Does this lcd have controller on it?

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#21
More confusion

For the more knowledgable people on this forum.

My panel has a controller on it but I also need a driver board.

Are they one and the same? Do some controllers have both functions or do lcd panels always need both. Can somebody explain to me funciton of the two boards.

I can then go out and try to find what I need.

Thanks for any help.
 
#22
From what I can tell, it has the controller on it. That's the expensive part and you already have it. That thing that looks like an IDE connecter takes regular analog VGA signals, I believe. I think YHW is saying that you need a simple board that plugs into that thing and has a regular monitor plug on the other end. Something like that (assuming you could find it) should be very cheap.

If you can't find it, you could make your own cable. Just get a VGA cable, splice the wires, and wire it up to whatever connecter that is (probably a 50-pin Centronics- use a SCSI 2 cable). It'll be a serious pain in the a$$ but you won't have to fork out more than a few bucks.

I'm just guessing though. I don't know for sure. YWH can confirm or deny if I'm right or not.
 
#24
Lifter said:
Never mind. I'm completely wrong. I just looked at YWH's picture and it is exactly like yours (maybe not the LCD but all the electronics are the same). You don't have a controller. Ask him where he got his.
Click to expand...

the single driver board is my friend's ,he mde it,or DIY ,he can solder the IC,can program £¬he sell it CNY:300.
but, you have to test the driver board eith you LCD,to do test is very hard,you are farv way.

the driver board in my monitor is in the monitor
 
#28
i think exipnos may get lucky!

ywh said:
exipnos said:
Hi ywh
1. Do I only need the cable to drive this board?
No ,you need this driveboard
An externally hosted image should be here but it was not working when we last tested it.

2. Your panel seem to have an additional board attached to it. What is that?
Click to expand...

i think is the crt driver that NEC developped for easy replacement of regular monitors with their products, read on.....NEC Corporation (NEC) has developed a CRT (cathode ray tube) interface board for use with TFT (Thin Film Transistor) color liquid crystal display (LCD) monitors, providing plug compatibility with existing CRT monitors and enabling a multiscan function.
The CRT interface board has been realized for use with a line of large-screen 31 cm (12-inch) to 51 cm (20.1-inch), high-definition, full-color (using analog-signal processing), amorphous silicon TFT color LCD modules that NEC is now developing for use in a wide range of computers, from PCs to mainframes. This new board is intended to be packaged as a set with the full-color TFT modules, and will not be sold separately.

The main features of this board are:


Automatically capable of matching signal timing and pixel resolution in 33 combinations for a range of between 640x350 to 1280x1024 pixels;
Function to automatically determine the synchronization signal mode corresponding to separate, composite or sync-on-green states;
Automatic dot-clock signal generation, covering a wide frequency range of 21 MHz to 135 MHz;
Generator circuits (DC/DC converters) for two types of power-supplies used by the liquid-crystal modules avoids unnecessary power supply duplication;
Function for handling both VESA DDC 1 and DDC2;
Analog RGB interface for plug compatibility with CRT monitors.
CRT monitors are used for electronic displays among many other applications. However, with growing international calls for environmentally friendly products, greater demand is expected for TFT color LCD monitors, thanks to the space and energy savings they offer, and reduced user eye strain.

In an LCD display, in addition to the CRT interface input signal, a dot-clock signal is necessary for operation, and a separate circuit for generating that signal is also necessary. Moreover, an interface capable of supporting multiscanning while also supporting the different combinations of video signals and synchronization signals already used by existing CRT monitors, is necessary.

This new board has been developed to meet these needs, and through the use of its unique synchronization signal separation gate array and wide-range PLL (Phase Locked Loop), together with a control microprocessor, it is capable of identifying the input signal and generating a dot-clock signal that corresponds to it.
Hope this helps you a bit Exipnos
Click to expand...
 
#30
why lucky?

uvodee-

Thanks for the technical details but I am afraid its over my head.

What I got out of the article is that, NEC has developed this CRT interface board that could be used with LCD. It is to be included with lcd panels and not sold separately. This is the board that is included on my panel.

But I am still not sure on what the end result is. Do I need additional boards to make this work. You previously mentioned the the spectra cards.

Ywh's panel has a differnet lcd but seem to have the same crt interface board. But in addition to that it also has an additional board.

I still at a loss here. Any help apreciated.

Exipnos.
 
#31
thinking...

No i am not an engineer, I just try to think a lot.......
i have a ph d in global economics since 1984 but in the US they don't like me so i work as a cashier in a 7-11 hehehe.

ANyway, I think that the crt conversion should be enough to get the thing going no?
 
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