WO2014132974A1 - 基板の製造方法と基板とマスクフィルム - Google Patents
基板の製造方法と基板とマスクフィルム Download PDFInfo
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- WO2014132974A1 WO2014132974A1 PCT/JP2014/054601 JP2014054601W WO2014132974A1 WO 2014132974 A1 WO2014132974 A1 WO 2014132974A1 JP 2014054601 W JP2014054601 W JP 2014054601W WO 2014132974 A1 WO2014132974 A1 WO 2014132974A1
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- solder resist
- mask film
- resist layer
- layer
- substrate
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
- G03C1/95—Photosensitive materials characterised by the base or auxiliary layers rendered opaque or writable, e.g. with inert particulate additives
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/50—Mask blanks not covered by G03F1/20 - G03F1/34; Preparation thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0012—Processes making use of the tackiness of the photolithographic materials, e.g. for mounting; Packaging for photolithographic material; Packages obtained by processing photolithographic materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2014—Contact or film exposure of light sensitive plates such as lithographic plates or circuit boards, e.g. in a vacuum frame
- G03F7/2016—Contact mask being integral part of the photosensitive element and subject to destructive removal during post-exposure processing
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
- G03F7/203—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure comprising an imagewise exposure to electromagnetic radiation or corpuscular radiation
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/40—Treatment after imagewise removal, e.g. baking
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49866—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers characterised by the materials
- H01L23/49894—Materials of the insulating layers or coatings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
- H05K1/0269—Marks, test patterns or identification means for visual or optical inspection
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/285—Permanent coating compositions
- H05K3/287—Photosensitive compositions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/099—Coating over pads, e.g. solder resist partly over pads
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09936—Marks, inscriptions, etc. for information
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/05—Patterning and lithography; Masks; Details of resist
- H05K2203/0548—Masks
- H05K2203/056—Using an artwork, i.e. a photomask for exposing photosensitive layers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/05—Patterning and lithography; Masks; Details of resist
- H05K2203/0562—Details of resist
- H05K2203/0571—Dual purpose resist, e.g. etch resist used as solder resist, solder resist used as plating resist
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
Definitions
- the present invention relates to a substrate manufacturing method, a substrate, and a mask film in which a solder resist layer is formed on at least one surface of the substrate body.
- Patent Document 1 a circuit board having a circuit pattern formed on one or both surfaces is known (see Patent Document 1).
- Such a circuit board is provided with a solder resist layer for protecting a circuit pattern, and characters and symbols for mounting electronic components are displayed on the upper surface of the solder resist layer.
- An object of the present invention is to provide a substrate manufacturing method capable of displaying characters and the like with a small number of steps using a solder resist layer, a substrate manufactured by this manufacturing method, and a mask film used for the manufacturing method. It is to provide.
- a solder resist ink made of a mixed resin of an epoxy resin and an acrylic resin is applied to form a solder resist layer, and this solder resist layer is irradiated with ultraviolet rays, By adjusting the irradiation amount of the ultraviolet rays for irradiating the predetermined portion of the solder resist layer, the predetermined portion is made transparent to transmit light.
- FIG. 2 is a cross-sectional view taken along line AA of the circuit board shown in FIG.
- FIG. 2 is a partial cross-sectional perspective view in which a part of the circuit board shown in FIG. It is the fragmentary sectional perspective view which showed the circuit board of 2nd Example.
- It is the schematic diagram which showed the cross section of the circuit board of 2nd Example before forming a character etc. It is explanatory drawing which showed the state which covered the circuit board shown in FIG. 4 with the mask film.
- a circuit board (substrate) 10 shown in FIGS. 1 to 3 includes a circuit board main body 11, and circuit patterns 12, 13 made of, for example, copper foil formed on at least one surface (upper surface) of the circuit board main body 11.
- the circuit patterns 12 and 13 and the solder resist layer 20 formed on the circuit board main body 11 are constituted.
- Part of the solder resist layer 20 on the lands 12D1, 12D2, 13D1, and 13D2 of the circuit patterns 12 and 13 is removed, and holes 15a to 15d are formed.
