US 11,686,436 B2
LED filament and light bulb using LED filament
Aiming Xiong, Jiaxing (CN); Lin Zhou, Jiaxing (CN); Mingbin Wang, Jiaxing (CN); Chenkun Chen, Hsinchu (TW); Chihshan Yu, Changhua (TW); Tao Jiang, Jiaxing (CN); Yuexing Li, Jiaxing (CN); Hayato Unagiike, Kai (JP); Yukihiro Saito, Kawasaki (JP); and Zhichao Zhang, Jiaxing (CN)
Assigned to ZHEJIANG SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD
Filed by ZHEJIANG SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD, Jinyun (CN)
Filed on Aug. 23, 2021, as Appl. No. 17/408,519.
Application 17/408,519 is a continuation in part of application No. 16/894,913, filed on Jun. 8, 2020.
Application 16/894,913 is a continuation in part of application No. 16/748,070, filed on Jan. 21, 2020, granted, now 10,784,428, issued on Sep. 22, 2020.
Application 16/748,070 is a continuation in part of application No. 16/234,124, filed on Dec. 27, 2018, granted, now 10,845,008, issued on Nov. 24, 2020.
Application 16/234,124 is a continuation in part of application No. 15/858,036, filed on Dec. 29, 2017, granted, now 10,544,905, issued on Jan. 28, 2020.
Application 15/858,036 is a continuation in part of application No. 29/627,379, filed on Nov. 27, 2017, granted, now D879330, issued on Mar. 24, 2020.
Application 29/627,379 is a continuation in part of application No. 15/723,297, filed on Oct. 3, 2017, granted, now 10,655,792, issued on May 19, 2020.
Application 15/723,297 is a continuation in part of application No. 29/619,287, filed on Sep. 28, 2017, granted, now D862740, issued on Oct. 8, 2019.
Application 15/723,297 is a continuation in part of application No. 15/499,143, filed on Apr. 27, 2017, granted, now 10,240,724, issued on Mar. 26, 2019.
Application 15/499,143 is a continuation in part of application No. 15/384,311, filed on Dec. 19, 2016, granted, now 10,487,987, issued on Nov. 26, 2019.
Application 15/384,311 is a continuation in part of application No. 15/366,535, filed on Dec. 1, 2016, granted, now 10,473,271, issued on Nov. 12, 2019.
Application 15/723,297 is a continuation in part of application No. 15/308,995, filed on Nov. 4, 2016, granted, now 10,781,979, issued on Sep. 22, 2020.
Application 15/366,535 is a continuation in part of application No. 15/237,983, filed on Aug. 16, 2016, granted, now 10,228,093, issued on Mar. 12, 2019.
Application 15/723,297 is a continuation in part of application No. 15/168,541, granted, now 9,995,474, issued on Jun. 12, 2018, previously published as PCT/CN2015/090815, filed on Sep. 25, 2015.
Claims priority of application No. 201410510593.6 (CN), filed on Sep. 28, 2014; application No. 201510053077.X (CN), filed on Feb. 2, 2015; application No. 201510316656.9 (CN), filed on Jun. 10, 2015; application No. 201510347410.8 (CN), filed on Jun. 19, 2015; application No. 201510489363.0 (CN), filed on Aug. 7, 2015; application No. 201510502630.3 (CN), filed on Aug. 17, 2015; application No. 201510555889.4 (CN), filed on Sep. 2, 2015; application No. 201510966906.3 (CN), filed on Dec. 19, 2015; application No. 201610041667.5 (CN), filed on Jan. 22, 2016; application No. 201610272153.0 (CN), filed on Apr. 27, 2016; application No. 201610281600.9 (CN), filed on Apr. 29, 2016; application No. 201610394610.3 (CN), filed on Jun. 3, 2016; application No. 201610544049.2 (CN), filed on Jul. 7, 2016; application No. 201610586388.7 (CN), filed on Jul. 22, 2016; application No. 201610936171.4 (CN), filed on Nov. 1, 2016; application No. 201611108722.4 (CN), filed on Dec. 6, 2016; application No. 201710024877.8 (CN), filed on Jan. 13, 2017; application No. 201710079423.0 (CN), filed on Feb. 14, 2017; application No. 201710138009.2 (CN), filed on Mar. 9, 2017; application No. 201710180574.5 (CN), filed on Mar. 23, 2017; application No. 201710234618.8 (CN), filed on Apr. 11, 2017; application No. 201710316641.1 (CN), filed on May 8, 2017; application No. 201710839083.7 (CN), filed on Sep. 18, 2017; application No. 201730450712.8 (CN), filed on Sep. 21, 2017; application No. 201730453237.X (CN), filed on Sep. 22, 2017; application No. 201710883625.0 (CN), filed on Sep. 26, 2017; application No. 201730489929.X (CN), filed on Oct. 16, 2017; application No. 201730517887.6 (CN), filed on Oct. 27, 2017; application No. 201730520672.X (CN), filed on Oct. 30, 2017; application No. 201730537542.7 (CN), filed on Nov. 3, 2017; application No. 201730537544.6 (CN), filed on Nov. 3, 2017; application No. 201711434993.3 (CN), filed on Dec. 26, 2017; application No. 201711477767.3 (CN), filed on Dec. 29, 2017; application No. 201810031786.1 (CN), filed on Jan. 12, 2018; application No. 201810065369.9 (CN), filed on Jan. 23, 2018; application No. 201810343825.1 (CN), filed on Apr. 17, 2018; application No. 201810344630.9 (CN), filed on Apr. 17, 2018; application No. 201810498980.0 (CN), filed on May 23, 2018; application No. 201810501350.4 (CN), filed on May 23, 2018; application No. 201810573314.9 (CN), filed on Jun. 6, 2018; application No. 201810836433.9 (CN), filed on Jul. 26, 2018; application No. 201810943054.X (CN), filed on Aug. 17, 2018; application No. 201811005145.5 (CN), filed on Aug. 30, 2018; application No. 201811005536.7 (CN), filed on Aug. 30, 2018; application No. 201811079889.1 (CN), filed on Sep. 17, 2018; application No. 201811277980.4 (CN), filed on Oct. 30, 2018; application No. 201811285657.1 (CN), filed on Oct. 31, 2018; application No. 201811378173.1 (CN), filed on Nov. 19, 2018; application No. 201811378189.2 (CN), filed on Nov. 19, 2018; application No. 201811549205.X (CN), filed on Dec. 18, 2018; application No. 201910060475.2 (CN), filed on Jan. 22, 2019; application No. 201910497661.2 (CN), filed on Jun. 10, 2019; application No. 201911057715.X (CN), filed on Nov. 1, 2019; application No. 201911234236.0 (CN), filed on Dec. 5, 2019; application No. 202010856691.0 (CN), filed on Aug. 24, 2020; application No. 202010904065.4 (CN), filed on Sep. 1, 2020; application No. 202010912636.9 (CN), filed on Sep. 3, 2020; application No. 202011313059.8 (CN), filed on Nov. 20, 2020; application No. 202110108853.7 (CN), filed on Jan. 27, 2021; and application No. 202110779145.6 (CN), filed on Jul. 9, 2021.
Prior Publication US 2021/0381657 A1, Dec. 9, 2021
Int. Cl. F21K 9/232 (2016.01); F21K 9/238 (2016.01); H01L 25/075 (2006.01); H01L 33/62 (2010.01); H01L 33/50 (2010.01); F21Y 115/10 (2016.01)
CPC F21K 9/232 (2016.08) [F21K 9/238 (2016.08); H01L 25/0753 (2013.01); H01L 33/50 (2013.01); H01L 33/62 (2013.01); F21Y 2115/10 (2016.08); H01L 2933/0041 (2013.01); H01L 2933/0066 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An LED filament, comprising:
at least one LED section, each LED section comprising at least two LED chips electrically connected to each other;
electrodes, electrically connected to the LED section; and
a light conversion layer, wrapping the LED section and parts of the electrodes, and comprising a top layer and a carrying layer, the carrying layer comprising a base layer and a transparent layer, the base layer comprising an upper surface and a lower surface opposite to each other, wherein the upper surface of the base layer being in contact with a part of the top layer, and a part of the lower surface of the base layer being in contact with the transparent layer, and the light conversion layer has a first end and a second end opposite to the first end, and the LED chips are located between the first end and the second end.