公开(公告)号：US06512293B1

公开(公告)日：2003-01-28

申请号：US09875055

申请日：2001-06-05

申请人： Chok J. Chia ,  Seng Sooi Lim ,  Wee K. Liew

发明人： Chok J. Chia ,  Seng Sooi Lim ,  Wee K. Liew

IPC分类号： H01L2304

CPC分类号： H01L23/544 ,  H01L23/49816 ,  H01L25/105 ,  H01L2223/54473 ,  H01L2223/54486 ,  H01L2225/1005 ,  H01L2924/15162 ,  H05K1/181 ,  H05K2201/10537 ,  H05K2201/10734 ,  Y02P70/611

摘要： A method and apparatus for providing a ball grid array assembly formed from interlocking ball grid array packages is disclosed. Each of the ball grid array packages has interlocking edge features for mechanical connection, whereby joining the plurality of ball grid array packages via the interlocking edge features forms the interlocking ball grid array assembly. The interlocking ball grid array assembly may then be mounted on a PC board as a single unit.

摘要翻译： 公开了一种用于提供由联锁球栅阵列封装形成的球栅阵列组件的方法和装置。 每个球栅阵列封装具有用于机械连接的互锁边缘特征，由此通过互锁边缘特征连接多个球栅阵列封装形成互锁球栅阵列组件。 联锁球栅阵列组件然后可以作为单个单元安装在PC板上。

公开(公告)号：US6040632A

公开(公告)日：2000-03-21

申请号：US6784

申请日：1998-01-14

申请人： Qwai H. Low ,  Chok J. Chia ,  Seng-Sooi Lim

发明人： Qwai H. Low ,  Chok J. Chia ,  Seng-Sooi Lim

IPC分类号： H01L23/485 ,  H01L27/10

CPC分类号： H01L24/02 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01014 ,  H01L2924/01033 ,  H01L2924/01075 ,  H01L2924/01082 ,  H01L2924/14 ,  H01L2924/19043

摘要： A multiple-sized integrated circuit (IC) die and a method of making a multiple-sized IC die includes forming a plurality of IC dies on a semiconductor wafer. Each IC die has multiple rows of bonding pads around its periphery. Adjacent bonding pads on separate rows of each IC die are electrically connected together so that attachment to any one of the connected bond pads yields the same result. A plurality of scribe streets separate each IC die on the wafer, with the scribe street defining the width between each IC die. Rows of bonding pads reside in the scribe street area. Different rows of bonding pads may be selectively removed from the IC die by scribing the wafer so as to include one or more of the rows of bonding pads, thereby allowing one IC die design to have multiple sizes. An IC die separated from the wafer may still be sized smaller as long as there remain at least two rows of bonding pads around the periphery.

摘要翻译： 多尺寸集成电路（IC）管芯和制造多尺寸IC管芯的方法包括在半导体晶片上形成多个IC管芯。 每个IC芯片周围都有多排接合焊盘。 每个IC管芯的独立行上的相邻接合焊盘电连接在一起，使得连接到任何一个连接的接合焊盘产生相同的结果。 多个划线区将晶片上的每个IC芯片分开，划线条限定每个IC芯片之间的宽度。 焊盘行位于划痕街区域。 可以通过划片晶片来选择性地从IC芯片去除不同行的焊盘，以便包括一行或多行接合焊盘，从而允许一个IC管芯设计具有多个尺寸。 只要在周围保持至少两排接合焊盘，则与晶片分离的IC裸片仍可具有更小的尺寸。

公开(公告)号：US5927505A

公开(公告)日：1999-07-27

申请号：US920430

申请日：1997-08-29

申请人： Chok J. Chia ,  Seng-Sooi Lim ,  Maniam Alagaratnam

发明人： Chok J. Chia ,  Seng-Sooi Lim ,  Maniam Alagaratnam

IPC分类号： B29C45/14 ,  H01L21/56 ,  H01L23/31 ,  B65D73/02 ,  H01L23/04

CPC分类号： B29C45/14418 ,  B29C45/14655 ,  H01L21/565 ,  H01L23/3121 ,  B29C2045/14934 ,  B29C70/72 ,  B29C70/78 ,  H01L2924/0002

