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US 2023/0413608 A1Published application
Light emitting display device
AssigneeSamsung Display Co., Ltd.
InventorsHee Rim SONG, Byung Chang YU, Gyung Soon PARK
Life of this patent
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Abstract
A light emitting display device includes: a first display area including a first light-emitting element and a first pixel circuit unit; and a second display area including a second light-emitting element disposed to overlap a driving unit and a second pixel circuit unit which drives the second light-emitting element, where the first pixel circuit unit further include a first boost capacitor.
Claims20
A light emitting display device comprising:
- a first display area including a first light-emitting element and a first pixel circuit unit which drives the first light-emitting element and overlaps the first light-emitting element;
- and
- a second display area including a second light-emitting element and a second pixel circuit unit which drives the second light-emitting element and does not overlap the second light-emitting element,
- wherein a pixel density in the first display area is greater than a pixel density in the second display area,
- wherein each of the first pixel circuit unit and the second pixel circuit unit includes:
- a first transistor which generates an output current, wherein the first transistor is a driving transistor;
- a second transistor which receives a data voltage from a data line;
- a third transistor which transmits the data voltage output from the second transistor to a gate electrode of the first transistor,
- a fifth transistor which transmits a driving voltage to the first transistor;
- and
- a sixth transistor which transmits the output current output from the first transistor to the first light-emitting element or the second light-emitting element, and
- wherein the first pixel circuit unit further includes a first boost capacitor.
9 more elements
A light emitting display device comprising:
- a first display area including a first light-emitting element and a first pixel circuit unit which drives the first light-emitting element and overlaps the first light-emitting element;
- and
- a second display area including a second light-emitting element and a second pixel circuit unit which drives the second light-emitting element and does not overlap the second light-emitting element,
- wherein a pixel density in the first display area is greater than a pixel density in the second display area,
- wherein each of the first pixel circuit unit and the second pixel circuit unit includes:
- a first transistor which generates an output current, wherein the first transistor is a driving transistor;
- a second transistor which receives a data voltage from a data line;
- and
- a third transistor which transmits the data voltage output from the second transistor to a gate electrode of the first transistor,
- wherein the first pixel circuit unit further includes a first boost capacitor,
- wherein one electrode of the first boost capacitor is connected to a first scan line connected to a gate electrode of the second transistor, and another electrode of the first boost capacitor is connected to the gate electrode of the first transistor,
- wherein the third transistor includes an oxide semiconductor, and
- wherein the first boost capacitor includes a first boost electrode overlapping the first scan line and disposed in a same layer as the oxide semiconductor.
10 more elements
Dependencies are inferred from the claim text.