WO2021059407A1 - 保護テープ、保護テープ付き光モジュール、光モジュールの保護方法及び光学装置の製造方法 - Google Patents

保護テープ、保護テープ付き光モジュール、光モジュールの保護方法及び光学装置の製造方法 Download PDF

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Publication number
WO2021059407A1
WO2021059407A1 PCT/JP2019/037663 JP2019037663W WO2021059407A1 WO 2021059407 A1 WO2021059407 A1 WO 2021059407A1 JP 2019037663 W JP2019037663 W JP 2019037663W WO 2021059407 A1 WO2021059407 A1 WO 2021059407A1
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WO
WIPO (PCT)
Prior art keywords
protective tape
optical module
tape
spacer
adhesive
Prior art date
Application number
PCT/JP2019/037663
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
彰 横山
政範 二村
孝弘 横井
勇治 久保
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2021548055A priority Critical patent/JP7203993B2/ja
Priority to PCT/JP2019/037663 priority patent/WO2021059407A1/ja
Priority to TW109126163A priority patent/TWI829955B/zh
Publication of WO2021059407A1 publication Critical patent/WO2021059407A1/ja

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system

Definitions

  • the present invention relates to a protective tape that protects an optical module, an optical module with a protective tape using the protective tape, a method for protecting the optical module, and a method for manufacturing an optical device.
  • An optical module in which a module substrate on which a light emitting element or a light receiving element is mounted is sealed with a transparent resin has a light transmitting portion through which light emitted from the light emitting element or light incident on the light receiving element is transmitted.
  • a method is adopted in which a protective tape is attached to the light transmitting portion of the optical module before mounting on the circuit board to prevent the light transmitting portion from being contaminated. That is, by mounting the optical module with the protective tape on the circuit board and peeling the protective tape from the optical module after mounting on the circuit board, it is possible to prevent the light transmitting portion from being soiled during mounting on the circuit board.
  • the adhesive of the protective tape comes into contact with the light transmitting part, the adhesive may remain in the light transmitting part.
  • Patent Document 1 discloses a camera module in which a protective tape having another adhesive tape laminated only on the outer peripheral portion of the adhesive tape is attached to a lens barrel to protect a lens protruding from the surface of the lens barrel. There is.
  • a protective tape having another adhesive tape laminated only on the outer peripheral portion of the adhesive tape is attached to a lens barrel to protect a lens protruding from the surface of the lens barrel.
  • the area covered with the protective tape becomes a closed space.
  • the gas generated in the closed space may adhere to the lens, or the internal pressure of the area covered with the protective tape may increase, causing the protective tape to peel off.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a protective tape capable of protecting a light transmitting portion without forming a closed space for a portion covering the light transmitting portion when the light transmitting portion is attached to the optical module. To do.
  • the present invention is a protective tape that is attached to the optical surface of an optical module to prevent foreign matter from adhering to the light transmitting portion of the optical surface. It has an adhesive tape having an adhesive layer on one surface, and a spacer attached to the adhesive layer in an outer portion of a first region which is a region corresponding to a light transmitting portion.
  • the adhesive tape has a second region which is a region to which the spacer is not attached and is connected from the first region to the outer edge of the adhesive tape.
  • the present invention when attached to an optical module, it is possible to obtain a protective tape that can protect the light transmitting portion without making the portion covering the light transmitting portion a closed space.
  • FIG. 1 An exploded perspective view showing the configuration of the optical module with a protective tape according to the first embodiment.
  • Top view of the optical module with protective tape according to the first embodiment Cross-sectional view of the optical module according to the first embodiment
  • Sectional drawing of the optical module with a protective tape according to Embodiment 1. The figure which shows the manufacturing procedure of the encoder using the optical module with the protective tape which concerns on Embodiment 1.
  • the figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3. The figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3.
  • the figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3. The figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3.
  • the figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3. The figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3.
  • the figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3. The figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3.
  • the figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3. The figure which shows the preparation procedure of the protective tape which concerns on Embodiment 3.
  • Top view of the optical module with protective tape according to the sixth embodiment Top view of the optical module with protective tape according to the first modification of the sixth embodiment.
  • FIG. 1 is an exploded perspective view showing a configuration of an optical module with a protective tape according to the first embodiment.
  • FIG. 2 is a plan view of the optical module with a protective tape according to the first embodiment.
