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US 12,217,676 B2Granted
Display device
AssigneeSamsung Display Co., Ltd.
InventorsKyoungju Shin, Yangsoo Kim, Jungkook Park, Jaeyoung Oh, Woojin Lee, Jaeho Jung
Life of this patent
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Abstract
A pixel circuit of a display device includes first to sixth thin-film transistors, and first and second capacitors. The first thin-film transistor generates a driving current, the sixth thin-film transistor is connected between a light-emitting element and the first thin-film transistor and controls a transfer of the driving current, and the second capacitor is connected between a gate electrode of the sixth thin-film transistor and the light-emitting element.
Claims23
A display device comprising:
- a display panel comprising:
- a pixel comprising:
- a pixel circuit comprising:
- a first thin-film transistor which comprises a gate electrode connected to a first node, a first electrode, and a second electrode, and generates a driving current;
- a second thin-film transistor connected between the first electrode of the first thin-film transistor and a data line;
- a third thin-film transistor connected between the first node and the second electrode of the first thin-film transistor;
- a fourth thin-film transistor connected between the first node and an initialization voltage line;
- a fifth thin-film transistor connected between the first electrode of the first thin-film transistor and a first driving voltage line;
- a sixth thin-film transistor which controls a transfer of the driving current;
- a first capacitor connected between the first node and the first driving voltage line;
- and
- a second capacitor;
- and
- a light-emitting element connected to the pixel circuit,
- wherein
- the sixth thin-film transistor is connected between the second electrode of the first thin-film transistor and the light-emitting element, and
- the second capacitor is connected between a gate electrode of the sixth thin-film transistor and the light-emitting element.
14 more elements
A display device comprising a display panel comprising:
- a pixel comprising:
- a pixel circuit comprising:
- a switching thin-film transistor which transfers a data signal according to a switching operation;
- a driving thin-film transistor which generates a driving current corresponding to the data signal;
- an NMOS-type light emission control thin-film transistor which controls the transfer of the driving current and including an oxide semiconductor layer;
- and
- a compensation capacitor;
- and
- a light-emitting element connected to the pixel circuit,
- wherein
- the NMOS-type light emission control thin-film transistor is connected between the driving thin-film transistor and the light-emitting element, and
- the compensation capacitor is connected between a gate electrode of the NMOS-type light emission control thin-film transistor and the light-emitting element.
9 more elements
A display device comprising:
- a display panel comprising:
- a pixel comprising a pixel circuit, the pixel circuit comprising:
- first thin-film transistor which comprises a gate electrode connected to a first node, a first electrode and a second electrode, and generates a driving current;
- a second thin-film transistor connected between the first electrode of the first thin-film transistor and a data line;
- a third thin-film transistor connected between the first node and the second electrode of the first thin-film transistor;
- a fourth thin-film transistor connected between the first node and an initialization voltage line;
- a fifth thin-film transistor connected between the first electrode of the first thin-film transistor and a first driving voltage line;
- a sixth thin-film transistor which controls a transfer of the driving current;
- a first capacitor connected between the first node and the first driving voltage line;
- and
- a second capacitor;
- and
- a light-emitting element connected to the pixel circuit,
- wherein each of the third thin-film transistor and the fourth thin-film transistor is an NMOS thin-film transistor including an oxide semiconductor layer, and each of the first thin-film transistor and the second thin-film transistor is a PMOS thin-film transistor including a silicon semiconductor layer,
- the sixth thin-film transistor is connected between the second electrode of the first thin-film transistor and the light-emitting element, and
- the second capacitor is connected between a gate electrode of the sixth thin-film transistor and the light-emitting element.
13 more elements
Dependencies are inferred from the claim text.