Control method of molding shape in glass base plate production

Abstract

The invention relates to a control method of a molding shape in glass base plate production, which is characterized in that the control method comprises the following steps of: applying a first acting force (F1) and a second acting force (F2) to a glass plate from the left side of the glass plate along the horizontal direction between a stress removing zone and a cutting device zone, and simultaneously applying a third acting force (F3) and a fourth acting force (F4) to the glass plate from the right side of the glass plate along the horizontal direction. The control method used in the glass base plate production has the advantages that 1 the transection stability of the glass plate is improved so that the cutting loss is greatly reduced, and production yield is improved; 2 the form of glass plate is stable between the stress removing zone and a cutting device zone so that the warping and stress stability is greatly improved; and 3 the size adjustment of the molding shape for the form of the glass plate between the stress removing zone and a cutting device zone is favorable for the control on the deflection of the glass plate.

Description

technical field [0001] The invention relates to a method for controlling molding shape in glass substrate production. Background technique [0002] Thin glass mainly refers to liquid crystal glass substrates used in flat panel display technology. This glass substrate has high heat resistance, high transparency, low moisture absorption, high flatness, good solvent resistance, scratch resistance, strong acid resistance, and strong alkaline properties. The thickness of the thin plate glass is between 0.3mm and 1.0mm. [0003] Liquid crystal flat panel display technology has very strict requirements on the stress of the glass substrate. If the stress of the substrate cannot be guaranteed to be within the acceptable range, problems such as cracking and deformation of the substrate will occur during the manufacturing process of the manufacturer, which will directly affect the production of the display. Moreover, even if it is put on the market, the glass plate surface may be def...

AI Technical Summary

Problems solved by technology

[0003] Liquid crystal flat panel display technology has very strict requirements on the stress of the glass substrate. If the stress of the substrate cannot be guaranteed to be within the acceptable range, problems such as cracking and deformation of the substrate will occur during the manufacturing process of the manufacturer, which will directly affect the production of the display. Moreover, even if it is put on the market, the glass plate surface may be deformed or cracked during consumption and use, which will directly affect the display effect of the liquid crystal display. Therefore, it is very important to do a good job of annealing in the production process of liquid crystal glass substrates and effectively eliminate stress.

[0004] Among the several mature methods for producing liquid crystal display glass substrates, the overflow molding method is the most popular and relatively mature, but this process has high requirements for the control of the production process and production environment, especially in the production process. , the instability of product quality leads to high product loss rate and poor consistency of glass plate. Shape changes continuously in the stress relief area

Images