An improved dual gate oxide process for dual-gated devices using oxygen ion implantation to vary the thickness of gate oxide layers. The desired layers are identified by photoresist layer patterning prior to an ion implantation. A subsequent heat treatment oxidizes the implanted region.
Endpoint Detection Method And Apparatus Which Utilize A Chelating Agent To Detect A Polishing Endpoint
A method of planarizing a semiconductor wafer having a polishing endpoint layer that includes a ligand is disclosed. One step of the method includes polishing a first side of the wafer in order to remove the ligand from the wafer. Another step of the method includes determining that a chelating agent has bound the ligand due to the polishing step removing the ligand of the polishing endpoint layer. The method also includes the step of terminating the polishing step in response to determining that the chelating agent has bound the ligand. A polishing system is also disclosed which detects a polishing endpoint based upon a chelating agent binding a ligand of a polishing endpoint layer of a semiconductor device.
High Strength Composite Thermoelectric Cooler And Method For Making Same
Robert Joseph Stephen Kyle - Rowlett TX Gail D. Shelton - Albuquerque NM Sam McKenney - Dallas TX
Assignee:
Raytheon Company - Lexington MA
International Classification:
H01L 3534
US Classification:
136201, 136203, 136233, 62 32
Abstract:
A high-strength, single-staged, composite thermoelectric cooler ( ) for stabilizing the temperature of an uncooled, infrared detector ( ) comprising a pair of ceramic plates ( ), a plurality of thermoelectric elements ( ) sandwiched between the plates ( ) such that the thermoelectric elements ( ) and the ceramic plates ( ) define a plurality of chambers ( ), and a thermoelectric insulator ( ) which substantially fills the chambers ( ) inside the thermoelectric cooler ( ) forming a high-strength composite structure with the thermoelectric elements ( ) and the ceramic plates ( ).
Method For Enhancing Anti-Reflective Coatings Used In Photolithography Of Electronic Devices
Kunal Taravade - Colorado Springs CO Gayle Miller - Colorado Springs CO Gail Shelton - Colorado Springs CO
Assignee:
LSI Logic Corporation - Milpitas CA
International Classification:
C23C 1690
US Classification:
118720, 438780, 430311
Abstract:
A method of fabricating an integrated circuit using photolithography and an antireflective coating. An antireflective coating is formed on a substrate wherein the antireflective coating is electrically polarizable. A photoresist coating is formed on the antireflective coating on a side opposite from the substrate and the photoresist is exposed to activating radiation. The antireflective coating is subjected to an applied electric field at substantially the same time as the photoresist is exposed to activating radiation. The radiation absorption coefficient of said antireflective coating is increased and the refractive index of said antireflective coating is changed to be substantially equal to the refractive index of said photoresist coating.
Method For Composing A Dielectric Layer Within An Interconnect Structure Of A Multilayer Semiconductor Device
Gayle W. Miller - Colorado Springs CO Gail D. Shelton - Colorado Springs CO
Assignee:
LSI Logic Corporation - Milpitas CA
International Classification:
H01L 2358
US Classification:
257637, 257760, 438763, 438780
Abstract:
A method for composing a dielectric layer within an interconnect structure of a multilayer semiconductor device is disclosed. A layer of silica precursor material is first deposited on a silicon substrate. Without affecting its structure and porosity, the layer of silica precursor material is then dried; and the layer of silica precursor material becomes porous silica film. Subsequently, a protective layer, such as parylene, is deposited on top of the dried porous silica film. The thickness of the protective layer should be greater than the peak-valley planarization requirements of the silicon substrate surface. As a result, a composite porous silica film, which services as a dielectric layer within an interconnect structure, is formed. This composite porous silica film has a relatively low dielectric constant and is able to withstand damage from a standard CMP procedure.
Method For Composing A Dielectric Layer Within An Interconnect Structure Of A Multilayer Semiconductor Device
Gayle W. Miller - Colorado Springs CO Gail D. Shelton - Colorado Springs CO
Assignee:
LSI Logic Corporation - Milpitas CA
International Classification:
H01L 2176
US Classification:
438409, 438635, 438637, 438642, 438762, 438780
Abstract:
A method for composing a dielectric layer within an interconnect structure of a multilayer semiconductor device is disclosed. A layer of silica precursor material is first deposited on a silicon substrate. Without affecting its structure and porosity, the layer of silica precursor material is then dried; and the layer of silica precursor material becomes porous silica film. Subsequently, a protective layer, such as parylene, is deposited on top of the dried porous silica film. The thickness of the protective layer should be greater than the peak-valley planarization requirements of the silicon substrate surface. As a result, a composite porous silica film, which services as a dielectric layer within an interconnect structure, is formed. This composite porous silica film has a relatively low dielectric constant and is able to withstand damage from a standard CMP procedure.
Method And Apparatus For Deposition Of Porous Silica Dielectrics
Gayle Miller - Colorado Springs CO, US Gail Shelton - Colorado Springs CO, US
International Classification:
H01L021/8238
US Classification:
438/202000
Abstract:
A method and apparatus for forming a dielectric layer. A dielectric precursor solution is deposited onto a surface of a substrate. The substrate is spun to spread the dielectric precursor solution over the surface of the substrate. A catalyst is introduced through a filter, wherein the filter causes a substantially homogenous distribution of the catalyst within the substrate, wherein a dielectric layer forms containing pores and wherein a solvent is contained in the pores. The solution is dried to form the dielectric layer using a carrier gas after introducing the catalyst, wherein the carrier gas places a positive pressure within the pores while removing the solvent to form a low-k dielectric layer.
Gail Shelton - Colorado Springs CO, US Gayle Miller - Colorado Springs CO, US
International Classification:
H01L021/8238 H01L021/8234 H01L021/336 H01L021/76
US Classification:
438/275000, 438/287000, 438/407000, 438/216000
Abstract:
An improved dual gate oxide process for dual-gated devices using oxygen ion implantation to vary the thickness of gate oxide layers. The desired layers are identified by photoresist layer patterning prior to an ion implantation. A subsequent heat treatment oxidizes the implanted region.
Ronnie Yocum, Dennis Hagins, Fran Smith, Barbara Williford, Connie Cook, Doyle Wood, Barbara Ratley, Cathy Wiggs, Carol Garland, Donna Davis, Janice Buie