A transmitting end component, an optoelectronic coupling device and a packaging method thereof

Abstract

The embodiment of the present application provides a transmitting end assembly, an optoelectronic coupling device and a packaging method thereof, the transmitting end assembly comprises a first shell unit, a transmitting end unit and a first packaging unit, the first shell unit comprises a first shell body and a first circuit unit; the first circuit unit comprises at least one first connecting unit and at least one second connecting unit; the transmitting end unit comprises at least one transmitting end element, one connecting end of the first connecting unit and one 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 arranged in the groove and 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 technical problem that the existing optoelectronic coupling device is not perfect is solved.

Description

Technical Field

[0001] This invention relates to the field of electronics, and more particularly to a transmitter assembly, an optocoupler, and a packaging method thereof. Background Technology

[0002] Optocouplers are photoelectric conversion devices that transmit electrical signals using light as a medium, and they are widely used in various circuits. However, existing optocoupler packaging methods are relatively crude, resulting in drawbacks such as low reliability, poor hermeticity, and short lifespan. Summary of the Invention

[0003] The present invention provides a transmitter component, an optocoupler, and a packaging method thereof, which solves the technical problem that existing optocouplers are not perfect.

[0004] To solve the above technical problems, embodiments of the present invention provide a transmitter assembly, which is used to adapt and install with a receiver assembly to obtain an optocoupler. The transmitter assembly includes a first housing unit, a transmitter unit, and a first packaging unit.

[0005] The first housing unit has a shape adapted to the interior of the second housing unit in the receiver assembly. The first housing unit includes a first housing body and a first circuit unit. The first housing body includes a first side and a first top. The first housing body is provided with a first groove. The first side and the first top surround to form the first groove. The first groove has a first opening end opposite to the first top and a first bottom end opposite to the first opening end. The first circuit unit includes at least one first connection unit and at least one second connection unit. The first connection unit includes a first connection end, a second connection end, and a third connection end connected between the first connection end and the second connection 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.

[0006] The transmitting unit includes at least one transmitting element, which is mounted on the inner surface of the first top.

[0007] The first connection end and the fourth connection end are disposed on the inner surface of the first top, and the first connection end is connected to the first electrode of the transmitting element, and the fourth connection end is connected to the second electrode of the transmitting element.

[0008] The second connection terminal and the fifth connection terminal extend beyond the transmitter assembly or are disposed on the outer surface of the first housing body; for circuit connection with the receiver assembly;

[0009] The first encapsulation unit is located within the first groove and covers the transmitting element, for transmitting the light emitted by the transmitting element to the first opening end of the first groove.

[0010] To address the aforementioned technical problems, embodiments of the present invention also provide an optocoupler, comprising the transmitter assembly described in any of the preceding claims, and further comprising a receiver assembly, a second packaging unit, a third packaging unit, and a fourth packaging unit, wherein...

[0011] The receiver assembly includes a second housing unit and a receiver unit;

[0012] The second housing unit includes a second housing body, a second circuit unit, and a third circuit unit;

[0013] The second housing body includes a second side portion and a second bottom portion. The second housing body is provided with a second groove. The second side portion and the second bottom portion surround each other to form the second groove. The second groove has a second opening end disposed opposite to the second bottom portion and a second bottom end disposed opposite to the second opening end.

[0014] The second circuit unit includes at least one fifth connection unit and at least one sixth connection unit. The fifth connection unit includes a seventh connection terminal, an eighth connection terminal, and a ninth connection terminal connected between the seventh connection terminal and the eighth connection terminal. The sixth connection unit includes a tenth connection terminal, an eleventh connection terminal, and a twelfth connection terminal connected between the tenth connection terminal and the eleventh connection terminal.

[0015] The third circuit unit includes at least one seventh connection unit and at least one eighth connection unit. The seventh connection unit includes 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 connection unit includes a sixteenth connection terminal, a seventeenth connection terminal, and an eighteenth connection terminal connected between the sixteenth connection terminal and the seventeenth connection terminal.

[0016] The receiving unit includes at least one receiving element, which is mounted on the inner surface of the second bottom.

[0017] The seventh connection terminal and the tenth connection terminal are disposed on the inner surface of the second bottom, and the seventh connection terminal is connected to the third electrode of the receiving element, and the tenth connection terminal is connected to the fourth electrode of the receiving element; the eighth connection terminal and the eleventh connection terminal extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler.

[0018] The thirteenth and sixteenth connection terminals are disposed on the inner surface of the second bottom, and the thirteenth connection terminal is connected to the second connection terminal in the transmitter assembly, and the sixteenth connection terminal is connected to the fifth connection terminal in the transmitter assembly; the fourteenth and seventeenth connection terminals extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler.

[0019] The transmitter assembly is installed in the second groove, and the first opening end of the first groove in the transmitter assembly faces the inner surface of the second bottom and is aligned with the receiver unit;

[0020] The second encapsulation unit is located between the receiving element and the first encapsulation unit in the transmitting assembly, and is used to transmit the light transmitted from the first encapsulation unit to the receiving element;

[0021] The third packaging unit is located within the second groove and covers the inner surface of the transmitter assembly and the second bottom.

[0022] The fourth encapsulation unit is an opaque unit that covers the third encapsulation unit; or covers the third encapsulation unit and extends 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.

[0023] To address the aforementioned technical problems, embodiments of the present invention also provide a packaging method for an optocoupler, comprising:

[0024] Step 101: Fabricate the transmitter assembly described in any of the above items;

[0025] Step 102: Create the receiver component, specifically including:

[0026] Step B1: Fabricate the second shell unit;

[0027] The second housing unit includes a second housing body, a second circuit unit, and a third circuit unit; the second housing body includes a second side and a second bottom, the second housing body is provided with a second groove, the second side and the second bottom surround to form the second groove, the second groove has a second opening end disposed opposite to the second bottom, and a second bottom end disposed opposite to the second opening end;

[0028] The second circuit unit includes at least one fifth connection unit and at least one sixth connection unit. The fifth connection unit includes a seventh connection terminal, an eighth connection terminal, and a ninth connection terminal connected between the seventh connection terminal and the eighth connection terminal. The sixth connection unit includes a tenth connection terminal, an eleventh connection terminal, and a twelfth connection terminal connected between the tenth connection terminal and the eleventh connection terminal.

[0029] The third circuit unit includes at least one seventh connection unit and at least one eighth connection unit. The seventh connection unit includes 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 connection unit includes a sixteenth connection terminal, a seventeenth connection terminal, and an eighteenth connection terminal connected between the sixteenth connection terminal and the seventeenth connection terminal.

[0030] The seventh and tenth connecting ends are disposed on the inner surface of the second bottom; the thirteenth and sixteenth connecting ends are disposed on the inner surface of the second bottom; the eighth and eleventh connecting ends extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection to a circuit outside the optocoupler; the fourteenth and seventeenth connecting ends extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection to a circuit outside the optocoupler.

[0031] Step B2: Install the receiving unit on the inner surface of the second bottom;

[0032] The receiving unit includes at least one receiving element, which is mounted on the inner surface of the second bottom; and the seventh connecting end is connected to the third electrode of the receiving element, and the tenth connecting end is connected to the fourth electrode of the receiving element.

[0033] Step 103: Install the transmitter assembly made in step 101 into the second groove, with the first opening end of the first groove in the transmitter assembly facing the inner surface of the second bottom, and aligning it with the receiver unit; the thirteenth connection end is connected to the second connection end in the transmitter assembly, and the sixteenth connection end is connected to the fifth connection end in the transmitter assembly;

[0034] Step 104: A second encapsulation unit is disposed between the receiving end element and the first encapsulation unit in the transmitting end assembly. The second encapsulation unit is used to transmit the light transmitted from the first encapsulation unit to the receiving end element.

