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Chung Long Cheng

Chung Long Cheng, Hsin-Chu TW

Patent application numberDescriptionPublished
20080258228Contact Scheme for MOSFETs - A semiconductor structure and methods of forming the same are provided. The semiconductor structure includes a semiconductor substrate; a first inter-layer dielectric (ILD) over the semiconductor substrate; a contact extending from a top surface of the first ILD into the first ILD; a second ILD over the first ILD; a bottom inter-metal dielectric (IMD) over the second ILD; and a dual damascene structure comprising a metal line in the IMD and a via in the second ILD, wherein the via is connected to the contact.10-23-2008
200802634923-Dimensional Device Design Layout - A method for defining a layout of 3-D devices, such as a finFET, is provided. The method includes determining an area required by a desired 3-D device and designing a circuit using planar devices having an equivalent area. The planar device corresponding to the desired 3-D device is used to layout a circuit design, thereby allowing circuit and layout designers to work at a higher level without the need to specify each individual fin or 3-D structure. Thereafter, the planar design may be converted to a 3-D design by replacing planar active areas with 3-D devices occupying an equivalent area.10-23-2008
20080296691Layout methods of integrated circuits having unit MOS devices - A semiconductor structure includes an array of unit metal-oxide-semiconductor (MOS) devices arranged in a plurality of rows and a plurality of columns is provided. Each of the unit MOS devices includes an active region laid out in a row direction and a gate electrode laid out in a column direction. The semiconductor structure further includes a first unit MOS device in the array and a second unit MOS device in the array, wherein active regions of the first and the second unit MOS devices have different conductivity types.12-04-2008
20080315320Semiconductor Device with both I/O and Core Components and Method of Fabricating Same - A semiconductor device having a core device with a high-k gate dielectric and an I/O device with a silicon dioxide or other non-high-k gate dielectric, and a method of fabricating such a device. A core well and an I/O well are created in a semiconductor substrate and separated by an isolation structure. An I/O device is formed over the I/O well and has a silicon dioxide or a low-k gate dielectric. A resistor may be formed on an isolation structure adjacent to the core well. A core-well device such as a transistor is formed over the core well, and has a high-k gate dielectric. In some embodiments, a p-type I/O well and an n-type I/O well are created. In a preferred embodiment, the I/O device or devices are formed prior to forming the core device and protected with a sacrificial layer until the core device is fabricated.12-25-2008
20090273055Fuse Structure - An electrical fuse and a method of forming the same are presented. A first-layer conductive line is formed over a base material. A via is formed over the first-layer conductive line. The via preferably comprises a barrier layer and a conductive material. A second-layer conductive line is formed over the via. A first external pad is formed coupling to the first-layer conductive line. A second external pad is formed coupling to the second-layer conductive line. The via, the first conductive line and the second conductive line are adapted to be an electrical fuse. The electrical fuse can be burned out by applying a current. The vertical structure of the preferred embodiment is suitable to be formed in any layer.11-05-2009
20110076813Semiconductor Device with both I/O and Core Components and Method of Fabricating Same - A semiconductor device having a core device with a high-k gate dielectric and an I/O device with a silicon dioxide or other non-high-k gate dielectric, and a method of fabricating such a device. A core well and an I/O well are created in a semiconductor substrate and separated by an isolation structure. An I/O device is formed over the I/O well and has a silicon dioxide or a low-k gate dielectric. A resistor may be formed on an isolation structure adjacent to the core well. A core-well device such as a transistor is formed over the core well, and has a high-k gate dielectric. In some embodiments, a p-type I/O well and an n-type I/O well are created. In a preferred embodiment, the I/O device or devices are formed prior to forming the core device and protected with a sacrificial layer until the core device is fabricated.03-31-2011

Patent applications by Chung Long Cheng, Hsin-Chu TW

Chung Long Cheng, Hsinchu County TW

Patent application numberDescriptionPublished
20100087043HYBRID SHALLOW TRENCH ISOLATION FOR HIGH-K METAL GATE DEVICE IMPROVEMENT - A method for fabricating a semiconductor device with improved performance is disclosed. The method comprises providing a substrate including a first region and a second region; forming at least one isolation region having a first aspect ratio in the first region and at least one isolation region having a second aspect ratio in the second region; performing a high aspect ratio deposition process to form a first layer over the first and second regions of the substrate; removing the first layer from the second region; and performing a high density plasma deposition process to form a second layer over the first and second regions of the substrate.04-08-2010

Chung Long Cheng, Baoshan Township TW

Patent application numberDescriptionPublished
20100052058DOWNSIZE POLYSILICON HEIGHT FOR POLYSILICON RESISTOR INTEGRATION OF REPLACEMENT GATE PROCESS - A semiconductor device and method for fabricating a semiconductor device protecting a resistive structure in gate replacement processing is disclosed. The method comprises providing a semiconductor substrate; forming at least one gate structure including a dummy gate over the semiconductor substrate; forming at least one resistive structure including a gate over the semiconductor substrate; exposing a portion of the gate of the at least one resistive structure; forming an etch stop layer over the semiconductor substrate, including over the exposed portion of the gate; removing the dummy gate from the at least one gate structure to create an opening; and forming a metal gate in the opening of the at least one gate structure.03-04-2010
20100078728RAISE S/D FOR GATE-LAST ILD0 GAP FILLING - The present disclosure provides an integrated circuit having metal gate stacks. The integrated circuit includes a semiconductor substrate; a gate stack disposed on the semiconductor substrate, wherein the gate stack includes a high k dielectric layer and a first metal layer disposed on the high k dielectric layer; and a raised source/drain region configured on a side of the gate stack and formed by an epitaxy process, wherein the semiconductor substrate includes a silicon germanium (SiGe) feature underlying the raised source/drain region.04-01-2010