A method of producing a piezoelectricelectrostrictive device in which a piezoelectricelectrostrictive element including a substantially trapezoidal laminate having narrower and wider surfaces lying substantially in parallel to each other and first and second surfaces opposed to each other between the narrower and wider surfaces. The method includes providing a circuit board in a shape of a long strip, printing a bonding layer, mounting electronic inserts, heating up the circuit board, assembling a heat dissipation seat, assembling a translucent cover and assembling an end cap, thereby accomplishing the lamp tube. For one embodiment, the display of a video frame is maintained by interrupting the refreshing of the frame buffer and the interactive link stream.