  • FIG. 3 is a cross-sectional view of the optical module according to the first embodiment.
  • the optical module 100 with a protective tape according to the first embodiment has an optical module 1 having an optical surface 81 on which light is incident and a protective tape 10.
  • the optical surface 81 includes a light transmitting portion 50 which is a portion through which light is transmitted.
  • the protective tape 10 protects the light transmitting portion 50 by suppressing foreign matter from adhering to the light transmitting portion 50.
  • the light transmitting portion 50 includes a light transmitting portion 51 and a light transmitting portion 52.
  • the protective tape 10 has a spacer 12 and an adhesive tape 11.
  • the spacer 12 is a piece of film cut out from the film, and is divided into three spacers 12a, 12b, and 12c.
  • the spacer 12 may be divided into two.
  • the spacer 12 may be divided into four or more.
  • the spacer 12 does not have to be divided into a plurality. That is, the spacer 12 may have an annular shape with one break, specifically, a C-shape.
  • the optical module 1 is used for an encoder which is an optical device that optically detects the rotation angle of a servomotor.
  • the optical module 1 has a module substrate 5, a light emitting element 3 and a light receiving element 4 mounted on the module substrate 5, respectively, and a transparent resin 6 for sealing the light emitting element 3 and the light receiving element 4.
  • the surface of the transparent resin 6 is the optical surface 81.
  • the light emitting element 3 and the light receiving element 4 are mounted on the main surface of the module substrate 5.
  • the transparent resin 6 is arranged on the main surface of the module substrate 5 on which the light emitting element 3 and the light receiving element 4 are mounted.
  • the light receiving element 4 receives light at the light receiving unit 4a.
  • the region of the optical surface 81 of the transparent resin 6 that covers the light emitting element 3 is a light transmitting portion 51 through which the light emitted by the light emitting element 3 is transmitted. Further, in the optical module 1, the region of the optical surface 81 of the transparent resin 6 that covers the light receiving portion 4a of the light receiving element 4 is the light transmitting portion 52 through which the light incident on the light receiving portion 4a is transmitted.
  • the size of the light transmitting portion 51 can be set to any size.
  • the size of the light transmitting portion 51, the beam diameter or the intensity of the light emitted from the light-emitting element 3 is 1 / e 2 may be a full width at half maximum of the light emitted from the light-emitting element 3.
  • the light transmitting units 51 and 52 are set to include a light path when the light emitted by the light emitting element 3 is reflected by the object to be measured and is incident on the light receiving element 4.
  • the object to be measured that reflects the light emitted by the light emitting element 3 is arranged so as to face the optical surface 81.
  • the object to be measured can be exemplified by a pulse disk.
  • FIG. 4 and 5 are cross-sectional views of the optical module with a protective tape according to the first embodiment.
  • FIG. 4 shows a cross section of the optical module 100 with a protective tape along the IV-IV line in FIG.
  • FIG. 5 shows a cross section of the optical module 100 with a protective tape along the VV line in FIG.
  • the adhesive tape 11 has a two-layer structure consisting of a film layer 11a and an adhesive layer 11b. At the outer edge of the adhesive tape 11, the adhesive layer 11b is attached to the optical surface 81. Further, since the spacer 12 is in contact with the optical surface 81 around the light transmitting portion 50, the adhesive layer 11b and the optical surface 81 are in a non-contact state in the portion of the protective tape 10 that covers the light transmitting portion 50. There is. As a result, a space is formed above the light transmitting portion 50.
  • the space above the light transmitting portion 50 is referred to as a non-contact portion 60.
  • spacers 12a, 12b, and 12c are attached to the adhesive layer 11b on the outside of the first region 7, which is a region corresponding to the light transmitting portion 50.
  • the spacers 12a, 12b and 12c are attached to the adhesive layer 11b in a layout in which the light transmitting portion 50 is located between the spacers 12a and 12b and the spacer 12c.
  • the spacers 12a and 12c are L-shaped and are arranged with their corners facing the light transmitting portion 50 side.
  • the spacer 12c has a rectangular shape and is slightly longer than the light receiving portion 4a of the light receiving element 4.
  • the shapes of the spacers 12a, 12b and 12c shown here are examples, and the shapes of the spacers 12a, 12b and 12c are not limited to this.
