Patent ID: 7102202

Claim:
A display unit comprising: an organic light emitting diode (OLED) provided in correspondence with each of pixels and capable of emitting light by itself; a drive transistor for driving said OLED; and a twig transistor formed so as to have a drain electrode independently formed and closely placed in the vicinity of a drain electrode of said drive transistor so as to be exposed to a same source-gate voltage condition as the drive transistor, wherein said twig transistor shares a commom gate electrode and a common source electrode with said drive transistor, said drive transistor drain electrode configured to accommodate a current flow sufficient for driving said OLED in a drive state, and said twig transistor drain electrode configured to accommodate a much smaller current for facilitating detecting a threshold voltage (Vth) of said drive transistor with improved accuracy when the OLED drive current is sufficiently reduced in said drive state.