JP2016137634A - Resin-sealing method and resin-sealing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a failure when performing resin-sealing molding due to variation of thickness T in each substrate to be supplied to a resin-sealing mold.SOLUTION: A resin-sealing method includes: preparing one substrate 19 having a size (width) capable of covering a resin supply part 23 of a lower mold 18, two resin path parts 28, two resin molding parts 29 and the mold surface of the lower mold 18 in the external periphery of the resin molding part 29; directing downward two groups of components 19a to be sealed mounted on the substrate 19 and setting the substrate 19 to a substrate setting part 13a of an upper mold 13; housing two groups of the components 19a to be sealed on the substrate 19 in the two resin molding parts 29 provided to the lower mold 18, respectively, in mold clamping of the upper and lower molds 13 and 18; and sealing the component 19a to be sealed on the substrate 19 in each resin molding part 29 in a resin package comprising a solidified resin by solidifying a fluid resin in each resin molding part 29 while maintaining a mold clamping state.SELECTED DRAWING: Figure 1

Description

The present invention relates to a resin sealing method and a resin sealing apparatus for resin-sealing a sealed component such as an electronic component mounted on a substrate.
More specifically, the present invention relates to an improvement to efficiently prevent the occurrence of defects such as molding defects due to the different thicknesses of the substrates supplied to the resin-sealed mold.

Regarding a resin sealing method and a resin sealing device for supplying two substrates to a resin sealing mold and simultaneously performing resin sealing on the components to be sealed on each substrate for high efficiency production Widely known.
For example, as schematically shown in FIG. 5, the resin sealing mold 1 installed in the resin sealing device is composed of an upper mold 1 a and a lower mold 1 b that are arranged vertically.
Then, a cull block 2 in which a cull 2a is formed is provided at the center position of the upper mold 1a, and a substrate set block provided with a substrate setting portion 4a for setting the substrate 3 at both side positions adjacent to the cull block. 4 is arranged.
A pot block 5 is provided at the position of the lower mold 1b corresponding to the upper mold block 2 and a cavity 6a (resin molding part) is positioned at the position of the lower mold 1b corresponding to the upper substrate set block 4. A cavity block 6 provided with is provided.
The lower pot block 5 is provided with a pot 5a (resin supply section) for supplying the resin material 7, and the resin material 7 heated and melted in the pot is added to the pot 5a. A plunger 8 (resin pressing member) for pressing is fitted.
Furthermore, when the upper and lower molds 1a and 1b shown in FIG. 5 (2) are clamped to the pot block 5 and the cavity block 6, the molten resin 7a heated and melted in the pot 5a is transferred into the cavity 6a. Gates 5b and 6b (resin passage portions) are provided.

In order to simultaneously resin-sealing the parts to be sealed 3a on the two substrates 3 using the resin-sealing mold 1, first, when the upper and lower molds 1a and 1b shown in FIG. A release film 9 is stretched on the mold surface of the lower mold 1b, and the resin material 7 is supplied into the pot 5a of the lower mold 1b via the release film 9, and two substrates 3 are Each set is supplied and set to the substrate setting section 4a in the substrate setting block 4 of the mold.
At this time, the part to be sealed 3a on the substrate 3 is set in a downward posture.

  Next, as shown in FIG. 5 (2), the upper and lower molds 1a and 1b are clamped, and the part 3a to be sealed on the substrate 3 is inserted into the cavity 6a of the lower mold 1b through the release film 9. Each is fitted.

Next, a clamping pressure by both upper and lower molds 1a and 1b is applied to each substrate 3, and in this state, the molten resin 7a heated and melted in the pot 5a is pressurized by the plunger 8 to gate the molten resin. It inject | pours in each cavity 6a through 5b * 6b.
The molten resin 7a is solidified by receiving a heating action by the upper and lower molds 1a and 1b and a predetermined resin pressure by the plunger 8 to form a solidified resin (not shown). The sealed component 3a set in each cavity 6a is sealed in a resin package made of a solidified resin that is molded corresponding to the shape of the cavity 6a, and between the pot 5a and each cavity 6a. A solidified resin that is unnecessary as a product is formed in the resin passage portion configured as described above, that is, in the space portion constituted by the cull 2a and the gates 5b and 6b.

