CN215183902U - Large-light-window lens packaging structure of gold-tin solder - Google Patents
Large-light-window lens packaging structure of gold-tin solder Download PDFInfo
- Publication number
- CN215183902U CN215183902U CN202120784518.4U CN202120784518U CN215183902U CN 215183902 U CN215183902 U CN 215183902U CN 202120784518 U CN202120784518 U CN 202120784518U CN 215183902 U CN215183902 U CN 215183902U
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- Prior art keywords
- optical window
- cover plate
- window lens
- metal cover
- gold
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- 229910000679 solder Inorganic materials 0.000 title claims abstract description 47
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 22
- JVPLOXQKFGYFMN-UHFFFAOYSA-N gold tin Chemical compound [Sn].[Au] JVPLOXQKFGYFMN-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 83
- 239000002184 metal Substances 0.000 claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 230000005496 eutectics Effects 0.000 claims abstract description 30
- 238000005219 brazing Methods 0.000 claims abstract description 13
- 239000010980 sapphire Substances 0.000 claims description 4
- 229910052594 sapphire Inorganic materials 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 description 13
- 238000007789 sealing Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
The utility model belongs to the technical field of photoelectron gas tightness packaging equipment, and discloses a big optical window lens packaging structure of gold tin solder, which comprises a metal cover plate which is in rectangular structural design and has a central opening, wherein the metal cover plate is provided with a groove, a central opening optical window bracket is arranged in the groove, and one side of the optical window bracket, which is close to the metal cover plate, is provided with an optical window lens; the metal cover plate and the optical window support are fixed through AgCu eutectic solder in a brazing mode, and the optical window support and the optical window lens are fixed through AuSn eutectic solder in a brazing mode. The utility model relates to an ingenious, rational in infrastructure, guaranteed big light window lens packaging structure's good gas tightness, and improved big light window lens packaging structure's use mission, improved market competition.
Description
Technical Field
The utility model belongs to the technical field of photoelectron gas tightness encapsulation equipment, especially, relate to a big light window lens packaging structure of gold tin solder.
Background
In the field of optoelectronic hermetic packaging, an optical window lens cover plate or an optical window of a product needs to be combined with a metal tube cap or a metal cavity to form an optical window structure for hermetic packaging, and because a semiconductor chip is sensitive to a humid environment, harmful gases and pollutants, the device often needs very high hermetic requirements, and along with the rapid development of the semiconductor industry, the size of an optical window lens is developing towards a large-size light-transmitting area and is mainly applied to industries such as infrared guidance, laser television and the like.
The main solution of the current air tightness is to use an organic adhesive (for example, epoxy resin) combination mode to complete the sealing between the optical window and the metal, which is widely applied in various sealing and bonding industries, and can bond various non-metals such as metal, ceramic, glass, wood, plastic, stone and the like, but the sealing between the optical window and the metal is easily subjected to physical or chemical changes under the action of external factors in the using process, so that the high polymer material of the sealing and bonding sealing structure is brittle, cracked, discolored and cracked, delaminated and dropped, and gradually deteriorated in performance, so that the performance is lost, the sealing performance and the mechanical fixing performance of the optical window and the metal are lost, and the overall product performance is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a big light window lens packaging structure of gold tin solder to solve the problem mentioned in the above-mentioned background art.
For realizing the purpose of the above utility model, the technical scheme adopted is as follows:
a large optical window lens packaging structure of gold-tin solder comprises: the light window lens comprises a metal cover plate which is designed into a rectangular structure and is provided with an opening in the center, wherein a groove is formed in the metal cover plate, a light window bracket with an opening in the center is arranged in the groove, and a light window lens is arranged on one side, close to the metal cover plate, of the light window bracket; the metal cover plate and the optical window support are fixed through AgCu eutectic solder in a brazing mode, and the optical window support and the optical window lens are fixed through AuSn eutectic solder in a brazing mode and used for guaranteeing good air tightness of the packaging structure.
The utility model discloses further set up to: the thickness of the bottom of the groove is 0.12mm, and the groove is used for effectively reducing impact force borne by the optical window lens.
The utility model discloses further set up to: after the metal cover plate and the optical window bracket are fixed through AgCu eutectic solder in a brazing mode, the metal cover plate and the optical window bracket are plated with nickel and then plated with gold, and the good welding performance of the AuSn eutectic solder is guaranteed.
