on one side of the antenna (e.g., a side facing the center (Cent_P)) or at least a portion of the inner structure (120) may be arranged. The thickness of a portion of the inner structure (120) covering the above-mentioned surface of the antenna (190_ant) may be formed thinner than the thickness of another area (e.g., an area where the inner structure (120) is arranged to cover the printed circuit board (140).

[0059] The charging interface (170_char_if) may be used to wirelessly charge the battery (170_bat). The charging interface (170_char_if) may be electrically connected to the power circuit (170_ic) disposed on the fourth substrate portion (144). Alternatively, the charging interface (170_char_if) may be electrically connected to the power circuit (170_ic) through the charging circuit described in FIG. 13, which will be described later, or may be electrically connected to the battery (170_bat) through the charging circuit. At least a portion of the charging interface (170_char_if) may include a curved shape or may be formed of a curved material. At least a portion of the charging interface (170_char_if) may be disposed on one surface of the curved battery (170_bat) (e.g., a surface facing the center (Cent_P) of the smart ring device (100)). A portion of the inner structure (120) may be disposed on at least a portion of the surface of the charging interface (170_char_if) (e.g., a surface facing the center (Cent_P)). Alternatively, a portion of the inner structure (120) may be disposed to cover at least a portion of the surface of the charging interface (170_char_if). The thickness of a portion of the inner structure (120) covering the surface of the charging interface (170_char_if) (e.g., a surface facing the center (Cent_P)) may be formed to be thinner than the thickness of another region (e.g., a region where the inner structure (120) is disposed to cover the printed circuit board (140). The thickness of a portion of the inner structure covering a surface of the charging interface (170_char_if) may be the same as or similar to the thickness of a portion of the inner structure (120) covering a surface of the antenna (190_ant).

[0060] According to various embodiments, the smart ring device (100) may further include a metal material layer (e.g., a metal coating layer, a metal layer, a metal pattern layer) covering the second inner part (120_cv) of the inner structure (120). In a situation where the metal material layer is arranged to cover the second inner part (120_cv) of the inner structure (120), the metal material layer may include a hole (or an opening) provided so that at least a portion of an area where the sensor unit (150) is arranged (or a signal irradiation area of ​​light-emitting elements included in the sensor unit (150), a signal collection area of ​​light-receiving elements) may be exposed toward the center (Cent_P). In addition, the metal material layer may include a hole (or an opening) provided so that at least a portion of the antenna (190_ant) and the charging interface (170_char_if) may be exposed toward the center (Cent_P).

[0061] As described above, the smart ring device (100) according to the embodiment of the present disclosure may include a sensor unit (150) in relation to an operation of collecting a biosignal through a user's finger, and may include at least one protruding structure that protrudes from the second inner part (120_cv) of the inner structure (120) toward the center (Cent_P) of the smart ring device (100) (or the center of the space into which a finger is inserted) and covers the sensor unit (150) so as to eliminate or reduce an air gap between the finger and the sensor unit (150). The at least one protruding structure may be arranged to cover both a light-emitting element and a light-receiving element that are arranged adjacently in relation to signal transmission and reception of a first frequency band, and may protrude toward the center (Cent_P). The smart ring device (100) of the present invention can improve the efficiency of signal transmission and collection by eliminating or reducing the air gap between the finger and the sensor unit (150) by having the first part (131_1p) covering the light-receiving element and the second part (131_2p) covering the light-emitting element come into close contact with a part of the finger, thereby improving noise generation due to the air gap. In the above description, it has been exemplified that two light-emitting elements (e.g., a first type first light-emitting element (151_t1) and a first type second light-emitting element (152_t1)) are arranged in relation to signal transmission of the first frequency band, but the smart ring device (100) according to the embodiment of the present invention is not limited thereto. For example, a smart ring device (100) according to an embodiment of the present disclosure may include only one light-emitting element (e.g., a first type first light-emitting element (151_t1)) or three or more light-emitting elements in relation to signal transmission of a first frequency band. In this case, the at least one protruding structure (e.g., a protruding structure arranged to cover both the first type light-emitting element and the light-receiving element) may include only one protruding structure or three or more protruding structures.

[0062] FIG. 3 is a drawing showing an example of an outer structure and some internal elements of a smart ring device according to one embodiment.

[0063] Referring to FIGS. 1 to 3, an outer structure (110) according to one embodiment may include a first outer portion (110_cv) (or outer, outer circumferential surface, outer curved surface, outer surface, outer outer surface, outer side surface), a first inner portion (110_bt_cv) (or inner, inner circumferential surface, inner curved surface, inner curved surface, inner surface, inner bottom surface, inner bottom surface, inner side surface), an outer front side wall (110_fw), an outer rear side wall (110_rw), a first guide (110_mw1), and a second guide (110_mw2).

[0064] The first outer portion (110_cv) may have a certain width in the z-axis direction (e.g., a length shorter than the length of the user's finger) and may include a circular band shape based on the center (Cent_P) of the smart ring device (100). Alternatively, the first outer portion (110_cv) may include a cylindrical frame with a hollow center based on the center (Cent_P). The first outer portion (110_cv) may be formed of various materials. For example, the first outer portion (110_cv) may be formed of a metal material. Alternatively, various decorations such as precious metals or jewels may be arranged on the first outer portion (110_cv). For example, the first outer portion (110_cv) may include various raised portions (or raised structures) and engraved portions (or engraved structures) related to position identification of the circular smart ring device (100). A display unit (or at least one LED or lamp) may be placed on the first outer portion (110_cv). The display unit is a display device, electrically connected to the printed circuit board (140) described in FIG. 2, and can display a screen in response to control by the processor (160).

[0065] The first inner portion (110_bt_cv) may include a circular band shape or a band shape having a certain width in the z-axis direction and extending in the circumferential direction based on the center (Cent_P). The first inner portion (110_bt_cv) may be arranged at a position spaced apart from the first outer portion (110_cv) at a certain distance in the center (Cent_P) direction. The first inner portion (110_bt_cv) and the first outer portion (110_cv) respectively divide the outer surface and the inner surface of the outer structure (110), and the interiors of the first inner portion (110_bt_cv) and the first outer portion (110_cv) may include a filled state. As another example, at least a void may be formed between the first inner portion (110_bt_cv) and the first outer portion (110_cv) of the outer structure (110). The first inner portion (110_bt_cv) may have a different circumference (e.g., smaller) and the same center (Cent_P) as the first outer portion (110_cv).

[0066] The outer front side wall (110_fw) may include a band structure that protrudes in the direction of the center (Cent_P) from a first edge of the first inner portion (110_bt_cv) (e.g., an edge toward an inlet (e.g., a space or opening into which a finger is first inserted into the smart ring device (100) (or an inlet portion) into which a finger is inserted, an edge toward an outlet (e.g., a space or opening into which a finger is first removed from the smart ring device (100) (or an outlet portion) from which a finger is removed before the inlet portion when the finger is removed from the smart ring device (100), or an edge in the -z-axis direction). At least a portion of the outer front side wall (110_fw) (e.g., each side wall portion at various points) may be formed to protrude in a direction perpendicular to the first inner portion (110_bt_cv) or the first outer portion (110_cv) (e.g., each outer portion at various points). Alternatively, at least a portion of the outer front side wall (110_fw) (e.g., each side wall portion at various points) may protrude (or extend) toward the center point of the empty space corresponding to the entrance of the first inner portion (110_bt_cv) or the first outer portion (110_cv). The extension length of the outer front side wall (110_fw) (e.g., the length protruding in the direction of the center (Cent_P)) may be shorter than the width (e.g., the length in the z-axis direction) of the first outer portion (110_cv) (or the first inner portion (110_bt_cv)).

[0067] The outer rear side wall (110_rw) may include a band structure protruding in the direction of the center (Cent_P) from the second edge of the first inner portion (110_bt_cv) (e.g., the edge toward the exit side that is inserted later when the smart ring device (100) is inserted into a finger, the edge toward the exit side that is pulled out earlier than the entrance side when the finger is pulled out from the smart ring device (100), or the edge in the z-axis direction). The outer rear side wall (110_rw) may be arranged at a position spaced apart from the outer front side wall (110_fw) by a certain distance (e.g., the width of the outer structure (110)) in the z-axis direction (or -z-axis direction). The outer rear side wall (110_rw) may have the same or similar structure as the outer front side wall (110_fw). For example, at least a portion of the outer rear side wall (110_rw) (e.g., each side wall portion at various points) may be formed to protrude in a direction perpendicular to the first inner portion (110_bt_cv) or the first outer portion (110_cv) (e.g., each outer portion at various points). Alternatively, at least a portion of the outer rear side wall (110_rw) (e.g., each side wall portion at various points) may protrude (or extend) toward a center point of an empty space corresponding to an exit of the first inner portion (110_bt_cv) or the first outer portion (110_cv). The extension length (e.g., the length protruding in the direction of the center (Cent_P)) of the outer rear side wall (110_rw) may be shorter than the width (e.g., the length in the z-axis direction) of the first outer portion (110_cv) (or the first inner portion (110_bt_cv)).

[0068] The first inner portion (110_bt_cv), the outer front side wall (110_fw) and the outer rear side wall (110_rw) protruding from both edges of the first inner portion (110_bt_cv) may form at least a portion of an internal space (110_grv) (or a groove, a recess, a groove) of the outer structure (110). For example, at least a portion of a battery (170_bat), an antenna (190_ant), and a charging interface (170_char_if) described above in FIG. 2 may be arranged in the internal space (110_grv) of the outer structure (110).

[0069] The first guide (110_mw1) may extend from the outer front side wall (110_fw) at the first edge (e.g., the inlet edge) of the first inner portion (110_bt_cv). Alternatively, the first guide (110_mw1) may be positioned adjacent to the outer front side wall (110_fw) and may protrude from the bottom surface of the first inner portion (110_bt_cv) in a direction toward the center (Cent_P) or in a direction perpendicular to the bottom surface. According to one embodiment, the first guide (110_mw1) may be arranged to surround at least a portion of the first side surface of the printed circuit board (140) described in FIG. 2. The first guide (110_mw1) can serve as a support for the injection molded product while the injection molding process is in progress after the printed circuit board (140) is installed in the internal space (110_grv) of the outer structure (110). The first guide (110_mw1) can protrude toward the center (Cent_P) from at least a portion of the outer front side wall (110_fw) or at least a point on the bottom surface of the first inner portion (110_bt_cv).

