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US 2006/0187169 A1Published application
Liquid crystal display device having filter to reduce riffle noise
OwnerTakeshi Okunoinventor
Life of this patent
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Abstract
An LCD having a filter is provided. The filter is located along a common voltage line Vcom or on a flexible printed circuit board between a regulator and a common voltage generator, thereby filtering a riffle noise occurring in a common voltage electrode and thus enhancing the display performance of an LCD panel.
Claims20
A liquid crystal display (LCD) comprising:
- a plurality of scan lines for supplying scan signals from a scan driver;
- a plurality of data lines for supplying data signals from a data driver;
- a panel having a plurality of pixels formed in regions where the plurality of scan lines intersect the plurality of data lines, the plurality of pixels receiving the scan signals and the data signals;
- a common voltage generator for supplying a common voltage to the plurality of pixels through a plurality of common voltage lines;
- and
- a filter provided at the plurality of common voltage lines for filtering a riffle noise arising at the common voltage generator.
3 more elements
A liquid crystal display (LCD) comprising:
- a plurality of scan lines for supplying scan signals from a scan driver;
- a plurality of data lines for supplying data signals from a data driver;
- a panel having a plurality of pixels formed in regions where the plurality of scan lines intersect the plurality of data lines, the plurality of pixels receiving the scan signals and the data signals;
- a common voltage generator for supplying a common voltage to the plurality of pixels in the panel through a plurality of common voltage lines, the plurality of common voltage lines forming a common node between the common voltage generator and the panel;
- and
- a filter interposed between the common voltage generator and the common node for filtering a riffle noise arising at the common voltage generator.
3 more elements
A liquid crystal display (LCD) comprising:
- a plurality of scan lines for supplying scan signals from a scan driver;
- a plurality of data lines for supplying data signals from a data driver;
- a panel having a plurality of pixels formed in regions where the plurality of scan lines intersect the plurality of data lines, the plurality of pixels receiving the scan signals and the data signals;
- a common voltage generator for supplying a common voltage to the plurality of pixels;
- a timing controller for supplying control signals to the data driver and the scan driver, the control signals supplied to the data driver for driving the panel;
- and
- a flexible printed circuit board for coupling the timing controller to the panel, the flexible printed circuit board having a filter for filtering a riffle noise occurring at a common voltage electrode.
4 more elements
Dependencies are inferred from the claim text.