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1. (EP2779247) High electron mobility semiconductor device and manufacturing method therefor

Office : European Patent Office
Application Number: 14159886 Application Date: 14.03.2014
Publication Number: 2779247 Publication Date: 17.09.2014
Publication Kind : A3
Designated States: AL, AT, BA, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
IPC:
H01L 29/778
H01L 21/338
H01L 29/04
H01L 29/06
H01L 29/20
H01L 29/205
H01L 29/40
H01L 29/417
H01L 29/423
H01L 29/872
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
778
with two-dimensional charge carrier gas channel, e.g. HEMT
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
21
Processes or apparatus specially adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
02
Manufacture or treatment of semiconductor devices or of parts thereof
04
the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer, carrier concentration layer
18
the devices having semiconductor bodies comprising elements of the fourth group of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
334
Multistep processes for the manufacture of devices of the unipolar type
335
Field-effect transistors
338
with a Schottky 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
02
Semiconductor bodies
04
characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
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
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
12
characterised by the materials of which they are formed
20
including, apart from doping materials or other impurities, only AIIIBV compounds
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
12
characterised by the materials of which they are formed
20
including, apart from doping materials or other impurities, only AIIIBV compounds
201
including two or more compounds
205
in different semiconductor regions
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
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
41
characterised by their shape, relative sizes or dispositions
417
carrying the current to be rectified, amplified or switched
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
41
characterised by their shape, relative sizes or dispositions
423
not carrying the current to be rectified, amplified or switched
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
86
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
861
Diodes
872
Schottky diodes
CPC:
H01L 29/7783
H01L 21/845
H01L 27/0688
H01L 27/0886
H01L 27/1211
H01L 29/045
H01L 29/0615
H01L 29/0657
H01L 29/2003
H01L 29/205
H01L 29/402
H01L 29/404
H01L 29/407
H01L 29/4175
H01L 29/41791
H01L 29/42316
H01L 29/4236
H01L 29/42376
H01L 29/66431
H01L 29/66462
H01L 29/66795
H01L 29/778
H01L 29/7786
H01L 29/7787
H01L 29/7789
H01L 29/785
H01L 29/872
Applicants: SEMICONDUCTOR COMPONENTS IND LLC
Inventors: PADMANABHAN BALAJI
VENKATRAMAN PRASAD
PARSEY JR JOHN
SALIH ALI
Priority Data: 201361786570 15.03.2013 US
201414203299 10.03.2014 US
Title: (DE) Halbleiterbauelement mit hoher Elektronenbeweglichkeit und Herstellungsverfahren dafür
(EN) High electron mobility semiconductor device and manufacturing method therefor
(FR) Dispositif semi-conducteur à haute mobilité d'électrons et procédé de fabrication associé
Abstract: front page image
(EN) In one embodiment, Group III-nitride materials are used to form a semiconductor device. A fin structure is formed in the Group III-nitride material, and a gate structure (27), source electrodes (36) and drain electrodes (37) are formed in spaced relationship to the fin structure. The fin structure provides both polar and semi-polar 2DEG regions. In one embodiment, the gate structure is configured to control current flow in the polar 2DEG region. Shield conductor layers (38) are included above the gate structure and in spaced relationship with drain regions of the semiconductor device.