Yea, I hear you...I also just bought a used Sony Flip 15 inches screen recently.
Since Sony sold VAIO and they became independent, i think SONY contracted BestBuy for repair and another company names Encompass for parts, if I am not mistaken, other people perhaps can confirm that.
By the way, i found this on youtube about yr 13 inches Flip, they showed you how it looks inside so that you can have an idea, it's quite educational and informative:
https://www.youtube.com/watch?v=TNa8dJtcVbw
Hope it helps,
By th way, I don't work for SONY here, just another guy who also have computer problems and come here, i guess we all come together to ask for help; other times just try to help...