Source: https://patents.google.com/patent/US7165978?oq=6%2C757%2C710
Timestamp: 2018-06-19 04:03:51
Document Index: 489735655

Matched Legal Cases: ['Application No. 6', 'Application No. 2001', 'Application No. 2001', 'Application No. 10223502', 'Application No. 2001', 'Application No. 2003']

US7165978B2 - Socket for semiconductor device - Google Patents
Socket for semiconductor device Download PDF
US7165978B2
US7165978B2 US11448873 US44887306A US7165978B2 US 7165978 B2 US7165978 B2 US 7165978B2 US 11448873 US11448873 US 11448873 US 44887306 A US44887306 A US 44887306A US 7165978 B2 US7165978 B2 US 7165978B2
US11448873
US20060228916A1 (en )
Ryo Ujike
The semiconductor socket is mainly comprised of a socket body 20 fixed to the printed wiring board 22, a plurality of contact terminals 24 ai (i=1 to n; n is a positive integer) disposed in a contact accommodating section 20 a located in an central area of the socket body 20, for electrically connecting a semiconductor device described later with the printed wiring board 22, a cover member 30 supported by the socket body 20 to be movable upward/downward, for transmitting an operative force to a latch mechanism described later, a positioning member 34 supported by the socket body 20 in a detachable manner, for accommodating therein a semiconductor device 36 to be tested and locating the latter to the contact terminals 24 ai in electrode sections of the semiconductor device 36, and a latch mechanism including pressing members 26 and 28 for holding the respective electrode sections of the semiconductor device 36 accommodated in the positioning member 34 while pressing the respective electrode sections of the semiconductor device 36 toward the plurality of contact terminals 24 ai.
The semiconductor device 36 made available for such a semiconductor device socket is a generally square-shaped semiconductor element, for example, of a BGA type or a LGA type having an electrode surface on which a plurality of electrode sections are formed in the vertical and horizontal directions.
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.
The proximal end section 26E is supported moveably rotationally at the lower end of the arm section 30H via the connecting pin 32. A guide pin 26P slidably engaged with the inner groove 20 g is provided in the connecting section 26C. As shown in FIG. 4, the guide pin 26P occupies a position in the vicinity of the closed end of the inner groove 20 g when the pressing member 26 is in a pressed state, while as shown in FIG. 3, occupies a position in the vicinity of the open end of the inner groove 20 g as the pressing member 26 is at the position in readiness. At that time, the connecting section 26C and the touch portion 26T are projected outwardly via the recess 20 b.
A distance LA shown in FIG. 4 from a center of the proximal end section 26E to an end of the touch portion 26T is set so that the end reaches a predetermined position in the outer peripheral region of the semiconductor device 36 or a semiconductor device 42 described later and the distance LA is shorter than a distance LC from the center of the hole at the proximal end section 26E to the proximal end of the arm section 30H of the cover member 30.
Thereby, the latch mechanism is formed as a pressing member driving mechanism by the pressing members 26 and 28, the cover member 30 and the inner groove 20 g.
Accordingly, when the cover member 30 is applied with an operative force in the direction shown in FIG. 5 by an arrow from a position shown in FIG. 4 to a position shown in FIG. 5, the pressing member 26 is made to move rotationally about the connecting pin 32 to occupy a reversely standing-up position between the arm portion 30H directly beneath a frame portion of the cover member 30. As a result, as shown in FIG. 5, part of the touch portion 26T, 28T and part of the connecting section 26C, 28C of the pressing member 26, 28 are bulged outwardly from the end of the bottom of the socket body 20 and the end of the cover member 30.
At that time, the touch portion 26T of the pressing member 26 and the touch portion 28T of the pressing member 28 are made to move rotatationally generally at the same timing to press the semiconductor element 36 toward the contact terminals 24 ai.
When a test signal is fed to the input/output section of the printed wiring board 22 while the cover member 30 is maintained at the uppermost position, the test signal is transmitted via the contact terminals 24 ai to the semiconductor element 36. If the abnormality is detected in the circuit, an abnormality-detecting signal is generated from the semiconductor element 36 and transmitted via the input/output section to an external diagnostic system.
