WO2004097917A1 - 半導体装置の製造方法、半導体ウエハおよび半導体装置 - Google Patents
半導体装置の製造方法、半導体ウエハおよび半導体装置 Download PDFInfo
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- WO2004097917A1 WO2004097917A1 PCT/JP2004/000583 JP2004000583W WO2004097917A1 WO 2004097917 A1 WO2004097917 A1 WO 2004097917A1 JP 2004000583 W JP2004000583 W JP 2004000583W WO 2004097917 A1 WO2004097917 A1 WO 2004097917A1
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Definitions
- the present invention relates to a method for manufacturing a semiconductor device, a semiconductor wafer, and a semiconductor device, and particularly to a method for manufacturing a semiconductor device having a multilayer wiring structure, a semiconductor wafer, and a semiconductor device.
- a large number of chip areas divided by scribe areas are defined on a semiconductor wafer.
- a large number of semiconductor elements are formed in each chip area, and a multilayer wiring structure in which wiring layers and interlayer insulating films are alternately stacked thereon is formed.
- dicing is performed in a scribe area to separate each chip. Dicing has come to be performed by chipping in which the entire thickness of a semiconductor wafer is cut with a dicing saw.
- the scribe area is not an area used as a circuit. Conventionally, an alignment mark / test element group is formed, but in other areas, dicing is performed with the semiconductor wafer surface exposed. The cross section of the semiconductor chip separated by chipping shows irregularities like burrs. '
- Japanese Patent Application Laid-Open No. Hei 4-282852 proposes that dicing is performed in a region between the insulating layers while leaving a narrow insulating layer on both sides of the center line of the scribe region.
- the insulating layer is described as being harder than the semiconductor and preventing recesses in the cut surface from extending beyond the scribe area and into the chip.
- FIG. 22 shows the structure of the separation preventing groove disclosed in Japanese Patent Application Laid-Open No. 9-194949.
- Semiconductor elements are formed on the surface of a silicon substrate 101, and an interlayer insulating film 102 is formed thereon. Is formed.
- the wiring 110 is formed on the interlayer insulating film 102, and the interlayer insulating film 104 is formed thereon.
- a bonding pad 113 connected to the wiring 110 is formed, and an insulating layer 105 formed of a silicon oxide layer or a stacked layer of a silicon oxide layer and a silicon nitride layer and a polyimide are formed thereon as an uppermost insulating layer.
- a protective layer 107 is formed.
- the protective layer 107 and the insulating layer 105 are simultaneously formed along the periphery of the chip.
- a penetration preventing groove 108 penetrating is formed.
- the peeling preventing groove 108 exists, so that the peeling is not performed. Stopped at 08.
- CMP chemical mechanical polishing
- Japanese Patent Application Laid-Open No. H10-3333533 discloses an integrated circuit using W or A1 wiring. After forming wiring, an interlayer insulating film is formed, and even if CMP is performed, the surface can be removed. He teaches that it cannot be completely flattened, and that it is necessary to keep the wiring spacing within a certain range, such as at most twice, in order to flatten the surface. By arranging dummy wirings not only in the chip area but also in the scribe area, it becomes possible to form an insulating layer having a flat surface over the entire surface of the wafer.
- FIG. 22B shows a configuration example of a semiconductor device disclosed in Japanese Patent Application Laid-Open No. H10-333533, in which dummy wirings are arranged over the entire chip area and the slave area.
- the pad / peripheral circuit area B is shown on the right, and the scribe area A is shown on the left.
- An element isolation region 103 is formed on the surface of the silicon substrate 101 by shallow trench isolation (STI).
- STI shallow trench isolation
- a gate insulating film and a gate electrode are formed, and a MOS transistor is formed.
- the wiring 106 is formed also on the element isolation region 103 with the same material as the gate electrode.
- An interlayer insulating film 109 is formed to cover the gate electrode.
- a wiring layer having a wiring 110 and a dummy wiring 111 is formed on the interlayer insulating film 109.
- the dummy wiring 111 is arranged not only in the pad / peripheral circuit area B but also in the slave area A.
- the wiring layers 110 and 111 are covered with an interlayer insulating film 112, and the surface is flattened.
- a wiring 114 and a dummy wiring 115 are formed on the interlayer insulating film 112, and are covered with the interlayer insulating film 116.
- the surface of the interlayer insulating film 1 16 is flattened, and the wiring 1 17 and the dummy wiring 1 18 are formed thereon, and are covered with the interlayer insulating film 1 19.
- Wirings 120 and dummy wirings 121 are formed on the interlayer insulating film 119, and are covered with the interlayer insulating film 122.
- An uppermost wiring layer including a pad 113 and a wiring 123 is formed on the interlayer insulating film 122, and is covered with a cover layer composed of an insulating layer 124 and a passivation layer 125.
- the surface of the node 113 is exposed by selectively etching the passivation layer 125 and the insulating layer 124.
- the scribe area has a configuration in which the uppermost wiring layer is covered with a cover layer.
- the density of wiring has increased, and it has become necessary to reduce the cross-sectional area.
- the resistance of the wiring increases due to the decrease in the cross-sectional area, the operation speed of the semiconductor integrated circuit device decreases.
- copper wiring has come to be used instead of aluminum wiring.
- the copper layer cannot be patterned with high precision by reactive ion etching (R I E) using a photoresist mask like the aluminum layer.
- Copper wiring is formed using a damascene process. That is, a groove-and-hole-shaped concave portion is formed in the insulating layer, the concave portion is filled with the copper layer, and an unnecessary copper layer on the insulating layer is removed by chemical mechanical polishing (CMP) to leave the wiring in the concave portion.
- CMP chemical mechanical polishing
- CMP conditions are set so as to polish a copper wiring layer. If the wiring density is uneven, polishing proceeds in a region where the wiring density is high, and erosion occurs in which the surface of the insulating layer is lowered. That is, a level difference occurs on the surface according to the wiring density. The level difference on the surface of the semiconductor wafer reduces the process margin as much as photolithography. Also, in the CMP of the wiring layer, the wiring layer on the concave portion becomes difficult to remove, and Cu Will result in residue.
- dummy wiring is arranged to make the wiring density uniform.
- the dummy wiring is a pattern formed of the same material as the wiring, but having no function as a wiring.
- Damaged wiring for preventing erosion in the CMP has no function of transmitting an electric signal, and is a pattern of the same material as the wiring formed to uniform the polishing rate of the CMP.
- the wiring is a dual damascene wiring, the dummy wiring does not need to have the same structure, and may have a single damascene structure.
- a dummy can be used to ensure the uniformity of the process.
- the dummy only needs to ensure the uniformity of the process, does not need to extend, and usually has a distributed pattern form so as not to inadvertently increase the parasitic capacitance of the wiring and limit the design freedom.
- the use of dummy wiring prevents erosion, planarizes the surface after CMP, and increases the process margin as much as photolithography.
