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US 11,081,049 B2Granted
Pixel and display device having the same
AssigneeSamsung Display Co., Ltd.
InventorChae Han Hyun
Life of this patent
Estimating the term…
Abstract
A pixel in a display device includes a light emitting element, a first transistor for controlling an amount of current flowing from a first power source to a second power source via the light emitting element corresponding to a voltage applied to a first node, and second and third transistors coupled in series between a holding power source and a second node coupled to one electrode of the first transistor, wherein the second transistor includes a gate electrode coupled to an emission control line, and wherein the third transistor includes a gate electrode coupled to a scan line.
Claims15
A pixel comprising:
- a light emitting element;
- a first transistor configured to control an amount of current flowing from a first power source to a second power source via the light emitting element corresponding to a voltage applied to a first node;
- and
- second and third transistors coupled in series between a holding power source and a second node coupled to one electrode of the first transistor, the second transistor comprising a gate electrode coupled to an emission control line, and the third transistor comprising a gate electrode coupled to a scan line,
- a fourth transistor coupled between a data line and the second node, the fourth transistor comprising a gate electrode coupled to the scan line;
- a fifth transistor coupled between the first node and a third node, the fifth transistor comprising a gate electrode coupled to the scan line;
- a sixth transistor coupled between the first power source and the second node, the sixth transistor comprising a gate electrode coupled to the emission control line;
- a seventh transistor coupled between the third node and the light emitting element, the seventh transistor comprising a gate electrode coupled to the emission control line;
- and
- a storage capacitor coupled between the first power source and the first node.
7 more elements
A display device comprising:
- a display panel comprising a plurality of pixels;
- a scan driver configured to supply scan signals to the plurality of pixels through a plurality of scan lines;
- an emission driver configured to supply emission control signals to the plurality of pixels through a plurality of emission control lines;
- and
- a data driver configured to supply data voltages to the display panel through a plurality of data lines,
- wherein an (m, n) pixel of the plurality of pixels (m and n are natural numbers) comprises:
- a light emitting element;
- a first transistor configured to control an amount of current flowing from a first power source to a second power source via the light emitting element corresponding to a voltage applied to a first node;
- and
- second and third transistors coupled in series between a holding power source and a second node coupled to one electrode of the first transistor,
- wherein the one electrode of the first transistor is configured to receive a respective one of the data voltages from an (m)th data line of the data lines,
- wherein the second transistor comprises a gate electrode coupled to an (n)th emission control line of the plurality of emission control lines,
- wherein the third transistor comprises a gate electrode coupled to an (n)th scan line of the plurality of scan lines, and
- wherein the (m, n) pixel further comprises:
- a fourth transistor coupled between the (m)th data line and the second node, the fourth transistor comprising a gate electrode coupled to the (n)th scan line;
- a fifth transistor coupled between the first node and a third node, the fifth transistor comprising a gate electrode coupled the (n)th scan line;
- a sixth transistor coupled between the first power source and the second node, the sixth transistor comprising a gate electrode coupled to the (n)th emission control line;
- a seventh transistor coupled between the third node and the light emitting element, the seventh transistor comprising a gate electrode coupled to the (n)th emission control line;
- and
- a storage capacitor coupled between the first power source and the first node.
17 more elements
Dependencies are inferred from the claim text.