JP2001305184A - Electric connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leak or jump-in of high frequency wave. SOLUTION: In a housing 110 of an electric connector 100, a recess opened below is provided, and in the recess, the end part 121b of a contact 120 is pressed downward to an electronic circuit substrate 400 by an elastomer 130. If the lead 210 of IC 200 is pushed to the end part 121a of the contact 120, spring effect of the contact 310 is given by the elasticity of the elastomer 130 and the IC 200 is stably installed. The housing 110 is formed with conductive material, connected to GND and functions as shield of the contact 120. Electric contact is surely prevented with an insulative sheet 141 having insulation and insulativs elastomer 142 between the housing 110 and the contact 310 and the electronic circuit substrate 400 except for the locations where contact is necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector, and more particularly, to an electrical connector for electrically connecting an electrode of a device under test to an electrode portion formed on an electric circuit board surface.

[0002]

2. Description of the Related Art Conventionally, in a product inspection (measurement) process of a semiconductor manufacturing process, a semiconductor integrated circuit to be inspected (hereinafter, referred to as an IC) is used.
In order to inspect the electrical characteristics of the IC, an electrical connector for electrically connecting the IC to be inspected and the measuring device is used. Such an electrical connector needs to have a structure in which the IC to be inspected can be detachably mounted.

An example of an electric connector used for such a measuring device will be described. FIG. 7 is a configuration diagram illustrating an example of the measurement device and the electrical connector. The measuring apparatus 10 is provided with an electric connector 300 for connecting the IC 200 to an electronic circuit board for measurement. This electrical connector 3
No. 00 has a structure in which electric signals can be input and output to and from the leads 210 of the IC 200 to be inspected, and the IC 200 can be easily replaced.

[0004] The structure of the electrical connector 300 will be described. FIG. 8 is a sectional view of the electrical connector and the IC to be inspected. The electrical connector 300 is connected to the lead 2 of the IC 200.
10 and electrodes (patterns) of the electronic circuit board 400 for measurement
410 are connected by a contact 320. The contact end 321 of the contact 320 opposite the contact surface of the lead 210 is incorporated into the housing 110 of the electrical connector 300 and has an elastic elastomer (elas).
tomer) 330. IC20
When the zero lead 210 is pressed against the contact 320, the contact 320 sinks downward (locking operation), and the contact end 321 is pressed against the elastomer 330. At this time, the elasticity of the elastomer 330 provides the spring property of the contact 310, so that the IC 200 can be stably mounted. Also, FIG.
It is a top view of an electrical connector. Contact 320 is I
A plurality of leads are provided corresponding to the leads 210 of the C 200, and the contacts 320 are separated by the housing 310.

[0005]

However, the conventional electric connector has a problem that it is difficult to prevent a high-frequency signal from leaking or entering.

In recent years, the frequency of ICs to be inspected has been increasing,
Measurement items to be inspected are also required to be measured at higher frequencies. As described above, with the increase in the frequency of the electric signal used for the test, the electric connector is also required to have a structure capable of measuring at a higher frequency. However, the conventional electrical connector cannot completely prevent the leakage of a high-frequency signal generated from a terminal, the noise that enters from another terminal or the outside, or the like. For example, the contact 320 of the above-described electrical connector 300 is not shielded around the contact 320, so that high-frequency signal leakage or dip occurs, which has a problem of affecting measurement.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electrical connector capable of preventing a high-frequency signal from leaking or entering.

[0008]

According to the present invention, there is provided an electric connector for electrically connecting an electrode of an object to be inspected and an electrode portion formed on the surface of an electric circuit board. A plurality of contacts for electrically connecting body electrodes and electrode portions formed on the electric circuit board, and a fixing portion and a housing for assembling the plurality of contacts in parallel on the electric circuit board at a constant pitch, An electrical connector, wherein the housing has an opening on the test object side and covers the entirety of the electrical circuit board side which is open, and is formed of a conductive material, Is provided.

