Coating device

Abstract

The invention discloses a coating device and relates to the technical field of liquid crystal display device manufacturing. The coating device includes a coating head and a supply portion for supplying a raw material to the coating head. The supply portion includes a first container and a second container which have different capacities, and the first container and the second container are connected with the coating head and selectively supply raw materials to the coating head. The first container in the coating device can be a small-capacity glass bottle, and the second container may be a large-capacity stainless steel tank. In the actual production process, if the small-volume production is performed, a small amount of raw materials are required, the glass bottle may be selected to supply the raw materials to the coating head, a large number of safety residual quantity is avoided, and thus raw material waste is reduced; if large-volume production is performed, a large amount of raw materials are required, the stainless steel tank can be selected to supply the raw materials to the coating head, frequent replacement of the glass bottle is avoided, and defoaming operation time is saved, thereby reducing the loss of productivity and increasing the rate of equipment utilization.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display equipment manufacturing, in particular to a coating equipment. Background technique [0002] In the manufacturing process of liquid crystal screens with switchable 2D display or 3D display, it is necessary to use coating equipment to coat liquid crystals in the effective display area of ​​the glass substrate. Coating equipment generally includes a coating head and a liquid crystal supply device. The liquid crystal is transported from the supply unit to the coating head, and is discharged onto the glass substrate through the coating head. At present, there are two common supply devices in the industry. One is a small-capacity glass bottle with a capacity of 500g and 1000g; the other is a large-capacity stainless steel tank with a capacity of 10L and 20L. . [0003] Due to the small capacity of glass bottles, glass bottles need to be replaced frequently during mass production, which...

AI Technical Summary

Problems solved by technology

Canned liquid crystals need to reserve about 200 grams of liquid crystals, which cannot be recycled and reused. Therefore, in small batch production, the consumption of liquid crystals is less, and using canned liquid crystals for liquid supply will lead to waste of liquid crystals

[0005] Therefore, there is an urgent need for a coating equipment that can be compatible with mass production and small batch production to avoid loss of production capacity or waste of liquid crystals

Images