69results about How to "Prevent warpage" patented technology

A CSP includes: a hard board having a first wiring layer with conductive pads; a plurality of conductive elements disposed on at least a portion of the conductive pads; an electronic component having opposite active and inactive surfaces and being mounted on the hard board via the inactive surface; an encapsulating layer disposed on the hard board for encapsulating the conductive elements and electronic component, the active surface of the electronic component and the surfaces of the conductive elements being exposed through the encapsulating layer; a first dielectric layer and a third wiring layer disposed on the encapsulating layer, the third wiring layer being electrically connected to the conductive elements and the electronic component and further electrically connected to the first wiring layer through the conductive elements, thereby obtaining a stacked connection structure without the need of PTHs and using the hard board as a main structure to avoid warpage.

In a stack type battery, stacked positive and negative electrode lead tabs (11, 12) are joined to one another at a location between the current collector terminals and the electrode plates, the positive and negative electrode lead tabs (11, 12) being folded at an intermediate location between positive and negative electrode current collector terminals (15, 16) and positive and negative electrode plates and protruding from the positive and negative electrode plates. A stacked electrode assembly (10) is accommodated in a battery case (18) having flexibility. A first spacer (a first cover portion (52) of an integral-type spacer (5)) is disposed between the battery case (18) and an open side end of the positive and negative electrode lead tabs (11, 12) formed by folding the positive and negative electrode lead tabs (11, 12).

Lifespan of LEDs can be lengthened, and the workability of the printed circuit board during circuit formation and during LED mounting can be improved.

A metal base circuit board, having an insulating layer with a linear expansion coefficient of 60 ppm per degree C. or higher and 120 ppm per degree C. or lower, a metal foil provided on one side of the insulating layer, comprising a metal material with a linear expansion coefficient of 10 ppm per degree C. or higher and 35 ppm per degree C. or lower, a circuit portion and a non-circuit potion having a linear expansion coefficient of 10 ppm per degree C. or higher and 35 ppm per degree C. or lower, and a white film formed on top of the insulating layer, circuit portion, and non-circuit portion, the total sum of the areas of the non-circuit portion and the circuit portion on top of the insulating layer being 50% or higher and 95% or lower relative to the area of the metal foil, and the relation between the linear expansion coefficients of each of the materials being: linear expansion coefficient of insulating layer>linear expansion coefficient of metal foil>linear expansion coefficient of circuit portion and non-circuit portion.

A packaging method comprises the steps of: providing a carrier plate, wherein the carrier plate comprises a plurality of chip regions and cutting regions arranged between the adjacent chip regions, the carrier plate further comprises a first surface, and a plurality of grooves are formed in the cutting regions in the first surface of the carrier plate; providing chips, wherein each chip comprises a functional surface and a non-functional side surface which are opposite to each other, the surface of each functional surface is provided with bumps, and the bumps protrude out of the functional surfaces; fixing the non-functional side surfaces of the chips with the first surface of the carrier plate in the chip regions; forming a plastic packaging layer on the first surface of the carrier plate and the surfaces of the chips, wherein the plastic packaging layer exposes top part surfaces of the bumps; removing the carrier plate after forming the plastic packaging layer; forming a rewiring structure on the surface of the plastic packaging layer and the functional surfaces of the chips; and cutting the plastic packaging layer and the rewiring structure, so that the plurality of chips are separated from one another, thereby forming an independent packaging structure. The yield and reliability of the formed packaging products are improved.

A semiconductor device includes a substrate, a semiconductor chip that is bonded to one of the faces of the substrate via bumps, and has a device formation face facing the one of the faces, and a resin that fills the space between the device formation face of the semiconductor chip and the one of the faces of the substrate. The resin includes: a first resin that is formed in a formation region of bumps placed on the outermost circumference of the bumps, and is formed inside the formation region, and a second resin that is formed outside the first resin. The thermal expansion coefficient of the substrate is higher than the thermal expansion coefficient of the first resin. The thermal expansion coefficient of the second resin is higher than the thermal expansion coefficient of the first resin.

There is provided an endoscope system which can secure appropriate bending stiffness of an insertion portion while maintaining the slide length of an endoscope insertion portion. According to one aspect of one of the present invention, in an endoscope system including an endoscope and an insertion assisting tool in which the endoscope is inserted and which assists the insertion of an endoscope insertion portion into a body, a flexible portion of the endoscope insertion portion includes a projection region which projects from the distal end opening of a tube body when the endoscope insertion portion is located in the distal end position in a movable range with respect to the tube body of the insertion assisting tool, and the projection region includes a bending stiffness change portion in which bending stiffness increases from a first position on the distal end side to a second position on the proximal end side.

