WO2004015758A1 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- WO2004015758A1 WO2004015758A1 PCT/JP2002/008193 JP0208193W WO2004015758A1 WO 2004015758 A1 WO2004015758 A1 WO 2004015758A1 JP 0208193 W JP0208193 W JP 0208193W WO 2004015758 A1 WO2004015758 A1 WO 2004015758A1
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- Prior art keywords
- semiconductor chip
- semiconductor
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- semiconductor device
- chips
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Classifications
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0657—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body
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Definitions
- the present invention relates to a semiconductor device, and more particularly, to a semiconductor device such as a stacked mono chip package (MCP) or a multi chip module (MCM) having a curved semiconductor element.
- MCP stacked mono chip package
- MCM multi chip module
- FIG. 1 is a perspective view showing a modified semiconductor chip disclosed in Japanese Patent Application Laid-Open No. 2001-118882.
- the semiconductor chip 1 is wound around a cylindrical support substrate 2 and deformed into a cylindrical shape.
- the electrode pads 1a of the semiconductor chip 1 are arranged so as to be aligned in the longitudinal direction of the cylinder, and can be mutually connected to another semiconductor chip similarly deformed into a cylindrical shape.
- FIG. 2 is a side view showing a modified semiconductor chip disclosed in Japanese Patent Application Laid-Open No. H11-3455823. .is there.
- the semiconductor chip 3 is curved such that the side on which the solder bumps 3 a as external connection electrodes are provided is concave, and the solder bumps 3 a are joined to the wiring portions 4 a of the interposer 4. Even if the interposer 4 is thermally deformed, for example, the semiconductor chip can be easily deformed (bent), so that the stress generated between the semiconductor chip 3 and the interposer 4 (that is, the solder bump 3a) is reduced. Can be done.
- the semiconductor chip 1 shown in FIG. 1 wraps around the cylindrical substrate 2 to increase the weight or the combination of chips (the chip wound around the cylinder is placed on top). In some cases, it is necessary to connect stacked chips, so it is necessary to optimize the chip pad. Therefore, it is necessary to redesign the chip, and the conventional semiconductor chip cannot be used as it is. In addition, it is necessary to precisely wind the semiconductor chip 1 around the cylindrical substrate 2, and such a method must be devised.
- the chip When a semiconductor chip is bent and flip-chip mounted as in the case of the semiconductor chip 3 shown in Fig. 2, the chip is thin and has low strength, so when connecting to an interposer or sealing with a resin, etc. Cracks may occur in the chips. In addition, since the semiconductor chip is deformed in an arc shape, it is considered that the positional accuracy of a connection portion between the interposer and the semiconductor chip is low. Disclosure of the invention
- a general object of the present invention is to provide an improved and useful semiconductor device which has solved the above-mentioned problems, and a method of manufacturing the same.
- a more specific object of the present invention is to provide a semiconductor device in which a semiconductor chip is deformed by using an ultra-thin chip and the chips are spatially arranged efficiently.
- Another object of the present invention is to provide a semiconductor device in which the degree of freedom in combining a plurality of semiconductor chips is increased and the transmission line is shortened.
- At least one semiconductor chip is formed on a surface of the semiconductor chip, and the semiconductor chip is deformed into a substantially cylindrical shape or a curved shape.
- the semiconductor chip is fixed in a deformed state by the fixing member, so that the semiconductor chip can be directly flip-chip connected to the package substrate.
- the fixing member also functions as a reinforcing member for preventing the semiconductor chip from cracking.
- the semiconductor chip is deformed into a cylindrical shape or a curved shape, a smaller package substrate for mounting the semiconductor chip in a flat state can be used.
- the projected area of the semiconductor device can be reduced.
- the position of the external connection electrode pad can be changed to an appropriate position by deforming the semiconductor chip, and the wiring on the package substrate can be shortened.
- a semiconductor device that operates at high speed can be achieved.
- the fixing member may be a resin layer formed on the inner surface of the substantially cylindrical or curved semiconductor chip. Further, in order to enable easy deformation, the thickness of the semiconductor chip is preferably 50 ⁇ or less.
- the semiconductor device according to the present invention may include a plurality of semiconductor chips flip-chip connected to each other.
- the plurality of semiconductor chips have a substantially cylindrical shape.
- a second semiconductor chip formed in a substantially cylindrical shape having a diameter larger than that of the first semiconductor chip and arranged so as to surround the outer periphery of the first semiconductor chip.
- An end of the first semiconductor chip may protrude and extend from an end of the second semiconductor chip, and the first semiconductor chip and the package substrate may be flip-chip connected.
- the plurality of semiconductor chips include a first semiconductor chip having a curved shape and a second semiconductor chip formed in a larger curved shape than the first semiconductor chip and arranged along the outer periphery of the first semiconductor chip. May be included.
