KR101016019B1 - Burn-In Socket for WELP Type Package - Google Patents

Abstract

The present invention relates to a burn-in socket for a WELP type package, in particular, in a burn-in socket, each of the WELP type packages is provided with a WELP type package mounting part on an upper surface thereof and when the WELP type package is mounted on the mounting part. A base having a contact receiving portion at a position corresponding to the lid; The probe part accommodated in the contact receiving part and making an electrical connection to the outside of the base, the package part of the WELP type package when moved to the upper side under the lid located at the bottom of the lid located on the lower surface of the package part of the WELP type package. A contact having contact with a lead positioned on a lower surface and separated from a lead positioned on a lower surface of the package portion of the WELP-type package when moved downward; And, when the detachment of the WELP-type package in the package mounting portion is opened to secure a space for detaching the WELP-type package on the base, and closed after mounting the WELP-type package to fix the vertical movement of the WELP-type package A burn-in socket for a WELP type package comprising a pair of latches disposed opposite one another.

This enables burn-in testing of WELP-type packages that are not possible with conventional TSOP-type or BGA-type burn-in sockets, and enables sockets to maintain stable electrical contact with packages during burn-in tests. Contact contact is made on the lower lid to prevent damage to the lid of the package during testing.

Burn-in, Socket, WELP

Description

Burn-In Socket for WELP Type Package}

The present invention relates to a burn-in socket for a WELP type package, and more particularly to a burn-in test of a WELP type package which is not possible with a conventional TSOP type or BGA type burn-in socket, and to a socket during the burn-in test. This package provides a stable electrical contact and relates to burn-in sockets for WELP type packages which can prevent damage to the leads of the package during the test as the contact contact is made on the leads at the bottom of the package. .

There are various package methods in the semiconductor chip package method, which are related to the field of application of each device, development trend of technology, integration degree, and the like.

Conventionally, the TSOP type was mainly used as the chip package method, but the BGA type was additionally developed according to the high density of the lead electrode, and in recent years, the WELP method in which the lead is drawn out from the bottom of the package and bent upwards This is applied in the field of flash memory.

However, since the development of such a package type has recently been made, no dedicated burn-in socket has been developed. Therefore, the burn-in test of the WELP type package has been carried out with a conventional TSOP type or BGA type burn-in socket. In order to solve this problem, in order to solve such a problem, in the case of a conventional TSOP type burn-in socket and only the lead of the WELP type package is deformed to be in contact, the lead is shown in FIG. 6 in the case of the WELP type package. As it has a shape to be drawn out from the bottom and bent to the top, there is a problem that the lead is easily damaged.

This enables burn-in testing of WELP-type packages, allows the socket to maintain a stable electrical contact with the package during burn-in testing, and as the contact contacts are made on the leads at the bottom of the package, There is an urgent need to develop a burn-in socket for a WELP type package that can prevent damage to the leads.

In order to solve the above problems of the prior art, the present invention enables burn-in testing of a WELP type package which is not possible with a conventional TSOP type or BGA type burn-in socket, and the socket stably holds the package during the burn-in test. It is an object of the present invention to provide a burn-in socket for a WELP type package that can maintain electrical contact and prevent damage to the lead of the package during the test as the contact contact is made at the lead under the package.

In order to achieve the above object, the present invention

In a burn-in socket,

A base having a WELP-type package mounting portion on an upper surface thereof, and having a contact receiving portion at a position corresponding to each lead of the WELP-type package when the WELP-type package is mounted on the mounting portion;

The probe part accommodated in the contact receiving part and making an electrical connection to the outside of the base, the package part of the WELP type package when moved to the upper side under the lid located at the bottom of the lid located on the lower surface of the package part of the WELP type package. A contact having contact with a lead positioned on a lower surface and separated from a lead positioned on a lower surface of the package portion of the WELP-type package when moved downward; And,

The WELP-type package is opened when the WELP-type package is attached or detached to the package mounting unit to secure a space for the WELP-type package to be detached from the base, and is closed after the WELP-type package is mounted. Provided is a burn-in socket for a WELP type package, characterized in that it comprises a pair of latches arranged facing away.

