公开(公告)号：US20150255438A1

公开(公告)日：2015-09-10

申请号：US14559609

申请日：2014-12-03

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Bradley Steven Oraw ,  Bemly Sujeewa Randeniya

IPC: H01L25/075

CPC classification number: H01L25/0753 ,  H01L33/42 ,  H01L33/62 ,  H01L2924/0002 ,  H05K1/00 ,  H01L2924/00

Abstract: Relatively small, electrically isolated segments of LED light sheets are fabricated having an anode terminal and a cathode terminal. The segments contain microscopic printed LEDs that are connected in parallel by two conductive layers sandwiching the LEDs. The top conductive layer is transparent. Separately formed from the light sheet segments is a flexible, large area conductor backplane having a single layer or multiple layers of solid metal strips (traces). The segments are laminated over the backplane's metal pattern to supply power to the segment terminals. An adhesive layer secures the segments to the backplane. The metal pattern may connect the segments in series, or parallel, or form an addressable circuit for a display. The segments may be on a common substrate or physically separated from each other prior to the lamination.

Abstract translation: 制造具有阳极端子和阴极端子的相对小的电隔​​离的LED光片段。 这些段包含通过夹持LED的两个导电层并联连接的微观印刷的LED。 顶层导电层是透明的。 与光片段分开形成的是具有单层或多层固体金属条（迹线）的柔性大面积导体背板。 片段层叠在背板的金属图案上以向片段端子供电。 粘合剂层将片段固定到背板。 金属图案可以将片段串联或并联连接，或形成用于显示器的可寻址电路。 片段可以在共同的衬底上，或在层压之前彼此物理分离。

公开(公告)号：US09123705B2

公开(公告)日：2015-09-01

申请号：US14552212

申请日：2014-11-24

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Richard A. Blanchard ,  William J. Ray ,  Mark D. Lowenthal ,  Xiaorong Cai ,  Theodore Kamins

IPC: H01L23/00 ,  H01L23/48 ,  H01L21/768 ,  H01L21/288 ,  H01L25/065 ,  H01L25/00 ,  H01L23/498 ,  H01L21/48 ,  H01L23/522 ,  H01L23/532

CPC classification number: H01L23/481 ,  H01L21/288 ,  H01L21/486 ,  H01L21/76879 ,  H01L21/76882 ,  H01L21/76898 ,  H01L23/49827 ,  H01L23/5226 ,  H01L23/5328 ,  H01L24/05 ,  H01L24/06 ,  H01L24/08 ,  H01L24/19 ,  H01L24/80 ,  H01L24/94 ,  H01L25/0657 ,  H01L25/50 ,  H01L2224/03002 ,  H01L2224/0332 ,  H01L2224/05568 ,  H01L2224/0557 ,  H01L2224/06181 ,  H01L2224/08146 ,  H01L2224/08165 ,  H01L2224/73265 ,  H01L2224/76155 ,  H01L2224/83191 ,  H01L2224/94 ,  H01L2225/06513 ,  H01L2225/06517 ,  H01L2225/06572 ,  H01L2924/12042 ,  H01L2224/03 ,  H01L2224/80 ,  H01L2924/00

Abstract: Vias (holes) are formed in a wafer or a dielectric layer. A low viscosity conductive ink, containing microscopic metal particles, is deposited over the top surface of the wafer to cover the vias. An external force is applied to urge the ink into the vias, including an electrical force, a magnetic force, a centrifugal force, a vacuum, or a suction force for outgassing the air in the vias. Any remaining ink on the surface is removed by a squeegee, spinning, an air knife, or removal of an underlying photoresist layer. The ink in the vias is heated to evaporate the liquid and sinter the remaining metal particles to form a conductive path in the vias. The resulting wafer may be bonded to one or more other wafers and singulated to form a 3-D module.

