JP2009210311A - Performance board discrimination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a performance board discrimination device can prevent wrong mounting of a performance board having a different specification. <P>SOLUTION: This performance board discrimination device equipped with a test head having a plurality of built-in head mounting cards, and the performance board connected to the test head, is also equipped with a controller for controlling so that the performance board is not locked with the test head, when the connected performance board does not agree with a specification based on a combination of the plurality of head mounting cards built in the test head. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a performance board identification device for a semiconductor test apparatus, and more particularly to a performance board identification device capable of preventing erroneous mounting of a performance board having a different specification.

  Generally, a semiconductor test apparatus determines whether a DUT is good or bad based on the output of the DUT obtained by giving a test signal to an IC, LSI, or the like to be tested (hereinafter also referred to as a DUT). Prior art documents related to such a semiconductor test apparatus include the following.

JP-A-2005-321238

By the way, when the quality of the DUT is judged using such a semiconductor test apparatus, the test head of the semiconductor test apparatus is connected to the DUT via a connection tool called a performance board.

Further, this performance board includes, for example, one that outputs power to the DUT, one that outputs a test pattern, and one that is used for level output depending on the nature of the DUT. However, although there are multiple functions required in this way, the same type of performance board cannot achieve all of these functions, so the appropriate one is selected and implemented from multiple types. The

  A conventional performance board identification apparatus will be described below with reference to the drawings. FIG. 8 is a configuration diagram of a conventional performance board identification apparatus. The performance board 1 is mounted with electrical components (not shown) and mounted with various functions based on the nature of the DUT. An appropriate one of a plurality of types is mounted and used. A head-side connector 12 is provided on the lower surface (test head 2 side) of the performance board, and a card-side connector 11 is provided on the pin electronics card (not shown).

  The test head 2 is provided with a large number of test head mounting cards 22 as shown in FIG. 9, a performance board lock switch 5, a performance board lifting mechanism (lifter) 6, a performance board locking mechanism 7, and a performance board mounting detection. A circuit 31, a performance board up / down detection circuit 61, and a performance board lock detection circuit 71 are provided. The performance board elevating mechanism 6 is composed of an air cylinder or the like.

Further, the configuration of the head mounting card 22 in FIG. 9 may be different for each user, and the configuration may be changed when the DUT is changed after delivery. A head-side connector 21 for connecting to the performance board 1 is provided on the upper surface (performance board 1 side) of the test head.

  Returning again to FIG. The sequence control circuit 4 performs control for connecting the performance board 1 and the test head 2 based on a signal output from the performance board mounting detection circuit 31 mounted on the test head 2. The specific contents of the control will be described in the following operation description.

  The operation of FIG. 8 will be described. FIG. 10 is a flowchart for explaining the operation of FIG. When the performance board 1 is mounted on the test head 2, the performance board mounting detection circuit 31 detects the mounting, and a signal indicating that the mounting is detected is input to the sequence control circuit 4 via the control line 33 (step). A1, step A2).

After mounting the performance board 1 on the test head 2, the operator turns on the performance board lock switch 5 (step A3). When the performance board lock switch 5 is turned on, a signal indicating that the performance board lock switch 5 is locked is input to the sequence control circuit 4 via the control line 51.

The sequence control circuit 4 outputs a signal for lowering the performance board 1 to the performance board lifting mechanism 6 via the control line 41 (step A4). When the performance board lifting mechanism 6 receives a signal to lower the performance board via the control line 41, the performance board lifting mechanism 6 operates the lifting mechanism. By this operation, the performance board 1 is lowered to a predetermined position.

When the lowering of the lifter is completed, the performance board raising / lowering detection circuit 61 detects a mechanical raising / lowering state and outputs a signal indicating that the lowering of the performance board 1 is completed to the sequence control circuit 4 via the control line 62 (step A5). ). However, if the lowering of the lifter cannot be confirmed, it is determined whether the performance board lock switch 5 has been pressed (step A8).

