CN217981943U

CN217981943U - Transmitting end subassembly and photoelectric coupling device

Info

Publication number: CN217981943U
Application number: CN202222475830.2U
Authority: CN
Inventors: 蒋金元; 何凌波
Original assignee: Shenzhen Jucan Microelectronics Technology Co ltd
Current assignee: Shenzhen Jucan Microelectronics Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2022-12-06
Anticipated expiration: 2032-09-19

Abstract

The embodiment of the utility model provides a transmitting end subassembly, photoelectric coupling device and packaging method thereof, the transmitting end subassembly includes first casing unit, transmitting end unit and first encapsulation unit, the first casing unit includes first casing body and first circuit unit; the first circuit unit comprises a first connecting unit and a second connecting unit; the transmitting end unit comprises at least one transmitting end element, and a connecting end of the first connecting unit and a connecting end of the second connecting unit are arranged on the inner surface of the top of the first shell body and are connected with the transmitting end element arranged on the surface; the other connecting end of the first connecting unit and the other connecting end of the second connecting unit extend out of the transmitting end assembly or are arranged on the outer surface of the first shell body; the first packaging unit is positioned in the groove and covers the emitting end element and is used for transmitting the light emitted by the emitting end element to the first opening end of the first groove. The technical problem that the existing photoelectric coupling device is not perfect is solved.

Description

Transmitting end subassembly and photoelectric coupling device

Technical Field

The utility model relates to an electron field especially relates to a transmitting terminal subassembly and optoelectronic coupling device.

Background

The photoelectric coupler is a photoelectric conversion device for transmitting an electric signal using light as a medium, and is widely used in various circuits. The existing photoelectric coupler has the defects of rough packaging mode, low reliability, low air tightness, short service life and the like.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a pair of transmitting end subassembly and optoelectronic coupling device solves the technical problem that current optoelectronic coupling device is not perfect enough.

In order to solve the above technical problem, an embodiment of the present invention provides a transmitting end assembly, which is adapted to a receiving end assembly to obtain a photoelectric coupling device, where the transmitting end assembly includes a first housing unit, a transmitting end unit, and a first packaging unit;

the first housing unit having a shape that fits inside of a second housing unit in the receiving end assembly, the first housing unit including a first housing body and a first circuit unit; the first shell body comprises a first side part and a first top part, the first shell body is provided with a first groove, the first side part and the first top part surround to form the first groove, and the first groove is provided with a first opening end opposite to the first top part and a first bottom end opposite to the first opening end; the first circuit unit comprises at least one first connecting unit and at least one second connecting unit; the first connecting unit comprises a first connecting end, a second connecting end and a third connecting end connected between the first connecting end and the second connecting end; the second connecting unit comprises a fourth connecting end, a fifth connecting end and a sixth connecting end connected between the fourth connecting end and the fifth connecting end;

the emitter end unit comprises at least one emitter end element mounted to an inner surface of the first top portion;

the first connecting end and the fourth connecting end are arranged on the inner surface of the first top, the first connecting end is connected with the first electrode of the transmitting end element, and the fourth connecting end is connected with the second electrode of the transmitting end element;

the second connecting end and the fifth connecting end extend out of the transmitting end component or are arranged on the outer surface of the first shell body; the circuit is used for being connected with the receiving end assembly;

the first packaging unit is positioned in the first groove, covers the emission end element and is used for transmitting the light emitted by the emission end element to the first opening end of the first groove.

In order to solve the above technical problem, an embodiment of the present invention further provides a photoelectric coupling device, including any one of the above transmitting end assemblies, and further including a receiving end assembly, a second encapsulating unit, a third encapsulating unit, and a fourth encapsulating unit, wherein,

the receiving end assembly comprises a second shell unit and a receiving end unit;

the second housing unit includes a second housing body, a second circuit unit, and a third circuit unit;

the second shell body comprises a second side part and a second bottom part, the second shell body is provided with a second groove, the second side part and the second bottom part surround to form the second groove, and the second groove is provided with a second opening end opposite to the second bottom part and a second bottom end opposite to the second opening end;

the second circuit unit comprises at least one fifth connection unit and at least one sixth connection unit, wherein the fifth connection unit comprises a seventh connection end, an eighth connection end and a ninth connection end connected between the seventh connection end and the eighth connection end; the sixth connecting unit comprises a tenth connecting end, an eleventh connecting end and a twelfth connecting end connected between the tenth connecting end and the eleventh connecting end;

the third circuit unit comprises at least one seventh connecting unit and at least one eighth connecting unit, the seventh connecting unit comprises a thirteenth connecting end, a fourteenth connecting end and a fifteenth connecting end connected between the thirteenth connecting end and the fourteenth connecting end; the eighth connecting unit comprises a sixteenth connecting end, a seventeenth connecting end and an eighteenth connecting end connected between the sixteenth connecting end and the seventeenth connecting end;

the receiving end unit comprises at least one receiving end element which is arranged on the inner surface of the second bottom part;

the seventh connecting end and the tenth connecting end are arranged on the inner surface of the second bottom, the seventh connecting end is connected with the third electrode of the receiving end element, and the tenth connecting end is connected with the fourth electrode of the receiving end element; the eighth connecting end and the eleventh connecting end extend out of the photoelectric coupling device or are arranged on the outer surface of the second shell body and are used for being connected with a circuit outside the photoelectric coupling device;

the thirteenth connecting end and the sixteenth connecting end are arranged on the inner surface of the second bottom, the thirteenth connecting end is connected with the second connecting end in the transmitting end component, and the sixteenth connecting end is connected with the fifth connecting end in the transmitting end component; the fourteenth connecting end and the seventeenth connecting end extend out of the photoelectric coupling device or are arranged on the outer surface of the second shell body and are used for being connected with a circuit outside the photoelectric coupling device;

the transmitting end assembly is arranged in the second groove, and a first opening end of a first groove in the transmitting end assembly faces to the inner surface of the second bottom and is aligned with the receiving end unit;

the second packaging unit is positioned between the receiving end component and the first packaging unit in the transmitting end component and is used for transmitting the light transmitted by the first packaging unit to the receiving end component;

the third packaging unit is positioned in the second groove and covers the transmitting end assembly and the inner surface of the second bottom;

the fourth packaging unit is a light-tight unit and covers the third packaging unit; or cover the third encapsulation unit and extend to an outer surface of the second case body except for the eighth connection end, the eleventh connection end, the fourteenth connection end, and the seventeenth connection end.

