WO2003044862A1 - Semiconductor device - Google Patents
Semiconductor device Download PDFInfo
- Publication number
- WO2003044862A1 WO2003044862A1 PCT/JP2002/012029 JP0212029W WO03044862A1 WO 2003044862 A1 WO2003044862 A1 WO 2003044862A1 JP 0212029 W JP0212029 W JP 0212029W WO 03044862 A1 WO03044862 A1 WO 03044862A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wiring
- shield
- layer
- semiconductor device
- wiring layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/40—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes
- H10W20/495—Capacitive arrangements or effects of, or between wiring layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/40—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes
- H10W20/41—Interconnections external to wafers or substrates, e.g. back-end-of-line [BEOL] metallisations or vias connecting to gate electrodes characterised by their conductive parts
- H10W20/423—Shielding layers
Definitions
- the present invention relates to a wiring structure of a semiconductor device.
- the miniaturization of semiconductor devices has progressed, and the capacitance between wires has become an issue in circuit design.
- the adjacent wiring capacitance causes a problem that the driving time of each signal line is delayed.
- FIG. 28 shows an example in which wiring is configured using only one wiring layer, and the wiring layers are densely arranged.
- the wiring layer that is generally connected to the source or drain of an element such as a transistor or a transistor uses the lowest wiring layer, and these are configured with the minimum wiring that matches the contact pitch. Often do.
- the conventional semiconductor device as described above has a problem that the capacitance between adjacent wirings increases, noise between adjacent wirings increases, and the operation speed of signals decreases.
- ferroelectric memories require appropriate wiring capacitance.
- the present invention can reduce the capacitance between adjacent wirings, reduce noise between adjacent wirings, and further reduce power consumption without lowering signal operation speed. It is an object of the present invention to provide a semiconductor device capable of performing the above operation.
- the semiconductor device of the present invention has a configuration having the following wiring structure.
- wiring is formed in a plurality of wiring layers, and a structure is adopted in which the distance between wiring layers is increased.
- the capacitance between wiring layers in the same layer is reduced, and furthermore, the wiring positions of the first wiring layer and the second wiring layer are arranged at different positions when viewed from above, so that the first wiring layer is formed. This is a configuration for reducing the capacitance between wiring layers between different layers of the second layer and the second wiring layer.
- the first wiring layer is configured in the order of the first wiring, the first shield wiring, and the second wiring, and the third wiring, the second shield wiring, and the fourth wiring are formed in the second wiring layer. In this order.
- the first shield wiring and the second shield wiring are ground voltage lines or power supply voltage lines. Further, a configuration in which the ground voltage lines and the power supply voltage lines are alternately arranged, and a configuration in which the first wiring layer is a ground voltage line and the second wiring layer is a power supply voltage line.
- the wiring structure is composed of two wiring layer regions, and the wiring of each wiring layer region is connected to each other to form a wiring structure in which the resistance value and the capacitance value are balanced.
- the wiring structure shall be such that the width of the shield wiring is wider than the width of the signal wiring.
- the lowermost wiring layer is configured by a single wiring layer as in the conventional case, and the wiring structure of the upper layer is configured by a first wiring, a first shield wiring, and a second wiring in this order.
- the upper wiring layer has a wiring structure composed of a third wiring, a second shielded wiring, and a fourth wiring in this order.
- the capacitance between adjacent wirings can be reduced, noise between adjacent wirings can be reduced, and the power consumption can be reduced without lowering the signal operation speed. It can be reduced.
