JPH0868829A - Connecting device - Google Patents

Abstract

PURPOSE: To provide a connecting device in electrically contact with a material to be measured securely having the excellent characteristics in high frequency region. CONSTITUTION: A plurality of contacts 11 comprising rod-shaped elastic metal is held with a holding part 1 so that the leading tips are extruding into air and the base ends are exposed at the bottom surface. The contacts are in electrically contact with respective leads 52 of a material to be measured IC 51. A printed circuit board 2 has a pattern 21, which is individually formed at the position corresponding to each contact 11 exposed at the bottom surface. The holding part land the printed circuit board 2 are compressed and held with a holding part 3 and screws 4 so that the respective contacts 11 exposed at the bottom surface of the holding part 1 and a pattern 21 of the printed-circuit board 2 are brought into contact electrically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection device, and is particularly used for measuring and inspecting the operation of a manufactured integrated circuit device, and electrically connecting an object to be measured such as an integrated circuit device and a measurement test device. The present invention relates to a connection device to be connected to.

[0002]

2. Description of the Related Art Conventionally, this type of connecting device has a structure as shown in FIG. FIG. 5 shows a printed wiring board and its wiring pattern used as a connecting device. In FIG. 5A, reference numeral 51 denotes an integrated circuit device (hereinafter referred to as IC) whose operation is measured and inspected as an object to be measured, 52
Is a plurality of leads (terminals) connected to the circuit in the IC 51 and provided at equal intervals for inputting and outputting various signals, and 53 is formed of Cu or the like on the printed wiring board 54.
2 is a wiring pattern for connecting a circuit in the IC 51 and a measurement / testing device (not shown) by making electrical contact with 2.

Further, in FIG. 5B, 55A, 55
B is an arm for holding the IC 51 from above and below, 56 is an insulator for pressing the lead 52 against the pattern 53,
57 is a holding table for holding the printed wiring board 54,
When actually testing the operation of the IC 51, each lead 5
The IC 51 is held by the arms 55A and 55B at the position where 2 and the pattern 53 provided corresponding thereto are held, and the lead 52 is pressed against the pattern 53 by the insulator 56, so that the lead 52 and the pattern 53 Is to ensure electrical contact.

Further, FIG. 6 shows that the connection is made by a contact having elasticity. In FIG. 6, 61 is C
A contact made of a metal plate such as u-Be alloy and having elasticity by a U-shaped structure and electrically connecting each lead 52 and the measurement test device, and 62 is an insulating material such as plastic having a plurality of slits 62A The slit portion 62 </ b> A is made of resin and a plurality of contacts 61 corresponding to the leads 52 are provided.
Is a holding unit for holding.

The contact 61 includes a base portion 61A and a terminal portion 61.
B, elastic portion 61C, arm portion 61D, and contact portion 61E, which are held on the bottom of the slit portion 62A by the base portion 61A and the terminal portion 61B, and the lead 52 is pressed against the upper surface of the contact portion 61A. In this case, the arm portion 61D and the contact portion 61E can be moved vertically with the elastic portion 61C as a fulcrum. As a result, each lead 52
Comes into electrical contact with the contact portion 61E by an appropriate elastic force, for example, an elastic force of 30 to 50 g, and is connected to the measurement test device via the terminal portion 61B.

Further, FIG. 7 shows a structure in which the lead and the pattern are connected to each other through an S-shaped contactor. In FIG. 7, 71 is a contact made of an S-shaped metal plate such as Cu-Be alloy, 73 is a holding portion made of an insulating resin such as plastic having a plurality of slits 73A,
72A and 72B are made of a columnar elastic material such as rubber having elasticity in a direction orthogonal to the axial direction, and all the contacts 7
1 and a shaft penetrating the slit portion 73A, and 74 is a pattern which is formed of Cu or the like on the printed wiring board 75 and electrically connects with each lead 52 to connect the circuit in the IC 51 and the measurement test device. .

