Abstract:
A method of producing a chip scale package is disclosed. The method includes dicing a wafer into a plurality of chip arrays, each array including two or more integrated circuit chips. The method further includes mounting each array on a substrate and dicing each array, attached to the substrate, into individual chip scale packages, each individual chip scale package including only one integrated circuit chip.
Abstract:
The invention relates to an integrated circuit including one or more amorphous silicon layers (14, 14a, 15, 15a) for neutralizing charges which occur in various dielectric layers (6) during fabrication. The amorphous silicon layers include dangling silicon bonds which neutralize charges which would otherwise cause isolation breakdown, impair integrated circuit performance and increase manufacturing costs.
Abstract:
The invention proposes a structure (10) intended to be heated comprising a substrate (11 ) for the front face (1 ) deposition of a useful layer intended to receive components for electronics, optics or optoelectronics, the structure (10) furthermore containing doped elements that absorb infrared radiation so as to substantially increase infrared absorption by the structure (10) so that said front face (1) reaches a given temperature when a given infrared power is supplied to the structure (10), characterized in that at least one part of the doped elements have insufficient electrical activity or localization in the structure, such that they cannot disturb the operation of the components. In addition, the invention relates to a method of producing this structure and a method of forming said useful layer in a semiconductor material on the structure.
Abstract:
An improved means and methods for forming multilayer metal electronic devices (10) where the intermetal dielectric (18) is formed of a three layer sandwich. The first metal layer (13) is covered with a dielectric layer (14) formed using plasma assisted oxide deposition or low pressure chemical vapor deposition. This first dielectric layer (14) is covered by a second dielectric layer (15) formed using a spun-on glass. The third dielectric layer (16) is formed by chemical vapor deposition or plasma deposition and is then covered with the second metal layer (17). Substantially improved step coverage is obtained and delamination between the intermetal dielectric (18) and the metal layers (13, 17) is avoided. The dielectric may be tapered-etched for contact holes.
Abstract:
A flexible printed circuit board (FPCB) for fiber optic modules (200) includes a board with multiple bends, forming a structure with sides (306) and a bottom (303). The traces (204) in the FPCB traverse from the opto-electronic chips (210), through the sides of the FPCB, to the module (200) interconnects at the bottom (303). The multi-fold structure allows the FPCB to support a higher number of traces (204) than conventional single-fold FPCB's, and it allows the fanning out of signal traces from the opto-electronic and electronic chips (210) at the front of the fiber-optic module (200), thereby reducing the crosstalk between the traces. This higher number is provided with a FPCB that features a single insulating layer and without the need to criss-cross the traces (204), resulting in improved signal integrity over conventional multi-layer FPCB's.
Abstract:
Disclosed is a method and apparatus for passivating an active layer (505) of a semiconductor device to reduce surface recombination. A semi-insulating, semiconductor material (510) is deposited over the surface of the active layer of the semiconductor device. The semi-insulating material reduces surface recombination without adversely affecting the performance of the semiconductor device. The semi-insulating material may be any number of materials depending on the growth technique used. The semi-insulating material is preferably lattice-matched with the active layer to ensure an adequate bond between the two layers and preferably has an energy band gap that is higher than that of the active layer. The thickness of the semi-insulating material may vary depending upon the circuit fabrication process (515) and preferably has a thickness range of 100 to 1000 Angstroms.
Abstract:
A passivated silicon substrate structure (10) is set forth. A silicon substrate has a surface region (14) covered by a silicon dioxide layer (18) no more than about 1,000 Angstroms thick. A silicon oxynitride layer (20) of no more than about 300 Angstroms thick covers the silicon dioxide layer. The silicon oxynitride layer is produced by reaction of ammonia, hydrazine or methyl amine with an initially thicker silicon dioxide layer. A silicon nitride layer (22) covers the silicon oxynitride layer. The silicon nitride layer is at least about 250 Angstroms thick. It is produced by chemical vapor deposition. A passivation layer as set forth above provides electric insulation and is highly resistant to moisture attack.
Abstract:
A transistor device includes a semiconductor structure, source and drain contacts on the semiconductor structure, a gate on the semiconductor structure between the source and drain contacts, and a surface passivation layer on the semiconductor structure between the gate and the source or drain contact. The surface passivation layer includes an opening therein that exposes a first region of the semiconductor structure for processing the first region differently than a second region of the semiconductor structure adjacent the gate. Related devices and fabrication methods are also discussed.
Abstract:
An improved method for evaluating GaN wafers. RMS analysis of wafer heights obtained by optical interferometric profilometry is combined with an extreme Studentized deviate (BSD) analysis to obtain a map of the wafer surface that more accurately identifies areas on the surface of a GaN wafer having defects that making those areas unsuitable for fabrication of a vertical electronic device thereon such as bumps and/or pits that can lower the breakdown voltage, increase the on-resistance, and increase the ideality factor.