Abstract: An embedded circuit board, made without gas bubbles or significant internal gaps according to a manufacturing method which is provided, includes an inner layer assembly, an embedded element, and first and second insulating elements. The inner layer assembly comprises a first main portion with opposing first and second surfaces and a first groove not extending to the second surface is positioned at the first surface. A first opening penetrates the second surface, and the first opening and the first groove are connected. The first groove carries electronic elements for embedment. The first insulating element covers the first surface and a surface of the embedded element away from the second surface. The second insulating element covers the second surface and extends into the first opening to be in contact with the embedded element.

Abstract: Methods for forming dummy under-bump metallurgy structures and semiconductor devices formed by the same are disclosed. In an embodiment, a semiconductor device includes a first redistribution line and a second redistribution line over a semiconductor substrate; a first passivation layer over the first redistribution line and the second redistribution line; a second passivation layer over the first passivation layer; a first under-bump metallurgy (UBM) structure over the first redistribution line, the first UBM structure extending through the first passivation layer and the second passivation layer and being electrically coupled to the first redistribution line; and a second UBM structure over the second redistribution line, the second UBM structure extending through the second passivation layer, the second UBM structure being electrically isolated from the second redistribution line by the first passivation layer.

Abstract: In an embodiment, a device includes: a passivation layer on a semiconductor substrate; a first redistribution line on and extending along the passivation layer; a second redistribution line on and extending along the passivation layer; a first dielectric layer on the first redistribution line, the second redistribution line, and the passivation layer; and an under bump metallization having a bump portion and a first via portion, the bump portion disposed on and extending along the first dielectric layer, the bump portion overlapping the first redistribution line and the second redistribution line, the first via portion extending through the first dielectric layer to be physically and electrically coupled to the first redistribution line.

Abstract: A micro electro mechanical system (MEMS) includes a circuit substrate comprising electronic circuitry, a support substrate having a recess, a bonding layer disposed between the circuit substrate and the support substrate, through holes passing through the circuit substrate to the recess, a first conductive layer disposed on a front side of the circuit substrate, and a second conductive layer disposed on an inner wall of the recess. The first conductive layer extends into the through holes and the second conductive layer extends into the through holes and coupled to the first conductive layer.

Abstract: A device includes a memory array, bit line pairs, word lines, a modulation circuit and a control signal generator. The memory array has bit cells arranged in rows and columns. Each bit line pair is connected to a respective column of bit cells. Each word line is connected to a respective row of bit cells. The modulation circuit is coupled with at least one bit line pair. The control signal generator is coupled with the modulation circuit. The control signal generator includes a tracking wiring with a tracking length positively correlated with a depth distance of the word lines. The control signal generator is configured to produce a control signal, switching to a first voltage level for a first time duration in reference with the tracking length, for controlling the modulation circuit. A method of controlling aforesaid device is also disclosed.

Abstract: A shank retaining base for a screwdriver comprises a handle, a shank body, and a base mount wherein the handle has a receiving cavity disposed the center thereof for the base mount to be adapted therein, and the base mount has a polygonal sleeve hole and a round pivot hole disposed at both ends thereof for the shank body, a polygonal rod with tool heads of different sizes disposed at both ends thereof, to be sleeve joined therein. The base mount also includes a journal section with a roller bead embedded at the upper section and a flexible means covering the outer side thereof disposed at the middle section thereof. Via a circular guide facet and equidistant retaining ribs with oblique guide edges disposed at one side of the journal section thereof, the base mount is straightly guided and smoothly pushed with pressure to the receiving cavity therein, preventing the bottom side of the handle from getting cracked or broken up in assembly.

Abstract: A tool receiving box includes a toolbox for a tool with shanks of different sizes to be held therein. The toolbox is made up of a pivotally closed/opened movable lid attached to one side of a receiving box. The toolbox having a plurality of insertion grooves/holes of various sizes preset at large plane surfaces of the receiving box and the movable lid thereon respectively serves as an inserting seat for the shanks stored at the receiving box therein to be vertically located thereby and neatly displayed thereon in repairing work. Thus, the shank required can be easily selected and assembled onto a tool head for use without repeatedly opening/closing the movable lid of the toolbox, facilitating a fast and easy replacement of the shanks thereof, and refraining the toolbox from getting tarnished by oil or dirt in the replacement thereof. Besides, the movable lid is correspondingly closed onto the receiving box thereof, economically saving the space occupied by the toolbox in practical use.

Abstract: A shank retaining base for a screwdriver comprises a handle, a shank body, and a base mount wherein the handle has a receiving cavity disposed the center thereof for the base mount to be adapted therein, and the base mount has a polygonal sleeve hole and a round pivot hole disposed at both ends thereof for the shank body, a polygonal rod with tool heads of different sizes disposed at both ends thereof, to be sleeve joined therein. The base mount also includes a journal section with a roller bead embedded at the upper section and a flexible means covering the outer side thereof disposed at the middle section thereof.

Abstract: A safety door barrier includes a barrier post, barrier body, and a barrier stopper. The barrier post has upper and lower seats at the upper and lower ends thereof respectively. The upper seat has an upper stop with an upwardly slanted bottom and a lower stop with a downwardly slanted top. The lower stop has a lower stop hole, and the lower seat has a lower seat hole. The barrier body has an upper projection and a lower projection corresponding to the lower stop and the lower seat respectively, an upper pivot and a lower pivot extending downwardly from the upper and the lower projections respectively corresponding to the lower stop hole and the lower seat hole, and a latch device composed of a latch and a spring disposed at a lateral side of the barrier body opposite to the upper projection. The barrier stopper provides a latch hole corresponding to the latch device. The barrier body can be raised up and pushed forward or backward to open.

Abstract: A safety door barrier comprises a barrier post, barrier body, and a barrier stopper. The barrier post provides an upper seat and a lower seat at the upper end and the lower end thereof respectively. The upper seat has an upper stop with an upward slant bottom and a lower stop with a downward slant top. The lower stop has a lower stop hole, and the lower seat at a top thereof having a lower seat hole. The barrier body can be flat plate or provide grating and has an upper projection and a lower projection corresponding to the lower stop and the lower seat respectively, an upper pivot and a lower pivot extending downward from the upper and the lower projections respectively corresponding to the lower stop hole and the lower seat hole, a latch device composed of a latch and a spring being disposed at a lateral side opposite to the upper projection. The barrier stopper provides a latch hole corresponding to the latch device.