JP4724693B2 - Resin sealing device and monitor screen display method of resin sealing device - Google Patents

Description

  The present invention relates to a technical field of resin sealing in which a work on which a semiconductor chip is mounted is sealed with resin.

  In the resin sealing device, a product such as a lead frame on which a semiconductor chip is mounted, a substrate, a resin, or the like is used to press a mold to produce a product (molded product). For example, in the resin sealing device described in Patent Document 1, a workpiece such as a molded product before resin sealing, a resin, and further a molded product after resin sealing is transferred from a predetermined position by a transport mechanism such as a loader or unloader. Resin sealing is performed while transporting to the position.

  In Patent Document 2, the operating status of an apparatus (here, an injection molding machine) is displayed on a display screen (monitor screen) so that the operating status of the apparatus can be easily grasped in real time.

JP 2001-300975 A JP 2003-1686 A

  The inventor has come up with the idea of providing a monitor screen and displaying the movement of the work in the apparatus on the monitor screen in order to confirm the operation status of the resin seal apparatus in real time. However, in recent years, it has been demanded to produce various products in one apparatus. That is, at least one of so-called “materials” such as a lead frame and a substrate to be used as materials and a resin as a sealing material is prepared, and a variety of products are produced using these materials. .

  In the case of a resin sealing device that is produced in such a form, there are cases where information is insufficient even if only the presence / absence of a workpiece at a predetermined position is displayed on the monitor screen. For example, in the case where the apparatus is stopped due to some trouble, it is not possible to grasp from the screen which type of work is in trouble. If recovery measures are taken, for example, the pot life of the resin may have passed unnecessarily, or the work may be discarded as a result of heating the work more than necessary (for example, heating with a mold or a preheater). This situation can occur.

  The present invention has been made to solve such problems, and it is an object of the present invention to make it possible to grasp the type on a monitor screen even when a plurality of types of at least one material are used. It is said.

In the present invention, there are a plurality of types of at least one material (for example, a lead frame, a substrate, a resin, a semiconductor chip, etc.), and the material is transported to a mold by a transport means for transporting the material. a resin sealing apparatus is performed, the check can monitor screen for the presence of the material at a plurality of predetermined positions where the material in the resin sealing apparatus is transported, in the resin sealing apparatus, the After recognizing the type of material, the display mode of each part corresponding to the plurality of predetermined positions on the monitor screen is determined according to the correspondence of the display mode previously performed according to the type of material. It is possible to solve the above-mentioned problem by providing means for changing the material according to the type of the material present at the predetermined position.

By displaying the monitor screen in this way, it is possible to visually grasp on the monitor screen which kind of work (material) is located at which position in the apparatus. For example, any of the shapes, patterns, colors, or combinations of the display modes of the respective locations corresponding to “ a plurality of predetermined positions at which the material is transported in the apparatus” on the monitor screen is used. This is realized by changing according to the correspondence of the display modes performed according to the type of the item . In particular, if the color is changed, the operator can intuitively grasp the type of work.

Further, actually comprises a discernible discrimination means the type of the material in step said material is conveyed, lever to recognize the type of the material on the basis of a discrimination result of該判by means are conveyed to the actual It is possible to eliminate the discrepancy between the type of material and the type of material on the monitor screen display.

In another aspect, the present invention is a display method of a monitor screen that displays the operation status of the resin sealing device, and there are a plurality of types of at least one material, and the sealing work is performed using the material. Display mode of each portion corresponding to the plurality of predetermined positions in the monitor screen when the material is positioned at a plurality of predetermined positions where the material is conveyed in the resin sealing device and upon recognizing the type of the material, in accordance with correspondence of the display mode which went according to the type of advance the material, as a display method of a monitor screen, characterized in that vary depending on the type of material It is possible to capture.

  The “material” mentioned here includes, of course, a lead frame, a substrate, a semiconductor chip, and a resin before resin sealing is performed, but the resin sealing is performed and “product (molded product)”. It is a concept that includes the material that has become. In other words, it can be widely regarded as “work”.

