Source: https://patents.google.com/patent/KR20120036446A/en
Timestamp: 2020-02-23 07:41:09
Document Index: 566870558

Matched Legal Cases: ['art 104', 'art 104', 'art 104', 'art 104', 'art 104', 'art 104', 'art 104', 'art 104', 'art 104', 'art 104', 'art 104', 'art 104']

KR20120036446A - Printed circuit board for board-on-chip package, the package and method of fabricating the same - Google Patents
Printed circuit board for board-on-chip package, the package and method of fabricating the same Download PDF
KR20120036446A
KR20120036446A KR1020100098118A KR20100098118A KR20120036446A KR 20120036446 A KR20120036446 A KR 20120036446A KR 1020100098118 A KR1020100098118 A KR 1020100098118A KR 20100098118 A KR20100098118 A KR 20100098118A KR 20120036446 A KR20120036446 A KR 20120036446A
KR1020100098118A
문태호
2010-10-08 Priority to KR1020100098118A priority Critical patent/KR20120036446A/en
2012-04-18 Publication of KR20120036446A publication Critical patent/KR20120036446A/en
PURPOSE: A printed circuit board for a board on chip package, the board on chip package including the same, and manufacturing methods thereof are provided to prevent a recognition error of a reject mark by including a reject marking unit on each unit substrate. CONSTITUTION: A base substrate(102) includes a circuit area(C) and a peripheral area(R). The base substrate includes a first surface(101a) and a second surface(101b). Circuit patterns(104c) are arranged in the circuit area. A reject marking unit(104r) is arranged in the peripheral area. An alignment mark is arranged in the edge of the peripheral area. A plating lead line is connected to the reject marking unit.
Printed circuit board for a board-on-chip package, a board-on-chip package including the same and a method of manufacturing the same {Printed circuit board for board-on-chip package, the package and method of fabricating the same}
The present invention relates to a printed circuit board for a board-on-chip package, a board-on-chip package including the same, and a manufacturing method thereof.
BACKGROUND Recently, electronic devices are becoming smaller than in the prior art, and for this purpose, more compact and high performance semiconductor chip packages are required. According to this trend, a semiconductor chip package is mainly a multi-chip package in which a plurality of semiconductor chips are stacked up or down in a package or embedded in a planar arrangement, or a semiconductor chip is directly attached to a substrate and sealed to reduce its size. Board-on-chip packages are used. Board-on-chip (BoC: Board-on-Chip) is different from the conventional method of mounting a semiconductor on a board through a lead frame. ㆍ It is attracting attention as a next-generation high-speed semiconductor substrate suitable for high speed DRAM such as DDR (Digital Disk Recorder) 2 because it can minimize electrical performance loss. Currently, the capacity of DRAM is rapidly increasing to 128MB, 256MB, 512MB, 1GB, 2GB, etc. To cope with this, it is necessary to minimize electrical losses and to ensure product reliability by reducing the thickness of the board.
SUMMARY OF THE INVENTION An object of the present invention is to provide a printed circuit board for a board-on-chip package that can prevent an error in recognition of a reject mark.
Another object of the present invention is to provide a reliable board-on-chip package of reject marks.
Another object of the present invention is to provide a method of manufacturing a board-on-chip package capable of preventing a recognition mark recognition error.
The printed circuit board for a board-on-chip package according to the present invention for solving the above problems is provided at a strip level including a plurality of unit substrates, and includes a reject marking unit for determining whether each unit substrate is defective. The reject marking portion is located in each unit substrate.
The unit substrate may include a circuit region and a peripheral region, and the reject marking portion may be preferably located in the peripheral region.
The unit substrate may include a circuit pattern and a plating lead wire connected thereto, and the reject marking part may be connected to the plating lead wire.
The reject marking portion may have at least one shape selected from a group including a circle, a rectangle, and a cross.
The unit substrate may include a surface on which a solder ball is attached and a surface on which a semiconductor chip is mounted, and the reject marking may be located on a surface on which the solder ball is attached.
