| Patent application number | Description | Published |
|---|
| 20090141083 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - An inkjet printhead and a method of manufacturing the same. The inkjet printhead includes a silicon on insulator (SOI) substrate including a lower silicon substrate, a middle insulating layer, an upper silicon substrate, and an ink feed hole, the ink feed hole penetrates the SOI substrate to supply ink, an insulating layer stacked on the upper silicon substrate of the SOI substrate, a chamber layer stacked on the insulating layer in which a plurality of ink chambers filled with ink supplied from the ink feed hole is formed, a nozzle layer stacked on the chamber layer in which a plurality of nozzles is formed to correspond to the ink chambers, a plurality of heaters formed on the insulating layer which heats ink in the ink chambers to generate bubbles and eject ink through the nozzles, and a driving circuit region on which a driving circuit is formed to drive the heaters. | 06-04-2009 |
| 20090194025 | APPARATUS TO SENSE TEMPERATURE OF INK-JET HEAD - 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. | 08-06-2009 |
| 20090267990 | THERMAL INKJET PRINT HEAD - Provided is a thermal inkjet printhead that includes a substrate, which may comprise an ink feed hole for supplying ink, a chamber layer, which is stacked on the substrate, and which comprises an ink chamber that is filled with the ink supplied from the ink feed hole, a heater, which is prepared inside the ink chamber and heats the ink, an island, which is formed on the substrate, and which is prepared at an ink inlet port of the ink chamber, and a nozzle layer, which is stacked on the chamber layer, and which comprises 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. | 10-29-2009 |
| 20090273647 | INKJET PRINT HEAD AND MANUFACTURING METHOD THEREOF - An inkjet print head includes a substrate formed with a feed hole through which ink is transferred, and a notch prevention layer covering an area on the substrate where the feed hole is to be formed. Plasma electrons flown into the feed hole while the hole is formed on the substrate through dry etching can move through the notch prevention layer. As a result, corrosion of the substrate around the feed hole by the electrons can be prevented, thereby achieving a uniform width of the feed hole. | 11-05-2009 |
| 20100002036 | APPARATUS FOR AND METHOD OF CONTROLLING JETTING OF INK IN INKJET PRINTER - 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. | 01-07-2010 |
| 20100020136 | INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE SAME - Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead includes: a substrate having an ink feed hole extending therethrough; a chamber layer including a plurality of ink chambers above the substrate; a nozzle layer including a plurality of nozzles above the chamber layer; and at least one support beam formed in the substrate to connect inner walls of the ink feed hole. | 01-28-2010 |
| 20100051580 | METHOD OF MANUFACTURING INKJET PRINTHEAD - 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. | 03-04-2010 |
| 20100053272 | INK EJECTING DEVICE AND METHOD OF MANUFACTURING THE SAME - 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. | 03-04-2010 |
| 20110162831 | DISPLAY DEVICE - A display device including a case having a transparent window that forms one side of a first air flow path, a display unit including a display surface that faces the transparent window to form the other side of the first air flow path, a ventilator to supply air to the first air flow path, and a diffuser disposed at an exit of the first air flow path and having a cross-sectional area that is gradually increased. | 07-07-2011 |
