Back to results
US 5,688,035 AGranted
Backlighting device free of a bright line
AssigneeTosoh Corporation
InventorsKeiji Kashima, Naoki Yoshida
Life of this patent
Estimating the term…
Abstract
A light reflector covers a linear light source that is disposed adjacent to a light incident end face of a light conducting plate. The interval between the end portions of the light reflector adjacent to the light incident end face of the light conducting plate is made smaller than the thickness of the light incident end face. Alternatively, the light-exit-side portion of the light reflector located between the linear light source and the light incident end face of the light conducting plate is disposed within the thickness of the light incident end face.
Claims10
A backlighting device for a panel, comprising:
- a light conducting plate made of a transparent material, and having a function of outputting light from a light exit major surface thereof;
- a linear light source disposed adjacent to at least one end face of the light conducting plate;
- and
- a light reflector covering the linear light source, an inner surface of a light-exit-side portion of the light reflector located between the linear light source and the end face of the light conducting plate being disposed inside an extension of the light exit major surface of the light conducting plate, and an outer surface of the light-exit-side portion of the light reflector located between the linear light source and the end face of the light conducting plate being disposed substantially at the same level as or outside the light exit major surface of the light conducting plate, wherein an end portion of the light-exit-side portion of the light reflector has a step portion that engages the light conducting plate.
1 more element
Dependencies are inferred from the claim text.