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    INKJET PRINTHEAD HAVING PIEZOELECTRIC ACTUATOR AND METHOD OF DRIVING THE PIEZOELECTRIC ACTUATOR
    12.
    发明申请
    INKJET PRINTHEAD HAVING PIEZOELECTRIC ACTUATOR AND METHOD OF DRIVING THE PIEZOELECTRIC ACTUATOR 失效
    具有压电致动器的喷墨打印机和驱动压电致动器的方法

    公开(公告)号：US20100194828A1

    公开(公告)日：2010-08-05

    申请号：US12755474

    申请日：2010-04-07

    Applicant: Hwa-sun LEE ,  Kyo-yeol Lee ,  Tae-kyung Lee ,  Chang-youl Moon ,  Jae-woo Chung

    Inventor： Hwa-sun LEE ,  Kyo-yeol Lee ,  Tae-kyung Lee ,  Chang-youl Moon ,  Jae-woo Chung

    IPC: B41J2/045

    CPC classification number: B41J2/14233

    Abstract: An inkjet printhead and a method of driving the inkjet printhead include a flow channel substrate having a pressure chamber, and a piezoelectric actuator formed on the flow channel substrate to apply a driving force to the pressure chamber to eject ink. The piezoelectric actuator includes a piezoelectric layer formed on the flow channel substrate to correspond to the pressure chamber, and a plurality of common electrodes and a plurality of driving electrodes alternately arranged in a length direction of the piezoelectric layer.

    Abstract translation: 喷墨打印头和驱动喷墨打印头的方法包括：具有压力室的流路基板和形成在流路基板上的压电致动器，用于向压力室施加驱动力以喷射油墨。 压电致动器包括形成在流路基板上以对应于压力室的压电层，以及沿压电层的长度方向交替布置的多个公共电极和多个驱动电极。

    Method of forming piezoelectric actuator of inkjet head
    13.
    发明授权
    Method of forming piezoelectric actuator of inkjet head 失效
    形成喷墨头压电致动器的方法

    公开(公告)号：US07603756B2

    公开(公告)日：2009-10-20

    申请号：US11583798

    申请日：2006-10-20

    Applicant: Seung-mo Lim ,  Kyo-yeol Lee ,  Jae-woo Chung ,  Hwa-sun Lee ,  Jae-chang Lee

    Inventor： Seung-mo Lim ,  Kyo-yeol Lee ,  Jae-woo Chung ,  Hwa-sun Lee ,  Jae-chang Lee

    IPC: H04R17/00 ,  H01L41/24

    CPC classification number: B41J2/161 ,  B41J2/1631 ,  B41J2/1645 ,  B41J2/1646 ,  B41J2002/1425 ,  Y10T29/42 ,  Y10T29/435 ,  Y10T29/49401

    Abstract: A method of forming a piezoelectric actuator of an inkjet head formed on a vibrating plate to provide a driving power for ejecting ink to each of pressure chambers is provided. The method includes forming a lower electrode on a vibrating plate, forming a piezoelectric layer on the lower electrode to be located above each of pressure chambers, forming a protecting layer covering the lower electrode and the piezoelectric layer, exposing an upper surface of the piezoelectric layer by decreasing a thickness of the protecting layer and the piezoelectric layer, forming an upper electrode on the upper surface of the piezoelectric layer, removing the protecting layer. According to the present invention, since the piezoelectric layer having a flat upper surface is formed in uniform figure, area and thickness of the upper electrode formed thereon is uniformly controlled.

