Electro-optic display system with improved viewing angle

Details Electro-optic display system with improved viewing angle Electro-optic display system with improved viewing angle

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G02F 1/01 (2006.01) G02F 1/03 (2006.01) G02F 1/133 (2006.01) G02F 1/1347 (2006.01) G02F 1/139 (2006.01)

Patent

CA 1223951

- 29 - Abstract of the Disclosure A method and an apparatus provide an optical switching system (10) which provides independent of viewing angle two system optical transmission states of substantially contaminant-free light. The system includes first and second light gates (12 and 12') of which each has associated therewith contaminant light intensity patterns (48 and 66) with points of local maxima (54, 56, 58, 60, 68, and 70) and local minima (62 and 72) in two system optical transmission states. The contaminant light intensity patterns are oriented so that the points of local maxima and minima of the contaminant light intensity patterns of one of the light gates generally align with the respective points of local minima and maxima of the contaminant light intensity patterns of the other light gate. The alignment of contaminant light intensity patterns blocks the transmission of contaminant light in two system optical transmission states, and thereby provides improved viewing angle performance.

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