My observations are based on studying these technologies. IPS cells have a smaller aperture because of the need for two electrodes in each cell. These electrodes block some of the light and also reflect some of it. If you want the evidence, you can read it at:
http://www.barco.com/barcoview/downloads/An_Introduction_to_IPS_pro_LCD_Technology.pdf
Read Pages 10 and 14. The paper talks explicitly about the need for brighter backlights for IPS due to the smaller cell aperture.
The paper also mentions the lower contrast ratio resulting from this property of IPS.
By the way, the higher the resolution of the panel per given size, the worse this problem gets.
Visualguy, unfortunately you have neglected my friendly advice...
I've looked at this paper.
Visualguy, you have surpassed yourself.
What you quote is a part of old history of IPS. Modern IPS is described in the same paper: cell aperture is large, pixel structure is different, black is much deeper, contrast ratio is doubled.
Don't you know that?
Do you post this deliberately or you really don't understand what you post?
Have you seen this? This is from the review of the monitor you have...
What dimention do you live in?
You don't know what panel is in your own monitor and come here to post ridiculous statements and "educate" others.
This is something!
Sorry about that.