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    • 3. 发明授权
    • Method for patterning sub-lithographic features in semiconductor manufacturing
    • 在半导体制造中图案化亚光刻特征的方法
    • US07300883B2
    • 2007-11-27
    • US10930228
    • 2004-08-31
    • Francis G. CeliiBrian A. SmithJames BlatchfordRobert Kraft
    • Francis G. CeliiBrian A. SmithJames BlatchfordRobert Kraft
    • H01L21/336H01L21/302H01L21/461H01L21/31H01L21/469
    • H01L21/28123H01L21/0337H01L21/0338H01L21/32139
    • A method of forming a gate electrode (24′) for a metal-oxide-semiconductor (MOS) integrated circuit is disclosed. A hardmask layer (26), for example formed of silicon-rich nitride, is deposited over a polysilicon layer (24) from which the gate electrode (24′) is to be formed. An anti-reflective coating, or bottom anti-reflective coating or BARC, layer (29) is then formed over the hardmask layer (26), and photoresist (30) is photolithographically patterned to define the pattern of the gate electrode (24′), although to a wider, photolithographic, width (LW). The pattern is transferred from the photoresist (30) to the BARC layer (29). The remaining elements of the BARC layer (29) are then trimmed, preferably by a timed isotropic etch, to a sub-lithographic width (SW). This pattern is then transferred to the hardmask layer (26) by an anisotropic etch of that layer, using the trimmed BARC elements (29) as a mask. The hardmask layer elements (26′) then mask the etch of the underlying polysilicon layer (24), to define the gate electrodes (24′), having gate widths that are narrower than the minimum dimension available through photolithography.
    • 公开了一种形成用于金属氧化物半导体(MOS)集成电路的栅电极(24')的方法。 例如由富含硅的氮化物形成的硬掩模层(26)沉积在要形成栅电极(24')的多晶硅层(24)上。 然后在硬掩模层(26)上形成抗反射涂层或底部抗反射涂层或BARC层(29),光刻图案化光致抗蚀剂(30)以限定栅电极(24')的图案, ,尽管对于更宽的光刻宽度(LW)。 图案从光致抗蚀剂(30)转移到BARC层(29)。 然后将BARC层(29)的其余元件优选地通过定时各向同性蚀刻修整到亚光刻宽度(SW)。 然后通过该层的各向异性蚀刻,使用修剪的BARC元件(29)作为掩模将该图案转移到硬掩模层(26)。 硬掩模层元件(26')然后掩蔽下面的多晶硅层(24)的蚀刻,以限定栅电极(24'),栅极宽度比通过光刻可用的最小尺寸窄。
    • 5. 发明授权
    • Semiconductor surface measurement system and method
    • 半导体表面测量系统及方法
    • US5956148A
    • 1999-09-21
    • US989904
    • 1997-12-12
    • Francis G. Celii
    • Francis G. Celii
    • G01B11/06G01J4/00
    • G01B11/0641
    • A semiconductor surface measurement system (100) is disclosed. In this system, a plurality of wafers (106), each having an exposed surface, are held by a wafer positioning system (104), which sequentially moves the wafers into a measurement zone. A wafer position detection system (124) detects the position of a selected wafer, and generates an output signal indicating the position of the selected wafer. A surface measurement apparatus (114 through 121, 130 through 142) measures a property of the exposed surface of the selected wafer (106) in response to the output signal of the wafer position detection system (124) when the selected wafer is in the measurement zone. The disclosed surface measurement system (100)may be used to gather real-time data concerning surface properties such as composition, roughness and epilayer thickness during multi-wafer semiconductor processing.
    • 公开了半导体表面测量系统(100)。 在该系统中,每个具有暴露表面的多个晶片(106)由晶片定位系统(104)保持,晶片定位系统(104)将晶片顺序地移动到测量区域中。 晶片位置检测系统(124)检测所选晶片的位置,并产生指示所选晶片的位置的输出信号。 当所选晶片处于测量状态时,表面测量装置(114至121,130至142)响应于晶片位置检测系统(124)的输出信号测量所选晶片(106)的暴露表面的性质 区。 公开的表面测量系统(100)可以用于收集关于多晶片半导体处理期间的表面特性(例如组成,粗糙度和外延层厚度)的实时数据。