A kind of composite mask plate
Technical field
The utility model relates to the electronic printing field, relates in particular to a kind of composite mask plate.
Background technology
Electronic circuit surface installation technique (Surface Mount Technology, SMT) be a kind of being arranged on the surface of the surface of printed circuit board or other substrate without pin or short leg surface-assembled components and parts, by the methods such as Reflow Soldering or the immersed solder circuit load technology of welding assembly in addition.Its perforation plug-in unit relatively in the past has following advantage: packing density is high, the electronic product volume is little, lightweight, the volume and weight of surface mount elements only has 1/10 left and right of traditional inserting element, after general employing SMT, electronic product volume-diminished 40%~60%, weight saving 60%~80%.
In the SMT industry, the SMT template is an important link.Wherein, laser legal system SMT metal form has been the mainstream technology of template, and the application on present market has occupied more than 90% of total quantity; And chemical corrosion method is due to himself quality and environmental factor and substantially be in the situation of being eliminated fully; But in high-end product, be still that nickel addition process (electrocasting) occupies main flow.Main cause is that laser is a kind of similar process as burning, even precision is very high, also is difficult to reach definitely smooth effect, namely can have the roughness of about 3 μ m, and is still not very very good to the printing effect of the following device of 0.5mmpitch centre-to-centre spacing.But the nickel addition process need to through the operation of the easy loss precision such as figure transfer, from the positioning accuracy angle, still not as laser method, add that there are the inherent shortcomings such as environmental pollution in it in manufacture process.Therefore, industry is both being sought without roughness always, has again the new template manufacturing technology of high this advantage of laser method precision.
The utility model content
In view of this, need to overcome at least one in defects of the prior art.The utility model provides a kind of composite mask plate.
Described composite mask plate comprises the two-layer connection slab construction that mutually is adjacent at least, at least one deck is metal-layer structure, at least one deck is the non-metallic layer structure, fits closely between described metal-layer structure and described non-metallic layer structure, is provided with pass through openings on described composite shuttering.
because the common preparation method of present template substantially still uses the homogeneity monolayer material to make, what occupied total quantity as the application in present market 90% or more has been also the laser legal system SMT metal form of the mainstream technology of template, and chemical corrosion method, nickel addition process (electrocasting) etc. is all also to use the homogeneity monolayer material to make, be difficult to avoid the problem of existence in the individual layer making, in laser method, although have very high precision, but burning impact and must evitablely have certain roughness due to laser, and not only there is certain loss of significance in the nickel addition process but also easily bring environmental pollution, and the composite mask plate that the utility model provides adopts the different scutum layer of Laser Processing multilayer structure, utilizes material self specific, can solve the problem that individual layer making in the past exists.
In addition, composite mask board component disclosed according to the utility model also has a following additional technical feature:
Further, described pass through openings is the pass through openings structure of utilizing laser cutting to form.
Preferably, described pass through openings is the pass through openings structure of utilizing the Ultra-Violet Laser cutting to form.
Preferably, described composite mask plate is the three-layer sandwich structure, namely comprises the two metal layers structure and is placed in one deck non-metallic layer structure between two-layer described metal-layer structure.
Further, described non-metallic layer structural thickness is greater than described metal-layer structure thickness.
Preferably, described non-metallic layer structural thickness is less than 500 μ m.
Further, described non-metallic layer structure is polymer layer structure.
Preferably, described polymer layer structure is the plastic material layer structure that resistance to acids and bases is strong, pliability is strong.
Utilize laser to carry out pass through openings processing to non-metallic layer of the present utility model, can keep laser method to make all characteristics of template, can possess again the nickel addition process without the advantage of roughness, also possess simultaneously other incomparable advantages of metal material, as, it is good that plastics have the perforate hole wall quality, and roughness is little, has splendid slurry releasing effect during printing; Relative metal material template, the disclosed non-metallic layer structure of the utility model, preferred polymers layer structure belongs to flexible material, therefore with substrate, seamless contacting arranged in printing process, this seamless contact can make printing quality control obtain ensureing reliably.
