WO2007119778A1 - 光モジュール、光モジュールの製造方法、光伝送モジュール、および電子機器 - Google Patents
光モジュール、光モジュールの製造方法、光伝送モジュール、および電子機器 Download PDFInfo
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- WO2007119778A1 WO2007119778A1 PCT/JP2007/058054 JP2007058054W WO2007119778A1 WO 2007119778 A1 WO2007119778 A1 WO 2007119778A1 JP 2007058054 W JP2007058054 W JP 2007058054W WO 2007119778 A1 WO2007119778 A1 WO 2007119778A1
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- optical
- optical element
- light
- sealant
- support substrate
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4251—Sealed packages
- G02B6/4253—Sealed packages by embedding housing components in an adhesive or a polymer material
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4255—Moulded or casted packages
Definitions
- OPTICAL MODULE OPTICAL MODULE MANUFACTURING METHOD
- OPTICAL TRANSMISSION MODULE OPTICAL TRANSMISSION MODULE
- AND ELECTRONIC DEVICE OPTICAL MODULE, OPTICAL MODULE MANUFACTURING METHOD, OPTICAL TRANSMISSION MODULE, AND ELECTRONIC DEVICE
- the present invention relates to an optical module for optical data transmission, and more particularly, to an optical transmission module having a flexible optical transmission path and a method for manufacturing the same.
- optical communication networks capable of high-speed and large-capacity data communication have been expanded. In the future, this optical communication network is expected to be installed in consumer devices.
- optical I / O optical data transmission cable optical cable
- This optical cable it is desirable to use a film optical waveguide in consideration of flexibility.
- An optical waveguide is formed by a core having a high refractive index and a clad having a low refractive index provided in contact with the periphery of the core, and optical signals incident on the core are all transmitted at the boundary between the core and the clad. It propagates while repeating reflection.
- the film optical waveguide has flexibility because the core and the clad are made of a flexible polymer material.
- optical element is an element that converts an electrical signal into an optical signal and transmits it, receives an optical signal and converts it into an electrical signal.
- a light emitting element is used on the light input side, and a light receiving element is used on the light output side. Since this alignment affects the optical coupling efficiency, high accuracy is required.
- FIG. 21 shows an example of a configuration for optically coupling a film optical waveguide and an optical element by aligning them in an optical module.
- An optical module 100 shown in FIG. 21 includes an optical waveguide 101, an optical element 102, and a support substrate 103 at the light incident side or light emission side end.
- the optical waveguide 101 is fixed to the support substrate 103 by adhesion or the like in the vicinity of the end thereof, The relative positional relationship between the end of the optical waveguide 101 and the optical element 102 is fixed.
- the support substrate 103 has a level difference such that the mounting surface of the optical element 102 and the fixing surface (adhesion surface) of the optical waveguide 101 are different. Further, the end face of the optical waveguide 101 is not perpendicular to the optical axis (the central axis along the longitudinal direction of the core portion), but is cut obliquely to form an optical path conversion mirror. Thus, the signal light transmitted through the core portion of the optical waveguide 101 is reflected by the optical path conversion mirror, and is emitted toward the optical element 102 while changing its traveling direction.
- a gap is generated between the lower surface of the optical waveguide 101 and the upper surface of the optical element 102.
- the emitted light emitted from the end of the optical waveguide 101 and directed to the light receiving element 102 is not parallel light but diffused light. Therefore, if there is a gap between the lower surface of the optical waveguide 101 and the upper surface of the optical element, light that protrudes from the light receiving surface of the light receiving element 102 is generated, which leads to optical loss. Further, illustration is omitted.
- incident light from the light emitting element 102 diffuses, and light that is not coupled to the core portion of the optical waveguide 101 increases, leading to optical loss.
- Patent Documents 1 and 2 disclose a configuration in which a gap having a high refractive index is filled in a gap between a light emitting element and an optical waveguide, and the optical waveguide is bonded and fixed by this grease. In this configuration, undesired interface reflection is suppressed by the above-mentioned resin layer, and the optical coupling efficiency can be improved. In addition, a configuration in which a high refractive index resin is filled in the gap between the light emitting element and the optical waveguide can reduce the diffusion of light between the light emitting element and the optical waveguide. It is thought that efficiency can be improved.
- Patent Document 1 Japanese Patent Publication “JP 2000-214351 (Publication Date: August 4, 2000)”
- Patent Document 2 Japanese Published Patent Publication “JP 2000-9968 Publication (Publication Date: January 2000) Disclosure of the invention
- the optical waveguide 101 facing the optical element 102 comes into contact with the resin 103 to be filled, the light guide is caused by curing shrinkage when the resin 103 is cured.
