Abstract: A method is provided for forming an integrated circuit (IC) chip package structure. The method includes providing a substrate for an interposer, and forming a conductive interconnect structure in and on the substrate for connecting a group of selected IC dies. The method includes forming warpage-reducing trenches in non-routing regions of the interposer, wherein the warpage-reducing trenches are sized and positioned based on a warpage characteristic to reduce the warpage of the chip package structure. The method also includes depositing a warpage-relief material in the warpage-reducing trenches according to the warpage characteristic to reduce the warpage of the chip package structure, and bonding the group of selected IC dies to the interposer to form a chip package structure.

Abstract: A photo resist layer is used to protect a dielectric layer and conductive elements embedded in the dielectric layer when patterning an etch stop layer underlying the dielectric layer. The photo resist layer may further be used to etch another dielectric layer underlying the etch stop layer, where etching the next dielectric layer exposes a contact, such as a gate contact. The bottom layer can be used to protect the conductive elements embedded in the dielectric layer from a wet etchant used to etch the etch stop layer.

Abstract: The invention provides a novel mattress having massage effect for being cushioned by a human back, and comprising an upholstered seat, a number of springs, a plurality of magnetic stones and an upholstery covering said upholstered seat; wherein, said upholstered seat is provided an accommodating space therein, a lying surface on the top surface thereof, a peripheral stretcher protruded and extended upwardly and provided on at least one end on the lying surface, and a supporting plane formed at the bottom surface of said upholstered seat, the central part of said supporting plane being slightly protruded downwardly; and wherein, said springs are installed in said accommodating space, every two of said springs are linked together, and directions of compression and stretching of each spring are always perpendicular to the lying surface and the supporting plane; further, said magnetic stones are disposed on the lying surface of said upholstered seat, and each of them has a kneading part on the top periphery there