Method of making LCD device having alignment mark made of same m

Details Method of making LCD device having alignment mark made of same m Method of making LCD device having alignment mark made of same m

1997-10-14

1998-12-15

Sikes, William L.

Electrophotography

Image formation

Display of developed image

349 95, 349187, G02F 11335, G02F 1333, G02F 113

Patent

active

058502769

ABSTRACT:
To provide a liquid crystal display device and manufacturing method thereof for preventing a drop in the pixel slot opening and focus rates due to poor alignment precision of the drive substrate and microlens which face each other, and for improving the focus rate and production efficiency. A lens group comprised of a plurality of microlenses is integrated into the opposing substrate. A second alignment mark is formed at the desired position within the display area on the opposing substrate. This second alignment mark is formed along grooves between numerous protrusions having a semi-circular shaped cross section so the outer contours of the face form a cross shape of a specific width. These protrusions are made of the same material (for instance transparent plastic) and shape (semi-circular cross section) as those of the microlens at the display area, forming a lens shape. The second alignment mark is made together and simultaneously with the forming of the microlens in such a way that there is no deviation between the second alignment mark and the microlens opposite it.

REFERENCES:
patent: 5278685 (1994-01-01), Iwamoto et al.
patent: 5349453 (1994-09-01), Munakata
patent: 5629787 (1997-05-01), Tsubota et al.
patent: 5691794 (1997-11-01), Hoshi et al.

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