The contact 71 has a lead contact portion 71A which comes into contact with the lead 52 and a pattern contact portion 71B which comes into contact with the pattern 74, and is usually held in the slit portion 73A by the shafts 72A and 72B. In particular, the pattern contact portion 71B is pressed against the pattern 74 by the elastic force of the shaft 72B about the shaft 72A. When the lead 52 is pressed against the upper surface of the contact portion 71A, the contact 71
With the shaft 72B as an axis, the lead contact portion 71A and the lead 52 are brought into contact with each other by the elastic force of the shaft 72A, whereby each lead 52 is electrically connected to the lead contact portion 71A of each contact 71 by an appropriate elastic force. In addition to being in contact, the pattern contact portion 71B electrically contacts each pattern 74 by an appropriate elastic force, and each lead 52 is connected to the measurement test device via the contact 71 and the pattern 74.

[0008]

Therefore, in such a conventional connecting device, according to the method of directly contacting the lead 52 of the IC 51 with the pattern 53 on the printed wiring board 54 shown in FIG. Since the abrasion of the pattern 53 is caused by the cutting edge of 52, the printed wiring board 54
Has a problem that the life of the lead is shortened, and it is not possible to deal with the deformation of the lead 52 and the variation in the up and down, which causes the contact failure. Further, according to the method of connecting with the U-shaped contactor 61 shown in FIG. 6, since the distance from the terminal portion 61B to the contact portion 61E is long, the arm portion 61D or the like becomes an antenna or an adjacent contact portion. There is a problem that the capacitance component between the child 61 increases the influence of noise particularly in a high frequency region, and the measurement accuracy decreases.

Further, according to the method of connecting by the S-shaped contact 71 shown in FIG. 7, the contact portions 71A,
Since the connection is likely to occur via 71B, contact failure is likely to occur, and in particular, the pattern 74 and the contact portion 71B each time measurement is performed.
There is a problem that rubbing occurs between the printed wiring board 75 and the printed wiring board 75 and the life of the printed wiring board 75 is shortened. The present invention is intended to solve such a problem, and an object of the present invention is to provide a connection device that reliably makes electrical contact with an object to be measured and has excellent characteristics in a high frequency region.

[0010]

In order to achieve such an object, a connecting device according to the present invention is made of a rod-shaped metal having a predetermined elasticity, and is electrically connected to each terminal of an object to be measured during a measurement test. A plurality of contacts that come into contact with, and a holding portion that is made of an electrically insulating material and that holds the base end of the contact so that its base end is exposed at the bottom while it is pressed to the bottom. A printed wiring board having a pattern individually formed at a position corresponding to each contact exposed on the bottom surface, and a holding portion so that each contact exposed on the bottom and the pattern electrically contact with each other. Holding means for pressing and holding the printed wiring board. Further, the contactor has a rectangular cross section, and the holding portion is
The base end of the contact is adhesively held on the bottom surface.

[0011]

Therefore, the holding means electrically contacts the contact exposed on the bottom surface of the holding part with the pattern of the printed wiring board, and the terminal of the DUT contacting the tip of the contact protruding into the air is It is connected to a test and measurement device via a contactor and a pattern.

[0012]

Next, the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a connection device according to an embodiment of the present invention. In FIG. 1, reference numeral 11 is made of a metal such as Cu—Be alloy, and the tip thereof is electrically connected to the lead of an object to be measured in the air. A contactor having a rectangular prism cross section which comes into contact with the contactor 1 has a pair of guide holes 12 and a pair of mounting holes 13 respectively.
The holding portion 2 that holds the base end of the contactor 11 so that the tip of the contactor projects into the air has a pair of guide holes 22, and a plurality of wirings corresponding to each contactor 11 are provided on the surface facing the holding portion 1. Printed wiring board having a pattern 21 for use, 3 is 1
It is a holding part having a pair of guide pins 31, and the holding part 3 and the screw 4 constitute a holding means.