- FIG. 1 is a top view of a semiconductor device according to the first embodiment of the present invention
- FIG. 2 is a cross-sectional view of the semiconductor device according to the first embodiment of the present invention
- FIG. FIG. 4 is a cross-sectional view of the semiconductor device according to the second embodiment of the present invention
- FIG. 5 is a top view of the semiconductor device according to the third embodiment of the present invention
- FIG. 6 is a top view of a semiconductor device according to a fourth embodiment of the present invention
- FIG. 7 is a top view of a semiconductor device according to a fifth embodiment of the present invention
- FIG. FIG. 9 is a top view of a semiconductor device according to a seventh embodiment of the present invention
- FIG. 1 is a top view of a semiconductor device according to the first embodiment of the present invention
- FIG. 2 is a cross-sectional view of the semiconductor device according to the first embodiment of the present invention
- FIG. FIG. 4 is a cross-sectional view of the semiconductor device according to the second embodiment of the present invention
- FIG. 10 is a top view of a semiconductor device according to the eighth embodiment of the present invention.
- FIG. 11 is a top view of a semiconductor device according to a ninth embodiment of the present invention
- FIG. 12 is a semiconductor device according to the ninth embodiment of the present invention.
- Sectional view FIG. 1 3 is a top view of a semiconductor device according to a first 0 embodiment of the present invention
- FIG. 1 4 is a cross-sectional view of a semiconductor device according to a first 0 embodiment of the present invention
- FIG. 15 is a top view of the semiconductor device according to the first embodiment of the present invention
- FIG. 16 is a cross-sectional view of the semiconductor device according to the first embodiment of the present invention
- FIG. 18 is a top view of the semiconductor device according to the first embodiment of the present invention
- FIG. 18 is a cross-sectional view of the semiconductor device according to the second embodiment of the present invention
- FIG. FIG. 20 is a cross-sectional view of a semiconductor device according to the embodiment
- FIG. 20 is a top view of the semiconductor device according to the thirteenth embodiment of the present invention
- FIG. 21 is a semiconductor device according to the thirteenth embodiment of the present invention.
- FIG. 22 is a top view of the semiconductor device according to the 14th embodiment of the present invention.
- FIG. 23 is a cross-sectional view of the semiconductor device according to the 14th embodiment of the present invention.
- 4 is a cross-sectional view of the semiconductor device according to the fifteenth embodiment of the present invention, FIG.
- FIG. 25 is a cross-sectional view of the semiconductor device according to the sixteenth embodiment of the present invention
- FIG. First FIG. 27 is a top view of a semiconductor device according to a seventh embodiment
- FIG. 27 is a cross-sectional view of a semiconductor device according to a seventeenth embodiment of the present invention
- FIG. 28 is a cross-sectional view of a conventional semiconductor device.
- FIG. 1 is a top view of the first embodiment
- FIG. 2 is a cross-sectional view taken along A1-A2 of FIG.
- wirings for example, signal lines
- M12, M14, M16, and M18 are arranged in the first wiring layer in order.
- the signal lines M 21, M 23, M 25, and M 27 are sequentially arranged on the first wiring layer in the second wiring layer.
- the signal lines of the first wiring layer and the second wiring layer are arranged at substantially equal intervals.
- signal lines M 21 and M 12 and M 23 M14, M25 and M16, and M27 and M18 are connected to the amplifier.
- the signal lines M12, M14, M16, M18 and M21, M23, M25, M27 are arranged at different positions when viewed from above. Compared to the case where they are arranged at the same position when viewed from the top, noise between signal lines is reduced.
- the capacitance between adjacent wirings can be reduced. This has the effect of reducing noise between adjacent wires, reducing the signal operating speed, and reducing power consumption.
- the arrangement positions of the signal lines of the first wiring layer and the second wiring layer are different from each other when viewed from above, the effect is large.
- FIG. 3 is a top view of the second embodiment
- FIG. 4 is a cross-sectional view taken along line A1-A2 of FIG.
- the signals of the first wiring layer and the second wiring layer are arranged adjacent to each other by two with respect to the first embodiment, and the wiring intervals in each wiring layer are made equal. Not. Also, the signal of this adjacent wiring is connected to the amplifier.
- the capacitance between adjacent wirings can be reduced, and noise between adjacent wirings can also be reduced.
- This has the effect of reducing the operating speed of signals and reducing power consumption.