- the remaining wiring layer in the subsequent damascene-type wiring forming step can also be prevented.
- the cover layer incorporates stress.
- the cover layer was removed in the entire dicing region to prevent the peeling of the cover layer (crack) and the progress of the crack inside the chip.
- An interlayer insulating film made of a low dielectric constant material is also weak in adhesion, and peeling is likely to occur at the interface of the interlayer insulating film below the cover layer. Disclosure of the invention
- An object of the present invention is to provide a method for manufacturing a semiconductor device capable of dicing a scribe region with a high yield.
- Another object of the present invention is to provide a method of manufacturing a semiconductor device in which a process margin limited by a dicing process is improved.
- Still another object of the present invention is to provide a semiconductor wafer and a semiconductor device which can be manufactured with a high process margin and a high yield.
- Another object of the present invention is to provide a method of manufacturing a semiconductor device, a semiconductor wafer, or a semiconductor device capable of suppressing an adverse effect due to the use of a dummy wiring and suppressing peeling of an insulating layer in a dicing process.
- a multilayer wiring structure in which an interlayer insulating film and a wiring layer formed above the semiconductor wafer are alternately stacked, and the wiring density of the wiring layer is low.
- a multi-layer wiring structure including a dummy wiring disposed in an appropriate region; a cover layer including a passivation layer formed so as to cover the multi-layer wiring structure; and a groove forming region surrounding each of the plurality of chip regions.
- a semiconductor wafer is provided which includes at least a groove formed through the passivation layer from above.
- the semiconductor device has a chip region in which a semiconductor element is formed, and a scribe region around the chip region, and a groove formation region is defined in the scribe region so as to surround each chip region.
- a multi-layered wiring structure in which a semiconductor substrate formed and an interlayer insulating film and a wiring layer formed above the semiconductor substrate are alternately stacked, wherein the dummy is disposed in a region where the wiring density of the wiring layer is low.
- a multi-layer wiring structure including wiring, a cover layer including a passivation layer formed over the multi-layer wiring structure, and a groove formed region formed at least through the passivation layer from above from above.
- a semiconductor device comprising: a groove;
- the wiring layers other than the uppermost wiring layer are preferably made of low-resistance copper wiring.
- the lower interlayer insulating film is preferably formed using a low dielectric constant material.
- FIG. 1 is a schematic plan view of a semiconductor wafer according to an embodiment of the present invention.
- FIGS. 2A to 2E are cross-sectional views illustrating main steps of a method for manufacturing a semiconductor device according to an embodiment of the present invention.
- 3A to 3I are cross-sectional views showing the process of forming the wiring of FIG. 2A in more detail.
- 4A and 4B are cross-sectional views showing main steps of a method for manufacturing a semiconductor device according to another embodiment of the present invention.
- FIG. 5 is a schematic plan view of a semiconductor wafer according to another embodiment of the present invention.
- 6A and 6B are cross-sectional views showing main steps of a method for manufacturing a semiconductor device according to the embodiment of FIG.
- FIG. 7A and 7B are cross-sectional views showing main steps of another method of manufacturing the semiconductor device according to the embodiment of FIG. 8A and 8B are cross-sectional views showing main steps of another method of manufacturing the semiconductor device according to the embodiment of FIG.
- FIG. 9 is a schematic plan view of a semiconductor wafer according to another embodiment of the present invention.
- 10A and 10B are cross-sectional views illustrating main steps of another method for manufacturing the semiconductor device according to the embodiment of FIG.
- FIG. 11 is a schematic plan view of a semiconductor wafer according to another embodiment of the present invention.
- 12A and 12B are cross-sectional views showing main steps of another method of manufacturing the semiconductor device according to the embodiment of FIG.
- FIG. 13 is a cross-sectional view schematically showing the configuration of the first embodiment of the semiconductor device having the 10-layer wiring.
- FIG. 14 is a sectional view schematically showing a configuration of a modification of the first embodiment of the semiconductor device having the 10-layer wiring.
- FIG. 15 is a cross-sectional view schematically showing a configuration of a second embodiment of the semiconductor device having the 10-layer wiring.
- FIG. 16 is a sectional view schematically showing a configuration of a modification of the second embodiment of the semiconductor device having the 10-layer wiring.
- FIG. 17 is a cross-sectional view schematically showing the configuration of the third embodiment of the semiconductor device having the 10-layer wiring.
- FIG. 18 is a sectional view schematically showing a configuration of a fourth embodiment of the semiconductor device having the 10-layer wiring.
- 19A to 19E are cross-sectional views schematically showing steps of forming a damascene wiring in the organic insulating layer shown in FIG.
- FIGS. 20A and 20B are photomicrographs of the upper surface of the wafer after dicing according to the configuration of FIG.
- 21A to 22D are schematic views showing a modification of the shape of the groove formed in the groove forming region.
- FIGS. 22A and 22B are schematic cross-sectional views showing a configuration of a separation preventing groove at the time of dicing a semiconductor chip and a configuration of a semiconductor device having a dummy wiring according to a conventional technique.
- FIG. 23 is a cross-sectional view showing the results of a study performed by the present inventors on the conventional technology.
- FIG. 24 is a cross-sectional view schematically showing the results of another study conducted by the present inventors.
- FIG. 25 is a schematic sectional view showing a phenomenon found by the present inventors. BEST MODE FOR CARRYING OUT THE INVENTION
- the dummy wiring is arranged also in the scribe area as in the configuration shown in FIG. 22B, it is easy to secure flatness over the entire surface of the wafer.
- a dummy wiring is formed, and is covered with a cover layer including the passivation layer 125.
- FIG. 23 is a cross-sectional view schematically showing the configuration of a semiconductor device actually used in the study conducted by the present inventors.
- a semiconductor element is formed on a semiconductor substrate 10 and covered with an insulating layer 21.
- a multilayer wiring was formed thereabove.
- the lamination of the multi-layer wiring insulating layer is performed by the interlayer insulating film IL1, the etch stopper / copper diffusion prevention layer ES2, the interlayer insulating film IL2, the etch stop / copper diffusion prevention layer ES3, the interlayer insulating film IL3, and the etch stopper.
- the first metal (copper) wiring layer Wl, the second metal (copper) wiring layer W2, and the third metal ( Copper) Wiring layer W3 was embedded.
- An uppermost wiring layer including an aluminum layer was formed on the third metal wiring layer W3 via a via portion.
- the uppermost wiring layer has no dummy wiring, part of which is a pad P, and other part of which forms a seal ring SR.
- the uppermost wiring layer is covered with a cover layer including the uppermost insulating layer IS and the passivation layer PS. An opening is formed through the passivation layer PS and the uppermost insulating layer IS to expose the upper surface of the pad P.
- the semiconductor wafer has a plurality of chip areas C1 and C2, and a scribe area SC is defined therebetween.
