G - Physics
11
C
345/5, 345/8
G11C 11/42 (2006.01) G02F 1/1365 (2006.01) G09G 3/36 (2006.01) H01L 27/08 (2006.01)
Patent
CA 1181513
11 ABSTRACT In order to provide a passive electro-optical display medium in a matrix display device with sufficiently steep threshold with respect to the applied voltage and with a memory, a switching element is palced in series with each picture element. The switching element is provided between a picture electrode of each picture element and a driving electrode. The switching element is formed by a polysilicon island in which n+-doped regions are provided which are separated by a p-doped region. As a result of this, two series-arranged, oppositely directed p-n junctions are formed of which always one is reversely biased. The width of the p-doped regions is so samll that punch- through occurs between the two p-n junctions before one of the p-n series resistance of the switching element is negligibly small so that a favourable Ronn/Roff ratio obtained and the picture elements can be driven with comparatively low voltages.
407376
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
LandOfFree
Display device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display device will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1202441