Direct back light unit with heat exchange

Illumination – Illuminated scale or dial – Internal light source

Reexamination Certificate

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Details

C362S294000, C349S058000

Reexamination Certificate

active

07101055

ABSTRACT:
A backlight unit with high thermal dissipation. The back light unit includes a light source generator positioned in a backside of a display panel for providing light beams to the display panel, a diffuser positioned between the light source generator and the display panel for uniformly scattering light beams from the light source generator to the display panel, and a housing enclosing the light source generator and connecting to the diffuser for reflecting the light beams to the diffuser. The housing further includes a heat pipe for being a heat transfer interface between the back light unit and an external environment.

REFERENCES:
patent: 4729076 (1988-03-01), Masami et al.
patent: 6089739 (2000-07-01), Yamamoto et al.
patent: 6417832 (2002-07-01), Skinner et al.
patent: 6515857 (2003-02-01), Ford et al.
patent: 6697130 (2004-02-01), Weindorf et al.
patent: 6847173 (2005-01-01), Berthou et al.
patent: 2002/0113919 (2002-08-01), Liu et al.
patent: 2003/0039113 (2003-02-01), Murr et al.
patent: 2003/0053007 (2003-03-01), Higashi
patent: 2005/0007755 (2005-01-01), Yu et al.
patent: 08-136918 (1996-05-01), None
Kobayashi et al., English Translation of JP 08136918 A, pp. 1-7.

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