This U.S. non-provisional patent application claims priority under 35 U.S.C. §119 to Korean Patent Application No. 10-2010-0003968, filed on Jan. 15, 2010, in the Korean Intellectual Property Office (KIPO), the entire contents of which are hereby incorporated by reference.
1. Field
Example embodiments relate to a semiconductor package.
2. Description of the Related Art
As the electronic industry develops, demands for high-performance, high-speed, and small electronic components have also been increased. To satisfy such demands, it is required to mount many kinds of semiconductor chips in a semiconductor package in addition to mounting the same kind of semiconductor chips in a semiconductor package. However, since different semiconductor chips have different sizes and functions, mounting different semiconductor chips on the same substrate is limited due to various factors, for example, horizontal area increases and/or wire sweeping.
Example embodiments provide a semiconductor package on which two or more kinds of semiconductor chips may be mounted.
In accordance with example embodiments, a semiconductor package may include a base substrate having a substrate part and at least one support part. The substrate part may include a first surface on which at least one first connection terminal is disposed and a second surface opposite to the first surface. The at least one support part may be on the first surface and may have an area smaller than that of the first surface. The semiconductor package may further include at least one first semiconductor chip on the at least one support part and at least one second semiconductor chip on the first surface under the at least one first semiconductor chip. In example embodiments, the at least one second semiconductor chip may have a top surface and at least two side surfaces, the top surface being at an elevation lower than a top surface of the at least one support part and the at least two side surfaces may be arranged to face the at least one support part.
In accordance with example embodiments, a semiconductor package may include a base substrate comprising a first surface and a second surface opposite to the first surface, the first surface having a concave-convex shape formed by a protrusion and a recess, at least one first semiconductor chip disposed on a topside of the protrusion forming the concave-convex shape of the first surface, and at least one second semiconductor chip in the recess of the first surface under the at least one first semiconductor chip.
Example embodiments provide semiconductor packages that may include a substrate including a substrate part and at least one support part. The substrate part may include a first surface on which at least one first connection terminal is disposed and a second surface opposite to the first surface. The support part may be disposed on the first surface and may have an area smaller than that of the first surface. In example embodiments, at least one first semiconductor chip may be disposed on the support part and at least one second semiconductor chip may be disposed on the first surface under the first semiconductor chip.
In example embodiments, the substrate may further include a first insulating film that covers top and lateral sides of the support part and the first surface adjoining the support part but exposes the first connection terminal, at least one second connection terminal disposed on the second surface, and a second insulating film that covers the second surface but exposes the second connection terminal.
In example embodiments, the second semiconductor chip may be mounted in a center region of the first surface, and the support part may have a closed curve shape surrounding the second semiconductor chip. In example embodiments, an outer wall of the support part may be spaced apart from a sidewall of the substrate part.
In example embodiments, the support part may include a sloped sidewall.
In example embodiments, the first semiconductor chip may include a first through via, the second semiconductor chip may include a second through via, and the first and second semiconductor chips may be mounted on the substrate by a flip chip bonding method. In example embodiments, the first semiconductor chip may further include a re-distribution pad disposed on a surface facing the substrate, and the second through via and the re-distribution pad may be electrically connected to each other through a bump disposed therebetween.
In example embodiments, the at least one first semiconductor chip may be a plurality of first semiconductor chips mounted on the substrate by a wire bonding method, and end parts of the plurality of first semiconductor chips may be arranged in a step shape.
In example embodiments, the support part may include a plurality of island-shaped parts two-dimensionally arranged on the substrate part at a predetermined or preset distance from each other.
In example embodiments, the first semiconductor chip may be a memory chip, and the second semiconductor chip may be a logic chip.
In example embodiments, the first semiconductor chip may be an active device, and the second semiconductor chip may be a passive device.
In example embodiments, the semiconductor package may further include a first solder ball contacting with the first connection terminal, and a second solder ball contacting with the second connection terminal, wherein the first and second solder balls may have different sizes.
In example embodiments, the substrate part and the support part may comprise a bismaleimide triazine resin, an alumina-containing ceramic material, or a glass-containing ceramic material.
In example embodiments, the first and second insulating films may be photoresist films.
In example embodiments, the first semiconductor chip may be larger than the second semiconductor chip.
In example embodiments, semiconductor packages may include a substrate including a first surface and a second surface opposite to the first surface. The first surface may have a concave-convex shape formed by a protrusion and a recess. In example embodiments, at least one first semiconductor chip may be disposed on a topside of the protrusion forming the concave-convex shape of the first surface and at least one second semiconductor chip may be mounted in the recess of the first surface under the first semiconductor chip.
