Invention Grant
- Patent Title: LED filament and LED light bulb
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Application No.: US17510429Application Date: 2021-10-26
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Publication No.: US11997768B2Publication Date: 2024-05-28
- Inventor: Tao Jiang , Wei-Hong Xu , Yukihiro Saito , Hayato Unagiike , Ai-Ming Xiong , Jun-Feng Xu , Yi-Ching Chen
- Applicant: ZHEJIANG SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD
- Applicant Address: CN Zhejiang
- Assignee: ZHEJIANG SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD
- Current Assignee: ZHEJIANG SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD
- Current Assignee Address: CN Zhejiang
- Agency: Calderon, Safran & Wright, P.C.
- Agent Andrew M. Calderon
- Priority: CN 1410510593.6 2014.09.28 CN 1510053077.X 2015.02.02 CN 1510316656.9 2015.06.10 CN 1510347410.8 2015.06.19 CN 1510489363.0 2015.08.07 CN 1510502630.3 2015.08.17 CN 1510555889.4 2015.09.02 CN 1510966906.3 2015.12.19 CN 1610041667.5 2016.01.22 CN 1610272153.0 2016.04.27 CN 1610281600.9 2016.04.29 CN 1610394610.3 2016.06.03 CN 1610544049.2 2016.07.07 CN 1610586388.7 2016.07.22 CN 1610936171.4 2016.11.01 CN 1611108722.4 2016.12.06 CN 1710024877.8 2017.01.13 CN 1710079423.0 2017.02.14 CN 1710138009.2 2017.03.09 CN 1710180574.5 2017.03.23 CN 1710234618.8 2017.04.11 CN 1710316641.1 2017.05.08 CN 1710839083.7 2017.09.18 CN 1730450712.8 2017.09.21 CN 1730453237.X 2017.09.22 CN 1730453239.9 2017.09.22 CN 1710883625.0 2017.09.26 CN 1730489929.X 2017.10.16 CN 1730517887.6 2017.10.27 CN 1730520672.X 2017.10.30 CN 1730537542.7 2017.11.03 CN 1730537544.6 2017.11.03 CN 1711434993.3 2017.12.26 CN 1711477767.3 2017.12.29 CN 1810031786.1 2018.01.12 CN 1810065369.9 2018.01.23 CN 1810343825.1 2018.04.17 CN 1810344630.9 2018.04.17 CN 1810498980.0 2018.05.23 CN 1810501350.4 2018.05.23 CN 1810573314.9 2018.06.06 CN 1810836433.9 2018.07.26 CN 1810943054.X 2018.08.17 CN 1811005145.5 2018.08.30 CN 1811005536.7 2018.08.30 CN 1811079889.1 2018.09.17 CN 1811277980.4 2018.10.30 CN 1811285657.1 2018.10.31 CN 1811378173.1 2018.11.19 CN 1811378189.2 2018.11.19 CN 1811549205.X 2018.12.18
- Main IPC: F21K9/232
- IPC: F21K9/232 ; F21K9/61 ; F21V3/08 ; F21V3/12 ; F21V15/04 ; H05B45/00 ; F21Y115/10 ; H05B45/3577
Abstract:
An LED filament comprising a plurality of LED filament units, each of the plurality of LED filament units includes a LED chip with an upper surface and a lower surface opposite to the upper surface of the LED chip, and a light conversion layer comprising a top layer and a base layer, and the base layer comprises an upper surface and a lower surface opposite to the upper surface of the base layer, where the top layer with an upper surface and a lower surface opposite to the upper surface of the top layer is disposed on at least two sides of each of the LED chips, the lower surface of each of the LED chips is close to the upper surface of the base layer, and the upper surface of the top layer is away from each of the LED chips.
Information query
