WO2005083764A1 - 半導体装置の製造方法および半導体装置 - Google Patents
半導体装置の製造方法および半導体装置 Download PDFInfo
- Publication number
- WO2005083764A1 WO2005083764A1 PCT/JP2005/003301 JP2005003301W WO2005083764A1 WO 2005083764 A1 WO2005083764 A1 WO 2005083764A1 JP 2005003301 W JP2005003301 W JP 2005003301W WO 2005083764 A1 WO2005083764 A1 WO 2005083764A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sensor element
- substrate
- jetty
- diaphragm
- semiconductor device
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/84—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by variation of applied mechanical force, e.g. of pressure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/04—Microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
Definitions
- the present invention relates to a semiconductor device, for example, a MEMS (Micro-MEMS) having a micro movable structure.
- a MEMS Micro-MEMS
- the present invention relates to a method for manufacturing a semiconductor device such as a capacitance detection type sensor element as a component and a semiconductor device.
- FIG. 4 is a diagram showing a microphone element as an example of a semiconductor device, (a) showing a plan view, and (b) being a cross-sectional view along line BB of (a).
- the microphone element 10 includes a substrate 1, an oxide film 2, a diaphragm 3, a fixed part 4, and a back electrode 5a.
- Oxide film 2 is formed on substrate 1
- vibration plate 3 is formed on oxide film 2
- fixed portion 4 is formed on vibration plate 3 with an insulating material.
- a back electrode 5a is formed on the fixed part 4 so as to face the substrate 1.
- the fixed portion 4 forms a gap region 6 between the substrate 1 and the back electrode 5a, and the back electrode 5a is provided with a number of through holes 7 serving as acoustic holes shown in FIG. 4 (b). .
- the illustration of the through holes 7 is omitted.
- the substrate 1 and the oxidizing film 2 are provided with an acoustic opening 8 having a concave force at the lower portion, and the lower surface of the diaphragm 3 is exposed.
- each element is cut into semiconductor chips by dicing technology and divided, and a lead frame is mounted on the semiconductor chips. Connected and packaged.
- the dicing technique involves cutting the silicon wafer 103 while spraying the cleaning water 102 by rotating the blade 101 coated with diamond powder at high speed. More done.
- foreign matter 104 such as chips scatters.
- a protective tape 9 for protecting the surface is attached to the back electrode 5a of each element, and the dicing is performed after the surface of the element is protected by the protective tape 9.
- an object of the present invention is to provide a method and an apparatus for manufacturing a semiconductor device, which do not cause damage to a structure body without foreign matter such as chips entering.
- the present invention provides a process of forming sensor elements on a plurality of substrate areas to be separated along dicing lines extending in the vertical and horizontal directions, and enclosing the entire periphery of the sensor element on each substrate area.
- the sensor element includes an insulating layer and a conductive layer thereon
- the ridge portion includes an insulating layer and a conductive layer thereon, and the insulation between the insulating layer of the sensor element and the ridge portion is provided.
- the layers are formed by the same process, and the conductive layer of the sensor element and the conductive layer of the jetty are formed by the same process. By forming in the same process, the number of processes to form the jetty It is not necessary to increase the cost, so that the cost does not increase.
- the sensor element is supported by the fixed portion so as to form a gap between the diaphragm, a fixed portion formed on a substrate region located around the diaphragm, and the diaphragm.
- the insulating layer of the sensor element constitutes a fixed portion
- the conductive layer of the sensor element constitutes an electrode layer.
- Another aspect of the present invention provides a sensor comprising: a rectangular substrate; a sensor element formed on the substrate; and a rectangular jetty formed on the substrate so as to surround the entire periphery of the sensor element.
- the element and the jetty have substantially the same height.
- Still another aspect of the present invention includes a rectangular substrate, a sensor element formed on the substrate, and a rectangular jetty formed on the substrate so as to surround the entire periphery of the sensor element.
- the sensor element and the jetty have a common laminated structure.
- the sensor element and the jetty have a common laminated structure, they can be manufactured using the same member, and an increase in cost due to the provision of the jetty can be suppressed.
- the laminated structure of the sensor element and the laminated structure of the jetty are formed by the same process.
- the same process can be used for manufacturing, a new process is not required, so that an increase in cost due to the provision of the jetty can be suppressed.
- the sensor element is supported by the diaphragm, a fixing portion formed on a substrate region located around the diaphragm, and the fixing portion so as to form a gap between the diaphragm and the fixing portion. Electrode layer.