Advantageous effects

The embodiment of the utility model provides a transmitting terminal subassembly and optoelectronic coupling device, the transmitting terminal subassembly carries out the adaptation installation with the receiving terminal subassembly and obtains optoelectronic coupling device, wherein the transmitting terminal subassembly includes first housing unit, the transmitting terminal unit, and first encapsulation unit, first housing unit is provided with first recess, the transmitting terminal unit, first encapsulation unit sets up in first recess, and the transmitting terminal component in the first encapsulation unit covers the transmitting terminal unit, transmit the first open end transmission of light to first recess of transmitting terminal component transmission. The transmitting end assembly provided by the embodiment of the utility model comprises a transmitting end element, a first shell unit and a first packaging unit, wherein the distance between the transmitting end element and a receiving end element can be controlled by the height of the first shell unit and the depth of the first groove; the first shell unit, the first packaging unit and the transmitting end element form an independent device together, and the first shell unit and the first packaging unit can play a role in fixing and protecting the transmitting end element, so that the reliability, the air tightness, the service life and the like of the transmitting end are improved; meanwhile, the first shell unit, the first packaging unit and the transmitting end element form an independent device, and the device is convenient to be adaptively installed, updated and replaced with a receiving end assembly; the first shell unit has a shape matched with the interior of the second shell unit in the receiving end assembly, so that the transmitting end assembly is conveniently installed in the second groove of the receiving end assembly, the transmitting end assembly is further protected through the second shell unit of the receiving end assembly, light leakage is avoided, and meanwhile, the structure of the photoelectric coupling device is more stable and firm.

Furthermore, the first groove is cylindrical or conical, the first bottom end and the first open end of the first groove are planes parallel to each other, the diameter of the first bottom end of the first groove is smaller than that of the first open end, and the shape design of the first groove can help to gather the light emitted by the emitting end element to the first open end of the first groove.

Furthermore, the distance from the first packaging unit to the first opening end of the first groove is larger than a preset distance value, the preset distance value can be determined according to the height of a receiving end unit in the receiving end assembly, damage to the receiving end unit is avoided, and meanwhile, a set space is reserved for the second packaging unit.

Furthermore, the light emitted by the emitting end element can be transmitted to the first opening end of the first groove at a first preset angle and first preset intensity through the design of the material, the placement position, the shape and the like of the first packaging unit, and the directivity of light transmission is realized.

Other features and corresponding advantages of the invention are set forth in the following part of the specification, and it is to be understood that at least some of the advantages become apparent from the description of the invention.

Drawings

Fig. 1 is a schematic cross-sectional view of a transmitting end assembly according to an embodiment of the present invention;

fig. 2 is a schematic sectional view of a photoelectric coupling device provided in a second embodiment of the present invention;

fig. 3 is a schematic top surface view of a receiving end module according to a second embodiment of the present invention;

fig. 4 is a schematic bottom surface view of a receiving end module according to a second embodiment of the present invention;

fig. 5 is a schematic flow chart of a packaging method of a photoelectric coupling device according to a third embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings by way of specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows:

the following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings and the embodiments. The embodiment of the utility model provides a transmitting end component, which is applied to a photoelectric coupling device obtained by adapting and installing with a receiving end component, the transmitting end component comprises a first shell unit, a transmitting end unit and a first packaging unit, wherein,

the first shell unit has a shape matched with the interior of the second shell unit in the receiving end assembly, so that the transmitting end assembly is conveniently arranged in the receiving end assembly; the first housing unit includes a first housing body and a first circuit unit; the first shell body comprises a first side part and a first top part, the first shell body is provided with a first groove, the first side part and the first top part surround to form the first groove, and the first groove is provided with a first opening end opposite to the first top part and a first bottom end opposite to the first opening end; the first circuit unit comprises at least one first connecting unit and at least one second connecting unit; the first connecting unit comprises a first connecting end, a second connecting end and a third connecting end connected between the first connecting end and the second connecting end; the second connecting unit comprises a fourth connecting end, a fifth connecting end and a sixth connecting end connected between the fourth connecting end and the fifth connecting end;

the first connecting end and the fourth connecting end are arranged on the inner surface of the first top part, the first connecting end is connected with the first electrode of the transmitting end element, and the fourth connecting end is connected with the second electrode of the transmitting end element;

the second connecting end and the fifth connecting end extend out of the transmitting end component or are arranged on the outer surface of the first shell body and are used for being connected with a circuit outside the transmitting end component;

the first packaging unit is positioned in the first groove, covers the emission end element and is used for transmitting the light rays emitted by the emission end element to the first opening end of the first groove.

The first housing body may be an insulating housing having a square shape, a circular shape, an irregular shape, or the like. Taking a square as an example, the first housing body may include 1 first top portion and 4 first side portions vertically connected to the first top portion, and the 4 first side portions are symmetrically disposed at left, right, front and rear sides. The first recess may be located at a middle region of the first case body. The first groove is provided with a first opening end opposite to the first top of the first shell body and a first bottom end opposite to the first opening end. The first open end may be circular, square, irregular, etc. The size of the first opening end can be matched with a receiving end unit in the receiving end component. In some embodiments, the first housing body may further include a bottom portion disposed opposite the first top portion, and the bottom portion is provided with the first open end of the first groove.

The first casing body can be a light-tight part, or the inner wall of the first groove is provided with a light-tight auxiliary part, so that light can be blocked or reflected, and the light is prevented from leaking from the first casing body.

The first groove can be cylindrical or conical, the first bottom end and the first opening end of the first groove are planes parallel to each other, and the diameter of the first bottom end of the first groove is smaller than that of the first opening end. The shape design of the first groove can help to gather the light emitted by the emission end element towards the first opening end of the first groove. In some embodiments, the shape of the first recess may have other designs.

The first circuit unit may include other circuits in addition to the at least one first connection unit and the at least one second connection unit. The first connecting unit and the second connecting unit can be leads, and can also be manufactured in a copper deposition mode and the like. One first connection unit and one second connection unit may be provided for each transmitting end element, two or more transmitting end elements may share the same first connection unit, and two or more transmitting end elements may share the same second connection unit.