Disclosed herein is a multilayer printed circuit board. The multilayer printed circuit board according to the present invention includes: a stack via stacked in an upper portion of a core layer; staggered vias formed at both sides of the stack via and stacked on the core layer; and a solder resist layer stacked in a lower portion of the core layer and stacked on an insulating film except for open regions of the stack via and the staggered vias, such that the plurality of vias formed in the staggered via may increase rigidity to prevent warpage of the multilayer printed circuit board from being generated.

A reflector built in a down light includes a plurality of floodlight openings respectively exposing a plurality of light-emitting elements to a front surface side, a plurality of radial partition walls which respectively partition and surround these floodlight openings, and an inner circumferential partition wall. Each of the partition walls has a ridge line, and the reflector includes a plurality of reflection concave surfaces each which open and widen from a respective one of the plurality of floodlight openings towards ridge lines of the plurality of partition walls which respectively surround the plurality of floodlight openings. The plurality of radial partition walls extend from the center of the reflector towards the outer circumference, and the inner circumferential partition wall is located between the center and the outer circumference.

Disclosed is a substrate for a lighting device that includes an inorganic substrate with a coefficient of thermal expansion (TCE) of 7 to 13 ppm/K and an insulating layer. The insulating layer includes; a first transparent glass insulating layer having a TCE of 8.2 to 9.4 ppm/K; a white glass insulating layer which is on the first transparent glass insulating layer, and which contains, as white pigment, one or two or more of titanium oxide (TiO₂), aluminum oxide (Al₂O₃), silicon dioxide (SiO₂), strontium titanate (SrTiO₂), barium titanate (BaTiO₃), zinc oxide (ZnO), or magnesium aluminate (MgAl₂O₄), and has a TCE of 5.0 to 9.0 ppm/K; and a second transparent glass insulating layer which is on the white glass insulating layer, and which has a TCE of 8.2 to 9.4 ppm/K.

A joint apparatus that joins a processing target substrate and a supporting substrate together, includes: a processing container that is capable of hermetically closing an inside thereof; a joint unit that joins the processing target substrate and the supporting substrate together by pressing the processing target substrate and the supporting substrate via an adhesive; and a superposed substrate temperature regulation unit that temperature-regulates a superposed substrate joined in the joint unit, wherein the joint unit and the superposed substrate temperature regulation unit are arranged in the processing container, A delivery unit for delivering the processing target substrate, the supporting substrate, or the superposed substrate to/from an outside of the processing container is provided in the processing container, and the superposed substrate temperature regulation unit is provided in the delivery unit.

Provided is a set of polarizing plates comprising a front-plate-integrated polarizing plate to be disposed at a viewing side of a liquid crystal cell and a back-side polarizing plate to be disposed at a back side of the cell. The front-plate-integrated polarizing plate includes a front-side polarizing plate and a front plate having a Young's modulus of 2 GPa or more. The set of polarizing plates satisfies the formula: (R_a−F_t)<(F_a−R_t), where F_a and F_t represent ratios of dimensional change observed in the front-side polarizing plate in absorption and transmission axis directions, respectively, after the front-side polarizing plate is heated at 85° C. for 100 hours, and R_a and R_t represent ratios of dimensional change observed in the back-side polarizing plate in absorption and transmission axis directions, respectively, after the back-side polarizing plate is heated at 85° C. for 100 hours.

A lever type connector is provided with a lever assisting in fitting or detaching first and second connector housings thereof. A lever is fitted to the first connector housing. A plurality of projecting parts is provided in a circumference of the lever. A plurality of receiving parts is provided in the first connector housing to slidably engage with the projecting part Engagement between the projecting and receiving parts prevents the lever from deformation and warpage in a rotating operation of the lever for the connecting operation. The projecting parts and the receiving parts are configured so that the projecting parts and the receiving parts are engaged only when the lever is positioned so that the fitting force is large in the rotating operation, and the projecting parts and the receiving parts are not engaged when the lever is positioned in another state in which the fitting force is small.

Disclosed herein is a strip level substrate having a plurality of unit level substrate regions partitioned by unit saw lines, including: a plurality of wiring layers and a plurality of insulating layers that are alternately stacked; and warpage preventing members disposed in unit saw line regions of an insulating layer bonded to a carrier member among the plurality of insulating layers, in order to improve warpage characteristics of the strip level substrate.

A multilayered gas sensing element includes a sensor cell and a ceramic heater which are integrally laminated. The sensor cell has a solid electrolytic substrate containing an electrolytic component serving as a main component of the ionic conductive solid electrolyte. The ceramic heater has a heater substrate containing the insulating ceramic as a main component. The solid electrolytic substrate includes a first electrolytic layer containing the insulating ceramic at a position closest to the ceramic heater, and a second electrolytic layer whose insulating ceramic content is smaller than that of the first electrolytic layer.