- the lands 12D1, 12D2, 13D1, and 13D2 of the circuit patterns 12 and 13 are exposed through the holes 15a to 15d, and electronic parts and the like are soldered to the lands 12D1, 12D2, 13D1, and 13D2. ing.
- the display portions 21, 22, and 23 such as A, B, and C-shaped characters in a plan view are transparent, that is, are transparent to transmit light.
- the letters A, B, and C are displayed.
- the color of the solder resist layer 20 and the color of the circuit board body 11 are different.
- the solder resist layer 20 by making a part of the solder resist layer 20 a transparent portion having a predetermined shape, information (for example, characters and symbols (including figures and marks)) of electronic components mounted on the circuit board 10 can be displayed. That is, characters and symbols can be displayed in the shape of the display portions 21 to 23.
- the solder resist layer 20 is made of a mixed resin of an epoxy resin and an acrylic resin, and display portions (information display portions) 21 to 23 which are predetermined portions are transparent, and other portions are opaque. .
- the inventor reduces the irradiation amount of the ultraviolet rays irradiated to the mixed resin of the epoxy resin and the acrylic resin, only the surface of the irradiated portion is cured, and the layer of the irradiated portion is not removed by the development process, and the transparency is not removed. It was found that the irradiated portion was cured by heat treatment, and the irradiated portion became transparent.
- Characters and the like are displayed on the circuit board 10 by utilizing this property, and it is possible to manufacture a circuit board displaying characters and the like only by changing the irradiation intensity in the normal ultraviolet irradiation process. it can. Furthermore, the solder resist layer 20 that protects the circuit pattern is used without mixing or adding another substance to the mixed resin of the thermosetting epoxy resin and the photocurable acrylic resin. Therefore, it can be manufactured with existing equipment without introducing new equipment.
- the display portions 21 to 23 of the solder resist layer 20 showing the letters A, B, and C are made transparent so that the ground color of the circuit board body 11 can be visually recognized through the display portions 21 to 23. Since the characters A, B, and C are simply displayed, there is no need to provide an ink layer on the solder resist layer 20 and perform exposure, development, heat treatment, etc., as in the prior art. The number can be reduced. Further, even if the surfaces of the display portions 21 to 23 are rubbed, the display content does not disappear.
- FIG. 3A shows a circuit board 30 of the second embodiment.
- an ink layer (colored layer) 31 is provided as a primer layer between the circuit board body 11 and the solder resist layer 20, and the letters A, B, and C are indicated by the color of the ink layer 31. Is displayed. By selecting the color of the ink layer 31, characters and the like can be displayed more clearly.
- the colored layer 31 is formed with ink, but other than ink may be used as long as the colored layer can be formed.
- a method for manufacturing the circuit board 30 as a substrate will be briefly described.
- circuit patterns 32a to 32c (the circuit patterns 32a to 32c are not displayed in FIG. 3A, but are described here for convenience of description) in the previous process.
- An ink layer 31 as a primer layer is formed on the produced circuit board body 11.
- the ink layer 31 is formed directly on the circuit board main body 11 in portions where the circuit patterns 32a to 32c are not formed.
- the thickness of the ink layer 31 is 2 ⁇ m to 300 ⁇ m, preferably 5 ⁇ m to 150 ⁇ m.
- the ink layer 31 is formed by, for example, screen printing, roll coating, curtain coating, spray coating, bar coating, ink jet, electrostatic coating, and the like, as in the past.
- the colored ink forming the ink layer 31 has a functional group.
- the solder resist layer 20 is formed.
- the thickness of the solder resist layer 20 is preferably 5 ⁇ m to 150 ⁇ m.
- the solder resist layer 20 is formed by the same coating method as that for the ink layer 31.
- a shade mask film (mask film) 40 for forming display portions 21 to 23 is placed on the solder resist layer 20 as shown in FIG.