[0035] Step 105: A third encapsulation unit is disposed on the inner surface of the second bottom, the third encapsulation unit covering the transmitter assembly and the inner surface of the second bottom;

[0036] Step 106: A fourth packaging unit is provided on the third packaging unit. The fourth packaging unit is an opaque unit that covers the third packaging unit; or covers the third packaging unit and extends to the outer surface of the second housing body, except for the eighth connecting end, the eleventh connecting end, the fourteenth connecting end and the seventeenth connecting end.

[0037] Beneficial effects

[0038] The transmitter assembly, optocoupler, and packaging method provided in this invention are obtained by adapting and installing the transmitter assembly and the receiver assembly. The transmitter assembly includes a first housing unit, a transmitter unit, and a first packaging unit. The first housing unit is provided with a first groove. The transmitter unit and the first packaging unit are disposed in the first groove, and the first packaging unit covers the transmitter element in the transmitter unit, transmitting the light emitted by the transmitter element to the first opening end of the first groove. The transmitter assembly provided in this embodiment of the invention includes not only the transmitter element itself, but also a first housing unit and a first packaging unit. The distance between the transmitter element and the receiver element can be controlled by the height of the first housing unit and the depth of the first groove. The first housing unit, the first packaging unit, and the transmitter element together constitute an independent device. The first housing unit and the first packaging unit can fix and protect the transmitter element, improving the reliability, airtightness, and lifespan of the transmitter. At the same time, the first housing unit, the first packaging unit, and the transmitter element together constitute an independent device, which also facilitates adaptation, installation, and replacement with the receiver assembly. The first housing unit has a shape that matches the interior of the second housing unit in the receiver assembly, which facilitates the installation of the transmitter assembly in the second groove of the receiver assembly. The second housing unit of the receiver assembly further protects the transmitter assembly and prevents light leakage, while also making the structure of the optocoupler more stable and reliable.

[0039] Furthermore, the first groove is cylindrical or conical, and the first bottom end and the first opening end of the first groove are parallel planes. The diameter of the first bottom end of the first groove is smaller than the diameter of the first opening end. The shape design of the first groove can help to focus the light emitted by the transmitting element toward the first opening end of the first groove.

[0040] Furthermore, the distance between the first encapsulation unit and the first opening end of the first groove is greater than a preset distance value. This preset distance value can be determined according to the height of the receiving unit in the receiving end assembly, so as to avoid damage to the receiving unit and also to reserve space for the second encapsulation unit.

[0041] Furthermore, by designing the material, placement, and shape of the first packaging unit, the light emitted by the transmitting element can be transmitted to the first opening end of the first groove at a first preset angle and a first preset intensity, thus achieving directional light transmission.

[0042] Other features and corresponding beneficial effects of the present invention will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in the specification. Attached Figure Description

[0043] Figure 1 This is a cross-sectional schematic diagram of the transmitter assembly provided in Embodiment 1 of the present invention;

[0044] Figure 2 This is a cross-sectional schematic diagram of the optocoupler device provided in Embodiment 2 of the present invention;

[0045] Figure 3 This is a schematic diagram of the upper surface of the receiving end component provided in Embodiment 2 of the present invention;

[0046] Figure 4 This is a schematic diagram of the lower surface of the receiving end component provided in Embodiment 2 of the present invention;

[0047] Figure 5 This is a schematic flowchart of the packaging method for the optocoupler provided in Embodiment 3 of the present invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the embodiments of this invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0049] Example 1:

[0050] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. An embodiment of the present invention provides a transmitter assembly, which is used to adapt and install with a receiver assembly to obtain an optocoupler. The transmitter assembly includes a first housing unit, a transmitter unit, and a first packaging unit, wherein...

[0051] The first housing unit has a shape adapted to the interior of the second housing unit in the receiver assembly, facilitating the installation of the transmitter assembly within the receiver assembly. The first housing unit includes a first housing body and a first circuit unit. The first housing body includes a first side and a first top, and the first housing body is provided with a first groove. The first side and the first top surround to form the first groove. The first groove has a first opening end opposite to the first top and a first bottom end opposite to the first opening end. The first circuit unit includes at least one first connection unit and at least one second connection unit. The first connection unit includes a first connection end, a second connection end, and a third connection end connected between the first connection end and the second connection 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.

[0052] The transmitting unit includes at least one transmitting element, which is mounted on the inner surface of the first top.

[0053] The first connection end and the fourth connection end are disposed on the inner surface of the first top, and the first connection end is connected to the first electrode of the transmitting element, and the fourth connection end is connected to the second electrode of the transmitting element.

[0054] The second connection terminal and the fifth connection terminal extend beyond the transmitter assembly or are disposed on the outer surface of the first housing body for connection with circuitry outside the transmitter assembly;

[0055] The first encapsulation unit is located within the first groove and covers the transmitting element, for transmitting the light emitted by the transmitting element to the first opening end of the first groove.

[0056] The first housing body can be an insulating housing of a square, circular, or irregular shape. Taking a square shape as an example, the first housing body may include a first top and four first sides perpendicularly connected to the first top, with the four first sides symmetrically arranged on the left, right, front, and rear. The first groove may be located in the middle region of the first housing body. The first groove has a first opening end opposite to the first top of the first housing body and a first bottom end opposite to the first opening end. The first opening end can be circular, square, or irregular in shape. The size of the first opening end can be adapted to the receiving unit in the receiving end assembly. In some embodiments, the first housing body may further include a bottom, which is opposite to the first top, and the bottom has the first opening end of the first groove.

[0057] The first housing body can be an opaque component, or the inner wall of the first groove can be provided with an opaque auxiliary component to block or reflect light and prevent light from leaking out from the first housing body.

[0058] The first groove can be cylindrical or conical, and the first bottom end and the first opening end of the first groove are parallel planes. The diameter of the first bottom end of the first groove is smaller than the diameter of the first opening end. The shape design of the first groove can help to focus the light emitted by the emitting element toward the first opening end of the first groove. In some embodiments, the shape of the first groove can be other designs.

[0059] In addition to at least one first connection unit and at least one second connection unit, the first circuit unit may also include other circuits. The first connection unit and the second connection unit may be leads or made by means of copper plating, etc. One first connection unit and one second connection unit may be provided for each transmitting element, or two or more transmitting elements may share the same first connection unit, and two or more transmitting elements may also share the same second connection unit.

[0060] The first connection end and the fourth connection end are disposed on the inner surface of the first top of the first housing body and are used to connect to the transmitter element. The first electrode of the transmitter element can be either a positive electrode or a negative electrode, and the second electrode of the transmitter element can be either a positive electrode or a negative electrode.

[0061] The third connecting end serves to connect the first connecting end and the second connecting end, and the sixth connecting end serves to connect the fourth connecting end and the fifth connecting end. The third connecting end and the sixth connecting end can be partially or completely embedded in the first housing body.

[0062] The second and fifth connection terminals serve as external electrical connection interfaces for the transmitter assembly, used to connect to circuits outside the transmitter assembly. For example, they can connect to the third circuit unit in the receiver assembly.

