公开(公告)号：US20210005797A1

公开(公告)日：2021-01-07

申请号：US16916321

申请日：2020-06-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihoon KANG ,  Jitsuo OTA ,  Jenghun SUH ,  Jaephil SHIM ,  Myunghee KIM

IPC: H01L33/58 ,  H01L25/075 ,  H01L27/12 ,  H01L33/00 ,  H01L33/50 ,  H01L33/60 ,  H01L33/62

Abstract: An LED device includes: a first semiconductor layer of a first type; a second semiconductor layer of a second type; a light emitting layer formed between the first semiconductor layer and the second semiconductor layer and configured to emit light; and a filter formed on the second semiconductor layer and configured to transmit light in the second wavelength band within the first wavelength band. The filter includes a defect layer, first refractive layers, and second refractive layers having a refractive index greater than a refractive index of the first refractive layers, the first refractive layers and the second refractive layers are formed alternately on one side and other side of the defect layer. A thickness of the defect layer is determined based on a center wavelength of the first wavelength band, a peak wavelength of the second wavelength band and a refractive index of the defect layer.

公开(公告)号：US20200161499A1

公开(公告)日：2020-05-21

申请号：US16684720

申请日：2019-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jitsuo OTA ,  Jihoon KANG ,  Sungtae KIM ,  Shunsuke KIMURA ,  Yongdok CHA

IPC: H01L33/00 ,  H01L33/10 ,  H01L25/075 ,  H01L33/62

Abstract: An LED, a manufacturing method thereof, and a display device including an LED are provided. Specifically, the disclosure relates to a flip-chip LED with high efficiency including a current confinement structure and a manufacturing method thereof, and a display device including such an LED. In particular, a flip-chip LED according to the disclosure includes a resistive area that surrounds a light-emitting layer and restricts current flow from the light emitting layer to the sidewalls.

公开(公告)号：US20230163260A1

公开(公告)日：2023-05-25

申请号：US18094718

申请日：2023-01-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihoon KANG ,  Jitsuo OTA ,  Myunghee KIM ,  Jenghun SUH

IPC: H01L33/50 ,  H01L33/62 ,  H01L33/38 ,  H01L25/075

CPC classification number: H01L33/505 ,  H01L25/0753 ,  H01L33/62 ,  H01L33/382 ,  H01L33/502

Abstract: A micro LED and a display module are provided. The micro LED includes a first semiconductor layer having a light emission surface and electronically connected to a first electrode; a second semiconductor layer electronically connected to a second electrode; an active layer disposed between the first and second semiconductor layers; and a wavelength conversion layer stacked on the light emission surface of the first semiconductor layer. The wavelength conversion layer is made of a semiconductor having a chalcopyrite-structure. The display module includes a plurality of such plurality of micro LEDs arranged in pixel units, which are electronically connected to a plurality of TFT electrodes. The module also includes a glass substrate and a TFT layer formed on one surface of the glass substrate, and the plurality of TFT electrodes are formed on the TFT layer. The resulting TFT layer does not require a color filter or a cover layer.

公开(公告)号：US20200349882A1

公开(公告)日：2020-11-05

申请号：US16864702

申请日：2020-05-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Myunghee KIM ,  Jenghun SUH ,  Jaephil SHIM ,  Jihoon KANG ,  Jitsuo OTA

IPC: G09G3/32 ,  H01L51/50 ,  G09G3/20 ,  H01L33/00 ,  H01L51/52

Abstract: Disclosed are a display panel including an LED device and a method for manufacturing a display module. According to an embodiment, the method for manufacturing the display module includes: forming a plurality of light emitting diodes (LEDs); and forming a plurality of partition walls that divide light-emitting regions by each of the plurality of LEDs, wherein the forming the plurality of LEDs includes: etching a growth substrate to form a plurality of LEDs and forming a plurality of protrusions and a plurality of depressions on the growth substrate; and forming a reflector layer on a surface of the plurality of protrusions and a surface of the plurality of depressions, and wherein the forming the plurality of partition walls includes removing a part of the growth substrate so that the plurality of partition walls are formed based on the plurality of protrusions, and a space between the plurality of partition walls is formed based on the plurality of depressions.

