Head up display for a vehicle having a liquid crystal indicator

Computer graphics processing and selective visual display system – Image superposition by optical means

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Details

359630, 359640, 359 40, G09G 302

Patent

active

052911845

ABSTRACT:
Display apparatus for a vehicle in which the quality of the display image of the indicator is enhanced and displayed content of the display image can be changed without restraint. The display apparatus for a vehicle consists of a indicator and a prism which are integral with each other. On a third surface of the prism where the prism is held in contact with the indicator is formed a transparent electrode. Along an edge portion of a second surface is printed a spacer and a cover grass is mounted thereon. On an inner surface of the cover glass is formed a dot-matrix-type transparent electrode. Further, between the surface and the cover glass is sealed a nematic liquid crystal to form a twisted nematic cell (TN). On the cover glass is further disposed a polarizing plate, a dispersion plate, and a backlight.

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patent: 4756604 (1988-07-01), Nakatsuka et al.
patent: 4913529 (1990-04-01), Goldenberg et al.
patent: 5005009 (1991-04-01), Roberts
patent: 5028119 (1991-07-01), Hegg et al.
patent: 5157549 (1992-10-01), Suzuki et al.

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