[0063] The second and fifth connection terminals may extend beyond the transmitter assembly or be disposed on the outer surface of the first housing body. The outer surface of the first housing body includes the outer surface of the first side portion and the outer surface of the first top portion. The outer surface of the first side portion includes an outer surface adjacent to the first top portion or an outer surface opposite to the first top portion. In some embodiments, the first housing body may further include a bottom portion, which is disposed opposite to the first top portion, and the bottom portion has a first opening end with a first groove. The second and fifth connection terminals may also be disposed on the outer surface of the bottom portion. As a preferred embodiment, to facilitate connection with the third circuit unit in the receiver assembly, the second and fifth connection terminals are disposed on the outer surface of the bottom portion or on the outer surface of the first side portion opposite to the first top portion.

[0064] The first, second, and third connecting ends can be integrally formed. The fourth, fifth, and sixth connecting ends can also be integrally formed. Of course, in some embodiments, one or more of the first, second, third, fourth, fifth, and sixth connecting ends can be separate structures.

[0065] In some embodiments, the first connecting unit and the second connecting unit may be symmetrically arranged on the first housing body.

[0066] In some embodiments, the first circuit unit may further include at least one third connection unit symmetrically arranged with respect to the first connection unit, and at least one fourth connection unit symmetrically arranged with respect to the second connection unit. The third and fourth connection units may be unconnected pins. Their symmetrical arrangement with the first and second connection units allows for a balanced overall structure of the first housing unit, enabling the transmitter assembly to be mounted more stably on the receiver assembly. Of course, in some embodiments, the third and fourth connection units may also be connected to the circuit for other purposes.

[0067] The transmitter unit includes at least one transmitter element. Multiple transmitter elements can be connected in series, in parallel, and / or integrated into the same circuit module, which can be an integrated chip. The transmitter element can be a light-emitting diode, such as an infrared light-emitting diode. It can be mounted on the inner surface of the first top of the first housing body by means of die bonding, wire bonding, or other methods.

[0068] The first encapsulation unit can be disposed in the first groove by dispensing adhesive and cover the transmitting end element, for transmitting the light emitted by the transmitting end element to the outside of the first encapsulation unit, such as transmitting it to the first opening end of the first groove or to the receiving end component.

[0069] In some embodiments, the distance between the first packaging unit and the first opening end of the first groove is greater than a preset distance value. This preset distance value can be determined according to the height of the receiving unit in the receiving end assembly. The height of the receiving unit can be the height of the receiving element, the height of the connecting gold wire of the receiving element, etc. This avoids damage to the receiving unit and also provides space for the second packaging unit.

[0070] In some embodiments, the first encapsulation unit may fill the first bottom region of the first groove, and the distance between the first bottom region and the first opening end of the first groove is greater than the aforementioned preset distance value.

[0071] In some embodiments, the light emitted by the transmitting 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, placement position, shape, etc. of the first packaging unit, thus achieving directional light transmission.

[0072] In this embodiment, reference Figure 1 As shown, the first housing body includes a first top 111 and four first side portions 112 connected to the first top 111 at a certain angle, the angle being less than 90 degrees, and the four first side portions 112 are symmetrically arranged on the left, right, front, and rear. Figure 1 Only the left and right first side portions 112 are shown (the front and rear first side portions 112 are not shown). The first housing body is made of an opaque material and is an opaque component. The first housing body has a conical first groove M, which is located in the middle region of the first housing body. The first groove has a first open end and a first bottom end opposite to the first open end. The first open end of the first groove is opposite to the first top 111 of the first housing body. The first bottom end and the first open end are both square and are parallel planes. In terms of length and width, the first bottom end is smaller than the first open end.

[0073] The first circuit unit includes a first connection unit and a second connection unit. Figure 1 (not shown in the image), a third connecting unit and a fourth connecting unit ( Figure 1 (Not shown in the image), a first connecting unit, a second connecting unit, a third connecting unit, and a fourth connecting unit are symmetrically arranged on both sides of the first housing body. The first and second connecting units are located on the right side of the first housing body, and the third and fourth connecting units are located on the left side. The third and fourth connecting units are hollow feet, symmetrically arranged with the first and second connecting units, ensuring the first housing unit is balanced on both sides and allowing the transmitter assembly to be more stably mounted on the receiver assembly. The transmitter unit includes a transmitter element 121, which is mounted on the inner surface of the first top 111 of the first housing body.

[0074] The first connecting unit includes a first connecting end 1131, a second connecting end 1132, and a third connecting end 1133 connected between the first connecting end 1131 and the second connecting end 1132; the second connecting unit includes a fourth connecting end, a fifth connecting end, and a sixth connecting end connected between the fourth connecting end and the fifth connecting end. Correspondingly, the third connecting unit and the fourth connecting unit also each include three connecting ends connected in sequence. The first connecting end 1131, the second connecting end 1132, and the third connecting end 1133 are integrally formed structures, the fourth connecting end, the fifth connecting end, and the sixth connecting end are integrally formed structures, the third connecting unit is an integrally formed structure, and the fourth connecting unit is an integrally formed structure. To facilitate connection with the third circuit unit in the receiving end assembly, the second connecting end 1132, the fifth connecting end, the corresponding external connecting ends in the third connecting unit, and the corresponding external connecting ends in the fourth connecting unit are all 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.

[0075] The first encapsulation unit 13 fills the first bottom area of ​​the first groove M with adhesive by dispensing. The distance between the first bottom area and 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. It also has a second light-emitting surface facing the first groove in a direction other than the first opening end. The second light-emitting surface is in close contact with the corresponding side wall of the first groove M. The first housing body is made of an opaque material. The corresponding side wall of the first groove M can block light or reflect light, so that more light is emitted from the first light-emitting surface 131.

[0076] The transmitter assembly provided in this embodiment includes not only the transmitter element itself, but also a first housing unit and a first packaging unit. The distance between the transmitter element and the receiver element can be controlled by the height of the first housing unit and the depth of the first groove. The first housing unit, the first packaging unit, and the transmitter element together constitute an independent device. The first housing unit and the first packaging unit can fix and protect the transmitter element, improving the reliability, airtightness, and lifespan of the transmitter. At the same time, the first housing unit, the first packaging unit, and the transmitter element together constitute an independent device, which also facilitates adaptation, installation, and replacement with the receiver assembly. The first housing unit has a shape that matches the interior of the second housing unit in the receiver assembly, which facilitates the installation of the transmitter assembly in the second groove of the receiver assembly. The second housing unit of the receiver assembly further protects the transmitter assembly and prevents light leakage, while also making the structure of the optocoupler more stable and reliable.

[0077] Example 2:

[0078] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. This embodiment provides an optocoupler, including the transmitter assembly described in any one of Embodiment 1, and further including a receiver assembly, a second packaging unit, a third packaging unit, and a fourth packaging unit, wherein...

[0079] The receiver assembly includes a second housing unit and a receiver unit;

[0080] The second housing unit includes a second housing body, a second circuit unit, and a third circuit unit;

[0081] The second housing body includes a second side portion and a second bottom portion. The second housing body is provided with a second groove. The second side portion and the second bottom portion surround each other to form the second groove. The second groove has a second opening end disposed opposite to the second bottom portion and a second bottom end disposed opposite to the second opening end.

[0082] The second circuit unit includes at least one fifth connection unit and at least one sixth connection unit. The fifth connection unit includes a seventh connection terminal, an eighth connection terminal, and a ninth connection terminal connected between the seventh connection terminal and the eighth connection terminal. The sixth connection unit includes a tenth connection terminal, an eleventh connection terminal, and a twelfth connection terminal connected between the tenth connection terminal and the eleventh connection terminal.

[0083] The third circuit unit includes at least one seventh connection unit and at least one eighth connection unit. The seventh connection unit includes 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 connection unit includes a sixteenth connection terminal, a seventeenth connection terminal, and an eighteenth connection terminal connected between the sixteenth connection terminal and the seventeenth connection terminal.

