公开(公告)号：US11145689B2

公开(公告)日：2021-10-12

申请号：US16203709

申请日：2018-11-29

申请人： Cree, Inc.

发明人： Nikolas Hall ,  Derek Miller ,  Anoop Mathew ,  Colin Blakely ,  Luis Breva ,  Jesse Reiherzer ,  David Todd Emerson

IPC分类号： H01L23/544 ,  H01L27/15 ,  H01L33/22 ,  H01L33/60 ,  H01L33/62 ,  H01L33/00

摘要： Solid-state lighting devices including light-emitting diodes (LEDs) and more particularly LED chips and related methods are disclosed. LED chips are provided that include an indicia arranged between a primary light-emitting face and a mounting face of the LED chip. The indicia may include at least one of a logo, one or more alphanumeric characters, or a symbol, among others that are configured to convey information. Arrangements of at least one of an n-contact, a p-contact, or a reflector layer of the LED chip may form the indicia. LED chips are also provided where at least a portion of an indicia is arranged on a mounting face of the LED chip. Indicia are provided that may be visible through primary light-emitting faces when LED chips are electrically activated or electrically deactivated. In this regard, the indicia may be embedded within LED chips while still being able to convey information.

公开(公告)号：US10283681B2

公开(公告)日：2019-05-07

申请号：US14120297

申请日：2014-05-14

申请人： Cree, Inc.

发明人： Brian T. Collins ,  Matthew Donofrio ,  Kevin W. Haberern ,  Bennett Langsdorf ,  Anoop Mathew ,  Harry A. Seibel ,  Iliya Todorov ,  Bradley E. Williams

IPC分类号： H01L33/00 ,  H01L33/50 ,  H01L33/44

摘要： A phosphor-converted light emitting device includes a light emitting diode (LED) on a substrate, where the LED comprises a stack of epitaxial layers comprising a p-n junction. A wavelength conversion material is in optical communication with the LED. According to one embodiment of the phosphor-converted light emitting device, a selective filter is adjacent to the wavelength conversion material, and the selective filter comprises a plurality of nanoparticles for absorbing light from the LED not down-converted by the wavelength conversion material. According to another embodiment of the phosphor-converted light emitting device, a perpendicular distance between a perimeter of the LED on the substrate and an edge of the substrate is at least about 24 microns. According to another embodiment of the phosphor-converted light emitting device, the LED comprises a mirror layer on one or more sidewalls thereof for reducing light leakage through the sidewalls.

公开(公告)号：US20200176507A1

公开(公告)日：2020-06-04

申请号：US16203709

申请日：2018-11-29

申请人： Cree, Inc.

发明人： Nikolas Hall ,  Derek Miller ,  Anoop Mathew ,  Colin Blakely ,  Luis Breva ,  Jesse Reiherzer ,  David Todd Emerson

IPC分类号： H01L27/15 ,  H01L23/544 ,  H01L33/22 ,  H01L33/60 ,  H01L33/62 ,  H01L33/00

摘要： Solid-state lighting devices including light-emitting diodes (LEDs) and more particularly LED chips and related methods are disclosed. LED chips are provided that include an indicia arranged between a primary light-emitting face and a mounting face of the LED chip. The indicia may include at least one of a logo, one or more alphanumeric characters, or a symbol, among others that are configured to convey information. Arrangements of at least one of an n-contact, a p-contact, or a reflector layer of the LED chip may form the indicia. LED chips are also provided where at least a portion of an indicia is arranged on a mounting face of the LED chip. Indicia are provided that may be visible through primary light-emitting faces when LED chips are electrically activated or electrically deactivated. In this regard, the indicia may be embedded within LED chips while still being able to convey information.

公开(公告)号：US20150069430A1

公开(公告)日：2015-03-12

申请号：US14120297

申请日：2014-05-14

申请人： Cree, Inc.

发明人： Brian T. Collins ,  Matthew Donofrio ,  Kevin W. Haberern ,  Bennett Langsdorf ,  Anoop Mathew ,  Harry A. Seibel ,  Iliya Todorov ,  Bradley E. Williams

IPC分类号： H01L33/50 ,  H01L27/15

CPC分类号： H01L33/50 ,  H01L33/44

摘要： A phosphor-converted light emitting device includes a light emitting diode (LED) on a substrate, where the LED comprises a stack of epitaxial layers comprising a p-n junction. A wavelength conversion material is in optical communication with the LED. According to one embodiment of the phosphor-converted light emitting device, a selective filter is adjacent to the wavelength conversion material, and the selective filter comprises a plurality of nanoparticles for absorbing light from the LED not down-converted by the wavelength conversion material. According to another embodiment of the phosphor-converted light emitting device, a perpendicular distance between a perimeter of the LED on the substrate and an edge of the substrate is at least about 24 microns. According to another embodiment of the phosphor-converted light emitting device, the LED comprises a mirror layer on one or more sidewalls thereof for reducing light leakage through the sidewalls.

摘要翻译： 磷光体转换发光器件包括在衬底上的发光二极管（LED），其中LED包括一叠包括p-n结的外延层。 波长转换材料与LED光学通信。 根据荧光体转换发光器件的一个实施例，选择滤光器与波长转换材料相邻，并且选择滤光器包括多个纳米颗粒，用于吸收未被波长转换材料下转换的LED的光。 根据磷光体转换发光器件的另一实施例，衬底上LED的周边与衬底的边缘之间的垂直距离为至少约24微米。 根据荧光体转换发光器件的另一实施例，LED包括在其一个或多个侧壁上的镜层，用于减少通过侧壁的光泄漏。