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Pre-friction device and pre-friction method

A pre-friction and pre-friction plate technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of uneven friction hair, poor pre-friction effect of friction cloth, etc., and achieve excellent uniformity, improved quality, and uniform fiber structure. The effect of sexual assurance

Inactive Publication Date: 2018-06-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a pre-rubbing device and a pre-rubbing method, which can solve the problems of poor pre-rubbing effect of the rubbing cloth and uneven friction hair, thereby reducing defects such as abnormal orientation of the liquid crystal display panel.

Method used

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  • Pre-friction device and pre-friction method
  • Pre-friction device and pre-friction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a kind of pre-friction device, comprising:

[0042] transmission structure;

[0043] a pre-friction plate carried on the transmission structure and used for friction with the friction cloth;

[0044] a friction roller arranged above the pre-friction plate for winding friction cloth;

[0045] a control unit, configured to perform a control operation so that the pre-friction plate can form surface contact with the friction cloth wound on the friction roller and along the Do reciprocating motion in the direction parallel to the axis.

[0046] In this embodiment, during the pre-rubbing process of the friction cloth, the friction roller continues to rotate, and the pre-friction plate forms surface contact with the friction cloth wound on the friction roller, and reciprocates along the direction parallel to the axial direction of the friction roller. A pre-friction plate is used for pre-friction, so the uniformity of the fiber structure of the fric...

Embodiment 2

[0058] This embodiment provides a pre-friction method, which is applied to the above-mentioned pre-friction device, and the pre-friction method includes:

[0059] Wrapping the rubbing cloth on the rubbing roller;

[0060] adjusting the distance between the friction roller and the pre-friction plate, so that surface contact is formed between the friction cloth and the pre-friction plate;

[0061] The friction roller is controlled to rotate around the axis in a clockwise or counterclockwise direction, and the pre-friction plate is controlled to reciprocate in a direction parallel to the axial direction of the friction roller.

[0062] In this embodiment, during the pre-rubbing process of the friction cloth, the friction roller continues to rotate, and the pre-friction plate forms surface contact with the friction cloth wound on the friction roller, and reciprocates along the direction parallel to the axial direction of the friction roller. A pre-friction plate is used for pre-f...

Embodiment 3

[0067] Such as figure 1 As shown, the existing pre-friction method is to wind the friction cloth 2 on the friction roller 1, and roll it on the bearing platform at a preset speed, and the substrate substrate 3 is driven in a direction perpendicular to the axial direction of the friction roller 1. The prior art Hundreds of base substrates 3 and rubbing cloth 2 are often driven in turn for pre-rubbing. Since the base substrate 2 is driven in one direction, the friction hairs on the rubbing cloth after pre-rubbing are as follows: figure 2 As shown, it can be seen that the distribution of friction hair is relatively concentrated.

[0068] The pre-friction device provided in this embodiment includes: a bearing platform; a guide rail arranged on the bearing platform, a pre-friction plate carried on the guide rail for rubbing with the friction cloth; a pre-friction plate arranged above the pre-friction plate for winding the friction cloth The friction roller, wherein the axial dire...

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Abstract

The invention provides a pre-rubbing device and a pre-rubbing method, and belongs to the technical field of liquid crystal display. The pre-rubbing device comprises a transmission structure, a pre-rubbing plate which is supported on the transmission structure and used to rub with a rubbing cloth, a rubbing roller arranged above the pre-rubbing plate and used to wind the rubbing cloth, and a control unit used to execute control operation, so that under a condition that the rubbing roller rotates around a shaft, the pre-rubbing plate forms surface contact with the rubbing cloth winded on the rubbing roller, and the pre-rubbing plate does reciprocating motion along a direction parallel to the axial direction of the rubbing roller. The technical scheme can solve problems that pre-rubbing effect of a rubbing cloth is poor and rubbing fur is not uniform, so as to reduce defects of abnormal orientation of a liquid crystal display panel.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a pre-rubbing device and a pre-rubbing method. Background technique [0002] In the manufacturing technology of liquid crystal displays, a rubbing alignment process is usually used to pre-process the alignment of liquid crystal molecules. The main process of the rubbing alignment process includes: placing the substrate coated with polyimide film (Polyimide film, referred to as PI film, also known as alignment film) on the carrying platform; rubbing cloth (Rubbing cloth) pre-wrapped on the surface The roller (Rubbing roller) rolls on the bearing platform at a preset speed, thereby driving the rubbing cloth to roll over the surface of the orientation film on the substrate with a certain pressure; during the rolling process of the rubbing cloth, the fibers (Pile) on the surface of the rubbing cloth Interact with the surface of the alignment film to form grooves on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337
CPCG02F1/133784
Inventor 杨艳李京鹏李建李东朝范宇光谢世义
Owner BOE TECH GRP CO LTD