JPH08105936A - Inspection socket device for electronic part - Google Patents

Abstract

PURPOSE: To electrically connect external lead terminals at an electronic part securely without generating deformation in the case of detachably installing the electronic part on an inspection socket for inspecting its performance. CONSTITUTION: A soft resilient body 12 is provided on an upper surface of a socket main body 11, a contact electrode 14a with which each external lead terminal A2 of an electronic part A gets in contact is provided on an upper surface of a flexible circuit board 14 disposed on an upper surface of the soft resilient body 12, a wiring circuit 14c is formed to each contact electrode 14a, and in addition, a presser body 16 to press each external lead terminal downward in the electronic part A is disposed above the socket main body 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component such as an LSI in which a semiconductor element portion is packaged in a synthetic resin mold portion so that external lead terminals for the semiconductor element protrude from the side surfaces of the mold portion. In regard to the performance inspection of this electronic component, the present invention relates to an inspection socket device for detachably mounting the electronic component.

[0002]

2. Description of the Related Art Generally, when manufacturing an electronic component such as an LSI, at the final stage, it is mounted on an inspection socket and each external lead terminal is energized to inspect its performance. Done. A conventional inspection socket device used for this inspection is described in, for example, Japanese Utility Model Publication No. 4-50544, and as shown in FIGS. 7 and 8, a socket body 1 made of an insulating material such as synthetic resin. A large number of contact pieces 2 whose tip 2a is bent and deformed by a metal plate having a spring property is mounted therein, and each contact piece 2 is fixed to a male pin 3 protruding from the contact piece 2. Each of the external lead terminals A2 protruding from the mold portion A1 of the electronic component A on the upper surface side of the socket body 1 is connected to a performance inspection device (not shown) by being inserted into the connector 4. Is supplied so as to contact the upper surface of the tip 2a of the contact piece 2,
The external lead terminals A2 of the electronic component A are configured to be electrically connected to the contact pieces 2 for each by pressing downward with the pressing member 5.

[0003]

However, in the conventional inspection socket device, as described above, the tip end portion 2a of each contact piece 2 made of a metal plate having a spring property is a free end which can be flexibly deformed. Then, the external lead terminals A2 of the electronic component A are brought into contact with the upper surface of the distal end portion 2a and pressed downward, so that the distal end portions 2a of the contact pieces 2 are attached to the upper surface of the electronic component A. When the external lead terminal A2 is contacted and pressed downward, the external lead terminal A2 is likely to be twisted and deformed or laterally displaced and deformed, so that an electrical contact failure occurs between the external lead terminal A2 and the external lead terminal A2. Or, an electrical short-circuit occurs between the adjacent contact pieces 2 and an uninspectable situation frequently occurs, and further, following the twist deformation or the lateral displacement deformation of the contact pieces 2. Electronic External lead terminal A in goods A
There was a problem that 2 was frequently deformed.

In addition, in the conventional inspection socket device, in addition to using a large number of metal plate contact pieces 2 having a spring property, the socket body 1 is also equipped with the large number of contact pieces 2. Because the structure is complicated by
Another problem is that the manufacturing cost is significantly increased and the cost is extremely high. An object of the present invention is to provide a test socket device that solves these problems.

[0005]

In order to achieve this technical object, the present invention discloses that "a soft elastic body is provided on the upper surface of a socket body, and a flexible circuit board is arranged on the upper surface of the soft elastic body. The flexible circuit board is provided with a large number of contact electrodes on the upper surface of which the respective external lead terminals of the electronic component come into contact, a wiring circuit is formed for each of the contact electrodes, and further above the socket body, A pressing body for pressing the external lead terminals of the electronic component downward is provided. "

[0006]

[Operation] In this configuration, each external lead terminal of the electronic component placed on the upper surface of the flexible circuit board is
By pressing downward with the pressing body, each of the external lead terminals can be electrically connected to each contact electrode formed on the upper surface of the flexible circuit board. For each of the lead terminals,
Electricity can be supplied through the wiring circuit on the flexible circuit board.

In this case, since the lower surface side of the flexible circuit board is supported by the soft elastic body provided on the upper surface of the socket body, each contact electrode formed on the upper surface of the flexible circuit board is Even when an external lead terminal in an electronic component is pressed against the contact electrode, it is possible to prevent the torsional deformation and the lateral lateral deformation like the conventional metal plate contact piece having a spring property. The soft elastic body supporting the circuit board and the lower surface thereof can surely prevent the circuit board, and elasticity of the soft elastic body can provide a stable contact state between each contact electrode and each external lead terminal. You can do it.

[0008]

As described above, according to the present invention, the performance inspection of the electronic component can be surely performed under the condition that the deformation of each external lead terminal in the electronic component can be greatly reduced. Therefore, it is possible to significantly reduce the occurrence of inability to inspect. Moreover, as in the conventional case,
Since the flexible circuit board is used without using a large number of metal plate contact pieces, there is an effect that it can be provided at a price that is not comparable to the conventional one.