[0070] The second guide (110_mw2) may extend from the outer rear side wall (110_rw) at the second edge (e.g., the outlet edge) of the first inner portion (110_bt_cv). Alternatively, the second guide (110_mw2) may be positioned adjacent to the outer rear side wall (110_rw) and may protrude from the bottom surface of the first inner portion (110_bt_cv) in a direction toward the center (Cent_P) or in a direction perpendicular to the bottom surface. In this regard, the second guide (110_mw2) may be positioned at a position spaced apart from the first guide (110_mw1) by a certain distance in the z-axis direction. The second guide (110_mw2) may have a different shape from the first guide (110_mw1) depending on the shape of the printed circuit board (140) (or the shapes of various electronic elements placed on the printed circuit board (140). According to one embodiment, the second guide (110_mw2) may be arranged to surround at least a portion of the second side of the printed circuit board (140) described in FIG. 2. The second guide (110_mw2) may serve as a support for the injection-molded article together with the first guide (110_mw1) during the injection process after the printed circuit board (140) is placed in the internal space (110_grv) of the outer structure (110). The second guide (110_mw2) may protrude toward the center (Cent_P) from at least a portion of the outer rear side wall (110_rw) or at least a point on the bottom surface of the first inner portion (110_bt_cv). The second guide (110_mw2) may be formed of the same material as the first guide (110_mw1). In one embodiment, at least a portion of the first guide (110_mw1) and the second guide (110_mw2) may have the same material as the outer structure (110). In one embodiment, the first guide (110_mw1) and the second guide (110_mw2) may be arranged on a portion of the outer structure (110).For example, the first guide (110_mw1) and the second guide (110_mw2) may be arranged in the first inner portion (110_bt_cv) forming the inner space (110_grv) excluding the area where the antenna (190_ant) and the charging interface (170_char_if) are arranged or the inner space (110_grv) excluding the area where the battery (170_bat) is arranged.

[0071] FIG. 4 is a drawing showing an example of a combined state of an outer structure and internal elements of a smart ring device according to one embodiment, observed from a first direction. FIG. 5 is a drawing showing an example of a combined state of an outer structure and internal elements of a smart ring device according to one embodiment, observed from a second direction.

[0072] Referring to FIGS. 1 to 3, 4 and 5, a printed circuit board (140) described in FIG. 2 may be placed in an internal space (internal space (110_grv) of FIG. 3) formed within an outer structure (110). Since the internal space (110_grv) of the outer structure (110) is formed based on the first inner portion (110_bt_cv) including a curved surface, at least a portion of the printed circuit board (140) placed in the internal space (110_grv) may include a curved shape or may be provided to be bendable. According to various embodiments, at least a portion of the internal space (110_grv) (or opening, groove, recess, seating portion, or groove) may include, depending on the definition method, a space including a first inner portion (110_bt_cv), an outer front sidewall (e.g., an outer front sidewall (110_fw) of FIG. 3), and an outer rear sidewall (e.g., an outer rear sidewall (110_rw) of FIG. 3), or a space formed by the first inner portion (110_bt_cv), the first guide (110_mw1), and the second guide (110_mw2). For example, as described above, the printed circuit board (140) on which the sensor portion (150) is arranged includes first to fourth substrate portions (141, 142, 143, 144), and each of the substrate portions may be connected via flexible portions.

[0073] According to one embodiment, based on the drawing shown, a third substrate portion (143) (or a substrate portion on which a second type light-emitting element (150_t2) is arranged) may be arranged in an internal space (110_grv) directly below the center (Cent_P). Based on the third substrate portion (143), a first substrate portion (141) (or a substrate portion on which a first type first light-emitting element (151_t1) and a first light-receiving element (150_r1) are arranged) may be arranged in a left internal space (110_grv), and a second substrate portion (142) (or a substrate portion on which a first type second light-emitting element (152_t1) and a second light-receiving element (150_r2) are arranged) may be arranged in a right internal space (110_grv).

[0074] A battery (170_bat) as shown in FIG. 2 may be arranged on the upper portion (e.g., a portion in the x-axis direction) of the outer structure (110), and an antenna (190_ant) and a charging interface (170_char_if) may be arranged on the inner surface (e.g., a surface facing the center (Cent_P)) of the battery (170_bat). The antenna (190_ant) may be electrically connected to a portion of a substrate (e.g., a first substrate portion (141)) on which a communication module is arranged. The charging interface (170_char_if) may be electrically connected to a portion of a substrate (e.g., a fourth substrate portion (144)) on which a power circuit (170_ic) is arranged. The battery (170_bat) disposed between the antenna (190_ant) and the charging interface (170_char_if) and the first outer portion (110_cv) may be connected to a portion of the substrate (e.g., the fourth substrate portion (144)) on which the power circuit (170_ic) is disposed.

[0075] The first to fourth substrate parts (141, 142, 143, 144) of the above-described printed circuit board (140) are given an order for explanation, and the order of each substrate part may vary as needed. For example, the third substrate part (143) may be named the first substrate part, and the first substrate part (141) arranged on the left side of the third substrate part (143) based on the illustrated drawing may be named the second substrate part (142), and the second substrate part (142) arranged on the right side of the third substrate part (143) may be named the third substrate part.

[0076] FIG. 6 is a drawing showing an example of the appearance of a first type smart ring device according to an embodiment. FIG. 7 is a drawing showing an example of the structure of a first type protruding structure according to an embodiment. The first type smart ring device (100_1) shown in FIG. 6 is a drawing schematically showing the protruding structures and the outer structure and the second inner part (120_cv) of the inner structure (120) among the structures related to the smart ring device (100) described above in FIGS. 1 to 5. This first type smart ring device (100_1) may further include at least some of the other components of the smart ring device (100) described above in FIGS. 1 to 5.

[0077] Referring to FIGS. 1 to 6, a first type smart ring device (100_1) according to one embodiment includes an outer structure (110) and an inner structure (120), and may include first type protruding structures (131_t1, 132_t1, 133_t1).

[0078] The outer structure (110) may include a structure identical to or similar to the outer structure (110) described above with reference to FIGS. 1 to 5. For example, the outer structure (110) may include a first outer portion (110_cv), an outer front side wall (110_fw), and an outer rear side wall (110_rw). In addition, the outer structure (110) may include a first inner portion (110_bt_cv), a first guide (110_mw1), and a second guide (110_mw2) described with reference to FIGS. 4 and 5. At least a portion of a printed circuit board (140) on which a sensor portion (150) is arranged, a battery (170_bat), an antenna (190_ant), and a charging interface (170_char_if) may be arranged inside the outer structure (110).

[0079] The inner structure (120) may include a structure identical to or similar to the inner structure (120) described above with reference to FIGS. 1 to 5. For example, the inner structure (120) may include a second outer portion facing (or at least a portion of which is in contact with or fills at least a portion of an inner space (the inner space 110_grv of FIG. 2)) the first inner portion (110_bt_cv) of the outer structure (110), and a second inner portion (120_cv) connected to the second outer portion and arranged in the direction of the center (Cent_P). The second outer portion of the inner structure (120) may be arranged to cover at least a portion of the printed circuit board (140) on which the sensor portion (150) is arranged, the battery (170_bat), the antenna (190_ant), and the charging interface (170_char_if). The second inner portion (120_cv) may include a smoothly formed curved surface, except for the area where the first type protruding structures (131_t1, 132_t1, 133_t1) are arranged. At least a portion of the second inner portion (120_cv) may come into contact with at least a portion of the outer skin of a user's finger while the user's finger is inserted into the first type smart ring device (100_1).

[0080] According to various embodiments, the second inner portion (120_cv) may include at least a portion having a structure different from the surroundings (e.g., raised portions or engraved portions). At least a portion of the inner structure (120) may be arranged to cover the sensor portion (150) of the printed circuit board (140). In relation to signal transmission and reception of the sensor portion (150), the inner structure (120) may be formed of a material having a predetermined transparency (or a signal transmittance that enables signal transmission and reception of the sensor portion (150)) (e.g., a transparent epoxy or a non-conductive material such as glass, silicon, or a gem having a predetermined transparency). The second outer part and the second inner part (120_cv) of the inner structure (120) are distinguished according to their positions with respect to the outer structure (110) for convenience of explanation, and the second outer part and the second inner part (120_cv) can form one body (or an injection structure formed through at least one injection process).

[0081] According to various embodiments, the inner structure (120) may be composed of structures of different materials. For example, the inner structure (120) may include a first part formed through an injection molding process in the inner space (110_grv) of the outer structure (110) in which the printed circuit board (140) is arranged, and a second part arranged to cover at least a portion of the battery (170_bat) (or the antenna (190_ant) and the charging interface (170_char_if)) within the inner structure (110). The first part and the second part of the inner structure (120) may be connected to each other to form a single body, but in other embodiments, they may be two separate structures or may be bonded together by a separate adhesive member.

[0082] According to one embodiment, the first type protruding structures (131_t1, 132_t1, 133_t1) may be arranged on the inner side of the inner structure (120) (e.g., the second inner side (120_cv)). The first type protruding structures (131_t1, 132_t1, 133_t1) may include a curved portion (or curved surface) protruding in the z-axis direction or the -z-axis direction. According to one embodiment, the first type protruding structures (131_t1, 132_t1, 133_t1) may be formed in a semi-cylindrical shape. The above first type protruding structures (131_t1, 132_t1, 133_t1) may include, for example, a first type first protruding structure (131_t1), a first type second protruding structure (132_t1), and a first type third protruding structure (133_t1) that are spaced apart from each other at regular intervals.

[0083] According to one embodiment, the first type first protruding structure (131_t1) may be disposed in a region of the second inner portion (120_cv) covering at least a portion of the first substrate portion (141) of the printed circuit board (140) described in FIGS. 2, 4, and 5 (e.g., the substrate portion on which the first type first light-emitting element (151_t1) and the first light-receiving element (150_r1) are disposed). Alternatively, among various directions from the center (Cent_P) toward the outer structure (110), the first type first protruding structure (131_t1) may be disposed in a region of the second inner portion (120_cv) in a first direction overlapping the first type first light-emitting element (151_t1) and the first light-receiving element (150_r1) described in FIG. 2.