[0084] The receiving unit includes at least one receiving element, which is mounted on the inner surface of the second bottom.

[0085] The seventh connection terminal and the tenth connection terminal are disposed on the inner surface of the second bottom, and the seventh connection terminal is connected to the third electrode of the receiving element, and the tenth connection terminal is connected to the fourth electrode of the receiving element; the eighth connection terminal and the eleventh connection terminal extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler.

[0086] The thirteenth and sixteenth connection terminals are disposed on the inner surface of the second bottom, and the thirteenth connection terminal is connected to the second connection terminal in the transmitter assembly, and the sixteenth connection terminal is connected to the fifth connection terminal in the transmitter assembly; the fourteenth and seventeenth connection terminals extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler.

[0087] The transmitter assembly is installed in the second groove, and the first opening end of the first groove in the transmitter assembly faces the inner surface of the second bottom and is aligned with the receiver unit;

[0088] The second encapsulation unit is located between the receiving element and the first encapsulation unit in the transmitting assembly, and is used to transmit the light transmitted from the first encapsulation unit to the receiving element;

[0089] The third packaging unit is located within the second groove and covers the inner surface of the transmitter assembly and the second bottom.

[0090] The fourth encapsulation unit is an opaque unit that covers the third encapsulation unit; or covers the third encapsulation unit and extends 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.

[0091] The second housing body can be an injection-molded insulating housing. The second housing body can be made of an opaque material to prevent light from leaking out. Alternatively, the second housing body can be an opaque component, or the inner wall of the second groove can be equipped with an opaque auxiliary component to block or reflect light, preventing light from leaking out of the second housing body.

[0092] The second housing body can be an insulating housing of square, circular, or irregular shape. Taking a square shape as an example, the second housing body can include a second bottom and four second sides perpendicularly connected to the second top, with the four second sides symmetrically arranged on the left, right, front, and rear. The second groove can be located in the middle region of the second housing body. The second opening end can be circular, square, or irregular in shape. The size and shape of the second opening end can be adapted to the transmitter assembly.

[0093] The second and third circuit units can be symmetrically arranged on the second housing body, for example, symmetrically arranged on the left and right sides of the second housing body.

[0094] The second circuit unit is used to connect to the receiver unit, and the third circuit unit is used to connect to the transmitter unit in the transmitter assembly.

[0095] In addition to including at least one fifth connection unit and at least one sixth connection unit, the second circuit unit may also include other circuits.

[0096] In addition to including at least one seventh connection unit and at least one eighth connection unit, the third circuit unit may also include other circuits.

[0097] The fifth, sixth, seventh, and eighth connection units can be leads or made using methods such as copper plating. Each receiving element can have one fifth and one sixth connection unit, or two or more receiving elements can share the same fifth connection unit, and two or more receiving elements can also share the same sixth connection unit.

[0098] The seventh and tenth connection terminals are disposed on the inner surface of the second bottom and are used to connect to the receiving element. Taking a phototransistor as an example, the third, fourth, and fifth electrodes of the receiving element can be the collector, emitter, and base, respectively, with the base being the photosensitive area. The ninth connection terminal connects the seventh and eighth connection terminals, and the twelfth connection terminal connects the tenth and eleventh connection terminals. The eighth and eleventh connection terminals serve as external electrical connection interfaces for the optocoupler, used to connect to circuits outside the optocoupler, such as connecting to an external power supply. The eighth and eleventh connection terminals can extend beyond the optocoupler or be disposed on the outer surface of the second housing body. The outer surface of the second housing body can be the outer surface of the second side and / or the outer surface of the second bottom. As one embodiment, the eighth and eleventh connection terminals can be disposed on the outer surface of the second bottom. As one embodiment, a side groove or through hole can be provided on the second side of the second housing body, and the ninth and twelfth connection terminals can be partially or entirely disposed in the side groove or through hole on the second side of the second housing body.

[0099] The thirteenth and sixteenth connecting terminals are disposed on the inner surface of the second bottom and are used to connect with the second and fifth connecting terminals in the transmitter assembly. The fifteenth connecting terminal connects the thirteenth and fourteenth connecting terminals, and the eighteenth connecting terminal connects the sixteenth and seventeenth connecting terminals. The fourteenth and seventeenth connecting terminals serve as external electrical connection interfaces for the optocoupler, used to connect to circuits outside the optocoupler, such as connecting to an external power source. The fourteenth and seventeenth connecting terminals may extend beyond the optocoupler or be disposed on the outer surface of the second housing body. The outer surface of the second housing body may be the outer surface of the second side and / or the outer surface of the second bottom. As one embodiment, the fourteenth and seventeenth connecting terminals may be disposed on the outer surface of the second bottom. As one embodiment, the eighth and eleventh connecting terminals may be disposed on the outer surface of the second bottom. As one embodiment, a side groove or through hole may be provided on the second side of the second housing body, and the fifteenth and eighteenth connecting terminals may be partially or entirely disposed in the side groove or through hole on the second side of the second housing body.

[0100] In some embodiments, the fifth connecting unit, the sixth connecting unit, the seventh connecting unit, and the eighth connecting unit may be symmetrically arranged on the second housing body, thereby making the overall structure of the second housing unit balanced.

[0101] The receiving unit includes at least one receiving element, and multiple receiving elements may be connected in series, in parallel and / or integrated in the same circuit module, which may be an integrated chip.

[0102] The receiving component can be a phototransistor, or other photosensitive receiving devices. It can be mounted on the inner surface of the second bottom layer using methods such as die bonding or wire bonding.

[0103] The seventh, eighth, and ninth connecting ends can be integrally formed structures, and the tenth, eleventh, and twelfth connecting ends can be integrally formed structures. Of course, in some embodiments, one or more of the seventh, eighth, ninth, tenth, eleventh, and twelfth connecting ends can be separate structures.

[0104] The thirteenth, fourteenth, and fifteenth connecting ends can be integrally formed structures, and the sixteenth, seventeenth, and eighteenth connecting ends can be integrally formed structures. Of course, in some embodiments, one or more of the thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, and eighteenth connecting ends can be separate structures.

[0105] The transmitter assembly can be installed in the second groove by means of welding or other methods.

[0106] The second encapsulation unit can be disposed between the first encapsulation unit in the receiver element and the transmitter assembly using adhesive dispensing. In some embodiments, the second encapsulation unit fills the area between the first encapsulation unit in the receiver element and the transmitter assembly.

[0107] The third encapsulation unit can be disposed in the second groove by dispensing adhesive, and covers the inner surface of the transmitter assembly and the second bottom.

[0108] The third packaging unit may use the same or different packaging material as the second packaging unit. In some embodiments, the second packaging unit and the third packaging unit may be an integrally formed structure.

[0109] The fourth encapsulation unit is an opaque unit, such as black adhesive, which can be applied by dispensing or molding to cover the third encapsulation unit; or it can cover the third encapsulation unit and extend to the outer surface of the second housing body, except for the eighth, eleventh, fourteenth, and seventeenth connection terminals. The eighth, eleventh, fourteenth, and seventeenth connection terminals need to be exposed for connection to circuits outside the optocoupler.