In the electric connector having such a configuration, a plurality of contacts for electrically connecting the electrode portion formed on the electric circuit board surface and the object to be inspected, for example, the electrode portion of an IC, are formed by the fixing portion and the housing. They are assembled in parallel at a constant pitch such that one end is in contact with an electrode formed on the surface of the electric circuit board. The housing has an opening for opening a side of the contact end that comes into contact with the electrode portion of the device under test, and an opening for opening the electric circuit board side to cover the entire electric connector. Position. The housing is also formed of a conductive material, and functions as a shield.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an electric connector according to an embodiment of the present invention. This shows a state in which an IC 200 as an object to be inspected is mounted on the electrical connector 100 according to the present invention. The IC 200 is provided with leads 210 which are electrodes at a constant pitch around the periphery.
The electric connector 100 is provided on an electric circuit board, and is a contact (not shown) for electrically connecting the lead 210 to an electrode portion formed on the electric circuit board surface.
Are provided at a constant pitch so as to correspond to the leads 210. Further, the entirety of the electrical connector 100 is covered except for an opening that opens a contact end portion that comes into contact with the lead 210 by the housing 110 and an opening on the electric circuit board side.

The internal structure of the electrical connector 100 will be described. FIG. 2 is a partial cross-sectional view taken along the line aa ′ of FIG. 1. Electrical connector 100 and IC 20 shown in FIG.
Since 0 is symmetric, only one direction is shown from the axis of symmetry. Also, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.

The electrical connector 100 according to the present invention includes a housing 110, a contact 120, and an elastomer 13 for pressing the contact 120 toward the electronic circuit board 400.
0, a contact 120 and an electrode (pattern) 410;
The electronic circuit board 400 includes an insulating sheet 141 that forms an insulating layer that insulates the housing 110 and an insulating elastomer 142 that forms an insulating layer that insulates the contact 120 from the housing 110. Will be installed.

The housing 110 is a cover for the electrical connector 100 having an opening through which the end 121a of the contact 120 and the lead 210 of the IC 200 come into contact with each other, and an opening at the surface in contact with the electronic circuit board 400. IC
The outer side with respect to the center side where 200 is mounted has a concave shape having an opening on the surface of the electronic circuit board 400. The end 121b of the contact 120 and the elastomer 130 are stored in the recess. Also, housing 1
10, an electrode (pattern) 410 of the electronic circuit board 400,
And the end 121 stored in the recess of the housing 110
An insulating sheet 141 is formed between the vicinity of “b” and the side surface of the housing 110. An insulating elastomer 142 is sealed in a space formed by the contact 120 and the housing 110.

The housing 110 is made of a conductive material,
For example, it is formed of a conductive material having conductivity, such as iron, carbon, a yellow body, and aluminum. Alternatively, conductivity may be imparted by including the above-described conductive material in the synthetic resin.
The housing 110 is grounded by being connected to GND (not shown). As described above, since the housing 110 is formed of a conductive material and is connected to GND, the contact 120 can be shielded. As a result, it is possible to prevent the leakage of the high-frequency signal and to prevent the dive.

The contact 120 is an elastic thin wire having an end 121a that comes into contact with the lead 210 of the IC 200 and an end 121b that is housed in the recess of the housing 110. By contacting the electrode (pattern) 410, the lead 210 and the electrode (pattern) 410 are electrically connected. Contact 12
0 is the elastomer 13 in the recess of the housing 110.
It is assembled at a predetermined position by 0.

The elastomer 130 has a predetermined elasticity, and its lower half contacts the curved portion of the contact 120 located in the recess of the housing 110, and presses the contact 120 against the electronic circuit board 400.

The insulating sheet 141 is connected to the housing 110
(Pattern) 410 and contact 12 opposite to
0 and a layer having insulation properties formed between the housing 110. The insulating sheet 141 is made of insulating ceramic, rubber, mica, mica, phenol resin, or the like.

