Flat panel TV type (6)
I believe the answer is:
plasma
'flat panel tv type' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for plasma that I've seen before include "Clear part of blood" , "Colourless fluid part of blood" , "Colourless fluid of the blood and lymph" , "Component of TV screen" , "element of transfusion" .)