US20170273176A1 - Actuation mechanisms for electrical interconnections - Google Patents
Actuation mechanisms for electrical interconnections Download PDFInfo
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- US20170273176A1 US20170273176A1 US15/614,182 US201715614182A US2017273176A1 US 20170273176 A1 US20170273176 A1 US 20170273176A1 US 201715614182 A US201715614182 A US 201715614182A US 2017273176 A1 US2017273176 A1 US 2017273176A1
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- pin
- base
- spring
- collar
- interconnections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0266—Marks, test patterns or identification means
- H05K1/0268—Marks, test patterns or identification means for electrical inspection or testing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
- H01L2224/161—Disposition
- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/115—Via connections; Lands around holes or via connections
- H05K1/116—Lands, clearance holes or other lay-out details concerning the surrounding of a via
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4046—Through-connections; Vertical interconnect access [VIA] connections using auxiliary conductive elements, e.g. metallic spheres, eyelets, pieces of wire
Definitions
- Embodiments described herein pertain to electrical devices. Some embodiments relate to electrical interconnections involving integrated circuit packages and circuit boards.
- Many electronic items including desktop, laptop, and tablet computers, cellular phones, and other electronic items, usually have one or more electrical devices, such as a memory device to store information, a processor to process information, or both the memory device and the processor.
- the device may be part of an integrated circuit (IC) package.
- Information exchanged between the device of the IC package and other devices may be conducted in the form of electrical signals passing through electrical connections between the IC package and the other devices.
- the electrical connections may be formed in part by conductive connections (e.g., solder balls) located on the IC package and interconnections located on a circuit board. In some cases, such electrical connections may be temporarily formed for testing the device during a test. Factors such as package warpage and manufacturing tolerances may degrade such electrical connections. Designing electrical interconnections to account for such factors may sometimes pose a challenge.
- FIG. 1 shows a block diagram of an electronic arrangement including interconnections for providing electrical connections between an electronic assembly and a base, according to some embodiments described herein.
- FIG. 2A , FIG. 2B , FIG. 2C , and FIG. 2D show different views of interconnections including a crank-shaped spring, according to some embodiments described herein.
- FIG. 3A , FIG. 3B , FIG. 3C , and FIG. 3D show different views of interconnections including a rod and a spring, according to some embodiments described herein.
- FIG. 4A , FIG. 4B , FIG. 4C , and FIG. 4D show different views of interconnections including a volute spring, according to some embodiments described herein.
- FIG. 1 shows a block diagram of an electronic arrangement 100 including interconnections 110 for providing electrical connections between an electronic assembly 120 and a base 130 .
- Base 130 may include a circuit board (e.g., a printed circuit board, such as a motherboard).
- Electronic assembly 120 may include an integrated circuit (IC) package or other electronic devices.
- Electronic assembly 120 may include conductive contacts (e.g., solder balls) 121 to be coupled to respective interconnections 110 .
- Electronic assembly 120 may include a device 122 attached to a substrate (e.g., a package substrate) 123 through conductive contacts (e.g., solder balls) 124 .
- Substrate 123 may include conductive paths (not shown) coupled to conductive contacts 121 and 124 .
- Device 122 may include a semiconductor (e.g., silicon) die.
- the die may include circuitry to perform one or more functions, such as processing information, storing information, or other functions.
- the die in device 122 may include a processor (e.g., including transistors, arithmetic logic units, and other components) that may include a central processing unit (CPU), a graphics processing unit (GPU), or both.
- the processor may also include application specific integrated circuits (ASIC).
- Examples of the IC package in electronic assembly 120 may include a ball grid array (BGA) packaging type, land grid array (LGA) packaging type, pin grid array (PGA) packaging type, or other types of packaging.
- Electronic assembly 120 may be included in electronic items such as desktop, laptop, and tablet computers, e-readers (e.g., e-book readers), personal digital assistants (PDAs), cellular telephones, smart phones, servers, web appliances, set-top boxes (STBs), network routers, network switches, network bridges, or other types of electronic items.
- BGA ball grid array
- LGA land grid array
- PGA pin grid array
- base 130 may be coupled to an analyzer 140 through an interface 150 .
- Interface 150 may include conductive paths (e.g., electrical conductors) coupled to interconnections 110 to allow communication (e.g., in the form of signals) between analyzer 140 and electronic assembly 120 through interconnections 110 and interface 150 .
- Analyzer 140 may include a tester (e.g., a computer) to test electronic assembly 120 (e.g., to test device 122 ), base 130 , or both.
- device 122 may be may be a device under test (DUT).
- DUT device under test
- FIG. 1 shows only five interconnections 110 as an example.
- the number of interconnections 110 may vary.
- electronic arrangement 100 may include numerous interconnections 110 arranged in rows and columns.
- FIG. 1 show interconnections 110 located in only a portion (e.g., top portion) of base 130 .
- Interconnections 110 may include components located in other portions (e.g., middle and bottom portions) of base 130 .
- interconnections 110 may include interconnections having components described in more detail below with reference to FIG. 2A through FIG. 4D .
- FIG. 2A , FIG. 2B , FIG. 2C , and FIG. 2D show different views of interconnections 210 and a base 230 , according to some embodiments described herein.
- FIG. 2A shows a side view of interconnections 210 and base 230 .
- FIG. 2B shows a perspective view (with respect to x, y, and z directions) of a portion of one of interconnections 210 of FIG. 2A .
- FIG. 2C shows a cross section of a portion of interconnections 210 and base 230 of FIG. 2A .
- FIG. 2D shows a top view of a via 234 of base 230 of FIG. 2C .