    Abstract translation: 提供一种形成在振动板上的喷墨头的压电致动器的方法，以提供用于将油墨喷射到每个压力室的驱动力。 该方法包括在振动板上形成下电极，在下电极上形成压电层，位于每个压力室之上，形成覆盖下电极和压电层的保护层，暴露压电层的上表面 通过减小保护层和压电层的厚度，在压电层的上表面上形成上电极，除去保护层。 根据本发明，由于具有平坦的上表面的压电层形成均匀的图形，所以形成在其上的上电极的面积和厚度被均匀地控制。

    Piezoelectric actuator inkjet head and method of forming the same
    17.
    发明申请
    Piezoelectric actuator inkjet head and method of forming the same 失效
    压电致动器喷墨头及其形成方法

    公开(公告)号：US20070195134A1

    公开(公告)日：2007-08-23

    申请号：US11581333

    申请日：2006-10-17

    Applicant: Tae-kyung Lee ,  Jae-woo Chung ,  Kyo-yeol Lee ,  Hwa-sun Lee ,  Seung-mo Lim ,  Jae-chang Lee

    Inventor： Tae-kyung Lee ,  Jae-woo Chung ,  Kyo-yeol Lee ,  Hwa-sun Lee ,  Seung-mo Lim ,  Jae-chang Lee

    IPC: B41J2/045

    CPC classification number: B41J2/14233 ,  B41J2002/14491 ,  Y10T29/42 ,  Y10T29/49002 ,  Y10T29/49005 ,  Y10T29/4908

    Abstract: A piezoelectric actuator of an inkjet head and a method of forming the piezoelectric actuator. The piezoelectric actuator is formed on a vibration plate to provide a driving force to each of a plurality of pressure chambers. The piezoelectric actuator includes a lower electrode formed on the vibration plate, a piezoelectric layer formed on the lower electrode at a position corresponding to each of the pressure chambers, a supporting pad formed on the lower electrode, the supporting pad contacting one end of the piezoelectric layer and extending away from the one end of the piezoelectric layer, and an upper electrode extending from a top surface of the piezoelectric layer to a top surface of the supporting pad. The upper electrode is bonded to a driving circuit above the supporting pad to receive a voltage from the driving circuit. The piezoelectric layer may have substantially the same length as the pressure chamber. The supporting pad may be formed of a photosensitive polymer and may have substantially the same height as the piezoelectric layer. The upper electrode may include a first portion formed on the piezoelectric layer and a second portion formed on the supporting pad, and the second portion may be wider than the first portion.

    Abstract translation: 喷墨头的压电致动器和形成压电致动器的方法。 压电致动器形成在振动板上以向多个压力室中的每一个提供驱动力。 压电致动器包括形成在振动板上的下电极，形成在下电极上的与每个压力室对应的位置处的压电层，形成在下电极上的支撑焊盘，支撑焊盘接触压电体的一端 并且离开压电层的一端延伸，以及从压电层的顶表面延伸到支撑衬垫的顶表面的上电极。 上电极接合到支撑焊盘上方的驱动电路，以接收来自驱动电路的电压。 压电层可以具有与压力室大致相同的长度。 支撑垫可以由光敏聚合物形成，并且可以具有与压电层基本相同的高度。 上部电极可以包括形成在压电层上的第一部分和形成在支撑垫上的第二部分，并且第二部分可以比第一部分更宽。

    Method of forming thick layer by screen printing and method of forming piezoelectric actuator of inkjet head
    18.
    发明申请
    Method of forming thick layer by screen printing and method of forming piezoelectric actuator of inkjet head 失效
    通过丝网印刷形成厚层的方法和形成喷墨头的压电致动器的方法

    公开(公告)号：US20070195132A1

    公开(公告)日：2007-08-23

    申请号：US11581334

    申请日：2006-10-17

    Applicant: Kyo-yeol Lee ,  Tae-kyung Lee ,  Jae-woo Chung ,  Hwa-sun Lee ,  Seung-mo Lim

    Inventor： Kyo-yeol Lee ,  Tae-kyung Lee ,  Jae-woo Chung ,  Hwa-sun Lee ,  Seung-mo Lim

    IPC: B41J2/045

    CPC classification number: B41J2/14233 ,  B41J2/161 ,  B41J2/1626 ,  B41J2/1631 ,  B41J2/1646 ,  B41J2002/14491 ,  H05K3/107 ,  H05K3/1216 ,  Y10T29/42

    Abstract: A method to form a thick layer by screen printing and a method to form a piezoelectric actuator of an inkjet head. The method to form the thick layer including forming a guide groove in a surface to a predetermined depth, and forming the thick layer by applying a material to the surface inside the guide groove through screen printing. The method to form the piezoelectric actuator including forming an insulating layer on a top surface of a vibration plate and forming a guide groove in the top surface of the vibration plate or an insulating layer to a predetermined depth at a position corresponding to each of a plurality of pressure chambers, forming a lower electrode on the top surface of the insulating layer; forming a piezoelectric layer inside the guide groove by screen printing, and forming an upper electrode on a top surface of the piezoelectric layer.

