Patent ID: 9142593
Filing Date: 2015-09-22
Classification: G09G,H01L

Abstract:
1. A display device comprising: a connection portion; a first transistor comprising a first gate, a first source and a first drain; a second transistor comprising a second gate, a second source and a second drain; a third transistor comprising a third gate, a third source and a third drain; a first capacitor comprising a pair of electrodes; and a display element comprising a first electrode and a second electrode, wherein the first gate and the second gate are electrically connected to a first wiring, wherein one of the first source and the first drain is electrically connected to a second wiring, wherein the other of the first source and the first drain is electrically connected to one of the pair of electrodes of the first capacitor and the third gate, wherein one of the second source and the second drain is electrically connected to a third wiring, wherein the other of the second source and the second drain is electrically connected to the other of the pair of electrodes of the first capacitor, one of the third source and the third drain, and the first electrode of the display element, wherein the other of the third source and the third drain is electrically connected to a fourth wiring, wherein the first wiring, the second wiring, the third wiring and the fourth wiring are electrically connected to the connection portion, wherein the connection portion is configured to be attached to or detached from an external driver circuit which is configured to supply a video signal to the second wiring, wherein the first capacitor is configured to keep a voltage in accordance with the video signal which is supplied from the second wiring, and wherein the display element is configured to perform a display in accordance with the voltage kept in the first capacitor during a period in which the connection portion is not attached to the external driver circuit.