A manufacturing method of a circuit board includes: performing a first printing process to form a first insulating layer having a first circuit depressed pattern; performing a second printing process to form a first circuit layer in the first circuit depressed pattern; checking whether a real position of the first circuit layer is diverged from a predetermined position; determining whether the shift level of the position of the first circuit layer is more than a predetermined level; performing the first printing process to form the second insulating layer, wherein when the shift level is more than the predetermined level and the thickness of a second insulating layer to be formed on the first insulating layer is not greater than a tolerance thickness, the second insulating layer has a hole at least partially overlapping the real position; and performing the second printing process to form a conductive plug in the hole.

Pastes are disclosed that are configured to coat a passage of a substrate. When the paste is sintered, the paste becomes electrically conductive so as to transmit electrical signals from a first end of the passage to a second end of the passage that is opposite the first end of the passage. The metallized paste contains a lead-free glass frit, and has a coefficient of thermal expansion sufficiently matched to the substrate so as to avoid cracking of the sintered paste, the substrate, or both, during sintering.

Pastes are disclosed that are configured to coat a passage of a substrate. When the paste is sintered, the paste becomes electrically conductive so as to transmit electrical signals from a first end of the passage to a second end of the passage that is opposite the first end of the passage. The metallized paste contains a lead-free glass frit, and has a coefficient of thermal expansion sufficiently matched to the substrate so as to avoid cracking of the sintered paste, the substrate, or both, during sintering.

A method of making printed circuit board vias using a double drilling and plating method is disclosed. A first hole is drilled in a core, the first hole having a first diameter. The first hole is filled and/or plated with an electrically conductive material. A circuit pattern may be formed on one or two conductive layers of the core. A multilayer structure may then be formed including a plurality of cores that also include pre-drilled and plated via holes, wherein at least some of the pre-drilled and plated via holes are aligned with the first hole. A second hole is then drilled within the first hole and the aligned pre-drilled and plated holes, the second hole having a second diameter where the second diameter is smaller than the first diameter. A conductive material is then plated to an inner surface of the second hole.

Pastes are disclosed that are configured to coat a passage of a substrate. When the paste is sintered, the paste becomes electrically conductive so as to transmit electrical signals from a first end of the passage to a second end of the passage that is opposite the first end of the passage. The metallized paste contains a lead-free glass frit, and has a coefficient of thermal expansion sufficiently matched to the substrate so as to avoid cracking of the sintered paste, the substrate, or both, during sintering.

There is provided an electric connection member having a substrate, an insulating adhesive layer provided on the substrate, and a conductive interconnect, wherein the electric connection member is provided with a recess that opens at a side of the insulating adhesive layer, the conductive interconnect is disposed in the recess, a metal nano-ink is disposed on the conductive interconnect, and all of the metal nano-ink is contained inside the recess.

A light emitting diode (LED) module may include a direct current (DC) voltage node formed on a first layer. The DC voltage node may be configured to sink a first current. One or more devices may be formed on the first layer configured to provide a second current to one or more LEDs. A device of the one or more devices may carry a steep slope voltage waveform. A local shielding area may be formed in a second layer directly below the DC voltage node and the one or more devices. The local shielding area may include a substantially continuous area of conductive material. A conductive via may extend through one or more layers. The conductive via may electrically connect the DC voltage node and the local shielding area.

A transparent circuit board includes a conductive wiring, a transparent insulating layer, and a cover film stacked on the transparent insulating layer. The conductive wiring penetrates the transparent insulating layer along the stacking direction, and is at least partially embedded in the conductive wiring. A blackened layer is formed on a surface of the conductive wiring combined with the cover film, a carbon black layer is formed on a surface of the conductive wiring without the blackened layer, thereby improving a light transmittance of the transparent circuit board.

The object of the invention is to provide a double-sided circuit non-oxide-based ceramic substrate excellent in radiation property and low in cost, and a method for manufacturing the same. A double-sided circuit non-oxide-based ceramic substrate related to the present invention includes a high heat-conductive non-oxide-based ceramic substrate that includes a through hole, a holding layer that is formed on a wall surface of the through hole, and an electro-conductive metal section that is held inside the through hole by the holding layer and does not include an active metal. The double-sided circuit non-oxide-based ceramic substrate related to the present invention preferably includes electrodes (thin film electrodes) that shield end surfaces of the holding layer and end surfaces of the electro-conductive metal section which are exposed to front and back surfaces of the ceramic substrate.

Provided is a vehicle camera module including a lens, circuit board having an image sensor, front housing, and rear housing. The lens has a lens barrel and lens elements assembled. The front housing has front and rear sides to which the lens and the circuit board are assembled, respectively. The rear housing is coupled rearwardly of the front housing to seal the lens and circuit board. The front housing includes posts protruding rearward and a pin protruding distally of the post and having a smaller cross-sectional area than the post. The circuit board includes a plated through-hole configured to at least partially receive the pin. The front housing and circuit board are pre-assembled such that pin and plated through-hole have an assembly clearance, the lens and image sensor are optically aligned in a pre-assembled state, and the assembly clearance is fixedly soldered through a laser solder-jet bonding process.