Packaging shell and optical communication device

Abstract

The utility model relates to the technical field of packaging, in particular to a packaging shell and an optical communication device. The packaging shell comprises a shell main body, a first adhesive layer and a second adhesive layer. Wherein the shell main body comprises at least two communicating areas communicating the interior and the exterior of the shell main body, the interior of the shell main body is used for installing a photoelectric chip, the first adhesive layer is arranged on one side, close to the interior of the shell main body, in the communicating areas, and the second adhesive layer is arranged on one side, close to the exterior of the shell main body, in the communicating areas, so that the first adhesive layer and the second adhesive layer are matched; the communication area can be sealed. Specifically, the second adhesive layer can isolate most of external water vapor outside the shell main body, the first adhesive layer is a moisture curing type polyurethane adhesive layer, and in the life cycle of the packaging shell, the first adhesive layer can absorb external water permeating through the second adhesive layer and convert the water into carbon dioxide, so that the water vapor content in the packaging shell is effectively controlled, and the service life of the packaging shell is prolonged. And the influence of external water vapor on the photoelectric chip in the packaging shell is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a packaging shell and an optical communication device. Background Art

[0002] Optical devices are equipped with optoelectronic chips, which are very sensitive to water. Water vapor that penetrates into the optical device will seriously affect the service life of the optical device.

[0003] Existing optical devices typically use hermetic packaging to control the water vapor content in the package to below 5000 PPM, thereby preventing external water vapor from affecting the optoelectronic chips inside the optical device. However, the cost of hermetic packaging is too high. To reduce costs, some manufacturers use glue sealing, installing a sealant layer at the seal of the shell to prevent external water vapor from penetrating into the interior of the optical device. However, this has the disadvantage that the sealant layer does not have a good sealing effect and cannot effectively isolate external water vapor. As the optical device is used for a longer time, some external water vapor can still penetrate the sealant layer into the optical device, causing the water vapor in the package to affect the service life of the optical device. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a packaging shell and an optical communication device to solve the problem in the prior art that the sealing effect of the sealant layer is poor and the external water vapor cannot be effectively isolated.

[0005] The packaging shell provided by the embodiment of the present invention includes: a shell body, which includes at least two communication areas connecting the interior and exterior of the shell body, and the interior of the shell body is used to install an optoelectronic chip; a first adhesive layer, which is arranged on a side of the communication area close to the interior of the shell body; a second adhesive layer, which is arranged on a side of the communication area close to the exterior of the shell body, and the first adhesive layer and the second adhesive layer cooperate to seal the communication area; wherein, the first adhesive layer is a moisture-curing polyurethane adhesive layer, and the first adhesive layer is used to convert water that penetrates through the second adhesive layer into carbon dioxide.

[0006] Optionally, the shell body is provided with a mounting edge, the mounting edge includes a first side wall and a second side wall, the angle between the second side wall and the first side wall is greater than or equal to 90°, and the packaging shell also includes a cover plate, a gap is provided between the cover plate and the first side wall and the second side wall to define a connecting area; wherein, the first adhesive layer is provided on the first side wall, the cover plate is provided on the first adhesive layer, the cover plate, the first adhesive layer and the second side wall define a first mounting groove, and the second adhesive layer is provided in the first mounting groove.

[0007] Optionally, the first side wall is provided with a second mounting groove, and the first adhesive layer is partially accommodated in the second mounting groove.

[0008] Optionally, a length of the first adhesive layer along the length direction of the first side wall is greater than or equal to 2 mm.

[0009] Optionally, a side of the cover plate away from the first side wall is flush with a side of the second side wall away from the first side wall.

[0010] Optionally, the shell body is further provided with a mounting hole, which extends toward the inside and outside of the shell body to form a mounting tube, and the mounting tube defines another communication area. The mounting tube includes a first mounting section connected to the inside of the shell body and a second mounting section connected to the outside of the shell body. The mounting tube is used to install cables, and the first mounting section is provided with the first adhesive layer, and the second mounting section is provided with the second adhesive layer.

[0011] Optionally, the first mounting section is provided with a first injection hole, which is used to inject the first adhesive layer into the mounting tube, and the second mounting section is provided with a second injection hole, which is used to inject the second adhesive layer into the mounting tube.

[0012] Optionally, the lengths of the first adhesive layer and the second adhesive layer along the length direction of the mounting tube are both greater than or equal to 1 mm.

[0013] Optionally, the mounting tube and the shell body are integrally formed.

[0014] The utility model also discloses an optical communication device, comprising the packaging shell as described above.