The first connecting end and the fourth connecting end are arranged on the inner surface of the first top of the first shell body and used for being connected into the transmitting end element, the first electrode of the transmitting end element can be one of a positive electrode or a negative electrode, and the second electrode of the transmitting end element is the other one of the positive electrode or the negative electrode.

The third connecting end plays a role in connecting the first connecting end and the second connecting end, the sixth connecting end plays a role in connecting the fourth connecting end and the fifth connecting end, and the third connecting end and the sixth connecting end can be partially or completely embedded in the first shell body.

The second connecting end and the fifth connecting end are used as external electric connection interfaces of the transmitting end component and are used for being connected with circuits outside the transmitting end component. For example with a third circuit unit in the receiving side subassembly.

The second connecting end and the fifth connecting end can extend out of the transmitting end component or be arranged on the outer surface of the first shell body. The outer surface of the first case body includes an outer surface of the first side portion and an outer surface of the first top portion. The outer surface of the first side portion includes an outer surface disposed adjacent to the first top portion or an outer surface disposed opposite the first top portion. In some embodiments, the first housing body may further include a bottom portion disposed opposite the first top portion, and the bottom portion is provided with the first open end of the first groove, and the second connection end and the fifth connection end may be further disposed on an outer surface of the bottom portion. Preferably, the second connecting terminal and the fifth connecting terminal are disposed on an outer surface of the bottom portion or an outer surface of the first side portion opposite to the first top portion for facilitating connection with the third circuit unit in the receiving side module.

The first connecting end, the second connecting end and the third connecting end can be of an integrally formed structure. The fourth connecting end, the fifth connecting end and the sixth connecting end can be of an integrated structure. Of course, in some embodiments, one or more of the first connection end, the second connection end, the third connection end, the fourth connection end, the fifth connection end, and the sixth connection end may be a split structure.

In some embodiments, the first and second connection units may be symmetrically disposed on the first case body.

In some embodiments, the first circuit unit may further include at least one third connection unit disposed symmetrically to the first connection unit, and at least one fourth connection unit disposed symmetrically to the second connection unit. The third connecting unit and the fourth connecting unit can be hollow pins and are symmetrically arranged with the first connecting unit and the second connecting unit, so that the overall structure of the first shell unit is balanced, and the transmitting end assembly can be more stably arranged on the receiving end assembly. Of course, in some embodiments, the third connection unit and the fourth connection unit can be connected into the circuit for other purposes.

The transmitting end unit comprises at least one transmitting end element, and a plurality of transmitting end elements can be connected in series, connected in parallel and/or integrated in the same circuit module, and the circuit module can be an integrated chip. The emitter end element may be a light emitting diode, such as an infrared light emitting diode. The first top of the first shell body can be mounted on the inner surface of the first top by die bonding, wire bonding and the like.

The first packaging unit may be disposed in the first groove in a dispensing manner, and covers the transmitting end element, for transmitting light emitted by the transmitting end element to the outside of the first packaging unit, for example, to the first opening end of the first groove and to the receiving end assembly.

In some embodiments, a distance between the first package unit and the first opening end of the first recess is greater than a predetermined distance, which may be determined according to a height of a receiving end unit in the receiving end module, where the height of the receiving end unit may be a height of the receiving end device, a height of a connecting gold wire of the receiving end device, and the like. The damage to the receiving end unit is avoided, and meanwhile, a set space is reserved for the second packaging unit.

In some embodiments, the first bottom region of the first groove may be filled with the first encapsulation unit, and a distance from the first bottom region to the first opening end of the first groove is greater than the preset distance value.

In some embodiments, the light emitted by the emitting end element can be transmitted to the first opening end of the first groove at a first preset angle and a first preset intensity by designing the material, the placing position, the shape and the like of the first packaging unit, and the light transmission directivity is realized.

In the present embodiment, referring to fig. 1, the first case body includes 1 first

top portion

111, and 4 first side portions 112 connected to the first top portion 111 at an angle smaller than 90 degrees, and the 4 first side portions 112 are symmetrically disposed at left, right, front and rear sides (only 2 first side portions 112 at left and right are shown in fig. 1, and 2 first side portions 112 at front and rear are not shown). The first shell body is made of opaque materials and is an opaque part. The first casing body is provided with a first conical groove M, the first groove M is located in the middle area of the first casing body, the first groove is provided with a first opening end and a first bottom end arranged opposite to the first opening end, the first opening end of the first groove is arranged opposite to the first top 111 of the first casing body, the first bottom end and the first opening end are square, the first bottom end and the first opening end are planes parallel to each other, and the first bottom end is smaller than the first opening end in length and width.

The first circuit unit comprises a first connecting unit, a second connecting unit (not shown in fig. 1), a third connecting unit and a fourth connecting unit (not shown in fig. 1), the first connecting unit, the second connecting unit, the third connecting unit and the fourth connecting unit are symmetrically arranged on two sides of the first shell body, wherein the first connecting unit and the second connecting unit are arranged on the right side of the first shell body, and the third connecting unit and the fourth connecting unit are arranged on the left side of the first shell body. The third connecting unit and the fourth connecting unit are hollow pins and are symmetrically arranged with the first connecting unit and the second connecting unit, so that two sides of the first shell unit are balanced, and the transmitting end assembly can be more stably arranged on the receiving end assembly. The transmitting terminal unit includes a transmitting terminal member 121, and the transmitting terminal member 121 is mounted to the inner surface of the first top portion 111 of the first case body.

The first connection unit includes a first connection end 1131, a second connection end 1132, and a third connection end 1133 connected between the first connection end 1131 and the second connection end 1132; the second connection unit includes a fourth connection end, a fifth connection end, and a sixth connection end connected between the fourth connection end and the fifth connection end. Correspondingly, the third connecting unit and the fourth connecting unit respectively comprise 3 connecting ends which are connected in sequence. The first connection end 1131, the second connection end 1132 and the third connection end 1133 are integrally formed, the fourth connection end, the fifth connection end and the sixth connection end are integrally formed, the third connection unit is integrally formed, and the fourth connection unit is integrally formed. To facilitate connection with the third circuit unit in the receiving end module, the second connection end 1132, the fifth connection end, the corresponding external connection end of the third connection unit, and the corresponding external connection end of the fourth connection unit are disposed on the outer surface of the first side portion 112 of the first housing body opposite to the first top portion 111, and are symmetrically disposed on both sides.

