Samsung Electronics Co., Ltd.

Pointchips Co., Ltd.

Tae-gyun Kim

Sang-Il Kim

Young-ki Hong

Tae-Woon Cha

Kyung-Il Cho

Dong-Suk Shin

Jae-Han Lee

Jae-woo Chung

Ha-Jin Lim

Byeoung-ju Ha

Pan-Kwi Park

Jong-beom Kim

Sang-hyun Han

Sang-kwon Wee

Jun-Jung Kim

Young-Hwan Kim

Min-Sick Park

Gwang-Sig Jang

Jeung-sang Go

Kyung-Beom Kim

Provided are method of controlling nozzles of an inkjet head and an apparatus for measuring the amounts of ink ejected from the nozzles of the inkjet head. The method includes: preparing a mass measuring device, which measures the mass of ink by using an oscillation change, in a pixel; ejecting ink into the pixel from a nozzle of the inkjet head, and measuring the amount of ink ejected from the nozzle by using the mass measuring device; and adjusting a voltage waveform applied to the nozzle of the inkjet head.

Method of controlling nozzles of inkjet head and apparatus for measuring amounts of ink ejected from nozzles of inkjet head

A method of fabricating a semiconductor integrated circuit (IC) device can include forming a first silicide layer on at least a portion of a transistor on a substrate, forming nitrogen in the first silicide layer to form a second silicide layer, forming a first stress layer having a tensile stress on the substrate having the transistor formed thereon, and irradiating the first stress layer with ultraviolet (UV) light to form a second stress layer having greater tensile stress than the first stress layer.

Method of fabricating semiconductor integrated circuit device

Provided are an apparatus and method for measuring the thickness of an ink layer in a pixel and a method of controlling nozzles of an inkjet head using the apparatus and method. The apparatus includes: a substrate; a plurality of pixels disposed on the substrate and filled with ink due to a printing operation; first and second electrodes corresponding to the pixels, the first and second electrodes disposed on opposite sides of each of the pixels; and a capacitance measurement circuit electrically connected to the first and second electrodes to measure the capacitance of each of the pixels.

Apparatus and method for measuring thickness of ink layer in pixel

The present invention relates to an apparatus and method for controlling power to a Universal Serial Bus (USB) device. The present invention provides an apparatus for controlling power to a USB device, the USB device being used to connect a Personal Computer (PC) with a peripheral device, the power control apparatus including a plug-in port for connecting the peripheral device with the PC, a state detector for detecting whether the peripheral device is in a preparation completion state, a power supply unit for supplying power to the USB device, and a power control unit for controlling the power supply unit so that power is supplied to the USB device if it is determined that the peripheral device is in a plugged-in state, and if it is determined that the peripheral device is in a preparation completion state by the state detector. Accordingly, the present invention performs the supply of power only when the peripheral device is plugged into the USB device and its internal application program is in a preparation completion state, so that it can prevent power from being unnecessarily consumed.

Appparatus and method for controlling power to USB device

A simple structured thermal actuation pump for reducing energy loss is provided. The thermal actuation pump includes: a first chamber having at least one working fluid inlet and at least one working fluid outlet; a second chamber having at least one working fluid inlet and at least one working fluid outlet; and a thermoelectric element arranged between the first chamber and the second chamber and including one side being cooled and the other side being heated according to a direction of current for changing inside pressures of the first chamber and the second chamber.

Thermal actuation pump

A piezoelectric inkjet printhead having a channel forming plate including an ink channel having a pressure chamber coupled to a nozzle, a piezoelectric actuator including a lower electrode on the channel forming plate, a piezoelectric element on the lower electrode, and an upper electrode on the piezoelectric element, the piezoelectric actuator corresponding to the pressure chamber, an insulation element on the lower electrode and spaced apart from the piezoelectric element, a first electrode on the insulation element, and a temperature sensor on the first electrode, and a method of making the same.

Piezolelectric inkjet printhead having temperature sensor and method of making the same

A substantially flat heat transferring device and a method of fabricating the same are provided. The device includes a lower plate, an upper plate, a wick plate, and a liquid-phase coolant, while the lower plate contacts a heat source at its bottom. The upper plate is hermetically coupled with the lower plate along its edge to form a void therebetween. The wick plate is provided between the upper plate and the lower plate and is maintained in position relative to the lower plate by surface tension of the liquid-phase coolant. The liquid-phase coolant transfers heat by circulating between a vaporization part, where the heat source is located, to a condensing part. Here, the wick plate includes a plurality of holes and a plurality of planar wicks and makes the liquid-phase coolant flow from the condensing part to the vaporization part by capillary force between itself and the lower plate.

Flat heat transferring device and method of fabricating the same

A microcooling device is provided. The microcooling device includes a substrate, a microchannel array, and a condenser. A predetermined region of a lower surface of the substrate contacts a heat source. The microchannel array is placed on the substrate so that a coolant concentrating portion is opposite to the predetermined region of the lower surface. The condenser fixes the microchannel array, condenses vapor generated in a process of cooling the heat source, and allows the condensed vapor to flow into the microchannel array.

Growing community of inventors

Suwon-si, South Korea

Tae-gyun Kim