- the position of the waveguide 101 changes, and the alignment accuracy with the optical element 102 is adversely affected.
- the optical waveguide 101 is a film optical waveguide having high flexibility, the above-described problem occurs remarkably.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to align the optical waveguide and the optical element with high accuracy, and to detect light between the optical waveguide and the optical element.
- the purpose is to realize an optical module capable of suppressing optical loss in coupling.
- an optical module is an optical module comprising an optical transmission path and at least one optical element having a light receiving function or a light emitting function on a support substrate.
- the light emitting surface of the light transmission path or the light incident surface of the light transmission path is opposite to the light receiving surface or light emitting surface of the optical element.
- the optical element is sealed with a sealant, and the surface of the sealant on the light receiving surface or the light emitting surface of the optical element; and the light An air gap is provided between the transmission line and the transmission line.
- the method for manufacturing an optical module according to the present invention is a method for manufacturing an optical module comprising an optical transmission line and at least one optical element having a light receiving function or a light emitting function on a support substrate. Then, an optical element is mounted on the support substrate, and after applying a sealant to the predetermined thickness from above, a first step of curing is performed, and an optical transmission line is bonded and fixed on the support substrate. And the optical transmission path has an optical path conversion mirror, and the light exit surface of the optical transmission path or the light incident face to the optical transmission path is the optical element.
- the thickness of the sealant is set at a position where the optical element and the optical transmission path are optically coupled to the light receiving surface or the light emitting surface. , Above light It is characterized in that the thickness is set such that a space exists between the light receiving surface of the element or the surface of the sealing agent on the light emitting surface and the optical transmission path.
- the optical element means a light emitting element on the light incident side to the optical transmission path and a light receiving element on the light exit side from the optical transmission path.
- FIG. 1, showing an embodiment of the present invention is a cross-sectional view showing a main configuration of an optical module.
- FIG. 2 is a view showing the unevenness of the sealing resin generated in the optical module, wherein (a) is a sectional view and (b) is a top view.
- FIG. 3 is a graph showing the relationship between the thickness of the sealing resin and the shrinkage ratio.
- FIG. 4 showing an embodiment of the present invention, is a cross-sectional view showing the main configuration of an optical module.
- FIG. 5, showing an embodiment of the present invention is a cross-sectional view showing a main part configuration of an optical module.
- FIG. 6, showing an embodiment of the present invention is a cross-sectional view showing the main configuration of an optical module.
- FIG. 7, showing an embodiment of the present invention, is a cross-sectional view showing the main configuration of an optical module.
- FIG. 8, showing an embodiment of the present invention is a cross-sectional view showing a main part configuration of an optical module.
- FIG. 9 shows an embodiment of the present invention and is a cross-sectional view showing a main configuration of an optical module.
- FIG. 10 showing an embodiment of the present invention, is a cross-sectional view showing the main configuration of an optical module.
- FIG. 11 shows an embodiment of the present invention and is a cross-sectional view showing a configuration of a main part of an optical module.
- FIG. 12 showing an embodiment of the present invention, is a cross-sectional view showing a main configuration of an optical module.
- FIG. 13 shows an embodiment of the present invention and is a cross-sectional view showing a main configuration of an optical module.
- FIG. 14 is a cross-sectional view illustrating a configuration of a main part of an optical module according to an embodiment of the present invention.
- FIG. 15, showing an embodiment of the present invention is a cross-sectional view showing the main configuration of an optical module.
- FIG. 16 shows an embodiment of the present invention and is a cross-sectional view showing a main configuration of an optical module.
- FIG. 17 is a diagram showing a schematic configuration of an optical transmission module according to the present embodiment.
- FIG. 18 (a) is a perspective view showing the external appearance of a foldable mobile phone provided with the optical transmission module according to the present embodiment, and (b) is a view of the foldable mobile phone shown in (a). It is a block diagram of the part to which the said optical transmission line is applied, (c) is a perspective top view of the hinge part in the foldable mobile phone shown to (a).
- FIG. 19 (a) is a perspective view showing an appearance of a printing apparatus provided with the optical transmission module according to the present embodiment
- FIG. 19 (b) is a block diagram showing a main part of the printing apparatus shown in FIG. (C) and (d) are perspective views showing the curved state of the optical transmission line when the printer head is moved (driven) in the printing apparatus.
- FIG. 20 is a perspective view showing an external appearance of a hard disk recording / reproducing apparatus including the optical transmission module according to the present embodiment.
- FIG. 21 is a cross-sectional view showing the main configuration of a conventional optical module.
- FIG. 22 shows signal light diffusion in a conventional optical module.
- FIG. 23 is a cross-sectional view showing a main configuration of a conventional optical module.
