CN106791340B - Camera assembly with protective film - Google Patents
Camera assembly with protective film Download PDFInfo
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- CN106791340B CN106791340B CN201710175175.XA CN201710175175A CN106791340B CN 106791340 B CN106791340 B CN 106791340B CN 201710175175 A CN201710175175 A CN 201710175175A CN 106791340 B CN106791340 B CN 106791340B
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- film
- protective film
- blocking layer
- glue
- camera assembly
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- 230000001681 protective effect Effects 0.000 title claims abstract description 71
- 239000003292 glue Substances 0.000 claims abstract description 54
- 239000011521 glass Substances 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims description 29
- 239000000853 adhesive Substances 0.000 claims description 21
- 230000001070 adhesive effect Effects 0.000 claims description 21
- 229910052594 sapphire Inorganic materials 0.000 claims description 18
- 239000010980 sapphire Substances 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000002313 adhesive film Substances 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 20
- 125000004122 cyclic group Chemical group 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 6
- 229920006280 packaging film Polymers 0.000 description 5
- 239000012785 packaging film Substances 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Adhesive Tapes (AREA)
- Lens Barrels (AREA)
Abstract
The invention provides a camera component with a protective film, which comprises the protective film, a metal ring and a glass sheet, wherein the glass sheet is fixedly arranged at one axial end of an annular step in the metal ring, and the protective film is attached to the other axial end of the annular step; the protection film includes that the whole face of single face covers gluey membrane body and at least one face does not have gluey fender glue film, keep off the glue film setting and cover the radial central point of gluey face at the membrane body and put, keep off the radial dimension on glue film and be less than the radial dimension of membrane body makes cyclic annular pasting district paste on the cyclic annular step, and keep off the glue film and be used for preventing the membrane body from following the back of pasting the glass piece in step through-hole department makes the camera subassembly quality bad. The camera assembly containing the protective film is successfully produced in a mass production manner in the company, so that the quality of a camera assembly product after the subsequent processing is finished and the protective film is removed is greatly improved, and great contribution is made in the aspects of controlling the production cost and improving the product quality.
Description
Technical Field
The invention relates to camera assemblies in mobile phones, tablet computers and various monitoring cameras, in particular to a camera assembly with a protective film.
Background
Camera components in mobile phones, tablet computers and various monitoring cameras are generally small in size. As shown in fig. 1 or fig. 2, the camera assembly includes a metal ring 2 (e.g., a stainless steel ring) and a glass wafer 3 (e.g., a sapphire sheet), wherein an annular step 21 protruding toward the radial inner side is disposed in an inner through hole of the metal ring, the glass wafer is fixedly disposed in the metal ring at one axial end of the annular step, and the protective film is required to be attached to the metal ring at the other axial end of the annular step to protect the back surface of the glass wafer; the metal ring, the glass wafer and the adhered protective film are coaxially arranged; an axial through hole 22 is formed in the radial center of the annular step, the back face of the glass wafer is fixed to the annular step (for example, the back face of the glass wafer is attached to the annular step at a high temperature through a hot melt adhesive), and a back face hole 23 of the camera assembly is a hole for inserting a protective film from the back face of the camera assembly to the step. After the protective film is pasted on the camera component, the camera component is assembled with other spare and accessory parts in the mobile phone or the tablet personal computer. The protective film protects the back surface of the sapphire lens in the subsequent assembling process, and prevents hard objects from scratching the lens and solder and other impurities from contaminating the lens.
With reference to fig. 2 and 3, the protective film used in the camera module in the prior art includes a release film and a plurality of film bodies 12 disposed on the release film, wherein the film bodies are circular and have no glue on one side thereof away from the release film, and the whole side of the other side thereof is coated with glue. Therefore, when the protective film is attached to the annular step, only the peripheral annular part of the attaching surface of the film body 12 can be attached to the annular step, the radial center of the attaching surface is suspended, the other axial side of the suspended position is the back surface of the sapphire sheet, in the process of attaching the protective film and the process of carrying and assembling a subsequent camera assembly, the protective film made of elastic materials such as PE and PET is prone to bending if being collided, the adhesive of the suspended position can be contacted with the back surface of the sapphire lens, the sapphire lens is polluted, and the quality of the residual adhesive on the back surface of the sapphire lens is abnormal.
