US Patent 11378238 Light string and light string circuits

A light string includes an illumination device, a first wire, a second wire, soldering material, and transparent adhesive. The illumination device includes two soldering portions. The conductors of the first wire and the second wire are partially exposed to form a first soldering section and a second soldering section. Soldering material is used to attach the first soldering section and the second soldering section to the two soldering portions. The transparent adhesive forms a layer over, and covers, the illumination device, the first soldering section and the second soldering section, and extends to partially cover other portions of the first wire and the second wire.