In a waiting state in which the pressing member 48 reversely stands up, the guide pin occupies a position in the vicinity of an open end of the inner groove 20 g. At that time, the connecting section 48C and the touch portion 48T are bulged outwardly through the recess 20 b.
A distance from a center of the hole in the proximal end section 48E to the end of the touch portion 48T is selected so that the touch portion 48T reaches a predetermined position in the outer peripheral region of the semiconductor device 36 or 42 and the distance is shorter than a distance from the center of the hole of the proximal end section 48E to the proximal end of the arm section 30H of the cover member 30.
When the pressing member 50 is at the position in readiness in which it reversely stands up, the guide pin is located in the vicinity of the open end of the inner groove 20 g. At that time, the connecting section 50C and the touch portion 50T are bulged outwardly through the recess 20 b.
A distance from a center of the hole of the proximal end section 50E to the end of touch portion 50T is selected in the same manner as the pressing member 48.
In a waiting state in which the pressing member 28 reversely stands up, the guide pin is located in the vicinity of the open end of the inner groove. At that time, the connecting section 52C and the touch portion 52T are bulged outwardly through the recess 20 b.
A distance from a center of the hole in the proximal end section 52E to the end of the touch portion 52T is selected so that the touch portion reaches a predetermined position in the outer peripheral region of the semiconductor device 36 or 42 and the distance is shorter than a distance from the center of the hole in the proximal end section 52E to a proximal end of the arm section 30H of the cover member 30.
The cover member 84 has an arm section (not shown) engaged with and pushing arm receiving sections provided at proximal ends of the pressing members 25 and 27, which arm section is formed at a lower end of the convex portion 84P while being opposed to the recess 80 b. A lower end of the section is projected toward the arm receiving section and the recess 80 b.
The convex portion 84P has an opening 84 b for allowing the pressing members 25 and 27 to pass through the same. The opening 84 b communicates the interior of the cover member 84 to the exterior thereof.
The cover member 86 has an arm section (not shown) engaged with the proximal ends of the pressing members 26 and 28 while being opposed to the recess 90 b. A lower end of the section is projected toward the recess 90 b.
The convex portion 86P has an opening 86 b for allowing the pressing members 25 and 27 to pass through the same. The opening 86 b communicates the interior of the cover member 86 to the exterior thereof.
The cover member 86′ has arm sections (not shown) at a lower end of the convex portion 86′b, engageable with the pressing members 25 and 27, respectively. A lower end of the arm section is projected toward the recess 90′b.
The convex portion 86′P has an opening 86′b for allowing the pressing members 25 and 27 to pass through the same. The opening 86′b communicates the interior of the cover member 86′ to the exterior thereof.
A lower end of an arm section of the cover member 100 is projected toward the recess 102 b.
An opening 100 b is formed in a portion of the cover member 100 corresponding to the pressing members 25 and 27 and the convex portion 102P of the socket body 102 as shown in FIG. 33.
Also in this structure, as shown in FIG. 38, when the are section 112A of the cover member 112 is lowered from a position shown in FIG. 35, the pressing members 114 and 116 are made to rotate away from each other about the rotary centers thereof so that each is reversely stood up in the opening 112 b at a position directly beneath the frame portion of the cover member 112. As a result, as shown in FIG. 39, part of the proximal end section and the connecting section of the pressing member 114, 116 is bulged outward from the respective side wall of the socket body 110. At this time, the slider member 119 is moved as shown in FIG. 40, and after the semiconductor device 36, for example, is located directly above the positioning member 113 as shown in FIG. 39, is mounted to the positioning member 113 through the opening 112 a.
Then, when the cover member 112 is elevated, the pressing members 114 and 116 return to a state shown in FIG. 36 due to the bias of the coil springs 118 to hold the semiconductor device 36 or 42.
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.
The semiconductor device socket includes a socket body 120 fixed onto the printed wiring board 22, a plurality of contact terminals 124 ai (i=1 to n, n is a positive integer) arranged on opposite sides around a semiconductor device accommodating section 120 a in a central region of the socket body 120, for electrically connecting a semiconductor device 136 described later with the printed wiring board 22, a cover member 130 held by the socket body 120 to be movable upward and downward, for transmitting the operative force to an engaged end, positioning sections 134 held by the socket body 120 in a detachable manner, for accommodating the semiconductor element 136 and locating a group of terminals of the semiconductor element 136 to the contact terminals 124 ai.
