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Minimum‐voltage driving of small STN‐LCDs by optimized multiple‐row addressing
Author(s) -
Kuijk Karel E.
Publication year - 2000
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 - 10.1889/1.1828710
Subject(s) - citation , computer science , information retrieval , library science
— In small STN‐LCDs for portable applications, rows and columns are driven by one IC. The LC supply voltages are generated on‐chip from the battery voltage by voltage multiplying. The total LC supply voltage should be as low as possible to minimize the accompanied power losses. By using multiple‐row addressing, the row and maximum column voltages can be made equal, leading to a minimum LC supply voltage. This occurs when the number of simultaneously addressed rows is equal to the square root of the number of rows in the panel. The LC supply voltage may be minimized further by using a liquid crystal which allows multiplexing of more rows than are actually present in the display panel, while at the same time fewer simultaneously addressed rows are required.