[0110] In this embodiment, reference Figure 2 , 3 As shown in Figure 4, Figure 2 This is a cross-sectional schematic diagram of the optocoupler device provided in Embodiment 2 of the present invention. Figure 3 This is a schematic diagram of the upper surface of the receiving end component provided in Embodiment 2 of the present invention. Figure 4 This is a schematic diagram of the lower surface of the receiving end component provided in Embodiment 2 of the present invention. The optocoupler provided in this embodiment includes the one described in Embodiment 1. Figure 1 The transmitter assembly shown also includes a receiver assembly, a second packaging unit 3, a third packaging unit 4, and a fourth packaging unit 5; the receiver assembly includes a second housing unit and a receiver unit; the second housing unit includes a second housing body, a second circuit unit, and a third circuit unit; in this embodiment, the second housing body 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 opening end disposed opposite to the second bottom portion 2111, and a second bottom end disposed opposite to the second opening end;

[0111] The second circuit unit includes a fifth connection unit and a sixth connection unit. In this embodiment, the fifth connection unit and the sixth connection unit are integrally formed. The fifth connection unit includes a seventh connection terminal 2121, an eighth connection terminal 2122, and a ninth connection terminal 2123 connected between the seventh connection terminal 2121 and the eighth connection terminal 2122. The sixth connection unit includes a tenth connection terminal 2124, an eleventh connection terminal 2125, and a twelfth connection terminal 2126 connected between the tenth connection terminal 2124 and the eleventh connection terminal 2125.

[0112] The third circuit unit includes a seventh connection unit and an eighth connection unit. In this embodiment, the seventh connection unit and the eighth connection unit are integrally formed. The seventh connection unit includes a thirteenth connection terminal 2131, a fourteenth connection terminal 2132, and a fifteenth connection terminal 2133 connected between the thirteenth connection terminal 2131 and the fourteenth connection terminal 2132. The eighth connection unit includes a sixteenth connection terminal 2134, a seventeenth connection terminal 2135, and an eighteenth connection terminal 2136 connected between the sixteenth connection terminal 2134 and the seventeenth connection terminal 2135.

[0113] The receiving unit includes a phototransistor 221, which is mounted on the inner surface of the second bottom 2111;

[0114] The seventh connection terminal 2121 and the tenth connection terminal 2124 are disposed on the inner surface of the second bottom 2111, with the seventh connection terminal 2121 connected to the collector of the phototransistor and the tenth connection terminal 2124 connected to the emitter of the phototransistor; the ninth connection terminal 2123 and the twelfth connection terminal 2126 are respectively suspended on the left side of the second housing body; the eighth connection terminal 2122 and the eleventh connection terminal 2125 are disposed on the left side of the outer surface of the second bottom 2111 and are used for connecting to circuits other than the optocoupler.

[0115] The thirteenth connection terminal 2131 and the sixteenth connection terminal 2134 are disposed on the inner surface of the second bottom 2111, with the thirteenth connection terminal 2131 connected to the second connection terminal 1132 in the transmitter assembly and the sixteenth connection terminal 2134 connected to the fifth connection terminal in the transmitter assembly; the fifteenth connection terminal 2133 and the eighteenth connection terminal 2136 are respectively suspended on the right side of the second housing body; the fourteenth connection terminal 2132 and the seventeenth connection terminal 2135 are disposed on the right side of the outer surface of the second bottom 2111 and are used for connecting to circuits other than the optocoupler.

[0116] In this embodiment, the eighth connection terminal 2122, the eleventh connection terminal 2125, the fourteenth connection terminal 2132, and the seventeenth connection terminal 2135 serve as external electrical connection interfaces for the optocoupler, used for connecting to circuits outside the optocoupler, such as connecting to an external power source.

[0117] The transmitter assembly is installed in the second groove W by welding, and the first opening end of the first groove M in the transmitter assembly faces the inner surface of the second bottom 2111 and is aligned with the phototransistor 221.

[0118] The second encapsulation unit 3 and the third encapsulation unit 4 are integrated by dispensing adhesive into the second groove W. The second encapsulation unit 3 fills the area between the phototransistor 221 and the first encapsulation unit 13 in the transmitter assembly. The third encapsulation unit 4 covers the transmitter assembly and the inner surface of the second bottom 2111. The fourth encapsulation unit 5 is an opaque unit and can be made of black adhesive. It fills the remaining space of the second groove W by dispensing adhesive and covers the third encapsulation unit 4.

[0119] The optocoupler provided in this embodiment is obtained by adapting and installing a transmitter assembly and a receiver assembly. The transmitter assembly includes not only the transmitter element itself, but also a first housing unit and a first encapsulation unit. The distance between the transmitter element and the receiver element can be controlled by the height of the first housing unit and the depth of the first groove. The first housing unit, the first encapsulation unit, and the transmitter element together constitute an independent device. The first housing unit and the first encapsulation unit can fix and protect the transmitter element, improving the reliability, airtightness, and lifespan of the transmitter. At the same time, the first housing unit, the first encapsulation unit, and the transmitter element together constitute an independent device, which also facilitates adaptation, installation, and replacement with the receiver assembly. The first housing unit has a shape that adapts to the interior of the second housing unit in the receiver assembly, which facilitates the installation of the transmitter assembly in the second groove of the receiver assembly. The second housing unit of the receiver assembly further protects the transmitter assembly and prevents light leakage, while also making the structure of the optocoupler more stable and reliable.

[0120] Example 3:

[0121] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. This embodiment provides a packaging method for an optocoupler, used to fabricate the optocoupler in Embodiment 2. Please refer to... Figure 5 As shown, the packaging method for the optocoupler provided in this embodiment mainly includes:

[0122] S101. Fabricate the transmitter assembly.

[0123] Specifically, the fabrication of the transmitter component in Embodiment 1, as one embodiment, may include the following steps:

[0124] Step A1: Fabricate the first shell unit.

[0125] The first housing unit has a shape adapted to the interior of the second housing unit in the receiver assembly, facilitating the installation of the transmitter assembly within the receiver assembly. The first housing unit includes a first housing body and a first circuit unit. The first housing body includes a first side and a first top, and the first housing body is provided with a first groove. The first side and the first top surround to form the first groove. The first groove has a first opening end opposite to the first top and a first bottom end opposite to the first opening end. In some embodiments, the first housing body may further include a bottom, which is opposite to the first top and has the first opening end of the first groove.

[0126] The first housing body can be injection molded from an opaque material, or the inner wall of the first groove can be provided with an opaque auxiliary component to block or reflect light and prevent light from leaking out from the first housing body.

[0127] The first groove can be cylindrical or conical, and the first bottom end and the first opening end of the first groove are parallel planes. The diameter of the first bottom end of the first groove is smaller than the diameter of the first opening end. The shape design of the first groove can help to focus the light emitted by the emitting element toward the first opening end of the first groove. In some embodiments, the shape of the first groove can be other designs.

[0128] The first circuit unit includes at least one first connection unit and at least one second connection unit; the number and position of the first connection unit and the second connection unit can be determined as needed and as well as the number of transmitting end components.

[0129] The first and second connecting units can be leads, which are set in the first housing body through through holes, or they can be made by methods such as plating copper.

[0130] The first connecting unit includes a first connecting end, a second connecting end, and a third connecting end connected between the first and second connecting ends; the second connecting unit includes a fourth connecting end, a fifth connecting end, and a sixth connecting end connected between the fourth and fifth connecting ends. The first, second, and third connecting ends can be integrally formed. The fourth, fifth, and sixth connecting ends can also be integrally formed. Of course, in some embodiments, one or more of the first, second, third, fourth, fifth, and sixth connecting ends can be separate structures.

[0131] The first connection end and the fourth connection end are disposed on the inner surface of the first top of the first housing body and are used to connect to the transmitting end element.

[0132] The third and sixth connecting ends can be partially or completely embedded in the first housing body.

