Processing method for improving friction effect in LCD fabrication
A technology of liquid crystal display and processing method, which is applied in instruments, nonlinear optics, optics, etc., can solve the problems of poor PI white bar 10, inspection, and poor quality of LCD products.
Inactive Publication Date: 2009-06-24
深圳市合力泰光电有限公司
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Problems solved by technology
[0008] Usually, the occurrence rate of PI white stripe 10 defect caused by the change of friction strength is very high (almost 100%), which cannot be detected before the box is assembled under the current LCD manufacturing process detection method, and it is manifested as a poor display of the LCD after the box is assembled, so Increased difficulty in control methods
At the same time, the cost of scrapping semi-products / finished products is greatly wasted, and there is a certain degree of recessiveness in the mild defects that cannot be detected, which has a very bad impact on the quality of LCD products.
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[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] Please refer to figure 1 and Figure 4 As shown, the production process of liquid crystal display is as follows: first, clean the large piece of glass containing ITO layer 2 before putting it into use, then coat the photoresist on the glass of ITO layer 2, and then use the prepared required The pattern (on the chrome plate) is irradiated by the light source, and the glass of the ITO layer 2 coated with photoresist is exposed; then the glass of the exposed ITO layer 2 is developed, and then the unnecessary ITO layer 2 is etched (the required pattern will be...
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Abstract
The invention provides a processing method for improving the rubbing effect in liquid crystal display (LCD) manufacture. A friction roller of a rubbing machine is utilized to conduct oriented friction treatment in a certain direction on the surface of a PI layer of an LCD; a detection procedure is set on the rubbing machine; during the treatment, the detection procedure is utilized to detect change of the maximum dynamic friction torque in the rubbing machine, and parameters of the thickness of a rubbing cloth or parameters of the indentation amount of the rubbing cloth on the friction roller are correspondingly adjusted; when the friction is produced in LCD manufacture, the force borne by the PI layer can be measured by test data of the detection procedure of the maximum dynamic friction torque on the rubbing machine; during the treatment, the detection procedure can capture the value of the maximum dynamic torque when the PI layer bears a force, and record and save the value; and the change of the frictional strength is judged through detecting the changing status of the maximum dynamic friction torque, so as to achieve the control of the frictional strength and effectively solve the problem of bad friction caused by the change of the frictional strength.
Description
technical field [0001] The invention belongs to a method for manufacturing a liquid crystal display, in particular to a treatment method for improving the friction effect in the manufacture of a liquid crystal display. Background technique [0002] Rubbing (Rubbing) alignment technology has always been the most mature, reliable and most widely used alignment technology in the manufacturing process of Liquid Crystal Display (LCD). [0003] like figure 1 As shown, taking a CSTN (Color Super Twist Nematic) liquid crystal display as an example, its liquid crystal display includes upper and lower substrates 1 and a liquid crystal layer 7 placed between the upper and lower substrates 1, the liquid crystal layer 7 is distributed on the PI (Polymide, polyimide) layer 6, and the lower layer of the PI layer 6 is the TOP layer 3 (the material is SiO 2 , mainly plays the role of insulation), between the TOP layer 3 and the substrate 1 is the ITO layer 2 (indium tin oxide glass, main c...
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IPC IPC(8): G02F1/1337
Inventor 胡代冬
Owner 深圳市合力泰光电有限公司