公开(公告)号：US10566381B2

公开(公告)日：2020-02-18

申请号：US16154949

申请日：2018-10-09

Applicant: LG Display Co., Ltd.

Inventor： YongSeok Kwak ,  Kiyong Yang ,  JinSu Moon ,  MyungWon Seo

IPC: H01L27/15 ,  H01L25/18 ,  H01L33/50 ,  H01L33/00 ,  H01L33/44 ,  G09G3/3225 ,  H01L27/12 ,  G09G3/32 ,  H01L25/075

Abstract: A light-emitting diode (LED) chip and a display device having the same are provided. A green LED is regrown on a blue LED to produce blue and green light, and a red phosphor is disposed on the blue or green LED to produce red light. Red light, green light, and blue light are to be produced using a single LED chip. The single LED chip forms three subpixels therein so as to facilitate a transfer process of the LED chip to a display panel. The LED chip is configured based on the blue, green, and blue LEDs so as to facilitate the fabrication and driving of the LED chip.

公开(公告)号：US10693042B2

公开(公告)日：2020-06-23

申请号：US16152711

申请日：2018-10-05

Applicant: LG Display Co., Ltd.

Inventor： Taeil Jung ,  Il-Soo Kim ,  YongSeok Kwak

IPC: H01L33/38 ,  H01L33/44 ,  H01L25/16 ,  H01L33/14 ,  H01L33/32

Abstract: A light-emitting device and a display device using the same. The light-emitting device improves the reliability of a process of disposing light-emitting devices. The light-emitting device is configured to ensure electrical connections even if the light-emitting device is inverted while being disposed on a substrate. The light-emitting device includes an n-type semiconductor layer and a p-type semiconductor layer. N-type electrodes and p-type electrodes are disposed on both sides of top and bottom surfaces of the light-emitting device. Contact holes are provided to electrically connect one of the n-type electrodes to the n-type semiconductor layer and one of the p-type electrodes to the p-type semiconductor layer. When the light-emitting device is inverted while being disposed on a substrate, the light-emitting device operates ordinarily, thereby reducing the defect rate of a display device.

公开(公告)号：US20240178266A1

公开(公告)日：2024-05-30

申请号：US18474912

申请日：2023-09-26

Applicant: LG Display Co., Ltd.

Inventor： Il-Soo Kim ,  YongSeok Kwak ,  Myungsoo Han ,  Hyowon Kwon

IPC: H01L27/15 ,  H01L25/16

CPC classification number: H01L27/15 ,  H01L25/167

Abstract: According to an aspect of the present disclosure, a light emitting device and a display apparatus including the same are discussed. The light emitting device can include an n-type electrode, a first n-type layer disposed on the n-type electrode, a first active layer disposed on the first n-type layer, a first p-type layer disposed on the first active layer, a p-type electrode disposed on the first p-type layer, a second p-type layer disposed on a partial area of the p-type electrode, a second active layer disposed on the second p-type layer, and a second n-type layer disposed on the second active layer.

公开(公告)号：US20230215993A1

公开(公告)日：2023-07-06

申请号：US17979600

申请日：2022-11-02

Applicant: LG Display Co., Ltd.

Inventor： Il-Soo Kim ,  YongSeok Kwak ,  KyuOh Kwon ,  SeungJun Lee

IPC: H01L33/50 ,  H01L25/075

CPC classification number: H01L33/508 ,  H01L25/0753

Abstract: A display device according to an embodiment of the present disclosure includes a substrate on which a plurality of sub-pixels are defined, a plurality of LEDs disposed in each of the plurality of sub-pixels, and a plurality of color conversion layers covering the plurality of LEDs. The plurality of color conversion layers each include a plurality of color conversion material layers that are stacked to be spaced apart from each other. Accordingly, according to the present disclosure, it is possible to minimize or reduce light lost inside the color conversion layer by separating the plurality of color conversion material layers from each other, and improve color conversion efficiency and luminance.

公开(公告)号：US11309458B2

公开(公告)日：2022-04-19

申请号：US16878215

申请日：2020-05-19

Applicant: LG Display Co., Ltd.

