Thin light emitting diode circuit substrate and lamp strip

摘要

A flexible thin-type light-emitting-diode circuit substrate comprises a top copper layer 12 having a circuit pattern 21 connecting to light emitting diodes, a bottom copper layer 11 and an electrically insulating layer 13 between the top and bottom copper layers. The flexible substrate is easily bent upwards forming reflectors 22 of a long lamp strip (fig 8) that can be incorporated into a liquid crystal display direct backlight (fig 13) or side lit back-light (fig 14) Reflectors 22 may have a shining layer 14 and a transparent weld-proof layer 15 to prevent solder contamination of the reflectors. The top and bottom copper foil layers dissipate heat generated by the LEDs and allow bending angles 23, 24 of 90 — 180 degrees.