A Method for Determining the Parallel Position of a Single Chip

Abstract

The invention provides a parallel position determination method of a single chip. The parallel position determination method of the single chip comprises the steps of 1, determining an image templateand coordinate of an image template alignment point; 2, finding out a chip image of a corresponding position by the image template; 3, comparing the coordinate of the image template alignment point with coordinate of a chip image alignment point to obtain an angle deviation value between the chip image and the image template and a deviation value between the chip image alignment point and the image template alignment point so as to obtain coordinate A (m, n) of the chip image alignment point A and an angle Beta of the alignment point A in a coordinate system; and 4, obtaining coordinate B (x,y) of the chip image alignment point when the chip image alignment point is rotated to a parallel position according to the angle deviation valve and the coordinate deviation value of the chip image alignment point A. According to the parallel position determination method provided by the embodiment of the invention, straightening calculation is performed on an arbitrary alignment point, the parallel position of the chip is conveniently and rapidly determined, the alignment time is reduced, and the alignment accuracy is improved.

Description

technical field [0001] The invention relates to the field of dicing machines, in particular to a method for determining the parallel position of a single chip. Background technique [0002] In the field of semi-automatic scribing technology, semi-automatic scribing equipment is usually used to calibrate the chip position visually to find out the position and angle of the first chip. This method is fast and easy to operate. However, manual operation is required when the chip is placed on the workbench, resulting in a certain range of deviations in the placement position and angle, resulting in the need to search for alignment points in a wide range during identification, increasing the alignment time and reducing production efficiency. At the same time, the traditional chip position is determined using the first row straightening algorithm. This method requires two chips at the first and the last. When the chip is placed at a large angle, it is easy to cause the left and righ...

AI Technical Summary

Problems solved by technology

However, manual operation is required when the chip is placed on the workbench, resulting in a certain range of deviations in the placement position and angle, resulting in the need to search for alignment points in a wide range during identification, which increases the alignment time and reduces production efficiency.

At the same time, the traditional chip position is determined using the first row straightening algorithm. This method requires two chips at the first and the last. When the chip is placed at a large angle, it is easy to cause the left and right sides of the chip to find points that are not in the same row, resulting in the chip being straightened. errors, reducing alignment accuracy and reliability

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