Abstract: A plasma display apparatus and method of driving the plasma display apparatus are described. The method includes applying a first driving signal to a first scan electrode to effect at least one of a reset period and a sustain period, applying a second driving signal to a second scan electrode to effect at least one of a reset period and a sustain period, and controlling at least one of the first and second driving signals to cause a lag in an initiation of a changing voltage characteristic on the first scan electrode during at least one of the reset period and the sustain period relative to an initiation of a corresponding changing voltage characteristic on the second scan electrode.

Abstract: The object of this invention is to provide a hydraulic control valve for drip hoses, which controls a flow of water according to a water pressure, thus keeping a pressure of water fed to a drip hose constant. The hydraulic control valve includes a hose connector (110) clamped at opposite ends thereof to a branch hose (H/S) and a drip hose (H/N), a water supply path having a larger-diameter path (120a) and a smaller-diameter path (120b), a U-shaped flexible cup (200), and a support ring (300). The larger-diameter path includes a stepped seat (142) having projections (141) and depressions (142). The smaller-diameter path includes an inward projecting step (150). The cup is placed at an end thereof to be near to the inward projecting step, and includes a flange (210). The support ring (300) is fitted into the larger-diameter path to prevent a removal of the cup.

Abstract: The present invention relates to a sapphire/gallium nitride laminate, wherein a curvature radius thereof is positioned on the right side of a first curve plotted from the following functional formula (I): Y=Y0+A·e?(x?1)/T??(I) wherein Y is the curvature radius (m) of a sapphire/gallium nitride laminate, X is the thickness (?m) of a gallium nitride film, Y0 is 5.47±0.34, A is 24.13±0.50, and T is 0.56±0.04. The inventive laminate can be advantageously used in the manufacture of a high quality electronic device.