Abstract: A speaker apparatus comprises a dome type diaphragm comprising: a reinforcing rib; and an edge damper integrally formed with an outer periphery of the dome type diaphragm; and a frame supporting the dome type diaphragm through the edge damper. The reinforcing rib comprises at least one of a groove portion and a ridge portion. The reinforcing rib is extended radially with respect to the dome center portion from a vicinity of a dome center portion of the dome type diaphragm to a dome outer periphery side.

Abstract: A cross-sectionally substantially-semicircular portion of an edge portion adapted to connect an outer periphery of a diaphragm to a speaker frame is configured to have an uneven-thickness structure in which the thickness of the portion gradually decreases toward a sticking portion of an outer peripheral portion of the speaker frame from a sticking portion of the outer periphery of the diaphragm. Thus, the propagation characteristic of vibrations generated on the edge portion is improved. Disturbance is prevented from occurring in an mid-range frequency characteristic due to inverse resonance caused by the edge portion.

Abstract: A method for manufacturing a diaphragm for use in an electroacoustic transducer in a multi-layer structure which includes a first diaphragm layer of synthetic resin molded in a predetermined shape by injection molding and a second diaphragm layer layered in intimate contact on the first diaphragm layer and made of substance different from the first diaphragm layer, includes executing successively a pre-molding step and an injection-molding step, thereby providing the multi-layer structure. The pre-molding step includes attaching a non-molded sheet-like material which is a raw material of the second diaphragm layer to a mating surface of one of the die part of an injection molding die, and closing thereafter the injection molding die to give the sheet-like material a predetermined diaphragm shape. The injection molding step includes injecting synthetic resin material constituting the first diaphragm layer into the injection molding die thus closed thereby to form the first diaphragm layer.

Abstract: A dome-shaped diaphragm includes a dome part which is formed in a dome-like shape and is convex forward in an oscillating direction, a neck part which is provided in continuation to an outer periphery of the dome part, and an edge including a roll part which is formed in a curved shape and is convex forward in the oscillating direction, and continued to the neck part at an inner peripheral edge thereof, wherein the neck part is provided with a curved portion which is convex backward in the oscillating direction, and an outer periphery of the curved portion is smoothly continued to an inner periphery of the roll part.

Abstract: A light emission display panel has a substrate, a plurality of first electrodes on the substrate, a light emission layer on the first electrodes, and a plurality of second electrodes. Each of the second electrodes has a form of a strip film in which partially overlapped portions are provided.

Abstract: A light emission display panel has a substrate, a plurality of first electrodes on the substrate, a light emission layer on the first electrodes, and a plurality of second electrodes. Each of the second electrodes has a form of a strip film in which partially overlapped portions are provided.

Abstract: A speaker device and associated method for producing a speaker device that includes a voice coil and a radiant layer made of a radiant energy emissive material provided on a surface of the voice coil for suppressing the heat generated at the voice coil while simultaneously improving the input durability of the speaker device.

Abstract: A light emission display panel has a substrate, a plurality of first electrodes on the substrate, a light emission layer on the first electrodes, and a plurality of second electrodes. Each of the second electrodes has a form of a strip film in which partially overlapped portions are provided.

Abstract: A loudspeaker has a cylindrical frame, a magnetic circuit formed on the frame, a voice coil disposed in a magnetic gap of the magnetic circuit, a diaphragm. A damper is attached to the frame and supports the voice coil. Leads are connected to both ends of the voice coil. The leads are attached to the damper by stitching.

Abstract: There is provided means for discriminating whether a language code of a designated text information recorded on a recording medium is discriminated whether the read language code is a code of the language that said apparatus is able to display properly, prior to reading the text information, thereby memory can be saved and a reproducing time can be reduced.

Abstract: A supporting mechanism is provided to be moved between a disc insertion opening and a disc storing device, and a driving roller is rotatably mounted on the supporting mechanism for carrying a disc inserted in the opening toward the disc storing device. The supporting mechanism is moved between the opening and the disc storing device, and the driving roller is driven for carrying the disc from the opening to the disc storing device.

