Patent ID: 9245478
Filing Date: 2016-01-26
CPC Classification: G09G,H04N

Claim Text:
1. An electro-optical device, comprising: a pixel circuit that includes a driving transistor; a light-emitting element; a voltage limiter circuit, the voltage limiter circuit being a diode, a cathode of the diode being connected to a point of junction of the driving transistor and the light-emitting element and the other terminal of the diode being connected to a feeder line for a predetermined voltage level; wherein the driving transistor allows an electric current that is dependent on a voltage between a gate of the driving transistor and a source of the driving transistor to flow through the light-emitting element, the light-emitting element emits a light at a luminance that is dependent on the electric current, and the voltage limiter circuit performs voltage limiting in such a way as to ensure that a voltage between the drain of the driving transistor and the source of the driving transistor does not exceed a predetermined value; a first element located outside of a display area, wherein the first element acquires a threshold voltage of the light-emitting element; and a second element located outside of the display area, wherein the second element acquires a threshold voltage of the diode, wherein a bias voltage applied to the diode is determined from the threshold voltage of the light-emitting element and the threshold voltage of the diode acquired by the first and second elements located outside of the display area, and wherein a potential that is equal to sum of a voltage that is based on a level of a voltage that is applied to one of two terminals of the light-emitting element, a threshold voltage of the light-emitting element, and a threshold voltage of the diode is applied to the feeder line, and the one of two terminals is a point that is not connected to the driving transistor.