By the way, the thicknesses T1 and T2 of the two substrates 3 supplied between the upper and lower molds 1a and 1b may be different from each other. In this state, when the upper and lower molds are clamped, a high clamping pressure is applied to the thicker substrate (thickness T1), and conversely, it is lower to the thinner substrate (thickness T2). Clamping pressure is applied.
Therefore, the mold clamping pressure for each substrate 3 varies, and the so-called balance per mold deteriorates. Then, in a state where there is such a variation in the mold clamping pressure with respect to each substrate 3, if the molten resin 7a in the pot 5a is pressure-injected into each cavity 6a through the gates 5b and 6b, for example, the mold clamping pressure is insufficient. A part of the molten resin 7a leaks from the upper and lower mold surface parts to form a resin burr, or a part of the substrate that receives excessive mold clamping pressure is damaged, resulting in defective molding. There are harmful effects such as.

Further, the part to be sealed 3a on the substrate 3 is fitted into the cavity 6a of the lower mold 1b through the release film 9, and the surface (bottom in the figure) of the part to be sealed is the release film 9. By setting the pressure-contacted state to the bottom surface of the cavity via the surface, the surface of the part to be sealed 3a can be molded so as to be exposed to the outside from the resin package molded corresponding to the shape of the cavity. .
However, the part 3a to be sealed on the substrate having the thinner substrate 3 (thickness T2) cannot be set in a state of being pressed against the bottom surface of the cavity 6a via the release film 9 (FIG. 5). (Refer to (2)), there is a problem that the surface of the part to be sealed cannot be formed in a state of being exposed to the outside of the resin package.

  Further, when the two substrates 3 are separately supplied and set to the substrate setting portion 4a in each upper substrate set block 4, the molten resin 7a in the pot 5a is added into each cavity 6a through the gates 5b and 6b. When the pressure is injected and a predetermined resin pressure is applied to the molten resin 7a, a part of the molten resin 7a enters the end surface 3b on the calblock 2 side of each substrate 3 to form a resin burr. There is a problem that the quality of the resin-sealed substrate is lowered.

Further, there has been proposed a structure in which two substrates are set by being supplied to an upper mold in a state where end surfaces of the substrates are bonded (see Patent Document 1).
In this case, similar to the above, the parts to be sealed on the two substrates can be sealed and formed almost simultaneously.

However, in the one described in Patent Document 1, it is necessary that the thicknesses of the two substrates to be supplied and set to the upper mold are equal.
Therefore, when the thicknesses of the two substrates are different from each other, there is a problem that efficient resin sealing cannot be expected.
Further, when the thicknesses of the two substrates are different from each other, a mold clamping pressure adjusting means (floating type structure, etc.) for individually absorbing the variation in the thickness of each substrate must be employed. There is a problem that the mold structure of the sealing mold becomes complicated and large, and the overall manufacturing cost of the resin sealing mold and the resin sealing apparatus increases.

JP 2007-307766 A (refer to paragraph [0013], paragraph [0026], paragraph [0046] and FIG. 3, FIG. 5, FIG. 6, etc.)

  The present invention can solve the problems in resin sealing molding due to the variation in the thickness of each substrate supplied to the resin sealing mold, and is provided in accordance with the variation in the thickness of each substrate. An object of the present invention is to provide a resin sealing method capable of eliminating the mold clamping pressure adjusting means and a resin sealing device for carrying out this method.

