A dye mixture comprises: a) at least one pyrroline type dye of formula wherein R1 is H, C1-20alkyl or C2-20alkenyl; and D is aryl; and b) at least one anthraquinone type dye of formula, wherein RB is nORB1; RB1 is C1-6alkyl or C1-6alkoxy-C1-6alkyl; n is 1-6; and ZB is O or NH. The network, the AV signal providing system, the user device and the digital AV signal processing device are in communication with each other via the network. The surface of the gate insulator may be an interface that contacts a channel layer. The gantry member includes an imaging source. The button has at least one rail, a hole defined at top of the rail. A convergence region is provided.