mcginnis@kuhub.cc.ukans.edu (12/29/90)
Does anybody know where I can get an inexpensive LCD screen? The resolution does not have to be high (5x7 pixel characters is OK) and it does not have to be large (5 to 10 lines of 40 characters is OK). Please send me the vendor, part #, and anything else you have handy on it. Also, does anybody out there know how color LCD's work? I know that LCD's work by changing polarization of an internal film and that one can get colors from viewing various types of crystals under a polarized microscope... I assume that the mechanism is the same but I don't know what that mechanism is. Perhaps, when you have two polarizing films overlapping and rotated so that their axis of polarization are not parallel then the light would have to fit "through" the holes. Like the crossed slats of an ivy trellas. If the angle were small then longer wavelengths could fit through and with sharper angles the smaller wavelengths are all that can fit through. Am I on the right track?
josephc@nntp-server.caltech.edu (Joseph I. Chiu) (01/03/91)
mcginnis@kuhub.cc.ukans.edu writes: >Does anybody know where I can get an inexpensive LCD screen? The >resolution does not have to be high (5x7 pixel characters is OK) >and it does not have to be large (5 to 10 lines of 40 characters is OK). >Please send me the vendor, part #, and anything else you have >handy on it. >Also, does anybody out there know how color LCD's work? I know that >LCD's work by changing polarization of an internal film and that one >can get colors from viewing various types of crystals under a polarized >microscope... I assume that the mechanism is the same but I don't >know what that mechanism is. Actually, according to the Sharp LCD literature here.... There are three different pixels (RGB) for each "dot" on the screen, sort of like televisions. Best thing to do is to contact Hitachi and Sharp (two companies that seem to be "big" on LCD's - Epson and Optrex, also...) Look under the Thomas Register under Displays - Liquid Crystal. (Available at your local library) -- Joseph . -- -- josephc@coil.caltech.edu ...Just another lost soul in the universe