Particularly, in the prior art, the protective film is mainly pasted on the camera assembly in a mode of manually pasting the protective film individually, and the work of pasting the protective film is manually finished through tweezers and an adhesive packaging film. The sticky packaging film is divided into an upper layer and a lower layer, the two sides of the upper layer are not provided with glue, the upper surface of the lower layer contains viscose with stronger adhesive force, and the sticky packaging film can be used for sticking the front or the back of the camera component. Specifically, the method of manually attaching a protective film individually in the prior art includes: the camera component is clamped by tweezers and is stuck on the lower layer of the adhesive packaging film one by one, and the front surface (one end containing the sapphire sheet) of the camera component is stuck and fixed to expose the back surface of the camera component. Then, the protective films are manually pasted, namely the single protective film is clamped from the release film of the whole protective film by using tweezers and poked into the step from the back hole of the camera assembly by using the tweezers, so that the peripheral ring of the adhesive surface of the single protective film is pasted on the step of the camera assembly. After the protective film is adhered, the upper layer cover of the adhesive packaging film is arranged above the camera component, and the position without the camera component between the upper layer and the lower layer is adhered tightly. Thus completing the process of attaching the protective film and packaging the camera assembly. In the process of sticking the protective film, the tweezers press the protective film in a single-point mode, so that the sticking firmness of the protective film is poor. Therefore, the adhesive on the suspended portion of the protective film can easily contact with the back surface of the sapphire lens. In the downstream processing procedure of the camera assembly, after the camera assembly is assembled and welded, the protective film needs to be removed, and after the protective film is removed, no relevant procedure for cleaning or cleaning the back surface of the sapphire lens exists.
Patent CN201520236142.8 provides a smart phone with a protective camera structure. It includes the shell, the camera, camera protection structure and circuit board, the hole of making a video recording has been seted up to the shell, the camera is established on the circuit board, camera protection structure cover is established on the camera, the hole of making a video recording is located the camera top, camera protection structure includes protection shield and transparent protection rete, a protection section of thick bamboo has been seted up to the protection shield, transparent protection rete is located protection section of thick bamboo upper portion and protection shield up end parallel and level, terminal surface is equipped with annular inoxidizing coating under the transparent protection rete, on the protection shield, lower terminal surface all is equipped with the protruding muscle of annular, all be equipped with matched with recess with it on shell and the circuit board. The protruding muscle of annular of this patent is spacing with recess reciprocal anchorage, and camera protection device is fixed more easily and firmly good, and when the cell-phone received external force and assaulted it, can greatly avoid camera protection device to drop, and the inoxidizing coating can cushion the camera, prevents that the camera from damaging, has good guard action to the camera. However, the patent does not relate to a protective film for protecting the back surface of the sapphire sheet, nor to a new camera assembly including a protective film.
Therefore, the camera assembly including the protective film, the metal ring and the glass sheet in the prior art is very easy to cause poor quality of the camera assembly product with the protective film removed due to adhesive residue. Therefore, in order to solve the problem of residual glue on the back surface of the sapphire lens, a new structure of a camera assembly containing a protective film is needed in the art.
Disclosure of Invention
Therefore, the invention provides a camera component with a protective film, which comprises the protective film, a metal ring and a glass sheet, wherein an annular step protruding towards the radial inner side is arranged in an axial inner through hole of the metal ring, the radial central position of the annular step is an axially arranged step through hole, the glass sheet is fixedly arranged at one axial end of the annular step in the metal ring, and the protective film is attached to the other axial end of the annular step in the metal ring to protect the back of the glass sheet; the protection film includes that the size is not more than the whole face of single face in becket back face hole and at least one side does not have gluey fender glue film, keep off the glue film setting and cover the radial central point of gluing the face at the membrane body and put, keep off the back setting that the face of gluing is close to the glass piece of glue film, keep off the radial dimension on glue film and be less than the radial dimension of membrane body makes the face of gluing of membrane body only has the cyclic annular sticking area of its radial periphery to paste on an terminal surface of cyclic annular step, and keep off the glue film and be used for preventing the membrane body from following the back of step through-hole department pastes to the glass piece and makes the camera subassembly quality bad.
In the present invention, the "glue blocking layer is disposed at the radial center position of the gluing surface of the film body" does not require that the glue blocking layer is disposed coaxially with the film body, for example, the center of the glue blocking layer slightly deviates from the center of the film body is also a preferable mode, as long as a space of an annular pasting area is left for the radial periphery of the film body after the glue blocking layer is covered. In general, the glue blocking layer covers the radial center point of the glue covering surface of the film body.
In the invention, the front surface of the glass sheet is not higher than the end surface of the metal ring in the axial direction and can be flush with or lower than the end surface of the metal ring.
In a specific embodiment, the shape of the membrane body is circular, square, oval or kidney-shaped, the shape of the adhesive blocking layer is similar to the shape of the membrane body, and the adhesive blocking layer is arranged coaxially with the membrane body, so that the annular sticking area is circular, square, oval or kidney-shaped.
In a specific embodiment, the glass sheet is a sapphire sheet, and the radial dimension of the glue blocking layer is not larger than that of the step through hole.
