Back lighting device with central opening frame member and a unitized lamp and rigid radially extended terminals assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 2000
Grant Date -
N/A
app pub date -
Jan 29, 1998
filing date -
Jan 29, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A back lighting device is formed as an assembly of a frame, light waveguide, lamp and terminal assembly and a diffuser sheet. In one embodiment, the lamp and terminal assembly is received in a pocket through a rear opening in the frame and includes terminals having leg portions that are seated on seat portions in the pocket that optimally align a lamp member of the lamp and terminal assembly with an edge of the waveguide to provide optimum light transmission into the waveguide. The diffuser sheet covers the rear of the waveguide and extends across the rear opening of the pocket to limit the escape of light from the pocket and the waveguide to the rear of the back lighting device. The diffuser and frame are preferably molded of a white glass filled material that provides good diffusion of light reflected therefrom and reflects a maximum amount of diffused light back into the waveguide for transmission through a front surface for back lighting of a liquid crystal display or other light receiving member.
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