- Each chip C1, C2 is separated by dicing the area dc in the scribe area SC.
- the cover layer has a built-in stress, when dicing is performed in a state where the cover layer is present, peeling is likely to occur at the interface of the insulating layer due to the dicing impact.
- the uppermost insulating layer IS of one cover of the chip C1 is peeled off at the interface with the interlayer insulating film IL4 thereunder, and the peeling is directed to the inside of the chip.
- Peeling occurs not only at the interface of the cover layer but also at the interface of the interlayer insulating film below. Peeling does not stay around the chip, but easily penetrates into the circuit area. If the delamination reaches the inside of the chip, the chip becomes defective and reduces the yield. If a low dielectric constant (1 ow-k) material is used for the interlayer insulating film of the multilayer wiring, peeling is likely to occur at the interface.
- the passivation layer PS is formed of silicon nitride or silicon oxynitride, and has a built-in stress. Cutting the passivation layer in the dicing process is considered to cause stress to concentrate on the cut surface and cause peeling.
- the passivation layer PS in the scribe region it was examined to remove at least the passivation layer PS in the scribe region. If the passivation layer P S on the scribe area is removed, the distance between the cut surface and the passivation layer will be increased, and the stress at the cut section will be alleviated.
- the passivation film and the cover layer including the insulating layer thereunder are etched. By performing etching in the scribe region simultaneously with the etching of the pad opening, the cover layer including the passivation layer can be removed.
- FIG. 24 shows a state in which the force bar layer in the scribe area SC between the seal rings SR of the adjacent chips C1 and C2 was also etched in the bonding pad opening step of the semiconductor wafer having the configuration shown in FIG.
- FIG. 2 is a schematic cross-sectional view of a semiconductor wafer.
- the semiconductor wafer has the same configuration as that shown in Fig. 23.
- the passivation layer PS A photoresist pattern PR that opens the pad P and the scribe area SC is formed on the substrate.
- the passivation layer PS and the uppermost insulating layer IS are etched by dry etching using plasma to expose the pad P.
- the uppermost insulating layer IS is etched to expose the fourth interlayer insulating film IL4 therebelow, and at this time, overetching is performed, and the fourth interlayer insulating film below the uppermost insulating layer IS in the scribe region.
- the film IL4, the fourth etch stop layer ES4, and the third interlayer insulating film IL3 are also etched. Then, the dummy wiring buried in the third interlayer insulating film IL3 is exposed in the plasma and scatters with the etching of the insulating layer. Dust scattered in the plasma—wiring adheres to the surface of the semiconductor wafer and cannot be easily removed even with pure water cleaning.
- the inventor did not remove the cover layer over the entire scribe area, but formed a groove having a limited width that penetrates the cover layer so as to surround the chip area within the scribe area, and cut during dicing. It was found that peeling that entered from the surface was stopped near the groove.
- Figure 25 schematically illustrates this phenomenon.
- the configuration of the semiconductor device is the same as that of FIGS. 23 and 24, and has a multilayer wiring in which dummy wirings are arranged in a chip area C and a scribe area SC.
- the same phenomenon was found when the uppermost insulating layer I S was flattened and the force S indicates that it was flattened.
- the cover layers P S and I S are removed on the pad P to expose the pad, and are removed in a loop outside the scribe area S C surrounding the chip area C to form a groove G.
- the right side is cut by dicing, and when peeling occurs from the chip end, the layer above the peeling at the part outside the groove peels off as indicated by Z, and the peeling is stopped at the groove Was found. If a groove is formed deeper than the depth at which peeling can occur, it is natural that the peeling can be stopped at the groove. The peeling can also be stopped by forming a shallow groove.
- the reason why peeling at a deep position can be stopped at a shallow groove can be considered as follows, for example.
- the passivation layer PS has a built-in tensile stress and accumulates a stress that tends to spread inward at the outer inner wall portion Z1 of the groove G as shown by the arrow. Assuming that the outer side Z2 of the bottom surface of the groove G is the fulcrum, the inward stress at the point Z1 tends to push the layer below the fulcrum Z2 outward. When separation CL occurs and the bond between the layers above and below it disappears, the outward force concentrates on the layer above the separation. Therefore, fulcrum from the peeling CL Cleavage occurs toward Z2. When the stress is released by cleavage, the peeling stops.
- the dummy wiring By utilizing this phenomenon, it is possible to prevent the peeling toward the inside of the chip region while leaving the cover layer in the scribe region. Even when the dummy wiring is formed in the scribe region, the dummy wiring may be prevented from being scattered when the groove having the limited width is formed.
- the grooves need to be at least deeper than the passivation layer and, more practically, deeper than the cover layer, and need not reach the depth at which delamination can occur.
- FIG. 1 schematically shows an example of a planar configuration of a scribe region of a semiconductor wafer according to an embodiment of the present invention.
- 2A to 2E are cross-sectional views taken along a dashed line II-II of FIG. 1 showing main steps of a method of manufacturing a semiconductor device in which the semiconductor wafer shown in FIG. 1 is formed and diced into semiconductor chips.
- FIG. 1 schematically shows an example of a planar configuration of a scribe region of a semiconductor wafer according to an embodiment of the present invention.
- 2A to 2E are cross-sectional views taken along a dashed line II-II of FIG. 1 showing main steps of a method of manufacturing a semiconductor device in which the semiconductor wafer shown in FIG. 1 is formed and diced into semiconductor chips.
- FIG. 1 schematically shows an example of a planar configuration of a scribe region of a semiconductor wafer according to an embodiment of the present invention.
- 2A to 2E are cross-sectional views taken along a dashed line
- Chip areas C1 to C4 are defined at four corners in FIG.
- the chip regions C1 to C4 are regions for forming a semiconductor integrated circuit structure having a multilayer wiring therein.
- Pads P are arranged around the chip area.
- Seal rings S R1 to S R4 for preventing intrusion of moisture and the like are formed so as to surround the outer peripheries of the chip regions C 1 to C 4.
- the area outside the seal rings SR1 to SR4 is the scribe area SC.
- Dummy wires DW are also arranged in the scribe area SC.
- a region having a certain width on both sides of the center line CC of the scribe region is a dicing region DC, and dicing for cutting the semiconductor wafer is performed in the dicing region DC.
- a groove forming area GR having a limited width for forming a groove penetrating the passivation layer is defined so as to surround each chip area C.
- no dummy wiring DW is arranged in the groove forming region GR.
- the width of the groove forming region is desirably 1 to 3 times or less the width of the scribe region in order to suppress the deterioration of the flatness due to the absence of the dummy wiring.
- the groove forming region GR at least the grooves G1 to G4 penetrating through the passivation layer are etched simultaneously with the step of etching the pad window opening.
