CN215061395U - Airtight packaging structure integrating plane optical window and spherical lens - Google Patents
Airtight packaging structure integrating plane optical window and spherical lens Download PDFInfo
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- CN215061395U CN215061395U CN202121440513.6U CN202121440513U CN215061395U CN 215061395 U CN215061395 U CN 215061395U CN 202121440513 U CN202121440513 U CN 202121440513U CN 215061395 U CN215061395 U CN 215061395U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 57
- 229910052594 sapphire Inorganic materials 0.000 claims abstract description 45
- 239000010980 sapphire Substances 0.000 claims abstract description 45
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims description 14
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 5
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 description 31
- 239000002184 metal Substances 0.000 description 31
- 238000003466 welding Methods 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 230000005496 eutectics Effects 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000005391 art glass Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the field of photoelectron packaging, and discloses an airtight packaging structure integrating a plane optical window and a spherical lens and a manufacturing method thereof, wherein the structure comprises a substrate, a light-emitting chip, the plane optical window, the lens and a pressing block; the substrate is provided with a groove, and the light-emitting chip is arranged in the groove; the plane light window comprises a sapphire sheet and a frame, the plane light window is arranged right above the groove, the outer side of the sapphire sheet is fixedly connected with the inner side of the frame, and the bottom surface of the frame is connected with the substrate; the lens is arranged on the upper surface of the plane light window, and a lens fixing edge is arranged on the extension part at the bottom of the lens; the pressing block is fixedly connected with the frame, and the lens is fixed on the plane light window along the edge. Through the utility model discloses an airtight packaging structure of plane light window and globular lens has replaced traditional sapphire lens structure, has reduced optical lens manufacturing cost, and is high for traditional lens structure gas tightness simultaneously.
Description
Technical Field
The utility model belongs to photoelectron encapsulation field particularly, relates to an airtight packaging structure of integrated plane light window and ball lens.
Background
With the maturity of ultraviolet LED chip technology, the application of ultraviolet LED is more and more extensive, and the ultraviolet LED is widely applied in the fields of sterilization and disinfection, air purification, sewage treatment, plant production, medical treatment and the like. However, in order to obtain higher energy ultraviolet rays in applications, it is necessary to focus light using a ball lens. At present, quartz glass and sapphire are used as materials capable of reaching more than 90% of transmittance in UV (ultraviolet) wave band (190-380 nm). However, the linear thermal expansion coefficient ((5.3-5.8) × 10^ (-7)/K) of the quartz glass is small, while the linear thermal expansion coefficient of common solder and metal is 3-10 × 10^ (-6)/K, which is different by one order of magnitude, after the quartz glass is bonded with other materials, the quartz glass cracks due to different material deformation under the action of high and low temperature, and the inorganic airtight packaging can not be realized; and use silica gel encapsulation, ultraviolet ray has ageing damage's characteristic to organic material, leads to the lens to drop, and moisture and harmful gas get into the lamp pearl and can lead to the chip impaired, and the short-lived reliability is poor, can not general application. While the linear expansion coefficient of sapphire is 5.8 multiplied by 10 < -6 >/K, the inorganic airtight packaging can be realized, but the manufacturing cost of the sapphire lens is too high, and the sapphire lens cannot be generally applied to civil products.
SUMMERY OF THE UTILITY MODEL
To the poor problem of prior art glass and sapphire gas tightness, the utility model provides an airtight packaging structure of integrated plane optical window and globular lens.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
an airtight packaging structure integrating a planar optical window and a spherical lens comprises a substrate, a light-emitting chip, the planar optical window, the lens and a pressing block;
the substrate is provided with a groove, and the light-emitting chip is arranged in the groove;
the plane light window comprises a sapphire sheet and a frame, the plane light window is arranged right above the groove, the outer side of the sapphire sheet is fixedly connected with the inner side of the frame, and the bottom surface of the frame is connected with the substrate;
the lens is arranged on the upper surface of the plane light window, and a lens fixing edge is arranged on the extension part at the bottom of the lens;
the pressing block is fixedly connected with the frame, and the lens is fixed on the plane light window along the edge.
Further, the sapphire sheet upper surface is flush with the metal frame upper surface.
Further, the pressing block and the gap of the frame clamp and fix the lens fixing edge.
Further, the substrate is a 3D ceramic substrate.
Furthermore, the 3D ceramic substrate is made of an aluminum oxide or aluminum nitride ceramic material.