- Interconnections 210 and base 230 in FIG. 2A through FIG. 2D may correspond to interconnections 110 and base 130 , respectively, of FIG. 1 .
- FIG. 2A shows only three interconnections 210 as an example. The number of interconnections 210 may vary.
- base 230 may include surfaces (e.g., top and bottom surfaces) 231 and 232 , and an opening 233 extending between surfaces 231 and 232 at each of interconnections 210 .
- Base 230 may include a via 234 ( FIG. 2C and FIG. 2D ) associated with opening 233 .
- Via 234 may include an electrically conductive via (e.g., a metal via). At least a portion of via 234 may be located inside (e.g., near surface 231 ) opening 233 .
- Via 234 may include a sidewall 235 having a cylindrical shape (e.g., a cylindrical sidewall 235 ).
- Base 230 may include conductive paths (not shown) coupled to via 234 to provide electrical communication (e.g., in the form of signals) to and from one or more of interconnections 210 through via 234 .
- electrical communication may include signals carrying power supply, data information, control information, or other kinds of information,
- Each of interconnections 210 may include electrical components and mechanical components.
- the electrical components may include a collar 211 and a pin 215 having conductive material (e.g., metal such as copper).
- the mechanical components may include a spring 260 .
- collar 211 may include portions 212 and 213 .
- Portion 212 ( FIG. 2B ) may have a cylindrical shape that may form a slender cylinder.
- Portion 212 ( FIG. 2C ) may be located inside opening 233 of base 230 and coupled to via 234 .
- Portion 212 may directly contact sidewall 235 of via 234 and conform to sidewall 235 .
- Portion 212 may be inserted into via 234 , such that portion 212 may be coupled to via 234 by press fit coupling.
- Portion 213 (FIG. 2 B) may have a ring shape with a dimension (e.g., outer diameter) greater than a diameter of the opening 233 .
- portion 213 may form a stopper (e.g., a mechanical hinder) to prevent collar 211 (e.g., entire collar 211 ) from sliding into via 234 .
- a stopper e.g., a mechanical hinder
- portion 213 may be located outside via 234 and outside opening 233 .
- collar 211 may include a slit 214 extending along the length (e.g., in the z-direction) of collar 211 .
- Slit 214 may separate portion 212 such that portion 212 may not be a continuous portion (e.g., at least part of portion 212 is void of material at slit 214 ).
- Slit 214 may also separate portion 213 such that portion 213 may not be a continuous portion (e.g., at least part of portion 213 is void of material at slit 214 ).
- collar 211 may not include a slit (e.g., slit 214 ) in one or both of portions 212 and 213 .
- portion 212 may be a continuous portion
- portion 213 may be a continuous portion
- both portions 212 and 213 may be continuous portions.
- Pin 215 ( FIG. 2B and FIG. 2C ) includes ends (e.g., pin heads) 216 and 217 .
- End 216 ( FIG. 2C ) may be located outside base 230 (e.g., outside opening 233 of base 230 ).
- End 217 may be located inside base 230 (e.g., inside opening 233 of base 230 ).
- Pin 215 may be electrically coupled (e.g., directly contacting) collar 211 .
- a portion between ends 216 and 217 a body) of pin 215 may directly contact portion 212 of collar 211 .
- Pin 215 may be arranged to move (e.g., slide) in a direction (e.g., z-direction) between ends 216 and 217 while maintaining electrical contact with collar 211 .
- Collar 211 , pin 215 , and via 234 may establish an electrical connection (e.g., a temporary electrical connection during a test) to allow monitoring of electrical communication to and from a device (e.g., a DUT, such as device 122 of FIG. 1 ) coupled to pin 215 of each of interconnections 210 .
- a device e.g., a DUT, such as device 122 of FIG. 1
- Spring 260 may include a crank-shaped spring.
- spring 260 may include multiple segments (e.g., three segments as shown in FIG. 2A ) that are substantially straight. The multiple segments may form different angles (e.g., different bends) in spring 260 .
- Spring 260 includes ends 261 and 262 . End 261 may be coupled (e.g., directly contacting) to end 217 of pin 215 FIG. 2C ). End 262 may be coupled (e.g., fixed) to a fixture 239 .
- Spring 260 may include conductive material (e.g., metal). Alternatively, spring 260 may include non-conductive material (e.g., non-metal material), such that spring 260 may not be electrically coupled to pin 215 .
- Spring 260 may form a mechanical actuator to enable pin 215 to move (e.g., slide) in a direction between ends 216 and 217 when a force is applied to at least one of ends 216 and 217 .
- spring 260 may be compressed (e.g., in the z-direction) when an electronic assembly (e.g., electronic assembly 120 of FIG. 1 ) is attached to pin 215 (e.g., pressed against pin 215 in the z-direction) of each of interconnections 210 .
- the arrangement of spring 260 and pin 215 may be associated with distributed compliant mechanism, providing functions of spring and load transfer.
- each of interconnections 210 may have a shorter electrical path formed by pin 215 , collar 211 , and via 234 .
- This may lead to a lower profile (e.g., smaller interconnection dimension in the z-direction) for interconnections 210 between base 230 and other electronic devices (e.g., between base 230 and electronic assembly 120 of FIG. 1 ).
- Lower profile may improve device electrical performance, such as signal integrity and power delivery.
- Each of interconnections 210 may have a relatively large pin stroke with adequate force to make electrical contact with another device (e.g., with electronic assembly 120 of FIG. 1 ).
- the pin stroke refers a distance that pin 215 may move (e.g., slide) from a reference point to another point (e.g., move in the z-direction).
