KR101170435B1 - Feed Through Board - Google Patents

Abstract

We present a feed-through board for electrically connecting the system board and the burn-in board in the burn-in test system.

The feed-through board according to the present invention is a feed-through board including a circuit board portion on which a plurality of circuit pattern printing portions are formed, wherein the circuit board portion is formed in an auxiliary space portion and at least one auxiliary space portion provided between the circuit pattern printing portions. Including extended circuit pattern printing unit, more signals can be transmitted to the burn-in board without changing the configuration of the burn-in system, thereby improving test efficiency.

Burn-in, Feed Through

Description

Feed Through Board {Feed Through Board}

The present invention relates to a feed-through board board (hereinafter referred to as an FT board), and more particularly, to an FT board for electrically connecting a system board and a burn-in board in a burn-in test system. .

Generally, after fabricating a semiconductor device, a burn-in test is performed. The burn-in test is a kind of reliability test for semiconductor devices. The burn-in test is a process for finding a semiconductor device in which an initial failure occurs by operating the semiconductor device in an environment worse than actual use conditions.

1 is a schematic configuration diagram of a general burn-in test system.

As shown, the burn-in test system generates a chamber 10 in which the burn-in board 12 for mounting the device under test is installed, generates various test control signals (addresses, clocks, data signals, etc.) required for the test, and turns on the power. It is connected to the system board 20 to supply, the system board 20 is connected between the motherboard 30 and the motherboard 30 and the burn-in board 12 for collecting the signals output from the system board 20 as one And an FT board 40 for transmitting signals from the motherboard 30 to the burn-in board 12.

The chamber 10 for the burn-in test is a thermostat, and the FT board 40 is fixed to the chamber 10 using screws or the like, and the FT board 40 is not changed to the external environment so that the temperature in the chamber 10 does not change with the external environment. Configure.

2 is a perspective view of a typical feed through board.

Referring to FIG. 2, the FT board 40 includes a circuit board portion 410 and an edge connector 420 including a plurality of circuit patterns. For example, three circuit board portions 410 are formed, and each circuit board portion 410 is connected to each edge connector 420.

The circuit board portion 410 is printed with a circuit pattern for transmitting an electrical signal from the motherboard 30 to the burn-in board 12.

In addition, each of the edge connectors 420 may extend from the main body 421, the first pin 423 protruding toward the back side of the main body 421, and the second pin 423 extending from the first pin 423 to the front side of the main body 421. Pin 425. Here, the first fin 423 and the second fin 425 are integrally formed, and the first fin 423 is soldered to the circuit board portion 410.

On the other hand, the edge connector 420 is fixed by a steel plate bracket (not shown) that is a reinforcing structure, and then the guide is fastened to the front portion of the edge connector 420.

To this end, a plurality of holes 427 are formed at designated positions of each edge connector 420, the plate bracket and the guide, so that the edge connector 420, the plate bracket and the guide can be fastened. Here, of course, the positions of the holes formed in the respective components correspond to each other. Here, the guide serves to guide the burn-in board to be connected to the second pin 423 of the edge connector 420.

3 is a view for explaining the fastening state of the feed through board and the guide shown in FIG.

Figure 3 (a) shows the guide, (b) is a simplified illustration of the edge connector of the front portion of the FT board 40, (c) shows the coupling state of the FT board 40 and the guide.

After the iron plate bracket is fastened to the FT board 40, the first connection hole 429 is provided at the front portion of the main body 421 of the edge connector 420 to fasten the FT board 40 to the guide. In addition, the guide is provided with a second connection hole 427 at a position corresponding to the first connection hole 429.

When the guide is fastened to the FT board 40, the first connection hole 429 and the second connection hole 427 overlap, and these connection holes 427 and 429 are fixed by screws or the like.

In addition, the iron plate bracket is formed with a chamber fixing hole, through which the iron plate bracket and the guide FT board 40 is fastened to the chamber wall surface.

Meanwhile, the burn-in board 12 is mounted on a burn-in board rack (not shown), and the burn-in board 12 is inserted into the burn-in board 12 by inserting the burn-in board 12 into the second pin 425 of the edge connector 420 to which the guide is fastened. The defect of the mounted semiconductor device is tested.

The FT board 40 may be provided with a circuit board part 410 consisting of three circuit boards, for example, and a circuit pattern is printed on each circuit board constituting the circuit board part 410. At this time, the auxiliary space portion 411 in which the circuit pattern is not printed is present between the circuit pattern printed portions formed on the adjacent circuit board. Therefore, the auxiliary space part 411 may be processed into the pupil 413.

