Source: http://www.google.com/patents/US7204708?dq=inventor:%22Arthur+R.+Hair%22&ei=VAy0Tsa4NYTl0QGQiqWiBA
Timestamp: 2014-12-28 16:00:08
Document Index: 78606022

Matched Legal Cases: ['Application No. 2002', 'Application No. 2003', 'Application No. 2001', 'Application No. 11', 'Application No. 10223502', 'Application No. 2001', 'Application No. 2003']

Patent US7204708 - Socket for semiconductor device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsLengths of arms of pressing members held at a lower end of an arm section of a cover member are determined in correspondence to the retention of semiconductor devices having contour dimensions different from each other, and are shorter than a length of the arm section so that part of the pressing members...http://www.google.com/patents/US7204708?utm_source=gb-gplus-sharePatent US7204708 - Socket for semiconductor deviceAdvanced Patent SearchPublication numberUS7204708 B2Publication typeGrantApplication numberUS 11/448,899Publication dateApr 17, 2007Filing dateJun 8, 2006Priority dateDec 17, 2002Fee statusPaidAlso published asUS7118386, US7165978, US7278868, US20040248435, US20060228915, US20060228916, US20060228926Publication number11448899, 448899, US 7204708 B2, US 7204708B2, US-B2-7204708, US7204708 B2, US7204708B2InventorsMasaru Sato, Ryo UjikeOriginal AssigneeYamaichi Electronics Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (70), Non-Patent Citations (19), Referenced by (10), Classifications (15), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetSocket for semiconductor deviceUS 7204708 B2Abstract Lengths of arms of pressing members held at a lower end of an arm section of a cover member are determined in correspondence to the retention of semiconductor devices having contour dimensions different from each other, and are shorter than a length of the arm section so that part of the pressing members is projected outside through a recess of the socket body.
Images(68) Claims(7)
a socket body having a semiconductor device placement section for selectively accommodating one of a plurality of semiconductor devices having contour dimensions different from each other, said socket body configured to be electrically connected to contact terminals;
a pressing member configured to be brought in contact with said semiconductor device and press said semiconductor device toward said contact terminals, said pressing member being configured to hold said semiconductor device in said semiconductor device placement section; and
a cover member supported by said socket body in a movable manner for bringing said pressing member into contact with or away from said semiconductor device in accordance with the attachment or detachment of said semiconductor device relative to said semiconductor device placement section;
wherein the cover member includes a convex portion configured to engage with a proximal end of the pressing member to raise the pressing member to a position away from the semiconductor device when the cover member is lowered.
2. A socket in accordance with claim 1, wherein the convex portion includes a lower arm section to engage with the proximal end of the pressing member.
3. A socket in accordance with claim 2, wherein the socket body includes a recess configured to receive the lower arm section and the proximal end of the pressing member.
4. A socket in accordance with claim 1, wherein said pressing member is a first pressing member, said socket further comprising:
a second pressing member for holding said semiconductor device in said semiconductor device placement section in association with said first pressing member, said second pressing member having a proximal end supported at an opposite end of said socket body from the first pressing member.
5. A socket in accordance with claim 4, wherein the convex member is a first convex member, said cover member further comprising a second convex portion configured to engage the proximal end of the second pressing member to raise the second pressing member to a position away from the semiconductor device when the cover member is lowered.
7. The socket for a semiconductor device as claimed in claim 6,
wherein the convex portion further comprises openings configured to receive the first and second pressing members when said cover member is lowered.
This application is a divisional of U.S. patent application Ser. No. 10/735,882, filed Dec. 16, 2003 now U.S. Pat. No. 7,118,386, which claims priority based on Japanese Patent Application No. 2002-365724, filed Dec. 17, 2002, and Japanese Patent Application No. 2003-393067, filed Nov. 21, 2003, each of which is incorporated herein by reference.
As shown in FIG. 67, the socket for a semiconductor device includes a socket body 4 disposed on a printed wiring board not illustrated and accommodating a group of contact terminals (not shown) for the electric connection of a semiconductor device 2 with the printed wiring board, a positioning member 6 disposed above the contact terminal group within the socket body 4 and having an accommodating section 6a for mounting the semiconductor device 2 therein, a latch mechanism disposed around the positioning member 6 and having a pair of pressing members 8 for selectively holding the semiconductor device 2 relative to the accommodating section 6 a of the positioning member 6, and a cover member 10 for transmitting the operative force via a drive mechanism to the latch mechanism 8 so that the pressing members 8 are operated.
