Abstract: Provided is a luminous dial plate structure for watches, relatively high in luminance, sufficiently long in visual time and abundant in ornamental effect. The dial plate structure is composed of a lower plate and an upper member. The lower plate is made of a metal such as brass. The upper surface of the lower plate is coated with a phosphorescence-maintaining luminous agent made of a rare-earth element metal oxide. The surface of phosphorescence-maintaining luminous agent is coated with clear lacquer serving as a sealing material. The upper member is made of a thin transparent or translucent material, on which a time indication scale is provided. The upper member is bonded through an adhesive onto the upper surface of clear lacquer.

Abstract: The method of providing a pair of contact terminals on the back side of an electroluminescent (EL) lamp, of the type which has EL material between front and back conductive layers, which are disposed on a transparent substrate. A bump of conductive material deposited on the front conductive layer is insulated from the back conductive layer for providing a contact terminal on the back of the EL lamp which is connected to the front conductive layer. A preferred embodiment includes the further steps of adding an extension which relocates the back connection to a different place on the back of the EL lamp.

Abstract: An electroluminescent dial for an analog timepiece comprising a flexible transparent substrate, an inner layer comprising electrically conductive material adhered to the substrate, an EL layer comprising a mixture of electroluminescent material in a binder adhered to the inner layer, and an outer layer covering the electroluminescent layer comprising electrically conductive material, the substrate and the layers comprising a single flexible laminated assembly and having a hole therethrough for accommodating the rotatable stem, and includes a tab portion comprising the substrate and the inner layer extending beyond the EL and outer layers. A dial support member comprising a rigid plate substantially the size and shape of the electroluminescent dial supports the dial on one side of the frame.

Abstract: A luminescent featured watch includes a molded plastic case and watchband formed of a luminescent material. A plurality of luminescent and nonluminescent opaque design elements are supported upon the luminescent portions of the watch to provide a change in appearance of the watch between high ambient light and darkened light conditions. The luminescent materials of the watch cause the watch to glow in a darkened environment.

Abstract: An automotive meter comprising a meter case, a dial plate fixedly disposed within the meter case, indicating needles provided in front of the dial plate, meter units respectively for driving the indicating needles according to measured values, and an ultraviolet lamp for irradiating the front surface of the dial plate by ultraviolet rays. The dial plate is formed by printing a grid layer on the backside of a transparent base plate with an ultraviolet ink, printing a ground layer on the grid layer with an ultraviolet ink, and printing dial patterns including graduations and characters on the front surface of the base plate with an ultravviolet ink.

Abstract: A power supply device for a hand with a luminescence element which is adapted to supply electric power to the luminescence element mounted on the hand.

Abstract: A power supply system for luminous hands wherein an hour and a minute hand have electroluminescence elements and a second hand has a light-emitting diode. The power supply system comprises a drive signal generator for generating a mixed signal consisting of a high-frequency signal and a low-frequency signal. An hour hand brush conductor between a fixed member and the hour hand receives the mixed signal. An hour hand filter passes only the low-frequency signal and sends it to the electroluminescence element of the hour hand. A minute hand brush conductor device placed between the hour hand and the minute hand receives the mixed signal from said hour hand brush conductor device. A minute hand filter passes only the low-frequency signal of the mixed signal and sends the low-frequency signal to the electroluminescence element of the minute hand.

Abstract: An electroluminescent device adapted to serve as the dial of a conventional analog timepiece, with a central aperture for the stem carrying the timepiece hand and inscribed on the upper surface thereof with conventional time-indicating indicia, so that it can be read as a normal watch dial.

Abstract: A self-luminescent light source for a liquid crystal display watch characterized by comprising a fluorescent substance layer which has a light reflectivity and which contains radioactive element promethium (.sup.

Abstract: A liquid crystal display device, especially, for use in a liquid crystal display watch is disclosed, which is provided with a liquid crystal display element and a reflector comprising a luminescent phosphor, and only in a limited partial area of the reflector corresponding to a specified display portion which should be visible in the dark or at night in the whole time display area of the liquid crystal display element, the luminescent phosphor includes a radioactive nuclide such as promethium (.sup.147 Pm) or tritium (.sup.3 H).