- thinner and smaller device form factor e.g., in FIG. 1 , thinner device 120 , substrate 122 , or both
- a relatively large pin stroke may be needed to improve the quality of electrical connections (e.g., connections between base 230 and electronic assembly 120 of FIG.
- the arrangement of spring 260 and pin 215 may enable a large pin stroke (e.g., in comparison with a pogo-pin) by distributing the stress induced by displacement and load to the distributed spring mechanism.
- the pin stroke of pin 215 may be increased without increasing the length of pin 125 or decreasing the pin force. This may improve the quality of electrical connections between base 230 and other devices (e.g., electronic assembly 120 of FIG. 1 ) when package (e.g., substrate 123 ) warpage, manufacturing tolerances, or other undesirable factors are present.
- FIG. 3A , FIG, 3 B, FIG. 3C , and FIG. 3D show different views of interconnections 310 having a rod 370 between a pin 215 and a spring 360 , and a base 330 , according to some embodiments described herein.
- Interconnections 310 and base 330 in FIG. 3A through FIG. 3D may correspond to interconnections 110 and base 130 , respectively, of FIG. 1 .
- FIG. 3A shows only three interconnections 310 as an example. The number of interconnections 310 may vary.
- Interconnections 310 and base 330 may include elements similar to or identical to those of interconnections 210 and base 230 ( FIG. 2A through FIG. 2D ), respectively. Thus, for simplicity, similar or identical elements between interconnections 210 and 310 and between bases 230 and 330 are given the same reference numbers. The description of such similar or identical elements is not repeated in the description of FIG. 3A through FIG. 3D .
- each of interconnections 310 may include electrical components formed by collar 211 and pin 215 , and mechanical components formed by spring 360 and rod 370 .
- the arrangement of the spring 360 , rod 370 , and pin 215 may be associated with lumped compliant mechanism.
- Spring 360 may be coupled to end 217 of pin 215 through rod 370 , which enables transferring spring load to the pin 215 .
- Rod 370 may include conductive material (e.g., metal).
- rod 370 may include non-conductive material (e.g., non-metal material), such that spring 360 may not be electrically coupled to pin 215 .
- Spring 360 may include a coil spring having ends 361 and 362 .
- End 361 may be coupled (e.g., directly contacting) to end 372 of rod 370 .
- End 362 may he coupled (e.g., fixed) to base 330 (e.g., positioning on the bottom of base 330 ).
- spring 360 may include a planar spring.
- FIG. 3A and FIG. 3C shows only one spring 360 as an example. Multiple springs may he used. For example, instead of having only one spring 360 , two or more springs similar to or identical to spring 360 may be arranged (e.g., stacked) on top of each other inside opening 233 .
- the arrangement of spring 360 , rod 370 , and pin 215 may allow interconnections 310 to have a relatively lower profile and larger pin stroke similar to that of spring 260 and pin 215 , as described above with reference to FIG. 2A through FIG. 2D .
- FIG. 4A , FIG. 4B , FIG. 4C , and FIG. 4D show different views of interconnections 410 and a base 430 , according to some embodiments described herein.
- FIG. 4A shows a side view of interconnections 410 and base 430 .
- FIG. 4B shows a perspective view (with respect to x, y, and z directions) of a portion of one of interconnections 410 of FIG. 4A
- FIG. 4C shows a cross section of a portion of interconnections 410 and base 430 of FIG. 4A .
- FIG. 4D shows a top view of a via 434 of base 430 of FIG. 4C .
- Interconnections 410 and base 430 in FIG. 4A through FIG. 4D may correspond to interconnections 110 and base 130 , respectively, of FIG. 1 .
- FIG. 4A shows only three interconnections 410 as an example. The number of interconnections 410 may vary.
- Base 430 may include elements similar to or identical to those of base 230 ( FIG. 2A , FIG. 2C , and FIG. 2D ).
- base 430 may include surfaces 431 and 432 , an opening 433 and a via 434 (having sidewall 435 ) at each of interconnections 410 .
- Base 430 may include conductive paths (not shown) coupled to via 434 to provide electrical communication to and from one or more of interconnections 410 through via 434 .
- each of interconnection 410 may include electrical components and mechanical components.
- the electrical components may include a collar 411 ( FIG. 4B ) and a pin 415 ( FIG. 4B and FIG. 4C ) having conductive material (e.g., metal such as copper).
- the mechanical components may include a volute spring 460 ( FIG. 4B and 4C ) having conductive material. Volute spring 460 may provide relatively large contact areas contacting collar 411 and pin 415 and provide pin lateral stability.
- Collar 411 may include portions 412 and 413 ( FIG. 4B and FIG. 4C ).
- Portion 412 may have a cylindrical shape that may form a plump cylinder surrounding at least a portion of volute spring 460 .
- Portion 412 ( FIG. 4C ) may be located inside opening 433 of base 430 and coupled to via 434 .
- Portion 412 may directly contact sidewall 435 ( FIG. 4D ) of via 434 and conform to sidewall 435 .
- Portion 412 may be inserted into via 434 , such that portion 412 . may be coupled to via 434 by press fit coupling.
- Portion 413 of collar 411 may be located outside opening 433 .
- Portion 413 ( FIG.
- the stopper may also set a reference z-height at the top (e.g., near surface 431 ) of base 430 that may eliminate manufacturing tolerance concern on the thickness of base 430 .
- collar 411 may include a slit 414 extending along the length (e.g., in the z-direction) of collar 411 .
- Slit 414 may separate portion 412 such that portion 412 may not be a continuous portion (e.g., at least part of portion 412 is void of material at slit 414 ).
