Flexible OLED display device stripping method and flexible OLED display device

Abstract

The invention provides a flexible OLED display device stripping method. The method includes steps of coating one face of a carrier base plate with a film layer, wherein the carrier base plate is one among a glass board, an acrylic board and a rough-surface metal board and the material of the film layer includes at least one among naphthalene, phosphorus pentachloride, amine compound, poly alcohol compound and paraffin; forming a flexible substrate layer on the film layer; forming a low temperature polycrystalline silicon layer on the flexible substrate layer; forming a light emitting layer on the low temperature polycrystalline silicon layer; forming a packaging layer on the light emitting layer; heating the film layer until the substrate layer disengages from the carrier base plate. Therefore, the flexible OLED display device is obtained. According to the invention, the flexible OLED display device can be separate from the carrier base plate simply and a condition that the flexible substrate layer of the display device is difficult to separate from the carrier base plate is avoided and damage of the film in the OLED display device due to pulling is avoided. Thus, the yield of the OLED display device in the stripping process is increased.

Description

technical field [0001] The invention relates to the field of OLED display technology, in particular to a method for peeling off a flexible OLED display device and a flexible OLED display device. Background technique [0002] Using traditional methods to manufacture flexible OLED display devices, first coat PI on the substrate glass, LTPS process, evaporate EL and package, and then use laser lift-off technology to separate the PI layer from the substrate glass. In the preparation of flexible OLEDs, the display structure process of each layer is first completed on the substrate glass. Through laser stripping technology, the laser is irradiated on the substrate glass to separate the PI layer from the substrate glass. During the stripping process, not only the cost of laser equipment is high, but also If the energy of the laser cannot be precisely controlled, the laser will damage the OLED display device, and there are problems such as poor picture display on the surface of the ...

AI Technical Summary

Problems solved by technology

In the preparation of flexible OLEDs, the display structure process of each layer is first completed on the substrate glass. Through laser stripping technology, the laser is irradiated on the substrate glass to separate the PI layer from the substrate glass. During the stripping process, not only the cost of laser equipment is high, but also If the energy of the laser cannot be precisely controlled, the laser will damage the OLED display device, and there are problems such as poor picture display on the surface of the substrate glass and particles on the surface of the substrate glass, which will cause uneven laser energy received by the surface of the PI layer. It is difficult to peel off the parts with less laser light. During the peeling process, it may be pulled and cause the film layer (such as the EL layer, that is, the light-emitting layer) in the OLED display device to break, resulting in a decrease in the yield of the peeling process.

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