An object of the invention is to provide an organic EL display apparatus using an organic EL device capable of light emission to a high luminance at a relatively low voltage so that the apparatus is prevented from erroneous light emission and a drop of contrast and features a high operating speed. The...http://www.google.de/patents/US6369507?utm_source=gb-gplus-sharePatent US6369507 - Organic EL display apparatus with a switching device
