摘要:
A golf ball having a polytrimethylene ether glycol-based polymer in one or more layers of the ball is disclosed. The polytrimethylene ether glycol polymer is disclosed as being derived from polyether ester elastomers comprising a polytrimethylene ether soft segment; polyether-ester-amide elastomers comprising a polytrimethylene ether soft segment; and polyurethanes and polyurethane-ureas prepared by reaction of (a) polytrimethylene ether glycol, (b) diisocyanate, and (c) diol or diamine chain extender.
摘要:
A shock absorbing handle grip includes a sleeve-like rubber grip body sleeved onto the coupling shaft of the handle of a hand tool, a substantially U-shaped flat packing bar inserted from a rear end opening on the grip body and clamped on the coupling shaft of the handle of the hand tool and an end cap fastened to the rear end opening of the grip body, the end cap, the grip body and the packing bar forming an air bag around the coupling shaft of the handle of the hand tool.
摘要:
A flash Electrically-Erasable Programmable Read-Only Memory (EEPROM) includes a semiconductor substrate, and a plurality of field effect transistor memory cells each having a source, drain, floating gate and control gate formed on the substrate. A controller controls a power source to apply an operational pulse to the drain of a cell, and apply a source to substrate bias voltage to the cell while the operational pulse is being applied thereto, the bias voltage having a value selected to reduce or substantially eliminate leakage current in the cell. The operational pulse can be an overerase correction pulse. In this case, a voltage which is substantially equal to the bias voltage is applied to the control gate for the duration of the overerase correction pulse. The operational pulse can also be a programming pulse. In this case, a voltage which is higher than the bias voltage is applied to the control gate of the selected wordline for the duration of the programming pulse. The bias voltage is preferably applied during both the overerase correction and programming pulses, reducing the power requirements and reducing the background leakage of the cells to a level at which program, read and overerase correction operations can be operatively performed.
摘要:
This invention discloses a semiconductor power device disposed in a semiconductor substrate. The semiconductor power device comprises a plurality of trenches each having a trench endpoint with an endpoint sidewall perpendicular to a longitudinal direction of the trench and extends vertically downward from a top surface to a trench bottom surface. The semiconductor power device further includes a trench bottom dopant region disposed below the trench bottom surface and a sidewall dopant region disposed along the endpoint sidewall wherein the sidewall dopant region extends vertically downward along the endpoint sidewall of the trench to reach the trench bottom dopant region and pick-up the trench bottom dopant region to the top surface of the semiconductor substrate.
摘要:
This invention discloses configurations and methods to manufacture lateral power device including a super-junction structure with an avalanche clamp diode formed between the drain and the gate. The lateral super-junction structure reduces on-resistance, while the structural enhancements, including an avalanche clamping diode and an N buffer region, increase the breakdown voltage between substrate and drain and improve unclamped inductive switching (UIS) performance.
摘要:
A system for an automated dispensing and retrieval kiosk for recorded media includes a kiosk having a plurality of vertical racks arranged in a circular formation, each vertical rack configured for storing a plurality of recorded media. A customer interface allows a customer to select or return a recorded media. A robotic element delivers the selected recorded media from the vertical racks to a media output, at the customer interface. The element also delivers a returned recorded media from a media input at the customer interface to the vertical racks. A computer controls operation of the kiosk, and an internet interface connects the kiosk to the Internet. The kiosk may communicate with a central server and/or other kiosks of a group, to locate a requested recorded media within a kiosk of the group. Once located within the group, the requested media may be reserved for customer pick-up.
摘要:
This invention discloses a method for manufacturing a semiconductor power device on a semiconductor substrate supporting a . drift region composed of an epitaxial layer. The method includes a first step of growing a first epitaxial layer followed by forming a first hard mask layer on top of the epitaxial layer; a second step of applying a first implant mask to open a plurality of implant windows and applying a second implant mask for blocking some of the implant windows to implant a plurality of dopant regions of alternating conductivity types adjacent to each other in the first epitaxial layer; and a third step of repeating the first step and the second step by applying the same first and second implant masks to form a plurality of epitaxial layers, each of which is implanted with the dopant regions of the alternating conductivity types. Then the manufacturing processes proceed by carrying out a device manufacturing process on a top side of the epitaxial layer on top of the dopant regions of the alternating conductivity types with a diffusion process to merge the dopant regions of the alternating conductivity types as doped columns in the epitaxial layers.