Liquid crystal cells – elements and systems – Nominal manufacturing methods or post manufacturing... – Sealing of liquid crystal
Reexamination Certificate
2007-11-06
2007-11-06
Nelms, David (Department: 2871)
Liquid crystal cells, elements and systems
Nominal manufacturing methods or post manufacturing...
Sealing of liquid crystal
C349S153000
Reexamination Certificate
active
11321080
ABSTRACT:
A method for forming an LCD device, a sealant dispensing apparatus and an LCD device manufactured by the sealant dispensing apparatus. The method includes preparing lower and upper substrates; dispensing liquid crystal on any one of the lower and upper substrates; forming a main sealant having no inlet on any one of the lower and upper substrates; forming an auxiliary sealant in the periphery of the main sealant on any one of the lower and upper substrates; and bonding the lower and upper substrates to each other; wherein the main and auxiliary sealants are formed at the same time. The sealant dispensing apparatus includes a syringe having main and auxiliary nozzles for discharging sealant. The auxiliary nozzle rotates revolves around the main nozzle. The spacing between the main nozzle and the auxiliary nozzle may be controlled to control the interval between the auxiliary and the main sealants.
REFERENCES:
patent: 6791660 (2004-09-01), Hayashi et al.
patent: 7061560 (2006-06-01), Cheng et al.
patent: 2004/0090589 (2004-05-01), Jung et al.
patent: 2006/0139563 (2006-06-01), Momose et al.
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