Abstract:
An electrostatic chuck to minimize an arc and a glow discharge during processing of a semiconductor substrate is provided, In one aspect, an electrostatic chuckin a processing chamber includes a body having a first hole for providing a cooling gas to a backside of a substrate to control a temperature of the substrate, an inner electrode for generating an electrostatic force and a dielectric layer. A ceramic block is tightly inserted into a first hole and has a second hole connected to the first hole. A third hole formed through the dielectric layer is connected to the first hole and the second hole. The cooling gas is provided to the backside of the substrate through the first hole or the second hole. Since the first hole is covered with the ceramic block, the generation of an arc or a glow discharge inside the first hole may be minimized, thereby preventing damage to the electrostatic chuck and improving production yields.
Abstract:
An apparatus for heating a substrate of a semiconductor device includes a hot plate, on which a semiconductor substrate is placed, and a heater for heating the hot plate. The hot plate is preferably a composite plate including a plurality of plates having different thermal conductivities from each other. For example, a first plate adjacent to the heater can be made of aluminum, which has a relatively high thermal conductivity. A second plate, laminated on top of the first plate, can be made of titanium or stainless steel, which both have a thermal conductivity lower than aluminum. A composite hot plate as disclosed herein is better able to maintain a constant temperature and a uniform temperature distribution in order to more uniformly heat a substrate and to reduce an amount of energy required for the heating process. In addition, the reliability and productivity of the semiconductor device manufactured by the apparatus can be improved.
Abstract:
A ring applicator device for use in applying an elastic occluding ring to an anatomical tubular structure which comprises an inner cylinder slidably disposed within an outer cylinder, forceps means slidably disposed within said inner cylinder, means for moving said forceps means into and out of the inner cylinder and means for ejecting an elastic ring from the end of said inner cylinder by axially displacing said outer and inner cylinders relative to each other.
Abstract:
A wafer level fan out semiconductor device and a manufacturing method thereof are provided. A first sealing part is formed on lateral surfaces of a semiconductor die. A plurality of redistribution layers are formed on surfaces of the semiconductor die and the first sealing part, and solder balls are attached to the redistribution layers. The solder balls are arrayed on the semiconductor die and the first sealing part. In addition, a second sealing part is formed on the semiconductor die, the first sealing part and lower portions of the solder balls. The solder balls are exposed to the outside through the second sealing part. Since the first sealing part and the second sealing part are formed of materials having thermal expansion coefficients which are the same as or similar to each other, warpage occurring to the wafer level fan out semiconductor device can be suppressed.
Abstract:
An etching composition, a method of forming a metal pattern using the etching composition, and a method of manufacturing a display substrate are disclosed. The etching composition includes about 0.1% by weight to about 25% by weight of ammonium persulfate, about 0.1% by weight to about 25% by weight of an organic acid, about 0.01% by weight to about 5% by weight of a chelating agent, about 0.01% by weight to about 5% by weight of a fluoride compound, about 0.01% by weight to about 5% by weight of a chloride compound, about 0.01% by weight to about 2% by weight of an azole-based compound and a remainder of water. Thus, a copper layer may be stably etched to improve a reliability of manufacturing the metal pattern and the display substrate.
Abstract:
A buttocks intramuscular injection training model is provided. The buttocks intramuscular injection training model includes a hip model having a similar shape to a human hip; injection modules inserted into both sides of the hip model and each being configured to comprise electrode layers to detect a needle and a muscle layer into which injection liquid is injected; a controller connected to the electrode layers to detect a location of the needle; and an input and output device wired or wireless connected to the controller for bidirectional communication with the controller and configured to visibly output the location of the needle.
Abstract:
There is provided a Cardiopulmonary Resuscitation (CPR) simulator enabling repeated defibrillation training to allow a user to practice CPR and use of a defibrillator, and the CPR simulator includes a dummy in a body shape similar to a human body shape; a first magnet installed on a upper right part of a chest of a body of the dummy; a second magnet installed on a bottom left side of the chest of the body of the dummy; a first training pad having a first metal sheet formed on one side thereof and a first electrode pad formed on the other side thereof; and a second training pad having a second metal sheet formed on one side thereof and a second electrode pad formed on the other side thereof.
Abstract:
According to an example embodiment, a position arrangement device includes at least one joint module between a first base and a second base. The at least one joint module is configured to adjust a position of the second base relative to the first base based on elastic flexion in the joint module.
Abstract:
A stackable wafer level package and a fabricating method thereof are disclosed. In the stackable wafer level package, bond pads (or redistribution layers) are arranged on a bottom semiconductor die, and metal pillars are formed on some of the bond pads positioned around the edges of the bottom semiconductor die. A top semiconductor die is electrically connected to the other bond pads, on which the metal pillars are not formed, positioned around the center of the bottom semiconductor die through conductive bumps. The metal pillars and the top semiconductor die are encapsulated by an encapsulant. A plurality of interconnection patterns electrically connected to the metal pillars are formed on the surface of the encapsulant. Solder balls are attached to the interconnection patterns. Due to this stack structure, the wafer level package is reduced in thickness and footprint. Therefore, the wafer level package is highly suitable for mobile applications.
Abstract:
A method of forming a metal pattern on a display substrate includes blanket depositing a copper-based layer having a thickness between about 1,500 Å and about 5,500 Å on a base substrate, and forming a patterned photoresist layer on the copper-based layer. The copper-based layer is over-etched by an etching composition containing an oxidizing moderating agent where the over-etch factor is between about 40% and about 200% while using the patterned photoresist layer as an etch stopping layer, and where the etching composition includes ammonium persulfate between about 0.1% by weight and about 50% by weight, includes an azole-based compound between about 0.01% by weight and about 5% by weight and a remainder of water. Thus, reliability of the metal pattern and that of manufacturing a display substrate may be improved.