- the positions of the signal lines in the first wiring layer and the second wiring layer are different from each other when viewed from above. The effect may be large because it is arranged
- the wiring connected to the same amplifier is configured by the wiring of the same layer, there is little influence due to a variation in the manufacturing of the wiring and the like.
- FIG. 5 is a top view of the third embodiment.
- This embodiment is different from the first embodiment in that the first wiring layer and the second wiring layer are interchanged with each other in the middle of the electrically connected wiring, so that the first wiring layer With the structure having both regions of the second wiring layer, each wiring has the same configuration as a whole.
- the wiring electrically connected on the signal is arranged on a substantially straight line when viewed from the top.
- the connection between the wiring of the first wiring layer and the wiring of the second wiring layer does not intersect with other wirings, and has a simple layout configuration.
- the connection configuration of the amplifier is the same as that of the first embodiment.
- FIG. 6 is a top view of the fourth embodiment.
- the present embodiment is different from the first embodiment in that the first wiring layer and the second wiring layer are interchanged with each other in the middle of the electrically connected wiring, so that the first wiring layer With the structure having both regions of the second wiring layer, each wiring has the same configuration as a whole.
- This configuration reduces the effects of variations in wiring manufacturing, etc. Is possible.
- the wiring electrically connected on the signal is not arranged substantially in a straight line when viewed from above, but the wiring constituted by the same wiring layer is arranged almost in a straight line.
- the connection configuration of the amplifier is the same as that of the first embodiment, (Embodiment 5)
- FIG. 7 is a top view of the fifth embodiment.
- the wiring configuration is the same as the wiring configuration of the third embodiment, but the connection position of the amplifier is different, and two wirings connected to the same amplifier have the same wiring layer at the same position in the wiring direction. It is composed of
- FIG. 8 is a top view of the sixth embodiment.
- This embodiment has a configuration in which the fourth embodiment and the fifth embodiment are combined, and the effects of the respective embodiments can be obtained.
- FIG. 9 is a top view of the seventh embodiment.
- the configuration of the connected amplifier is changed from the wiring configuration of the second embodiment.
- the operation method is such that the amplifier is operated at a ratio of two
- the signal wiring connected to the amplifier that does not operate has the effect of a shield line. Therefore, the same effect as when a shield line is arranged on the adjacent wiring in the same layer is obtained, (Embodiment 8)
- FIG. 10 is a top view of the eighth embodiment.
- the configuration of the amplifier to be connected is changed from the wiring configuration of the first embodiment, and the arrangement position is set at both ends of the wiring.
- two wirings connected to the same amplifier are configured in the same wiring layer at the same position in the wiring direction. Signal wiring traversing the two wirings connected to the same amplifier When there is a noise, the effect of canceling noise from the signal is obtained.
- FIG. 11 is a top view of the ninth embodiment
- FIG. 12 is a cross-sectional view taken along line A 1 -A 2 of FIG. 11.
- the wirings M11 to M18 are sequentially arranged in the first wiring layer.
- the wirings M12, M14, M16, and M18 are wirings used as signal lines.
- Wirings M11, M13, M15, and M17 placed between signal lines M12, M14, M16, and M18 are designed to reduce signal line noise.
- the wirings M 21, M 23, M 25, and M 27 are wirings used as signal lines.
- the wiring M 22, M 24, M 26, and M 28 arranged between the signal lines M 21, M 23, M 25, and M 27 reduce the noise of the signal lines. There is as a shield wire.
- the signal lines M 12, M 14, M 16, M 18 and M 21: M 23, M 25, M 27 are arranged at different positions when viewed from above, A configuration in which a shield line is placed between them. This configuration enhances the shielding effect between signal lines as compared with a case where they are placed at the same position when viewed from above, and a configuration that further reduces signal line noise. I have. Also, here, the shield line is connected to the ground voltage line (GND potential), but it can also be connected to the power supply line.