A method for manufacturing an airtight package integrating a planar optical window and a spherical lens includes the steps:
the substrate is provided with a groove, and the light-emitting chip is fixed in the groove of the substrate;
fixedly connecting the plane light window on the substrate, and sealing the space above the groove;
the lens is fixedly connected on the plane light window.
Further, the method also comprises the following steps: after the plane optical window is fixedly connected to the substrate, the air tightness of the groove space sealed by the plane optical window and the substrate is detected.
Further, the light emitting chip is fixed in the substrate groove in a die bonding or eutectic mode.
Further, the step of fixedly connecting the planar light window to the substrate includes:
s1, fixing the frame of the plane light window through a clamp;
s2, the sapphire sheet is put into the frame, and the upper surface of the sapphire sheet is ensured to be flush with the upper surface of the frame;
and S3, finally, placing a low-temperature welding ring between the sapphire sheet and the frame, and carrying out fusion sealing in a reducing atmosphere.
Further, the step of fixedly connecting the lens to the plane light window includes:
s11, placing the lower surface of the lens on the plane light window in a manner of clinging to the upper surface of the sapphire sheet;
s12, sleeving a pressing block on the frame of the lens fixing edge and the plane light window;
and S13, welding the pressing block on the frame of the plane light window.
Compared with the prior art, the utility model, following beneficial effect has:
1. through the utility model discloses an airtight packaging structure of plane light window and spherical lens has replaced traditional sapphire lens structure, has reduced optical lens manufacturing cost.
2. The quartz lens with lower cost is used for focusing light, the sapphire plane optical window ensures inorganic airtight packaging, and the transmittance of the combined structure in the UVC wave band is more than 90 percent, so that the combined structure has the advantages of simple manufacture and low cost.
Drawings
Fig. 1 is a schematic view of an overall structure of an airtight package structure integrating a planar optical window and a spherical lens according to the present invention;
FIG. 2 is a flow chart of a method for manufacturing an airtight package of an integrated planar optical window and a spherical lens according to the present invention;
FIG. 3 is a flowchart illustrating the steps of the present invention for fixing a flat optical window on a substrate;
fig. 4 is a flowchart illustrating steps of the lens of the present invention being fixed to the flat light window.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Example 1
As shown in fig. 1, an airtight package structure integrating a planar optical window and a spherical lens includes a substrate 1, a light emitting chip 2, a planar optical window 3, a lens 4 and a compact 5; the substrate 1 is provided with a groove, and the light-emitting chip 2 is arranged in the groove; the plane light window 3 comprises a sapphire sheet 8 and a frame 9, the plane light window 3 is arranged right above the groove, the outer side of the sapphire sheet 8 is fixedly connected with the inner side of the frame 9, and the bottom surface of the frame 9 is connected with the substrate 1; the lens 4 is arranged on the upper surface of the plane light window 3, and the extension part at the bottom of the lens 4 is provided with a lens fixing edge 10; the pressing block 5 is fixedly connected with the frame 9, and fixes the lens fixing edge 10 on the plane light window 3.
The upper surface of the sapphire sheet 8 is flush with the upper surface of the metal frame 9. The pressing block 5 and the frame 9 clamp and fix the lens fixing edge 10 in a gap. The substrate 1 is a 3D ceramic substrate 1; the 3D ceramic substrate 1 is made of alumina or aluminum nitride ceramic material.
As shown in fig. 1, 2, 3 and 4, a method for fabricating a hermetic package integrating a planar optical window and a ball lens includes the steps of: a groove is formed in the substrate 1, and the light-emitting chip 2 is fixed in the groove of the substrate 1; fixedly connecting the plane light window 3 on the substrate 1 and sealing the space above the groove; the lens 4 is fixed on the plane light window 3.
Further comprising the steps of: after the planar optical window 3 is fixedly connected to the substrate 1, the air tightness of the groove space sealed by the planar optical window 3 and the substrate 1 is detected.
The light emitting chip 2 is fixed in the groove of the substrate 1 in a die bonding or eutectic mode.
The step of fixedly connecting the planar light window 3 to the substrate 1 includes: s1, fixing the frame 9 of the plane light window 3 through a clamp; s2, the sapphire sheet 8 is arranged in the frame 9, and the upper surface of the sapphire sheet 8 is ensured to be flush with the upper surface of the frame 9; and S3, finally, placing a low-temperature welding ring between the sapphire sheet 8 and the frame 9, and carrying out fusion sealing in a reducing atmosphere.
