Abstract:
Provided is an electro-optic modulating device. The electro-optic modulating device includes an optical waveguide with a vertical structure and sidewalls of the vertical structure are used to configure a junction.
Abstract:
Provided is a wafer exposure apparatus used in a semiconductor device manufacturing process, the exposure apparatus including: a reflective mirror for reflecting light provided from a light source; an optical path changer for changing a path of the light provided from the reflective mirror; first mirrors installed at both sides of the optical path changer to change the path of the light; second mirrors installed at both sides of a material to change the path of the light; and third mirrors installed at both sides of a mask to enter the light reflected by the first mirrors to the mask and to enter the light passed through the mask into the second mirrors, whereby it is possible to continuously expose one surface, both surfaces or a specific surface of a wafer in a state that the wafer is once aligned.
Abstract:
Provided is a method of fabricating a T-type gate including the steps of: forming a first photoresist layer, a blocking layer and a second photoresist layer to a predetermined thickness on a substrate, respectively; forming a body pattern of a T-type gate on the second photoresist layer and the blocking layer; exposing a predetermined portion of the second photoresist layer to form a head pattern of the T-type gate, and performing a heat treatment process to generate cross linking at a predetermined region of the second photoresist layer except for the head pattern of the T-type gate; performing an exposure process on an entire surface of the resultant structure, and then removing the exposed portion; and forming a metal layer of a predetermined thickness on an entire surface of the resultant structure, and then removing the first photoresist layer, the blocking layer, the predetermined region of the second photoresist layer in which the cross linking are generated, and the metal layer, whereby it is possible to readily perform a compound semiconductor device manufacturing process, and to reduce manufacturing cost by means of the increase of manufacturing yield and the simplification of manufacturing processes.
Abstract:
The present invention relates to a method of fabricating a high-voltage high-power integrated circuit device using a substrate of a SOI structure in which an insulating film and a silicon layer are sequentially stacked on a silicon substrate. The method comprising the steps of sequentially forming an oxide film and a photoresist film on the silicon layer and then performing a photolithography process using a trench mask to pattern the photoresist film; patterning the oxide film using the patterned photoresist film as a mask and then removing the photoresist film remained after the patterning; etching the silicon layer using the patterned oxide film as a mask until the insulating film is exposed to form a trench; forming a nitride film on the entire surface including the trench, performing an annealing process and depositing polysilicon on the entire surface so that the trench is buried; and sequentially removing the polysilicon and the nitride film until the silicon layer is exposed to flatten the surface, thus forming a device isolating film for electrical isolation between devices within the trench. Therefore, the present invention can effectively reduce the isolation area of the trench between the high-voltage high-power device and the logic CMOS device and can easily control the concentration of a deep well.
Abstract:
Provided is a photodetector in which a transparent nonconductive material having an interface charge and a trapped charge is deposited on a semiconductor surface so as to form a depletion region on the surface of the semiconductor, and the depletion region is employed as an optical detecting region, thereby not only improving detection with respect to light having a wavelength of ultraviolet and blue ranges but also filtering light having a wavelength of visible and infrared ranges, and in which a fabricating process thereof is compatible with a universal silicon CMOS process.
Abstract:
A concrete block construction method, including: manufacturing a plurality of concrete blocks each having a vertical guide hole formed in a vertical direction; preparing a guide member for installing the concrete blocks; forming a lower concrete block structure by installing at least one of the concrete blocks; placing the concrete block subject to be installed on the lower concrete block structure by inserting the installation guide pole into the vertical guide hole of the concrete block subject to be installed; and separating and recovering the guide member for installing the concrete block from the concrete block subject to be installed, after placing the concrete block subject to be installed.