摘要： Substrates having a wide range of thickness, and intended to be overmolded with a plastic package body, are accommodated in a common mold. The top surface of the substrate is provided with a dam structure, which may be formed as an additional layer on the substrate, and which is preferably in the form of a square ring. A groove (channel) is machined (e.g., by routing) into the surface of the dam structure. The top mold half, having a cavity for forming the package body, is provided with a sealing structure at the periphery of the cavity. The sealing structure has a ridge fitting into the channel of the dam structure. The depth of the groove in the dam structure is readily adjusted to ensure uniform clamping pressure of the top mold half on the substrate, so that liquid molding compound is contained within the cavity and so that undue pressure is not exerted on the substrate.

摘要翻译： 具有宽范围厚度并且旨在用塑料封装体包覆成型的基板容纳在共同的模具中。 衬底的顶表面设置有坝结构，其可以在衬底上形成为附加层，并且其优选地为正方形环的形式。 槽（通道）被加工（例如通过路由）到坝结构的表面中。 具有用于形成封装主体的空腔的顶部模具半部在空腔的周边处设置有密封结构。 密封结构具有嵌入坝结构通道的脊。 容易调节坝结构中槽的深度，以确保上模半部在基板上的均匀夹紧压力，使得液体模塑料被包含在空腔内，从而不会对衬底施加过大的压力。

公开(公告)号：US5568683A

公开(公告)日：1996-10-29

申请号：US472320

申请日：1995-06-07

申请人： Chok J. Chia ,  Manian Alagaratnam ,  Qwai H. Low ,  Seng-Sooi Lim

发明人： Chok J. Chia ,  Manian Alagaratnam ,  Qwai H. Low ,  Seng-Sooi Lim

IPC分类号： F02F7/00 ,  H01L23/367 ,  H01L23/40 ,  H05K3/30

CPC分类号： H01L23/40 ,  F02F7/00 ,  H01L23/3675 ,  H01L2924/0002 ,  Y10T29/4913

摘要： A removable heatsink assembly comprised of a heatsink unit and a heatspreader is provided. The heatsink unit has at least one fin and a coupling collar for radiating heat away from a packaged electronic device. The heatspreader includes a platform attached to an inner collar in thermal contact with the packaged electronic device. The platform has one or more tabs suitable for mating with one or more flanges located on the coupling collar of the heatsink unit. Coupling grooves within the flanges engage the platform of the heatspreader when the flanges are mated with the heatspreader tabs and the heatsink is turned. The heatsink can therefore be quickly and conveniently attached to or removed from the heatspreader. The present invention thus permits a wide variety of different heatsinks to be interchangeably used with a single heatspreader attached to an electronic device package.

摘要翻译： 提供了由散热器单元和散热器组成的可拆卸的散热器组件。 散热器单元具有至少一个翅片和用于从封装的电子设备辐射热量的联接套环。 散热器包括附接到与封装的电子设备热接触的内部套环的平台。 该平台具有一个或多个适合于与位于散热器单元的联接环上的一个或多个凸缘相配合的凸片。 当凸缘与散热片接头配合并且散热片转动时，凸缘内的耦合凹槽接合散热器的平台。 因此，散热器可以快速方便地附接到散热器或从散热器移除。 因此，本发明允许各种不同的散热器与附接到电子设备封装的单个散热器可互换地使用。

公开(公告)号：US5981311A

公开(公告)日：1999-11-09

申请号：US104838

申请日：1998-06-25

申请人： Chok J. Chia ,  Seng Sooi Lim ,  Patrick Variot

发明人： Chok J. Chia ,  Seng Sooi Lim ,  Patrick Variot

IPC分类号： H01L21/48 ,  H05K3/24 ,  H05K3/42 ,  H01L21/58 ,  H01L21/28 ,  H01L21/304

CPC分类号： H05K3/242 ,  H01L21/4846 ,  H05K3/428 ,  H01L2224/16225 ,  H01L2224/48091 ,  H01L2224/48227 ,  H05K2203/0191 ,  H05K2203/0361 ,  H05K2203/1572

