Crystal oscillator and production method of crystal oscillator

Abstract

The invention provides a crystal oscillator and a production method of the crystal oscillator. The crystal oscillator comprises a base, a conductive upper cover arranged on the top of the base, a crystal plate arranged in the base and two pads arranged at the bottom of the base. The base is equipped with a containing cavity located under the conductive upper cover. Two connection welding spots arranged at the bottom of the containing cavity are correspondingly connected with the pads. The crystal plate is arranged in the containing cavity. An electrode arranged on the surface of the crystal plate is connected with one of the connection welding spots. A preset position is arranged on the bottom surface of the conductive upper cover and is located above the crystal plate. Insulation paint is coated at the preset position. Through adoption of the insulation paint at the preset position, the crystal plate and the conductive upper cover are insulated; and the bad problems such as disordered time sequence of a mobile phone due to the short circuit over the ground are effectively solved. The short circuit over the ground results from collision of the crystal plate and the conductive upper cover in the fall-off and rolling processes.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a crystal oscillator and a manufacturing method thereof. Background technique [0002] Crystal oscillator is the collective name of quartz crystal resonators and quartz crystal oscillators. It is made of quartz crystal plates with piezoelectric effect. Its function is to generate the original clock frequency, which is different after being enlarged or reduced by different frequency generators. the bus frequency. Because the crystal oscillator has the advantages of small size, light weight, high reliability, and high frequency stability, it is used in consumer electronics such as mobile phones and pads. [0003] The structure of the current crystal oscillator is as follows figure 1 As shown, it includes a base, a conductive upper cover on the top of the base, a chip inside the base, and two pads on the bottom of the base, and the base is provided with an accommodating cavity under the...

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Problems solved by technology

[0004] In order to overcome the problem in the prior art that the chip is easy to collide with the conductive upper cover and short circuit during the process of falling and rolling, the embodiment of the present invention provides a crystal oscillator and its production method, which can effectively insulate the wafer and the conductive upper cover. , to prevent the chip from colliding with the conductive upper cover to cause a short circuit to the ground, which will lead to bad phenomena such as disordered timing of the mobile phone

[0006] In the crystal oscillator provided by the embodiment of the present invention, the chip is insulated from the conductive upper cover through the insulating varnish on the preset position, which effectively solves the short circuit to the ground caused by the collision between the chip and the conductive upper cover during the process of dropping or rolling. As a result, the mobile phone timing disorder and other undesirable problems

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