WO1999025026A1 - Schaltungsstruktur mit mindestens einem kondensator und verfahren zu dessen herstellung - Google Patents
Schaltungsstruktur mit mindestens einem kondensator und verfahren zu dessen herstellung Download PDFInfo
- Publication number
- WO1999025026A1 WO1999025026A1 PCT/DE1998/002507 DE9802507W WO9925026A1 WO 1999025026 A1 WO1999025026 A1 WO 1999025026A1 DE 9802507 W DE9802507 W DE 9802507W WO 9925026 A1 WO9925026 A1 WO 9925026A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pores
- main
- substrate
- etching step
- layer
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims description 10
- 239000011148 porous material Substances 0.000 claims abstract description 103
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- 238000005530 etching Methods 0.000 claims description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000003792 electrolyte Substances 0.000 claims description 14
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 11
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 5
- 239000002019 doping agent Substances 0.000 claims description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 5
- 229920005591 polysilicon Polymers 0.000 claims description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000002800 charge carrier Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/92—Capacitors having potential barriers
- H01L29/94—Metal-insulator-semiconductors, e.g. MOS
-
- 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66083—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by variation of the electric current supplied or the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. two-terminal devices
- H01L29/66181—Conductor-insulator-semiconductor capacitors, e.g. trench capacitors
-
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3063—Electrolytic etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
- H01L28/82—Electrodes with an enlarged surface, e.g. formed by texturisation
- H01L28/84—Electrodes with an enlarged surface, e.g. formed by texturisation being a rough surface, e.g. using hemispherical grains
Definitions
- Circuit structure with at least one capacitor and method for its production.
- Capacitors with large specific capacitance are of interest in many technical fields, for example in microelectronics and for audio and video applications.
- Electrolytic capacitors based on aluminum or tantalum are known as capacitors with large specific capacitance. These electrolytic capacitors have a specific capacitance in the range from 10 to 100 ⁇ F V / mm 3 .
- a method for producing a semiconductor capacitor in which the surface of a substrate made of single-crystal silicon is provided with grooves by etching which is dependent on the crystal orientation.
- the etching is carried out with a 50 percent potassium hydroxide / water mixture at 85 ° C. Troughs with a depth of 500 ⁇ m and a width of 5 ⁇ m, which are arranged at intervals of 10 ⁇ m, are formed. The length of the channels depends on their depth. In this way, the surface of the substrate is enlarged up to 100 times. The maximum achievable specific capacitance is thus limited to 2.3 ⁇ F V / mm 3 in a capacitor manufactured in this way.
- EP 0 528 281 A has proposed a capacitor which is implemented in a substrate made of single-crystal silicon.
- an electrochemical etching provides a surface of the substrate with hole openings whose depth is greater than its diameter.
- the surface of the hole openings is covered with ner dielectric layer and a conductive layer.
- the electrochemical etching achieves hole structures with an aspect ratio in the range of 1: 1000. Therefore, specific capacitances in the range of typically 10 ⁇ F V / mm 3 are achieved in the capacitor.
- the arrangement of the hole structures is predetermined by a photolithographically determined etching. This limits the distance between the hole structures to about 1 ⁇ m and thus the specific capacity that can be achieved.
- the invention is based on the problem of specifying a circuit structure with at least one capacitor in which, compared to the prior art, increased specific capacities can be achieved. Furthermore, a method for producing such a circuit structure is to be specified.
- a substrate which has main pores in a main area.
- the depth of the main pores is greater than their diameter.
- the side walls of the main pores have side pores whose diameter is at least a factor 10 smaller than that of the main pores.
- the surface of the main pores and the side pores is provided with a dielectric layer, the thickness of which is less than half the diameter of the side pores, so that the surface of the dielectric layer reflects the surface of the main pores and side pores.
- a conductive layer is arranged on the dielectric layer.
- the substrate and the conductive layer are each provided with contacts. Since in the condensation If the side walls of the main pores are provided with side pores, the surface area effective for the capacitor is increased again by the surface area of the side pores. This enables the specific capacity to be increased by a factor of 10 to 100.
