US 12,084,609 B2
Light emitting device
Byungchul Hong, Yokohama (JP); Naoki Sako, Yokohama (JP); Naoto Kijima, Yokohama (JP); Masahiko Yoshino, Yokohama (JP); Takashi Hase, Yokohama (JP); Fumiko Yoyasu, Yokohama (JP); and Kentarou Horibe, Ushiku (JP)
Assigned to CITIZEN ELECTRONICS CO., LTD., Fujiyoshida (JP); and NICHIA CORPORATION, Anan (JP)
Filed by CITIZEN ELECTRONICS CO., LTD., Fujiyoshida (JP); and NICHIA CORPORATION, Anan (JP)
Filed on Nov. 30, 2023, as Appl. No. 18/524,247.
Application 13/913,602 is a division of application No. 12/601,829, granted, now 8,491,816, issued on Jul. 23, 2013, previously published as PCT/JP2009/052099, filed on Feb. 6, 2009.
Application 18/524,247 is a continuation of application No. 18/112,666, filed on Feb. 22, 2023, granted, now 11,873,435.
Application 18/112,666 is a continuation of application No. 17/097,459, filed on Nov. 13, 2020, granted, now 11,613,698, issued on Mar. 28, 2023.
Application 17/097,459 is a continuation of application No. 15/970,598, filed on May 3, 2018, granted, now 10,858,582, issued on Dec. 8, 2020.
Application 15/970,598 is a continuation of application No. 15/357,507, filed on Nov. 21, 2016, granted, now 10,011,769, issued on Jul. 3, 2018.
Application 15/357,507 is a continuation of application No. 13/913,602, filed on Jun. 10, 2013, granted, now 9,541,238, issued on Jan. 10, 2017.
Claims priority of application No. 2008-027506 (JP), filed on Feb. 7, 2008; and application No. 2008-227990 (JP), filed on Sep. 5, 2008.
Prior Publication US 2024/0101899 A1, Mar. 28, 2024
Int. Cl. C09K 11/79 (2006.01); C09K 11/08 (2006.01); C09K 11/61 (2006.01); C09K 11/67 (2006.01); C09K 11/77 (2006.01); F21K 2/00 (2006.01); F21V 8/00 (2006.01); G02F 1/13357 (2006.01); H01L 33/50 (2010.01); H05B 33/14 (2006.01); F21V 3/06 (2018.01); F21Y 115/10 (2016.01); G02F 1/1335 (2006.01); G02F 1/1368 (2006.01); H01L 23/00 (2006.01)
CPC C09K 11/7739 (2013.01) [C09K 11/0883 (2013.01); C09K 11/616 (2013.01); C09K 11/675 (2013.01); C09K 11/7734 (2013.01); C09K 11/77342 (2021.01); C09K 11/77347 (2021.01); C09K 11/77348 (2021.01); F21K 2/00 (2013.01); G02B 6/0023 (2013.01); G02F 1/1336 (2013.01); H01L 33/502 (2013.01); H01L 33/504 (2013.01); H05B 33/14 (2013.01); F21V 3/062 (2018.02); F21Y 2115/10 (2016.08); G02B 6/0038 (2013.01); G02B 6/0043 (2013.01); G02B 6/0053 (2013.01); G02B 6/0073 (2013.01); G02F 1/133514 (2013.01); G02F 1/133528 (2013.01); G02F 1/133603 (2013.01); G02F 1/133609 (2013.01); G02F 1/133611 (2013.01); G02F 1/133614 (2021.01); G02F 1/133615 (2013.01); G02F 1/133624 (2021.01); G02F 1/1368 (2013.01); H01L 24/45 (2013.01); H01L 2224/45015 (2013.01); H01L 2224/45124 (2013.01); H01L 2224/45144 (2013.01); H01L 2224/48091 (2013.01); H01L 2224/48247 (2013.01); H01L 2924/12041 (2013.01); H01L 2924/12042 (2013.01); H01L 2924/12044 (2013.01); H01L 2924/181 (2013.01); H01L 2924/3025 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A light emitting device comprising:
a solid light emitting device that emits light in blue or deep blue region or ultraviolet region;
a first phosphor and a second phosphor; wherein
the first phosphor has a chemical composition of formula
MI′2MIV′F6:Mn
where MI′ is at least one element selected from the group consisting of K and Na, and MIV′ is at least one metal element selected from the group consisting of Group 4 and Group 14 of the Periodic Table comprising at least Si,
the second phosphor is β-SiAlON.