- the width of groove G is 0.5 ⁇ ! Desirably, it is in the range of ⁇ 10 ⁇ m. If the width of the groove is too narrow, etch May be insufficient or stress may not be released sufficiently. If the width is set too large, the width of the dicing region is limited, which may cause a shortage in securing flatness.
- a groove G is formed in the groove forming area GR outside the dicing area DC, dicing is performed in the dicing area DC, and a passivation layer remains between the chip end after dicing and the groove G. .
- the width of the scribe area SC is 126 ⁇ m, 54 ⁇ from the center line CC of the dicing area DC!
- the range of ⁇ 6 1 mu m and the groove forming region GR, a groove G 1-G 4 a passivation layer and the insulating layer thereunder in the region of 5 5 ⁇ m ⁇ 6 0 ⁇ m from the center one line CC are etched Form. Dicing is performed in an area of 40 to 50 ⁇ m in width from the center line CC.
- the width of the groove forming region is larger by 1 ⁇ on one side than the width of the groove is due to a mask alignment error. If the mask alignment accuracy is high, this margin can be reduced. It may be preferable to set the margin width to about 0 ⁇ l to 5 im according to the mask alignment accuracy. Dummy wirings DW are arranged on both sides of the groove forming region.
- the grooves separate at least the passivation layers that contain the stress, reduce the thickness of the insulation stack, and locally weaken the strength of the insulation stack.
- a passivation layer having a built-in stress is left, cracks may occur from the side surface of the dicing during dicing, and peeling may occur between insulating layers. If the separation is above the bottom of the groove, the separation naturally ends at the groove.
- the insulating layer is cleaved from the separation surface to the groove above and the stress is released. It would also be possible that the stress accumulated in the passivation layer and the locally weakened strength would cause the insulation stack above the release surface to yield. From this point of view, the groove has the function of promoting the release of stress.
- the seal ring SR has a flat shape with the corners dropped, and the groove forming area and the grooves have a flat shape with the corners dropped accordingly. Is preferred. In this case, the above numerical range does not hold at the corner. Since dicing is performed in two directions that are almost orthogonal to each other, dicing is affected twice at the corners of the chip. If the corners are almost perpendicular, two impacts may cause peeling from the corners to the inside of the circuit area due to the concentration of stress even if grooves are provided. By forming the groove in a planar shape with the corners dropped, stress concentration can be avoided, and peeling can be more effectively blocked.
- the silicon substrate 10 shown in FIG. 2A defines a scribe area SC and chip areas C3 and C4 on both sides thereof.
- a dicing area DC is defined in the scribe area SC, and a groove forming area GR is defined on both sides thereof.
- a scribe area in which a dummy wiring is disposed outside the groove forming area GR is shown. However, when the flatness requirement is low, the groove forming area GR may reach the outer periphery of the scribe area.
- an insulating layer 21 such as a silicon oxide film.
- an etch stop layer ES 1 having an oxygen shielding function and a copper diffusion preventing function is formed on the insulating layer 21, and an interlayer insulating film IL 1 is formed thereon.
- a wiring groove and a via hole are formed in the interlayer insulating film I L1 and the etch stop layer E S1, and a first wiring layer including the first wiring W l and the dummy wiring D W1 is formed by a damascene process. The process of forming the damascene wiring will be described later.
- an etch stopper layer ES2 having a copper diffusion preventing function is formed to cover the first wiring layer, and an interlayer insulating film IL2 is formed thereon.
- a damascene recess is formed, and a second wiring layer including the second wiring W 2 and the second dummy wiring D W 2 is buried.
- a third etch stopper layer ES and a third interlayer insulating film IL3 are formed, a damascene recess is formed, and the third wiring layer including the third wiring W3 and the third dummy single wiring DW3 is buried.
- 3A to 3F are cross-sectional views illustrating an example of a dual damascene process.
- an element isolation region 11 by STI is formed on the surface of a silicon substrate 10 to define an active region.
- a gate insulating film 12 is formed on the surface of the active region by thermal oxidation, and a gate electrode 13 made of a polycrystalline silicon layer or a polysilicon layer is formed thereon.
- a source Z drain region 15 is formed on both sides of the gate electrode 13 to obtain a MOS transistor structure.
- Covering the gate electrode 13, a silicon nitride layer 2 1 a, The insulating layer 21 is formed by stacking the silicon oxide layers 21b.
- a conductive plug 17 such as W is formed to penetrate the insulating layer 21 and reach the electrode of the MOS transistor.
- the conductive plug 17 and the insulating layer 21 are covered to form a stack of an etching stopper layer 22 such as silicon nitride having an oxygen shielding function and an interlayer insulating film 23 such as silicon oxide.
- a photoresist mask is formed on the stack, and the wiring layer pattern is opened.
- a required portion of the insulating layer 23 and the etching stopper layer 22 is removed to form a wiring groove, and a barrier metal layer 24 that can block copper diffusion and a seed metal (copper) layer for plating are formed by sputtering.
- a copper layer 25 is deposited thereon by plating.
- An unnecessary metal layer on the insulating layer 23 is removed to form a lower wiring layer.
- the silicon nitride layer 31 is 50 nm thick, the silicon oxide layer 32 is 300 nm thick, and the silicon nitride layer is plasma-enhanced chemical vapor deposition (PE-CVD) to cover the underlying wiring layer.
- the layer 33 is formed to a thickness of 30 nm, the silicon oxide layer 34 is formed to a thickness of 300 nm, and the silicon nitride layer 35 serving as an antireflection film is formed to a thickness of 50 nm.
- the intermediate silicon nitride layer 33 functions as an etch stop when etching the wiring pattern.
- a dual damascene process can be performed without an intermediate etch stopper layer.
- a resist layer is coated on the anti-reflection silicon nitride layer 35 and exposed and developed to form a resist pattern PR 1 having an opening corresponding to the via hole.
- the resist pattern PR 1 as a mask, the anti-reflection silicon nitride layer 35, the silicon oxide layer 34, the silicon nitride layer 33, and the silicon oxide layer 32 are etched. Thereafter, the resist pattern PR1 is removed.
- a resin having the same composition as that of the resist and having no photosensitivity is embedded in the formed via hole, and is etched back by oxygen plasma to have a predetermined height.
- the height is set to almost the middle between the upper silicon oxide layer 34 and the lower silicon oxide layer 32.
- a resist pattern PR2 having an opening corresponding to the wiring groove is formed on the antireflection silicon nitride layer 35.
- the silicon nitride layer 35 and the silicon oxide layer 34 are etched. In this etching, the silicon nitride layer 33 functions as an etch stop.
- the inside of the via hole formed earlier is protected by resin filling 37.
- the resist pattern PR 2 and the filling 37 of the organic resin are removed by performing the etching with plasma of O 2 and CF 4 .
- the silicon nitride layer 33 exposed at the bottom of the wiring trench and the silicon nitride layer 31 exposed at the bottom of the via hole are etched.
