公开(公告)号：US20240251644A1

公开(公告)日：2024-07-25

申请号：US18510170

申请日：2023-11-15

Applicant: LG Display Co., Ltd.

Inventor： SeHong PARK ,  Wonrae KIM ,  Inae CHOI ,  Sejong SEONG ,  SeoHyun NAM

IPC: H10K59/80 ,  H10K59/122 ,  H10K59/35

CPC classification number: H10K59/879 ,  H10K59/122 ,  H10K59/351 ,  H10K59/80518 ,  H10K59/878

Abstract: A display apparatus is provided, which may improve light extraction efficiency of light emitted from a light emitting element layer. The display apparatus comprises a substrate having a plurality of pixels having a plurality of subpixels, a pattern portion disposed on the substrate and formed to be concave between the plurality of subpixels, and a reflective portion on the pattern portion, wherein the plurality of subpixels include an overcoat layer having a first layer on the substrate and a light extraction portion adjacent to the reflective portion, having a plurality of concave portions formed on the first layer, an optimal radius RBEST of the concave portion satisfies RBEST=0.15 sin 4π(AR+0.05)+1.5noc+0.5m−0.59, wherein ‘π’ is a circumferential rate, AR is an aspect ratio of the concave portion, ‘noc’ is a refractive index of the first layer, and ‘m’ is a variable value according to a process of forming the plurality of concave portions.

公开(公告)号：US20240224753A1

公开(公告)日：2024-07-04

申请号：US18469970

申请日：2023-09-19

Applicant: LG Display Co., Ltd.

Inventor： Sejong SEONG ,  SeHong PARK ,  Wonrae KIM ,  Hyemin PARK ,  SeoHyun NAM

IPC: H10K59/80 ,  H10K59/131 ,  H10K59/35

CPC classification number: H10K59/879 ,  H10K59/131 ,  H10K59/351

Abstract: A display apparatus is provided, which may improve light extraction efficiency of light emitted from a light emitting element layer. The display apparatus comprises a substrate having a plurality of pixels, each of the plurality of pixels having a plurality of subpixels, a pattern portion disposed on the substrate, a reflective portion on the pattern portion, and a plurality of lines provided below the pattern portion, for driving the plurality of subpixels, wherein the plurality of subpixels include a light emission area and a non-light emission area adjacent to the light emission area, the non-light emission area includes a first area adjacent to the light emission area and a second area adjacent to the first area, and the first area is between the second area and the light emission area, and at least one of the plurality of lines is disposed to at least partially overlap the second area.

公开(公告)号：US20240224742A1

公开(公告)日：2024-07-04

申请号：US18474766

申请日：2023-09-26

Applicant: LG Display Co., Ltd.

Inventor： SeoHyun NAM ,  SeHong PARK ,  Wonrae KIM ,  Inae CHOI ,  Sejong SEONG

IPC: H10K59/80 ,  H10K59/122

CPC classification number: H10K59/878 ,  H10K59/122

Abstract: A display apparatus is provided, which may improve light extraction efficiency of light emitted from a light emitting element layer. The display apparatus comprises a substrate having a plurality of pixels having a plurality of subpixels, a pattern portion disposed on the substrate and formed to be concave between the plurality of subpixels, and a reflective portion on the pattern portion, wherein the plurality of subpixels include a light emission area and a non-light emission area adjacent to the light emission area, and a light extraction portion that overlaps the light emission area and includes a plurality of concave portions, and the reflective portion is adjacent to the light extraction portion in the non-light emission area and is disposed to be spaced apart from the light emission area.

公开(公告)号：US20240215406A1

公开(公告)日：2024-06-27

申请号：US18462045

申请日：2023-09-06

Applicant: LG Display Co., Ltd.

Inventor： Sejong SEONG ,  SeHong PARK ,  Wonrae KIM ,  Inae CHOI ,  SeoHyun NAM

IPC: H10K59/80 ,  H10K59/122 ,  H10K59/124

CPC classification number: H10K59/878 ,  H10K59/122 ,  H10K59/124

Abstract: A display apparatus is provided, which may improve light extraction efficiency of light emitted from a light emitting element layer. The display apparatus comprises a substrate having a plurality of pixels having a plurality of subpixels, a pattern portion disposed on the substrate and formed to be concave between the plurality of subpixels, and a reflective portion on the pattern portion, wherein the plurality of subpixels include a light emission area and a non-light emission area adjacent to the light emission area, and the pattern portion is disposed in the periphery of the non-light emission area.

公开(公告)号：US20250151527A1

公开(公告)日：2025-05-08

申请号：US18915904

申请日：2024-10-15

Applicant: LG Display Co., Ltd.

Inventor： SeHong PARK ,  SeoHyun NAM ,  InGoo LEE ,  YoungNam LIM ,  Hyeonhye YU

IPC: H10K59/122 ,  H10K59/38 ,  H10K59/80

Abstract: A display device may include: a substrate; a plurality of subpixels each of which includes an emitting area and a non-emitting area; an overcoat layer disposed over the substrate, and having a concave part located between the emitting areas; a first electrode layer disposed on a periphery of the concave part; a metal pattern layer disposed to cover a sloped portion of the concave part; and a bank layer covering the concave part, and disposed on the metal pattern layer. It is possible to improve light extraction efficiency.

