TW201815345A - Optical sensor module and the wearable device thereof - Google Patents

Abstract

This invention provides an optical sensor module, which comprises a lead frame, a light-receiving unit, and at least one light-emitting unit. The lead frame includes a plate and at least one of side plate. The plate has a carrier portion and a protrusion portion protruding forward the side plate. The side plate is disposed apart from the protrusion portion. The light-receiving unit includes a photodetector disposed on a carrier surface of the carrier portion and having a light-receiving surface and a first light-blocking wall encircling the carrier portion for defining a first opening. The light-emitting unit includes a light-emitting device disposed on a mounting surface of the side plate and having a light-emitting surface and a second light-blocking wall encircling the side plate for defining a second opening. The first light-blocking wall or the second light-blocking wall encapsulates the protrusion portion. An upper surface of the protrusion portion is not lower than the light-emitting surface. This invention also provides a wearable device which has the optical sensor module stated above.

Description

Light sensor module and wearing device thereof

The invention relates to a sensor module, in particular to a light sensor module and a wearing device thereof.

Referring to FIG. 1, a photosensor module 1 for photoplethysmography (PPG) is generally commercially available, which comprises a printing having a first face 111 and a second face 112 opposite to each other. a circuit board (PCB) 11 , a light receiving member 12 disposed on the first surface 111 of the printed circuit board 11 , and two light receiving members 12 disposed on the first surface 111 of the printed circuit board 11 respectively located at the light receiving member The light-emitting members 13 on opposite sides of the 12, and a light-shielding wall 14 disposed on the first surface 111 of the printed circuit board 11 to surround the light-receiving member 12 and the light-emitting members 13.

When the photo sensor module 1 is used to measure the physiological information of a living body (not shown), the light emitting device 13 is mainly irradiated toward the living body, and then the light receiving member 12 is used. The light that penetrates or reflects in the living body is measured, thereby obtaining a desired optical signal.

However, since the material or the thickness of the light blocking wall 14 itself is not effective against the light source emitted by the light-emitting member 13, the light-receiving member 12 directly receives the light leakage transmitted through the light-blocking wall 14, and thereby The signal received by the light receiving member 12 is disturbed. In addition, due to the poor heat dissipation effect of the printed circuit board 11, the light-emitting member 13 is also likely to affect the test result due to temperature deviation.

Therefore, improving the structure of the existing photo sensor module 1 to solve the problem of light leakage and heat dissipation is a problem to be solved by those skilled in the art.

Accordingly, it is an object of the present invention to provide a photosensor module that can address light leakage and improve heat dissipation.

Therefore, the photo sensor module of the present invention comprises a lead frame, a receiving unit, and at least one light emitting unit. The lead frame includes a plate body and at least one side plate body. The plate body has a receiving portion including two oppositely disposed first sides, and at least one protruding portion that protrudes from a first side of the carrying portion toward a bearing surface of the carrying portion. The projection includes a top surface remote from the bearing surface. The side plate body is spaced apart from the first side and spaced apart from the protruding portion. The receiving unit includes a light receiving member disposed on the carrying surface and having a light receiving surface facing away from the carrying surface, and a first light blocking wall surrounding the carrying portion and defining a first opening. The first opening exposes the light receiving surface. The illuminating unit includes a illuminating member disposed on one of the side plates and having a light emitting surface facing away from the setting surface, and a second light blocking wall surrounding the side plate and defining a second opening . The second opening exposes the light exiting surface. In the present invention, the top surface of the protruding portion is not lower than the light receiving surface and the light emitting surface.

Furthermore, it is another object of the present invention to provide a wearable device comprising the photosensor module of the present invention.

Therefore, the wearing device of the present invention is suitable for being worn on a user and in contact with the skin of the user, and the energy metering volume change scanning signal, the wearing device comprises a fixing unit, a printed circuit board, and a The photo sensor module described above. The securing unit includes a housing having a transparent outer cover that is in contact with the skin of the user, and a securing portion that is coupled to the housing for attachment to the user. The printed circuit board is fixed in the casing. The photo sensor module is disposed on the printed circuit board to be electrically connected to the printed circuit board and located between the transparent outer cover and the printed circuit board.

The effect of the present invention is that the light receiving member and the light emitting member are disposed on the lead frame with good heat dissipation effect to enhance the overall heat dissipation effect, and the second light blocking wall surrounds the side plate body to effectively avoid the light emitting member. The emitted light leaks downward to the light receiving member in the first light blocking wall; furthermore, the top surface of the protruding portion is not lower than the light receiving surface, which can further prevent the emitted light from directly facing The problem of traveling up to the light receiving member and thereby reducing signal interference.

Referring to FIG. 2 to FIG. 6 , a first embodiment of the optical sensor module O of the present invention includes a lead frame L, a receiving unit 4 disposed on the lead frame L, and two wires disposed on the lead frame L. The light-emitting units 5 are located on opposite sides of the receiving unit 4.

