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He, OR

Jun He, Portland, OR US

Patent application numberDescriptionPublished
20080203388Apparatus and method for detection of edge damages - Embodiments of the invention enable detection of edge damages in semiconductor devices. To this purpose, one or more continuity structures may be provided, where each structure comprises an undulating arrangement disposed between active circuits of the semiconductor device and a perimeter of the metallization layers. The continuity structure(s) forms one or more conductive paths intersecting a plurality of metallization layers in the semiconductor device. A relative change in an electrical characteristic of the continuity structure(s) is monitored to ascertain whether or not an edge damage is present.08-28-2008
20090057842SELECTIVE REMOVAL OF ON-DIE REDISTRIBUTION INTERCONNECTS FROM SCRIBE-LINES - Selective removal of on-die redistribution interconnect material from a scribe-line region is generally described. In one example, an apparatus includes a first semiconductor die having a redistribution layer comprising redistribution dielectric and one or more redistribution metal interconnects, a second semiconductor die coupled with the first semiconductor die, the second semiconductor die having a redistribution layer comprising redistribution dielectric and one or more redistribution metal interconnects, and a scribe-line region disposed between the first semiconductor die and second semiconductor die, the scribe-line region having a majority or substantially all of redistribution dielectric or redistribution metal, or suitable combinations thereof, selectively removed to enable die singulation through the scribe-line region.03-05-2009
20090058540Microelectronic Die Having CMOS Ring Oscillator Thereon And Method of Using Same - A microelectronic die including a CMOS ring oscillator thereon, and a method of using the same. The microelectronic die includes: a die substrate; and a plurality of CMOS ring oscillators on the die substrate, the ring oscillators being disposed at regions of the die substrate that are adapted to exhibit differing strain responses to package-induced stress with respect to one another.03-05-2009
20110103170NOVEL FUSE PROGRAMMING SCHEMES FOR ROBUST YIELD - An embodiment of the present invention is a technique to program a fuse. A program circuit generates first and second currents to program the fuse. The second current is higher than the first current. A control circuit controls generating the first and second currents in succession.05-05-2011
20110156801TAMPER RESISTANT FUSE DESIGN - A tamper resistant fuse design is generally presented. In this regard, an apparatus is introduced comprising a plurality of fuses in an integrated circuit device to store values and a plurality of resistors in parallel to the fuses, wherein each fuse includes a parallel resistor to provide a potential dissipation path around the fuse. Other embodiments are also described and claimed.06-30-2011

Patent applications by Jun He, Portland, OR US

Jun He, Hillsboro, OR US

Patent application numberDescriptionPublished
20080203388Apparatus and method for detection of edge damages - Embodiments of the invention enable detection of edge damages in semiconductor devices. To this purpose, one or more continuity structures may be provided, where each structure comprises an undulating arrangement disposed between active circuits of the semiconductor device and a perimeter of the metallization layers. The continuity structure(s) forms one or more conductive paths intersecting a plurality of metallization layers in the semiconductor device. A relative change in an electrical characteristic of the continuity structure(s) is monitored to ascertain whether or not an edge damage is present.08-28-2008

Zhian He, Beaverton, OR US

Patent application numberDescriptionPublished
20090107836Closed Contact Electroplating Cup Assembly - Embodiments of a closed-contact electroplating cup are disclosed. One embodiment comprises a cup bottom comprising an opening, and a seal disposed on the cup bottom around the opening. The seal comprises a wafer-contacting peak located substantially at an inner edge of the seal. The embodiment also comprises an electrical contact structure disposed over a portion of the seal, wherein the electrical contact structure comprises an outer ring and a plurality of contacts extending inwardly from the outer ring, and wherein each contact has a generally flat wafer-contacting surface. The embodiment further comprises a wafer-centering mechanism configured to center a wafer in the cup.04-30-2009
20100032310Method and apparatus for electroplating - An apparatus for electroplating a layer of metal on the surface of a wafer includes an ionically resistive ionically permeable element located in close proximity of the wafer (preferably within 5 mm of the wafer surface) which serves to modulate ionic current at the wafer surface, and a second cathode configured to divert a portion of current from the wafer surface. The ionically resistive ionically permeable element in a preferred embodiment is a disk made of a resistive material having a plurality of perforations formed therein, such that perforations do not form communicating channels within the body of the disk. The provided configuration effectively redistributes ionic current in the plating system allowing plating of uniform metal layers and mitigating the terminal effect.02-11-2010
20100155254WAFER ELECTROPLATING APPARATUS FOR REDUCING EDGE DEFECTS - Methods, apparatuses, and various apparatus components, such as base plates, lipseals, and contact ring assemblies are provided for reducing contamination of the contact area in the apparatuses. Contamination may happen during removal of semiconductor wafers from apparatuses after the electroplating process. In certain embodiments, a base plate with a hydrophobic coating, such as polyamide-imide (PAI) and sometimes polytetrafluoroethylene (PTFE), are used. Further, contact tips of the contact ring assembly may be positioned further away from the sealing lip of the lipseal. In certain embodiments, a portion of the contact ring assembly and/or the lipseal also include hydrophobic coatings.06-24-2010

Zhian He, Tigard, OR US

Patent application numberDescriptionPublished
20100044236METHOD AND APPARATUS FOR ELECTROPLATING - An apparatus for electroplating a layer of metal onto the surface of a wafer includes an ionically resistive ionically permeable element located in close proximity of the wafer and an auxiliary cathode located between the anode and the ionically resistive ionically permeable element. The ionically resistive ionically permeable element serves to modulate ionic current at the wafer surface. The auxiliary cathode is configured to shape the current distribution from the anode. The provided configuration effectively redistributes ionic current in the plating system allowing plating of uniform metal layers and mitigating the terminal effect.02-25-2010
20100116672METHOD AND APPARATUS FOR ELECTROPLATING - An apparatus for electroplating a layer of metal onto the surface of a wafer includes an ionically resistive ionically permeable element located in close proximity of the wafer and an auxiliary cathode located between the anode and the ionically resistive ionically permeable element. The ionically resistive ionically permeable element serves to modulate ionic current at the wafer surface. The auxiliary cathode is configured to shape the current distribution from the anode. The provided configuration effectively redistributes ionic current in the plating system allowing plating of uniform metal layers and mitigating the terminal effect.05-13-2010
20100147679Electroplating Apparatus with Vented Electrolyte Manifold - Embodiments related to increasing a uniformity of an electroplated film are disclosed. For example, one disclosed embodiment provides an electroplating apparatus comprising a plating chamber, a work piece holder, a cathode contact configured to electrically contact a work piece, and an anode contact configured to electrically contact an anode disposed in the plating chamber. A diffusing barrier is disposed between the cathode contact and the anode contact to provide a uniform electrolyte flow to the work piece, and electrolyte delivery and return paths are provided for delivering electrolyte to and away from the plating chamber. Additionally, a vented electrolyte manifold is disposed in the electrolyte delivery path immediately upstream of the plating chamber, the vented electrolyte manifold comprising one or more electrolyte delivery openings that open to the plating chamber and one or more vents that open to a location other than the plating chamber.06-17-2010