- the substrate preferably has monocrystalline silicon at least in the region of the main surface.
- the capacitor can be manufactured using electrochemical etching.
- the location of the main pores is predetermined by a masked etching.
- the side pores are created by changing the process parameters. According to one embodiment of the invention, the side pores are generated by increasing the voltage during the electrochemical etching.
- the surface of the main pores is provided with an increased doping after the formation of the main pores.
- the side pores are subsequently formed by electrochemical etching. This takes advantage of the fact that the diameter of the pores depends on the dopant concentration of the silicon.
- the production of the capacitor using electrochemical etching has the advantage that branching of the side pores can occur when the side pores are formed, which in turn causes an increase in the surface area.
- the diameter of the main pores is preferably between 1 ⁇ m and 10 ⁇ m.
- the distance between centers of adjacent main pores is between 2 ⁇ m and 20 ⁇ m.
- the diameter of the side pores is at least a factor 10 smaller and is between 10 nm and 100 nm, preferably between 10 nm and 50 nm.
- the main pores are arranged essentially perpendicular to the main surface of the substrate and have a depth of between 100 ⁇ m and 600 ⁇ m.
- the dielectric layer is formed from silicon dioxide, silicon nitride or titanium dioxide or combinations of these layers. Silicon dioxide is one of the best known dielectrics and can therefore be controlled very well. With a dielectric made of titanium dioxide, larger capacities are achieved because of the higher dielectric constants.
- the dielectric layer is particularly advantageous to implement the dielectric layer as a triple layer made of silicon oxide, silicon nitride and silicon oxide.
- a triple layer is often referred to in the specialist literature as an ono layer and has a very low defect density. Defect densities well below 1 / cm 2 are achieved.
- the conductive layer is preferably formed from doped polysilicon, which is introduced into the side pores and the main pores by CVD deposition. In this way it can be ensured that the conductive layer covers the entire surface of the dielectric layer in the main pores and the side pores.
- FIG. 1 shows a section through a substrate after the formation of main pores.
- Figure 2 shows the section through the substrate after formation of a highly doped area.
- FIG. 3 shows the section through the substrate after the formation of side pores in the side walls of the main pores.
- Figure 4 shows the section through the substrate after formation of a dielectric layer, a conductive layer and contacts.
- FIG. 5 shows a section through a substrate after the formation of main pores.
- Figure 6 shows the section through the substrate after the formation of side pores.
- FIG. 7 shows the section through the substrate after formation of a dielectric layer, a conductive one
- the surface topology comprises depressions in the main surface 2, which are produced with the aid of a photolithographically produced photoresist mask and anisotropic etching, for example with KOH (not shown).
- the main surface 12 is brought into contact with an electrolyte for a first etching step.
- an electrolyte for a first etching step.
- hydrofluoric acid is used as the electrolyte.
- the substrate 11 is acted on as a anode with a potential of, for example, 2 V.
- the substrate 11 is illuminated from the rear.
- a current density of, for example, 15 mA / cm 2 is set.
- the main pores 13 is grid-shaped with a distance between adjacent recesses of 1 ⁇ m. After an etching time of 4 hours, the depth of the main pores 13 is 400 ⁇ m and the diameter of the main pores 13 is 2 ⁇ m with a distance from center to center of 4 ⁇ m.
- n + -doped region 14 is formed along the surface of the main pores 13 and the main surface 12, in which a dopant concentration of 1 to 3 ⁇ 10 18 cm -3 is present.
- arsenic or phosphorus is introduced by diffusion and tempering at 1000 ° C (see Figure 2).
- the main surface 12 is then brought into contact with an electrolyte again for a second section.
- the electrolyte contains hydrofluoric acid, water and ethanol in a ratio of 1: 1: 2 HF: H2 ⁇ : ethanol.
- a potential between 1 and 5 V is applied to the substrate 11 in such a way that a current density of 100 mA / cm 2 is established.
- the electrochemical etching is
- side pores 15 are formed in the side walls and on the bottom of the main pores.
- the side pores 15 have pore diameters of 10 to 50 nm.