- the black portion 41 of the light and shade mask film 40 cuts ultraviolet rays
- the dot portion 42 is a portion that transmits a small amount of ultraviolet rays, that is, a portion that reduces the amount of ultraviolet irradiation
- the white portion 43 is a portion that transmits almost 100% of ultraviolet rays. is there.
- the dot portion 42 is a first portion having a low ultraviolet transmittance
- the white portion 43 is a second portion having a high ultraviolet transmittance
- the black portion 41 is a third portion that does not transmit ultraviolet rays.
- a predetermined pattern is formed by the arrangement of the dot portion 42, the white portion 43, and the black portion 41.
- the solder resist layer 20 is exposed by irradiating ultraviolet rays from above the light and shade mask film 40.
- the irradiation amount of ultraviolet rays is 10 to 2000 [mJ / cm 2 ], preferably 100 to 1500 [mJ / cm 2 ].
- This exposure makes the portion of the solder resist layer 20 that is strongly irradiated with ultraviolet rays harden and become opaque. Further, the portion irradiated with weak ultraviolet rays has a light transmitting property and is cured in a transparent state.
- the irradiation amount is 10 [mJ / cm 2 ] or less, the portions other than the display portions 21 to 23 (see FIG. 1) are in a transparent state, and the characters A, B, and C are unclear.
- the irradiation amount is 2000 [mJ / cm 2 ] or more, the reaction proceeds so much that the display portions 21 to 23 become opaque, and the letters A, B, and C become unclear. In addition, the working time is wasted and fogging occurs.
- the portion of the solder resist layer 20 that is not irradiated with ultraviolet rays is removed, and the other portions remain.
- the removal for example, holes 15a to 15d shown in FIG. 1 are formed.
- the residual portion 20a is a portion with a large amount of ultraviolet irradiation
- the residual portion 20b is a portion with a small amount of ultraviolet irradiation.
- the remaining portion 20b is transparent and the remaining portion 20a is opaque.
- the remaining portions 20a and 20b are fixed to the ink layer 31 by heat treatment, and the circuit board 30 is completed.
- This heat treatment increases the transparency of the remaining portion 20b. That is, by this heat treatment, the refractive index and transparency of the residual portion 20b change, and the shape of the residual portion 20b, which is a predetermined portion, passes through the base color due to the difference in refractive index and transparency between the residual portion 20b and the residual portion 20a. In addition, it will be visible in the dormitory.
- the mixing ratio of the epoxy resin and the acrylic resin in the solder resist layer 20 is arbitrary, but the ratio of the epoxy resin is preferably about 40% to 80%, and the ratio of the epoxy resin is slightly increased.
- the proportion is 50.1% to 64%.
- it is 40% or less or 80% or more, it is difficult to obtain the contrast between the transparent portion and the opaque portion with respect to the change in the irradiation amount of ultraviolet rays, and the characters become unclear.
- the solder resist layer 20 may be dried in such a degree that does not hinder the exposure in the next step, and the temperature is 40 ° C. to 120 ° C., preferably 60 ° C. to 95 ° C. The time is 5 minutes to 100 minutes, preferably 10 minutes to 70 minutes. If the dry state is sweet, the mixed resin of the solder resist layer 20 adheres to the light and dark mask film 40, and it takes time to remove the adhering mixed resin and the workability is deteriorated. Further, the mixed resin adheres to the light / dark mask film 40, so that the thickness of the solder resist layer 20 becomes insufficient, which hinders circuit protection.
- the cross-linking / polymerization reaction proceeds excessively with the amount of heat, and the solder resist remains on the non-image area, which is an unnecessary part of the solder dyst layer 20 in the development process, and the components cannot be mounted.
- the image portions 42 and 43 of the light and dark mask film 40 are shaded so that a difference in the amount of transmitted ultraviolet rays is generated, whereby a predetermined portion of the solder resist layer (solder resist ink layer) is obtained.
- the refractive index and the transparency of the predetermined portion are changed, and the shape of the predetermined portion can be visually recognized through the base color by the difference in the refractive index and the transparency between the predetermined portion and the other portion. That is, the character or symbol indicated by the shape of the predetermined portion can be visually recognized.
