Patent ID: 8052013
Filing Date: 2011-11-08
Classification: B05B

Abstract:
1. A liquid crystal dispensing apparatus, comprising: a liquid crystal container for containing liquid crystal material; a needle inserted into the liquid crystal container, the needle having a first end and a second end and for movement along an axis of the liquid crystal container; a spring arranged on the first end of the needle; a needle sheet having a discharging hole at a lower portion of the liquid crystal container; a nozzle including a support unit and a discharge opening through which liquid crystal material in the liquid crystal container is dispensable onto a substrate, the support unit being formed in the cylinder shape having a lower surface and a nut portion formed in the inner surface of the cylinder, the discharge opening being formed at the lower surface of the support unit; a magnetic bar arranged proximate the first end of the needle; and a solenoid coil arranged proximate the magnetic bar, the solenoid coil for exerting a magnetic force to the magnetic bar and for moving the needle toward the magnetic bar upon the application of an electric power, wherein the needle sheet includes a coupling portion having a nut portion and a bolt portion at two end portions and a needle contacting portion protruded from the coupling portion and including the discharging hole inside, the needle contacting portion and the coupling portion being formed as a unitary piece, the discharging hole inside the protruded needle contacting portion substantially conforming to a conical shape of the first end of the needle to control an amount of the liquid crystal dispensed from the nozzle, wherein the bolt portion of the liquid crystal container is inserted into the nut portion of the coupling portion of the needle sheet and the bolt portion of the coupling portion of the needle sheet is inserted into the nut portion of the nozzle.