- Slit 414 may also separate portion 413 such that portion 413 may not be a continuous portion (e.g., at least part of portion 413 is void of material at slit 414 ).
- collar 411 may not include a slit (e.g., slit 414 ) in one or both portions 412 and 413 .
- portion 412 be a continuous portion
- portion 413 be a continuous portion
- both portions 412 and 413 may be continuous portions.
- Pin 415 ( FIG. 4B and FIG. 4C ) includes ends (e.g., pin heads) 416 and 417 .
- End 416 may be located outside base 430 (e.g., outside opening 433 of base 430 ).
- End 417 may be located inside base 430 (e.g., inside opening 433 of base 430 ).
- End 417 may include a feature (e.g., a snap-in feature) that may allow pin 415 to be inserted (e.g., snapped) into volute spring 460 and collar 411 .
- Pin 415 ( FIG. 4A and FIG. 4C ) may be electrically coupled (e.g., directly contacting) collar 411 . For example, as shown in FIG.
- the portion between ends 416 and 417 (e.g., a body) of pin 415 may directly contact portion 412 of collar 411 .
- Pin 415 may be arranged to move (e.g., slide) in a direction (e.g., z-direction) between ends 416 and 417 while maintaining electrical contact with volute spring 460 and collar 411 .
- volute spring 460 may surround at least a portion of pin 415 between ends 416 and 417 .
- Portion 412 may hold and surround at least a portion of the volute spring 460 and a portion of pin 415 , such that at least a portion of volute spring 460 may be between portion 412 . of collar 411 and a portion of pin 415 .
- Collar 411 , pin 415 , volute spring 460 , and via 434 may establish an electrical connection (e.g., a temporary electrical connection) to allow monitoring of electrical communication (e.g., in the form of electrical signals) to and from a device (e.g., a DUT, such as device 122 of FIG. 1 ) coupled to pin 415 of each of interconnections 410 .
- an electrical connection e.g., a temporary electrical connection
- electrical communication e.g., in the form of electrical signals
- Volute spring 460 may form a mechanical actuator to enable pin 415 to move (e.g., slide) in a direction between ends 416 and 417 when a force is applied to at least one of ends 416 and 417 .
- volute spring 460 may be compressed (e.g., in the z-direction) when an electronic assembly (e.g., electronic assembly 120 of FIG. 1 ) is attached to pin 415 (e.g., pressed against pin 415 in the z-direction) of each of interconnections 410 .
- Each of interconnections 410 may have a shorter electrical path (e.g., formed by pin 415 , spring 460 , collar 411 , and via 434 ) in comparison with a conventional interconnection (e.g., a pogo-pin). This may lead to a lower profile for interconnections 410 between base 430 and other electronic devices (e.g., between base 430 and electronic assembly 120 of FIG. 1 ). Each of interconnections 410 may also have a relatively large pin stroke in comparison with a conventional interconnection (e.g., a pogo-pin).
Abstract
Some embodiments described herein include apparatuses and methods of forming such apparatuses. In one such embodiment, an apparatus may include an electronic arrangement, a first die, and a second die coupled to the first die and the electronic arrangement. The electronic arrangement may include an opening. At least a portion of the die may occupy at least a portion of the opening in the electronic arrangement. Other embodiments including additional apparatuses and methods are described.
Description
- This application is a divisional of U.S. Patent Application Ser. No. 13/707,032, filed Dec. 6, 2012, which is incorporated by reference herein in its entirety.
- Embodiments described herein pertain to electrical devices. Some embodiments relate to electrical interconnections involving integrated circuit packages and circuit boards.
- Many electronic items including desktop, laptop, and tablet computers, cellular phones, and other electronic items, usually have one or more electrical devices, such as a memory device to store information, a processor to process information, or both the memory device and the processor. The device may be part of an integrated circuit (IC) package. Information exchanged between the device of the IC package and other devices may be conducted in the form of electrical signals passing through electrical connections between the IC package and the other devices. The electrical connections may be formed in part by conductive connections (e.g., solder balls) located on the IC package and interconnections located on a circuit board. In some cases, such electrical connections may be temporarily formed for testing the device during a test. Factors such as package warpage and manufacturing tolerances may degrade such electrical connections. Designing electrical interconnections to account for such factors may sometimes pose a challenge.