- the end of the second semiconductor chip may extend farther than the end of the second semiconductor chip, and the second semiconductor chip and the package substrate may be flip-chip connected.
- the semiconductor device has a semiconductor chip formed in a plurality of curved shapes having different sizes, and is provided in a space formed by the curved shape of the larger-sized semiconductor chip and smaller than the larger-sized semiconductor chip.
- a configuration in which a semiconductor chip of a size is accommodated can also be adopted.
- Each of the plurality of semiconductor chips may be individually flip-chip connected to the package substrate.
- a plurality of semiconductor chips may be configured such that a semiconductor chip of a smaller size is flip-chip connected to a semiconductor chip of a larger size, and the semiconductor chip of the largest size is flip-chip connected to a package substrate. Good.
- the semiconductor chip includes a plurality of stacked flat semiconductor chips, and a top semiconductor chip and a package substrate in a state where a circuit formation surface faces upward among the flat semiconductor chips. It may also include a deformed semiconductor chip connected to a flip chip.
- a method of manufacturing a semiconductor device having a deformed semiconductor chip comprising supporting a flat semiconductor chip, and forming a liquid semiconductor chip on the flat semiconductor chip.
- the semiconductor chip is deformed so that the surface coated with the liquid resin is on the inside, and the liquid resin is cured to fix the semiconductor chip in a cylindrical or curved shape.
- a method of manufacturing a semiconductor device having each step of flip-chip mounting on a package substrate.
- the step of applying a liquid resin may be performed after the semiconductor chip is deformed.
- FIG. 1 is a perspective view of a semiconductor chip deformed into a cylindrical shape.
- FIG. 2 is a side view of a semiconductor chip mounted on a substrate in a curved state.
- FIG. 3 is a sectional view of the semiconductor device according to the first embodiment of the present invention.
- FIG. 4 is a block diagram of an internal circuit of a semiconductor chip used in a conventional memory device.
- FIG. 5 is a block diagram of an internal circuit when a cylindrical semiconductor chip is used as a memory device.
- FIG. 6 is a diagram showing the internal configuration of a semiconductor chip when the circuit shown in FIG. 5 is formed.
- FIG. 7 is a plan view of an interposer for mounting the semiconductor chip shown in FIG.
- FIG. 8 is a perspective view of a deformation jig for forming a semiconductor chip into a cylindrical shape.
- 9A, 9B and 9C are diagrams for explaining the operation of the deformation jig shown in FIG. It is.
- FIGS. 10A, 10B, and 10C are diagrams of a deformation jig for forming a semiconductor chip into a cylindrical shape.
- FIGS. 11A to 11E are views for explaining the operation of deforming the semiconductor chip into a cylindrical shape using the deforming jig shown in FIGS. 10A to 10C.
- FIG. 12 is a cross-sectional view of a semiconductor device incorporating a plurality of cylindrical semiconductor chips.
- FIG. 13 is a cross-sectional view showing another example of a semiconductor device incorporating a plurality of cylindrical semiconductor chips.
- FIG. 14 is a cross-sectional view showing another example of a semiconductor device incorporating a plurality of cylindrical semiconductor chips.
- FIG. 15 is a sectional view of the semiconductor chip shown in FIG.
- FIG. 16 is a side view showing an end portion of a semiconductor chip formed in a double cylindrical shape.
- FIG. 17 is a sectional view of a semiconductor device according to a second embodiment of the present invention.
- FIG. 18 is a cross-sectional perspective view of a deformation jig for forming a semiconductor chip having a curved shape.
- FIGS. 19A, 19B, and 19C are diagrams for explaining a process of forming a semiconductor chip into a curved shape using the deformation jig shown in FIG.
- FIG. 20 is a sectional view of another deforming jig for forming a semiconductor chip having a curved shape.
- FIGS. 21 and 21B are views for explaining a step of forming a semiconductor chip into a curved shape using the deformation jig shown in FIG.
- FIG. 22 is a diagram for explaining the flow of the sealing resin when sealing a plurality of curved semiconductor chips.
- FIG. 23 is a cross-sectional view of a semiconductor device having a configuration in which a small-sized semiconductor chip is accommodated in a space formed by bending a semiconductor chip.
- FIG. 24 is a cross-sectional view of an example in which a heat sink is provided on the semiconductor device shown in FIG. Figure 25 shows a small-sized semi-conductor in the space formed by the curvature of the semiconductor chip. It is sectional drawing of another example of the semiconductor device of the structure which accommodated the body chip.
- FIG. 26 is a plan view showing the solid wiring layer shown in FIG.
- FIG. 27 is a cross-sectional view of an example in which a heat sink is provided on the semiconductor device shown in FIG.
- FIG. 28 is a cross-sectional view showing still another semiconductor device on which a plurality of semiconductor chips are mounted.
- FIG. 29 is a plan view showing a wiring example in the semiconductor chip shown in FIG.
