Method and system for fabricating a liquid crystal display by optically detecting anisotropic angular misalignment
AssigneeNEC Corporation
InventorTadashi Matsuzawa
Life of this patent
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Abstract
A liquid crystal display panel is placed on a fixed base and an anisotropic film is set in a position relative to the orientation layer of the display panel. Linearly polarized light is directed to the panel and the anisotropic film and light passing through them are detected, According to the intensity of the detected light, the angle of orientation of the anisotropic film is adjusted relative to the orientation layer. Angular misalignment, which may exist between the anisotropic film and the orientatiorn layer, is minimized.
Claims22
A method of fabricating a liquid crystal display, comprising the steps of:
- setting a liquid crystal display panel on a fixed base, said panel including a liquid crystal layer and an orientation layer on one surface of said liquid crystal layer;
- setting an anisotropic film relative to said orientation layer;
- directing linearly polarized light to said panel and said anisotropic film and detecting light therefrom;
- and
- adjusting angle of orientation of said anisotropic film relative to said orientation layer according to intensity of the detected light.
A method of fabricating a liquid crystal display, com prising the steps of:
- setting a liquid crystal display panel on a fixed base, said panel including a liquid crystal layer and an orientation layer on one surface of said liquid crystal layer;
- setting an optical compensation film and a polarizer relative to said orientation layer;
- directing linearly polarized light to said panel, said optical compensation film and said polarizer at a skewed angle and detecting light therefrom, said linearly polarized light having a polarization axis aligned with polarization axis of said polarizer;
- and
- adjusting angle of orientation of said optical compensation film relative to said orientation layer according to intensity of the detected light.
A system for fabricating a l iquid crystal display, comprising:
- base means for setting a liquid crystal display panel, said panel including a liquid crystal layer and an orientation layer on one surface of said liquid crystal layer;
- carrier means for setting an anisotropic film relative to said orientation layer;
- a light source for directing linearly polarized light to said panel and said anisotropic film;
- and
- an optical sensor for detecting the directed light from said anisotropic film,
- said carrier means being rotatable so that angle of orientation of said anisotropic film can be adjusted relative to said orientation layer according to intensity of the detected light.
A system for fabricating a liquid crystal display, comprisi ng:
- base means for setting a liquid crystal display panel, said panel including a liquid crystal layer and an orientation layer on one surface of said liquid crystal layer;
- carrier means for setting an optical compensation film and a polarizer relative to said orientation layer;
- a light source for directing linearly polarized light to said panel said optical compensation film and said polarizer at a skewed angle;
- an optical sensor for detecting the directed light from said polarizer,
- said linearly polarized light having a polarization axis aligned with polarization axis of said polarizer;
- and
- said carrier means being rotatable so that angle of orientation of said optical compensation film can be adjusted relative to said orientation layer according to intensity of the detected light.
Dependencies are inferred from the claim text.