Samsung Electronics Co., Ltd.

Yong-won Jeong

Moon-chul Lee

Yong-seop Yoon

Dong-sik Shim

Jeong-eun Lee

Jong-seok Kim

Jun-ho Koh

Hyung Ki Choi

Sang-hun Lee

Hee-jin Park

Jang-pyo Park

Jee-yeon Kim

Hye-jung Cho

Jae-hong Kim

Min-Soo Kim

Dae-Kwang Jung

Chang-Hyun Kim

Jin-wook Lee

Sung-Joon Park

Kwang-bok Kim

Myong-jong Kwon

Eun-bong Han

Yong-Chan Lee

Hyung Woo Choi

Hyun-suk Kwak

Bang-Weon Lee

Jeong-Eun Lee

Sae-mi Kim

Dong-Shik Shim

Donk-sik Shim

An air purifier is provided. The air purifier includes a plurality of filters, a driving unit configured to individually move the plurality of filters, and a processor configured to control the driving unit so that at least one of the plurality of filters is disposed in an air passage in the air purifier according to an air state.

Air purification device and method for controlling same

A photocatalyst filter is provided. The photocatalyst filter includes: a base in which an internal space is formed. The internal space is permeable to fluid, and a plurality of photocatalyst beads are provided in the internal space, wherein a surface of the internal space is reflective.

Photocatalyst filter and air conditioner including the same

An electronic device is disclosed. The electronic device comprises: a gas sensor having different sensitivities in temperature for each of a plurality of gases; and a processor for calculating a concentration of at least one of a plurality of gases on the basis of an output value of the gas sensor for different temperature sections.

High-performance multilayer film for packaging

An air conditioning device is disclosed. The present air conditioning device comprises: a photocatalytic filter including a space through which air can pass and having a transition metal oxide formed in a nanotube form on the surface thereof, the transition metal oxide removing gases included in the air and including at least one of TiO, ZnO, NiO, and WO; and a light source for emitting light to the photocatalytic filter.

Photocatalytic filter and air conditioning device comprising photocatalytic filter

An electronic apparatus is provided. The electronic apparatus according to an embodiment includes a plurality of different types of gas sensors configured to output sensing values based on sensing a gas, and a processor configured to determine a gas type corresponding to a plurality of sensing values respectively output from the plurality of different types of gas sensors.

Electronic gas sensors and method for controlling gas sensors

Disclosed is an optical gas sensor. The optical gas sensor includes: a light source which emits light; a gas collector which includes a cavity to be filled with gas to be sensed; an optical wave guider which guides light emitted from the light source to be output to the cavity, and guides the output light to be output again to the cavity after passing through the cavity of the gas collector; and an optical detector which detects light output from the optical wave guider. Thus, a path of light exposed to the gas to be sensed is increased within the cavity, thereby achieving miniaturization and sensing gas of low-concentration.

Optical gas sensor

Provided are an apparatus and method of controlling jetting of ink of an inkjet printer. The apparatus includes at least one print head chip, which includes a temperature sensor for sensing the temperature of the print head chip and a voltage controlled oscillator (VCO) for converting the sensed temperature to a frequency component. The apparatus may also include a counter, which converts the frequency component to a code information using a reference frequency component, and a controller, which controls the ink jetting operation of the at least one print head chip based on the code information and/or the frequency component.

Apparatus for and method of controlling jetting of ink in inkjet printer

An apparatus to sense the temperature of an ink-jet head includes at least one or more CMOS (complementary metal oxide semiconductor) lateral BJTs (bipolar junction transistors) to sense the temperature of the ink-jet head, and a current supply unit to supply a current to the CMOS lateral BJTs. Minimum sized CMOS lateral BJTs are applied to an ink-jet printer head so that precise temperature control can be performed in a shuttle or array type ink-jet printer.

Apparatus to sense temperature of ink-jet head

An ink feedhole of an inkjet printhead and a method of forming the same includes an ink feedhole that penetrates a substrate and has a width that narrows in an upper direction of the substrate, wherein at least one internal wall of the ink feedhole has a plurality of steps and inclines with respect to a surface of the substrate.

Ink feedhole of inkjet printhead and method of forming the same

A method of manufacturing an inkjet printhead includes forming a chamber layer having multiple ink chambers on a substrate. A sacrificial layer is formed and is configured to fill a space associated with the ink chambers on the chamber layer. A nozzle layer is formed on the top surfaces of the chamber layer and the sacrificial layer and having multiple nozzles. An etching mask is prepared on the bottom surface of the substrate. The etching mask has at least one linear etching pattern configured to define a portion of the substrate in which an ink feed hole is to be formed. The substrate is etched through the linear etching pattern until the sacrificial layer is exposed and a through hole is formed. The through hole defines the portion of the substrate in which the ink feed hole is to be formed. The sacrificial layer and the portion of the substrate surrounded by the through hole are removed to form the ink feed hole.

Method of manufacturing inkjet printhead

Provided are a method of manufacturing a photosensitive epoxy structure using a photolithograph process, and a method of manufacturing an inkjet printhead using the method of manufacturing a photosensitive epoxy structure. The method of manufacturing the photosensitive epoxy structure includes forming an epoxy material layer formed of photosensitive epoxy; forming a first exposure pattern in the epoxy material layer by performing a first exposure operation; forming a second exposure pattern in the non-exposed portions of the epoxy material layer by performing a second exposure operation; and developing the epoxy material layer, wherein the amount of first UV energy used in the first exposure operation is different from the amount of second UV energy used in the second exposure operation.

Method of manufacturing photosensitive epoxy structure using photolithography process and method of manufacturing inkjet printhead using the method of manufacturing photosensitive epoxy structure

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.

Ink ejecting device and method of manufacturing the same

A thermal inkjet printhead is provided including a substrate, and a chamber layer, which is stacked on the substrate. The chamber layer includes an ink chamber that is filled with ink supplied from an ink feed hole. The printhead includes a heater inside the ink chamber that heats the ink, an island, which is formed on the substrate at an ink inlet port of the ink chamber, and a nozzle layer, which is stacked on the chamber layer, including a nozzle for ejecting the ink. The walls of the ink chamber and the island that face each other are symmetrical with respect to the center of the nozzle.

Thermal inkjet print head

The inkjet printhead includes substrate having an ink feed hole formed to supply ink, a chamber layer stacked on the substrate, and including a plurality of main ink chambers formed therein with the ink feed hole therebetween and a plurality of compensation ink chambers formed therein between the main ink chambers that face each other; and a nozzle layer stacked on the chamber layer, and including a plurality of main nozzles corresponding to the main ink chambers and a plurality of compensation nozzles corresponding to the compensation ink chambers.

Inkhead printhead configured to overcome impaired print quality due to nozzle blockage, printing method using the same, and method of manufacturing the inkjet printhead

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Seoul, South Korea

Yong-won Jeong