In a specific embodiment, the thickness of the glue barrier layer is not greater than the axial distance from the glue coating surface of the film body to the back surface of the glass sheet.
In a specific embodiment, the radial width of the annular sticking area is 0.2-2 mm, and the radial dimension of the glue blocking layer is 1/3-4/5 of the radial dimension of the step through hole.
In a particular embodiment, the radial width of the annular adhesive area is 0.4 to 1mm.
In a specific embodiment, the thickness of the glue blocking layer is 0.005-0.8 mm.
In a specific embodiment, the thickness of the glue blocking layer is 0.01-0.6 mm.
In a specific embodiment, the protective film further comprises a handle and a connecting film, wherein the handle is arranged on one side of the non-adhesive surface of the film body, the handle is a double-sided non-adhesive film, one surface of the connecting film is coated with adhesive, and the other surface of the connecting film is free of adhesive, and the connecting film is used for bonding the handle to the film body.
In a specific embodiment, the handle is rectangular, the connecting membrane comprises a rectangular portion bonded to the handle and a semicircular portion bonded to the membrane body, and the rectangular portion and the semicircular portion are integrally formed.
The invention has at least the following beneficial effects: this patent adds the fender glue film in the protection film of the camera subassembly that contains the protection film after, pastes the protection film in-process to and in subsequent camera subassembly transport, transportation, equipment, the welding process that contains the protection film, can avoid effectively leading to the protection film to touch the sapphire lens back and produce the phenomenon that the cull quality is unusual because of jolting of transport means such as the careless operation, pad pasting technology defect, the vibrations collision of board, vehicles. The quality of camera assembly products is improved.
Drawings
Fig. 1 is a schematic structural diagram of a camera assembly with a protective film according to the present invention.
Fig. 2 is a schematic structural diagram of a camera assembly including a protective film in the prior art.
Fig. 3 is a schematic structural view of a plurality of protective films on a whole release film according to the present invention.
Fig. 4 is a schematic perspective view of the protective film with a handle according to the present invention.
Fig. 5 is a cross-sectional view of the structure shown in fig. 4.
Fig. 6 is a top view of the structure shown in fig. 4.
Detailed Description
As shown in fig. 1 and fig. 3 to 6, the present invention provides a camera assembly with a protective film, which includes a protective film 1, a metal ring 2 and a glass sheet 3, wherein an annular step 21 protruding toward the radial inner side is arranged in an axial inner through hole of the metal ring, a radial central position of the annular step is an axially arranged step through hole 22, the glass sheet is fixedly arranged in the metal ring and at one axial end of the annular step, and the protective film is attached to the metal ring and at the other axial end of the annular step for protecting the back surface of the glass sheet; the protection film includes that the whole face of the single face that matches with the back hole 23 shape and the size of becket covers gluey membrane body 12 and at least one side does not have gluey fender glue film 13, fender glue film 13 sets up the radial central point who covers the face at membrane body 12 and puts, and the no face that glues layer 13 is close to the back setting of glass piece, and the radial dimension of fender glue film is less than the radial dimension of membrane body makes the face that covers of membrane body 12 only has its radial periphery's cyclic annular adhesion zone 16 to paste on an terminal surface of cyclic annular step 21, and fender glue film 13 is used for preventing membrane body 12 from the back of pasting glass piece 3 in step through-hole department makes the camera subassembly quality bad. The protective film 1 further comprises a handle 14 and a connecting film 15, wherein the handle 14 and the connecting film 15 are arranged on the other side of the film body 12, the handle is a membrane with two sides free of glue, one side of the connecting film 15 is coated with glue, and the other side of the connecting film 15 is free of glue and used for bonding the handle 14 to the film body 12; the handle is rectangular, the connection film 15 includes a rectangular portion 151 adhered to the handle and a semicircular portion 152 adhered to the film body 12, and the rectangular portion 151 and the semicircular portion 152 are integrally provided.
In a specific embodiment, the axial step through hole 22 is provided in the step and has a diameter of 5.772mm, the sapphire sheet has a thickness of 0.3mm, the diameter of the sapphire sheet is substantially the same as that of the through hole in the front surface of the camera head, and the diameter of the sapphire sheet is 7.556mm. The height of the whole camera assembly is 2.23mm, the height of the step is 0.18mm, the axial height of the front side of the assembly (above the step) is 0.5mm, and the axial height of the back side of the assembly (below the step) is 1.55mm. The step width of the front side end of the module, that is, the radial width of one end face of the step for bonding with the sapphire sheet was (7.556-5.772)/2 =0.892mm, and the step width of the back side end of the module, that is, the radial width of the end face of the step for bonding with the protective film was (6.66-5.772)/2 =0.444mm. The whole thickness of the whole protective film is about 0.2 mm.
