What limits LCD resolution?

[zephyrprime]

I'm thinking that since LCD's use photolithography to create their semiconductor parts (the pixels), shouldn't it be possible to create really small pixels? After all, CPUs have really small transitors so why should LCDs have pixels that are hundreds of microns big? The only thing I could think of is that maybe LCDs have row and column power lines like a DRAM chip does but since the lengths of these lines would be many centimeters long, you couldn't make the lines too thin or else there would be too much resistance. I don't really know but does anyone here know?

 

[CTho9305]

the actual liquid crystal stuff isn't done that way, is it?

 

[Shalmanese]

An obvious reason is that the DVI spec only goes up to 1280x760 right now so not many Mfgs like making panels larger than this. Another reason is that Windows is just plain unusable once you get past 1600x1200 on a 15" panel. Also, the more pixels you pack, the greater the chance of a "dead" pixel. Once you get 2 or 3 dead pixels, the monitor has to be scrapped.

 

[ProviaFan]

IBM has a very high resolution flat panel, but I have no idea how they manage to get somewhere in the range of 3072x2056 (or something like that!) down a monitor cable of any sort. I just didn't know it was possible. :Q

 

[Peter]

Originally posted by: Shalmanese
An obvious reason is that the DVI spec only goes up to 1280x760

Nah. Single channel DVI is 165 MHz, enough for 1600x1200, or 1920x1200 with "reduced blanking period" timings. Double-channel DVI has two 165 MHz channels for twice as much.

 

[Vegito]

Actually the dell inspirons has like 15" 1600x1200.. its very sharp.. icon are also bearly visible.. hahaha

 

[Peter]

Originally posted by: Shalmanese
An obvious reason is that the DVI spec only goes up to 1280x760 right now so not many Mfgs like making panels larger than this. Another reason is that Windows is just plain unusable once you get past 1600x1200 on a 15" panel. Also, the more pixels you pack, the greater the chance of a "dead" pixel. Once you get 2 or 3 dead pixels, the monitor has to be scrapped.

Where'd you get that 1280x760 figure from? Any stupid budget 17" display is at 1280x1024 already, and yes they do have (single channel) DVI.

 

[Shalmanese]

Sorry, I meant 1280x1024 but there was a thread by pm a while ago griping about how his DVI/Analog CRT screen could only handle 1280x1024 via DVI and it seemed that all cards could only output that.

 

[Mday]

what limits LCD resolution?

the number of pixels. and what are pixels? transistors.