US 2022/0189420 A1 · IMAGE DISPLAY APPARATUS AND IMAGE DISPLAY METHOD

Abstract

An image display apparatus includes a display panel including multiple pixels, a backlight including multiple white-light light sources, a panel driving circuit, a backlight driving circuit, and a determination circuit determining image data. The white-light light sources have characteristics that cause afterglow of a particular color to persist longer than afterglow of another color. The backlight driving circuit segments the backlight into multiple areas and drives the backlight such that a time duration of performing control to cause the areas to sequentially be in a light-emission state at mutually different timings alternates with a time duration of performing control to cause all the areas to be in a non-light-emission state. The determination circuit determines a determination value indicating a degree of inclusion at which achromatic data is included in the image data and determines a light-emission start timing of each of the areas in accordance with the determination value.

Claims20

Dependent claims

An image display apparatus comprising:

a display panel including a plurality of pixels;
a backlight including a plurality of white-light light sources and emitting light onto a rear surface of the display panel;
a panel driving circuit driving the display panel;
a backlight driving circuit driving the backlight;
and
a determination circuit determining image data that is input,
wherein the white-light light sources have persistence characteristics that cause afterglow of a particular color to persist longer than afterglow of another color,
wherein the backlight driving circuit segments the backlight into a plurality of areas and drives the backlight in a manner such that a time duration of performing control to cause the areas to sequentially be in a light-emission state at mutually different timings alternates with a time duration of performing control to cause all the areas to be in a non-light-emission state, and
wherein the determination circuit determines a determination value indicating a degree of inclusion at which achromatic data is included in the image data and determines a light-emission start timing of each of the areas in accordance with the determination value.

6 more elements

An image display method of an image display apparatus including a display panel including a plurality of pixels and a backlight including a plurality of white-light light sources and emitting light onto a rear surface of the display panel, the image display method comprising:

driving the display panel;
driving the backlight;
and
determining image data that is input,
wherein the white-light light sources have persistence characteristics that cause afterglow of a particular color to persist longer than afterglow of another color,
wherein the driving of the backlight includes segmenting the backlight into a plurality of areas and driving the backlight in a manner such that a time duration of performing control to cause the areas to sequentially be in a light-emission state at mutually different timings alternates with a time duration of performing control to cause all the areas to be in a non-light-emission state;
and
wherein the determining of the image data includes determining a determination value indicating a degree of inclusion at which achromatic data is included in the image data and determining a light-emission start timing of each of the areas in accordance with the determination value.

5 more elements

Dependencies are inferred from the claim text.

Image display apparatus and image display method

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Image display apparatus and image display method

Life of this patent

Abstract

Claims20