Abstract:
Disclosed are a liquid chemical supplier for wet treatment and a wet treatment apparatus comprising the same. The liquid chemical supplier is only heated when performing the wet treatment process, not heated in the stand-by state, due to an in-line heater disposed on a liquid chemical supply line for supplying a liquid chemical mixture to a process chamber or a source supply line for supplying source materials constituting the liquid chemical mixture. Accordingly, the operational costs of the liquid chemical supplier can be reduced. On the other hand, the evaporation of the source materials is prevented by constituting the inside of a liquid chemical storage tank as a closed space and increasing the internal pressure. Accordingly, the usage time of the liquid chemical mixture can be increased and an amount of disposal can be reduced.
Abstract:
PURPOSE: A method for manufacturing a semiconductor device including a dual gate insulation layer is provided to prevent the degradation of the reliability of the semiconductor device which includes gate insulation layers with different thicknesses on a high voltage area and a low voltage area. CONSTITUTION: A substrate (110) including a first area and a second area is provided. A first gate insulation layer (130) with a first thickness is formed on the substrate. An interlayer dielectric layer (140) including a first trench and a second trench is formed on the substrate. A second gate insulation layer (180) is formed on the bottom of the first trench of the first area. A high dielectric material (185) is formed on the first and second gate insulating layers. A gate electrode (192) is formed in the first trench and the second trench by planarizing the high dielectric material.
Abstract:
PURPOSE: A method for fabricating a semiconductor device is provided to improve product reliability by forming a thickness of a metal gate formed on an active which is the same as the thickness of a metal gate formed on a second element isolation layer. CONSTITUTION: A first element isolation layer and a second element isolation layer are formed in a semiconductor substrate(S100). A dry cleaning and a wet etching process are performed on the semiconductor substrate(S110). A transistor is formed on the semiconductor substrate(S120). [Reference numerals] (AA) Start; (BB) End; (S100) Form a first and a second element isolation layer on a semiconductor substrate; (S110) Dry-cleaning and wet-etching the semiconductor substrate; (S120) Form a transistor on the semiconductor substrate
Abstract:
PURPOSE: A method for manufacturing a semiconductor device is provided to form compressive stress on a channel region of a PMOS(p-channel MOSFET(metal-oxide-semiconductor field-effect transistor)) by forming a SiGe(Silicon-Germanium) layer in a trench. CONSTITUTION: A gate electrode(120) is formed on a substrate(100). A spacer(140) is formed on a sidewall of the gate electrode. A first auxiliary trench(150) is formed by etching a certain area of the substrate exposed with the gate electrode and the spacer. A sacrificing layer(160) is formed on a lower surface of the first auxiliary trench. A second auxiliary trench is formed by laterally etching the sidewall of the first auxiliary trench.
Abstract:
PURPOSE: A method for cleaning a wafer and a device for performing the same are provided to remove the contaminant on the wafer by applying the ultrasound wave to the front surface of the wafer. CONSTITUTION: A wafer is immersed in a cleaning solution. An interval between the position for applying a first ultrasound wave and a first surface of the wafer is controlled(ST202). The first surface of the wafer is cleaned by applying the first ultrasound wave to the first surface of the wafer(ST204). The interval between the position for applying a second ultrasound wave and a second surface of the wafer are controlled(ST206). The second surface of the wafer is cleaned by applying the second ultrasound wave to the second surface of the wafer(ST208).
Abstract:
The method for forming the semiconductor device is provided to form the trench having the excellent lateral profile by etching the substrate using the aluminum oxide film pattern and the mask pattern as the etching mask. The insulating layer, the conductive film, and the aluminum oxide film and the mask are successively formed on the substrate(100). The aluminum oxide film is etched by using the mask as the etching mask. The preliminary aluminum oxide film pattern(128) is formed to expose the conductive film's surface in the first width. The side of the preliminary aluminum oxide film pattern is etched. The aluminum oxide film pattern is formed, exposing the conductive film surface in the second width which is broader than the first width. The conductive layer pattern(142), and the insulating layer pattern(144) and trench(148) are formed by using the mask and aluminum oxide film pattern as the etching mask.