Liquid-crystal dropper and method, liquid-crystal display panel producing devices

Abstract

A liquid crystal dropping device is a device for dropping liquid crystal discharged from a discharge port of a liquid crystal dropping head to a predetermined drop area on a substrate, comprising: a discharge driving part for discharging liquid crystal from each discharge port of the liquid crystal dropping head; a control discharge driving part and a control device for controlling the discharge state of liquid crystal for each of the plurality of discharge ports, the control device performs the following control: when the drop object width W=n×L+α, and n is an integer, when α<1 During the painting process up to the last painting, the liquid crystal is discharged from all the discharge ports of the liquid crystal dropping head to the entire discharge width L, and in the last painting, the liquid crystal is only dripped to the remaining area that is to be the current drop. The liquid crystal is discharged from the discharge port corresponding to the partial discharge width α.

Description

technical field [0001] The invention relates to a liquid crystal dropping device and method and a liquid crystal display panel manufacturing device. Background technique [0002] Usually, liquid crystal is sealed between the upper substrate and the lower substrate, and the upper substrate and the lower substrate are bonded. The liquid crystal dropping device is a liquid crystal dropping device that drops the liquid crystal in the planned dropping area surrounded by the sealant of the lower substrate, and attaches the upper substrate to the lower substrate under reduced pressure so that no air bubbles remain in the liquid crystal. The bonding device is a sealant curing device that cures the sealant sandwiched between the upper substrate and the lower substrate. [0003] As a conventional liquid crystal dropping device, there are solutions disclosed in Japanese Patent Laying-Open No. 10-221666 and Japanese Laid-Open No. 2001-330840, that is, liquid crystals discharged from a ...

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to uniformly disperse the liquid crystal in the entire area of ​​the planned dropping area on the substrate, so the liquid crystal display accuracy is impaired.

[0006] ②The conventional liquid crystal dropping device has a structure that discharges a certain amount of liquid crystal from the entire discharge port of the liquid crystal dropping head. Therefore, it is impossible to control the dropping amount of liquid crystal in the area where the liquid crystal is to be dropped.

Images