Abstract:
A CMOS image sensor having increased capacitance that allows a photo-diode to generate a larger current is provided. The increased capacitance reduces noise and the dark signal. The image sensor utilizes a transistor having nitride spacers formed on a buffer oxide layer. Additional capacitance may be provided by various capacitor structures, such as a stacked capacitor, a planar capacitor, a trench capacitor, a MOS capacitor, a MIM/PIP capacitor, or the like. Embodiments of the present invention may be utilized in a 4-transistor pixel or a 3-transistor pixel configuration.
Abstract:
A new method of forming an improved buried contact junction is described. A gate silicon oxide layer is provided over the surface of a semiconductor substrate. A polysilicon layer is deposited overlying the gate oxide layer. A hard mask layer is deposited overlying the polysilicon layer. The hard mask and polysilicon layers are etched away where they are not covered by a mask to form a polysilicon gate electrode and interconnection lines wherein gaps are left between the gate electrode and interconnection lines. A layer of dielectric material is deposited over the semiconductor substrate to fill the gaps. The hard mask layer is removed. The polysilicon layer is etched away where it is not covered by a buried contact mask to form an opening to the semiconductor substrate. Ions are implanted to form the buried contact. A refractory metal layer is deposited overlying the buried contact and the polysilicon gate electrode and interconnection lines and planarized to form polycide gate electrodes and interconnection lines. The dielectric material layer is removed. An oxide layer is deposited and anisotropically etched to leave spacers on the sidewalls of the polycide gate electrodes and interconnection lines to complete the formation of a buried contact junction in the fabrication of an integrated circuit.
Abstract:
A new method and structure for the combined creation of CMOS devices and LED devices. The process starts with a substrate over the surface of which are designated a first surface region for the creation of CMOS devices there-over and a second surface region for the creation of LED devices there-over. A relatively thick layer of gate oxide is created over the surface of the substrate. The first surface region is blocked by a mask of photoresist after which the second surface region is exposed to a plasma etch, thereby providing roughness to the surface of the relatively thick layer of gate oxide and reducing the thickness thereof. The blocking mask is removed, additional oxidation of the exposed surface creates a relatively thick layer of gate oxide over the first surface area and a relatively thin layer of gate oxide over the second surface area.
Abstract:
A CMOS image sensor having increased capacitance that allows a photo-diode to generate a larger current is provided. The increased capacitance reduces noise and the dark signal. The image sensor utilizes a transistor having nitride spacers formed on a buffer oxide layer. Additional capacitance may be provided by various capacitor structures, such as a stacked capacitor, a planar capacitor, a trench capacitor, a MOS capacitor, a MIM/PIP capacitor, or the like. Embodiments of the present invention may be utilized in a 4-transistor pixel or a 3-transistor pixel configuration.
Abstract:
A method of forming a contact in a thin film transistor with a gate electrode and an interconnect formed on a substrate, in an SRAM device comprises the following steps. Form a gate oxide layer over device. Form a split amorphous silicon layer over gate oxide layer. Form a cap layer over split amorphous silicon layer. Form a contact opening down to interconnect. Form contact metallization in opening on the surface of interconnect either as a blanket titanium layer followed by rapid thermal anneal to form a silicide and stripping unreacted titanium or by selective formation of a tungsten metal silicide in the opening. Strip cap layer from device. Form a second amorphous silicon layer on split silicon layer. Recrystallize silicon layers to form a polysilicon channel layer from amorphous silicon layers. Dope regions of polysilicon channel layer aside from a channel region above gate electrode.
Abstract:
A buried contact junction is described. A gate silicon oxide layer is provided over the surface of a semiconductor substrate. A polysilicon layer is deposited overlying the gate oxide layer. A hard mask layer is deposited overlying the polysilicon layer. The hard mask and polysilicon layers are etched away where they are not covered by a mask to form a polysilicon gate electrode and interconnection lines wherein gaps are left between the gate electrode and interconnection lines. A layer of dielectric material is deposited over the semiconductor substrate to fill the gaps. The hard mask layer is removed. The polysilicon layer is etched away where it is not covered by a buried contact mask to form an opening to the semiconductor substrate. Ions are implanted to form the buried contact. A refractory metal layer is deposited overlying the buried contact and the polysilicon gate electrode and interconnection lines and planarized to form polycide gate electrodes and interconnection lines. The dielectric material layer is removed. An oxide layer is deposited and anisotropically etched to leave spacers on the sidewalls of the polycide gate electrodes and interconnection lines to complete the formation of a buried contact junction in the fabrication of an integrated circuit.
Abstract:
An information handling system circuit board has an opening formed through it proximate a coupling point of an integrated circuit to the circuit board. The opening manages stress at the coupling point of the integrated circuit to the circuit board to reduce the risk of damage to the coupling point during deformation of the circuit board, such as when the circuit board is coupled to a chassis or when a component is pressed into the circuit board. In one embodiment, rectangular openings are formed at diagonally opposed corners of a BSA integrated circuit. In alternative embodiments, openings of varying shape, such as slots or curved slots, are formed at selected corners of the integrated circuit.
Abstract:
A clamp for fixing a photographic slide and/or a photographic negative includes a carrier and a cover for fixing the slide or negative onto the carrier. The carrier includes a first guide for holding the negative, and a second guide extended from the first guide for holding the photographic slide.
Abstract:
An embedded transistor for an electrical device, such as a DRAM memory cell, and a method of manufacture thereof is provided. A trench is formed in a substrate and a gate dielectric and a gate electrode formed in the trench of the substrate. Source/drain regions are formed in the substrate on opposing sides of the trench. In an embodiment, one of the source/drain regions is coupled to a storage node and the other source/drain region is coupled to a bit line. In this embodiment, the gate electrode may be coupled to a word line to form a DRAM memory cell.
Abstract:
A hand-held device includes a first body, a second body, a sliding module, and a guiding module. The sliding module is disposed between the first body and the second body, so that the second body is able to be slid on a two-dimensional plane relative to the first body. The guiding module includes a first guiding part and a second guiding part. The first guiding part is fixed to the first body. The second guiding part is fixed to the second body and coupled to the first guiding part. Besides, the second guiding part is able to be moved along a guiding path relative to the first guiding part, so that the second body is able to be slid along the guiding path on the two-dimensional plane relative to the first body.