The utility model discloses further set up to: the optical window lens is made of a metalized sapphire material.
The utility model discloses further set up to: the metal cover plate, the optical window support and the optical window lens are concentrically arranged.
The utility model discloses further set up to: and sputtering gold treatment is carried out on four side edge areas of the optical window lens, so that the welding performance of the AuSn eutectic solder of the optical window lens is ensured.
The utility model discloses further set up to: the thickness of the optical window lens is smaller than the height of the optical window bracket relative to the metal cover plate.
In summary, compared with the prior art, the utility model discloses a large optical window lens packaging structure of gold-tin solder, wherein a groove is arranged on a metal cover plate, an optical window bracket with a central opening is arranged in the groove, and an optical window lens is arranged on one side of the optical window bracket, which is close to the metal cover plate; the metal cover plate and the optical window support are fixed through AgCu eutectic solder in a brazing mode, and the optical window support and the optical window lens are fixed through AuSn eutectic solder in a brazing mode. Through this setting, guaranteed big optical window lens packaging structure's good gas tightness promptly, and improved big optical window lens packaging structure's use mission, improved market competition.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a large optical window lens package structure of gold-tin solder according to the present embodiment;
fig. 2 is a schematic overall structure diagram of a large optical window lens package structure of gold-tin solder according to the present embodiment;
fig. 3 is a cross-sectional view of a large optical window lens package structure of gold-tin solder according to this embodiment.
Reference numerals: 1. a metal cover plate; 11. a groove; 2. a light window bracket; 3. an optical window lens; 4. AgCu eutectic solder; 5. and (3) AuSn eutectic solder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, it is to be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.
A large optical window lens package structure of gold-tin solder, as shown in fig. 1-3, comprising: the light window structure comprises a metal cover plate 1 which is designed in a rectangular structure and is provided with an opening at the center, a groove 11 is formed in the metal cover plate 1, a light window bracket 2 with an opening at the center is arranged in the groove 11, and a light window lens 3 is arranged on one side, close to the metal cover plate 1, of the light window bracket 2; the metal cover plate 1 and the optical window support 2 are fixed through AgCu eutectic solder 4 in a brazing mode, the optical window support 2 and the optical window lens 3 are fixed through AuSn eutectic solder 5 in a brazing mode, namely the AgCu eutectic solder 4 and the AuSn eutectic solder 5 are subjected to brazing treatment, and good air tightness of the packaging structure is guaranteed.
In the specific implementation process, the thickness of the bottom of the groove 11 is 0.12mm, and the groove is used for effectively reducing the impact force on the optical window lens 3.
Further, after the metal cover plate 1 and the optical window bracket 2 are fixed by brazing through the AgCu eutectic solder 4, the metal cover plate 1 and the optical window bracket 2 are plated with gold after being plated with nickel, and the good welding performance of the AuSn eutectic solder 5 is guaranteed.
It should be noted that the optical window lens 3 is made of a metallized sapphire material, and sapphire glass has good thermal characteristics, excellent electrical characteristics and dielectric characteristics, chemical corrosion resistance, high temperature resistance, good heat conduction, high hardness, infrared transmittance and good chemical stability so as to ensure light transmittance and strong wear resistance.
The metal cover plate 1, the optical window support 2 and the optical window lens 3 are concentrically arranged to ensure that the structure is neat.
Further, the four side regions of the optical window lens 3 are subjected to sputtering gold treatment for ensuring the welding performance of the AuSn eutectic solder 5 of the optical window lens 3.
In a specific implementation, the thickness of the optical window lens 3 is smaller than the height of the optical window bracket 2 relative to the metal cover plate 1.
In the embodiment, AgCu eutectic solder 4 is placed between the metal-connected cover plate 1 and the optical window bracket 2, and the special assembly fixture is sintered by a special tunnel furnace under the conditions of well controlled temperature, time and atmosphere, so that the requirement of air tightness can be met while the strength is ensured;
the AuSn eutectic solder 5 is placed between the optical window bracket 2 and the optical window lens 3, and the special assembly fixture is sintered under the conditions of well controlled temperature, time and atmosphere through a special tunnel furnace, so that the strength is ensured and the requirement of air tightness can be met;
in the two times of welding of the embodiment, the first welding adopts AgCu eutectic solder 4 for welding, the welding performance can be ensured for a long time at the temperature of more than 450 ℃, the second welding adopts AuSn eutectic solder 5 for welding, the welding is carried out at the temperature of 350 ℃, the requirement of the product air tightness is ensured under the condition that no welding seam exists at the welding position, the yield strength of the AuSn alloy is very high under the condition of room temperature, the strength of the AuSn alloy can meet the requirement of the air tightness even at the temperature of 250-260 ℃, and in addition, the AuSn eutectic solder 5 also has high corrosion resistance, high creep resistance and good heat conduction and electric conductivity.