- FIG. 7 shows the second manufacturing method.
- a negative type solder mask film (first pattern mask film: solder resist mask film) 140 is placed on the solder resist layer 20 formed in the same manner as in the first manufacturing method.
- the black portion 141 of the solder mask film 140 cuts ultraviolet rays, and the white portion 142 is a portion that transmits almost 100% of ultraviolet rays.
- the solder mask layer 140 is irradiated with ultraviolet rays to primarily expose the solder resist layer 20.
- the irradiation amount of ultraviolet rays is 10 to 300 [mJ / cm 2 ], preferably 40 to 150 [mJ / cm 2 ]. Since this irradiation amount is small, the irradiated portion of the solder resist layer 20 is irradiated with weak ultraviolet rays. This part has the property of transmitting light and the surface of the part is cured.
- the irradiation amount is 10 [mJ / cm 2 ] or less, curing is insufficient, and the solder resist layer 20 of the display portions 21 to 23 (see FIG. 1) is dropped in the development process. Above 300 [mJ / cm 2 ], the transparency of the display portions 21 to 23 is lowered.
- solder mask film for characters (second pattern mask film: mask film for characters / symbols) 150 is placed on the solder mask film 140.
- the black portion 152 of the character solder mask film 150 cuts ultraviolet rays, and the white portion 151 is a portion that transmits almost 100% of ultraviolet rays.
- the mask film which adjusts the irradiation amount of an ultraviolet-ray is comprised by the solder mask film 140 and the solder mask film 150 for characters.
- Ultraviolet rays are irradiated from above the solder mask film 150 for characters. That is, secondary exposure is performed.
- the irradiation dose is 50 to 800 [mJ / cm 2 ], preferably 100 to 600 [mJ / cm 2 ].
- ultraviolet rays are transmitted through only the portion where the white portion 142 of the solder mask film 140 and the white portion 151 of the character solder mask film 150 overlap, and irradiates the solder resist layer 20.
- the irradiation dose is 50 [mJ / cm 2 ] or less or 800 [mJ / cm 2 ] or more.
- the portion 20c of the solder resist layer 20 is removed, and thereafter, by performing heat treatment after drying, the remaining portions 20a and 20b are formed in the ink layer 31 as shown in FIG.
- the circuit board 30 is completed.
- an ink layer 31 is provided as a primer layer between the circuit board main body 11 and the solder resist layer 20, but the same kind as the solder resist layer 20 is provided under the ink layer 31, as shown in FIG.
- the solder resist layer or another kind of solder resist layer 60 may be provided, and the ink layer 31 may be a conductive ink layer.
- FIG. 11 shows a magnetic card 400 which is a substrate on which characters and the like are formed in the same manner as described above.
- a magnetic layer 402 and a solder resist layer 403 are provided on the upper surface of a magnetic card main body (substrate main body) 401.
- a letter A is applied to the solder resist layer 403 by the first manufacturing method or the second manufacturing method.
- B and C are formed by display portions 421 to 423 which are predetermined portions.
- This magnetic card 400 also does not require a printing process for displaying characters.
- the present invention can be applied to an IC card (substrate) 500 in which an IC chip 502 is embedded in an IC card main body 501.
- a solder resist layer 503 is provided on the upper surface of the IC card main body 501 and the upper surface of the IC chip 502, and characters A and B are formed on the solder resist layer 503 by the first manufacturing method or the second manufacturing method.
- C are formed by display portions (predetermined portions) 521 to 523.
- a solder resist layer is formed on the surface of a nameplate body (not shown) which is a substrate body, and characters and the like are formed in the same manner as described above.
- a display panel (substrate) provided with a display unit, operation switches, and the like.
- a solder resist layer is formed on the surface of a display panel body (not shown), which is a substrate body, and characters and the like are formed in the same manner as described above.
- the display portions 21 to 23, 421 to 423, and 521 to 523 are all transparent, but as shown in FIG. 13, the character portion 600 is made opaque and its peripheral portion is a predetermined portion.
- the characters 601 may be displayed by making 601 transparent.
