LED light bulb

An LED light bulb comprising:

• a lamp housing;
• a lamp cap connected to the lamp housing;
• a driving circuit disposed in the lamp cap;
• a stem disposed in the lamp housing and connected to the lamp cap;
• two conductive brackets disposed in the lamp housing, the two conductive brackets having opposite polarities and electrically connected the driving circuit;
• and
• an LED filament disposed in the lamp housing and electrically connected to the two conductive brackets, the LED filament comprising:
• a chip strip structure comprising a substrate, a plurality of deposition units disposed on the substrate and arranged along a longitudinal direction of the substrate, a connecting layer disposed between the two adjacent deposition units and a conductor layer disposed on the connecting layer and electrically connected to the two adjacent deposition units;
• a light conversion unit wrapping the chip strip structure;
• and
• two electrodes disposed at two opposite ends of the substrate and electrically connected to the plurality of deposition units, the two electrodes further electrically connected to the two conductive brackets respectively,
• wherein the connecting layer is disposed on the substrate and between every two adjacent deposition units, so that the plurality of deposition units form a continuous strip-shaped structure on the substrate;
• wherein the deposition unit comprises:
• a first semiconductor layer disposed on the substrate;
• a light-emitting layer disposed on the first semiconductor layer;
• a second semiconductor layer disposed on the light-emitting layer;
• a first electrode disposed on the first semiconductor layer and spaced apart from the light-emitting layer;
• and
• a second electrode disposed on the second semiconductor layer.