To sum up, the utility model discloses following beneficial effect has: the utility model discloses a big optical window lens packaging structure of gold tin solder, a groove 11 is arranged on a metal cover plate 1, an optical window bracket 2 with a central opening is arranged in the groove 11, and an optical window lens 3 is arranged on the optical window bracket 2 and on one side close to the metal cover plate 1; the metal cover plate 1 and the optical window support 2 are fixed by soldering through AgCu eutectic solder 4, and the optical window support 2 and the optical window lens 3 are fixed by soldering through AuSn eutectic solder 5, namely, the metal cover plate and the optical window support are fixed by soldering through AgCu eutectic solder 4 and AuSn eutectic solder 5. Through this setting, guaranteed big optical window lens packaging structure's good gas tightness promptly, and improved big optical window lens packaging structure's use mission, improved market competition.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (6)
1. A large optical window lens packaging structure of gold-tin solder is characterized by comprising: the light window lens comprises a metal cover plate which is designed into a rectangular structure and is provided with an opening in the center, wherein a groove is formed in the metal cover plate, a light window bracket with an opening in the center is arranged in the groove, and a light window lens is arranged on one side, close to the metal cover plate, of the light window bracket; the metal cover plate and the optical window support are fixed through AgCu eutectic solder in a brazing mode, and the optical window support and the optical window lens are fixed through AuSn eutectic solder in a brazing mode and used for guaranteeing good air tightness of the packaging structure.
2. The package structure of claim 1, wherein the bottom of the groove has a thickness of 0.12mm for effectively reducing the impact force on the optical window lens.
3. The large optical window lens packaging structure of gold-tin solder according to claim 1, wherein the metal cover plate and the optical window bracket are fixed by AgCu eutectic solder soldering.
4. The large optical window lens package structure of gold-tin solder according to claim 1, wherein the optical window lens is made of a metallized sapphire material.
5. The large optical window lens package structure of gold-tin solder according to claim 1, wherein the metal cover plate, the optical window bracket and the optical window lens are concentrically disposed.
6. The large optical window lens package of gold-tin solder as claimed in claim 1, wherein the thickness of the optical window lens is smaller than the height of the optical window bracket relative to the metal cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120784518.4U CN215183902U (en) | 2021-04-16 | 2021-04-16 | Large-light-window lens packaging structure of gold-tin solder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120784518.4U CN215183902U (en) | 2021-04-16 | 2021-04-16 | Large-light-window lens packaging structure of gold-tin solder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215183902U true CN215183902U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120784518.4U Active CN215183902U (en) | 2021-04-16 | 2021-04-16 | Large-light-window lens packaging structure of gold-tin solder |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116435375A (en) * | 2023-06-14 | 2023-07-14 | 苏州中航天成电子科技有限公司 | Stamping cover plate structure for self-positioning of optical window |
-
2021
- 2021-04-16 CN CN202120784518.4U patent/CN215183902U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116435375A (en) * | 2023-06-14 | 2023-07-14 | 苏州中航天成电子科技有限公司 | Stamping cover plate structure for self-positioning of optical window |
| CN116435375B (en) * | 2023-06-14 | 2023-09-15 | 苏州中航天成电子科技有限公司 | Stamping cover plate structure for self-positioning of optical window |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 101, Unit 1, Building C, No. 6 Juliu Road, Zhukeng Community, Longtian Street, Pingshan District, Shenzhen City, Guangdong Province, China Patentee after: Shenzhen Honggang Optoelectronic Packaging Technology Co.,Ltd. Address before: 518000 1-3 / F, C1 building, long industrial park, JuLongshan No.3 Road, big industrial zone, Longtian street, Pingshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN HONGGANG MECHANISM & EQUIPMENT CO.,LTD. |
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| CP03 | Change of name, title or address |