JP2006332187A - Sheet for electronic component holding tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet for electronic component holding tool that can be used for a long time even if it is used while another adhesive layer is adhered to a base plate, or it is used for application in which heat acts. <P>SOLUTION: The sheet is comprised of: an adhesive layer 10 which is stacked and adhered to the surface of the base plate of an electronic component holding tool; an adhesive layer 11 which is provided opposite to the adhesive layer 10 to adhere and hold a flexible substrate to/on a weak adhesive surface 12 on its surface in freely attachable/detachable manner; and a reinforcing layer 13 interposed between the adhesive layers 10 and 11. The sheet can function as a double-side tape, so that another sheet can be adhered to the base plate later and it cane be also used freely, thus satisfying requirements of workers or users, etc. In addition, heat resistance property can be given to the adhesive layers 10 and 11 and the reinforcing layer 13, so that the sheet can be used several hundred times without replacing, even when it is used for application such as reflow process in which heat strongly acts, and workability or convenience can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic component holder sheet constituting an electronic component holder.

Although not shown, the conventional electronic component holder is configured to include a hard base plate and an adhesive layer that is firmly laminated and fixed to the surface of the base plate and holds the electronic component in an attachable and detachable manner ( Patent Document 1).
JP 2001-14430 A

  In the conventional electronic component holder, the adhesive layer is fixed to the base plate in advance as described above. However, depending on the work environment, the worker, or the electronic component, a separate adhesive layer may be attached to the prepared base plate later. There is a desire to use them individually. As a means for satisfying this demand, a method of attaching an acrylic double-sided adhesive tape to a base plate and using it has been proposed. However, when this method is adopted, applications where heat acts strongly, such as reflowing, are proposed. In use, the double-sided pressure-sensitive adhesive tape must be replaced after 2 to 3 uses, resulting in a new major problem that workability is poor and it is actually inconvenient.

  The present invention has been made in view of the above, and is used for an electronic component holder that can be used over a long period of time even if it is used by attaching a separate adhesive layer to a base plate, for example, in an application where heat acts. The purpose is to provide a seat.

  In order to solve the above-mentioned problems, the present invention includes an adhesive layer provided on a hard base plate and an adhesive layer provided on the adhesive layer and detachably attached to an electronic component on a weak adhesive surface. It is characterized by.

In addition, it is good to provide the reinforcement layer interposed between an adhesion layer and an adhesion layer.
An adhesive layer can be adhered to at least one of the surface of the base plate and the recess.
Moreover, heat resistance can also be provided to the adhesive layer, the pressure-sensitive adhesive layer, and / or the reinforcing layer.

  In order to solve the above-described problems, the present invention is characterized in that at least one of both surfaces of the adhesive layer is a weakly adhesive surface that detachably holds an electronic component.

Furthermore, the manufacturing method which manufactures an electronic component holder using the sheet | seat for electronic component holders in any one of Claims 1 thru | or 4,
A sheet for an electronic component holder is attached to a flexible substrate made of a protective film, etc., and a base plate and a substrate are stacked and set on a positioning jig, and pressure is applied to the substrate to apply electrons to the base plate. The component holder sheet may be transferred, and then the substrate may be removed.

Furthermore, the manufacturing method which manufactures an electronic component holder using the sheet | seat for electronic component holders in any one of Claims 1 thru | or 4,
It is good also as sticking the sheet | seat for electronic component holders on a base board, and removing the unnecessary part.

  Here, the adhesive layer, the pressure-sensitive adhesive layer, and the reinforcing layer in the claims preferably have heat resistance when the electronic component is mounted by solder reflow or the like. The adhesive layer includes an adhesive layer, and the term adhesion of the adhesive layer includes an adhesive. The electronic component includes at least a plurality of circuit boards represented by a flexible board, a semiconductor wafer, various circuit elements, and the like. The recess includes a plurality of through holes and counterbore. Furthermore, the electronic component holder sheet is not particularly limited to a single sheet, a plurality of sheets, a single layer, a double layer, a triple layer, or a multiple layer. For example, the electronic component holder sheet may include a primer layer that improves adhesion.

According to the present invention, there is an effect that a separate adhesive layer can be attached to the base plate for use.
Moreover, if a reinforcing layer is provided between the adhesive layer and the adhesive layer, the strength and durability of the electronic component holder sheet can be improved.
In addition, if an adhesive layer is adhered to at least one of the surface of the base plate and the concave portion, there is a demand from an operator or user who wants to selectively stick the adhesive layer to the surface or concave portion of the base plate. Can be satisfied.

