Planar light-emitting device and display apparatus having...

Details Planar light-emitting device and display apparatus having... Planar light-emitting device and display apparatus having...

2011-04-19

2011-04-19

Shea, Sandra L O (Department: 2875)

Illumination

Edge lighted panel

Light source

C362S615000, C362S616000, C362S097100, C362S097200, C362S097300, C362S097400

Reexamination Certificate

active

07926999

ABSTRACT:
A planar light-emitting device includes an elongate first lightguide plate (13) having a light entrance end surface (13a) disposed facing an exit surface (12a) of a light-emitting package (12), a reflecting side surface (13b) extending substantially at right angles to the light entrance end surface to reflect light entering through the light entrance end surface, and a light exit side surface (13c) facing the reflecting side surface, and a flat plate-shaped second lightguide plate (14) having a light entrance side edge surface (14a) facing the light exit side surface (13c). The first lightguide plate is configured to satisfy the condition of t1<t2≦t3,where: t1, t2and t3are the respective heights of the light exit side surface (13c), the reflecting side surface (13b) and the light entrance end surface (13a). The surfaces of the first lightguide plate other than the light entrance end surface (13a) and the light exit side surface (13c) are reflecting surfaces.

REFERENCES:
patent: 7014347 (2006-03-01), Okuwaki
patent: 7128459 (2006-10-01), Igarashi et al.
patent: 7188989 (2007-03-01), Miyashita
patent: 7309154 (2007-12-01), Ohkawa
patent: 2005/0180165 (2005-08-01), Sado et al.
patent: 2006/0034579 (2006-02-01), Sugiura
patent: 2004-265797 (2004-09-01), None

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