-
FIG. 1 shows a block diagram of an electronic arrangement including interconnections for providing electrical connections between an electronic assembly and a base, according to some embodiments described herein. -
FIG. 2A ,FIG. 2B ,FIG. 2C , andFIG. 2D show different views of interconnections including a crank-shaped spring, according to some embodiments described herein. -
FIG. 3A ,FIG. 3B ,FIG. 3C , andFIG. 3D show different views of interconnections including a rod and a spring, according to some embodiments described herein. -
FIG. 4A ,FIG. 4B ,FIG. 4C , andFIG. 4D show different views of interconnections including a volute spring, according to some embodiments described herein. -
FIG. 1 shows a block diagram of anelectronic arrangement 100 includinginterconnections 110 for providing electrical connections between anelectronic assembly 120 and abase 130. according to some embodiments described herein.Base 130 may include a circuit board (e.g., a printed circuit board, such as a motherboard).Electronic assembly 120 may include an integrated circuit (IC) package or other electronic devices.Electronic assembly 120 may include conductive contacts (e.g., solder balls) 121 to be coupled torespective interconnections 110. -
Electronic assembly 120 may include adevice 122 attached to a substrate (e.g., a package substrate) 123 through conductive contacts (e.g., solder balls) 124.Substrate 123 may include conductive paths (not shown) coupled toconductive contacts Device 122 may include a semiconductor (e.g., silicon) die. The die may include circuitry to perform one or more functions, such as processing information, storing information, or other functions. For example, the die indevice 122 may include a processor (e.g., including transistors, arithmetic logic units, and other components) that may include a central processing unit (CPU), a graphics processing unit (GPU), or both. The processor may also include application specific integrated circuits (ASIC). - Examples of the IC package in
electronic assembly 120 may include a ball grid array (BGA) packaging type, land grid array (LGA) packaging type, pin grid array (PGA) packaging type, or other types of packaging.Electronic assembly 120 may be included in electronic items such as desktop, laptop, and tablet computers, e-readers (e.g., e-book readers), personal digital assistants (PDAs), cellular telephones, smart phones, servers, web appliances, set-top boxes (STBs), network routers, network switches, network bridges, or other types of electronic items. - As shown in
FIG. 1 ,base 130 may be coupled to ananalyzer 140 through aninterface 150.Interface 150 may include conductive paths (e.g., electrical conductors) coupled tointerconnections 110 to allow communication (e.g., in the form of signals) betweenanalyzer 140 andelectronic assembly 120 throughinterconnections 110 andinterface 150. Analyzer 140 may include a tester (e.g., a computer) to test electronic assembly 120 (e.g., to test device 122),base 130, or both. Thus, inelectronic arrangement 100,device 122 may be may be a device under test (DUT). -
FIG. 1 shows only fiveinterconnections 110 as an example. The number ofinterconnections 110 may vary. For example,electronic arrangement 100 may includenumerous interconnections 110 arranged in rows and columns. For simplicity,FIG. 1 show interconnections 110 located in only a portion (e.g., top portion) ofbase 130.Interconnections 110, however, may include components located in other portions (e.g., middle and bottom portions) ofbase 130. For example,interconnections 110 may include interconnections having components described in more detail below with reference toFIG. 2A throughFIG. 4D . -
FIG. 2A ,FIG. 2B ,FIG. 2C , andFIG. 2D show different views ofinterconnections 210 and abase 230, according to some embodiments described herein.FIG. 2A shows a side view ofinterconnections 210 andbase 230.FIG. 2B shows a perspective view (with respect to x, y, and z directions) of a portion of one ofinterconnections 210 ofFIG. 2A .FIG. 2C shows a cross section of a portion ofinterconnections 210 andbase 230 ofFIG. 2A .FIG. 2D shows a top view of a via 234 ofbase 230 ofFIG. 2C . -
Interconnections 210 andbase 230 inFIG. 2A throughFIG. 2D may correspond tointerconnections 110 andbase 130, respectively, ofFIG. 1 .FIG. 2A shows only threeinterconnections 210 as an example. The number ofinterconnections 210 may vary. - As shown in
FIG. 2A ,base 230 may include surfaces (e.g., top and bottom surfaces) 231 and 232, and anopening 233 extending betweensurfaces interconnections 210.Base 230 may include a via 234 (FIG. 2C andFIG. 2D ) associated withopening 233. Via 234 may include an electrically conductive via (e.g., a metal via). At least a portion of via 234 may be located inside (e.g., near surface 231)opening 233. Via 234 may include asidewall 235 having a cylindrical shape (e.g., a cylindrical sidewall 235).Base 230 may include conductive paths (not shown) coupled to via 234 to provide electrical communication (e.g., in the form of signals) to and from one or more ofinterconnections 210 through via 234. Such electrical communication may include signals carrying power supply, data information, control information, or other kinds of information, - Each of interconnections 210 (
FIG. 2A ,FIG. 2B , andFIG. 2C ) may include electrical components and mechanical components. The electrical components may include acollar 211 and apin 215 having conductive material (e.g., metal such as copper). The mechanical components may include aspring 260. - As shown in
FIG. 2B andFIG. 2C ,collar 211 may includeportions FIG. 2B ) may have a cylindrical shape that may form a slender cylinder. Portion 212 (FIG. 2C ) may be located inside opening 233 ofbase 230 and coupled to via 234.Portion 212 may directly contactsidewall 235 of via 234 and conform to sidewall 235.Portion 212 may be inserted into via 234, such thatportion 212 may be coupled to via 234 by press fit coupling. Portion 213 (FIG. 2B) may have a ring shape with a dimension (e.g., outer diameter) greater than a diameter of theopening 233. This may allowportion 213 to form a stopper (e.g., a mechanical hinder) to prevent collar 211 (e.g., entire collar 211) from sliding into via 234. Thus, as shown inFIG. 2C ,portion 213 may be located outside via 234 andoutside opening 233. - As shown in