Moreover, if heat resistance is imparted to the adhesive layer, the pressure-sensitive adhesive layer, and / or the reinforcing layer, it can be used over a long period of time, even if it is used in applications where heat acts, improving workability and convenience. Can do.
Further, if at least one of both surfaces of the adhesive layer is a weak adhesive surface that detachably holds an electronic component, there is an effect that the number of parts and the material can be reduced.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. An electronic component holder sheet according to the present embodiment is laminated on a base plate 1 of an electronic component holder as shown in FIGS. An adhesive layer 10 to be bonded, an adhesive layer 11 that is opposed to the adhesive layer 10 and detachably holds a flexible substrate (electronic component) (not shown) on the weakly adhesive surface 12 of the surface, and the adhesive layer 10 and the adhesive layer The reinforcing layer 13 interposed between the layers 11 is provided in a three-layer structure, and is formed to a thickness of 0.01 to 1 mm.

  As shown in FIGS. 2 and 3, the base plate 1 of the electronic component holder is formed in a substantially rectangular plane using a hard material, and is an adhesive region for bonding the electronic component holder sheet to a flat surface. 2 are arranged in the X and Y directions, and through the inside and outside of each bonding region 2, there are through holes 4 having substantially rectangular planes that avoid contact with the alignment holes 3 for removing the flexible substrate and the exposed terminal portions of the flexible substrate, respectively. Multiple punches are made. Positioning holes 5 for the positioning jig 30 are respectively drilled in the corners of the three sides of the base plate 1.

  The adhesive layer 10, the adhesive layer 11, and the reinforcing layer 13 are preferably formed in substantially the same size. As shown in FIG. 1, the adhesive layer 10 is formed into a sheet shape corresponding to the shape of the adhesive region 2 using, for example, a B-stage epoxy resin or uncured silicone that can maintain the shape of the sheet. , 50 μm or less, preferably 10 to 50 μm in thickness, and a plurality of alignment holes 3A communicating with the alignment holes 3 of the base plate 1 are drilled.

  As shown in FIG. 1, the adhesive layer 11 is formed into a sheet shape corresponding to the shape of the adhesion region 2 using, for example, silicone, fluorine rubber, acrylic, polyimide silicone, urethane rubber, and the like. A plurality of alignment holes 3 </ b> B corresponding to the communication 3 are perforated, and the surface is mirror-finished to form a weakly adhesive surface 12 having weak adhesiveness.

  The adhesive layer 11 is made of silicone, fluorine rubber, or polyimide silicone, which is excellent in heat resistance, when used in applications where heat acts strongly, for example, reflow applications. The pressure-sensitive adhesive layer 11 has a thickness of 0.01 to 1 mm, preferably 0.05 to 0.5 mm. However, when the thickness is less than 0.01 mm, it does not function. This is because the flatness is lacking, and there is a possibility of causing a positional shift when the flexible substrate is mounted.

  As shown in FIG. 1, the reinforcing layer 13 is formed into a sheet shape corresponding to the shape of the adhesive region 2 using, for example, a resin film, a metal thin film, a film made of resin or metal, a glass cloth, and the like. From the viewpoints of performance and workability, the thickness is 100 μm or less, preferably 50 μm or less, and a plurality of alignment holes corresponding to the alignment holes 3 of the base plate 1 are drilled. When this reinforcing layer 13 is used for a reflow application in which heat acts strongly, a polyimide film having excellent heat resistance is optimal as a material.

  In the above, when manufacturing an electronic component holder, first, a plurality of sheets for electronic component holders are arranged on the sheet-like protective film 20, and each electronic component holder is used so that the protective film 20 functions as a carrier. While the peripheral edge of the sheet is half-cut, positioning holes 21 are formed in the three corners of the protective film 20. The protective film 20 can be appropriately subjected to a release treatment in order to improve transferability.

  When half-cutting the electronic component holder sheet, it is preferable to use a Thomson blade, an engraving blade, a punching blade made of a pinnacle blade, a laser, a water jet, a movable blade, or the like. At this time, if a plotting cutter, a laser, or the like using CAD data is employed, the cutting blade, the movable blade, and related devices can be omitted, or rapid mass production can be performed.

  In parallel with the above operation, the base plate 1 is positioned and set on the flat positioning jig 30 by inserting the positioning holes 5 of the base plate 1 into the plurality of positioning pins 31 of the positioning jig 30 (see FIG. 5). . As shown in FIGS. 6 and 7, the positioning jig 30 is formed in a substantially rectangular plane smaller than the protective film 20, and the base plate 1 and the positioning holes 5 and 21 of the protective film 20 are formed at the three corners. Positioning pins 31 to be inserted are provided so as to project, and notches 32 for the operator to hold are formed on both sides.