The pattern 21 of the printed wiring board 2 has a contact portion 21A for electrically contacting the contactor 11 at one end and a land to which a wiring to a measurement / inspection device (not shown) is soldered at the other end. 21B. The contactor 11 is the holding unit 1.
Is bonded and held so as to be exposed at the bottom surface of the printed wiring board 2, that is, the guide pin 31 of the holding portion 3 through the pair of reference holes 22 of the printed wiring board 2 and the pair of guides of the holding portion 1. Inserted in the hole 12 and a pair of screws 4
Is screwed into a holder (not shown) through the hole 13 of the holder 1 and the hole 32 of the holder 3, and is firmly held between the bottom surface of the holder 1 and the pattern 21 of the printed wiring board 2. .

As a result, the portion of the base of the holding portion 1 of each contact 11 exposed as a base end, that is, the pattern contact portion 1 is exposed.
1A and the corresponding end portions 21A of the pattern 21 are in close contact with each other and electrically contact with each other, and the leads of the object to be measured electrically contact with the tip end portions of each contactor 11 protruding into the air, that is, the lead contact portions 11B. The object to be measured is held as described above, and the lead of the object to be measured is connected to the measurement test device via the lead contact portion 11B of the contactor 11, the pattern contact portion 11A, the end portion 21A, the land 21B, and the wiring. Becomes

The printed wiring board 2 uses a material having a low dielectric constant as a base material, and the length of each pattern 21 is
That is, the lengths from the contact portion 21A to the land 21B are substantially equal to each other and are matched with predetermined impedances. As a result, the width of the pattern can be increased without increasing the capacitance between the adjacent patterns, the direct current resistance from the contact portion 21A to the land 21B can be reduced, and a high frequency signal is used during the measurement test. Even in such a case, the influence of noise between adjacent patterns can be suppressed.

FIG. 2 is a side view of the vicinity of the contact 11 when the holding portion 1, the printed wiring board 2 and the holding portion 3 are attached to the holding base 58 with the screws 4. End 21A of pattern 21 formed on printed wiring board 2 and contact 1
The first pattern contact portion 11A is pressed by the holding portion 1 and the holding portion 3 and is in electrical contact. Further, 51 is an IC to be measured, and 52 is a lead thereof, and the IC 51 is held at an optimum position by an arm (not shown) during a measurement test.

In this case, the contactor 11 is connected to the holding parts 1 to 3 to 3.
Since it is projected and held about 6 mm, the contact 11
The lead contact portion 11B and the lead 52 are in electrical contact with each other by an appropriate elastic force, and stable electrical contact is obtained. As a result, each lead 52 of the DUT IC 51 is electrically connected to a measurement test device (not shown) via the lead contact portion 11B of the contact 11, the pattern contact portion 11A, the contact portion 21A of the pattern 21, and the land portion 21B. Will be connected.

3A and 3B are perspective views of the contactor 11 and the holding portion 1 for holding the contactor 11 as seen from the bottom surface side. FIG. 3A shows the completed assembly, and FIG. 3B shows the assembled state. 11C is
It is a contactor plate that holds the contactor 11 from both ends around the center, and has a pair of holes 11D for positioning. The contactor plate 11C is made of a metal plate such as a Cu—Be alloy having a thickness such that the contactor 11 has an appropriate elastic force, for example, a thickness of about 0.2 mm.
It is produced by removing parts other than 1 and the parts necessary for its assembly by various processing methods such as an etching process and a pressing process.

Numeral 14 is a sheet-like adhesive having thermosetting property. After the adhesive 14 is attached to the portion of the holding portion 1 where the contact 11 is adhered and held, the positions of the guide hole 12 and the hole 11D are changed. Contact plate 11C to match each other
3 is adhered to the adhesive 14, and the vicinity of the adhesive 14 is heated and cured, and then the contact plate 11C is cut while leaving a portion to be the contact 11 to complete the contact assembly shown in FIG. To do. As a result, the contactor 11 can be accurately held so as to be projected in the air at a slight pitch, for example, a pitch of about 0.5 mm, and to be exposed at the bottom surface of the holding portion 1 without requiring a complicated and expensive process. In addition, the adhesive does not adhere to the pattern contact portion 11A of each contactor 11, and contact failure due to this can be suppressed.

