JPH051829Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a dynamic burn-in device used for IC burn-in tests, and facilitates the insertion and removal of burn-in boards into and out of ovens.

<Prior Art> A burn-in device is a device used to perform burn-in processing on an IC. Burn-in testing is widely performed to ensure complete quality control of manufactured ICs. produced in a factory
The IC is heated to 100℃ using a dynamic burn-in device.
Heating it to ~200℃ and transmitting various signals to each IC in this state.
and set the same environment as the actual working state,
Maintain this state for a long time. This is burn-in processing, and after that, each IC is subjected to a burn-in tester to compare the input and output of various test patterns to determine pass/fail or to perform screening without determination.

To perform burn-in processing, test IC
The manufactured ICs are inserted into a burn-in board that has multiple mounting sockets and can input various signals, and then lined up in the oven section of a dynamic burn-in device for burn-in processing.

As described above, the burn-in process is performed over a long period of time, so in order to increase the operating rate of the dynamic burn-in device, it is desirable to accommodate as many ICs as possible in one device. Therefore, it is necessary to accommodate a large number of burn-in boards in an orderly manner.

In addition, a signal supply socket for supplying signals to the burn-in board is located at the back of the oven in a position that matches the socket on the burn-in board side, and when the burn-in board is fully inserted,
A socket on the burn-in board side is connected to this signal supply socket, and signals are input to each IC socket. The signal supply socket and burn-in board side socket have a large number of connection pins in order to input signals to a large number of ICs, and in order to match these easily, it is necessary to accurately control the position of the burn-in board in the oven. and insert it.
Further, when removing the burn-in board from the oven, it is necessary to accurately control the position of the burn-in board in order to prevent excessive force from being applied to the socket. That is, the burn-in board needs to be in a state in which there is no unnecessary rattling in the horizontal and vertical directions within the oven.

To meet this requirement, conventionally, guide grooves having a U-shaped cross section were provided in the oven to face each other, and a burn-in board was inserted into the groove.

<Problems that the invention aims to solve> However, in such conventional ovens, in order to store a large number of bar-in boards in the oven, the vertical spacing between the bar-in boards is narrow, and in addition, the bar-in boards are The total insertion length of the burn-in board is long in order to accommodate many ICs. In such a state, the burn-in board must be inserted in line with the guide groove in the oven, making it extremely difficult to position the burn-in board with respect to the guide groove.

In addition, since the cross section of the guide groove is U-shaped and the overall length of the bar-in board insertion is long, contact resistance is large and a large force is required to completely insert the bar-in board all the way. It was also pointed out that the board could be damaged.

On the other hand, since a dynamic burn-in device maintains a constant temperature state using hot air, it is necessary to ensure a ventilation path within the device, and it is also necessary to provide a required air gap. Therefore, it is desirable that the guide groove has the minimum area necessary.

<Means for solving the problem> In other words, in order to simplify the use of the burn-in device and increase its efficiency, it is necessary to simplify the positioning of the burn-in board in the oven and reduce unnecessary resistance. It is necessary to make it easy to install the bar-in board by making it easy to put it in and take it out, to prevent wear and tear on the bar-in board, and to ensure a sufficient ventilation path.

Therefore, the burn-in device according to this invention is a burn-in device in which burn-in board supporting protrusions are arranged on the inner wall of the oven at desired intervals, except for the burn-in board supporting protrusions that are closest to the entrance. The upper one is composed of two upper and lower protrusions that are slanted upward and the lower one is slanted downward, and the one closest to the entrance is composed of only one protrusion that is slanted downward at the bottom. Among the burn-in board supporting protrusions, the protrusion closest to the entrance is used to position the burn-in board at the start of insertion, and the contact between the burn-in board and the burn-in board is a line contact, thereby making it possible to insert or remove the burn-in board. This is designed to reduce the resistance that sometimes accompanies movement.

