Abstract: A diaphragm, a static part vibratably supporting the diaphragm in the vibration direction, and a driving part provided at the static part and applying vibration to the diaphragm in response to an audio signal are provided, and the driving part includes a magnetic circuit forming a magnetic gap, a voice coil vibrating in a different direction from the vibration direction of said diaphragm in response to an inputted audio signal and a rigid vibration direction converter part direction-converting the vibration of the voice coil and transmitting the vibration to the diaphragm, and the vibration direction converter part is connected to an attaching counterpart including the diaphragm and the voice coil and includes a hinge part in the proximity of the attaching counterpart, and a contact avoiding part avoiding contact with the hinge part is formed on the face side of the attaching counterpart in the proximity of the hinge part.

Abstract: The present invention is to provide a speaker having desirable sound characteristics with a smaller size, and a speaker unit having the speaker. The speaker unit has the speaker and an attachment unit. The speaker has a case, a magnetic circuit, a diaphragm, and a passage. A first chamber is disposed between an inner surface of an outer case of the case and an outer surface of the magnetic circuit. A second chamber is disposed between the diaphragm and the magnetic circuit. The passage communicates with the first and second chambers and has a groove disposed on a bottom wall of the case.

Abstract: The present invention is to provide a pickup feed device to accurately position an optical pickup in place with miniaturization. The pickup device includes a lead screw attached to a movable chassis, a pickup portion, a rack member, a torsion coil spring, a projection portion, and a recess portion. The pickup portion has a case receiving the pickup. The rack member is fixed to the case. The rack portion disposed on a rack one end portion and a case one end portion are engaged with the lead screw. A rack another end portion has the abut portion abutting an inner edge portion of the movable chassis. The torsion coil spring urges the abut portion toward a case another end portion. The projection portion is disposed on the abut portion and the recess portion is disposed on the case another end portion.

Abstract: A speaker 1 includes: a frame 4; a magnetic circuit 2; and a vibrating unit 3. The magnetic circuit 2 is attached to the frame 4. The vibrating unit 3 is received in the frame 4, and includes a drive cone 14 and a diaphragm 15 vibrated by the magnetic circuit 2. A space surrounded by the drive cone 14, the diaphragm 15 and the frame 4 is sealed. An edge unit 17 is attached to an outer edge of the drive cone 14. The edge unit 17 is in an arc sectional shape, and integrally includes two roll parts 47 arranged coaxially to each other.

Abstract: A flat speaker device capable of emitting loud reproduced sound with a relatively simple configuration is provided. The speaker device includes a diaphragm, a frame supporting the diaphragm vibratably in the vibration direction, a magnetic circuit disposed in the frame, and a driving member for driving the diaphragm. The driving member includes a voice coil movably disposed in a magnetic gap of the magnetic circuit, a driving part formed movably in a direction different from the vibration direction of the diaphragm, and an angle conversion and transmission part, one end of which is angle-variably joined to the driving part and another end of which is angle-variably joined to the diaphragm. The angle conversion and transmission part has rigidity and is obliquely disposed with respect to each of the vibration direction of the diaphragm and the moving direction of the driving part.

Abstract: According to an aspect of the invention, there is provided a speaker apparatus including: a speaker frame; and a connection terminal for electrically connecting to an outside of a speaker, an axis line of the connection terminal being arranged along a tangential line direction of a circumference of the speaker, the connection terminal being not projected to an outer side in a diameter direction of the speaker from the speaker frame.

Abstract: To provide a thin speaker device a voice coil itself is made thin and vibration of the voice coil is efficiently transmitted to a diaphragm. The voice coil is used for a speaker device in which the vibration in one axial direction of the voice coil is transmitted to the diaphragm via a rigid vibration direction converter part, and the diaphragm is vibrated in a direction different from the one axial direction. The voice coil is formed with planarly and annularly wound conducting member and has rigidity at least in the vibration direction along the planar direction.