  By applying the present invention, the operation status of the resin sealing device can be grasped on the monitor screen together with the type of material.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic configuration diagram of a resin sealing device 100 which is an example of an embodiment of the present invention. FIG. 2 is an image diagram of the monitor screen 190.

  For convenience of explanation, the left-right direction in FIG. 1 will be described as the X direction, the up-down direction as the Y direction, and the direction orthogonal to both the X direction and the Y direction as the Z direction (height direction).

<Configuration of resin sealing device>
In the resin sealing device 100, a substrate supply portion 102 in which a lead frame (workpiece) before resin sealing is accommodated and a lead frame after resin sealing are accommodated on a base portion 101 serving as a base of the device. The molded product storage unit 104 and the four molds 106 arranged side by side between the substrate supply unit 102 and the molded product storage unit 104 are arranged in a row. The four molds 106 each produce a different product. Therefore, although not necessarily clear on the drawings, the shape of the cavity is different. The substrate supply unit 102 has a configuration in which a plurality of magazines each storing a plurality of lead frames are arranged, and different types of lead frames are stored for each magazine. Further, in the vicinity of the substrate supply unit 102, a turning table 103 for turning the lead frame taken out from the substrate supply unit 102 by a transport hand (not shown) and adjusting the orientation is arranged. In addition, a preheater unit 105 that heats and keeps the lead frame up to a predetermined temperature after the orientation is adjusted by the turning table 103 is disposed. Further, along with the turning table 103 and the preheater unit 105, a resin tablet supply unit 109 to which a resin tablet as a sealing material is supplied is arranged. On the other hand, in the vicinity of the molded product storage unit 104, a cooling stage (cooling unit) 107 that cools the lead frame after resin sealing, and an unnecessary portion (cull unit) of the lead frame cooled by the cooling stage 107 are taken out. A gate break portion 108 is disposed.

  Further, an X-direction guide 120 is installed on the base portion 101 in parallel with the arrangement of the substrate supply unit 102, the molded product storage unit 104, and the mold 106. On this X direction guide 120, the loader 130 and the unloader 140 are arrange | positioned so that it can move freely along the said guide. These loader 130 and unloader 140 function as a transport mechanism for a plurality of molds 106 arranged. That is, the loader 130 carries the lead frame supplied from the substrate supply unit 102 into the mold 106 at a predetermined timing. On the other hand, the unloader 140 has a function of carrying out the lead frame resin-sealed by each mold 106 and storing it in the molded product storage unit 104.

  In the present embodiment, four molds 106 are arranged as described above. However, the number of molds 106 is not necessarily limited to four, and one to three, or five or more molds are arranged. It may be. Furthermore, the substrate supply unit 102 and the molded product storage unit 104 may be disposed on the same side, and the loader 130 and the unloader 140 may be realized by a single transport mechanism.

  Further, all the above parts are housed in a casing (not shown), and a monitor screen capable of displaying the operation status of the resin sealing device 100 is disposed on the side surface of the casing.

<Display contents of monitor screen>
The monitor screen in the present embodiment is displayed as shown in FIG. 2, for example.

  The image display on the monitor screen 190 is a display according to the configuration of the resin sealing device shown in FIG. That is, the display is a schematic representation of the actual arrangement of the resin sealing device 100, and the correspondence between the screen and the device can be grasped at a glance. Note that the “display that schematically represents the device” itself may be displayed as a monitor image, or a method such as physically drawing a figure on the surface of the monitor screen may be used.

