Patent ID: 8085226

Claim:
A semiconductor device comprising: a circuit for supplying voltage and current; a current memory circuit; and a pixel, wherein the circuit for supplying voltage and current is configured to supply a first current corresponding to a display to the current memory circuit, and to supply a voltage corresponding to the display to the pixel, wherein the current memory circuit is configured to supply a second current proportionate to the first current to the pixel, wherein the current memory circuit comprises a transistor, a capacitor, a first switch, and a second switch, wherein a first terminal of the first switch is connected with a current output terminal of the circuit for supplying voltage and current, wherein a second terminal of the first switch is connected with a first electrode of the capacitor and with a gate of the transistor, wherein a first terminal of the transistor is connected with a second electrode of the capacitor, wherein the first terminal of the first switch is connected with a first terminal of the second switch, wherein a second terminal of the second switch is connected with a second terminal of the transistor, and wherein the second terminal of the transistor is connected with the pixel.