Liquid crystal cell with a glass solder seal

Details Liquid crystal cell with a glass solder seal Liquid crystal cell with a glass solder seal

1978-03-10

1979-06-19

Bauer, Edward S.

350344, 65 58, G02F 113

Patent

active

041584856

ABSTRACT:
A liquid crystal cell having a chamber for receiving a layer of liquid crystal material which chamber is defined by a pair of plate members joined together adjacent their edges by a substantially continuous glass solder seal characterized by the glass solder seal being provided in the form of one or more glass fibers which are interposed between the plates and fused to form the glass solder seal. To facilitate positioning the one or more glass solder fibers, positioning means are provided on one surface of one of the plates and may be protruberances which are formed either by crystallizing glass solder, or by laser bombardment of the one surface. To facilitate the obtaining of the desired spacing between the plates, each of the glass fibers may have a core which may be either hard glass or a metal such as gold which core is surrounded by a lower melting glass so that during fusion of the fiber, the core remains substantially unmelted. In another embodiment, the glass fibers contain a material, such as being impregnated with CuO, which will absorb infrared radiation so that during the method of forming the cell, the step of heating to fuse the fibers includes subjecting the fibers to infrared radiation after preheating the assembled plates and fibers.

REFERENCES:
patent: 3862830 (1975-01-01), Stern
patent: 3960534 (1976-06-01), Oates
patent: 3995941 (1976-12-01), Nagahara et al.
patent: 4050786 (1977-09-01), Feldman

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