  Specifically, a turning table display 203 corresponding to the turning table 103, a preheater part display 205 corresponding to the preheater part 105, a resin tablet supply part display 209 corresponding to the resin tablet supply part 109, and a mold corresponding to the mold 106 Display 206, loader display 230 corresponding to loader 130, unloader display 240 corresponding to unloader 140, cooling stage display 207 corresponding to cooling stage 107, gate break portion display 208 corresponding to gate break portion 108, molded product storage portion 104 The molded product storage unit display 204 corresponding to the above is displayed. Note that these are merely examples, and it is free to provide display of portions other than these. In each display, two displays (lead frame display portion LF) having a vertically long rectangle are displayed as displays corresponding to the lead frame (see FIG. 3A). This is because the two lead frames are simultaneously transported and sealed with resin. In addition, three round displays (resin display portion RC) are displayed as the display corresponding to the resin during the vertically long display (see FIG. 3A). Here, the reason why the round display is not displayed on the turning table display 203 and the preheater section display 205 is that no resin is supplied in this process. Further, in the unloader display 240, the cooling stage display 207, and the gate break display 208, the resin is displayed as “girder”. This indicates the resin of the “cull portion” after the sealing process. (See FIG. 3B). Further, the reason why the resin is not displayed on the molded product storage portion display 204 is that the resin of the “cull portion” is gate-breaked and discarded at the gate break portion 108.

  Further, when there is no lead frame or resin at each position, the display of each part is displayed in black. When there is a lead frame, resin, etc. at each position, the color changes according to the type (colors associated with the type in advance: for example, blue, red, yellow, green, etc.). Yes.

  Here, “color change” is used as the display mode, but “pattern change”, “shape change”, and “combination thereof” can also be adopted. Further, “color change” is a concept including a so-called “flashing” mode in which colors before and after the change are repeated. In this embodiment, even when there is no lead frame or resin, the portion is positively displayed in “black”, but even if “nothing is displayed” is displayed that it does not exist. Good.

<Operation of the entire resin sealing device>
Next, the operation of the resin sealing device 100 will be described.

  First, a single workpiece (substrate or lead frame) before resin sealing is conveyed from the substrate supply unit 102 to the turning table 103. This conveyance is performed by a conveyance hand. By this conveyance, the color of one lead frame display portion LF in the turning table display 203 is changed to, for example, “red”. When one workpiece is conveyed to the turning table 103, the turning table 103 rotates. As a result, “red” in the lead frame display portion LF of the turning table display 203 moves to the other side. Thereafter, another workpiece is transferred to the turning table 103 by the transfer hand, and a total of two workpieces are placed on the turning table 103. As a result, both lead frame display portions LF of the turning table display 203 are displayed in “red”. Thereafter, the two workpieces are simultaneously conveyed to the preheater 105 by the loader 130. Here, the work is heated to a predetermined temperature and kept warm. Two preheaters 105 are provided in the present embodiment, and the preheater 105 is conveyed to one of them (the vacant side). By this conveyance, the lead frame display portion LF of the turning table display 203 becomes “black”, and the lead frame display portion LF of the preheater portion display 205 becomes “red”. On the other hand, a resin tablet as a sealing material is supplied from the resin tablet supply unit 109. Accordingly, three round parts (resin tablet display part RC) of the resin tablet supply part display 209 are displayed in, for example, “red”. Thereafter, the work and the resin tablet kept warm in the preheater unit 105 are conveyed to the mold 106 by the loader 130. Along with this, the preheater display 205 and the resin tablet supply unit display 209 change to “black”, and at the same time, all the resin tablet display units RC of the loader display 230 become “red”.

  Thereafter, the workpiece is transported to a predetermined mold 106, and when the resin sealing (pressing operation) is completed in the mold 106, the unsealed workpiece is transported to the cooling stage 107 by the unloader 140 in the future. In the cooling stage 107, the workpiece after resin sealing is cooled to a predetermined temperature. Thereafter, the work is again transferred from the cooling stage 107 to the gate break unit 108 by the unloader 140. Here, an unnecessary portion of the work, that is, a resin corresponding to the cull portion is removed by gate break. Unnecessary parts are discarded, and the remaining work is conveyed to the product storage unit 104 by the unloader 140. Here again, the display color of the portion corresponding to each position on the monitor screen 190 sequentially changes to “red”. Resin sealing is continuously performed by repeating such a procedure.

