US 11,308,874 B2Granted

Display device

AssigneeSamsung Display Co., Ltd.

InventorsTae Young Kim, Jong Woo Park, Hyo Jung Kim, Ki Ju Im, Young Tae Choi

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Abstract

A display device including an emitting element. A first transistor includes a first electrode electrically connected to a first supply voltage line, a second electrode electrically connected to the emitting element, and a gate electrode receiving a data signal, the first transistor being configured to transfer a driving current to the emitting element based on the data signal. A capacitor is connected between the gate electrode of the first transistor and the first supply voltage line. An electric field generating element is connected between the second electrode of the first transistor and the gate electrode of the first transistor and includes ferroelectrics.

Claims5

Dependent claims

A display device comprising:

a substrate;
a semiconductor layer disposed on the substrate, the semiconductor layer comprising a first region, a second region disposed on one side of the first region where a first electrode of a transistor is formed, and a third region disposed on another side of the first region where a second electrode of the transistor is formed;
a first insulating layer disposed on the semiconductor layer;
a first conductive layer disposed on the first insulating layer and comprising a gate electrode overlapping with the first region;
and
a ferroelectric layer disposed on the first insulating layer and overlapping with at least a part of the second region of the semiconductor layer,
wherein the ferroelectric layer contacts upper and lateral side surfaces of the first conductive layer and a side surface, and not top and bottom surfaces, of at least the second electrode.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/358,700Filed 20 Mar 2019
Priority: KR 10-2018-007168321 Jun 2018
Published: US 2019/0392758 A126 Dec 2019
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 3/3266
Organic, e.g. using organic light-emitting diodes [OLED]: details of drivers for scan electrodes
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…
H10D 30/701
Insulated-gate field-effect transistors [IGFET]: iGFETs having ferroelectric gate insulators, e.g. ferroelectric FETs

Family

US 2019/0392758 A1Pre-grant publication · published 26 Dec 2019
US 11,308,874 B2This patent

From the US filing history. Foreign family members aren’t listed.

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