Abstract: A memory for a dynamic random access memory includes an isolation trench formed between a pair of cells. Pass gate transistors are formed on either side of the isolation trench, with source/drain regions for contacting to a bit line formed on the opposite side of a gate electrode from the isolation trench. A source/drain region for each transistor is formed between the gate electrode and the isolation trench, and is used for a charge storage capacitor connection. For each transistor, a conductive plug is formed in contact with the capacitor source/drain region and extending vertically above this region and the gate electrode. This conductive plug forms the charge storage node of the capacitor, and is covered by a dielectric layer and a common capacitor reference plate.
Abstract: A method for forming a memory cell for a dynamic random access memory includes the steps of first forming the transistors having gate electrodes (34) and source/drain regions (44) on either side thereof. An isolation trench (48) is formed in one of the source/drain regions with a portion (52) remaining. A masking layer (56) is formed over the surface of the substrate and an opening (62) formed therein to expose the source/drain region (52) and associated tungsten layer (50). A conductive plug (62) is formed in the opening followed by formation of an oxide layer (66). The plug (62) comprises the lower plate of the capacitor and then a conformal layer of conductive material (68) is formed over the surface thereof to comprise the upper plate of the capacitor. A planarized layer of oxide (69) is formed over the substrate and an opening (70) formed therein to expose the other of the source/drain regions (44). A contact plug (76) is formed in the opening (70) followed by formation of the interconnect layer (78).
Abstract: A communications network includes a system multiplexer (10) for effecting communication channels between a plurality of peripheral units. The peripheral units include master computers (12), (14) and (16) and various slave devices such as printers (28) and display terminals (26). The multiplexer (10) includes a receive multiplexer (30) and a transmit multiplexer (32) connected together through a communications link (34). The multiplexers are controlled through control logic circuitry (36) which receives signals from a CPU (42). The CPU (42) stores a connection pattern in the control logic circuitry (36) and alters this connection pattern to change the communications link between various peripheral devices. By multiplexing the channels, real time communication is achieved.
Abstract: An apparatus for pumping a fluid by means of a piezoelectric pump is provided. All moving parts, including the valves and core, are piezoelectrically motivated. The preferred embodiment includes a piezoelectric ceramic tube having conductive bands adhered to the outer surface. The conductive bands and an inner surface electrode define tube regions which serve as valve and reservoir pump regions. A sensing circuit senses the voltage on the outer electrodes of the innermost of the piezoelectric regions to detect the presence of faulty pumping operation. The sensing circuit utilizes the piezoelectric effect that results from internal loading of the core.
Abstract: A method for receiving and disposing of fluids from the human body includes the steps of disposing a semi-rigid burst resistive container within a rigid outer canister and supporting the inner container such that there is a space defined between the side walls of the semi-rigid inner container and the rigid outer canister. The open end of the semi-rigid inner container is fixedly covered and the fluids from the body are received within the inner container through this cover. A vacuum is applied both to the interior of the semi-rigid inner container and the space around the periphery thereof to provide an equalized pressure on both sides thereof. When the body fluids are received within the semi-rigid inner container, both the cover and the semi-rigid inner container are removed as an integral unit for disposal thereof.