公开(公告)号：US20240260416A1

公开(公告)日：2024-08-01

申请号：US18488312

申请日：2023-10-17

Applicant: LG Display Co., Ltd.

Inventor： Hyeon-Hye YU ,  In-Goo LEE ,  Won-Sik LEE

IPC: H10K59/80 ,  H10K59/122

CPC classification number: H10K59/878 ,  H10K59/122

Abstract: In one aspect, a light emitting display device includes a plurality of subpixels on a substrate, each of the plurality of subpixels having a corresponding emission region, each of the plurality of subpixels having an outer interface with an n-gonal shape; a light emitting diode at each corresponding emission region and including an emission layer; and a plurality of arc-shaped light reflectors inside the light emitting diode and having a lower refractive index than a refractive index of the emission layer. The plurality of arc-shaped light reflectors are in a quasi-caustic region of the outer interface.

公开(公告)号：US20240224744A1

公开(公告)日：2024-07-04

申请号：US18503988

申请日：2023-11-07

Applicant: LG Display Co., Ltd.

Inventor： In-Goo LEE ,  Hyeon-Hye YU

IPC: H10K59/80 ,  H10K59/122

CPC classification number: H10K59/878 ,  H10K59/122 ,  H10K59/35

Abstract: A light emitting display device includes a bank that is on a substrate and includes an opening corresponding to each of a plurality of pixel regions of a display region. The display device includes an inclined reflective portion that is below the bank and disposed in each of the plurality of pixel regions. The display device includes a light emitting diode disposed in the opening. Each of the plurality of pixel regions is configured such that the corresponding opening and reflective portion have a cardioid-shaped structure with a cusp. The plurality of pixel regions include a pixel region in which the cardioid-shaped structure is located in a first azimuth, and a pixel region in which the cardioid-shaped structure is located in a second azimuth opposite to the first azimuth.

公开(公告)号：US20240260417A1

公开(公告)日：2024-08-01

申请号：US18488441

申请日：2023-10-17

Applicant: LG Display Co., Ltd.

Inventor： Hyeon-Hye YU ,  In-Goo LEE

IPC: H10K59/80 ,  H10K59/122 ,  H10K59/123 ,  H10K59/35

CPC classification number: H10K59/878 ,  H10K59/122 ,  H10K59/123 ,  H10K59/35 ,  H10K2102/3026

Abstract: A light emitting display device includes: a bank on a substrate and including an opening which corresponds to an emission region of a pixel region; an inclined reflective portion below the bank and disposed in the pixel region; a light emitting diode at the emission region and including an emission layer and first and second electrodes which are disposed below and on the emission layer, respectively; and a plurality of light reflectors inside the light emitting diode and having a lower refractive index than that of the emission layer, wherein a first interface between the emission layer and the bank is circular or elliptical, and the light reflector forming a second interface with the emission layer is linear, and wherein at least a portion of the light reflector is disposed in a caustic region which is a total reflection optical path region made by total reflection along the first interface.

公开(公告)号：US20240224748A1

公开(公告)日：2024-07-04

申请号：US18542315

申请日：2023-12-15

Applicant: LG Display Co., Ltd.

Inventor： In-Goo LEE ,  Hyeon-Hye YU ,  Won-Sik LEE

IPC: H10K59/80 ,  H10K59/122

CPC classification number: H10K59/878 ,  H10K59/122

Abstract: A light emitting display device includes an inclined reflective portion that is below a bank and disposed in each of a plurality of pixel regions. The device includes a light emitting diode disposed in an opening. Each of the plurality of pixel regions is configured such that the corresponding opening and reflective portion have a cardioid-shaped structure with a cusp. A display region includes a first region of a first PPI and a second region of a second PPI smaller than the first PPI. The pixel region disposed in the first region has a first type cardioid-shaped structure, and the pixel region disposed in the second region has a second type cardioid-shaped structure. The first type cardioid-shaped structure has a smaller rate of change in curvature than the second type cardioid-shaped structure.