<Example> Next, an example of the burn-in device according to the present invention will be described based on the drawings. 1 is a burn-in device main body, and 2 is an oven section. Reference numeral 3 denotes a burn-in board support protrusion provided opposite to the inner wall of the oven section 2. In this invention, the support protrusion 3 for the burn-in board is divided into those disposed closest to the entrance and those disposed other than that, and the latter are arranged as shown in Figs. 3 and 4. It is composed of two upper and lower protrusions 3', 3'', of which the upper protrusion 3' is formed to be inclined upward, and the lower protrusion 3'' is formed to be inclined downward. As shown in FIGS. 3 and 5, the former is provided with a piece formed in the same shape as the lower protrusion 3'' of the latter. This is intended to reduce the contact area of the burn-in board 3, reduce the resistance when the burn-in board 4 is taken in and out, and prevent wear and tear of the burn-in board 4 due to friction.

In the illustrated example, the protruding piece 3'' closest to the entrance is shown facing the same shape as the other protruding pieces 3'', but it is not shaped like this, but has a full length that crosses the frontage of the entrance. It may be provided over several periods. In this way, positioning at the time of insertion becomes even easier. Further, the ends of the projecting piece 3 are bent upward and downward, respectively, and the burn-in board 4 is bent upwardly and downwardly.
It is designed so that it does not become an obstacle when inserting.

The projecting pieces 3 are provided at intervals, but this is to ensure ventilation passages 5. In order to form the projecting pieces 3, a single plate is punched out as shown in Fig. 2. The ventilation passage 5 may be formed with a slight bend as shown in FIG. 3, which shows only the protruding piece 3 on an enlarged scale. Reference numeral 6 denotes a signal supply socket provided on the back surface of the oven section 2, and the signal supply socket 6 is arranged at a position that matches the socket of the burn-in board 4 when the burn-in board 4 is inserted along the protrusion 3. It has been set up.

<Function> Therefore, the burn-in board 4 is connected to the oven section 2.
Set inside. First, place the back part of the first burn-in board 4 horizontally on the lowest burn-in board support protrusion 3, then push it towards the back, and connect the socket of the burn-in board 4 to the signal supply socket. Insert into 6. Then, the burn-in boards 4 are sequentially placed on the burn-in board support protrusions 3 from the lower stage to the upper stage, and similarly pushed toward the back and set. In this way, burn-in boards are successively set on the upper stage. Since the protruding piece 3'' closest to the entrance/exit is designed to support the burn-in board 4 from below, the burn-in board 4 can be positioned at the time of insertion simply by placing it on this protruding piece 3''. Since the protrusions 3'' on the same level are at the same height, if the burn-in board 4 is placed on the protrusion 3'' and pushed in horizontally, the burn-in board 4 will be inserted into the inner protrusion 3 without difficulty. Since the position of the burn-in board is accurately regulated by the protruding piece 3, it can be connected to the signal supply socket 6 without any error and without difficulty. In addition, since the burn-in board support protrusion 3 has a small contact area with the burn-in board 4, the resistance when taking it in and out is small, so it is possible to prevent damage to the burn-in board 4 and to make the work of putting it in and taking it out smooth. Become.

<Effects of the invention> As described above, according to the burn-in device according to the invention, the burn-in board support protrusion closest to the entrance/exit part is configured to support the burn-in board from below, and the burn-in board is held inside the burn-in board. Since it is designed to be held in place, positioning when inserting the burn-in board is ensured, and
The burn-in board can be taken in and out smoothly, and damage to the burn-in board can be prevented, which has an extremely large practical effect.

[Brief explanation of drawings]

The drawings show an embodiment of the burn-in device according to this invention, and FIG. 1 is a perspective view of the burn-in device, FIG. 2 is an internal side view of the oven section, and FIG.
The figure is a partially enlarged view of FIG. 2, FIG. 4 is an end view taken along the line A-A, and FIG. 5 is an end view taken along the line B-B. 1... Burn-in device, 2... Oven section, 3
...Support protrusion for burn-in board, 3', 3''...
Projection piece, 4... Burn-in board, 5... Ventilation path,
6...Socket for signal supply.

Claims (1)

[Scope of utility model registration request] In a burn-in device in which burn-in board supporting protrusions are arranged at desired intervals on the inner wall of the oven, the upper one is placed upward, and the lower one is The top and bottom are slanted downwards.
A burn-in device characterized in that the burn-in device is composed of two projecting pieces, and the one closest to the inlet is composed of only one downwardly inclined projecting piece at the bottom.