[0084] According to one embodiment, the first type second protruding structure (132_t1) may be disposed in a region of the second inner part (120_cv) covering at least a portion of the second substrate portion (142) of the printed circuit board (140) described in FIGS. 2, 4, and 5 (e.g., a substrate portion on which the first type second light-emitting element (152_t1) and the second light-receiving element (150_r2) are disposed). Alternatively, among various directions from the center (Cent_P) toward the outer structure (110), the first type second protruding structure (132_t1) may be disposed in a region of the second inner part (120_cv) in a second direction in which the first type second light-emitting element (152_t1) and the second light-receiving element (150_r2) described in FIG. 2 overlap.

[0085] According to one embodiment, the first type third protruding structure (133_t1) may be disposed in a region of the second inner part (120_cv) covering at least a portion (e.g., a portion of the substrate on which the second type light-emitting element (150_t2) is disposed) of the third substrate part (143) of the printed circuit board (140) described in FIGS. 2, 4, and 5. Alternatively, the first type third protruding structure (133_t1) may be disposed in a region of the second inner part (120_cv) in a third direction in which the first type third protruding structure (133_t1) overlaps with the second type light-emitting element (150_t2) described in FIG. 2 among various directions from the center (Cent_P) toward the outer structure (110). The third direction may be disposed between the first direction and the second direction. The first direction may be a direction symmetrical with respect to the second direction with respect to the third direction.

[0086] According to one embodiment, the first type first protruding structure (131_t1) and the first type second protruding structure (132_t1) may have substantially the same or similar shapes, sizes, and appearances. The first type third protruding structure (133_t1) may be formed to have a different size from the first type first protruding structure (131_t1) or the first type second protruding structure (132_t1). For example, the size of the bottom surface (e.g., the surface in contact with the second inner portion (120_cv)) of the first type third protruding structure (133_t1) may be smaller than the bottom surface size of the first type first protruding structure (131_t1) or the first type second protruding structure (132_t1). Alternatively, the circumferential length of the first type third protruding structure (133_t1) may be shorter than the circumferential length of the first type first protruding structure (131_t1) or the first type second protruding structure (132_t1).

[0087] According to one embodiment, the inner structure (120) and the first type protruding structures (131_t1, 132_t1, 133_t1) may be integrated. In this case, the area where the sensor unit (150) is arranged may include the sensor unit (150), a portion of the inner structure covering the sensor unit (150), and a portion of the protruding structure extending from the portion of the inner structure and protruding in the direction of the center (Cent_P) more than other portions of the inner structure.

[0088] As described above, the first type smart ring device (100_1) of the present disclosure may be configured such that the protrusion shapes of the first type protruding structures (131_t1, 132_t1, 133_t1) are substantially the same (e.g., the protrusion height gradually increases from the inlet to the outlet of the smart ring device (100) and then gradually decreases based on the highest point).

[0089] At least one of the first type protruding structures (131_t1, 132_t1, 133_t1) described above in FIG. 6 may have a structure as illustrated in FIG. 7. As an example, among the first type protruding structures (131_t1, 132_t1, 133_t1), the first type first protruding structure (131_t1) and the first type second protruding structure (132_t1) may have the structure of the first type protruding structure (130_nor) illustrated in FIG. 7. In the following description, the first type protruding structures (131_t1, 132_t1, 133_t1) illustrated in FIG. 6 will be referred to as the first type protruding structure (130_nor).

[0090] Referring to FIGS. 1 to 7, the first type protruding structure (130_nor) includes a bottom surface (130_bt1), a first portion (130_nor1), and a second portion (130_nor2). One side of the first portion (130_nor1) may correspond to the front surface (130_fs) of the first type protruding structure (130_nor), and one side of the second portion (130_nor2) may correspond to the back surface (130_rs) of the first type protruding structure (130_nor). The first type protruding structure (130_nor) may be provided in a half cylinder shape, as in state 701, and a cross-section along the A1-A1` cross-section line may have a rectangular shape, and a cross-section along the A2-A2` cross-section line may have a semicircular shape. The first type protruding structure (130_nor) may be formed of a rigid material, but the present disclosure is not limited thereto. For example, at least a portion of the first type protruding structure (130_nor) may be formed of an elastic material (or a flexible material).

[0091] The bottom surface (130_bt1) may include a surface that comes into contact with the second inner portion (120_cv) of the inner structure (120). Alternatively, the bottom surface (130_bt1) may include a surface that extends to the second inner portion (120_cv) of the inner structure (120). Below the bottom surface (130_bt1), a first light-receiving element region (151_r1_ar) in which a first light-receiving element (150_r1) is arranged, and a first light-emitting element region (151_t1_ar) in which a first type first light-emitting element (151_t1) is arranged may be arranged. When the above-mentioned bottom surface (130_bt1) corresponds to the first type second protruding structure (132_t1) among the first type protruding structures (131_t1, 132_t1, 133_t1), the bottom surface (130_bt1) may include a second light-emitting element area in which a first type second light-emitting element (152_t1) is arranged and a second light-receiving element area in which a second light-receiving element (150_r2) is arranged. A first light receiving element (150_r1) is arranged in the lower part of the first light receiving element area (151_r1_ar) (e.g., the first space between the inside of the inner structure (120) or the first outer part (110_cv) of the outer structure (110) and the second inner part (120_cv) of the inner structure (120)) so as to collect a signal coming from the outside of the first part (130_nor1). A first type first light emitting element (151_t1) is disposed at the lower portion of the first light emitting element region (151_t1_ar) (e.g., a second space between the first outer portion (110_cv) of the inner structure (120) or the outer structure (110) and the second inner portion (120_cv) of the inner structure (120), the second space being positioned adjacent to the first space) so that a signal (e.g., a signal of the first frequency band) can be irradiated through the second portion (130_nor2).

[0092] According to one embodiment, the upper surface of the first part (130_nor1) and the upper surface of the second part (130_nor2) may at least partially contact the outer skin of a finger when a finger is inserted into the first type smart ring device (100_1). Correspondingly, the first type first light-emitting element (151_t1) may irradiate a designated signal (e.g., a first frequency signal) to the outer skin of the finger in contact with the upper surface of the second part (130_nor2), and the first light-receiving element (150_r1) may collect a reflected signal introduced through the outer skin of the finger in contact with the upper surface of the first part (130_nor1). In this regard, the first part (130_nor1) and the second part (130_nor2) may be formed of a material having a preset transparency (e.g., a transparency of 80% or more, 90% or 95% or more). The size of the first light-receiving element region (151_r1_ar) may be different from the size of the first light-emitting element region (151_t1_ar). For example, the size of the first light-receiving element region (151_r1_ar) may be larger than the size of the first light-emitting element region (151_t1_ar).

[0093] A first partition wall (131_cw1) (e.g., a first structure partition wall (131_w) or a second structure partition wall (132_w)) may be arranged between the first part (130_nor1) and the second part (130_nor2). The first partition wall (131_cw1) may include a different material layer from the first part (130_nor1) and the second part (130_nor2). As an example, the first partition wall (131_cw1) may be formed of an opaque material. The first partition wall (131_cw1) may be formed of a flexible material or an elastic material similar to the materials of the first part (130_nor1) and the second part (130_nor2), but may have different transparency levels. The first partition wall (131_cw1) can block direct signal inflow between the first part (130_nor1) and the second part (130_nor2). As an example, the first partition wall (131_cw1) can prevent and / or reduce crosstalk that occurs when light emitted from the first type first light-emitting element (151_t1) directly enters the first part (130_nor1) through the second part (130_nor2) without passing through a finger.

[0094] The front surface (130_fs) may include one side of a first type protruding structure (130_nor). According to one embodiment, the front surface (130_fs) may be arranged to face the inlet side of the first smart ring device (100_1). As an example, a coating layer of an opaque material may be formed on the front surface (130_fs) to prevent and / or reduce light leakage to the front surface (130_fs). According to one embodiment, the corners of the front surface (130_fs) may be rounded. Alternatively, in state 702, the front surface (130_fs) is exemplified as having a structure formed vertically, but may also be formed to be inclined in the direction of the outlet side (or the z-axis direction). The front surface (130_fs) may include the same opaque material layer as the first partition wall (131_cw1).

[0095] The rear surface (130_rs) may include another surface of the first type protruding structure (130_nor). According to one embodiment, the rear surface (130_rs) may be arranged to face the outlet of the first type smart ring device (100_1). As an example, a coating layer of an opaque material may be formed on the rear surface (130_rs) similarly to the front surface (130_fs), so that light leakage to the rear surface (130_rs) may be prevented and / or reduced. According to one embodiment, the corners of the rear surface (130_rs) may be rounded similarly to the front surface (130_fs). Alternatively, in state 702, the rear surface (130_rs) is exemplified as having a structure formed vertically, but may also be formed to be inclined in the direction of the inlet (or -z-axis direction). The rear surface (130_rs) may include the same opaque material layer as the first partition wall (131_cw1).

[0096] FIG. 8 is a drawing showing an example of the appearance of a second type smart ring device according to one embodiment.

[0097] Referring to FIGS. 1 to 8, the second type smart ring device (100_2) may have substantially the same or similar structure and formation as the first type smart ring device (100_1) described above in FIG. 6, except for the arrangement of specific protruding structures. As an example, the second type smart ring device (100_2) may include an outer structure (110), an inner structure (120), and protruding structures (131_t2, 132_t2, 133_t1). The outer structure (110) may include a first outer portion (110_cv), an outer front side wall (110_fw), and an outer rear side wall (110_rw), and the inner structure (120) may include a second inner portion (120_cv). Additionally, the inner structure (120) may be arranged in at least a portion of the inner space of the outer structure (110). The outer structure (110) and the inner structure (120) described above may have the same configuration as the outer structure and the inner structure described above in FIGS. 1 to 6, and thus the description thereof may be replaced or supplemented by the content described above.

[0098] The above protruding structures (131_t2, 132_t2, 133_t1) may include a second type first protruding structure (131_t2), a second type second protruding structure (132_t2), and a third protruding structure (133_t1). Among the above protruding structures (131_t2, 132_t2, 133_t1), the third protruding structure (133_t1) may have the same shape, size, and position in the smart ring device (100) as the first type third protruding structure (133_t1) described above in FIG. 6.

