Abstract
The charge sharing technique is well known and widely used for
low-power consumption in TFT-LCDs. However, it does not work so well
as the screen size becomes larger and the frame frequency and display
format become higher. The theoretical power saving efficiency can
reach 50%, but, for a 55-in diagonal Full-HD format LCD TV, it drops
below 30%. In order to address the degraded power saving efficiency
of the conventional charge sharing technique for large-screen high-format
LCD TVs, we propose a novel charge sharing technique with a panel
design and a driving method. The proposed charge sharing technique
enhances the power saving efficiency up to 43% from the previous 28%
even for a large-screen LCD TV such as the 55-in diagonal Full-HD
format. In particular, the proposed technique is found to be well
suited for the oxide-TFT technology, which is very promising for next-generation
large-screen LCD TVs.
© 2015 IEEE
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