公开(公告)号：US20240274758A1

公开(公告)日：2024-08-15

申请号：US18421942

申请日：2024-01-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Shenglin YE ,  Xinyu ZHU ,  Xiangtong LI ,  Ruiqing MA ,  Yu-Jen WANG ,  Yun-Han LEE ,  Linghui RAO ,  Sascha HALLSTEIN

IPC: H01L33/50 ,  G02F1/13357 ,  G06F3/01 ,  H01L25/075 ,  H01L25/16 ,  H01L33/62

CPC classification number: H01L33/502 ,  H01L25/0753 ,  H01L25/167 ,  H01L33/62 ,  G02F1/133603 ,  G06F3/011

Abstract: A light-emitting diode (“LED”) package includes a package housing defining a space. The LED package includes a first LED disposed with the space defined by the package housing, and configured to emit a first light having a blue wavelength range. The blue wavelength range has a peak wavelength ranging from about 440 nm to about 480 nm. The LED package includes a second LED disposed within the space, and configured to emit a second light having a red wavelength range. The red wavelength range has a peak wavelength ranging from about 610 nm to about 680 nm. The LED package includes a phosphor filler filling the space and configured to absorb a portion of the first light to emit a third light having a green wavelength range. The green wavelength range has a peak wavelength ranging from about 510 nm to about 570 nm.

公开(公告)号：US20240310677A1

公开(公告)日：2024-09-19

申请号：US18590840

申请日：2024-02-28

Applicant: Meta Platforms Technologies, LLC

Inventor： Shenglin YE ,  Xinyu ZHU ,  Rungrot KITSOMBOONLOHA ,  Cheonhong KIM ,  Sascha HALLSTEIN ,  Wook Jin HAN ,  Ruiqing MA ,  Xiangtong LI ,  Yu-Jen WANG

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133614 ,  G02B6/0053 ,  G02B6/0073 ,  G02F1/133528 ,  G02F1/133621

Abstract: A liquid crystal display panel for near-eye display comprises a liquid crystal (LC) panel and a backlight unit (BLU). The BLU includes an array of blue light-emitting diodes (LEDs); a light guide plate configured to guide the blue light from the array of blue LEDs through total internal reflection, and couple portions of the blue light guided by the light guide plate out of the light guide plate; a quantum dot film including quantum dots configured to absorb blue light and emit red and green light; a brightness enhancement film configured to transmit incident light within an angular range and reflect incident light outside of the angular range; and an optical efficiency enhancement film configured to modify an angular beam profile of light from the quantum dot film such that the light transmitted by the brightness enhancement film has a peak intensity in a direction perpendicular to the LC panel.