公开(公告)号：US09099568B2

公开(公告)日：2015-08-04

申请号：US14204886

申请日：2014-03-11

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Richard Austin Blanchard

IPC: H01L21/84 ,  H01L25/00 ,  H01L27/12 ,  H01L23/00 ,  H01L25/07 ,  H01L25/065 ,  H01L25/075

CPC classification number: H01L21/84 ,  H01L21/6835 ,  H01L24/05 ,  H01L24/06 ,  H01L24/24 ,  H01L24/25 ,  H01L24/32 ,  H01L24/73 ,  H01L24/82 ,  H01L24/92 ,  H01L24/95 ,  H01L24/97 ,  H01L25/0655 ,  H01L25/072 ,  H01L25/0753 ,  H01L25/50 ,  H01L27/12 ,  H01L33/20 ,  H01L2221/68327 ,  H01L2221/68381 ,  H01L2224/05552 ,  H01L2224/05555 ,  H01L2224/06051 ,  H01L2224/06181 ,  H01L2224/24137 ,  H01L2224/25105 ,  H01L2224/25174 ,  H01L2224/32225 ,  H01L2224/73267 ,  H01L2224/82104 ,  H01L2224/92244 ,  H01L2224/95085 ,  H01L2224/95101 ,  H01L2224/95115 ,  H01L2224/95144 ,  H01L2224/95145 ,  H01L2924/10253 ,  H01L2924/12041 ,  H01L2924/1301 ,  H01L2924/13034 ,  H01L2924/1305 ,  H01L2924/13062 ,  H01L2924/13091 ,  H01L2924/00 ,  H01L2924/00014

Abstract: A layer of microscopic, 3-terminal transistors is printed over a first conductor layer so that bottom electrodes of the transistors electrically contact the first conductor layer. A first dielectric layer overlies the first conductor layer, and a second conductor layer over the first dielectric layer contacts intermediate electrodes on the transistors between the bottom electrodes and top electrodes. A second dielectric layer overlies the second conductor layer, and a third conductor layer over the second dielectric layer contacts the top electrodes. The devices are thus electrically connected in parallel by a combination of the first conductor layer, the second conductor layer, and the third conductor layer. Separate groups of the devices may be interconnected to form more complex circuits. The resulting circuit may be a very thin flex-circuit.

Abstract translation: 在第一导体层上印刷一层微观的3端子晶体管，使得晶体管的底部电极与第一导体层电接触。 第一电介质层覆盖在第一导体层上，第一电介质层上的第二导体层接触底电极和顶电极之间的晶体管上的中间电极。 第二电介质层覆盖在第二导体层上，第二电介质层上的第三导体层接触顶电极。 因此，这些器件通过第一导体层，第二导体层和第三导体层的组合而并联连接。 单独的设备组可以互连以形成更复杂的电路。 所得到的电路可能是非常薄的柔性电路。

公开(公告)号：US08982446B2

公开(公告)日：2015-03-17

申请号：US14095526

申请日：2013-12-03

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： William J. Ray

IPC: G02B26/00 ,  G02F1/29 ,  H01L33/60 ,  G02B26/08 ,  G02F1/23 ,  G02B26/02 ,  H01L33/50

CPC classification number: G02B26/007 ,  G02B26/026 ,  G02B26/0858 ,  G02F1/21 ,  G02F1/23 ,  G02F1/29 ,  G02F2202/32 ,  G02F2203/12 ,  H01L33/50 ,  H01L33/502 ,  H01L33/60

Abstract: A reflective color display is disclosed. A substrate supports a first conductor layer and pixel wells. A piezoelectric segment is formed in each pixel well over the first conductor layer. A second conductor layer overlies the piezoelectric segments, wherein an electric field created across any piezoelectric segment causes the piezoelectric segment to expand or contract under control of the electric field. A Bragg reflector segment overlies each piezoelectric segment and is compressible by expansion of the underlying piezoelectric segment. A white light LED layer overlies the Bragg reflector segments. By varying the electric field across each piezoelectric segment, the overlying Bragg reflector segment is controlled to reflect a selected wavelength for each pixel of the display. The walls of the pixel wells provide acoustic isolation between adjacent pixel wells. An acoustic membrane isolates the Bragg reflector segment from high frequency vibrations of the piezoelectric segment.