  In order to solve the above-described problems, a resin sealing method according to the present invention includes a resin sealing mold in which at least an upper mold and a lower mold are opposed to each other, and has a resin supply section. Injected into the resin molding part through the resin passage part, solidifies the fluid resin in the resin molding part to form a solidified resin, molds a resin package made of the solidified resin, and supplies it to the resin molded part on one substrate A resin sealing method for sealing a sealed part in a resin package, wherein a resin supply part is disposed at a central position in the lower mold, and a resin supply part is provided at a position adjacent to the resin supply part. A step of preparing a lower mold in which at least two resin molding portions are arranged through at least two resin passage portions that are connected to each other, and one piece in a posture in which a part to be sealed on a single board faces downward Substrate The part to be sealed on one board set in the board setting part is set to match the position corresponding to the arrangement position of at least two resin molding parts. A size capable of covering the step of preparing the upper mold, the resin supply section, the at least two resin passage sections, the at least two resin molding sections, and the lower mold surface surrounding the resin molding section; A step of preparing a single substrate, a substrate carrying-in step of carrying a single substrate between the upper mold and the lower mold, and an upper mold substrate in a posture in which a part to be sealed faces downward After the substrate setting step for setting in the setting portion, the resin supply step for supplying the resin material into the resin supply portion, the substrate setting step and the resin supply step, the upper mold surface and the lower mold surface are closed together The upper mold and the lower mold are clamped, and the parts to be sealed are stored in each resin molding part. And a mold clamping maintaining process for maintaining the state where the upper mold and the lower mold are clamped. In the mold clamping maintaining process, the flowable resin generated from the resin material in the resin supply unit is resin path The resin molded part is injected into the resin molded part, and the fluid resin in the resin molded part is solidified to seal the sealed component in the resin package.

  Further, the resin sealing method according to the present invention includes a release film stretching step of stretching the release film on the lower mold surface before the resin supply step in the resin sealing method described above. Features.

  Further, the resin sealing method according to the present invention includes a release film tensioning step of tensioning the release film on the lower mold surface before the resin supply step in the resin sealing method described above, In the tightening step, the exposed surface of the part to be sealed separately accommodated in each resin molding part is pressed against the release film stretched in each resin molding part.

  In order to solve the above-described problem, a resin sealing device according to the present invention includes at least a resin sealing mold in which an upper mold and a lower mold are opposed to each other, a resin supply unit provided in the lower mold, and a lower mold. And a resin passage portion through which the flowable resin flows in the resin supply portion. The flowable resin in the resin supply portion is injected into the resin formation portion through the resin passage portion. This is a resin sealing device for forming a resin package made of a solidified resin by solidifying a flowable resin, and sealing a part to be sealed on a single substrate set in a resin molding part in the resin package. A resin supply portion disposed at a central position in the lower mold, at least two resin passage portions disposed in communication with the resin supply portion at positions adjacent to the resin supply portion, and at least two resin passages. Are arranged through each part When at least two resin molding parts and a board setting part provided on the upper mold are provided, and one board is set with the attitude where the part to be sealed faces downward with respect to the board setting part, the part to be sealed Matches the position corresponding to the arrangement position of at least two resin molding parts in the lower mold, and the lower mold around the outside of the resin supply part, at least two resin passage parts, at least two resin molding parts, and the resin molding part The mold surface is set so that a single substrate can be covered, and in a state where the upper die and the lower die are clamped, each sealed component on the single substrate is placed in each resin molding part. A single substrate that is stored in the resin supply portion, the fluid resin in the resin supply portion is injected into the resin molding portion through the resin passage portion, and the fluid resin in the resin molding portion is solidified and set in the resin molding portion. The upper part to be sealed is formed in the resin molding part. Characterized in that it is sealed in the resin package being.

  The resin sealing device according to the present invention is characterized in that in the above-described resin sealing device, a release film tensioning mechanism for tensioning the release film on the lower mold surface is provided.

  The resin sealing device according to the present invention includes a release film tensioning mechanism for tensioning a release film on a lower mold surface in the above-described resin sealing device, and includes an upper mold and a lower mold. In a state where the mold is clamped, the release film stretched by the release film stretching mechanism and the exposed surface of the part to be sealed are pressed against each other.

  According to the present invention, at the time of clamping the upper and lower molds, it is possible to arrange a single substrate so as to cover the entire mold surface of the lower mold (lower mold main body) provided with at least two resin molding portions. it can. When such a single substrate is used, the substrate thickness does not vary. For this reason, the mold clamping pressure by the resin-sealed mold can be uniformly applied to one substrate, so that the balance per mold is good. Therefore, it is possible to efficiently and reliably prevent molding defects caused by the balance failure per die.

