US 12,008,944 B2 · Display panel driver and method of driving a display panel using the display panel driver for improving display quality

Abstract

A display panel driver includes: a driving controller receiving input image data and converting the input image data into a data signal and a data driver converting the data signal into a data voltage. The driving controller includes a plurality of lookup tables storing data signal values corresponding to grayscale values of the input image data based on an input maximum luminance, and a total number of the data signal values stored in a first lookup table corresponding to a first input maximum luminance is different from a total number of the data signal values stored in a second lookup table corresponding to a second input maximum luminance.

Claims20

Dependent claims

A display panel driver comprising:

a driving controller configured to receive input image data and to convert the input image data into a data signal;
and
a data driver configured to convert the data signal into a data voltage,
wherein the driving controller includes a plurality of lookup tables storing data signal values corresponding to grayscale values of the input image data based on an input maximum luminance, and
a total number of the data signal values stored in a first lookup table corresponding to a first input maximum luminance is different from a total number of the data signal values stored in a second lookup table corresponding to a second input maximum luminance.

2 more elements

A method of operating a display panel, the method comprising:

selecting one, based on an input maximum luminance, among a plurality of lookup tables in which data signal values corresponding to grayscale values of input image data are stored based on the input maximum luminance;
converting the input image data into a data signal using the selected one of the lookup tables;
converting the data signal into a data voltage;
and
outputting the data voltage to a display panel,
wherein a total number of the data signal values of a first lookup table corresponding to a first input maximum luminance is different from a total number of the data signal values of a second lookup table corresponding to a second input maximum luminance.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/199,093Filed 18 May 2023

Priority

KR 10-2022-011666115 Sep 2022

Published

US 2024/0096260 A121 Mar 2024

Granted

11 Jun 2024

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

G09G 3/2092
For presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged…:…
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 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 2310/027
Details of driving circuits: details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters

Display panel driver and method of driving a display panel using the display panel driver for improving display quality

Life of this patent

Display panel driver and method of driving a display panel using the display panel driver for improving display quality

Life of this patent

Abstract

Claims20