Abstract translation: 公开了一种反射彩色显示器。 衬底支撑第一导体层和像素阱。 在每个像素中在第一导体层上形成压电段。 第二导体层覆盖在压电段上，其中跨越任何压电段产生的电场使压电段在电场的控制下膨胀或收缩。 布拉格反射器部分覆盖每个压电段，并且可通过下面的压电段的膨胀来压缩。 白光LED层叠在布拉格反射器部分上。 通过改变跨越每个压电段的电场，控制上覆布拉格反射器段以反映显示器每个像素的选定波长。 像素孔的壁提供相邻像素孔之间的声学​​隔离。 声膜将布拉格反射器段与压电段的高频振动隔离开。

公开(公告)号：US20150060907A1

公开(公告)日：2015-03-05

申请号：US14542192

申请日：2014-11-14

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Reuben Rettke

IPC: H01L25/075 ,  H01L33/50

CPC classification number: H01L25/0753 ,  H01L33/502 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Many thousands of micro-LEDs (e.g., 25 microns per side) are deposited on a substrate. Some of the LEDs are formed to emit a peak wavelength of 450 nm (blue), and some are formed to emit a peak wavelength of 490 nm (cyan). A YAG (yellow) phosphor is then deposited on the LEDs, or a remote YAG layer is used. YAG phosphor is most efficiently excited at 450 nm and has a very weak emission at 490 nm The two types of LEDs are GaN based and can be driven at the same current. The ratio of the two types of LEDs is controlled to achieve the desired overall color emission of the LED lamp. The blue LEDs optimally excite the YAG phosphor to produce white light having blue and yellow components, and the cyan LEDs broaden the emission spectrum to increase the CRI of the lamp while improving luminous efficiency. Other embodiments are described.

Abstract translation: 数千个微型LED（例如每侧25微米）沉积在衬底上。 一些LED形成为发射450nm（蓝色）的峰值波长，并且一些形成为发射490nm（青色）的峰值波长。 然后将YAG（黄色）磷光体沉积在LED上，或者使用远程YAG层。 YAG荧光粉在450nm处被最有效地激发，并且在490nm处具有非常弱的发射。两种类型的LED是基于GaN的并且可以以相同的电流驱动。 控制两种类型的LED的比率以实现LED灯的期望的总体颜色发射。 蓝色LED最佳地激发YAG荧光粉以产生具有蓝色和黄色分量的白光，并且青色LED扩大发射光谱以增加灯的CRI，同时提高发光效率。 描述其他实施例。

公开(公告)号：US20150054003A1

公开(公告)日：2015-02-26

申请号：US14462881

申请日：2014-08-19

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Bradley Steven Oraw

IPC: H01L27/15 ,  H01L33/32 ,  H01L33/38 ,  H01L33/42 ,  H01L33/00 ,  H01L33/46

CPC classification number: F21K9/00 ,  H01L25/0753 ,  H01L33/42 ,  H01L33/44 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A method of forming a light sheet includes depositing a reflective conductor layer over a substrate, printing a layer of microscopic inorganic LEDs on the conductor layer, depositing a first dielectric layer, having a first index of refraction, over the conductor layer and along sidewalls of the LEDs, and depositing a transparent conductor layer over the LEDs so that the LEDs are connected in parallel. The transparent conductor layer may be a wire mesh with openings. A liquid or paste polymer layer is then deposited over the transparent conductor layer and directly contacts the first dielectric layer. The indices of refraction of both layers are similar to reduce TIR. The top surface of the polymer layer is then molded to contain light extraction features to reduce waveguiding in the light sheet. In another embodiment, the substrate surface is the light exit surface that has the light extraction features

Abstract translation: 形成光片的方法包括在衬底上沉积反射导体层，在导体层上印刷微观无机LED层，在导体层上沉积具有第一折射率的第一介电层，并沿着导体层的侧壁 LED，并且在LED上沉积透明导体层，使得LED并联连接。 透明导体层可以是具有开口的金属丝网。 然后将液体或糊状聚合物层沉积在透明导体层上并直接接触第一介电层。 两层折射率相似，减少TIR。 然后将聚合物层的顶表面模制成包含光提取特征以减少光片中的波导。 在另一个实施例中，衬底表面是具有光提取特征的光出射表面

公开(公告)号：US08963168B1

公开(公告)日：2015-02-24

申请号：US14542192

申请日：2014-11-14

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Reuben Rettke

IPC: H01L27/15 ,  H01L31/12 ,  H01L33/00 ,  H01L25/075 ,  H01L33/50

CPC classification number: H01L25/0753 ,  H01L33/502 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Many thousands of micro-LEDs (e.g., 25 microns per side) are deposited on a substrate. Some of the LEDs are formed to emit a peak wavelength of 450 nm (blue), and some are formed to emit a peak wavelength of 490 nm (cyan). A YAG (yellow) phosphor is then deposited on the LEDs, or a remote YAG layer is used. YAG phosphor is most efficiently excited at 450 nm and has a very weak emission at 490 nm. The two types of LEDs are GaN based and can be driven at the same current. The ratio of the two types of LEDs is controlled to achieve the desired overall color emission of the LED lamp. The blue LEDs optimally excite the YAG phosphor to produce white light having blue and yellow components, and the cyan LEDs broaden the emission spectrum to increase the CRI of the lamp while improving luminous efficiency. Other embodiments are described.