The lead frame L includes a plate body 2 and two side plate bodies 3. The plate body 2 has a bearing portion 21, two protruding portions 22, a first folding portion 23, and a second folding portion 24. The carrying portion 21 includes two opposite first sides 211 , two opposite sides and a second side 212 respectively connected to the first sides 211 , and a first side 211 and the second sides 212 . The bearing surface 213 and a back surface 214 opposite to the bearing surface 213. Each of the projections 22 of the plate body 2 is protruded from the first side 211 of the carrier portion 21 away from the bearing surface 213. The first leg portion 23 is spaced apart from one of the two second sides 212, and the second leg portion 24 is the other of the two second sides 212 of the carrier portion 21; The first leg portion 23 and the second leg portion 24 are respectively extended in the opposite direction with the bearing portion 21 as a reference. In the embodiment, the first leg portion 23 and the second leg portion 24 are The bottom surface and the back surface 214 of the carrying portion 21 are preferably at the same level.

The side plates 3 are spaced apart from each other on the first side 211 of the carrying portion 21 of the plate body 2, and are spaced apart from the protruding portions 22 of the plate body 2, and each of the side plate bodies 3 has a setting surface 311. The setting portion 31, the third folding portion 32, and the fourth folding portion 33. The third leg portion 32 of each side plate 3 is spaced apart from the corresponding portion 31 of the side plate 3 so as to be located on the same side of the first leg portion 23 of the plate body 2, and the fourth side of each side plate body 3 The folding portion 33 is connected to the corresponding portion 31 of the plate body 2 to be located on the same side of the second folding portion 24 of the plate body 2; wherein each of the third folding portion 32 and each of the fourth folding portion 33 A bottom surface is preferably the same level. Further, in this embodiment, for the subsequent connection with a printed circuit board (PCB, not shown), the first folding portion 23, the second folding portion 24, and each of the third folding legs The bottom portion 32 and the bottom surface of each of the fourth folding leg portions 33 are preferably at the same level. The lead frame L suitable for the present embodiment is composed of a metal material. Preferably, the metal material is exemplified by copper (Cu) having good heat dissipation properties and high ductile properties.

Referring to FIG. 2 to FIG. 4, the receiving unit 4 includes a light receiving member 41 disposed on the bearing surface 213 of the carrying portion 21 and having a light receiving surface 411 facing away from the carrying surface 213. a first opening 40 and a first light blocking wall 42 that exposes the light receiving surface 411, and a first transparent encapsulant 43 covering the light receiving member 41 and covering the bearing surface 213; 3 is a partial cross-sectional view of the incomplete structure of FIG. 2. As can be seen from FIG. 3, the light receiving member 41 is disposed on the carrying portion 21 and is adjacent to the first light blocking wall 42 at an interval. It is to be noted that the light receiving member 41 suitable for the present embodiment is a detector capable of receiving and detecting a light volume change trace (PPG) signal. The shape of the first opening 40 is determined by the first light blocking wall 42. In the embodiment, the first opening 40 has a shape of the first opening 40 and has a shape. a side opening of the square shape extending toward the first leg portion 23 (see FIG. 2), that is, a portion of the first leg portion 23 is exposed to the first light blocking wall 42 The secondary opening portion is defined for electrically connecting the light receiving member 41 to the first folding portion 23.

Each of the light-emitting units 5 includes a light-emitting member 51 disposed on the installation surface 311 of the side plate 3 corresponding thereto and having a light-emitting surface 511 facing away from the installation surface 311, and a side plate 3 corresponding thereto. And covering the corresponding protrusion 22 and defining a second opening 50 and exposing the second light blocking wall 52 of the light emitting surface 511, and covering the corresponding light emitting member 51 and covering the same Corresponding to the second transparent encapsulant 53 of the setting surface 311. It is to be noted that the color of the light-emitting unit 5 and the number of the light-emitting members 51 are not particularly limited, and the light color of the light-emitting member 51 can be adjusted and the number of the light-emitting members 51 can be increased or decreased, and the first transparent package can be used. The glue 43 and the second transparent encapsulant 53 can use a light transmissive material such as an epoxy resin, an acrylic resin or a silicone rubber. In addition, according to the design consideration of the size of the light receiving member 41, the protruding portion 22 may also be covered by the first light blocking wall 42.

Referring to FIG. 4 to FIG. 6 , in detail, each of the protrusions 22 includes a top surface 221 away from the bearing surface 213 , a tilting section 222 , a connecting section 223 , and a light blocking section 224 . The angled section 222 of each of the projections 22 is a first obtuse angle with the bearing surface 213 and protrudes from the corresponding first side 211 toward the bearing surface 213 to connect the connecting section 223 corresponding thereto. The connecting portion 223 of each of the protruding portions 22 is substantially horizontally extended to the corresponding setting surface 311 of the side plate body 3 thereof to connect the corresponding light blocking portion 224, and The light blocking portion 224 of each of the protruding portions 22 extends from the corresponding connecting portion 223 of the protruding portion 22 toward the bearing surface 213 such that the top surface 221 of each of the protruding portions 22 is higher than the light emitting members 51. The light-emitting surface 511 (ie, the height A of FIG. 4 > the height B) and the light-receiving surface 411 of the light-receiving member 41 (ie, the height A of FIG. 4 > the height C). As described above, the load-bearing portion 21 forms a downset structure compared to the side plate bodies 3, in addition to effectively reducing the light-receiving surface 411 of the light-receiving member 41 to the entire photosensor module O. The height C also reduces the required height of the top surface 221 of the protrusions 22, which is advantageous for the thin design of the photo sensor module O. The fascia 22 is not less than the light-receiving surface 411 (ie, the height A ≥ the height C of FIG. 4, preferably greater than), and the protrusions 22 are adjacent to the illuminating members 51 and are matched with the carrying portion 21 The sinking structure is such that the top surface 221 of the protrusions 22 is not less than the light-emitting surface 511 (ie, the height A ≥ the height B of FIG. 4, preferably greater than), so that the light receiving member 41 can be directly received. A radiant light emitted by the illuminating members 51 is raised to enhance the overall signal-to-noise ratio (SNR) of the photo sensor module O. In addition, when the carrying portion 21 is opposite to the back surface 214 of the bearing surface 213 (see FIGS. 4 and 7 ), the first light blocking wall 42 is exposed, which helps the light receiving member 41 to dissipate heat.