- the optical module 1 shown in FIG. 1 is generally configured to include an optical transmission path 10, an optical element 11, a sealing agent 12, and a support substrate 13 in the vicinity of the end portion.
- the optical waveguide 10 is used as the optical transmission line
- the sealing resin 12 is used as the sealing agent.
- the end of the optical waveguide 10 is fixed to the support substrate 13 by adhesion or the like, and the relative positional relationship between the end of the optical waveguide 10 and the optical element 11 is fixed.
- the optical module 1 may include an electrical wiring or an electrical connection portion in order to facilitate extraction of an electrical signal output from the optical element 11.
- the optical element 11 is a light emitting element such as a laser diode (an optical element having a light emitting function) at the light incident side end to the optical waveguide 10, and a light emitting element at the light emitting side end from the optical waveguide 10.
- a light receiving element such as a diode (an optical element having a light receiving function).
- the optical waveguide 10 is constituted by a core portion 10A, an upper cladding layer 10B, and a lower cladding layer 10C. That is, the optical waveguide 10 has a laminated structure in which the core portion 10A is sandwiched between the upper cladding layer 10B and the lower cladding layer 10C.
- the optical signal transmitted through the optical waveguide 10 travels in the core portion 10A while being reflected at the interface between the core portion 10A and the upper cladding layer 10B or the interface between the core portion 10A and the lower cladding layer 10C. .
- the longitudinal direction (optical axis direction) of the optical waveguide 10 is the X-axis direction, and the stacking direction of the core portion 10A, the upper cladding layer 10B, and the lower cladding layer 10C. Is the Y-axis direction.
- the Y-axis direction also coincides with the normal direction of the mounting surface of the optical element 11 on the support substrate 13.
- the signal emitted from the light emitting element 11 is incident on the incident surface of the optical path conversion mirror 10D, then reflected by the optical path conversion mirror 10D, and changes its traveling direction to change the core. Transmitted part 10.
- the light exit surface (or incident surface) of the optical waveguide 10 is provided on the outer surface of the lower cladding layer 10C (or the upper cladding layer 10B) by providing the optical path conversion mirror 10D.
- the light receiving surface (or light emitting surface) of the optical element 11 is disposed so as to face the light emitting surface (or incident surface) of the optical waveguide 10.
- the inclination angle ⁇ of the optical path conversion mirror 10D is normally set to 45 ° so that the optical path conversion mirror 10D and the optical element 11 can be easily aligned.
- the optical path conversion mirror may be one in which a mirror part is externally attached to the end of the optical waveguide 10.
- sealing resin 12 One of the roles of the sealing resin 12 is to protect the optical element 11 from dust and moisture by sealing the optical element 11 and to improve the reliability of the optical module 1.
- the other important role of the sealing resin 12 is to prevent the diffusion of the optical signal transmitted between the optical waveguide 10 and the optical element 11 and to suppress the optical loss due to the diffusion of the optical signal. is there.
- a transparent resin such as epoxy, acrylic, silicone, or urethane having a high refractive index can be suitably used.
- a remarkable point is that the sealing resin 12 does not fill the entire gap between the optical waveguide 10 and the optical element 11. This is a point where a gap is provided. That is, a gap is provided between the surface of the sealing resin 12 on the light receiving surface or the light emitting surface of the optical element 11 and the exit surface or the incident surface of the optical waveguide 10.
- the optical element 11 is mounted on the surface 13a of the support substrate 13, and the upper surface of the optical module 11 is coated with the sealing resin 12 to a predetermined thickness. After curing. Thereafter, the optical waveguide 10 is bonded on the surface 13b of the support substrate 13 and fixed.
- the surface of the optical waveguide 10 facing the optical element 11 is sealed. Since it has a structure without contact with the resin 12, the curing shrinkage of the sealing resin 12 does not affect the optical waveguide 10. Therefore, high positional accuracy can be realized when the optical waveguide 10 is bonded and fixed to the support substrate 13.
- most of the gap between the optical waveguide 10 and the optical element 11 can be filled with the sealing resin 12. Thereby, the diffusion of light between the optical waveguide 10 and the optical element 11 can be reduced, and the optical coupling efficiency can be improved by this action.
- the gap provided between the sealing resin 12 and the optical waveguide 10 has a width (width in the Y-axis direction) that does not allow the optical waveguide 10 and the sealing resin 12 to contact each other. It is preferable to make it as small as possible.
- the width of the gap provided between the sealing resin 12 and the optical waveguide 10 is preferably in the range of 5 to 50 m in view of the current manufacturing accuracy.
- the surface of the optical module 1 is cured by shrinkage of the sealing resin 12 on the surface as shown in FIGS.