The sequence control circuit 4 outputs a signal for locking the performance board 1 to the performance board lock mechanism 7 via the control line 42. In response to this signal, the performance board lock mechanism 7 operates a connector lock mechanism (not shown) (step A6).

When the connector locking mechanism operates, the head side connector 12 and the head side connector 21 are locked. When the lock operation is completed, the performance board lock detection circuit 71 detects the lock state and outputs a signal indicating that the lock is detected via the control line 72 to the sequence control circuit 4 to complete the connection operation (step A7). ).

As described above, the performance board 1 is connected to the test head 2 based on the control of the sequence control circuit 4.

By the way, the operator connects the performance board 1 to the test head 2 after confirming whether the head mounting card 22 is mounted based on the specification.

However, in the past, since the operator visually confirmed that the head mounting card 22 was mounted according to the specification, an error was made by the operator, and as a result, the shape of the connector when mounting the performance board was changed. There is a case where the DUT cannot be measured because the specification does not match even if the connector can be fitted, even though the connector can be fitted.

  The present invention has been made in view of these problems, and an object of the present invention is to provide a performance board identification device capable of preventing erroneous mounting of a performance board different from the specification.

In order to achieve such a problem, the invention described in claim 1
In a performance board identification device comprising a test head containing a plurality of head mounting cards and a performance boat connected to the test head,
A performance board identification device comprising: a controller for displaying an error when the connected performance board does not match a specification based on a combination of the plurality of head mounting cards built in the test head.

  According to a second aspect of the present invention, in the performance board identifying apparatus according to the first aspect, the mounting positions of the connectors of the plurality of head mounted cards are unified.

The invention according to claim 3 is the performance board identification device according to claim 1 or 2,
The performance board includes a performance board type setting circuit for determining the type of the performance board,
The test head includes a performance board mounting / type detection circuit that determines the type of the connected performance board based on the position where the performance board type setting circuit is mounted.

Invention of Claim 4 is the performance board identification device in any one of Claims 1-3,
The controller compares the information about the type of the performance board output from the performance board mounting / type detection circuit with the signal for identifying the head mounting card output from the head mounting card, so that the two match. Judge whether or not to do.

  The present invention has the following effects. If the combination of the performance board and test head installed by the operator does not match the specifications, the two will not be locked, and it will not be possible to shift to the subsequent measurement work, thus preventing erroneous mounting of the performance board.

  Moreover, since all the shapes of the head mounting card are unified, the connector is not damaged.

Hereinafter, a configuration example of the performance board identification device of the present invention will be described with reference to FIG. 1, but the same components as those in FIG. The performance board 1 is newly provided with a performance board type setting circuit 13.

The test head 2 is provided with a performance board mounting / type detection circuit 36 instead of the performance board mounting detection circuit 31. The control unit 8 includes a comparison unit 82 and a memory 83. Identification information output from the test head 2 is stored in the memory 83, and this identification information is compared with information output from the performance board mounting / type detection circuit 36 by the comparison unit 82. The controller 85 and the sequence control circuit 4 constitute a controller 85.

The configuration of FIG. 2 will be described. The head mounting card 22 is provided with a connector 21 fitted to the head side connector 12 and a head mounting card identification signal output circuit 23, and a signal for identifying the mounted card is transmitted via the control line 24. Is output. The positions where the head side connectors 21 are mounted are the same for each head mounting card 22.

Next, the configuration of FIG. 3 will be described. The performance board type setting circuit 13 is provided on the test head 2 side of the performance board 1, but the position where the performance board type setting circuit 13 is provided differs depending on the type of the performance board 1. Further, the performance board type setting circuit 13 is composed of mechanical parts and the like. The performance board mounting / type detection circuit 36 includes a plurality of photoswitches 34 and encoders.

The type of the performance board 1 is detected according to which photo switch 34 the performance board type setting circuit 13 is inserted, and the encoder 35 outputs information on the type of the performance board via the control line 33.

