摘要:
Disclosed are embodiments of a method, system and computer program product for optimizing integrated circuit product yield by re-centering the manufacturing line and, optionally, adjusting wafer-level chip dispositioning rules based on the results of post-manufacture (e.g., wafer-level or module-level) performance path testing. In the embodiments, a correlation is made between in-line parameter measurements and performance measurements acquired during the post-manufacture performance path testing. Then, based on this correlation, the manufacturing line can be re-centered. Optionally, an additional correlation is made between performance measurements acquired during wafer-level performance testing and performance measurements acquired particularly during module-level performance path testing and, based on this additional correlation, adjustments can be made to the wafer-level chip dispositioning rules to further minimize yield loss.
摘要:
A method and system to predict a number of electromigration critical elements in semiconductor products. This method includes determining critical element factors for a plurality of library elements in a circuit design library using a design tool running on a computer device and based on at least one of an increased reliability temperature and an increased expected current. The method also includes determining a number of critical elements in a product based on: (i) numbers of respective ones of the plurality of library elements comprised in the product, and (ii) the critical element factors.
摘要:
A method of optimizing power and timing for an integrated circuit (IC) chip, identifies a plurality of valid temperature and voltage combinations that allow integrated circuit chips produced according to the integrated circuit chip design to operate within average power consumption goals and timing delay goals. Such a method selects temperature cut points from the valid temperature and voltage combinations for each of the integrated circuit chips, calculates a power consumption amount of each of the temperature cut points, and adjusts the temperature cut points based on the power consumption amount until the temperature cut points achieve the average power consumption goals. Next, this method tests each of the integrated circuit chips, and records the temperature cut points in the memory of the integrated circuit chips.
摘要:
A method of estimating integrated circuit yield comprises providing an integrated circuit layout and a set of systematic defects based on a manufacturing process. Next, the method represents a systematic defect by modifying structures in the integrated circuit layout to create modified structures. More specifically, for short-circuit-causing defects, the method pre-expands the structures when the structures comprise a higher systematic defect sensitivity level, and pre-shrinks the structures when the structures comprise a lower systematic defect sensitivity level. Following this, a critical area analysis is performed on the integrated circuit layout using the modified structures, wherein dot-throwing, geometric expansion, or Voronoi diagrams are used. The method then computes a fault density value, random defects and systematic defects are computed. The fault density value is subsequently compared to a predetermined value, wherein the predetermined value is determined using test structures and/or yield data from a target manufacturing process.
摘要:
A design structure for an integrated circuit including a first wire of a first level of wiring tracks, a second wire of a second level of wiring tracks, a third wire of a third level of wiring tracks, and a fourth wire located a first distance from the second wire in the second level of wiring tracks. A first via connects the first and second wires at a first location of the second wire. A second via connects the second and third wires at the first location, the second via is substantially axially aligned with the first via. A third via connecting the third and fourth wires at a second location of the fourth wire. A fourth via connecting the first and fourth wires at the second location, the fourth via is substantially axially aligned with the third via. The second, third, and fourth vias, and the third and fourth wires form a path between the first and second wires redundant to the first via.
摘要:
A method for providing quality control on wafers running on a manufacturing line is disclosed. The resistances on a group of manufacturing test structures within a wafer running on a wafer manufacturing line are initially measured. Then, an actual distribution value is obtained based on the result of the measured resistances on the group of manufacturing test structures. The difference between the actual distribution value and a predetermined distribution value is recorded. Next, the resistances on a group of design test structures within the wafer are measured. The measured resistances of the group of design test structures are correlated to the measured resistances of the group of manufacturing test structures in order to obtain an offset value. The resistance of an adjustable resistor circuit within the wafer and subsequent wafers running on the wafer manufacturing line are adjusted according to the offset value.
摘要:
A method of optimizing power and timing for an integrated circuit (IC) chip, identifies a plurality of valid temperature and voltage combinations that allow integrated circuit chips produced according to the integrated circuit chip design to operate within average power consumption goals and timing delay goals. Such a method selects temperature cut points from the valid temperature and voltage combinations for each of the integrated circuit chips, calculates a power consumption amount of each of the temperature cut points, and adjusts the temperature cut points based on the power consumption amount until the temperature cut points achieve the average power consumption goals. Next, this method tests each of the integrated circuit chips, and records the temperature cut points in the memory of the integrated circuit chips.
摘要:
Disclosed are embodiments of a method, system and computer program product for optimizing integrated circuit product yield by re-centering the manufacturing line and, optionally, adjusting wafer-level chip dispositioning rules based on the results of post-manufacture (e.g., wafer-level or module-level) performance path testing. In the embodiments, a correlation is made between in-line parameter measurements and performance measurements acquired during the post-manufacture performance path testing. Then, based on this correlation, the manufacturing line can be re-centered. Optionally, an additional correlation is made between performance measurements acquired during wafer-level performance testing and performance measurements acquired particularly during module-level performance path testing and, based on this additional correlation, adjustments can be made to the wafer-level chip dispositioning rules to further minimize yield loss.
摘要:
A method of optimizing power and timing for an integrated circuit (IC) chip, which uses an IC technology that exhibits temperature inversion, by modifying a voltage supplied to the IC chip, while meeting power consumption and timing delay performances across lower and higher temperature ranges. A high voltage is selected that meets a closed timing analysis across a full temperature range to meet a timing performance and a low voltage is selected to meet the timing performance and the power performance across a lower temperature range to a temperature cut point in the higher temperature range. The IC chip is turned on at the high voltage and the high voltage is lowered to the low voltage when the temperature cut point is exceeded to meet the power performance while maintaining the timing performance.
摘要:
Disclosed are embodiments of a method, system and computer program for optimizing system yield based on the results of post-manufacture integrated circuit (IC) chip performance path testing. In these embodiments, a correlation is made between IC chip performance measurements, which were acquired from IC chips specifically during post-manufacture (i.e., wafer-level or module-level) performance path testing, and system performance measurements, which were acquired from systems that incorporate those IC chips previously subjected to performance path testing. Based on this correlation and a target system performance value, a post-manufacture (i.e., wafer-level or module-level) chip dispositioning rule can be adjusted to optimize system yield (i.e., to ensure that subsequently manufactured systems which incorporate the IC chip meet the target system performance value). Optionally, simulation of such processing can be performed during design of the IC chip for incorporation into the system in order establish the initial chip dispositioning rule in the first place.