Patent ID: 10581027

Abstract:
According to a flexible OILED device production method of the present disclosure, after an intermediate region. (30i) and a flexible substrate region (30d) of a plastic film (30) of a multilayer stack (100) are divided, the interface between the flexible substrate region (30d) and a glass base (10) is irradiated with laser light. The multilayer stack (100) separated into the first portion (110) and the second portion (120) while the multilayer stack (100) is kept in contact with the stage (210). The first portion (110) includes a plurality of OLED devices (1000) which are in contact with stage (210). The OLED devices (1000) include a plurality of functional layer regions (20) and the flexible substrate region (30d). The second portion (120) includes the glass base (10) and the intermediate region (30i). The step of irradiating with the laser light includes forming the laser light from a plurality of arranged laser light sources such that the irradiation intensity of the laser light for at least part of the interface between the intermediate region (30i) and the glass base (10) is lower than the irradiation intensity of the laser light for the interface between the flexible substrate region (30d) and the class base (10).