JPH04334099A - Chip packaging system - Google Patents

Abstract

PURPOSE:To lighten the load of a worker for nozzle exchange, and enable an easy and sure nozzle exchange. CONSTITUTION:Nozzles 9 accommodated in a nozzle stocker 7 at random are observed with a camera 2. Which nozzle 9 is accommodated in which stock part 8 is confirmed. The results are registered as stocker data. A transferring head 11 exchanges a nozzle for a specified nozzle 9 on the basis of mount data, chip data and the stocker data.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip mounting system, and more particularly to a means for mounting a chip on a substrate while automatically exchanging nozzles of a transfer head depending on the type of chip.

0002

[Prior Art] As a chip mounting device, a nozzle stocker is installed within the moving range of the transfer head, and the nozzles of the transfer head are automatically replaced depending on the type of chip to be mounted on the board. It is widely practiced that the chips of a parts feeder are picked up by adsorption to a nozzle, and then transferred and mounted on a board.

[0003] The nozzle stocker is provided with a plurality of stock parts, and a predetermined nozzle is stored in a predetermined stock part. In addition, the transfer head is
The type of chip to be mounted on the board is determined based on the mount data and chip data for mounting the chip on the board, and based on this, the nozzle is replaced with a designated nozzle stored in a designated stock section. was.

0004

SUMMARY OF THE INVENTION In the above-mentioned conventional means, the operator must store a predetermined nozzle in a predetermined stock portion in advance. However, with such conventional means, when storing the nozzle in the stock part, the operator must
It is necessary to avoid making mistakes in the stock part, and if you accidentally store a nozzle in a different stock part, the transfer head will exchange the nozzle with the wrong nozzle, making it impossible to pick up chips. There was a point.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a nozzle exchange means that can overcome the above-mentioned conventional means.

[0006]

[Means for Solving the Problems] To this end, the present invention provides a nozzle stocker having a plurality of stock parts, and a nozzle stored in each stock part while being driven by a moving table and observing the nozzles stored in each stock part. a camera that determines the type of each nozzle from identification means provided on the nozzle;
Based on the observation results of this camera, there is a stocker data table in which the types of nozzles stored in each stock section are registered, and mount data for mounting the chip on the board and/or chip data for mounting the chip on the board. Based on the stocker data in the stocker data table, the nozzle is replaced with the nozzle stored in the nozzle stocker, and the replaced nozzle picks up and positions the chip on the parts feeder. A chip mounting system is constructed from a transfer head that transfers and mounts the chip onto a board positioned at the same location.

[0007]

[Operation] According to the above structure, the nozzles in the stock section are observed with a camera to confirm the nozzle type, and the transfer head can exchange the nozzles with the nozzles confirmed with the camera. Therefore, the operator only has to store the nozzles randomly in the stock section of the nozzle stocker.

[0008]

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram of a chip mounting system. 1
is the CPU of the computer, and controls the mount data table A, feeder data table B, chip data table C, stocker data table D, and collation table E.

The mount data table A contains mount data, that is, the XY coordinates of the chip mounted on the board,
Feeder number of the parts feeder equipped with that chip
are registered in the order in which the chips are installed.

[0011] In the feeder data table B, each N
Chip No. (chip type) equipped on the O feeder
is registered.

Chip data table C contains chip no.
For each, the vertical and horizontal dimensions W and L and the nozzle number (nozzle type) of the nozzle that matches these are registered.

[0013] In the stocker data table D, the nozzle numbers (types of nozzles) stored in each stock section number are registered.

In the collation table E, for each chip number, a nozzle number suitable for that chip and a stock part number in which the nozzle of that nozzle number is stored are registered.

A camera 2 is driven by a moving table 3 and moves in the X and Y directions. This moving table 3 is
It is controlled by the CPU 1 via the movement controller 4. Further, the camera 2 is controlled by the CPU 1 via the camera control unit 6.

Reference numeral 7 denotes a nozzle stocker, which has a plurality of stock parts 8 (8a, 8b, 8c...). Each stock section 8 has different types of nozzles 9 (9a, 9a,
9b, 9c. ．． ．． ) are stored randomly.

As shown in FIG. 2, each nozzle 9 has
An identification means 10 is provided respectively. Identification means 10
are formed in two symmetrical positions on the flange portion 91 of the nozzle 9. By providing a plurality of identification means 10 in this manner, even if the mounting direction of the nozzle 9 with respect to the stock portion 8 varies, the identification means 10 can be reliably observed by the camera 2.

