Backlight for liquid crystal display
Assignee3M Innovative Properties Company
InventorsJohn C. Schultz, Robert L. Brott, Michael J. Sykora
Life of this patent
Estimating the term…
Abstract
A backlight includes a lightguide having a light emission surface, a first light input surface, a second light input surface opposing the first light input surface, and a lightguide thickness. A plurality of antireflection features are on or in the first light input surface and second light input surface. Each antireflection feature has a base length value and a height value that are less than the light guide thickness. A right eye image solid state light source is positioned to provide light into the first light input surface and a left eye image solid state light source is positioned to provide light into the second light input surface.
Claims22
A backlight, comprising,
- a lightguide having a light emission surface, a first light input surface, a second light input surface opposing the first light input surface, and a lightguide thickness, a plurality of antireflection features are on or in the first light input surface and second light input surface, each antireflection feature has a base length value and a height value that are less than the light guide thickness;
- and
- a right eye image solid state light source positioned to provide light into the first light input surface, and a left eye image solid state light source positioned to provide light into the second light input surface.
A backlight, comprising,
- a lightguide having a light emission surface, a first light input surface, a second light input surface opposing the first light input surface, and a lightguide thickness, a plurality of antireflection features are on or in the first light input surface and second light input surface, each antireflection feature has at least two surfaces comprising an antireflection layer or light absorption layer;
- and
- a right eye image solid state light source positioned to provide light into the first light input surface, and a left eye image solid state light source positioned to provide light into the second light input surface.
A display apparatus, comprising;
- an autostereoscopic liquid crystal display panel;
- and
- a backlight positioned to provide light to the autostereoscopic liquid crystal display panel, the backlight comprising:
- a lightguide having a light emission surface, a first light input surface, a second light input surface opposing the first light input surface, and a lightguide thickness, a plurality of antireflection features are on or in the first light input surface and second light input surface, each antireflection feature has a base length value and a height value that are less than the light guide thickness;
- and
- a right eye image solid state light source positioned to provide light into the first light input surface, and a left eye image solid state light source positioned to provide light into the second light input surface.
A display apparatus, comprising;
- an autostereoscopic liquid crystal display panel;
- and
- a backlight positioned to provide light to the autostereoscopic liquid crystal display panel, the backlight comprising:
- a lightguide having a light emission surface, a first light input surface, a second light input surface opposing the first light input surface, and a lightguide thickness, a plurality of antireflection features are on or in the first light input surface and second light input surface, each antireflection feature has at least two surfaces comprising an antireflection layer or light absorption layer;
- and
- a right eye image solid state light source positioned to provide light into the first light input surface, and a left eye image solid state light source positioned to provide light into the second light input surface.
Dependencies are inferred from the claim text.