Next, the operation of FIG. 1 will be described with reference to FIG. Here, FIG. 4 is a flowchart of FIG. First, the control unit 8 reads the identification information output from the head mounting card identification signal output circuit 23 of FIG. 2 via the control line 24 and stores it in the memory 83 (step B1).

When the performance board 1 is mounted, any one of the photo switches 34 in the performance board mounting / type detection circuit 36 of FIG. 3 reacts. The encoder circuit 35 outputs this information to the control unit 8 through the control line 33 (step B2).

The control unit 8 compares and determines the information input from the comparison unit 82 via the control line 33 and the identification information output from all the head mounting cards 22 via the control line 24 (step B3). . If the information does not match as a result of the comparison determination, an error is displayed on a display device (not shown), and the operation of connecting the performance board 1 to the test head 2 is not performed. Instead of displaying an error on the display device, a buzzer for notifying an error may be sounded.

On the other hand, if they match, the control unit 8 outputs a signal to that effect to the sequence control circuit 4 via the control line 81.

When a signal indicating that the two match is input via the control line 81, the sequence control circuit 4 adjusts the position of the lifter and connects the performance board 1 to the test head 2 (step B4). Note that the connection sequence is the same as in the conventional method.

After confirming that the performance board 1 is mounted on the test head 2, the operator turns on the performance board lock switch 5. When the performance switch 5 is turned on, a signal indicating that the performance switch 5 is locked is input to the sequence control circuit 4 via the control line 51. The sequence control circuit 4 outputs a signal for lowering the lifter to the performance board lifting mechanism 6 via the control line 41.

The performance board lifting mechanism 6 receives a signal to that effect via the control line 41 and operates the lifting mechanism. The performance board 1 is lowered to the designated position by the performance board lifting mechanism 6 (step B6).

When the descent is completed, the performance board elevating detection circuit 61 detects a mechanical elevating state (step B61), and outputs a signal to the sequence control circuit 4 that the descent of the performance board 1 is completed via the control line 62. To do. On the other hand, if no lowering is detected, it is determined whether or not the performance board lock switch 5 has been pressed (step B9).

The sequence control circuit 4 outputs a signal for locking the performance board to the performance board lock mechanism 7 via the control line 42. The performance board lock mechanism 7 receives this signal via the control line 42 and operates a connector lock mechanism (not shown) (step B7).

When the connector lock mechanism operates, the head side connector 12 on the performance board 1 and the head side connector 21 on the test head 2 side are locked. When the performance board lock detection circuit 71 detects the lock state, the performance board lock detection circuit 71 outputs a signal indicating that the lock has been detected to the sequence control circuit 4 via the control line 72, and the connection operation is completed (step B8).

As described above, the type setting circuit 13 is provided at a different position for each type of the performance board 1 and the head mounting card identification signal output circuit 23 in which the identification information is stored is provided. An error is displayed even if you try to attach it.

In addition, since the position where the head side connector 21 is mounted is common to each head mounting card 22, even if a performance board different from the specification is mounted on the test head, the connectors are fitted together, so the connector is damaged. Never do.

  Next, an application example of the present invention will be described with reference to FIG. The configuration of a head mounting card 22 (not shown) built in the test head 2 used in the configuration of FIG. 5 (described in FIG. 2) and the performance board mounting / type detection circuit 36 (described in FIG. 3) are as follows. These are the same as FIG. 2 and FIG.

In the configuration of FIG. 5, a card lock mechanism 14, a card lock detection circuit 15, and a performance board type signal output circuit 16 are newly provided in the performance board 1. The description of these configurations will be described later. In addition to this.

The operation of FIG. 5 will be described. First, the test head 2 and the performance board 1 are connected. After the connection is completed, the identification information output from the head mounting card 22 via the control line 24 and the information output from the performance board type signal output circuit 9 via the control line 91 are compared.

