Abstract:
An illumination device comprises a holder, a plurality of light emitting elements, a translucent cover and a lamp cap structure. The holder comprises a heat dissipating base body and a carrying unit. The carrying unit is connected to a top portion of the heat dissipating base body and comprises a carrying base body, a circuit pattern and a heat dissipating pattern, the circuit pattern and the heat dissipating pattern are directly formed to a surface of the carrying base body, the circuit pattern has a plurality of mounting positions, the heat dissipating pattern at least extends from a region close to the mounting position to a region where the heat dissipating pattern can contact the heat dissipating base body. The plurality of light emitting elements are respectively provided at the plurality of the mounting positions and establish an electrical connection with the circuit pattern.
Abstract:
One embodiment provides a circuit board having a substrate and an electrode portion which is provided on the substrate. The electrode portion includes: a quadrangular land which is provided on a front surface of the substrate; a solder layer which is laminated on the whole of a front surface of the land; and a pad which is joined to a front surface of the solder layer. When the electrode portion is seen from thereabove, an outer circumferential line of the pad touches each of four sides of the land. Exposed portions where the solder layer is exposed are formed individually at four corners of a front surface of the electrode portion. And, the exposed portions are formed to have the same shape.
Abstract:
The system includes a first printed circuit board including a first transmission line, the first circuit board may be attached to a chassis and a second printed circuit board including a second transmission line, the second circuit board may be attached to the chassis and/or the first printed circuit board and the second transmission line configured to electrically couple power from the first transmission line.
Abstract:
A mounting substrate includes a through-hole 13 formed in a substrate 10, a first land part 21, a second land part 31, a first component attaching part 22, a second component attaching part 32, a conductive layer 14, and a filling member 15 filled into a part of the through-hole 13. A shortest distance allowable value L0 from the center of the first land part 21 to a component 51 is determined on the basis of the volume Vh of a part of the through-hole 15 positioned above a top surface of the filling member 15 on the side of the first land part 21, the length L1 of the component 51 to be mounted to the first component attaching part 22, and the maximum allowable value of the inclination of the component 51 to be mounted to the first component attaching part 22 relative to the first surface 11 of the substrate 10.
Abstract:
An engagement structure for preventing the separation of a resin layer is formed in a contact surface of an insulating substrate in a connecting component, the contact surface being in contact with the resin layer. The resin layer engages with the engagement structure in the contact surface in the insulating substrate in contact with the resin layer, the contact surface forming the side surface of the connecting component.
Abstract:
A display device includes: a glass substrate including a driver circuit and a plurality of connection terminals that is connected to the driver circuit and is arranged in an array, and an elongated FPC, which has a plurality of panel connection terminals that correspond to the connection terminals and which is mounted on the glass substrate, wherein the FPC has a coverlay. The FPC has a chamfered-area end gap between an end portion of the coverlay facing an end face of the glass substrate and a chamfered-area end portion of the glass substrate in a mounted state, wherein the chamfered-area end gap is covered with an insulating resin, and wherein the chamfered-area end gap at a center portion of the FPC is narrower than the chamfered-area end gap at both end portions of the FPC.
Abstract:
A substrate structure includes a substrate, a buffer layer, and a protecting layer. The substrate includes a side surface. The buffer layer is disposed between the side surface of the substrate and the protecting layer, and the hardness of the protecting layer is greater than the hardness of the buffer layer.
Abstract:
According to one embodiment, a lighting device for a moving body includes a substrate that has a base body having a plurality of connection sections on a side surface and a wiring pattern provided on at least one main surface of the base body; a light emitting element that is electrically connected to the wiring pattern; and an adhesive section that is provided between the base body and a body section.The connection sections are at least one of groove sections, concave sections, and convex sections.The adhesive section covers at least a part of the plurality of connection sections.
Abstract:
Provided are a ceramic wiring substrate; a multi-piece ceramic wiring substrate array for providing a plurality of the wiring substrates; and a method for reliably producing the wiring substrate array. The ceramic wiring substrate includes a substrate main body, which has a front surface, a back surface, side surfaces, a groove surface located on a side toward the front surface, and a fracture surface located on a side toward the back surface; and a notch which has a concave shape in plan view, and which is provided on at least one of the side surfaces so as to extend between the front surface and the back surface, wherein, in the side surface having the notch, the boundary between the groove surface and the fracture surface has curved portions on opposite sides of the notch, the curved portions being convex toward the front surface of the substrate main body in side view.
Abstract:
A wiring substrate includes a core layer having a hole penetrating therethrough in a thickness direction thereof, and having a projecting part projecting from an inner wall of the hole toward an inner space of the hole, a plurality of electronic components disposed in the hole and arranged side by side at a spaced interval in a plan view, the electronic components having side portions thereof, the side portions being engaged with the projecting part, and a resin layer filling the hole and supporting the electronic components.