Light emitting display device
A light emitting display device includes multiple pixels arranged in multiple pixel rows, a first scan signal generator that provides a first scan signal to the pixels in the pixel rows, a second scan signal generator that provides a second scan signal to the pixels in the pixel rows, a third scan signal generator that provides a third scan signal to the pixels in the pixel rows, and a light emission signal generator that provides a light emission signal to the pixels in the pixel rows. Each of the second scan signal generator, the third scan signal generator, and the light emission signal generator provides a same signal to the pixels in two of the pixel rows.
1 . A light emitting display device comprising:
a plurality of pixels arranged in a plurality of pixel rows;
a first scan signal generator that provides a first scan signal to the plurality of pixels in the plurality of pixel rows;
a second scan signal generator that provides a second scan signal to the plurality of pixels in the plurality of pixel rows;
a third scan signal generator that provides a third scan signal to the plurality of pixels in the plurality of pixel rows; and
a light emission signal generator that provides a light emission signal to the plurality of pixels in the plurality of pixel rows, wherein
each of the plurality of pixels comprises:
a driving transistor;
a light emitting diode that receives an output from the driving transistor;
a second transistor that receives the first scan signal through a gate electrode of the second transistor;
a third transistor that receives the second scan signal through a gate electrode of the third transistor;
a fourth transistor that receives the third scan signal through a gate electrode of the fourth transistor; and
a fifth transistor that receives the light emission signal through a gate electrode of the fifth transistor,
each of the plurality of pixels includes a pixel circuit consisting of the driving transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, the light emitting diode, and at least one capacitor,
each of the second scan signal generator, the third scan signal generator, and the light emission signal generator provides a same signal to the plurality of pixels in two of the plurality of pixel rows,
the light emission signal generator comprises a first light emission signal generator and a second light emission signal generator,
the first light emission signal generator and the second light emission signal generator are disposed on opposing sides of the plurality of pixels,
the second light emission signal generator provides a same light emission signal as the first light emission signal generator to the plurality of pixels in any one of the plurality of pixel rows, and
during one frame period, the first scan signal is turned-off while the third scan signal is turned-on, and the first scan signal is turned-on after a predetermined time has elapsed after the third scan signal is turned-off.
2 . The light emitting display device of claim 1 , wherein the first scan signal generator provides a same first scan signal to the plurality of pixels in each of the plurality of pixel rows.
3 . The light emitting display device of claim 2 , wherein
the first scan signal generator comprises a first-first scan signal generator and a first-second scan signal generator, and
the first-first scan signal generator and the first-second scan signal generator are disposed on opposing sides of the plurality of pixels.
4 . The light emitting display device of claim 2 , wherein each of the second scan signal generator and the third scan signal generator is disposed on only a side of the plurality of pixels.
5 . The light emitting display device of claim 4 , wherein
the second scan signal generator is disposed on a first side of the plurality of pixels, and
the third scan signal generator is disposed on a second side of the plurality of pixels, which faces the first side.
6 . The light emitting display device of claim 2 , wherein the first scan signal generator is disposed on only a side of the plurality of pixels.
7 . The light emitting display device of claim 6 , wherein
the first scan signal generator is disposed on a first side of the plurality of pixels.
8 . The light emitting display device of claim 6 , wherein each of the second scan signal generator and the third scan signal generator is disposed on only a side of the plurality of pixels.
9 . The light emitting display device of claim 8 , wherein
the second scan signal generator is disposed on a first side of the plurality of pixels, and
the third scan signal generator is disposed on a second side of the plurality of pixels, which faces the first side.
10 . The light emitting display device of claim 1 , wherein each of the driving transistor, the second transistor, the third transistor, the fourth transistor, and the fifth transistor are n-type transistors that include an oxide semiconductor layer, and
each of the pixel circuit consists of two capacitors.
11 . The light emitting display device of claim 10 , wherein
a first electrode of the second transistor is electrically connected to a data line,
a second electrode of the second transistor is electrically connected to a gate electrode of the driving transistor,
a first electrode of the third transistor is electrically connected to a reference voltage line,
a second electrode of the third transistor is electrically connected to the gate electrode of the driving transistor,
a first electrode of the fourth transistor is electrically connected to an initialization voltage line,
a second electrode of the fourth transistor is electrically connected to a second electrode of the driving transistor and an electrode of the light emitting diode,
a first electrode of the fifth transistor is electrically connected to a driving voltage line, and
a second electrode of the fifth transistor is electrically connected to a first electrode of the driving transistor.