- the difference in height (unevenness) as shown is generated. That is, since the layer thickness of the sealing resin 12 is different between the region where the optical element 11 is present and the region where the optical element 11 is not present, the above-described unevenness is caused by the difference in the shrinkage amount of the sealing resin 12.
- the thickness of the optical element 11 is 150 / zm and the thickness of the sealing resin 12 is 200 m
- the surface is deformed around the optical element 11 and a difference in height is generated. (Shown by hatching in Fig. 2 (b)).
- the width of the region where this height difference occurred was about 30 ⁇ m.
- the surface of the sealing resin 12 serves as an incident or exit surface for light, if such irregularities occur on the surface of the sealing resin 12, undesired light diffusion occurs, resulting in optical diffusion. This can cause loss and cause noise in the optical signal. For this reason, on the surface of the sealing resin 12, it is preferable to suppress the occurrence of the unevenness as described above and bring it close to a flat surface. Next, various configurations and methods for obtaining flatness on the surface of the sealing resin 12 will be described.
- the thickness of the sealing resin 12 in the Y-axis direction is sufficiently larger than the thickness of the optical element 11.
- the sealing resin 12 is cured, if there is a difference in layer thickness between adjacent regions, the curing is completed first in the region where the layer thickness is thin. For this reason, when curing is performed in a thin layer area, the shrinkage of the sealing resin 12 is increased in the adjacent thick layer area. The reduction of the layer thickness is less likely to be compensated by drawing in powerful resin. On the other hand, in the thick layer region that hardens later, the layer thickness decreases due to the curing shrinkage of the sealing resin 12, so that the unevenness as shown in FIGS. 2 (a) and 2 (b) occurs.
- the sealing resin 12 may be formed by laminating a plurality of layers in the Y-axis direction.
- FIG. 4 shows an example in which the sealing resin 12 has a two-layer structure of a first resin layer 12A and a second resin layer 12B.
- the sealing resin 12 has a laminated structure of a plurality of layers, after the lower resin layer (the first resin layer 12A in FIG. 4) is cured, the upper resin layer (In FIG. 4, the second resin layer 12B) is applied and cured.
- the unevenness generated in the lower resin layer that has been cured first can be flattened in the upper resin layer that is formed later.
- the number of laminations of the sealing resin 12 is limited to two layers as in the example of FIG. It may be more than 3 layers. Further, in order to prevent undesired reflection of light at the interface between the laminated resin layers, it is preferable that the refractive index of each sealing resin layer be as close as possible. However, it is effective if the refractive index is closer to that of air.
- the height of the substrate surface of the support substrate 13 is increased in the peripheral region of the optical element 11, It is conceivable that the height of the raised support substrate and the surface of the support substrate should be almost uniform in the Y-axis direction. In other words, the problem of unevenness as shown in Fig. 2 is due to the difference in layer thickness between adjacent regions as described above. Raise the height of the support substrate 13 in the peripheral area of the optical element 11. Thus, if the periphery of the light receiving / emitting surface of the optical element 11 is made substantially uniform, the difference in the layer thickness of the sealing resin 12 around the light receiving / emitting surface can be eliminated. In addition, it is possible to suppress the occurrence of irregularities in the surface of the transmission region of the optical signal transmitted between the optical waveguide 10 and the optical element 11.
- the support substrate 13 may be raised over the entire periphery of the light receiving / emitting surface as shown in FIG. 5, or may be performed over a part of the periphery of the light receiving / emitting surface as shown in FIG. Ideally, it is preferable that the light receiving surface of the optical element 11 and the surface of the support substrate 13 with increased force be continuous. However, in order to facilitate the mounting of the optical element 11 on the support substrate 13, a certain gap (the gap L in FIGS. 5 and 6) is provided between the optical element 11 and the force-raised portion of the support substrate 13. ) May be provided.
- the occurrence of the unevenness as shown in FIG. 2 is also attributed to the pulling in of the resin having a thick region strength adjacent to the region having a thin layer thickness during curing.
- the rib 14 it is possible to suppress the pulling of such a resin, that is, the movement of the sealing resin 12 at the time of curing shrinkage.
- a flat plate 15 is applied on the applied sealing resin 12 so that the surface of the sealing resin 12 does not become uneven when the sealing resin 12 is cured. It is conceivable to cure the sealing resin 12 in a state where the is placed. The flat plate 15 can be removed after the sealing resin 12 is cured. If the flat plate 15 is a transparent resin plate or glass plate, the flat plate 15 remains after the sealing resin 12 is cured. Well, okay.
- FIG. 10 shows an example in which a part of the support substrate 13 is thinned and deformed following the curing shrinkage of the sealing resin 12. Rubber, thinned resin, metal plate, etc. can be used for the deformed part.