- GND potential ground voltage line
- a signal line is formed using two wiring layers, and a structure in which a shield line is arranged between the signal lines can reduce a capacitance between adjacent wirings. This has the effect of reducing noise between adjacent wires, reducing the signal operating speed, and reducing power consumption.
- the noise shielding effect is high.
- ground voltage line as a shield line can be used as a ground voltage line wired from a power supply or the like.
- FIG. 13 is a top view of the tenth embodiment
- FIG. 14 is a cross-sectional view of A 1 -A 2 in FIG. In the top view, only the wiring of the second wiring layer on the top surface is shown.
- the configuration of the signal line is the same as that of the ninth embodiment.
- a feature of the tenth embodiment is that the connection of the shield line is connected to both the ground voltage line and the power supply voltage line.
- each shield line is arranged in order of the ground voltage line and the power supply voltage line.However, it is not always necessary to make the order, and it is possible to set each shield line to an optimum setting according to the layout. is there.
- FIG. 15 is a top view of the embodiment 11, and FIG. 16 is a cross-sectional view taken along line A1-A2 of FIG. In the top view, only the wiring of the second wiring layer on the top surface is shown.
- the configuration of the signal line is the same as that of the ninth and tenth embodiments, except that the shield line of the first wiring layer was connected to the power supply voltage line, and the shield line of the second wiring layer was connected to the ground voltage line.
- the configuration is a feature of the eleventh embodiment. '
- the shield wires M11, M13, and M15M17 of the first wiring layer are connected to the power supply voltage line (VDD potential) and the shield wires of the second wiring layer.
- M22, M24, M26, and M28 are connected to the ground voltage line (GND potential).
- the shield wire of the first wiring layer is a power supply voltage line
- the shield of the second wiring layer is a ground voltage line.
- the opposite configuration is possible if necessary.
- the layout can be easily configured by using the same voltage line for the shield line in the same wiring layer.
- Embodiment 11 are the same as those of Embodiments 9 and 10, and the ground voltage line and the power supply voltage line are made the same voltage line using shield lines of the same wiring layer. This has the effect that the layout can be easily configured.
- FIG. 17 is a top view of the embodiment 12
- FIG. 18 is a cross-sectional view of A 1 -A 2 in FIG. 17,
- FIG. 19 is a cross-sectional view of B 1 -B 2 in FIG.
- As a top view only the wiring of the second wiring layer on the top side is shown.
- the wiring area is largely divided into two areas, and two areas of the wiring configuration of Embodiment 9 are provided. Then, the wiring of the first wiring layer and the wiring of the second wiring layer of the wiring in these two regions are interchanged and connected. With this configuration, each wiring has both the first wiring layer and the second wiring layer, so that the capacitance value and the resistance value of each wiring can be balanced. , Stable operation is possible.
- the wirings M 11 to M 18 are sequentially arranged in the first wiring layer.
- wiring M12, M14, M16, and M18 are signal lines It is a wiring used as.
- the wires ⁇ 11, ⁇ 13, ⁇ 15, ⁇ 17 placed between the signal lines M 12, ⁇ 14, ⁇ 16, ⁇ 18 are designed to reduce signal line noise.
- wirings # 21 to # 28 are sequentially arranged in the second wiring layer.
- wires # 21, # 23, # 25, and # 27 are wires used as signal lines. Wirings placed between signal lines ⁇ 21, ⁇ 23, ⁇ 25, ⁇ 27 7 ⁇ ⁇ ⁇ 22, ⁇ 24, ⁇ 26, ⁇ 28 There is as a shield wire.
- M 1 2 is M 2 2 B
- M 14 is ⁇ 2 4 M
- the shield line is connected to the reset voltage line (GND potential), but it is of course possible to connect to the power supply voltage line, or to use both the ground voltage line and the power supply voltage line. .
- it is configured with two wiring regions, but it is also possible to configure with more wiring regions. By increasing the number of wiring regions, it is possible to further improve the balance between the capacitance value and the resistance value of each wiring.