- the surface of the lower wiring is exposed.
- a pre-treatment such as Ar sputtering, H 2 plasma, annealing in an H 2 atmosphere is performed, and the exposed surface of the lower wiring layer is reduced to remove a natural oxide film (including chemical oxide) that may be present. May be.
- a Ta layer 38a is formed to a thickness of 25 ⁇ m by sputtering, and a seed Cu layer is formed to a thickness of 100 nm by sputtering.
- a Cu layer is formed on the seed layer by electrolytic plating to obtain a sufficiently thick Cu layer 38b.
- the metal layer on the surface of the silicon nitride layer 35 is removed by chemical mechanical polishing (CMP), and the Cu wiring consisting of the && layer 38 & and the Cu layer 38b is formed.
- CMP chemical mechanical polishing
- an etch stopper layer ES4 and a fourth interlayer insulating film IL4 are formed on the third wiring layer W3, and a via hole TV is formed to bury the via conductor TV.
- a via hole TV is formed to bury the via conductor TV.
- an aluminum uppermost wiring layer connected to the via conductor is formed and patterned to form a pad P and a seal ring SR. Due to weak flatness requirements, it is not necessary to arrange a dummy wiring in the uppermost aluminum wiring layer.
- 3F to 3I schematically show a manufacturing process of the uppermost wiring layer.
- an etch stop layer ES4 formed of a silicon nitride layer having a thickness of 70 nm by PE-CVD, and a silicon oxide layer having a thickness of 600 nm are formed on the third copper wiring W3.
- a fourth interlayer insulating film IL4 formed of a recon layer is formed.
- a resist pattern PR3 having an opening of a via pattern is formed, and the fourth interlayer insulating film IL4 having a thickness of 600 nm is etched.
- the etch stopper layer ES4 functions as a stopper in this etching.
- the resist pattern PR3 is removed by assing.
- FIG. 3G using the fourth interlayer insulating film IL4 in which the via hole is formed as a mask, the underlying silicon nitride etch stopper layer ES4 is etched. The surface of the lower wiring W3 is exposed.
- a TiN layer 39a having a thickness of 50 ⁇ is formed by sputtering or the like.
- a W layer 39b having a thickness of 300 nm is formed by CVD to fill the via hole.
- the W layer 39b and the TiN layer 39a on the surface of the interlayer insulating film IL4 are removed by CMP. A via conductor embedded in the via hole is obtained.
- a 40 nm thick Ti layer 40 a, a 30 nm thick TiN layer 40 b, a 1 ⁇ A1 layer 40 c, and a 50 nm thick TiN layer Layer 40d is laminated by sputtering.
- a resist pattern is formed on the laminated aluminum wiring layer, and an uppermost wiring pattern having a desired shape is formed by performing etching.
- the uppermost wiring layer is made of aluminum wiring, the surface of the pad becomes aluminum, which is suitable for wire bonding or the like.
- a high-density plasma (HDP) silicon oxide layer IS with a thickness of 1400 nm and a silicon nitride layer PS with a thickness of 500 nm are formed thereon as a cover layer. Is formed.
- the silicon nitride layer will have a passivation of 3 mm with moisture resistance.
- a resist layer PR4 is applied on the passivation layer pS, and is exposed and developed to open a window PW on the pad and a window GW for opening a groove.
- the passivation layer PS and the insulating layer IS are etched, and the TiN layer on the pad surface is also etched. The pad with the aluminum surface is exposed.
- the fourth interlayer insulating film IL4 is etched, but the underlying second wiring layer is not exposed. You.
- FIG. 2C shows a state in which the resist pattern PR 4 has been removed after the completion of the etching.
- the TIN layer on the surface is removed, and a groove G having a shape surrounding each chip region is formed outside the dicing region D in the pad P and the scribe region SC where the aluminum surface is exposed. Since the dummy wiring is not arranged in the wiring layer which can be etched at least in the groove forming region, the dummy wiring does not scatter by the etching of the groove G. By dicing the region dc in the dicing region DC, each chip is separated.
- dicing is performed to cut the area dc of the dicing area DC ⁇ over the entire thickness of the wafer, and each chip is separated.
- peeling between the insulating layers may occur from the side surface of the cut portion, but the peeling is prevented from entering the circuit region.
- the wiring layer in which the dummy wiring is not arranged in the groove forming region can be limited to the uppermost wiring layer and the wiring layer in the vicinity thereof. Even in the wiring layer where the dummy wiring is not arranged in the groove formation area, the width of the groove formation area is limited, so by arranging dummy wiring in other areas, deterioration of flatness is limited to a negligible range. It is possible to do.
- All wiring layers can be formed of copper wiring. In this case, it is preferable to arrange a dummy wiring also in the uppermost wiring layer.
- 4A and 4B show an embodiment in which an aluminum wiring layer is not formed.
- a silicon nitride layer 43 having a thickness of 50 nm, a PE-CVD silicon oxide layer IS having a thickness of 400 nm, and a silicon nitride layer PS having a thickness of 500 nm are formed.
- a resist pattern PR5 having a pad window PW and a stress release groove window GW is formed on the passivation layer PS of the silicon nitride layer.
- the passivation layer PS and the insulating layer IS are etched. After that, the resist pattern PR5 is removed.
- the silicon nitride layer 43 is etched.
- the pad P of the third wiring layer is exposed.
- the third interlayer insulating film IL3 for the third wiring layer is etched by single bar etching. If the dummy wiring is arranged in the region to be etched, the dummy wiring will be scattered. By not arranging the dummy wiring in the groove forming region to a depth that can be etched, the dummy wiring does not scatter.
- the formation of the dummy wiring is restricted and the opening for the pad and the formation of the groove are performed simultaneously.
- the selective etching and the control etching can be performed to prevent the dummy wiring from scattering.
- the groove may be etched by another etching step different from the pad opening. In these cases, dummy wirings can be arranged on the entire scribe region, including under the grooves.
- FIG. 5 shows a plan view of a semiconductor wafer according to another embodiment of the present invention.
- the dummy wirings DW are arranged in the entire scribe area SC.
- the grooves G1 to G4 have a bottom surface at a higher level than the dummy wiring GW. Therefore, even if the grooves G1 to G4 and the dummy wiring GW overlap, the dummy wiring DW does not scatter.
- 6A to 6B, 7A to 7B, and 8A to 8B are cross-sectional views schematically showing three types of manufacturing methods for realizing the configuration of FIG. .
- FIG. 6A is a process corresponding to FIG. 2A, but a dummy wiring DW is also arranged below the groove forming region GR.
- a resist pattern having windows for pad openings and grooves is formed (as shown in FIG. 2B), and etching of the passivation layer PS and the uppermost insulating layer IS is performed.
- the passivation layer PS and the uppermost insulating layer IS on the pad P are etched, the passivation layer PS and the uppermost insulating layer IS are almost also etched in the groove G.