The first encapsulation unit 13 fills up the first bottom area of the first groove M by dispensing, the distance from the first bottom area to the first opening end of the first groove M is greater than a preset distance value, the first encapsulation unit 13 has a first light-emitting surface 131 facing the first opening end of the first groove M, in this embodiment, the first light-emitting surface 131 is a plane, and also has a second light-emitting surface facing the first groove except the first opening end, the second light-emitting surface is tightly attached to the corresponding side wall position of the first groove M, the first casing body is made of opaque material, the corresponding side wall position of the first groove M can block light, or reflect light, so that more light is emitted from the first light-emitting surface 131.

The transmitting end assembly provided by the embodiment comprises the transmitting end element, the first shell unit and the first packaging unit, and the distance between the transmitting end element and the receiving end element can be controlled through the height of the first shell unit and the depth of the first groove; the first shell unit, the first packaging unit and the transmitting end element form an independent device together, and the first shell unit and the first packaging unit can play a role in fixing and protecting the transmitting end element, so that the reliability, the air tightness, the service life and the like of the transmitting end are improved; meanwhile, the first shell unit, the first packaging unit and the transmitting end element form an independent device, and the device is convenient to be adaptively installed, updated and replaced with a receiving end assembly; the first shell unit has a shape matched with the interior of the second shell unit in the receiving end assembly, so that the transmitting end assembly is conveniently installed in the second groove of the receiving end assembly, the transmitting end assembly is further protected through the second shell unit of the receiving end assembly, light leakage is avoided, and meanwhile, the structure of the photoelectric coupling device is more stable and firm.

The second embodiment:

the following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. This embodiment provides a photoelectric coupling device, comprising the transmitting side subassembly of any one of the embodiments, and further comprising a receiving side subassembly, a second packaging unit, a third packaging unit, and a fourth packaging unit, wherein,

the second circuit unit comprises at least one fifth connection unit and at least one sixth connection unit, wherein the fifth connection unit comprises a seventh connection end, an eighth connection end and a ninth connection end connected between the seventh connection end and the eighth connection end; the sixth connection unit includes a tenth connection end, an eleventh connection end, and a twelfth connection end connected between the tenth connection end and the eleventh connection end;

the transmitting end component is arranged in the second groove, and the first opening end of the first groove in the transmitting end component faces the inner surface of the second bottom and is aligned with the receiving end unit;

The second housing body may be an injection molded insulating housing. The second shell body can be made of opaque materials, and light is prevented from leaking from the second shell body. The second casing body can be a light-tight part, or the inner wall of the second groove is provided with a light-tight auxiliary part, so that light can be shielded or reflected, and the light can be prevented from leaking from the second casing body.

The second housing body may be an insulating housing of a square, circle, irregular shape, or the like. Taking a square shape as an example, the second housing body may include 1 second bottom portion and 4 second side portions vertically connected to the second top portion, and the 4 second side portions are symmetrically disposed at left, right, front and rear sides. The second groove may be located at a middle region of the second case body. The second open end may be circular, square, irregular, etc. The second open end may be sized and shaped to fit the firing end assembly.

The second circuit unit and the third circuit unit may be symmetrically disposed on the second case body, for example, symmetrically disposed at left and right sides of the second case body.

The second circuit unit is used for accessing the receiving end unit, and the third circuit unit is used for accessing the transmitting end unit in the transmitting end component.

The second circuit unit may include other circuits in addition to the at least one fifth connection unit and the at least one sixth connection unit.

The third circuit unit may include other circuits in addition to the at least one seventh connection unit and the at least one eighth connection unit.

The fifth connecting unit, the sixth connecting unit, the seventh connecting unit and the eighth connecting unit may be leads, and may also be manufactured by copper deposition or the like. One fifth connection unit and one sixth connection unit may be provided for each receiving end element, or two or more receiving end elements may share the same fifth connection unit, or two or more receiving end elements may share the same sixth connection unit.

The seventh connecting end and the tenth connecting end are arranged on the inner surface of the second bottom and are used for being connected with a receiving end element, taking the receiving end element as a phototriode as an example, the third electrode, the fourth electrode and the fifth electrode of the receiving end element can be a collector electrode, an emitter electrode and a base electrode respectively, and the base electrode is a photosensitive area. The ninth link plays a role in connecting the seventh link and the eighth link, and the twelfth link plays a role in connecting the tenth link and the eleventh link. The eighth connection terminal and the eleventh connection terminal are used as external electrical connection interfaces of the photoelectric coupling device, and are used for being connected with a circuit outside the photoelectric coupling device, for example, an external power supply. The eighth and eleventh connection terminals may extend out of the photoelectric coupling device or be disposed on an outer surface of the second housing body. The outer surface of the second case body may be an outer surface of the second side portion and/or an outer surface of the second bottom portion. As an example, the eighth connection end and the eleventh connection end may be disposed on an outer surface of the second base. As an example, a side groove or a through hole may be formed at the second side of the second case body, and the ninth connection end and the twelfth connection end may be partially or entirely disposed in the side groove or the through hole of the second side of the second case body.

And the thirteenth connecting end and the sixteenth connecting end are arranged on the inner surface of the second bottom and are used for being connected with the second connecting end and the fifth connecting end in the transmitting end component. The fifteenth link plays the effect of connecting thirteenth link and fourteenth link, and the eighteenth link plays the effect of connecting sixteenth link and seventeenth link. The fourteenth connection terminal and the seventeenth connection terminal are used as external electrical connection interfaces of the photoelectric coupling device, and are used for connecting with circuits outside the photoelectric coupling device, for example, an external power supply. The fourteenth connection end and the seventeenth connection end may extend out of the photoelectric coupling device or may be disposed on an outer surface of the second housing body. The outer surface of the second case body may be an outer surface of the second side portion and/or an outer surface of the second bottom portion. As an example, the fourteenth connection end and the seventeenth connection end may be disposed on an outer surface of the second base. As an example, the eighth connection end and the eleventh connection end may be disposed on an outer surface of the second base. As an example, a side groove or a through hole may be provided at the second side of the second case body, and the fifteenth connection end and the eighteenth connection end may be partially or entirely provided in the side groove or the through hole of the second side of the second case body.

In some embodiments, the fifth connection unit, the sixth connection unit, the seventh connection unit, and the eighth connection unit may be symmetrically disposed on the second case body. So that the second housing unit is balanced in overall structure.