- the solder resist layer 610 is provided with a display portion 611 that is, for example, a rectangular transparent predetermined portion, and characters 613 and the like formed on the upper surface of the substrate body 612 can be visually recognized via the display portion 611. You may do it.
- the substrate having the solder resist layer formed on one surface of the substrate body has been described. However, in the case of the substrate having the solder resist layer formed on both surfaces of the substrate body, the same manner as described above is applied. You may provide a character part in both surfaces.
- Experimental examples and comparative examples are shown below. Common equipment used in the experimental examples and comparative examples is as follows. (1) Tokai Shinei Electronics Co., Ltd. test substrate, double-sided through-hole substrate finished up to etching, the size is 500 dm 2 (250 mm ⁇ 200 mm) (hereinafter referred to as substrate) (2) Abrasive grain # 180 is used with a scrubbing machine manufactured by Ishii Co., Ltd.
- the coloring ink is applied by a screen printer DF65P manufactured by Mino Group.
- Solder resist ink is applied by DF65P screen printing machine manufactured by Mino Group.
- the coloring ink is SSR-6500C manufactured by Yamaei Chemical Co., Ltd.
- the warm air dryer is a BOX dryer manufactured by Mesh Co., Ltd.
- the exposure machine is THE-7000MC manufactured by Hitec Corporation.
- the developer is a 2% (v / v) solution of trade name developer D-701 manufactured by Yamatoya Corporation.
- the developing machine is manufactured by Tokyo Chemical Industry Co., Ltd.
- the mask film for solder resist is a negative type for testing by Tokai Shinei Electronics Co., Ltd. (11)
- the mask film for characters is a positive type for testing by Tokai Shinei Electronics Co., Ltd.
- the solder resist ink is a mixed resin of an epoxy resin and a partially carboxylic acid remaining acrylic resin, or an epoxy resin in which a partially carboxylic acid remaining acrylic resin is added.
- Substrate body 11 Surface conditioning and drying ⁇ Colored ink application ⁇ Dry A ⁇ Application of MSR (solder resist layer) ⁇ Dry B ⁇ Primary exposure ⁇ Secondary exposure ⁇ Development (30 ° C, 0.25 MPa, 1 / of effective chamber length The speed is adjusted so that development can be performed in step 2) ⁇ drying (50 minutes / 150 ° C.) ⁇ evaluation Table 1 shows the working conditions of Examples 1 to 9.
- the product name SSR-6600W of Sanei Chemical Co., Ltd. was used for the MSR.
- the shape of the predetermined part can be visually recognized through the base color by the difference in refractive index and transparency between the predetermined part and the other part.
- the used solder resist ink does not contain an epoxy resin (hereinafter referred to as SR), and is a product name Photofiner PSR-4000 CC02 / CA-40 of Taiyo Ink Manufacturing Co., Ltd.
- Substrate Surface conditioning and drying ⁇ Application of primary MSR (primary solder resist layer) ⁇ Dry C ⁇ Application of colored ink ⁇ Dry D ⁇ Application of secondary MSR (secondary solder resist layer) ⁇ Dry E ⁇ Primary exposure ⁇ Secondary Exposure ⁇ Development (Adjusting speed so that development is possible at 30 ° C, 0.25 MPa, 1/2 of the effective chamber length) ⁇ Drying (50 minutes / 150 ° C) ⁇ Evaluation Table 3 shows the working conditions of Experimental Examples 10-13 Show. The product name SSR-6600 of Yamaei Chemical Co., Ltd. was used for the first and second solder resist layers.
- Table 4 shows the working conditions for Comparative Examples 3 and 4.
- the primary and secondary SR used are the product name Photofiner PSR-4000 CC02 / CA-40 of Taiyo Ink Manufacturing Co., Ltd.
- the MSR primary and secondary solder resist layers used is the product name SSR-6600W of Yamaei Chemical Co., Ltd.
- Table 6 shows the working conditions of Comparative Example 5.
- SR used was the product name Photofiner PSR-4000 CC02 / CA-40 of Taiyo Ink Manufacturing Co., Ltd.