- FIGS. 30A to 30D are diagrams for explaining a process of forming a semiconductor device by simultaneously deforming a plurality of semiconductor chips.
- FIG. 3 is a sectional view of the semiconductor device according to the first embodiment of the present invention.
- the semiconductor device shown in FIG. 3 has a semiconductor chip 10 curved in a substantially cylindrical shape.
- the bump 10a serving as an external connection terminal is curved outward.
- the bump 10a is formed by solder or gold.
- the bumps 10a arranged around both sides of the semiconductor chip 10 are aligned in two rows in the longitudinal direction of the cylindrical shape.
- a coating material 11 such as a resin is applied as a fixing member and cured to form a resin layer. Therefore, the semiconductor chip is fixed by the resin layer while being curved in a cylindrical shape.
- the semiconductor chip 10 is connected to the package substrate (interposer) 12 via the bump 10a. That is, the bump 10 a of the semiconductor chip is flip-chip connected to the interposer 12.
- the semiconductor chip is sealed on the interposer 12 with a sealing resin 13.
- a solder ball 14 is provided as an external connection terminal of the semiconductor device.
- the thickness of the semiconductor chip 10 is preferably thin, and is preferably 50 ⁇ m or less.
- the semiconductor chip 10 Since the semiconductor chip 10 has a cylindrical shape, an interposer having a smaller size can be used than when the semiconductor chip 10 is mounted on the interposer in a flat state. Therefore, it is necessary to reduce the horizontal projection area of the semiconductor device. it can.
- FIG. 4 is a block diagram of an internal circuit of a semiconductor chip used for a conventional memory device.
- the data input circuit 15 and the data output circuit 16 are sometimes connected to one electrode pad 17.
- a write circuit 19 and a read circuit 20 are provided on both sides of the memory cell array 18, respectively.
- the data output circuit 16 is provided in the vicinity of the read circuit 20, the distance between the data input circuit 15 and the write circuit 19 will be long, and the chip in the chip connecting them Wiring 21 becomes longer. Such a long wiring in the chip hinders a high-speed read operation.
- FIG. 5 is a block diagram of an internal circuit when the cylindrical semiconductor chip 10 according to the present embodiment is used as a memory device.
- FIG. 6 is a diagram showing the internal configuration of the semiconductor chip 10 when the circuit shown in FIG. 5 is formed.
- the data input circuit 15 is provided near the write circuit 19
- the data output circuit 16 is provided near the read circuit 20.
- the data input terminal 22 is provided in the vicinity of the data input circuit 15 and the write circuit 19 in an aligned state.
- the data output terminal 23 is provided in the vicinity of the data input circuit 15 and the write circuit 19 so as to be aligned.
- the row of data input terminals 22 corresponds to the electrodes arranged on one side of the semiconductor chip 10, and the row of data output terminals 23 corresponds to the electrodes arranged on the opposite side of the semiconductor chip 10. .
- Each of the columns of the data input terminals 22 and the columns of the data output terminals 23 includes a clock (CLK) terminal 24.
- the rows of the data input terminals 22 and the rows of the data output terminals 23 extend in parallel with each other in two rows.
- the electrodes of the semiconductor chip 10 By connecting the electrodes of the semiconductor chip 10 to the electrode pads 25 of the interposer 12 shown in FIG. 7, the data input terminal 22 and the corresponding data output terminal 23 are interconnected.
- the connection can be made by a wiring 26 formed on one poser 12. Therefore, the wiring 21 (see FIG. 4) formed in the conventional semiconductor chip can be replaced with a short wiring on the interposer 12, and high-speed operation can be realized.
- FIG. 8 is a perspective view of a jig for forming a semiconductor chip into a cylindrical shape by the first method.
- the deforming jig 30 shown in FIG. 8 includes a center indicating portion 31 and an arc-shaped possible portion 32 rotatably provided on both sides of the supporting portion 31.
- One end of the movable portion 32 is rotatably supported by the support portion.
- the support portion 31 has a hole 31a for vacuum suction, and is configured to be able to vacuum-suck a central portion of the semiconductor chip 10 in a flat state.
- a heating wire 32 a is incorporated in the movable portion 32, and is configured to be able to heat when deformed by the deformation jig 30. '
- the flat surface of the semiconductor chip 10 on which the bumps 10 a are provided is vacuum-adsorbed by the support portion 31.
- the coating material 11 is applied to the back surface of the semiconductor chip 10.
- the semiconductor chip 10 is gradually deformed along the arc of the movable part 32 by rotating the movable part 32.
- the movable portion 32 is rotated until the semiconductor chip has a substantially cylindrical shape.
- the coating material 11 applied to the back surface of the semiconductor chip 10 is thermally cured by a heating wire incorporated in the movable part 32.
