Liquid crystal display device manufacturing method and liquid crystal display device manufacturing system

Abstract

There is provided a liquid crystal display device manufacturing method that comprises the steps of forming a sealing member along a periphery of a display area on a first surface of a first substrate, dropping a liquid crystal to the first surface of the first substrate from a top end of a liquid crystal supply needle provided to a lower end of a syringe in which the liquid crystal is filled, and dropping down the liquid crystal adhered to a surface of the liquid crystal supply needle onto the first substrate by an external force in a middle of dropping of the liquid crystal or after the liquid crystal is dropped. Accordingly, an amount of liquid crystal supplied to the substrate can be controlled with high precision.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a liquid crystal display device manufacturing method and a liquid crystal display device manufacturing system and, more particularly, a liquid crystal display device manufacturing method having the step of dropping a liquid crystal into a substrate from a syringe and a system used to manufacture the liquid crystal display device. [0003] 2. Description of the Prior Art [0004] The liquid crystal display device has a structure that the TFT substrate on which the pixel electrodes, the thin film transistors (TFTs), etc. are formed and the opposed substrate on which the opposed electrode, the color filters, etc. are formed are stuck together, and the liquid crystal sealed between the TFT substrate and the opposed substrate. [0005] As the method of sealing the liquid crystal between the TFT substrate and the opposed substrate, the vacuum injection method, the drop method, etc. are employed....

AI Technical Summary

Benefits of technology

[0015] It is an object of the present invention to provide a liquid crystal display device manufacturing method and a liquid crystal display device manufacturing system capable of supplying an amount of the liquid crystal to a substrate with high precision.

[0017] Accordingly, because the liquid crystal adhered to the liquid crystal supply needle is dropped by the external force to supply onto the substrate, such liquid crystal can be supplied onto the substrate by a high precision amount and thus the display of the liquid crystal display device becomes excellent.

[0018] Also, the above subject can be overcome by replenishing the liquid crystal into the syringe from the outside by the same defined amount as the liquid crystal dropped from the syringe such that the pushing force of the liquid crystal to the liquid crystal supply needle can be maintained constant and that the liquid crystal can be dropped from the liquid crystal supply needle at the speed not to left the liquid crystal on the surface of the liquid crystal supply needle of the syringe.

[0019] Accordingly, the liquid crystal is not left on the surface of the liquid crystal supply needle, and also the variation of the drop conditions of the liquid crystal can be suppressed because the drop of the liquid crystal by the same amount in the syringe can be started. As a result, the error of the liquid crystal amount in the liquid crystal display device can be reduced, and also the defective display of the liquid crystal display device can be reduced.

Problems solved by technology

If the adhered liquid crystal remains at the top of the needle, the precision in supplying the liquid crystal to the cell is lowered and thus the trouble occurs on the display.

In this case, there is such a disadvantage that the discharge precision of the liquid crystal is lowered under such condition.

Images