- the maximum side pore diameters are at least a factor of 10 smaller than the main pores.
- the depth of the side pores 15 measured from the side wall of the main pores 13 is 0.5 to 5 ⁇ m (see FIG. 3).
- the surface of the side pores 15, the main pores 13 and the main surface 12 is subsequently provided with a dielectric layer 16 (see FIG. 4).
- the dielectric layer 16 is a triple layer which comprises a first silicon umoxid für, a silicon nitride layer and a second silicon oxide layer.
- the first silicon oxide layer and the second silicon oxide layer are formed by thermal oxidation, the silicon nitride layer by CVD deposition.
- the dielectric layer 16 is formed in a layer thickness of 5 to 10 nm.
- the conductive layer 17 is deposited in a thickness of up to 5 ⁇ m, so that it completely fills the side pores 15 and the main pores 13. In this way, that part of the conductive layer 17 which fills the main pores 13 represents a low-resistance connection for that part of the conductive layer 17 which fills the side pores 15.
- the surface of the n + -doped region 14 is exposed to the side of the main pores 13 in the region of the main surface 12.
- a masked etching is carried out to structure the conductive layer 17 and the dielectric layer 16.
- a first contact 18 to the conductive layer 17 and a second contact 19 to the n + -doped region 14 are formed by depositing a metal layer and structuring the metal layer.
- the first contact 18 and the second contact 19 contain aluminum, for example (see FIG. 4).
- n + -doped region 14 and the conductive layer 17 form capacitor electrodes and the dielectric layer 15 a capacitor dielectric of a capacitor.
- main pores 23 are formed in a main surface 22 of a substrate 21 by electrochemical etching (see FIG. 5).
- the substrate 21 has n-doped, monocrystalline silicon. It is doped to have a resistivity of 5 ⁇ cm.
- the main pores 23 are made by electrochemical etching generated in an acidic, fluoride-containing electrolyte, preferably in 6 wt .-% hydrofluoric acid.
- the arrangement of the main pores 23 is predetermined by masked etching using a photoresist mask.
- the main pores 23 are arranged in a grid. The distance between the centers of adjacent main pores 23 is 2 ⁇ m, for example.
- the electrochemical etching in the first etching step is continued for 240 minutes.
- the substrate 21 is connected as an anode and a potential of 2 V is applied to the electrolyte.
- the electrolyte is in communication with the main surface 22.
- the etching is continued with these parameters until the main pores 23 have a depth of 400 ⁇ m.
- the current density required for the etching is set to 15 mA / cm 2 by illuminating the back of the substrate 21.
- a second etching step the potential applied to the substrate 21 is increased to 10 V.
- the second step is continued until the side pores 24 have a depth of 0.5 to 5 ⁇ m perpendicular to the side wall of the main pore 23.
- the side pores 24 are partially branched, which further enlarges the surface.
- the dielectric layer 25 is formed as a triple layer made of silicon oxide, silicon nitride and silicon oxide by thermal oxidation and CVD deposition.
- the thickness of the dielectric layer is 5 to 10 nm.
- a conductive layer 26 is deposited which completely fills the side pores 24 and the main pore 23.
- the conductive layer 26 is preferably deposited by CVD deposition from doped polysilicon in a layer thickness of 5 ⁇ m.
- the dielectric layer 25 and the conductive layer 26 are structured in such a way that the main surface 22 to the side of the main pores 23 and the side pores 24 is partially exposed.
- a first contact 27 and a second contact 28 are formed on the surface of the conductive layer 26 and on the exposed main surface 22 by applying and structuring a metal layer, for example made of aluminum.
- a metal layer for example made of aluminum.
- the substrate 21 and the conductive layer 26 each form a capacitor electrode and the dielectric layer 25 forms the capacitor dielectric.
- the main pores 23 and the side pores 24 bring about an increase in surface area from 2000 to 20,000.
- the capacitor thus has a specific capacitance of 50 to 500 ⁇ FV / mm 3 .