Further, described metal-layer structure is nickel or nickel alloy layer structure.
Alternatively, described metal level is coating or coating.
Alternatively, the permeable formation that permeates mutually of described metal level right and wrong metal level or the metal-layer structure that comprises the permeable formation that permeates mutually with non-metallic layer.
Described metal-layer structure, be preferably nickel or nickel alloy layer structure, the very thin thickness of metal-layer structure, due to having of metal certain hardness and wearability, it can provide certain protection and supporting role to described non-metallic layer structure, improves the service life of mask plate, and the use of non-metallic layer structure has reduced the roughness that the Laser Processing metal form brings, also make simultaneously the composite mask plate keep good with contacting of substrate, be convenient to printing quality control reliably; The thickness of metal level and polymeric layer all can be controlled according to actual requirement and can avoid to a greater extent the described metal level pass through openings of Laser Processing roughness on the impact of product quality.
The invention also discloses the composite mask board component that utilizes described composite mask plate to make, comprise described composite mask plate, screen frame.
Described composite mask board component also comprises for the silk screen that mask plate is fixed on screen frame.
Described composite mask plate can directly connect with screen frame, also can indirectly connect with screen frame by described silk screen.
The aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Shown in Figure 1 is composite mask plate double-layer structure schematic diagram;
It is composite mask plate three-decker schematic diagram shown in Fig. 2;
Fig. 3 is the upper surface schematic diagram of a kind of composite mask strip of the utility model pass through openings;
Fig. 4 is the utility model double-layer structure composite mask board component schematic diagram;
Fig. 5 is the utility model three-decker composite mask board component schematic diagram;
Wherein, in Fig. 1,10 for interrupting a little, and 11 is two-ply non-metallic layer structure, and 12 is the two-ply metal-layer structure;
In Fig. 2,21 is three ply board non-metallic layer structure, and 22,23 is the three ply board metal-layer structure;
In Fig. 3,31 are the default pass through openings of template surface;
In Fig. 4,41 is that 42 is screen frame for the silk screen that template is fixed on housing 42;
The specific embodiment
The below describes embodiment of the present utility model in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, need to prove, unless clear and definite regulation and restriction are separately arranged, term " connection ", " connection ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, connecting integratedly, can be also to removably connect; It can be the connection of two element internals; Can be directly to be connected, also can indirectly be connected by intermediary, for the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
utility model design of the present utility model is as follows, because the common preparation method of present template substantially still uses the homogeneity monolayer material to make, what occupied total quantity as the application in present market 90% or more has been also the laser legal system SMT metal form of the mainstream technology of template, and chemical corrosion method, nickel addition process (electrocasting) etc. is all also to use the homogeneity monolayer material to make, be difficult to avoid the problem of existence in the individual layer making, in laser method, although have very high precision, but burning impact and must evitablely have certain roughness due to laser, and not only there is certain loss of significance in the nickel addition process but also easily bring environmental pollution, and the composite mask plate that the utility model provides adopts the different scutum layer of Laser Processing multilayer structure, utilizes material self specific, can solve the problem that individual layer making in the past exists.
Describe below with reference to accompanying drawings mask frame of the present utility model and corresponding mask assembly thereof, wherein shown in Figure 1 is composite mask plate double-layer structure schematic diagram; It is composite mask plate three-decker schematic diagram shown in Fig. 2; Fig. 3 is the upper surface schematic diagram of a kind of composite mask strip of the utility model pass through openings; Fig. 4 is the utility model double-layer structure composite mask board component schematic diagram; Fig. 5 is the utility model three-decker composite mask board component schematic diagram.
According to embodiment of the present utility model, a kind of composite mask plate, as shown in Fig. 1-2, at least comprise the two-layer connection slab construction that mutually is adjacent to, at least one deck is metal-layer structure, at least one deck is the non-metallic layer structure, and described metal-layer structure is combined closely with described non-metallic layer structure, is provided with pass through openings on described composite shuttering.
