A method for manufacturing a display apparatus including a display device, a circuit device which supplies a driving current to the display device and a selecting circuit for regulating the drive current of the circuit device into a plurality of steps of current values. The display apparatus is...http://www.google.com/patents/US5724055?utm_source=gb-gplus-sharePatent US5724055 - Display apparatus and method of manufacture in which display luminance can be adjusted 