[0099] The second type first protruding structure (131_t2) and the second type second protruding structure (132_t2) may have the same structure as the first type first protruding structure (131_t1) and the first type second protruding structure (132_t1) described in FIG. 6, except for the arrangement direction. As an example, the second type first protruding structure (131_t2) and the second type second protruding structure (132_t2) may have a structure substantially the same or similar to the first type protruding structure (130_nor) described in FIG. 7. Accordingly, the detailed description of the second type first protruding structure (131_t2) and the second type second protruding structure (132_t2) may be replaced with the description related to FIG. 7.

[0100] As described above, the second type smart ring device (100_2) of the present disclosure may be configured such that the protruding directions of the protruding structures (131_t2, 132_t2, 133_t1) are different from each other. For example, among the protruding structures (131_t2, 132_t2, 133_t1) included in the second type smart ring device (100_2), some of the protruding structures (e.g., the second type first protruding structure (131_t2) and the second type second protruding structure (132_t2)) may have a structure in which the protruding shape changes in the circumferential direction (e.g., a structure in which the protruding height gradually increases from a starting point of the protruding structure in the circumferential direction and then gradually decreases based on the highest point). In addition, among the protruding structures (131_t2, 132_t2, 133_t1) included in the second type smart ring device (100_2), some other protruding structures (e.g., the third protruding structure (133_t1) may be configured in a form in which the protruding shape gradually changes in the z-axis direction, as described above in FIG. 6 (e.g., a form in which the protruding height gradually increases from the inlet to the outlet of the smart ring device (100) and then gradually decreases at the highest point).

[0101] FIG. 9 is a drawing showing an example of a structure of a second type protruding structure according to an embodiment. In FIG. 9, a state 901 is a perspective view of a second type protruding structure (130_pl) that can be applied to at least one of the protruding structures arranged in a smart ring device, a state 902 is a cross-section of the second type protruding structure (130_pl) in the state drawing 901 taken along a cutting line A3-A3`, and a state 903 is a cross-section of the second type protruding structure (130_pl) in the state drawing 901 taken along a cutting line A4-A4`.

[0102] Referring to FIGS. 1 to 9, the second type protruding structure (130_pl) may include a bottom surface (130_bt2), a first portion (130_pl1), a second portion (130_pl2), a second bulkhead (130_cw2), and a first ceiling (130_cel_ft).

[0103] The above-mentioned bottom surface (130_bt2) may be formed flat. The above-mentioned bottom surface (130_bt2) may have the same or similar structure as the bottom surface described above in FIG. 6. Considering the structure in which the second type protruding structure (130_pl) is arranged to cover the first light-receiving element (e.g., the first light-receiving element (150_r1) of FIG. 2) and the first type first light-emitting element (e.g., the first type first light-emitting element (151_t1) of FIG. 2), the bottom surface (130_bt2) of the second type protruding structure (130_pl) may be formed to cover at least a portion of the first light-receiving element (e.g., the first light-receiving element (150_r1) of FIG. 2) and the first type first light-emitting element (e.g., the first type first light-emitting element (151_t1) of FIG. 2). In this regard, the bottom surface (130_bt2) may include a first light-receiving element region (151_r1_ar) covering at least a portion of the first light-receiving element (150_r1), and a first light-emitting element region (151_t1_ar) covering at least a portion of the first type first light-emitting element (151_t1). As an example, the second type protruding structure (130_pl) may be arranged to cover the second light-receiving element (e.g., the light-receiving element (150_r2) of FIG. 2) and the first type second light-emitting element (e.g., the first type second light-emitting element (152_t1) of FIG. 2). The description related to the bottom surface (130_bt2) may be replaced or supplemented by the description of the bottom surface described above in FIG. 6.

[0104] The first part (130_pl1) may be formed on a portion of the bottom surface (130_bt2). Alternatively, the first part (130_pl1) may extend in one direction from the second partition wall (130_cw2). The ceiling size of the first part (130_pl1) may be smaller than the bottom surface size of the first part (130_pl1). Correspondingly, the shape of one end of the first part (130_pl1) may include a shape in which one edge is curved, for example, as in state 902. Alternatively, one portion of the first part (130_pl1) may have a shape corresponding to one of four pieces when dividing the center of the sphere into the x-plane and the y-plane. Alternatively, at least a portion of the top of the first part (130_pl1) may be formed to be flat. A first light-receiving element (150_r1) (or a second light-receiving element (150_r2)) may be placed at the lower portion of the first part (130_pl1).

[0105] The second portion (130_pl2) may be formed on another portion of the bottom surface (130_bt2). Alternatively, the second portion (130_pl2) may extend from the second partition wall (130_cw2) in a direction different from (or opposite to) the one direction. The ceiling size of the second portion (130_pl2) may be smaller than the bottom surface size of the second portion (130_pl2). Correspondingly, the second portion (130_pl2) may include a shape in which the other end (e.g., the other end opposite to the one end of the first portion (130_pl1)) is curved, for example, as in state 902. Alternatively, at least a portion (e.g., the shape of one end) of the second portion (130_pl2) may have a shape corresponding to one of four pieces when dividing the sphere into the x-plane and the y-plane with respect to the center of the sphere. Alternatively, at least a portion of the upper portion of the second portion (130_pl2) may be formed flat, similar to the upper portion of the first portion (130_pl1). A first type first light-emitting element (151_t1) (or a first type second light-emitting element (152_t1)) may be arranged at the lower portion of the second portion (130_pl2). The size of the second portion (130_pl2) may be different from the size of the first portion (130_pl1). For example, the size of the second portion (130_pl2) may be smaller than the size of the first portion (130_pl1).

[0106] A second partition wall (130_cw2) may be arranged between the first portion (130_pl1) and the second portion (130_pl2). The second partition wall (130_cw2) may include a different material layer from the first portion (130_pl1) and the second portion (130_pl2). For example, the second partition wall (130_cw2) may be formed of the same or similar material as the first partition wall (130_cw1) described above in FIG. 6. For example, the second partition wall (130_cw2) may be formed of a similarly opaque material. Alternatively, the second partition wall (130_cw2) may be formed of a flexible material or an elastic material similar to the materials of the first portion (130_pl1) and the second portion (130_pl2), but may have different transparency levels. The description of the above second bulkhead (130_cw2) may be replaced or supplemented with the description of the above first bulkhead (130_cw1) described above in FIG. 6.

[0107] The first ceiling (130_cel_ft) may be formed flat. The width (e.g., length in the circumferential direction) of the first ceiling (130_cel_ft) may be smaller than the width (e.g., length in the circumferential direction) of the floor surface (130_bt2). Since the first ceiling (130_cel_ft) is formed flat to a certain width, the surface that comes into contact with the outer skin of the finger can be secured more than in a curved shape.

[0108] The second type protruding structure (130_pl) described in the above-described FIG. 9 can be applied to at least one of the protruding structures described in FIGS. 1, 2, 6 to 8. Alternatively, it can be applied to at least one of a plurality of protruding structures arranged in the smart ring device (100). As an example, the second type protruding structure (130_pl) can be applied to at least one of a protruding structure arranged to cover at least a portion of the first type first light-emitting element (151_t1) and the first light-receiving element (150_r1), a protruding structure arranged to cover at least a portion of the first type second light-emitting element (152_t1) and the second light-receiving element (150_r2), or a protruding structure arranged to cover at least a portion of the second type light-emitting element (150_t2).

[0109] FIG. 10 is a drawing showing an example of a structure of a third type protruding structure according to an embodiment. In FIG. 10, state 1001 is a perspective view of a third type protruding structure (130_cv) that can be applied to at least one of the protruding structures arranged in a smart ring device, state 1002 is a cross-section of the third type protruding structure (130_cv) in the state drawing of state 1001 taken along a cutting line A51-A51`, state 1003 is a cross-section of the third type protruding structure (130_cv) in the state drawing of state 1001 taken along a cutting line A52-A52`, and state 1004 is a cross-section of the third type protruding structure (130_cv) in the state drawing of state 1001 taken along a cutting line A6-A6`.

[0110] Referring to FIGS. 1 to 10, the third type protruding structure (130_cv) of FIG. 10 may have the same structure as the second type protruding structure (130_pl) described in FIG. 9, except for the first ceiling (130_cel_ft) portion. As an example, the third type protruding structure (130_cv) may include a bottom surface (130_bt3), a first portion (130_cv1), a second portion (130_cv2), a third bulkhead (130_cw3), and a second ceiling (130_cel_cv).

[0111] The above-described bottom surface (130_bt3) may be formed flat. The above-described bottom surface (130_bt3) may have the same or similar structure as the bottom surface described above in FIGS. 6 to 9. For example, the bottom surface (130_bt3) of the third type protruding structure (130_cv) may be formed to cover at least a portion of the first light-receiving element (e.g., the first light-receiving element 150_r1 of FIG. 2, hereinafter 150_r1) and the first type first light-emitting element (e.g., the first type first light-emitting element 151_t1 of FIG. 2, hereinafter 151_t1) or at least a portion of the second light-receiving element (e.g., the second light-receiving element 150_r2 of FIG. 2, hereinafter 150_r2) and the first type second light-emitting element (e.g., the first type second light-emitting element 152_t1 of FIG. 2, hereinafter 152_t1). In this regard, the bottom surface (130_bt3) may include a first light-receiving element region (151_r1_ar) covering at least a portion of the first light-receiving element (150_r1) and a first light-emitting element region (151_t1_ar) covering at least a portion of the first type first light-emitting element (151_t1). Alternatively, the bottom surface (130_bt3) may include a second light-receiving element region and a second light-emitting element region arranged to cover the second light-receiving element (150_r2) and the first type second light-emitting element (152_t1). The description related to the bottom surface (130_bt3) may be replaced or supplemented by the description of the bottom surface described above in FIG. 6 or FIG. 9.

[0112] The first part (130_cv1) may be formed on a portion of the bottom surface (130_bt3). The ceiling size of the first part (130_cv1) may be smaller than the bottom surface size of the first part (130_cv1). Correspondingly, the shape of one end of the first part (130_cv1) may include a shape in which one edge is curved, for example, as in state 1002 or state 1003. Alternatively, the upper end of the first part (130_cv1) (e.g., the second ceiling (130_cel_cv)) may include a shape engraved in the direction of the bottom surface (130_bt3). At least a portion of the engraved shape may include a curved surface. A first light-receiving element (150_r1) (or a second light-receiving element (150_r2)) may be placed at the lower portion of the first portion (130_cv1).

