公开(公告)号：US08906713B2

公开(公告)日：2014-12-09

申请号：US13436613

申请日：2012-03-30

Applicant: Reuben Rettke

Inventor： Reuben Rettke

IPC: H01L21/00

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：US20130258636A1

公开(公告)日：2013-10-03

申请号：US13436613

申请日：2012-03-30

Applicant: Reuben Rettke

Inventor： Reuben Rettke

IPC: F21V9/16 ,  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。