- the second contact to the substrate can be arranged on the back of the substrate. Furthermore, a large number of capacitors can be produced within a substrate.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Semiconductor Integrated Circuits (AREA)
- Weting (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000519928A JP2001523050A (ja) | 1997-11-12 | 1998-08-26 | 少なくとも1つのコンデンサを有する回路構造およびその製造方法 |
EP98951220A EP1048082A1 (de) | 1997-11-12 | 1998-08-26 | Schaltungsstruktur mit mindestens einem kondensator und verfahren zu dessen herstellung |
KR1020007005084A KR20010031974A (ko) | 1997-11-12 | 1998-08-26 | 적어도 하나의 커패시터를 가진 회로 및 그 제조 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19750148.6 | 1997-11-12 | ||
DE19750148 | 1997-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999025026A1 true WO1999025026A1 (de) | 1999-05-20 |
Family
ID=7848515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/002507 WO1999025026A1 (de) | 1997-11-12 | 1998-08-26 | Schaltungsstruktur mit mindestens einem kondensator und verfahren zu dessen herstellung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1048082A1 (de) |
JP (1) | JP2001523050A (de) |
KR (1) | KR20010031974A (de) |
WO (1) | WO1999025026A1 (de) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002039501A2 (de) * | 2000-11-10 | 2002-05-16 | Infineon Technologies Ag | Verfahren zur herstellung von grabenkondensatoren |
WO2002039492A1 (de) * | 2000-11-10 | 2002-05-16 | Infineon Technologies Ag | Verfahren zur herstellung von grabenkondensatoren für hochintegrierte halbleiterspeicher |
DE10143283C1 (de) * | 2001-09-04 | 2002-12-12 | Infineon Technologies Ag | Verfahren zur Herstellung eines Grabenkondensators für einen Halbleiterspeicher |
DE10138981A1 (de) * | 2001-08-08 | 2003-03-06 | Infineon Technologies Ag | Verfahren zur elektrochemischen Oxidation eines Halbleiter-Substrats |
WO2003028093A2 (de) * | 2001-09-07 | 2003-04-03 | Infineon Technologies Ag | Verfahren zur bildung eines soi-substrats, vertikaler transistor und speicherzelle mit vertikalem transistor |
WO2003036709A2 (en) * | 2001-10-19 | 2003-05-01 | Infineon Technologies Ag | A method of forming a silicon dioxide layer on a curved silicon surface |
DE10153187C1 (de) * | 2001-10-27 | 2003-07-10 | Infineon Technologies Ag | Herstellungsverfahren zum Herstellen einer räumlichen Struktur in einem Halbleitersubstrat und Halbleitersubstrat mit einer Einrichtung zum Ätzen einer räumlichen Struktur in dem Halbleitersubstrat |
DE10217569A1 (de) * | 2002-04-19 | 2003-11-13 | Infineon Technologies Ag | Vorrichtung auf Basis von partiell oxidiertem porösen Silizium |
WO2004027861A1 (de) * | 2002-09-16 | 2004-04-01 | Infineon Technologies Ag | Halbleiterbauteil mit im substrat vergrabenen kondensatoren und davon isolierter bauelementschicht |
EP2278614A1 (de) * | 2009-07-21 | 2011-01-26 | STMicroelectronics (Crolles 2) SAS | Durchkontaktierung mit seitlichen Erweiterungen |
WO2020201547A1 (de) * | 2019-04-05 | 2020-10-08 | Arno Mecklenburg | Integrierbarer kondensator |
CN113544847A (zh) * | 2019-03-13 | 2021-10-22 | 松下知识产权经营株式会社 | 电容器及其制造方法 |
US11948995B2 (en) | 2020-03-17 | 2024-04-02 | Panasonic Intellectual Property Management Co., Ltd. | Capacitor and method for producing same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7027352B2 (ja) * | 2019-01-21 | 2022-03-01 | 株式会社東芝 | コンデンサ |