    Abstract translation: 通过丝网印刷形成厚层的方法以及形成喷墨头的压电致动器的方法。 形成厚层的方法包括在表面上形成预定深度的引导槽，并且通过丝网印刷将引导槽内的表面施加材料形成厚层。 形成压电致动器的方法包括在振动板的顶表面上形成绝缘层，并且在与振动板的顶表面对应的位置处在振动板的顶表面或绝缘层中形成预定深度的引导槽 的压力室，在绝缘层的顶表面上形成下电极; 通过丝网印刷在引导槽内形成压电层，并在压电层的顶表面上形成上电极。

    Silicon wet etching method using parylene mask and method of manufacturing nozzle plate of inkjet printhead using the same
    19.
    发明申请
    Silicon wet etching method using parylene mask and method of manufacturing nozzle plate of inkjet printhead using the same 审中-公开
    使用聚对二苯乙烯掩模的硅湿式蚀刻方法和使用其制造喷墨打印头的喷嘴板的方法

    公开(公告)号：US20070134928A1

    公开(公告)日：2007-06-14

    申请号：US11505416

    申请日：2006-08-17

    Applicant: Jae-chang Lee ,  Chang-seung Lee ,  Jae-woo Chung ,  Duck-su Kim ,  Kyo-yeol Lee

    Inventor： Jae-chang Lee ,  Chang-seung Lee ,  Jae-woo Chung ,  Duck-su Kim ,  Kyo-yeol Lee

    IPC: H01L21/302

    CPC classification number: B41J2/161 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2002/14411

    Abstract: A silicon wet etching method to form at least two elements having different shapes in a silicon substrate using at least two wet etching processes includes forming a first etch mask made of parylene on a surface of the silicon substrate, forming a first element in the substrate by wet etching the silicon substrate for a first time using the first etch mask, forming a second etch mask made of a silicon oxide layer on the surface of the silicon substrate, and forming a second element by wet etching the silicon substrate for a second time using the second etch mask.

    Abstract translation: 使用至少两个湿蚀刻工艺在硅衬底中形成具有不同形状的至少两种元件的硅湿式蚀刻方法包括在硅衬底的表面上形成由聚对二甲苯制成的第一蚀刻掩模，在衬底中形成第一元件，通过 使用第一蚀刻掩模第一次湿蚀刻硅衬底，在硅衬底的表面上形成由氧化硅层制成的第二蚀刻掩模，并且通过湿法蚀刻硅衬底第二次来形成第二元件，第二次使用 第二蚀刻掩模。

    Method for fabricating semiconductor light emitting device
    20.
    发明授权
    Method for fabricating semiconductor light emitting device 有权

    公开(公告)号：US06551848B2

    公开(公告)日：2003-04-22

    申请号：US10096919

    申请日：2002-03-14

    Applicant: Joon-seop Kwak ,  Kyo-yeol Lee

    Inventor： Joon-seop Kwak ,  Kyo-yeol Lee

    IPC: H01L2100

    CPC classification number: H01L33/0079

    Abstract: A method for fabricating a semiconductor light emitting device is provided. The method involves: forming a light emitting construct including a p-type electrode on a n-type substrate; etching a bottom surface of the n-type substrate; and forming an n-type electrode on the etched bottom surface of the n-type substrate. The bottom surface of the n-type substrate is wet or dry etched. The bottom surface of the n-type substrate is free from damage so that stable attachment of the etched bottom surface of the n-type substrate is ensured with improved properties of the light emitting device which may be a semicoductor laser diode.

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