The World of Liquid Crystal Displays (2006) | Hacker News Reader

The World of Liquid Crystal Displays (2006)

personal.kent.edu

57 pointsvinchuco11 comments

I know it's an introduction, but it misses a lot of the interesting points that are actually important even for people just buying LCDs --- like how intensity gradation is achieved (FRC/temporal dithering vs. pure DAC) and why inversion/AC driving signals are necessary, and how they can contribute to flicker and odd artifacts when displaying certain patterns.

Those wishing to know may find the answers in here:

http://web.nchu.edu.tw/pweb/users/fansen_wang/lesson/7043.pd...

http://www.techmind.org/lcd/

http://www.solomon-systech.com/files/ck/files/Application%20...

In my experience, panel and driver IC manufacturers seem to give the best explanations of the technology, and it's often quite readable even for someone without experience with LCDs.

These are great! I'm actually diametrically opposed to expert status in this area.

I came across this trying to figure out how these work: https://www.youtube.com/watch?v=CJvNEzCaNwg

to try to answer some questions: a) How hard could it be to do a DIY version vs buying one? b) Why don't they produce larger (blackboard-sized) versions of this tablet i.e. for school settings? c) Downsides? How much do these really last?

Internal examination of a slightly different model: https://www.youtube.com/watch?v=Qgt1b81DJEw

I guess

a) and b) economics of scale apply positively and negatively, respectively, ie. cost and, again, cost.

I assume transflective displays hit a limit on density and color reproduction. But I really wish they hadn't. A tablet would be perfectly readable indoors and outdoors with it. My Dell Axim was great in sunlight and still had a backlight for indoors.

This probably needs a [2006] in the title.

or a (2011)

That explains the web design as well.

you mean how it loaded instantaneously?

Even for 2006, thats some old fashioned design. But doesn't mean that it's bad - no distractions, leads straight to the content. I like it.

QED

Reply on news.ycombinator.com