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    • 81. 发明专利
    • Manufacture of semiconductor device
    • 半导体器件的制造
    • JPS5952847A
    • 1984-03-27
    • JP16552182
    • 1982-09-20
    • Mitsubishi Electric Corp
    • ITAKURA HIDEAKI
    • H01L21/76H01L21/316H01L21/762
    • H01L21/7621
    • PURPOSE:To enable to form a fine pattern by forming a groove surrounding the active region section of the semiconductor substrate, coating the side surface of a first thin-film coating the active region section and a section just under the thin-film with a third thin-film and forming an inter-element isolation region through thermal oxidation. CONSTITUTION:A first thin-film 12 is formed on the silicon semiconductor substrate 1, and first layer silicon nitride film 3 and underlay silicon oxide film 2 at a position where the isolation region is formed are removed. A polycrystalline silicon film 6 coating the whole surface of the substrate 1 and a molybdenum- silicide film 7 as a second thin-film 13 are formed. The U-shaped groove 8 is formed in the silicon semiconductor substrate 1 in the vicinity of a stepped difference section. The element isolation region is formed because a silicon oxide film 5 is formed selectively in the exposed region of the silicon semiconductor substrate 1 through thermal oxidation. The wall 10 of a remaining second layer silicon nitride film 9 and the first layer silicon nitride film 3 and underlay silicon oxide film 2 are removed in succession, and the surface of the silicon semiconductor substrate 1 is exposed.
    • 目的:为了通过形成围绕半导体衬底的有源区段的沟槽来形成精细图案,将第一薄膜的侧表面涂覆有活性区域部分和薄膜正下方的部分,第三薄膜 薄膜,并通过热氧化形成元件间隔离区域。 构成:在硅半导体衬底1上形成第一薄膜12,并且去除形成隔离区的位置上的第一层氮化硅膜3和底层氧化硅膜2。 形成涂覆基板1的整个表面的多晶硅膜6和作为第二薄膜13的硅化钼膜7。 U形槽8形成在硅半导体衬底1中,在阶梯差分区域附近。 由于通过热氧化在硅半导体衬底1的暴露区域中选择性地形成氧化硅膜5,所以形成元件隔离区。 剩余的第二层氮化硅膜9的壁10和第一层氮化硅膜3和底衬氧化硅膜2被连续地去除,并且硅半导体衬底1的表面被暴露。
    • 82. 发明专利
    • Oxide film separating semiconductor device
    • 氧化物膜分离半导体器件
    • JPS58216438A
    • 1983-12-16
    • JP10110782
    • 1982-06-10
    • Mitsubishi Electric Corp
    • HIGUCHI TETSUO
    • H01L29/73H01L21/316H01L21/331H01L21/76H01L21/762
    • H01L21/76216H01L21/7621
    • PURPOSE:To improve high frequency characteristic of a bipolar transistor by providing the n type semiconductors which are respectively placed in contact with the n type floating collectors of a pair of transistor forming regions isolated by an isolating oxide film and the p type channel cut layer which are held from both sides by these n type semiconductor layers and are placed in contact with them. CONSTITUTION:After forming an n type floating collector 2 on a p type Si substrate 1, a p type channel cut layer 5a is formed by diffusion or ion implantation in such a manner that it is not placed in contact with the n type floating collector 2. Thereafter, an n type Si epitaxial growth layer 3 is formed. In this case, distance between the p channel cut layer 5a and n type floating collector 2 should be as wide as allowing the n type Si layer 9 to remain between them even after the n type Si epitaxial growth layer 3 is formed. Thereafter, an isolation oxide film 4 is formed with the CVD nitride film 7 used as the mask and the n type Si layer 9 is left in both ends of the p type channel cut layer 5a just under such isolation oxide film 4.
