公开(公告)号：US20240260298A1

公开(公告)日：2024-08-01

申请号：US18235577

申请日：2023-08-18

Applicant: LG Display Co., Ltd.

Inventor： Sun-Hee LEE ,  Hong-Seok CHOI ,  Sung-Min JO

IPC: H10K50/13 ,  H10K50/805 ,  H10K85/60

CPC classification number: H10K50/13 ,  H10K50/805 ,  H10K85/6574

Abstract: The present disclosure relates to an organic light emitting diode (OLED) where an emissive layer comprises four emitting parts each of which is sequentially disposed between a first electrode and a second electrode; and charge generation layers each of which is disposed between emitting parts, where one emitting part comprises a red emitting material layer and a blue emitting material layer comprising a blue emitter and a host having a high HOMO and/or a LUMO energy levels. The OLED may implement efficient white emission by improving the blue emission intensity and/or blue temperature.

公开(公告)号：US20240260296A1

公开(公告)日：2024-08-01

申请号：US18533912

申请日：2023-12-08

Applicant: LG Display Co., Ltd.

Inventor： Hong-Seok CHOI ,  Byung-Gun AHN ,  Myeong-Seon CHO

IPC: H10K50/125 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/813

CPC classification number: H10K50/125 ,  H10K50/15 ,  H10K50/16 ,  H10K50/171 ,  H10K50/813 ,  H10K2102/351

Abstract: Discussed is an organic light emitting device including a substrate. The substrate can include red, green and blue pixel regions, and an organic light emitting diode including an anode, a cathode over the anode and an organic emitting layer between the anode and the cathode and corresponding to the red, green and blue pixel regions. The organic emitting layer includes a first emitting part including a red emitting material layer, a second emitting part including a green emitting material layer and positioned between the first emitting part and the cathode and a third emitting part including a blue emitting material layer and positioned between the second emitting part and the cathode. The anode in the blue pixel region has a first thickness, and the anode in the green pixel region has a second thickness being approximately ⅖ to ⅔ of the first thickness.

公开(公告)号：US20240215288A1

公开(公告)日：2024-06-27

申请号：US18229358

申请日：2023-08-02

Applicant: LG Display Co., Ltd.

Inventor： Sung-Min JO ,  Hong-Seok CHOI ,  Sun-Hee LEE

IPC: H10K50/125 ,  H10K50/814 ,  H10K50/82 ,  H10K77/10 ,  H10K85/60

CPC classification number: H10K50/125 ,  H10K50/814 ,  H10K50/82 ,  H10K77/10 ,  H10K85/622 ,  H10K85/653 ,  H10K2102/101

Abstract: An organic light emitting diode (OLED) is described, where a red emitting material layer, a first blue emitting material layer and a second blue emitting material layer are disposed sequentially between two electrodes. A first blue host in the first blue emitting material layer has a hole mobility faster than a hole mobility of a second blue host in the second blue emitting material layer. Holes and electrons are injected into an emitting material layer in balance so that an exciton recombination zone is formed within the emitting material layer. Red and blue emission efficiencies are controlled in balance so that an OLED with beneficial blue emission efficiency and high red emission lifetime can be realized. An organic light emitting device includes the organic light emitting diode, and can be a display device or a lighting device.

公开(公告)号：US20210199972A1

公开(公告)日：2021-07-01

申请号：US17127390

申请日：2020-12-18

Applicant: LG Display Co., Ltd.

Inventor： Seung-Ryong JOUNG ,  Sang-Hun HAN ,  Ahn-Ki KIM ,  Hong-Seok CHOI ,  Yoon-Deok HAN ,  Gyeong-Woo KIM ,  Jun-Ho LEE ,  Hee-Su BYEON

IPC: G02B27/01 ,  H01L27/32 ,  H01L51/00 ,  H01L51/52

Abstract: Disclosed are a display panel which changes the inner structure of an organic light emitting stack and a color transmission structure so as to improve luminance, and a head mounted display device using the same.