- FIG. 15 is an explanatory view schematically showing a case where the solder resist layer 20 is subjected to primary exposure using the synthetic mask film 50.
- Reference numeral 51 denotes a portion for cutting out ultraviolet rays, which is a mask for solder resist.
- 52 is a character mask
- 53 is a portion that transmits almost 100% of ultraviolet rays
- the transmittance of the character mask 52 is 15 to 35%.
- secondary exposure is performed using a solder resist mask film (not shown). This exposure order may be reversed.
- the MSR used is the product name SSR-6600W of Sanei Chemical Co., Ltd.
- the MSR used is the product name SSR-6600W of Sanei Chemical Co., Ltd.
- SR used was the product name Photofiner PSR-4000 CC02 / CA-40 of Taiyo Ink Manufacturing Co., Ltd.
- the evaluation method has four stages in which a character such as an identification character / symbol is clearly readable, readable, unclear, but readable on a circuit board after MSR and SR processing in a predetermined brightness room. was visually evaluated.
Abstract
Description
図1ないし図3に示す回路基板(基板)10は、回路基板本体11と、この回路基板本体11の少なくとも一方の面(上面)に形成された例えば銅箔からなる回路パターン12,13と、この回路パターン12,13及び回路基板本体11の上に形成されたソルダーレジスト層20とから構成されている。
[第2実施例]
図3Aは、第2実施例の回路基板30を示す。この回路基板30は、回路基板本体11とソルダーレジスト層20との間にプライマー層としてインク層(着色層)31を設けたものであり、インク層31の色でA,B,Cの文字が表示される。インク層31の色を選択することにより、より鮮明に文字などを表示することができる。
[製造方法]
次に、基板である回路基板30の製造方法について簡単に説明する。
[第1製造方法]
先ず、図4に示すように、前工程で回路パターン32a~32c(図3Aに回路パターン32a~32cが表示されていないが、ここでは、説明の便宜上、表示されているものとして説明する)が作製された回路基板本体11の上にプライマー層としてのインク層31を形成する。回路パターン32a~32cが形成されていない部分には、図示していないが回路基板本体11の上に直接インク層31が形成されることになる。
[第2製造方法]
図7に第2製造方法を示す。この第2製造方法は、第1製造方法と同様に形成したソルダーレジスト層20の上にネガタイプのソルダーマスクフィルム(第1パターンマスクフィルム:ソルダーレジスト用マスクフィルム)140を被せる。ソルダーマスクフィルム140の黒部分141が紫外線をカットし、白部分142が紫外線をほぼ100%透過する部分である。
[第3実施例]
図11は、上記と同様にして文字などを形成した基板である磁気カード400を示す。この磁気カード400は、磁気カード本体(基板本体)401の上面に磁気層402とソルダーレジスト層403とを設けたものであり、ソルダーレジスト層403に第1製造方法または第2製造方法で文字A,B,Cを所定部分である表示部分421~423で形成したものである。この磁気カード400も文字を表示するための印刷工程は不要となる。