In addition, the first folding portion 23, the second folding portion 24, each of the third folding portions 32, and each of the fourth folding portions 33 each have an upper portion 231, 241, 321, 331 and an extension portion 232. , 242, 322, 332, and the lower segments 233, 243, 323, 333, and each of the lower segments 233, 243, 323, 333 has a surface facing the printed circuit board (not shown) and is used for external bonding to the printing Bonding faces 234, 244, 324, 334 on the board. The upper portion 231 of the first leg portion 23 and the upper portion 241 of the second leg portion 24 extend away from the first opening 40 to connect the corresponding extensions 232, 242, the first leg portion 23 The extensions 232, 242 of the second leg portion 24 are downwardly extended from the upper segments 231, 241 to which they are connected to connect the lower segments 233, 243 corresponding thereto, the first leg portions 23 and the The lower sections 233, 243 of the second folding leg portion 24 extend from the extending portions 232, 242 of the corresponding connecting portions 192, 242 away from the first opening 40 to be externally electrically connected thereto through the corresponding bonding faces 234, 244 A printed circuit board. Preferably, in the embodiment, the bonding surfaces 234, 244, 324, 334 and the back surface 214 of the carrying portion 21 are at the same level.

Similarly, each of the third leg portion 32 and the upper portions 321 and 331 of each of the fourth leg portions 33 extend away from the corresponding second opening 50 to connect the corresponding extension portions 322 and 332, respectively. The extension portions 322 and 332 of the third folding leg portion 32 and each of the fourth folding leg portions 33 extend downward from the upper portions 321 and 331 of the corresponding connecting portions thereof to connect the lower portions 323 and 333 corresponding thereto. The lower legs 323 and 333 of the third folding leg portion 33 and the lower portions 323 and 333 of the fourth folding leg portions 33 extend from the extending portions 322 and 332 connected thereto to the second opening 50 to pass through the corresponding bonding faces 324. 334 is externally connected to the printed circuit board.

Referring to FIG. 2 and FIG. 5 simultaneously, the light receiving member 41 further has a wire 412, and each of the light emitting members 51 further has two wires 512. The wire 412 of the light receiving member 41 is connected to the upper portion 231 of the first folding portion 23 such that the light receiving member 41 passes through the first folding portion 23 and the lower portion 233 of the second folding portion 24. The bonding faces 234 and 244 of the 243 are electrically connected to the outside. The two wires 512 of the illuminating members 51 are respectively connected to the upper segment 321 of the third leg portion 32 and the upper segment 331 of the fourth leg portion 33, so that the illuminating members 51 are passed through The corresponding third folding portion 32 and the bonding surfaces 324 and 334 of the lower portions 323 and 333 of the fourth folding portion 33 are electrically connected to each other. The external electrical connection in this manner not only allows the light-receiving member 41 and the light-emitting members 51 to be electrically and independently controlled, but also further simplifies the design of the electrical circuit to be subsequently applied to a device. It is to be noted that the light receiving member 41 is electrically connected to the upper portion 231 of the first folding portion 23 by wire bonding; that is, because the wire 412 is formed. Indirectly increasing the thickness of the photo sensor module O. Therefore, the sinking structure formed by the carrying portion 21 can further reduce the height of the wire between the light receiving member 41 and the upper portion 231 of the first leg portion 23, and facilitate the thinning of the photo sensor module O. .

Referring to FIG. 2 and FIG. 6 simultaneously, the connecting portion 223 of each of the protruding portions 22 of the plate body 2 is recessed toward the first opening 40 adjacent to the first folding portion 23 and the second folding portion 24, respectively. There is a first curved surface 225, and each of the third folding portion 32 and each of the fourth folding portions 33 is further recessed toward the first opening 40 and has a second portion at a connection between one of the upper portions 321 and 331 and the extending portions 322 and 332. The curved surface 325, 335, the second curved surface 325 of the third folding leg portion 32 of the two side plate bodies 3 and the second curved surface 335 of the fourth folding leg portion 33 of the two side plate bodies 3 respectively correspond to the plate body 2 The four first curved surfaces 225. In addition, referring to FIG. 7 , in the first embodiment of the present invention, the second light blocking walls 52 are connected to each other to surround the first light blocking wall 42 and cover the first folding portion of the plate body 2 . 23 and the second folding leg portion 24, and the third folding leg portion 32 and the fourth folding leg portion 33 of each side plate body 3, so that the first folding leg portion 23 and the lower portion 233 of the second folding leg portion 24, The bonding faces 234 and 244 of the 243 and the bonding faces 324 and 334 of the third leg portion 32 and the lower portions 323 and 333 of the fourth leg portion 33 are exposed.