  • the portion sandwiched between the portion where the spacer 12a is attached to the adhesive layer 11b and the portion where the spacer 12b is attached to the adhesive layer 11b is attached with the spacers 12a, 12b, 12c.
  • the second region 2 is connected from the first region 7 to the outer edge of the adhesive tape 11.
  • the position of the second region 2 is indicated by a broken line
  • the actual second region 2 includes the region indicated by the broken line in FIG. 2 and the adhesive tape is formed from the first region 7. It is connected to the outer edge of 11.
  • the adhesive tape 11 is separated from the transparent resin 6.
  • the adhesive tape 11 is in a non-contact state with the optical surface 81 up to the outer edge of the adhesive tape 11. Therefore, as shown in FIG. 4, the optical module 100 with the protective tape is formed with a ventilation path portion 61 that connects the outer edge portion of the protective tape 10 to the light transmitting portion 50.
  • the thickness of the spacers 12a and 12b attached to the adhesive layer 11b with the second region 2 interposed therebetween is set to be less than the size of the foreign matter to be suppressed from entering the light transmitting portion 50. Therefore, the height of the air passage portion 61 is smaller than the size of the foreign matter for which the intrusion into the light transmitting portions 51 and 52 is to be suppressed.
  • the thickness of the entire spacer 12 is set to be less than the size of a foreign substance that is desired to be suppressed from entering the light transmitting portion 50.
  • the size of the foreign matter is assumed to have a longitudinal dimension of 20 ⁇ m or more and less than 50 ⁇ m, but the longitudinal dimension may be 50 ⁇ m or more.
  • the spacers 12a, 12b, and 12c are arranged at three locations that are not on the same straight line in the outer portion of the region corresponding to the region where the light transmitting portions 51 and 52 are grouped.
  • the spacer 12 is provided at three locations that are not on the same straight line in the outer portion of the region corresponding to the light transmitting portion 51 and three locations that are not on the same straight line among the outer portions of the region corresponding to the light transmitting portion 52. And may be arranged individually.
  • Spacers 12 are individually provided at three locations outside the region corresponding to the light transmitting portion 51 that are not on the same straight line and at three locations outside the region corresponding to the light transmitting portion 52 that are not on the same straight line.
  • the ventilation path portion 61 connected from the outer edge portion of the protective tape 10 to the light transmitting portion 51 and the ventilation path portion 61 connected from the outer edge portion of the protective tape 10 to the light transmitting portion 52 are separately formed. Will be done.
  • the spacer 12 forms the non-contact portion 60 above the light transmitting portion 50 due to the presence of the spacer 12 at three locations that are not on the same straight line in the outer portion of the light transmitting portion 50.
  • the spacer 12 may rest on the light transmitting portions 51 and 52 as long as the light transmitting portions 51 and 52 and the adhesive layer 11b are not in contact with each other. Further, since the portion of the protective tape 10 on the outer edge side of the spacer 12 is inclined and adheres to the optical surface 81, the adhesive layer 11b and the optical surface 81 are formed in a region one size larger than the portion where the spacer 12 is arranged. Becomes non-contact. Therefore, if the optical surface 81 and the adhesive layer 11b are not in contact with each other in the light transmitting portions 51 and 52, a part of the light transmitting portions 51 and 52 may protrude from the region surrounded by the spacer 12.
  • FIG. 6 and 7 are diagrams showing a manufacturing procedure of an encoder using the optical module with a protective tape according to the first embodiment.
  • the optical module 100 with a protective tape is mounted on the circuit board 300 by soldering with the protective tape 10 still attached.
  • the protective tape 10 is peeled off from the optical module 100 with the protective tape mounted on the circuit board 300.
  • the encoder 400 which is the optical device according to the first embodiment, is manufactured by the above procedure.
  • the optical module 1 left on the circuit board 300 rotates the servomotor by receiving the reflected light from the measurement object such as the pulse disk among the light emitted by the light emitting element 3 by the light receiving element 4. The angle is detected optically.
  • the optical device manufactured by using the optical module 100 with a protective tape is not limited to the encoder 400.
  • the procedure for creating the protective tape 10 is not limited to the following procedure.
  • the unprocessed film is attached to the adhesive surface of the carrier tape.
  • the spacer 12 is created by cutting out a film so as to be located outside the region corresponding to the light transmitting portion 50 by a mold or laser irradiation. Then, the excess portion of the film is removed.