  Further, the next lead frame is conveyed from the substrate supply unit 102 to the turning table 103 at the time when the turning table 103 is empty. Since the lead frame conveyed here is of a different type from the previous lead frame, the color of the lead frame display portion LF of the turning table display 203 is displayed in, for example, “blue”. Thereafter, the work proceeds through the same steps as described above. Similarly, in the case of other types of lead frames, “yellow” and “green” are displayed.

  As described above, in the resin sealing device 100, it is possible to visually grasp “which type of workpiece is present at which position” from the image on the monitor screen 190. By displaying in this way, for example, when the device stops due to some trouble, it is possible to immediately know on the monitor screen which type of work is in trouble at which position. Because it can, it will be possible to move quickly to recovery measures. As a result, the pot life of the resin has passed unnecessarily, or as a result of the workpiece being heated more than necessary (for example, heating with a mold or a preheater), the situation in which the workpiece has to be discarded has occurred. It is possible to prevent.

  In order to change the display mode according to the type of material on the monitor screen, it is necessary for the device side to recognize the type of material located at each predetermined location. For this recognition, for example, the information may be used on the assumption that the material previously stored in the specific magazine is a specific type of material. However, in that case, if there is an error in the material itself that should be accommodated in the specific magazine, there will be a discrepancy between the display on the monitor screen and the type of material actually transported in the apparatus. Therefore, for example, a determination unit such as a camera may be separately provided in the material conveyance process, and the display may be performed based on the determination result of the determination unit. If comprised in this way, it will become possible to eliminate the discrepancy between the type of material actually transported and the type of material on the monitor screen display.

  Moreover, although the resin sealing apparatus which performs "transfer molding" is demonstrated to the above as an example, it is not a thing of the meaning limited to this. In addition, it can be widely applied regardless of the resin sealing method such as “compression molding”.

  In particular, it is suitable for a so-called “multi-press” type resin sealing apparatus having a plurality of molds.

Schematic configuration diagram of a resin sealing device 100 as an example of an embodiment of the present invention Image of monitor screen Display example on the monitor screen

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Resin sealing apparatus 101 ... Base part 102 ... Substrate supply part 103 ... Turning table 104 ... Molded article storage part 105 ... Preheater 106 ... Mold 107 ... Cooling stage 108 ... Gate break 109 ... Resin tablet supply part 120 ... X direction Guide 130 ... Loader 140 ... Unloader 180 ... Lead frame 190 ... Monitor screen 203 ... Turning table display 204 ... Molded product storage display 205 ... Preheater display 206 ... Mold display 207 ... Cooling stage display 208 ... Gate break display 209 ... Resin tablet Supply unit display 230 ... loader display 240 ... unloader display

Claims (5)

A resin sealing device in which a plurality of types of at least one or more materials are present, and the material is transported to a mold by a transport unit that transports the material, and a sealing operation is performed.
And verifiable monitor screen for the presence of the material at a plurality of predetermined positions where the material in the resin sealing apparatus is transported,
On the resin sealing device side, after recognizing the type of the material, the display mode of each portion corresponding to the plurality of predetermined positions on the monitor screen was previously performed according to the type of the material. And a means for changing the display mode according to the type of the material present at the plurality of predetermined positions in accordance with the correspondence of the display modes. In claim 1,
The resin sealing device, wherein the material is any one of a lead frame, a substrate, a resin, and a semiconductor chip. In claim 1 or 2,
The display mode is any one of a shape, a pattern, a color, or a combination thereof. In any one of Claims 1 thru | or 3,
A discriminating means capable of actually discriminating the type of the material in the process of transporting the material,
A resin sealing device that recognizes the type of the material based on a determination result of the determination means. A display method of a monitor screen for displaying the operation status of the resin sealing device,
There are multiple types of at least one or more materials, and the sealing work is performed using the materials,
Wherein when the material in the resin sealing apparatus is located, the material to a plurality of predetermined positions to be transported, the display mode of each portion corresponding to a predetermined position of the plurality of in the monitor screen, the in recognition of the type of material, in accordance with correspondence of the display mode which went according to the type of advance the material, the display method of the monitor screen, characterized in that vary depending on the type of material.

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