The pair of pressing members 8 of the latch mechanism are arranged opposite to each other while interposing the semiconductor device 2 between the both. The pressing member 8 comprises of a proximal end 8B supported rotational moveably by the socket body 4 and coupled to the above-mentioned drive mechanism, an touch portion 8P for selectively being in contact with or apart from the outer periphery of the semiconductor device 2, and a connecting portion BC for coupling the proximal end 8B with the touch portion 8P.
SUMMARY OF THE INVENTION With reference to the above-mentioned problems, an object of the present invention is to provide a socket for a semiconductor device capable of selectively mounting thereon one of a plurality of semiconductor devices having contour dimensions different from each other, which is capable of reducing an occupation area of a socket body on a printed wiring board and being arranged to be close to the adjacent one for the purpose of realizing the high-density arrangement of the IC sockets. To achieve the above-mentioned object, a socket for a semiconductor device according to the present invention the inventive socket for a semiconductor device, comprises a socket body having a semiconductor device placement section for selectively accommodating one of a plurality of semiconductor devices having contour dimensions different from each other, to be electrically connected to contact terminals, a pressing member having an touch portion brought in contact with the semiconductor device and pressing the semiconductor device toward the contact terminals, the pressing member being driven by a pressing member driving mechanism in accordance with the attachment or detachment of the semiconductor device relative to the semiconductor device placement section, for holding the semiconductor device in the semiconductor device placement section; and wherein, when the pressing member driving mechanism moves the touch portion of the pressing member to be away from the semiconductor device to a position in readiness at which the touch portion of the pressing member is not interfered with the semiconductor device upon the attachment or detachment of the semiconductor device, a portion of the pressing member is bulged outwardly from an end of the socket body via an opening of the socket body.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a first embodiment of the socket for a semiconductor device in accordance with the present invention, schematically illustrating a whole structure thereof;
FIG. 36 is a sectional view taken along a section line XXXVI�XXXVI in FIG. 35;
FIG. 39 is a sectional view taken along a section line XXXIX�XXXIX in FIG. 38;
FIG. 67 is an illustration made available for explaining the structure and the operation of a important part of the prior art socket-for a semiconductor device.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS FIGS. 1 and 2 schematically illustrate a whole structure of a first embodiment of the socket for a semiconductor device in accordance with the present invention.
The cover member 30 has arm sections 30H to be coupled to the proximal ends of the pressing members 26 and 28 described later via connecting pins, while being opposed to the recess 20 b. A pair of arm sections 30H are disposed at a predetermined mutual distance as seen in the vertical direction to a paper plane. An upper end of the arm section 30H is formed in the inner circumference of the cover member 30 to be integral therewith, while a lower end of the arm section 30H is projected toward the recess 20 b and has a hole to be engageable with a connecting pin 32. The, arm section 30H has a predetermined length as shown in FIG. 2. That is, this length is set to be slightly longer than a whole length of the pressing member 26 or 28, whereby, when the cover member 30 is at the uppermost position, the pressing members 26, 28 coupled thereto are held under pressure, and when the cover member 30 is at the lowermost position, the pressing members 26 and 28 coupled thereto are at the position in readiness as shown in FIGS. 1 and 3 and the lower end of the arm section 30H is not in contact with the bottom surface defining the recess 20 b. Since the pressing members 26 and 28 provided between the arm sections 30H opposite to each other in correspondence to the recess 20 b have the identical structure each other, the explanation will be made solely on the pressing member 26 and the explanation of the pressing member 28 will be eliminated.
In the embodiment shown in FIGS. 19A and 19B, while part of the pressing members 25 and 27 are directly bulged outward from the socket body 21 and the end of the cover member 29 when the cover member 29 is at the lowermost position, in the embodiment shown in FIGS. 20A and 20B, a convex section 84P encircling end surfaces of the pressing members 25 and 27 in the thickness direction is provided on the opposite sides in the frame portion of the cover member 84 in correspondence to the pressing members 25 and 27 so that part of the pressing members 25 and 27 are not-directly bulged from the ends of the socket body 80 and the cover member 84, as shown in FIG. 22.
FIGS. 32 and 34 illustrate a state in which a plurality of semiconductor device sockets in the above-mentioned fifth embodiment are disposed on the, printed wiring board 22. In this regard, in FIGS. 32 and 34, the same reference numerals are used for denoting the same elements in FIGS. 19A and 19B and the description thereof will be eliminated. FIG. 34 shows a state in which the cover member 100 is at the lowermost position.
