  Hybrid pixel detectors have been invented for the LHC to make tracking and
vertexing possible at all in LHC's radiation intense environment. The LHC pixel
detectors have meanwhile very successfully fulfilled their promises and R\&D
for the planned HL-LHC upgrade is in full swing, targeting even higher ionising
doses and non-ionising fluences. In terms of rate and radiation tolerance
hybrid pixels are unrivaled. But they have disadvantages as well, most notably
material thickness, production complexity, and cost. Meanwhile also active
pixel sensors (DEPFET, MAPS) have become real pixel detectors but they would by
far not stand the rates and radiation faced from HL-LHC. New MAPS developments,
so-called DMAPS (depleted MAPS) which are full CMOS-pixel structures with
charge collection in a depleted region have come in the R\&D focus for pixels
at high rate/radiation levels. This goal can perhaps be realised exploiting HV
technologies, high ohmic substrates and/or SOI based technologies. The paper
covers the main ideas and some encouraging results from prototyping R\&D, not
hiding the difficulties.
