Abstract: The present disclosure relates to a radio frequency (RF) sensor and a method for monitoring plasma status. The RF sensor includes a collector configured to collect, as sensing data, an induced electromotive force induced during a plasma process; and a processor configured to record the induced electromotive force as a function of time, perform Fourier transformation on the recorded induced electromotive force function to derive an amplitude value of an n-th harmonic (where n is a natural number equal to or greater than 1), and apply the derived amplitude value and a setting value of plasma equipment identified at the time of sensing data generation to an artificial intelligence algorithm to derive prediction data capable of monitoring plasma status and plasma process status. The RF sensor may also be applied in other embodiments.

Abstract: Disclosed are a dual surface-treated injection molding article, which is manufactured by dually surface-treating an injection molding substrate formed of a light-transmissive semi-transparent or transparent material in such a manner that a metallic appearance is expressed or any of a logo, a pattern, an ornamental design, and a picture is formed on each of inner and outer surfaces of the injection molding substrate, and a method of manufacturing the same.

Abstract: The present invention relates to a pipe joint structure for a semiconductor processing, comprising: a first pipe joint; a second pipe joint; a gasket inserted into adjacent surfaces of the first pipe joint and the second pipe joint; and a screw for bringing the adjacent surfaces of the first pipe joint and the second pipe joint into close contact with the gasket, wherein the first pipe joint has an annular indented groove formed in the center of the adjacent surface thereof, the second pipe joint has a protrusion portion formed on the adjacent surface thereof so as to correspond to the indented groove, and the gasket has a second protrusion portion and a second indented groove which are respectively formed on both side surfaces thereof so as to correspond to the indented groove and the protrusion portion.

Abstract: A method for finishing an exterior surface of an injection-molded product is provided, in which a metal layer is formed on the exterior surface of the injection-molded product, a photoresist layer is formed on the metal layer, a photomask is placed on the photoresist layer, light is projected onto the photomask, and remaining parts of the metal layer and the photoresist layer except for parts corresponding to a pattern formed on the photomask are removed by etching.

Abstract: A surface coating method for an exterior part includes positioning one or more exterior part preforms, which are objects to be surface-coated, within a deposition chamber capable of revolution and rotation; positioning one or more tablets containing a coating component on an evaporation device installed within an area surrounded by the revolution trace of the exterior part preforms; and depositing a coating layer to a surface of each of the exterior part preforms by evaporating the tablets while revolving and rotating the exterior part preforms. The surface coating method and device conduct the rotation and revolution of objects to be coated in while proceeding with a coating step, whereby an evaporated coating component can be uniformly diffused over the entire deposition chamber, and a uniform coating layer can be formed on the entire surface of each of the objects to be coated.

Abstract: A method for finishing an exterior surface of an injection-molded product is provided, in which a metal layer is formed on the exterior surface of the injection-molded product, a photoresist layer is formed on the metal layer, a photomask is placed on the photoresist layer, light is projected onto the photomask, and remaining parts of the metal layer and the photoresist layer except for parts corresponding to a pattern formed on the photomask are removed by etching.

Abstract: Disclosed are a dual surface-treated injection molding article, which is manufactured by dually surface-treating an injection molding substrate formed of a light-transmissive semi-transparent or transparent material in such a manner that a metallic appearance is expressed or any of a logo, a pattern, an ornamental design, and a picture is formed on each of inner and outer surfaces of the injection molding substrate, and a method of manufacturing the same.

Abstract: A method of fabricating an injection-molded product includes: manufacturing an injection-molded material using a mold; forming a metal layer on an inner or outer surface of the injection-molded material; and removing a portion of the metal layer using a laser, and forming a pattern. Since the injection-molded product fabricated through the method has pattern with a metallic feeling, it can provide a metallic feeling of a high brightness that cannot be realized by a method such as printing and can provide a cubic feeling due to removal of a metal layer. The method provides portable products such as cases for cosmetic products and portable terminals with various visually appealing feelings, allowing users to express various individual styles or preferences using the portable products.

Abstract: An injection-molded product having a multilayer pattern, includes: a main layer formed on the injection-molded product, the main layer either protruding from or being recessed on a surface of the injection-molded layer, thereby forming a base pattern; a dual-level layer formed on the main layer, the dual-layer either protruding from or being recessed on the main layer, thereby providing a cubic effect and a gripping sense for the main layer; a deposition layer deposited on the surface of the injection-molded product so as to implement a color sense for the injection-molded product; and a clear coating applied to the deposition layer so as to protect the surface of the injection-molded product and the deposition layer

Abstract: A projection television receiver for embodying a high definition and high quality projection television receiver by processing an image of an image source. A red, a green and a blue image are formed and emitted into a red, a green and a blue colors at a cathode ray tube. The emitted red, green and blue images are received and gathered for reiterating the red, the green and the blue images at a mirror unit. The reiterated red, green and blue images unit are displayed onto a screen by enlarging and projecting the images through a lens assembly.

Abstract: A projector screen is composed of a Fresnel lens for collimating incident light from a light projection device, a lenticular lens formed of a plurality of constituent lenses for forming and spreading an image from the parallel light, and a screen protection panel for protecting a screen set up adjacent to the lenticular lens. A projecting part of a predetermined height is formed on the rear side of the screen panel facing the lenticular lens, and on the tip of the projecting part a black stripe is formed to serve as a light-absorbing means. The height of the projecting part is lower than that of a convex surface of the lenticular lens. The widened range of light-spreading angle of the lenticular lens improves a horizontal viewing angle.

Abstract: A projector screen is provided with a Fresnel lens for collimating lights projected from a projection lens provided in a projection device. A lenticular lens having a plurality of pillar lens elements successively arranged in parallel forms an image from the collimated lights projected by the Fresnel lens and spreads the image. A protection panel is installed on the front surface of the lenticular lens for protecting the lenticular lens. Also, a plurality of parallel spreading units is formed along the central axis of each lens element at the contact portion of the lenticular lens and the protection panel for providing a wide viewing angle of the image. The surface of the lenticular lens opposing the protection panel is flat so as to adhere to the protection panel.

Abstract: A projection system having multiple screens for image display includes at least two screens arranged to form a polygon and a multi-projector comprised of at least two sub-projector units for projecting an image to the rear side of each of the screens. Thus, since multiple screens for displaying an image are disposed in at least two directions, the image can be viewed in various directions.

Abstract: A liquid crystal projector with an illuminating light collecting unit which can efficiently collect illuminating light emitted from a lamp of the projector to a scrambler. The projector with an illuminating light collecting unit, includes: a lamp for emitting illuminating light; a reflector for reflecting the illuminating light; a rod-shaped scrambler for guiding the reflected illuminating light to pass therethrough; an illuminating light collecting unit for collecting and diffusing the reflected illuminating light in order to prevent the fluctuation of the illuminating light which may occur at a region between the scrambler and the lamp; and a projection lens for projecting the illuminating light which has passed through the scrambler.

Abstract: A projection screen for a rear projection television set includes a Fresnel lens for focusing incident image light so as to center on an optical axis of the projection screen, and an optical diffusion member including a lenticular lens portion for diffusing the image light received from the Fresnel lens, wherein the external surface of the optical diffusion member is made of glass. The projection screen provides a wider angle of view compared with the Fresnel lens made of acryl and is resistant to scratching or breakage.