- the movable portion 32 is returned to the original state, the vacuum suction is released, and the substantially cylindrical semiconductor chip 10 is removed from the deformation jig 30. At this time, the cylindrical shape of the semiconductor chip 10 is maintained by the cured coating material 11.
- the coating may be applied to the back surface of the semiconductor chip 10 (the inner surface of the cylinder) after the semiconductor chip is deformed into a cylindrical shape, and then cured. Further, the rotation of the movable portion 32 is stopped in a state where the semiconductor chip 10 is curved before the semiconductor chip 10 becomes cylindrical, and the coating material 11 is cured to cure the curved semiconductor chip. Top 10 can also be formed.
- the coating material 11 used for fixing the shape is not particularly limited, but it is preferable to use a liquid epoxy resin or the like excellent in quick drying property. Also, since the semiconductor chip 10 is sealed with a sealing resin, the coating material 11 is made of a resin having characteristics similar to those of the sealing resin 13 so that a semiconductor device can be mounted. This can prevent peeling in the package due to stress at the time of reflow, which is a problem during reflow.
- the thickness of the coating material 11 is smaller, the influence of the shrinkage of the coating material, such as a further change in the shape of the chip, is smaller. Therefore, it is considered that the thickness of the coating material 11 should be thinner than the thickness of the chip, and the thinner the coating material, the better.
- the temperature at which the coating material 11 is thermally cured is preferably 200 ° C. or less in consideration of the effect on the semiconductor chip 10.
- the semiconductor chip is not wound around the cylindrical substrate to be deformed, and the semiconductor chip can be reduced in weight because no cylindrical member is used. Further, a semiconductor chip having a conventional design can be used without being changed so that the electrode pads and the like of the semiconductor chip can be wound around the cylindrical member and stacked.
- a coating material By fixing the shape of the semiconductor chip with a coating material, not only can the shape of the chip be fixed arbitrarily, but also the strength of the semiconductor chip can be increased, and chip cracking during resin sealing and flip chip connection can be prevented. Can be.
- FIGS. 10A, 10B and 10C are diagrams of a deformation jig for forming a semiconductor chip into a cylindrical shape by the second method.
- FIGS. 11A to 11E are diagrams for explaining the operation of deforming a semiconductor chip into a cylindrical shape by the second method. .
- the support jig 35 shown in FIG. 10A is attached to the back surface of the semiconductor chip (the surface opposite to the surface on which the bumps 10a are provided). Then, the semiconductor chip 10 is vacuum-sucked through the holes 35 a provided in the support jig 35.
- the semiconductor chip 10 supported by the support jig 35 is placed on the curved jig 36 and pressed by the support jig 35.
- the bending jig 36 is a jig whose cross section is curved in a substantially semicircular shape, and has elasticity.
- the semiconductor chip 10 When the semiconductor chip 10 is deformed by pressing the support jig 35, the semiconductor chip 10 is deformed into a shape along the inner surface of the curved jig 36 as shown in FIG. 11C. .
- the vacuum jig 36 By providing the vacuum jig 36 with the vacuum suction section, the semiconductor chip 10 can be maintained along the inner surface of the bending jig. It is preferable that a heating wire for heating is incorporated in the bending jig 36.
- the support jig 35 is removed from the semiconductor chip 10 and the bending jig 36 is pressed from the left and right by the pressing jigs 37 (37A, 37B). .
- the cross section of the pressing jig 36 is deformed to a shape closer to a circular shape than a semicircular shape. Therefore, the semiconductor chip 10 disposed inside the bending jig 36 is deformed into a substantially cylindrical shape.
- the coating material 11 is applied to the back surface of the semiconductor chip and cured as in the first method described above, whereby the semiconductor chip 10 is cured. Can be fixed so as to maintain the cylindrical shape.
- FIG. 12 is a cross-sectional view of a semiconductor device incorporating a plurality of cylindrical semiconductor chips.
- three semiconductor chips 10 are flip-chip connected to a package substrate (interposer) 38 and sealed with a sealing resin 39.
- a solder pole 40 is provided as an external connection terminal.
- the horizontal projection area of the semiconductor device can be made smaller than when a flat semiconductor chip is used. Further, all of the plurality of semiconductor chips 10 can be flip-chip connected.
- FIG. 13 is a cross-sectional view showing another example of a semiconductor device incorporating a plurality of cylindrical semiconductor chips.
- three are placed on each side of interposer 41.
- a total of six semiconductor chips 10 are flip-chip connected, and each is sealed with a sealing resin 42.
- the solder balls 43 as external connection terminals are arranged outside the sealing resin 42 on one side, and have dimensions larger than the thickness of the sealing resin.
- the semiconductor chip 10 shown in FIG. 13 has an elliptical shape as if the cylindrical shape was slightly crushed. In this way, the thickness of the sealing tree 42 can be reduced.
