Patent ID: 7808535
Filing Date: 2010-10-05
Classification: G01N,G01T,H04N

Abstract:
1. A semiconductor device comprising: a pixel portion comprising a first transistor; a first line; a second transistor, a third transistor; a capacitor element; a fourth transistor; a fifth transistor; a sixth transistor; and second line; wherein one terminal of a source terminal and a drain terminal of the first transistor is electrically connected to the first line, wherein one terminal of a source terminal and a drain terminal of the second transistor is electrically connected to the first line, and the other terminal of the second transistor is electrically connected to a first power source, wherein one terminal of a source terminal and a drain terminal of the third transistor is electrically connected to the first line, the other terminal of the third transistor is electrically connected to a first electrode of the capacitor element, and a second electrode of the capacitor element is electrically connected to the first power source, wherein one terminal of a source terminal and a drain terminal of the fourth transistor is electrically connected to the first electrode of the capacitor element, and the other terminal of the fourth transistor is electrically connected to the second electrode of the capacitor element and the first power source, wherein one terminal of a source terminal and a drain terminal of the fifth transistor is electrically connected to the first electrode of the capacitor element, and the other terminal of the fifth transistor is electrically connected to the second line, and wherein one terminal of a source terminal and a drain terminal of the sixth transistor is electrically connected to the first power source, and the other terminal of the sixth transistor is electrically connected to the second line.