Abstract: A design validation system including a plurality of design validation devices receiving design data from a user and performing a simulation process to validate at least one of a plurality of product characteristics calculated from the design data and a simulation management device having simulation information about the characteristics required for a performance of the simulation process and transmitting the simulation information to the design validation devices upon request by the plurality of design validation devices, wherein the plurality of design validation devices simultaneously perform the simulation processes to validate the product characteristics.

Abstract: A light-emitting device package including: a package main body including a cavity and a lead frame including a mounting portion disposed in the cavity and a plurality of terminal portions; a light-emitting device chip mounted on the mounting portion; a plurality of bonding wires for electrically connecting the plurality of terminal portions and the light-emitting device chip; a light-transmitting encapsulation layer filled in the cavity; and a light-transmitting cap member disposed in the cavity and blocking the encapsulation layer to contact the plurality of bonding wires.

Abstract: A light-emitting device package including: a package main body including a cavity and a lead frame including a mounting portion disposed in the cavity and a plurality of terminal portions; a light-emitting device chip mounted on the mounting portion; a plurality of bonding wires for electrically connecting the plurality of terminal portions and the light-emitting device chip; a light-transmitting encapsulation layer filled in the cavity; and a light-transmitting cap member disposed in the cavity and blocking the encapsulation layer to contact the plurality of bonding wires.

Abstract: Disclosed are an ink ejecting device and a method of manufacturing the same. The disclosed ink ejecting device includes an inkjet head including a substrate, which includes an ink feed hole, a plurality of via holes, which are formed in the rear surface of the substrate, and which expose the ink feed holes therethtough, a chamber layer stacked on the substrate, and a nozzle layer stacked on the chamber layer, and includes a base header, which is attached to the inkjet head and includes a plurality of ink supply slots having a corresponding arrangement with respect to the via holes.

Abstract: Provided is a method of detecting a missing nozzle in a thermal inkjet printhead. The method includes: applying an input energy high enough to eject ink to a heater corresponding to a target nozzle, and applying an input energy not high enough to eject ink to a heater corresponding to a nozzle adjacent to the target nozzle; when a predetermined time passes, detecting a difference between temperatures which are measured at points spaced by a predetermined distance from each of the two heaters; and determining whether the target nozzle is missing.

Abstract: Disclosed are an ink ejecting device and a method of manufacturing the same. The disclosed ink ejecting device includes an inkjet head including a substrate, which includes an ink feed hole, a plurality of via holes, which are formed in the rear surface of the substrate, and which expose the ink feed holes therethtough, a chamber layer stacked on the substrate, and a nozzle layer stacked on the chamber layer, and includes a base header, which is attached to the inkjet head and includes a plurality of ink supply slots having a corresponding arrangement with respect to the via holes.

Abstract: Provided is a method of detecting a missing nozzle in a thermal inkjet printhead. The method includes: applying an input energy high enough to eject ink to a heater corresponding to a target nozzle, and applying an input energy not high enough to eject ink to a hear corresponding to a nozzle adjacent to the target nozzle; when a predetermined time passes, detecting a difference between temperatures which are measured at points spaced by a predetermined distance from each of the two heaters; and determining whether the target nozzle is missing.

Abstract: Provided is a heat treatment apparatus. The heat treatment apparatus includes a heating plate including a heater; a chamber case including a cooling chamber, and coupled to a lower portion of the heating plate; and at least one atomizing unit installed on the chamber case to generate liquid droplet aerosol by mixing a cooling liquid and a gas, and at the same time, to inject the liquid droplet aerosol into the cooling chamber.

Abstract: A color filter manufacturing apparatus, method, and medium ink-jet printing through an ink-jet period schedule of heads, in which one head driver or a plurality of head drivers generate an ink-jet control signal for each head in accordance with the schedule data, with the heads being provided on a head array to jet ink in accordance with the corresponding ink-jet control signal with a predetermined ink-jet frequency.

Abstract: Provided is a heat treatment apparatus. The heat treatment apparatus includes a heating plate including a heater; a chamber case including a cooling chamber, and coupled to a lower portion of the heating plate; and at least one atomizing unit installed on the chamber case to generate liquid droplet aerosol by mixing a cooling liquid and a gas, and at the same time, to inject the liquid droplet aerosol into the cooling chamber.

Abstract: A head chip usable in an image forming apparatus, the head chip includes a nozzle layer having a nozzle to discharge ink onto a recording medium, a substrate layer having an ink supplying slit provided to be parallel with the nozzle layer to supply the nozzle with the ink, and a reinforcing bridge provided along an extending direction of the ink supplying slit and blocks at least one region of the ink supplying slit.

