Patent · US Active

Light emitting structure to aid LED light extraction

US10685940B2 · kind B2 · utility

6Cited by

2References

20Claims

0Family size

Inventors

Jonathan S. Steckel · Saratoga, US
Jean-Jacques P. Drolet · Pasadena, US
Roland van Gelder · Hartsdale, US
Kelly McGroddy · San Francisco, US
Ion Bita · San Jose, US
James Michael Perkins · Mountain View, US
Andreas Bibl · Los Altos, US
Sajjad A. Khan · Santa Clara, US
James E. Pedder · Shrewsbury, GB
Elmar Gehlen · Cupertino, US

Key dates

Filing date	Apr 4, 2019
Grant date	Jun 16, 2020
Priority date	—
Expiry date	Apr 4, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/84
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Display panels and methods of manufacture are described for down converting a peak emission wavelength of a pump LED within a subpixel with a quantum dot layer. In some embodiments, pump LEDs with a peak emission wavelength below 500 nm, such as between 340 nm and 420 nm are used. QD layers in accordance with embodiments can be integrated into a variety of display panel structures including a wavelength conversion cover arrangement, QD patch arrangement, or QD layers patterned on the display substrate.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.