TW202243237A (zh) * | 2021-04-21 | 2022-11-01 | 日商松下知識產權經營股份有限公司 | 電容器 |
WO2024116968A1 (ja) * | 2022-11-29 | 2024-06-06 | パナソニックIpマネジメント株式会社 | キャパシタ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0424623A2 (de) * | 1989-10-26 | 1991-05-02 | International Business Machines Corporation | Dreidimensionale Halbleiterstrukturen geformt aus ebenen Schichten |
JPH05160342A (ja) * | 1991-12-02 | 1993-06-25 | Canon Inc | 半導体装置及びその製造方法 |
US5635419A (en) * | 1994-10-28 | 1997-06-03 | International Business Machines Corporation | Porous silicon trench and capacitor structures |
-
1998
- 1998-08-26 WO PCT/DE1998/002507 patent/WO1999025026A1/de not_active Application Discontinuation
- 1998-08-26 EP EP98951220A patent/EP1048082A1/de not_active Ceased
- 1998-08-26 KR KR1020007005084A patent/KR20010031974A/ko not_active Application Discontinuation
- 1998-08-26 JP JP2000519928A patent/JP2001523050A/ja not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0424623A2 (de) * | 1989-10-26 | 1991-05-02 | International Business Machines Corporation | Dreidimensionale Halbleiterstrukturen geformt aus ebenen Schichten |
JPH05160342A (ja) * | 1991-12-02 | 1993-06-25 | Canon Inc | 半導体装置及びその製造方法 |
US5635419A (en) * | 1994-10-28 | 1997-06-03 | International Business Machines Corporation | Porous silicon trench and capacitor structures |
Non-Patent Citations (3)
Title |
---|
"ENHANCED CHARGE STORAGE IN DRAM TRENCH CAPACITORS", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 36, no. 12, 1 December 1993 (1993-12-01), pages 453 - 455, XP000419028 * |
LEHMANN V: "POROUS SILICON - A NEW MATERIAL FOR MEMS", PROCEEDINGS OF THE 9TH. ANNUAL INTERNATIONAL WORKSHOP ON MICRO ELEC MECHANICAL SYSTEMS, INVESTIGATION OF MICRO STRUCTURES, SENSORS, ACTUATORS, MACHINES AND SYSTEMS. SAN DIEGO, FEB. 11 - 15, 1996, no. WORKSHOP 9, 11 February 1996 (1996-02-11), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 1 - 6, XP000689241 * |
PATENT ABSTRACTS OF JAPAN vol. 017, no. 556 (E - 1444) 6 October 1993 (1993-10-06) * |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002039501A2 (de) * | 2000-11-10 | 2002-05-16 | Infineon Technologies Ag | Verfahren zur herstellung von grabenkondensatoren |
WO2002039492A1 (de) * | 2000-11-10 | 2002-05-16 | Infineon Technologies Ag | Verfahren zur herstellung von grabenkondensatoren für hochintegrierte halbleiterspeicher |
WO2002039501A3 (de) * | 2000-11-10 | 2003-03-13 | Infineon Technologies Ag | Verfahren zur herstellung von grabenkondensatoren |
DE10055711B4 (de) * | 2000-11-10 | 2008-04-30 | Qimonda Ag | Verfahren zur Herstellung von Grabenkondensatoren |
US6878600B2 (en) | 2000-11-10 | 2005-04-12 | Infineon Technologies Ag | Method for fabricating trench capacitors and semiconductor device with trench capacitors |
DE10138981A1 (de) * | 2001-08-08 | 2003-03-06 | Infineon Technologies Ag | Verfahren zur elektrochemischen Oxidation eines Halbleiter-Substrats |
DE10138981B4 (de) * | 2001-08-08 | 2005-09-08 | Infineon Technologies Ag | Verfahren zur Bildung von Siliziumoxid durch elektrochemische Oxidation eines Halbleiter-Substrats mit Vertiefungen |
US6559069B2 (en) | 2001-08-08 | 2003-05-06 | Infineon Technologies Ag | Process for the electrochemical oxidation of a semiconductor substrate |
DE10143283C1 (de) * | 2001-09-04 | 2002-12-12 | Infineon Technologies Ag | Verfahren zur Herstellung eines Grabenkondensators für einen Halbleiterspeicher |