摘要： A method of electroplating a high density integrated circuit (IC) substrate using a removable plating bus including the steps of providing an IC substrate made of nonconductive material having a plurality of conductive traces formed on its surface. Attaching a removable plating bus to the IC substrate, covering the plurality of conductive traces. Forming through holes (or vias) in predetermined locations. The holes going through the removable plating bus and IC substrate, exposing edges of selected conductive traces in the holes. Plating the through holes with a conductive material (such as copper) that electrically connects the removable plating bus to the exposed edges of the traces in the holes. Coating the IC substrate (including the removable plating bus) with plating resist and selectively removing portions of the removable plating bus, along with the plating resist, to expose selected areas of traces on the IC substrate that require plating. Electroplating the exposed trace areas on the IC substrate with conductive material (such as gold or nickel) by using the removable plating bus as the electrical connection to the exposed metal traces and removing the removable plating bus after electroplating is finished.

摘要翻译： 一种使用可移除电镀母线电镀高密度集成电路（IC）衬底的方法，包括以下步骤：提供由其表面上形成有多个导电迹线的非导电材料制成的IC衬底。 将可移除的电镀母线安装到IC基板上，覆盖多个导电迹线。 在预定位置形成通孔（或通孔）。 穿过可移除电镀总线和IC基板的孔，暴露孔中选定导电迹线的边缘。 用诸如铜的导电材料（例如铜）电镀通孔，其将可移除的电镀总线电连接到孔中的迹线的暴露边缘。 用电镀抗蚀剂涂覆IC基板（包括可移除电镀总线），并与电镀抗蚀剂一起选择性地去除可移除电镀母线的部分，以暴露需要电镀的IC基板上的选定区域的痕迹。 通过使用可移除的电镀母线作为与暴露的金属迹线的电气连接，并且在电镀完成之后移除可移除的电镀母线，用导电材料（例如金或镍）电镀IC衬底上的暴露痕迹区域。

公开(公告)号：US5521427A

公开(公告)日：1996-05-28

申请号：US340807

申请日：1994-11-17

申请人： Chok J. Chia ,  Seng-Sooi Lim

发明人： Chok J. Chia ,  Seng-Sooi Lim

IPC分类号： H01L23/495 ,  H05K3/30 ,  H05K3/34 ,  H01L23/544

CPC分类号： H05K3/303 ,  H01L23/49541 ,  H01L2224/48091 ,  H01L2224/48247 ,  H05K2201/10303 ,  H05K2201/10659 ,  H05K2201/10689 ,  H05K2201/10962 ,  H05K2203/167 ,  H05K3/3421 ,  Y02P70/613 ,  Y10S438/975 ,  Y10T29/49121 ,  Y10T29/49133

摘要： A packaged semiconductor device, leadframe for making same, and method of mounting same to a printed circuit board are described. The device has a body, and a plurality of leads extending from the body. One or more alignment features are formed on the exterior of the package body, for maintaining precise alignment of the device with respect to a printed wiring board. The alignment feature is a tab formed as part of portion of the leadframe external to the package body. The tab may have various shapes, and may be provided with a hole for registering with a pin on an underlying substrate, such as a printed wiring board. The pin and the tab may be electrically connected.

摘要翻译： 描述了一种封装的半导体器件，用于制造其的引线框，以及将其安装到印刷电路板的方法。 该装置具有主体和从主体延伸的多个引线。 一个或多个对准特征形成在包装体的外部上，以保持装置相对于印刷线路板的精确对准。 对准特征是形成为包装体外部的引线框架的一部分的突片。 突片可以具有各种形状，并且可以设置有用于与诸如印刷线路板的下面的基板上的销对准的孔。 引脚和突片可以电连接。