公开(公告)号：US20230144996A1

公开(公告)日：2023-05-11

申请号：US18096819

申请日：2023-01-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jihoon KANG ,  Jenghun SUH ,  Jitsuo OTA ,  Myunghee KIM

IPC: H01L33/38 ,  H01L33/14 ,  H01L33/62 ,  H01L33/40 ,  H01L25/075

CPC classification number: H01L33/382 ,  H01L33/14 ,  H01L33/62 ,  H01L33/40 ,  H01L25/0753

Abstract: A micro light emitting diode (LED) includes: a current spreading layer including a light-emitting surface; a first electrode disposed on the light-emitting surface of the current spreading layer and electrically connected to the current spreading layer; a first cladding layer and a second cladding layer that are stacked on the current spreading layer; an active layer disposed between the first cladding layer and the second cladding layer; a second electrode; and a current guiding part disposed between the second electrode and the second cladding layer, and positioned in a central part of the second cladding layer, the current guiding part being and configured to guide a current to flow away from a side surface of the micro LED.

公开(公告)号：US20210280631A1

公开(公告)日：2021-09-09

申请号：US17257610

申请日：2019-07-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jinhee KANG ,  Jitsuo OTA

IPC: H01L27/15 ,  H01L25/075 ,  H01L27/12 ,  H01L33/00 ,  H01L33/06 ,  H01L33/32 ,  H01L33/38 ,  H01L33/46 ,  H01L33/62 ,  G09G3/32

Abstract: A light emitting element, a manufacturing method therefor, and a display device including the light emitting element are disclosed. Particularly, disclosed are a multi-tunnel junction light emitting element having two or more light emitting regions, which are horizontally separated from each other, and a manufacturing method therefor, and disclosed is a display device which includes the light emitting element so as to efficiently arrange pixels and independently control the light emitting regions.

公开(公告)号：US20200350477A1

公开(公告)日：2020-11-05

申请号：US16864564

申请日：2020-05-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaephil SHIM ,  Jihoon KANG ,  Myunghee KIM ,  Jenghun SUH ,  Jitsuo OTA

IPC: H01L33/62 ,  H01L33/50 ,  H01L33/60 ,  G09G3/32 ,  H01L33/00 ,  H01L25/075

Abstract: A display panel including a plurality of LED elements and a driving circuit configured to drive the plurality of LED elements. The plurality of LED elements includes an LED element having a first light emitting cell including a first light emitting layer, a tunnel junction layer formed on the first light emitting layer, and a second light emitting cell formed on the tunnel junction layer and including a second light emitting layer. A first electrode is electrically connected to the first light emitting cell, and a second electrode is electrically connected to the second light emitting cell. The first light emitting cell is electrically connected to the second light emitting cell through the tunnel junction layer. The LED element is a flip-chip type LED element.

公开(公告)号：US20200327844A1

公开(公告)日：2020-10-15

申请号：US16844253

申请日：2020-04-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jitsuo OTA ,  Jihoon KANG

IPC: G09G3/20 ,  H01L25/075 ,  H01L27/12 ,  H01L27/15 ,  H01L33/24 ,  H01L33/32 ,  H01L33/38 ,  H01L33/44 ,  H01L33/00 ,  G09G3/32 ,  H01L33/18

Abstract: The disclosure relates to a light emitting diode (LED) that is capable of emitting a plurality of lights having different wavelengths from one another, and independently controlling the intensity of the plurality of emitted lights and a manufacturing method of the LED, and a display device including the LED. Specifically, an LED according to the disclosure includes a first light emitting cell including an n-type semiconductor layer, a p-type semiconductor layer, and a first light emitting layer which respectively include at least one non-planar area, the first light emitting layer emitting a light of a first wavelength, a second light emitting cell including an n-type semiconductor layer, a p-type semiconductor layer, and a second light emitting layer which respectively consist of a planar area, the second light emitting layer emitting a light of a second wavelength different from the first wavelength of the light emitted from the first light emitting layer, a common electrode commonly connected with the first light emitting cell and the second light emitting cell, and a first pixel electrode and a second pixel electrode independently connected with each of the first light emitting cell and the second light emitting cell.