Resources Contact Us Home
Method of manufacturing semiconductor device and semiconductor device

Image Number 12 for United States Patent #8084340.

A method of manufacturing a semiconductor device whereby, even in cases where ions are implanted into a shallow region of a semiconductor substrate when a deep well is formed, the influence of the ions on a MOSFET can be removed, thereby eliminating the need for increasing the chip area. A photoresist with a thickness matching the wavelength of exposure light is formed over the semiconductor substrate and then is exposed to the exposure light to form a photoresist pattern with an opening corresponding to a region for forming a first well. Subsequently, using the photoresist pattern as a mask, ions are implanted to form the first well, and after the photoresist pattern is removed, an epitaxial layer is grown over the semiconductor substrate. Consequently, the deep well is virtually located deeper in level than at the time of the ion implantation by an amount corresponding to the thickness of the epitaxial layer.

  Recently Added Patents
Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication syst
Partial response decision feedback equalizer with distributed control
Technique for effectively providing program material in a cable television system
Techniques to manage communications resources for a multimedia conference event
System and method for conditionally sending a request for data to a home node
Apparatus and method for recording reboot reason of equipment
Mobile browser context switching
  Randomly Featured Patents
Control circuit for an electronically commutated motor
Mounting assembly for supporting a hopper and a spreading mechanism on a vehicle
Weather strip insertion mask
Tool box
Polyamide curing agents based on mixtures of polyethylene-amines, piperazines and deaminated bis-(p-aminocyclohexyl) methane
Method of treating the symptoms of menopause and osteoporosis
Coaxial cable connection assembly with a transceiver
Electronic thermostat for heating and cooling system
Gate coupled voltage support for an output driver circuit
Methods and compositions for the treatment of hypotension with arginine free essential and essential amino acids and arginine derivatives