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Class 257/408 - Including lightly doped drain portion adjacent channel (e.g., lightly doped drain, LDD device)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: Subject matter wherein the device includes a drain portion
No. of patents: 1213
Last issue date: 04/17/2012


1                      
NumberTitleIssue Date
8159036Semiconductor device and method of manufacturing the same
A LDD layer of the second conduction type locates in the surface of a semiconductor layer beneath a sidewall insulator film. A source layer of the second conduction type is formed in the surface of the semiconductor layer at a position adjacent to the LDD layer. A r...
04/17/2012
8138559Recessed drift region for HVMOS breakdown improvement
A high-voltage metal-oxide-semiconductor (HVMOS) device having increased breakdown voltage and methods for forming the same are provided. The HVMOS device includes a semiconductor substrate; a gate dielectric on a surface of the semiconductor substrate; a gate elect...
03/20/2012
8106466MOS transistor and method for fabricating the same
A method for fabricating a MOS transistor is disclosed. First, a semiconductor substrate having a gate thereon is provided. A spacer is then formed on the sidewall of the gate, and two recesses are formed adjacent to the spacer and within the semiconductor substrate...
01/31/2012
8097924Ultra-shallow junction MOSFET having a high-k gate dielectric and in-situ doped selective epitaxy source/drain extensions and a method of making same
A MOSFET includes a gate having a high-k gate dielectric on a substrate and a gate electrode on the gate dielectric. The gate dielectric protrudes beyond the gate electrode. A deep source and drain having shallow extensions are formed on either side of the gate. The...
01/17/2012
8093665Semiconductor device and method for fabricating the same
A semiconductor device is described, which includes a substrate, a gate structure, doped regions and lightly doped regions. The substrate has a stepped upper surface, which includes a first surface, a second surface and a third surface. The second surface is lower t...
01/10/2012
8053847Method for fabricating metal-oxide semiconductor transistors
A method for fabricating a metal-oxide semiconductor transistor is disclosed. First, a semiconductor substrate having a gate structure thereon is provided, and a spacer is formed around the gate structure. An ion implantation process is performed to implant a molecu...
11/08/2011
8022488High-performance FETs with embedded stressors
A high-performance semiconductor structure and a method of fabricating such a structure are provided. The semiconductor structure includes at least one gate stack, e.g., FET, located on an upper surface of a semiconductor substrate. The structure further includes a ...
09/20/2011
7989901MOS devices with improved source/drain regions with SiGe
A semiconductor structure and methods for forming the same are provided. The semiconductor structure includes a semiconductor substrate; a gate stack on the semiconductor substrate; a SiGe region in the semiconductor substrate and adjacent the gate stack, wherein th...
08/02/2011
7973372Semiconductor structure in which source and drain extensions of field-effect transistor are defined with different dopants
An insulated-gate field-effect transistor (100) provided along an upper surface of a semiconductor body contains a pair of source/drain zones (240 and 242) laterally separated by a channel zone (244). A gate electrode (262) overlie...
07/05/2011
7956425Graded gate field
Thin film transistors (TFT) and methods for making same. The TFTs generally comprise: (a) a semiconductor layer comprising source and drain terminals and a channel region therebetween; (b) a gate electrode comprising a gate and a gate dielectric layer between the ga...
06/07/2011
7952152Semiconductor device and fabrication method thereof
For forming a gate electrode, a conductive film with low resistance including Al or a material containing Al as its main component and a conductive film with low contact resistance for preventing diffusion of Al into a semiconductor layer are laminated, and the gate...
05/31/2011
7906820Source offset MOSFET optimized for current voltage characteristic invariance with respect to changing temperatures
A semiconductor device is disclosed. The semiconductor device includes a source offset type MOS transistor in which a source and a drain are formed on a semiconductor substrate by having a predetermined distance between the source and the drain, and a gate electrode...
03/15/2011
7888752Structure and method to form source and drain regions over doped depletion regions
A structure and method of reducing junction capacitance of a source/drain region in a transistor. A gate structure is formed over on a first conductive type substrate. We perform a doped depletion region implantation by implanting ions being the second conductive ty...
02/15/2011
7884427Applying epitaxial silicon in disposable spacer flow
A process for forming active transistors for a semiconductor memory device by the steps of: forming transistor gates having generally vertical sidewalls in a memory array section and in periphery section; implanting a first type of conductive dopants into exposed si...
02/08/2011
7868398Semiconductor device
A semiconductor device, which can improve the effect of a hydrogenation treatment in case of using a GOLD structure, and a method of manufacturing thereof is provided. A gate insulating film is formed on a semiconductor layer, and a source region, a drain region, an...
01/11/2011
7863693Forming conductive stud for semiconductive devices
Embodiments of the present invention provide a method of forming a conductive stud contacting a semiconductor device. The method includes forming a protective layer covering the semiconductor device; selectively etching an opening down through the protective layer r...
01/04/2011
7863692Semiconductor device
Embodiments relate to a semiconductor device in which a first oxide layer may be formed in a channel area under the gate electrode. An electric field loaded on the gate electrode may be reduced when electrons are implanted from the source to the drain, the accelerat...
01/04/2011
7804142Semiconductor device and fabrication method thereof
For forming a gate electrode, a conductive film with low resistance including Al or a material containing Al as its main component and a conductive film with low contact resistance for preventing diffusion of Al into a semiconductor layer are laminated, and the gate...
09/28/2010
7768078Power semiconductor device having improved performance and method
In one embodiment, a semiconductor device is formed in a body of semiconductor material. The semiconductor device includes a counter-doped drain region spaced apart from a channel region. ...
