Inverting an LCD - Page 4 - Toyota Yaris Forums

Sodium Duck · 03-19-2009, 12:24 PM

You just flipped it around? I thought you have to rotate it.

IllusionX · 03-19-2009, 03:10 PM

rotate?

when i took it apart, the other plastic just fell out, so i flip it over, and put it back together... i might try it with the yaris.. i'll get back if it works.

but as i saw the last time i took it off.. it seem like it was just a thin film glued on it..

CTScott · 03-19-2009, 04:04 PM

Flipping works the same as rotating with linear polarization.

LCD manufacturers used to just sandwich the polarizing film, so you could just flip it. Now they all seem to glue them (probably because most of what they make are now frameless ones).

Meteorite_Marty · 03-19-2009, 05:52 PM

Flipping does nothing on my radio. I had to remove the film (which has adhesive), and turn it 90 degrees.

Btw... I just got my new 17" polarizing sheet from 3Dlens.com. Fast delivery!!!

Tried it up against my radio and it seems the polarizing will be dark enough to invert the display. Will apply it tonight, and post pics.

Sodium Duck · 03-19-2009, 07:03 PM

Wow - that was fast! Can't wait to see how it looks.

So will your inversion be black background with green letters?

Sodium Duck · 03-19-2009, 07:04 PM

Oh, and how thick is the material? The one from Edmund Optics was pretty thick, maybe about 10 sheets of paper I'd say. Not very flexible at all.

CTScott · 03-19-2009, 08:17 PM

I've been doing some experimentation with LCDs. I have a reflective one (the black on white type with no backlight) and a transmissive one (black on white with a green backlight, hence black on green).

With the reflective one I can flip the polarizer to invert the characters. With the transmissive one flipping has no effect (I have to rotate the polarizer to invert).

In doing some reading, reflective LCDs use one clear polarizer on the front surface. Transmissive ones use a second on the back.

I took the transmissive one, pulled off the rear film and flipped it. After doing so I could also flip the front and the entire display was inverted and twice as bright as with the rear not flipped and the front rotated.

Sodium Duck · 03-19-2009, 08:40 PM

And we have the transmissive type for the gas gauge, correct?

CTScott · 03-19-2009, 08:49 PM

Here are some pictures:

Here is the normal mode for the LCD:

Here is the front and rear both flipped:

Here is rear normal, front rotated 90 on side A:

Here is rear normal, front rotated 90 on side B:

CTScott · 03-19-2009, 08:53 PM

Quote:

Originally Posted by Sodium Duck

And we have the transmissive type for the gas gauge, correct?

Correct - Gas gauge (and the radio display) are both transmissive. Hence the reason that flipping just one doesn't work.

Meteorite_Marty · 03-19-2009, 09:32 PM

Quote:

Originally Posted by Sodium Duck

Wow - that was fast! Can't wait to see how it looks.

So will your inversion be black background with green letters?

Black background with WHITE letters. I did a radio LED mod. My entire dash, heater controls, door lock, gear shifter are matched. NO MORE GREEN!!!

Meteorite_Marty · 03-19-2009, 09:34 PM

Quote:

Originally Posted by Sodium Duck

Oh, and how thick is the material? The one from Edmund Optics was pretty thick, maybe about 10 sheets of paper I'd say. Not very flexible at all.

Its a film. Rigid, but as thin as one sheet of paper.

Sodium Duck · 03-19-2009, 10:39 PM

Scott, you playing with your OBDII port? What are you brewing over there!? =]

CTScott · 03-19-2009, 10:43 PM

Quote:

Originally Posted by Sodium Duck

Scott, you playing with your OBDII port? What are you brewing over there!? =]

That's my home brew ScanGauge. It's not packaged and the LCD is socketed, so it's a good test platform for monkeying with LCDs.

CTScott · 03-19-2009, 10:45 PM

When you put the ES film on your gas gauge, did you notice the effect in the pictures, where when rotated the film works on either side, but one much better than the other?

Sodium Duck · 03-20-2009, 12:32 AM

I did a test where I just held the film up to the LCD, both sides and both directions, and didn't notice any difference. *shrug* maybe it's just me?

Sodium Duck · 03-20-2009, 12:33 AM

You know, I still have one more 2" X 2" film... maybe I'll try replacing the back...