Abstract translation: 数千个微型LED（例如每侧25微米）沉积在衬底上。 一些LED形成为发射450nm（蓝色）的峰值波长，并且一些形成为发射490nm（青色）的峰值波长。 然后将YAG（黄色）磷光体沉积在LED上，或者使用远程YAG层。 YAG荧光粉在450nm处最有效地被激发，并且在490nm处具有非常弱的发射。 两种类型的LED是基于GaN的，并且可以以相同的电流驱动。 控制两种类型的LED的比率以实现LED灯的期望的总体颜色发射。 蓝色LED最佳地激发YAG荧光粉以产生具有蓝色和黄色分量的白光，并且青色LED扩大发射光谱以增加灯的CRI，同时提高发光效率。 描述其他实施例。

公开(公告)号：US20140312332A1

公开(公告)日：2014-10-23

申请号：US14322237

申请日：2014-07-02

Applicant: NthDegree Technologies Worldwide Inc.

Inventor： Mark David Lowenthal ,  William Johnstone Ray ,  Neil O. Shotton ,  Richard A. Blanchard ,  Brad Oraw ,  Mark Allan Lewandowski ,  Jeffrey Baldridge ,  Eric Anthony Perozziello

IPC: H01L51/00 ,  H01L33/56 ,  H01L31/0203 ,  H01L51/44 ,  H01L51/52

CPC classification number: H01L31/0203 ,  B82Y20/00 ,  H01L24/95 ,  H01L25/048 ,  H01L25/0753 ,  H01L27/3281 ,  H01L31/035236 ,  H01L31/105 ,  H01L31/1852 ,  H01L31/1856 ,  H01L33/0079 ,  H01L33/20 ,  H01L33/38 ,  H01L33/56 ,  H01L51/0004 ,  H01L51/0007 ,  H01L51/448 ,  H01L51/52 ,  H01L51/5203 ,  H01L51/5237 ,  H01L51/56 ,  H01L2924/09701 ,  H01L2924/12041 ,  H01L2924/12042 ,  H01L2924/13033 ,  H01L2924/13034 ,  H01L2924/1305 ,  H01L2924/1306 ,  H01L2924/13062 ,  H01L2924/13091 ,  H01L2924/14 ,  Y02E10/544 ,  Y02E10/549 ,  H01L2924/00

Abstract: An exemplary printable composition of a liquid or gel suspension of diodes comprises a plurality of diodes, a first solvent and/or a viscosity modifier. In other exemplary embodiments a second solvent is also included, and the composition has a viscosity substantially between about 100 cps and about 25,000 cps at about 25° C. In an exemplary embodiment, a composition comprises: a plurality of diodes or other two-terminal integrated circuits; one or more solvents comprising about 15% to 99.9% of any of N-propanol, isopropanol, dipropylene glycol, diethylene glycol, propylene glycol, 1-methoxy-2-propanol, N-octanol, ethanol, tetrahydrofurfuryl alcohol, cyclohexanol, and mixtures thereof; a viscosity modifier comprising about 0.10% to 2.5% methoxy propyl methylcellulose resin or hydroxy propyl methylcellulose resin or mixtures thereof; and about 0.01% to 2.5% of a plurality of substantially optically transparent and chemically inert particles having a range of sizes between about 10 to about 50 microns.