The unit substrate may include an opening region, and the reject marking portion may be positioned adjacent to the opening region.
According to another aspect of the present invention, a board on chip package includes a unit substrate including a reject marking part and an opening; And a semiconductor chip mounted on one surface of the unit substrate, wherein the semiconductor chip and the unit substrate are electrically connected through the opening.
According to another aspect of the present invention, there is provided a method of manufacturing a board on chip package, including: preparing a strip level base substrate including a second surface facing the first surface and having a plurality of unit substrates; Forming a circuit pattern, a plating lead wire, and a reject marking on each of the unit substrates; Forming a first insulating film on the first surface to expose a portion of the circuit pattern, the plating lead wire, and the reject marking portion, and forming a second insulating film on the second surface; And connecting electricity to an exposed portion of the plating lead wire to form a plating layer on each of the exposed circuit pattern and the reject marking portion.
The method includes, in each unit substrate, forming an opening by removing a portion of the plating lead line and the base substrate below it; And inspecting each of the unit substrates, and forming a reject mark on the reject marking unit of the defective unit substrate with respect to the unit substrate where the defect is found.
The method includes, in each unit substrate, mounting a semiconductor chip on the second surface; And electrically connecting the semiconductor chip and the circuit pattern through the opening.
The printed circuit board for a board-on-chip package according to an embodiment of the present invention may include a reject marking unit in each unit substrate, thereby reducing a recognition error of the reject mark.
The board-on-chip package according to another embodiment of the present invention may include a reject marking part in each unit substrate, thereby making it easy to determine a defective substrate, thereby improving reliability.
According to another aspect of the present invention, a method of manufacturing a board-on-chip package may reduce a recognition error by forming a reject marking part in a unit substrate, and accurately determine a defective substrate to prevent a normal substrate from being recognized as a defective substrate, thereby increasing yield. have.
1 is a plan view of a strip level substrate for a board-on-chip package according to an embodiment of the present invention.
FIG. 2A is a plan view of a unit substrate located in a portion A of FIG. 1.
2B and 2C are cross-sectional views of FIG. 2A taken along line II ′ and line II-II ′, respectively.
3A is a plan view illustrating a reject mark on the unit substrate of FIG. 2A.
FIG. 3B is a cross-sectional view of FIG. 3A taken along line II-II '.
4A and 5A are plan views illustrating a process of forming the unit substrate of FIG. 2A.
4B and 5B are cross-sectional views taken along line II ′ of FIGS. 4A and 5A, respectively.
4C and 5C are cross-sectional views taken along the line II-II ′ of FIGS. 4A and 5A, respectively.
6A, 7A, and 8A are plan views sequentially illustrating a process of forming a board-on-chip package according to an embodiment of the present invention.
6B, 7B and 8B are cross-sectional views taken along line II ′ of FIGS. 6A, 7A and 8A, respectively.
6C, 7C, and 8C are cross-sectional views taken along the line II-II 'of FIGS. 6A, 7A, and 8A, respectively.
9 and 10 are plan views of strip level substrates for a board-on-chip package according to other examples of the invention.
11 is a diagram illustrating an example of a package module including a semiconductor package to which the technology of the present invention is applied.
12 is a block diagram illustrating an example of an electronic device including a semiconductor package to which the technology of the present invention is applied.
13 is a block diagram illustrating an example of a memory system including a semiconductor package to which the technology of the present invention is applied.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments disclosed herein are being provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thicknesses of the layers and regions are exaggerated for clarity. In addition, where a layer is said to be "on" another layer or substrate, it may be formed directly on the other layer or substrate, or a third layer may be interposed therebetween. Like numbers refer to like elements throughout.
1, a strip level printed circuit board 10 for a board-on-chip package according to an embodiment of the present invention includes a plurality of unit substrates 100. Each of the unit substrates 100 includes a circuit region C and a peripheral region R, and an opening 112 is positioned at the center of the circuit region C. FIG. In the strip level printed circuit board 10 of the present invention, there is no reject marking unit for determining whether each unit substrate 100 is defective in the frame 12, which is an edge of the unit substrates 100. In the strip level substrate 10 for a board-on-chip package according to the present invention, a reject marking part is present in each unit substrate 100. This will be described in detail below.