公开(公告)号：US5463529A

公开(公告)日：1995-10-31

申请号：US317968

申请日：1994-10-04

申请人： Chok J. Chia ,  Manian Alagaratnam ,  Qwai H. Low ,  Seng-Sooi Lim

发明人： Chok J. Chia ,  Manian Alagaratnam ,  Qwai H. Low ,  Seng-Sooi Lim

IPC分类号： F02F7/00 ,  H01L23/367 ,  H01L23/40 ,  H05K7/20

CPC分类号： H01L23/40 ,  F02F7/00 ,  H01L23/3675 ,  H01L2924/0002 ,  Y10T29/4913

摘要： A removable heatsink assembly comprised of a heatsink unit and a heatspreader is provided. The heatsink unit has at least one fin and a coupling collar for radiating heat away from a packaged electronic device. The heatspreader includes a platform attached to an inner collar in thermal contact with the packaged electronic device. The platform has one or more tabs suitable for mating with one or more flanges located on the coupling collar of the heatsink unit. Coupling grooves within the flanges engage the platform of the heatspreader when the flanges are mated with the heatspreader tabs and the heatsink is turned. The heatsink can therefore be quickly and conveniently attached to or removed from the heatspreader. The present invention thus permits a wide variety of different heatsinks to be interchangeably used with a single heatspreader attached to an electronic device package.

摘要翻译： 提供了由散热器单元和散热器组成的可拆卸的散热器组件。 散热器单元具有至少一个翅片和用于从封装的电子设备辐射热量的联接套环。 散热器包括附接到与封装的电子设备热接触的内部套环的平台。 该平台具有一个或多个适合于与位于散热器单元的联接环上的一个或多个凸缘相配合的凸片。 当凸缘与散热片接头配合并且散热片转动时，凸缘内的耦合凹槽接合散热器的平台。 因此，散热器可以快速方便地附接到散热器或从散热器移除。 因此，本发明允许各种不同的散热器与附接到电子设备封装的单个散热器可互换地使用。

公开(公告)号：US5262927A

公开(公告)日：1993-11-16

申请号：US834182

申请日：1992-02-07

申请人： Chok J. Chia ,  Seng-Sooi Lim

发明人： Chok J. Chia ,  Seng-Sooi Lim

IPC分类号： H01L23/12 ,  G03F7/20 ,  H01L23/31 ,  H01L23/495 ,  H01L23/498 ,  H01L23/50 ,  H01L29/06 ,  H05K1/11

CPC分类号： G03F7/70433 ,  H01L23/3121 ,  H01L23/49517 ,  H01L23/49541 ,  H01L23/49861 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/49109 ,  H01L24/48 ,  H01L24/49 ,  H01L29/0657 ,  H01L2924/00014 ,  H01L2924/01014 ,  H01L2924/01078 ,  H01L2924/14 ,  H01L2924/15151 ,  H01L2924/15153 ,  H01L2924/1517 ,  H01L2924/1532 ,  H01L2924/181 ,  H01L2924/18301

摘要： A dambar-less leadframe is sandwiched between two printed circuit boards (PCBs). The PCBs form a major portion of the package body, and isolate the leadframe leads from plastic molding compound. In one embodiment, an upper PCB (substrate) is formed as a square ring, having an opening containing a heat sink element. A lower PCB is also formed as a square ring, and has a smaller opening for receiving a die. The back face of the die is mounted to the heat sink. The exposed front face of the die is wire bonded to inner ends of conductive traces on the exposed face of the lower PCB. The outer ends of the traces are electrically connected to the leadframe leads by plated-through vias extending through the two PCBs. The plated-through vias additionally secure the sandwich structure together. Plastic molding compound is injection/transfer molded over the front face of the die and the bond wires, forming a partially-molded package. In another embodiment, the upper PCB is a solid planar element, and is not provided with an opening for a heat sink. The back face of the die is mounted to the inside surface of the upper PCB.