- FIG. 11 shows that at least a part of the supporting substrate 13 in contact with the sealing resin 12 is made of a deformable material such as rubber or silicone resin, and follows the curing shrinkage of the sealing resin 12.
- a deformable material such as rubber or silicone resin
- FIG. 12 shows an example in which a deformable member 16 that deforms following the curing shrinkage of the sealing resin 12 is provided in at least a part of the contact portion with the sealing resin 12.
- a deformable member 16 that deforms following the curing shrinkage of the sealing resin 12 is provided in at least a part of the contact portion with the sealing resin 12.
- a thin metal plate or a resin plate can be suitably used.
- the thickness of the sealing resin 12 is made sufficiently thinner than the thickness of the optical element 11. That is, since the surface of the sealing resin 12 is made lower than the height of the optical element 11, the shrinkage of the sealing resin 12 around the optical element 11 causes the sealing resin on the optical element 11 to shrink. 12 can be prevented from being affected. In this case, a thin film of the sealing resin 12 is formed on the surface of the optical element 11 at a portion higher than the surface of the sealing resin 12 due to the wettability of the sealing resin 12. The optical element 11 can be sealed by the resin film
- the first to fifth methods prevent the occurrence of irregularities on the surface of the resin resulting from the curing shrinkage of the sealing resin 12. .
- the surface of the support substrate 13 is uneven due to the effect of the surface tension of the seal resin 12 when the sealing resin 12 is applied onto the support substrate 13. May occur.
- the surface of the application surface of the sealing resin 12 on the support substrate 13 is wetted. It is preferable to increase the property. As a method of increasing the wettability of the support substrate 13,
- the contact surface with the sealing resin 12 on the support substrate 13 (X-axis) A step may be provided on the surface perpendicular to the surface. In this case, the unevenness can be prevented by making the stepped surface substantially coincide with the surface of the sealing resin 12.
- each configuration and method described in FIGS. 1 to 15 is a force illustrating the case where it is applied at the end of the support substrate 13.
- the present invention is not limited to this in FIG. As shown, the present invention can be applied to any part of the support substrate 13.
- a plurality of application portions of the present invention may be provided on one support substrate 13.
- the optical module 1 can function as the optical transmission module 1 by including a light receiving element and a light emitting element at both ends of the optical waveguide 10 that is an optical transmission path.
- FIG. 17 shows a schematic configuration of the optical transmission module 1 according to the present embodiment. As shown in the figure, the optical transmission module 1 includes an optical transmission processing unit 2, an optical reception processing unit 3, and an optical waveguide 10.
- the optical transmission processing unit 2 includes a light emission drive unit 5 and a light emission unit 6.
- the light emission drive unit 5 drives the light emission of the light emission unit 6 based on the electrical signal input from the external force.
- the light emission drive unit 5 is constituted by, for example, an IC (Integrated Circuit) for light emission drive. Although not shown in the figure, the light emission drive unit 5 is provided with an electrical connection part with an electrical wiring for transmitting an electrical signal from the outside.
- the light emitting unit 6 emits light based on drive control by the light emission driving unit 5.
- the light emitting unit 6 is composed of a light emitting element such as VCSEL (Vertical Cavity-Surface Emitting Laser). The light emitted from the light emitting unit 6 is applied to the light incident side end of the optical waveguide 10 as an optical signal.
- VCSEL Vertical Cavity-Surface Emitting Laser
- the optical reception processing unit 3 includes an amplification unit 7 and a light receiving unit 8.
- the light receiving unit 8 receives light as an optical signal emitted from the light emitting side end of the optical transmission path 4 and outputs an electrical signal by photoelectric conversion.
- the light receiving unit 8 is composed of a light receiving element such as a PD (Photo-Diode).
- the amplifying unit 7 amplifies the electrical signal output from the light receiving unit 8 and outputs the amplified signal to the outside.
- the amplifier 7 is constituted by an amplification IC, for example.
- the amplifying unit 7 is provided with an electrical connection portion with electrical wiring for transmitting an electrical signal to the outside.
- the optical waveguide 10 is a medium that transmits the light emitted from the light emitting unit 6 to the light receiving unit 8 as described above.
- optical transmission module of the present invention can be applied to the following application examples, for example.
- the optical transmission module of the present invention only the optical waveguide 10 is illustrated, and the other portions are not illustrated.
- a hinge unit in a foldable electronic device such as a foldable mobile phone, a foldable PHS (Personal Handyphone System), a foldable PDA (Personal Digital Assistant), or a foldable notebook personal computer. Can be used.
- a foldable electronic device such as a foldable mobile phone, a foldable PHS (Personal Handyphone System), a foldable PDA (Personal Digital Assistant), or a foldable notebook personal computer.
