KR20000013668A - 수산화칼륨용액에 의한 매스의 언더컷팅을보상하기 위한 반도체 가속도센서의 제조방법 - Google Patents
수산화칼륨용액에 의한 매스의 언더컷팅을보상하기 위한 반도체 가속도센서의 제조방법 Download PDFInfo
- Publication number
- KR20000013668A KR20000013668A KR1019980032656A KR19980032656A KR20000013668A KR 20000013668 A KR20000013668 A KR 20000013668A KR 1019980032656 A KR1019980032656 A KR 1019980032656A KR 19980032656 A KR19980032656 A KR 19980032656A KR 20000013668 A KR20000013668 A KR 20000013668A
- Authority
- KR
- South Korea
- Prior art keywords
- mass
- potassium hydroxide
- undercutting
- hydroxide solution
- etching
- 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.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 title 1
- 230000001133 acceleration Effects 0.000 claims abstract description 38
- 238000005530 etching Methods 0.000 claims abstract description 38
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 35
- 239000010703 silicon Substances 0.000 claims abstract description 35
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 238000000059 patterning Methods 0.000 claims abstract description 6
- 238000000151 deposition Methods 0.000 claims abstract description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 238000002161 passivation Methods 0.000 claims 2
- 239000013078 crystal Substances 0.000 abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 238000001020 plasma etching Methods 0.000 description 4
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
- G01L9/0042—Constructional details associated with semiconductive diaphragm sensors, e.g. etching, or constructional details of non-semiconductive diaphragms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/06—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices
- G01L9/065—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of piezo-resistive devices with temperature compensating means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
- H01L21/0334—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
- H01L21/0337—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane characterised by the process involved to create the mask, e.g. lift-off masks, sidewalls, or to modify the mask, e.g. pre-treatment, post-treatment
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Pressure Sensors (AREA)
Abstract
Description
Claims (4)
- 실리콘 기판에 형성된 매스의 유동을 상기 매스를 지지하는 빔을 통해 전달받는 압저항체의 저항값변화에 의해 외부로부터 가해지는 가속도를 감지하는 반도체 가속도센서의 제조방법에 있어서,상기 실리콘 기판의 상면과 하면에 각각 패터닝(patterning)을 위한 보호막을 증착하는 단계;상기 매스의 언더컷팅을 방지하기 위해 식각율에 따른 오프셋을 적용하여 설계된 마스크의 레이아웃(layout)에 따라 상기 실리콘의 하면에 증착된 보호막을 패터닝하는 단계; 및상기 패터닝된 실리콘 기판에 상기 매스를 형성하기 위해 비등방성 식각용액인 수산화칼륨용액으로 식각하는 단계를 포함하는 것을 특징으로 하는 수산화칼륨용액에 의한 매스의 언더컷팅을 보상하는 반도체 가속도센서의 제조방법.
- 제 1항에 있어서, 상기 보호막을 증착하는 단계는 실리콘 질화막(Si3N4)을 보호막으로 사용하는 것을 특징으로 하는 수산화칼륨용액에 의한 매스의 언더컷팅을 보상하는 반도체 가속도센서의 제조방법.
- 제 1항에 있어서, 상기 식각율에 따른 오프셋을 적용하여 상기 마스크의 레이아웃을 설계하는 경우 상기 매스에 대응하는 정사각형의 각 모서리에 그 모서리를 중심점으로 하는 보상용 정사각형이 1/4만큼 중첩되는 형상으로 상기 마스크를 제작하돼, 상기 보상용 정사각형의 크기는 다음의 관계식에 의해 결정하는 것을 특징으로 하는 수산화칼륨용액에 의한 매스의 언더컷팅을 보상하는 반도체 가속도센서의 제조방법.[관계식] c = d = 0. 64×t여기서, c는 보상용 정사각형의 교차점과 모서리 사이의 거리,d는 보상용 정사각형의 바깥선분과 모서리 사이의 거리,t는 수산화칼륨용액에 의해 식각되는 식각깊이.
- 제 1항에 있어서, 상기 식각단계는 약 45 중량%의 수산화칼륨용액을 약 80℃의 반응온도에서 약 6시간 30분동안 반응시키는 것을 특징으로 하는 수산화칼륨용액에 의한 매스의 언더컷팅을 보상하는 반도체 가속도센서의 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0032656A KR100379928B1 (ko) | 1998-08-12 | 1998-08-12 | 수산화칼륨용액에의한매스의언더컷팅을보상하기위한반도체가속도센서의제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0032656A KR100379928B1 (ko) | 1998-08-12 | 1998-08-12 | 수산화칼륨용액에의한매스의언더컷팅을보상하기위한반도체가속도센서의제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000013668A true KR20000013668A (ko) | 2000-03-06 |
KR100379928B1 KR100379928B1 (ko) | 2003-09-13 |
Family
ID=19547005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-1998-0032656A Expired - Fee Related KR100379928B1 (ko) | 1998-08-12 | 1998-08-12 | 수산화칼륨용액에의한매스의언더컷팅을보상하기위한반도체가속도센서의제조방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100379928B1 (ko) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0155140B1 (ko) * | 1994-04-16 | 1998-10-15 | 최시영 | 실리콘 가속도 센서의 제조방법 |
-
1998
- 1998-08-12 KR KR10-1998-0032656A patent/KR100379928B1/ko not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR100379928B1 (ko) | 2003-09-13 |
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Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19980812 |
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