  • the adhesive tape is attached to the adhesive side of the carrier tape. Then, the adhesive tape is cut out into the shape of the adhesive tape 11 by a mold or laser irradiation to prepare the protective tape 10. After that, the excess portion of the adhesive tape is removed.
  • a handling film is attached to the adhesive surface of the carrier tape.
  • the protective tape 10 is peeled off from the carrier tape together with the handling tape. Next, the protective tape 10 is transferred from the handling tape to the release liner.
  • known materials can be used as the material of the film and the adhesive tape.
  • the protective tape 10 can be created on the release liner.
  • a step for removing the foreign matter or the adhesive remaining on the processed cross section may be added between the steps.
  • the procedure for attaching the protective tape 10 to the optical module 1 is not limited to the following procedure.
  • the protective tape 10 is picked up from the release liner with tweezers or a suction nozzle and peeled off.
  • the protective tape 10 is placed on the optical module 1.
  • the outer shape of the protective tape 10 and the position of the spacer 12 and the outer shape of the optical module 1 are image-recognized. The relative positions may be adjusted.
  • the outer peripheral portion of the protective tape 10 is pressed with a stamp.
  • the stamp is hollowed out so as to avoid the light transmitting portions 51 and 52 and the spacer 12, and the entire protective tape 10 is pressed together.
  • a stamp having a hollowed shape so as to avoid the light transmitting portions 51 and 52 and the spacer 12 is formed of a flexible material such as rubber, and has a tapered structure in which the center side is pressed first, from the inside of the protective tape 10. You may hold the stamp while deforming it so as to expel the air to the outside.
  • a rectangular and L-shaped stamp may be combined and attached by sequentially pressing each side, four corners, and an arbitrary place of the outer peripheral portion of the protective tape 10.
  • the optical module 100 with a protective tape has an adhesive tape attached to the light transmitting portions 51 and 52 by attracting the light transmitting portions 51 and 52 with a nozzle or by sandwiching the side surface with tweezers or a chuck tool and gripping the light transmitting portions 51 and 52. It can be handled without touching 11.
  • a method of peeling the protective tape 10 from the optical module 1 will be described. Three methods can be exemplified as a method for peeling the protective tape 10 from the optical module 1.
  • the peeling tape is attached to the entire surface of the film layer 11a of the adhesive tape 11, and the protective tape 10 is peeled from the corners or one side.
  • a load is applied only to the non-contact portion 60 so that the non-contact portion 60 is not crushed and the adhesive tape 11 does not come into contact with the light transmitting portion 50. Do not take it.
  • the load applied to the protective tape 10 is suppressed as much as possible.
  • the peeling tape is attached only to the corner or one side of the protective tape 10 and gradually peeled from the corner or one side.
  • a part of the adhesive tape 11 is projected to the outside, pinched with tweezers, and peeled off.
  • the protection including the upper part of the light transmitting portions 51 and 52 is included.
  • a nozzle that contacts the entire surface of the tape 10 may be used.
  • the optical module 100 with a protective tape according to the first embodiment includes a ventilation path portion 61 that connects the outer edge portion of the protective tape 10 to the light transmitting portion 50, the gas generated from the transparent resin 6 is sent to the outside of the non-contact portion 60. Can be released. Therefore, it is possible to prevent the protective tape 10 from being peeled off due to an increase in the pressure inside the non-contact portion 60 in a high temperature environment. Further, the optical module 100 with a protective tape according to the first embodiment can prevent the protective tape 10 from sticking to the light transmitting portion 50 due to a decrease in the pressure inside the non-contact portion 60 during cooling after heating. ..
  • the protective tape 10 according to the first embodiment since the protective tape 10 can be created by combining the adhesive tape 11 and the spacer 12, it is easy to improve the accuracy of the dimensions, shape and arrangement of the spacer 12. .. Further, the protective tape 10 according to the first embodiment can be produced inexpensively even in a small lot because the combination of the adhesive tape 11 and the spacer 12 can be easily changed according to the specifications such as the dimensions and the material of the optical module 1. .. Further, the protective tape on which the ventilation path portion is formed when attached to the optical module 1 can be created by removing a part of the adhesive layer of the adhesive tape, but the protective tape 10 according to the first embodiment. Can be produced by combining the adhesive tape 11 and the spacer 12, and therefore can be produced at a lower cost than the protective tape that removes a part of the adhesive layer of the adhesive tape.
