Liquid crystal cells – elements and systems – Particular structure – Interconnection of plural cells in parallel
Patent
1997-06-16
1999-05-11
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Interconnection of plural cells in parallel
349187, 345903, 345 1, 1563041, G02F1/133
Patent
active
059033282
ABSTRACT:
The present invention is a tiled, seamless-type, flat-panel display with improved light efficiency. The display consists of tiles that are bonded together during assembly with an index-matching adhesive, as is commonly known in the art. Prior to bonding the tiles, however, their adjoining edges are cut at an angle. The pixel pitch or aperture spacing of the display is maintained in the horizontal direction, while the tiles are vertically shifted. The distance from the center of the pixel nearest the edge to the cut in the aperture mask is made greater than one-half of a pixel. When viewed from above, the aperture mask is continuous. The overlapping edges of the tile cuts are positioned between the apertures, so as to better conceal the edges. The resulting display configuration produces an approximate doubling of the space available for sealing the tiles and allows the increasing of the aperture size of each pixel edge, using the same, minimum gap between adjacent tiles, allowing for increased pixel density (resolution). Continuous polarizer sheets are applied to the tile assembly during bonding, thereby eliminating the possibility of producing visual tile seam defects due to individual tile polarizer defects. Additionally, tri-color pixel designs are employed to maintain the color purity of the tiles in the display.
REFERENCES:
patent: 5056893 (1991-10-01), Holz et al.
patent: 5661531 (1997-08-01), Greene et al.
patent: 5673091 (1997-09-01), Boisdron et al.
patent: 5677784 (1997-10-01), Harris
patent: 5748268 (1998-05-01), Kalmanash
Greene Raymond G.
Skinner Dean W.
Parker Kenneth
Rainbow Displays Inc.
Sikes William L.
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