RED PHOSPHOR, WHITE LIGHT EMITTING DIODE, AND BACKLIGHT MODULE
A red phosphor comprising a first red phosphor and a second red phosphor having adjustable wavelength. The first red phosphor is made from a substance having structure formula M2AX6:Mn4+, wherein the element M is selected from Li, Na, K, Rb or Cs, the element A is selected from Ti, Si, Ge or Zr, and...
Saved in:
Main Authors | , , , , , |
---|---|
Format | Patent |
Language | English |
Published |
08.10.2020
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A red phosphor comprising a first red phosphor and a second red phosphor having adjustable wavelength. The first red phosphor is made from a substance having structure formula M2AX6:Mn4+, wherein the element M is selected from Li, Na, K, Rb or Cs, the element A is selected from Ti, Si, Ge or Zr, and the element X is selected from F, Cl or Br; the ratio of the second red phosphor to the red phosphor ranges from 0.01% to 15%. Further provided is a white LED and a backlight module. The adjustably colored points of a device including M2AX6:Mn4+ are achieved by adding a second red phosphor having various wavelength to the red phosphor including M2AX6:Mn4+ whose emission wavelength and spectral shape cannot be adjusted. The device can enable full range of colored points with hardly any reduction of the NTSC color gamut. |
---|---|
Bibliography: | Application Number: US202016884098 |