[0113] The second part (130_cv2) may be formed on another part of the bottom surface (130_bt3). The ceiling size of the second part (130_cv2) may be smaller than the bottom surface size of the second part (130_cv2). The second part (130_cv2) may include a shape in which the other end is curved, for example, as in the 1002 state or the 1003 state. Alternatively, at least a portion of the upper end of the second part (130_cv2) may be formed flat, similar to the upper end of the first part (130_cv1). A first type first light-emitting element (151_t1) (or a first type second light-emitting element (152_t1)) may be arranged at a lower portion of the second part (130_cv2). The size of the second portion (130_cv2) may be different from the size of the first portion (130_cv1). For example, the size of the second portion (130_cv2) may be smaller than the size of the first portion (130_cv1).

[0114] A third partition wall (130_cw3) may be arranged between the first portion (130_cv1) and the second portion (130_cv2). The third partition wall (130_cw3) may include a different material layer from the first portion (130_cv1) and the second portion (130_cv2). As an example, the third partition wall (130_cw3) may be formed of a material identical or similar to the first partition wall (130_cw1) described in FIG. 6 or the second partition wall (130_cw2) described in FIG. 9. For example, the third partition wall (130_cw3) may be similarly formed of an opaque material. Alternatively, the third partition wall (130_cw3) may be formed of a flexible material or an elastic material similar to the materials of the first portion (130_cv1) and the second portion (130_cv2), but may have different transparency. The description of the third partition wall (130_cw3) may be replaced or supplemented with the description of the first partition wall (130_cw1) described in FIG. 6 or the description of the second partition wall (130_cw2) described in FIG. 9.

[0115] The second ceiling (130_cel_cv) may include a shape engraved in the direction of the floor surface. The engraved depth of the second ceiling (130_cel_cv) may be smaller than the height of the first portion (130_cv1) or the height of the second portion (130_cv2) from the floor surface (130_bt3) toward the center (Cent_P) of the smart ring device (100). A cross-section of the engraved shape of the second ceiling (130_cel_cv) may include a curve as in state 1004. The curvature of the engraved curve in one cross-section of the second ceiling (130_cel_cv) may vary depending on the size of the smart ring device (100). As an example, the curvature of the curve of the second ceiling (130_cel_cv) may become smaller (or gentler) as the size of the smart ring device (100) increases, and may become larger as the size of the smart ring device (100) decreases.

[0116] The third type protruding structure (130_cv) described in the above-described FIG. 10 can be applied to at least one of the protruding structures described in FIGS. 1, 2, 6 to 8. Alternatively, it can be applied to at least one of a plurality of protruding structures arranged in the smart ring device (100). As an example, the third type protruding structure (130_cv) can be applied to at least one of a protruding structure arranged to cover at least a portion of the first type first light-emitting element (151_t1) and the first light-receiving element (150_r1), a protruding structure arranged to cover at least a portion of the first type second light-emitting element (152_t1) and the second light-receiving element (150_r2), or a protruding structure arranged to cover at least a portion of the second type light-emitting element (150_t2). The direction in which the third type protruding structure (130_cv) is applied to the smart ring device (100) can vary. For example, the third type protruding structure (130_cv) may be applied to the smart ring device (100) in a protruding shape (e.g., a shape in which the protruding height changes in the circumferential direction from the center (Cent_P) of the smart ring device (100)) such as the second type first protruding structure (131_t2) (or the second type second protruding structure (132_t2)) illustrated in FIG. 8, or may be applied to the smart ring device in a protruding shape (e.g., a shape in which the protruding height changes in the direction from the inlet to the outlet from the center (Cent_P) of the smart ring device (100)) such as the third protruding structure (133_t1).

[0117] FIG. 11 is a drawing showing an example of a structure of a fourth type protruding structure according to an embodiment. In FIG. 11, the state 1101 shows a perspective view of a fourth type protruding structure (130_du) that can be applied to at least one of the protruding structures arranged in a smart ring device, the state 1102 shows a cross-section of the fourth type protruding structure (130_du) cut along the A7-A7` line in the state drawing 1101, and the state 1103 shows a cross-section of the fourth type protruding structure (130_du) cut along the A81-A81` line in the state drawing 1101. The 1104 state shows a cross-section of the 4th type protruding structure (130_du) cut along the A82-A82` cutting line in the 1101 state drawing, and the 1105 state shows a cross-section of the 4th type protruding structure (130_du) cut along the A83-A83` cutting line in the 1101 state drawing.

[0118] Referring to FIGS. 1 to 11, a fourth type protruding structure (130_du) according to one embodiment may include a bottom surface (130_bt4), a first portion (130_cel1), a second portion (130_cel2), a third portion (130_cel3), and a fourth bulkhead (130_cw4).

[0119] The above-described bottom surface (130_bt4) may have a structure identical to or similar to the bottom surface described above in FIGS. 6 to 10. For example, the bottom surface (130_bt4) of the fourth type protruding structure (130_du) may include a first light-receiving element region (151_r1_ar) covering at least a portion of a first light-receiving element (e.g., the first light-receiving element 150_r1 of FIG. 2, hereinafter 150_r1) and a first type first light-emitting element region (151_t1_ar) covering at least a portion of a first type first light-emitting element (e.g., the first type first light-emitting element 151_t1 of FIG. 2, hereinafter 151_t1). The description related to this bottom surface (130_bt4) may be replaced or supplemented by the description of the bottom surface described above in FIG. 6, FIG. 9, or FIG. 10.

[0120] The first portion (130_cel1) may be formed on a portion of the bottom surface (130_bt4). The first portion (130_cel1) may, for example, include a convex shape from the bottom surface toward the center (Cent_P) of the smart ring device (100). As an example, the first portion (130_cel1) may include a shape in which the height gradually increases from the bottom surface (130_bt4) in one direction (e.g., the z-axis direction of FIG. 5) or another direction (e.g., the circumferential direction of the smart ring device (100) described in FIG. 5) and then gradually decreases from the bottom surface (130_bt4) in height based on an inflection point (or highest point). A first light-receiving element (150_r1) (or a second light-receiving element (150_r2)) may be arranged below the first portion (130_cel1). One edge of the first portion (130_cel1) can be connected to the fourth bulkhead (130_cw4).

[0121] The second part (130_cel2) may be formed on another part of the bottom surface (130_bt4). The second part (130_cel2) may, for example, have a convex shape from the bottom surface toward the center (Cent_P) of the smart ring device (100). The convex shape of the second part (130_cel2) may be the same as or similar to the convex shape of the first part (130_cel1). Alternatively, the second part (130_cel2) may be convex similarly to the first part (130_cel1), but the degree of convexity may be different. For example, the height of the highest convex point of the second part (130_cel2) may be lower than the height of the highest convex point of the first part (130_cel1). A first type first light-emitting element (151_t1) (or a first type second light-emitting element (152_t1)) may be arranged at the lower portion of the second portion (130_cel2). The second portion (130_cel2) may be connected to the first portion (130_cel1) through a fourth partition wall (130_cw4). The second portion (130_cel2) may be formed of the same material as the first portion (130_cel1).

[0122] A fourth partition wall (130_cw4) may be arranged in the third portion (130_cel3) between the first portion (130_cel1) and the second portion (130_cel2). The fourth partition wall (130_cw4) may be arranged at the boundary between the first portion (130_cel1) and the second portion (130_cel2). Alternatively, at least a portion of the fourth partition wall (130_cw4) may be positioned on a line connecting a point protruding to the highest height of the first portion (130_cel1) and a point protruding to the highest height of the second portion (130_cel2), and may be arranged in an area lower than the highest height of the first portion (130_cel1) or the highest height of the second portion (130_cel2). The fourth partition wall (130_cw4) may extend from the inlet portion of the smart ring device (100) toward the outlet portion. Alternatively, the fourth partition wall (130_cw4) may be disposed on the boundary between the first light-receiving element (150_r1) and the first type first light-emitting element (151_t1) (or the boundary between the second light-receiving element (150_r2) and the first type second light-emitting element (152_t1)). The fourth partition wall (130_cw4) may include a material layer different from the first portion (130_cel1) and the second portion (130_cel2). As an example, the fourth partition wall (130_cw4) may be formed of a flexible material or an elastic material similar to the materials of the first portion (130_cel1) and the second portion (130_cel2), but may have different transparency. The description of the third bulkhead (130_cw3) may be replaced or supplemented by the description of the first bulkhead (130_cw1) described in FIG. 6, the description of the second bulkhead (130_cw2) described in FIG. 9, or the description of the third bulkhead (130_cw3) described in FIG. 10.

[0123] As an example, a cross-section including a point (e.g., the protruding highest height) of the first part (130_cel1) shown in the 1103 state may be larger in size than a cross-section including a point (e.g., the protruding highest height) of the second part (130_cel2) shown in the 1105 state. A cross-section including a point (e.g., the protruding highest height) of the first part (130_cel1) shown in the 1103 state may be larger in size than a cross-section including a point where the fourth bulkhead (130_cw4) shown in the 1104 state is arranged. A cross-section including a point (e.g., the protruding highest height) of the second part (130_cel2) shown in the 1105 state may be larger in size than a cross-section including a point where the fourth bulkhead (130_cw4) shown in the 1104 state is arranged.

[0124] The fourth type protruding structure (130_du) described in the above-described FIG. 11 can be applied to at least one of the protruding structures described in FIGS. 1, 2, 6 to 8. Alternatively, it can be applied to at least one of a plurality of protruding structures arranged in the smart ring device (100). As an example, the fourth type protruding structure (130_du) can be applied to at least one of a protruding structure arranged to cover at least a portion of the first type first light-emitting element (151_t1) and the first light-receiving element (150_r1), a protruding structure arranged to cover at least a portion of the first type second light-emitting element (152_t1) and the second light-receiving element (150_r2), or a protruding structure arranged to cover at least a portion of the second type light-emitting element (150_t2). The direction in which the fourth type protruding structure (130_du) is applied to the smart ring device (100) can vary. For example, the fourth type protruding structure (130_du) may be applied to the smart ring device (100) in a protruding shape (e.g., a shape in which the protruding height changes in the circumferential direction from the center (Cent_P) of the smart ring device (100)) such as the second type first protruding structure (131_t2) (or the second type second protruding structure (132_t2)) illustrated in FIG. 8, or may be applied to the smart ring device in a protruding shape (e.g., a shape in which the protruding height changes in the circumferential direction from the center (Cent_P) of the smart ring device (100)) such as the third protruding structure (133_t1).

