Display apparatus that performs local dimming
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United States of America Patent
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Jun 21, 2022
Grant Date -
Nov 25, 2021
app pub date -
Nov 8, 2018
filing date -
Dec 22, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A display apparatus includes a plurality of light sources configured to emit light; a light guide plate having a first surface and a second surface, configured to spread light emitted from the plurality of light sources therein to emit light through the first surface; and a local dimming unit configured to reflect or scatter light emitted through the second surface of the light guide plate according to a location. The local dimming unit may include an electro-optical layer configured to change optical properties according to an electric field; a plurality of electrodes located on the same plane, configured to generate the electric field; and a controller configured to change a voltage applied to the plurality of electrodes according to an image.
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