- FIG. 18 shows an example in which the optical transmission module including the optical waveguide 10 is applied to the foldable mobile phone 40. That is, FIG. 18A is a perspective view showing the external appearance of a foldable mobile phone 40 incorporating the optical waveguide 10.
- FIG. 18 (b) is a block diagram of a portion to which the optical waveguide 10 is applied in the foldable mobile phone 40 shown in FIG. 18 (a).
- the control unit 41 provided on the main body 40a side in the foldable mobile phone 40, and the lid (drive unit) 40b provided on one end of the main body so as to be rotatable about the hinge part are provided.
- An external memory 42, a camera unit (digital camera) 43, and a display unit (liquid crystal display display) 44 are connected by an optical waveguide 10, respectively.
- FIG. 18 (c) is a perspective plan view of the hinge portion (portion surrounded by a broken line) in FIG. 18 (a).
- the optical waveguide 10 is wound around a support rod in the hinge portion and bent to thereby control the control portion provided on the main body side, the external memory 42 provided on the lid side, and the camera.
- the unit 43 and the display unit 44 are connected to each other.
- optical waveguide 10 By applying the optical waveguide 10 to these foldable electronic devices, high-speed and large-capacity communication can be realized in a limited space. Therefore, for example, it is particularly suitable for a device that requires high-speed and large-capacity data communication such as a foldable liquid crystal display device and requires downsizing.
- the optical transmission module including the optical waveguide 10 can be applied to a device having a drive unit such as a printer head in a printing device (electronic device) or a reading unit in a hard disk recording / reproducing device.
- FIG. 19 shows an example in which the optical waveguide 10 is applied to the printing apparatus 50.
- FIG. 19A is a perspective view showing the appearance of the printing apparatus 50.
- the printing apparatus 50 includes a printer head 51 that performs printing on the paper 52 while moving in the width direction of the paper 52.
- One end of the optical waveguide 10 is connected to the printer head 51. It has been.
- FIG. 19B is a block diagram of a portion of the printing apparatus 50 to which the optical waveguide 10 is applied. As shown in this figure, one end of the optical waveguide 10 is connected to the printer head 51, and the other end is connected to the main body side substrate in the printing apparatus 50. The main body side substrate is provided with control means for controlling the operation of each part of the printing apparatus 50.
- FIGS. 19C and 19D are perspective views showing the curved state of the optical waveguide 10 when the printer head 51 is moved (driven) in the printing apparatus 50.
- FIG. As shown in this figure, when the optical waveguide 10 is applied to a drive unit such as the printer head 51, the curved state of the optical waveguide 10 is changed by driving the printer head 51, and each position of the optical waveguide 10 is changed. It is curved repeatedly.
- the optical waveguide 10 according to the present embodiment is suitable for these drive units.
- the optical waveguide 10 is applied to these drive units, high-speed and large-capacity communication using the drive units can be realized.
- FIG. 20 shows an example in which the optical waveguide 10 is applied to a node disk recording / reproducing apparatus 60.
- the hard disk recording / reproducing device 60 includes a disk (node disk) 61, a head (read / write head) 62, a substrate introduction part 63, a drive part (drive motor) 6 4, an optical A waveguide 10 is provided.
- the drive unit 64 drives the head 62 along the radial direction of the disk 61.
- the head 62 reads information recorded on the disk 61 and writes information on the disk 61.
- the head 62 is connected to the substrate introducing portion 63 via the optical waveguide 10, and propagates information read from the disk 61 to the substrate introducing portion 63 as an optical signal, and is also propagated from the substrate introducing portion 63. It also receives an optical signal of information to be written on the disc 61.
- the optical module according to the present invention is an optical module including an optical transmission path and at least one optical element having a light receiving function or a light emitting function on a support substrate,
- the light emitting surface of the light transmission path or the light incident surface to the light transmission path is optically coupled to the light receiving surface or light emitting surface of the light element.
- the optical element is sealed with a sealant, and the surface of the sealant on the light-receiving surface or the light-emitting surface of the optical element and the optical transmission line It is characterized in that a gap is provided between them.
- the method for manufacturing an optical module according to the present invention is a method for manufacturing an optical module comprising an optical transmission path and at least one optical element having a light receiving function or a light emitting function on a support substrate. Then, an optical element is mounted on the support substrate, and after applying a sealant to the predetermined thickness from above, a first step of curing is performed, and an optical transmission line is bonded and fixed on the support substrate. And the optical transmission path has an optical path conversion mirror, and the light exit surface of the optical transmission path or the light incident face to the optical transmission path is the optical element.
