Giuliano

Hey all,

I've been planning on putting a CarPC in my 2003 WRX Wagon, with a LCD in the double-din, for MP3/Navigation.

I've been doing research on what type of an LCD might be the best for my application, and I've been picky about what I want - widescreen, high resolution (800x480 or 800x600), high brightness, and preferably a VGA or LVDS interface.

Most of the screens I looked at were either too big (8.4"+), too small, (~6"), were too low of a resolution (640x480), or were video-only (not VGA/LVDS).


I didn't want to have to take a Xenarc or a Liliput and tear it apart to get the bare LCD and parts, and I didn't want to have to get a kit (like DWW's).


I found this 7" LCD from Toppoly:

http://www.toppoly.com/toppoly/Product/TD070WGCB1.asp

Features:

• Wide VGA resolution (854x480)

• Supports NTSC/PAL/SECAM TV and VGA standard (possibly LVDS?)

• Supports picture rotation in U/D and L/R directions

• High brightness (420 cd/m2)

• Aspect ratio (16:9)

More details:

http://www.toppoly.com/Toppoly/tw/Pr...TD070WGCB1.asp
http://www.toppoly.com/toppoly/Produ...TD070WGCB1.asp
(PDF) http://www.toppoly.com/Toppoly/Suppo...inch_Final.pdf

The System Block Diagram link above (1st of 3) seems to indicate that the LCD might have a LVDS interface.


The company's web site indicates that sample quantities are available, and production is set for right around now.


I have no idea how much they're asking, or whether they'll sell, but the specs look highly interesting.

Any thoughts?

MP3Car.com

 

bosstone74

I think we need price!

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nthai

That LCD looks nice.
I'd buy it if the price is right.

Giuliano

I sent an e-mail to a sales person at the company, which is in Taiwan.

I'll see what they say about sales, pricing, and any technical specifications, if any.

Since it's a new product, they may be working on getting US distributors, so that may be an option.


Most of the other 7" widescreen LCD's I've seen have a much lower resolution, listed as 1440x230, but in reality it's physically 480x230.. way too low.


We'll see, I'll keep things updated here.

imprezive one

Just tacking myself on here to keep updated. :] Nice find.

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Giuliano

This company has the LCD listed:

http://www.lcdinline.com/products/tftlcd.htm


I sent them an e-mail inquiry about sample quantity availability..

dominic

this screen looks good if its not to expensive....

has anyone found a 7inch transflective tft pannel? if they have id definatly buy one - as the screen would only get more readable with direct sunlight..........

antimatter

Has anyone found a price. It would need a touch screen overlay kit but that is no biggy

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MP3Car.com

 

Giuliano

The fact that this is a fairly new model of LCD (production set for Q1-2004, or around now), it may be some time before LCD distributors will carry it, and hence, a lack of posted prices.


I'm waiting on replies from Toppoly themselves, and LCDInline, mentioned earlier.

-Giuliano

Giuliano

Also, a LCD from Sharp with similar specs:

LQ070Y5DG02
7" diagonal
800 x RGB x 480 dot format
0.195 x 0.174 pixel pitch
156.0 x 83.3 viewable area
6-bit digital RGB input system (lvds, 18-bit?)
6-bit digital (lvds, 18-bit?)
1 CCFT backlight
380 NITS / cdm/2
4700 milliwatts consumption (4.7 watts?)
193.3 x 116.5 x 8.8 overall dimensions (mm)

From spec sheet:
http://sharp-world.com/products/devi...table/006.html

I believe this is also a relatively new model as well.


Edit again:

This place lists the LCD's, but they won't sell to individuals:
http://www.solar-technologies.com/re...p?part_id=4091

If you go to to request info, they have:

"Regrettably, we cannot support small quantity inquiries from INDIVIDUAL users for personal use."

Giuliano

I sent an e-mail to Earth LCD inquiring about availability and pricing.

I have no idea on pricing as of yet, but my guess would be in the several hundred-dollar range ($300-500).

Anyhow, that's only a guess.

slffl

Nice, I'm hoping some other alternatives to the Xenarc and Lilliputs will come out soon.

Giuliano

Keep in mind, these are bare LCD's, not packaged LCD's like the Xenarcs or Liliputs..

"Some Assembly Required" is the phrase.


May or may not come with controller cards, inverters, power supply or cables...

Giuliano

A few more part numbers for other widescreen LCD's with similar specs:

Brand AU Optronics
Part Number A070VW01
Size (in.) 7.00
LCD Type TFT
Resolution 800X480
cd/m² 400
http://www.auo.com/english/products/...&product_id=50


Brand Hitachi
Part Number TX18D11VM1CAA
Size (in.) 7.00
LCD Type TFT
Resolution 800X480
cd/m² 400
http://www.japantft.com/products/Hit...8D11VM1CAA.htm
http://www.hitachi-displays.com/catalog/skg-228-e.html

Brand Hitachi
Part Number TX18D16VM1CAA
Size (in.) 7.00
LCD Type TFT
Resolution 800X480
Other
cd/m² 350
http://www.hitachi-displays.com/cata...6VM1CAA-e.html

Brand Hitachi
Part Number TX20D16VM2BAA
Size (in.) 8.00
LCD Type TFT
Active Area 174.0(H) x 104.4(V)
Resolution 800X480
http://www.hitachi-displays.com/cata...6VM2BAA-e.html
(PDF) http://hitachi-displays-eu.com/menu/brochure1103.pdf

Brand Hitachi
Part Number TX20D16VM1CAA
Size (in.) 8.00
LCD Type TFT
Resolution 800X480
Active Area 174.0(H) x 104.4(V) mm
cd/m² 400
http://www.hitachi-displays.com/cata...6VM1CAA-e.html

Pay special attention to this last two LCDs - the Hitachi 8" TX20D16VM2BAA /TX20D16VM1CAA.

The active area dimensions are EXACTLY the same size as a WRX's double-din opening! The double-din opening measures 174mm wide, and 100mm tall.


These are all new-model LCD's however, so availability might take a while.
The second Hitachi 8" LCD is listed as being "in development".

Also, the interfaces are listed as "C-MOS 6-bit Digital RGB", so I'm not sure if that's LVDS or requires a controller.. but 6 bits x 3 (RGB) is 18-bits, so it might be LVDS.

Edit: I sent an e-mail to Japan-TFT.com about the Hitachi 8" TX20D16VM2BAA LCD.

Giuliano

This post is primarily for my own reference, but thought others might find it interesting.

I've been looking for an LCD with an LVDS interface, so I can hook it up directly to a board like this, which has a LVDS transmitter.

http://www.commell-sys.com/Product/SBC/LV-671.HTM


Problem is, the Hitachi 8" ones above are CMOS interface, not LVDS.


Normally, this requires an expensive LVDS receiver.. but all it really is is a single chip, like this:

http://www.national.com/ds/DS/DS90CF561.pdf

The application diagram on the first page is interesting, but the rest is mostly technical.

Edit: The receiver chip is self-contained, no external support chips required, and is Only $7 for one.

References:
http://www.digikey.com/scripts/dksea...D%2DND&site=us
http://www.national.com/pf/DS/DS90CF364A.html

Now, I have some electronics engineering experience, so I figure it probably wouldn't be too hard to design a small LVDS receiver module for CMOS LCD's like this.

And with PCB production services like this, it wouldn't be too expensive:

http://www.expresspcb.com/ExpressPCB...sMiniboard.htm

The boards themselves would probably be only around $20, and with the parts, maybe $40-50.

Just some random thoughts.

MP3Car.com