  After positioning the base plate 1 on the positioning jig 30, the positioning holes 21 of the protective film 20 that are upside down are respectively inserted into the plurality of positioning pins 31 of the positioning jig 30 so that the protective film 20 is placed on the base plate 1 with high accuracy. The electronic component holder sheet adhesive layer 10 is laminated on each of the plurality of adhesive regions 2 of the base plate 1. Then, after pressure is applied to the protective film 20 to transfer the electronic component holder sheet to the plurality of adhesive regions 2 of the base plate 1 and the unnecessary protective film 20 is removed using the half-cut portion, FIG. The electronic component holder shown can be manufactured.

  According to the above configuration, since the electronic component holder sheet functions as a double-sided tape, a separate electronic component holder sheet can be attached to the base plate 1 later and used freely. As a result, it is possible to easily satisfy the demands of workers and users. Moreover, since heat resistance can be imparted to the adhesive layer 10, the pressure-sensitive adhesive layer 11, and the reinforcing layer 13, even when used for reflow where heat acts strongly, it should be used several hundred times without being replaced. Therefore, workability and convenience can be remarkably improved.

Next, FIG. 8 shows a second embodiment of the present invention. In this case, the sheet for an electronic component holder is not a three-layer structure but a single-layer structure composed of the adhesive layer 11, and this adhesive layer 11. This surface is a weakly adhesive surface 12 that detachably holds the flexible substrate.
For the pressure-sensitive adhesive layer 11 that functions as a substitute for the adhesive layer 10, silicone having excellent heat resistance or general acrylic is used. Among these, it is preferable to use a silicone adhesive such as a condensation curable type or a hydrosilylation reaction curable type. Since other parts are the same as those in the above embodiment, the description thereof is omitted.

  In this embodiment, the same effect as that of the above embodiment can be expected, and the adhesive layer 10 and the reinforcing layer 13 can be omitted. Therefore, the material can be reduced, the configuration can be simplified, and the manufacturing can be facilitated. It is clear that we can expect.

  In the above embodiment, the electronic component holder sheet is transferred to the surface of the base plate 1, but the invention is not limited to this. For example, when a reinforcing plate or a connector is provided on the flexible substrate, an electronic component holder sheet is individually provided on the bottom surface of the concave portion made of a counterbore rather than the surface of the base plate 1 so as to satisfy the operator's request. Anyway. Further, the positioning holes 5 and 21 may be drilled at the four corners. Furthermore, you may abbreviate | omit the reinforcement layer 13 as needed.

It is a section explanatory view showing an embodiment of a sheet for electronic parts holders concerning the present invention. It is plane explanatory drawing which shows the electronic component holder in embodiment of the sheet | seat for electronic component holders which concerns on this invention. It is plane explanatory drawing which shows the base board in embodiment of the sheet | seat for electronic component holders which concerns on this invention. It is a plane explanatory view showing the state where the sheet for electronic component holders was arranged and stuck on the protective film in the embodiment of the sheet for electronic component holders according to the present invention. It is explanatory drawing which shows the state which laminates | stacks a protective film on the positioning jig in embodiment of the sheet | seat for electronic component holders which concerns on this invention, and positions a protective film on a base board. It is plane explanatory drawing which shows the positioning jig in embodiment of the sheet | seat for electronic component holders which concerns on this invention. It is side surface explanatory drawing which shows the positioning jig of FIG. It is a section explanatory view showing a 2nd embodiment of a sheet for electronic parts holder concerning the present invention.

Explanation of symbols

1 Base plate 2 Bonding area (surface)
4 Through hole (concave)
DESCRIPTION OF SYMBOLS 10 Adhesive layer 11 Adhesive layer 12 Weak adhesive surface 13 Reinforcing layer 20 Reinforcing film 30 Positioning jig

Claims (5)

  An electronic component holder sheet comprising: an adhesive layer provided on a hard base plate; and an adhesive layer provided on the adhesive layer and detachably adhesively holding an electronic component on a weak adhesive surface.   The electronic component holder sheet according to claim 1, further comprising a reinforcing layer interposed between the adhesive layer and the adhesive layer.   The electronic component holder sheet according to claim 1 or 2, wherein an adhesive layer is bonded to at least one of the surface of the base plate and the recess.   The sheet for electronic component holders according to claim 2 or 3, wherein heat resistance is imparted to the adhesive layer, the pressure-sensitive adhesive layer, and / or the reinforcing layer. An electronic component holder sheet, wherein at least one of both surfaces of the adhesive layer is a weakly adhesive surface that detachably holds an electronic component.

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