Led filament and light bulb using the same

An LED filament bulb, comprising:

• a bulb shell;
• a lamp base connected to the bulb shell;
• a stem disposed in the bulb shell;
• two conductive brackets disposed in the bulb shell;
• a driving circuit disposed in the lamp base and electrically connected to the two conductive brackets;
• and
• at least one flexible LED filament being bent in a space curved shape in the bulb shell and electrically connected to the two conductive brackets, the flexible LED filament comprising:
• two electrodes respectively disposed at two end of the LED filament;
• a first current branch electrically connected between the two electrodes, the first current branch comprising a plurality of first LED chips and at least one current-limiting resistor connected in series;
• a first conductive portion electrically connected between the two adjacent first LED chips, the first conductive portion comprising a first end portion connect to one of the first LED chips, wherein a first solder layer is disposed on the first end portion of the first conductive portion;
• a second current branch electrically connected between the two electrodes, the second current branch comprising a plurality of second LED chips connected in series;
• a second conductive portion electrically connected between the two adjacent second LED chips;
• a light conversion layer wrapping the plurality of first LED chips, the first conductive portion, the at least one current-limiting resistor, the plurality of second LED chips and a part of each of two electrodes,
• wherein the first current branch and the second current branch electrically connect in parallel.