Color-temperature-variable flexible lamp strip with inverted LED chips

Abstract

The invention discloses a color-temperature-variable flexible lamp strip with inverted LED chips. The flexible lamp strip comprises a plurality of flexible circuit board units and a plurality of LED light-emitting chips, the flexible circuit board units and the LED light-emitting chips extend in the length direction of the lamp strip, and the LED light-emitting chips are fixed to the flexible circuit board units in an inverted chip structure mode and covered with fluorescent glue with different color temperatures, so that the LED light-emitting chips have different color temperatures. The flexible circuit board unit comprises a circuit layer and a supporting layer, the circuit layer is provided with a plurality of wire structures, and the LED light-emitting chips are welded to the two oppositely-arranged wire structures so as to ensure reliable connection of the wire structures. The supporting layer is provided with a supporting structure so as to increase the flexibility of the flexible lamp strip when the flexible lamp strip is bent, so that the bending angle of the flexible circuit board unit is controlled, and the LED light-emitting chip cannot fall off due to excessive bendingof the flexible circuit board unit.

Description

technical field [0001] The invention relates to the technical field of light strips, in particular to a flexible light strip with variable color temperature and flip-chip LED chips. Background technique [0002] Existing flexible light strips are generally formed by welding a plurality of SMD LED lamp beads on a long flexible circuit board, and then undergoing different processes such as threading tubes and dripping glue. The existing flexible light strips have the following defects: LED lamp beads need to go through a series of processes such as crystal fixing, wire welding, and glue sealing, and the light strips also need to be mounted and threaded. The production process is complicated and the cost is high; excessive bending Improper bending or bending is prone to the problem of broken circuit at the soldering part of the lamp bead. Because the LED lamp bead is a hard body and the circuit board is a flexible body, the stress point of the lamp bead is relatively large, and...

AI Technical Summary

Problems solved by technology

The existing flexible light strips have the following defects: LED lamp beads need to go through a series of processes such as crystal fixing, wire welding, and glue sealing, and the light strips also need to be mounted and threaded. The production process is complicated and the cost is high; excessive bending Improper bending or bending is prone to the problem of broken circuit at the soldering part of the lamp bead. Because the LED lamp bead is a hard body and the circuit board is a flexible body, the stress point of the lamp bead is relatively large, and it is possible to bend the circuit board many times. The phenomenon that the solder pins of the lamp bead break off the solder pad due to the large force

Images