US 11,923,483 B2
Method for producing LED by one step film lamination
Anna Ya Ching Feng, Zhubei (TW); and Lu Zhou, Pudong District (CN)
Assigned to DDP SPECIALTY ELECTRONIC MATERIALS US, LLC, Wilmington, DE (US); and ROHM AND HAAS ELECTRONC MATERIALS LLC, Wilmington, DE (US)
Appl. No. 17/055,340
Filed by Rohm and Haas Electronic Materials LLC, Marlborough, MA (US); and DDP Specialty Electronic Materials US 9, LLC, Wilmington, DE (US)
PCT Filed May 18, 2018, PCT No. PCT/CN2018/087460
§ 371(c)(1), (2) Date Nov. 13, 2020,
PCT Pub. No. WO2019/218336, PCT Pub. Date Nov. 21, 2019.
Prior Publication US 2021/0226100 A1, Jul. 22, 2021
Int. Cl. H01L 33/50 (2010.01)
CPC H01L 33/504 (2013.01) [H01L 2933/0041 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for producing LEDs having two or more colors, comprising: curing two or more separate colored phosphor films laminated to each other and to each of two or more LEDs by one heating step;
wherein each of the colored phosphor film comprises each other different colored phosphor composition which has a Maximum tan δ; and
the difference of each Maximum tan δ varies within a range of 0-30% and
wherein the colored phosphor composition comprises a silicone binder.