Abstract:
PROBLEM TO BE SOLVED: To form a threshold adjusting implant located only under a channel, by implanting a threshold adjusting dopant through a gate hole or a punch- through adjusting dopant after defining the gate hole on a dielectric stack. SOLUTION: After defining a gate hole 40 in a dielectric stack, either a threshold adjusting dopant or a punch-through dopant is implanted through the hole 40. Since the hole 40 allows the dopant to reach only a region just under the hole 40, the implantation of the dopant is effected by an accurately controlled method. The dimensions and shape of the hole 40 determine the dimensions and shape of the threshold adjusting implant. Therefore, the threshold adjusting implant located only under a channel can be formed. COPYRIGHT: (C)1999,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor structure for use in n-type and p-type MOSFET devices, and the method of manufacturing the same. SOLUTION: A semiconductor structure is formed such that the layer structure of a wafer region by which an n-type MOSFET is manufactured is different from the layer structure of a wafer region by which a p-type MOSFET is manufactured. First, the structure is manufactured by forming a damage region on the front surface of an Si content substrate by ion implantation of a light atom such as He. Then, strained SiGe alloy is formed on the Si content substrate comprising the damage region. Then, the strained SiGe alloy is made to ease substantially by strained relaxation resulting from defect using an anneal step. Then, a strained semiconductor cap of strained Si etc. is formed on the strained SiGe alloy. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an integrated semiconductor circuit including at least one FinFET device and at least one planer single-gate FET device on a same SOI semiconductor substrate. SOLUTION: The integrated semiconductor circuit includes a FinFET and a planer single-gate FET located on an embedded insulating layer of a silicon-on-insulator (SOI) substrate. The planer single FET is located on a surface of a patterned top semiconductor layer of the SOI substrate; and the FinFET has a vertical channel perpendicular to the planer single-gate FET. In a method for forming such an integrated circuit, when width of the FinFET active device region is trimmed, a formed resist image and a patterned hard mask are used, and after that the formed resist image and etching are used when thickness of the FET device region is reduced. The trimmed active FinFET device region is formed such that it is perpendicular to the planer single-gate FET device region whose thickness has been reduced. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To pattern a silicon nitride layer so that it has a high aspect ratio by etching an exposed part of the silicon nitride layer with a high density plasma generated by exciting an etchant gas which includes a polymerizing agent, a source of hydrogen, an oxidant, and a noble gas diluent, to form a trench. SOLUTION: An etchant gas includes a polymerizing agent, a source of hydrogen, an oxidant, and a noble gas diluent. The polymerizing agent is a precursor for causing formation of passivation layer and is preferably selected from among CF4, C2F6, and C3F8. The source of hydrogen is preferably selected from among CHF3, CH2F2, CH3F, and H2, and the oxidant is selected among CO, CO2, and O2. This etchant gas is excited to generate a high density plasma. A part of a silicon nitride layer 131 is exposed by an etch window 133 to etch the exposed part of the silicon nitride layer 131 with the plasma, to form a trench which extends to a silicon oxide layer.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a super-steep retrograde well field effect transistor device, and to provide an ultra-thin body FET device manufactured by the same. SOLUTION: The method for manufacturing a super-steep retrograde well field effect transistor device starts with an SOI layer formed on a substrate, for example, an embedded oxide layer. The SOI layer is thinned so as to form an ultra-thin SOI layer. A separation trench is formed for dividing the SOI layer into an N ground layer region and a P ground layer region. The N and P ground layer regions formed in the SOI layer are doped with N-type and P-type dopants to a high concentration level. A semiconductor channel region is formed on the N and P ground layer regions. The source region and the drain region of the FET and the gate electrode stack on the channel region are formed. As desired, a diffusion retarding layer is formed between the SOI ground layer regions and the channel regions. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a high performance (surface channel) CMOS device provided with a mid gap work function metal gate. SOLUTION: An epitaxial layer is used for adjustment/reduction of a threshold voltage V t of PFET region and large amount of reduction in V t (up to 500 mV) which are required by a CMOS device provided with a mid gap metal gate. In this case, the counter doping using an in-site B (boron) doped epitaxial layer or B and C (carbon) codoped epitaxial layer is provided. Here, the doping of C is important to give a surface channel CMOS device provided with the mid gap metal gate while an excellent short channel effect is maintained by holding the shallow B profile through the additional degree of freedom to relaxing the diffusion of B (even in the case of the subsequent activation heat cycle). COPYRIGHT: (C)2004,JPO
Abstract translation:要解决的问题:提供一种具有中间间隙功能金属栅极的高性能(表面通道)CMOS器件。 解决方案:使用外延层来调整/降低PFET区域的阈值电压V t SB>,并且V T SB>的大量还原(高达500mV ),这是由设置有中间间隙金属栅极的CMOS器件所需要的。 在这种情况下,提供使用现场B(硼)掺杂外延层或B和C(碳)共掺杂外延层的反掺杂。 这里,C的掺杂对于提供具有中间间隙金属栅极的表面沟道CMOS器件而言是重要的,同时通过保持浅的B分布通过附加的自由度来放宽B的扩散(甚至 在随后的活化热循环的情况下)。 版权所有(C)2004,JPO