According to an embodiment of the present utility model, as shown in Figure 1, consisted of by two-layer flat layer, comprise two-ply non-metallic layer structure 11 and two-ply metal-layer structure 12, two-ply non-metallic layer structure 11 and two-ply metal-layer structure 12 are adjacent to connection by certain way, have pass through openings 31 on the composite mask plate of double-layer structure, as 31 in Fig. 3, pass through openings 31 is used for leaking under slurry.
According to an embodiment of the present utility model, as shown in Figure 2, consisted of by the three layer flat plate layer, comprise three ply board non-metallic layer structure 21 and three ply board metal- layer structure 22,23, three ply board non-metallic layer structure 21 is between two-ply metal-layer structure 22 and by certain way and is adjacent to connection, have pass through openings 31 on the composite mask plate of three-decker, as 31 in Fig. 3, pass through openings 31 is used for leaking under slurry.
According to embodiment more of the present utility model, the pass through openings structure of described pass through openings 31 for utilizing laser cutting to form.
According to embodiment more of the present utility model, the pass through openings structure of described pass through openings 31 for utilizing the Ultra-Violet Laser cutting to form.
According to embodiment of the present utility model, the non-metallic layer structure 21 of described three-decker, two-layer structure, 11 thickness are respectively greater than the metal- layer structure 22,23 of described three-decker, two-layer structure, 12 thickness.
Preferably, described non-metallic layer structure 21,11 thickness are less than 500 μ m.
According to embodiment more of the present utility model, preferably, described non-metallic layer structure 21,11 is polymer layer structure.
According to embodiment more of the present utility model, further preferably, described polymer layer structure is the plastic material layer structure that resistance to acids and bases is strong, pliability is strong.
According to embodiment more of the present utility model, described metal- layer structure 12,22,23 is nickel or nickel alloy layer structure.
Further preferably, metal level 12,22, the 23rd, the coat of metal.
According to embodiment more of the present utility model, metal level 12,22,23 is coating or coating.
According to embodiment more of the present utility model, the permeable formation that metal level 12,22,23 right and wrong metal levels permeate mutually or the metal-layer structure that comprises the permeable formation that permeates mutually with non-metallic layer.
The invention also discloses the composite mask board component that utilizes described composite mask plate to make, as shown in Fig. 4,5, comprise described composite mask plate, screen frame 42.
According to embodiment more of the present utility model, described composite mask board component also comprises for the silk screen 41 that mask plate is fixed on screen frame, as shown in Figure 4.
According to embodiment more of the present utility model, described composite mask plate can directly connect with screen frame, as shown in Figure 5, also can indirectly connect with screen frame 42 by described silk screen 41.
When adding man-hour, slurry be placed on the composite mask plate of described composite mask board component and carry out lower leakage by pass through openings 31, complete printing work.
Any mentioning " embodiment ", " embodiment ", " illustrative examples " etc. mean to be contained at least one embodiment of the present utility model in conjunction with concrete member, structure or characteristics that this embodiment describes.Not necessarily refer to identical embodiment in this schematic statement everywhere of this specification.And when describing concrete member, structure or characteristics in conjunction with any embodiment, what advocate is, within realizing that in conjunction with other embodiment such member, structure or characteristics all drop on those skilled in the art's scope.
Although with reference to a plurality of illustrative examples of the present utility model, the specific embodiment of the present utility model is described in detail, but it must be understood that, those skilled in the art can design multiple other improvement and embodiment, and these improve and within embodiment will drop on the spirit and scope of the utility model principle.Particularly, within the scope of aforementioned open, accompanying drawing and claim, can make rational modification and improvement aspect the layout of parts and/or subordinate composite configuration, and can not break away from spirit of the present utility model.Except modification and the improvement of parts and/or layout aspect, its scope is limited by claims and equivalent thereof.