- FIG. 1 is a diagram of a semiconductor device according to an embodiment of the present invention.
- FIG. 2 A state in which a silicon wafer on which a plurality of semiconductor devices shown in FIG. 1 are formed is diced FIG.
- FIG. 3 is a view continuously showing a manufacturing process of a semiconductor device according to an embodiment of the present invention.
- FIG. 4 is a diagram showing a conventional microphone element.
- FIG. 5 is a view showing a conventional dicing step.
- FIG. 6 is a cross-sectional view showing a step of dicing a silicon wafer in a conventional dicing step.
- FIG. 7 is a cross-sectional view showing a step of dicing in a state where the element surface is covered with a protective tape.
- FIG. 1 is a diagram showing a semiconductor device according to an embodiment of the present invention, in particular, (a) is a plan view, and (b) is a cross-sectional view taken along line (lb)-(lb) of FIG. .
- a sensor element 11 such as a microphone element as an example of a capacitance detection type sensor element constituting a semiconductor device includes a substrate 1, an oxide film 2, It includes a plate 3, a fixing part 4, and a back electrode 5.
- the back electrode 5 as an electrode layer is supported by the four fixing portions 4 so as to form a gap region 6 with the diaphragm 3, and a gap is provided between each of the fixing portions 4. A part is provided.
- the substrate 1 is formed in a rectangular shape having four sides along a dicing line extending in the vertical and horizontal directions, and the ridge 12 surrounds the sensor element 11 formed on the fixed part 4 so as to surround the sensor. It is formed so as to be located between the element 11 and the side.
- the jetty 12 has a rectangular shape having four sides, and each side continuously extends in parallel with each side of the substrate 1.
- the jetty portion 12 and the sensor element 11 have a common laminated structure and are formed by the same process.
- the jetty portion 12 includes an insulating layer 12a formed of the same material and the same process as the fixing portion 4, and a conductive layer 12b formed of the same material and the same process as the back electrode 5.
- the height of the jetty portion 12 becomes substantially equal to the height of the sensor element 11.
- FIG. 2 shows dicing a silicon wafer on which a plurality of sensor elements 11 shown in FIG. 1 are formed. It is sectional drawing which shows a state. A plurality of sensor elements 11 having the layered structure described with reference to FIG. 1 are formed on a silicon wafer 13, and an insulating tape 9 is adhered to the back electrode 5 and the jetty 12 in close contact. Have been. Then, the silicon wafer 13 is diced along the side of the substrate 1 by the blade 101 so as to be guided between the ridges 12 and 12 of the adjacent sensor element 11, and cut into semiconductor chips.
- the intervals between the ridge portions 12, 12 between the sensor elements 11 can be made equal, the force acting on the protective tape 9 when dicing is performed with a blade along the die cylinder line can be made uniform.
- the protection tape 9 does not float or peel off. Even when the cleaning water containing the foreign matter 104 leaks to the lower part, the foreign matter 104 does not enter the inside of the sensor element 11 even if the cleaning water containing the foreign matter 104 leaks to the lower part. It is possible to prevent the structure of the sensor element 11 from being damaged due to a decrease in the protection ability.
- FIG. 3 is a view sequentially showing a manufacturing process of a semiconductor device according to an embodiment of the present invention.
- a method for manufacturing the sensor element shown in FIG. 1 will be described with reference to FIG.
- a wafer 200 having an insulating film 202 made of an oxide film and a conductive layer 203 made of a polycrystalline silicon film formed on the surface side of a substrate 201 is prepared.
- an insulating film 204 is formed on the conductive layer 203 as shown in FIG. 3 (b), and a conductive layer 205 is formed on the insulating film 204 as shown in FIG. 3 (c).
- the conductive layer 205 forms the back electrode 5 and the conductive layer 12b of the jetty portion 12.
- a photoresist is applied to the conductive layer 205, unnecessary portions are removed by a photolithography technique to form a resist pattern, and etching is performed using the resist pattern as a mask, as shown in FIG. 3 (d).
- the back electrode 5, the through hole 7 to be an acoustic hole, and the conductive layer 12b of the jetty 12 are formed as shown.
- a resist pattern 206 is formed on the back side of the substrate 201 as shown in FIG. 3 (e), and etching is performed from the substrate 201 and the insulating film 202 to the portion of the conductive layer 203 as shown in FIG. 3 (f). Thereby, the acoustic opening 8 is formed, and the diaphragm 3 shown in FIG. 1 is formed by the conductive layer 203 exposed at the acoustic opening 8 portion. Further, as shown in FIG. 3 (g), the gap region 6 is formed between the diaphragm 3 and the back electrode 5 by etching the insulating film 204 in the downward and lateral directions.