In particular, as in "claim 2,""a flexible elastic body is provided on both upper and lower surfaces of the socket body, while a flexible board is fitted on the side surface of the socket body, and the flexible circuit board further has a holder. The flexible circuit board is mounted on the socket body, and the flexible circuit board has a large number of external lead terminals of the electronic component that are in contact with the upper surface of one end portion on the upper surface side of the socket body. While forming individual contact electrodes,
An auxiliary socket body disposed below the socket body, on the lower surface of the other end portion of the lower surface of the socket body, formed with a connection electrode electrically connected to each of the contact electrodes via a wiring circuit. While providing a contact pin for each of the connection electrodes, a pressing body for pressing each external lead terminal of the electronic component downward is provided above the socket body. In addition to the effects described above, each external lead terminal in the electronic component is connected to each contact electrode in the flexible circuit board, and each auxiliary electrode is connected to each connection electrode in the flexible circuit board in the auxiliary socket body. There is an effect that the flexible circuit board can be mounted and replaced very easily under the condition that the contact pins can be surely connected.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings of FIGS. In the figure, reference numeral 11 indicates a flat plate rectangular socket main body. The socket main body 11 has soft elastic bodies 12 such as silicone rubber embedded on both left and right sides on its upper surface, and on both left and right sides on its lower surface. A soft elastic body 13 such as silicon rubber is embedded.

Reference numeral 14 designates flexible circuit boards arranged on both the left and right sides of the socket body 11. The flexible circuit boards 14 have a large number of contact electrodes 14a at one end thereof and the contact electrodes 14a at the other end thereof. The same number of connection electrodes 14b as the contact electrodes 14a are formed so that the respective contact electrodes 14a and the connection electrodes 14b are exposed on the surface, and the contact electrodes 14a and the connection electrodes 14b are connected to each other. Wiring circuit 14 for electrically connecting each other
c is formed.

Both the flexible circuit boards 14 are bent laterally in a U shape, and in this state, the socket body 11
On both left and right sides of the flexible circuit board 14
Is detachably fitted so that one end of each of the flexible elastic boards 12 on the upper surface of the socket body 11 abuts on the other soft elastic body 13 of the lower surface of the socket body 11. Then, the flexible circuit board 14 is detachably attached to the socket body 11 by detachably fitting a holder 15 formed in a U-shaped cross section.

Then, both of the flexible circuit boards 14
The electronic component A is placed on the upper surface of one end of the electronic component A so that each of the external lead terminals A2 protruding from the left and right sides of the mold portion A1 of the electronic component A comes into contact with the contact electrode 14a. The lead terminal A2 is configured to be pressed downward by the pressing body 16 arranged above it.

On the other hand, below the socket body 11,
This auxiliary socket body 1 is provided with the auxiliary socket body 17.
A large number of contact pins 18 are projected on the upper surface of 7, and the tips of the contact pins 18 are connected to the flexible circuit boards 1
4 is configured to abut on each of the connection electrodes 14b at the other end of the connector 4, while a male pin 19 from each of the contact pins 18 is projected from the lower surface of the auxiliary socket body 17, By inserting each male pin 19 into the connector 20 fixed by appropriate means, the auxiliary socket body 17 is supported by the connector 20, and each male pin 19 in the auxiliary socket body 17 is electrically connected to the performance inspection device. Connect to each other.

In this structure, the external lead terminals A2 of the electronic component A placed on the upper surfaces of the one ends of the both flexible circuit boards 14 are pressed downward by the pressing body 16 so that the external lead terminals A2 of the respective external lead terminals A2 are pressed. Each of them is pressed downward with respect to each contact electrode 14a formed on the upper surface of one end of each of the flexible circuit boards 14 to be electrically connected, and at the other end of each of the flexible circuit boards 14. Each of the connection electrodes 14b is pressed downward against each of the contact pins 18 of the auxiliary socket body 17 to be electrically connected.

In other words, each of the external lead terminals A2 in the electronic component A is connected to both the flexible circuit boards 1.
4, the performance of the electronic component A can be inspected because it is connected to the performance inspection device via the auxiliary socket body 17 and the connector 20. In this case, since one end of each of the flexible circuit boards 14 is supported by the soft elastic body 12 provided on the upper surface of the socket body 11, each contact formed on the upper surface of the one end of the flexible circuit board. The electrode 14a is connected to the external lead terminal A2 of the electronic component A with respect to the contact electrode 14a.
Even if the flexible circuit board 14 is pressed, the flexible circuit board 14 can be twisted or deformed laterally.
And the soft elastic body 12 supporting the lower surface thereof can be surely blocked, and the elasticity of the soft elastic body 12 provides stable contact between the contact electrodes 14a and the external lead terminals A2. Can be done.

