Display device
View Patent ↗According to one embodiment, a display device includes a plurality of pixels each including a plurality of subpixels, each subpixel including a luminescent element, a plurality of scanning lines, a plurality of image signal lines, a plurality of reset power source lines, a first power source line, a scanning line driving circuit and a signal line driving circuit, wherein at least one subpixel comprises an output switch, a driving transistor, a retaining capacitance, a pixel switch and a reset switch, and the output switch is shared with a plurality of subpixels included in at least one pixel.
1. A display device comprising:
a plurality of pixels arranged in a matrix on a substrate;
a plurality of first scanning lines arranged along a first direction;
a plurality of second scanning lines arranged along the first direction;
a plurality of image signal lines arranged along a second direction which intersects the first direction;
a plurality of reset power source lines arranged along the first direction or the second direction; and
a first power source line,
each of the plurality of pixels comprising:
a first subpixel;
a second subpixel which is adjacent to the first subpixel along the first direction or the second direction;
an output switch of which first terminal is connected to the first power source line and of which control terminal is connected to one of the plurality of first scanning lines; and
a reset switch having a first terminal and a second terminal, wherein the first terminal is connected to one of the plurality of reset power source lines,
each of the first subpixel and the second subpixel comprising:
a luminescent element;
a driving transistor of which first terminal is connected to a second terminal of the output switch and of which second terminal is connected to one electrode of the luminescent element;
a retaining capacitance connected between a control terminal and the second terminal of the driving transistor; and
a pixel switch of which first terminal is connected to the control terminal of the driving transistor, of which second terminal is connected to one of the plurality of image signal lines, and of which control terminal is connected to one of the plurality of second scanning lines,
wherein the reset switch is included in a pair of the first subpixel and the second subpixel, and
the second terminal of the reset switch is connected to the second terminal of the driving transistor of the first subpixel, and is not connected to the second terminal of the driving transistor of the second subpixel.
2. The display device of claim 1 , wherein
each of the reset switch, the output switch, and the pixel switch comprises a transistor.
3. The display device of claim 1 , further comprising:
a third subpixel; and
a fourth subpixel which is adjacent to the third subpixel along the first direction or the second direction,
each of the third subpixel and the fourth subpixel comprising:
a luminescent element;
a driving transistor of which first terminal is connected to the second terminal of the output switch and of which second terminal is connected to one electrode of the luminescent element;
a retaining capacitance connected between the control terminal and the second terminal of the driving transistor; and
a pixel switch of which first terminal is connected to the control terminal of the driving transistor, of which second terminal is connected to one of the plurality of image signal lines, and of which control terminal is connected to one of the plurality of second scanning lines, wherein
the first subpixel, the second subpixel, the third subpixel and the fourth subpixel are arranged in a matrix in each of the plurality of pixels.
4. The display device of claim 3 ,
the second terminal of the reset switch is connected to the second terminal of the driving transistor of the first subpixel, and is not connected to the second terminals of the driving transistors of the second, third and fourth subpixels.
5. The display device of claim 3 , wherein
each of the reset switch, the output switch, and the pixel switch comprises a transistor.
6. A display device comprising:
a plurality of pixels arranged in a matrix on a substrate;
a plurality of first scanning lines arranged along a first direction;
a plurality of second scanning lines arranged along the first direction;
a plurality of image signal lines arranged along a second direction which intersects the first direction;
a plurality of reset power source lines arranged along the first direction or the second direction; and
a first power source line,
each of the plurality of pixels comprising:
a first subpixel;
a second subpixel which is adjacent to the first subpixel along the first direction or the second direction;
an output switch of which first terminal is connected to the first power source line and of which control terminal is connected to one of the plurality of first scanning lines; and
a reset switch of which first terminal is connected to one of the plurality of reset power source lines,
each of the first subpixel and the second subpixel comprising:
a luminescent element;
a driving transistor of which first terminal is connected to a second terminal of the output switch and of which second terminal is connected to one electrode of the luminescent element;
a retaining capacitance connected between a control terminal and the second terminal of the driving transistor; and
a pixel switch of which first terminal is connected to the control terminal of the driving transistor, of which second terminal is connected to one of the plurality of image signal lines, and of which control terminal is connected to one of the plurality of second scanning lines, wherein
the reset switch is included in a pair of the first subpixel and the second subpixel, and
a second terminal of the reset switch is connected to the first terminal of the driving transistor of the first subpixel and the first terminal of the driving transistor of the second subpixel.
7. The display device of claim 6 , wherein
each of the reset switch, the output switch, and the pixel switch comprises a transistor.
8. The display device of claim 6 , further comprising:
a third subpixel; and
a fourth subpixel which is adjacent to the third subpixel along the first direction or the second direction,
each of the third subpixel and the fourth subpixel comprising:
a luminescent element;
a driving transistor of which first terminal is connected to the second terminal of the output switch and of which second terminal is connected to one electrode of the luminescent element;
a retaining capacitance connected between the control terminal and the second terminal of the driving transistor; and
a pixel switch of which first terminal is connected to the control terminal of the driving transistor, of which second terminal is connected to one of the plurality of image signal lines, and of which control terminal is connected to one of the plurality of second scanning lines, wherein
the first subpixel, the second subpixel, the third subpixel and the fourth subpixel are arranged in a matrix in each of the plurality of pixels.
9. The display device of claim 8 , wherein
the second terminal of the reset switch is connected to the first terminal of the driving transistor of the first subpixel, the first terminal of the driving transistor of the second subpixel, the first terminal of the driving transistor of the third subpixel, and the first terminal of the driving transistor of the fourth subpixel.
10. The display device of claim 8 , wherein
each of the reset switch, the output switch, and the pixel switch comprises a transistor.