摘要:
A variety of pad arrangements are provided for semiconductor devices for reducing the likelihood of bonding failures, particularly those due to shorts, and/or for reducing the difference in length between bonding wires to decrease signal skew during operation of the semiconductor device and improve signal integrity.
摘要:
A peripheral circuit of a semiconductor device, including a circuit further including a plurality of electronic components using same source voltage, wherein the plurality of electronic components have gate oxides of different thicknesses. The plurality of electronic components may be for a delay chain, a directional delay and a power switch.
摘要:
A method for generating an initializing signal capable of preventing inner circuits installed in a semiconductor memory device from being initially unstably operated due to the application of external electric power. The method includes the steps of: (a) receiving a precharge command for precharging the semiconductor memory device; (b) activating the initializing signal to a first level in response to the received precharge command; (c) receiving a refresh command for refreshing the semiconductor memory device after receipt of the precharge command; (d) receiving a mode set command for setting an operational mode of the semiconductor memory device after receipt of the refresh command; and (e) deactivating the initializing signal to a second level in response to the received mode set command. An alternative method includes the step of (a) receiving a mode set command foe initializing an inner circuit in a semiconductor memory device and (b) generating a control signal in response to the received mode set command and using the control signal as the initializing signal.
摘要:
A technique for selecting a desired operational voltage mode in a semiconductor memory device by applying an external command signal is disclosed. The technique enables an internal voltage mode to be selected in response to an internal voltage mode selection that is programmable even after the completion of the package process for a semiconductor memory device. In one embodiment, the operational voltage mode selection circuit of a semiconductor memory device includes a first selection signal generating part that allows programmable selection of, or override of, a first operational voltage mode; a second selection signal generating part that allows programmable selection of, or override of, a second operational voltage mode; and an operational voltage mode determining part for decoding the output of the first and second voltage selection signal generating parts, along with programmable input selection signals, output an operational voltage mode determining signal.
摘要:
A temperature sensing circuit has numerous trip points in conformity with a temperature change without adding decrease resistance branches, so as to obtain a fine control based on the temperature change. Accordingly, when employed in a semiconductor memory device, the temperature sensing circuit substantially reduces the consumption of refresh electrical power in a stand-by state without decreasing the reliability of the semiconductor memory device.
摘要:
This invention relates to methods of building rigid or flexible arrays of electro-optic devices. A phase separated composite structure technique yields adjacent regions of polymer and liquid crystal (LC) of specific architecture instead of a random dispersion of LC droplets. The above devices can be prepared by producing volutes of LC structure (56) next to a polymer area (58) using anisotropic phase separation of LC from a photopolymer. Initial by UV exposure. The shape, size and placement of these regions inside a cell becomes easily controllable with using optical mask or laser beam. The boundaries of LC volume can be controlled by controlling the chemical composition of the polymer and using an alignment layer (28).
摘要:
A semiconductor memory device and a failed cell address programming circuit usable therein. The semiconductor memory device as packaged includes a memory cell array having a plurality of memory cells accessed by an internal address, a plurality of redundant memory cells accessed by a failed cell address of a failed memory cell for repairing a failed memory cell, a comparator for comparing data output from the memory cells during testing the semiconductor memory device as packaged and generating a comparative correspondence signal, a mode setting register for storing an externally applied failed cell address programming control signal in response to a mode control signal, an address generating circuit for generating the internal address by buffering and latching an externally applied address, a failed cell address programming circuit for latching the internal address output from the address generating circuit in response to the failed cell address programming control signal when the comparative accordance signal indicates that a failed memory cell is detected and programming the failed cell address which is an address for accessing the failed memory cell; and a failed cell address decoding circuit for generating a redundant selection signal when the internal address output from the address generating circuit and the failed cell address output from the failed cell address programming correspond.
摘要:
Disclosed is a service area expansion method and a method of processing calls between service areas in a mobile communication system adopting a CDMA system like a DCS (digital cellular system) or a PCS (personal communication system), in which a reference clock is delayed and an application specific integrated circuit (ASIC) of a plurality of CSMs (cell site modems) in a base station is controlled using such a delayed reference clock so as to expand service area by each CSM ASIC unit, and a handoff area is positioned between expanded service areas so as to perform a normal call processing. A base station of a CDMA mobile communication system is provided with a plurality of CSM ASICs having the same configuration and a delayed reference clock is fed to each CSM ASIC, thus expanding service area. Such a communication service may be provided to the coastal area where a base station is easily installed. A need to install a base station to the wide area having small subscribers is eliminated, decreasing a cost for base station installation.
摘要:
A function display controlling method and apparatus for a composite apparatus of a compact disc graphics (CDG) player and of a video cassette recorder (VCR) for displaying on a single fluorescent display panel. The control functions are divided into three groups of the CDG player exclusive function, an exclusive function of the VCR and a function common to both the CDG player and the VCR. The functions selected or currently being executed in the composite apparatus of the CDG player and the VCR are recognized by a controller, and because the CDG player exclusive function, the exclusive function of VCR and the function common to both the CDG player and the VCR, which are stored in a function control input section, are read out in accordance with the operation size, the current operation state is displayed on a fluorescent display panel. Therefore, the fluorescent display panels in the composite apparatus of the CDG player and the VCR are simplified, and the operative functions are clearly displayed.
摘要:
First alignment is performed by forming an alignment layer that includes a photopolymerizable monomer or oligomer on a substrate and the like, introducing liquid crystal, and bringing the liquid crystal into contact with the alignment layer including the photopolymerizable monomer or oligomer.The liquid crystal is then subjected to secondary alignment by photopolymerizing the photopolymerizable monomer or oligomer including the alignment layer to form an alignment regulator in a state in which an electric field is applied to the liquid crystal to change the alignment of the liquid crystal.