A method of making a curved display device

Abstract

The invention discloses a manufacturing method of a curved surface display device, which comprises the following steps: S1. Using a frame sealant to attach frame regions of a first substrate and a second substrate with unequal thermal expansion coefficients; S2. Heating the frame sealant , the first substrate and the second substrate, so that the sealant is cured to fix and bond the first substrate and the second substrate together, and at the same time cause the first substrate and the second substrate to produce different dimensional changes. In the present invention, the thermal expansion coefficients of the first substrate and the second substrate are different, during the heating process, a certain amount of temperature change occurs, and the thermal expansion coefficients of the first substrate and the second substrate are different, resulting in different dimensional changes . Since the frame sealant has fixed and bonded the first substrate and the second substrate together in the frame area, the different dimensional changes of the first substrate and the second substrate will cause the entire display panel to move toward the one with a large dimensional change. That side of the substrate is bent to form a curved display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for manufacturing a curved display device. Background technique [0002] In recent years, the development of curved display devices is getting faster and faster. Compared with the flat display device, the curved display device can bring better viewing effect, and can be made into a larger size with the same width. Curved surface display devices generally use flexible substrates such as plastic, metal sheets, or glass sheets as substrates. The bending method is generally to add external force to make the bending under heating, but the yield rate of products formed in this way is low. [0003] In order to solve the above problems, CN103984155A discloses a method for manufacturing a curved display device, which includes: using a sealant to bond the frame areas of the first substrate and the second substrate with unequal thermal expansion coefficients to obtain the box-ali...

AI Technical Summary

Problems solved by technology

However, the inventors have found in practice that if cooling deformation is used after the sealant is completely cured, the shape of the sealant will limit the deformation of the substrate to a certain extent, and the possibility of achieving curvature will be very small

In addition, if the thermal expansion coefficient of the substrate does not match the cooling coefficient of the sealant, it may cause the sealant to unseal and leak.