Microwave oven with NCAP liquid crystal operation display panel

Details Microwave oven with NCAP liquid crystal operation display panel Microwave oven with NCAP liquid crystal operation display panel

1996-05-23

1998-11-10

Leung, Philip H.

Electric heating

Microwave heating

With control system

219506, 219756, 345104, 349 16, H05B 668

Patent

active

058347453

ABSTRACT:
A heating apparatus such as a microwave oven includes a magnetron and a heating chamber for accommodating food to be heated by microwaves generated by the magnetron. The heating chamber has a front opening opened and closed by a door. An operation panel is mounted to be adjacent to the door. The operation panel includes a panel section and an operation section mounted on the panel section and has a function of displaying a plurality of pieces of cooking information. The operation section includes a liquid crystal element subsection including a nematic curvilinear aligned phase (NCAP) liquid crystal permitting light to pass through it when voltage is applied to it, an indicia subsection laid on the liquid crystal element subsection and having a plurality of indicias corresponding to the pieces of cooking information, respectively, and a switch subsection including a plurality of switches corresponding to the indicias of the indicia subsection, respectively. A heat-resistant panel frame is mounted between the door and the operation section. The panel frame cuts off heat transmission through a gap between the heating chamber and the door and heat transmission from the door to the liquid crystal element subsection.

REFERENCES:
patent: 4435047 (1984-03-01), Fergason
patent: 4447692 (1984-05-01), Mierzwinski
patent: 4549054 (1985-10-01), Aoyama
patent: 4568810 (1986-02-01), Carmean
patent: 4699470 (1987-10-01), McLaughlin et al.
patent: 4789858 (1988-12-01), Fergason et al.
patent: 5345067 (1994-09-01), Ohta et al.
patent: 5616270 (1997-04-01), Park

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