公开(公告)号：US20240260420A1

公开(公告)日：2024-08-01

申请号：US18517823

申请日：2023-11-22

Applicant: LG Display Co., Ltd.

Inventor： Inae CHOI ,  SeHong PARK ,  Wonrae KIM ,  Sejong SEONG ,  SeoHyun NAM

IPC: H10K59/80 ,  H10K59/122 ,  H10K59/124

CPC classification number: H10K59/878 ,  H10K59/122 ,  H10K59/124 ,  H10K59/879

Abstract: A display apparatus can include a plurality of subpixels disposed on a substrate; a pattern portion disposed on the substrate, the pattern portion forming a concave area between at least two subpixels among the plurality of subpixels; and a reflective pattern partially overlapping with a portion of the pattern portion. Also, the plurality of subpixels include a light emission area and a non-light emission area adjacent to the light emission area, the reflective pattern being disposed in the non-light emission area, and the non-light emission area includes a first void located between the light emission area and the reflective pattern.

公开(公告)号：US20240251623A1

公开(公告)日：2024-07-25

申请号：US18521814

申请日：2023-11-28

Applicant: LG Display Co., Ltd.

Inventor： SeoHyun NAM ,  SeHong PARK ,  Wonrae KIM ,  Inae CHOI ,  Sejong SEONG

IPC: H10K59/35 ,  H10K50/15 ,  H10K50/16 ,  H10K59/122 ,  H10K59/80

CPC classification number: H10K59/351 ,  H10K50/15 ,  H10K50/16 ,  H10K59/122 ,  H10K59/873

Abstract: Discussed is a display apparatus including at least one pixel on a substrate and having a plurality of subpixels, a pattern portion disposed on the substrate and formed to be concave between the plurality of subpixels, and a reflective portion on the pattern portion. The plurality of subpixels include a first layer having a plurality of concave portions adjacent to the reflective portion and an organic light emitting layer having a lower organic layer on the first layer and a light emitting layer on the lower organic layer, and light efficiency of light emitted from the light emitting layer and output to the substrate through a concave portion of the plurality of concave portions is proportional to a thickness change value of the lower organic layer.

公开(公告)号：US20240224757A1

公开(公告)日：2024-07-04

申请号：US18530688

申请日：2023-12-06

Applicant: LG Display Co., Ltd.

Inventor： SeoHyun NAM ,  SeHong PARK ,  Wonrae KIM ,  Hyemin PARK ,  Sejong SEONG

IPC: H10K59/80 ,  H10K59/122 ,  H10K59/35

CPC classification number: H10K59/879 ,  H10K59/122 ,  H10K59/351 ,  H10K59/873 ,  H10K59/878 ,  H10K59/38

Abstract: A display apparatus may include a substrate, subpixels, a concave pattern portion, and a reflective portion on the pattern portion. Subpixels include a light emission area including a light emitting layer and a bank in a non-light emission area. A total amount of light emitted from the light emitting layer and output to the substrate satisfies





η


total


=


A
⁢


∫
0


sin

-
1


(


n
b



n
OLED

·


1
+


(

h
v

)

2





)





I
OLED

(

θ

)

⁢
d
⁢
θ



+

B
.






A is a light conversion constant, nOLED is a refractive index of the light emitting layer, nb is a refractive index of the bank, V is a vertical length from an upper surface of the light emitting layer to an ending point of the bank, h is a horizontal length from an end of the light emission area to the ending point of the bank, IOLED(θ) is the amount of light emitted from the inside of the light emitting layer, and B is a total output amount of light without a reflective portion.

公开(公告)号：US20240215404A1

公开(公告)日：2024-06-27

申请号：US18371863

申请日：2023-09-22

Applicant: LG Display Co., Ltd.

Inventor： Sejong SEONG ,  SeHong PARK ,  Wonrae KIM ,  Inae CHOI ,  SeoHyun NAM

IPC: H10K59/80 ,  H10K59/122 ,  H10K59/131 ,  H10K59/35 ,  H10K59/38

CPC classification number: H10K59/878 ,  H10K59/122 ,  H10K59/131 ,  H10K59/351 ,  H10K59/38

Abstract: A display apparatus is provided, which can improve light extraction efficiency of light emitted from a light emitting element layer. In one example, the display apparatus includes a substrate having a plurality of pixels with a plurality of subpixels, a pattern portion disposed on the substrate and formed to be concave between the plurality of subpixels, a reflective portion on the pattern portion, and a plurality of lines for driving the plurality of subpixels. The plurality of subpixels include a light emission area and a non-light emission area adjacent to the light emission area, and the plurality of lines are disposed in the non-light emission area. Further, the pattern portion is provided to surround the light emission area, and at least one of the plurality of lines partially overlaps the pattern portion.