A display device having a plurality of information symbols for each light source such as an LED chip. The upper surface of each LED chip is divided into several light-emitting areas by a patterned array of electrically isolated, spaced electrodes. The LED chips are mounted to a substrate and can be selectively activated by a beam lead tape, which is also mounted to the substrate. A cover for the display forms thin, reflective light channels, each of which extends laterally from a light-emitting area to one or more optical openings in the cover. The optical openings form the information symbols. The lateral channels direct emissions from the LED chip to the openings via multiple reflection and optical dispersion to uniformly illuminate the openings.
A semiconductor device includes semiconductor elements, a housing for accommodating the semiconductor elements, a resin material arranged in the housing for enclosing the semiconductor elements, and leads connected to the semiconductor elements. Each lead is divided into two portions, that is, an inner portion embedded in the resin material and an outer portion protruding from the resin material. The outer portion of the lead is provided with an enlarged part having a barrier surface directed toward the resin material.
A display device for performing a display by turning on selected ones of a plurality of light sources is disclosed. This display device comprises a substrate having an upper surface disposed with the light sources, a reflecting case mounted to the substrate and provided with a plurality of window holes each corresponding to one of the light sources, and a lower surface terminal portions each provided in a lower surface of the substrate and electrically connected to one of the light sources. The lower surface terminal portions are disposed in a region inward of outer edges of the substrate.
Light emitting diode (LED) display devices having several luminous segments are disposed inside a transparent front support plate and each of a plurality of light emission diodes is associated with one of the respective luminous segment via a light conducting segment. This display device requires little space, is easy and cost-effective to manufacture, and permits great design flexibility in order to make possible an expansion of its area of use. The invention provides to this end that the light conducting segment is formed in the region of the respective luminous segment as a quasi planar light guide structure for the distribution of the light emitted by the respective light emission diode in the region of the luminous segment. The light emitting diode display device in accordance with the invention is suitable as a LED display for numerals and/or symbols.
An operating element can be used to operate or control a household appliance, for example a cook top heating element. A seven-segment display is arranged beneath a cover in the region of a contact surface. A light source and a light receiver are arranged inside respectively of four LED elements of the seven-segment display in two channel-type openings oriented towards the contact surface. The insertion of the light source and receiver into the openings enables the contact surface to the positioned directly above the display and shields the light receiver from scattered light. Placement of a finger on the contact surface results in light from the light source to be reflected and detected by the light receiver, and thus effect control of the household appliance.
A device for providing a number of products. The device may include an enclosure and a number of directional light emitting diodes positioned within the enclosure for illuminating the products.