- Embodiment 12 has the same effect as Embodiment 9 and also has a configuration in which the wiring region is divided into a plurality of regions, and the wirings in the respective regions are replaced with each other and connected to each other.
- the effect is that the value and resistance value are well balanced and stable operation can be performed.
- FIG. 20 is a top view of the embodiment 13 and FIG. 21 is a cross-sectional view taken along line A 1 -A 2 of FIG. In the top view, only the wiring of the second wiring layer on the top surface is shown. ⁇
- the configuration of the signal line is the same as that of the ninth embodiment.
- a feature of the thirteenth embodiment is that the line width of the shield line is larger than the line width of the signal line ′.
- the line width of 8 is larger than the line width of signal lines M12, M14, M16, M18, M21, M23, M25 ; M27 .
- Embodiment 13 includes the same effects as Embodiment 9 and the advantage that the shielding effect is further enhanced by increasing the width of the shielded wire compared to Embodiment 9.
- the shield line of the first wiring layer and the shield line of the second wiring layer do not overlap when viewed from the top, the configuration in which the shield lines overlap is further improved. The effect of the shield can be enhanced.
- FIG. 22 is a top view of the embodiment 14, and FIG. 23 is a cross-sectional view taken along the line A1-A2 of FIG. In the top view, only the wiring of the second wiring layer on the top surface is shown.
- the configuration of the signal lines of the first wiring layer and the second wiring layer is the same as that of the ninth embodiment, except that the third wiring layer is provided between the first wiring layer and the second wiring layer. And a shield layer M31.
- the shield effect can be further enhanced by disposing the shield layer M31 as the third wiring layer.
- FIG. 24 is a diagram showing a connection relationship between the wiring arranged as the signal line and the sense amplifier.
- the signal lines M12 and M21, M14 and M23, 1 ⁇ 16 and 3 ⁇ 4 ⁇ 25, Ml8 and M27 are sense amplifiers SA01, SA02 and SAO3, respectively. , SAO4.
- the present embodiment 15 has a configuration in which a signal line adjacent to a signal line of a first wiring layer and a signal line of a second wiring layer is connected to a sense amplifier. When used, adjacent memory cells can be used, and stable operation as a memory can be obtained. (Embodiment 16)
- FIG. 25 is a diagram showing the connection relationship between the wiring arranged as the signal line and the sense amplifier.
- the signal lines M 21 and M 23, M 12 and M 14, M 25 and M 27, M 16 and M 18 are the sense amplifiers SA 01, SAO 2, SAO 3, and SAO, respectively. This is the configuration connected to 4.
- the signal lines connected to the sense amplifier can be separated from each other, and the effect of noise between adjacent signal lines can be reduced.
- FIG. 26 is a top view of the embodiment 17 and FIG. 27 is a cross-sectional view of A 1 -A 2 in FIG. In the top view, only the wiring of the second wiring layer on the top surface is shown.
- the configuration of the signal line is a combination of the configuration of the ninth embodiment and the configuration in which the lowermost wiring layer is densely wired as in the past.
- the lowermost wiring is electrically connected to the signal lines of the first wiring layer and the second wiring layer.
- Embodiments 1 to 17 have been described. However, it is needless to say that a configuration in which each of these is used in combination is also possible and is included in the present invention.
- the seventh embodiment it is possible to reduce noise by using a signal line connected to the amplifier as a shield line by an operation method in which half of the amplifiers are not operated.
- the operation method described above can be applied to other embodiments.
- the wiring of the lowermost layer has a conventional structure.
- the embodiment can be applied to other embodiments.
