Apple Inc.

Pee Khiam So

Victor H Yin

Jun Qi

Rong Liu

Wenyong Zhu

Mookyung Son

Daming Xu

Wei Lv

Ziruo Hong

Suraj P Gorkhali

Hung Sheng Lin

Zhenbin Ge

Yu P Sun

Chenhua You

Xinyu Zhu

Joshua A Spechler

Zhenyue Luo

Juan He

Ling Han

Heesang Suh

Janos C Keresztes

Thomas O Henry

Yufeng Yan

Wei He

Edward H Kang

Shaofeng Liu

Ryan A Zimmerman

Po Hsun Chen

Fei Yan

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.

Displays with direct-lit backlight units

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 backlight unit. The backlight unit may include a printed circuit board, a plurality of light-emitting diodes mounted on the printed circuit board, at least one light spreading layer formed over the printed circuit board that spreads light received from the plurality of light-emitting diodes, a partially reflective layer formed over the at least one light spreading layer, a color conversion layer formed over the partially reflective layer, a collimating layer formed over the color conversion layer, a brightness enhancement film formed over the collimating layer, and a diffuser formed over the brightness enhancement film. The at least one light spreading layer may include two light spreading layers with elongated protrusions that are rotated relative to each other.

Growing community of inventors

San Jose, CA, United States of America

Pee Khiam So