FIG. 2A is a plan view of a unit substrate located in a portion A of FIG. 1. 2B and 2C are cross-sectional views of FIG. 2A taken along lines II ′ and II-II ′, respectively.
2A to 2C, the unit board 100 for a board-on-chip package includes a base substrate 102 including a circuit region C and a peripheral region R corresponding to the periphery thereof. The base substrate 102 may include an insulating material. The base substrate 102 includes a second surface 101b opposite to the first surface 101a. Circuit patterns 104c are disposed in the circuit region C on the first surface 101a. A reject marking part 104r is disposed in the peripheral area R on the first surface 101a. An alignment mark S may be disposed at an edge edge of the peripheral area R. FIG. A plating lead 104L is disposed across the circuit region C and the peripheral circuit region R on the first surface 101a. The plating lead wire 104L is connected to the reject marking part 104r. The base substrate 102 includes an opening 112 at the center of the circuit region C. A pad portion 104a is disposed on the first surface 101a adjacent to the opening 112. The reject marking part 104r may be disposed in the peripheral area R adjacent to the opening 112 and may be connected to the plating lead line 104L. A first insulating layer 108 is disposed on the first surface 101a to cover a portion of the circuit patterns 104c, but a part of the circuit patterns 104c, the pad portion 104a, and the reject marking portion. 104r and the plating lead wire 104L are exposed. Plating layers 110c, 110a, 110l, and 110r are disposed on a portion of the exposed circuit patterns 104c, the pad part 104a, the reject marking part 104r, and the plating lead wire 104l. The plating layers 110c, 110a, 110l, and 110r may include a circuit plating layer 110c, a pad plating layer 110a, a lead wire plating layer 110l, and a reject plating layer 110r, respectively. The second surface 101b of the base substrate 102 is covered with a second insulating film 106.
3A is a plan view illustrating a reject mark on the unit substrate of FIG. 2A. FIG. 3B is a cross-sectional view of FIG. 3A taken along line II-II '.
Referring to FIGS. 2A to 2C and FIGS. 3A and 3B, after inspecting each unit substrate 100 of the strip-level printed circuit board 10 for board-on-chip package, the predetermined unit substrate 100 is defective. If found, a reject mark B is formed on the reject marking portion 104r. The reject mark B may be formed using a laser or may be formed using an ink pen. In the case of using a laser, the reject plating layer 110r and the reject marking portion 104 below may be partially or completely melted by the laser and removed. When using an ink pen, the ink liquid may be applied onto the reject plating layer 110r. 3A and 3B show a case in which the reject mark B is formed using an ink pen.
As such, the printed circuit board 10 for a board-on-chip package according to an exemplary embodiment of the present invention includes a reject marking part 104r in each unit substrate 100, so that a defect is found in the unit substrate 100. Since the reject mark B can be displayed directly on the reject marking part 104r, the recognition error of the reject mark B can be reduced. In addition, it is possible to accurately determine the defective substrate to prevent the normal substrate is recognized as a defective substrate.
Next, a manufacturing process of the printed circuit board 10 for a board-on-chip package will be described. In this case, the unit substrate 100 will be described. 4A and 5A are plan views illustrating a process of forming the unit substrate of FIG. 2A. 4B and 5B are cross-sectional views taken along the line II ′ of FIGS. 4A and 5A, respectively. 4C and 5C are cross-sectional views taken along the line II-II ′ of FIGS. 4A and 5A, respectively.
4A to 4C, a base substrate 102 having a second surface 102b facing the first surface 101a and having a circuit region C and a peripheral region R is prepared. The base substrate 102 may be made of an insulating material. A circuit pattern 104c, a pad portion 104a, a plating lead line 104L, and a reject marking portion 104r are formed on the first surface 101a of the base substrate 102. The circuit pattern 104c, the pad portion 104a, the plating lead wire 104l, and the reject marking portion 104r may be formed of, for example, a copper layer on the front surface of the first surface 101a by an electroless plating method. After forming in, it may be formed by etching the copper layer using a resist pattern as an etching mask. Therefore, the circuit pattern 104c, the pad portion 104a, the plating lead wire 104L, and the reject marking portion 104r may be simultaneously formed. Although not shown, a conductive pattern may be formed on the second surface 102b.