In this regard, while the cover member 30 and the pressing members 26 and 28 of the latch mechanism are associated with each other and the contact terminal is a so-called �POGOPIN� (registered trade mark) in the respective embodiments of the inventive semiconductor device socket described hereinabove, such a structure is not indispensable. As disclosed, for example, in Japanese Patent No. 3257994 and Japanese Patent Application Laying-open No. 10-302925 (1998), the terminal of the semiconductor may be nipped by a pair of contact terminals having a movable contact openable in one direction or both directions.
The cover member 112 has an opening 112 a in a central region for allowing a semiconductor device 36 or 42 to pass through the same during the attachment/detachment thereof. On longer sides of a frame portion of the cover member 112, cam sections 112N to be engaged with a slide member 119 of the socket body 110 described later are provided at a predetermined gap on the lower end surface thereof. Between the cam sections 112N on the respective sides, a pair of arm sections 112A to be engaged with pressing members 114 and 116 of the socket body 110 described later are formed integral with the cover member 112 at a predetermined gap between the both. A cut 112 b is formed between the arm sections 112A. On shorter sides of the frame portion of the cover member 112, there are claws 100 m to be engaged with cuts 110 mof the socket body 110 shown in FIG. 37. The cam sections 112N, the arm sections 112A and claws 110 m are projected toward the socket body 110.
The semiconductor device socket includes a socket body 60 fixed onto the printed circuit body 22, a plurality of contact terminals 24 ai (i=1 to n, n is a positive integer) arranged in a contact accommodating section 60 a in a central region of the socket body 60, for electrically connecting a semiconductor device 76 described later to the printed wiring board 22, a cover member 70 supported by the socket body 60 to be movable upward and downward for transmitting the operative force to a latch mechanism, a positioning member (not shown) held by the socket body 60 in a detachable manner, for accommodating the semiconductor device 76 to be tested and for locating electrode sections of the semiconductor device 76 to the contact terminals 24 ai, and pressing members 66 and 68 for pressing the respective electrode sections of the semiconductor device 76 accommodated in the positioning member toward the plurality of contact terminals 24 ai. In this regard, also in this semiconductor device socket, in place of the semiconductor device 76, another semiconductor device 82 having the same shape and thickness as those of the semiconductor device 76 but different in contour dimension may be mounted to the socket body 60 by using a predetermined positioning member (not shown) for the semiconductor device 82, in the same manner as in the above-mentioned first embodiment. The semiconductor device 76 or 82 may be, for example, of a generally square shape such as BGA type or LGA-type, having an electrode surface on which a plurality of electrode sections are arranged in the vertical and horizontal directions. A contour dimension of the semiconductor device 82 is larger than that of the semiconductor device 76.
Thereby, as shown in FIG. 51, when the cam surface 130′CB of the cover member 130′ described later is lowered, the engagement end section 144K of the curved section 144B is separated from the accommodating section 120 a and the stationary contact section 144F, while the contact 144C is separated from the flat surface of the socket body 120 to a position in readiness. On the other hand, when the cam surface 130′CB of the cover member 130′ is elevated, the engagement end section 144K of the curved section 144B approaches the accommodating section 120 a while sliding along the cam surface 130′CB, and the contact 144C approaches the flat-surface of the socket body 120 and the stationary contact section 144F.
Also in the engagement end section of the contact terminal 168ai, the same operation as in the above-mentioned contact terminal 166 ai is carried out in accordance with the upward and downward motion of the cover member 162.
The frame-like cover member 162 has an opening 162 a in a central region thereof. The opening 162 a allows the semiconductor element SDV to pass through the same when the semiconductor element is mounted to or removed from the accommodating section 170A. On the respective side of the cover member 162, a pair of claws 162N engageable with a groove 160G of the socket body 160 in a movable manner are-projected toward the outer circumference of the socket body 160, as shown in FIG. 54. The cover member 162 is biased in the direction away from the socket body 160 by coil springs provided between the cover member 162 and the socket body 160. In this regard, the cover member 162 is maintained at the uppermost position by the engagement of an end of the claw 162N with an end of the groove 160G.
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Co., Ltd.IC socket having detachable aligning elementUS7887355Oct 29, 2009Feb 15, 2011Yamaichi Electronics Co., Ltd.Semiconductor device socket* Cited by examinerClassifications U.S. Classification439/259, 439/73, 439/331International ClassificationG01R1/04, G01R1/073, H01R33/76, H01L23/32, G01R31/26, H01R13/15Cooperative ClassificationH01L23/32, G01R1/0483, G01R1/0466, G01R31/2863European ClassificationG01R1/04S3U, G01R1/04S3D3Legal EventsDateCodeEventDescriptionSep 16, 2010FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google