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LED backlight driving system with local dimming and scanning driver IC
Author(s) -
Lee KiChan,
Choi KyoungUk,
Lee SangGil,
Park YunJae,
Ko HyunSeok,
Moon SeungHwan,
Berkeley Brian H.
Publication year - 2010
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/jsid18.2.146
Subject(s) - backlight , computer science , pulse width modulation , computer hardware , liquid crystal display , electrical engineering , engineering , voltage , operating system
— Novel LED backlight driving technology with a fully embedded LED driver IC is presented. This driving system and IC feature a high speed reduced swing differential signaling (RSDS) interface, an independent PWM controller with high‐resolution programming, and embedded scan logic. To attain high efficiency from the boost converter, highly advanced dynamic headroom control technology has been implemented onto the IC. The embedded current boosting function showed almost no brightness reduction when operated in scanning mode. The scanning function of the system improved motion blur values 26–44% compared to that of a non‐scanning LCD panel.