CN115229475A - Method for disassembling glass shell window of image sensor - Google Patents
Method for disassembling glass shell window of image sensor Download PDFInfo
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- CN115229475A CN115229475A CN202210673558.0A CN202210673558A CN115229475A CN 115229475 A CN115229475 A CN 115229475A CN 202210673558 A CN202210673558 A CN 202210673558A CN 115229475 A CN115229475 A CN 115229475A
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- image sensor
- temperature
- heating
- glass shell
- glass
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- 239000011521 glass Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 57
- 239000004568 cement Substances 0.000 claims abstract description 25
- 238000003825 pressing Methods 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 17
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 239000006063 cullet Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention particularly relates to a method for disassembling a glass shell window of an image sensor, which is used for solving the problems that the glass shell window is low in success rate and the image sensor is easy to damage in the existing disassembling method. A method for disassembling a glass shell window of an image sensor comprises the following steps: step 1, placing an image sensor on a heating table top of a temperature control table; step 2, heating the image sensor; step 2.1, preheating for 15min to raise the temperature to 100 ℃, wherein the highest preheating temperature rise rate is 3 ℃/sec; 2.2, heating at constant temperature for 10min to set the temperature to 180 ℃, wherein the heating rate is 3 ℃/sec at most; and 3, stripping the glass shell window by using a disassembling tool. The invention enables the glass cement to be rapidly aged through high-temperature heating, and realizes zero-risk disassembly of the glass shell window of the image sensor.
Description
Technical Field
The invention belongs to the field of high-power laser measurement, and particularly relates to a method for disassembling a glass shell window of an image sensor.
Background
At present, the high-power laser technology is not only applied to the scientific research field, but also widely applied to various fields such as laser welding, laser cutting and the like.
The near-field light intensity distribution of the laser beam has great influence on parameters such as near-field non-uniformity factors and intensity non-flatness factors, and because a high-power laser system needs to reduce the damage risk of optical elements caused by non-linear effect in transmission and reduce the light beam modulation caused by diffraction, the high-power laser system needs to have uniform near-field intensity distribution, and prevents the light beam from deviating and diverging caused by mirror surface damage, thermal deformation and uneven thermal halo, so that the near-field light intensity distribution of the laser beam needs to be measured scientifically and reasonably.
When the image sensor is used for directly measuring the laser near field distribution, because the image sensor is generally provided with a dustproof glass shell window, interference fringes can be generated during the laser near field measurement, and real laser near field image data cannot be acquired. Therefore, the glass cover window needs to be detached for the image sensor used in the laser near-field measurement process.
Generally, the glass shell window of the image sensor is fixed by various adhesives, and is difficult to detach.
In the prior art, the method for disassembling the glass shell window of the image sensor usually adopts a blade to pry the glass shell window from an adhesive part, which easily causes the problems that the glass shell window is cracked to damage the image sensor, glass broken slag scratches the target surface of the image sensor, the adhesive part has glass broken slag residue and the like, and then the image sensor is easy to be easily damaged in the disassembling process.
Disclosure of Invention
The invention provides a method for disassembling a glass shell window of an image sensor, which aims to solve the problems that the glass shell window is easy to crack to damage the image sensor, glass cullet scratches the target surface of the image sensor, glass cullet residues exist at the gluing part and the like when the glass shell window of the image sensor is disassembled by the conventional method.
The invention has the following inventive concept: by utilizing the difference of the thermal expansion coefficients of the interface materials and heating the glass shell window of the image sensor by using the dismounting device, the glass cement is promoted to generate interface damage, so that the glass shell window is easy to be integrally taken down, and the glass shell window of the image sensor is dismounted at zero risk. Wherein, the glassThe material of the shell window is typically D263 Teco with a thermal expansion coefficient of 7.2X 10 -6 /° c (20 ℃); the image sensor body is usually encapsulated in a ceramic material with a thermal expansion coefficient of 7.2 × 10 -6 /° c (20 ℃); the window with adhered glass shell is made of special glass cement, including JL-100 acrylate resin, JL510 epoxy resin, etc. and has thermal expansion coefficient of 150 x 10 -6 /. Degree.C. (20 ℃ C.).
