DISPLAY DEVICE
A display device can include a base, a plurality of pixels in a matrix along first and second directions intersecting each other in a display area on the base, control signal lines to supply a control signal to the pixels, and power supply lines to supply an initialization voltage to the pixels. Each pixel can include a pixel circuit having a plurality of transistors and a light emitting element drivable by the pixel circuit. The plurality of transistors can include a first transistor between the power supply line and the light emitting element. The first transistor can be controlled based on the control signal. The control signal lines, which can extend to connect to the plurality of pixels, can be arranged in the second direction. The power supply lines, which can extend to connect to the plurality of pixels, can be arranged in the first direction.
1 . A display device, comprising:
a base;
a plurality of pixels in a matrix along first and second directions intersecting each other in a display area on the base, the first direction being perpendicular to the second direction;
control signal lines to supply a control signal to the plurality of pixels; and
power supply lines to supply an initialization voltage to the plurality of pixels, wherein
each of the plurality of pixels includes a pixel circuit having a plurality of transistors and a light emitting element drivable by the pixel circuit,
the plurality of transistors in the pixel circuit includes a first transistor between the power supply line and the light emitting element, the first transistor being controllable based on the control signal,
the control signal lines, which extend to connect to respective sets of pixels of the plurality arranged in the first direction, are arranged in the second direction, and
the power supply lines, which extend to connect to respective sets of pixels of the plurality arranged in the second direction, are arranged in the first direction.
2 . The display device of claim 1 , wherein
the pixel circuit further includes a storage capacitor,
the plurality of transistors in the pixel circuit include a second transistor configured to supply current to the light emitting element,
the storage capacitor in the pixel circuit is configured to hold a voltage to control the current supplied by the second transistor to the light emitting element, and
the first transistor is connected to the storage capacitor.
3 . The display device of claim 2 , further comprising:
data signal lines to supply respective data signals to each of the plurality of pixels; and
gate signal lines to supply respective gate signals to each of the plurality of pixels, wherein
the plurality of transistors in the pixel circuit include a third transistor controllable based on the gate signal,
the data signal lines, which extend to connect to the respective set of pixels arranged in the second direction, are arranged in the first direction, and
the gate signal lines, which extend to connect to the respective set of pixels arranged in the first direction, are arranged in the second direction.
4 . The display device of claim 3 , wherein
in each of the plurality of pixels, the data signal is written to each of the plurality of pixels arranged in the first direction, and
the first transistor becomes an on state based on the control signal to write the data signal to the plurality of pixels arranged in the first direction.
5 . The display device of claim 2 , wherein
the pixel circuit is formed in a circuit layer comprised of a first layer, a second layer, and a third layer,
the first through third layers are stacked in order with the first layer being a bottom layer of the stack and the third layer being a top layer of the stack.
6 . The display device of claim 5 , wherein
the first and second transistors are formed across the first and second layers, and
the storage capacitor is formed across the first and second layers.
7 . The display device of claim 5 , wherein
the control signal line is formed on the second layer, and
a data signal line is formed on the third layer.
8 . A display device, comprising:
a base;
a plurality of pixels in a matrix along first and second directions intersecting each other in a display area on the base, the first direction being perpendicular to the second direction;
control signal lines to supply a control signal to the plurality of pixels; and
power supply lines to supply an initialization voltage to the plurality of pixels, wherein
each of the plurality of pixels includes a pixel circuit having a plurality of transistors and a light emitting element drivable by the pixel circuit,
the plurality of transistors in the pixel circuit includes a first transistor between the power supply line and the light emitting element, the first transistor being controllable based on the control signal,
the control signal lines, which extend to connect to respective sets of pixels of the plurality arranged in the first direction, are arranged in the second direction,
the power supply lines, which extend to connect to respective sets of pixels of the plurality arranged in the second direction, are arranged in the first direction,
the plurality of transistors in the pixel circuit include a second transistor configured to supply current to the light emitting element,
the pixel circuit is formed in a circuit layer comprised of a first layer, a second layer, and a third layer,
the first through third layers are stacked in order with the first layer being a bottom layer of the stack and the third layer being a top layer of the stack,
the first and second transistors are formed across the first and second layers, and
the control signal line is formed on the second layer.
9 . The display device of claim 8 , wherein
the pixel circuit further includes a storage capacitor,
the storage capacitor in the pixel circuit is configured to hold a voltage to control the current supplied by the second transistor to the light emitting element, and
the first transistor is connected to the storage capacitor.
10 . The display device of claim 9 , further comprising:
data signal lines to supply respective data signals to each of the plurality of pixels; and
gate signal lines to supply respective gate signals to each of the plurality of pixels, wherein
the plurality of transistors in the pixel circuit include a third transistor controllable based on the gate signal,
the data signal lines, which extend to connect to the respective set of pixels arranged in the second direction, are arranged in the first direction, and
the gate signal lines, which extend to connect to the respective set of pixels arranged in the first direction, are arranged in the second direction.
11 . The display device of claim 9 , wherein
the storage capacitor is formed across the first and second layers,
the control signal lines are formed on the second layer,
the gate signal lines are formed on the second layer, and
the data signal lines are formed on the third layer.