Also preferably the present invention

A base having a WELP-type package mounting portion on an upper surface thereof and having a contact receiving portion at a position corresponding to each lead of the package when the package is mounted on the mounting portion;

A probe part accommodated in the contact accommodating part and making an electrical connection to the outside of the base, a contact part which is located under the lid located on the bottom surface of the package and contacts and separates with a lead according to the shanghai movement, the probe part and the contact part An elastic part having an elastic restoring force from a lower part to an upper part of the lead, and a contact driving part extending from the elastic part to contact the cover part to form the elastic deformation. Contact made;

Coupled to the base so as to be movable in the vertical direction, the center portion is provided with a package mounting opening, in contact with the contact driving portion of the contact at the time of movement to the base in accordance with the elastic deformation of the contact in the vertical direction of the contact portion A cover for causing contact and detachment with said lid by movement to said lid; And,

It has a rotary drive unit rotatably coupled to the base to the rotation axis, the rotating drive to allow the rotation according to the shankdong of the cover on the outside from the rotating shaft, and has a fixing piece for fixing the package when closed from the rotating shaft to the inside It provides a burn-in socket for a WELP type package, characterized in that it comprises a pair of latches disposed opposite the side where the contact is not disposed.

According to the burn-in socket for the WELP type package of the present invention, it is possible to burn-in test of the WELP type package which is impossible with the conventional TSOP type or BGA type burn-in socket, and the socket stably electricals the package during the burn-in test. The contact can be maintained and contact can be made at the lid on the bottom surface of the package, thereby preventing damage to the lid of the package during the test.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The burn-in socket for a WELP type package according to the present invention includes a WELP type package 5 mounting portion 12 on an upper surface of the burn-in socket, and the WELP type package 5 is mounted on the mounting portion 12. A base 10 having a contact receiving portion 14 at a position corresponding to each lead 7 of the WELP type package 5 in this case; The probe unit 22 accommodated in the contact receiving unit 14 and making an electrical connection to the outside of the base 10, and positioned below the lid 7 positioned on the lower surface of the package part of the WELP type package 5. When the upper portion of the WELP type package 5 is in contact with the lid 7 when the upper portion of the WELP type package 5 moves upward, the lid is placed on the lower surface of the package portion of the WELP type package 5 when the lower portion moves. A contact 20 having a contact portion 24 separated from 7); And, when the WELP-type package 5 is detached to the package mounting portion 12 is opened so that the space for detaching the WELP-type package 5 to the base 10 is secured, the WELP-type package (5) It is configured to include a pair of latches 40 disposed to face each other to close and fix the vertical movement of the WELP type package 5 after the mounting.

That is, according to the present invention, the configuration of the WELP type package is derived from the configuration in which the lead of the package is drawn out from the lower surface of the package portion of the package and extends upward as shown in FIG. 6. Since the lead of the WELP type package is composed of a portion where the lead from the package portion is exposed on the lower surface of the package portion and a portion extending outward from the package portion, the contact between the lead and the contact after the lead is introduced into the burn-in socket Among them, the lead part corresponding to the part exposed to the lower surface of the package part is structurally rigid and secure, and the package is fixed against the contact pressure of the contact applied from the lower part of the package to the upper part according to the contact between the contact and the lead. Characterized by having a latch for preventing the upward movement of the package The.

To this end, the base has a WELP type package 5 mounting portion 12 on its upper surface, and each lead 7 of the WELP type package 5 when the WELP type package 5 is mounted on the mounting portion 12. The contact accommodating part 14 is provided in the position corresponding to).

In addition, the contact is accommodated in the contact receiving portion 14, the probe portion 22 for making an electrical connection to the outside of the base 10 and the lead 7 located on the lower surface of the package portion of the WELP type package 5 When the upper part of the WELP type package 5 is in contact with the lid 7 located at the bottom of the package part of the WELP type package 5 when moved upward, the bottom of the package part of the WELP type package 5 is moved. It has a structure provided with the contact part 24 separated from the lead 7 located in. Various configurations known in the art may be applied thereto to achieve vertical movement of the contact portion. Preferably, as shown in FIG. 3, the contact 20 is accommodated in the contact receiving portion 14. A probe part 22 which makes an electrical connection to the outside of the base 10, and a contact part which is located under the lid 7 located on the lower surface of the package 5 and makes contact with and detaches from the lid 7 according to the shanghai-dong ( 24) an elastic portion that connects between the probe portion 22 and the contact portion 24 and enables the movement of the contact portion 24 according to the elastic deformation and has elastic restoring force from the lower portion of the lid 7 to the upper portion. (26) and the contact driving portion 28 extending from the elastic portion 26 to contact the cover to form the elastic deformation. Through this, the contact driving by elastic deformation can be made. Since such driving can be made more easily according to the introduction of the cover, it is coupled to the base 10 so as to be movable in the vertical direction, and a package ( 5) The mounting opening 32 is provided, the contact portion (28) in contact with the contact driving portion 28 of the contact 20 in accordance with the elastic deformation of the contact (20) during the movement to the base (10) The cover 30 further includes a cover 30 for causing contact and separation with the lid 7 by moving in the vertical direction of the lead 24.

