公开(公告)号：US11233185B2

公开(公告)日：2022-01-25

申请号：US16600330

申请日：2019-10-11

Applicant: LG Display Co., Ltd.

Inventor： KyuOh Kwon ,  JaeMin Sim ,  SeungJun Lee ,  Junghun Choi

IPC: H01L33/62 ,  H01L27/12 ,  G09G3/32 ,  H01L33/50 ,  H01L33/58

Abstract: A display device comprises a substrate having a plurality of sub-pixels; a plurality of LEDs respectively disposed in the plurality of sub-pixels, wherein each of the LEDs comprises an emissive layer, a first semiconductor layer between the substrate and the emissive layer and a second semiconductor layer on the emissive layer; a plurality of driving units disposed under the substrate in each of the sub-pixels; and a plurality of connection units penetrating the substrate and electrically connecting at least one of the first semiconductor layer and the second semiconductor layer with the plurality of driving units.

公开(公告)号：US12183770B2

公开(公告)日：2024-12-31

申请号：US17377155

申请日：2021-07-15

Applicant: LG Display Co., Ltd.

Inventor： KyuOh Kwon ,  SeungHo Jang ,  Jaeyong Choi ,  JaeMin Sim ,  SeungJun Lee

IPC: H01L33/62 ,  H01L27/15 ,  H01L33/00 ,  H01L33/12 ,  H01L33/38

Abstract: A display device according to an example of the present disclosure includes a substrate on which a plurality of sub-pixels are defined; a plurality of LEDs including a first LED, a second LED, and a third LED that are disposed in the plurality of respective sub-pixels on the substrate; and at least one buffer layer disposed between the first LED and the substrate, wherein the first LED is in contact with an upper surface of the at least one buffer layer, and the second LED and the third LED are in contact with an upper surface of the substrate. Accordingly, the plurality of LEDs emitting light of different colors using the buffer layer can be respectively formed on one substrate, thereby allow for omission of a transfer process.

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：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：US11183618B2

公开(公告)日：2021-11-23

申请号：US16725229

申请日：2019-12-23

Applicant: LG Display Co., Ltd.

Inventor： Junghun Choi ,  SeungJun Lee ,  MinJoo Kim ,  KyuOh Kwon

IPC: H01L33/50 ,  H01L25/075 ,  H01L33/60

Abstract: A light emission element includes a first semiconductor layer, a light emission layer, and a second semiconductor layer. The first semiconductor layer in the light emission portion is provided with a concave portion having a concave shape. The light emission layer and the second semiconductor layer disposed on the first semiconductor layer are also disposed along the concave shape of the concave portion. The light emitting layer disposed along the shape of the concave portion emits light by electrons and holes injected from the first semiconductor layer and the second semiconductor layer. Further, the light path of the light emitted according to the concave shape is adjusted. Therefore, a light emission element having improved light efficiency and a display device using the same can be provided.

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.

公开(公告)号：US10454004B2

公开(公告)日：2019-10-22

申请号：US15847276

申请日：2017-12-19

Applicant: LG Display Co., Ltd.

Inventor： KyuOh Kwon ,  Junghun Choi

IPC: F21V7/04 ,  H01L33/54 ,  F21V8/00 ,  G02F1/1335 ,  H01L33/20 ,  H01L33/50 ,  H01L33/64 ,  H01L25/075

Abstract: A light source module having high efficiency and high heat dissipation characteristics and a backlight unit and a liquid crystal display device including the same are disclosed. The light source module comprises light sources packaged in a printed circuit board, and an encapsulation film surrounding the light sources, wherein the light sources have a triangular prism shape.