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a method for disassembling a glass shell window of an image sensor is characterized by comprising the following steps:
step 1, preparing or processing a dismounting device for dismounting a glass shell window of an image sensor;
the dismounting device comprises a workbench, a temperature control table and a heat insulation pressing block; the temperature control table is positioned on the workbench, a heating table surface of the temperature control table is used for placing an image sensor of the glass shell window to be disassembled, and the heat insulation pressing block is used for pressing the image sensor of the glass shell window to be disassembled;
placing an image sensor of a glass shell window to be disassembled on a heating table top of a temperature control table, and pressing the upper end face of an image sensor body by using the lower end face of a heat insulation pressing block to enable the lower end face of the glass shell window to be tightly attached to the heating table top of the temperature control table;
3.1 preheating and heating
During preheating, the temperature of the temperature control table is set to 87-107 ℃, the preheating time is set to 10-20min, and the preheating temperature rise rate is not more than 3 ℃/sec;
3.2, constant temperature heating
After preheating and heating are finished, starting constant-temperature heating;
setting the temperature of the temperature control table to 170-240 ℃, setting the constant-temperature heating time to 10-14min, and enabling the heating rate not to exceed 3 ℃/sec to enable the glass cement (3) to age rapidly;
And removing the heat insulation pressing block, clamping the image sensor body by using a clamping tool, enabling the glass shell window to face downwards, and stripping the glass shell window along the position of the glass cement by using a disassembling tool, so that the disassembly of the glass shell window is completed.
Further, in step 3.1, during the preheating, the temperature of the temperature control table is set to 100 ℃, the preheating time is set to 15min, and the preheating temperature rise rate is 2 ℃/sec.
Further, in step 2.2, the temperature of the temperature control table is set to 180 ℃, the constant-temperature heating time is set for 11min, and the preheating temperature rise rate is 2 ℃/sec, so that the glass cement is rapidly aged.
Further, in step 1, the heat insulation pressing block is made of a zirconia ceramic material.
In step 4, the clamping tool is a tool capable of clamping such as tweezers and pliers, and the disassembling tool is a tool capable of peeling off the glass housing window such as a metal blade or a ceramic knife.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention utilizes the difference of the thermal expansion coefficients of the interface materials to promote the interface damage of the glass cement by high-temperature heating, thereby realizing the zero-risk disassembly of the glass shell window of the image sensor.
(2) The invention can disassemble the glass shell windows of various adhesive image sensors, meet the requirement of laser near-field measurement and reduce the model selection cost.
(3) The device structure of the invention can start working only by three parts, and has the advantages of simple operation, convenience, safety, reliability and strong practicability.
Drawings
FIG. 1 is a schematic structural view of an image sensor with a glass housing window to be disassembled according to the present invention;
FIG. 2 is a schematic structural view of a state of use of the image sensor mounted on a glass cover window to be removed in the removing apparatus according to the embodiment of the present invention;
FIG. 3 is a graph illustrating heating time and heating temperature curves of a heating process according to an embodiment of the present invention;
fig. 4 is a graph showing the heating temperature, the heating time and the adhesion force of the glass cement obtained by testing when the glass shell window to be disassembled is heated.
Wherein the reference numerals are as follows:
1-heat insulation briquetting; 2-an image sensor body; 3-glass cement; 4-a glass shell window; 5-temperature control table; 6-a workbench.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
Referring to fig. 1 and 2, the dismounting device used in the dismounting method of the glass shell window of the image sensor comprises: a workbench 6, a temperature control table 5 and a heat insulation pressing block 1. The temperature control table 5 is positioned on the workbench 6, an image sensor of the glass shell window to be disassembled is placed right above the heating table surface of the temperature control table 5, the heat insulation pressing block 1 made of the zirconia ceramic material is positioned on the image sensor, the heat insulation performance is good, the glass shell window 4 can be tightly attached to the heating table surface of the temperature control table 5, and the heating is uniform.
The image sensor of the glass shell window to be disassembled comprises an image sensor body 2, glass cement 3 and a glass shell window 4. The lower end face of the image sensor body 2 is connected with the upper end face of the glass shell window 4 through the glass cement 3, the lower end face of the heat insulation pressing block 1 is in contact with the upper end face of the image sensor body 2, and the lower end face of the glass shell window 4 is tightly attached to the heating table face of the temperature control table 5.
The invention discloses a method for disassembling a glass shell window of an image sensor, which comprises the following specific steps:
step 1, arranging an image sensor of a glass shell window to be disassembled on the disassembling device
The image sensor is integrally placed on the heating table top of the temperature control table 5, so that the lower end face of the heat insulation pressing block 1 is in contact with the upper end face of the image sensor body 2, and the lower end face of the glass shell window 4 is tightly attached to the heating table top of the temperature control table 5.