Abstract translation: 二极管的液体或凝胶悬浮液的示例性可印刷组合物包括多个二极管，第一溶剂和/或粘度调节剂。 在其它示例性实施方案中，还包括第二溶剂，并且组合物在约25℃下的粘度基本上在约100cps至约25,000cps之间。在示例性实施方案中，组合物包含：多个二极管或其它两端 集成电路; 一种或多种包含约15％至99.9％的任何N-丙醇，异丙醇，二丙二醇，二甘醇，丙二醇，1-甲氧基-2-丙醇，N-辛醇，乙醇，四氢糠醇，环己醇和其混合物 的; 包含约0.10％至2.5％甲氧基丙基甲基纤维素树脂或羟基丙基甲基纤维素树脂或其混合物的粘度调节剂; 和约0.01％至2.5％的多个基本上光学透明和化学惰性的颗粒，其尺寸范围在约10至约50微米之间。

公开(公告)号：US20140209936A1

公开(公告)日：2014-07-31

申请号：US14150199

申请日：2014-01-08

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： Bradley Steven Oraw

IPC: H01L27/15

CPC classification number: H01L25/0756 ,  H01L21/568 ,  H01L33/387 ,  H01L33/42 ,  H01L33/44 ,  H01L2224/04105 ,  H01L2224/20 ,  H01L2224/24137 ,  H01L2224/73267 ,  H01L2224/92244 ,  H01L2924/0002 ,  H01L2933/0033 ,  H01L2924/00

Abstract: A first layer of first vertical light emitting diodes (VLEDs) is printed on a conductor surface. A first transparent conductor layer is deposited over the first VLEDs to electrically contact top electrodes of the first VLEDs. A second layer of second VLEDs is printed on the first transparent conductor layer. Since the VLEDs are printed as an ink, the second VLEDs are not vertically aligned with the first VLEDs, so light from the first VLEDs is not substantially blocked by the second VLEDs when the VLEDs are turned on. A second transparent conductor layer is deposited over the second VLEDs to electrically contact top electrodes of the second VLEDs. By this structure, the first VLEDs are connected in parallel, the second VLEDs are connected in parallel, and the first layer of first VLEDs and the second layer of second VLEDs are connected in series by the first transparent conductor layer.

Abstract translation: 第一层第一垂直发光二极管（VLED）印在导体表面上。 在第一VLED上沉积第一透明导体层以电接触第一VLED的顶部电极。 在第一透明导体层上印刷第二层第二VLED。 由于VLED被印刷为墨水，所以第二VLED不与第一VLED垂直对准，因此当VLED被打开时，来自第一VLED的光基本上被第二VLED阻挡。 在第二VLED上沉积第二透明导体层以电接触第二VLED的顶部电极。 通过这种结构，第一VLED并联连接，第二VLED并联连接，第一VLED的第一层和第二VLED的第二层通过第一透明导体层串联连接。

公开(公告)号：US08772814B2

公开(公告)日：2014-07-08

申请号：US13906751

申请日：2013-05-31

Applicant: Nthdegree Technologies Worldwide Inc.

Inventor： William J. Ray ,  Reuben Rettke ,  Mark D. Lowenthal ,  Alexander Ray

IPC: H01L33/00 ,  H01L33/50 ,  C09K11/02

CPC classification number: F21K9/64 ,  C09K11/025 ,  C09K11/08 ,  H01L33/501 ,  H01L33/502 ,  H01L33/505 ,  H01L33/507 ,  H01L33/508 ,  H01L33/54 ,  H01L33/58 ,  H01L2933/0083 ,  H01L2933/0091 ,  Y02B20/181

Abstract: LED dies are suspended in an ink and printed on a first support substrate to form a light emitting layer having a light emitting surface emitting primary light, such as blue light. A mixture of a transparent binder, phosphor powder, and transparent glass beads is formed as an ink and printed over the light emitting surface. The mixture forms a wavelength conversion layer when cured. The beads are preferably sized so that the tops of the beads protrude completely through the conversion layer. Some of the primary light passes through the beads with virtually no attenuation or backscattering, and some of the primary light is converted by the phosphor to secondary light. The combination of the secondary light and the primary light passing though the beads may form white light. The overall color is highly controllable by controlling the percentage weight of the beads.

Abstract translation: LED芯片悬挂在墨水中并印刷在第一支撑基板上以形成具有发射初级光的发光表面的发光层，例如蓝色光。 形成透明粘合剂，荧光体粉末和透明玻璃珠的混合物作为墨水并印刷在发光表面上。 混合物在固化时形成波长转换层。 珠子的尺寸优选使得珠的顶部完全突出通过转换层。 一些初级光通过珠子几乎没有衰减或反向散射，并且一些初级光被磷光体转换成二次光。 二次光和通过珠的初级光的组合可以形成白光。 通过控制珠子的重量百分比，整体颜色是高度可控的。