Patent ID: 7898623

Claim:
A display device comprising: a first region and a second region each emitting a first color over a first substrate; a third region and a fourth region each emitting a second color over the first substrate; a fifth region, a sixth region and a seventh region each emitting a third color over the first substrate; and a memory electrically connected to the first region, the second region, the third region, the fourth region, the fifth region, the sixth region and the seventh region through a connecting board over a second substrate, wherein a pixel is consisting of the first region, the second region, the third region, the fourth region, the fifth region and the sixth region in a first state, wherein the pixel is consisting of the first region, the second region, the third region, the fourth region, the sixth region and the seventh region in a second state, wherein the pixel is configured to express a gray scale by selecting regions included in the pixel to emit light, wherein each of the first region, the second region, the third region, the fourth region, the fifth region, the sixth region and the seventh region comprises a first transistor, a second transistor, a storage capacitor, and a display element, wherein a gate of the first transistor is electrically connected to a first line, a first terminal of the first transistor is electrically connected to a second line, wherein a gate of the second transistor is electrically connected to a second terminal of the first transistor, a first terminal of the second transistor is electrically connected to the display element, and a second terminal of the second transistor is electrically connected to a third line, and wherein a first electrode of the storage capacitor is electrically connected to the second terminal of the first transistor and the gate of the second transistor, and second electrode of the storage capacitor is electrically connected to the third line.