FIG. 4 is an explanatory diagram showing a measurement test using the connection device of the present invention. In the figure, 55A, 55B
Is an arm for holding the IC to be measured 51 from above and below,
Reference numeral 56 indicates an insulator for pressing the lead 52 against the contact 11, and reference numeral 58 indicates the holding portion 1, the contact 11, the printed wiring board 2 and the holding portion 3 at a predetermined angle according to the angle of the end portion of the lead 52 of the IC 51. Is a holding base for holding with the screw 4, and 59 is a wiring for connecting each pattern 21 on the printed wiring board 2 and a measurement test device (not shown).

When actually testing the operation of the IC 51, the arms 55A and 55B hold the IC 51 at a position where each lead 52 and the contactor 11 provided corresponding thereto are brought into contact with each other, and the leads are held. The insulator 52 presses the contact 52 against the contact 11 held at an angle substantially equal to the angle of the tip of the lead 52. As a result, the lead 52 and the contact 11 can be reliably brought into electrical contact with each other by the elastic force of the contact 11, and the length of the contact 11 can be made relatively short so that the distance between the adjacent contact 11 is small. Can reduce the capacity of
It is possible to obtain excellent characteristics in a high frequency range, and it is possible to easily replace the contact 11 and the holding portion 1 even if the contact 11 is worn due to contact with the lead 52.

In the above description, the case where the holding portion 1 holds the contact 11 by adhesion has been described, but this is made of resin such as plastic.
At the time of molding, the tip end of the contactor 11 may be projected and held, and the base end may be held so as to be exposed at the bottom surface of the holding portion 1, and the same operational effect as described above is obtained.

[0023]

As described above, according to the present invention, a plurality of contacts made of a rod-shaped metal having a predetermined elasticity are held so that the tip ends protrude into the air and the base ends are exposed on the bottom surface. At the same time, the contacts and the printed wiring board are pressed and held so that the contacts exposed on the bottom surface and the pattern of the printed wiring board are in electrical contact with each other. The elasticity of the contactor allows the contactor to be surely brought into electrical contact with each other, and the length of the contactor can be made relatively short to reduce the capacitance between adjacent contactors. Excellent characteristics can be obtained, and even if the contact wears due to contact with the terminal, the contact and the holder can be easily replaced. Also, the contactor has a rectangular cross-section, and the holding part holds the base end of the contactor by adhesively holding it to the bottom surface.Therefore, no complicated steps are required, and the tip end protrudes into the air, and the base end It becomes possible to hold accurately with a slight pitch so as to be exposed to.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a connection device according to an embodiment of the present invention.

FIG. 2 is a side view of a connection device according to an embodiment of the present invention.

FIG. 3 is a perspective view of a contactor and a holding portion.

FIG. 4 is an explanatory diagram showing a measurement test using the connection device of the present invention.

FIG. 5 is an explanatory diagram showing a conventional connecting device.

FIG. 6 is an explanatory view showing another conventional connecting device.

FIG. 7 is an explanatory diagram showing another conventional connecting device.

[Explanation of symbols]

1 ... Holding part, 11 ... Contact, 11A ... Lead contact part, 1
1B ... Pattern contact part, 2 ... Printed wiring board, 21 ... Pattern, 21A ... Contact part, 21B ... Land, 3 ... Holding part, 4
... screw, 51 ... integrated circuit device (measurement object), 52 ... lead (terminal).

Claims (2)

[Claims] 1. A connection device for electrically connecting an object to be measured, such as an integrated circuit device, and a measurement test device, which is made of a rod-shaped metal having a predetermined elasticity, and each terminal of the object to be measured is subjected to a measurement test. A plurality of contacts that make electrical contact with each other, an electrical insulator, and a holding portion that holds the base end of the contact so as to be exposed at the bottom and the bottom end of the contact protruding to the air. When the printed wiring board having a wiring pattern individually formed at a position corresponding to each of the contacts exposed on the bottom surface, each of the contacts and the wiring pattern exposed on the bottom surface, respectively. A connection device comprising: a holding unit that presses and holds the holding unit and the printed wiring board so as to make electrical contact. 2. The connecting device according to claim 1, wherein the contactor is a quadrangular prism in cross section, and the holding portion adheres and holds the base end of the contactor to the bottom surface. .