The receiving end unit comprises at least one receiving end element, and a plurality of receiving end elements can be connected in series, connected in parallel and/or integrated in the same circuit module, and the circuit module can be an integrated chip.

The receiving end element may be a phototransistor, and may also be other photosensitive receiving devices. The second bottom can be mounted on the inner surface of the second bottom by die bonding, wire bonding and the like.

The seventh connection end, the eighth connection end and the ninth connection end may be an integrally formed structure, and the tenth connection end, the eleventh connection end and the twelfth connection end may be an integrally formed structure, although in some embodiments, one or more of the seventh connection end, the eighth connection end, the ninth connection end, the tenth connection end, the eleventh connection end and the twelfth connection end may be a split structure.

The thirteenth connecting end, the fourteenth connecting end and the fifteenth connecting end may be an integrally formed structure, the sixteenth connecting end, the seventeenth connecting end and the eighteenth connecting end may be an integrally formed structure, and in some embodiments, of course, one or more of the thirteenth connecting end, the fourteenth connecting end, the fifteenth connecting end, the sixteenth connecting end, the seventeenth connecting end and the eighteenth connecting end may be a split structure.

The transmitting end assembly can be mounted in the second groove by welding and the like.

The second packaging unit can be disposed between the receiving device and the first packaging unit in the transmitting end assembly by dispensing. In some embodiments, the second packaging unit fills the area between the receiving end device and the first packaging unit in the transmitting end component.

The third packaging unit can be arranged in the second groove in a dispensing mode and covers the transmitting end assembly and the inner surface of the second bottom.

The third encapsulation unit may use the same or different encapsulation material as the second encapsulation unit. In some embodiments, the second packaging unit and the third packaging unit may be an integrally molded structure.

The fourth packaging unit is a light-tight unit, such as black glue, and can be arranged in a dispensing or mould pressing mode to cover the third packaging unit; or cover the third encapsulation unit and extend to the outer surface of the second case body except for the eighth connection end, the eleventh connection end, the fourteenth connection end, and the seventeenth connection end. The eighth, eleventh, fourteenth and seventeenth connection terminals need to be exposed to be connected to a circuit other than the photoelectric coupling device.

In this embodiment, refer to fig. 2, 3, and 4 to show, fig. 2 is a schematic cross-sectional view of a photoelectric coupling device provided by embodiment two of the present invention, fig. 3 is a schematic top surface view of a receiving end assembly provided by embodiment two of the present invention, and fig. 4 is a schematic bottom surface view of a receiving end assembly provided by embodiment two of the present invention. The optoelectronic coupling device provided by this embodiment includes the transmitting end module shown in fig. 1 in the first embodiment, and further includes a receiving end module, a second packaging unit 3, a third packaging unit 4, and a fourth packaging unit 5; the receiving end assembly comprises a second shell unit and a receiving end unit; the second housing unit includes a second housing body, a second circuit unit, and a third circuit unit; the second housing body of this embodiment includes a second side portion 2112 and a second bottom portion 2111, the second housing body is provided with a second groove W, the second side portion 2112 and the second bottom portion 2111 surround to form the second groove W, the second groove W has a second open end opposite to the second bottom portion 2111, and a second bottom end opposite to the second open end;

the second circuit unit comprises a fifth connecting unit and a sixth connecting unit, and in the embodiment, the fifth connecting unit and the sixth connecting unit are in an integrated structure; the fifth connection unit includes a seventh connection end 2121, an eighth connection end 2122, and a ninth connection end 2123 connected between the seventh connection end 2121 and the eighth connection end 2122; the sixth connection unit includes a tenth connection end 2124, an eleventh connection end 2125, and a twelfth connection end 2126 connected between the tenth connection end 2124 and the eleventh connection end 2125;

the third circuit unit comprises a seventh connecting unit and an eighth connecting unit, in this embodiment, the seventh connecting unit and the eighth connecting unit are integrally formed, the seventh connecting unit comprises a thirteenth connecting end 2131, a fourteenth connecting end 2132, and a fifteenth connecting end 2133 connected between the thirteenth connecting end 2131 and the fourteenth connecting end 2132; the eighth connecting unit includes a sixteenth connecting end 2134, a seventeenth connecting end 2135, and an eighteenth connecting end 2136 connected between the sixteenth connecting end 2134 and the seventeenth connecting end 2135;

the receiving end unit comprises a phototransistor 221, and the phototransistor 221 is installed on the inner surface of the second bottom portion 2111;

a seventh connection end 2121 and a tenth connection end 2124 are arranged on the inner surface of the second bottom portion 2111, the seventh connection end 2121 is connected with the collector of the phototransistor, and the tenth connection end 2124 is connected with the emitter of the phototransistor; the ninth connecting end 2123 and the twelfth connecting end 2126 are respectively arranged on the left side of the second shell body in a hanging manner; eighth and

eleventh connection terminals

2122 and 2125 are provided on a left side region of the outer surface of the second bottom portion 2111 for connection with a circuit other than the photoelectric coupling device;

a thirteenth connecting end 2131 and a sixteenth connecting end 2134 are arranged on the inner surface of the second bottom portion 2111, the thirteenth connecting end 2131 is connected with the second connecting end 1132 in the firing end assembly, and the sixteenth connecting end 2134 is connected with the fifth connecting end in the firing end assembly; the fifteenth connecting end 2133 and the eighteenth connecting end 2136 are respectively arranged on the right side of the second shell body in a hanging manner; a fourteenth connection terminal 2132 and a seventeenth connection terminal 2135 are provided on a right side region of the outer surface of the second bottom portion 2111 for connection to a circuit other than the photoelectric coupling device;

in this embodiment, the eighth connection terminal 2122, the eleventh connection terminal 2125, the fourteenth connection terminal 2132 and the seventeenth connection terminal 2135 are used as external electrical connection interfaces of the photoelectric coupling device, and are used for connecting to a circuit other than the photoelectric coupling device, for example, an external power supply;

the transmitting end assembly is arranged in the second groove W in a welding mode, and a first opening end of a first groove M in the transmitting end assembly faces to the inner surface of the second bottom portion 2111 and is aligned with the phototransistor 221;

the second packaging unit 3 and the third packaging unit 4 are realized by dispensing glue into the second groove W and are of an integrally formed structure, the second packaging unit 3 fills the area between the phototriode 221 and the first packaging unit 13 in the emitter assembly, the third packaging unit 4 covers the emitter assembly and the inner surface of the second bottom 2111, and the fourth packaging unit 5 is a light-tight unit which can be black glue and fills the remaining space of the second groove W by dispensing glue to cover the third packaging unit 4.