First, only the bonding surface 234 of the first leg portion 23, the bonding surface 244 of the second leg portion 24, and each of the third leg portions 32 are provided by the coating of the second light blocking walls 52. The bonding surface 324 and the bonding surface 334 of each of the fourth folding portions 34 are exposed, and the first folding portion 23, the second folding portion 24, the third folding portion 32, and the like can be avoided. The other portions of the lower portions 233, 243, 323, and 333 of the four-folded leg portion 33 are inadvertently contacted with the outside, thereby affecting the electrical connection of the light-receiving member 41 with the light-emitting members 51. Furthermore, in the embodiment, the back surface 214 of the carrying portion 21 is also exposed on the bottom surface of the first light blocking wall 42 , and the bottom surface of the first light blocking wall 42 and the bottom surface of the second light blocking wall 52 . Preferably, they are coplanar (same level) for subsequent electrical connection with an external circuit.

Moreover, referring to FIG. 2, FIG. 4 and FIG. 6 at the same time, it is worth mentioning that when the first light blocking wall 42 surrounds the carrying portion 21, it is a connecting portion of a portion covering each of the protruding portions 22. 223 and cover the first curved surface 225 together. The first curved surface 225 based on the plate body 2 can increase the bonding area between the first light blocking wall 42 and the plate body 2; therefore, the plate body 2 and the first light blocking wall 42 can be effectively lifted. The combined strength.

Moreover, the second light blocking walls 52 are connected to each other to surround the first light blocking wall 42; therefore, when the second light blocking walls 52 surround the corresponding side plate body 3, they are combined The second curved surfaces 325, 335 of the side plate 3 are covered, and the connecting portion 223 of the corresponding portion of the protruding portion 22 and the light blocking portion 224 are covered. Similarly, the second curved surfaces 325 and 335 of the side plates 3 can increase the bonding area between the second light blocking walls 52 and the side plates 3; therefore, the respective side plates 3 can be effectively raised. The bonding force between the second light blocking walls 52.

It is more worth mentioning that, as shown in FIG. 2 and FIG. 6 , the first light blocking wall 42 further includes a peripheral surface 426 , and the peripheral surface 426 is adjacent to the four first curved surfaces 225 of the plate body 2 . At the same time, four curved surface regions 427 which are recessed toward the first opening 40 are formed. Similarly, based on the design of the curved surface regions 427 of the first light blocking wall 42, the bonding area between the first light blocking wall 42 and each of the second light blocking walls 52 can be increased, thereby effectively improving the first The bonding force between the light blocking wall 42 and the second light blocking walls 52.

Preferably, referring to FIG. 4, the first light blocking wall 42 and each of the second light blocking walls 52 respectively have an inner circumferential surface 422, 522 defining the first opening 40 and each of the second openings 50, and a Top surfaces 421, 521. The inner peripheral surface 422 of the first light blocking wall 42 has an inclined area 423 contacting the bearing surface 213 and at an angle with the bearing surface 213, and a horizontal area extending from the inclined area 423 toward the light receiving member 41. 424, and an anti-overflow adhesive zone 425 extending from the horizontal zone 424 toward the bearing surface 213 and connected to the top surface 421. The inner peripheral surface 522 of each of the second light blocking walls 52 has an inclined portion 523 contacting the corresponding setting surface 311 and at an angle with the setting surface 311, and the inclined portion 523 is opposite to the corresponding portion The horizontal portion 524 of the light-emitting member 51 extends, and an anti-overflow adhesive region 525 extending from the horizontal portion 524 to the corresponding setting surface 311 thereof to be connected to the top surface 521. In other words, the first light blocking wall 42 and the inner circumferential surfaces 422, 522 of the second light blocking walls 52 are corresponding to the inclined regions 423, 523, the horizontal regions 424, 524, and the overflow prevention The first transparent opening 43 and the second transparent encapsulant 53 are alternately filled into the first opening 40. And the second openings 50, thereby reducing the crosstalk of the light receiving member 41 and the light emitting members 51 due to the overflow problem; that is, signal interference. It should be noted that the normal line (not shown) of one of the light receiving members 41 at the edge of the light receiving surface 411 and the first light blocking wall 42 are connected to the edge of the light receiving surface 411. The angle between the connecting lines (not shown) of a top edge of the overflow area 425 is 50-70 degrees (preferably 60 degrees); and one of the illuminating members 51 is at the normal of the edge of the light-emitting surface 511. An angle (not shown) between a connecting line (not shown) of a top edge of the anti-overfill region 525 of the second light blocking wall 52 connected to the edge of the light-emitting surface 511 is 50-70 degrees. (preferably 60 degrees).

