Abstract: An image projector system includes a cold light source, a projection lens, a slide retaining unit, and a liquid crystal module. The slide retaining unit is disposed between the cold light source and the projection lens, and is adapted to retain removably a projector slide between the cold light source and the projection lens when the image projector system is operated in a slide projection mode. The liquid crystal module includes a liquid crystal panel retained removably on the slide retaining unit between the cold light source and the projection lens to permit operation of the image projector system in a liquid crystal projection mode.

Abstract: A semiconductor device has a semiconductor die with a rhombic shape and including a substrate with a hexagonal crystal structure, first and second semiconductor films formed on the substrate, and first and second metal contacts formed respectively on the semiconductor films. The hexagonal crystal structure has six equilateral sides. The semiconductor die has two parallel first side edges and two parallel second side edges, which extend in directions that are substantially parallel to respective ones of the six equilateral sides of the hexagonal crystal structure.