Abstract:
PURPOSE: A method for manufacturing a stacked flash memory cell is provided to prevent a shift of threshold voltage of memory cells by enhancing a charge retention capability of a floating gate. CONSTITUTION: A gate oxide layer is formed on an active region of a semiconductor substrate(200). A structure sequentially stacked a floating gate, a dielectric film of ONO structure and a control gate are sequentially formed on a desired portion of the gate oxide(210-230). An oxide layer made of SiON is formed on the gate oxide layer including the stacked structure by an oxidation processing using N2O gas or NO gas as a source gas(240). An LDD(Lightly Doped Drain) region is formed in the substrate(250). After forming an insulating spacer at both sidewalls of the stacked structure(260), source and drain regions are formed(270).
Abstract:
PURPOSE: A vertical diffusion furnace for manufacturing a semiconductor device is provided to supply uniformly a gas to each wafer by forming an exhausting portion on a slot portion supporting the wafer. CONSTITUTION: A heater portion(50) forms an outer body. A reaction tube(60) is installed at an inside of the heater portion(50). The reaction tube(60) has an exhaust portion for exhausting a supplied gas. A boat(80) is installed at an inside of the reaction tube(60). The boat(80) has an upper plate(81), a lower plate(83), and a multitude of support bar(85). The support bars(85) are installed between the upper plate(81) and the lower plate(83). Slots for supporting edges of wafers are formed on the support bars(85). A guide path(85b) is formed on the boat(80) in order to guide a gas to the reaction tube(60). A boat cap(90) is formed to load the boat(80). A gas inflow path(91) is formed on the boat cap(90).
Abstract:
PURPOSE: A method for forming an oxide material layer in fabricating a semiconductor is provided to minimize a defect caused by particles, by minimizing generation of particles in forming oxide material layers of different thicknesses. CONSTITUTION: A predetermined portion of a silicon substrate(20) is defined to expose a predetermined portion of the silicon substrate. Ions including alkaline metal are implanted into a predetermined portion of the substrate to form an ion region in the substrate. The ion region of the substrate and a region except the ion region are continuously oxidized to form the first oxide material layer(22b) in the region except the ion region. The second oxide material layer(22a) is formed on the ion region through an active reaction caused by the ions implanted into the ion region, having a relatively thick thickness as compared with the first oxide material layer.
Abstract:
본 발명은 게르마늄 나노로드를 구비한 전계효과 트랜지스터 및 그 제조방법에 관하여 개시한다. 개시된 전계효과 트랜지스터는, 기판 상에 형성된 게이트 절연물; 상기 게이트 절연물에 임베드되며, 상기 그 양단이 노출된 적어도 하나의 게르마늄 나노로드; 상기 게르마늄 나노로드의 양단과 각각 연결된 소스 전극 및 드레인 전극; 및 상기 게이트 절연물 상에서 상기 소스전극 및 드레인 전극 사이에 형성된 게이트 전극;을 구비하는 것을 특징으로 한다.
Abstract:
PURPOSE: A gas supply apparatus and a bit of semiconductor device manufacturing equipment using the same are provided to control exactly the flow rate of reaction gas supplied into a reaction furnace by using a flow rate control unit. CONSTITUTION: A bit of semiconductor device manufacturing equipment(100) includes a reaction furnace(110), a loader(140) at one side of the furnace, a gate valve(150) for opening/closing selectively a path between the furnace and the loader, a heater(160) for heating the inside of the furnace, a vacuum pump(180) for sustaining proper pressure in the furnace, a gas storage part(121), a gas mixer(124) for mixing a plurality of reaction gases supplied from the gas storage part with each other, at least two mixed gas supply lines(127,128) connected with the gas mixer, and a mixed gas flow rate control unit. The flow rate control unit is installed on the mixed gas supply lines to control the flow rate of the mixed gas. The flow rate control unit includes a flow rate control valve(130) and a mass flow meter(131) for measuring the flow rate of the mixed gas.
Abstract:
PURPOSE: A method for forming active area of semiconductor device is provided to enhance the reliability of the semiconductor device by easily ensuring an active area to minimize the failure rate. CONSTITUTION: A method for forming active area of semiconductor device comprises a step sequentially a nitration film(14) and an oxidation film(16) on a semiconductor substrate(10) having a bottom film(12) previously formed, and a step performing photoresist etching process in order to ensure an active area. The oxidation film is formed by thermal oxidation process, CVD(chemical vapor deposition) process or heat treatment process.
Abstract:
PURPOSE: A wireless remote control system for controlling a loader part of semiconductor fabrication equipment and a method for operating the same are provided to control a loader portion by using a wireless remote control method. CONSTITUTION: A wireless remote control system is installed at a loader portion(10) having a wire control system in order to control the loader portion(10) by using a wireless remote control method. The wireless remote control system is formed with a local controller(70) a wireless transmitting and receiving function and an RF(Radio Frequency) transmission and reception portion(60). The RF portion(60) is connected with a mechanical control portion(40) for controlling the loader portion(10) in order to provide a remote control signal to the mechanical control portion(40). The RF portion(60) has its own peculiar code to provide a receiving control command to the mechanical control portion(40). A plurality of devices having peculiar codes are controlled by using one local controller(70).
Abstract:
PURPOSE: A vertical diffusion furnace for semiconductor fabrication is provided to form uniformly thickness of layer formed between each region of a wafer by compensating a thermal loss of a lower end region of a boat. CONSTITUTION: A plurality of heater coils(22) are adhered on both sides of a heater(200). The heater coils are used for controlling temperature of the inside of the heater(200). A gas inlet portion(30) injects a gas to the inside of a reaction tube(24) through pipe arrangement installed on one side of the reaction tube(24). The gas outlet portion(32) exhausts the remaining gas from the reaction tube(24). The reaction tube(24) is formed by SiO2 or SiC. The reaction tube(24) is used for reacting a wafer with the gas. A boat(26) is used for transferring the wafer into the inside of the reaction tube(24). A boat cap(28) is adhered to a lower end portion of the boat(26).
Abstract:
The field effect transistor and a manufacturing method thereof are provided to increase the driving speed and decrease the driving voltage by equipping the germanium nano-rods in which the mobility is bigger than the silicon as a channel. The field effect transistor(100) includes the gate oxide(130) formed on the substrate(110); germanium nano-rods(140) in which both ends are exposed; the source electrode(151) and the drain electrode(152) connected with the both ends of the germanium nano-rods; the gate electrode(160) formed on the gate oxide between the source electrode and drain electrode. The germanium nano-rods are embedded in the gate oxide.