FIG. 2B ,collar 211 may include aslit 214 extending along the length (e.g., in the z-direction) ofcollar 211.Slit 214 may separateportion 212 such thatportion 212 may not be a continuous portion (e.g., at least part ofportion 212 is void of material at slit 214).Slit 214 may alsoseparate portion 213 such thatportion 213 may not be a continuous portion (e.g., at least part ofportion 213 is void of material at slit 214). In an alternative structure,collar 211 may not include a slit (e.g., slit 214) in one or both ofportions portion 212 may be a continuous portion,portion 213 may be a continuous portion, or bothportions - Pin 215 (
FIG. 2B andFIG. 2C ) includes ends (e.g., pin heads) 216 and 217. End 216 (FIG. 2C ) may be located outside base 230 (e.g.,outside opening 233 of base 230).End 217 may be located inside base 230 (e.g., inside opening 233 of base 230).Pin 215 may be electrically coupled (e.g., directly contacting)collar 211. For example, as shown inFIG. 2C , a portion between ends 216 and 217 a body) ofpin 215 may directly contactportion 212 ofcollar 211.Pin 215 may be arranged to move (e.g., slide) in a direction (e.g., z-direction) between ends 216 and 217 while maintaining electrical contact withcollar 211. -
Collar 211,pin 215, and via 234 may establish an electrical connection (e.g., a temporary electrical connection during a test) to allow monitoring of electrical communication to and from a device (e.g., a DUT, such asdevice 122 ofFIG. 1 ) coupled to pin 215 of each ofinterconnections 210. - Spring 260 (
FIG. 2A ) may include a crank-shaped spring. For example,spring 260 may include multiple segments (e.g., three segments as shown inFIG. 2A ) that are substantially straight. The multiple segments may form different angles (e.g., different bends) inspring 260.Spring 260 includesends End 261 may be coupled (e.g., directly contacting) to end 217 ofpin 215FIG. 2C ).End 262 may be coupled (e.g., fixed) to afixture 239.Spring 260 may include conductive material (e.g., metal). Alternatively,spring 260 may include non-conductive material (e.g., non-metal material), such thatspring 260 may not be electrically coupled to pin 215. -
Spring 260 may form a mechanical actuator to enablepin 215 to move (e.g., slide) in a direction between ends 216 and 217 when a force is applied to at least one ofends spring 260 may be compressed (e.g., in the z-direction) when an electronic assembly (e.g.,electronic assembly 120 ofFIG. 1 ) is attached to pin 215 (e.g., pressed againstpin 215 in the z-direction) of each ofinterconnections 210. Thus, the arrangement ofspring 260 and pin 215 may be associated with distributed compliant mechanism, providing functions of spring and load transfer. - The arrangement of
spring 260,collar 211, and pin 215 may isolatespring 260 from an electrical path formed bypin 215,collar 211, and via 234. Thus, in comparison with a conventional interconnection having a spring included in an electrical path between two pin heads (e.g., a pogo-pin), each ofinterconnections 210 may have a shorter electrical path formed bypin 215,collar 211, and via 234. This may lead to a lower profile (e.g., smaller interconnection dimension in the z-direction) forinterconnections 210 betweenbase 230 and other electronic devices (e.g., betweenbase 230 andelectronic assembly 120 ofFIG. 1 ). Lower profile may improve device electrical performance, such as signal integrity and power delivery. - Each of
interconnections 210 may have a relatively large pin stroke with adequate force to make electrical contact with another device (e.g., withelectronic assembly 120 ofFIG. 1 ). The pin stroke refers a distance thatpin 215 may move (e.g., slide) from a reference point to another point (e.g., move in the z-direction). In some cases, thinner and smaller device form factor (e.g., inFIG. 1 ,thinner device 120,substrate 122, or both) may impact negatively to the planarity of semiconductor package (e.g.,electronic assembly 120 ofFIG. 1 ). In some of such cases, a relatively large pin stroke may be needed to improve the quality of electrical connections (e.g., connections betweenbase 230 andelectronic assembly 120 ofFIG. 1 ) that may be compromised when factors such as package warpage and manufacturing tolerances are present. In a conventional interconnection (e.g., a pogo-pin), it may be difficult (or unachievable in some cases) to increase pin stroke without decreasing pin force or increasing the length of the pin. However, if such a pin force is decreased in (e.g., in a pogo-pin) in order to increased pin stroke, electrical contact between the pin and a contact of a device (coupled to the pin) may be degraded (e.g., increased in resistance). - In
interconnections 210, however, the arrangement ofspring 260 and pin 215 may enable a large pin stroke (e.g., in comparison with a pogo-pin) by distributing the stress induced by displacement and load to the distributed spring mechanism. Thus, ininterconnections 210, the pin stroke ofpin 215 may be increased without increasing the length of pin 125 or decreasing the pin force. This may improve the quality of electrical connections betweenbase 230 and other devices (e.g.,electronic assembly 120 ofFIG. 1 ) when package (e.g., substrate 123) warpage, manufacturing tolerances, or other undesirable factors are present. -
FIG. 3A , FIG, 3B,FIG. 3C , andFIG. 3D show different views ofinterconnections 310 having arod 370 between apin 215 and aspring 360, and abase 330, according to some embodiments described herein.Interconnections 310 andbase 330 inFIG. 3A throughFIG. 3D may correspond tointerconnections 110 andbase 130, respectively, ofFIG. 1 .FIG. 3A shows only threeinterconnections 310 as an example. The number ofinterconnections 310 may vary. -
Interconnections 310 andbase 330 may include elements similar to or identical to those ofinterconnections 210 and base 230 (FIG. 2A throughFIG. 2D ), respectively. Thus, for simplicity, similar or identical elements betweeninterconnections bases FIG. 3A throughFIG. 3D . - As shown in
FIG. 3B and.FIG. 3C , each ofinterconnections 310 may include electrical components formed bycollar 211 andpin 215, and mechanical components formed byspring 360 androd 370. The arrangement of thespring 360,rod 370, and pin 215 may be associated with lumped compliant mechanism.Spring 360 may be coupled to end 217 ofpin 215 throughrod 370, which enables transferring spring load to thepin 215.Rod 370 may include conductive material (e.g., metal). Alternatively,rod 370 may include non-conductive material (e.g., non-metal material), such thatspring 360 may not be electrically coupled to pin 215. - Spring 360 (
FIG. 3C ) may include a coil spring having ends 361 and 362.End 361 may be coupled (e.g., directly contacting) to end 372 ofrod 370.End 362 may he coupled (e.g., fixed) to base 330 (e.g., positioning on the bottom of base 330). Alternatively,spring 360 may include a planar spring. -