5A through 5C, after forming a first insulating film 108 on the first surface 101a and partially patterning the portion, the circuit pattern 104c, the pad portion 104a, and the plating lead wire ( 104L) and the reject marking portion 104r. A portion of the exposed circuit pattern 104c may serve as a ball land to which bumps, such as solder balls, are later attached. The second insulating layer 106 is formed on the second surface 101b. In addition, a portion of the circuit pattern 104c exposed by electroplating by connecting electricity to the exposed plating lead wire 104L, the pad part 104a, the plating lead wire 104L, and the reject marking part Plating layers 110c, 110a, 110l, and 110r are formed on 104r. The plating layers 110c, 110a, 110l, and 110r may include a circuit plating layer 110c, a pad plating layer 110a, a lead wire plating layer 110l, and a reject plating layer 110r, respectively. The plating layers 110c, 110a, 110l, and 110r may be formed of a single / composite layer of nickel and / or gold, for example. The plating layers 110c, 110a, 110l, and 110r are formed by electroplating because they are superior to electroless plating in terms of reliability.
Referring again to FIGS. 2A to 2C, the lead wire plating layer 110 L, the plating lead wires 104 L of the lower portion, and the base substrate 102 beneath it are formed at the center of the circuit region C by using a router bit. To form the opening 112.
After the printed circuit board 10 having the strip level including the unit substrate 100 formed by the above process is formed, each unit substrate 100 is inspected to determine whether there is a defect, and as shown in FIGS. 3A and 3B. The reject mark B is displayed on the reject marking part 104r in the 100. The reject mark B is not displayed on the reject marking part 104r in the unit substrate 100 in which no defect is found.
Next, a process of forming a board-on-chip package including the unit substrate 100 formed by such a process will be described.
6A, 7A, and 8A are plan views sequentially illustrating a process of forming a board-on-chip package according to an embodiment of the present invention. 6B, 7B, and 8B are cross-sectional views taken along the line II ′ of FIGS. 6A, 7A, and 8A, respectively. 6C, 7C, and 8C are cross-sectional views taken along the line II-II 'of FIGS. 6A, 7A, and 8A, respectively.
Referring to FIGS. 6A to 6C, after determining whether a defect is present and selectively displaying a reject mark in each unit substrate, the base substrate 102 is monitored while monitoring the reject mark using a reject mark monitoring camera. The semiconductor chip 200 is mounted on the second surface 101b of the substrate. The semiconductor chip 200 may be mounted using an adhesive material 204. At this time, the normal semiconductor chip 200 is mounted on the normal unit substrate 100 on which the reject mark B is not displayed, and the dummy semiconductor chip is disposed on the defective unit substrate 100 on which the reject mark B is displayed. It is mounted. The semiconductor chip 200 may be mounted such that the connection terminals 202 of the semiconductor chip 200 are exposed to the opening 112 of the unit substrate 100.
7A to 7C, a wire bonding process is performed while monitoring the reject mark using a reject mark monitoring camera. In this case, the wire bonding process is performed on the normal unit substrate 100, but the wire bonding process is not performed on the defective unit substrate 100. The wire bonding process may be performed by connecting the pad portion 104a of the normal unit substrate 100 and the connection terminal 204 of the normal semiconductor chip 200 with wires in the opening 112.
8A to 8C, the molding process is performed. The molding process may be performed in a mold frame, and may fill the opening 112 with a molding compound 210 such as epoxy and cover the edge side of the semiconductor chip 200. Then, bumps 214 such as solder balls are formed on the circuit plating layer 110c on the first surface 101a. Subsequently, a package process may be completed by performing a sorter process of separating each unit substrate 100 from the strip level substrate 10 by using a blade or the like.
