A projection display device includes a screen image measuring arrangement and is subject to unwanted illumination. The aperture antenna includes an antenna substrate, a feed conductor and an antenna ground layer. The circuit board defines a first opening covered by the image sensor. The circuit can be used to program and read multiple bits within a single programmable device. W\u2014Cu alloy having a homogeneous structure fabricated by the present invention shows better performance by being used as a material for high voltage electric contact of a contact braker, a material for heat sink of an IC semiconductor and a shaped charge liner. The metal forming lateral faces of the pad electrode layer diffuses more readily into the first dielectric layer than into the second dielectric layer.