Further, since the other end portions of both the flexible circuit boards 14 are also supported by the soft elastic body 13 provided on the lower surface of the socket body 11, the other end portions of the flexible circuit board 14 are provided on the lower surface. Each formed connection electrode 1
Even if the contact pin 18 of the auxiliary socket body 17 is pressed against the connection electrode 14b, the reference numeral 4b allows the flexible circuit board 14 and its rear surface side to be twisted and deformed and laterally displaced and deformed. The soft elastic body 13 that supports the
The elasticity of the soft elastic body 13 makes it possible to obtain a stable contact state between each connection electrode 14b and each contact pin 18.

By the way, in the above-described embodiment, the flexible circuit board 14 is bent laterally into a U shape and fitted on the side surface of the socket body 11, and then the holder 15 is fitted on the side surface of the socket body 11. 11
Can be attached to the holder 15
Since the flexible circuit board 14 can be detached from the socket body 11 by removing, the flexible circuit board 14 can be attached very easily, and the flexible circuit board 14 can be replaced very easily. .

Although the above-mentioned embodiment shows the case where the two flexible circuit boards 14 are used, the present invention is not limited to this, and one flexible circuit 14 'is used as shown in FIG. , This flexible circuit board 14 '
In addition, each contact electrode 14a 'is formed on the surface of one end thereof and each connection electrode 14b' is formed on the surface of the other end thereof, and each contact electrode 14a 'and each connection electrode 14 are formed.
Wiring circuit 14 for electrically connecting b'to each other
It may be configured to have c'formed therein.

Further, as in the above-mentioned embodiment, the other end portions of the flexible circuit boards 14 and 14 'are
Instead of connecting to the connector 20 on the performance inspection device side via the auxiliary socket body 17, the other ends of the flexible circuit boards 14 and 14 'are directly connected to the performance inspection device or the performance inspection device. The present invention may be configured to be connected to the connector 20 on the device side. Further, the present invention is an electronic component in which external lead terminals are projected from one side surface of the mold part, or the external parts are externally exposed from all side surfaces of the mold part. It goes without saying that the present invention can also be applied to electronic components having lead terminals protruding.

Furthermore, in the above embodiment, the flexible circuit boards 14 and 14 'are connected to the contact electrodes 14a and 14a' thereof.
And the connection electrodes 14b and 14b 'are electrically connected to each other by forming wiring circuits 14c and 14c' between the two layers, thereby forming the flexible circuit boards 14 and 14 '. When attaching the holder 15 to the socket body 11, the wiring circuit 14c,
In this case, the flexible circuit boards 14 and 14 'are connected to the socket body 11
In the case where the holder 15 to be mounted on the flexible circuit boards 14 and 14 'is made of an insulator,
The wiring circuits 14c and 14c 'may be exposed on the surface.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention.

FIG. 2 is a plan view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view of an exploded state.

FIG. 6 is a perspective view showing another embodiment of the present invention.

FIG. 7 is a vertical sectional front view showing a conventional example.

FIG. 8 is a plan view of FIG.

[Explanation of symbols]

 11 Socket Main Body 12, 13 Soft Elastic Body 14 Flexible Circuit Board 14a Contact Electrode 14b Connection Electrode 14c Wiring Circuit 15 Holder 16 Holding Body 17 Auxiliary Socket Body 18 Contact Pin 19 Male Pin 20 Connector A Electronic Component A1 Electronic Component Molding Part A2 External lead terminals for electronic components

Claims (3)

[Claims] 1. A soft elastic body is provided on an upper surface of a socket main body, and a flexible circuit board is disposed on the upper surface of the soft elastic body. The flexible circuit board has an upper surface of each external lead terminal in an electronic component. A large number of contact electrodes that are in contact with each other are provided, a wiring circuit is formed for each contact electrode, and a pressing body that presses down each external lead terminal of the electronic component is arranged above the socket body. A socket device for inspecting electronic parts, which is characterized by being installed. 2. A flexible circuit board is fitted on the upper and lower surfaces of the socket body, while a flexible board is fitted on the side surface of the socket body, and a holder is further fitted on the flexible circuit board. Is mounted on the socket body, and the flexible circuit board is formed with a large number of contact electrodes with which each of the external lead terminals of the electronic component contacts, on the upper surface of one end on the upper surface side of the socket body. On the lower surface of the other end portion on the lower surface side of the socket body, a connection electrode electrically connected to each of the contact electrodes via a wiring circuit is formed, and an auxiliary socket body arranged below the socket body is formed. Provides a contact pin for each of the connection electrodes, while facing down each external lead terminal of the electronic component above the socket body. Test socket apparatus for electronic components, characterized in that arranged the pressing body for pressing. 3. The "claim 2" according to claim 2, characterized in that the flexible board is bent in a U-shape in a lateral direction and fitted on a side surface of the socket board, and the holder is formed in a substantially U-shaped cross section. Socket device for inspection of electronic parts.