The insulating elastomer 142 is provided between the housing 110 and the contact 120 and the electrode (pattern).
410 sealed between the contact 120 and the surface of the electronic circuit board 400 excluding the portion that contacts the contact 120. Similarly to the insulating sheet 142, the insulating elastomer 142 is made of insulating ceramic, rubber, mica, mica, phenol resin, or the like. In addition, it is conceivable that friction occurs between the insulating elastomer 142 and the contact 120 that moves each time the IC 200 is measured. If the frictional resistance of the insulating elastomer 142 is large, the movement of the contact 120 is hindered, and the IC 200
This leads to poor contact between the lead 210 and the contact 120, making it impossible to measure correctly. In addition, when dust is generated during friction, the dust adheres between the contact 120 and the electrode (pattern) 410, and the contact 120 and the electrode (pattern) 410 have poor contact, so that correct measurement cannot be performed. For the above reasons, the insulating elastomer 142 is made of a material that has a small frictional resistance and does not generate dust. In the electrical connector 100, the insulating sheet 141 and the insulating elastomer 142 make it possible to reliably prevent unnecessary contact with the adjacent contact 120 or the electronic circuit board 400, thereby improving the isolation characteristics of the contact 120. .

The electronic circuit board 400 is a wiring board in which a wiring pattern is formed on one surface of an electrically insulating material by a printed wiring technique, and a plurality of printed wiring portions or electrodes (patterns) 410 corresponding to the respective contacts 120 are formed. Have.

Next, the internal structure of the electric connector 100 described above will be described with reference to a sectional view taken along the line bb 'of FIG. FIG. 3 is a partial cross-sectional view taken along the line bb ′ of FIG. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.

The housing 110 includes an electronic circuit board 400
Are connected to the GNDs 420a and 420b provided in. Further, electrical contact between the contacts 120a, 120b, 120c is reliably prevented by the insulating elastomer 142. For this reason, it is possible to prevent leakage of noise generated from itself such as crosstalk noise between adjacent and parallel contacts, or entry of noise from the outside.

The operation of the electric connector 100 having such a configuration will be described with reference to FIG. Electrical connector 100
The housing 110 is provided with a concave portion which is opened downward, and in the concave portion, the end portion 12 of the contact 120 is provided.
1b is an electronic circuit board 400
Is pressed down. IC 210 Lead 210
Is pressed against the end 121a of the contact 120,
The contact 120 sinks down, and the end 121 b is pressed against the elastomer 130. At this time, the elasticity of the elastomer 130 provides the spring property of the contact 310, so that the IC 200 is stably mounted. The housing 110 is formed of a conductive material, is connected to the GNDs 420a and 420b, and functions as a shield for the contact 120. The electrical contact between the housing 110, the contacts 120, and the electronic circuit board 400 is provided by an insulating layer formed by the insulating sheet 410 having an insulating property and the insulating elastomer 142, except where necessary. Is reliably prevented.

As described above, in the electrical connector according to the present invention, by shielding the contacts by the housing, it is possible to prevent leakage and dive of high-frequency signals, and to improve high-frequency characteristics. Furthermore, by isolating the housing from the contacts and the electronic circuit board, the isolation characteristics can be improved.

Next, the structure of the insulating sheet inserted between the housing and the electronic circuit board of the electrical connector according to the present invention and the structure of the housing will be described. FIG. 4 is a plan view of the electric connector according to the embodiment of the present invention viewed from below with the electric connector removed from the electronic circuit board. 1 and 2
The same components as those described above are denoted by the same reference numerals, and description thereof is omitted.

Contacts 120a, 120b, 120c
Is an electronic circuit board 400 by the elastomer 130.
Pressed in the direction. The housing 110, the electrode (pattern) 410 of the electronic circuit board 400, and the housing 110
Insulating sheet 141 to prevent electrical contact with
a, 141b, 141c are mounted on the housing 110. The housing 110 includes insulating sheets 141a,
Slits 111 for mounting 41b and 141c are provided, and insulating sheets 141a, 141b and 141 are provided.
c, along the slit 111, the housing 110
At a predetermined location. Insulating sheets 141a, 1
41b and 141c are formed of the insulating material described above, and have a shape corresponding to the slit 111 provided in the housing 110.

The slit portion will be described in more detail. FIG. 5 is a sectional view of a slit portion of the electric housing according to the present invention. 2 and 4 are denoted by the same reference numerals, and description thereof is omitted. Slit 11 provided in housing 110 so as to face electrode (pattern) 410
1, the insulating sheet 141 is inserted. With such a structure, the insulating sheet 141 can be easily attached. In particular, as shown in the enlarged view, by inclining the side surfaces of the slit 111 and the insulating sheet 141, the insulating sheet 141 can be easily attached to the slit 111.