Abstract: A semiconductor wafer baking apparatus includes a hot plate, a container of which an upper part is open, and a cover that covers the upper part of the container. The cover includes an upper plate, a lower plate and a side wall that form a gas circulating space therebetween. At least one gas inlet is formed in the side wall, a plurality of gas supply holes are formed in a central region of the lower plate, and a skirt on which is formed a gas exhaust unit is coupled to a lower edge of the cover.

Abstract: An inkjet printhead including a substrate through which an ink feed hole is formed to supply ink, a chamber layer formed on the substrate and including a plurality of ink chambers which are filled with ink supplied from the ink feed hole, a nozzle layer formed on the chamber layer and including a plurality of nozzles through which ink is ejected, a plurality of support walls formed between the substrate and the nozzle layer to support the substrate and the nozzle layer, and a method of fabricating the same.

Abstract: An inkjet image forming apparatus and a print method using the same. The inkjet image forming apparatus includes an inkjet printhead cartridge having one or more nozzle units and a plurality of nozzles arranged over its length and disposed in nozzle units corresponding to a width of a print medium in a main scanning direction, and a shifting unit to move the nozzle units in the main scanning direction within the inkjet cartridge to eject ink, wherein the inkjet printhead cartridge is fixed with respect to the main scanning direction, and the nozzles are divided into respective ones of the nozzle units.

Abstract: An inkjet printhead includes an ejecting portion including an ink chamber to store ink, a nozzle to eject the ink stored in the ink chamber, and an actuator to generate an ink ejecting force, a supplying portion to refill the ink chamber with ink, a connecting portion to connect the ejecting portion and the supplying portion, and a backflow restrictor formed at the connecting portion to create a higher flow resistance against an ink backflow to the supplying portion than against an ink refill flow to the ejecting portion, the backflow restrictor including an converging region and an expansion region that are sequentially formed.

Abstract: An ink path structure, an inkjet printhead having the same and a method of manufacturing the inkjet printhead includes an ink chamber in which ink to be ejected is filled, nozzles through which ink is ejected from the ink chamber, an ink feed hole through which ink is supplied to the ink chamber, a first stopper protruding from an inner wall of a path between the ink chamber and the ink feed hole, a second stopper separated from the first stopper in a direction of the ink chamber, and a moving element installed movably between the first and second stoppers to open and close the path between the ink chamber and the ink feed hole.

Abstract: An ink path structure and an inkjet printhead including an ink chamber to be filled with ink to be ejected, a nozzle through which the ink in the ink chamber is ejected, an ink feed hole to supply the ink to the ink chamber, and a restrictor connecting the ink chamber and the ink feed hole, the restrictor including a flow resistance control portion in which an ink path toward the ink feed hole is formed to be longer than an ink path toward the ink chamber such that a flow resistance toward the ink feed hole greater than a flow resistance toward the ink chamber.

Abstract: An inkjet printhead is provided. The inkjet printhead includes an ink chamber filled with ink to be ejected, a nozzle through which the ink is ejected from the ink chamber, a manifold to supply the ink to the ink chamber, and a restrictor that connects the ink chamber and the manifold and includes a protrusion formed on an inner wall of the restrictor. A main heater is formed on an inner wall of the ink chamber and generates a main bubble in the ink chamber to eject ink and an auxiliary heater is formed on an inner wall of the restrictor and generates an auxiliary bubble to suppress the main bubble in the restrictor from expanding toward the restrictor. Thus, a refill speed of the ink to the ink chamber is increased and a driving frequency of the inkjet printhead is also increased.

Abstract: An athermal arrayed-waveguide grating is disclosed and includes an input waveguide for inputting two or more optical signals from one exterior side, a grating array for separating the optical signals into different wavelengths of light, a first slab, formed with two layers and having different refractive indices from each other, for connecting the input waveguide with the grating array, a second slab for causing the different light wavelengths separated at the grating array to be imaged on an egress surface thereof, and an output waveguide array for outputting each light wavelength imaged on the egress surface of the second slab to the other exterior side in the form of a separated channel.

Abstract: A heating apparatus and a method of driving the same. The heating apparatus includes: a heating plate on which an object to be heated is loaded and which is partitioned into a plurality of heating zones; a main heating apparatus that is placed on a lower portion of the heating plate and uniformly heats the entire heating plate; and a plurality of subheaters located below the heating plate and disposed to respectively correspond to the heating zones, such that each of the subheaters heats a corresponding one of the heating zones.