[実験例]
次に、実験例と比較例を以下に示す。実験例及び比較例に使用される共通機材は下記の通りである。
(1)東海神栄電子工業(株)のテスト用基板の、エッチングまで終了した両面スルホール基板、そのサイズは500dm2(250mm×200mm)(以後、基板と言う)
(2)整面(ブラシ研磨)には、(株)石井表記製のスクラブ研磨機で砥粒#180。
(3)着色インキの塗布は、(株)ミノグループ社製のスクリーン印刷機DF65P。
(4)ソルダーレジストインキの塗布は、(株)ミノグループ社製のスクリーン印刷機DF65P。
(5)着色インキは、山栄化学(株)社製SSR-6500C。
(6)温風乾燥機は、メッシュ(株)社製BOX 乾燥機。
(7)露光機は、(株)ハイテック社製のTHE-7000MC。
(8)現像液は、(株)ヤマトヤ商会社製の商品名現像液D-701の2%(v/v)溶液。
(9)現像機は、東京化工機(株)製。
(10)ソルダーレジスト用のマスクフィルムは、東海神栄電子工業(株)のテスト用のネガタイプ。
(11)文字用マスクフィルムは、東海神栄電子工業(株)のテスト用のポジタイプ。
実施例1~9の作業条件は表1に示す。なお、MSRには、山栄化学(株)の製品名SSR-6600Wを使用した。
実験例10~13の作業条件は表3に示す。第1,第2ソルダーレジスト層には、山栄化学(株)の製品名SSR-6600を使用した。
実験例14~17の作業条件は表5に示す。
実施例18~20の作業条件は表7に示す。
実験例21~24の作業条件を表8に示す。
Claims (23)
- 基板本体の少なくとも一方の面に、エポキシ系樹脂とアクリル樹脂との混合樹脂からなるソルダーレジストインキを塗布してソルダーレジスト層を形成し、
このソルダーレジスト層を紫外線で照射するとともに、前記ソルダーレジスト層の所定部分を照射する紫外線の照射量を調整することにより、前記所定部分を光が透過する透過性にすることを特徴とする基板の製造方法。 - 前記ソルダーレジスト層と基板本体との間に着色層を形成することを特徴とする請求項1に記載の基板の製造方法。
- 前記着色層は、プライマー層として形成することを特徴とする請求項2に記載の基板の製造方法。
- 前記ソルダーレジスト層に紫外線を照射して露光した後、現像処理を行い、この後熱処理を行うことを特徴とする請求項1ないし請求項3のいずれか1項に記載の基板の製造方法。
- 前記紫外線の照射量の調整は、前記ソルダーレジスト層にマスクフィルムを被せて行い、その照射量を減少させることを特徴とする請求項1ないし請求項3のいずれか1項に記載の基板の製造方法。
- 前記紫外線の照射量の調整は、前記ソルダーレジスト層にマスクフィルムを被せて行い、その照射量を減少させることを特徴とする請求項4に記載の基板の製造方法。
- 前記マスクフィルムは、紫外線の透過量が異なる黒色の濃淡が施され且つ前記ソルダーレジスト層の所定部分に対応する前記マスクフィルムの部分の濃淡が所定濃度となっていることを特徴とする請求項5に記載の基板の製造方法。
- 前記基板本体は、少なくとも一方の面に形成された回路パターンを有し、この回路パターンを保護するための前記ソルダーレジスト層が形成され、
このソルダーレジスト層を紫外線で露光した後、現像処理し、この後、熱処理を行う請求項5に記載の基板の製造方法であって、
前記マスクフィルムは、前記ソルダーレジスト層の不要部分を現像処理によって除去する除去部分を形成するために用意された第1パターンマスクフィルムと、文字または記号を形成するために用意された文字・記号用の第2パターンマスクフィルムとであり、
前記ソルダーレジスト層の上に、第1,第2パターンマスクフィルムのうちどちらか一方を被せて該ソルダーレジスト層を紫外線で一次露光し、
この後、前記一方の第1パターンマスクフィルムまたは第2パターンマスクフィルムの上に他方の第2パターンマスクフィルムまたは第1パターンマスクフィルムを被せて前記ソルダーレジスト層を紫外線で二次露光して、前記所定部分のみを透過性にし、この所定部分の形状で文字または記号を表示するようにしたことを特徴とする基板の製造方法。 - 回路基板に、エポキシ系樹脂と一部カルボン酸残存のアクリル系樹脂の混合、或いは、エポキシ系樹脂に一部カルボン酸残存のアクリル系樹脂を付加させた、ソルダーレジストインキを塗布し、紫外線の照射量を変化させ、ソルダーレジストインキ層の、屈折率や透明度を変化させ、その屈折率や透明度の差より、搭載部品等の識別文字・記号等が、下地色を介して視認できることを特徴とする回路基板の製造方法。
