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Push-along-edge type resistor repair and carving method

A push-type, resistance technology, applied in the direction of resistors, resistance manufacturing, circuits, etc., can solve the problems of sudden change in resistance value, instability, poor resistance to electromagnetic interference, etc., achieve stable working conditions, reduce pulse frequency fluctuations, The effect of improving the anti-electromagnetic interference performance

Inactive Publication Date: 2007-12-12
苏州和普激光设备开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of the resistance value of the repaired resistance, such as easy mutation, poor anti-electromagnetic interference, and instability caused by the laser-etched knife feed track in the current laser resistance adjustment method, by changing the traditional chip resistance laser repair. Engraving the tool path, providing an edge-pushing resistance repairing method that can overcome the above shortcomings

Method used

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  • Push-along-edge type resistor repair and carving method
  • Push-along-edge type resistor repair and carving method
  • Push-along-edge type resistor repair and carving method

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Embodiment 1

[0024] Embodiment 1: Fig. 1 and Fig. 2 show the specific application of the present invention when repairing and engraving chip resistors. As shown in Figure 1, the current general laser trimming system is adopted, including the laser beam generated by the Nd:YAG laser, which is expanded by the beam positioning system and focused on the fixed resistor to be engraved at the focal plane position in the workbench. The dynamic measurement system monitors in real time and outputs feedback control signals to the laser trimming setter program to change the Q frequency, etching size and cutting trimming direction, and automatically correct it; control the laser beam alternately to perform the following two steps when feeding: 1) Take the intersection point of the upper edge curve and the left edge curve of the chip resistor as the starting point, and the width of the laser beam as the width; etch along the upper edge curve track, and the etching movement track is a straight line as sho...

Embodiment 2

[0026]Embodiment 2: Fig. 3 and Fig. 4 show the specific application of the present invention when repairing and engraving arc resistance. As shown in Figure 2, the current general laser trimming system is adopted, including the laser beam generated by the Nd:YAG laser, which is expanded by the beam positioning system and focused on the fixed resistor to be engraved at the focal plane position in the workbench. The dynamic measurement system monitors in real time and outputs feedback control signals to the laser trimming setter program to change the Q frequency, etching size and cutting trimming direction, and automatically correct it; control the laser beam alternately to perform the following two steps when feeding: 1) Take the intersection point of the upper arc edge curve and the left edge curve of the arc-shaped resistor as the starting point, and the width of the laser beam as the width; etch along the upper edge curve, and the etching movement track is shown as an arc as ...

Embodiment 3

[0028] Embodiment 3: Fig. 5 and Fig. 6 show the specific application of the present invention when repairing and engraving circular resistors. As shown in Figure 5, the current general-purpose laser trimming system is adopted, including the laser beam generated by the Nd:YAG laser, which is expanded by the beam positioning system and focused on the fixed resistor to be engraved at the focal plane position in the workbench. The dynamic measurement system monitors in real time and outputs feedback control signals to the laser trimming setter program to change the Q frequency, etching size and cutting trimming direction, and automatically correct it; control the laser beam alternately to perform the following two steps when feeding: 1) Take any point on the outer circumference of the circular resistor as the starting point, and the width of the laser beam as the width, etch clockwise along the curved track of the outer circumference for one week and return to the starting point (s...

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Abstract

The invention discloses edge advancing resistance chiseling method, which adopts the general laser chiseling system to complete the laser generation, position, movement, and resistance monitoring, its characteristics are to control the laser beam to do following two steps of etching alternatively when feeding: 1) the two ends of outer edge along the random original edge of etching resistance are start point and end point, the self wide of laser beam etches along the outer edge of curve track, the resistance material which the laser beam passes is etched to generate new edge curve, and the laser beam stop at end point or return to start point; 2) the laser beam starts at stop point, and advances to new edge curve, and replace the original edge curve in step 1) to etch. The etched resistance has high resistance stability and high anti-electromagnetic interference, and it can secondly etch the slice resistance of functional circuit module of sensor directly to improve the auto adjusting of gain or zero position, and avoid the abrupt change of resistance and the low efficiency of manual matching resistance, and low accuracy.

Description

technical field [0001] The invention relates to a laser resistance adjustment method, in particular to a method for changing the process effect and improving the process precision simply by adjusting the laser cutting track in laser repairing and engraving of chip resistance. Background technique [0002] At present, laser trimming technology is widely used in many fields mainly in the hybrid circuit manufacturing industry, mainly used to adjust the resistance and capacitance in thick and thin film circuits; to perform functional fine-tuning, that is, to adjust certain component parameters, so that the circuit can reach the overall technical index. The most basic of these is the fine-tuning of the resistors. There are two types of resistor trimming: thin-film resistor trimming and thick-film resistor trimming. In many circuits, the resistance value of these resistors is required to be very accurate, and the relative error is required to reach a few thousandths or even a fe...

Claims

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Application Information

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IPC IPC(8): H01C17/242
Inventor 张学忠
Owner 苏州和普激光设备开发有限公司
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