In the photoelectric coupling device provided by this embodiment, the transmitting end assembly and the receiving end assembly are mounted in an adaptive manner to obtain the photoelectric coupling device, wherein the transmitting end assembly includes not only the transmitting end element itself, but also the first housing unit and the first encapsulation unit, and the distance between the transmitting end element and the receiving end element can be controlled by the height of the first housing unit and the depth of the first groove; the first shell unit, the first packaging unit and the transmitting end element form an independent device together, and the first shell unit and the first packaging unit can play a role in fixing and protecting the transmitting end element, so that the reliability, the air tightness, the service life and the like of the transmitting end are improved; meanwhile, the first shell unit, the first packaging unit and the transmitting end element form an independent device, and the device is convenient to be adaptively installed, updated and replaced with a receiving end assembly; the first shell unit has a shape matched with the interior of the second shell unit in the receiving end assembly, so that the transmitting end assembly is conveniently installed in the second groove of the receiving end assembly, the transmitting end assembly is further protected through the second shell unit of the receiving end assembly, light leakage is avoided, and meanwhile, the structure of the photoelectric coupling device is more stable and firm.

Example three:

the following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings and the embodiments. The embodiment provides a packaging method of a photoelectric coupling device, which is used for manufacturing the photoelectric coupling device in the second embodiment. Referring to fig. 5, the packaging method of the photoelectric coupling device provided in this embodiment mainly includes:

s101, manufacturing a transmitting end component.

Specifically, the method for manufacturing the transmitting side subassembly in the first embodiment may include the following steps:

and A1, manufacturing a first shell unit.

The first shell unit has a shape matched with the interior of a second shell unit in the receiving end assembly, so that the transmitting end assembly is convenient to mount in the receiving end assembly, and the first shell unit comprises a first shell body and a first circuit unit; the first shell body comprises a first side portion and a first top portion, the first shell body is provided with a first groove, the first side portion and the first top portion surround to form the first groove, and the first groove is provided with a first opening end and a first bottom end, wherein the first opening end is opposite to the first top portion, and the first bottom end is opposite to the first opening end. In some embodiments, the first housing body may further include a bottom portion disposed opposite the first top portion, and the bottom portion is provided with the first open end of the first groove.

First casing body can adopt adiactinic material injection moulding, and perhaps the inner wall of first recess is provided with light-tight auxiliary member, can be in the light or the reflection light, avoids light to spill from first casing body.

The first groove can be cylindrical or conical, the first bottom end and the first open end of the first groove are planes parallel to each other, and the diameter of the first bottom end of the first groove is smaller than that of the first open end. The shape design of the first groove can help to gather the light emitted by the emission end element towards the first opening end of the first groove. In some embodiments, the shape of the first recess may have other designs.

The first circuit unit comprises at least one first connecting unit and at least one second connecting unit; the number and positions of the first connecting unit and the second connecting unit can be determined according to the requirement and the number of the transmitting end elements.

The first connecting unit and the second connecting unit can be leads, are arranged on the first shell body in a through hole mode, and can also be manufactured in a copper deposition mode and the like.

The first connecting unit comprises a first connecting end, a second connecting end and a third connecting end connected between the first connecting end and the second connecting end; the second connection unit includes a fourth connection end, a fifth connection end, and a sixth connection end connected between the fourth connection end and the fifth connection end. The first connecting end, the second connecting end and the third connecting end can be of an integrated structure. The fourth connecting end, the fifth connecting end and the sixth connecting end can be of an integrated structure. Of course, in some embodiments, one or more of the first connection end, the second connection end, the third connection end, the fourth connection end, the fifth connection end, and the sixth connection end may be a split structure.

The first connecting end and the fourth connecting end are arranged on the inner surface of the first top of the first shell body and used for being connected into the transmitting end element.

The third connecting end and the sixth connecting end can be partially or completely embedded in the first shell body.

The second connecting end and the fifth connecting end are used as external electric connection interfaces of the transmitting end component and are used for being connected with circuits outside the transmitting end component. For example with a third circuit unit in the receiving side subassembly. The second connecting end and the fifth connecting end can extend out of the transmitting end component or are arranged on the outer surface of the first shell body. The outer surface of the first case body includes an outer surface of the first side portion and an outer surface of the first top portion. The outer surface of the first side portion includes an outer surface disposed adjacent to the first top portion or an outer surface disposed opposite the first top portion. In some embodiments, the first housing body may further include a bottom portion disposed opposite to the first top portion, the bottom portion being provided with the first open end of the first groove, and the second connection end and the fifth connection end may be further disposed on an outer surface of the bottom portion.

In some embodiments, the first circuit unit may further include at least one third connection unit disposed symmetrically to the first connection unit, and at least one fourth connection unit disposed symmetrically to the second connection unit. The third connecting unit and the fourth connecting unit can be hollow feet and are symmetrically arranged with the first connecting unit and the second connecting unit, so that the overall structure of the first shell unit is balanced, and the first shell unit can be more stably arranged on the receiving end assembly. Of course, in some embodiments, the third connection unit and the fourth connection unit may be connected to the circuit for other purposes.

Step A2, mounting at least one transmitting end element on the inner surface of the first top of the first shell body, and connecting the first connection end with the first electrode of the transmitting end element, and connecting the fourth connection end with the second electrode of the transmitting end element.

The transmitting end unit comprises at least one transmitting end element, and a plurality of transmitting end elements can be connected in series, connected in parallel and/or integrated in the same circuit module, and the circuit module can be an integrated chip. The emitter end element may be a light emitting diode, such as an infrared light emitting diode. The first shell body is arranged on the inner surface of the first top portion of the first shell body in a die bonding mode, a wire welding mode and the like.

And step A3, arranging a first packaging unit in the first groove, wherein the first packaging unit covers the transmitting end element and is used for transmitting the light emitted by the transmitting end element to the first opening end of the first groove.

The first packaging unit can be arranged in the first groove in a dispensing mode.

