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Re-using 7" tft lcd screen from old dvd player
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skematic:
Recently I've got a hold of an old but working portable dvd player LG DP450. I intend to use the lcd screen as a display for raspberry pi.

What I found inside is a 7" LG lb070w02 tft lcd screen (datasheet). From what I understand from the schematics in the service manual, the main mcu MT1389L (datasheet) is driving this LCD directly, and sadly this chip doesn't have a video-in pin.

I've looked on google for driver boards for this lcd, however there seems to be none available. I'm really interested making this LCD work, but not sure what to do next. I hope someone can help me out.
In Vacuo Veritas:
What you do next is you bring it to the e-waste center and buy this
https://www.ebay.ca/itm/5-inch-HDMI-Touch-Screen-TFT-LCD-Panel-Module-Shield-800X480-For-Raspberry-Pi/311872272215?hash=item489d093757:g:S7cAAOSw2ENW63YF:rk:3:pf:0
skematic:

--- Quote from: In Vacuo Veritas on December 13, 2018, 01:30:50 pm ---What you do next is you bring it to the e-waste center and buy this
https://www.ebay.ca/itm/5-inch-HDMI-Touch-Screen-TFT-LCD-Panel-Module-Shield-800X480-For-Raspberry-Pi/311872272215?hash=item489d093757:g:S7cAAOSw2ENW63YF:rk:3:pf:0

--- End quote ---

That'd be an easy (and expensive) way out, however I think it would be an interesting project to get this LCD working (or die trying). I'd imagine I need at least another driver IC for this LCD to convert RPi's composite video signal. Do these exist for this particular lcd's interface? Or should I try to write my own driver with say a STM32F103C8T6?
cdev:
I don't know if the newer Pis still support a composite video out (320x240 ish) like some of the lower res displays still use.

But the older Pis do.  Its very hard to read smaller text on them so you will likely be limited to maybe 40 characters, but if you can live with that its okay.

Even cheaper TFT displays that use SPI or i2c are out there for just a few dollars which would be sharper and cheaper.
In Vacuo Veritas:
Well, you could fool around until Halley's Comet shows up again... or just get a screen that works.
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