Crystal resonator, and production method therefor

A production method for a crystal resonator, the method comprising:

• forming first through holes on a first glass plate;
• laminating a second glass plate over the first glass plate;
• forming second through holes at same positions on a third glass plate as the first through holes formed on the first glass plate;
• laminating the third glass plate over the second glass plate;
• forming a crystal resonator piece in a crystal plate and bonding films on both surfaces of the crystal plate;
• laminating the crystal plate over the third glass plate;
• laminating a fourth glass plate over the crystal plate;
• and
• anodically bonding the first through third glass plates, the crystal plate, and the fourth glass plate by application of a voltage between the first glass plate and the fourth glass plate.

A production method for a crystal resonator, the method comprising:

• forming first through holes on a first glass plate;
• laminating a second glass plate on the first glass plate;
• forming a crystal resonator piece in a crystal plate and bonding films on both surfaces of the crystal plate;
• laminating the crystal plate over the second glass plate;
• laminating a third glass plate over the crystal plate;
• and
• anodically bonding the first glass plate, the second glass plate, the crystal plate, and the third glass plate by application of a voltage between the first glass plate and the third glass plate.

Electronic equipment comprising:

• a circuit board including a plurality of electrode pads;
• and
• a crystal resonator mounted over the circuit board, the crystal resonator including
• lower glass plates on which first electrodes are formed so as to extend from side surfaces to a bottom surface of the lower glass plates,
• a crystal plate which is provided over the lower glass plates and on which second electrodes to be coupled to the first electrodes are formed on a surface in contact with the lower glass plates, and
• an upper glass plate which is provided over the crystal plate;
• wherein the side surfaces of the lower glass plates on which the first electrodes are formed are provided with protrusions that extend in parallel with a top surface and the bottom surface of the lower glass plates and that each extend from one end to the other end of each of the side surfaces,
• wherein the first electrodes are formed on the side surfaces that include surfaces of the protrusions, and
• wherein the first electrodes and the electrode pads are bonded by solder provided between the protrusions and the electrode pads.