[0125] FIG. 12 is a drawing showing an example of a third type smart ring device according to one embodiment.

[0126] Referring to FIGS. 1 to 12, a third type smart ring device (100_3) according to one embodiment can be inserted into a user's finger (10).

[0127] The finger (10) may include a bone (10_bone) at least partly located in the center, an artery (10_da) located at a certain angle direction to the right or left from the center of the finger (10) (e.g., an angle range of about 50 to 70 degrees to the right or left based on an imaginary line (F_1) passing through the center of the finger (10), a nerve (10_d) located on an imaginary line (F_2) in the direction in which the artery (10_da) is located from the center of the finger (10) and is located closer to the skin than the artery (10_da), a flexor tendon (10_ft), an extensor tendon (10_et) (central slip (10_cs), lateral band (10_lb)), and a dorsal vein (10_dv).

[0128] The third type smart ring device (100_3) may include, for example, an outer structure (110) and an inner structure (120), and may include protruding structures (131_ch, 132_ch, 133) protruding from the inner side of the inner structure (120) toward the center (Cent_P) of the third type smart ring device (100_3). According to one embodiment, the third type smart ring device (100_3) may include an internal element disposed between the outer structure (110) and the inner structure (120), and the internal element may include a sensor unit (e.g., a sensor unit (150) of FIG. 2, hereinafter referred to as 150) described above. The sensor unit (150) may irradiate designated signals (e.g., a sensing signal of a first frequency band and a sensing signal of a second frequency band different from the first frequency band) toward various tissues located within the finger (10), and collect signals reflected by the skin or internal tissues of the finger (10). According to one embodiment, the sensor unit (150) may include a first light-receiving element (e.g., a first light-receiving element (150_r1) of FIG. 2), a first type first light-emitting element (e.g., a first type first light-emitting element (151_t1) of FIG. 2), a second light-receiving element (e.g., a second light-receiving element (150_r2) of FIG. 2), a first type second light-emitting element (e.g., a first type second light-emitting element (152_t1) of FIG. 2), and a second type light-emitting element (e.g., a second type light-emitting element (150_t2) of FIG. 2). Each of the above light-emitting elements and light-receiving elements may include at least one of various circuitries.

[0129] The first light-receiving element (150_r1) may be positioned between the outer structure (110) and the inner structure (120) so as to face an artery (10_da) at a location located within the finger (10). For example, the first light-receiving element (150_r1) may be positioned at a range of about 50 to 70 degrees (or 60 degrees) to the left with respect to an imaginary line (F_1) passing through the center (Cent_P) of the third type smart ring device (100_3). The second light-receiving element (150_r2) may be positioned between the outer structure (110) and the inner structure (120) so as to face an artery (10_da) at another location located within the finger (10). For example, the second light-receiving element (150_r2) may be positioned in a range of about 50 to 70 degrees (or 60 degrees) to the right (e.g., on the second virtual line (F_2) from the center (Cent_P)) based on the virtual line (F_1) passing through the center (Cent_P) of the third type smart ring device (100_3).

[0130] The first type first light-emitting element (151_t1) is configured to irradiate a signal of a short frequency band (e.g., a frequency signal corresponding to a green color wavelength) that is less than a pre-designed predetermined standard to the finger (10), and thus may be arranged adjacent to the first light-receiving element (150_r1). Similarly, the first type second light-emitting element (152_t1) is configured to irradiate a signal of a short frequency band (or a signal of the same frequency band as the first type first light-emitting element (151_t1)) that is less than a pre-designed predetermined standard to the finger (10), and thus may be arranged adjacent to the second light-receiving element (150_r2). The third type smart ring device (100_3) may also include only one first type light-emitting element and one light-receiving element.

[0131] The second type light emitting element (150_t2) may be arranged between the outer structure (110) and the inner structure (120) located on the virtual line (F_1). The second type light emitting element (150_t2) may be arranged to irradiate a signal having a longer wavelength than the frequency band irradiated by the first type first light emitting element (151_t1) (or the first type second light emitting element (152_t1)) toward the finger (10) (e.g., a frequency signal corresponding to the color red or a frequency signal corresponding to infra-red). The signal irradiated by the second type light-emitting element (150_t2) can be irradiated deeper into the finger (10) than the signal irradiated by the first type first light-emitting element (151_t1) (or the first type second light-emitting element (152_t1)) and then reflected and transmitted to the first light-receiving element (150_r1) and the second light-receiving element (150_r2).

[0132] The outer structure (110) may have a configuration identical or similar to that of the outer structure of the smart ring device described above with reference to FIGS. 1 to 8. For example, the outer structure (110) may include a first outer portion and a first inner portion, may be configured in a circular band shape, and may have at least a portion of an empty space formed therein, as described above with reference to FIGS. 1 to 8. The description of the outer structure (110) may be replaced with or supplemented by the description of the outer structure described above with reference to FIGS. 1 to 8.

[0133] The inner structure (120) may be arranged inside the outer structure (110). The inner structure (120) may come into contact with at least a portion of the outer skin of the finger (10) when the finger (10) is inserted. The inner structure (120) may include a second outer portion and a second inner portion. The inner structure (120) may be replaced with or supplemented by the description of the inner structure described above in FIGS. 1 to 8. At least one internal element may be arranged between the outer structure (110) and the inner structure (120).

[0134] According to one embodiment, a first part (131_1p_ch) of a first protruding structure (131_ch) covering an area where a first light-receiving element (e.g., a first light-receiving element (150_r1) of FIG. 2) is disposed between the outer structure (110) and the inner structure (120) may be disposed on one surface (e.g., a part of a surface facing the center (Cent_P)) of the inner structure (120), and a second part (131_2p_ch) covering an area where a first type first light-emitting element (e.g., a first type first light-emitting element (151_t1) of FIG. 2) of the first protruding structure (131_ch) is disposed. At least a portion of the first part (131_1p_ch) and the second part (131_2p_ch) may be connected to each other. According to one embodiment, on another surface of the inner structure (120) (e.g., another part of the surface facing the center (Cent_P)), a third part (132_1p_ch) of a second protruding structure (132_ch) covering an area where a second light-receiving element (e.g., a second light-receiving element (150_r2) of FIG. 2)) is arranged between the outer structure (110) and the inner structure (120) and a fourth part (132_2p_ch) covering an area where a first type second light-emitting element (e.g., a first type second light-emitting element (152_t1) of FIG. 2) of the second protruding structure (132_ch) is arranged may be arranged. At least a part of the third part (132_1p_ch) and the fourth part (132_2p_ch) may be connected to each other. Based on the virtual line (F_1), the first The portion (131_1p_ch) and the second portion (131_2p_ch) may be arranged symmetrically with the third portion (132_1p_ch) and the fourth portion (132_2p_ch). On another surface of the inner structure (120) (e.g., a portion located on an imaginary line (F_1) passing through the center (Cent_P)), a third protruding structure (133) may be arranged to cover a second type light-emitting element (e.g., the second type light-emitting element (150_t2) of FIG. 2).

[0135] As described above, the third type smart ring device (100_3) may include a first protruding structure (131_ch) including a first portion (131_1p_ch) and a second portion (131_2p_ch) that are connected to each other only at a bottom portion (or an inner surface of the inner structure (120). Alternatively, the third type smart ring device (100_3) may include a second protruding structure (132_ch) including a third portion (132_1p_ch) and a fourth portion (132_2p_ch) that are connected to each other only at a bottom portion (or an inner surface of the inner structure (120). The first protruding structure (131_ch) and the second protruding structure (132_ch) of this structure can prevent or reduce the occurrence of crosstalk by configuring the connection of the first part (131_1p_ch) and the second part (131_2p_ch) (or the third part (132_1p_ch) and the fourth part (132_2p_ch)) to be below a preset reference connection portion value, and can also prevent or reduce the formation of an air gap between the second part (131_2p_ch) (or the fourth part (132_2p_ch)) and the finger (10) by adopting a structure for contact between the second part (131_2p_ch) (or the fourth part (132_2p_ch)) covering the light-emitting element that irradiates light and the finger (10). Accordingly, the third type smart ring device (100_3) of the present invention can irradiate a larger amount of signals of the first frequency band than in a situation where there is an air gap toward the finger (10), thereby providing an environment in which a better sensor signal (signal reflected from the finger (10)) can be collected.

[0136] According to embodiments of the present disclosure, the arrangement of the light-emitting element and the light-receiving element may affect the sensor performance. For example, the green wavelength (e.g., the signal of the first type light-emitting element) mainly used to measure heart rate has a short skin penetration distance. Accordingly, the closer the light-emitting element that radiates the green wavelength is to the light-receiving element, the better the sensor performance. The red and IR wavelengths (e.g., the signal of the second type light-emitting element) used to measure oxygen saturation have a longer skin penetration depth than the green wavelength, and therefore the farther the distance from the light-receiving element is compared to the first type light-emitting element, the better the sensor performance may be. The farther the distance between the light-emitting element and the light-receiving element, the less light enters the light-receiving element. Therefore, selecting an optimal distance and an appropriate position of the light-receiving element may be necessary. For example, looking at the cross-section of a finger illustrated in FIG. 12, a large artery (10_da) is located at about 50-70 degrees from the palm. In response to this, the smart ring device of the present invention applies an arrangement in which the light receiving element is placed near the artery (10_da) so as to receive a large amount of light signals reflected from the artery. In response to this, the first type light emitting element (e.g., green LED) is placed at a close distance from the light receiving element and is configured to be located within a single protruding structure. The second type light emitting element (e.g., red / IR LED) may be placed at the center of the third type smart ring device (100_3). The separation angle between the second type light emitting element (red / IR LED) and the light receiving element is in the range of about 50 to 70 degrees (or about 60 degrees), and the light receiving element may be placed close to the artery (digital artery).