The step of fixing the lens 4 on the plane light window 3 includes: s11, placing the lower surface of the lens 4 close to the upper surface of the sapphire sheet 8 on the plane light window 3; s12, sleeving the pressing block 5 on the lens fixing edge 10 and the frame 9 of the plane light window 3; and S13, welding the pressing block 5 on the frame 9 of the plane light window 3.
Example 2
In this embodiment, the lens 4 is a spherical lens 4, the compact 5 is a metal compact 5, and the frame 9 is a metal frame 9.
As shown in fig. 1, 2, 3 and 4, an airtight package structure integrating a planar optical window and a spherical lens comprises a substrate 1, a light emitting chip 2, a planar optical window 3, a spherical lens 4 and a metal compact 5, wherein the substrate 1 comprises a bottom plate 6 and a dam 7, the dam 7 is formed on the substrate 1 by electroplating, and the light emitting chip 2 is fixed on the bottom plate 6; the light emitting chip 2 is disposed in a space sealed by the substrate 1 and the planar light window 3.
The plane light window 3 comprises a sapphire sheet 8 and a metal frame 9, the plane light window 3 is placed on the substrate 1, the outer side of the sapphire sheet 8 is fixedly connected with the inner side of the metal frame 9, and the bottom surface of the metal frame 9 is fixedly connected with the box dam 7; in the manufacturing process of the plane optical window 3, the metal frame 9 is fixed through the graphite clamp, the upper surface of the metal frame 9 is placed downwards, the sapphire sheet 8 is put into the metal frame 9, the low-temperature welding ring is placed between the sapphire sheet 8 and the metal frame 9, the sapphire sheet 8 is pressed through the graphite clamp, the upper surface of the sapphire sheet 8 is guaranteed to be flush with the upper surface of the metal frame 9, the reducing atmosphere is sealed by melting, the sealing temperature is 450 ℃, and the speed of a chain belt is 45 mm/min.
The spherical lens 4 is arranged on the upper surface of the plane light window 3, and the spherical lens 4 is provided with a lens fixing edge 10; the metal pressing block 5 is fixedly connected with the metal frame 9, and the lens fixing edge 10 is fixed on the plane light window 3. The size of the light emitting chip 2 is 0.25 × 0.5mm, the light emitting angle is 120 °, the size of the sapphire sheet 8 of the planar light window 3 is 2.5 × 0.3mm, the thickness of the welding edge of the metal frame 9 is 0.1mm, the diameter of the spherical lens 4 is 3mm, the 3D ceramic substrate 1 is made of aluminum nitride with the thickness of 0.5mm, and the height of the dam 7 is 0.5 mm.
The light emitting chip 2 is fixed on the substrate 1 by die bonding or eutectic crystal. The light-emitting chip 2 is bonded on the ceramic substrate 1 through silver paste, dried for 1.5 hours at 200 ℃ after the glue dispensing is finished, and then circuit connection between the chip and the ceramic substrate 1 is carried out through gold wire bonding. Fixing the planar light window 3 on the dam 7 of the 3D ceramic substrate 1, and then welding the metal frame 9 around the planar light window 3 on the metal dam 7 of the ceramic substrate 1 by laser welding, so that the light-emitting chip 2 is sealed in the space sealed by the 3D ceramic substrate 1 and the planar light window 3.
And the metal frame and the box dam are welded by laser.
The sapphire sheet 8 is soldered to a metal frame 9 by a low-temperature glass solder.
The upper surface of the sapphire sheet 8 is flush with the upper surface of the metal frame 9. The inorganic airtight sealing is ensured, the upper surface of the sapphire sheet 8 is flush with the upper surface of the metal frame 9, the gap between the sapphire sheet 8 and the spherical lens 4 is reduced, and the transmittance is ensured.
The metal frame 9 and the metal pressing block 5 are welded by laser, and the lens fixing edge 10 is clamped and fixed by the gap between the metal pressing block 5 and the metal frame 9. The spherical lens 4 is placed on the plane light window 3, the lower surface of the spherical lens 4 is tightly attached to the upper surface of the sapphire sheet 8 and placed on the plane light window 3, then the metal pressing block 5 is sleeved into the spherical lens 4 and pressed on the lens fixing edge 10 and the metal frame 9 of the plane light window 3, the metal pressing block 5 is welded on the metal frame 9 of the plane light window 3 by adopting laser, and the position of the spherical lens 4 is fixed. And (3) detecting the air tightness after the welding of the plane light window 3 is finished, and detecting whether water vapor exists or not by boiling the red ink for 2 hours.
The substrate 1 is a 3D ceramic substrate 1, and the 3D ceramic substrate 1 is made of alumina or aluminum nitride ceramic materials.
