Patent ID: 8023096
Filing Date: 2011-09-20
Classification: G02F

Abstract:
1. A manufacturing method of a liquid crystal display panel which drips a liquid crystal onto one substrate of a pair of substrates, and pastes said first substrate and another substrate of the pair of substrates together using a seal material, said method comprising: performing pre-treatment steps in series prior to dripping said liquid crystal onto said one of said substrates, by combining treating steps, said pre-treatment steps comprise: a vacuum heat treatment step, which heats said liquid crystal in a decompressed environment of a liquid crystal dripping device for removing organic substances mixed in said liquid crystal; a vacuum treating step, which maintains said liquid crystal in the liquid crystal dripping device in a vacuum state for removing moisture or gas constituents mixed in said liquid crystal; a filtration treating step for removing foreign substances mixed in said liquid crystal by a filter having a bore diameter of at most 0.5 micrometers and an ion adsorbing member; and a liquid crystal dripping step for dripping said liquid crystal, to which said series of pre-treatment steps having been applied, onto one of said substrates by driving a liquid crystal discharging unit covered with a container in which a pure gas is being introduced; wherein said filtration treating step is also individually applied to said liquid crystal while said liquid crystal dripping step is being performed.