Abstract: Treating light emitting elements 2 in all the display pixels in a light emitting display panel as objects, a maximum value of the forward voltages is drawn by a multi-input comparator 3a and a peak hold circuit 3b. Based on the maximum value of the forward voltages, a voltage boost circuit 6 switching operates a power FET to supply a boosted output by this operation to a constant current circuit 1 as the operational voltage VH. In the case where the maximum value of the forward voltages increases due to trouble or the like and based on this increment the operational voltage VH excessively increases, the operation of the voltage boost circuit 6 is stopped by a control output from an analog comparator 7a which functions as voltage limiter.

Abstract: A flat speaker device capable of emitting loud reproduced sound with a relatively simple configuration is provided. The speaker device includes a diaphragm, a frame supporting the diaphragm vibratably in the vibration direction, a magnetic circuit disposed in the frame, and a driving member for driving the diaphragm. The driving member includes a voice coil movably disposed in a magnetic gap of the magnetic circuit, a driving part formed movably in a direction different from the vibration direction of the diaphragm, and an angle conversion and transmission part, one end of which is angle-variably joined to the driving part and another end of which is angle-variably joined to the diaphragm. The angle conversion and transmission part has rigidity and is obliquely disposed with respect to each of the vibration direction of the diaphragm and the moving direction of the driving part.

Abstract: A drive cone 11 and a diaphragm 14 are integrally driven by a voice coil 6 movably disposed in a magnetic gap 5. Peripheral edge portions of the drive cone 11 and the diaphragm 14 are supported by a frame 12 via different edge portions 13 and 15, respectively. The drive cone 11 is provided with a rising-up portion 11a which rises up toward an acoustic radiation direction from a inner circumferential end, and a rising-down portion 11b which rises down toward a direction reverse to the acoustic radiation direction. An inner circumferential edge of the diaphragm 14 is fixed at an annular top formed between the rising-up portion and the rising-down portion. Moreover, a first rib 11c and a second rib 11d are formed on the drive cone 11 in such a manner as to rise up toward the acoustic radiation direction integrally with the drive cone. The diaphragm 14 is supported also at the tips of the ribs.

Abstract: A speaker device includes a damper allowing high linearity. The speaker device includes a vibration body including a damper and a voice coil bobbin (bobbin), and a magnetic circuit having a plate. The damper has a first member arranged opposite the plate, and a second member projecting on a side of the plate from the first member. The first member has a movable part elastically supporting the bobbin. The movable part is a flat plate, and behaves with respect to a bent part provided between the movable part and the second member with movement of the bobbin in an acoustic radiation direction and reverse. Therefore, when a constant force is given to the damper via the voice coil, a displacement of the damper with respect to a rest position can be substantially similar in such a case that the damper behaves in the acoustic radiation direction and the reverse.

Abstract: A voice coil 6 is movably disposed in a magnetic gap 5. A drive cone (first diaphragm) 11 and a diaphragm (second diaphragm) 14 are integrally driven by the voice coil 6. Peripheral edge portion of the drive cone 11 and the diaphragm 14 are supported by a frame 12 through edge portions 13 and 15, respectively. An annular adhesive receiver 8 is disposed in a peripheral surface of a voice coil bobbin 7 around which the voice coil 6 is wound, and an inner peripheral edge 11a of the drive cone 11 is accommodated in the adhesive receiver 8. The drive cone 11, the adhesive receiver 8 and the voice coil bobbin 7 are connected to each other by an adhesive filled into the adhesive receiver 8.

Abstract: [Problem to be solved] An object is to provide an EL display panel which can make a non-display area on the outermost circumference of the panel area unobtrusive without causing any deterioration of the material of EL devices. [Solving Means] The EL display panel with a plurality of electroluminescent devices is provided, on its front transparent substrate, with an optically excited layer including a photoluminescent material. The optically excited layer is disposed at a position corresponding to each electroluminescent device disposed on the outermost circumference among the electroluminescent devices.

