Finance Asia has an interesting story on how PVI got the money to buy E-ink Corporation. From the article:
If you've embraced e-books, chances are your carry-on luggage is a kilo or two lighter and the frequency of your recreational reading has increased because you're no longer bound by when you can get to a bookshop. It takes seconds to download a book, and so you do. If you own one of Sony's E-Readers or the Kindle, you owe a thank you to Credit Suisse.
FYI: Prime View International (PVI) is the primary manufacturer for E-ink. E-ink is a R&D company in Massachusetts that originally developed the technology (and continues to develop it), which they then licensed to PVI. Basically, PVI bought out their business partner.