As such, the current FT board 40 may be connected to the motherboard 30 by using various connectors, but the burn-in board 12 may be connected only through a designated connector, that is, an edge connector 420.

However, since the number of pins of the connector 420 for connecting with the burn-in board 12 is fixed, only the number of test control signals specified by the burn-in board 12 can be input, and thus the test control signals that can be input. There is a problem that can not increase.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and there is a technical problem to provide a feed through board that can increase the number of signals input from the FT board to the burn-in board.

Another technical problem of the present invention is to increase the number of signals supplied to the burn-in board without changing the configuration of the burn-in system.

The feed through board according to an embodiment of the present invention for achieving the above-described technical problem is a feed-through board including a circuit board portion formed with a plurality of circuit pattern printed portion, the circuit board portion, between the circuit pattern printed portion Auxiliary space portion provided in; And an expansion circuit pattern printing unit formed on at least one auxiliary space unit.

According to the present invention, more signals can be transmitted to the burn-in board without changing the configuration of the burn-in system, thereby improving test efficiency.

In addition, various functional tests of more semiconductor devices are possible in each test process.

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

4 is a configuration diagram of a feed through board according to an embodiment of the present invention.

As shown in the drawing, the FT board 50 according to the present invention includes an edge connector connected to one side of the circuit board portion 510 including the circuit pattern printing portions 510A, 510B, and 510C and the circuit board portion 510 ( 520).

The circuit board unit 510 may include a plurality of circuit boards, for example, three circuit boards, and a plurality of circuit pattern printing units 510A, 510B, and 510C are formed on each circuit board. In addition, the auxiliary space portion 511 is present between the circuit pattern printing portions 510A, 510B, and 510C.

In the present invention, the extended circuit pattern printing unit 513 is formed on the at least one auxiliary space 511 to transmit a greater number of signals to the burn-in board. The extended circuit pattern printing unit 513 formed on the auxiliary space 511 is connected to the burn-in board through at least one expansion connector 527.

More specifically, the edge connector 520 includes a main body 521, a first pin 523 protruding toward the back side of the main body 521, and a second extending from the first pin 523 toward the front side of the main body 521. Pin 525 and at least one expansion pin 527. In addition, when a plurality of circuit board portions 510 are formed, the edge connectors 520 are also configured in the same number and connected to each circuit board portion 510.

Here, the first fin 523 and the second fin 525 are integrally formed. One side of the expansion pin 527 protrudes toward the rear side of the main body 521 in the same form as the first pin 523, and the other side of the expansion pin 527 has the same shape as the second pin 525. 521 extends to the front side side.

The circuit pattern printing sections 510A, 510B, and 510C and the expansion circuit pattern printing section 513 are connected to the first pin 523 and the expansion pin 527 by soldering, respectively. In addition, holes 529 are provided at both ends of the edge connector 520 to fix the steel plate bracket (not shown) through the holes. To this end, the hole is formed in the iron plate bracket at a position corresponding to the hole formed in the edge connector 520, of course.

After the FT board 50 and the iron plate bracket are combined, the guide is fastened to the front surface of the edge connector 520 and then burned between the second pin 525 and the extension of the expansion pin 527 at the front of the main body 521. Insert

Here, as the expansion pin 527 is additionally installed, the guide and the iron plate bracket cannot be fixed at the front of the edge connector 520. Therefore, in the present invention, the guide and the iron plate brackets are fixed at predetermined positions above and / or below the guide, such that the edge connector 520 is fixed to the chamber.

5 is an exemplary view illustrating a fastening state of a feed through board and a guide according to the present invention.

5A to 5C show a state in which a guide is fastened to three edge connector front parts in an FT board including three circuit board parts.

First, in FIG. 5A, expansion pins are formed between the second and third edge connectors 520B and 520C, and expansion pins are formed between the first edge connector 520A and the second edge connector 520B. The case where this is not formed is shown.

After the guide 530 is fastened to the edge connector 520, the iron plate bracket and the guide 530 must be screwed, and both ends of the edge connector 520 and the first edge connector 520A and the second edge connector ( Since the expansion pin is not installed between the 520B, the steel plate bracket can be fixed through the first bracket fixing portion 532 formed on the guide 530 in the front portion thereof.

However, since the guide 530 and the iron plate bracket cannot be fixed at the front portion between the edge connectors 520B and 520C provided with the extension pins, the second bracket is fixed at a predetermined position above and / or below the guide 530. Install the government parts 534, 536 so that the guide 530 is fixed to the steel plate bracket.