- FIG. 14 is a sectional view showing still another example of a semiconductor device incorporating a plurality of cylindrical semiconductor chips. In the example shown in FIG.
- FIG. 14 is a double cylindrical shape.
- FIG. 15 is a sectional view of the semiconductor chip shown in FIG. That is, as shown in FIG. 15, by providing a cylindrical semiconductor chip 1 OB (outer peripheral chip) outside the cylindrical semiconductor chip 1 OA (inner peripheral chip), a plurality of semiconductor chips can be formed. It is formed integrally.
- the semiconductor chips 1OA and 10B are flip-chip connected to the interposer 45 as if they were one semiconductor chip.
- the semiconductor chips 1 OA and 1 OB are sealed on the interposer 45 by a sealing resin 46.
- solder balls 47 are provided as external connection terminals.
- FIG. 16 is a side view showing an end portion of a semiconductor chip formed in a double cylindrical shape.
- the surface of the outer semiconductor chip on which the bumps are formed faces the inner semiconductor chip 10B, and has a cylindrical inner peripheral surface. Therefore, external connection terminals cannot be provided on the outer semiconductor chip 10B.
- the surface (circuit formation surface) on which the bumps of the inner semiconductor chip 1OA are formed becomes a cylindrical outer peripheral surface and faces outward. Therefore, the end of the inner semiconductor chip 10A is made to protrude from the end of the outer semiconductor chip 10B, and the protruding portion is provided with a bump 10Aa as an external connection terminal.
- the outer semiconductor chip 10B is connected to the interposer 47 via the wiring in the inner semiconductor chip 10B and the bump 10OA.
- a plurality of semiconductor chips can be spatially and efficiently arranged by overlapping the semiconductor chips to form a cylindrical shape, and the density of the semiconductor chips can be improved.
- FIG. 17 is a sectional view of a semiconductor device according to a second embodiment of the present invention.
- the semiconductor device shown in FIG. It has a curved semiconductor chip 50.
- the semiconductor chip 50 is curved so that the surface (circuit forming surface) on which the bumps 50a as external connection terminals are provided is inside.
- the bump 50a is formed of solder or gold.
- a coating material 11 such as a resin is applied to the circuit forming surface of the semiconductor chip 50 and hardened to form a resin layer.
- the semiconductor chip 50 is fixed by a resin layer in a curved state.
- the semiconductor chip 50 is connected to a package substrate (interposer) 52 via a bump 50a. That is, the bump 50 a of the semiconductor chip is flip-chip connected to the interposer 52.
- the semiconductor chip 50 is sealed with the sealing resin 53 on the interposer 52.
- a solder pole 54 is provided as an external connection terminal of the semiconductor device.
- the thickness of the semiconductor chip 50 is thin, and it is preferable that the thickness be 50 ⁇ or less.
- the semiconductor chip 50 Since the semiconductor chip 50 is curved, a smaller interposer can be used than when the semiconductor chip 50 is mounted on the interposer in a flat state. Therefore, the horizontal projection area of the semiconductor device can be reduced.
- a curved semiconductor chip 50 can be formed by using the method for forming a cylindrical semiconductor chip 10 according to the first embodiment described above.
- a semiconductor chip 50 having a curved shape can be formed using a deformation jig 30 shown in FIG.
- the flat semiconductor chip 50 is fixed to the support portion 31 with the front and back opposite to the semiconductor chip 10 shown in FIG. That is, the bump 50a is fixed to the supporting portion 31 with the bump 50a facing downward.
- the rotation of the movable portion is stopped, and the coating material: 11 is cured to cure the semiconductor chip in a curved shape.
- the semiconductor chip 50 can also be formed by using the deformation jigs 35 and 36 shown in FIGS. 1OA and 1OB. Also in this case, the semiconductor chip 50 in a flat state is attached to the indicating jig 35 with the front and back reversed, that is, with the bumps 50a facing down. Then, by coating and curing the coating material 11 in the state shown in FIG. 11C, a semiconductor chip 50 fixed in a curved shape is obtained.
- FIG. 18 is a sectional perspective view of a deforming jig for forming a curved semiconductor chip.
- the deforming jig 55 shown in FIG. 18 is a block-shaped jig in which a concave portion 55a is provided in the center of the bottom to form a space.
- a hole 55b for vacuum suction is opened at the center of the space at the bottom.
- an injection passage 50c for injecting the coating material is opened in the space at the bottom.
- a heating wire 50d for heating is embedded near the bottom of the deformation jig.
- the bottom of the deformation jig 55 is placed on the back surface of the semiconductor chip 50 in a flat state. In this state, the space of the concave portion 55a is located at the center of the semiconductor chip 55. A coating material 56 is applied to the circuit forming surface of the semiconductor chip 50.
- the semiconductor chip 50 is vacuum-sucked through the holes 55 for vacuum suction, the semiconductor chip 50 is in a curved state as shown in FIG. 19B.