  Further, according to the present invention, the conventional mold clamping pressure adjusting means provided in correspondence with the variation in the thickness of the two substrates supplied between the upper and lower molds becomes unnecessary. Therefore, it is possible to simply omit the resin-sealed mold structure, and the overall manufacturing cost of the resin-sealed mold and the resin sealing apparatus can be reduced.

It is the partially cutaway front view which shows the principal part of the resin sealing apparatus which concerns on this invention, and shows the state which conveyed the board | substrate, the resin material, and the release film to the resin sealing mold part. The main part of the resin sealing device corresponding to FIG. 1 is shown, FIG. 2 (1) is a partially cutaway front view of the resin sealing mold part when the mold is opened, and FIG. 2 (2) is its lower mold part. FIG. 2 shows a resin-sealed mold portion corresponding to FIG. 2. FIG. 3 (1) is a partially cutaway front view at the time of clamping, FIG. 3 (2) is a partially cutaway front view showing a molded product, FIG. (3) is a plan view of the molded product, and FIG. 3 (4) is a bottom view of the molded product. 4 (1) to 4 (6) are explanatory diagrams of the steps of the method of the present invention. FIG. 5 (1) is a partially cutaway front view when the resin-sealed mold part is opened, and FIG. 5 (2) is a partially cutaway front view when the mold is clamped. .

  Hereinafter, the present invention will be described based on the embodiment diagrams shown in FIGS.

  First, based on FIG. 1, the outline | summary of the resin sealing apparatus 10 which concerns on this invention is demonstrated.

The resin sealing device 10 can be moved up and down by an upper die 13 fixed to the lower surface of the fixed platen 12 via an upper die base 11 and a vertical drive mechanism 15 disposed on the base 14 of the resin sealing device. And a lower die 18 installed on the upper surface of the movable plate 16 via a lower die base 17.
In addition, the mold surface (lower surface) of the upper mold 13 and the mold surface (upper surface) of the lower mold 18 are disposed so as to face each other vertically. Both the upper and lower molds 13 and 18 constitute a resin-sealed mold. Yes.
The vertical drive mechanism 15 moves the movable plate 16, the lower mold base 17 and the lower mold 18 up and down to open the mold between the upper and lower molds 13 and 18 (see FIG. 1). In addition, it is provided so that mold clamping (see FIG. 3 (1)) for closing the mold surfaces of the upper and lower molds 13 and 18 can be performed. Therefore, the vertical drive mechanism 15 constitutes a mold opening / closing mechanism.

In addition, the board setting portion 13a on the mold surface of the upper mold 13 has a board locking mechanism for locking the board 19 on which a plurality of parts to be sealed 19a are mounted in a posture in which the parts to be sealed 19a face downward. 20 are provided. A seal member 21 for sealing a predetermined range of the upper and lower molds 13 and 18 is disposed at the mold surface position of the upper mold 13 that is the outer periphery of the substrate locking mechanism 20.
Reference numeral 20a in the figure denotes an air intake hole provided in communication with a substrate suction mechanism (not shown) for adsorbing the substrate 19 to the mold surface of the upper mold 13.

  The substrate 19 is a single large substrate as if it were formed by combining two substrates of the size currently used (for example, a rectangular substrate having a size of about 100 mm × 300 mm). It is formed as a shaped substrate.

The lower mold 18 includes a lower mold body 22 provided on the lower mold base 17, a resin supply portion (pot) 23 that is disposed at the center of the lower mold body 22 and is supplied with the resin material R, A resin pressure member (plunger) 24 fitted in a slidable state with respect to the resin supply unit 23, and a vertical drive mechanism 25 provided with the resin pressure member 24 so as to be vertically movable are provided. .
Further, the release film 26 is adsorbed to the mold surface of the lower mold 18 (the upper surface of the lower mold body 22) by sucking air in the resin supply section 23 from the gap between the resin supply section 23 and the resin pressure member 24. A decompression mechanism 27 (see FIG. 1) is provided.
When the upper and lower molds 13 and 18 are clamped, the resin pressure member 24 is moved up via the vertical drive mechanism 25 to heat and melt the resin material (shown in FIG. 3). The molten resin R1) thus made can be pressurized. Therefore, the vertical drive mechanism 25 constitutes a resin pressurizing mechanism.
Further, the release film 26 is carried into the mold surface position of the lower mold 18 (lower mold main body 22) by a release film stretching mechanism (not shown), and is coated on the mold surface of the lower mold 18.

