Light-emitting device with improved brightness control and narrow frame and electronic apparatus with the light-emitting device
The invention provides a light-emitting device and an electronic apparatus, which are capable of preventing reduction of the amount of current flowing through light-emitting elements and which have an excellent display characteristic. Cathode wiring lines connected to a cathode are provided to surround an effective area outside the effective area where a plurality of pixels having light-emitting elements are provided. First to third power source lines connected to pixel electrodes are provided between the cathode wiring lines and the effective area.
1. A light emitting device comprising:
a base having a main face;
a pixel electrode disposed above the main face of the base, the pixel electrode being disposed in a display region of the main face which is a region when viewed from a direction perpendicular to the main face;
a counter electrode that is disposed above the main face opposite to the pixel electrode;
a light emitting element that is disposed between the pixel electrode and the counter electrode, the light emitting element emitting a light in response to a current;
a power source line to supply the current to the light emitting element;
a counter electrode line electrically connected to the counter electrode; and
a test circuit to detect a defect of the light emitting device, the test circuit being disposed outside of the display region when viewed from a direction perpendicular to the main face, at least a part of the test circuit overlapping with the counter electrode.
2. The light emitting device according to claim 1 , the test circuit being positioned between the display region and the counter electrode line when viewed from a direction perpendicular to the main face.
3. The light emitting device according to claim 1 , the test circuit being positioned between the display region and the power source line when viewed from a direction perpendicular to the main face.
4. The light emitting device according to claim 1 , further comprising:
a scanning line;
a data line intersecting the scanning line;
a driving transistor being electrically connected between the power source line and the pixel electrode; and
a switching transistor being electrically connected between a gate of the driving transistor and the data line.
5. The light emitting device according to claim 4 , the driving transistor controlling a current level of the current supplied to the light emitting element.