US6734077B2 (en) | 2001-09-04 | 2004-05-11 | Infineon Technologies Ag | Method for fabricating a trench capacitor for a semiconductor memory |
WO2003028093A2 (de) * | 2001-09-07 | 2003-04-03 | Infineon Technologies Ag | Verfahren zur bildung eines soi-substrats, vertikaler transistor und speicherzelle mit vertikalem transistor |
WO2003028093A3 (de) * | 2001-09-07 | 2003-08-14 | Infineon Technologies Ag | Verfahren zur bildung eines soi-substrats, vertikaler transistor und speicherzelle mit vertikalem transistor |
US7084043B2 (en) | 2001-09-07 | 2006-08-01 | Infineon Technologies Ag | Method for forming an SOI substrate, vertical transistor and memory cell with vertical transistor |
WO2003036709A3 (en) * | 2001-10-19 | 2004-01-08 | Infineon Technologies Ag | A method of forming a silicon dioxide layer on a curved silicon surface |
EP1306894A1 (de) * | 2001-10-19 | 2003-05-02 | Infineon Technologies AG | Verfahren zur Bildung einer Siliziumdioxidschicht auf einer gekrümmten Silizium-Oberfläche |
WO2003036709A2 (en) * | 2001-10-19 | 2003-05-01 | Infineon Technologies Ag | A method of forming a silicon dioxide layer on a curved silicon surface |
US7081384B2 (en) | 2001-10-19 | 2006-07-25 | Infineon Technologies, Ag | Method of forming a silicon dioxide layer |
US6660654B2 (en) | 2001-10-27 | 2003-12-09 | Infineon Technologies Ag | Fabrication method and apparatus for fabricating a spatial structure in a semiconductor substrate |
DE10153187C1 (de) * | 2001-10-27 | 2003-07-10 | Infineon Technologies Ag | Herstellungsverfahren zum Herstellen einer räumlichen Struktur in einem Halbleitersubstrat und Halbleitersubstrat mit einer Einrichtung zum Ätzen einer räumlichen Struktur in dem Halbleitersubstrat |
DE10217569A1 (de) * | 2002-04-19 | 2003-11-13 | Infineon Technologies Ag | Vorrichtung auf Basis von partiell oxidiertem porösen Silizium |
WO2004027861A1 (de) * | 2002-09-16 | 2004-04-01 | Infineon Technologies Ag | Halbleiterbauteil mit im substrat vergrabenen kondensatoren und davon isolierter bauelementschicht |
CN1320638C (zh) * | 2002-09-16 | 2007-06-06 | 因芬尼昂技术股份公司 | 半导体基板、形成于其中的半导体电路及其制造方法 |
US7214582B2 (en) | 2002-09-16 | 2007-05-08 | Infineon Technologies Ag | Semiconductor substrate and semiconductor circuit formed therein and fabrication methods |
EP2278614A1 (de) * | 2009-07-21 | 2011-01-26 | STMicroelectronics (Crolles 2) SAS | Durchkontaktierung mit seitlichen Erweiterungen |
US8350363B2 (en) | 2009-07-21 | 2013-01-08 | Stmicroelectronics (Crolles 2) Sas | Electric via comprising lateral outgrowths |
CN113544847A (zh) * | 2019-03-13 | 2021-10-22 | 松下知识产权经营株式会社 | 电容器及其制造方法 |
WO2020201547A1 (de) * | 2019-04-05 | 2020-10-08 | Arno Mecklenburg | Integrierbarer kondensator |
US20230069645A1 (en) * | 2019-04-05 | 2023-03-02 | Arno Mecklenburg | Integratable capacitor |
US11935968B2 (en) | 2019-04-05 | 2024-03-19 | Arno Mecklenburg | Integratable capacitor |
US11948995B2 (en) | 2020-03-17 | 2024-04-02 | Panasonic Intellectual Property Management Co., Ltd. | Capacitor and method for producing same |
Also Published As
Publication number | Publication date |
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JP2001523050A (ja) | 2001-11-20 |
KR20010031974A (ko) | 2001-04-16 |
EP1048082A1 (de) | 2000-11-02 |
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