In some embodiments, a distance between the first packaging unit and the first opening end of the first recess is greater than a predetermined distance value, the predetermined distance value may be determined according to a height of a receiving end unit in the receiving end module, and the height of the receiving end unit may be a height of the receiving end device, a height of a connection gold wire of the receiving end device, and the like. The damage to the receiving end unit is avoided, and meanwhile, a set space is reserved for the second packaging unit.

In some embodiments, by designing the material, the placement position, the shape, and the like of the first encapsulating unit, the light emitted by the emitting end element is transmitted to the first opening end of the first groove at a first preset angle and a first preset intensity, and the light transmission directivity is realized.

As an example, the step A3 may include:

mixing transparent adhesive tape and a first preset admixture according to a first preset proportion to prepare a first colloid;

filling the first colloid to a first bottom end area of the first groove in a dispensing manner, wherein the distance from the first bottom end area to a first opening end of the first groove is greater than a preset distance value;

and heating and forming the filled first colloid.

The first predetermined admixture may be a light diffusion material, and the light diffusion material includes a nano silicon material and the like.

The first predetermined admixture and the first predetermined proportion may be determined according to a first predetermined angle and a first predetermined intensity of light transmission of the first encapsulating unit, and the first encapsulating unit may be screened for the optical parameter through the first predetermined admixture and the first predetermined proportion.

The first preset angle and the first preset intensity of the light transmission of the first packaging unit can be determined according to the current amplification factor (HFE) of the triode of the receiving end element; or the first preset admixture and the first preset proportion are determined according to the current amplification factor (HFE) of the triode of the receiving end element.

S102, manufacturing a receiving end module.

In some embodiments, the following steps may be included:

and B1, manufacturing a second shell unit.

The second housing unit includes a second housing body, a second circuit unit, and a third circuit unit; the second housing body may be an injection molded insulating housing. The second shell body can be made of opaque materials, and light is prevented from leaking from the second shell body. The second casing body can be light-tight part, and perhaps the inner wall of second recess is provided with light-tight auxiliary member, can be in the light or the reflection light, avoids light to spill from the second casing body.

The second housing body may be an insulating housing of a square, circle, irregular shape, or the like. Taking a square shape as an example, the second housing body may include 1 second bottom portion and 4 second side portions vertically connected to the second top portion, and the 4 second side portions are symmetrically disposed at left, right, front and rear sides. The second groove may be located at a middle region of the second case body. The second open end may be circular, square, irregular, etc. The size and shape of the second opening end can be matched with the transmitting end component. In some embodiments, the second housing body may further include a second top portion disposed opposite the second bottom portion, and the second top portion is provided with a second open end of the second groove.

The second circuit unit and the third circuit unit may be symmetrically disposed on the second case body, for example, symmetrically disposed at left and right sides of the second case body. The second circuit unit comprises at least one fifth connecting unit and at least one sixth connecting unit, and the fifth connecting unit comprises a seventh connecting end, an eighth connecting end and a ninth connecting end connected between the seventh connecting end and the eighth connecting end; the sixth connection unit includes a tenth connection end, an eleventh connection end, and a twelfth connection end connected between the tenth connection end and the eleventh connection end. The seventh connecting unit comprises a thirteenth connecting end, a fourteenth connecting end and a fifteenth connecting end connected between the thirteenth connecting end and the fourteenth connecting end; the eighth connection unit includes a sixteenth connection end, a seventeenth connection end, and an eighteenth connection end between the sixteenth connection end and the seventeenth connection end.

The seventh connecting end and the tenth connecting end are arranged on the inner surface of the second bottom; the eighth connecting end and the eleventh connecting end extend out of the photoelectric coupling device or are arranged on the outer surface of the second shell body and are used for being connected with a circuit outside the photoelectric coupling device.

The thirteenth connecting end and the sixteenth connecting end are arranged on the inner surface of the second bottom; the fourteenth connecting end and the seventeenth connecting end extend out of the photoelectric coupling device or are arranged on the outer surface of the second shell body and are used for being connected with a circuit outside the photoelectric coupling device.

And the eighth connecting end, the eleventh connecting end, the fourteenth connecting end and the seventeenth connecting end are used as external electric connection interfaces of the photoelectric coupling device and are used for being connected with a circuit outside the photoelectric coupling device, such as an external power supply.

And B2, mounting a receiving end unit on the inner surface of the second bottom.

The receiving end unit comprises at least one receiving end element, and a plurality of receiving end elements can be connected in series, connected in parallel and/or integrated in the same circuit module, and the circuit module can be an integrated chip. The receiving end element can be a phototriode, and can also be other photosensitive receiving devices. The seventh connecting end and the fourth connecting end are connected to the third electrode of the receiving end element, and the tenth connecting end and the fourth electrode of the receiving end element.

The steps S101 and S102 may be parallel or reverse in sequence.

S103, assembling the transmitting terminal module manufactured in S101 and the receiving terminal module manufactured in S102.

Specifically, the transmitting end assembly is arranged on the inner surface of the second bottom of the receiving end assembly, and the first opening end of the first groove in the transmitting end assembly faces the inner surface of the second bottom and is aligned with the receiving end unit; the thirteenth connecting end is connected with the second connecting end in the transmitting end component, and the sixteenth connecting end is connected with the fifth connecting end in the transmitting end component;

the transmitting end assembly may be mounted to the inner surface of the second bottom portion by welding or the like.

And S104, setting a second packaging unit.

A second packaging unit is arranged between a receiving end element in the receiving end assembly and a first packaging unit in the transmitting end assembly, and the second packaging unit is used for transmitting the light transmitted by the first packaging unit to the receiving end element.

And S105, setting a third packaging unit.

The second bottom portion is disposed in the second recess in a dispensing manner, and covers the transmitting end assembly and the inner surface of the second bottom portion.

The steps S104 and S105 may be performed simultaneously, and the second package unit and the third package unit are formed in one step by using a dispensing method, and the second package unit and the third package unit are formed as an integral structure, which may be performed in the following manner as an embodiment:

mixing the transparent glue and a second preset admixture according to a second preset proportion to prepare a second colloid;

and arranging a second packaging unit and a third packaging unit in the second groove in a dispensing manner, wherein the second packaging unit and the third packaging unit are of an integrally formed structure, the second packaging unit is filled between the receiving end component and the first packaging unit in the transmitting end component, and the third packaging unit covers the transmitting end component and the inner surface of the second bottom.

