Abstract: Active photonic crystal devices for controlling an optical signal is disclosed. The devices include a planar photonic crystal with a defect waveguide. In one embodiment of the invention, the propagation of the optical signal is controlled by changing a dimension of the planar photonic crystal structure. In another embodiment, the propagation of the optical signal is controlled by inserting rods into the columnar holes of the planar photonic crystal structure. In a third embodiment of the invention, the propagation of the optical signal is controlled by filling the holes of the planar photonic crystal structure with fluid.

Abstract: Active photonic crystal devices for controlling an optical signal is disclosed. The devices include a planar photonic crystal with a defect waveguide. In one embodiment of the invention, the propagation of the optical signal is controlled by changing a dimension of the planar photonic crystal structure. In another embodiment, the propagation of the optical signal is controlled by inserting rods into the columnar holes of the planar photonic crystal structure. In a third embodiment of the invention, the propagation of the optical signal is controlled by filling the holes of the planar photonic crystal structure with fluid.

Abstract: The invention relates to methods and apparatus useful for making color filters for liquid crystal display panels. A multicolored ink pattern is deposited to a substrate while in a deformable state, flattened during the deposition process, and the deformed, more uniform shape of the printed dot is thereafter retained, preferably by curing during deposition. The transfer layer is preferably formed on a collector roll. A plurality of colored ink patterns is then transferred to the collector roll, preferably from a single pattern roll having multiple patterns thereon, to form the multicolor image that will become the color filter. This multicolored image is then transferred to the substrate.

Abstract: The invention relates to methods and apparatus useful for making color filters for liquid crystal display panels. A multicolored ink pattern is deposited to a substrate while in a deformable state, flattened during the deposition process, and the deformed, more uniform shape of the printed dot is thereafter retained, preferably by curing during deposition. The transfer layer is preferably formed on a collector roll. A plurality of colored ink patterns is then transferred to the collector roll, preferably from a single pattern roll having multiple patterns thereon, to form the multicolor image that will become the color filter. This multicolored image is then transferred to the substrate.

Abstract: Disclosed is a pigment receiving support for electrostatic transfer.The support comprises a base of transparent or non-transparent plastic material and a receiving layer. The receiving layer comprises a surface-active agent and a hydrophilic binder. The concentration of the surface-active agent is at least 1 mg/dm.sup.2, and is at least 2 times greater than that of the hydrophilic binder, preferably 10 times greater than that of the hydrophilic binder.