发明授权
US06610364B1 Apparatus for dispensing liquid crystal and method for controlling liquid crystal dropping amount 有权
用于分配液晶的装置和控制液晶滴下量的方法

  • 专利标题: Apparatus for dispensing liquid crystal and method for controlling liquid crystal dropping amount
  • 专利标题(中): 用于分配液晶的装置和控制液晶滴下量的方法
  • 申请号: US10134722
    申请日: 2002-04-30
  • 公开(公告)号: US06610364B1
    公开(公告)日: 2003-08-26
  • 发明人: Hyug-Jin KweonHae-Joon Son
  • 申请人: Hyug-Jin KweonHae-Joon Son
  • 优先权: KR2002-0010616 20020227
  • 主分类号: B05D500
  • IPC分类号: B05D500
Apparatus for dispensing liquid crystal and method for controlling liquid crystal dropping amount
摘要:
A liquid crystal dispensing apparatus and a method of controlling a liquid crystal dropping amount are provided to drop liquid crystal onto a substrate corresponding to at least one unit panel area. In one aspect, the apparatus uses a liquid crystal dispensing unit to dispense liquid crystal. The liquid crystal dispensing unit includes a nozzle having a discharging hole through which the liquid crystal is dropped onto the substrate, a needle moveable between a down position in which the needle blocks the discharging hole and an up position in which the needle is separated from the discharging hole, a spring member to bias the needle toward the down position, and a solenoid coil to provide a magnetic force to move the needle to the up position. The dropping amount liquid crystal dispensing unit may be electrically controlled by controlling the solenoid coil or by controlling a gas pressure used to drive the liquid crystal through the discharging hole. Variations and errors in the dropping amount may also be compensated by an automated compensation of the electric power to the solenoid and/or the gas pressure.
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