Abstract:
Systems and methods for providing 3D wafer assembly with known-good- dies are provided. An example method compiles an index of dies on a semiconductor wafer and removes the defective dies to provide a wafer with dies that are all operational. Defective dies on multiple wafers may be removed in parallel, and resulting wafers with all good dies stacked in 3D wafer assembly. In an implementation, the spaces left by removed defective dies may be filled at least in part with operational dies or with a fill material. Defective dies may be replaced either before or after wafer-to-wafer assembly to eliminate production of defective stacked devices, or the spaces may be left empty. A bottom device wafer may also have its defective dies removed or replaced, resulting in wafer-to-wafer assembly that provides 3D stacks with no defective dies.
Abstract:
In described examples, an electronic system includes a first chip (101) of single-crystalline semiconductor, including a first electronic device embedded in a second chip (102) of single-crystalline semiconductor shaped as a container having a slab (104) bordered by ridges (103), and including a second electronic device. The nested chips are assembled in a container of low-grade silicon shaped as a slab (130) bordered by retaining walls (131) and including conductive traces and terminals. The first electronic device is connected to the second electronic device by attaching the first chip onto the slab of the second chip. The first and second electronic devices are connected to the container by embedding the second chip in the container. The nested first and second chips operate as an electronic system, and the container operates as the package of the system. For first and second devices as field effect transistors, the system is a power block.
Abstract:
A transfer substrate with a compliant resin is used to bond one or more chips to a target wafer. An implant region is formed in a transfer substrate. A portion of the transfer substrate is etched to form a riser. Compliant material is applied to the transfer substrate. A chip is secured to the compliant material, wherein the chip is secured to the compliant material above the riser. The chip is bonded to a target wafer while the chip is secured to the compliant material. The transfer substrate and compliant material are removed from the chip. The transfer substrate is opaque to UV light.
Abstract:
Integrated stacked strata of function die islands are described on a semiconductor device. One example is a multiple die package that includes a base die with a plurality of metal layers over top side circuitry. A first small die is placed on the base die at a first level of the metal layers. A second small die is placed on the base die above the first small die at a second level of the metal layers. The package has a plurality of metal routing lines and vias within the metal layers to connect the first small die and the second small die to the base die and a package to cover the base die and the small dies together.
Abstract:
Substrates may be bonded according to a method comprising contacting a first bonding surface of a first substrate with a second bonding surface of a second substrate to form an assembly; and compressing the assembly in the presence of an oxidizing atmosphere under suitable conditions to form a bonding layer between the first and second surfaces, wherein the first bonding surface comprises a polarized surface layer; the second bonding surface comprises a hydrophilic surface layer; the first and second bonding surfaces are different.
Abstract:
A microelectronic assembly 100 is provided in which first and second electrically conductive pads 108, 106 exposed at front surfaces of first and second microelectronic elements 110, 102, respectively, are juxtaposed, each of the microelectronic elements embodying active semiconductor devices. An electrically conductive element 114 may extend within a first opening 111 extending from a rear surface 118 of the first microelectronic element 110 towards the front surface 103 thereof, within a second opening 113 extending from the first opening 111 towards the front surface 103 of the first microelectronic element 110, and within a third opening 180 extending through at least one of the first and second pads 108, 106 to contact the first and second pads. Interior surfaces 121, 123 of the first and second openings 111, 113 may extend in first and second directions relative to the front surface 103 of the first microelectronic element 110, respectively, to define a substantial angle.
Abstract:
An assembly 100 and method of making same are provided. The assembly 100 can include a first component 105 including a dielectric region 120 having an exposed surface 122, a conductive pad 134 at the surface 122 defined by a conductive element 132 having at least a portion extending in an oscillating or spiral path along the surface 122, and a an electrically conductive bonding material 140 joined to the conductive pad 134 and bridging an exposed portion 137 of the dielectric surface 122 between adjacent segments 136, 138. The conductive pad 134 can permit electrical interconnection of the first component 105 with a second component 107 having a terminal 108 joined to the pad 134 through the electrically conductive bonding material 140. The path of the conductive element 132 may or may not overlap or cross itself.
Abstract:
A power semiconductor package that includes a semiconductor die having at least two power electrodes and a conductive clip electrically and mechanically coupled to each power electrode.
Abstract:
Embodiments of the invention include a microelectronic device that includes an overmolded component having a first die with a silicon based substrate. A second die is coupled to the first die with the second die being formed with compound semiconductor materials in a different substrate. A substrate is coupled to the first die. The substrate includes an antenna unit for transmitting and receiving communications at a frequency of approximately 4 GHz or higher.