Abstract: A chip package structure is provided. The chip package structure includes a chip. The chip package structure includes a conductive ring-like structure over and electrically insulated from the chip. The conductive ring-like structure surrounds a central region of the chip. The chip package structure includes a first solder structure over the conductive ring-like structure. The first solder structure and the conductive ring-like structure are made of different materials.

Abstract: A fan-out semiconductor device includes stacked semiconductor dies having die bond pads arranged in columns exposed at a sidewall of the stacked semiconductor dies. The stacked dies are encapsulated in a photo imageable dielectric (PID) material, which is developed to form through-hole cavities that expose the columns of bond pads of each die at the sidewall. The through-hole cavities are plated or filled with an electrical conductor to form conductive through-holes coupling die bond pads within the columns to each other.

Abstract: A temperature sensor includes a plurality of temperature coefficient voltage generators, one or more converters and at least one variable voltage or current source. The temperature coefficient voltage generators are used for generating multiple temperature coefficient voltages. The converters, coupled to the temperature coefficient voltage generators, are used for converting the temperature coefficient voltages to digital values. The at least one variable voltage or current source, each coupled to at least one of the temperature coefficient voltage generators, includes a first variable voltage or current source for outputting a first voltage or current in a first time period, and outputting a second voltage or current in a second time period, wherein the second voltage or current is different from the first voltage or current such that there exists a shift between a first voltage-temperature curve in the first time period and a second voltage-temperature curve in the second time period.

Abstract: A display driving circuit, a calibration module, and an associated calibration method are provided. The display driving circuit includes an internal clock circuit and the calibration module. The internal clock circuit generates an internal clock signal. The calibration module includes a counting circuit and a trimming circuit. The counting circuit counts pulses of a reference clock signal to generate a detected reference-clock count and counts pulses of the internal clock signal to generate a detected internal-clock count. The trimming circuit generates a calibration signal to adjust frequency of the internal clock signal when a predefined condition is satisfied. The predefined condition is related to comparison between a first preset count and one of the detected reference-clock count and the detected internal-clock count.

Abstract: A display driving circuit, a calibration module, and an associated calibration method are provided. The display driving circuit includes an internal clock circuit and the calibration module. The internal clock circuit generates an internal clock signal. The calibration module includes a counting circuit and a trimming circuit. The counting circuit counts pulses of a reference clock signal to generate a detected reference-clock count and counts pulses of the internal clock signal to generate a detected internal-clock count. The trimming circuit generates a calibration signal to adjust frequency of the internal clock signal when a predefined condition is satisfied. The predefined condition is related to comparison between a first preset count and one of the detected reference-clock count and the detected internal-clock count.

Abstract: A temperature sensor includes a plurality of temperature coefficient voltage generators, one or more converters and at least one variable voltage or current source. The temperature coefficient voltage generators are used for generating multiple temperature coefficient voltages. The converters, coupled to the temperature coefficient voltage generators, are used for converting the temperature coefficient voltages to digital values. The at least one variable voltage or current source, each coupled to at least one of the temperature coefficient voltage generators, includes a first variable voltage or current source for outputting a first voltage or current in a first time period, and outputting a second voltage or current in a second time period, wherein the second voltage or current is different from the first voltage or current such that there exists a shift between a first voltage-temperature curve in the first time period and a second voltage-temperature curve in the second time period.

Abstract: A stapler includes a main arm having two slots and two pivots, wherein two links have two respective first ends thereof are movably and pivotably connected to the two slots, and two respective second ends of the links are pivotably connected to the two pivots of the main arm. An operation arm having a strike plate is pivotably connected to a base and a magazine is located between the operation arm and the base. By pivoting the main arm downward, the two links are movable in the two slots and drive the operation arm to lower the strike plate to eject the staples in the magazine.

Abstract: A server integrating system contains at least one rack, and the rack contains servers and a rack management board. The rack management board is connected to the chassis management board through a transmission line, in which the chassis management board sends the information of the servers to the rack management board, and the chassis management board passes the data to the rack management board.

Abstract: A computer system contains motherboards, chassis management board and functional components. The motherboards have a micro control unit, and the functional components are electrically connected to the chassis management board, in which the micro control unit processes the data and passes the processed data to the chassis management board through a transmission line. The chassis management board receives and decodes the information from the micro control unit, then the chassis management board transmits the decoded information to the functional elements. The chassis management board also receives and passes the information returned from the functional components to the micro control unit through the transmission line.

Abstract: A stapler includes a main arm having two slots and two pivots, wherein two links have two respective first ends thereof are movably and pivotably connected to the two slots, and two respective second ends of the links are pivotably connected to the two pivots of the main arm. An operation arm having a strike plate is pivotably connected to a base and a magazine is located between the operation arm and the base. By pivoting the main arm downward, the two links are movable in the two slots and drive the operation arm to lower the strike plate to eject the staples in the magazine.