[0015] Compared with the prior art, the beneficial effect of the packaging shell provided by the embodiment of the present invention is that: the packaging shell of the present invention includes a shell body, a first adhesive layer and a second adhesive layer. Among them, the shell body includes at least two connecting areas connecting the inside and outside of the shell body, and the inside of the shell body is used to install the optoelectronic chip. By arranging the first adhesive layer on the side close to the inside of the shell body in the connecting area, and arranging the second adhesive layer on the side close to the outside of the shell body in the connecting area, the first adhesive layer and the second adhesive layer cooperate to seal the connecting area. Specifically, the second adhesive layer has better sealing performance and can isolate most of the external water vapor outside the shell body. The first adhesive layer is a moisture-curing polyurethane adhesive layer. When the encapsulation is completed, most of the polyurethane groups in the first adhesive layer do not react. Therefore, during the life cycle of the packaging shell, the first adhesive layer can absorb the water that penetrates from the outside through the second adhesive layer and convert it into carbon dioxide, thereby effectively controlling the water vapor content in the package and preventing the external water vapor from affecting the optoelectronic chip inside the packaging shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0017] Figure 1 This is a schematic diagram of a packaging shell provided by an embodiment of the present utility model;

[0018] Figure 2 This is another schematic diagram of the packaging shell provided by an embodiment of the present utility model;

[0019] Figure 3 This is another schematic diagram of the packaging shell provided by an embodiment of the present utility model;

[0020] Figure 4 This is another schematic diagram of the packaging shell provided by an embodiment of the present utility model.

[0021] The reference numerals in the figures are:

[0022] 100. Encapsulation shell;

[0023] 1. Shell body; 11. Connecting area; 111. First mounting groove; 12. Mounting edge; 121. First sidewall; 1211. Second mounting groove; 122. Second sidewall; 13. Mounting tube; 131. First mounting section; 1311. First injection hole; 132. Second mounting section; 1321. Second injection hole; 2. First adhesive layer; 3. Cover plate; 4. Second adhesive layer;

[0024] 200. Cable. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. Now, in conjunction with the accompanying drawings, a detailed description of the preferred embodiments of the present utility model will be given.

[0026] The present invention provides a packaging shell 100. Figures 1 to 4 As shown, the packaging shell 100 includes a shell body 1, a first adhesive layer 2, and a second adhesive layer 4. The shell body 1 includes at least two communication areas 11 connecting the interior and exterior of the shell body 1. The interior of the shell body 1 is used to mount an optoelectronic chip. The first adhesive layer 2 is disposed on one side of the communication areas 11 closer to the interior of the shell body 1, and the second adhesive layer 4 is disposed on the other side of the communication areas 11 closer to the exterior of the shell body 1. The first adhesive layer 2 and the second adhesive layer 4 cooperate to seal the communication areas 11. The first adhesive layer 2 is a moisture-curable polyurethane adhesive layer, which is used to convert water that penetrates through the second adhesive layer into carbon dioxide.

[0027] Specifically, the housing body 1 includes at least two communication areas 11 connecting the interior and exterior of the housing body 1. Connection cables 200 can be installed through these communication areas 11, allowing other devices to connect to the optoelectronic chip within the housing body 1, achieving inter-device connectivity and communication. A first adhesive layer 2 is disposed on one side of the communication area 11 near the interior of the housing body 1, and a second adhesive layer 4 is disposed on the other side of the communication area 11 near the exterior of the housing body 1. The first and second adhesive layers 2 and 4 cooperate to seal the communication area 11. To facilitate placement of the first and second adhesive layers 2 and 4 in the communication area 11, they are preferably made of hot melt adhesive.

[0028] Specifically, the second adhesive layer 4 has excellent sealing properties and can isolate most of the external water vapor outside the shell body 1. The first adhesive layer 2 is a polyurethane (R-NCO) adhesive layer. When the package is completed, most of the polyurethane groups in the first adhesive layer have not reacted. Therefore, during the life cycle of the package shell, the first adhesive layer 2 can absorb the water that penetrates from the outside through the second adhesive layer 4, and utilize the reaction principle of R-NCO+H2OR→R-NH2+CO2 to convert the water that penetrates from the outside through the second adhesive layer 4 into carbon dioxide, thereby effectively controlling the water vapor content in the package to below 5000PPM, preventing the external water vapor from affecting the optoelectronic chip inside the package shell 100. It should be noted that the first adhesive layer 2 utilizes the above-mentioned reaction principle, and the first adhesive layer 2 after the reaction will only solidify, and the size of the first adhesive layer 2 will not be reduced.

