公开(公告)号：US11198940B2

公开(公告)日：2021-12-14

申请号：US16593986

申请日：2019-10-05

Applicant: NthDegree Technologies Worldwide Inc.

Inventor： Mark David Lowenthal ,  Mark Lewandowski ,  Jeffrey Baldridge ,  Lixin Zheng ,  David Michael Chesler

IPC: C23C16/56 ,  C09D11/52 ,  B82Y40/00 ,  B82Y30/00 ,  H01B1/22 ,  C09D11/033

Abstract: An exemplary printable composition comprises a liquid or gel suspension of a plurality of metallic nanofibers or nanowires; a first solvent; and a viscosity modifier, resin, or binder. In various embodiments, the metallic nanofibers are between about 10 microns to about 100 microns in length, are between about 10 nm to about 120 nm in diameter, and are typically functionalized with a coating or partial coating of polyvinyl pyrrolidone or a similar compound. An exemplary metallic nanofiber ink which can be printed to produce a substantially transparent conductor comprises a plurality of metallic nanofibers; one or more solvents such as 1-butanol, ethanol, 1-pentanol, n-methylpyrrolidone, cyclohexanone, cyclopentanone, 1-hexanol, acetic acid, cyclohexanol, or mixtures thereof; and a viscosity modifier, resin, or binder such as polyvinyl pyrrolidone or a polyimide, for example.

公开(公告)号：US09490407B2

公开(公告)日：2016-11-08

申请号：US15007126

申请日：2016-01-26

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： William Johnstone Ray ,  Mark David Lowenthal ,  Lixin Zheng

IPC: H01L29/06 ,  H01L33/56 ,  H01L25/075 ,  H01L33/06 ,  H01L33/32 ,  H01L33/40 ,  H01L33/42 ,  H01L33/48 ,  H01L33/62

CPC classification number: H01L33/56 ,  H01L25/0753 ,  H01L33/06 ,  H01L33/32 ,  H01L33/405 ,  H01L33/42 ,  H01L33/486 ,  H01L33/62 ,  H01L2924/0002 ,  H01L2933/0016 ,  H01L2933/0066 ,  H01L2924/00 ,  H01L2924/0001

Abstract: A flexible light sheet includes a bottom conductor layer overlying a flexible substrate. An array of vertical light emitting diodes (VLEDs) is printed as an ink over the bottom conductor layer so that bottom electrodes of the VLEDs electrically contact the bottom conductor layer. A top electrode of the VLEDs is formed of a first transparent conductor layer, and a temporary hydrophobic layer is formed over the first transparent conductor layer. A dielectric material is deposited between the VLEDs but is automatically de-wetted off the hydrophobic layer. The hydrophobic layer is then removed, and a second transparent conductor layer is deposited to electrically contact the top electrode of the VLEDs. The VLEDs can be made less than 10 microns in diameter since no top metal bump electrode is used. The VLEDs are illuminated by a voltage differential between the bottom conductor layer and the second transparent conductor layer.

Abstract translation: 柔性光板包括覆盖柔性基板的底部导体层。 垂直发光二极管阵列（VLED）作为墨水印在底部导体层上，使得VLED的底部电极与底部导体层电接触。 VLED的顶部电极由第一透明导体层形成，并且在第一透明导体层上形成临时疏水层。 电介质材料沉积在VLED之间，但自动从疏水层脱湿。 然后去除疏水层，并且沉积第二透明导体层以与VLED的顶部电极电接触。 VLED的直径可以小于10微米，因为不使用顶部金属凸块电极。 VLED由底部导体层和第二透明导体层之间的电压差照明。

公开(公告)号：US20150204490A1

公开(公告)日：2015-07-23

申请号：US14259978

申请日：2014-04-23

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Lixin Zheng ,  Alexander Ray ,  Jeffrey Baldridge

IPC: F21K99/00

CPC classification number: H01L25/0753 ,  H01L33/56 ,  H01L2924/0002 ,  H01L2933/0091 ,  H01L2924/00

Abstract: In one embodiment, a flexible light sheet includes a transparent, thin polymer substrate on which is formed a dielectric first light scattering layer containing nano-particles. A transparent conductor layer is formed over the first light scattering layer. An array of microscopic, inorganic vertical LEDs is printed over the transparent conductor layer so that bottom electrodes of the LEDs make electrical contact to the conductor layer. A dielectric second light scattering layer, also containing the nano-particles, is printed over the transparent conductor layer to laterally surround the LEDs. A top conductor layer makes electrical contact to the top LED electrodes to connect the LEDs in parallel. Light from the LEDs is scattered by the nano-particles in the two light scattering layers by Mei scattering. This reduces total internal reflection in both the first light scattering layer and the transparent conductor layer to increase light extraction.

Abstract translation: 在一个实施例中，柔性光片包括透明的薄聚合物基底，在其上形成包含纳米颗粒的电介质第一光散射层。 在第一光散射层上形成透明导体层。 在透明导体层上印刷微阵列无机垂直LED的阵列，使得LED的底部电极与导体层电接触。 还包含纳米颗粒的介电第二光散射层印在透明导体层上以横向包围LED。 顶部导体层与顶部LED电极电接触以并联连接LED。 通过Mei散射，来自LED的光被两个光散射层中的纳米颗粒散射。 这降低了第一光散射层和透明导体层中的全内反射，以增加光提取。