[0133] The second and fifth connection terminals serve as external electrical connection interfaces for the transmitter assembly, used to connect to circuits outside the transmitter assembly, such as a third circuit unit in the receiver assembly. The second and fifth connection terminals may extend beyond the transmitter assembly or be disposed on the outer surface of the first housing body. The outer surface of the first housing body includes the outer surface of a first side portion and the outer surface of a first top portion. The outer surface of the first side portion includes an outer surface adjacent to the first top portion or an outer surface opposite to the first top portion. In some embodiments, the first housing body may further include a bottom portion, which is opposite to the first top portion, and the bottom portion has a first opening end with a first groove; the second and fifth connection terminals may also be disposed on the outer surface of the bottom portion.

[0134] In some embodiments, the first connecting unit and the second connecting unit may be symmetrically arranged on the first housing body.

[0135] In some embodiments, the first circuit unit may further include at least one third connection unit symmetrically arranged with respect to the first connection unit, and at least one fourth connection unit symmetrically arranged with respect to the second connection unit. The third and fourth connection units may be unconnected pins. Their symmetrical arrangement with the first and second connection units allows for a more balanced overall structure of the first housing unit, enabling more stable mounting on the receiver assembly. Of course, in some embodiments, the third and fourth connection units may also be connected to circuitry for other purposes.

[0136] Step A2: Install at least one transmitter element on the inner surface of the first top of the first housing body, and connect the first connection end to the first electrode of the transmitter element, and connect the fourth connection end to the second electrode of the transmitter element.

[0137] The transmitter unit includes at least one transmitter element. Multiple transmitter elements can be connected in series, in parallel, and / or integrated into the same circuit module, which can be an integrated chip. The transmitter element can be a light-emitting diode, such as an infrared light-emitting diode. It can be mounted on the inner surface of the first top of the first housing body by means of die bonding, wire bonding, or other methods.

[0138] Step A3: A first encapsulation unit is set in the first groove. The first encapsulation unit covers the transmitting element and is used to transmit the light emitted by the transmitting element to the first opening end of the first groove.

[0139] The first encapsulation unit can be disposed in the first groove by dispensing adhesive.

[0140] In some embodiments, the distance between the first packaging unit and the first opening end of the first groove is greater than a preset distance value. This preset distance value can be determined according to the height of the receiving unit in the receiving end assembly. The height of the receiving unit can be the height of the receiving element, the height of the connecting gold wire of the receiving element, etc. This avoids damage to the receiving unit and also provides space for the second packaging unit.

[0141] In some embodiments, the first encapsulation unit may fill the first bottom region of the first groove, and the distance between the first bottom region and the first opening end of the first groove is greater than the aforementioned preset distance value.

[0142] In some embodiments, the light emitted by the transmitting 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, placement position, shape, etc. of the first packaging unit, thus achieving directional light transmission.

[0143] As one embodiment, step A3 may include:

[0144] The transparent adhesive and the first preset admixture are mixed in a first preset ratio to form the first colloid;

[0145] The first adhesive is filled into the first bottom area of ​​the first groove by dispensing, and the distance between the first bottom area and the first opening end of the first groove is greater than a preset distance value.

[0146] The first colloid after filling is heated and molded.

[0147] The first pre-designed admixture can be a light-diffusing material, including nano-silicon materials, etc.

[0148] The first preset admixture and the first preset ratio can be determined based on the first preset angle and the first preset intensity of light transmission in the first packaging unit, and the optical parameters of the first packaging unit can be screened using the first preset admixture and the first preset ratio.

[0149] The first preset angle and the first preset intensity of optical transmission of the first packaging unit can be determined based on the current amplification factor (HFE) of the transistor of the receiving end element; or the first preset admixture and the first preset ratio can be determined based on the current amplification factor (HFE) of the transistor of the receiving end element.

[0150] S102. Make the receiver component.

[0151] In some embodiments, the following steps may be included:

[0152] Step B1: Fabricate the second shell unit.

[0153] The second housing unit includes a second housing body, a second circuit unit, and a third circuit unit; wherein, the second housing body can be an injection-molded insulating housing. The second housing body can be made of an opaque material to prevent light from leaking out from the second housing body. The second housing body can be an opaque component, or the inner wall of the second groove can be provided with an opaque auxiliary component to block or reflect light, preventing light from leaking out from the second housing body.

[0154] The second housing body can be an insulating housing of square, circular, or irregular shape. Taking a square shape as an example, the second housing body can include a second bottom and four second sides perpendicularly connected to the second top, with the four second sides symmetrically arranged on the left, right, front, and rear. The second groove can be located in the middle region of the second housing body. The second opening end can be circular, square, or irregular in shape. The size and shape of the second opening end can be adapted to the transmitter assembly. In some embodiments, the second housing body can also include a second top, which is disposed opposite to the second bottom, and the second top is provided with a second opening end of the second groove.

[0155] The second and third circuit units can be symmetrically arranged on the second housing body, for example, symmetrically arranged on the left and right sides of the second housing body. The second circuit unit includes at least one fifth connecting unit and at least one sixth connecting unit. The fifth connecting unit includes a seventh connecting terminal, an eighth connecting terminal, and a ninth connecting terminal connected between the seventh and eighth connecting terminals. The sixth connecting unit includes a tenth connecting terminal, an eleventh connecting terminal, and a twelfth connecting terminal connected between the tenth and eleventh connecting terminals. The seventh connecting unit includes a thirteenth connecting terminal, a fourteenth connecting terminal, and a fifteenth connecting terminal connected between the thirteenth and fourteenth connecting terminals. The eighth connecting unit includes a sixteenth connecting terminal, a seventeenth connecting terminal, and an eighteenth connecting terminal connected between the sixteenth and seventeenth connecting terminals.

[0156] The fifth, sixth, seventh, and eighth connection units can be leads or made using methods such as copper plating. Each receiving element can have one fifth and one sixth connection unit, or two or more receiving elements can share the same fifth connection unit, and two or more receiving elements can also share the same sixth connection unit.

[0157] The seventh, eighth, and ninth connecting ends can be integrally formed structures, and the tenth, eleventh, and twelfth connecting ends can be integrally formed structures. Of course, in some embodiments, one or more of the seventh, eighth, ninth, tenth, eleventh, and twelfth connecting ends can be separate structures.

[0158] The thirteenth, fourteenth, and fifteenth connecting ends can be integrally formed structures, and the sixteenth, seventeenth, and eighteenth connecting ends can be integrally formed structures. Of course, in some embodiments, one or more of the thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, and eighteenth connecting ends can be separate structures.

[0159] The seventh and tenth connection ends are disposed on the inner surface of the second bottom; the eighth and eleventh connection ends extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler.

[0160] The thirteenth and sixteenth connection terminals are disposed on the inner surface of the second bottom; the fourteenth and seventeenth connection terminals extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler.

[0161] The eighth, eleventh, fourteenth, and seventeenth connection terminals serve as external electrical connection interfaces for the optocoupler, used for connecting to circuits outside the optocoupler, such as connecting to an external power source.

[0162] Step B2: Install the receiver unit on the inner surface of the second bottom.

[0163] The receiving unit includes at least one receiving element. Multiple receiving elements can be connected in series, parallel, and / or integrated into the same circuit module, which can be an integrated chip. The receiving element can be a phototransistor, or other photosensitive receiving device. It can be mounted on the upper surface of the second housing body by die bonding, wire bonding, or other methods, with the seventh connection terminal connected to the third electrode of the receiving element and the tenth connection terminal connected to the fourth electrode of the receiving element.

[0164] The above steps S101 and S102 can be performed in parallel or in reverse order.