2.1 according to the heating curve chart shown in fig. 3, preheating heating is firstly carried out, wherein the preheating heating is used for preventing the sensor from being damaged or the glass shell window from being cracked when the sensor is impacted at a large temperature difference.
During preheating, according to the thermal expansion coefficients of the glass shell window, the glass cement and the sensor body, the thermal expansion coefficient of the glass cement is the largest, the thickness of the glass cement is 0.2mm (20 ℃), and when the temperature is less than or equal to 100 ℃, the maximum relative deformation of the glass cement is as follows: Δ L1=0.2mm × (100 ℃ -20 ℃ C.) X150 × 10 -6 /° c =2.4 μm. Thus, the temperature of the temperature console 5 is set to 100 ℃. Rate of preheating<3 ℃/sec, the glass shell window is prevented from bursting.
In this case, the adhesive force was almost unchanged at a heating time of 10min or more and at about 0.2MPa, as shown by a graph of the temperature, the heating time, and the adhesive force. Therefore, the preheating time is more than 10 min. Here, the preheating time was taken to be 15min.
Step 2.2, heating at constant temperature
Two changes will occur after the glass cement is heated: one is a physical change, which manifests as a large deformation; the second is chemical change, which is mainly represented by thermal decomposition and oxidative cracking in the presence of oxygen. When the adhesive layer is kept at a high temperature for a long time, molecular substances can escape from the adhesive layer to generate air holes, so that the mechanical property of the adhesive layer is reduced until the adhesive layer is damaged.
The invention mainly utilizes the characteristic that the thermal expansion coefficient of the glass cement is larger than that of the glass shell window and the sensor body, and when the temperature is more than or equal to 180 ℃, the relative deformation of the glass cement is as follows: delta L1 is not less than 0.2mm x (180 ℃ -20 ℃) x 150 x 10 -6 4.8 μm or more per DEG C. Meanwhile, according to the requirement of the welding temperature of the sensor, the continuous heating temperature is less than 240 ℃, and the unrecoverable damage to the sensor body is avoided. Thus, the temperature of the thermal control table 5 is set to 180 ℃ at the heating temperature rise rate<3 ℃/sec, preventing the glass shell window from bursting.
Fig. 4 is a graph showing a graph of a heating temperature, a heating time, and a glass cement adhesion force obtained by a test when a glass shell window to be disassembled is heated by using the disassembling apparatus used in the embodiment of the present invention. According to the graph of the heating temperature, the heating time and the adhesion force of the glass cement 3 shown in fig. 4, the graph is checked to obtain that when the heating time is at least 10min, the adhesion force is less than 0.01MPa, and the glass shell window is easy to fall off, so that the heating time is more than or equal to 10 min. Here, the heating time was 11min.
Therefore, after the completion of the preheating, the constant-temperature heating is started. The temperature of the temperature control table 5 is set to 180 ℃, and the glass cement 3 is heated for 10min at constant temperature, so that the maximum relative deformation amount is quickly reached, and the adhesive force is quickly reduced after the interface is damaged.
The thermal insulation pressing block 1 is removed, the image sensor body 2 is clamped by using tweezers, the glass shell window 4 is made to face downwards by inclining for 45 degrees, the glass shell window 4 is made to face downwards by using a blade along the position of the glass cement 3, dust is prevented from falling onto the target surface of the image sensor body 2, and the disassembly of the glass shell window 4 is completed.
