Liquid crystal cell provided with bubble traps

Details Liquid crystal cell provided with bubble traps Liquid crystal cell provided with bubble traps

1989-09-06

1991-08-06

Hille, Rolf

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 81, G02F 113

Patent

active

050371851

ABSTRACT:
The liquid crystal cell comprises a volume divided by a separating wall into a main chamber and a secondary chamber which define an active surface and a passive surface respectively. The secondary chamber is partially filled with the liquid crystal and with a gas. According to the invention the cell comprises, in addition, compensation means for variations in the volume of the liquid crystal constituted by a secondary chamber divided into a plurality of compartments, a plurality of passage openings being provided in the separating wall so that the main chamber and the secondary chamber are intercommunicating.

REFERENCES:
patent: 4095876 (1978-06-01), Horsting et al.
patent: 4610510 (1986-09-01), Funada et al.
patent: 4645306 (1987-02-01), Akai

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