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1. CN110634825 - Semiconductor device

官庁 中華人民共和国
出願番号 201910879948.1
出願日 26.11.2014
公開番号 110634825
公開日 31.12.2019
公報種別 A
IPC
H01L 23/482
H電気
01基本的電気素子
L半導体装置,他に属さない電気的固体装置
23半導体または他の固体装置の細部
48動作中の固体本体からまたは固体本体へ電流を導く装置,例.リードまたは端子装置
482半導体本体に分離できないように適用された引込み層からなるもの
H01L 25/16
H電気
01基本的電気素子
L半導体装置,他に属さない電気的固体装置
25複数の個々の半導体または他の固体装置からなる組立体
16装置がH01L27/00~H01L51/00の2つ以上の異なるメイングループに分類される型からなるもの,例.ハイブリッド回路の形成
CPC
H01L 29/0615
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or 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; ; Multistep manufacturing processes therefor
02Semiconductor bodies ; ; Multistep manufacturing processes therefor
06characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; ; characterised by the concentration or distribution of impurities within semiconductor regions
0603characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
0607for preventing surface leakage or controlling electric field concentration
0611for increasing or controlling the breakdown voltage of reverse biased devices
0615by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
H01L 29/0696
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or 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; ; Multistep manufacturing processes therefor
02Semiconductor bodies ; ; Multistep manufacturing processes therefor
06characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; ; characterised by the concentration or distribution of impurities within semiconductor regions
0684characterised by the shape, relative sizes or dispositions of the semiconductor regions or junctions between the regions
0692Surface layout
0696of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
H01L 29/1095
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or 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; ; Multistep manufacturing processes therefor
02Semiconductor bodies ; ; Multistep manufacturing processes therefor
06characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; ; characterised by the concentration or distribution of impurities within semiconductor regions
10with 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
1095Body region, i.e. base region, of DMOS transistors or IGBTs
H01L 29/1608
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or 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; ; Multistep manufacturing processes therefor
02Semiconductor bodies ; ; Multistep manufacturing processes therefor
12characterised by the materials of which they are formed
16including, apart from doping materials or other impurities, only elements of Group IV of the Periodic System
1608Silicon carbide
H01L 29/42372
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or 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; ; Multistep manufacturing processes therefor
40Electrodes ; ; Multistep manufacturing processes therefor
41characterised by their shape, relative sizes or dispositions
423not carrying the current to be rectified, amplified or switched
42312Gate electrodes for field effect devices
42316for field-effect transistors
4232with insulated gate
42372characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out
H01L 29/4238
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
29Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or 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; ; Multistep manufacturing processes therefor
40Electrodes ; ; Multistep manufacturing processes therefor
41characterised by their shape, relative sizes or dispositions
423not carrying the current to be rectified, amplified or switched
42312Gate electrodes for field effect devices
42316for field-effect transistors
4232with insulated gate
42372characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out
4238characterised by the surface lay-out
出願人 ROHM CO., LTD.
罗姆股份有限公司
発明者 NAGAO KATSUHISA
长尾胜久
KAWAMOTO NORIAKI
川本典明
代理人 中国专利代理(香港)有限公司 72001
優先権情報 2013-246474 28.11.2013 JP
発明の名称
(EN) Semiconductor device
(ZH) 半导体装置
要約
(EN)
A semiconductor device (1) is manufactured which includes a SiC epitaxial layer (28), a plurality of transistor cells (18) that are formed in the SiC epitaxial layer (28) and that are subjected to ON/OFF control by a predetermined control voltage, a gate electrode (19) that faces a channel region (32) of the transistor cells (18) in which a channel is formed when the semiconductor device (1) is inan ON state, a gate metal (44) that is exposed at the topmost surface for electrical connection with the outside and that is electrically connected to the gate electrode (19) while being physically separated from the gate electrode (19), and a built-in resistor (21) that is made of polysilicon and that is disposed below the gate metal (44) so as to electrically connect the gate metal (44) and thegate electrode (19) together.

(ZH)
形成半导体装置(1),所述半导体装置包含:SiC外延层(28);多个晶体管单元(18),形成于SiC外延层(28),通过规定的控制电压接通/关断控制;栅极电极(19),与在接通时形成沟道的晶体管单元(18)的沟道区域(32)相对;栅极金属(44),为了与外部的电连接而露出到最外层表面,与栅极电极(19)在物理上分离,但是,电连接于栅极电极(19);以及内置电阻(21),被配置在栅极金属(44)的下方,由将栅极金属(44)和栅极电极(19)电连接的多晶硅构成。