12 . The light emitting display device of claim 11 , wherein
the two capacitors comprise a first capacitor and a second capacitor,
a first electrode of the first capacitor is electrically connected to the second electrode of the driving transistor and the electrode of the light emitting diode,
a second electrode of the first capacitor is electrically connected to the gate electrode of the driving transistor,
a first electrode of the second capacitor is electrically connected to the driving voltage line, and
a second electrode of the second capacitor is electrically connected to the second electrode of the driving transistor and the electrode of the light emitting diode.
13 . A light emitting display device comprising:
a plurality of pixels arranged in a plurality of pixel rows;
a first scan signal generator that provides a first scan signal to the plurality of pixels in the plurality of pixel rows;
a second scan signal generator that provides a second scan signal to the plurality of pixels in the plurality of pixel rows;
a third scan signal generator that provides a third scan signal to the plurality of pixels in the plurality of pixel rows; and
a light emission signal generator that provides a light emission signal to the plurality of pixels in the plurality of pixel rows, wherein
each of the plurality of pixels comprises:
a driving transistor;
a light emitting diode that receives an output from the driving transistor;
a second transistor that receives the first scan signal through a gate electrode of the second transistor;
a third transistor that receives the second scan signal through a gate electrode of the third transistor;
a fourth transistor that receives the third scan signal through a gate electrode of the fourth transistor; and
a fifth transistor that receives the light emission signal through a gate electrode of the fifth transistor,
each of the plurality of pixels includes a pixel circuit consisting of the driving transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, the light emitting diode, and at least one capacitor,
the light emission signal generator comprises a first light emission signal generator and a second light emission signal generator that each apply a same light emission signal to the plurality of pixels in each of the plurality of pixel rows,
the first light emission signal generator and the second light emission signal generator are disposed on opposing sides of the plurality of pixels,
the first scan signal generator comprises a first-first scan signal generator and a first-second scan signal generator,
the first-first scan signal generator and the first-second scan signal generator are disposed on opposing sides of the plurality of pixels,
each of the second scan signal generator and the third scan signal generator is disposed on only a side of the plurality of pixels, and
during one frame period, the first scan signal is turned-off while the third scan signal is turned-on, and is turned-on after a predetermined time has elapsed after the third scan signal is turned-off.
14 . The light emitting display device of claim 13 , wherein
the second scan signal generator is disposed on a first side of the plurality of pixels, and
the third scan signal generator is disposed on a second side of the plurality of pixels, which faces the first side.
15 . The light emitting display device of claim 13 , wherein each of the second scan signal generator, the third scan signal generator, and the light emission signal generator provides a same signal to the plurality of pixels in two of the plurality of pixel rows.
16 . The light emitting display device of claim 15 , wherein the first scan signal generator provides a same first scan signal to the plurality of pixels in each of the plurality of pixel rows.
17 . The light emitting display device of claim 13 , wherein
each of the driving transistor, the second transistor, the third transistor, the fourth transistor and the fifth transistor are n-type transistors that include an oxide semiconductor layer, and
each of the pixel circuit consists of two capacitors.
18 . The light emitting display device of claim 17 , wherein
a first electrode of the second transistor is electrically connected to a data line,
a second electrode of the second transistor is electrically connected to a gate electrode of the driving transistor,
a first electrode of the third transistor is electrically connected to a reference voltage line,
a second electrode of the third transistor is electrically connected to the gate electrode of the driving transistor,
a first electrode of the fourth transistor is electrically connected to an initialization voltage line,
a second electrode of the fourth transistor is electrically connected to a second electrode of the driving transistor and an electrode of the light emitting diode,
a first electrode of the fifth transistor is electrically connected to a driving voltage line, and
a second electrode of the fifth transistor is electrically connected to a first electrode of the driving transistor.
19 . The light emitting display device of claim 18 , wherein
the two capacitors comprise a first capacitor and a second capacitor,
a first electrode of the first capacitor is electrically connected to the second electrode of the driving transistor and the electrode of the light emitting diode,
a second electrode of the first capacitor is electrically connected to the gate electrode of the driving transistor,
a first electrode of the second capacitor is electrically connected to the driving voltage line, and
a second electrode of the second capacitor is electrically connected to the second electrode of the driving transistor and the electrode of the light emitting diode.