Japanese electronics makers are developing TV sets with a resolution of more than 8 million pixels -- 4 times the current level.
Toshiba will release a new high-definition TV in December with 3D images that do not require special glasses.
Sharp plans to launch a model with improved perspective next year.
Sony will start selling large-screen high-definition video projectors for family use in December.
Japanese makers are hoping to create demand with the new models, as there has been a sharp decline in domestic TV sales since the switch to digital broadcasting in July. Sales in the United States and Europe -- 2 major markets for Japanese TV manufacturers -- also remain sluggish.