Abstract:
The present invention provides SOI material which includes a top Si-containing layer which has regions of different thickness as well as a method of fabricating such SOI material. The inventive method includes a step of thinning predetermined regions of the top Si-containing layer by masked oxidation of silicon. SOI IC chips including the inventive SOI material having different types of CMOS devices build thereon as also disclosed.
Abstract:
A low temperature polysilicon thin film transistor and a method of forming the polysilicon layer inside the thin film transistor. An amorphous silicon layer is formed over a panel. The panel has a display region and a peripheral circuit region. A metallic layer is formed over a portion of the amorphous silicon layer in the peripheral circuit region. A crystallization process is performed to transform the amorphous silicon layer in the peripheral circuit region into a polysilicon layer. Thereafter, an excimer laser annealing process is performed to increase the grain size of the polysilicon layer in the peripheral circuit region and, at the same time, transform the amorphous silicon layer in the display region into a polysilicon layer. Since the average grain size of the polysilicon layer in the peripheral circuit region is larger, electron mobility is increased as demanded. Similarly, since the average grain size of the polysilicon layer in the display region is smaller, leakage current is decreased as demanded.
Abstract:
Providing a semiconductor device with a TFT structure with high reliability In a CMOS circuit formed on a substrate 100, a subordinate gate wiring line (a first wiring line) 102a and main gate wiring line (a second wiring line) 107a is provided in an n-channel TFT. The LDD regions 113 overlaps the first wiring line 102a and does not overlap the second wiring line 107a. Thus, applying a gate voltage to the first wiring line forms the GOLD structure, while not applying forms the LLD structure. In this way, the GOLD structure and the LLD structure can be used appropriately in accordance with the respective specifications required for the circuits.
Abstract:
A method of sealing an optical fiber in a microchip includes providing a device microchip, a top microchip and an optical fiber; forming a groove in at least one of the device microchip and the top microchip; coating metal on the optical fiber; depositing metal on the groove and top surfaces of the device microchip and the top microchip; depositing solder on the top surface of at least one of the device microchip and the top microchip; placing the optical fiber in the groove; placing the top microchip on the device microchip; and reflowing the solder to form a hermetic seal.
Abstract:
A process of fabricating a molecular electronic device that preserves the integrity of the active molecular layer of the electronic device during processing is described. In one aspect, a passivation layer is provided to protect a molecular layer from degradation during patterning of the top wire layer. A molecular electronic device structure and a memory system that are formed from this fabrication process are described.
Abstract:
In order to make a charge couple device including an interconnect layer to contact active areas, a first layer of a first titanium nitride layer on the active areas, and then a series of alternating titanium and titanium nitride layers are deposited to form a composite sandwich structure. This structure is less prone flaking while able to withstand high temperature treatment during fabrication of backside illuminated sensors to improve quantum efficiency and reduce dark current.
Abstract:
The present disclosure pertains to our discovery of a method of etching a shaped cavity in a substrate, where the shaped cavity has a width that is at least as great as its depth. We have discovered that by varying the process chamber pressure during etching of the shaped cavity, we can control lateral etching of the shaped cavity, while allowing the removal of etch process byproducts from the shaped cavity during continued etching. The method of the invention can be used to etch shaped cavities having round or horizontal elliptical shapes. The method of the invention is particularly useful in the etching of buried cavities, where removal of etch byproducts from the cavity can be difficult.
Abstract:
A method for forming a MOSFET having greatly reduced leakage current between the gate electrode and the channel, source and drain regions. The method requires the use of gate electrode materials having lower electron affinities than the channel, source and drain regions. Gate electrode materials with negative electron affinities will also achieve the objectives of the invention. The use of these gate electrode materials enables the band structures of the gate electrode and the other regions to be aligned in a manner that eliminates tunneling states for carriers tunneling between the gate and the body of the device.
Abstract:
A broad crystal display panel having a color filter substrate is supported by supporting nails and the middle portion of a supporting span is pressed by a loading bar. From this state, the supporting nails are removed to release the supporting, and subsequently the supporting nails are also removed to release the supporting the color filter substrate. While preventing the displacement between the color filter substrate and a TFT array substrate, the color filter substrate and the TFT array substrate can be stacked with a specified distance.
Abstract:
In a microwave plasma processing apparatus, a metal made lattice-like shower plate 111 is provided between a dielectric material shower plate 103, and a plasma excitation gas mainly an inert gas and a process gas are discharged from different locations. High energy ions can be incident on a surface of the substrate 114 by grounding the lattice-like shower plate. The thickness of each of the dielectric material separation wall 102 and the dielectric material at a microwave introducing part is optimized so as to maximize the plasma excitation efficiency, and, at the same time, the distance between the slot antenna 110 and the dielectric material separation wall 102 and a thickness of the dielectric material shower plate 103 are optimized so as to be capable of supplying a microwave having a large power.