It should be noted that, in this embodiment, the top surface 421 of the first light blocking wall 42 is higher than the top surface 521 of the second light blocking walls 52. Therefore, the light receiving member 41 can be further prevented from receiving the emitted light and other stray light directly emitted by the light emitting members 51. The material of the first light blocking wall 42 and the second light blocking walls 52, which are suitable for the present embodiment, mainly selects a light absorbing material or a light reflecting material, and the first light blocking wall 42 and the second blocking block The material and color used for the light wall 52 may be the same or different, and are not particularly limited. In other words, since the first light blocking wall 42 surrounds the light receiving member 41. Therefore, the first light blocking wall 42 is composed of a first black opaque plastic, thereby preventing the light receiving member 41 from receiving stray light from the outside. Each of the second light blocking walls 52 is around the corresponding light emitting member 51. Therefore, each of the second light blocking walls 52 is formed by a second black opaque plastic or a white opaque plastic, thereby improving the light extraction efficiency of each of the illuminating members 51 and improving the overall photosensor module O. Signal ratio.

Further, since the inclined section 523 of the inner peripheral surface 522 of each of the second light blocking walls 52 is for reflecting the emitted light of each of the light-emitting members 51. Therefore, preferably, the angle between the inclined area 523 of the inner peripheral surface 522 of each second light blocking wall 52 and the setting surface 311 is a second obtuse angle, and the second obtuse angle is between 115° and The inner peripheral surface 522 of each of the second light blocking walls 52 and the setting surface 311 together form a reflecting cup pattern, so that the light emitting member 51 surrounded by the light emitting member 51 can further improve its luminous efficiency. Similarly, the inner peripheral surface 422 of the first light blocking wall 42 can also form a reflecting cup with the supporting surface 213, so that the light receiving member 41 can improve the light collecting efficiency.

Referring to FIG. 8 and FIG. 9, a second embodiment of the optical sensor module O of the present invention is substantially the same as the first embodiment, except that the first light blocking wall 42 of the second embodiment is The second light blocking walls 52 are of the same material and are integrally formed to surround the bearing portion 21 and the side plate bodies 3, wherein the bonding surfaces 234, 244, 324 of the same level are 334 and the back surface 214 of the carrying portion 21 are exposed on a bottom surface of the integrally formed light blocking wall.

Referring to FIG. 10 and FIG. 11 , a third embodiment of the photo sensor module O of the present invention is substantially the same as the first embodiment, except that the light emitting units 5 are located on the same side of the receiving unit 4 . And only one of the protrusions 22 is located at the intersection of the light emitting unit 5 and the receiving unit 4. Specifically, the two side plates 3 are spaced apart from each other, and one of the side plates 3 of the two side plates 3 is interposed between the protruding portion 22 and the other side plate 3 of the two side plates 3, respectively. The second light blocking wall 52 of the light emitting unit 5 surrounds the side plate body 3 corresponding thereto and is engaged with each other.

In order to more clearly illustrate the connection relationship between the components of the photosensor module O of the embodiments of the present invention, the following is a description of a manufacturing process of the first embodiment. The manufacturing process is roughly as shown in FIG. 12 to FIG. 17, and includes a first punching step, a trimming forming step, a first light blocking wall forming step, and a second light blocking wall forming step. A step, a component setting step, an encapsulating step, and a second punching step.

First, the punching step is to prepare a metal piece M made of a metal such as copper, and the metal piece M is punched out by a punching die (not shown) to form a plane structure of a lead frame. (As shown in Figure 12).

Further, the press forming step is to press-form the metal piece M having the planar structure P of the lead frame out of the structure of the lead frame L (shown in FIG. 13).

Then, the first light blocking wall forming step and the second light blocking wall forming step are as shown in FIG. 14 and FIG. 15 , and sequentially forming the surrounding portion of the supporting portion 21 and covering the portion by a secondary injection molding method Extending the upper portion 231 of the first leg portion 23 to form the first light blocking wall 42 of the first opening 40, and forming a connection with each other to surround the first light blocking wall 42 and let The upper portion 321 of the third lead portion 32 and the upper portion 331 of the fourth lead portion 33 are exposed to form the second light blocking walls 52 of the second openings 50.

Referring to FIG. 15 and FIG. 16 at the same time, the component setting step is to fix the light-receiving member 41 and each of the light-emitting members 51 on the bearing surface 213 and each of the setting surfaces 311, and through the wire bonding method, the wire 412 and Each of the two wires 512 electrically connects the light receiving member 41 to the upper portion 231 of the first folding portion 23, and electrically connects the respective light emitting members 51 to the upper portion 321 and the fourth portion of each of the third folding portions 32. The upper section 331 of the foot 33.

Subsequently, as shown in FIG. 17 , the first sealing opening 40 and the second transparent opening 50 respectively fill the first transparent encapsulant 43 and each of the second transparent encapsulants 53 to respectively cover the light. The receiving member 41 and each of the illuminating members 51. Finally, the second blanking step is to break the remaining portion of the metal sheet M at the periphery of the second light blocking walls 52 to obtain the photo sensor module O as shown in FIG.

