Somehow remind me COSMOS with Carl Sagan ...

LCDs**

All these colors are just part of their mating ritual.

Color*

amogus******

I'm 36, and I got the same hand me down from my aunt! I (briefly) used it to track homework assignments.

“one of the great tech ghosts of my life” i love this terminology and i hope i use it some day thank you.

Enlightenment has no path, no hour.

What are your other tech ghosts?

This sounds like some Scientology thing taken out of context

My mom had one of those in the 90’s to take notes at work on

right? what an absolute vibe. the novel color display and its impact on the interface are great, of course, but all of the animations are _amazing_

As martincitopants said: "Every video you make has a chance to pop off, and every time you don't pop off you have another video availble to watch once you do" and i think this applies to Posy. The video which poped off was the "Mouse cursor history", and all the other videos are also quality content you can watch ! :)

@@propanux every. single. one. I agree

I think it was segmented displays followed by the mouse cursor, for me :D

@@propanux yow tf do we all watch the same creators?

@@propanux Segmented is what popped off in May and got Posy from 4500 subs to 100k in a week, the rest is just a side effect of that :) Really glad that it did happen because he has so many great videos that didn't get the views they deserved previously

Ty for the information. Sounds dope

Sounds sensible. The whole twisted nematic bit is also the same tech used in mood rings. There the crystals change their length with temperature, which produces interference with different wavelengths.

Good explaination! But I'm still unaware, yet impressed, how these G-Shock pigmented displays are working. I've never encountered them in person (just the regular B&W ones), and my mind is blown about how the liquid-crystal matter can be fully transparent in one polarization, and fully scattering in another. More than, it's so confusing to see how the digits that appears scattering (thus cannot effectively transmit the light through the LCD packet) can be illuminated by backlight, wnile the remaining transparent regions (where you can see the mirror) cannot. And also how the two-layered digits (which appears red on the intersection) works, so would be interested to see an explaination from the engineers (with the full disassembly and removing both polarizers from the LCD packet)

Excessively detailed essay because I'm bored and this is interesting. The particular kind of LCD stated in that patent uses the TN-effect. That's Twisted Nematic. Standard TN displays filter light, twist it by 90°, then filter it again perpendicular to the first filter. That's the off state, since light passes through just fine. When you apply a voltage, the crystals line up front to back, the light doesn't twist, you get black. Now, the patented display uses a STN display. That's _Super_ Twisted Nematic! STN displays can twist light by more than 90°. In the patent, it says they used 180-270° of twist, presumably varied by voltage. The filters are parallel. Doesn't make much difference, but it probably made life easier. Between the STN layer and the front filter is a retardation plate. According to Olympus, the microscope manufacturer, a retardation plate twist light by specific amounts. One kind can twist different wavelengths by different amounts. The patent states 35-55°. Math time! Assumptions included. Don't worry, it's just arithmetic. Off is 180°, in phase. Light gray is 215°, 35° out of phase. Mid gray is 225°, 45° out of phase. Dark gray is 235°, 55° out of phase. Maybe. I'm just guessing. You'll see why those numbers in a sec. I think the 270° is either a red herring or a spec that isn't fully used. I didn't see any black, so probably the latter. For the colors, red is at one end, blue at the other, green in the middle. I'm going to say 1,2,3 since I don't know which end is where. 1 gets twisted by 35°. 2 gets twisted by 45°. 3 gets twisted by 55°. Probably. Reverse of the twist in the STN layer. Maybe 3 is blue because blue has more energy and bounces off the crazy optics harder? Just a guess. So red light gets twisted some such that it hits the crystals just so and winds up perfectly in phase. Magic. Green gets twisted by a different amount. Same story, magic. Repeat for blue. Witchcraft and sorcery. Pretty nifty, and probably way more efficient than TFT displays, but also something like a tenth as fast. I imagine it isn't used much because it sounds hard to do and Casio probably decided it wasn't worth it which explains the expired patent. If you did, thanks for reading :)

I suppose this means in theory this technology could produce any pure hue but couldn't change the saturation or per pixel brightness? Perhaps full colour could be achieve by having it able to UV which we can't see to create black and rapidly switching between primaries. For example 4 m/s UV (black followed by 8 m/s red followed by 4 m/s green would produce brown for example.