- the underlying fourth interlayer insulating film IL 4 is etched.
- FIG. 6B shows a state in which the photoresist pattern on the passivation PS has been removed.
- the pad P is opened, and the groove G extends from the surface of the passivation layer PS to the surface of the fourth etching stopper layer ES 4 through the uppermost insulating layer IS, the fourth interlayer insulating film IL 4, and the fourth etching. Most of the stopper layer ES 4 remains, and the dummy wiring DW 3 is not exposed.
- Such selectivity of a certain etching gas may be, for example, after a silicon nitride layer of the passivation layer PS was removed by etching using CF 4 as a main etching gas, an etching gas mixed with CHF 3 to CF 4 .
- an etching gas mixed with CHF 3 to CF 4 By increasing the mixing ratio, the etching rate of the silicon nitride layer with respect to the silicon oxide layer can be set lower.
- FIG. 7A-7B schematically show another manufacturing method for realizing the configuration of FIG.
- a photoresist pattern PR4 that opens a pad and a groove is formed on the passivation layer PS, and the passivation PS and the uppermost insulating layer IS are etched.
- Passivation layer PS has almost the same thickness in all areas Therefore, the etching is completed almost simultaneously on the pad P and the groove G.
- the uppermost insulating layer IS is etched, the uppermost insulating layer IS on the pad P is thin, so that the etching on the pad P ends when the uppermost insulating layer IS still remains under the groove G.
- the groove G can be kept in the uppermost insulating layer even if overetching is performed.
- the over-etching may be performed more often to etch the uppermost insulating layer IS and the fourth interlayer insulating film IL4 thereunder.
- the etching gas may be an etching gas having high selectivity, and may have an etching selectivity to silicon oxide and silicon nitride. The effect can be expected as long as the groove G penetrates at least the passivation layer PS.
- the etching performed after forming the passivation layer PS is not limited to the etching for opening the pad. If there is an etching step independent of the pad opening, the groove can be formed by using another etching step. An etching step for forming a groove may be provided.
- FIG. 8A shows the etching process for pad opening.
- a photoresist pattern PR6 having an opening on the pad is formed.
- the passivation layer PS and the uppermost insulating layer IS on the node are etched.
- the photoresist pattern PR 6 is removed.
- a photoresist pattern PR 7 is formed.
- a groove forming window GW is opened above the groove.
- etching of at least the passivation layer PS is performed in the opening GW. Since the pad P is already opened, this etching can be performed under conditions independent of the conditions of the pad opening.
- the grooves G1 to G4 can be selectively formed in the scribe area even if the dummy wiring is arranged on the entire scribe area SC.
- FIG. 9 shows a case where no dummy wiring is arranged in the uppermost copper wiring layer in the scribe area SC. A dummy wiring may be arranged in each chip area inside the seal ring S.
- 10A and 10B are cross-sectional views taken along a dashed line X-X in FIG.
- FIG. 10A is a cross section corresponding to FIG. 2A.
- the dummy wiring DW 3 in the chip is formed together with the wiring W 3, but the dummy wiring is formed in the scribe area SC. Is not formed.
- the other points are the same as in FIG. 2A.
- an etching step similar to the etching step shown in FIG. 2B is performed to open the pad.
- FIG. 10B shows a state in which etching for pad opening has been completed and the photoresist pattern has been removed.
- the uppermost wiring layer I S and the passivation layer P S are etched, and the pad surface is exposed.
- the groove G penetrates the passivation layer PS, penetrates the uppermost insulating layer IS, the fourth interlayer insulating film IL4, the fourth etching stopper layer ES4, and further reaches the third interlayer insulating film IL3.
- the dummy wiring of the third wiring layer is not arranged in the scribe region, the dummy G does not scatter the dummy wiring. Necessary flatness can be ensured because dummy wirings are arranged in the chip area. Deterioration of flatness due to omission of the third wiring in the scribe area can be minimized. If not much flatness is required in the chip region, the dummy wiring of the third wiring layer may be omitted in the chip region.
- grooves surrounding each chip area were formed on both sides of the scribe area SC. That is, two grooves are formed in the scribe area.
- the number of grooves is not limited to two.
- the passivation layer in the region to be diced may be removed. Removing the passivation layer in the area to be diced simplifies dicing.
- FIG. 11 is a plan view showing another embodiment in which three grooves are formed in a scribe region.
- a relatively wide groove CG is formed along the center and center line of the scribe area SC. It is preferable that the central groove CG be accommodated in a region dc to be actually diced.
- the other points are the same as the configuration of FIG.
- FIGS. 12A and 12B are cross-sectional views along the dashed line X X- ⁇ in FIG.
- a photoresist pattern PR 8 is formed on a semiconductor wafer having a configuration similar to the configuration shown in FIG. 2A.
- the photoresist pattern PR 8 has a pad window PW for opening a pad, a groove window GW for opening a groove, and a window CW for a central groove in an area DC to be diced as in the above-described embodiment. It has.
- the photoresist pattern PR8 as an etching mask, the insulating layer including the passivation layer PS and the uppermost insulating layer IS is etched. This etching itself can be performed in the same manner as in the above embodiment. For example, the etching is terminated by selective etching using a silicon nitride film as an etching stopper.
- FIG. 12B is a cross-sectional view showing a state where the photoresist pattern PR 8 has been removed.
- the point that the pad P is opened and the groove G is formed is the same as in the above-described embodiment, and the central groove CG is etched in the area to be scribed.
- the dicing step for dicing the region dc is simplified.
- the state after dicing is the same as that of the above-described embodiment, and the same effects as those of the above-described embodiment can be expected.
- an element isolation region 11 formed by shallow trench isolation (STI) is formed on the surface of the silicon substrate 10, and a transistor is formed in the active region defined by the element isolation region 11.
- the transistor structure is formed to include a gate insulating film 12 on a channel region, a gate electrode 13 of polycrystalline silicon on the gate insulating film, a source / drain region 15 and the like.
- An insulating layer 21 made of silicon oxide or the like covering the gate electrode is formed, and a conductor plug reaching the source / drain region etc. 17 is formed by W or the like.
- an etch stopper layer ES 1 having an oxygen shielding function and a first interlayer insulating film IL 1 are formed, and a first wiring layer forming recess is formed in the first interlayer insulating film IL 1 and the etch stopper layer ES 1. Is formed, and the first wiring layer W1 made of copper wiring is buried.
- a second etch stopper layer ES2 and a second interlayer insulating film IL2 are formed, and the second copper wiring layer W2 is embedded.
- an etch stop layer ES3 and an interlayer insulating film IL3 are formed, and the third wiring layer W3 is embedded.
- an etch stop layer ES4 and an interlayer insulating film IL4 are formed, and the fourth wiring layer W4 is embedded.
- an interlayer insulating film that houses the first to fourth wiring layers is formed of an organic insulating layer such as a SILK.