Claims (5)
1. A method for disassembling a glass shell window of an image sensor is characterized by comprising the following steps:
step 1, preparing or processing a dismounting device for dismounting a glass shell window of an image sensor;
the dismounting device comprises a workbench (6), a temperature control table (5) and a heat insulation pressing block (1); the temperature control table (5) is positioned on the workbench (6), the heating table surface of the temperature control table (5) is used for placing an image sensor of the glass shell window to be disassembled, and the heat insulation pressing block (1) is used for pressing the image sensor of the glass shell window to be disassembled;
step 2, arranging an image sensor of the glass shell window to be disassembled on a disassembling device;
placing an image sensor of a glass shell window to be disassembled on a heating table surface of a temperature control table (5), and pressing the upper end surface of an image sensor body (2) by using the lower end surface of a heat insulation pressing block (1) to enable the lower end surface of the glass shell window (4) to be tightly attached to the heating table surface of the temperature control table (5);
step 3, heating;
3.1 preheating and heating
During preheating, the temperature of the temperature control table (5) is set to 87-107 ℃, the preheating time is set to 10-20min, and the preheating temperature rise rate is not more than 3 ℃/sec;
3.2 constant temperature heating
After preheating and heating are finished, starting constant-temperature heating;
setting the temperature of the temperature control table (5) to 170-240 ℃, setting the constant-temperature heating time to 10-14min, and enabling the heating rate not to exceed 3 ℃/sec to enable the glass cement (3) to age rapidly;
step 4, disassembling the glass shell window (4)
And removing the heat insulation pressing block (1), clamping the image sensor body (2) by using a clamping tool, enabling the glass shell window (4) to face downwards, and stripping the glass shell window (4) along the position of the glass cement (3) by using a disassembling tool, so as to finish disassembling the glass shell window (4).
2. The method for detaching the glass cover window of the image sensor as claimed in claim 1, wherein:
in the step 3.1, during preheating, the temperature of the temperature control table (5) is set to 100 ℃, the preheating time is set to 15min, and the preheating temperature rise rate is 2 ℃/sec.
3. The image sensor glass cover window removing method as claimed in claim 2, wherein:
in the step 2.2, the temperature of the temperature control table (5) is set to 180 ℃, the constant-temperature heating time is set for 11min, and the preheating temperature rise rate is 2 ℃/sec, so that the glass cement (3) is rapidly aged.
4. The method for detaching the glass cover window of the image sensor as claimed in claim 1, wherein:
in the step 1, the heat insulation pressing block (1) is made of zirconia ceramic material.
5. The method for detaching the glass cover window of the image sensor as set forth in claim 4, wherein:
in step 4, the clamping tool is a pair of tweezers, and the disassembling tool is a blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210673558.0A CN115229475B (en) | 2022-06-14 | 2022-06-14 | Method for disassembling glass shell window of image sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210673558.0A CN115229475B (en) | 2022-06-14 | 2022-06-14 | Method for disassembling glass shell window of image sensor |
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| Publication Number | Publication Date |
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| CN115229475A true CN115229475A (en) | 2022-10-25 |
| CN115229475B CN115229475B (en) | 2024-04-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003026061A (en) * | 2001-07-10 | 2003-01-29 | Toyota Motor Corp | Glass removing method and its device |
| CN104345483A (en) * | 2014-10-20 | 2015-02-11 | 深圳市国显科技股份有限公司 | Disassembling method and equipment adopting same |
| CN108417596A (en) * | 2018-04-12 | 2018-08-17 | 重庆港宇高科技开发有限公司 | Take the device and technique of sensor optical window |
| CN216098667U (en) * | 2021-08-23 | 2022-03-22 | 武汉市巧研电子科技有限公司 | Cell-phone backshell glass dismantles appearance |
| CN216098668U (en) * | 2021-08-23 | 2022-03-22 | 武汉市巧研电子科技有限公司 | Cell-phone backshell glass dismantles appearance |
| CN216229133U (en) * | 2021-11-18 | 2022-04-08 | 厦门力鼎光电股份有限公司 | Lens disassembling jig |
-
2022
- 2022-06-14 CN CN202210673558.0A patent/CN115229475B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003026061A (en) * | 2001-07-10 | 2003-01-29 | Toyota Motor Corp | Glass removing method and its device |
| CN104345483A (en) * | 2014-10-20 | 2015-02-11 | 深圳市国显科技股份有限公司 | Disassembling method and equipment adopting same |
| CN108417596A (en) * | 2018-04-12 | 2018-08-17 | 重庆港宇高科技开发有限公司 | Take the device and technique of sensor optical window |
| CN216098667U (en) * | 2021-08-23 | 2022-03-22 | 武汉市巧研电子科技有限公司 | Cell-phone backshell glass dismantles appearance |
| CN216098668U (en) * | 2021-08-23 | 2022-03-22 | 武汉市巧研电子科技有限公司 | Cell-phone backshell glass dismantles appearance |
| CN216229133U (en) * | 2021-11-18 | 2022-04-08 | 厦门力鼎光电股份有限公司 | Lens disassembling jig |
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| Publication number | Publication date |
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| CN115229475B (en) | 2024-04-05 |
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