In addition, a plurality (two in the example) of resin respectively communicated with the target positions on both sides of the resin supply part 23 in the lower mold body 22 through the resin passage part 28 (in the example in the figure). A molding part (cavity) 29 is provided. The plurality of parts to be sealed 19a are divided into groups equal to the two resin molding portions 29 (two in the illustrated example). The resin passage portion 28 may have an extended flow path (runner).
Further, each resin molding portion 29 is locked to the substrate set portion 13a of the upper die 13 via the substrate locking mechanism 20 when the upper and lower molds 13 and 18 are clamped (see FIG. 3 (1)). Each of the resin sealing portions 19b (see FIG. 2) at both side positions of the substrate 19 is provided so as to be fitted and set.
As shown in FIG. 2 (2), the resin supply section 23 is provided in a rectangular shape in plan view. And the shape of each resin molding part 29 arrange | positioned in the object position used as the both sides of this resin supply part 23 is also provided in the rectangular shape by planar view.

Further, as shown in FIG. 1, a position on the lower mold base 17 facing the seal member 21 disposed on the upper mold 13 is cooperated with the seal member 21 when the upper and lower molds 13 and 18 are clamped. A seal member 30 is provided for working and sealing the outer periphery of the upper and lower molds.
The pressure reducing mechanism 27 is provided so that the air within the range sealed by the seal members 21 and 30 (seal range) can be positively discharged out of the seal range.

Further, when the upper and lower molds 13 and 18 shown in FIG. 1 are opened, the substrate 19 and the resin material R loading mechanism 31 can be moved to a predetermined position between the upper and lower molds 13 and 18, respectively. The substrate 19 on the mechanism 31 is provided so as to be locked to the substrate set portion 13a of the upper mold 13 through the substrate locking mechanism 20 and the substrate suction mechanism (intake hole 20a).
Further, a carry-in mechanism 31 is provided so that the resin material R on the carry-in mechanism 31 can be supplied into the resin supply portion 23 of the lower mold 18.

  In addition, the resin material R supplied to the resin supply part 23 of the lower mold | type 18 has illustrated the case where it is solid resin, such as tablet-like resin and sheet-like resin which are smaller than this resin supply part 23. Instead of such a solid resin, an arbitrary one can be used. For example, a solid resin such as a granular resin, a fine particle resin, and a powder resin, a jelly resin, a gel resin, and a liquid resin (a resin that is liquid at normal temperature) can be used. If necessary, a preheated tablet-like resin or the like may be used.

  Hereinafter, a case where the resin-sealed parts 19a on the substrate 19 are collectively resin-sealed using the resin-sealing device 10 will be described.

  First, the preparation process of the upper mold 13 and the preparation process of the lower mold 18 constituting the resin sealing mold in the resin sealing apparatus 10 are performed, and the preparation process of the substrate 19 is performed.

A resin supply unit 23 is disposed at the center position of the lower mold 18. At a position adjacent to the resin supply part 23, at least two resin molding parts 29 are disposed via a resin passage part 28 connected to the resin supply part 23 in communication.
Further, the upper mold 13 is provided with a substrate setting portion 13a for setting the sealed component 19a on the substrate 19 in a downward orientation. The part to be sealed 19a on the substrate 19 supplied and set to the substrate setting part 13a is set so as to coincide with a position corresponding to the arrangement position of at least two resin molding parts 29 in the lower mold 18.
Further, the size (width) of the substrate 19 is such that the resin supply part 23 and the resin passage part 28 of the lower mold 18, the at least two resin molding parts 29, and the lower mold 18 (lower The mold body 22) is set so as to cover the mold surface. The substrate 19 has a uniform thickness T and is formed as a single substrate. In the present application document, the phrase “the thickness T of the substrate 19 is equal” means that the resin burrs are formed on the resin-sealed substrate, which will be described later, This means that the variation in the thickness T of the single substrate 19 is small enough that no adverse effects such as breakage of 19 occur.

