摘要:
A bonding structure of a semiconductor package includes: a first conductive member configured to transmit an electrical signal; and a bonding pad configured to be electrically coupled to a surface of the first conductive member and comprising a plurality of sub bonding pads.
摘要:
A stacked semiconductor package includes a plurality of semiconductor chips each including a substrate having one surface, the other surface which faces away from the one surface and side surfaces which connect the one surface and the other surface, through-silicon vias which pass through the one surface and the other surface of the substrate, repair pads which are exposed on the side surfaces of the substrate, and wiring lines which electrically connect the through-silicon vias with the repair pads, the plurality of semiconductor chips being stacked such that through-silicon vias of the semiconductor chips are connected with one another; and interconnections electrically connecting the repair pads of the semiconductor chips.
摘要:
Provided are an anti-static and anti-microbial surface treatment agent including a quaternary ammonium salt compound as an active ingredient and a method of preventing a polymer fiber from developing static electricity by using the surface treatment agent. The quaternary ammonium salt compound has excellent anti-static and anti-microbial effects for the prevention or improvement of static electricity in a polymer fiber. Accordingly, the quaternary ammonium salt compound is suitable for use as a fabric softener, or an anti-static agent, and also, provides anti-microbial effects to a polymer fiber.
摘要:
A semiconductor package module includes a circuit board including a board body having a receiving portion and conductive patterns formed on the board body; a semiconductor package received in the receiving portion and having conductive terminals electrically connected to the conductive patterns and an s semiconductor chip electrically connected to the conductive terminals; and a connection member electrically connecting the conductive patterns and the conductive terminals. In the present invention, after a receiving portion having a receiving space is formed in the board body of a circuit board and a semiconductor package is received in the receiving portion, and a connection terminal of the semiconductor package and a conductive pattern of the board body are electrically connected using a connection member, a plurality of semiconductor packages can be stacked in a single circuit board without increasing the thickness thereby significantly improving data storage capacity and data processing speed of the semiconductor package module.
摘要:
The present disclosure provides an apparatus and a method for preventing an Intermediate Frequency (IF) connector from being corroded in a portable terminal. The apparatus may comprise an IF connector and a load switch that is mounted in a main board. The load switch is configured to communicate with the IF connector and to prevent a reverse voltage from being applied to the IF connector.
摘要:
A bonding structure of a semiconductor package includes: a first conductive member configured to transmit an electrical signal; and a bonding pad configured to be electrically coupled to a surface of the first conductive member and comprising a plurality of sub bonding pads.
摘要:
A printed circuit board includes a body part formed with connection pads on a first surface thereof; and a warpage compensating part formed over the first surface of the body part and having a height that increases from edges toward a center of the warpage compensating part so that an upper surface of the warpage compensating part facing away from the first surface of the body part is convex upward. The warpage compensating part comprises conductive layer patterns formed over the first surface of the body part to be electrically connected to the connection pads; and a solder resist formed over the first surface of the body part so as to expose the conductive layer patterns. The height of the solder resist gradually increases from both edges toward a center of the solder resist.
摘要:
A semiconductor package module includes a circuit board including a board body having a receiving portion and conductive patterns formed on the board body; a semiconductor package received in the receiving portion and having conductive terminals electrically connected to the conductive patterns and an s semiconductor chip electrically connected to the conductive terminals; and a connection member electrically connecting the conductive patterns and the conductive terminals. In the present invention, after a receiving portion having a receiving space is formed in the board body of a circuit board and a semiconductor package is received in the receiving portion, and a connection terminal of the semiconductor package and a conductive pattern of the board body are electrically connected using a connection member, a plurality of semiconductor packages can be stacked in a single circuit board without increasing the thickness thereby significantly improving data storage capacity and data processing speed of the semiconductor package module.
摘要:
A printed circuit board and a flip chip package using the same are designed to minimize thermal stress due to different thermal coefficients present in areas having metal lines and solder resist versus other areas on the printed circuit board. The printed circuit board includes an insulation layer; a first metal line formed on one surface of the insulation layer and having at one end thereof a bump land and a projection which integrally extends from the bump land; a second metal line formed on the other surface of the insulation layer and having at one end thereof a ball land; a via metal line formed through the insulation layer to connect the first and second metal lines to each other; and solder resists formed on the upper and lower surfaces of the insulation layer to expose the bump land and the ball land.
摘要:
A apparatus and method for estimating a sequence of transmitted quadrature amplitude modulation (QAM)-modulated signals and space-time block coded signals using an optimal expectation-maximization (EM)-based iterative estimation algorithm in a multiple-input and multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) mobile communication system. An initial sequence estimation value is produced on the basis of a predetermined initial value using a pilot sub-carrier contained in each of OFDM signals received by a receiving side. A normalized value of a received signal on a channel-by-channel basis is produced by a predetermined equation using orthogonality between the OFDM signals received by the receiving side. At least one subsequent sequence estimation value is produced using the initial sequence estimation value and the normalized value of the received signal on the channel-by-channel basis. If the subsequent sequence estimation value converges to a constant value after an operation of producing the subsequent sequence estimation value is iterated the predetermined number of times, the converged subsequent sequence estimation value is designated as a final sequence estimation value.