Contrast improvement for display panels with masks between elect

Details Contrast improvement for display panels with masks between elect Contrast improvement for display panels with masks between elect

1993-09-24

1994-11-22

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 67, G02F 11343, G02F 11335

Patent

active

053673905

ABSTRACT:
A non-emissive flat panel display, such as an LCD having a plurality of pixels defined by the overlapping areas of row and column electrodes, is provided with a novel mask arrangement to block light from leaking through the interpixel spaces or gaps without electrically shorting the electrodes. The light-blocking mask is split into two parts, with one part deposited on each substrate to block the light from being transmitted through the inter-electrode gaps on the opposite substrate to improve the contrast ratio of the display.

REFERENCES:
patent: 4679043 (1987-07-01), Morokawa
patent: 4824213 (1989-04-01), Morokawa
patent: 5132816 (1992-07-01), Itoh et al.
patent: 5138473 (1992-08-01), Dijon et al.
Heinz Rieger, et al., "FLCD Showing High Contrast and High Luminance." SID 91 Digest, 1991, pp. 396-399.
T. Fukuchi, et al., "Self-Alignment Fabrication of ITO Electrode Pattern Electrodeposited Tricolor Filter in Black Matrix: An Application to STN-LCD." Japan Display '89, 1989, pp. 388-391.

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