公开(公告)号：US5197183A

公开(公告)日：1993-03-30

申请号：US787848

申请日：1991-11-05

申请人： Chok J. Chia ,  Seng-Sooi Lim

发明人： Chok J. Chia ,  Seng-Sooi Lim

IPC分类号： B29C45/14 ,  H01L21/56 ,  H01L23/495

CPC分类号： B29C45/14655 ,  H01L21/565 ,  H01L23/49551 ,  H01L2224/45015 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L24/45 ,  H01L24/48 ,  H01L2924/00014 ,  H01L2924/01079 ,  H01L2924/14 ,  H01L2924/181 ,  H01L2924/3025 ,  Y10T29/49121

摘要： In a leadframe supporting a semiconductor device, the tiebar adjacent the mold gate is kinked, or cut and bent, to form a baffle shielding bond wires connecting the semiconductor device to the leadframe from damage by a jet of incoming molding compound. Whether kinked or cut/bent, the baffle extends out of the plane of the leadframe so as to be disposed more-or-less directly in front of the gate.

摘要翻译： 在支撑半导体器件的引线框架中，与模具门相邻的连接杆被扭结或切割和弯曲，以形成将半导体器件与引线框架连接的挡板屏蔽接合线，以免由入射的模塑料的射流造成损坏。 无论是弯曲还是切割/弯曲，挡板延伸出引线框架的平面，以便直接在门的前方多或少地设置。

公开(公告)号：US06519844B1

公开(公告)日：2003-02-18

申请号：US09940130

申请日：2001-08-27

申请人： Kumar Nagarajan ,  Seng Sooi Lim ,  Chok J. Chia

发明人： Kumar Nagarajan ,  Seng Sooi Lim ,  Chok J. Chia

IPC分类号： H05K330

CPC分类号： H01L24/32 ,  H01L23/13 ,  H01L23/3128 ,  H01L2224/16225 ,  H01L2224/27013 ,  H01L2224/32225 ,  H01L2224/73204 ,  H01L2224/83051 ,  H01L2224/83385 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01033 ,  H01L2924/01075 ,  H01L2924/01082 ,  H01L2924/14 ,  H01L2924/15151 ,  H01L2924/15311 ,  H01L2924/181 ,  H01L2924/1815 ,  Y10T29/49144 ,  Y10T29/49146 ,  H01L2924/00

摘要： An integrated circuit package manufacturing process is described which reduces or eliminates the formation of voids in a molding compound between a die and an underlying substrate. The process includes providing the substrate, which has an upper surface and an air space above the upper surface. Electrically conductive vias are formed through the upper surface of the substrate which extend at least partially through the substrate, and fluid communication is provided between the vias and the overlying air space. The process includes attaching the integrated circuit die to the upper surface of the substrate over at least a portion of the vias, while leaving a gap between the die and the upper surface of the substrate. The process further includes flowing the molding compound into the gap between the die and the upper surface of the substrate while maintaining fluid communication between the vias and the air space. In this manner, air trapped between the molding compound and the upper surface of the substrate is urged to flow into the vias rather than forming a void in the molding compound. Fluid communication between the plurality of vias and the air space may be provided by not tenting the vias with a solder mask layer, or by removing any solder mask or other material which may have filled or tented over the vias during processing of the substrate.

摘要翻译： 描述了一种集成电路封装制造工艺，其减少或消除了在管芯和下层衬底之间的模塑料中形成空隙。 该方法包括提供在上表面上方具有上表面和空气空间的基底。 导电孔通过衬底的上表面形成，其至少部分延伸通过衬底，并且在通孔和上覆空气空间之间提供流体连通。 该过程包括在集成电路管芯的至少一部分通孔之上附接集成电路管芯到衬底的上表面，同时在管芯和衬底的上表面之间留下间隙。 该方法还包括使模塑料流动到模具和衬底的上表面之间的间隙中，同时保持通孔和空气空间之间的流体连通。 以这种方式，被迫在模塑料和衬底的上表面之间被捕获的空气被迫流入通孔，而不是在模塑料中形成空隙。 多个通孔和空气空间之间的流体连通可以通过不用通孔焊接掩模层来提供，或者通过在衬底的处理期间移除可能已经填充或覆盖过孔的任何焊接掩模或其他材料来提供。