As described above, in the board-on-chip package and the method of forming the same according to an embodiment of the present invention, a reject marking part is provided in each unit substrate, so that it is easy to discriminate a defective substrate, thereby improving reliability and increasing yield. have.
9 and 10, the planar shape of the reject marking part 104r has a cross or quadrangular shape, not circular, as in FIG. 2A. Other configurations are the same as those of FIG. 2A. The shape of the reject marking part 104r may be various but not limited thereto.
The above-described semiconductor package technology may be applied to various kinds of semiconductor devices and package modules having the same.
11 is a diagram illustrating an example of a package module including a semiconductor package to which the technology of the present invention is applied. Referring to FIG. 11, the package module 1200 may be provided in the form of a semiconductor integrated circuit chip 1220 and a quad flat package (QFP) packaged semiconductor integrated circuit chip 1230. The package module 1200 may be formed by installing the semiconductor devices 1220 and 1230 to which the semiconductor package technology according to the present invention is applied to the substrate 1210. The package module 1200 may be connected to an external electronic device through an external connection terminal 1240 provided at one side of the substrate 1210.
The semiconductor package technology described above may be applied to an electronic system. 12 is a block diagram illustrating an example of an electronic device including a semiconductor package to which the technology of the present invention is applied. Referring to FIG. 12, the electronic system 1300 may include a controller 1310, an input / output device 1320, and a memory device 1330. The controller 1310, the input / output device 1320, and the memory device 1330 may be coupled through a bus 1350. The bus 1350 may be a path through which data moves. For example, the controller 1310 may include at least one of at least one microprocessor, a digital signal processor, a microcontroller, and logic elements capable of performing the same function. The controller 1310 and the memory device 1330 may include a semiconductor package according to the present invention. The input / output device 1320 may include at least one selected from a keypad, a keyboard, a display device, and the like. The memory device 330 is a device for storing data. The memory device 1330 may store data and / or instructions executed by the controller 1310. The memory device 1330 may include a volatile memory device and / or a nonvolatile memory device. Alternatively, the memory device 1330 may be formed of a flash memory. For example, an information processing system such as a mobile device or a desktop computer may be equipped with a flash memory to which the technique of the present invention is applied. Such a flash memory may consist of a semiconductor disk device (SSD). In this case, the electronic system 1300 may stably store large amounts of data in the flash memory system. The electronic system 1300 may further include an interface 1340 for transmitting data to or receiving data from the communication network. The interface 1340 may be in a wired or wireless form. For example, the interface 1340 may include an antenna or a wired / wireless transceiver. Although not shown, the electronic system 1300 may further include an application chipset, a camera image processor (CIS), an input / output device, and the like. Self-evident to one.
The electronic system 1300 may be implemented as a mobile system, a personal computer, an industrial computer, or a logic system performing various functions. For example, the mobile system may be a personal digital assistant (PDA), a portable computer, a web tablet, a mobile phone, a wireless phone, a laptop computer, a memory card. , A digital music system, and an information transmission / reception system. When the electronic system 1300 is a device capable of performing wireless communication, the electronic system 1300 may be used in a communication interface protocol such as a third generation communication system such as CDMA, GSM, NADC, E-TDMA, WCDAM, or CDMA2000. Can be used.
The semiconductor element to which the technique of the present invention described above is applied may be provided in the form of a memory card. 13 is a block diagram illustrating an example of a memory system including a semiconductor package to which the technology of the present invention is applied. Referring to FIG. 13, the memory card 1400 may include a nonvolatile memory device 1410 and a memory controller 1420. The nonvolatile memory device 1410 and the memory controller 1420 may store data or read stored data. The nonvolatile memory device 1410 may include at least one of nonvolatile memory devices to which the semiconductor package technology according to the present invention is applied. The memory controller 1420 may control the flash memory device 1410 to read stored data or store data in response to a read / write request from a host.