- the thickness of the sealant is set at a position where the optical element and the optical transmission path are optically coupled to the light receiving surface or the light emitting surface.
- the thickness is set such that a space exists between the light receiving surface of the element or the surface of the sealing agent on the light emitting surface and the optical transmission path.
- the optical element means a light emitting element on the light incident side to the optical transmission path and a light receiving element on the light exit side from the optical transmission path.
- the sealant may be formed by laminating a plurality of layers in the normal direction of the mounting surface of the optical element on the support substrate. .
- the sealing agent is formed by laminating a plurality of layers, and a layer formed later is laminated after the layer formed earlier is cured. It can be configured.
- the sealing agent has a laminated structure of a plurality of layers, so that the lower resin layer is cured and then the upper resin layer is applied and cured. As a result, the unevenness generated in the lower resin layer that has been cured first can be flattened in the upper resin layer formed later.
- the substrate surface of the support substrate is increased in at least a part of the peripheral region of the optical element, and the increased substrate surface of the support substrate and the light
- the light emitting / receiving surface of the element can be configured to have a substantially uniform height with respect to the normal direction of the mounting surface of the optical element on the support substrate.
- the height of the support substrate is increased in the peripheral region of the optical element, and the periphery of the light receiving and emitting surface of the optical element is made substantially uniform, so that Of sealant The difference in layer thickness can be eliminated, and the occurrence of unevenness on the surface of the sealant can be suppressed.
- the optical module it is ideal that no space is provided between the optical transmission line and the optical transmission line on the sealing agent. Considering the mounting of the optical element, it is preferable that the optical elements are mounted with an interval approximately equal to the thickness of the sealant.
- the sealing agent in the first step, is cured in a state where a flat plate is placed on the sealing agent applied on the support substrate. It can be configured.
- the sealant is cured in a state where the flat plate is placed on the applied sealant, so that no unevenness is generated on the surface when the sealant is cured. Can be done.
- the flat plate may be removed after the sealant is cured, but if the flat plate is made of a light-transmitting member, it may be left after the sealant is cured! /.
- At least a part of the support substrate in contact with the sealing agent is provided with a region that deforms following the curing shrinkage of the sealing agent. It can be configured.
- At least a part of the support substrate in contact with the sealant is provided with a region that deforms following the curing shrinkage of the sealant. Curing shrinkage during curing of the agent can be absorbed by deformation of the above region. As a result, it is possible to prevent such a problem that a gap is generated between the sealing agent and the flat plate, or a density difference is generated in the cured sealing agent, so that a uniform refractive index cannot be obtained.
- the optical module may have a configuration in which a member having higher wettability than the support substrate is sandwiched between the support substrate and the sealant.
- a process for improving wettability on the surface of the support substrate for example, Substrate surface treatment such as corona discharge, plasma treatment, and UV cleaning, and primer application to the substrate surface.
- Substrate surface treatment such as corona discharge, plasma treatment, and UV cleaning
- the surface of the sealing agent on the light receiving surface or the light emitting surface of the optical element may be subjected to a flattening treatment.
- the layer thickness of the sealant is 1.5 times or more the thickness of the optical element with respect to the normal direction of the mounting surface of the optical element on the support substrate. It is possible to adopt the configuration as follows.
- the film thickness ratio T2ZT1 can be reduced by making the layer thickness of the sealant sufficiently thicker than the thickness of the optical element, and when the sealant is cured, Unevenness due to curing shrinkage can be suppressed.
- the layer thickness of the sealant is thinner than the thickness of the optical element with respect to the normal direction of the mounting surface of the optical element on the support substrate. That's right.