The semiconductor device accommodating section 120 a in the upper portion of the socket body 120 includes a flat surface on which a package of the semiconductor element 136 is placed, and the positioning sections 134 engageable with four corners of the mounted package of the semiconductor element 136. The flat surface is formed generally parallel to the surface of the printed wiring board 22 at the uppermost end of the socket body 120. The positioning sections 134 are formed at four positions on opposite ends of the flat surface. Thereby, when the package of the semiconductor element 136 is placed on the flat surface, the four corners of the package are engaged with the positioning sections 134 to locate the terminal group of the semiconductor element 136 to the contact terminals 124 ai. The semiconductor element 136 has, for example, a package of SOP type.
The proximal end of the stationary terminal section 126S is formed at an end of the one branch of the stationary section integral therewith. At this time, an axial length of the stationary terminal section 126S is equal to an axial length of the stationary terminal section 126S of the contact terminal 124 ai. In this regard, a position of a proximal end of the stationary terminal section 126S is closer to a side surface of the socket body 120 in comparison with a position of a proximal end of the stationary terminal section 124S of the contact terminal 124 ai.
Accordingly, also in the contact terminal 125 ai, the same motion as the above-described motion of the contact terminal 124 ai is carried out in accordance with the upward/downward motion of the cover member 130.
A proximal end of the stationary terminal section 146S is formed at an end of one branch of the stationary section to be integral therewith. At this time, an axial length of the stationary terminal section 146S is equal to an axial length of the stationary terminal section 44S of the contact terminal 144 ai. In this regard, a position of the proximal end of the stationary terminal section 146S in the stationary section is closer to a side surface of the socket body 120 in comparison with a position of the proximal end of the stationary terminal section 144S of the contact terminal 144 ai.
Accordingly, also in the contact terminal 146 ai, the same operation as that of the contact terminal 144 ai described above is carried out in accordance with the upward and downward motion of the cover member 130′.
In this structure, when the test of the semiconductor element 136 is carried out, a tip end of an arm of a work robot not shown is in contact with the upper surface of the cover member 130′ to move the cover member 130′ upward and downward so that the semiconductor element 136 is mounted to and detached from the accommodating section 120 a.
In the embodiment shown in the above-described FIG. 50, the adjacent semiconductor device sockets are deviated from each other by a predetermined dimension SH in the Y-coordinate direction vertical to the X-coordinate direction so that a position of the contact terminal 124 ai in one semiconductor device socket is between the contact terminals 144 ai and 146 ai in the adjacent other semiconductor device socket.
The semiconductor device socket includes a socket body 160 to be fixed onto the printed wiring board 22, a contact terminal group CG consisting of a plurality of contact terminals 166 ai and 168 ai (i=1 to n, n is a positive integer) arranged opposite four sides around a semiconductor device accommodating section 160 a in a central region of the socket body 160, for electrically connecting a semiconductor element SDV described later to the printed wiring board 22, a cover member 162 held by the socket body 160 to be movable upward and downward, for transmitting an operative force to a lever mechanism described later, a positioning section 170 held by the socket body 160 in a detachable manner, for accommodating the semiconductor element SDV and locating the terminal group of the semiconductor element SDV to the contact terminals 166 ai and 168 ai.
On the outer circumference of the respective side in the socket body 160, as shown in FIG. 24, two elongate grooves 160G are formed parallel to each other and generally vertical to the surface of the printed wiring board 22. A claw of the cover member 162 described later is engaged with the respective groove 160G in a slidable manner.
The contact terminal 168 ai is made, for example, of a thin metallic sheet material to have, as shown in FIG. 53A, the same structure as in the contact terminal 166 ai, except for a position of the stationary terminal section 168S. A position of a proximal portion of the stationary terminal section 168S is father from the outer surface of the socket body 160 in comparison with a position of the proximal portion of the stationary terminal section 166S in the contact terminal 166 ai.
