Patent ID: 8115391

Claim:
A hermetic envelope comprising: a first plate; a second plate; a frame provided between the first plate and the second plate, wherein the hermetic envelope has an interior space surrounded by the first plate, the second plate, and the frame, a first bonding part provided between the frame and the first plate to bond the frame and the first plate to each other; a first abutting part which abuts upon the first plate, provided between the frame and the first plate and positioned closer to the interior space than the first bonding part; a second bonding part provided between the frame and the second plate to bond the frame and the second plate to each other; and a second abutting part which abuts upon the second plate, provided between the frame and the second plate and positioned closer to the interior space than the second bonding part, and wherein the second bonding part is positioned closer to the interior space than the first bonding part.