In addition, the latch is opened when the WELP type package 5 is detached from the package mounting part 12 so that a space for detaching the WELP type package 5 from the base 10 is secured, and the WELP type package ( 5) It is closed after mounting, and it has a structure which fixes the up-down movement of the said WELP type package 5, and consists of one pair arrange | positioned facing each other in order to make the package fixed clearly. Such a latch may be configured by a latch method of various types known in the art, which may be applied to an existing socket or insert. Preferably, the latch 40 is pivotally rotated to the base 10. It has a rotary drive portion 44 for engaging the rotation of the cover 30 on the outside from the rotary shaft 42, the package 5 when closing inward from the rotary shaft 42 It has a fixing piece 46 for fixing the, and constituted in a pair arranged opposite to the side where the contact 20 is not disposed may be made in synchronization with the drive of the latch and the contact according to the operation of the cover, It is good because the configuration can be easily configured,

In addition, the base may be integrally accommodating the contact, and as shown in FIG. 1, the upper part 16 and the lower part 18 are separated, and the contact 20 is interposed therebetween. It is possible to easily assemble the contacts and to secure the fixing in the base of the contacts.

In addition, preferably, the cover 30 and the base 10 or between the rotational drive 44 and the base 10 of the latch 40 may further include a configuration further comprising an elastic member (50). . That is, in the case where the elastic member is provided between the cover and the base when the cover is moved up and down, as shown in the specific example of FIG. 1, a force is applied only when the cover is moved downward. This can be replaced by the restoring force, so that the driving can be performed smoothly. The same may be applied to the rotational movement of the latch. Although not shown, the latch is closed when the latch 10 further includes an elastic member between the lower surface of the rotation driving unit 44 of the latch 40 and the base 10. The restoring force of the present invention can be provided, so that the locking operation can be performed smoothly. The elastic member may be applied to a variety of known elastic members.

Such specific examples of the present invention are as shown in Figs. That is, as shown in FIG. 1, a contact receiving portion 14 is formed between the upper base 16 and the lower base 18, and a contact is inserted therebetween to prepare a base provided with the contact. In this case, as shown in FIG. 3, the contact includes a probe part for electrically connecting an electrode of the test substrate outside the socket and a lead of the package, a contact part in direct contact with the rib, and a contact part of the probe part. And a contact driving portion for transmitting a force according to the vertical movement of the cover to the contact elastic portion so that the elastic deformation is achieved, and the contact portion and the contact driving portion of the contact are connected to each other. In particular, as shown in the figure, the U-shaped protrusions extending from the elastic portion to the upper portion can facilitate driving, and the vertical movement of the cover can be achieved by elastic deformation of the contact.

Next, a pair of latches, which are opened and closed according to the vertical movement of the cover, is made to face each other in a direction perpendicular to the contact. The latch is composed of a rotating shaft and a rotation driving unit and a fixed piece, the rotating shaft is rotatably coupled to the base, the cover is moved downward to press the rotary drive to open, move up again to lift the fixed piece to close the configuration The fixing piece has a L-shaped cross-sectional shape so that the package is well fixed.

Such a rotational drive of the latch and elastic deformation of the contact are preferably made up and down of the cover. For this purpose, the cover is coupled onto the assembly of the base and the latch. At this time, the cover 30 is preferably in contact with the outer side of the contact driving unit 28 for the elastic deformation of the contact, the inclined surface inclined from the outer bottom of the cover to the inner upper side (inside the cover 30) ( It is preferable to have a contact surface 34 made of 34). Specific examples thereof are as shown. In addition, for the rotational driving of the latch, preferably, the cover 30 presses the upper surface of the rotation driving unit 44 when the cover is moved downward to rotate open the latch 40, the cover 30 is the upper When moving to the upper surface of the fixing piece 46 is preferably coupled to the outside of the latch 40 by a gap for rotationally closing the latch 40. This allows a simple and reliable drive of the latch.

Assembling a preferred embodiment of the present invention having the configuration as shown in Figure 1 is made as shown in Figure 2, the driving of such an assembly will be described below. That is, as shown in Fig. 2, once the burn-in socket assembly is formed, it is ready as shown in the cross section of Fig. 4, where an enlarged portion of the red square box is shown in the bottom right. The figure below shows the cross section of the latch. In this case, when the cover is moved downward, the hatched portion of the cover in the lower left picture is pressed by the rotational drive part 44 of the latch, and as shown in the lower left picture of FIG. 5, the latch is opened to prepare to receive a package. In addition, as the cover moves downward, the hatched portion of the cover moves downward in the lower right figure, and the contact driving portion 28 of the contact is pushed to the left along the contact surface 34 and the lower right figure of FIG. Likewise, the elastic deformation of the contact is made so that the contact portion of the contact is lowered below the mounting portion to prepare for receiving the package. 5 illustrates all of these states.

