Sharp 8.4" LCD

xriverfalconx · Post by **xriverfalconx** » Wed Nov 23, 2005 1:26 am

I purchased one of these screens as a good possiblility for portabale creations. I located the pinouts for it and this is what came up:

Code: Select all

Pin # Symbol Function 
1 R0 Red Data single (LSB) 
2 GND Ground 
3 R1 Red Data single  
4 VSync Vertical Sync Signal 
5 R2 Red Data single  
6 HSync Horizontal Sync Signal 
7 R3 Red Data single (MSB) 
8 GND Ground 
9 GND Ground 
10 CK Clock Signal for sampling data 
11 G0 Green Data Signal (LSB) 
12 GND Ground 
13 G1 Green Data Signal  
14 TST Should be opened during use 
15 GND Ground 
16 TST Should be opened during use 
17 G2 Green Data Signal  
18 GND Ground 
19 G3  Green Data Signal (MSB) 
20 GND Ground 
21 GND Ground 
22 Vcc +5 Volt Power Supply 
23 B0 Blue Data Signal (LSB) 
24 Vcc +5 Volt Power Supply 
25 B1 Blue Data Signal 
26 TST Should be opened during use 
27 GND Ground 
28 ENAB Data Enable Signal 
29 B2 Blue Data Signal 
30 GND Ground 
31 B3 Blue Data Signal (MSB)

For power, I'm sure pin 24 can get connected to a resistor (same one as snes should be good) as well as pin 21 for the ground.

How can I get the backlight connected so that turns on?
How do you think I can connect this so I get either a composite, s-video, etc connection?

I won't be able to try this til tomorrow because I'm home sick right now =(.

opadave2000 · Post by **opadave2000** » Wed Nov 23, 2005 9:22 am

Your pinout looks like an LVDS interface. It would take an adapter board to make it work with anything. There several available with docs posted on the web. Do a search for "vga to lvds", "ntsc to lvds" adapter or something similar. EIO was carrying the Cheetah board for a while. Most of the sites have compatibility lists as well. Hope this helps and good luck!

Foxx373 · Post by **Foxx373** » Wed Nov 23, 2005 9:28 am

Indeed, that screen could be VGA compliant, but if it also looks like it has a pure digital side. I agree with Opadave, you will need an adapter, or some kind of signal encoder to get it working. Any idea what the screen was originally from?

xriverfalconx · Post by **xriverfalconx** » Wed Nov 23, 2005 10:01 am

I looked into this screen more (which came from a Compaq CONTURA 410CX). It's a color screen and it's capable of getting VGA/NTSC connections, however, I need the controller board for this...damn!!!

I already looked through ebay, nothing there except for the laptop itself, however, that version available is a green screen...no good for me. What's this adapter board you are talking about that I can create? or purchase?

demonofaj · Post by **demonofaj** » Wed Nov 23, 2005 3:54 pm

I hear that laptop screens take VGA meaning that a lot of consoles don't support VGA.

Foxx373 · Post by **Foxx373** » Thu Nov 24, 2005 12:38 am

if it came from a laptop, its going to be one hell of a task to get it working. Im not saying it cant be done, but you might be better off using something easier to work with. i dont think you can buy an adapter. dont take my word for it, though.