Patents by Inventor Pee Khaim So

Pee Khaim So has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Light-emitting diodes in displays with direct-lit backlight units
    Patent number: 10613389
    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 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.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: April 7, 2020
    Assignee: Apple Inc.
    Inventors: Rong Liu, Edward H Kang, Jun Qi, Mookyung Son, Pee Khaim So, Victor H. Yin, Wei Lv, Wenyong Zhu, Zhenyue Luo, Xinyu Zhu, Ling Han, Hung Sheng Lin
  • Light-Emitting Diodes in Displays with Direct-lit Backlight Units
    Publication number: 20190285942
    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 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.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 19, 2019
    Inventors: Rong Liu, Edward H Kang, Jun Qi, Mookyung Son, Pee Khaim So, Victor H. Yin, Wei Lv, Wenyong Zhu, Zhenyue Luo, Xinyu Zhu, Ling Han, Hung Sheng Lin