Abstract:
One embodiment of the invention provides a system that analyzes a layout related to a circuit on a semiconductor chip using an instance-based representation of a set of geometrical features that comprise the layout. The system operates by receiving a representation of the layout, wherein the representation defines a plurality of nodes that include one or more geometrical features. Next, the system converts the representation into an instance-based representation by identifying multiple occurrences of identical node instances in the layout, wherein each node instance can be further processed without having to consider effects of external factors on the node instance. The system then performs an further processing on the instance-based representation by processing each node instance only once, whereby the processing does not have to be repeated on multiple occurrences of the node instance in the layout.
Abstract:
A method for performing design rule checking on OPC corrected or otherwise corrected designs is described. This method comprises accessing a corrected design and generating a simulated image. The simulated image corresponds to a simulation of an image which would be printed on a wafer if the wafer were exposed to an illumination source directed through the corrected design. The characteristics of the illumination source are determined by a set of lithography parameters. In creating the image, additional characteristics can be used to simulate portions of the fabrication process. However, what is important is that a resulting simulated image is created. The simulated image can then be used by the design rule checker. Importantly, the simulated image can be processed to reduce the number of vertices in the simulated image, relative to the number of vertices in the OPC corrected design layout. Also, the simulated image can be compared with an idea layout image, the results of which can then be used to reduce the amount of information that is needed to perform the design rule checking.
Abstract:
A method and apparatus for creating a phase shifting mask and a structure mask for shrinking integrated circuit designs. One embodiment of the invention includes using a two mask process. The first mask is a phase shift mask and the second mask is a single phase structure mask. The phase shift mask primarily defines regions requiring phase shifting. The single phase structure mask primarily defines regions not requiring phase shifting. The single phase structure mask also prevents the erasure of the phase shifting regions and prevents the creation of undesirable artifact regions that would otherwise be created by the phase shift mask. Both masks are derived from a set of masks used in a larger minimum dimension process technology.
Abstract:
An electrical connector includes an insulating housing which defines an inserting mouth penetrating through a front side thereof and terminal grooves communicating with the inserting mouth and each extending longitudinally to penetrate rearward through the insulating housing. A plurality of electrical terminals is assembled in the terminal grooves and each has a contact arm elastically stretching into the inserting mouth and defining a contact end. The insulating housing further defines a plurality of through holes penetrating vertically therethrough to connect with the inserting mouth and arranged in accordance with the contact ends of the electrical terminals. The through holes are used to provide action space for meeting movements of the contact ends and receiving the contact ends therein, when a mating part is inserted into the inserting mouth and pressure contacts with the contact ends.
Abstract:
An electrical connector includes an insulating housing which defines an inserting mouth penetrating through a front side thereof and terminal grooves communicating with the inserting mouth and each extending longitudinally to penetrate rearward through the insulating housing. A plurality of electrical terminals is assembled in the terminal grooves and each has a contact arm elastically stretching into the inserting mouth and defining a contact end. The insulating housing further defines a plurality of through holes penetrating vertically therethrough to connect with the inserting mouth and arranged in accordance with the contact ends of the electrical terminals. The through holes are used to provide action space for meeting movements of the contact ends and receiving the contact ends therein, when a mating part is inserted into the inserting mouth and pressure contacts with the contact ends.
Abstract:
An electrical connector includes a first insulating body having a base board and a tongue board extending rearward from the base board, and a second insulating body having a base portion and fingers extending forward from the base portion. Two opposite sides of the tongue board protrude upward to form two clipping walls and oppositely protrude outward to form two restraining portions spaced from the clipping walls. A receiving space is formed among the tongue board, the base board and the clipping walls for receiving the second insulating body therein. The base portion is clipped between the clipping walls. Front ends of the fingers prop against the base board. Each side surface of the base portion defines an elastic arm having a top connected with the side surface and a bottom beyond a bottom surface of the base portion to be restrained between the restraining portion and the clipping wall.
Abstract:
An electrical connector includes an insulating body having a base portion and a tongue portion extending forward from the base portion, a plurality of terminals disposed in two opposite surfaces of the tongue portion and each having a soldering tail which stretches behind the base portion and further projects upward beyond a top of the base portion, and a lid having a positioning body and a fastening portion protruding forward from the positioning body. The positioning body defines a plurality of positioning apertures spaced from one another and each extending vertically to penetrate through the positioning body. The fastening portion is mounted to the top of the base portion to make the positioning body locate behind the base portion. The soldering tails are inserted in the positioning apertures to be positioned and strengthened by the positioning body, with free ends thereof projecting beyond a top of the positioning body.