Back membrane attachment device for flexible substrates and method thereof

Abstract

The invention discloses a back membrane attachment device for flexible substrates. The device comprises a workbench, above which a band-shaped membrane is arranged. The upper surface of the band-shaped membrane is provided with a pressure roller. When the pressure roller moves downward, the band-shaped membrane slopes down to drive one end of a membrane to be attached, close to the pressure roller, to fit a corresponding end of the substrate. When the pressure roller rolls on the upper surface of the band-shaped membrane in the horizontal direction, the lower surface of the membrane to be attached fits the upper surface of the substrate. A back membrane attachment method for flexible substrates comprises the following steps: respectively fixing the substrate and the membrane to be attachedon the workbench and the band-shaped membrane; moving the workbench to make the whole body of the substrate to be located below the membrane to be attached; driving the pressure roller to move downward until the membrane to be attached fit the end portion of the substrate; driving the pressure roller to roll until the lower surface of the membrane to be attached fits the upper surface of the substrate. According to the above scheme, the membrane to be attached fits the substrate through roll-in movement of the pressure roller, displacement of the membrane to be attached and the substrate willnot take place in the horizontal direction, no bubble will be generated during the attachment process, and the attachment precision is high.

Description

technical field [0001] The invention relates to the technical field of display panel production, in particular to a device and method for attaching a back film of a flexible substrate. Background technique [0002] With the development of display technology, more and more electronic devices begin to use flexible substrates that are thin and light and have good impact resistance. In the production process of flexible substrates, substrates need to be bonded with various film materials (back films), such as bonding with polarizers to change the light chromaticity of the substrates, bonding with protective films to protect the substrates from being scratched, Bond with OCA optical glue to achieve the purpose of finally bonding with the 3D glass cover. [0003] In the prior art, the attachment of the back film generally adopts the method of roller lamination, such as figure 1 As shown, the attaching device includes a lower workbench 1, an upper workbench 2 and a rolling mechan...

AI Technical Summary

Problems solved by technology

[0005] Although the above scheme can realize the attachment of the back film 5 and the flexible substrate 4, since the back film 5 is passively pulled under the pressing force of the roller 3, the downward force on the back film 5 will affect the attachment accuracy. very big

If the downward pressure on the back film 5 is large, air bubble lines are likely to be generated at the front end of the back film 5, and in severe cases, the flexible substrate 4 will be damaged; if the downward pressure on the back film 5 is small, the back film 5 is easy Slippage causes offset, resulting in low attachment accuracy

Images