Quartz Crystal Frequency Trimming Technology Research Based On Ion Etching

Quartz crystal oscillator is a kind of crystal oscillator which is made based on the piezoelectric effect of crystal. It is characterized in high stability, high precision and low power consumption, thus it has been widely used in a variety of electric appliances. In recent years, a number of manufacturing enterprises make every effort to achieve a great success in the fierce market competition by constantly ameliorate and improve the properties of products and cut down the cost of production. This paper studies the fine adjustment on the ion etching frequency of quartz crystal oscillator by discussing the ion etching technique. Based on experiments, it ultimately defines the setting method of etching rate in the frequency processing of ion etching, so as to improve the processing technique of fine adjustment on the ion etching frequency. Thus the processing efficiency and the quality of products can be improved significantly.The main research achievements in this paper includes: 1. it studies the rules of frequency deviation caused by ion etching in the experiment, and based on this, it also defines the specific setting method for etching rate; and the optimal etching rate has been figured out according to the statistical data in the experiment. 2. By the comparison of the actual etching rate with the given etching rate, the confirmation method for the working condition of ion gun has been achieved, in order to find any unusual circumstances timely and to maintenance and repair the ion gun. The processing efficiency and the quality of products in the process of fine adjustment on the ion etching frequency can be improved directly with the help of these two above-mentioned points.