- a coating material is injected from an injection passage between the semiconductor chip 50 and the bottom surface of the concave portion of the deformation jig, and is heated and cured by a heating wire.
- the semiconductor chip 50 is fixed in a curved shape by the coating material 56 on the circuit forming surface side and the coating material on the back surface side.
- FIG. 20 is a sectional view of another deforming jig for forming a semiconductor chip having a curved shape.
- the deforming jig 60 shown in FIG. 20 includes a central supporting portion 6 OA that supports a central portion of the semiconductor chip 50, and end supporting portions 60 B and 60 B that support both ends of the semiconductor chip 50. 6 0 C.
- the center support portion 6OA and the end support portions 6OB and 60C vacuum-suck the semiconductor chip 50 in a flat state through the vacuum suction holes 60a.
- FIG. 20 shows a state in which the semiconductor chip 50 in a flat state is vacuum-adsorbed to the deformation jig 60.
- the center support 6 OA is moved relative to the end supports 6 OB and 60 C so that the center of the semiconductor chip 50 is bent and deformed. Moving. As a result, the semiconductor chip 50 is deformed into a curved state between the central portion and the end while the central portion and the end maintain a flat surface.
- a coating material 56 is applied to the circuit forming surface and the back surface of the semiconductor chip 50 and cured. As a result, the semiconductor chip 50 is fixed in a curved shape.
- the direction in which the space formed by the curvature of the semiconductor chip opens is aligned with the flow direction of the sealing resin (indicated by the arrow in the figure).
- the sealing resin is easily introduced into the space formed between the semiconductor chip 50 and the interposer 52, and the sealing resin is easily filled into the space. Adjust the position of the gate 65 to be injected.
- Such a configuration is the same also in the cylindrical semiconductor chip 10 according to the first embodiment described above.
- FIG. 23 is a cross-sectional view of a semiconductor device having a configuration in which a small-sized semiconductor chip is accommodated in a space formed by bending a semiconductor chip.
- a large-sized semiconductor chip 50A is formed in a curved shape
- a slightly smaller semiconductor chip 50B is formed in a curved shape and arranged inside the semiconductor chip 50A.
- a semiconductor chip 50 C is arranged.
- Each of the semiconductor chips 50 A, 50 B, and 50 C is flip-chip connected to the interposer 52, and is sealed with a sealing resin 53.
- FIG. 23 The configuration shown in FIG. 23 is the same as the stacked semiconductor chips, but all the semiconductor chips can be flip-chip connected to one interposer 52. If there is a risk of heat generation due to an increase in the mounting density of the semiconductor chips, as shown in FIG. 24, a heat sink 66 made of a metal plate or the like is provided on the upper surface of the sealing resin 53 as shown in FIG. It may be provided.
- FIG. 25 is a cross-sectional view of another example of a semiconductor device having a configuration in which a small-sized semiconductor chip is accommodated in a space formed by bending a semiconductor chip.
- the semiconductor chip 50B is arranged upside down, and the semiconductor chip 5OA Are flip-chip bonded to each other.
- the semiconductor chip 50C is arranged in a space formed between the semiconductor chip 50A and the semiconductor chip 50B.
- the semiconductor chip 50C is flip-chip connected to the semiconductor chip 50B.
- a solid wiring layer 67 such as copper is formed in the interposer 52 as shown in FIG.
- Heat radiation from the semiconductor chip 50B can be promoted.
- a heat sink 66 made of a metal plate or the like may be provided on the upper surface of the sealing resin 53 to further promote heat radiation.
- the semiconductor chips are flip-chip connected to each other, and the connection wiring length between the chips is shortened, so that high-speed operation can be realized.
- FIG. 28 is a cross-sectional view showing still another semiconductor device on which a plurality of semiconductor chips are mounted.
- a plurality of semiconductor chips are connected in a flat state on the interposer 52, and the connection between the highest-order chip and the interposer is made by a chip having a changed shape.
- the semiconductor chips 7OA and 70B are stacked so that the back faces each other, and the semiconductor chip 7OA is flip-chip connected to the interposer 52. Therefore, the semiconductor chip 70B is in a state where the circuit formation surface faces upward.
- a semiconductor chip 70 C is further flip-chip connected to the semiconductor chip 70 B.
- the semiconductor chip 70B and the interposer 52 are generally connected by a bonding wire, but in the example shown in FIG. Instead, modified semiconductor chips 70 D and 70 E are used.
- the shape of the semiconductor chips 7 OD and 70 E connected instead of the bonding wires can be changed to achieve the stacking. No restrictions on the thickness of semiconductor chips It becomes. Also, even in the case of a semiconductor chip with a large number of electrode pads or a large number of stacked chips, there is no need to connect the electrode pads individually.
- the connection with the interposer can be made at once by flip chip. Therefore, the semiconductor chip and the interposer can be connected in a short time.