In the above description, the slit is provided in the housing and the insulating sheet is inserted. However, the contact portion between the housing and the electronic circuit board or the like may be a single connection sheet. FIG. 6 is a cross-sectional view of a contact portion between a housing and an electronic circuit board according to another embodiment of the present invention. The same components as those in FIG. 5 are denoted by the same reference numerals, and description thereof is omitted. A connection sheet 143 is inserted between the housing 110, the electronic circuit board 400, and the housing 110. The connection sheet 143 includes an insulating portion 143a made of an insulating material in contact with the electrode (pattern) 410 and a conductive portion 143b in contact with the GND 420. Conductive part 143b
Plays a role of electrically connecting the front and back of the connection sheet 143 with a conductive material such as gold plating. According to this, since it is not necessary to provide a slit in the housing 110 in accordance with the position of the electrode (pattern) 410, the versatility of the housing 110 is increased, and the structure of the housing 110 can be simplified.

[0028]

As described above, according to the present invention, a plurality of contacts for electrically connecting the electrode portion formed on the electric circuit board surface and the electrode portion of the device under test are fixed by the fixed portion and the housing. Assembled in parallel at the pitch. The housing is a cover that covers the entirety of the opening that is open to the test object side and that is open to the electric circuit board side, and is formed of a conductive material and functions as a shield.

As described above, by forming the housing with a conductive material, it is possible to shield the contacts, and to prevent noises such as leakage of high-frequency signals generated from the contacts and jumping of high-frequency signals entering from the outside. can do.

[Brief description of the drawings]

FIG. 1 is a plan view of an electric connector according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view taken along the line a-a 'of FIG.

FIG. 3 is a sectional view taken along the line bb 'in FIG.

FIG. 4 is a plan view of the electric connector according to the embodiment of the present invention viewed from below with the electric connector removed from the electronic circuit board.

FIG. 5 is a sectional view of a slit portion of the electric housing according to the present invention.

FIG. 6 is a sectional view of a contact portion between a housing and an electronic circuit board according to another embodiment of the present invention.

FIG. 7 is a configuration diagram illustrating an example of a measurement device and an electrical connector.

FIG. 8 is a sectional view of an electrical connector and an IC to be inspected.

FIG. 9 is a plan view of the electrical connector.

[Explanation of symbols]

100 ... electrical connector, 110 ... housing, 120 ...
Contact, 121a, 121b ... contact end, 1
30 ... elastomer, 141 ... insulating sheet, 142 ...
Insulating elastomer, 200 ... IC, 210 ... Lead,
400: electronic circuit board, 410: electrode (pattern), 4
20… GND

Claims (5)

[Claims] 1. An electrical connector for electrically connecting an electrode of a device under test and an electrode portion formed on an electric circuit board surface, comprising: an electrode of the device under test and an electrode portion formed on the electric circuit board. A plurality of contacts for electrically connecting the plurality of contacts, a fixed part and a housing for assembling the plurality of contacts in parallel on the electric circuit board at a constant pitch, and the housing has an opening on the object side. An electrical connector, comprising: a cover that covers the whole of the electrical circuit board, the electrical connector being provided on the electrical circuit board side, the electrical connector being formed of a conductive material. 2. The electrical connector according to claim 1, wherein said housing is further grounded. 3. An insulating layer is formed between the contact, the housing, and the electric circuit board surface, excluding a contact surface between the plurality of contacts and an electrode portion formed on the electric circuit board surface. The electrical connector according to claim 1, wherein the electrical connector is used. 4. The electrical connector according to claim 3, wherein the insulating layer between the plurality of contacts and the housing is further formed of a material having low frictional resistance. 5. The apparatus according to claim 1, wherein the housing further includes a slit provided between the electrode portion on the electric circuit board and the housing for mounting an insulating sheet, which is the insulating layer. Item 3. The electrical connector according to Item 3.