FIG. 3A andFIG. 3C shows only onespring 360 as an example. Multiple springs may he used. For example, instead of having only onespring 360, two or more springs similar to or identical tospring 360 may be arranged (e.g., stacked) on top of each otherinside opening 233. - In comparison with conventional interconnections (e.g., pogo-pins), the arrangement of
spring 360,rod 370, and pin 215 may allowinterconnections 310 to have a relatively lower profile and larger pin stroke similar to that ofspring 260 andpin 215, as described above with reference toFIG. 2A throughFIG. 2D . -
FIG. 4A ,FIG. 4B ,FIG. 4C , andFIG. 4D show different views ofinterconnections 410 and abase 430, according to some embodiments described herein.FIG. 4A shows a side view ofinterconnections 410 andbase 430.FIG. 4B shows a perspective view (with respect to x, y, and z directions) of a portion of one ofinterconnections 410 ofFIG. 4A ,FIG. 4C shows a cross section of a portion ofinterconnections 410 andbase 430 ofFIG. 4A .FIG. 4D shows a top view of a via 434 ofbase 430 ofFIG. 4C . -
Interconnections 410 andbase 430 inFIG. 4A throughFIG. 4D may correspond tointerconnections 110 andbase 130, respectively, ofFIG. 1 .FIG. 4A shows only threeinterconnections 410 as an example. The number ofinterconnections 410 may vary. -
Base 430 may include elements similar to or identical to those of base 230 (FIG. 2A ,FIG. 2C , andFIG. 2D ). For example,base 430 may includesurfaces opening 433 and a via 434 (having sidewall 435) at each ofinterconnections 410.Base 430 may include conductive paths (not shown) coupled to via 434 to provide electrical communication to and from one or more ofinterconnections 410 through via 434. - As shown in
FIG. 4A ,FIG. 4B , andFIG. 4C , each ofinterconnection 410 may include electrical components and mechanical components. The electrical components may include a collar 411 (FIG. 4B ) and a pin 415 (FIG. 4B andFIG. 4C ) having conductive material (e.g., metal such as copper). The mechanical components may include a volute spring 460 (FIG. 4B and 4C ) having conductive material.Volute spring 460 may provide relatively large contactareas contacting collar 411 and pin 415 and provide pin lateral stability. - Collar 411 (
FIG. 4B ) may includeportions 412 and 413 (FIG. 4B andFIG. 4C ).Portion 412 may have a cylindrical shape that may form a plump cylinder surrounding at least a portion ofvolute spring 460. Portion 412 (FIG. 4C ) may be located inside opening 433 ofbase 430 and coupled to via 434.Portion 412 may directly contact sidewall 435 (FIG. 4D ) of via 434 and conform to sidewall 435.Portion 412 may be inserted into via 434, such thatportion 412. may be coupled to via 434 by press fit coupling.Portion 413 ofcollar 411 may be located outsideopening 433. Portion 413 (FIG. 4B ) may have a ring shape with a dimension (e.g., outer diameter) greater than a diameter of theopening 433. This may allowportion 413 to form a stopper (e.g., a mechanical hinder) to prevent collar 411 (e.g., entire collar 411) from sliding into via 434. The stopper may also set a reference z-height at the top (e.g., near surface 431) ofbase 430 that may eliminate manufacturing tolerance concern on the thickness ofbase 430. - As shown in
FIG. 4B ,collar 411 may include aslit 414 extending along the length (e.g., in the z-direction) ofcollar 411.Slit 414 may separateportion 412 such thatportion 412 may not be a continuous portion (e.g., at least part ofportion 412 is void of material at slit 414).Slit 414 may alsoseparate portion 413 such thatportion 413 may not be a continuous portion (e.g., at least part ofportion 413 is void of material at slit 414). In an alternative structure,collar 411 may not include a slit (e.g., slit 414) in one or bothportions portion 412 be a continuous portion,portion 413 be a continuous portion, or bothportions - Pin 415 (
FIG. 4B andFIG. 4C ) includes ends (e.g., pin heads) 416 and 417.End 416 may be located outside base 430 (e.g.,outside opening 433 of base 430).End 417 may be located inside base 430 (e.g., inside opening 433 of base 430).End 417 may include a feature (e.g., a snap-in feature) that may allowpin 415 to be inserted (e.g., snapped) intovolute spring 460 andcollar 411. Pin 415 (FIG. 4A andFIG. 4C ) may be electrically coupled (e.g., directly contacting)collar 411. For example, as shown inFIG. 4C , the portion between ends 416 and 417 (e.g., a body) ofpin 415 may directly contactportion 412 ofcollar 411.Pin 415 may be arranged to move (e.g., slide) in a direction (e.g., z-direction) between ends 416 and 417 while maintaining electrical contact withvolute spring 460 andcollar 411. - As shown in
FIG. 4B and.FIG. 4C , at least a portion ofvolute spring 460 may surround at least a portion ofpin 415 betweenends Portion 412 may hold and surround at least a portion of thevolute spring 460 and a portion ofpin 415, such that at least a portion ofvolute spring 460 may be betweenportion 412. ofcollar 411 and a portion ofpin 415. -
Collar 411,pin 415,volute spring 460, and via 434 may establish an electrical connection (e.g., a temporary electrical connection) to allow monitoring of electrical communication (e.g., in the form of electrical signals) to and from a device (e.g., a DUT, such asdevice 122 ofFIG. 1 ) coupled to pin 415 of each ofinterconnections 410. -
Volute spring 460 may form a mechanical actuator to enablepin 415 to move (e.g., slide) in a direction between ends 416 and 417 when a force is applied to at least one ofends volute spring 460 may be compressed (e.g., in the z-direction) when an electronic assembly (e.g.,electronic assembly 120 ofFIG. 1 ) is attached to pin 415 (e.g., pressed againstpin 415 in the z-direction) of each ofinterconnections 410. - Each of
interconnections 410 may have a shorter electrical path (e.g., formed bypin 415,spring 460,collar 411, and via 434) in comparison with a conventional interconnection (e.g., a pogo-pin). This may lead to a lower profile forinterconnections 410 betweenbase 430 and other electronic devices (e.g., betweenbase 430 andelectronic assembly 120 ofFIG. 1 ). Each ofinterconnections 410 may also have a relatively large pin stroke in comparison with a conventional interconnection (e.g., a pogo-pin). - The above description and the drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Portions and features of some embodiments may be included in, or substituted for, those of other embodiments. Embodiments set forth in the claims encompass all available equivalents of those claims.
