The Journal said the Internet retail giant is working on several gadgets to add to its offerings of Kindle tablets and e-readers.
The report, citing people familiar with Amazon's plans, said the devices include two smartphones and an audio-only streaming device.
The 3D screen would use retina-tracking technology, allowing images on the smartphone to seem to float above the screen like a hologram and appear three-dimensional.
Speculation about Amazon smartphones has been circulating since 2011. At that time Citigroup said in a research note it believed an Amazon smartphone was in the works for the following year.
The Journal said Amazon is making a broader push into hardware but still could defer the plans for financial or performance reasons.
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