If the comparison results do not match, the sequence control circuit 4 does not output the card lock EN signal 46 to the connected external device 110. If the card lock EN signal 46 cannot be recognized, the connected external device 110 does not output a request signal (card lock request signal 111) for connecting the card 100 and the performance board 1 to the sequence control circuit 4.

On the other hand, if the comparison results match, the next operation is performed. A recognition signal (card identification signal 112) of the card 100 is input to the sequence control circuit 4 from the connected external device 110. The card identification signal 112 is recognized by providing a memory or the like pre-set to the card 100 to read and recognize the contents of the memory, or changing the mechanical component position when the card 10 is attached to the connected external device 11. You may do it.

When the card identification signal 112 is input, the sequence control circuit 4 transmits the information to the control unit 8 via the control line 44. The comparison unit 8 provided in the control unit 8 includes information input via the control line 44, information input from the head mounting card 22 via the control line 24, and the performance board type signal output circuit 16. The information output via the control line 91 is compared.

If these pieces of information do not match, the card lock EN signal 46 is not transmitted as described above. On the other hand, when these pieces of information match, a signal indicating that the information matches is sent from the control unit 8 to the sequence control circuit 4 via the control line 81.

When the card lock request signal 111 is output from the connected external device 110 to the sequence control circuit 4 with all the information matched, the sequence control circuit 4 connects the card 100 to the card lock mechanism 14 via the control line 45. Outputs a lock signal.

The card lock mechanism 14 locks the connection between the card-side connector 11 and the card-side connector 101, and the card lock detection circuit 15 detects this lock state and notifies that via the control line 122. Output to.

The sequence control circuit 4 receives this signal via the control line 122, outputs a card lock completion signal 47 to the connected external device 110, and the connection between the performance board 1 and the card 100 is completed.

As described above, by mounting the performance board type signal output circuit 16 in the performance board, the detection circuit such as the photo switch 34 described with reference to FIG. Further, since the photocoupler 34 is not required, even if the type of the head mounting card 22 is increased due to diversification of the configuration of the test head 2, the remodeling is easy.

It is a block diagram of the performance board identification device by this invention. It is a block diagram of the head mounting card | curd of this invention. It is a figure for demonstrating the connection state of a performance board and a performance board mounting and classification detection circuit. It is a flowchart of FIG. It is a block diagram of the application example of this invention. It is a flowchart of FIG. It is a flowchart of FIG. It is a block diagram of the conventional performance board identification device. 2 is a configuration diagram of a test head 2. FIG. It is a flowchart of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Performance board 2 Test head 4 Sequence control circuit 5 Performance board lock switch 6 Performance board raising / lowering mechanism 7 Performance board lock mechanism 8 Control part 12 Head side connector 13 Performance board classification setting circuit 14 Card lock mechanism 15 Card lock detection circuit 16 Performance board Type signal output circuit 21 Head side connector 36 Performance board mounting detection circuit 61 Performance board lift detection circuit 71 Performance board lock detection circuit 82 Comparison unit 83 Memory 110 External device connected

Claims (4)

In a performance board identification device comprising a test head containing a plurality of head mounting cards and a performance boat connected to the test head,
A performance board identification device comprising: a controller for displaying an error when the connected performance board does not match a specification based on a combination of the plurality of head mounting cards built in the test head.   2. The performance board identification apparatus according to claim 1, wherein the mounting positions of the connectors of the plurality of head mounting cards are unified. The performance board includes a performance board type setting circuit for determining the type of the performance board,
3. The test head includes a performance board mounting / type detecting circuit that determines a type of a connected performance board based on a position where the performance board type setting circuit is mounted. Performance board identification device. The controller compares the information about the type of the performance board output from the performance board mounting / type detection circuit with the signal for identifying the head mounting card output from the head mounting card, so that the two match. The performance board identification device according to claim 1, wherein it is determined whether or not to perform.

Images