Patent ID: 8508518

Claim:
A display apparatus comprising: a pixel circuit including a storage capacitor configured to store information corresponding to an image signal, a sampling transistor configured to write the information corresponding to an image signal into the storage capacitor, a driving transistor configured to produce a driving current whose magnitude corresponds to a voltage stored in the storage capacitor, M electro-optical elements connected to an output terminal of the driving transistor, where M is an integer greater than 1, and N test transistors, where N is an integer less than M, wherein each of the N test transistors is configured to selectively control current flowing between a corresponding one of the M electro-optical elements and a current path to the output terminal of the driving transistor, and wherein at least one of the M electro-optical elements is not configured to have a corresponding test transistor that selectively controls current flowing between the at least one of the M electro-optical elements and a current path to the output terminal of the driving transistor.