摘要:
A semiconductor device includes a gate stack; an air-gap under the gate stack; a semiconductor layer vertically between the gate stack and the air-gap; and a first dielectric layer underlying and adjoining the semiconductor layer. The first dielectric layer is exposed to the air-gap.
摘要:
The disclosure relates to a Fin field effect transistor (FinFET). An exemplary structure for a FinFET comprises a substrate comprising a top surface; a first fin and a second fin extending above the substrate top surface, wherein each of the fins has a top surface and sidewalls; an insulation layer between the first and second fins extending part way up the fins from the substrate top surface; a first gate dielectric covering the top surface and sidewalls of the first fin having a first thickness and a second gate dielectric covering the top surface and sidewalls of the second fin having a second thickness less than the first thickness; and a conductive gate strip traversing over both the first gate dielectric and second gate dielectric.
摘要:
Methods for forming a single fin fin-like field effect transistor (FinFET) device are disclosed. An exemplary method includes providing a main mask layout and a trim mask layout to form fins of a fin-like field effect transistor (FinFET) device, wherein the main mask layout includes a first masking feature and the trim mask layout includes a second masking feature that defines at least two fins, the first masking feature and the second masking feature having a spatial relationship; and modifying the main mask layout based on the spatial relationship between the first masking feature and the second masking feature, wherein the modifying the main mask layout includes modifying the first masking feature such that a single fin FinFET device is formed using the modified main mask layout and the trim mask layout.
摘要:
A method for generating a layout for a device having FinFETs from a first layout for a device having planar transistors is disclosed. The planar layout is analyzed and corresponding FinFET structures are generated in a matching fashion. The resulting FinFET structures are then optimized. Dummy patterns and a new metal layer may be generated before the FinFET layout is verified and outputted.
摘要:
A method includes providing a plurality of semiconductor fins parallel to each other, and includes two edge fins and a center fin between the two edge fins. A middle portion of each of the two edge fins is etched, and the center fin is not etched. A gate dielectric is formed on a top surface and sidewalls of the center fin. A gate electrode is formed over the gate dielectric. The end portions of the two edge fins and end portions of the center fin are recessed. An epitaxy is performed to form an epitaxy region, wherein an epitaxy material grown from spaces left by the end portions of the two edge fins are merged with an epitaxy material grown from a space left by the end portions of the center fin to form the epitaxy region. A source/drain region is formed in the epitaxy region.
摘要:
A method for generating a layout for a FinFET device is disclosed. The method includes receiving an initial layout containing an active region that has an edge extending in a first direction. The method includes designating a portion of the layout as a first region. The first region contains the active region. The method includes designating an elongate portion of the first region as a second region that extends in the first direction. The method includes designating a different elongate portion of the first region as a third region that extends in the first direction and that is adjacent to the second region in a second direction perpendicular to the first direction. The method includes enlarging the active region if the edge of the active region falls inside the third region, and shrinking the active region if the edge of the active region falls outside the third region.
摘要:
A method for generating a layout for a semiconductor device is disclosed. The method includes: receiving a first layout. A portion of the first layout is defined as a first FinFET region. The first FinFET region has first and second sides that each extend approximately in a first direction. The method includes performing a first design rule check (DRC) simulation. The method includes obtaining a first DRC simulation result. The method includes defining a second FinFET region by moving the first side in a second direction perpendicular to the first direction. The method includes performing a second DRC simulation. The method includes obtaining a second DRC simulation result. The method includes selecting one of the first and second FinFET regions based on the first and second DRC simulation results. The method includes generating a second layout using the selected FinFET region.
摘要:
A method for forming a high-voltage drain metal-oxide-semiconductor (HVD-MOS) device includes providing a semiconductor substrate; forming a well region of a first conductivity type; and forming an embedded well region in the semiconductor substrate and only on a drain side of the HVD-MOS device, wherein the embedded region is of a second conductivity type opposite the first conductivity type. The step of forming the embedded well region includes simultaneously doping the embedded well region and a well region of a core regular MOS device, and simultaneously doping the embedded well region and a well region of an I/O regular MOS device, wherein the core and I/O regular MOS devices are of the first conductivity type. The method further includes forming a gate stack extending from over the embedded well region to over the well region.
摘要翻译:一种用于形成高电压漏极金属氧化物半导体(HVD-MOS)器件的方法包括:提供半导体衬底; 形成第一导电类型的阱区; 以及在所述半导体衬底中并且仅在所述HVD-MOS器件的漏极侧上形成嵌入阱区域,其中所述嵌入区域是与所述第一导电类型相反的第二导电类型。 形成嵌入阱区的步骤包括同时掺杂嵌入阱区和芯规则MOS器件的阱区,并同时掺杂I / O规则MOS器件的嵌入阱区和阱区,其中核和 I / O常规MOS器件是第一导电类型。 所述方法还包括形成从所述嵌入阱区域上方延伸到所述阱区域的栅极堆叠。
摘要:
A liquid crystal display (LCD) panel includes a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer sandwiched between the first and second substrates. The first substrate includes a first wide view film and the second substrate includes a second wide view film. Angles of the first wide film, second wide film, and twist angles of liquid crystal molecules of the liquid crystal layer are defined.
摘要:
An exemplary LCD (200) includes gate lines (23), data lines (24); a gradation voltage adjusting circuit (26) for receiving the gradation voltages respectively corresponding to the j, j+1, k, and k+1 frames interchanging the j+1 frame gradation voltage and the k frame gradation voltage when a first voltage difference between j frame gradation voltage and j+1 frame gradation voltage is less than a second voltage difference between j frame gradation voltage and k frame gradation voltage; a memory circuit (28) for storing the gradation voltages corresponding to the frames 1, 2, . . . j, j+2, . . . k−1, k+1 . . . h and storing the interchanged gradation voltages corresponding to the frames j+1 and k; and a gate driver (21) for receiving the gradation voltages stored in the memory circuit. A smallest rectangular area formed by any two adjacent gate lines together with any two adjacent data lines defines a pixel unit thereat.