The lever mechanism includes a lever member 164 held for rotation by each of four bearings 160BE provided at four position around the positioning section 170.
The lever member 164 includes a proximal portion 164B engaged for rotation with a generally arcuate bearing surface in the bearing 160BE, an engagement end section 164K, one end of which is formed integral with the proximal portion and in contact with the cam surface of the cover member 162 as well as rotating thereby, and an arm 164A engaged with a bending portion of the curved section of the contact terminal 166 ai and 168 ai.
The proximal portion 164B has an arcuate lower end supported by a generally arcuate bearing surface in the bearing 160BE. Also, the proximal portion 164B has an opening 166 e between the engagement end section 164K and the arm section 164A, into which a bending portion of the curved section in contact terminal 166 ai and 168 ai is inserted.
At this time, part of the engagement end section 164K of the lever member 164 is projected outward from a state retreated inside shown in FIG. 53A. The operative force to lower the cover member 162 must be larger than a resultant force of pressures applied to contact points (points of application) at which tip ends of the engagement end sections 164K of the lever members 164 are brought into contact with the cam surface 162CA of the cover member 162 when the contact 166C of the contact terminal 166 ai and a tip end of the lever member 164 are made to rotate in the clockwise direction. Since the pressure applied to the contact point (point of application) is the multiplication of a spring constant of the curved section of the contact terminals 166 ai and 168 ai with the displacement of the rotary angle, it is inversely proportional to a distance LA from the contact point Cp to the rotary center Co of the proximal portion 164B of the lever member 164. Accordingly, by extending the length of the engagement end section 164K of the lever member 164 until the tip end thereof is projected outside via the cut 162E, the distance LA becomes longer than the corresponding distance LB of the lever member 180 in the conventional apparatus as shown in FIG. 66, whereby the operative force for descending the cover member 162 is reduced in comparison with the conventional apparatus. The lever member 180 includes a proximal portion 180B engaged in a rotatable manner with a generally arcuate bearing surface in the bearing section 160BE, an engagement end section 180K formed integral with the proximal portion at one end and brought into contact in a rotatable manner with the cam surface of the cover member 162, and an arm section 180A engaged with the curved sections 166B of the contact terminals 166 ai and 168 ai.
Next, the semiconductor element SDV sucked and held by the conveyor arm is lowered through the opening 162 a of the cover member 162, and positioned and mounted to the accommodating section 170A. Subsequently, the cover member 162 is elevated while the tip end of an arm of the work robot is in contact with the upper surface of the cover member 162, and reaches to the uppermost position from the opened position due to the bias of the coil springs SP and the recovery force of the contact terminals 180 ai and 182 ai.
At this time, the contact terminals 166 ai and 168 ai are made to rotate generally at the same timing to press the terminals of the semiconductor element SDV by the contacts 166C.
US11448873 2002-12-17 2006-06-08 Socket for semiconductor device Active US7165978B2 (en)
JP2002-365724 2002-12-17
JP2002365724 2002-12-17
JP2003393067A JP3803099B2 (en) 2002-12-17 2003-11-21 Semiconductor device socket
JP2003-393067 2003-11-21
US10735882 US7118386B2 (en) 2002-12-17 2003-12-16 Socket for semiconductor device
US11448873 US7165978B2 (en) 2002-12-17 2006-06-08 Socket for semiconductor device
US10735882 Division US7118386B2 (en) 2002-12-17 2003-12-16 Socket for semiconductor device
US20060228916A1 true US20060228916A1 (en) 2006-10-12
US7165978B2 true US7165978B2 (en) 2007-01-23
ID=32828735
US10735882 Active US7118386B2 (en) 2002-12-17 2003-12-16 Socket for semiconductor device
US11448873 Active US7165978B2 (en) 2002-12-17 2006-06-08 Socket for semiconductor device
US11448899 Active US7204708B2 (en) 2002-12-17 2006-06-08 Socket for semiconductor device
US11448900 Active US7278868B2 (en) 2002-12-17 2006-06-08 Socket for semiconductor device
US (4) US7118386B2 (en)
JP (1) JP3803099B2 (en)
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