Reference numeral 11 denotes a transfer head, and the nozzle 9
is installed in a replaceable manner. This transfer head 11 is mounted on a moving table 12 that is controlled by the CPU 1 via a movement controller 13, and moves in the X and Y directions.

14 is a parts feeder 15 (15a, 15
b, 15c...). Each parts feeder 15 is equipped with a chip P. 16
is a positioning section where the substrate 17 is positioned. The transfer head 11 picks up a predetermined type of chip P of a predetermined parts feeder 15 by adsorbing it to the nozzle 9 while moving in the XY directions, and mounts it on the substrate 17. Note that the chip P may be a bare chip mounted on a wafer. 18
is a display as a notification means, which is controlled by the CPU 1 and notifies the worker of necessary information.

[0020] This system consists of the above configuration,
Next, the overall operation will be explained. The operator stores the nozzles 9 in each stock part 8 of the nozzle stocker 7 in advance. In this case, as shown in FIG.
a, 9b...) at random in the stock section 8 (8a, 8
b...). That is, in this means, any nozzle 9 may be stored in any stock part 8.

Next, the camera 2 arrives above the nozzle stocker 7, and the nozzles 9 stored in each stock part 8 are exposed.
The identification means 10 is observed to identify the type of nozzle 9 stored in each stock section 8, and the result is registered in the stocker data table D. In this embodiment, the stock parts 8a, 8b, 8c have nozzles 9c, 9f, 9, respectively.
a is stored.

[0022] The transfer head 11 has the above-mentioned three tables A.
, B, C, the predetermined parts feeder 1
A predetermined chip P mounted on the substrate 17 is picked up and mounted at a predetermined coordinate position on the substrate 17.

The shapes and dimensions of the chips P vary, and the transfer head 11 must be fitted with a nozzle 9 that is compatible with the type of the chip P.

The type of chip P to be next mounted on the substrate 17 by the transfer head 11 and the type of nozzle 9 suitable for the chip P are known from the data in the three tables A, B, and C. Further, the number of the stock section 8 in which the necessary nozzle 9 is stored can be determined from the stocker data table D observed and registered by the camera 2 as described above. Therefore, the transfer head 11 can arrive above a predetermined stock portion of the nozzle stocker 7 and automatically replace the nozzle 9 with a nozzle 9 that is compatible with the chip P to be picked up next.

[0025] If the nozzle stocker 7 does not have a predetermined nozzle 8, the display 18 informs the operator of this fact.

[0026]

Effects of the Invention As explained above, the present invention provides a nozzle stocker having a plurality of stock parts, and a method for observing the nozzles stored in each stock part while being driven by a moving table, and A camera that determines the type of each nozzle from the identification means provided in the holder, a stocker data table in which the type of nozzle stored in each stock section is registered based on the observation results of this camera, and a chip The type of chip to be mounted on the board is determined based on the mount data and/or chip data for mounting on the board, and the nozzle is replaced with the nozzle stored in the nozzle stocker based on the stocker data in the stocker data table. The chip mounting system consists of a transfer head that picks up the chip from the parts feeder using the replaced nozzle, transfers it to the board positioned in the positioning section, and then loads the chip onto the board positioned at the positioning section. The nozzles can be randomly stored in the stock part of the chip, and it is possible to reliably prevent the transfer head from accidentally replacing the nozzle with a nozzle that is not compatible with the chip.

[Brief explanation of drawings]

[Fig. 1] Overall diagram of a chip mounting system according to the present invention

[Fig. 2] A perspective view of a nozzle according to the present invention.

[Explanation of symbols]

1 CPU 2 Camera 3. Moving table 7 Nozzle stocker 8 Stock section 9 Nozzle 10 Identification means 11 Transfer head 15 Parts feeder 16 Positioning part 17 Board A Mount data table B Feeder data table C Chip data table D Stocker data table E Verification table

Claims (1)

[Claims] Claims: 1. A nozzle stocker having a plurality of stock parts; the nozzles stored in each stock part are observed while moving by a moving table; A camera that identifies the nozzle type, a stocker data table that registers the nozzle types stored in each stock section based on the observation results of this camera, and mount data and mount data for mounting the chip on the board. or determining the type of chip to be mounted on the board based on the chip data, and replacing the nozzle with a nozzle stored in the nozzle stocker based on the stocker data of the stocker data table;
A chip mounting system comprising: a transfer head that picks up a chip from a parts feeder using a replaced nozzle, and transfers and mounts the chip on a substrate positioned in a positioning section.