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    LED display with patterned pixel landings and printed LEDs
    1.
    发明授权
    LED display with patterned pixel landings and printed LEDs 有权

    公开(公告)号：US10417956B2

    公开(公告)日：2019-09-17

    申请号：US16219463

    申请日：2018-12-13

    Applicant: Nthdegree Technologies Worldwide Inc.

    Inventor： Brian D. Ogonowsky

    IPC: G09G3/32 ,  H01L23/00 ,  H01L33/06 ,  H01L33/32 ,  H01L33/40 ,  H01L33/00 ,  H01L33/48 ,  H01L33/62 ,  H01L33/58 ,  H01L33/54 ,  H01L33/50 ,  H01L25/075

    Abstract: Pixel locations in an addressable display are defined by metal landings on a top surface of a flexible substrate, such as by depositing a metal film and etching the film. The substrate surface may be hydrophobic so that the hydrophobic surface is exposed between the metal landings. The substrate has conductive vias that connect the metal landings to traces on a bottom surface of the substrate for connection to addressing circuitry. LED ink is then blanket-printed over the top surface and cured to electrically connect bottom electrodes of the LEDs to the metal landings. LEDs that fall between the landings are ineffective. A dielectric layer is blanket-printed which exposes the top electrodes, and a transparent conductor layer is blanket-printed over the LEDs to connect all LEDs associated with an individual pixel location in parallel. Accordingly, all printed steps can be performed without any alignment.

    Printed mesh defining pixel areas for printed inorganic LED dies
    3.
    发明授权
    Printed mesh defining pixel areas for printed inorganic LED dies 有权
    印刷网格定义印刷无机LED管芯的像素区域

    公开(公告)号：US09368549B1

    公开(公告)日：2016-06-14

    申请号：US14843818

    申请日：2015-09-02

    Applicant: Nthdegree Technologies Worldwide Inc.

    Inventor： Bradley S. Oraw ,  Brian D. Ogonowsky

    IPC: H01L33/00 ,  H01L27/15 ,  H01L33/62 ,  H01L33/60 ,  H01L33/50 ,  H01L33/48 ,  H01L33/52

    CPC classification number: H01L27/156 ,  H01L25/0753 ,  H01L33/00 ,  H01L33/005 ,  H01L33/486 ,  H01L33/504 ,  H01L33/505 ,  H01L33/507 ,  H01L33/52 ,  H01L33/60 ,  H01L33/62 ,  H01L2224/24137 ,  H01L2224/32225 ,  H01L2224/73267 ,  H01L2224/82 ,  H01L2224/92244 ,  H01L2933/0058 ,  H01L2933/0066

    Abstract: Over a flexible substrate are formed column lines for a display. Over the substrate and column lines are formed a reflective hydrophobic mesh defining pixels. Over the mesh and column lines is printed an LED ink containing microscopic LED dies. The LED ink de-wets from the mesh. The ink is then cured to electrically connect the bottom electrodes of the LEDs to the column lines within the openings (cells) of the mesh. A dielectric then encapsulates the LEDs while exposing the top electrodes of the LEDs. Transparent row lines are then formed along the rows of the mesh to electrically contact the top electrodes in each row. The LEDs within any cell can be turned on by address in a pair of row and column lines. Phosphor dots may be printed to over blue-emitting LEDs to create red, green, and blue sub-pixels for a full color display.

    Abstract translation: 在柔性基板上形成用于显示器的列线。 在衬底和柱线上形成了限定像素的反射疏水网眼。 在网格和列线上印刷包含微型LED管芯的LED油墨。 LED油墨从网状物中脱湿。 然后将油墨固化以将LED的底部电极电连接到网格的开口（单元）内的列线。 然后电介质封装LED同时暴露LED的顶部电极。 然后沿着网格的行形成透明行线，以与每行中的顶部电极电接触。 任何单元格中的LED都可以通过一行行和列线中的地址打开。 可以将荧光点打印到发蓝光的LED上以产生用于全色显示的红色，绿色和蓝色子像素。

    LED display with patterned pixel landings and printed LEDs
    4.
    发明授权
    LED display with patterned pixel landings and printed LEDs 有权

    公开(公告)号：US10192478B2

    公开(公告)日：2019-01-29

    申请号：US15350625

    申请日：2016-11-14

    Applicant: Nthdegree Technologies Worldwide Inc.

    Inventor： Brian D. Ogonowsky

    IPC: H01L21/00 ,  G09G3/32 ,  H01L33/06 ,  H01L33/32 ,  H01L33/40 ,  H01L33/00 ,  H01L33/48 ,  H01L33/62 ,  H01L33/58 ,  H01L33/54 ,  H01L33/50 ,  H01L25/075

    Abstract: Pixel locations in an addressable display are defined by metal landings on a top surface of a flexible substrate, such as by depositing a metal film and etching the film. The substrate surface may be hydrophobic so that the hydrophobic surface is exposed between the metal landings. The substrate has conductive vias that connect the metal landings to traces on a bottom surface of the substrate for connection to addressing circuitry. LED ink is then blanket-printed over the top surface and cured to electrically connect bottom electrodes of the LEDs to the metal landings. LEDs that fall between the landings are ineffective. A dielectric layer is blanket-printed which exposes the top electrodes, and a transparent conductor layer is blanket-printed over the LEDs to connect all LEDs associated with an individual pixel location in parallel. Accordingly, all printed steps can be performed without any alignment.

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