FIG. 5B shows a structure similar to that of (a), but showing an extension pin installed between the first edge connector 520D and the second edge connector 520E.

Even in this case, the guide 540 may be fixed to the steel plate bracket by using the first bracket fixing part 542 between both ends of the edge connector 520 and the second and third edge connectors 520E and 520F. have. On the other hand, an extension pin exists between the first and second edge connectors 520D and 520E, so that the guide 540 cannot be fixed to the steel plate bracket at the front portion thereof. Therefore, the second bracket fixing parts 544 and 546 are installed on the upper side and / or the lower side of the guide 540 so that the guide 540 is fixed to the steel plate bracket.

FIG. 5C shows the connection between all adjacent edge connectors, that is, between the first edge connector 520G and the second edge connector 520H and between the second edge connector 520H and the third edge connector 520I. Each case shows an extension pin.

In this case, both ends of the edge connector 520 may be fixed to the iron plate bracket through the first bracket fixing portion 552 formed in the guide 550. However, since the guide 550 and the iron plate bracket cannot be fixed at the front of the connection portion between the respective edge connectors 520G, 520H, and 520I, the second bracket fixing portion at a predetermined position above and / or below the guide 550 is fixed. 554 and 556 are installed to fix the guide 550 to the steel plate bracket.

On the other hand, the other side of the circuit board 510, that is, the other side not connected to the edge connector 520, is connected to the motherboard by various connectors. Then, a burn-in board is inserted between the second pins 525 formed on the front side of the edge connector 520, so that the FT board 50 transmits signals from the motherboard to the circuit pattern printing sections 510A, 510B, and 510C. Received through the expansion circuit pattern printing unit 513 is delivered to the burn-in board.

A typical FT board includes three circuit pattern prints, each consisting of 86-100-86 pins with edge connectors that carry signals from each circuit pattern print to the burn-in board.

However, in the present invention, the expansion circuit pattern printing unit 513 is formed in at least one auxiliary space portion 511, and expansion pins 527 for connecting the expansion circuit pattern printing unit 513 and the burn-in board are provided. .

Accordingly, the number of pins 523 and 527 connected to the circuit pattern printing units 510A, 510B and 510C and the expansion circuit pattern printing unit 513 is 100-100-86 pins or 100-100-, for example. Can be increased to 100 pins.

That is, a 14-pin or 28-pin connector can be additionally installed than the existing FT board, and the number of signals that can be transmitted to the burn-in board by the increased number of connectors can be increased, thereby significantly improving test efficiency and speed.

Thus, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

The present invention further prints a circuit pattern printing unit in an auxiliary space which is an idle area between circuit pattern printing units in the FT board of the burn-in test system, and connects the added circuit pattern printing unit and the burn-in board through an expansion connector. Accordingly, the efficiency of the burn-in test can be maximized and the test speed can be improved.

1 is a schematic configuration diagram of a general burn-in test system,

2 is a perspective view of a typical feed through board,

3 is a view for explaining a fastening state of the feed through board and the guide shown in FIG.

4 is a configuration diagram of a feed through board according to an embodiment of the present invention;

5 is an exemplary view illustrating a fastening state of a feed through board and a guide according to the present invention.

Description of the Related Art [0002]

50: FT board 510: circuit board portion

510A, 510B, 510C: circuit pattern printing part 511: auxiliary space part

513: expansion circuit pattern printing section 520: edge connector

521: main body 523: first pin

525: second pin 527: expansion pin

Claims (5)

A feed-through board comprising a circuit board portion printed with a circuit pattern, The circuit board unit may include a plurality of circuit pattern printing units; And At least one auxiliary space part which is a connection area between the circuit pattern printing parts; And An expansion circuit pattern printing unit printed on the at least one auxiliary space unit; Feed through board containing. The method of claim 1, The feed through board further includes a connector connected to the circuit board part, And the connector includes at least one expansion pin connected to the expansion circuit pattern printing unit to transmit a signal transmitted to the expansion circuit pattern printing unit to a burn-in board. The method of claim 2, Feed connector board, characterized in that the connector is an edge connector. The method of claim 1, The circuit board portion, the feed-through board, characterized in that composed of one or a plurality of substrates. The method of claim 2, The feed through board is fixed to the iron plate bracket, Further comprising at least one guide fastened to the front portion of the connector, Feed through the board, characterized in that the guide is fixed to the iron plate bracket by at least one bracket fastening portion formed on the upper or lower side of the guide.

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