Abstract: A vibration direction converter part for speaker device direction converting a vibration of a voice coil supporting part supporting a voice coil, and vibrating a diaphragm in the direction different from the direction of the vibration of the voice coil supporting part, has a rigid link part angle-variably and obliquely disposed between the voice coil supporting part and the diaphragm, and hinge parts formed at both end parts of the link part. The hinge part is formed with a bendable continuous member continuing between both side parts across the hinge part.

Abstract: In a speaker device, cutting wiring electrically connected to a conductive wire of an electronic component and a voice coil, and the conductive wire and the wiring are electrically connected without a speaker terminal lug. The speaker device includes wiring electrically connected to the voice coil, an electronic component having a component wire, and a frame. The frame has a conductive wire fixing part for fixing the conductive wire, and the conductive wire is fixed to the conductive wire fixing part to be directly connected to the wiring. Thereby, even if a vibration is transmitted to the frame at the time of driving the speaker device, the conductive wire never vibrates, and the conductive wire does not pull the wiring. Therefore, the conductive wire and wiring are not cut. Also, since the conductive wire is the speaker terminal lug, cost of the speaker device can be reduced.

Abstract: A first resistance element (R1) and a second resistance element (R2) are added to a pixel circuit (1) in which an organic EL element (E1) is lighted and driven by a control TFT (T1) and a drive TFT (T2). That is, an anode power supply wiring (a1) and a scanning wiring (s1) are connected through the first resistance element (R1), and a cathode power supply wiring (k1) and a data wiring (d1) are connected through the second resistance element (R2). A test anode voltage (VH1) and a test cathode voltage (VL1) are applied respectively to the anode power supply wiring and the cathode power supply wiring, whereby pixels are lighted and driven. Consequently, whether or not the pixel circuit (1) is normally operated can be verified.

Abstract: An organic EL panel forming light-emitting elements on a substrate includes lower electrode lines stripe-formed on the substrate, upper electrode lines stripe-formed so as to cross the lower electrode lines, an organic EL element laminating an organic layer including a light-emitting layer between the lower electrode lines and the upper electrode lines in the crossing part of the lower electrode lines and the upper electrode lines, extracting terminals electrically connected to the respective upper electrode lines and formed outside the light-emitting element forming area, a common organic layer formed so as to cover at least the overall side edges of the lower electrode lines within the light-emitting element forming area, and a cathode separator stripe-formed on the common organic layer within the light-emitting element forming area so as to insulate-segment the upper electrode lines with the end part extending to the extracting terminals.

Abstract: A voice coil bobbin, which transmits a motive force from the voice coil wound around the bobbin to a diaphragm, includes a main part, a reinforcement part formed on the surface side of the main part, and a middle part formed between the main part and the reinforcement part and made of a material which has a lower density than the other two parts, preferably a non-woven cloth. Thus, there can be provided with the simple-design, high-rigidity voice coil bobbin with high internal loss and a speaker system capable of high-quality sound reproduction.

Abstract: According to an embodiment of the invention, there is provided a speaker apparatus includes: a voice coil bobbin; and a diaphragm that is vibrated by the voice coil bobbin, the diaphragm including an edge portion at an outer circumference of the diaphragm, the edge portion including at least two ridge portions protruding forward.

Abstract: It is an object of the present invention to use a simplified structure to improve a strength of a neck portion of a conical diaphragm in the vicinity of a voice coil fixing section, thereby inhibiting an undesired dividing vibration in a speaker device. The speaker device of the present invention comprises: a generally conical diaphragm having an opening formed in a generally central position thereof; a voice coil bobbin fixed in the inner circumferential portion of the foregoing opening of the diaphragm; and a diaphragm reinforcing annular member disposed near a fixing section fixing together the diaphragm and the voice coil bobbin.