- the fixed portion 4 and the insulating layer 12a of the ridge 12 are formed so as to surround the fixed portion 4 by the insulating film 204 remaining on the outer peripheral portion of the diaphragm 3.
- the substrate 201 becomes the substrate 1 shown in FIG. 1, and the insulating film 202 becomes the oxidation film 2.
- the conductive layer 12b of the jetty 12 can be formed by the same material and the same process as the back electrode 5, and the insulating layer 12a of the jetty 12 can be formed by the same material and the same process as the fixing portion 4. Since there is no need to add a process that requires the use of new materials to form the jetty 12, the provision of the jetty 12 does not increase the cost.
- the present invention is not limited to this, and may be applied to other sensor elements.
- the semiconductor chip can be formed by dicing while preventing foreign substances from entering the gap region between the diaphragm and the back electrode, damage to the element structure is caused. And is effectively used for microphone elements and the like.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Pressure Sensors (AREA)
- Dicing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004054695A JP2005244094A (ja) | 2004-02-27 | 2004-02-27 | 半導体装置の製造方法および半導体装置 |
JP2004-054695 | 2004-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005083764A1 true WO2005083764A1 (ja) | 2005-09-09 |
Family
ID=34908800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/003301 WO2005083764A1 (ja) | 2004-02-27 | 2005-02-28 | 半導体装置の製造方法および半導体装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2005244094A (ja) |
WO (1) | WO2005083764A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006297543A (ja) * | 2005-04-20 | 2006-11-02 | Sumitomo Precision Prod Co Ltd | Memsデバイス及びその製造方法 |
WO2010106733A1 (ja) * | 2009-03-16 | 2010-09-23 | パナソニック株式会社 | 半導体装置 |
US7838323B2 (en) | 2006-06-09 | 2010-11-23 | Panasonic Corporation | Method for fabricating semiconductor device |
JP2013031228A (ja) * | 2005-12-29 | 2013-02-07 | Analog Devices Inc | サポート部材を用いてマイクロフォンを形成するためのプロセス |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4737720B2 (ja) * | 2006-03-06 | 2011-08-03 | ヤマハ株式会社 | ダイヤフラム及びその製造方法並びにそのダイヤフラムを有するコンデンサマイクロホン及びその製造方法 |
JP2007283470A (ja) * | 2006-04-20 | 2007-11-01 | Toyota Motor Corp | 半導体素子及び半導体素子の製造方法 |
JP2009089100A (ja) * | 2007-09-28 | 2009-04-23 | Yamaha Corp | 振動トランスデューサ |
JP2009089098A (ja) * | 2007-09-28 | 2009-04-23 | Yamaha Corp | 振動トランスデューサおよび振動トランスデューサの製造方法 |
JP2009089099A (ja) * | 2007-09-28 | 2009-04-23 | Yamaha Corp | 振動トランスデューサ |
JP4946796B2 (ja) * | 2007-10-29 | 2012-06-06 | ヤマハ株式会社 | 振動トランスデューサおよび振動トランスデューサの製造方法 |
JP5092167B2 (ja) * | 2009-03-24 | 2012-12-05 | 三菱電機株式会社 | 半導体圧力センサおよびその製造方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002016264A (ja) * | 2000-06-27 | 2002-01-18 | Denso Corp | 半導体装置およびその製造方法 |
-
2004
- 2004-02-27 JP JP2004054695A patent/JP2005244094A/ja not_active Withdrawn
-
2005
- 2005-02-28 WO PCT/JP2005/003301 patent/WO2005083764A1/ja active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002016264A (ja) * | 2000-06-27 | 2002-01-18 | Denso Corp | 半導体装置およびその製造方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006297543A (ja) * | 2005-04-20 | 2006-11-02 | Sumitomo Precision Prod Co Ltd | Memsデバイス及びその製造方法 |
JP2013031228A (ja) * | 2005-12-29 | 2013-02-07 | Analog Devices Inc | サポート部材を用いてマイクロフォンを形成するためのプロセス |
US7838323B2 (en) | 2006-06-09 | 2010-11-23 | Panasonic Corporation | Method for fabricating semiconductor device |
WO2010106733A1 (ja) * | 2009-03-16 | 2010-09-23 | パナソニック株式会社 | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2005244094A (ja) | 2005-09-08 |
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