OLED display panel and its preparation method
A display panel and display area technology, which is applied in the direction of identification devices, instruments, semiconductor devices, etc., can solve problems such as breakage, signal lines that are easily damaged by stress, and poor display of OLED display panels, so as to avoid breakage and improve bending resistance Fold performance, improve the effect of service life
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Embodiment 1
[0037] Such as figure 2 As shown, the OLED display panel 100 provided by the embodiment of the present invention includes a flexible substrate 101, and the surface of the flexible substrate 101 defines a display area 102, a bending area 103 at one end of the display area 102, and a flexible substrate 101. The binding area 104 on the back, the bending area 103 can be bent to the binding area 104, the signal wiring layer 105 is arranged in the bending area 103, and the signal wiring layer 105 is connected to the display The area 102 and the bonding area 104, generally, the signal wiring layer 105 includes a plurality of signal wirings, such as scanning lines, data lines and other metal wirings.
[0038] Further, a thin film transistor array layer is also arranged on the flexible substrate 101; an interlayer dielectric layer (InterLayer Dielectric, ILD) 106 is arranged on the thin film transistor array layer, wherein the signal wiring layer 105 is arranged on the on the ILD lay...
Embodiment 2
[0044] Such as image 3 As shown, the method for manufacturing the OLED display panel 100 provided by the embodiment of the present invention includes the following steps:
[0045] S10: Prepare a sacrificial layer on the glass 112 corresponding to the bending region 103, the sacrificial layer 113 is composed of a plurality of nanoparticles 1131, and prepare a flexible substrate 101 on the sacrificial layer 113 and the glass 112;
[0046] Specifically, such as Figure 4A As shown, generally, the flexible substrate 101 located in the bending region 103 is usually composed of multiple PI layers, so when coating the lowermost PI layer on the glass 112, a plurality of the nanoparticles 1131 is doped into the PI liquid, and then the lowermost PI layer of the flexible substrate 101 corresponding to the bending region 103 is transformed into the sacrificial layer 113, and the thickness of the sacrificial layer 113 is several hundred nanometers to several micrometers magnitude, and t...
Embodiment 3
[0064] Such as Figure 5 As shown, the embodiment of the present invention also provides a display device 200, the display device 200 includes the OLED display panel 100 in the first embodiment, the display device 200 can be a TV, a mobile phone, a notebook computer, a smart phone Display devices such as wearable display devices may also be other display devices. The display device 200 has all the beneficial effects of the OLED display panel 100 , which will not be repeated here.
[0065] The beneficial effects are: the OLED display panel provided by the present invention and the preparation method thereof provided by the present invention adjust the neutral layer in the bending area by arranging a buffer layer composed of patterned cavities on the flexible substrate corresponding to the bending area. Into the signal wiring layer, the signal wiring is prevented from being broken due to stress damage, and the bending resistance of the bending area is improved, thereby improving...
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