[0165] S103. Assemble the transmitter assembly made in S101 and the receiver assembly made in S102.

[0166] Specifically, the transmitter assembly is mounted on the inner surface of the second bottom of the receiver assembly, with the first opening end of the first groove in the transmitter assembly facing the inner surface of the second bottom and aligned with the receiver unit; and the thirteenth connection end is connected to the second connection end in the transmitter assembly, and the sixteenth connection end is connected to the fifth connection end in the transmitter assembly.

[0167] The transmitter assembly can be mounted on the inner surface of the second bottom by means of welding or other methods.

[0168] S104. Set the second packaging unit.

[0169] A second encapsulation unit is disposed between the receiver element in the receiver assembly and the first encapsulation unit in the transmitter assembly. The second encapsulation unit is used to transmit the light emitted from the first encapsulation unit to the receiver element.

[0170] The second encapsulation unit can be disposed between the first encapsulation unit in the receiver element and the transmitter assembly using adhesive dispensing. In some embodiments, the second encapsulation unit fills the area between the first encapsulation unit in the receiver element and the transmitter assembly.

[0171] S105, Set the third packaging unit.

[0172] It can be applied by dispensing into the second groove to cover the transmitter assembly and the inner surface of the second bottom.

[0173] Steps S104 and S105 above can be performed simultaneously, using dispensing to form the second and third encapsulation units in one step. The second and third encapsulation units are an integrally molded structure. As one embodiment, the following method can be used:

[0174] The transparent adhesive and the second preset admixture are mixed in a second preset ratio to make a second colloid;

[0175] A second encapsulation unit and a third encapsulation unit are disposed in the second groove by dispensing adhesive. The second encapsulation unit and the third encapsulation unit are integrally formed structures. The second encapsulation unit fills the space between the first encapsulation unit in the receiver component and the transmitter assembly. The third encapsulation unit covers the transmitter assembly and the inner surface of the second bottom.

[0176] The second pre-designed dopant can be a light-diffusing material, including nano-silicon materials, etc.

[0177] The second preset dopant and the second preset ratio can be determined based on the second preset angle and the second preset intensity of the light transmission of the second packaging unit. The optical parameters of the second packaging unit are then screened using the second preset dopant and the second preset ratio. The second packaging unit is equivalent to supplementing the light transmission of the first packaging unit. Through the cooperation of the first and second packaging units, the matching between the transmitting and receiving components achieves a more concentrated current transfer ratio (CTR).

[0178] The first preset angle and first preset intensity of optical transmission of the first packaging unit, and the second preset angle and second preset intensity of optical transmission of the second packaging unit can be determined based on the current amplification factor (HFE) of the transistor of the receiving end element; or the first preset dopant, first preset ratio, second preset dopant and second preset ratio can be determined based on the current amplification factor (HFE) of the transistor of the receiving end element.

[0179] S106. Set the fourth packaging unit.

[0180] A fourth packaging unit is disposed on the upper surface of the third packaging unit. The fourth packaging unit is an opaque unit that covers the third packaging unit; or it covers the third packaging unit and extends 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.

[0181] The fourth encapsulation unit is an opaque unit, such as black glue, which can be set by dispensing or molding. The eighth, eleventh, fourteenth, and seventeenth connectors need to be exposed so that they can be connected to circuits outside the optocoupler.

[0182] In some embodiments, mass production can be achieved by manufacturing a transmitter component array and a receiver component array, aligning and installing the transmitter component array and the receiver component, and then setting a second packaging unit, a third packaging unit, and a fourth packaging unit, followed by separation to obtain a single optocoupler or an array of optocouplers.

[0183] The packaging method for the optocoupler provided in this invention includes a transmitter assembly that includes not only the transmitter element itself but also a first housing unit and a first packaging unit. The distance between the transmitter element and the receiver element can be controlled by the height of the first housing unit and the depth of the first groove. The first housing unit, the first packaging unit, and the transmitter element together constitute an independent device. The first housing unit and the first packaging unit can fix and protect the transmitter element, improving the reliability, airtightness, and lifespan of the transmitter. At the same time, the first housing unit, the first packaging unit, and the transmitter element together constitute an independent device, which also facilitates adaptation, installation, and replacement with the receiver assembly. The first housing unit has a shape that matches the interior of the second housing unit in the receiver assembly, facilitating the installation of the transmitter assembly in the second groove of the receiver assembly. The second housing unit of the receiver assembly further protects the transmitter assembly and prevents light leakage, while also making the structure of the optocoupler more stable and reliable.

[0184] The above description, in conjunction with specific implementation methods, provides a further detailed explanation of the embodiments of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A transmitter assembly, used in conjunction with a receiver assembly to obtain an optocoupler, characterized in that, The transmitter assembly includes a first housing unit, a transmitter unit, and a first packaging unit; The first housing unit has a shape adapted to the interior of the second housing unit in the receiver assembly. The first housing unit includes a first housing body and a first circuit unit. The first housing body includes a first side and a first top. The first housing body is provided with a first groove. The first side and the first top surround to form the first groove. The first groove has a first opening end opposite to the first top and a first bottom end opposite to the first opening end. The first circuit unit includes at least one first connection unit and at least one second connection unit. The first connection unit includes a first connection end, a second connection end, and a third connection end connected between the first connection end and the second connection 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 transmitting unit includes at least one transmitting element, which is mounted on the inner surface of the first top. The first connection end and the fourth connection end are disposed on the inner surface of the first top, and the first connection end is connected to the first electrode of the transmitting element, and the fourth connection end is connected to the second electrode of the transmitting element. The second connection end and the fifth connection end extend beyond the transmitter assembly or are disposed on the outer surface of the first housing body; the second connection end and the fifth connection end serve as external electrical connection interfaces of the transmitter assembly for circuit connection with the receiver assembly; The first encapsulation unit is located in the first groove and covers the transmitting end element, and is used to transmit the light emitted by the transmitting end element to the first opening end of the first groove; The transmitter assembly is installed in the second groove of the receiver assembly, and the first opening faces the inner surface of the second bottom of the second groove, aligning with the receiver unit on the inner surface of the second bottom; the size of the first opening is adapted to the receiver unit; the distance between the first encapsulation unit and the first opening is greater than a preset distance value, the preset distance value being determined according to the height of the receiver unit in the receiver assembly; The second connecting end and the fifth connecting end are disposed on the outer surface of the first side opposite to the first top; or the first housing body further includes a first bottom, the first bottom being disposed opposite to the first top, and the first bottom being provided with the first opening end of the first groove, the second connecting end and the fifth connecting end being disposed on the outer surface of the first bottom; The second connection terminal is used to connect to the thirteenth connection terminal disposed on the inner surface of the second bottom of the receiver assembly, and the fifth connection terminal is used to connect to the sixteenth connection terminal disposed on the inner surface of the second bottom of the receiver assembly.

2. The transmitter assembly as described in claim 1, characterized in that, The first housing body is an opaque component, or the inner wall of the first groove is provided with an opaque auxiliary component.

3. The transmitter assembly as described in claim 1, characterized in that, The first groove is cylindrical or conical, and the first bottom end and the first opening end of the first groove are parallel planes. The diameter of the first bottom end of the first groove is smaller than the diameter of the first opening end.

4. The transmitter assembly as described in any one of claims 1 to 3, characterized in that, The first encapsulation unit fills the first bottom region of the first groove, and the distance between the first bottom region and the first opening end of the first groove is greater than a preset distance value.

