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1. (WO2018160239) HIGH VOLTAGE FIELD EFFECT TRANSISTOR WITH LATERALLY EXTENDED GATE DIELECTRIC AND METHOD OF MAKING THEREOF
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Pub. No.: WO/2018/160239 International Application No.: PCT/US2017/062477
Publication Date: 07.09.2018 International Filing Date: 20.11.2017
IPC:
H01L 29/08 (2006.01) ,H01L 29/10 (2006.01) ,H01L 29/78 (2006.01) ,H01L 29/49 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29
Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having at least one potential-jump barrier or surface barrier; Capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof
02
Semiconductor bodies
06
characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
08
with semiconductor regions connected to an electrode carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29
Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having at least one potential-jump barrier or surface barrier; Capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof
02
Semiconductor bodies
06
characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
10
with semiconductor regions connected to an electrode not carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29
Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having at least one potential-jump barrier or surface barrier; Capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof
66
Types of semiconductor device
68
controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified, or switched
76
Unipolar devices
772
Field-effect transistors
78
with field effect produced by an insulated gate
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29
Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having at least one potential-jump barrier or surface barrier; Capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof
40
Electrodes
43
characterised by the materials of which they are formed
49
Metal-insulator semiconductor electrodes
Applicants:
SANDISK TECHNOLOGIES LLC [US/US]; 6900 North Dallas Parkway Suite 325 Plano, Texas 75024, US
Inventors:
CHOWDHURY, Murshed; US
LIN, Andrew; US
KAI, James; US
ZHANG, Yanli; US
ALSMEIER, Johann; US
Agent:
RADOMSKY, LEON; US
COHN, Joanna; US
CONNOR, David; US
GAYOSO, Tony; US
GEMMELL, Elizabeth; US
GILL, Matthew; US
GREGORY, Shaun; US
GUNNELS, Zarema; US
HANSEN, Robert; US
HUANG, Stephen; US
HYAMS, David; US
JOHNSON, Timothy; US
MAZAHERY, Benjamin; US
MURPHY, Timothy; US
NGUYEN, Jacqueline; US
O'BRIEN, Michelle; US
PARK, Byeongju; US
RUTT, Steven; US
SIMON, Phyllis; US
SULSKY, Martin; US
Priority Data:
15/444,72528.02.2017US
Title (EN) HIGH VOLTAGE FIELD EFFECT TRANSISTOR WITH LATERALLY EXTENDED GATE DIELECTRIC AND METHOD OF MAKING THEREOF
(FR) TRANSISTOR À EFFET DE CHAMP À HAUTE TENSION DOTÉ D'UN DIÉLECTRIQUE DE GRILLE À EXTENSION LATÉRALE ET SON PROCÉDÉ DE FABRICATION
Abstract:
(EN) A trench having a uniform depth is provided in an upper portion of a semiconductor substrate. A continuous dielectric material layer is formed, which includes a gate dielectric that fills an entire volume of the trench. A gate electrode is formed over the gate dielectric such that the gate electrode overlies a center portion of the gate dielectric and does not overlie a first peripheral portion and a second peripheral portion of the gate dielectric that are located on opposing sides of the center portion of the gate dielectric. After formation of a dielectric gate spacer, a source extension region and a drain extension region are formed within the semiconductor substrate by doping respective portions of the semiconductor substrate.
(FR) Dans la présente invention, une tranchée ayant une profondeur uniforme est disposée sur une partie supérieure d'un substrat semi-conducteur. Une couche de matériau diélectrique continue est formée, laquelle comprend un diélectrique de grille qui remplit un volume entier de la tranchée. Une électrode de grille est formée sur le diélectrique de grille de telle sorte que l'électrode de grille recouvre une partie centrale du diélectrique de grille et ne recouvre pas une première partie périphérique et une seconde partie périphérique du diélectrique de grille qui sont situées sur des côtés opposés de la partie centrale du diélectrique de grille. Après la formation d'un espaceur de grille diélectrique, une région d'extension de source et une région d'extension de drain sont formées à l'intérieur du substrat semi-conducteur par le dopage de parties respectives du substrat semi-conducteur.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)