Landscapes
- Semiconductor Integrated Circuits (AREA)
- Design And Manufacture Of Integrated Circuits (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB028229177A CN1319173C (zh) | 2001-11-19 | 2002-11-18 | 半导体装置 |
| US10/495,987 US20050017360A1 (en) | 2001-11-19 | 2002-11-18 | Semiconductor device |
| JP2003546403A JPWO2003044862A1 (ja) | 2001-11-19 | 2002-11-18 | 半導体装置 |
| EP02781808A EP1458027A4 (en) | 2001-11-19 | 2002-11-18 | SEMICONDUCTOR COMPONENT |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001352487 | 2001-11-19 | ||
| JP2001-352487 | 2001-11-19 | ||
| JP2002-240131 | 2002-08-21 | ||
| JP2002240131 | 2002-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003044862A1 true WO2003044862A1 (en) | 2003-05-30 |
Family
ID=26624587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/012029 Ceased WO2003044862A1 (en) | 2001-11-19 | 2002-11-18 | Semiconductor device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050017360A1 (ja) |
| EP (1) | EP1458027A4 (ja) |
| JP (1) | JPWO2003044862A1 (ja) |
| CN (1) | CN1319173C (ja) |
| WO (1) | WO2003044862A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007207301A (ja) * | 2006-01-31 | 2007-08-16 | Ricoh Co Ltd | 半導体記憶装置 |
| JP2009231513A (ja) * | 2008-03-21 | 2009-10-08 | Elpida Memory Inc | 半導体装置 |
| JP2012114215A (ja) * | 2010-11-24 | 2012-06-14 | Elpida Memory Inc | 半導体装置及びそのレイアウト方法 |
| WO2025239376A1 (ja) * | 2024-05-16 | 2025-11-20 | ヌヴォトンテクノロジージャパン株式会社 | 撮像素子および撮像装置 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6456230B2 (ja) * | 2015-04-21 | 2019-01-23 | 三菱電機株式会社 | タッチスクリーン、タッチパネル、表示装置及び電子機器 |
| KR102666075B1 (ko) * | 2016-12-16 | 2024-05-14 | 삼성전자주식회사 | 메모리 장치 및 메모리 장치의 도전 라인들의 배치 방법 |
| US20200279830A1 (en) * | 2019-02-28 | 2020-09-03 | Mercury Systems, Inc. | Interleaved multi-layer redistribution layer providing a fly-by topology with multiple width conductors |
| KR102777475B1 (ko) * | 2019-10-17 | 2025-03-10 | 에스케이하이닉스 주식회사 | 반도체 패키지 |
| JP2023043038A (ja) * | 2021-09-15 | 2023-03-28 | キオクシア株式会社 | 半導体装置 |
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2002
- 2002-11-18 CN CNB028229177A patent/CN1319173C/zh not_active Expired - Fee Related
- 2002-11-18 US US10/495,987 patent/US20050017360A1/en not_active Abandoned
- 2002-11-18 WO PCT/JP2002/012029 patent/WO2003044862A1/ja not_active Ceased
- 2002-11-18 JP JP2003546403A patent/JPWO2003044862A1/ja active Pending
- 2002-11-18 EP EP02781808A patent/EP1458027A4/en not_active Withdrawn
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007207301A (ja) * | 2006-01-31 | 2007-08-16 | Ricoh Co Ltd | 半導体記憶装置 |
| JP2009231513A (ja) * | 2008-03-21 | 2009-10-08 | Elpida Memory Inc | 半導体装置 |
| JP2012114215A (ja) * | 2010-11-24 | 2012-06-14 | Elpida Memory Inc | 半導体装置及びそのレイアウト方法 |
| WO2025239376A1 (ja) * | 2024-05-16 | 2025-11-20 | ヌヴォトンテクノロジージャパン株式会社 | 撮像素子および撮像装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2003044862A1 (ja) | 2005-03-24 |
| CN1319173C (zh) | 2007-05-30 |
| EP1458027A1 (en) | 2004-09-15 |
| EP1458027A4 (en) | 2006-06-07 |
| CN1589498A (zh) | 2005-03-02 |
| US20050017360A1 (en) | 2005-01-27 |
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