- the type of the semiconductor chips 70D and 70E for connecting the highest-order semiconductor chip to the interposer or the lower-order semiconductor chip is not particularly limited, and may have a semiconductor circuit or may have only a wiring pattern. It may be formed.
- FIG. 29 is a plan view showing a wiring example in the semiconductor chip 7OD.
- the electrode pads 71 connected to the electrode pads of the semiconductor chip 70B are arranged near one side, and the electrode pads 72 connected to the electrode pads of the interposer 52 are arranged near the opposite side. Is done.
- the pattern wiring 73 connects the electrode pad 71 and the electrode pad 72, and connects the semiconductor chip 7 OB and the interposer 52.
- the pattern wiring 74 connects a circuit in the semiconductor 7 OD and the interposer 52.
- the pattern wiring 75 connects a circuit in the semiconductor 7OD and the semiconductor chip 70B.
- the pattern wiring 76 simultaneously connects the semiconductor chip 70B, the semiconductor chip 70D, and the interposer 52.
- 3A to 3OD are diagrams for explaining a process of forming a semiconductor device by simultaneously deforming a plurality of semiconductor chips.
- a plurality of semiconductor chips 80A, 80B, 8OC are flip-chip connected to each other as shown in Fig. 3 OA, and an underfill material 81 is filled between semiconductor chips and fixed as shown in Fig. 3 OB. .
- the integrally fixed semiconductor chips 8OA, 8OB, and 80C are deformed (curved) by any of the methods described above, and the semiconductor chips 80B, 80C, and 8OA are deformed.
- resin 82 is filled and cured as a fixing member.
- the deformed semiconductor chips 80A, 8OB, 80C are flip-chip connected to the interposer 52 as shown in FIG. According to the above deformation method, a plurality of semiconductor chips can be deformed collectively. Further, even a small-sized semiconductor chip (semiconductor chip A80 in this case) that cannot be easily deformed by itself can be easily deformed.
- FIGS. 30A to 30D three semiconductor chips are used.
- the semiconductor chips 80B and 80C may be used as one large-sized semiconductor chip.
- the present invention is not limited to the specifically disclosed embodiments described above, and various modifications and improvements may be made without departing from the scope of the present invention.
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Description
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Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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JP2004527308A JP4299783B2 (ja) | 2002-08-09 | 2002-08-09 | 半導体装置及びその製造方法 |
PCT/JP2002/008193 WO2004015758A1 (ja) | 2002-08-09 | 2002-08-09 | 半導体装置及びその製造方法 |
CNB028292510A CN100401486C (zh) | 2002-08-09 | 2002-08-09 | 半导体装置及其制造方法 |
EP02758823A EP1528593B1 (en) | 2002-08-09 | 2002-08-09 | Semiconductor device and method for manufacturing the same |
KR1020047021035A KR100630588B1 (ko) | 2002-08-09 | 2002-08-09 | 반도체 장치 및 그 제조 방법 |
DE60233077T DE60233077D1 (de) | 2002-08-09 | 2002-08-09 | Halbleiterbauelement und verfahren zu seiner herstellung |
TW091118453A TWI234827B (en) | 2002-08-09 | 2002-08-15 | Semiconductor device and manufacturing method thereof |
US11/006,664 US7138723B2 (en) | 2002-08-09 | 2004-12-08 | Deformable semiconductor device |
Applications Claiming Priority (1)
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PCT/JP2002/008193 WO2004015758A1 (ja) | 2002-08-09 | 2002-08-09 | 半導体装置及びその製造方法 |
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US11/006,664 Continuation US7138723B2 (en) | 2002-08-09 | 2004-12-08 | Deformable semiconductor device |
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US (1) | US7138723B2 (ja) |
EP (1) | EP1528593B1 (ja) |
JP (1) | JP4299783B2 (ja) |
KR (1) | KR100630588B1 (ja) |
CN (1) | CN100401486C (ja) |
DE (1) | DE60233077D1 (ja) |
TW (1) | TWI234827B (ja) |
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JP2018098512A (ja) * | 2011-05-06 | 2018-06-21 | イリディウム メディカル テクノロジー カンパニー リミテッドIridium Medical Technology Co.,Ltd. | 非平面デバイスの組立方法 |