Next, when the package is mounted in the state of FIG. 5, the cover is moved upward again, and accordingly, the hatched portion of the cover is moved upward in the lower left figure of FIG. 5 to lift the fixing piece 46 of the latch. As shown in the lower left picture of FIG. 6, the latch is rotated to close the latch to fix the package. In addition, as the cover moves upward, the hatched portion of the cover moves upward in the lower right figure of FIG. 5, and the contact driving portion 28 of the contact is restored to the right along the contact surface 34, and thus, FIG. As shown in the right figure below, the elastic contact of the contact is made so that the contact portion of the contact is raised above the mounting portion, so that the contact is made by applying a contact pressure to the lead under the package portion of the package. That is, part of the elastic restoration acts as the contact pressure, which is received by the fixing piece of the latch. 6 illustrates all of these states, and the burn-in socket in which the package is seated is as shown in FIG. 7.

The socket in which the package is mounted as described above performs burn-in test, and after pressing the cover to bring it back to the state of FIG. 5, withdrawing the package, and returning the cover to its original state, it returns to the ready state of FIG. 4. do.

The present invention described above is not limited to the above detailed description and examples, and various modifications and changes of those skilled in the art are possible without departing from the spirit and scope of the present invention as set forth in the claims below. Of course it is also included within the scope of the present invention.

1 is an exploded perspective view of one embodiment of a burn-in socket for a WELP type package of the present invention.

2 is a perspective view, a plan view and a front view showing a combined state of the embodiment shown in FIG.

3 is an enlarged view of a contact applied to the embodiment shown in FIG. 1.

4 to 6 are cross-sectional and partial enlarged views showing the operating states of the embodiment shown in FIG.

FIG. 7 illustrates a perspective view of an embodiment of a burn-in socket for a WELP package of the present invention in which the package of FIG. 6 is completed. FIG.

Explanation of symbols on the main parts of the drawings

5: (WELP type) package 7: lead

10: base 12: mounting portion

14: contact receiving portion 16: base adapter

18: lower base 20: contact

22: probe portion 24: contact portion

26: elastic portion 28: contact driving portion

30: cover 32: mounting opening

34: sloped or contact surface 40: latch

42: rotary shaft 44: rotary drive unit

46: fixing piece 50: elastic member

Claims (6)

delete A base having a WELP-type package mounting portion on an upper surface thereof and having a contact receiving portion at a position corresponding to each lead of the package when the package is mounted on the mounting portion; A probe part accommodated in the contact accommodating part and making an electrical connection to the outside of the base, a contact part which is located under the lid located on the lower surface of the package and contacts and separates with the lead according to the shanghai movement, between the probe part and the contact part And an elastic part having elastic restoring force from the lower part to the upper part of the lead, and a contact driving part extending from the elastic part to contact the cover part to form the elastic deformation. Contacts; Coupled to the base so as to be movable in the vertical direction, the center portion is provided with a package mounting opening, in contact with the contact driving portion of the contact at the time of movement to the base in accordance with the elastic deformation of the contact in the vertical direction of the contact portion A cover for causing contact and detachment with said lid by movement to said lid; And, It has a rotary drive unit rotatably coupled to the base to the rotation axis, the rotating drive to allow the rotation according to the shankdong of the cover on the outside from the rotating shaft, and has a fixing piece for fixing the package when closed from the rotating shaft to the inside And a pair of latches disposed opposite the side on which the contact is not disposed. The method of claim 2, And said base is separated into upper and lower portions, and said contact is sandwiched therebetween. The method of claim 2, The contact portion and the contact driving portion of the contact is made of a U-shaped protrusion between the upper portion extending from the elastic portion, And the cover is in contact with an outer side of the contact driving portion, and has a contact surface formed of an inclined surface inclined from an outer lower side to an inner upper side of the cover inside the cover. The method of claim 2, The cover is coupled to the outside of the latch by a gap for pressing the upper surface of the rotary drive to rotate the latch when the cover is moved to the bottom, the rotation of the latch by pushing the upper surface of the fixing piece when the cover is moved upward. Burn-in socket for WELP package. The method of claim 2, And a resilient member between the cover and the base or between the rotational driving portion of the latch and the base.

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