  • FIG. 8 is a plan view of the protective tape according to the second embodiment.
  • the protective tape 10 according to the second embodiment is different from the first embodiment in that a notch 71 is formed in the adhesive tape 11 on the outer edge side of the region to which the spacer 12 is attached.
  • the portion on the outer edge side of the area where the spacer 12 is attached tends to wrinkle when the protective tape 10 is attached to the optical module 1. Further, when the adhesive force of the adhesive tape 11 is small, a springback occurs in the deformed portion of the adhesive tape 11, and the adhesive portion is peeled off. Therefore, by forming the notch 71 in the portion of the adhesive tape 11 on the outer edge side of the region to which the spacer 12 is attached, wrinkles are generated in the protective tape 10 when the protective tape 10 is attached to the optical module 1. It can be made difficult. Then, by reducing the number of deformed portions, the springback can be reduced and peeling can be suppressed.
  • FIG. 9 is a plan view of the protective tape according to the first modification of the second embodiment.
  • the position and number of the cuts 71 can be arbitrarily changed as long as wrinkles are less likely to occur when the optical module 1 is attached.
  • FIG. 10 is a plan view of the protective tape according to the second modification of the second embodiment.
  • FIG. 11 is a plan view of the protective tape according to the third modification of the second embodiment.
  • the protective tape 10 can be used as an optical module by aligning the extending directions of the notches 71 or the notches 72. It is possible to prevent the protective tape 10 from being cut when it is peeled from 1.
  • FIG. 12 is a plan view of the optical module with a protective tape according to the third embodiment.
  • FIG. 13 is a cross-sectional view of the optical module with a protective tape according to the third embodiment.
  • the spacer 12 is thicker than the first spacer 16 that sandwiches the second region 2 and is between the first spacer 16. It differs from the first embodiment in that it includes a second spacer 13 attached to the adhesive layer 11b so that the first region 7 is located. That is, the second spacer 13 is attached to the adhesive layer 11b so that the first region 7 is located between the region to which the first spacer 16 is attached.
  • the first spacer 16 is divided into two, the first spacers 16a and 16b.
  • the second spacer 13 is divided into the second spacers 13a, 13b, and 13c.
  • the second spacers 13a and 13b are attached to the adhesive layer 11b so that the portion of the first region 7 corresponding to the light transmitting portion 51 is located between the first spacers 16a and 16b. ..
  • the second spacer 13c is attached to the adhesive layer 11b so that a portion of the first region 7 corresponding to the light transmitting portion 52 is located between the first spacers 16a and 16b.
  • the second spacer 13c has a rectangular shape and is slightly longer than the light receiving portion 4a of the light receiving element 4.
  • the second spacers 13a and 13b have a rectangular shape and are arranged side by side on the same straight line.
  • the second spacer 13c is attached to the adhesive layer 11b so that a portion of the first region 7 corresponding to the light transmitting portion 52 is located between the second spacers 13a and 13b. Therefore, the second spacers 13a and 13b and the second spacer 13c are arranged at three locations on the outer side of the region corresponding to the light transmitting portion 51, which are not on the same straight line.
  • the length of the second spacers 13a and 13b arranged side by side that is, the length of the second spacer 13a, the length of the second spacer 13b, and the length of the gap between the second spacer 13a and the second spacer 13b.
  • the total length is the same as that of the second spacer 13c.
  • 14 to 30 are views showing a procedure for creating a protective tape according to the third embodiment.
  • the procedure for creating the protective tape 10 is not limited to the following procedure.
  • the film 120 is cut out at an arbitrary position and shape by a mold or laser irradiation to prepare the first spacer 16.
  • a first structure 201 is created in which the unnecessary portion 121, which is a region other than the first spacer 16 cut out from the film 120, is removed.
  • the thick film film 130 before processing is attached to the adhesive surface of the carrier tape 151.
  • the thick film film 130 is cut out at an arbitrary position and shape by a mold or laser irradiation to prepare a second spacer 13.
  • a second structure 202 is created in which the unnecessary portion 131, which is a region other than the second spacer 13 cut out from the thick film film 130, is removed.
