Liquid crystal cells – elements and systems – Particular structure – Holder – support – frame – or housing
Reexamination Certificate
2006-12-06
2009-06-09
Duong, Thoi V (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Holder, support, frame, or housing
C362S632000
Reexamination Certificate
active
07545459
ABSTRACT:
A display apparatus includes a flat display panel, and a housing which surrounds the display panel. The housing includes a backboard portion facing the display panel and a sound emitting portion. A vibrating plate is arranged in a region corresponding to the sound emitting portion between the display panel and the backboard portion of the housing. A first spacer is attached to a rim portion of one surface of the vibrating plate, the first spacer being interposed between the vibrating plate and one of the backboard portion of the housing and the display panel. A second spacer is attached to a rim portion of the other surface of the vibrating plate, the second spacer being interposed between vibrating plate and the other of the backboard portion of the housing and the display panel. The first and second spacers are made of materials having different degree of hardness.
REFERENCES:
patent: 7397520 (2008-07-01), Kobayashi et al.
patent: 2005/0129261 (2005-06-01), Ito et al.
patent: 2004-335293 (2004-11-01), None
Fujiwara Atsushi
Ito Fumihisa
Matsui Hisayoshi
Matsui Yukihiro
Casio Computer Co. Ltd.
Duong Thoi V
Frishauf Holtz Goodman & Chick P.C.
Taiyo Yuden Co. Ltd.
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