US 2022/0277676 A1 · DISPLAY DEVICE AND METHOD FOR MEASURING LUMINANCE PROFILE THEREOF

Abstract

A method for measuring a luminance profile of a display device including pixels divided into blocks, includes: measuring a first reference luminance profile when a partial area of each of the blocks is in a display state and a remaining area of each of the blocks is in a non-display state; measuring a first luminance profile when an entire area of a first block among the blocks is in the display state, the partial area of each of remaining blocks is in the display state, and the remaining area of each of the remaining blocks is in the non-display state; and measuring a second luminance profile when an entire area of a second block among the blocks is in the display state, the partial area of each of remaining blocks is in the display state, and the remaining area of each of the remaining blocks is in the non-display state.

Claims13

Dependent claims

A display device comprising:

pixels divided into a plurality of blocks;
and
a grayscale converter which converts input grayscales for the pixels into output grayscales,
wherein each of the blocks includes at least two of the pixels, and
wherein the grayscale converter generates the output grayscales based on block currents calculated from the input grayscales and prestored block luminance profiles.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/679,345Filed 24 Feb 2022

Priority

KR 10-2020-005998719 May 2020

Published

1 Sep 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G09G 3/006
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes: electronic inspection or…
G09G 3/2007
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 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 2320/0233
Improving the quality of display appearance: improving the luminance or brightness uniformity across the screen

Display device and method for measuring luminance profile thereof

Life of this patent

Display device and method for measuring luminance profile thereof

Life of this patent

Abstract

Claims13