Pre-buckling fit method of curve surface touch screen

Abstract

The invention relates to a pre-buckling fit method of a curve surface touch screen. The curve surface touch screen comprises a protective cover plate, a touch screen and a liquid crystal display. The pre-buckling fit method comprises the following steps: (1) fitting the touch screen and the liquid crystal display to a plane so as to form a touch screen and liquid crystal display component; (2) putting the touch screen and liquid crystal display component into a buckled jig to fix; (3) heating the buckled jig, and softening and buckling the touch screen and liquid crystal display component gradually; and (4) fixing the softened and buckled touch screen, the liquid crystal display component and a protective cover plate into a fit jig of the vacuum fitting machine for buckled surface fit. The touch screen and liquid crystal display component is subjected to pre-buckling when the curve surface is fit, so that the circuit in a product can be protected, and the quality and the yield of the product can be ensured.

Description

technical field [0001] The invention relates to a touch panel of an intelligent product, in particular to a pre-bending bonding method of a curved touch screen. Background technique [0002] The material principle of the touch screen makes it need to be transparent, visible, and have good touch functions. Especially for the current wearable smart electronic products with touch, it is made of visible touch sensors, FPC and visible glass. The touch sensor is characterized by being visible, with an internal transparent touch pattern, and attached together with OCA to form a combined product. [0003] ITO is produced by vacuum sputtering, and it is a transparent particle product. Bending or touching during the production process may cause poor resistance on the product surface or cause ITO cracks, which will directly affect the function of the entire product. [0004] OCA is a transparent optical adhesive. It is easy to be deformed and scrapped when bent at a temperature exceed...

AI Technical Summary

Problems solved by technology

[0006] Curved touch screen products currently on the market can be made into a curved shape except for the cover plate, while the touch screen and display screen are basically flat. The display screens are all brittle products. Damage to the ITO and metal lines on the surface will directly affect the function of the entire product, making it unusable, and the entire product is likely to be scrapped during the bonding process of the curved surface

[0007] Because the touch screen and display screen in the product are flat products, it is necessary to place the product on a curved vacuum device for adsorption. During the adsorption process, it is easy to cause misalignment of the bonded product, alignment deviation, or even scrapping of the product. According to the product fit accurately, TP+LCM (touch + display full lamination module) placed under the curved surface is more difficult to absorb and easily break the vacuum, resulting in misalignment of the alignment accuracy with the casing, and air bubbles are prone to appear in the lamination, and the process is good. The rate is low, and the operation is more complicated, and it is difficult to maintain mass production