Backlight system, display apparatus, and light emission control method
AssigneeSony Group Corporation
InventorsNorimasa Furukawa, Shingo Kimura, Kazuhiro Horiuchi, Kenichi Nakaki
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Abstract
A backlight unit of the present disclosure includes: a backlight including a plurality of light-emitting devices that are allowed to emit light at mutually different timings and include a first light-emitting device and a second light-emitting device; and a controller that controls a light emission operation of the backlight to cause the first light-emitting device and the second light-emitting device to emit light with mutually different average light emission intensities in a first sub-frame period of a plurality of sub-frame periods provided corresponding to a frame period.
Claims12
A backlight unit, comprising:
- a backlight including a plurality of light-emitting sections, the light-emitting sections being operable to emit light at mutually different timings and including a first light-emitting section and a second light-emitting section;
- and
- a controller that controls a light emission operation of the backlight to cause the first light-emitting section and the second-light emitting section to emit light with mutually different light emission intensities in a first sub-frame period of a plurality of sub-frame periods corresponding to a frame period,
- wherein, the backlight unit comprises a diffuser plate that diffuses light emitted from the plurality of light-emitting sections to output diffused light, and
- wherein a gradient in a characteristic of the diffused light output from the diffuser plate, as determined by fitting a portion of the characteristic to a sinusoidal waveform, is equal to or lower than a maximum gradient in a sine-wave grating having a spatial frequency based on a resolution of images displayed on a screen of a display apparatus and a distance from the screen.
A display apparatus, comprising:
- a display section;
- a backlight including a plurality of light-emitting sections, the light-emitting sections being operable to emit light at mutually different timings and including a first light-emitting section and a second light-emitting section;
- and
- a controller that controls a light emission operation of the backlight to cause the first light-emitting section and the second light-emitting section to emit light with mutually different light emission intensities in a first sub-frame period of a plurality of sub-frame periods corresponding to a frame period,
- wherein,
- the backlight unit comprises a diffuser plate that diffuses light emitted from the plurality of light-emitting sections to output diffused light, and
- a gradient in a characteristic of the diffused light output from the diffuser plate as determined by fitting a portion of the characteristic to a sinusoidal waveform, is equal to or lower than a maximum gradient in a sine-wave grating having a spatial frequency based on a resolution of images displayed on a screen of the display apparatus and a distance from the screen.
Dependencies are inferred from the claim text.