  Next, a substrate carrying-in process and a resin carrying-in process for carrying the prepared substrate 19 and the resin material R between the upper and lower molds 13 and 18 through the carrying-in mechanism 31 (see FIGS. 1 and 4 (1)). .

Next, a substrate setting step is performed in which the substrate 19 carried in the substrate carrying-in step is supplied and set to the substrate setting portion 13a of the upper mold 13 with the sealed component 19a facing downward.
In this substrate setting step, the substrate 19 can be locked in a predetermined posture via the substrate locking mechanism 20. In addition, by sucking the substrate 19 from the suction hole 20a via a substrate suction mechanism (not shown), the substrate 19 can be more reliably sucked and supported by the substrate set portion 13a of the upper mold 13. (See Figure 4 (2)).

Further, a resin supply process is performed in which the resin material R carried in the resin carry-in process is supplied into the resin supply unit 23 of the lower mold 18.
When the resin material R is introduced into the resin supply unit 23, the resin material is supplied so as to be placed on the upper surface of the resin pressure member 24.

  In addition, before performing the resin supply process, by performing a release film tensioning process for tensioning the release film 26 on the mold surface of the lower mold 18 (lower mold body 22), the resin material R is removed from the mold release film. 26 can be supplied into the resin supply section 23 (see FIGS. 2 (1) and 4 (2)).

After the substrate setting process and the resin supply process, a mold clamping process is performed in which the upper and lower molds 13 and 18 are closed and the upper and lower molds 13 and 18 are clamped.
The substrate 19 is set in the substrate setting step so that each sealed component 19a on the substrate 19 is individually accommodated in each resin molding portion 29 in the lower die 18 during the mold clamping step (FIG. 4). (See (3)).

Next, a resin sealing process is performed as shown in FIGS. 3 (1) and 4 (4) while maintaining the mold clamping state (mold clamping maintaining process). First, the resin material R supplied into the resin supply unit 23 is heated and melted to generate a molten resin (flowable resin) R1. Next, the molten resin R1 is pressurized by the resin pressure member 24. As a result, a resin sealing step is performed in which the molten resin R1 is injected into each resin molded portion 29 through the resin passage portion 28 and the molten resin R1 in each resin molded portion 29 is pressurized with a predetermined resin pressure.
The molten resin R1 injected into each resin molding part 29 is solidified by being heated while receiving a predetermined resin pressure, and a resin package R2 made of a solidified resin is formed on both resin sealing portions 19b of the substrate 19. Molded. Then, the parts to be sealed 19a on the substrate 19 supplied and set in each resin molding part 29 are respectively sealed in the resin package R2 to form a resin-sealed substrate 191 which is a molded product (FIG. See 3 (2)).

Next, after the required time elapses, a mold opening process for both the upper and lower molds 13 and 18 is performed to move the upper and lower molds 13 and 18 to their original positions (see FIG. 1).
In the example drawing, since the release film 26 is stretched on the mold surface of the lower mold 18, the resin-sealed substrate 191 can be easily released from the mold surface of the lower mold 18 (lower mold body 22). Is done. Mold opening is performed in a state where the resin-sealed substrate 191 is locked to the substrate setting portion 13a of the upper die 13 (see FIG. 4 (5)).

  Next, the locked state to the resin-sealed substrate 191 by the substrate locking mechanism 20 and the substrate suction mechanism is released, and the resin-sealed substrate 191 is taken out between the upper and lower molds 13 and 18, and the unloading mechanism ( (Not shown) can be carried out to the outside.

In addition, before the resin supply process, a process of stretching the release film 26 on the mold surface of the lower mold 18 (lower mold body 22) is performed. Thereafter, during the mold clamping process, the exposed surface 19c (for example, a portion serving as a heat radiating surface of the sealed component 19a accommodated in each resin molding portion 29 of the lower mold 18 is shown in FIGS. 4 (6) can be set so that the lower surface) and the release film 26 stretched in each resin molding portion 29 are pressed.
Therefore, by performing the resin sealing step in this state, it is possible to prevent the resin from adhering to the exposed surface 19c of the part to be sealed.