- The Abstract is provided to comply with 37 C.F.R. Section 1.72(b) requiring an abstract that will allow the reader to ascertain the nature and gist of the technical disclosure. It is submitted with the understanding that it will not be used to limit or interpret the scope or meaning of the claims. The following claims are hereby incorporated into the detailed description, with each claim standing on its own as a separate embodiment.
Claims (12)
1-20. (canceled)
21. An electronic arrangement comprising:
a collar having at least a portion located inside an opening in a base;
a pin electrically coupled to the collar, the pin including a first end outside the base and a second end inside the base; and
a spring arranged to enable the pin to move in a direction between the first and second ends if a force is applied to at least one of the first and second ends, wherein the spring is indirectly coupled to the collar.
22. The electronic arrangement of claim 21 , wherein the collar includes a portion having a cylindrical shape, the opening of the base includes a via, and at least part of the portion having the cylindrical shape conforms to a sidewall of the via.
23. The electronic arrangement of claim 21 , wherein the collar includes an additional portion located outside the opening of the base and having a dimension greater than a diameter of the opening of the base.
24. The electronic arrangement of claim 21 , wherein the spring includes a coil spring.
25. The electronic arrangement of claim 21 , wherein the spring includes a planar spring.
26. The electronic arrangement of claim 21 , wherein the spring is coupled to the second end of the pin through a rod located between the second end of the pin and the spring.
27. The electronic arrangement of claim 21 , wherein the spring is not electrically coupled to the pin.
28. The electronic arrangement of claim 21 further comprising:
an additional collar having at least a portion located inside an additional opening in the base;
an additional pin electrically coupled to the additional collar, the additional pin including a first end outside the base and a second end inside the base; and
an additional spring arranged to enable the additional pin to move in a direction between the first and second ends of the additional pin if a force is applied to at least one of the first and second ends of the additional pin, wherein the additional spring is indirectly coupled to the additional collar.
29. The electronic arrangement of claim 21 , wherein the base includes a printed circuit board.
30. The electronic arrangement of claim 21 , wherein the base includes an interface arranged to be coupled to an analyzer in a test.
31. The electronic arrangement of claim 30 , wherein the pin is arranged to be coupled to an electronic assembly in the test.
Priority Applications (1)
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US15/614,182 US20170273176A1 (en) | 2012-12-06 | 2017-06-05 | Actuation mechanisms for electrical interconnections |
Applications Claiming Priority (2)
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US13/707,032 US9674943B2 (en) | 2012-12-06 | 2012-12-06 | Actuation mechanisms for electrical interconnections |
US15/614,182 US20170273176A1 (en) | 2012-12-06 | 2017-06-05 | Actuation mechanisms for electrical interconnections |
Related Parent Applications (1)
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US13/707,032 Division US9674943B2 (en) | 2012-12-06 | 2012-12-06 | Actuation mechanisms for electrical interconnections |
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US20170273176A1 true US20170273176A1 (en) | 2017-09-21 |
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US13/707,032 Active 2033-06-21 US9674943B2 (en) | 2012-12-06 | 2012-12-06 | Actuation mechanisms for electrical interconnections |
US15/614,182 Abandoned US20170273176A1 (en) | 2012-12-06 | 2017-06-05 | Actuation mechanisms for electrical interconnections |
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US13/707,032 Active 2033-06-21 US9674943B2 (en) | 2012-12-06 | 2012-12-06 | Actuation mechanisms for electrical interconnections |
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US (2) | US9674943B2 (en) |
KR (1) | KR101602023B1 (en) |
CN (1) | CN103855496B (en) |
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Families Citing this family (4)
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US9674943B2 (en) | 2012-12-06 | 2017-06-06 | Intel Corporation | Actuation mechanisms for electrical interconnections |
GB2510142B (en) * | 2013-01-25 | 2016-06-08 | Rolls Royce Plc | Contact device for contoured surfaces |
CN104460061B (en) * | 2014-12-09 | 2018-06-05 | 京东方科技集团股份有限公司 | Test probe and test equipment |
US10197599B2 (en) | 2015-12-16 | 2019-02-05 | Infineon Technologies Ag | Test pin configuration for test device for testing devices under test |
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Also Published As
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KR101602023B1 (en) | 2016-03-17 |
US9674943B2 (en) | 2017-06-06 |
CN103855496B (en) | 2017-04-26 |
KR20140073443A (en) | 2014-06-16 |
CN103855496A (en) | 2014-06-11 |
US20140158416A1 (en) | 2014-06-12 |
SG2013086624A (en) | 2014-07-30 |
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