Abstract: A staple gun includes an arm having an elongate hole and a protrusion extends from the first end of the arm. A driving plate has a first hole and a second hole. The protrusion is inserted into the first hole. A strike plate is located beside the driving plate and has a third hole. A resilient plate has a first end extending through the second hole and the third hole. A spring is rested on a top of the first end of the arm. A case includes a fulcrum axle and a fixed axle. The fulcrum axle extends through the elongate hole of the arm and is located behind the driving plate. The fixed axle contacts a top surface of the resilient plate. The effort arm from the fulcrum axle to the front end of the arm is shortened so as to save effort when pivoting the arm.

Abstract: A blade for paper punches includes a hollow tubular body with a passage defined axially therethrough and an inclined edge is defined in a lower end of the body. An angle between the inclined edge and a stack of paper sheet is in a range between 15 to 50 degrees. A spring is located in the passage of the body so as to bias a push rod which is movable in the passage to remove debris from the passage.

Abstract: A paper punch includes a first arm which includes two side portions pivotably connected to two frames on a base and each side portion has a first oval hole. Two second arms are pivotably connected with the two first oval holes by two connection pins and each of the two second arm has a second oval hole. Two punch heads are connected to the two second arms respectively and movably inserted into the two frames. The two side portions of the first arm are pivotably connected to the two respective rear ends of the two frames. The two second oval holes of the two second arms are pivotably connected to the two respective front ends of the two frames. The distance between the connection pin and the first pin is reduced when the first arm is pivoted downward so as to achieve the purpose of saving energy.

Abstract: A paper punch includes a base with two support units and each support unit has lower first holes and higher second holes. A main arm has two extensions and each extension has two lugs. Each lug includes an elongate slot defined therethrough. The main arm is pivotably connected to the higher second holes. Two assistance arms are located between the main arm and the two support units, the two assistance arms are pivotably connected to the lower first holes. Each assistance arm includes two legs and each leg has a protrusion which is movably engaged with the elongate slot corresponding thereto. Two punch head are movably connected to the two support units and can be pushed to punch paper sheets by the assistance arms. The protrusions of the assistance arms move along the elongate slots in the main arm and the punch heads are lowered by the assistance arms.

Abstract: A stapler includes a base having two frames on first end thereof and a magazine and an arm are respectively pivotably connected to the frames. A first link has a first end movably and pivotably connected with a slot defined in the arm and a second end of the first link is movably and pivotably connected to a first end of a second link. A hole is defined through the first link and located between the first and second ends of the first link. A pin extends the through hole and removably rested on the top of the frames. The second link is pivotably the frames at its mediate portion. The arm pivots the first link which pivots the second link so that the second end of the second link generates a significant force to the staples.

Abstract: A stapler includes a base having two frames on first end thereof and a magazine and an arm are respectively pivotably connected to the frames. A first link has a first end movably and pivotably connected with a slot defined in the arm and a second end of the first link is movably and pivotably connected to a first end of a second link. A hole is defined through the first link and located between the first and second ends of the first link. A pin extends the through hole and removably rested on the top of the frames. The second link is pivotably the frames at its mediate portion. The arm pivots the first link which pivots the second link so that the second end of the second link generates a significant force to the staples.

Abstract: A paper punch includes a base with a plurality of frames connected thereto and each frame includes a punch head biased by a spring, the top ends of the punch heads protrude from tops of the frames. A support part is fixed to the base and includes a plurality of connection plates to which an arm, a first link and a second link are respectively connected thereto. The top ends of the punch heads movably extend through the through holes in the support part. The arm includes an elongate recess and two respective rolling ends of the first and second links are movably engaged with the elongate recess. When pivoting the arm downward, the three top ends of the punch heads are respectively pushed by the arm, the first like and the second link.

Abstract: The present invention provides an improved electric stapler structure, structured to include a housing and a staple slot fixing piece. A driving arm is located at one side within a mount corresponding to staple pushing pieces of the staple slot fixing piece. The staple pushing pieces are used to cause a spring piece of a pressure piece to squeeze a staple. Furthermore, a central bearing base is located at another side of the mount, so that when a stop piece of a hook ring separates from an inverted hook portion of the central bearing base, then a groove and buffering of a stop portion is used to block a protruding piece of a blocking piece, thereby preventing the central bearing base from flicking out in a split second due to the elastic force of a pull piece spring, and thus safeguarding safety of the user during use.

Abstract: The present invention provides an improved electric stapler structure, structured to include a housing and a staple slot fixing piece. A driving arm is located at one side within a mount corresponding to staple pushing pieces of the staple slot fixing piece. The staple pushing pieces are used to cause a spring piece of a pressure piece to squeeze a staple. Furthermore, a central bearing base is located at another side of the mount, so that when a stop piece of a hook ring separates from an inverted hook portion of the central bearing base, then a groove and buffering of a stop portion is used to block a protruding piece of a blocking piece, thereby preventing the central bearing base from flicking out in a split second due to the elastic force of a pull piece spring, and thus safeguarding safety of the user during use.

Abstract: A method for making punch heads includes a step of pulling a cylindrical metal material wrapped around a mandrel; a step of cutting the cylindrical metal material into sections; a step of inserting the sections into concavity of a mold set and punching a recess in a first end of each section by a first tool; a step of punching the recess into V-shaped recess and including a punching edge by a second tool; a step of pushing the sections out from the mold set by a pushing rod; and a step of obtaining a punch head.