| US 7,545,343 B2 | ||
| Display device | ||
| Akihisa Ogino, Nara (Japan); and Sadahiko Yasukawa, Yamatokooriyama (Japan) | ||
| Assigned to Sharp Kabushiki Kaisha, Osaka (Japan) | ||
| Filed on Jan. 28, 2005, as Appl. No. 11/44,706. | ||
| Claims priority of application No. 2004-020595 (JP), filed on Jan. 28, 2004; and application No. 2004-375077 (JP), filed on Dec. 24, 2004. | ||
| Prior Publication US 2005/0184971 A1, Aug. 25, 2005 | ||
| Int. Cl. G09G 3/00 (2006.01) | ||
| U.S. Cl. 345—30 [345/104; 345/173; 345/174] | 6 Claims |
| 1. A display device, comprising:
a panel having a common electrode layer to which a voltage changing at a fixed frequency is applied;
a tabular member which is arranged at a fixed gap from said panel; and
an electrode layer which is arranged so as to be in nearly parallel to said tabular member and said panel is provided;
wherein a voltage generating electric field which changes the cycle of changing the electric field which is generated by applying
a voltage changing at a fixed frequency to said common electrode layer is applied to said electrode layer,
further comprising:
a common electrode signal-generating circuit for generating a voltage applied to said common electrode layer; and
a sound generation improving signal-generating circuit which carries out a fixed processing to a voltage which said common
electrode signal-generating circuit generated, preparing sound generation improving signals and applying these sound generation
improving signals to said electrode layer.
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