friction device

Abstract

The invention provides a friction device, which comprises a friction roller and a friction base, the friction base is used to carry the substrate to be rubbed, a friction cloth is arranged on the friction roller, and the friction roller is arranged on the friction Above the base platform, it is used to rub the substrate to be rubbed, and the rubbing device also includes a pre-rubbed substrate, and the rubbing roller can move relative to the pre-rubbed substrate along the surface of the pre-rubbed substrate. The pre-rubbing substrate is movable towards or away from the rubbing base. Compared with the prior art, the invention can reduce the pre-friction time, improve the production efficiency and reduce the workload of operators.

Description

technical field [0001] The invention relates to the manufacturing field of liquid crystal display devices, in particular to a rubbing device. Background technique [0002] In the manufacturing process of liquid crystal display panels, the rubbing process plays an important role, and the quality of the rubbing effect is directly related to the quality of the display panel. Rubbing process, that is, using a rubbing roller equipped with rubbing cloth to rub the polyimide (PI) film on the surface of the substrate, so that the surface of the PI film forms grooves with a certain pre-tilt angle that are uniformly arranged, ensuring that the liquid crystal molecules are evenly distributed along the grooves. arrangement. The hair direction and uniformity of the friction cloth on the surface of the friction roller directly determine the friction effect, that is, the effect of the PI film groove after friction. [0003] However, some debris will inevitably be generated during the rub...

AI Technical Summary

Problems solved by technology

[0004] First, it takes a long time and the efficiency is low; for example, under normal circumstances, 40 pre-rubbing substrates (usually glass substrates) are pre-rubbed, and it takes about 2 minutes to pre-rub a piece of pre-rubbed substrate, then the entire pre-rubbing is completed. The process takes about 80 minutes. The time of pre-rubbing plus the time of handling the pre-rubbing substrate makes the whole process take longer, which affects the subsequent rubbing process and reduces production efficiency;

[0005] Second, the number of pre-friction substrates occupied is large, and the number of fixed parts occupied is large, resulting in a large waste of production line resources;

[0006] Third, the surface conditions of different pre-rubbing substrates are different, and the impact on the cloth is different when rubbing, which affects the hair direction and uniformity of the rubbing cloth, thereby affecting the friction effect and product quality;

[0007] Fourth, the manual handling of fixing parts and pre-friction substrates reduces production efficiency and easily causes production accidents

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