LCD panels

[remp]

Rekr

Great find.

LCD Panel
15.0" (38.1 cm), Active Matrix TFT LCD Module
Max. Display Area: 304.1 x 228.1 mm
Displayable Colors: Max. 16M Colors

Resolutions
VGA 640 x 480
SVGA 800 x600
XGA 1024 x 768 60Hz, 75Hz
MAC 640 x 480 67Hz, 832 x 624 74.5Hz, 1024 x 768 70Hz
NEC-PC98. 640x400 70Hz

Contrast ratio 300:1
Response Time 7/23 ms (TR/TF)

OSD Control Function
Main Menu, Auto Adjust, Monitor Control, Graphic Control, Misc. Control.

OSD Language
English, German, France, Italian, Spanish

Interface
Input Signal: Analog 0.7 V Peak to Peak
Sync.: Separate SYNC (TTL Positive or Negative)
Signal Cable

D-Sub 15 Pin Connector

Power Source
12V 3.75A, 45W, Universal Input AC Adapter (External)

Certifications
UL, CUL, TUV-GS, CE Mark, VCCI, FCC B DoC, NORDIC TOC'99 (optional), Energy Star, 13406-2

At this sort of price and specifications its hardly worth looking at any other solution but for those interested in the technical spec of a laptop panel try this

http://www.eio.com/hsd141px11-a.pdf

It shows some interesting technical details of an LCD panel, voltages timing range etc.

[uvodee]

come on you guys, i am having time off and i really would like test the 2 lcd's : NEC NLl6448AC33-18 and the Sharp LQ10D32A

so what do we do know... a/d converterboard and the right cables??
i have all technical info on both of them here in front of me (device specification and manual!)

[remp]

Your LQ10D32A is an older laptop unit.

Pull price around $50.
5v supply
31 pin hirose connector
10.4 inch
262144 colours (18 bit)
640 x 480 resolution
TTL drive.

Sorry Uvodee its an older model not really worth spending the money for a controller. Our present knowledge of controllers is around the $200 mark. I am not pushing TTL. There are just too many variables. If it was a 20 pin LVDS could suggest a matching video card, or a stand alone controller around the $150 mark.

To maximise your dollar for projection purposes you need to score a better resolution panel say 1024 x 768 at about the $100 - $150 mark. Then the cost of the controller is more reasonable considering the substantialy better quality screen.
With present prices for LCD monitors so cheap (see above post) you would be better off buying a monitor and doing the mod to separate the vetical and horizontal boards. Gets you a modern product, direct analogue connection to your computer (or controller) and has contrast ratio 300 :1 Better product at a good price. Thats what happens when prices come down.

If you still want to go Digital you need to find a TTL controller for your panel. I cannot help you there. Someone else could.

Your other panel I have not looked at yet.

[zardoz]

I've got a multi panel controller here now, with a couple of cables. I'm waiting for my first panel to arrive, it was a second choice panel but I'm OK with that for the moment. The one on the way is a TTL panel LQ121S1DG11. The seller claims it's a high contrast full motion video capable screen, what the hell the price was liveable.

The screen I'm looking for is an NEC NL10276AC30-04, if you wouldnt mind could you email me the specs on your NEC? I want to see if there are significant differances on the panel pinouts, if they are the same I suggest it may be a matter of adjusting the timings or such on the controller I have. I really havent even looked at it since it got here.... just sort of sits there teasing me.... ( got the no panel yet blues )


zardoz

[uvodee]

www.planar.com/support/pdf/643329.pdf


this is the link to all the specs, i have the print out here in front of me

[zardoz]

Your panel will run on my controller...but it's prety much on par with my LQ121S1DG11. The thing that I do notice however is that your 10.4 NEC panel takes the exact same cable as the 10.4 inch Sharp LQ10D42. So is it safe to say that all 10.4 inch TTL panels with certain given parameters (timing's etc..) are all the same? Dont get me wrong...I'm not looking for universallity here....just commonallities. If this is the case... and it also applies to the LVDS method of connection then there is a lot of possibillities out there....sort of goes back to my original question..."are there just soo many panels out there, that the controller manufacturers only test a few and dont bother to tell us...oh yes...it should also support....but we havent tried those yet" I see in the documentation you found "compatible with....-18 -24 -27 model number suffixes. This is positive info for me Now I'm eager to find more pinouts for LVDS panels.

any comment remp? (looking good isnt it?)

zardoz

[remp]

Zardos


Quote by Zardos
Your panel will run on my controller..


Please to explain.

Uvodee's panels (both of them are very similar) are TTL driven.

Your controller is LVDS output.

You cannot drive a TTL panel with LVDS. Does your controller have TTL output. I did not realise that. Makes it rather a versatile controller. Why don't you get Uvodee to ship his panels to you and try them out. Then if its successful that opens one more door for us guys.

You put your finger on a good point about the similarity between panels and timing. Basically all TFT panels of the same size have the same timing. But there is another factor.

Assume you have to cover 100 metres in 10 minutes. At each meter along the way you have to plant a tree.

Now some guys (and gals) could go really slowly and just make it on time.
Other more athletic types could race along, stop every meter plant the tree and get to the finish in lets say 5 minutes.

So both do the same job, but the faster guys do it quicker. Your eyes see the trees being planted quicker. Now if someone could do it in 1 second, you could say hey thats fast I didnt even see it happen and now all those trees are there. And he does it again with different trees so you are now starting to see a fast "picture".

This has to do with full motion video.

Some panels even though they present the same information are just too slow to be useful for full motion video. They are OK for presenting slow changing information such as computer data where the picture only changes slowly.

You can have then two panels. Both will show a VGA screen but one is slow and is a data panel. The other is fast and can be used for full motion video.

There is no way to make a slow panel go quicker. Doesnt matter how quickly you feed it the information. The slow panel will not set it's ready signal until it is ready for more information.

The measurement is the responce time. If its slow forget the panel. If its fast could be OK for full motion video.

If you have a look at my post above in reply to Rekr, you can see I have posted the monitor responce time. Thats a good responce time.


My 10.4 inch projection panel at home is not bad but as soon as a fast action sport event comes on I see large parts of the picture struggling to keep up with the action. 90 percent of the time its not noticable. 10 percent of the time it is. But then again, its a 10 year old panel.

So you are right most panels of a particular size take similar timing but only the faster panels are suitable for full motion video.

[zardoz]

Yes my controller has 2 TTL ports and 1 LVDS port, also a VGA port. I have cables for 2 different TTL panels and 1 LVDS cable for the NEC panel they list as "tested". My panel should be here this coming week, as I said it was my second choice panel I'd rather have found an LVDS panel. The seller did state that it was suitable for "full multi media" so I hope his deffinition of "full multi media" isnt too different from ours. This is first generation I suppose, once I prove this will work I'll get the go ahead to find what will undoubtably be a more expensive panel. Or maybe it will work just dandy and I can proceed with my other plans without having to tinker with this too much more

zardoz

[zardoz]

I read the response time on my panel's spec sheet as follows
rise 15 ms
decay 30 ms

In a couple of days it wont be theory anyhow

zardoz

[uvodee]

Originally posted by zardoz
Yes my controller has 2 TTL ports and 1 LVDS port, also a VGA port. I have cables for 2 different TTL panels and 1 LVDS cable for the NEC panel they list as "tested". The seller did state that it was suitable for "full multi media" so I hope his deffinition of "full multi media" isnt too different from ours. zardoz

a) i am willing to shipp them to you if you want to try them out

b) i can also order that universal controller/board and see what happens. if it deos not work properly i can still put it in ebay.

what is the supplier? let me know.