Inventor： Taeil Jung ,  Il-Soo Kim ,  YongSeok Kwak

IPC: H01L33/38 ,  H01L33/44 ,  H01L25/16 ,  H01L33/14 ,  H01L33/32

Abstract: A light-emitting device and a display device using the same. The light-emitting device improves the reliability of a process of disposing light-emitting devices. The light-emitting device is configured to ensure electrical connections even if the light-emitting device is inverted while being disposed on a substrate. The light-emitting device includes an n-type semiconductor layer and a p-type semiconductor layer. N-type electrodes and p-type electrodes are disposed on both sides of top and bottom surfaces of the light-emitting device. Contact holes are provided to electrically connect one of the n-type electrodes to the n-type semiconductor layer and one of the p-type electrodes to the p-type semiconductor layer. When the light-emitting device is inverted while being disposed on a substrate, the light-emitting device operates ordinarily, thereby reducing the defect rate of a display device.

公开(公告)号：US11923480B2

公开(公告)日：2024-03-05

申请号：US17697653

申请日：2022-03-17

Applicant: LG Display Co., Ltd.

Inventor： Taeil Jung ,  Il-Soo Kim ,  YongSeok Kwak

IPC: H01L33/38 ,  H01L25/16 ,  H01L33/14 ,  H01L33/32 ,  H01L33/44

CPC classification number: H01L33/387 ,  H01L25/167 ,  H01L33/382 ,  H01L33/385 ,  H01L33/44 ,  H01L33/14 ,  H01L33/32

Abstract: A light-emitting device and a display device using the same are disclosed. The light-emitting device improves the reliability of a process of disposing light-emitting devices. The light-emitting device is configured to ensure electrical connections even if the light-emitting device is inverted while being disposed on a substrate. The light-emitting device includes an n-type semiconductor layer and a p-type semiconductor layer. N-type electrodes and p-type electrodes are disposed on both sides of top and bottom surfaces of the light-emitting device. Contact holes are provided to electrically connect one of the n-type electrodes to the n-type semiconductor layer and one of the p-type electrodes to the p-type semiconductor layer. When the light-emitting device is inverted while being disposed on a substrate, the light-emitting device operates ordinarily, thereby reducing the defect rate of a display device.

公开(公告)号：US11621252B2

公开(公告)日：2023-04-04

申请号：US16591526

申请日：2019-10-02

Applicant: LG Display Co., Ltd.

Inventor： MinJae Kang ,  YongSeok Kwak ,  KyuOh Kwon ,  Junghun Choi

IPC: H01L25/075 ,  H01L25/065 ,  H01L25/16

Abstract: Provided is a display device. The display device includes a first substrate and a second substrate which are formed of different materials; a first LED disposed on the first substrate; and a second LED and a third LED disposed on the second substrate, in which the first LED, the second LED, and the third LED are disposed between the first substrate and the second substrate. Therefore, in consideration of the growth efficiency of the LEDs which emit different colored light, the first LED is disposed on the first substrate and the second LED and the third LED are disposed on the second substrate which is formed of a different material from the first substrate, thereby improving the growth efficiency of the plurality of LEDs.

公开(公告)号：US11094861B2

公开(公告)日：2021-08-17

申请号：US16550735

申请日：2019-08-26

Applicant: LG Display Co., Ltd.

Inventor： Kiyong Yang ,  MinJae Kang ,  YongSeok Kwak ,  Myungsoo Han ,  JaeMin Sim

IPC: H01L33/60 ,  H01L27/15 ,  H01L27/12 ,  H01L33/50

Abstract: Provided is a display device. The display device includes a substrate having a sub-pixel area. In some examples, the substrate may have or define a plurality of sub-pixel areas. A light-emitting diode (LED) and a thin-film transistor for driving the LED are disposed in the sub-pixel area. An extended light path layer is disposed on the substrate and is configured to surround the sub-pixel area. Accordingly, it is possible so as to improve the luminous efficiency of the display device.

公开(公告)号：US20200161282A1

公开(公告)日：2020-05-21

申请号：US16591526

申请日：2019-10-02

Applicant: LG Display Co., Ltd.

Inventor： MinJae Kang ,  YongSeok Kwak ,  KyuOh Kwon ,  Junghun Choi

IPC: H01L25/075 ,  H01L25/16 ,  H01L25/065

Abstract: Provided is a display device. The display device includes a first substrate and a second substrate which are formed of different materials; a first LED disposed on the first substrate; and a second LED and a third LED disposed on the second substrate, in which the first LED, the second LED, and the third LED are disposed between the first substrate and the second substrate. Therefore, in consideration of the growth efficiency of the LEDs which emit different colored light, the first LED is disposed on the first substrate and the second LED and the third LED are disposed on the second substrate which is formed of a different material from the first substrate, thereby improving the growth efficiency of the plurality of LEDs.