Organic light-emitting diode (OLED) display panel and manufacturing method thereof

Abstract

The invention relates to an OLED display panel and a manufacturing method thereof. The OLED display panel comprises a TFT array substrate, organic light emitting units, a first retaining wall, a second retaining wall, a groove and a film packaging structure. The organic light emitting units are arranged in the display region, and the first and second barrier walls are arranged in the non-display region. The groove is formed in a position corresponding to a gap between the first and second barrier walls, and arranged in a laminated structure of an insulating layer of the TFT array substrate andincludes an exposed opening. The film packaging structure covers the component. Especially, the groove is arranged in a straight side area, and thus, a height difference is formed between the straight side area and a corner area in the TFT array substrate. Thus, the risk that an organic layer of the film packaging structure is overflow in the corner area can be reduced.

Description

technical field [0001] The present application relates to a display technology, in particular to an organic light emitting diode (organic light emitting diode) display panel and a manufacturing method thereof. Background technique [0002] Compared with a liquid crystal display (LCD), the organic light emitting diode display has the biggest advantage that the OLED display can realize flexible display. However, OLED devices are particularly sensitive to water and oxygen. In order to prevent the intrusion of water and oxygen while achieving the effect of flexible display, the traditional process uses a thin-film packaging structure to mold the OLED device. [0003] Generally speaking, the thin-film packaging structure is composed of overlapping organic layers and inorganic layers. The organic layer in the thin-film packaging structure has a certain degree of fluidity. In order to limit it to a certain area, a circle or Multi-circle retaining wall (dam). [0004] figure 1 A ...

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Problems solved by technology

figure 1 The retaining wall shown has four corner regions CR, figure 2 The number and shape of the corner region CR in the special-shaped screen 200 shown are more complicated.

[0006] Since the shape of the corner region CR is relatively more complex than that of the straight region SR, there is a problem in the prior art that the organic layer of the thin-film packaging structure overflows from the corner region CR, resulting in water and oxygen intrusion, OLED devices cannot obtain good water and oxygen protection, and reduce the Lifespan of OLED Displays

Due to the large number of CRs in the corner area of ​​the special-shaped screen 200, the problem of overflow of the organic layer of the thin-film packaging structure is more serious

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