Patent application number | Description | Published |
20080297564 | INKJET PRINTHEAD - An inkjet printhead includes a substrate in which an ink feed hole is formed, a plurality of ejection devices formed on the substrate at sides of the ink feed hole, a chamber layer stacked on the substrate and in which a plurality of ink chambers, which correspond to the ejection devices and in which ink supplied from the ink feed hole is filled, are formed, and a nozzle layer in which a plurality of nozzles corresponding to the ink chambers are formed, wherein the ink feed hole includes a plurality of through holes formed through the substrate in the thickness direction thereof. | 12-04-2008 |
20090001048 | METHOD OF MANUFACTURING INKJET PRINTHEAD - A method of manufacturing an inkjet printhead includes forming a chamber layer, in which a plurality of ink chambers is formed, on a substrate, forming trench to define an island surrounded by the trench on an upper part of the substrate by etching an upper surface of the substrate to a predetermined depth, forming a sacrifice layer on the chamber layer to fill the trenches and the ink chambers, forming a nozzle layer, in which a plurality of nozzles are formed, on the sacrifice layer and the chamber layer, forming an ink feed hole by etching a lower part of the substrate until the sacrifice layer that is filled in the trench is exposed, and removing the sacrifice layer and the island. | 01-01-2009 |
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 |
20090309932 | HEATER OF AN INKJET PRINTHEAD AND METHOD OF MANUFACTURING THE HEATER - A heater of a thermal inkjet printhead. The heater is formed of tantalum aluminum oxynitride (Ta—Al—ON), wherein the tantalum aluminum oxynitride is formed of about 30 to about 60 atomic % tantalum, about 10 to about 30 atomic % aluminum, about 5 to about 30 atomic % oxygen, and about 5 to about 30 atomic % nitrogen. | 12-17-2009 |
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 |
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 |
20110045620 | Light emitting diode integrated with lens, line printer head, and method of manufacturing the light emitting diode - Provided are a light emitting diode unit including a light emitting diode integrated with a lens, a line printer head using the light emitting diode, and a method of manufacturing the light emitting diode. The light emitting diode unit includes the light emitting diode layer bonded to a transparent substrate after removing a growth substrate on which the light emitting layer is grown, and a lens that refracts light emitted from the light emitting diode is formed on the transparent substrate. | 02-24-2011 |
20110096134 | Light emitting diode array including apertures, line printer head, and method of manufacturing the light emitting diode array - A light emitting diode array including apertures, a line printer head using the light emitting diode array, and a method of manufacturing the light emitting diode array. The light emitting diode array includes the apertures that are formed in a substrate and restrict tunnels of light emitted from a plurality of light emitting diodes. Also, a lens that refracts the light transmitted through the plurality of apertures is included. | 04-28-2011 |
20110097113 | Light emitting diode array integrated with lens, line printer head, and method of manufacturing the light emitting diode array - A lens integrated light emitting diode array, a line printer head using the light emitting diode array, and a method of manufacturing the light emitting diode array. The light emitting diode array includes a plurality of light emitting diodes formed on a surface of a transparent substrate and a plurality of lenses formed on another surface opposite to the surface of the transparent substrate, wherein the plurality of light emitting diodes are divided into a plurality of groups to be arranged to respectively correspond to the plurality of lenses. | 04-28-2011 |
20110200927 | ELECTROPHOTOGRAPHIC TONER - An electrophotographic toner, a method of preparing the electrophotographic toner, and an image forming apparatus using the electrophotographic toner. The electrophotographic toner includes a binder resin, a colorant, a releasing agent, and a spherical metal nanoparticle having a volume average diameter of about 10 to about 100 nm. | 08-18-2011 |
20130070445 | MICRO-OPTICAL SWITCHING DEVICE, IMAGE DISPLAY APPARATUS INCLUDING MICRO-OPTICAL SWITCHING DEVICE, AND METHOD OF MANUFACTURING MICRO-OPTICAL SWITCHING DEVICE - A micro-optical switching device, an image display apparatus including the micro-optical switching device, and a method of manufacturing the micro-optical switching device are provided. The micro-optical switching device includes a substrate; a first electrode disposed on the substrate and including a first opening array, wherein the first opening array includes a plurality of openings; and a second electrode disposed spaced apart from the first electrode and including a second opening array including a plurality of openings, wherein the plurality of openings of the second opening array do not overlap with the plurality of openings of the first opening array. | 03-21-2013 |
20130088856 | TRANSMISSIVE AND REFLECTIVE-MODE CONVERTIBLE DISPLAY - A transmissive and reflective mode convertible display is provided including a converting unit convertible between a reflective mirror layer state and a light transmitting layer state and a shutter unit. Based on the state of the converting unit, the display may be drive to utilize light from a backlight transmitted through the converting unit or external light reflected off the converting unit. | 04-11-2013 |
20130345557 | LIGHT SCANNING PROBE AND MEDICAL IMAGING APPARATUS EMPLOYING THE SAME - A light scanning probe includes: a probe main body; a light scanner that includes a scanner module that is driven to rotate and a beam reflector that includes a plurality of reflection surfaces which alter a path of light being scanned by the scanner module, wherein the light scanner is disposed within the probe main body; and an optical fiber that guides light which is received from a light input unit toward the scanner module. A medical imaging apparatus includes the light scanning probe that irradiates light toward an object; a receiver that receives a signal which is generated in the object; and a signal processor that processes the signal received by the receiver. | 12-26-2013 |
20140131744 | DRIVING DEVICE OF DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE DRIVING DEVICE - A driving device of a display apparatus, and a method of manufacturing the driving device. The driving device may have a specific structure, and be manufactured in such a manner, because a first electrode of a micro optical switch device may be formed simultaneously with the formation of at least a source region and a drain region, or a gate electrode of an active device and a capacitor electrode. | 05-15-2014 |
20140133003 | MICRO OPTICAL SWITCH DEVICE, IMAGE DISPLAY APPARATUS INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE MICRO OPTICAL SWITCH DEVICE - A micro optical switch device, an image display apparatus including the same, and a method of manufacturing the micro optical switch device are provided. The micro optical switch device includes a substrate; a first electrode disposed on the substrate and having a plurality of openings; a second electrode disposed above and spaced apart from the first electrode, and having a plurality of openings; and support units disposed on the substrate and configured to support the second electrode, wherein the support units include deformation preventing portions protruding beyond a top surface of the second electrode | 05-15-2014 |