Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 23, 2021
Patent Application Number
16823949
Date Filed
March 19, 2020
Patent Citations Received
Patent Primary Examiner
Patent abstract
A light emitting device filament includes a substrate having a first surface and a second surface opposite to the first surface and extending in one direction, at least one light emitting device chip disposed on the first surface, and an auxiliary pattern disposed on the second surface and disposed at a position corresponding to the light emitting device chip.
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