Patent ID: 9454928
Filing Date: 2016-09-27
CPC Classification: G02B,G09G,H01L,H04B

Claim Text:
1. A pixel circuit disposed at intersection of a scanning line and a signal line, the pixel circuit comprising: an electro-optical element; a holding capacitor; a switching transistor; and a drive transistor, wherein an input signal from said signal line is sampled into said holding capacitor, a drive current is applied to said electro-optical element through said switching transistor and said drive transistor depending on the input signal held by said holding capacitor, said drive transistor having a threshold voltage that is imparted to said holding capacitor in association with the input signal being sampled into said holding capacitor, a first reference potential is provided at a source node of said drive transistor through a first detection transistor prior to an emission period, and a second reference potential is provided at a gate node of said drive transistor through a second detection transistor prior to said emission period, wherein said holding capacitor holds a voltage between said source node and said gate node of said drive transistor, and wherein said first reference potential is provided at a first node of said holding capacitor, said second reference potential is provided at a second node of said holding capacitor, and the difference between said first reference potential and said second reference potential is greater than the threshold voltage of said drive transistor.