- 官能基を有した着色インキを回路基板とソルダーレジストインキ塗膜層間に、プライマー層として設ける。その厚みは、2μm~300μmを特徴とした請求項9に記載した回路基板の製造方法。
- 官能基を有した着色インキ層をソルダーレジストインキ層とソルダーレジストインキ層間に設ける。その厚みは、2μm~300μmを特徴とした請求項9に記載した回路基板の製造方法。
- ソルダーレジスト用マスクフィルムを用いて一次露光を行い、その後、ソルダーレジスト用マスクフィルムと文字・記号用マスクフィルムを重ね合わせて二次露光を行うか、又は、この露光順序を逆に行って、照射量を変化させることを特徴とした、請求項9ないし請求項11のいずれか1項に記載した回路基板の製造方法。
- ソルダーレジスト部分と文字・記号部分を同一フィルム上に合成した、マスクフィルムを用いて一次露光を行い、その後、ソルダーレジスト用マスクフィルムで二次露光を行うか、又は、この露光順序を逆に行って、照射量を変化させることを特徴とした、請求項9ないし請求項11のいずれか1項に記載した回路基板の製造方法。
- マスクフィルムの画線部に紫外線の透過量に差が生じる事ができるように、濃淡を施したマスクフィルムを用いることを特徴とした、請求項9ないし請求項11のいずれか1項に記載した回路基板の製造方法。
- 乾燥熱量を変化させ、ソルダーレジストインキ層の、屈折率や透明度を変化させ、その屈折率や透明度の差により、搭載部品等の識別文字が下地色を介して視認できることを特徴とした、請求項9ないし請求項11のいずれか1項に記載した回路基板の製造方法。
- ソルダーレジストインキ層の表面上に、搭載部品等の識別文字・記号等を付加しない事を特徴とする請求項9ないし請求項11のいずれか1項に記載した回路基板の製造方法。
- 基板本体の少なくとも一方の面に、エポキシ系樹脂とアクリル系樹脂との混合樹脂からなるソルダーレジスト層を形成した基板であって、
紫外線の照射によって前記ソルダーレジスト層の所定部分だけを光が透過する透過性にしたことを特徴とする基板。 - 前記ソルダーレジスト層と基板本体との間に着色層を形成したことを特徴とする請求項17に記載の基板。
- 請求項17に記載の基板であって、
前記ソルダーレジスト層を2層に形成し、この2層の間に着色層または導電性の着色層を設けたことを特徴とする基板。 - 前記基板本体は、銘板本体または表示パネル本体であることを特徴とする請求項17ないし請求項19のいずれか1項に記載の基板。
- 前記基板本体は、少なくも一方の面に回路パターンが形成され、この回路パターンが前記ソルダーレジスト層で保護された回路基板本体であり、
前記所定部分は、その回路基板本体に搭載される電子部品の情報を示す文字または記号を表示する形状に形成されていることを特徴とする請求項17ないし請求項19のいずれか1項に記載の基板。 - 前記基板本体は、磁気記録層を設けた磁気カード本体またはICチップを埋め込んだICカード本体であることを特徴とする請求項17ないし請求項19のいずれか1項に記載の基板。
- 請求項7に記載の基板の製造方法に使用されるマスクフィルムであって、
前記マスクフィルムは、濃淡が所定濃度で紫外線の透過率の小さい第1部分と、この第1部分より濃度が薄く紫外線の透過率の大きい第2部分と、第1部分より濃度が濃く紫外線を透過しない第3部分とを有し、
第1部分で前記ソルダーレジスト層の透明な所定部分を形成し、第2部分で前記ソルダーレジスト層の不透明な部分を形成し、第3部分により前記ソルダーレジスト層の除去部分を形成することを特徴とするマスクフィルム。
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KR20150120421A (ko) | 2015-10-27 |
TW201503790A (zh) | 2015-01-16 |
CN104255086A (zh) | 2014-12-31 |
TWI535353B (zh) | 2016-05-21 |
US20160011514A1 (en) | 2016-01-14 |
US9857687B2 (en) | 2018-01-02 |
KR101802046B1 (ko) | 2017-11-27 |
CN104255086B (zh) | 2018-09-18 |
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