US 12,008,948 B2Granted

Display device

AssigneeSamsung Display Co., Ltd.

InventorsSoo Yeon Kim, Tae Gon Im, Jong Jae Lee, Dae Gwang Jang

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Abstract

A display device includes pixels; a sensing block generating first sensing data during a first sensing period, and generating second sensing data and third sensing data during a second sensing period; and a timing controller compensating first image data with second image data based on the first sensing data, the second sensing data, and the third sensing data. The sensing block generates the first sensing data corresponding to an initial channel voltage applied to each of sensing channels and at least one auxiliary sensing channel during the first sensing period, generates the second sensing data by sensing characteristic information of the pixels corresponding to an initialization voltage applied to the pixels during the second sensing period, and generates the third sensing data corresponding to a reference voltage applied to the at least one auxiliary sensing channel during the second sensing period.

Claims19

Dependent claims

A display device comprising:

pixels;
a sensing block generating first sensing data during a first sensing period, and generating second sensing data and third sensing data during a second sensing period, the sensing block including:
sensing channels;
and
at least one auxiliary sensing channel;
and
a timing controller compensating first image data with second image data based on the first sensing data, the second sensing data, and the third sensing data, wherein
the sensing block generates the first sensing data corresponding to an initial channel voltage applied to each of the sensing channels and the at least one auxiliary sensing channel during the first sensing period,
the sensing block generates the second sensing data by sensing characteristic information of the pixels corresponding to an initialization voltage applied to the pixels during the second sensing period,
the sensing block generates the third sensing data corresponding to a reference voltage applied to the at least one auxiliary sensing channel during the second sensing period, and
each of the sensing channels is electrically connected to an initial channel voltage line according to an operation of an initial channel voltage switch, and
each of the sensing channels is electrically connected to a switching matrix according to an operation of a channel switch.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/739,807Filed 9 May 2022
Priority: KR 10-2021-007022831 May 2021
Published: US 2022/0383802 A11 Dec 2022
Granted: 11 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G09G 3/32
Using electroluminescent panels: semiconductive, e.g. using light-emitting diodes [LED]
G09G 3/3258
Using an active matrix: with pixel circuitry controlling the voltage across 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…
G09G 2300/043
Structural details of the set of electrodes: compensation electrodes or other additional electrodes in matrix displays related to distortions or…

Family

US 2022/0383802 A1Pre-grant publication · published 1 Dec 2022
US 12,008,948 B2This patent

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

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