Display device

A display device, comprising:

• a plurality of subpixels disposed in a display area and including a first subpixel and a second subpixel;
• and
• a plurality of dummy subpixel circuits disposed in a non-display area,
• wherein the first subpixel includes a first light emitting element and a first subpixel circuit,
• wherein the second subpixel includes a second light emitting element and a second subpixel circuit,
• wherein the first light emitting element and the first subpixel circuit are electrically disconnected from each other and the second light emitting element and the second subpixel circuit are electrically disconnected from each other, and
• wherein the plurality of dummy subpixel circuits includes a first dummy subpixel circuit electrically connected to the first light emitting element and a second dummy subpixel circuit electrically connected to the second light emitting element,
• wherein the first dummy subpixel circuit includes a first transistor for supplying a driving current, a second transistor for allowing the driving current from the first transistor to flow, a first node located in a path through which the driving current passing through the second transistor flows, a third transistor for transferring a signal from a first dummy signal line to the first node, a repair transistor for allowing the driving current passing through the first node to flow, and a second node located between the repair transistor and a dummy connection control line connected to the first light emitting element, the driving current passing through the repair transistor flowing through the dummy connection control line, and
• wherein the repair transistor is selectively turned on or off at the same time as the second transistor.

A display device, comprising:

• a display area including a plurality of subpixels, wherein each subpixel comprises:
• a subpixel circuit;
• a light emitting element, wherein the subpixel circuit and the light emitting element are electrically disconnected from each other prior to defect correction;
• a non-display area including a plurality of dummy subpixel circuits;
• a dummy connection control line extending across the display area and the non-display area, the dummy connection control line disposed adjacent to the plurality of subpixel circuits and the plurality of dummy subpixel circuits;
• wherein, upon a defect occurring in a subpixel circuit of the plurality of subpixel circuits, the dummy connection control line is configured to establish an electrical connection between a dummy subpixel circuit in the non-display area and the light emitting element of a subpixel having the defect,
• wherein the dummy subpixel circuit includes a first transistor for supplying a driving current, a second transistor for allowing the driving current from the first transistor to flow, a first node located in a path through which the driving current passing through the second transistor flows, a third transistor for transferring a signal from a first dummy signal line to the first node, a repair transistor for allowing the driving current passing through the first node to flow, and a second node located between the repair transistor and the dummy connection control line connected to the light emitting element of a subpixel having the defect, the driving current passing through the repair transistor flowing through the dummy connection control line, and
• wherein the repair transistor is selectively turned on or off at the same time as the second transistor.

A method for repairing a defective subpixel in a display device, the method comprising:

• detecting a defect in a subpixel circuit of a first subpixel disposed in a display area of the display device;
• electrically disconnecting the defective subpixel circuit from a light emitting element of the first subpixel;
• and
• electrically connecting a dummy subpixel circuit disposed in a non-display area of the display device to the light emitting element of the first subpixel via a dummy connection control line,
• wherein the dummy subpixel circuit includes a first transistor for supplying a driving current, a second transistor for allowing the driving current from the first transistor to flow, a first node located in a path through which the driving current passing through the second transistor flows, a third transistor for transferring a signal from a first dummy signal line to the first node, a repair transistor for allowing the driving current passing through the first node to flow, and a second node located between the repair transistor and the dummy connection control line connected to the light emitting element of the first subpixel, the driving current passing through the repair transistor flowing through the dummy connection control line, and
• wherein the repair transistor is selectively turned on or off at the same time as the second transistor.