- the surface of the sealing resin is made to be lower than the height of the optical element, so that the shrinkage of the sealing resin around the optical element causes the sealing on the optical element. It can be made not to affect anti-fouling oil.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Integrated Circuits (AREA)
- Optical Couplings Of Light Guides (AREA)
- Semiconductor Lasers (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/296,495 US8696216B2 (en) | 2006-04-14 | 2007-04-12 | Optical module, method of producing optical module, optical transmission module, and electronic apparatus |
CN2007800135026A CN101421651B (zh) | 2006-04-14 | 2007-04-12 | 光模块、光模块的制造方法、光传送模块以及电子设备 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-112775 | 2006-04-14 | ||
JP2006112775A JP4367430B2 (ja) | 2006-04-14 | 2006-04-14 | 光モジュール、光モジュールの製造方法、光伝送モジュール、および電子機器 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007119778A1 true WO2007119778A1 (ja) | 2007-10-25 |
Family
ID=38609538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/058054 WO2007119778A1 (ja) | 2006-04-14 | 2007-04-12 | 光モジュール、光モジュールの製造方法、光伝送モジュール、および電子機器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8696216B2 (ja) |
JP (1) | JP4367430B2 (ja) |
KR (1) | KR100994350B1 (ja) |
CN (1) | CN101421651B (ja) |
WO (1) | WO2007119778A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101636675B (zh) | 2007-03-16 | 2011-11-23 | 欧姆龙株式会社 | 光传输路径封装、光传输模块、电子设备及光传输模块的制造方法 |
JP5157964B2 (ja) * | 2009-02-27 | 2013-03-06 | オムロン株式会社 | 光伝送モジュール、電子機器、及び光伝送モジュールの製造方法 |
TWI364122B (en) * | 2009-07-06 | 2012-05-11 | Led package structure for increasing light-emitting efficiency and controlling light-projecting angle and method for manufacturing the same | |
JP5467826B2 (ja) | 2009-09-16 | 2014-04-09 | 日東電工株式会社 | 光電気混載モジュールおよびその製造方法 |
KR20110039017A (ko) * | 2009-10-09 | 2011-04-15 | 엘지이노텍 주식회사 | 광인쇄회로기판 및 그 제조방법 |
EP2556543B1 (en) * | 2010-04-06 | 2020-08-12 | OY ICS Intelligent Control Systems Ltd | Laminate structure with embedded cavities for use with solar cells and related method of manufacture |
TWI600936B (zh) * | 2011-10-13 | 2017-10-01 | 國立中央大學 | 光學傳輸系統及其製備方法 |
JP6070709B2 (ja) * | 2012-08-23 | 2017-02-01 | 株式会社村田製作所 | 光伝送モジュール |
JP6518113B2 (ja) | 2015-04-10 | 2019-05-22 | ヒロセ電機株式会社 | 光電気変換コネクタ及びその製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0532804Y2 (ja) * | 1986-06-06 | 1993-08-23 | ||
JP2004133117A (ja) * | 2002-10-09 | 2004-04-30 | Mitsubishi Electric Corp | 樹脂封止型光モジュール |
JP2005062645A (ja) * | 2003-08-19 | 2005-03-10 | Toppan Printing Co Ltd | 光接続構造体およびその製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2531263Y2 (ja) | 1991-10-04 | 1997-04-02 | 住友建機株式会社 | 油圧機器に於ける慣性体制御装置 |
CN1203374A (zh) * | 1997-06-25 | 1998-12-30 | 松下电器产业株式会社 | 光收发信设备及其制造方法以及光半导体组件 |
JP2000009968A (ja) | 1998-06-19 | 2000-01-14 | Matsushita Electric Ind Co Ltd | 受光モジュール |
JP2001154066A (ja) * | 1999-12-01 | 2001-06-08 | Nec Corp | 光トランシーバ用光学系ユニット |
JP3257776B2 (ja) | 1999-01-21 | 2002-02-18 | 日本電信電話株式会社 | 光モジュール実装構造 |
JP2001059923A (ja) * | 1999-06-16 | 2001-03-06 | Seiko Epson Corp | 光モジュール及びその製造方法、半導体装置並びに光伝達装置 |
JP4134499B2 (ja) * | 2000-08-07 | 2008-08-20 | 住友電気工業株式会社 | 光学装置 |
JP2004354532A (ja) | 2003-05-27 | 2004-12-16 | Seiko Epson Corp | 光モジュール及びその製造方法、光通信装置、電子機器 |
-
2006
- 2006-04-14 JP JP2006112775A patent/JP4367430B2/ja not_active Expired - Fee Related
-
2007
- 2007-04-12 CN CN2007800135026A patent/CN101421651B/zh not_active Expired - Fee Related
- 2007-04-12 WO PCT/JP2007/058054 patent/WO2007119778A1/ja active Application Filing
- 2007-04-12 US US12/296,495 patent/US8696216B2/en not_active Expired - Fee Related
- 2007-04-12 KR KR1020087019175A patent/KR100994350B1/ko not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0532804Y2 (ja) * | 1986-06-06 | 1993-08-23 | ||
JP2004133117A (ja) * | 2002-10-09 | 2004-04-30 | Mitsubishi Electric Corp | 樹脂封止型光モジュール |
JP2005062645A (ja) * | 2003-08-19 | 2005-03-10 | Toppan Printing Co Ltd | 光接続構造体およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4367430B2 (ja) | 2009-11-18 |
KR100994350B1 (ko) | 2010-11-12 |
CN101421651A (zh) | 2009-04-29 |
JP2007286289A (ja) | 2007-11-01 |
US8696216B2 (en) | 2014-04-15 |
KR20080085202A (ko) | 2008-09-23 |
CN101421651B (zh) | 2010-08-18 |
US20090274412A1 (en) | 2009-11-05 |
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