[0137] At least a portion of the shape of the protruding structure according to an embodiment of the present disclosure may include a dome shape. The protruding structure is disposed inside the smart ring device and has a convex structure. The convex shape includes a sphere and a cylinder, where the sphere has a structure in which the most convex part is in the form of a point, and the cylinder has a structure in the form of a line. In addition, the cylindrical protruding structure may have flat sides as described above in FIG. 7, but may be changed to a sphere as in FIG. 9, FIG. 10, or FIG. 11. The smart ring device has a geometrically donut-like shape, and may be circular, oval, or polygonal. The smart ring device may include a structure in which the outside is convex and the inside is concave. The shape of the protruding structure of the present disclosure may protrude more convexly than the surrounding area, or at least a portion of the part that comes into contact with the finger may be flat or concave. Since a wide surface area in contact with the body is required to reduce pain sensation, the protruding structure may have a cylindrical shape with a linear surface on the inside, a flat surface on the top, or a concave surface on the top that makes contact with the finger surface. When a concave structure is applied, the degree of concavity of the protruding structure may be determined or adjusted by considering the radius of curvature of the smart ring device. Smart ring devices may be provided in various sizes (e.g., arcs), and each arc may have a different ring size and a different tilt angle of the sensor part positioned inside. The smaller the arc of the smart ring device, the smaller the radius of curvature may be. Therefore, as the size of the smart ring device increases, the degree of concavity of the protruding structure may decrease and the degree of flatness may increase.

[0138] FIG. 13 is a block diagram of at least a portion of a configuration of a smart ring device according to one embodiment.

[0139] Each functional block of the smart ring device (100) described in FIG. 13 may correspond to at least some configurations of the smart ring device described in FIGS. 1 to 12. For example, the smart ring device (100) may include a processor (160), a memory (180), a sensor unit (150), a battery (170_bat), a power circuit (170_ic), a charging interface (170_char_if), a charging circuit (170_char_ic), an antenna (190_ant), a temperature sensor (150_temp), and an inertial sensor (150_gv). For the purpose of explanation, the configurations related to biosignal sensing are described by naming them as a sensor unit (150), but the present disclosure is not limited thereto. For example, the sensor unit (150) may also include a temperature sensor (150_temp) and an inertial sensor (150_gv).

[0140] Additionally, the smart ring device (100) may include a housing. The housing may have a shape that can be worn on a body part, such as a wrist or finger, with a hole or aperture in the center. The housing shape may have various shapes, such as a circle, a square, or a rounded square.

[0141] The housing is composed of an outer structure (or an outer ring including the outer structure, the outer part of the ring, the outer ring) and an inner structure (or an inner ring including the inner structure, the inner part of the ring, the inner ring)), and the outer structure may be composed of a material that can withstand external impacts and scratches and implement various design features, such as titanium, stainless steel, aluminum, or ceramic. Additionally or alternatively, the outer structure may further include an additional color layer or coating layer. The inner structure is a part that at least a portion of the skin of the finger comes into contact with when the smart ring device (100) is worn on the finger, and at least a portion of the inner structure may be composed of the same material as the outer structure, or a material such as a molding material for sensing, transparent plastic, or glass may be used. Alternatively, the inner structure may have a metal material for biometric measurement partially disposed thereon. In one part of the inner structure, protruding structures (or protrusions) protruding toward the center of the smart ring device (100) may be further included on the area where the sensor unit (150) is placed.

[0142] The sensor unit (150) may include at least one light-emitting element (or emitter). The at least one light-emitting element may include an element such as a lamp, an LED, a laser, or a VCSEL (vertical cavity surface emitting laser) for irradiating light onto the skin. The sensor unit (150) may include at least one sensor, and the at least one sensor may be at least one of the first type light-emitting element or the second type light-emitting element (or light-emitting elements including at least one of various circuits) described above with reference to FIGS. 1 to 12. The sensor unit (150) may include at least one light-receiving element (e.g., a receiver). The at least one light-receiving element may include an individual PD (photodiode), multiple PDs, or an image sensor (e.g., a complementary metal oxide semiconductor (CMOS)) for measuring light passing through and / or reflected from the skin. The at least one light-receiving element may be at least one of the first light-receiving element and the second light-receiving element described above. The sensor unit (150) may include an IC (integrated circuit). For example, the sensor unit (150) may include an AFE (analog front end) that drives a light-emitting element, filters and amplifies a signal collected by a light-receiving element, and converts the amplified signal into a digital signal.

[0143] The processor (160) (or a processor including at least one of various processing circuits) can calculate a corrected antioxidant value reflecting the characteristics of the sensor unit (150) by using the digital data calculated by the AFE in the sensor unit (150) together with the correction value stored in the memory (180). This antioxidant value can undergo an additional process of converting it into a standard score between 0 and 100. The processor (160) can control and process the device operation of the smart ring device (100), and can perform operation control, communication function, and input / output control of the sensor unit (150). The processor (160) can be configured as at least one of an application processor, a supplementary processor (SP) (sensor hub, MCU (micro controller unit)), a central processing unit (CPU), a neural processing unit (NPU), a graphic processing unit (GPU), and an Internet of Things (IoT) processor, or a plurality of processors (e.g., AP only, SP only, AP+SP). A plurality of processors and a communication module and a sensor unit (150) may be integrated (e.g., integrated in the form of a SoC, system on chip). The processor (160) may control at least one operation of the smart ring device (100) by executing at least some of the commands stored in the memory (180). For example, the processor (160) may correspond to a plurality of processors that divide and collectively perform a plurality of operations among the processors. Alternatively, the processor (160) illustrated in FIG. 13 may include a plurality of processors, and a specific processor or a designated processor among the plurality of processors may control a plurality of operations to be divided and collectively performed among processors other than itself (or processors including itself).

[0144] According to one embodiment, the processor (160) may control at least some of the components included in the sensor unit (150) according to a user input or preset scheduling information. As an example, when a user input, a designated period arrival, or a system request related to first biosignal collection and related function display occurs, the processor (160) may control the activation of a first type first light-emitting element (e.g., a first type first light-emitting element (151_t1) of FIG. 2) and a first type second light-emitting element (a first type second light-emitting element (152_t1) of FIG. 2) included in the sensor unit (150) to irradiate a first signal of a first frequency band to a finger. The processor (160) may perform an analysis on a signal (e.g., a signal transmitted by reflecting a first signal of a first frequency band irradiated on a finger from the inside of the finger or the skin) collected through a first light-receiving element (e.g., a first light-receiving element (150_r1) of FIG. 2) and a second light-receiving element (e.g., a second light-receiving element (150_r2) of FIG. 2). The processor (160) may output the user's first biometric information (e.g., a heart rate monitoring (HRM) signal) or corresponding information based on the first signal of the first frequency band. As an example, when the smart ring device (100) includes a display (not shown), a screen corresponding to the first biometric information may be output through the display of the smart ring device (100). Alternatively, the processor (160) may transmit the biometric information to another device (e.g., a smart phone) through a communication module (e.g., a communication module 190 of FIG. 2).

[0145] According to one embodiment, when a user input, a designated period arrival, or a system request related to the collection of a second bio-signal and display of a related function occurs, the processor (160) can activate a second type light-emitting element included in the sensor unit (150) (e.g., the second type light-emitting element (150_t2) of FIG. 2) to irradiate a second signal of a second frequency band to the finger. The processor (160) can perform an analysis on a signal collected through the first light-receiving element (150_r1) and the second light-receiving element (150_r2) (e.g., a signal transmitted by reflecting the second signal of the second frequency band irradiated to the finger from the inside of the finger or the skin). The processor (160) can output the user's second bio-information (e.g., oxygen saturation information) or information corresponding thereto based on the second signal of the second frequency band. As an example, when the smart ring device (100) includes a display, a screen corresponding to the second biometric information may be output through the display of the smart ring device (100). Alternatively, the processor (160) may transmit the second biometric information to another device (e.g., a smart phone) through the communication module (190). The processor (160) may alternately transmit the first signal of the first frequency band and the second signal of the second frequency band at regular intervals, and according to the interval, may output the signals collected by the first light-receiving element (150_r1) and the second light-receiving element (150_r2) by dividing them into first biometric information and second biometric information, respectively.

[0146] The power circuit (170_ic) can supply power stored in the battery (170_bat) to the processor (160), the light-emitting element (e.g., LED) and the light-receiving element (e.g., PD) of the sensor unit (150). The power circuit (170_ic) can include a PMIC (power management IC). The power circuit (170_ic) can be connected to a charging interface (170_char_if).

[0147] The charging interface (170_char_if) (or a charging interface including at least one of various circuits) may support wired charging (terminal, pogo pin), wireless charging (WPC (wireless power consortium), NFC (near field communication)) for charging the device. The charging interface (170_char_if) may be connected to a charging circuit (170_char_ic).

[0148] The above memory (180) can store and manage various signals related to the operation of the smart ring device (100). The memory (180) can include, for example, flash memory, NOR flash, and EEPROM (electrically erasable programmable read only). According to one embodiment, the memory (180) can store a program related to the operation of the sensor unit (150) and temporarily store signals collected by the sensor unit (150).

[0149] The battery (170_bat) may include a device that converts and stores chemical energy into electricity to power the smart ring device (100). The battery (170_bat) may be configured as a secondary battery and may be charged and discharged. The battery (170_bat) may be configured in various ways, such as lithium ion, mercury, or dry cell.

[0150] The above antenna (190_ant) may include an antenna for wireless communication. The antenna (190_ant) may include a single or multiple segmented antennas. The antenna (190_ant) may be at least a part of the housing of the smart ring device (100).

[0151] The above communication module (or a communication module including at least one of various circuits) supports transmitting and receiving control commands or data wirelessly or wiredly with an external device (e.g., a smart phone). The communication module may be configured to support Bluetooth, BLE (Bluetooth low energy), ZigBee, ANT+, Wi-Fi, Cellular (LTE, 5G, 6G, NB-IoT),

[0152] It may include at least one of NFC, RFID, UWB (ultra-wide band), and GNSS (global navigation satellite system). The communication module may be used to measure location using GNSS and wireless communication.

