We have found at least a decent mechanism to open/close monitor for Mazda 6 (Atenza).
Here you can see all pieces involved.
And here is the result:
It's from a chinesse manufacturer. Fits 7" screen (not included). Price will be arround $200 plus shipping. Normally they only sell complet systems (with monitor and DVD player), but through a mazda spanish forum
http://www.mazdaseis.com they agree to sell the parts shown above if we purchase 20 units.
Up to now we are 9. If you want to join us please send me a pm and I'll put you in contact with the purchasing group.