  Further, as shown in FIG. 4 (6), the resin-sealed substrate 191 is molded corresponding to the shape of each resin molding portion 29, and the entire part to be sealed 19a excluding the exposed surface 19c is formed. Each resin package R2 to be sealed and an unnecessary resin R3 molded corresponding to the shape of the resin passage portion 28 are bonded and integrated between the resin packages R2.

According to this embodiment, when the upper and lower molds 13 and 18 are clamped, one substrate 19 having a size corresponding to two substrates, for example, a size of about 100 mm × 300 mm currently used. Covers the entire mold surface of the lower mold 18 (lower mold body 22) provided with at least two resin molding portions 29, with a size (wideness) substrate formed by forming two rectangular substrates as a set. Can be arranged in this way.
Since such a single substrate 19 has no variation in its substrate thickness T, it is possible to apply the clamping pressure by the resin-sealed mold evenly and simultaneously, so that the balance per mold is good. Become.
Therefore, it is possible to efficiently and surely prevent molding defects caused by a balance failure per die, and to achieve high-efficiency production.
In addition, the conventional mold clamping pressure adjusting means provided in correspondence with the variation in the thickness of the two substrates supplied between the upper and lower molds is not required, so that the resin-sealed mold structure can be simply omitted. Therefore, the overall manufacturing cost of the resin sealing mold and the resin sealing device can be reduced.

  In the embodiment, a case where an exposed surface 19c to which resin does not adhere is provided on the sealed component 19a in the resin-sealed substrate 191 is illustrated. When it is not necessary to provide the exposed surface 19c, for example, when resin sealing is performed so that the entire part to be sealed 19a is covered with the solidified resin, the surface (bottom surface) of the part to be sealed 19a and the resin molding portion 29 are provided. What is necessary is just to set so that a required clearance may be provided between the release film 26 stretched inside.

  In the embodiment, the case where two resin passage portions 28 and two resin molding portions 29 are provided is illustrated. N resin passage portions 28 and resin molding portions 29 may be provided (N is an integer satisfying N ≧ 3). In this case, the plurality of parts to be sealed 19a are divided into N groups.

  In the embodiment, the case where the release film 26 is used is illustrated. However, when using a resin material or a mold structure having an excellent release function or a mold material, the release film is not necessarily used. May not be used.

  Further, any material can be used for the substrate 19. For example, a metal lead frame, a printed circuit board having a base material made of plastic, ceramic, glass, metal, or other material can be used.

  In addition, as the sealed component 19a to be mounted on the substrate 19, for example, an electronic element such as a semiconductor chip including an IC (Integrated Circuit) chip, an LED (Light Emitting Diode) chip, and other electric / electronic components, etc. Can be used.

  Moreover, as the resin material R, arbitrary things can be used. Tablet resin, granular resin, fine particle resin, powder resin, sheet resin, jelly resin, gel resin, liquid resin, and the like can be appropriately employed based on ease of handling. When a liquid resin is used, the liquid resin itself corresponds to a fluid resin. Furthermore, you may make it use the preheated tablet-shaped resin as needed.

  The present invention is not limited to the above-described embodiments, and can be arbitrarily changed and selected as necessary without departing from the spirit of the present invention.

10 Resin sealing device
11 Upper mold base
12 Fixed platen
13 Upper mold
13a Board setting part
14 base
15 Vertical drive mechanism
16 Movable platen
17 Lower mold base
18 Lower mold
19 Board
19a Sealed parts
19b Resin sealing part
19c Exposed surface
20 Board locking mechanism
20a Air intake hole
21 Seal material
22 Lower mold body
23 Resin supply section
24 Resin pressure member
25 Vertical drive mechanism
26 Release film
27 Pressure reduction mechanism
28 Resin passage
29 Resin molding part
30 Seal material
31 Loading mechanism R Resin material R1 Molten resin (flowable resin)
R2 Resin package R3 Unnecessary resin T Substrate thickness

Claims (6)