[0153] The above inertial sensor (150_gv) may include a sensor that detects inertia, such as an acceleration sensor or a gyroscope. The above inertial sensor (150_gv) may be equipped with only an acceleration sensor (3-axis), or may include a 6-axis sensor of acceleration and gyro. The above inertial sensor (150_gv) may sense motion, gesture, impact, posture, and activity (sedentary, moving, sports) of the smart ring device (100).

[0154] The temperature sensor (150_temp) may include a sensor that measures the temperature of a living body (e.g., a finger) or a component (e.g., a smart ring device (100). The temperature sensor (150_temp) may include a contact-type or a non-contact-type sensor depending on the method. The temperature value measured by the temperature sensor (150_temp) may be stored in the memory (180) or transmitted to the processor (160) to be used to estimate skin temperature or to estimate situational awareness and body temperature.

[0155] The configuration in FIG. 13 described above may be at least a part of the configuration of the smart ring device described in FIGS. 1 to 12. Alternatively, at least a part of the configuration in FIG. 13 may be excluded.

[0156] As described above, a smart ring device including a sensor according to an embodiment of the present disclosure includes a ring-shaped outer structure (110) (or outer portion, outer ring, outer side of the ring, outer portion of the ring (outer)), an inner structure (120) (or inner portion, inner ring, inner side of the ring, inner portion of the ring (inner)) disposed on the inner side of the outer structure, a printed circuit board (140) disposed between the outer structure and the inner structure, and a first protruding structure (131) protruding from one surface of the inner side of the inner structure toward the center of the smart ring device, wherein the printed circuit board includes a first light-receiving element (150_r1) disposed at a first position of the outer structure (e.g., a light-receiving element including a light-receiving circuit), a first type of first light-emitting element (151_t1) disposed at a second position of the outer structure and transmitting a first signal of a first frequency band (e.g., a light-emitting element including a light-emitting circuit) The first protruding structure (or protrusion) includes a first portion (131_1p) that protrudes in a first direction from the first light-emitting element toward the center of the smart ring device, and a second portion (131_2p) that is connected to the first portion and protrudes in a second direction from the first light-receiving element toward the center of the smart ring device.

[0157] According to one embodiment, the first protruding structure is characterized in that it is configured in a semi-cylindrical shape and includes a flat bottom surface, and the flat bottom surface is disposed on one surface of the inner structure.

[0158] According to one embodiment, at least a portion of the upper portion of the first protruding structure is formed flat.

[0159] In one embodiment, the highest protrusion height of the first portion and the highest protrusion height of the second portion are different.

[0160] According to one embodiment, the size of the first portion is larger than the size of the second portion.

[0161] According to one embodiment, at least a portion of the first protruding structure is characterized in that it is integrated with the inner structure.

[0162] According to one embodiment, at least a portion of the first protruding structure is formed as an injection-molded structure.

[0163] According to one embodiment, at least a portion of the first protruding structure is characterized by comprising a material having a transparency of 90% or more.

[0164] According to one embodiment, at least a portion of the first protruding structure is characterized in that it comprises an elastic material.

[0165] According to one embodiment, the smart ring device is characterized in that it further comprises a partition wall disposed between the first part and the second part.

[0166] According to one embodiment, at least a portion of the bulkhead is characterized by comprising an opaque material.

[0167] According to one embodiment, at least a portion of the bulkhead comprises an elastic material.

[0168] According to one embodiment, the smart ring device is characterized in that it further includes a second protruding structure (132) protruding from the other side of the inner portion of the inner structure toward the center of the smart ring device.

[0169] According to one embodiment, the printed circuit board is disposed at a third position of the outer structure and includes a first type second light-emitting element (152_t1) that transmits the first signal of the first frequency band and a second light-receiving element (150_r1) that is disposed at a fourth position of the outer structure and receives a signal irradiated by the second light-emitting element, and the second protruding structure is characterized in that it includes a third part (132_1p) that protrudes in a third direction from the second light-emitting element toward the center of the smart ring device, and a fourth part (132_2p) that is connected to the third part and protrudes in a fourth direction from the second light-receiving element toward the center of the smart ring device.

[0170] According to one embodiment, the first signal of the first frequency band is characterized by including a signal in the green wavelength range.

[0171] According to one embodiment, the smart ring device is characterized in that it further includes a third protruding structure protruding toward the center of the smart ring device from another side of the inner portion of the inner structure and positioned between the first protruding structure and the second protruding structure.

[0172] According to one embodiment, the printed circuit board is disposed at a fifth position of the outer structure and includes a second type third light-emitting element (150_t2) that transmits a second signal of a second frequency band different from the first frequency band, and the third protruding structure is characterized in that it protrudes in a third direction facing the center of the smart ring device from the third light-emitting element.

[0173] According to one embodiment, the second signal of the second frequency band is characterized by including a signal in the red wavelength range.

[0174] According to one embodiment, the size of the third protruding structure is characterized by being smaller than the size of the first protruding structure.

[0175] According to one embodiment, the first protruding structure and the second protruding structure are arranged symmetrically with respect to the third protruding structure.

[0176] A smart ring device according to one embodiment of the present disclosure includes a ring-shaped outer structure (or an outer portion of the ring) and an inner structure (or an inner portion of the ring), a printed circuit board having at least a portion disposed between the outer structure and the inner structure, a first protruding structure (or a protruding portion) protruding from one surface of the inner portion of the inner structure toward the center of the ring, and the first protruding structure has a first portion and a second portion disposed to cover a first light-receiving element (or a light-receiving element including a light-receiving circuit) and a first type of first light-emitting element (or a light-emitting element including a light-emitting circuit) disposed on the printed circuit board.

[0177] A smart ring device according to one embodiment of the present invention comprises: a ring-shaped outer structure (or an outer portion of the ring) and an inner structure (or an inner portion of the ring); a printed circuit board at least partially disposed between the outer structure and the inner structure; on the printed circuit board, a first light-receiving element (or a light-receiving element including a light-receiving circuit) related to detection of a biosignal in a first frequency band, a first type of first light-emitting element (or a light-emitting element including a light-emitting circuit) located within a first distance from the first light-receiving element; and a second type of light-emitting element (or a light-emitting element including a light-emitting circuit) located within a second distance longer than the first distance from the first light-receiving element and related to detection of a biosignal in a second frequency band; and a first protruding structure (or a first protruding portion) and a second protruding structure (or a second protruding portion) protruding from one surface of the inner portion of the inner structure toward the center of the ring more than the periphery, wherein the first protruding structure includes at least portions covering the first light-receiving element and the first type of first light-emitting element. A smart ring device is disclosed in which the second protruding structure is positioned to cover the second type of light-emitting element at a position spaced apart from the first protruding structure.

Claims

1. For smart ring devices, Outer structure (110); An inner structure (120) placed on the inner side of the outer structure; A printed circuit board (140) disposed between the outer structure and the inner structure; and It includes a first protruding structure (131) that protrudes toward the center from one side of the inner side of the inner structure; The above printed circuit board, A first light-receiving element (150_r1) disposed at a first position of the outer structure; and a first type of first light-emitting element (151_t1) disposed at a second position of the outer structure and transmitting a first signal of a first frequency band, The above first protruding structure is, A first portion (131_1p) protruding in a first direction facing the center from the first light-emitting element; and A smart ring device including a sensor, characterized in that it includes a second part (131_2p) connected to the first part and protruding in a second direction facing the center from the first light-receiving element.

2. In paragraph 1, The above first protruding structure is, Contains a semi-cylindrical bottom surface, A smart ring device comprising a sensor characterized in that the semi-cylindrical flat bottom surface is arranged on one surface of the inner structure.

3. In paragraph 1, A smart ring device including a sensor, wherein the upper portion of the first protruding structure is formed to be at least partially flat.

4. In paragraph 1, A smart ring device including a sensor, wherein the highest protrusion height of the first portion and the highest protrusion height of the second portion are different.

5. In paragraph 1, A smart ring device including a sensor, characterized in that the size of the first portion is larger than the size of the second portion.

6. In paragraph 1, The above first protruding structure is, A smart ring device comprising a sensor characterized in that it is integrated with the inner structure.

7. In paragraph 1, At least a portion of the first protruding structure, A smart ring device comprising a sensor characterized by including an injection structure.

8. In paragraph 1, At least a portion of the first protruding structure, A smart ring device comprising a sensor characterized by including at least one of a material having a transparency of 90% or more and an elastic material.

9. In paragraph 1, A smart ring device including a sensor, characterized in that it further includes a partition wall disposed between the first part and the second part.

10. In paragraph 9, A smart ring device comprising a sensor, characterized in that at least a portion of the bulkhead comprises at least one material selected from the group consisting of an opaque material and an elastic material.

11. In paragraph 1, A smart ring device including a sensor, characterized in that the first signal of the first frequency band includes a signal of a green wavelength band.

12. In paragraph 1, Further comprising a second protruding structure (132) protruding from the other side of the inner portion of the inner structure toward the center of the smart ring device; The above printed circuit board A second light-emitting element (152_t1) of the first type, which is positioned at the third position of the outer structure and transmits the first signal of the first frequency band; and It includes a second light-receiving element (150_r1) positioned at the fourth position of the outer structure and receiving a signal irradiated from the second light-emitting element, The above second protruding structure is, A third portion (132_1p) protruding in a third direction facing the center of the smart ring device from the second light-emitting element; A smart ring device including a sensor, characterized in that it includes a fourth part (132_2p) connected to the third part and protruding in a fourth direction facing the center of the smart ring device from the second light-receiving element.

13. In paragraph 12, Further comprising a third protruding structure protruding from another side of the inner portion of the inner structure toward the center of the smart ring and positioned between the first protruding structure and the second protruding structure; The above printed circuit board A second type third light-emitting element (150_t2) is disposed at the fifth position of the outer structure and transmits a second signal of a second frequency band different from the first frequency band, The above third protruding structure is, A smart ring device characterized in that the third light-emitting element protrudes in a third direction facing the center of the smart ring device.

14. In paragraph 13, A smart ring device including a sensor, characterized in that the second signal of the second frequency band includes a signal of a red wavelength range.

15. In paragraph 13, A sensor including a third protruding structure having a size smaller than that of the first protruding structure, A smart ring device including a sensor, characterized in that the first protruding structure and the second protruding structure are arranged symmetrically with respect to the third protruding structure.

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