A display device includes a display panel on which a plurality of sub-pixels are disposed; a timing controller configured to transmit an image control signal to a host system to receive image data from the host system; a data driving circuit configured to convert the image data transmitted from the timing controller into a data voltage and configured to supply the data voltage to the display panel; and a semi-off switching circuit configured to control the image control signal so that the image data is cut off from the host system during a semi-off period of a predetermined time from a time when an off monitoring signal is transmitted from the host system in response to the power off signal.

A display device includes a display panel on which a plurality of sub-pixels are disposed; a timing controller configured to transmit an image control signal to a host system to receive image data from the host system; a data driving circuit configured to convert the image data transmitted from the timing controller into a data voltage and configured to supply the data voltage to the display panel; and a semi-off switching circuit configured to control the image control signal so that the image data is cut off from the host system during a semi-off period of a predetermined time from a time when an off monitoring signal is transmitted from the host system in response to the power off signal.

A pixel circuit and a display device including the same are disclosed. The pixel circuit of this disclosure includes a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a second electrode connected to a third node, and configured to supply an electric current to a light emitting element; a first switch element configured to be turned on according to a gate-on voltage of a scan pulse to supply a data voltage to the second node; and a second switch element configured to be turned off according to a gate-off voltage of a light emitting control pulse generated in antiphase of the scan pulse.

A pixel circuit and a display device including the same are disclosed. The pixel circuit of this disclosure includes a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a second electrode connected to a third node, and configured to supply an electric current to a light emitting element; a first switch element configured to be turned on according to a gate-on voltage of a scan pulse to supply a data voltage to the second node; and a second switch element configured to be turned off according to a gate-off voltage of a light emitting control pulse generated in antiphase of the scan pulse.

A pixel circuit and a display panel including the same are disclosed. The pixel circuit may include a driving element including a gate connected to a first node to which a data voltage is configured to be applied, a first electrode connected to a high-potential voltage line, and a second electrode connected to a second node; a first switch element connected between the second node and a third node; a second switch element connected between the second node and a fourth node; a third switch element connected between the fourth node and a reference voltage line; a first capacitor connected between the first node and the third node; and a second capacitor connected between the third node and the fourth node.

A pixel circuit and a display panel including the same are disclosed. The pixel circuit may include a driving element including a gate connected to a first node to which a data voltage is configured to be applied, a first electrode connected to a high-potential voltage line, and a second electrode connected to a second node; a first switch element connected between the second node and a third node; a second switch element connected between the second node and a fourth node; a third switch element connected between the fourth node and a reference voltage line; a first capacitor connected between the first node and the third node; and a second capacitor connected between the third node and the fourth node.

A pixel circuit and a display device including the same are disclosed. The pixel circuit includes a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a third electrode connected to a third node; a light emitting element including an anode electrode connected to the third node, and a cathode electrode to which a pixel ground voltage supply voltage is applied; a first switch element configured to supply a data voltage to the second node in response to a scan pulse; and a second switch element configured to supply a first initialization voltage set to a negative voltage that is less than the pixel ground voltage supply voltage to the third node in response to a first initialization pulse.

To suppress degradation of a transistor. A method for driving a liquid crystal display device has a first period and a second period. In the first period, a first transistor and a second transistor are alternately turned on and off repeatedly, and a third transistor and a fourth transistor are turned off. In the second period, the first transistor and the second transistor are turned off, and the third transistor and the fourth transistor are alternately turned on and off repeatedly. Accordingly, the time during which the transistor is on can be reduced, so that degradation of characteristics of the transistor can be suppressed.

A pixel circuit and a display device including the same are disclosed. The pixel circuit includes a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a second electrode connected to a third node, and configured to supply an electric current to a light emitting element; a first switch element discharging the second node; and a second switch element configured to supply a data voltage to the second node. The light emitting element and the first switch element are commonly connected to a VSS node to which a low-potential power supply voltage is applied.

A pixel circuit and a display device including the same are disclosed. The pixel circuit includes a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a second electrode connected to a third node, and configured to supply an electric current to a light emitting element; a first switch element discharging the second node; and a second switch element configured to supply a data voltage to the second node. The light emitting element and the first switch element are commonly connected to a VSS node to which a low-potential power supply voltage is applied.