The foregoing detailed description illustrates the present invention. It is also to be understood that the foregoing is illustrative and explanatory of preferred embodiments of the invention only, and that the invention may be used in various other combinations, modifications and environments. That is, changes or modifications may be made within the scope of the concept of the invention disclosed in this specification, the scope equivalent to the disclosed contents, and / or the skill or knowledge in the art. The foregoing embodiments are intended to illustrate the best mode contemplated for carrying out the invention and are not intended to limit the scope of the present invention to other modes of operation known in the art for utilizing other inventions such as the present invention, Various changes are possible. Accordingly, the foregoing description of the invention is not intended to limit the invention to the precise embodiments disclosed. Also, the appended claims should be construed to include other embodiments.
In the printed circuit board for a board-on-chip package provided at a strip level including a plurality of unit substrates, and including a reject marking unit for determining whether each unit substrate is defective,
The reject marking unit is a printed circuit board for a board-on-chip package, characterized in that located in each unit substrate.
The unit substrate includes a circuit region and a peripheral region of the circuit region edge,
The reject marking unit is a printed circuit board for a board-on-chip package, characterized in that located in the peripheral area.
The unit substrate may include a circuit pattern and a plating lead wire connected thereto.
The reject marking portion is a printed circuit board for a board-on-chip package, characterized in that connected to the plating lead.
Printed circuit board for a board-on-chip package, characterized in that the reject marking has a circular, rectangular or cross-shaped form.
The unit substrate includes a first surface on which a solder ball is attached and a second surface on which a semiconductor chip is mounted, wherein the reject marking part is located on the first surface.
The unit substrate includes an opening region, wherein the reject marking portion is located adjacent to the opening region.
A unit substrate including a reject marking portion and an opening; And
Including a semiconductor chip mounted on one surface of the unit substrate,
The board-on-chip package, characterized in that the semiconductor chip and the unit substrate are electrically connected through the opening.
Preparing a strip level base substrate having a first surface and a second surface opposite to the first surface and having a plurality of unit substrates;
Forming a circuit pattern, a plating lead wire, and a reject marking on each of the unit substrates;
Forming a first insulating film on the first surface to expose a portion of the circuit pattern, the plating lead wire, and the reject marking portion, and forming a second insulating film on the second surface; And
And connecting electricity to the exposed portion of the plating lead wire to form a plating layer on the part of the exposed circuit pattern and the reject marking part.
Removing each of the unit substrates from the base substrate below and below a portion of the plating lead-in to form openings; And
And inspecting each of the unit substrates and forming a reject mark on the reject marking portion of the defective unit substrate with respect to the unit substrate where the defect is found.
Mounting a semiconductor chip on the second surface of each unit substrate; And
And electrically connecting the semiconductor chip and the circuit pattern through the opening.
KR1020100098118A 2010-10-08 2010-10-08 Printed circuit board for board-on-chip package, the package and method of fabricating the same KR20120036446A (en)
KR1020100098118A KR20120036446A (en) 2010-10-08 2010-10-08 Printed circuit board for board-on-chip package, the package and method of fabricating the same
US13/195,289 US20120087099A1 (en) 2010-10-08 2011-08-01 Printed Circuit Board For Board-On-Chip Package, Board-On-Chip Package Including The Same, And Method Of Fabricating The Board-On-Chip Package
KR20120036446A true KR20120036446A (en) 2012-04-18
ID=45924984
US (1) US20120087099A1 (en)
KR (1) KR20120036446A (en)
CN1146030C (en) * 1998-07-28 2004-04-14 精工爱普生株式会社 Semiconductor device and manufacturling method thereof, semiconductor module, circuit board and electrnic equipment
KR20090052681A (en) * 2007-11-21 2009-05-26 삼성전자주식회사 Circuit board for easily marking inferior goods of semiconductor package, its marking method and its marker
2010-10-08 KR KR1020100098118A patent/KR20120036446A/en not_active Application Discontinuation
2011-08-01 US US13/195,289 patent/US20120087099A1/en not_active Abandoned
US20120087099A1 (en) 2012-04-12
JP2007251159A (en) 2007-09-27 Integrated circuit package system
2015-11-09 WITN Withdrawal due to no request for examination