Abstract: An oscillator wafer-level-package structure is provided, comprising a bottom layer, an oscillator crystal and a capping layer. The bottom layer includes an upper plane, the capping layer includes a lower plane, and the oscillator crystal is disposed between the bottom layer and the capping layer and includes at least one cavity. An upper seal ring and a lower seal ring are respectively surrounding the oscillator crystal such that the oscillator crystal is sealed in between the capping layer and the bottom layer by employing the upper and lower seal rings. In addition, a diffusion barrier is further disposed in the upper seal ring and in the lower seal ring for avoiding interface diffusion. Moreover, the present invention adopts the same material for fabricating the capping layer, the oscillator crystal and the bottom layer to achieve an optimal thermal stress result when realizing the packaging structure.

Abstract: A crystal oscillator and a method for fabricating the same is provided. In the method, a crystal package is provided. The crystal package includes a crystal blank and at least one laser-penetrating area. The laser-penetrating area is exposed outside. The crystal package is provided with at least one airtight space therein. At least one getter is formed in the airtight space. The location of the laser-penetrating area corresponds to that of the getter. A laser beam penetrates through the laser-penetrating area to activate the getter, thereby increasing the degree of vacuum of the airtight space.

Abstract: An oscillator wafer-level-package structure is provided, comprising a bottom layer, an oscillator crystal and a capping layer. The bottom layer includes an upper plane, the capping layer includes a lower plane, and the oscillator crystal is disposed between the bottom layer and the capping layer and includes at least one cavity. An upper seal ring and a lower seal ring are respectively surrounding the oscillator crystal such that the oscillator crystal is sealed in between the capping layer and the bottom layer by employing the upper and lower seal rings. In addition, a diffusion barrier is further disposed in the upper seal ring and in the lower seal ring for avoiding interface diffusion. Moreover, the present invention adopts the same material for fabricating the capping layer, the oscillator crystal and the bottom layer to achieve an optimal thermal stress result when realizing the packaging structure.