The second predetermined admixture may be a light diffusion material, and the light diffusion material includes a nano silicon material and the like.

The second predetermined admixture and the second predetermined ratio may be determined according to a second predetermined angle and a second predetermined intensity of light transmission of the second encapsulating unit, and the second encapsulating unit may be screened for the optical parameter through the second predetermined admixture and the second predetermined ratio. The second packaging unit is equivalent to supplement to the optical transmission of the first packaging unit, and the first packaging unit and the second packaging unit are mutually matched, so that the matching of the transmitting end element and the receiving end element achieves a more concentrated Current Transfer Ratio (CTR).

A first preset angle and a first preset intensity of light transmission of the first packaging unit, and a second preset angle and a second preset intensity of light transmission of the second packaging unit can be determined according to a current amplification factor (HFE) of a triode of a receiving end element; or determining the first preset admixture, the first preset proportion, the second preset admixture and the second preset proportion according to the current amplification factor (HFE) of the triode of the receiving end element.

And S106, setting a fourth packaging unit.

A fourth packaging unit is arranged on the upper surface of the third packaging unit, is an opaque unit and covers the third packaging unit; or cover the third encapsulation unit and extend to the outer surface of the second housing body except for the eighth connection end, the eleventh connection end, the fourteenth connection end, and the seventeenth connection end.

The fourth packaging unit is an opaque unit, for example, black glue, and may be disposed in a dispensing or molding manner, and the eighth connection end, the eleventh connection end, the fourteenth connection end, and the seventeenth connection end need to be exposed so as to be connected to a circuit other than the photoelectric coupling device.

In some embodiments, batch fabrication may be performed, a transmitting end module array and a receiving end module array are fabricated, the transmitting end module array and the receiving end module are aligned and mounted, a second packaging unit, a third packaging unit and a fourth packaging unit are disposed, and then the two packaging units are separated to obtain a single photoelectric coupling device or a photoelectric coupling device array.

The embodiment of the utility model provides a photoelectric coupling device's encapsulation method, wherein, the transmission side subassembly not only includes transmission end component itself, still includes first housing element and first encapsulation unit, can control the distance between transmission end component and the receiving end component through the height of first housing element, the degree of depth of first recess; the first shell unit, the first packaging unit and the transmitting end element form an independent device together, and the first shell unit and the first packaging unit can play a role in fixing and protecting the transmitting end element, so that the reliability, the air tightness, the service life and the like of the transmitting end are improved; meanwhile, the first shell unit, the first packaging unit and the transmitting end element form an independent device, and the device is convenient to be adaptively installed, updated and replaced with a receiving end assembly; the first shell unit has a shape matched with the interior of a second shell unit in the receiving end assembly, so that the transmitting end assembly is conveniently installed in a second groove of the receiving end assembly, the transmitting end assembly is further protected through the second shell unit of the receiving end assembly, light leakage is avoided, and the structure of the photoelectric coupling device is more stable and firm.

The foregoing is a more detailed description of embodiments of the present invention, and the specific embodiments are not to be considered in a limiting sense. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A transmitting end component is applied to a photoelectric coupling device which is obtained by adapting and installing a receiving end component,

the transmitting end assembly comprises a first shell unit, a transmitting end unit and a first packaging unit;

2. The firing end assembly of claim 1, wherein the second connecting end, the fifth connecting end are disposed on an exterior surface of the first side portion, the exterior surface of the first side portion including an exterior surface disposed adjacent to the first top portion or an exterior surface disposed opposite the first top portion;

or the first shell body further comprises a first bottom, the first bottom and the first top are arranged oppositely, the first bottom is provided with the first opening end of the first groove, and the second connecting end and the fifth connecting end are arranged on the outer surface of the first bottom.

3. The firing end assembly of claim 1, wherein the first housing body is a light-tight member or the interior wall of the first recess is provided with a light-tight auxiliary.

4. The firing end assembly of claim 1, wherein the first recess is cylindrical or conical, and the first base end and the first open end of the first recess are planar and parallel to each other, the first base end of the first recess having a diameter less than the diameter of the first open end.

5. The firing end subassembly of claim 1, wherein the first encapsulation unit is spaced from the first open end of the first recess by a distance greater than a predetermined distance value.

6. The firing end subassembly of any one of claims 1-5, wherein the first encapsulation unit fills a first bottom end region of the first recess, the first bottom end region being spaced from a first open end of the first recess by a distance greater than a predetermined distance.

7. An optoelectronic coupling device comprising the transmitting side subassembly of any one of claims 1 to 6, and further comprising a receiving side subassembly, a second encapsulation unit, a third encapsulation unit, and a fourth encapsulation unit, wherein,

the second circuit unit comprises at least one fifth connecting unit and at least one sixth connecting unit, wherein the fifth connecting unit comprises a seventh connecting end, an eighth connecting end and a ninth connecting end connected between the seventh connecting end and the eighth connecting end; the sixth connecting unit comprises a tenth connecting end, an eleventh connecting end and a twelfth connecting end connected between the tenth connecting end and the eleventh connecting end;

the third circuit unit comprises at least one seventh connection unit and at least one eighth connection unit, wherein the seventh connection unit comprises a thirteenth connection terminal, a fourteenth connection terminal and a fifteenth connection terminal connected between the thirteenth connection terminal and the fourteenth connection terminal; the eighth connecting unit comprises a sixteenth connecting end, a seventeenth connecting end and an eighteenth connecting end connected between the sixteenth connecting end and the seventeenth connecting end;

the second packaging unit is positioned between the receiving end element and the first packaging unit in the transmitting end component and is used for transmitting the light transmitted by the first packaging unit to the receiving end element;

the third packaging unit is positioned in the second groove and covers the transmitting end component and the inner surface of the second bottom;

8. The photocoupler as claimed in claim 7, wherein said eighth connection terminal, said eleventh connection terminal, said fourteenth connection terminal, said seventeenth connection terminal are provided on the outer surface of said second bottom portion.

9. The photocoupling device of claim 7, wherein the second encapsulation unit fills the area between the receiving end component and the first encapsulation unit in the transmitting end component.

10. The photoelectric coupling device of any one of claims 7 to 9, wherein the second encapsulation unit and the third encapsulation unit are of an integrally molded structure.