At least a resin-sealed mold in which an upper mold and a lower mold are opposed to each other has a resin supply part, and a flowable resin in the resin supply part is injected into the resin molded part through the resin passage part, and the flow in the resin molded part Forming a solidified resin by solidifying the resin, forming a resin package made of the solidified resin, and sealing a part to be sealed on a single substrate supplied and set in the resin molding portion in the resin package A resin sealing method,
The resin supply part is disposed at a central position in the lower mold, and at least two of the resin passage parts are connected to the resin supply part at positions adjacent to the resin supply part, respectively. A step of preparing the lower mold in which a resin molded portion is disposed;
A substrate set portion on which the one substrate is set in a posture in which a part to be sealed on the one substrate faces downward is disposed on the upper mold, and the one piece set on the substrate set portion A step of preparing the upper mold set so that a part to be sealed on the substrate matches a position corresponding to an arrangement position of the at least two resin molding parts;
The one sheet having a size capable of covering the resin supply portion, the at least two resin passage portions, the at least two resin molding portions, and a lower mold surface surrounding the resin molding portion. Preparing a substrate;
A substrate loading step of loading the one substrate between the upper mold and the lower mold;
A substrate setting step of setting the single substrate on the upper mold substrate setting portion in a posture in which the part to be sealed faces downward;
A resin supply step of supplying a resin material into the resin supply unit;
After the substrate setting step and the resin supplying step, the upper mold surface and the lower mold surface are closed to clamp the upper mold and the lower mold, and the sealed component is A mold clamping process to be accommodated in each resin molded part;
A mold clamping maintaining step for maintaining the clamped state of the upper mold and the lower mold,
In the mold clamping maintaining step, the fluid resin generated from the resin material in the resin supply unit is injected into the resin molding unit through the resin passage unit, and the fluid resin in the resin molding unit is solidified. A resin sealing method, wherein the sealed component is sealed in the resin package.   2. The resin sealing method according to claim 1, further comprising a release film extending step of extending a release film on the lower mold surface before the resin supplying step. Before the resin supply step, a release film tensioning step of tensioning a release film on the lower mold surface,
2. In the mold clamping step, the exposed surface of the sealed part housed separately in each resin molding part and the release film stretched in each resin molding part are pressed against each other. The resin sealing method described in 1. A resin-sealed mold having at least an upper mold and a lower mold, a resin supply section provided in the lower mold, a resin molding section provided in the lower mold, and a fluid resin in the resin supply section A fluid resin passage portion, and the fluid resin in the resin supply portion is injected into the resin molding portion through the resin passage portion, and the fluid resin in the resin molding portion is solidified to be a solidified resin. A resin sealing device for molding a resin package and sealing a sealed component on a single substrate set in the resin molding portion in the resin package,
The resin supply section disposed at a central position in the lower mold;
At least two resin passage portions disposed in communication with the resin supply portion at positions adjacent to the resin supply portion;
At least two of the resin molding portions respectively disposed through the at least two resin passage portions;
A substrate set part provided in the upper mold,
When the one substrate is set with respect to the substrate setting portion in a posture in which the sealed component is facing downward, the sealed component corresponds to an arrangement position of at least two resin molding portions in the lower mold. And the one substrate includes the resin supply portion, the at least two resin passage portions, the at least two resin molding portions, and the mold surface of the lower mold in the outer periphery of the resin molding portion. Set to cover,
In a state where the upper mold and the lower mold are clamped, each sealed component on the one substrate is individually accommodated in each resin molding section, and the fluid resin in the resin supply section is The sealed component on the one substrate set in the resin molded portion is injected into the resin molded portion through the resin passage portion, solidifies the fluid resin in the resin molded portion, and A resin sealing device, wherein the resin sealing device is sealed in the resin package molded in the resin molding portion.   5. The resin sealing device according to claim 4, further comprising a release film tensioning mechanism for tensioning a release film on the lower mold surface. The release film tensioning mechanism for tensioning the release film on the lower mold surface;
In the state where the upper mold and the lower mold are clamped, the mold release film stretched by the mold release film stretching mechanism and the exposed surface of the part to be sealed are in pressure contact with each other The resin sealing device according to claim 4.

Images