It should be noted that, in the manufacturing process of the second embodiment, it is substantially the same as the manufacturing process of the first embodiment, and the difference is that the first light blocking wall 42 of the second embodiment is different. The second light blocking wall 52 is formed simultaneously in one shot molding.

For the detailed description of the above paragraphs, and referring to FIG. 2 and FIG. 4 simultaneously, when the optical sensor module O of the first embodiment of the present invention is to be electrically connected to the printed circuit board (not shown), The bonding surfaces 234 and 244 of the first folding portion 23 and the second folding portion 24 and the bonding surfaces 324 and 334 of the third folding portion 32 and the fourth folding portion 33 are electrically connected. A plurality of solder joints connected to the printed circuit board are electrically connected to lines inside the printed circuit board. At this time, since the carrying portion 21 forms the sinking structure and the first light blocking wall 42 exposes the back surface 214 of the carrying portion 21. Therefore, the back surface 214 of the carrying portion 21 can directly contact the surface of the printed circuit board, thereby improving the heat dissipation effect of the light receiving member 41 and avoiding signal shift. In addition, since the light-emitting members 51 are respectively disposed on the mounting portions 311 made of the metal material, the heat dissipation problem of the light-emitting members 51 can be effectively solved. In addition, as shown in FIG. 5, each of the third folding leg portions 32 and each of the fourth folding leg portions 33 has a bent structure; that is, each of the upper segments 321 and 331 and the respective extending portions 322 and 332 that are engaged with each other. And each of the lower sections 323, 333. Therefore, when the photo sensor module O of the embodiments of the present invention is disposed on the printed circuit board, the illuminating members 51 can be moved away from the surface of the printed circuit board to be closer to an object to be tested ( The figure is not shown to allow the light receiving member 41 to more efficiently receive the light reflected from the object to be tested.

Referring to FIG. 18, an embodiment of the wearable device 6 of the present invention is described by taking the first embodiment as an example, but is not limited thereto. The wearable device 6 is adapted to be worn on a user (not shown) to be in contact with the skin of the user, and an energy metering volume change trace (PPG) signal. The wearing device 6 includes a fixing unit 61, the printed circuit board (not shown), and the photo sensor module O disposed on the printed circuit board to be electrically connected to the printed circuit board.

The fixing unit 61 includes a cover 611 having a transparent outer cover 610 which is in contact with the skin of the user, and a fixing portion 612 which is coupled to the cover 611 and can be attached to the user. Specifically, the aspect of the casing 611 and the fixing portion 612 is not particularly limited, and the present invention is to design the fixing unit 61 as a watch or a wristband. Therefore, the fixing portions 612 are respectively extended from the opposite ends of the casing 611 into an arc shape and can be attached to the wrist of the user. The printed circuit board is fixed in the casing 611, and the manner of fixing the printed circuit board is not particularly limited as long as it can be fixed in the casing 611. Preferably, the printed circuit board of the present invention is fixed in the casing 611 parallel to the transparent outer cover 610.

Referring to FIG. 18 and FIG. 4, in detail, after the photo sensor module O is electrically connected to the printed circuit board, and is applied to the wearable device 6 for use by the user, the main The radiation emitted by the light-emitting members 51 is incident on the micro-vessels of the subcutaneous tissue of the user and is reflected to the receiving unit 4, that is, the change of the radiation light in the blood vessel is affected by the blood flow pulsation. The light receiving member 41 receives and converts into an electrical signal. Taking the pulse measurement as an example, since the blood flow per unit area of the blood vessel changes with the beat of the heart, the energy absorbed by the light receiving member 41 also changes with the amount of blood, and the corresponding pulse can be obtained. Physiological signal. The top surface 421 of the first light blocking wall 42 is higher than the top surface 521 of the second light blocking walls 52, and the protruding portions 22 between the light receiving member 41 and the light emitting members 51 are located. The top surface 221 is higher than the light receiving surface 411 and the light emitting surfaces 511. Therefore, the light receiving member 41 can more efficiently receive the light signals reflected from the blood vessels in the skin to avoid interference caused by directly receiving the emitted light from the light emitting members 51.

In summary, the light-receiving member 41 and the light-emitting members 51 of the photosensor module O of the present invention are respectively disposed on the lead frame L with good heat dissipation effect, and are passed through the sinking structure of the carrying portion 21 to The back surface 214 is exposed outside the first light blocking wall 42 and contacts the printed circuit board, in addition to effectively improving the overall heat dissipation effect, thereby avoiding the problem of signal offset caused by poor heat dissipation of the light receiving member 41, and can also reduce The height of the wire 412 of the light-receiving member 41 is increased; and the top surface 221 of each of the protrusions 22 is not lower than the light-receiving surface 411 and the light-emitting surface 511, thereby effectively preventing the horizontal light of each of the light-emitting members 51 from being directly emitted. To the light-receiving member 41, the first light-blocking wall 42 and each of the second light-blocking walls 52 respectively surround the carrying portion 21 and the side plate bodies 3, and the radiation of the light-emitting members 51 is prevented from leaking to the lower side. The light receiving member 41 in the first light blocking wall 42 and the top surface 421 of the first light blocking wall 42 are higher than the top surface 521 of each of the second light blocking walls 52, further preventing the emitted light of each of the light emitting members 51 Directly moving upward to the light receiving member 41, thereby reducing the problem of signal interference, so that the object of the present invention can be achieved .

