Circuit simulation of the process of film resistive elements laser trimming under the effect of a measuring current source

V V Kondrashov, V V Chapkin, A V Lukashenkov
2018 Journal of Physics, Conference Series  
To solve the problems of film resistors laser trimming, finding the optimal cutting trajectory, and predicting the results, a discrete grid circuit model of the conductive medium is proposed. This circuit model is a grid with a sufficiently small step of elementary resistors, showing the distribution of currents and potential in a conducting medium. A mathematical model of a conducting medium is obtained in the form of algebraic equations system for the voltages at grid nodes, currents and
more » ... , currents and voltages on elementary resistors. An algorithm for calculating the electrophysical parameters of a resistor is developed with a change in the structure of the grid model in the process of trimming and finding the optimal cutting trajectory.
doi:10.1088/1742-6596/1109/1/012012 fatcat:r5k76km2qjchriih5yzck46wmq