Display device
AssigneeSamsung Display Co., Ltd.
InventorsSOIL YOON, JUNHYUN PARK, YOUNGWAN SEO
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Abstract
Provided is a display device including a first pixel and a second pixel. Each of the first pixel and the second pixel may include a light emitting element, a driving transistor connected to the light emitting element and a power line and controlled by a voltage of a first node, a switching transistor connected to a data line and a second node and controlled by a write scan signal, a capacitor connected to the first node and the second node, and a bias transistor connected to the driving transistor and a bias line, and controlled by a bias scan signal. The first and second pixels may share the bias transistor.
Claims20
A display device comprising:
- a first pixel;
- and
- a second pixel,
- wherein each of the first pixel and the second pixel comprises:
- a light emitting element;
- a driving transistor connected to the light emitting element and a power line, wherein the driving transistor is controlled by a voltage of a first node;
- a switching transistor connected to a data line and a second node, wherein the switching transistor is controlled by a write scan signal;
- a capacitor connected to the first node and the second node;
- and
- a bias transistor connected to the driving transistor and a bias line, wherein the bias transistor is controlled by a bias scan signal,
- wherein the first and second pixels share the bias transistor.
A display device comprising:
- a first pixel;
- and
- a second pixel,
- wherein each of the first pixel and the second pixel comprises:
- a light emitting element:
- a driving transistor, wherein the driving transistor comprises:
- a semiconductor layer comprising a source region connected to a power line, a drain region connected to the light emitting element, and a channel region between the source and drain regions, and a gate electrode disposed on the channel region;
- a dummy electrode disposed on the gate electrode;
- and
- a switching transistor connected to a data line and the dummy electrode, wherein the switching transistor is controlled by a write scan signal,
- wherein the source regions of the driving transistors of the first and second pixels are connected to a shared node,
- wherein the dummy electrode comprises:
- a first portion extending from the gate electrode and overlapping the source region to provide a first parasitic capacitance;
- and
- a second portion extending from the gate electrode and overlapping the drain region to provide a second parasitic capacitance,
- wherein the first parasitic capacitance is less than the second parasitic capacitance.
A display device comprising:
- a first pixel;
- and
- a second pixel,
- wherein each of the first pixel and the second pixel comprises:
- a light emitting element:
- a driving transistor, wherein the driving transistor comprises:
- a semiconductor layer comprising a source region connected to a power line, a drain region connected to the light emitting element, and a channel region between the source and drain regions;
- and
- a gate electrode disposed on the channel region;
- a dummy electrode disposed on the gate electrode;
- a switching transistor connected to a data line and the dummy electrode, the switching transistor being controlled by a write scan signal;
- and
- a bias transistor connected to the source region and a bias line, the bias transistor being controlled by a bias scan signal,
- wherein the first and second pixels share the bias transistor.
Dependencies are inferred from the claim text.