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L‐3: Late‐News Paper : A COG Source Driver with LCDS Interface for Cost Effective TFT‐LCDs
Author(s) -
Choi WooJae,
Oh WoonTaek,
Park WookHee,
Sung YooChang,
Yang IkSeok,
Kim MiYoun,
Lew JiHo,
Kim JongKee,
Lee JungTae,
Kim HaSook,
Kim SeoYoon
Publication year - 2006
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2433322
Subject(s) - liquid crystal display , printed circuit board , interface (matter) , cog , thin film transistor , current source , voltage , electrical engineering , computer hardware , engineering , electronic engineering , computer science , physics , electrode , quantum mechanics , artificial intelligence , pulmonary surfactant , gibbs isotherm , chemical engineering , operating system
We propose a COG(Chip‐On‐Glass) source driver which uses a current‐mode interface named LCDS(Low Current Differential Signaling) with point‐to‐point topology, internal voltage regulator and internal gamma reference buffer for cost effective TFT‐LCDs. The proposed COG source driver can minimize control PCB board and FPC(Flexible Printed Circuit) for signal and power supply lines. We successfully demonstrate the 12.1‐inch diagonal XGA TFT‐LCD panel with the proposed source driver. Its module cost except panel is reduced to 70% of that of conventional panel with COF source driver and source PCB board.