Meteorite_Marty · 03-20-2009, 09:57 AM

Here are my pictures of my completed test radio deck. I also took some comparison shots with my main radio deck, which I will do later. Test deck is the one with cracked button.

03-19-2009, 12:24 PM	#55
Sodium Duck ╚══════════RN Drives: 2008 Liftback Join Date: Oct 2008 Location: Western Mass. Posts: 999	You just flipped it around? I thought you have to rotate it. __________________ 42.88

03-19-2009, 07:03 PM	#59
Sodium Duck ╚══════════RN Drives: 2008 Liftback Join Date: Oct 2008 Location: Western Mass. Posts: 999	Wow - that was fast! Can't wait to see how it looks. So will your inversion be black background with green letters? __________________ 42.88

03-19-2009, 07:04 PM	#60
Sodium Duck ╚══════════RN Drives: 2008 Liftback Join Date: Oct 2008 Location: Western Mass. Posts: 999	Oh, and how thick is the material? The one from Edmund Optics was pretty thick, maybe about 10 sheets of paper I'd say. Not very flexible at all. __________________ 42.88

03-19-2009, 08:40 PM	#62
Sodium Duck ╚══════════RN Drives: 2008 Liftback Join Date: Oct 2008 Location: Western Mass. Posts: 999	And we have the transmissive type for the gas gauge, correct? __________________ 42.88

03-19-2009, 10:39 PM	#67
Sodium Duck ╚══════════RN Drives: 2008 Liftback Join Date: Oct 2008 Location: Western Mass. Posts: 999	Scott, you playing with your OBDII port? What are you brewing over there!? =] __________________ 42.88

03-19-2009, 03:10 PM	#56
IllusionX It's the illusion you see View User's Garage Drives: 07 Yaris Sedan Aero Join Date: Oct 2006 Location: Brossard, QC Posts: 3,888	rotate? when i took it apart, the other plastic just fell out, so i flip it over, and put it back together... i might try it with the yaris.. i'll get back if it works. but as i saw the last time i took it off.. it seem like it was just a thin film glued on it..

03-19-2009, 04:04 PM	#57
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Flipping works the same as rotating with linear polarization. LCD manufacturers used to just sandwich the polarizing film, so you could just flip it. Now they all seem to glue them (probably because most of what they make are now frameless ones).

03-19-2009, 05:52 PM	#58
Meteorite_Marty Drives: 2008 5-door Yaris Hatchback Join Date: Oct 2008 Location: Waterloo, Ontario, Canada Posts: 389	Flipping does nothing on my radio. I had to remove the film (which has adhesive), and turn it 90 degrees. Btw... I just got my new 17" polarizing sheet from 3Dlens.com. Fast delivery!!! Tried it up against my radio and it seems the polarizing will be dark enough to invert the display. Will apply it tonight, and post pics.

03-19-2009, 08:17 PM	#61
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	I've been doing some experimentation with LCDs. I have a reflective one (the black on white type with no backlight) and a transmissive one (black on white with a green backlight, hence black on green). With the reflective one I can flip the polarizer to invert the characters. With the transmissive one flipping has no effect (I have to rotate the polarizer to invert). In doing some reading, reflective LCDs use one clear polarizer on the front surface. Transmissive ones use a second on the back. I took the transmissive one, pulled off the rear film and flipped it. After doing so I could also flip the front and the entire display was inverted and twice as bright as with the rear not flipped and the front rotated.

03-19-2009, 08:49 PM	#63
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Here are some pictures: Here is the normal mode for the LCD: Here is the front and rear both flipped: Here is rear normal, front rotated 90 on side A: Here is rear normal, front rotated 90 on side B:

03-19-2009, 10:45 PM	#69
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	When you put the ES film on your gas gauge, did you notice the effect in the pictures, where when rotated the film works on either side, but one much better than the other?

03-20-2009, 12:32 AM	#70
Sodium Duck ╚══════════RN Drives: 2008 Liftback Join Date: Oct 2008 Location: Western Mass. Posts: 999	I did a test where I just held the film up to the LCD, both sides and both directions, and didn't notice any difference. shrug maybe it's just me? __________________ 42.88

03-20-2009, 12:33 AM	#71
Sodium Duck ╚══════════RN Drives: 2008 Liftback Join Date: Oct 2008 Location: Western Mass. Posts: 999	You know, I still have one more 2" X 2" film... maybe I'll try replacing the back... __________________ 42.88