This system for producing optical display devices is provided with a laminating device which, for a plurality of optical display components (P) transported on a line, unwinds a belt-shaped optical member sheet (F1) having a width corresponding to the display area of the optical display components from a whole-sheet roll (R1), and, while so doing, cuts the optical member sheet to a length corresponding to the display region to obtain an optical member (F11), and then laminates the optical member onto the optical display component. The laminating device has: a laminating head (32) whereby the optical member held in place by being pasted to an arc-shaped holding surface (32a) is laminated onto the optical display component; a movement device (44) for moving the laminating head and the optical display component relative to each other during lamination of the optical member; and a drive device (42) for driving the laminating head so that the laminating head is tilted along the curve of the holding surface during lamination of the optical member, the laminating head pressing the optical member against the optical display component.

The invention relates to a gear quenching device. The gear quenching device comprises a chassis, a hanger rod perpendicularly mounted on the center of the chassis and a cantilever wing beam, wherein a plurality of spacer bushes are stacked at the outer side of the hanger rod between the cantilever wing beam and the chassis in a sleeving mode; peripheral holes are formed in four outer end parts of the cantilever wing beam; vertical brackets, lower ends of which are connected to the upper surface of the chassis, are formed in the peripheral holes in a penetrating mode; a plurality of sleeves are stacked at the outer side of the vertical brackets between the cantilever wing beam and the chassis in the sleeving mode; and a pair of wedge-shaped cushion blocks is blocked between the sleeves and the vertical brackets. The gear quenching device has the beneficial effects: a cross cantilever wing beam is adopted for suspending a gear, so that the advantages of high efficiency, stability, safety and the like are achieved; suspending, quenching and racking can be efficiently completed by regulating height of the space bushes and height of the cushion blocks, so that parts in the device are fixed and do not shift. Number of loaded gears is increased, so that production efficiency is greatly improved, and production cost is greatly reduced; and the left end and the right end of the gear are uniformly heated, so that the dimension precision of the gear is improved.

An infrared detection device includes a substrate and a heat-type light sensing element. The substrate has a recess, and a frame positioned around the recess. The heat-type light sensing element has a leg and a sensing unit, and the leg is connected onto the frame so that the sensing unit is positioned over the recess. The heat-type light sensing element includes an intermediate layer provided on the substrate, a first electrode layer provided on the intermediate layer, a sensing layer provided on the first electrode layer, and a second electrode layer provided on the sensing layer. The substrate has a linear thermal expansion coefficient larger than that of the sensing layer. The intermediate layer has a linear thermal expansion coefficient decreasing toward the first electrode layer from the substrate.

Provided are a stacked package, method of fabricating a stacked package, and method of mounting a stacked package. A method includes providing an upper semiconductor package including an upper package substrate, upper semiconductor chips formed on a top surface of the upper package substrate, and first solders formed on a bottom surface of the upper package substrate and having a first melting temperature, providing a lower semiconductor package including a lower package substrate, lower semiconductor chips formed on a top surface of the lower package substrate, and solder paste nodes formed on the top surface of the lower package substrate and having a second melting temperature lower than the first melting temperature, and forming inter-package bonding units by attaching respective first solders and solder paste nodes to each other by performing annealing at a temperature higher than the second melting temperature and lower than the first melting temperature.

A method for producing a die for molding a ceramic honeycomb structure, which has molding grooves arranged in a lattice pattern and apertures communicating with the molding grooves for supplying a moldable material, wherein the formation of the lattice-patterned grooves by machining is conducted by a first machining operation for forming pluralities of first parallel grooves, and a second machining operation for forming second grooves crossing the first grooves; wherein the first and second machining operations are conducted by at least 2 passes of grinding or cutting using a rotating tool; and wherein the second machining operation is conducted by up-cutting in the second pass or later, and a method for producing a ceramic honeycomb structure using such a die.

A light guide plate of the invention has a plurality of unit light guide plates that are formed of a transparent resin material and which are joined together. Each of the unit light guide plates has a flat rectangular light exit surface and a back surface that is opposite the light exit surface and which has a parallel groove formed in generally a center and parallel to a side of the rectangular light exit surface. The light guide plate is used with a linear light source fitted in the parallel groove, satisfying the inequality (L₀/280)²·k(14T²+710T)·(−0.65 log S+1.9)≦10, where L₀ is the length (mm) of the light guide plate, k is the linear expansion coefficient [/° C.] of the resin material, Ts is the surface temperature [° C.] of the linear light source that has become stable, S is half of the cross-sectional area [mm²] of the unit light guide plate as it is cut through a plane perpendicular to the parallel groove, and T=Ts−25.