Abstract: A display panel using an organic electroluminescent material, includes: a substrate; a plurality of first type electrodes formed on the surface of one side of the substrate; a plurality of electrically insulating partition wall groups each including a plurality of partition walls, partially covering and partially exposing the first type electrodes; a plurality of organic electroluminescent layers formed on exposed portions of the first type electrodes; and a plurality of second type electrodes formed on the organic electroluminescent layers. In particular, each partition wall group has one or more internal spaces each formed between two adjacent partition walls.

Abstract: A speaker apparatus includes a frame having a magnetic circuit, a voice coil bobbin installed in the frame to be magnetically coupled to the magnetic circuit, and a diaphragm movably installed in the frame and fixed to the voice coil bobbin so as to be driven by activating the magnetic circuit. The diaphragm has a positioning portion that had been used for securing the diaphragm relative to the magnetic circuit during an installation of the diaphragm in the frame.

Abstract: An optical pickup device with a compact actuator has a holder that includes an objective lens and a hole formed therein. The holder is supported flexibly by a base. A focusing coil and a tracking coil are attached to at least a portion of the hole. A magnetic circuit that imparts magnetic flux to the focusing and the tracking coils is placed in the hole. The focusing and the tracking coils have magnetically fluxed and unfluxed portions. The magnetically unfluxed portions are positioned on the opposite side of the lens as that of the fluxed portions.

Abstract: An organic EL display panel having a substrate; a plurality of anode layers laminated on the substrate in a laminating direction and arranged with intervals in a direction perpendicular to the laminating direction. A high polymer layer is laminated on the anode layers; an organic EL layer is laminated on the high polymer layer; and a plurality of cathode layers is laminated on the organic EL layer in a laminating direction and arranged with spaces in a direction perpendicular to the laminating direction. The high polymer layer has an energizing region facing the cathode layers, and a gap region is disposed between the adjacent anode layers. The gap region has a conductivity lower than the energizing region. Further, a method for producing the organic EL display panel is disclosed.

Abstract: Prior to reading text information, size information segment is read out, a block position where desired text information has been recorded is calculated on the basis of the read size information segment, and a reading position on a recording medium is determined on the basis of the calculated block position.

Abstract: A loudspeaker has a frame, a magnetic circuit formed on the frame, a voice coil bobbin disposed in a magnetic gap of the magnetic circuit, and a diaphragm connected to the voice coil bobbin at an inner periphery and to the frame at an outer periphery thereof. The diaphragm is folded at a position between the inner and outer peripheries to form an annular ridge. The ridge is projected in an axially inner direction of the loudspeaker.

Abstract: A dome speaker comprises a dome section including a vibrating diaphragm having a dome shape, an annular edge damper section provided surrounding the dome section, an annular coil holder provided between the dome section and the annular edge damper section for holding a voice coil. In particular, the dome section further includes a cap having substantially the same shape as the vibrating diaphragm, said cap being bonded on the said vibrating diaphragm.

Abstract: An organic electroluminescent display device includes an organic electroluminescent element formed on a substrate thereof and having an organic compound layer group sandwiched between cathodes and anodes. The organic compound layer group has laminated electroluminescence functional layers formed of at least one kind of organic compound. Further, the organic electroluminescent display device includes an airtight case that encloses the organic electroluminescent element with a space formed between the airtight case itself and the organic electroluminescent element and isolates the organic electroluminescent element from outside air, and a filler gas filling the space within the airtight case. The filler gas contains at least one kind of combustion supporting gas.

Abstract: An apparatus for driving an electroluminescence device by supplying an alternating current to the electroluminescence device, the apparatus having: a direct voltage source; a constant voltage control device for generating a direct current having a constant voltage on the basis of an output of the direct voltage source; a constant current control device for generating a direct current having a constant current on the basis of the output of the direct voltage source; a selecting device for selecting either one of the direct current having the constant voltage and the direct current having the constant current; and a converting device for converting the selected direct current to the alternating current to be supplied to the electroluminescence device.