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US9114004B2 (en) | 2010-10-27 | 2015-08-25 | Iridium Medical Technology Co, Ltd. | Flexible artificial retina devices |
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US8613135B2 (en) | 2011-05-06 | 2013-12-24 | National Tsing Hua University | Method for non-planar chip assembly |
US9155881B2 (en) | 2011-05-06 | 2015-10-13 | Iridium Medical Technology Co, Ltd. | Non-planar chip assembly |
TWI507182B (zh) * | 2011-10-26 | 2015-11-11 | Iridium Medical Technology Co Ltd | 用以製造可撓性人工視網膜裝置的方法 |
TWI473220B (zh) * | 2012-01-10 | 2015-02-11 | Xintec Inc | 半導體堆疊結構及其製法 |
US10446728B2 (en) * | 2014-10-31 | 2019-10-15 | eLux, Inc. | Pick-and remove system and method for emissive display repair |
EP3240026A4 (en) * | 2014-12-24 | 2018-09-05 | NSK Ltd. | Power semiconductor module and electric power steering device employing same |
KR20170060372A (ko) * | 2015-11-24 | 2017-06-01 | 에스케이하이닉스 주식회사 | 휘어진 칩을 이용한 플렉서블 패키지 |
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JPH11345823A (ja) * | 1998-05-29 | 1999-12-14 | Sony Corp | 半導体チップのフリップチップ実装方法及び実装治具 |
JP2000031316A (ja) * | 1998-07-09 | 2000-01-28 | Nec Corp | 表面実装型半導体装置の実装構造 |
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KR100506963B1 (ko) * | 1998-10-05 | 2005-08-10 | 세이코 엡슨 가부시키가이샤 | 반도체 장치 및 그의 제조방법 |
TW460927B (en) * | 1999-01-18 | 2001-10-21 | Toshiba Corp | Semiconductor device, mounting method for semiconductor device and manufacturing method for semiconductor device |
JP3414342B2 (ja) * | 1999-11-25 | 2003-06-09 | 日本電気株式会社 | 集積回路チップの実装構造および実装方法 |
JP4126891B2 (ja) * | 2001-08-03 | 2008-07-30 | セイコーエプソン株式会社 | 半導体装置の製造方法 |
JP2003051568A (ja) * | 2001-08-08 | 2003-02-21 | Nec Corp | 半導体装置 |
US20040104463A1 (en) * | 2002-09-27 | 2004-06-03 | Gorrell Robin E. | Crack resistant interconnect module |
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US6888238B1 (en) * | 2003-07-09 | 2005-05-03 | Altera Corporation | Low warpage flip chip package solution-channel heat spreader |
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2002
- 2002-08-09 EP EP02758823A patent/EP1528593B1/en not_active Expired - Lifetime
- 2002-08-09 DE DE60233077T patent/DE60233077D1/de not_active Expired - Lifetime
- 2002-08-09 JP JP2004527308A patent/JP4299783B2/ja not_active Expired - Fee Related
- 2002-08-09 KR KR1020047021035A patent/KR100630588B1/ko not_active IP Right Cessation
- 2002-08-09 WO PCT/JP2002/008193 patent/WO2004015758A1/ja active Application Filing
- 2002-08-09 CN CNB028292510A patent/CN100401486C/zh not_active Expired - Fee Related
- 2002-08-15 TW TW091118453A patent/TWI234827B/zh not_active IP Right Cessation
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2004
- 2004-12-08 US US11/006,664 patent/US7138723B2/en not_active Expired - Fee Related
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JPH06244243A (ja) * | 1992-12-24 | 1994-09-02 | Hitachi Ltd | 半導体装置およびその製造方法 |
JPH11345823A (ja) * | 1998-05-29 | 1999-12-14 | Sony Corp | 半導体チップのフリップチップ実装方法及び実装治具 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007266563A (ja) * | 2006-03-29 | 2007-10-11 | Hynix Semiconductor Inc | フォールデッドチッププレーナスタック型パッケージ |
JP2018098512A (ja) * | 2011-05-06 | 2018-06-21 | イリディウム メディカル テクノロジー カンパニー リミテッドIridium Medical Technology Co.,Ltd. | 非平面デバイスの組立方法 |
JP2016537814A (ja) * | 2013-12-19 | 2016-12-01 | インテル・コーポレーション | 集積回路ダイデバイス、柔軟性を伴って包まれた集積回路ダイデバイス、及び、柔軟性を伴って包まれた集積回路ダイを基板に実装する方法 |
US12020972B2 (en) * | 2020-04-29 | 2024-06-25 | Semiconductor Components Industries, Llc | Curved semiconductor die systems and related methods |
Also Published As
Publication number | Publication date |
---|---|
EP1528593A4 (en) | 2008-02-27 |
US20050082684A1 (en) | 2005-04-21 |
KR100630588B1 (ko) | 2006-10-04 |
DE60233077D1 (de) | 2009-09-03 |
JPWO2004015758A1 (ja) | 2005-12-02 |
CN100401486C (zh) | 2008-07-09 |
EP1528593A1 (en) | 2005-05-04 |
JP4299783B2 (ja) | 2009-07-22 |
TWI234827B (en) | 2005-06-21 |
US7138723B2 (en) | 2006-11-21 |
CN1633704A (zh) | 2005-06-29 |
KR20050009759A (ko) | 2005-01-25 |
EP1528593B1 (en) | 2009-07-22 |
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