US 11,776,480 B2Granted

Pixel and display device including the same

AssigneeSamsung Display Co., Ltd.

InventorsMin Jae Jeong, Jang Mi Kang, Hyeong Seok Kim, Jun Hyun Park, Mu Kyung Jeon

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Abstract

A pixel includes a light emitting element, a first transistor connected between first and second nodes and that generates a driving current flowing from a first power line to a second power line through the light emitting element, a second transistor connected between a data line and the first node and turned on in response to a fourth scan signal, a third transistor connected between the second node and a third node corresponding to a gate electrode of the first transistor and turned on in response to a second scan signal, a fourth transistor connected between the third node and a third power line providing a third power voltage and turned on in response to a first scan signal, and a fifth transistor connected between the first and fourth nodes and turned on in response to a fifth scan signal.

Claims20

Dependent claims

A pixel comprising:

a light emitting element;
a first transistor connected between a first node and a second node and that generates a driving current flowing from a first power line that provides a first power voltage to a second power line that provides a second power voltage through the light emitting element;
a second transistor connected between a data line and the first node and turned on in response to a fourth scan signal supplied to a fourth scan line;
a third transistor connected between the second node and a third node that corresponds to a gate electrode of the first transistor and turned on in response to a second scan signal supplied to a second scan line;
a fourth transistor connected between the third node and a third power line that provides a third power voltage and turned on in response to a first scan signal supplied to a first scan line;
a fifth transistor connected between the first node and a fourth node and turned on in response to a fifth scan signal supplied to a fifth scan line;
a sixth transistor connected between the first power line and the first node and turned off in response to a first emission control signal supplied to a first emission control line;
a seventh transistor connected between the second node and a fifth node that corresponds to a first electrode of the light emitting element and turned off in response to a second emission control signal supplied to a second emission control line;
a first capacitor connected between the third node and the fourth node;
and
a second capacitor connected between the first power line and the fourth node.

8 more elements

A display device comprising:

a pixel connected to first to fifth scan lines, first and second emission control lines, and a data line;
a scan driver configured to supply first to fifth scan signals to the first to fifth scan lines, respectively;
an emission driver configured to supply first and second emission control signals to the first and second emission control lines, respectively;
and
a data driver configured to supply a data signal to the data line,
wherein the pixel comprises:
a light emitting element;
a first transistor connected between a first node and a second node and that generates a driving current flowing from a first power line that provides a first power voltage to a second power line that provides a second power voltage through the light emitting element;
a second transistor connected between the data line and the first node and turned on in response to the fourth scan signal;
a third transistor connected between the second node and a third node that corresponds to a gate electrode of the first transistor and turned on in response to the second scan signal;
a fourth transistor connected between the third node and a third power line that provides a third power voltage and turned on in response to the first scan signal;
a fifth transistor connected between the first node and a fourth node and turned on in response to the fifth scan signal;
a sixth transistor connected between the first power line and the first node and turned off in response to a first emission control signal;
a seventh transistor connected between the second node and a fifth node that corresponds to a first electrode of the light emitting element and turned off in response to the second emission control signal;
a first capacitor connected between the third node and the fourth node;
and
a second capacitor connected between the first power line and the fourth node.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/860,676Filed 8 Jul 2022
Priority: KR 10-2021-01500903 Nov 2021
Published: US 2023/0140604 A14 May 2023
Granted: 3 Oct 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

G09G 3/3258
Using an active matrix: with pixel circuitry controlling the voltage across the light-emitting element
G09G 3/3266
Organic, e.g. using organic light-emitting diodes [OLED]: details of drivers for scan electrodes
G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 3/3291
Details of drivers for data electrodes: in which the data driver supplies a variable data voltage for setting the current through, or the voltage…