Single-ended power supply all-around LED lamp filament and manufacturing method thereof
2014
Provided is a single-ended power supply all-around LED lamp filament. Two rows of LED wafers are arranged on a strip-shaped substrate, each row of LED wafers are identical in front-back sequence, different rows of LED wafers are opposite in front-back sequence, and heads and tails of the LED wafers are connected through lead wires to form a U-shaped LED cluster. A pair of electrodes is arranged at one end of the strip-shaped substrate close to the U-shaped LED cluster, and each end LED is respectively connected with one electrode through an elargol conductive region formed by an elargol layer. All exposed surfaces of LED wafer regions arranged on the strip-shaped substrate are coated with fluorescent glue. The invention further discloses a method for manufacturing the single-ended power supply all-around LED lamp filament. Compared with the prior art, good light-emitting effect and good mechanical connecting firmness are obtained.
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