- 19A to 19E show an example of a dual damascene process for forming a damascene wiring in an organic insulating layer.
- the copper diffusion preventing layer is formed of SiN or SiC, and also has a function of an etch stopper and oxygen shielding. For example, a 30 nm thick SiC layer 51 is formed.
- S i C layer 51 S i LK is spin-coated, and cured at 400 ° C. for 30 minutes to form a 450 nm thick S i LK layer 52.
- a 3iC layer 53 with a thickness of 5011111 is formed by PE_C VD, and a silicon oxide layer 54 having a thickness of 100 nm is further formed thereon by PE-C VD. Film.
- a resist pattern PR1 having an opening for a wiring trench is formed on the silicon oxide layer 54, and the silicon oxide layer 54 is etched. The pattern for the wiring trench is transferred to the silicon oxide layer 54. Thereafter, the resist pattern PR1 is removed by asking.
- a resist pattern PR2 having a via hole opening is formed.
- the SiC layer 53 is etched.
- etching is performed using oxygen-containing plasma to assemble the resist pattern PR2 and etch the SiLK layer 52 halfway.
- the resist pattern PR 2 disappears.
- the silicon oxide layer 54 is The exposed S i C layer 53 is etched.
- the silicon oxide layer 54 and the SiC layer 53 constitute a hard mask.
- the SiLK layer 52 is etched. In this etching, the SiLK layer 52 at the bottom of the via hole is also etched, exposing the SiC layer 51. For example, the SiLK layer 52 is etched to a depth of 200 nm as a wiring trench. Next, the SiC layer 51 exposed at the bottom of the via hole is etched to expose the surface of the lower wiring.
- a Ta layer 57a having a thickness of 25 nm is formed by sputtering, and a Cu layer for seed is formed thereon by sputtering with a thickness of about 100 nm.
- a pre-treatment may be performed with Ar sputter H 2 plasma, annealing in an H 2 atmosphere or the like to remove the natural oxide film on the surface of the underlying copper wiring layer 50.
- a Cu layer is formed on the seed Cu layer by electrolytic plating. The Cu layer is buried in the wiring groove. Thereafter, CMP is performed to remove an excess metal layer on the surface of the silicon oxide layer 54. Note that the silicon oxide layer 54 may disappear by CMP.
- an etch stopper E S5 an interlayer insulating film I L5 are formed, wiring trenches and via holes are formed, and the wiring layer W5 is buried.
- a sixth wiring structure including the etch stop layer ES 6, the interlayer insulating film IL 6, and the wiring layer W 6 is formed thereon, and the etch stop layer ES 7, the interlayer insulating film IL 7, and the wiring layer W 7 are formed thereon.
- the seventh wiring structure is formed, and an eighth wiring layer is formed by the etch stopper layer ES8, the interlayer insulating film IL8, and the wiring layer W8.
- the inter-layer insulating films I L5 to I L8 accommodating the fifth to eighth wiring layers are formed of Si OC.
- a ninth wiring structure is formed on the eighth wiring layer by the etch stop layer ES 9, the interlayer insulating film IL 9, and the wiring layer W 9, and the etch stop layer ES 10 and the interlayer insulating film IL 10 are formed thereon. Then, a 10th wiring structure is formed by the wiring layer W10.
- the interlayer insulating films IL9 and IL10 containing the ninth wiring layer and the 10th wiring layer are formed of a non-doped silicon oxide layer (USG).
- An etch stopper layer ES 11 and an interlayer insulating film IL 11 are formed on the 10th wiring layer, and a via conductor TV similar to the above-described embodiment is formed. Then pad P on the surface
- the aluminum wiring layer constituting the uppermost layer of the seal ring SR is formed in the same manner as in the above-described embodiment.
- an insulating layer IS is formed with silicon oxide or the like, and after flattening, a passivation layer PS of silicon nitride or silicon nitride oxide is formed thereon in the same manner as in the above embodiment.
- a photoresist layer PR 10 is formed on the passivation layer PS, and an opening is formed on the pad P and the groove. Etching of the passivation layer PS and the uppermost insulating layer IS is performed using the photoresist pattern PR 10 as a mask. In the region on the pad, the passivation layer PS and the insulating layer IS are etched to form a pad window. In the trench G, by performing selective etching or control etching, the trench G reaching the first interlayer insulating film IL 11 is etched simultaneously with the etching for forming the pad window.
- the etching stopper layer ES11 remains without being etched, and the dummy wiring does not scatter.
- FIG. 15 shows a configuration in which no dummy wiring is formed in the uppermost copper wiring layer in the dicing region.
- the dummy wiring of the 10th wiring layer W10 is not formed.
- the groove G penetrates into the first interlayer insulating layer ILG, but no dummy wiring is formed in the first wiring layer, thereby preventing the dummy wiring from scattering.
- No dummy wiring is formed in the scribing area of the 10th wiring layer, but the number of wiring layers thereabove is small, and the adverse effect of not forming the dummy wiring layer is minimized.
- FIG. 16 shows an example of a configuration in which etching of pad opening and groove formation is performed in separate steps. Since the etching for forming the groove G is performed independently of the etching for opening the pad P, the etching condition for forming the groove G can be selected independently of the etching for opening the pad P. Therefore, by selecting the etching condition for etching the groove G, it is possible to prevent the dummy wiring in the wiring layer from scattering.
- FIG. 17 shows a configuration in which the opening of the pad P and the etching of the groove G are simultaneously performed, but the dummy wiring is not formed in a region where the etching for forming the groove G can be performed.
- the dummy wiring of the 10th wiring layer W10 is located in the groove forming region. Not created. Therefore, even if the groove G progresses into the first interlayer insulating layer IL10, the dummy wiring is not formed there, so that the dummy wiring can be prevented from being scattered by the etching.
- FIG. 18 shows a configuration in a case where a central groove CG is formed in a region to be diced together with grooves G on both sides in a scribe region. Dicing is simplified by forming a groove CG in the center of the area to be diced. Since dicing is performed in an area wider than the central groove CG, the same effect as in the other embodiments can be expected in the configuration after dicing.
- FIG. 2OA is a microscopic photograph of the top surface of the sample having the configuration shown in FIG. 17 in a diced state.
- the central black area d c is the area where the wafer has been removed by dicing.
- a thin groove G can be seen above the dicing area through a white area.
- the lower part Z from the position corresponding to the groove has disappeared. It is considered that peeling occurred from the diced area, reached the groove, cracks ran upward, and the surface layer disappeared.
- the black streak visible above the groove is the moisture-resistant seal ring SR.
- a large rectangular area further above is a pad P.
- the first to fourth interlayer insulating films were formed of organic insulating layers.
- the organic insulating layer has the lowest dielectric constant and can reduce the parasitic capacitance of the wiring.