The accompanying drawings are included to provide a further understanding of example embodiments, and are incorporated in and constitute a part of this specification. The drawings illustrate example embodiments and, together with the description, serve to explain example embodiments. In the drawings:
Detailed example embodiments are disclosed herein. However, specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments. Example embodiments may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
Accordingly, while example embodiments are capable of various modifications and alternative forms, embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit example embodiments to the particular forms disclosed, but to the contrary, example embodiments are to cover all modifications, equivalents, and alternatives falling within the scope of example embodiments. Like numbers refer to like elements throughout the description of the figures.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
It will be understood that when an element is referred to as being “connected” or “coupled” to another element, it may be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly connected” or “directly coupled” to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between”, “adjacent” versus “directly adjacent”, etc.).
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising,”, “includes” and/or “including”, when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
Example embodiments will be described below in more detail with reference to the accompanying drawings. Example embodiments may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concepts to those skilled in the art. In the drawings, the dimensions of layers and regions are exaggerated for clarity of illustration. It will also be understood that when a layer (or film) is referred to as being ‘on’ another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present. Further, it will be understood that when a layer is referred to as being ‘under’ another layer, it can be directly under, and one or more intervening layers may also be present. In addition, it will also be understood that when a layer is referred to as being ‘between’ two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present. Like reference numerals refer to like elements throughout.
Referring to
The substrate part 1 and the support part 9 may be formed of a bismaleimide triazine resin, an alumina-containing ceramic material, or a glass-containing ceramic material. The support part 9 may be fixed to the substrate part 1 by fusing.
The front side and lateral sides of the support part 9 and the first surface 1a of the substrate part 1 may be covered with a first insulating film 11. The first insulating film 11 may also cover circuit patterns disposed on the first surface 1a. The first insulating film 11 may cover the edge inner terminals 3a and 3b and the second chip inner terminals 5 in a manner such that the front sides of the edge inner terminals 3a and 3b and the second chip inner terminals 5 are partially exposed. The second surface 1b of the substrate part 1 may be covered with a second insulating film 13. The second insulating film 13 may cover the external terminals 7 in a manner such that the front sides of the external terminals 7 are partially exposed. The first and second insulating films 11 and 13 may be photoresist films. As described above, the base substrate 20 of example embodiments may have an integrally formed protrusion. That is, the topside of the base substrate 20 may have a height difference. The base substrate 20 may be fabricated by a low-temperature co-firing ceramic process or a high-temperature co-firing ceramic process. Also, the base substrate 20 may be formed using a process of fabricating a resin printed circuit board.
Referring again to
In example embodiments, the first semiconductor chips 31 to 38 may be memory chips, however, example embodiments are not limited thereto. For example, the first semiconductor chips 31 to 38 may be active devices. In example embodiments, the second semiconductor chip 60 may be a logic chip or controller, however, example embodiments are not limited thereto. For example, the second semiconductor chip 60 may be a passive device.
After the semiconductor chips 31 to 38 and 60 are mounted, the base substrate 20 may be covered with a molding film 90. The molding film 90 may be formed of an epoxy-containing resin. A space formed on a center area of the first surface 1a of the substrate part 1 by the second semiconductor chip 60, the support part 9, and the first semiconductor chips 31 to 38 may be filled or not filled with the molding film 90. In addition, bumps 80, for example solder balls, may be attached to the external terminals 7.
In example embodiments, the base substrate 20 may include the support part 9, and the support part 9 may support the first semiconductor chips 31 to 38 and may provide a space in which the second semiconductor chip 60 may be mounted. Therefore, different semiconductor chips can be efficiently mounted on the same base substrate without a horizontal area increase. In addition, since the support part 9 supporting the first semiconductor chips 31 to 38 may be formed as part of the base substrate 20, distortion of the semiconductor package 100 may be reduced, and wire routability can be increased.
In example embodiments, semiconductor chips may be mounted, by a flip chip bonding method, on a semiconductor package whose plan view is similar to
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The support part 9 may be provided as a protrusion, however the support part 9 illustrated in
The above-described semiconductor package technology may be applied to various semiconductor devices and package modules including semiconductor devices.
The above-described semiconductor package technology may be applied to an electronic system.
The electronic system 1300 may be used as a mobile system, a personal computer, an industrial computer, or a logic system capable of performing various functions. For example, the mobile system may be one of 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. If the electronic system 1300 is a wireless communication device, the electronic system 1300 may use a communication interface protocol such as a third generation communication system (e.g., CDMA, GSM, NADC, E-TDMA, WCDMA, or CDMA2000).
A semiconductor device to which example embodiments are applied may be provided in the form of a memory card.
According to example embodiments, the horizontal size of the semiconductor package is not increased, and wire sweeping may be prevented or reduced. In addition, since the support part supports the first semiconductor chip, distortion of the semiconductor package may be reduced, and wire routability may be increased.
The above-disclosed subject matter is to be considered illustrative and not restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments, which fall within the true spirit and scope of the inventive concepts. Thus, to the maximum extent allowed by law, the scope of example embodiments is to be determined by the broadest permissible interpretation of the following claims and their equivalents, and shall not be restricted or limited by the foregoing detailed description.
Number | Date | Country | Kind |
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10-2010-0003968 | Jan 2010 | KR | national |