  • the carrier tape 152 is attached to the surface of the carrier tape 151 on the side to which the second spacer 13 is attached. Then, as shown in FIG. 21, the carrier tape 151 is removed from the carrier tape 151 to which the carrier tape 152 is attached to the surface on the side to which the second spacer 13 is attached. As a result, a third structure 203 in which the second spacer 13 is arranged on one surface of the carrier tape 152 is formed.
  • the second spacer 13 is positioned so as to be on the adhesive surface side of the carrier tape 150, and the third structure 203 is attached to the first structure 201.
  • the carrier tape 152 is removed from the fourth structure 204 to create the fifth structure 205.
  • the adhesive tape 110 before processing is attached to the fifth structure 205.
  • the adhesive tape 110 is cut out by a mold or laser irradiation so that the adhesive tape 110 has an arbitrary shape to prepare the adhesive tape 11.
  • a step of bringing the adhesive tape 11 into close contact with the first spacer 16 or the carrier tape 150 is inserted before the step of cutting out the adhesive tape 11. do it.
  • the unnecessary portion 111 of the adhesive tape 110 is removed.
  • a step for removing the foreign matter or the adhesive remaining on the processed cross section may be added between the steps, or the tape may be prepared by a procedure different from the above procedure.
  • the carrier tape 153 is attached on the adhesive tape 11 to create the sixth structure 206.
  • the carrier tape 150 is removed from the sixth structure 206 to create the seventh structure 207.
  • the seventh structure 207 is attached to the release liner 170 to create the eighth structure 208.
  • the carrier tape 153 is removed from the eighth structure 208.
  • the adhesive strength between the tapes is made different.
  • a tape having high adhesive strength is used on the surface side where the cut-out tape or film is left.
  • the adhesive strength between the tapes can also be made different by using a tape whose adhesive strength is reduced by irradiating one of the tapes with ultraviolet rays or visible light.
  • FIG. 31 is a diagram showing a method of leaving the tape or film cut out at the time of producing the protective tape according to the third embodiment on the other tape.
  • the peeling edge 200 is pressed against the non-adhesive surface side of the carrier tape 152 on the peeling side of the fourth structure 204, and the portion of the carrier tape 152 where the peeling edge 200 is pressed has an acute angle or I try to bend it at a right angle.
  • the second spacer 13 will not be deformed at an acute angle or a right angle with respect to the bending of the carrier tape 152 at an acute angle or a right angle. It is peeled off from the carrier tape 152 and remains on the carrier tape 150 side.
  • the cut out tape or film may be peeled off from the carrier tape once, picked up by a tool such as a suction nozzle, and then positioned by image recognition and stuck.
  • the first spacer 16 sandwiching the second region 2 forming the air passage portion 61 is arranged outside the region corresponding to the light transmitting portion 50. Since it is thinner than the spacer 13 of 2, the distance between the adhesive tape 11 and the optical surface 81 at the non-contact portion 60 can be increased without increasing the air passage height of the ventilation passage portion 61. Therefore, it is possible to have a structure in which foreign matter does not easily enter the light transmitting portion 50 and the adhesive does not easily adhere to the light transmitting portion 50.
  • FIG. 32 is a plan view of the optical module with a protective tape according to the fourth embodiment.
  • the optical module 100 with a protective tape according to the fourth embodiment is related to the first embodiment in that a degassing portion 73 penetrating the adhesive tape 11 is provided in a portion of the protective tape 10 that covers the light transmitting portion 50. It is different from the optical module 100 with protective tape.
  • the degassing portion 73 has a round hole shape is taken as an example, but the degassing portion 73 may be a simple notch.
  • the optical module 100 with a protective tape according to the fourth embodiment can release gas from the gas venting portion 73 in addition to the ventilation passage portion 61, the light transmitting portion even when the amount of gas generated from the transparent resin 6 is large. It is possible to prevent 50 from becoming dirty.
  • FIG. 33 is a plan view of the optical module with a protective tape according to the fifth embodiment.
  • the optical module 100 with a protective tape according to the fifth embodiment is different from the optical module 100 with a protective tape according to the first embodiment in that it has a peeling starting point film 14. That is, the protective tape 10 according to the fifth embodiment includes a peeling starting point film 14.
  • the peeling starting point film 14 is provided on the outer edge of the protective tape 10 for the purpose of improving the peelability of the protective tape 10.
  • the peeling starting point film 14 is attached to the adhesive layer 11b at the outer edge of the adhesive tape 11.