- From the fifth interlayer insulating film to the eighth interlayer insulating film I L5 to I L8 were formed of SiOC layers.
- the SiOC layer has a higher dielectric constant than the organic insulating layer, but has a lower dielectric constant than silicon oxide, and can reduce wiring parasitic capacitance.
- the ninth interlayer insulating film and the 10th interlayer insulating film I L9 and I L10 were formed of a silicon oxide layer.
- the silicon oxide layer has a higher dielectric constant than the organic insulating layer and SiOC, but is a very stable insulator and has high reliability.
- Samples were also prepared in which the interlayer insulating films of the first to fourth wiring layers were changed from organic insulating layers to SiOC.
- FIG. 20B shows a micrograph of the upper surface of this sample.
- the lower black part dc is the area where the wafer has disappeared due to dicing. Groove at a certain distance from the lower end G is formed, and further above the seal ring SR is formed. In the right area, the surface part disappears from the diced side to the groove. It is probable that peeling occurred from the diced side surface and penetrated to the lower part of the groove, where a crack occurred above and the surface layer disappeared. As described above, by actively releasing the stress using the groove, the peeling can be prevented from entering the inside of the chip.
- the shape of the groove is not limited to that described above, but may be various.
- FIG. 21A shows a shape in which an auxiliary groove GS is formed inside a corner of a groove GM similar to the above-described embodiment. The penetration of peeling at the corners can be more reliably blocked.
- FIG. 21B shows a shape in which a loop-shaped auxiliary groove GS is further formed inside the above-described groove GM. In the entire circumference, the penetration of peeling can be more reliably blocked.
- FIG. 21C shows the deformation of the corner drop. Instead of cutting off the corners of the rectangle with one straight line, the shape is cut off with three straight lines. The number of straight lines may be plural, and is not limited to three.
- FIG. 21D shows a shape with no corners dropped. Although the resistance to the invasion of peeling is weakened, the corners need not be dropped if this is sufficient.
- FIG. 21E shows a shape in which the chip area is surrounded by four grooves LGM1 to LGM4. Grooves L GM1 to GM4 are not continuous grooves but azimuthally surround the chip area.
- It can be used for a semiconductor device having a multilayer wiring.
- it is effective for a method of manufacturing a semiconductor device in which an extra metal layer is removed by CMP using copper wiring.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2005505818A JP4580867B2 (ja) | 2003-04-30 | 2004-01-23 | 半導体装置の製造方法、半導体ウエハおよび半導体装置 |
US11/200,126 US8513776B2 (en) | 2003-04-30 | 2005-08-10 | Semiconductor device and method capable of scribing chips with high yield |
US13/922,244 US9105706B2 (en) | 2003-04-30 | 2013-06-20 | Semiconductor device fabrication method capable of scribing chips with high yield |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JPPCT/JP03/05514 | 2003-04-30 | ||
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US11/200,126 Continuation US8513776B2 (en) | 2003-04-30 | 2005-08-10 | Semiconductor device and method capable of scribing chips with high yield |
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Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007500944A (ja) * | 2003-07-28 | 2007-01-18 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Icチップ用のクラック・ストップおよびそれを形成するための方法(低k誘電体用のクラック・ストップ) |
JP2006140404A (ja) * | 2004-11-15 | 2006-06-01 | Renesas Technology Corp | 半導体装置 |
JP2006179542A (ja) * | 2004-12-21 | 2006-07-06 | Renesas Technology Corp | 半導体装置 |
JP2006261514A (ja) * | 2005-03-18 | 2006-09-28 | Nec Electronics Corp | 半導体チップおよびその製造方法 |
CN100407403C (zh) * | 2005-06-28 | 2008-07-30 | 联华电子股份有限公司 | 半导体晶片 |
CN101937916B (zh) * | 2005-11-30 | 2012-07-25 | 瑞萨电子株式会社 | 半导体设备 |
JP2007173325A (ja) * | 2005-12-19 | 2007-07-05 | Mitsumi Electric Co Ltd | 半導体装置の製造方法 |
JP2008047741A (ja) * | 2006-08-18 | 2008-02-28 | Fujitsu Ltd | 回路基板及び半導体装置 |
JP2008098605A (ja) * | 2006-09-15 | 2008-04-24 | Nec Electronics Corp | 半導体装置 |
JP2008124070A (ja) * | 2006-11-08 | 2008-05-29 | Rohm Co Ltd | 半導体装置 |
US8211718B2 (en) | 2007-03-01 | 2012-07-03 | Renesas Electronics Corporation | Semiconductor device and method of visual inspection and apparatus for visual inspection |
JP2008218565A (ja) * | 2007-03-01 | 2008-09-18 | Nec Electronics Corp | 半導体装置、ならびに外観検査方法および外観検査装置 |
US8344484B2 (en) | 2009-12-24 | 2013-01-01 | Elpida Memory, Inc. | Semiconductor device |
JP2011233746A (ja) * | 2010-04-28 | 2011-11-17 | Renesas Electronics Corp | 半導体装置およびその製造方法 |
WO2012095907A1 (ja) * | 2011-01-14 | 2012-07-19 | パナソニック株式会社 | 半導体装置及びフリップチップ実装品 |
JP2012070004A (ja) * | 2011-12-21 | 2012-04-05 | Mitsumi Electric Co Ltd | 半導体装置の製造方法 |
JP2014090008A (ja) * | 2012-10-29 | 2014-05-15 | Fujitsu Semiconductor Ltd | 半導体装置及びその製造方法 |
JP2014165403A (ja) * | 2013-02-26 | 2014-09-08 | Renesas Electronics Corp | 半導体装置および半導体ウェハ |
JP2015050383A (ja) * | 2013-09-03 | 2015-03-16 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP2014033228A (ja) * | 2013-11-01 | 2014-02-20 | Renesas Electronics Corp | 半導体装置 |
JP2016004919A (ja) * | 2014-06-17 | 2016-01-12 | キヤノン株式会社 | 半導体装置の製造方法および構造体 |
JP2016092367A (ja) * | 2014-11-11 | 2016-05-23 | キヤノン株式会社 | 半導体装置及びその製造方法、ならびにカメラ |
JP2018006443A (ja) * | 2016-06-29 | 2018-01-11 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
Also Published As
Publication number | Publication date |
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US8513776B2 (en) | 2013-08-20 |
KR100690493B1 (ko) | 2007-03-09 |
JPWO2004097917A1 (ja) | 2006-07-13 |
US9105706B2 (en) | 2015-08-11 |
CN100385627C (zh) | 2008-04-30 |
US20050269702A1 (en) | 2005-12-08 |
JP4580867B2 (ja) | 2010-11-17 |
KR20050050114A (ko) | 2005-05-27 |
US20130280889A1 (en) | 2013-10-24 |
CN1701418A (zh) | 2005-11-23 |
WO2004097916A1 (ja) | 2004-11-11 |
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