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧ board
4‧‧‧ Receiving unit
21‧‧‧Loading Department
40‧‧‧ first opening
211‧‧‧ first side
41‧‧‧Light receiving parts
212‧‧‧ second side
411‧‧‧ Receiving surface
213‧‧‧ bearing surface
412‧‧‧ wire
214‧‧‧ back
42‧‧‧First light barrier
22‧‧‧Protruding
421‧‧‧ top surface
221‧‧‧ top surface
422‧‧‧ inner circumference
222‧‧‧Dip section
423‧‧‧Sloping area
223‧‧‧Connection section
424‧‧‧ horizontal area
224‧‧‧Light blocking section
425‧‧‧Anti-overflow zone
225‧‧‧First surface
426‧‧‧ peripheral surface
23‧‧‧First leg
427‧‧‧Surface
231‧‧‧上上
43‧‧‧First transparent encapsulant
232‧‧‧Extension
5‧‧‧Lighting unit
233‧‧‧ lower section
50‧‧‧second opening
234‧‧‧bonded surface
51‧‧‧Lighting parts
24‧‧‧Second fold
511‧‧‧Glossy
241‧‧‧上段
512‧‧‧ wire
242‧‧‧Extension
52‧‧‧Second light barrier
243‧‧‧ lower section
521‧‧‧ top surface
244‧‧‧bonding surface
522‧‧‧ inner circumference
3‧‧‧ side plate
523‧‧‧Sloping area
31‧‧‧Setting Department
524‧‧‧Horizontal area
311‧‧‧Setting surface
525‧‧‧Anti-overflow zone
32‧‧‧ Third leg
53‧‧‧Second transparent encapsulant
321‧‧‧上段
6‧‧‧Wearing device
322‧‧‧Extension
61‧‧‧Fixed unit
323‧‧‧ lower section
610‧‧‧Transparent cover
324‧‧‧ Bonding surface
611‧‧‧Shell
325‧‧‧Second surface
612‧‧‧ Fixed Department
33‧‧‧Fourth foot
A‧‧‧ Height
331‧‧‧上段
B‧‧‧ Height
331‧‧‧上段
C‧‧‧ Height
332‧‧‧Extension
L‧‧‧ lead frame
333‧‧‧ lower section
M‧‧‧metal piece
334‧‧‧bonding surface
O‧‧‧Light Sensor Module
335‧‧‧Second surface
Plane structure of P‧‧‧ lead frame

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a partial cross-sectional view of a conventional photosensor module; FIG. 2 is a photosensor of the present invention. 3 is a perspective view of a first embodiment of the module; FIG. 3 is an incomplete perspective view taken along line III-III of FIG. 2; FIG. 4 is a partial cross-sectional view taken along line IV-IV of FIG. 5 is a perspective view of a lead frame of the first embodiment of the present invention; FIG. 6 is a plan view of FIG. 5, illustrating a top view of the lead frame of the present invention; FIG. 7 is a bottom view of FIG. FIG. 8 is a partial cross-sectional view and a corresponding bottom view of a second embodiment of the optical sensor module of the present invention; FIG. 10 is a first embodiment of the optical sensor module of the present invention. FIG. 11 is a partial cross-sectional view taken along line XI-XI of FIG. 10; FIG. 12 to FIG. 17 are perspective views showing the flow of the first embodiment; and FIG. 18 is a view of the wearing device of the present invention. Stereo picture.

Claims (13)