[0029] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the shell body 1 is provided with a mounting edge 12, the mounting edge 12 includes a first side wall 121 and a second side wall 122, the angle between the second side wall 122 and the first side wall 121 is greater than or equal to 90°, the packaging shell 100 also includes a cover plate 3, and a gap is provided between the cover plate 3 and the first side wall 121 and the second side wall 122 to define a connecting area 11; wherein, the first adhesive layer 2 is provided on the first side wall 121, the cover plate 3 is provided on the first adhesive layer 2, the cover plate 3, the first adhesive layer 2 and the second side wall 122 define a first mounting groove 111, and the second adhesive layer 4 is provided in the first mounting groove 111.

[0030] Specifically, the mounting edge 12 includes a first side wall 121 and a second side wall 122. The included angle between the second side wall 122 and the first side wall 121 is greater than or equal to 90 degrees, so as to provide support and mounting positions for the cover plate 3, the first adhesive layer 2 and the second adhesive layer 4. It is convenient to install the cover plate 3, the first adhesive layer 2 and the second adhesive layer 4 at the mounting edge 12 to seal the interior of the package housing 100. The mounting process of the cover plate 3, the first adhesive layer 2 and the second adhesive layer 4 includes firstly installing the cover plate 3, the first adhesive layer 2 and the second adhesive layer 4 along the length direction of the first side wall 121 ( Figure 1A second adhesive layer 4 is provided (in the X direction in FIG), and before the second adhesive layer 4 solidifies, a cover plate 3 is provided on the second adhesive layer 4, and a gap is left between the cover plate 3 and the second side wall 122, thereby defining a first mounting groove 111 between the cover plate 3, the first adhesive layer 2, and the second side wall 122 to facilitate the provision of the second adhesive layer 4.

[0031] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the first side wall 121 defines a second mounting groove 1211 , and a portion of the first adhesive layer 2 is accommodated in the second mounting groove 1211 .

[0032] Specifically, by setting a second mounting groove 1211 on the first side wall 121, when the first adhesive layer 2 is set on the first side wall 121, the first adhesive layer 2 can be partially accommodated in the second mounting groove 1211, thereby increasing the connection strength between the first adhesive layer 2 and the first side wall 121, ensuring the stability of the overall structure of the packaging shell 100 and the firmness of the connection.

[0033] It is worth mentioning that the second side wall 122 can be provided with a third mounting groove (not shown) so that the second adhesive layer 4 can be partially accommodated in the third mounting groove, thereby increasing the connection strength between the second adhesive layer 4 and the second side wall 122 and ensuring the sealing effect of the second adhesive layer 4.

[0034] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the length of the first adhesive layer 2 along the length direction of the first side wall 121 is greater than or equal to 2 mm.

[0035] Specifically, the length of the first adhesive layer 2 along the length direction of the first side wall 121 is greater than or equal to 2 mm. The first adhesive layer 2 of this length can ensure good bonding effect between the first adhesive layer 2 and the first side wall 121 and the cover plate 3 without taking up too much space.

[0036] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the side of the cover plate 3 away from the first side wall 121 is flush with the side of the second side wall 122 away from the first side wall 121. Thus, the filling height of the second adhesive layer 4 can be defined, so as to facilitate the arrangement of the second adhesive layer 4.

[0037] In addition, after the second adhesive layer 4 is set, the side of the second adhesive layer 4 close to the outside of the shell body 1 can be flush with the side of the cover 3 away from the first side wall 121 and the side of the second side wall 122 away from the first side wall 121, so that the surface of the packaging shell 100 can remain flat, thereby increasing the neatness and beauty of the overall appearance of the packaging shell 100.

[0038] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the shell body 1 is also provided with a mounting hole, which extends toward the inside and outside of the shell body 1 to form a mounting tube 13. The mounting tube 13 defines another communication area 11. The mounting tube 13 includes a first mounting section 131 that is connected to the inside of the shell body 1 and a second mounting section 132 that is connected to the outside of the shell body 1. The mounting tube 13 is used to install the cable 200. The first mounting section 131 is provided with a first adhesive layer 2, and the second mounting section 132 is provided with a second adhesive layer 4.

[0039] Specifically, the housing body 1 is further provided with a mounting hole, which extends toward the interior and exterior of the housing body 1 to form a mounting tube 13. The mounting tube 13 defines another communication area 11, thereby providing a mounting location for the cable 200, the first adhesive layer 2, and the second adhesive layer 4. The first adhesive layer 2 is disposed in a first mounting section 131 communicating with the interior of the housing body 1, and the second adhesive layer 4 is disposed in a second mounting section 132 communicating with the exterior of the housing body 1. This allows the first adhesive layer 2 and the second adhesive layer 4 to cooperate to seal the mounting tube 13 and the cable 200 therein.

[0040] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the first installation section 131 is provided with a first injection hole 1311 for injecting the first adhesive layer 2 into the installation tube 13 , and the second installation section 132 is provided with a second injection hole 1321 for injecting the second adhesive layer 4 into the installation tube 13 .

