Replies to post #346553 on Zeev's Turnips Patch-No Politics (ZEEV)

[Zeev Hed]

Reread my post (I edited it), and I believe that a mirror array is in lieu of an LCos, competing and a different solution for light valving.

[Zeev Hed]

DLP worries me in principle since each mirror is electromechanically moved in and out of the optical axis millions of times in a day (in about four hours of operation). My experience with a similar system (MEMS micro accelerometers) indicates that over time, dislocations and stresses build up, and possibly after about five years of operation (at just 4 hours a day), 1.5 billions cycles will have been sustained, at that level, one should expect some of the mirror to first lose their movement reversibility (with dislocations build up, hysteresis should ensue), and some may even fail, starting to show parts of the display dead.

I think that both systems, however use a light engine with a rotating mirror, though it is possible (if the number of microelements is multiplied by four) to avoid the rotating color whel in both systems. Mind you, the difficulty or increasing by a factor of four the number of pixels (and reducing their size) is breater with DLP than with LCos. Eliminating the rotating mirror also would require over frequency of operation to be quadrupled, making the driving electronics more costly, and more so for DLP than for LCos, IMHO.

[Applehead]

extelecom,

<< I believe from what I have read that there may be questions about what is the best quality for TV's?
I am definitely no expert about TV's, but I think I read something about Plasma TV's having some kind of fading problem.
Seems like one article I read seemed to favor the DLP TV's for some reasons. I did fond one article about LCoS here and it isn;t very favorable >>

From what little I know (sorry if this is redundant), it seems the options on the Hdtv/big screen front are -

1) PLASMA - best now from what I hear, but most expensive, might not last long (5 year life span?), and has fade problem...have a few friends who have Plasmas and they love them. Also, just saw the 102-inch Samsung Plasma (the biggest TV in the world) at the CES in Vegas and it was amazing.

2) DLP - Texas Instruments owns this technology, I believe. Gets ripped on bc of a 'rainbow' effect from action scenes, but I believe its getting better. I believe the CEO of TI said that DLP has grown from 0-15% market share of big screen market in 2 years...might be fastest growing market if true...must be something good there.

3) LCD - Just like most flat screen PC monitors. Heard Sony's 3LCD was the best technology from a few tech geeks at the CES (im one too ;-).

4.) RPTV - Rear Projection TVs. Not sure exactly how they fit in with the other technologies, but I believe the LCOS chips from the likes of SpatialLite (HDTV) and Brillian (BRLC) are used for them. Both claim their LCOS chips are better than the others. ;-) Intel was gonna jump in this market, take the low end and destroy everyone in a few years (my thoughts there ;-) but then they suddenly bailed in the Fall, I believe. Thought it was result of cut-backs, trying to reel in expenses, but not sure. Also not sure if they got back in?

When I did a little research on SpatialLight early last year, seemed they were a little hypish and too reliant on a few Asian contacts I had no clue about, but thats just my opinion.
Always looking for a good way to play the move to HDTV and don't have a great play yet...any good ideas?

cheers,
AH