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How to reverse the scan on an LCD monitor?


justaking's Avatar
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04-27-07, 11:32 AM   #1 (permalink)  
How to reverse the scan on an LCD monitor?

Hello to all:

I need to reverse the scan (left to right) on an LCD monitor so I can use it for a teleprompter into a beam splitter glass.

I've done this with CRT's by simply reversing the leads to the horizontal coil on the neck of the tube. Not sure of the principle with LCD's however. Can anyone shed some light on how I might go about this or even if it can be done?

The unit I have uses a Sharp LQ10D367 10.4" LCD panel as the base. The single ribbon cable is so thin I'm not sure I can even work with it.

The alternative is to do something between the computer's SVGA output and the monitor??

Any suggestions?

Thanks!

 
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04-27-07, 02:53 PM   #2 (permalink)  
Go to the video card settings.. See if there is a reverse display setting in there..

 
joed's Avatar
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04-27-07, 05:41 PM   #3 (permalink)  
Put a mirrror in front of it?
Put it through another beam splitter to reverse it back?

 
Rick Johnston's Avatar
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04-28-07, 06:49 AM   #4 (permalink)  
Pin 30 (of 31) of that module's Hirose connector is the R/L scan direction. If it's left unconnected it's L->R. Unfortunately I can't find any specific info on whether it goes high or low to reverse the scan.

OTOH, you could just flip the text using PhotoShop or another graphics app ...

-- RJ

 
justaking's Avatar
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04-28-07, 01:17 PM   #5 (permalink)  
Rick:

Wow! This is fantastic. If this works it will be terrific. Can I ask where you found
the connector info and how I may get a copy of it?

Thanks,
George

 
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04-29-07, 04:37 AM   #6 (permalink)  
I searched for the module number and the word "reverse." Came up with this:

http://www.schijf.org/wiki/index.php/TFT_pinout_reference

Hit the link for Sharp, NEC - 31-pin Hirose DF9 version 1

I hit a dead-end after that trying to find out whether hi or low reverses the scan.

 
justaking's Avatar
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04-29-07, 02:38 PM   #7 (permalink)  
Seems I lucked out as there are not too many listed that offer the reverse L to R and U and D.

My CCFL backlight seems to be burned out so I need to replace this first and then I'll try the pins. Perhaps grounding Pin 30 through a 1K resistor or to B+ will determine which way will reverse the image.

George

 
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