US 11,776,474 B2Granted

Display device

AssigneeSamsung Display Co., Ltd.

InventorsYujin Lee, Heejean Park, Heerim Song, Cheol-Gon Lee, Mukyung Jeon

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Abstract

A pixel includes a driving transistor, a switching transistor, and first and second capacitors. The gate of the driving transistor is disposed below a first insulating layer, and a first conductive pattern defining a first electrode of the first capacitor is disposed below the first insulating layer. A second conductive pattern defining a second electrode of the first capacitor and a first electrode of the second capacitor is disposed on the first insulating layer, a third conductive pattern defining a second electrode of the second capacitor is disposed on a second insulating layer covering the second conductive pattern, and the data line is disposed above the second insulating layer.

Claims20

Dependent claims

A display device comprising a display panel including:

a plurality of insulating layers;
a first pixel electrically connected to a first data line extending in a first direction and a first scan line extending in a second direction crossing the first direction;
and a second pixel electrically connected to a second data line extending in the second direction and the first scan line,
wherein the first pixel comprises:
a light-emitting diode comprising a first electrode electrically connected to a first node, a second electrode which receives a first power voltage, and a light-emitting layer disposed between the first electrode and the second electrode;
a first transistor comprising a source, a drain, a semiconductor region, and a gate electrically connected to a second node, wherein the first transistor is electrically connected between a first voltage line which receives a second power voltage and the first node;
a second transistor electrically connected between the first data line and the second node;
a third transistor electrically connected between the second node and a second voltage line which receives a first voltage;
a first capacitor electrically connected between the first node and the second node;
a fourth transistor electrically connected between a third voltage line which receives a second voltage and the first node;
a fifth transistor electrically connected between the first voltage line and the drain or the source of the first transistor;
and
a second capacitor electrically connected between the first voltage line and the first node,
wherein:
the plurality of insulating layers comprises a first insulating layer and a second insulating layer disposed on the first insulating layer;
the gate of the first transistor is disposed below the first insulating layer;
a first conductive pattern defining a first electrode of the first capacitor is disposed below the first insulating layer;
a second conductive pattern defining a second electrode of the first capacitor and a first electrode of the second capacitor is disposed between the first insulating layer and the second insulating layer;
a third conductive pattern defining a second electrode of the second capacitor is disposed above the second insulating layer;
and
the first data line is disposed above the second insulating layer and the third conductive pattern.

18 more elements

A display device comprising:

a light-emitting diode comprising a first electrode, a second electrode which receives a first power voltage, and a light-emitting layer disposed between the first electrode and the second electrode;
a switching transistor which outputs a voltage corresponding to a data signal from a data line;
a first capacitor which stores the voltage received from the switching transistor;
a driving transistor which controls an amount of current of the light-emitting diode to correspond to the voltage stored in the first capacitor;
and
a second capacitor connected between a voltage line, which receives a second power voltage higher than the first power voltage, and an output terminal of the driving transistor,
wherein:
a gate of the driving transistor is disposed below a first insulating layer;
a first conductive pattern defining a first electrode of the first capacitor is disposed below the first insulating layer;
a second conductive pattern defining a second electrode of the first capacitor and a first electrode of the second capacitor is disposed on the first insulating layer;
a third conductive pattern defining a second electrode of the second capacitor is disposed on a second insulating layer covering the second conductive pattern;
and
the data line is disposed above the second insulating layer and the third conductive pattern.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/702,136Filed 23 Mar 2022
Priority: KR 10-2021-006301614 May 2021
Published: US 2022/0366849 A117 Nov 2022
Granted: 3 Oct 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
H10K 59/1216
Characterised by the geometry or disposition of pixel elements: the pixel elements being capacitors
H10K 59/124
Active-matrix OLED [AMOLED] displays: insulating layers formed between TFT elements and OLED elements
H10K 59/131
Active-matrix OLED [AMOLED] displays: interconnections, e.g. wiring lines or terminals