As shown in fig. 1, 2, 3 and 4, a method for fabricating a hermetic package integrating a planar optical window and a ball lens includes the steps of: the substrate 1 is provided with a groove, and the light-emitting chip 2 is fixed in the groove of the substrate 1 in a crystal-bonding or eutectic mode. The step of fixedly connecting the planar light window 3 to the substrate 1 includes: s1, fixing the frame 9 of the plane light window 3 through a clamp; s2, the sapphire sheet 8 is arranged in the frame 9, and the upper surface of the sapphire sheet 8 is ensured to be flush with the upper surface of the frame 9; and S3, finally, placing a low-temperature welding ring between the sapphire sheet 8 and the frame 9, and carrying out fusion sealing in a reducing atmosphere.
The planar light window 3 is fixedly connected to the substrate 1 and the space above the groove is sealed.
After the planar optical window 3 is fixedly connected to the substrate 1, the air tightness of the groove space sealed by the planar optical window 3 and the substrate 1 is detected.
The lens 4 is fixed on the plane light window 3. The step of fixing the lens 4 on the plane light window 3 includes: s11, placing the lower surface of the lens 4 close to the upper surface of the sapphire sheet 8 on the plane light window 3; s12, sleeving the pressing block 5 on the lens fixing edge 10 and the frame 9 of the plane light window 3; and S13, welding the pressing block 5 on the frame 9 of the plane light window 3.
Compared with the prior art, the utility model, following beneficial effect has:
1. the airtight packaging structure of the plane light window 3 and the spherical lens 4 is matched for use, so that the traditional sapphire lens structure is replaced, and the manufacturing cost of the optical lens is reduced.
2. The light is focused by a quartz lens with lower cost, the sapphire plane optical window 3 ensures inorganic airtight packaging, and the transmittance of the combined structure in a UVC wave band is more than 90 percent, so that the combined structure has the advantages of simple manufacture and low cost.
The present application provides a hermetic package structure integrating a planar optical window and a spherical lens and a method for fabricating the same. The description of the specific embodiments is provided only to facilitate an understanding of the methods, structures, and core concepts of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (5)
1. An airtight packaging structure integrating a plane optical window and a spherical lens comprises a substrate (1), a light-emitting chip (2), a plane optical window (3), a lens (4) and a pressing block (5),
the substrate (1) is provided with a groove, and the light-emitting chip (2) is arranged in the groove;
the plane light window (3) comprises a sapphire sheet (8) and a frame (9), the plane light window (3) is arranged right above the groove, the outer side of the sapphire sheet (8) is fixedly connected with the inner side of the frame (9), and the bottom surface of the frame (9) is connected with the substrate (1);
the lens (4) is arranged on the upper surface of the plane light window (3), and a lens fixing edge (10) is arranged on the extension part of the bottom of the lens (4);
the pressing block (5) is fixedly connected with the frame (9), and the lens fixing edge (10) is fixed on the plane light window (3).
2. An integrated planar optical window and ball lens hermetic package according to claim 1, wherein the sapphire sheet (8) upper surface is flush with the frame (9) upper surface.
3. An integrated planar optical window and ball lens hermetic package according to claim 2, wherein the gap between the press block (5) and the frame (9) holds the lens fixing rim (10).
4. An integrated planar optical window and ball lens hermetic package structure according to claim 3, characterized in that the substrate (1) is a 3D ceramic substrate (1).
5. The hermetic package structure of an integrated planar optical window and ball lens according to claim 4, wherein the 3D ceramic substrate (1) is made of alumina or aluminum nitride ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121440513.6U CN215061395U (en) | 2021-06-28 | 2021-06-28 | Airtight packaging structure integrating plane optical window and spherical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121440513.6U CN215061395U (en) | 2021-06-28 | 2021-06-28 | Airtight packaging structure integrating plane optical window and spherical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215061395U true CN215061395U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121440513.6U Active CN215061395U (en) | 2021-06-28 | 2021-06-28 | Airtight packaging structure integrating plane optical window and spherical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215061395U (en) |
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2021
- 2021-06-28 CN CN202121440513.6U patent/CN215061395U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Airtight Packaging Structure Integrating Flat Light Window and Spherical Lens Effective date of registration: 20231008 Granted publication date: 20211207 Pledgee: Agricultural Bank of China Limited Zhuhai Jida Sub-branch Pledgor: GUANGDONG GASTIGHT HERMETICAL COMPONENT Co.,Ltd. Registration number: Y2023980059916 |