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US 8,264,622 B2Granted
Light guides
AssigneeITI Scotland Limited
InventorJames Gourlay
Life of this patent
Estimating the term…
Abstract
This invention relates to film layer which is suitable for use in a light guide plate and methods of forming said film layer and light guide plate. The invention also relates to the light guide plate and light guide devices made therefrom. The film and light guide plate are suitable for use in a range of applications, particularly in connection with the backlighting of displays, for example, liquid crystal displays.
Claims21
A light guide plate comprising:
- a first layer of light guiding material in contact with a layer of film, wherein said layer of film has formed on at least one surface of:
- i. a series of microstructures, wherein said microstructures allow light inside the light guide plate to escape therefrom;
- and
- ii. an ink in contact with said microstructures, wherein said ink reduces the amount of light escaping from the light guide plate at said microstructures,
- wherein the layer of film has a thickness of about 0.05 mm to about 0.25 mm.
2 more elements
A light guide plate comprising:
- a first layer of light guiding material in contact with a layer of film, wherein said layer of film has formed on at least one surface of:
- i. a series of microstructures, wherein said microstructures allow light inside the light guide plate to escape therefrom;
- and
- ii. an ink in contact with said microstructures, wherein said ink reduces the amount of light escaping from the light guide plate at said microstructures,
- wherein the thickness of the first layer of light guiding material is about 1 mm.
2 more elements
Dependencies are inferred from the claim text.