A light sensor module comprising: a lead frame comprising a plate body and at least one side plate body, the plate body having a bearing portion including two oppositely disposed first sides, and at least one of the bearing portions a protruding portion of the first side facing away from the bearing surface of the bearing portion, the protruding portion includes a top surface away from the bearing surface, the side plate body is spaced apart on the first side and is opposite to The receiving portion is spaced apart; a receiving unit includes a light receiving member disposed on the carrying surface and having a light receiving surface facing away from the carrying surface, and a receiving portion defining the first opening a first light blocking wall, the first opening is exposed to the light receiving surface; and the at least one light emitting unit comprises a light emitting member disposed on one of the side plate bodies and having a light emitting surface facing away from the setting surface, And a second light blocking wall surrounding the side plate and defining a second opening, wherein the second opening exposes the light emitting surface; wherein the top surface of the protruding portion is not lower than the light receiving surface and the Glossy. The light sensor module of claim 1, wherein the protruding portion further comprises a tilting section, a connecting section and a light blocking section, the angled section is an obtuse angle with the bearing surface and The first side protrudes away from the bearing surface to connect the connecting section, and the connecting section extends substantially horizontally from the inclined section to the setting surface of the side panel to connect the light blocking section, wherein the light blocking section is The connecting portion extends away from the bearing surface, so that the light receiving surface of the light receiving member disposed on the bearing surface is not higher than the light emitting surface of the light emitting member, and the first light blocking wall is exposed to the bearing portion The opposite side of the bearing surface is opposite to the receiving surface and the top surface of the protruding portion is higher than the light receiving surface and the light emitting surface. The photo sensor module of claim 1, wherein the board body further has a first folding leg portion and a second folding leg portion, and the carrying portion of the plate body further comprises two opposite arrangements Connecting the second side of the first side, the first leg portion is spaced apart from the second side, and the second leg portion is coupled to the second side of the carrying portion The other side; the side plate body has a setting portion including the setting surface, a third folding portion and a fourth folding portion, and the third folding portion of the side plate body is spaced apart from the setting portion The fourth leg portion of the side plate body is connected to the setting portion to be located on the same side of the second folding leg portion of the plate body. The photo sensor module of claim 3, wherein the first leg portion and the second leg portion each have an upper segment, an extended segment and a lower segment, and the third folding portion has The fourth leg portion has an upper segment, an extension segment and a lower segment; wherein the first leg portion and the upper portion of the second leg portion extend away from the first opening to connect the corresponding portion An extension portion, the extension portion of the first folding portion and the second folding portion extend downward from the upper portion of the corresponding connection to connect the lower portion corresponding thereto, the first folding portion and the second portion The lower section of the folding leg portion extends from the extending portion of the corresponding connecting portion toward the first opening to be electrically connected to the first opening; wherein the third folding leg portion and the upper portion of the fourth folding leg portion are facing away from the first portion The second opening extends to connect the corresponding extension portion, and the extension portion of the third folding portion and the fourth folding portion extend downward from the upper portion of the corresponding connection to connect the lower portion corresponding thereto. The third folding leg portion and the lower portion of the fourth folding leg portion are opposite to the second opening from the extension portion of the corresponding connecting portion thereof Extending the external electrical connection; and wherein the light receiving member is electrically connected to the second folding portion via the first folding portion, and the light emitting member is connected to the fourth folding portion and the fourth folding portion The external power connection. The photo sensor module of claim 4, wherein the second light blocking wall is connected to surround the first light blocking wall and cover the first folding portion of the plate body and the a second folding leg portion, and the third folding leg portion and the fourth folding leg portion of the side plate body, so that a bonding surface of the lower portion of the first folding leg portion and the second folding leg portion A bonding surface of the three-folded foot portion and the lower portion of the fourth folding foot portion is exposed. The photo sensor module of claim 4, wherein the connecting portion of the protruding portion of the plate body is adjacent to the first folding portion and the second folding portion respectively A first curved surface is recessed in an opening, and the third folding portion and the fourth folding portion are respectively recessed toward the first opening and have a second curved surface at a joint between the upper portion and the extending portion, and the side plate body is The second curved surface of the third folding leg portion and the second curved surface of the fourth folding leg portion respectively correspond to the two first curved surfaces facing the plate body. The photosensor module of claim 1, wherein the first light blocking wall and the second light blocking wall respectively have an inner peripheral surface defining the first opening and the second opening, The inner mask of the first light blocking wall has an inclined area contacting the bearing surface and sandwiching the bearing surface, a horizontal area extending from the inclined area toward the light receiving member, and a horizontal area An anti-overflow rubber area extending away from the bearing surface; the inner peripheral mask of the second light blocking wall has an inclined area contacting the corresponding setting surface and at an angle with the setting surface, and the back surface is backed by the inclined area a horizontal zone extending toward the illuminating member, and an anti-overflow zone extending from the horizontal zone toward the setting surface. The photo sensor module of claim 1, wherein the receiving unit further comprises a first transparent encapsulant covering the light receiving member and covering the carrying surface, the light emitting unit further comprising a covering The illuminating member covers the second transparent encapsulant of the setting surface. The photo sensor module of claim 1, wherein the first light blocking wall is formed by a first black opaque plastic, and the second light blocking wall is formed by a second black Light-transmissive plastic or a white opaque plastic. The photo sensor module of claim 1, comprising two light emitting units, the lead frame comprising two side plate bodies, wherein the two side plate bodies are spaced apart from each other, and one side plate body of the two side plate bodies Between the protruding portion and the other side plate of the two side plates, the light-emitting members of the light-emitting units are disposed on the setting surface of the corresponding side plate body, and the second light-blocking wall of each light-emitting unit The surrounding side plates are connected and connected to each other, and the first light blocking wall is surrounded and covered. The photo sensor module according to any one of claims 1 to 10, wherein one of the first light blocking wall and the second light blocking wall covers the protruding portion, and the first A top surface of a light blocking wall is not lower than a top surface of the second light blocking wall. A wearable device is adapted to be worn on a user and in contact with the skin of the user, and the energy metering volume change trace signal, the wearable device comprising: a fixed unit, including a device capable of interacting with the user a cover of the transparent cover that is in contact with the skin, and a fixing portion that can be attached to the user to connect the cover; a printed circuit board fixed in the cover; and The photo sensor module according to any one of the preceding claims, wherein the photosensor module is disposed on the printed circuit board to be electrically connected to the printed circuit board and located between the transparent outer cover and the printed circuit board. The wearing device of claim 12, wherein the protruding portion is covered by one of the first light blocking wall and the second light blocking wall, and one of the first light blocking walls The top surface is not lower than a top surface of the second light blocking wall.