08/03/2010
7759745Semiconductor memory device
A drain (7) includes a lightly-doped shallow impurity region (7a) aligned with a control gate (5), and a heavily-doped deep impurity region (7b) aligned with a sidewall film (8) and doped with impurities at a concentr...
07/20/2010
7737510Semiconductor device and method for fabricating the same
A gate insulating film and a gate electrode are formed on an active region of a semiconductor substrate. A sidewall forming an L shape in cross section is formed on the sides of the gate electrode. Source/drain regions are formed in regions of the semiconductor subs...
06/15/2010
7728393Semiconductor device
A semiconductor device and method of manufacturing the semiconductor device are provided. The semiconductor device may include a semiconductor substrate, a gate insulation layer and a gate electrode, a first spacer, a second spacer, an epitaxial pattern, and/or sour...
06/01/2010
7683440Semiconductor memory device
A drain (7) includes a lightly-doped shallow impurity region (7a) aligned with a control gate (5), and a heavily-doped deep impurity region (7b) aligned with a sidewall film (8) and doped with impurities at a concentr...
03/23/2010
7655991CMOS device with stressed sidewall spacers
Sidewall spacers on the gate of a MOS device are formed from stressed material so as to provide strain in the channel region of the MOS device that enhances carrier mobility. In a particular embodiment, the MOS device is in a CMOS cell that includes a second MOS dev...
02/02/2010
7649234Semiconductor devices
An embodiment of a semiconductor device includes a gate electrode overlying a substrate and a lightly doped epitaxial layer formed on the substrate. A high energy implant region forms a well in a source side of the lightly doped epitaxial layer. A self-aligned halo ...
01/19/2010
7642607MOS devices with reduced recess on substrate surface
A MOS device having reduced recesses under a gate spacer and a method for forming the same are provided. The MOS device includes a gate structure overlying the substrate, a sidewall spacer on a sidewall of the gate structure, a recessed region having a recess depth ...
01/05/2010
7598575Semiconductor die with reduced RF attenuation
The attenuation of an RF signal on a metal trace in a semiconductor die is substantially reduced by utilizing a number of RF blocking structures that lie on the surface of the substrate directly below the metal trace that carries the RF signal. The RF blocking struc...
10/06/2009
7535065Thin film transistor device utilizing transistors of differing material characteristics
A first insulating film is formed. Then, a gate electrode of a low voltage drive thin film transistor and a mask film for covering a region constituting a channel of a high voltage drive thin film transistor are formed with a molybdenum film on the first insulating ...
05/19/2009
7525165Light emitting device and manufacturing method thereof
The light emitting device according to the present invention is characterized in that a gate electrode comprising a plurality of conductive films is formed, and concentrations of impurity regions in an active layer are adjusted with making use of selectivity of the ...
04/28/2009
7521768Electric device comprising an LDMOS transistor
The LDMOS transistor (99) of the invention is provided with a stepped shield structure (50) and/or with a first (25) and a second (26) drain extension region having a higher dopant concentration than the second drain extension region, and...
04/21/2009
7521767MOS transistor in a semiconductor device
Methods of forming a MOS transistor and a MOS transistor fabricated thereby are provided. The MOS transistor includes a semiconductor substrate of a first conductivity type, and an insulated gate pattern having sidewalls disposed on a predetermined region of the sem...
04/21/2009
7518198Transistor and method for manufacturing the same
A transistor including a semiconductor substrate defined with an active region and a device isolation region, a gate formed on the semiconductor substrate, an insulating spacers formed on respective side walls of the gate, and source/drain junctions formed in the se...
04/14/2009
7498642Profile confinement to improve transistor performance
A semiconductor device having well-defined profiles is disclosed. A p-type pocket/halo region is preferably formed along a channel-side border of the heavily doped source/drain region to neutralize diffused n-type elements. A diffusion-retarding region is formed to ...
03/03/2009
7492017Semiconductor transistor having a stressed channel
A process is described for manufacturing an improved PMOS semiconductor transistor. Recesses are etched into a layer of epitaxial silicon. Source and drain films are deposited in the recesses. The source and drain films are made of an alloy of silicon and germanium....
02/17/2009
7473976Lateral power transistor with self-biasing electrodes
A semiconductor power transistor includes a drift region of a first conductivity type and a well region of a second conductivity type in the drift region such that the well region and the drift region form a pn junction therebetween. A first highly doped silicon reg...
01/06/2009
7436035Method of fabricating a field effect transistor structure with abrupt source/drain junctions
Microelectronic structures embodying the present invention include a field effect transistor (FET) having highly conductive source/drain extensions. Formation of such highly conductive source/drain extensions includes forming a passivated recess which is back filled...
10/14/2008
7436026Semiconductor device comprising a superlattice channel vertically stepped above source and drain regions
A semiconductor device may include a semiconductor substrate and at least one metal oxide semiconductor field-effect transistor (MOSFET). The at least one MOSFET may include spaced apart source and drain regions in the semiconductor substrate, and a superlattice cha...
10/14/2008
7429771Semiconductor device having halo implanting regions
A MIS-type semiconductor device includes a p-type semiconductor substrate, a gate insulating film formed on the semiconductor substrate, a gate electrode formed on the gate insulating film, and n-type diffused source and drain layers formed in regions of the semicon...
09/30/2008
RE40486Self-aligned non-volatile memory cell
Disclosed is a self-aligned non-volatile memory cell including a small sidewall spacer electrically coupled and being located next to a main floating gate region. Both the small sidewall spacer and the main floating gate region are formed on a substrate and both for...
09/09/2008
7420250Electrostatic discharge protection device having light doped regions
Provided are an electrostatic discharge (ESD) protection device and a method for making such a device. In one example, the ESD protection device includes a Zener diode region formed in a substrate and an N-type metal oxide semiconductor (NMOS) device formed adjacent...
09/02/2008
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