Flexible substrate, manufacturing method thereof, and display device
A flexible substrate and flexible substrate technology, which is applied in the manufacture of semiconductor/solid-state devices, semiconductor devices, electrical components, etc., can solve the problems of fracture of the inorganic film layer, easy cracks in the inorganic film layer, affecting the display function of the flexible substrate, etc. The effect of prolonging the service life and enhancing the reliability
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Embodiment 1
[0037] Such as figure 1 As shown, this embodiment provides a flexible substrate, which may be a flexible OLED display substrate. The flexible substrate includes: a flexible substrate 1; a functional device on the flexible substrate 1; a protective layer 4 located on the side of the functional device away from the flexible substrate 1, the protective layer 4 has cracks caused by bending, and is used for A filling structure that will fill the cracks.
[0038] When the flexible substrate is bent, due to stress, the protective layer 4 at the bent position is prone to cracks. Moreover, in the subsequent process, due to stress release or external force (for example, external pressure during transportation), the cracks in the protective layer 4 will continue to expand, which may cause the protective layer 4 to break. However, in this embodiment, when the flexible substrate is bent, a filling structure is formed on the flexible substrate, and the filling structure is used to fill th...
Embodiment 2
[0044] Such as Figure 2 to Figure 6 As shown, this embodiment provides a method for preparing a flexible substrate, which can be used to prepare the flexible substrate provided in Embodiment 1.
[0045] Among them, the flexible substrate includes: a flexible substrate 1; a functional device on the flexible substrate 1, a protective layer 4 located on the side of the functional device away from the flexible substrate 1, and used to fill cracks in the protective layer 4 due to bending filling structure. Among them, the functional devices may include OLED devices, thin film transistors, and signal lines 2, etc.; the protective layer 4 may include structures such as encapsulation layer and top film 43.
[0046] The following takes the functional device as the signal line 2 as an example to describe this embodiment in detail.
[0047] The preparation method includes:
[0048] S1 , forming a signal line 2 on a flexible substrate 1 .
[0049] Such as figure 2 As shown, the con...
Embodiment 3
[0076] This embodiment provides a display device, including the flexible substrate provided in Embodiment 1.
[0077] Wherein, the display device may be an OLED display device, such as electronic paper, OLED panel, mobile phone, tablet computer, television, monitor, notebook computer, digital photo frame, navigator and any other product or component with display function.
[0078] In the display device in this embodiment, the filling structure is used to fill the cracks caused by bending in the protective layer, and the cracks are repaired to reduce the probability of the cracks expanding due to stress release. At the same time, the filling structure can effectively reduce the water , Oxygen and other corrosion to functional devices, thereby prolonging the service life of functional devices and enhancing the reliability of functional devices.
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