LCD cover optical structure and method
AssigneeInternational Business Machines Corporation
InventorsRamesh R. Kodnani, Mark V. Pierson, William J. Rudik, David B. Stone
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Abstract
A large liquid crystal display optical structure can be created by providing a transparent substrate with a dark mesh pattern disposed thereon. A means for optical scattering is over, adjacent, or surrounding the dark mesh, with a polarizer laminated to a smooth surface of the means for optical scattering.
Claims12
A method for forming a liquid crystal display (LCD) composite from a plurality of LCD tiles, said method comprising the steps of:
- roughening a surface of a transparent substrate to provide optical scattering of light emitted from said LCD tiles through said substrate;
- plating or screening a mesh on said roughened external surface or cover seams between said LCD tiles;
- filling in holes within said mesh with an optically clear material to form a substantially flat surface;
- and
- forming a polarizing layer on said substantially flat surface.
A method of making a liquid crystal display composite comprising the steps of:
- applying a dark mesh to a transparent substrate;
- filling openings within said dark mesh with an optical scattering material by screening to avoid substantially covering said dark mesh with said scattering material and thereby forming a substantially flat surface from said dark mesh and said scattering material, said scattering material being substantially flush with a surface of said dark mesh opposite said transparent substrate;
- and
- placing a polarizer over said dark mesh and said optical scattering material.
A method of making a liquid crystal display structure comprising the steps of:
- applying a dark mesh to a transparent substrate;
- filling openings in said dark mesh with an optical scattering material;
- and
- placing a polarizer over said dark mesh and said optical scattering material;
- and
- wherein said filling step includes the steps of:
- laminating said optical scattering material over said dark mesh;
- and
- leveling said optical scattering material to a height equivalent to said dark mesh material.
A method of making a liquid crystal display comprising the steps of:
- applying a dark mesh to a transparent substrate;
- adding a transparent material to said surface of said transparent substrate between openings in said dark mesh;
- positioning an optical scattering material over said dark mesh;
- and
- applying a polarizer over said optical scattering material.
A liquid crystal display (LCD) composite comprising:
- a transparent substrate;
- a dark mesh distributed on a surface of said transparent substrate to cover seams between LCD tiles of said LCD composite;
- an optical scattering material on said transparent substrate filling holes in said dark mesh forming a substantially flat surface opposite said transparent substrate;
- and
- a polarizer layer on said substantially flat surface;
- and
- wherein a surface of said optical scattering material is substantially flush with said mesh to form said substantially flat surface.
A liquid crystal display structure comprising:
- a transparent substrate;
- a dark mesh distributed on a surface of said transparent substrate;
- a means for optical scattering positioned adjacent said dark mesh;
- a polarizer positioned on said means for optical scattering;
- and
- an optically clear adhesive on said substrate surface positioned between said dark mesh, which has a height equal to said dark mesh and wherein said optically scattering means comprises an optically scattering material having bottom surface adjacent a top surface of said dark mesh and said optically clear adhesive.
A liquid crystal display (LCD) composite comprising:
- a plurality of LCD tiles arranged in a two dimensional array;
- a transparent substrate having a roughened external surface to optically scatter light emitted from said LCD tiles through said substrate;
- a mesh material on said roughened external surface to cover seams between said LCD tiles;
- an optically clear material within said mesh to form a substantially flat surface;
- and
- a polarizing layer on said said substantially flat surface.
Dependencies are inferred from the claim text.