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Chih Chieh Yeh, Taipei City TW

Chih Chieh Yeh, Taipei City TW

Patent application numberDescriptionPublished
20080285350Circuit and method for a three dimensional non-volatile memory - An architecture, circuit and method for providing a very dense, producible, non volatile FLASH memory with SONOS cells. Preferred SONOS memory cells are formed using a uniformly doped channel region. A FinFET embodiment and a planar FD-SOI embodiment cell are disclosed. Because the novel SONOS cells do not rely on diffused regions, the cells may be formed into a three dimensional array of cells without diffusion problems from subsequent thermal processing steps. FLASH memory arrays are formed by forming layers of NAND Flash cells in the local interconnect layers of an integrated circuit, with the metal layers forming the global bit line conductors. The three dimensional non volatile arrays formed of the SONOS cells rely on conventional semiconductor processing and so are easily integrated with other circuitry to form an ASIC or SoC device. P-channel and n-channel devices may be used to form the SONOS non-volatile cells.11-20-2008
20090080254Gated Diode Nonvolatile Memory Cell Array - A memory integrated circuit has memory arrays that are vertically layered. These memory arrays include word lines and bit lines. Intersections between the word lines and the bit lines include a diode and a memory state storage element. The diode and the memory storage element are connected in between a word line and a bit line. The diode at the intersections includes a first diode node and a second diode node. Various aspects of the memory integrated circuit are electrically interconnected in various ways, such as corresponding word lines, corresponding first diode nodes, or corresponding second diode nodes of different memory arrays being electrically interconnected. Various aspects of the memory integrated circuit are isolated in various ways, such as word lines, first diode nodes, or second diode nodes of different memory arrays being isolated.03-26-2009
20100072553METAL GATE STRESS FILM FOR MOBILITY ENHANCEMENT IN FinFET DEVICE - A CMOS FinFET semiconductor device provides an NMOS FinFET device that includes a compressive stress metal gate layer over semiconductor fins and a PMOS FinFET device that includes a tensile stress metal gate layer over semiconductor fins. A process for forming the same includes a selective annealing process that selectively converts a compressive metal gate film formed over the PMOS device to the tensile stress metal gate film.03-25-2010
20110024804METHOD FOR FORMING HIGH GERMANIUM CONCENTRATION SIGE STRESSOR - A method for producing a SiGe stressor with high Ge concentration is provided. The method includes providing a semiconductor substrate with a source area, a drain area, and a channel in between; depositing the first SiGe film layer on the source area and/or the drain area; performing a low temperature thermal oxidation, e.g., a high water vapor pressure wet oxidation, to form an oxide layer at the top of the first SiGe layer and to form the second SiGe film layer with high Ge percentage at the bottom of the first SiGe film layer without Ge diffusion into the semiconductor substrate; performing a thermal diffusion to form the SiGe stressor from the second SiGe film layer, wherein the SiGe stressor provides uniaxial compressive strain on the channel; and removing the oxide layer. A Si cap layer can be deposited on the first SiGe film layer prior to performing oxidation.02-03-2011
20110049613ACCUMULATION TYPE FINFET, CIRCUITS AND FABRICATION METHOD THEREOF - A FinFET includes a substrate and a fin structure on the substrate. The fin structure includes a channel between a source and a drain, wherein the source, the drain, and the channel have the first type dopant. The channel includes a Ge, SiGe, or III-V semiconductor. A gate dielectric layer is located over the channel and a gate is located over the gate dielectric layer.03-03-2011
20110068407Germanium FinFETs with Metal Gates and Stressors - An integrated circuit structure includes an n-type fin field effect transistor (FinFET) and a p-type FinFET. The n-type FinFET includes a first germanium fin over a substrate; a first gate dielectric on a top surface and sidewalls of the first germanium fin; and a first gate electrode on the first gate dielectric. The p-type FinFET includes a second germanium fin over the substrate; a second gate dielectric on a top surface and sidewalls of the second germanium fin; and a second gate electrode on the second gate dielectric. The first gate electrode and the second gate electrode are formed of a same material having a work function close to an intrinsic energy level of germanium.03-24-2011
20110079829FINFETS AND METHODS FOR FORMING THE SAME - A Fin field effect transistor (FinFET) includes a fin-channel body over a substrate. A gate electrode is disposed over the fin-channel body. At least one source/drain (S/D) region is disposed adjacent to the fin-channel body. The at least one S/D region is substantially free from including any fin structure.04-07-2011
20110095378FinFET Design with Reduced Current Crowding - An integrated circuit structure includes a substrate and a fin field-effect transistor (FinFET). The FinFET includes a fin over the substrate and having a first fin portion and a second fin portion. A gate stack is formed on a top surface and sidewalls of the first fin portion. An epitaxial semiconductor layer has a first portion formed directly over the second fin portion, and a second portion formed on sidewalls of the second fin portion. A silicide layer is formed on the epitaxial semiconductor layer. A peripheral ratio of a total length of an effective silicide peripheral of the FinFET to a total length of a fin peripheral of the FinFET is greater than 1.04-28-2011
20110117679SACRIFICIAL OFFSET PROTECTION FILM FOR A FINFET DEVICE - A method for fabricating a semiconductor device is disclosed. An exemplary embodiment of the method includes providing a substrate; forming a fin structure over the substrate; forming a gate structure, wherein the gate structure overlies a portion of the fin structure; forming a sacrificial-offset-protection layer over another portion of the fin structure; and thereafter performing an implantation process.05-19-2011
20110133292FinFETs with Multiple Fin Heights - An integrated circuit structure includes a semiconductor substrate, and a FinFET over the semiconductor substrate. The FinFET includes a semiconductor fin; a gate dielectric on a top surface and sidewalls of the semiconductor fin; a gate electrode on the gate dielectric; and a source/drain region at an end of the semiconductor fin. A first pair of shallow trench isolation (STI) regions includes portions directly underlying portions of the source/drain regions, wherein the first pair of STI regions is separated by, and adjoining a semiconductor strip. The first pair of STI regions further has first top surfaces. A second pair of STI regions comprises portions directly underlying the gate electrode, wherein the second pair of STI regions is separated from each other by, and adjoining, the semiconductor strip. The second pair of STI regions has second top surfaces higher than the first top surfaces.06-09-2011

Patent applications by Chih Chieh Yeh, Taipei City TW