公开(公告)号：US11333924B1

公开(公告)日：2022-05-17

申请号：US17409473

申请日：2021-08-23

Applicant: Apple Inc.

Inventor： Wei Lv ,  Pee Khiam So ,  Wenyong Zhu ,  Daming Xu ,  Victor H. Yin ,  Mookyung Son ,  Ryan A. Zimmerman ,  Ziruo Hong ,  Rong Liu ,  Jun Qi ,  Po Hsun Chen ,  Zhenbin Ge ,  Fei Yan ,  Wei He

IPC: G02F1/13357 ,  G02F1/1335

Abstract: A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.