Dude I think you've summed up everyone's feelings. That last sentence has it!

I had the S45. A great phone for the time.

Thanks when I saw the LCD I remembered the time Siemens brought them out but I forgot the SL10 name. I wanted one but it's not true colour but I found it nice anyway most of my friends were rocking the 3210, 3310, 3330 series of Nokia and this was quite refreshingly different. But as you point out, I went for the 7210 a few years later with its reflective STN.

I actually thought the Game Boy color used this technology, but in that case I just failed to see the subpixels.

More than yours😂

amazing comment! Posy should totally reach out to you to do visuals for one of your jam sessions to make the ultimate experience that will transport peeps to the ethereal plane or something. coolio

Actually, the strobing of the colors makes it a bit like an odd color-wheel system that was proposed for color TV.

@@pokepress Really? I've never heard of such a thing! Color on NTSC televisions was ultimately just hacked into the existing black & white video signal.

@@pokepress Field sequential color was proposed for a long time for active matrix LCDs, but the switching time of nematic mode was never fast enough across all transitions. If we could do it, we could remove both the colour filters and black area dedicated to driving three subpixels, resulting in a gigantic increase in power efficiency. They could use a fraction of the power. Optically compensated bend type LCD had the speed, but not the contrast. Blue Phase mode LCD has challenges with required voltage and temperature range.

@@Tattlebot There was, I think Technology Connections showed it, a very expensive professional colour monitor mean for film and TV production, that used an odd field-sequential CRT / LCD hybrid! Beautiful picture apparently. As you probably know, colour CRTs split the screen into RGB sub-pixels, where B&W CRTs don't have any "pixels" at all, it's just a smooth line, at least horizontally. Nice smooth uninterrupted picture. So they took a decent B&W CRT monitor, and stuck an LCD "colour wheel" in front. This LCD simply changed from transmitting red, to green, to blue, rapidly, while the monitor changed along with it, at a high speed. Field-sequential colour except a flat LCD panel replace the spinning wheel. Apparently very good, but too niche so not many were made. Interesting though, a CRT display without RGB subpixels, or indeed any colour display at all without subpixels. Same as the screen on the organiser in the video, just intrinsic colour. The monitor I'm talking about probably used LCD in the same mode. Wait... I found it! kzfaq.info/get/bejne/sJOha8iZ367JgYU.html

@@greenaum If IPS displays have 1 ms average response time these days, they should be capable of FSC operation. I wonder why they're still all WLED? It must be because, while FSC blocks much less light, RGB backlights are less efficient, and have temperature and unequal lifetime issues.

Damn.. I can never get rid of that accent :-/

Could you send a link to those cursors

@@EliStettner literally go look up his most watched video, how are people this lazy

I always forget I have them lol

I came here to say the same thing, I was 15 at the time of having a Pocket Pikachu 2 GS and knew that typical LCD's used Red/Green/Blue subpixels, but was fascinated how a single pixel could change to different colors like that.

I just discovered Posy and now Ahoy in the same day. Thank you stranger. My rabbitholes will be deep and fulfilling

Where do you get the polarisers? You mean ordinary ones for ordinary LCDs?

@@greenaum Yes, ordinary ones!

Danku :)

Same here, it's fascinating how this is not the first time I go down and find other people commenting exactly what I just thought. Was it you that stumbled upon Posy's channel and brought me here or was it the other way round? :D

Thank you :)

It's only fuzzy because it uses 4-groups of square pixels as "subpixels" on the OLPC. Other Pixel Qi panels that were produced had the usual RGB subpixel pillars in a single square pixel.