Protective film and manufacturing method thereof, flexible panel and manufacturing method thereof, and display device

Abstract

The invention relates to the display technology field, and provides a protective film and a manufacturing method, a flexible panel and the manufacturing method, and a display device. The protective film is attached to a flexible substrate, the flexible substrate includes a straight area and a bent area, the protective film includes a protective film body, and a plurality of blind holes are arranged in one surface, attached to the flexible substrate, of the protective film body. When the protective film is attached to the flexible substrate, an orthographic projection of one part of the blind holes in the flexible substrate is located in the bent area, and the orthographic projection of the other part of the blind holes in the flexible substrate is located in the straight area. The protective film forms negative pressure through the blind holes to be attached to the flexible substrate, bonding through an adhesive layer is not needed, ashes cannot be generated in a laser cutting process,problems of a short circuit and the like are avoided, and a percent of pass is increased. When the protective film is bent towards one side of the blind holes, the blind holes can provide an extrusion space for the protective film, and when the protective film is bent towards one side deviating from the blind holes, the blind holes can provide an extension space for the protective film so that astress of a bending area is reduced, and potential quality hazards are decreased.

Description

Technical field [0001] The present invention relates to the field of display technology, in particular to a protective film and a manufacturing method of the protective film, a flexible panel with the protective film applied, a manufacturing method of the flexible panel, and a display device with the flexible panel installed. Background technique [0002] In recent years, flexible display devices prepared with polyimide flexible substrates instead of glass substrates have received extensive attention, and there are more and more applications in the display field. Compared with rigid displays, flexible displays are foldable, bendable, and easy to carry, providing more design ideas for terminal products. [0003] In the manufacturing process of flexible displays, a protective film is generally pasted on the back of the flexible substrate through an adhesive layer to protect the flexible substrate; however, in the subsequent laser cutting process, the adhesive layer will generate ashe...

AI Technical Summary

Problems solved by technology

[0003] In the production process of flexible displays, a protective film is generally pasted on the back of the flexible substrate through an adhesive layer to protect the flexible substrate; rate reduction

Moreover, after attaching the protective film to the flexible substrate, it is necessary to bend the flexible substrate to perform a modular process on the flexible substrate. The existing protective film has a large stress at the bending position, which has hidden quality problems.

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