[0041] Specifically, compared to directly injecting the first adhesive layer 2 and the second adhesive layer 4 from the openings at both ends of the mounting tube 13, by implementing this embodiment, the first adhesive layer 2 can be injected into the first mounting section 131 through the first injection hole 1311, and the second adhesive layer 4 can be injected into the second mounting section 132 through the second injection hole 1321, which can avoid the cable 200 in the mounting tube 13 interfering with the injection of the first adhesive layer 2 and the second adhesive layer 4, so that the setting of the first adhesive layer 2 and the second adhesive layer 4 is more convenient and quick, and it is also easy to control the injection amount of the first adhesive layer 2 and the second adhesive layer 4.

[0042] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the first adhesive layer 2 and the second adhesive layer 4 are arranged along the length direction of the mounting tube 13 ( Figure 1 The lengths set in the X direction are all greater than or equal to 1 mm.

[0043] Specifically, the lengths of the first adhesive layer 2 and the second adhesive layer 4 along the length direction of the mounting tube 13 are both greater than or equal to 1 mm, which can ensure that the first adhesive layer 2 and the second adhesive layer 4 have sufficient sealing effect.

[0044] Furthermore, as a specific implementation in some embodiments of the present invention, Figures 1 to 4 As shown, the mounting tube 13 is integrally formed with the shell body 1 .

[0045] Specifically, the mounting tube 13 is integrally formed with the housing body 1, which allows for a tighter fit between the mounting tube 13 and the housing body 1, reducing any gaps that may exist between the mounting tube 13 and the housing body 1, thereby effectively improving the seal between the mounting tube 13 and the housing body 1. Furthermore, this helps reduce loosening or displacement between the mounting tube 13 and the housing body 1, thereby improving the stability and reliability of the overall structure.

[0046] The present invention also discloses an optical communication device, which includes the above-mentioned packaging housing 100. The beneficial effects of the optical communication device using the above-mentioned packaging housing 100 have been described above when describing the packaging housing 100, and will not be repeated in this embodiment.

[0047] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art may modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A packaging shell, characterized in that: include: A shell body, comprising at least two communicating areas communicating with the interior and exterior of the shell body, wherein the interior of the shell body is used for mounting an optoelectronic chip; a first adhesive layer, which is provided on one side of the communication area close to the interior of the shell body; a second adhesive layer provided on a side of the communication area close to the exterior of the shell body, the first adhesive layer and the second adhesive layer cooperate to seal the communication area; Wherein, the first adhesive layer is a moisture-curable polyurethane adhesive layer, and the first adhesive layer is used to convert water that penetrates through the second adhesive layer into carbon dioxide.

2. The packaging shell according to claim 1, characterized in that The shell body is provided with a mounting edge, the mounting edge includes a first side wall and a second side wall, the angle between the second side wall and the first side wall is greater than or equal to 90 degrees, and the packaging shell further includes a cover plate, a gap is provided between the cover plate and the first side wall and the second side wall to define the communication area; The first adhesive layer is provided on the first side wall, the cover plate is provided on the first adhesive layer, the cover plate, the first adhesive layer and the second side wall define a first mounting groove, and the second adhesive layer is provided in the first mounting groove.

3. The packaging shell according to claim 2, characterized in that The first side wall is provided with a second mounting groove, and the first adhesive layer is partially accommodated in the second mounting groove.

4. The packaging shell according to claim 2, characterized in that The length of the first adhesive layer along the length direction of the first side wall is greater than or equal to 2 mm.

5. The packaging shell according to claim 2, characterized in that A side of the cover plate away from the first side wall is flush with a side of the second side wall away from the first side wall.

6. The packaging shell according to any one of claims 1 to 5, characterized in that: The shell body is also provided with a mounting hole, which extends toward the inside and outside of the shell body to form a mounting tube, and the mounting tube defines another communication area. The mounting tube includes a first mounting section communicating with the inside of the shell body and a second mounting section communicating with the outside of the shell body. The mounting tube is used to install cables, and the first mounting section is provided with the first adhesive layer, and the second mounting section is provided with the second adhesive layer.

7. The packaging shell according to claim 6, characterized in that The first installation section is provided with a first injection hole for injecting the first adhesive layer into the installation tube. The second installation section is provided with a second injection hole for injecting the second adhesive layer into the installation tube.

8. The packaging shell according to claim 6, characterized in that The lengths of the first adhesive layer and the second adhesive layer along the length direction of the mounting tube are both greater than or equal to 1 mm.

9. The packaging shell according to claim 6, characterized in that: The mounting tube is integrally formed with the shell body.

10. An optical communication device, characterized in that: The packaging shell comprises the packaging shell according to any one of claims 1 to 8.

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