In this patent, keep off the radially outside ring of pasting in glue layer and probably have the risk that drops on releasing the type membrane. Therefore, it is preferable to use electrostatic adsorption or a method of providing a non-transferable glue on the release film so that the protective film of the present invention does not fall off the release film. Or in the invention, the diameter D of the glue blocking layer is strictly set to be fully matched with the diameter D of the axial through hole 22 on the step 21, wherein D is 1/3 to 4/5, preferably 1/2 to 2/3 of D, so that the width of the radially outer sticking ring (the annular sticking area 16) of the glue blocking layer is wide enough to enable the protective film to be firmly stuck on the release film. The handle in the protective film can be erected or laid down on the film body.
The camera assembly containing the protective film is successfully produced in mass in the company, so that the quality of a camera assembly product after the subsequent processing is finished and the protective film is removed is greatly improved, and great contribution is made in the aspects of controlling the production cost and improving the product quality.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A camera assembly with a protective film comprises the protective film (1), a metal ring (2) and a glass sheet (3), wherein an annular step (21) protruding towards the radial inner side is arranged in an axial inner through hole of the metal ring, the radial central position of the annular step is an axially arranged step through hole (22), the glass sheet is fixedly arranged at one axial end of the annular step in the metal ring, and the protective film is attached to the other axial end of the annular step in the metal ring to protect the back of the glass sheet; the protective film comprises a film body (12) and a glue blocking layer (13), wherein the size of the film body is not larger than that of a metal ring back hole (23), the glue blocking layer is coated on the whole single face of the film body (12), at least one glue blocking layer (13) is not coated on the glue blocking face, the glue blocking layer (13) is arranged at the radial center of the glue coating face of the film body (12), the glue blocking face of the glue blocking layer (13) is close to the back face of a glass sheet, the radial size of the glue blocking layer is smaller than that of the film body, so that the glue coating face of the film body (12) is only provided with an annular pasting area (16) of the radial periphery to be pasted on one end face of an annular step (21), and the glue blocking layer (13) is used for preventing the film body (12) from being pasted on the back face of the glass sheet (3) from a step through hole to enable the quality of a camera assembly to be poor;
the protective film (1) further comprises a handle (14) and a connecting film (15), wherein the handle (14) and the connecting film (15) are arranged on one side of the non-adhesive surface of the film body (12), the handle is a double-sided non-adhesive film, one side of the connecting film (15) is coated with adhesive, and the other side of the connecting film is free of adhesive and used for adhering the handle (14) to the film body (12).
2. The camera component with the protective film according to claim 1, wherein the shape of the film body is circular, square, oval or kidney-shaped, the shape of the adhesive blocking layer is similar to the shape of the film body, and the adhesive blocking layer is coaxially arranged with the film body, so that the annular pasting region is circular, square-ring, oval-ring or kidney-ring-shaped.
3. The camera assembly with the protective film according to claim 1, wherein the glass sheet is a sapphire sheet, and the radial dimension of the adhesive blocking layer is not larger than that of the stepped through hole.
4. The camera assembly with the protective film according to claim 1, wherein the thickness of the glue blocking layer is not greater than the axial distance from the glue coating surface of the film body to the back surface of the glass sheet.
5. The camera assembly with the protective film according to claim 1, wherein the radial width of the annular pasting area is 0.2-2 mm, and the radial dimension of the glue blocking layer is 1/3-4/5 of the radial dimension of the step through hole.
6. The protective film-containing camera assembly according to claim 1, wherein the annular pasting region has a radial width of 0.4 to 1mm.
7. The camera assembly with the protective film according to any one of claims 1 to 6, wherein the thickness of the glue blocking layer is 0.005 to 0.8mm.
8. The camera assembly with the protective film according to claim 7, wherein the thickness of the glue blocking layer is 0.01-0.6 mm.
9. The camera assembly with the protective film according to claim 1, wherein the handle is rectangular, the connecting film (15) includes a rectangular portion (151) bonded to the handle and a semicircular portion (152) bonded to the film body (12), and the rectangular portion (151) and the semicircular portion (152) are integrally provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175175.XA CN106791340B (en) | 2017-03-22 | 2017-03-22 | Camera assembly with protective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175175.XA CN106791340B (en) | 2017-03-22 | 2017-03-22 | Camera assembly with protective film |
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| CN106791340A CN106791340A (en) | 2017-05-31 |
| CN106791340B true CN106791340B (en) | 2022-12-27 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110072043A (en) * | 2019-05-16 | 2019-07-30 | Oppo广东移动通信有限公司 | Shell assembly of electronic equipment and electronic equipment |
| CN111246065A (en) * | 2020-02-24 | 2020-06-05 | 昆山丘钛微电子科技有限公司 | Camera protection film and camera module external member |
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| CN106791340A (en) | 2017-05-31 |
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