Backlight assembly and display device having the same

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

Reexamination Certificate

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Details

C315S308000, C315S309000

Reexamination Certificate

active

07990360

ABSTRACT:
A backlight assembly a plurality of first light-emitting chips for emitting light and a thermistor for indicating the temperature of the first light-emitting chips. The first light-emitting chips emit first color light and are connected in series to each other. The thermistor may be connected in series to the first light-emitting chips and has an electrical resistance that decreases with an increase of its temperature. The light amount emitted by the first light-emitting chips is controlled by pulse width modulating the current driving the first light-emitting chips based on the temperature (resistance) of the thermistor and based on received image data. Thus, a decrease in brightness due to temperature variation may be compensated for while performing color dimming.

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patent: 6690121 (2004-02-01), Weindorf
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patent: 7728808 (2010-06-01), Kim
patent: 2007/0064421 (2007-03-01), Baba
patent: 2008/0079371 (2008-04-01), Kang et al.
patent: 2010/0259182 (2010-10-01), Man et al.
patent: 1020000024850 (2000-05-01), None

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