Patent ID: 8879010

Claim:
A display device comprising: a first transistor, one of a source electrode and a drain electrode of the first transistor being connected to be supplied with a common potential; and a plurality of pixels provided in a matrix, the plurality of pixels each comprising one or more units, each unit comprising a plurality of subunits, wherein the plurality of subunits each comprise: a second transistor, one of a source electrode and a drain electrode of the second transistor being electrically connected to a source line; and a liquid crystal element electrically connected to another of the source electrode and the drain electrode of the first transistor and another of the source electrode and the drain electrode of the second transistor, wherein each of the first transistor and the second transistor comprises an oxide semiconductor layer, and wherein an off current per micrometer of a channel width of each of the first transistor and the second transistor is lower than 100 zA/μm at 85° C. in a range of a voltage for driving liquid crystal molecules of the liquid crystal element.