A printed circuit board according to an embodiment includes a first insulating layer, a second insulating layer disposed on the first insulating layer and including a cavity; and a pad disposed on the first insulating layer and having an upper surface exposed through the cavity; wherein the cavity includes a first part including a first inner wall; and a second part including a second inner wall under the first part; and wherein an inclination angle of the first inner wall is different from an inclination angle of the second inner wall.

An example includes: a system board having a surface; bond fingers on a surface of the system board; a semiconductor device on the surface of the system board, the semiconductor device comprising a semiconductor die having a surface, the semiconductor die comprising bond pads on the surface; conductors coupling the bond pads to the bond fingers; and a datum structure on the surface of the system board, the datum structure having openings that form wells with sides around the bond fingers.

An integrated multilayer structure, includes a substrate film having a first side and an opposite second side. The substrate film includes electrically substantially insulating material, a circuit design including a number of electrically conductive areas of electrically conductive material on the first and/or second sides of the substrate film, and a connector including a number of electrically conductive contact elements. The connector is provided to the substrate film so that it extends to both the first and second sides of the substrate film and the number of electrically conductive contact elements connect to one or more of the conductive areas of the circuit design while being further configured to electrically couple to an external connecting element responsive to mating the external connecting element with the connector on the first or second side of or adjacent to the substrate film.

A semiconductor device comprises; a lead frame having leads and a die pad; a printed circuit board including an electrode for the connection of each of the leads and the die pad, a wiring pattern, and an opening exposing a part of a surface of the die pad; the semiconductor element for processing a high frequency signal, mounted on a surface of a metal block bonded to the surface of the die pad exposed through the opening, and connected to the wiring pattern with a metal wire; electronic components connected to the wiring pattern and mounted on a surface of the printed circuit board; and a sealing resin to seal the printed circuit board, the semiconductor element, the electronic components, and the metal wire so as to expose rear surfaces of the leads and the die pad.

A light-emitting unit includes: a wiring board; light-emitting elements on the wiring board; a light reflecting member on the wiring board, the light reflecting member covering a lateral surface of each of the light-emitting elements; wavelength conversion layers each provided on or above an emission surface of a corresponding one of the plurality of light-emitting elements; light reflecting layers on the wavelength conversion layers, respectively; and a protecting layer configured to transmit light and provided on the light reflecting member. The light-transmitting protecting layer covers at least a lateral surface of the wavelength conversion layers and at least a lateral surfaces of the light reflecting layers. An upper surface of the protecting layer has a first recess in a region where the plurality of light reflecting layers are not present in a top view. The first recess includes at least one concave surface.

A semiconductor device package includes a carrier and an encapsulant disposed on the carrier. At least one portion of the encapsulant is spaced from the carrier by a space.

Power electronics arrangement including a printed circuit board and at least one power module fastened on the printed circuit board, which has one or more electronic components potted by a potting compound. At least one module connecting point of the power module is electrically contacted with at least one board connecting point of the printed circuit board by an electrically conductive pin. A base section of the pin is fastened on the module connecting point or on the board connecting point, and the end of the pin opposite to the base section is pressed in the installation position into a contacting opening assigned or assignable to the respective other connecting point.

The present application relates to a circuit board assembly, a photosensitive assembly, a camera module, and preparation methods for the circuit board assembly and the photosensitive assembly. The photosensitive assembly includes a circuit board and a photosensitive chip. The circuit board includes a circuit board main body, a through hole formed through the circuit board main body, a set of circuit board electrical connecting terminals disposed on the lower surface of the circuit board main body, a conducting medium disposed on the circuit board electrical connecting terminals, and a non-conducting adhesive covering the conducting medium. The photosensitive chip includes chip electrical connecting terminals disposed in a non-photosensitive area. The chip electrical connecting terminals of the photosensitive chip is in contact with the conducting medium to be electrically connected to the circuit board electrical connecting terminals, and the photosensitive chip is bonded to the lower surface of the circuit board via the non-conducting adhesive, so that the photosensitive chip is electrically connected to the circuit board. In this way, the photosensitive chip is stably electrically connected to the circuit board with relatively low costs and relatively low process difficulty.

An electric component includes a printed circuit board with each of a pair of surfaces serving as a component mounting surface. The component mounting surface has a predetermined region on which electronic components are coated with a resin. A predetermined one of the electronic components in the region is not covered with the resin at a portion above a predetermined height from the component mounting surface.

There is provided a radio-frequency module and a communication device with which miniaturization can be achieved and quality deterioration can be suppressed. A radio-frequency module includes a mount board on which a ground terminal is disposed, a first chip, a second chip, and a cover (a shield cover). The first chip is disposed on the mount board. The second chip is disposed on the first chip. The cover covers at least a part of the first chip and at least a part of the second chip. The second chip has a first connection terminal (a ground terminal) on an opposite side from the first chip in a thickness direction of the mount board. The cover includes a shield layer connected to the ground terminal disposed on the mount board. The first connection terminal is connected to the shield layer