5. An optocoupler, characterized in that, Including the transmitter assembly as described in any one of claims 1 to 4, it further includes a receiver assembly, a second packaging unit, a third packaging unit, and a fourth packaging unit, wherein, The receiver assembly includes a second housing unit and a receiver unit; The second housing unit includes a second housing body, a second circuit unit, and a third circuit unit; The second housing body includes a second side portion and a second bottom portion. The second housing body is provided with a second groove. The second side portion and the second bottom portion surround each other to form the second groove. The second groove has a second opening end disposed opposite to the second bottom portion and a second bottom end disposed opposite to the second opening end. The second circuit unit includes at least one fifth connection unit and at least one sixth connection unit. The fifth connection unit includes a seventh connection terminal, an eighth connection terminal, and a ninth connection terminal connected between the seventh connection terminal and the eighth connection terminal. The sixth connection unit includes a tenth connection terminal, an eleventh connection terminal, and a twelfth connection terminal connected between the tenth connection terminal and the eleventh connection terminal. The third circuit unit includes at least one seventh connection unit and at least one eighth connection unit. The seventh connection unit includes 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 connection unit includes a sixteenth connection terminal, a seventeenth connection terminal, and an eighteenth connection terminal connected between the sixteenth connection terminal and the seventeenth connection terminal. The receiving unit includes at least one receiving element, which is mounted on the inner surface of the second bottom. The seventh connection terminal and the tenth connection terminal are disposed on the inner surface of the second bottom, and the seventh connection terminal is connected to the third electrode of the receiving element, and the tenth connection terminal is connected to the fourth electrode of the receiving element; the eighth connection terminal and the eleventh connection terminal extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler. The thirteenth and sixteenth connection terminals are disposed on the inner surface of the second bottom, and the thirteenth connection terminal is connected to the second connection terminal in the transmitter assembly, and the sixteenth connection terminal is connected to the fifth connection terminal in the transmitter assembly; the fourteenth and seventeenth connection terminals extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection with circuits outside the optocoupler. The transmitter assembly is installed in the second groove, and the first opening end of the first groove in the transmitter assembly faces the inner surface of the second bottom and is aligned with the receiver unit; The second encapsulation unit is located between the receiving element and the first encapsulation unit in the transmitting assembly, and is used to transmit the light transmitted from the first encapsulation unit to the receiving element; The third packaging unit is located within the second groove and covers the inner surface of the transmitter assembly and the second bottom. The fourth encapsulation unit is an opaque unit that covers the third encapsulation unit; or covers the third encapsulation unit and extends 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.

6. The optocoupler as described in claim 5, characterized in that, The eighth connection end, the eleventh connection end, the fourteenth connection end, and the seventeenth connection end are disposed on the outer surface of the second bottom.

7. The optocoupler as described in claim 5, characterized in that, The second encapsulation unit fills the area between the receiver element and the first encapsulation unit in the transmitter assembly.

8. The optocoupler as described in any one of claims 5 to 7, characterized in that, The second packaging unit and the third packaging unit are integrally formed.

9. A packaging method for an optocoupler, characterized in that, The packaging method for the optocoupler includes: Step 101: Fabricate the transmitter assembly as described in any one of claims 1 to 4; Step 102: Create the receiver component, specifically including: Step B1: Fabricate the 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 includes a second side and a second bottom, the second housing body is provided with a second groove, the second side and the second bottom surround to form the second groove, the second groove has a second opening end disposed opposite to the second bottom, and a second bottom end disposed opposite to the second opening end; The second circuit unit includes at least one fifth connection unit and at least one sixth connection unit. The fifth connection unit includes a seventh connection terminal, an eighth connection terminal, and a ninth connection terminal connected between the seventh connection terminal and the eighth connection terminal. The sixth connection unit includes a tenth connection terminal, an eleventh connection terminal, and a twelfth connection terminal connected between the tenth connection terminal and the eleventh connection terminal. The third circuit unit includes at least one seventh connection unit and at least one eighth connection unit. The seventh connection unit includes 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 connection unit includes a sixteenth connection terminal, a seventeenth connection terminal, and an eighteenth connection terminal connected between the sixteenth connection terminal and the seventeenth connection terminal. The seventh and tenth connecting ends are disposed on the inner surface of the second bottom; the thirteenth and sixteenth connecting ends are disposed on the inner surface of the second bottom; the eighth and eleventh connecting ends extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection to a circuit outside the optocoupler; the fourteenth and seventeenth connecting ends extend beyond the optocoupler or are disposed on the outer surface of the second housing body for connection to a circuit outside the optocoupler. Step B2: Install the receiving unit on the inner surface of the second bottom. The receiving unit includes at least one receiving element, which is mounted on the inner surface of the second bottom; and the seventh connecting end is connected to the third electrode of the receiving element, and the tenth connecting end is connected to the fourth electrode of the receiving element. Step 103: Install the transmitter assembly made in step 101 into the second groove, with the first opening end of the first groove in the transmitter assembly facing the inner surface of the second bottom, and aligning it with the receiver unit; the thirteenth connection end is connected to the second connection end in the transmitter assembly, and the sixteenth connection end is connected to the fifth connection end in the transmitter assembly; Step 104: A second encapsulation unit is disposed between the receiving end element and the first encapsulation unit in the transmitting end assembly. The second encapsulation unit is used to transmit the light transmitted from the first encapsulation unit to the receiving end element. Step 105: A third encapsulation unit is disposed on the inner surface of the second bottom, the third encapsulation unit covering the transmitter assembly and the inner surface of the second bottom; Step 106: A fourth packaging unit is provided on the third packaging unit. The fourth packaging unit is an opaque unit that covers the third packaging unit; or covers the third packaging unit and extends to the outer surface of the second housing body, except for the eighth connecting end, the eleventh connecting end, the fourteenth connecting end and the seventeenth connecting end.

10. The packaging method for the optocoupler as described in claim 9, characterized in that, Step 101 includes: Step A1: Fabricate the first shell unit; The first housing unit includes a first housing body and a first circuit unit; the first housing body includes a first side and a first top, the first housing body is provided with a first groove, the first side and the first top surround to form the first groove, the first groove has a first opening end disposed opposite to the first top; the first circuit unit includes at least one first connecting unit and at least one second connecting unit; the first connecting unit includes 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 includes 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 disposed on the inner surface of the first top; The second connecting end and the fifth connecting end extend beyond the first housing unit, or are disposed on the outer surface of the first housing body; Step A2: Install at least one transmitter element on the inner surface of the first top of the first housing body, and connect the first connection end to the first electrode of the transmitter element, and connect the fourth connection end to the second electrode of the transmitter element. Step A3: A first encapsulation unit is disposed within the first groove, the first encapsulation unit covering the emitting element, for transmitting the light emitted by the emitting element to the first opening end of the first groove; Step A3 includes: The transparent adhesive and the first preset admixture are mixed in a first preset ratio to form the first colloid; The first adhesive is filled into the bottom area of ​​the first groove by dispensing, and the distance between the bottom area and the first opening end of the first groove is greater than a preset distance value. The first colloid after filling is heated and molded.

11. The packaging method for the optocoupler as described in claim 9 or 10, characterized in that, Steps 104 and 105 are manufactured using a one-time molding process, including: The transparent adhesive and the second preset admixture are mixed in a second preset ratio to make a second colloid; A second encapsulation unit and a third encapsulation unit are disposed in the second groove by dispensing adhesive. The second encapsulation unit and the third encapsulation unit are integrally formed structures. The second encapsulation unit fills the space between the first encapsulation unit in the receiver component and the transmitter assembly. The third encapsulation unit covers the transmitter assembly and the inner surface of the second bottom.

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