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Pi-Cell Specifications
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One Eyed Hopeful
Joined: Thu Feb 10, 2011 10:07 pm Posts: 4 
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Hey there,
I'm wondering if anyone around here would know where I can find the specifications for pi-cell LCDs. I have a pair of edimensional glasses that I want to build a driver for, and I want to do it right. I've been looking everyone for some basic specs like voltage and duty cycle, but can't find anything. Thanks! |
| Thu Feb 10, 2011 10:11 pm |
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Terrif-eying the Ladies!  Joined: Wed Mar 17, 2010 9:35 am Posts: 893 Location: As far from Hold Display guys as possible!!! ^2
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that's the closest i ever saw:
http://www.lctecdisplays.com/files/datasheets/FPR-TN.pdf _________________ -Biased for 0 Gen HMD's to hell and back must be one hundred percent hell bent bias! |
| Fri Feb 11, 2011 4:53 am |
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One Eyed Hopeful
Joined: Thu Feb 10, 2011 10:07 pm Posts: 4
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Thanks trtosine, that looks pretty good.
Anyone know of edimensional (or pi-cell) specific? Either from a spec sheet or trial and error? I want to hold off blowing my pair of glasses up until I've exhausted all of my other resources. I've heard that there has to be some sort of 3V level to keep it in a "transparent" state then a 20V driving signal to turn it on or off... but I can't find either official information or concrete testimonials about this. |
| Fri Feb 11, 2011 11:23 am |
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Two Eyed Hopeful  Joined: Thu Mar 04, 2010 12:50 pm Posts: 80 Location: France
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I've made some reverse-engineering on an Xpand X-101 PI-cell glasses :
viewtopic.php?f=26&t=10169 |
| Fri Feb 11, 2011 12:19 pm |
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One Eyed Hopeful
Joined: Thu Feb 10, 2011 10:07 pm Posts: 4
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Nice Petrus!
Where did you learn all of this stuff, like how did you know the 2V level across the LCD is called the "Pi State"? |
| Fri Feb 11, 2011 12:21 pm |
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Two Eyed Hopeful Joined: Thu Mar 04, 2010 12:50 pm Posts: 80 Location: France
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I've just made some research on Internet :
http://www.liquidcrystaltechnologies.co ... i_Cell.htm |
| Sat Feb 12, 2011 6:31 am |
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One Eyed Hopeful
Joined: Thu Feb 10, 2011 10:07 pm Posts: 4
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Thanks Petrus!
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| Sat Feb 12, 2011 10:24 am |
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One Eyed Hopeful
Joined: Mon Jan 18, 2010 6:16 am Posts: 31
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mpiche wrote: Hey there, I'm wondering if anyone around here would know where I can find the specifications for pi-cell LCDs. I have a pair of edimensional glasses that I want to build a driver for, and I want to do it right. I've been looking everyone for some basic specs like voltage and duty cycle, but can't find anything. Thanks! Hi, so far as I know the PI-cell use a hight voltage to black the shutter(on) and use a low voltage bright the shutter(bright). so you can driver the PI-cell with a waveform about 27V and 3.3V |
| Tue Jul 26, 2011 1:15 am |
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