  • the adhesive strength per unit area of the protective tape 10 at the portion where the peeling starting point film 14 is provided is weaker than the adhesive strength per unit area at the portion where the adhesive tape 11 is attached to the transparent resin 6. ..
  • FIG. 34 is a plan view of the optical module with a protective tape according to the first modification of the fifth embodiment. As shown in FIG. 34, the peeling origin film 14 may be provided at a corner of the protective tape 10.
  • FIG. 35 is a plan view of the optical module with a protective tape according to the second modification of the fifth embodiment. As shown in FIG. 35, the peeling starting point film 14 may be provided at two or more places. The peeling starting point film 14 may be provided at a portion different from the portion illustrated here.
  • the peeling starting point film 14 When the peeling starting point film 14 is attached to the adhesive surface side of the adhesive tape 11, the peeling starting point film 14 is formed in a polygonal shape. It is desirable that the shape and the sticking position of the peeling starting point film 14 gradually increase the unpeeled portion adhering to the transparent resin 6 when the protective tape 10 is gradually peeled from the end. For example, when the protective tape 10 shown in FIG. 35 is peeled from the right to the left in the drawing of FIG. 35, the unpeeled portion gradually increases, so that the protective tape 10 is peeled in this direction. Is preferable.
  • the peeling starting point film 14 can be formed in the same process as the spacer 12.
  • the peeling starting point film 14 may be made of a material different from that of the spacer 12. Further, the peeling origin film 14 may be formed by cutting out the film 120 and the thick film 130 so as to be connected to each other.
  • an adhesive tape having a weak adhesive force may be used instead of the peeling starting point film 14.
  • the adhesive surface of the adhesive tape for the peeling starting point may be the optical module 1 side or the adhesive layer 11b side of the adhesive tape 11.
  • the optical module 100 with a protective tape according to the fifth embodiment includes the peeling starting point film 14, the protective tape 10 can be easily peeled from the optical module 1.
  • FIG. 36 is a plan view of the optical module with a protective tape according to the sixth embodiment.
  • the optical module 100 with a protective tape according to the sixth embodiment is different from the optical module 100 with a protective tape according to the first embodiment in that it has a folded-back portion 15. That is, the protective tape 10 according to the sixth embodiment has the same structure as the protective tape 10 according to the first embodiment, but is light in a state where a part of the outer edge portion is folded back so that the film layers 11a overlap each other. It differs from the first embodiment in that it is attached to the module 1.
  • FIG. 37 is a plan view of the optical module with a protective tape according to the first modification of the sixth embodiment. As shown in FIG. 37, the folded-back portion 15 may be provided at a corner of the protective tape 10.
  • FIG. 38 is a plan view of the optical module with a protective tape according to the second modification of the sixth embodiment. As shown in FIG. 38, the folded-back portions 15 may be provided at two or more locations. It should be noted that the folded-back portion 15 may be provided at a portion different from the portion illustrated here.
  • the protective tape 10 since the protective tape 10 is not attached to the transparent resin 6 at the folded-back portion 15, the protective tape 10 can be easily attached to the optical module by gripping the folded-back portion 15. It can be peeled off from 1.
  • the optical module 1 is for detecting the rotation angle of the servomotor, but the optical module 1 may be an image sensor, an image sensor, or a lens barrel. Further, not only the structure in which the light emitting element 3 and the light receiving element 4 are mounted one by one, but also the light emitting element 3 and the light receiving element 4 may each have a plurality of structures, or only one of them is mounted. It may be configured.
  • the spacer 12 and the peeling starting point film 14 may be made of a foil-like material other than the film such as an adhesive tape, a metal piece, a resin piece, and paper.
  • the configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adhesive Tapes (AREA)
PCT/JP2019/037663 2019-09-25 2019-09-25 保護テープ、保護テープ付き光モジュール、光モジュールの保護方法及び光学装置の製造方法 WO2021059407A1 (ja)

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PCT/JP2019/037663 WO2021059407A1 (ja) 2019-09-25 2019-09-25 保護テープ、保護テープ付き光モジュール、光モジュールの保護方法及び光学装置の製造方法
TW109126163A TWI829955B (zh) 2019-09-25 2020-08-03 保護帶、附有保護帶的光模組、光模組的保護方法及光學裝置的製造方法

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