JPH04265871A - Burn-in chamber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burn-in chamber for burning in ICs, and more particularly to a positioning guide for positioning burn-in boards when connecting a plurality of burn-in boards to a connector.

0002

[Prior Art] When performing a burn-in test on a large number of semiconductor chips mounted on a burn-in board at once, it is recommended to set the burn-in board perpendicular to the ground in view of the space occupancy rate of the burn-in equipment. It is taken.

FIG. 3(a) is a perspective view showing the positional relationship between the burn-in chamber and the burn-in tester in a burn-in device of the type in which the burn-in board is housed perpendicular to the ground, and FIG. 3(b) is a perspective view showing the positional relationship between the burn-in chamber and the burn-in tester. This is a partial cross-sectional perspective view showing a burn-in board carrier. In the figure, 4 is a burn-in board set perpendicular to the ground, 5 is a connector connected to the burn-in board 4 to send a signal waveform during testing, and 6 1 is a burn-in board carrier capable of storing a plurality of burn-in boards 4, 7 is a slot in the burn-in board carrier 6, 8 is a burn-in chamber in which the burn-in board carrier 6 is set, and 9 is a burn-in tester.

FIG. 4 shows a conventional burn-in chamber 8.
A cross-sectional side view showing the burn-in board insertion part in the
In the figure, 2 is a burn-in board reference plane, and 3 is a positioning guide for accurately inserting the burn-in board 4 into the burn-in chamber 8.

Next, the operation will be explained. First, a desired number of burn-in boards 4 are stored in advance in each slot portion 7 in the burn-in board carrier 6 so as to be perpendicular to the ground, and the burn-in board carrier 6 is set in the burn-in chamber 8. When performing a burn-in test, the plurality of stored burn-in boards 4 are automatically positioned in the vertical direction by the reference plane 2 provided at the bottom of the burn-in chamber 8 and the positioning guide 3, and then the corresponding connectors 5 are connected to.

[0006]

[Problem to be Solved by the Invention] Since the conventional burn-in chamber is constructed as described above, the reference surface 2 is worn down by the own weight of the burn-in board 4 due to repeated insertion and removal of the burn-in board 4, resulting in poor positioning accuracy. Due to the deterioration, the accuracy of the connection between the burn-in board 4 and the connector 5 deteriorates, resulting in a problem that it becomes difficult to accurately send a signal waveform from the connector 5 to the burn-in board 4 during a burn-in test.

The present invention was made to solve the above-mentioned problems, and even when the burn-in board is repeatedly inserted and removed, the reference surface does not wear out, and a highly accurate connection between the burn-in board and the connector can be achieved. The purpose is to obtain a burn-in chamber that can be positioned.

[0008]

[Means for Solving the Problems] The burn-in chamber according to the present invention includes a bearing as a positioning guide that determines the vertical direction of the burn-in board when the burn-in board is connected to the driver.

[0009]

[Operation] In the burn-in chamber of this invention, the positioning guide is composed of a bearing, so even if the burn-in board is repeatedly inserted and removed, the reference surface will not wear out, and highly accurate positioning between the burn-in board and the connector is possible. become.

0010

[Embodiment] FIG. 1 is a partially enlarged view of the burn-in board carrier shown in FIG. 3 according to an embodiment of the present invention, and FIG. 2 shows a burn-in board insertion part in a burn-in chamber according to an embodiment of the present invention. In the figures, the same reference numerals as in FIGS. 3 and 4 indicate the same parts, and 1 is a bearing type positioning guide for vertically positioning the burn-in board.

Next, the operation will be explained using FIGS. 1 to 3. Each slot 6 in the burn-in board carrier 6
A desired number of burn-in boards 4 are stored in advance so as to be perpendicular to the ground in a burn-in board carrier 6.
After being set in the burn-in chamber 8, the vertical positioning is automatically performed by the reference surface 2 provided at the bottom of the burn-in chamber 8 and the bearing-type positioning guide 1, and the connectors 5 are accurately connected to the corresponding connectors 5. Ru.

0012

[Effects of the Invention] As described above, according to the present invention, vertical positioning when connecting a burn-in board is performed using a bearing-type guide, so even if insertion and removal are repeated, the reference surface will be worn down by the weight of the burn-in board. This has the effect that highly accurate positioning can be obtained semi-permanently without any problems, and that accurate connection with the connector can be made.

[Brief explanation of the drawing]

FIG. 1 is a partially enlarged view of the burn-in board carrier shown in FIG. 3, according to an embodiment of the present invention.

FIG. 2 is a cross-sectional side view showing a burn-in board insertion portion within a burn-in chamber according to an embodiment of the present invention.

FIG. 3(a) is a perspective view showing the positional relationship between a burn-in chamber for performing a burn-in test and a burn-in tester, and FIG. 3(b) is a partially sectional perspective view showing a burn-in board carrier in the burn-in chamber.

FIG. 4 is a cross-sectional side view showing a burn-in board insertion portion within a conventional burn-in chamber.

[Explanation of symbols]

1 Bearing type positioning guide 2 Burn-in board reference surface 3 Positioning guide 4 Burn-in board 5 Connector 6 Burn-in board carrier 7 Slot 8 Burn-in chamber 9 Burn-in tester

Claims (1)

[Claims] 1. A burn-in board for connecting a plurality of burn-in boards to a connector on a burn-in tester side corresponding to the plurality of burn-in boards in a burn-in chamber of a type in which a plurality of burn-in boards are housed perpendicular to the ground. A burn-in chamber characterized by a positioning guide composed of bearings.