    • 目的:通过提供分别与通过隔离氧化膜隔离的一对晶体管形成区域的n +型浮动集电极接触的n +型半导体来改善双极晶体管的高频特性,并且 p +型沟道切割层,由这些n +型半导体层从两侧保持并与它们接触。 构成:在p型Si衬底1上形成n +型浮动集电器2之后,通过扩散或离子注入形成ap +型沟道切割层5a,使得其不被接触 与n +型浮动集电极2。此后,形成n +型Si外延生长层3。 在这种情况下,p +沟道切割层5a和n +型浮动集电极2之间的距离应该与允许n +型Si层9保持在它们之间的距离宽,即使在n + 形成Si外延生长层3。 此后,用CVD氮化膜7作为掩模形成隔离氧化膜4,并且n +型Si层9留在正在这种隔离氧化物的p +型沟道切割层5a的两端 电影4。
    • 83. 发明专利
    • Manufacture of semiconductor device
    • 半导体器件的制造
    • JPS58184739A
    • 1983-10-28
    • JP6778782
    • 1982-04-22
    • Nec Corp
    • TAKADA TOSHIAKI
    • H01L21/76H01L21/316H01L21/762
    • H01L21/7621
    • PURPOSE:To reduce bird beaks to encroach upon the element region of a semiconductor device by a method wherein after silicon at regions removed with an oxidation resistive coating is removed at proper depth, oxidation is performed to the inner sides from the coating pattern of the small coating using the small coating as the mask. CONSTITUTION:After an oxide film 32 and an oxidation resistive coating 33 are formed on a silicon substrate 31, thermal oxide films 34 and an oxide film 35 are formed. The oxide films 34, 35 are etched using a photo resist 36 smaller than the coating 33 as the mask, and the photo resist 36 is peeled off. The oxidation resistive coating 33 is etched using the remaining oxide film 35 as the mask, and selective oxidation is performed using the remaining coating 37 as the mask to form oxide films 38. When the selective oxide films are formed by this way, stress to be generated when second time oxidation is performed is mitigated, and the semiconductor device containing no crystal defect and having no reduction of carrier mobility can be offered.
    • 目的:通过以下方法减少鸟喙以侵入半导体器件的元件区域,其中在适当深度处除去具有氧化电阻涂层的区域中的硅之后,从小的涂层图案向内侧进行氧化 使用小涂层作为掩模涂层。 构成:在硅衬底31上形成氧化膜32和氧化电阻涂层33之后,形成热氧化膜34和氧化物膜35。 使用小于作为掩模的涂层33的光致抗蚀剂36来蚀刻氧化物膜34,35,并且剥离光致抗蚀剂36。 使用剩余的氧化膜35作为掩模来蚀刻氧化电阻涂层33,并且使用剩余的涂层37作为掩模进行选择性氧化以形成氧化膜38.当通过这种方式形成选择性氧化物膜时,应力为 可以减轻第二时间氧化时产生的半导体器件,并且可以提供不含晶体缺陷并且不降低载流子迁移率的半导体器件。
    • 85. 发明申请
    • SEMICONDUCTOR DEVICE
    • 半导体器件
    • US20160240639A1
    • 2016-08-18
    • US15016258
    • 2016-02-04
    • Changzhou ZhongMin Semi-Tech Co. Ltd.
    • Yuzhu Li
    • H01L29/739H01L29/08H01L29/10
    • H01L29/7397H01L21/02164H01L21/0217H01L21/02236H01L21/02238H01L21/02255H01L21/0475H01L21/30604H01L21/3081H01L21/3086H01L21/31111H01L21/7602H01L21/7621H01L23/53271H01L29/0696H01L29/0804H01L29/0821H01L29/1095H01L29/16H01L29/1608H01L29/2003H01L29/4236H01L29/4916
    • A semiconductor device includes: metal collector layer on backside, P-type collector layer, N-type field stop layer, N-drift layer and N-type CS layer within the N-drift layer near the top side. Multiple trench structures are formed by polysilicon core and gate oxide layer near the front side. There are active cells and plugged cells on top of the device. The polysilicon cores of the trenches in the active cells are connected to the gate electrode, and the polysilicon cores of the trenches in the plugged cells are connected to the emitter electrode. There are N+ region and P+ region in active cells, and they are connected to metal emitter layer through the window in the insulation layer. There are P-well regions in both active cells and plugged cells. The P-well regions in active cells are continuous and connected to emitter electrode through P+ region. The P-well regions in plugged cells are divided by N-drift layer, forming discontinuous P-type regions along the direction of trenches. And each P-well region in plugged cells is either electrically floating or connected to the emitter electrode.
    • 半导体器件包括:靠近顶侧的N漂移层内侧的金属集电体层,P型集电极层,N型场阻挡层,N漂移层和N型CS层。 多个沟槽结构由靠近正面的多晶硅核心和栅极氧化物层形成。 设备顶部有活动单元格和插入单元格。 有源电池中的沟槽的多晶硅核心连接到栅电极,并且封装单元中的沟槽的多晶硅核心连接到发射极电极。 有源电池中存在N +区和P +区,并通过绝缘层中的窗口连接到金属发射极层。 活性细胞和封闭细胞中都有P阱区。 活性电池中的P阱区是连续的,并通过P +区连接到发射极。 堵塞单元中的P阱区域被N漂移层划分,沿沟槽方向形成不连续的P型区域。 并且堵塞电池中的每个P阱区域电浮置或连接到发射极电极。