OLED (Organic Light-Emitting Diode) display panel

Abstract

The invention provides an OLED (Organic Light-Emitting Diode) display panel, which comprises an array substrate, an OLED functional layer and a thin-film packaging layer, and is characterized in thatthe OLED display panel is internally provided with an opening area to be cut and removed, a blocking dam surrounding the opening area is arranged between the array substrate and the OLED functional layer at the periphery of the opening area, the blocking dam includes a blocking unit with the cross section being in the shape of an inverted trapezoid around the opening area, and the OLED functionallayer above the blocking dam is disconnected at two sides of the blocking dam during film forming as the cross section of the blocking unit is in the shape of an inverted trapezoid. According to the invention, the structure of the blocking dam at the periphery of the opening area is optimized, and the cross section of the blocking unit is enabled to be in the shape of an inverted trapezoid, so that the whole common film layer deposited by a common mask plate can be cut off at two sides of the blocking dam, thus environmental water and oxygen can be prevented from invading into a light-emittingpixel area of the panel from the cutting section of the opening area along the continuous common film layer after the opening area is cut, and the service life of the panel is prolonged.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display panel. Background technique [0002] In flat panel display technology, organic light-emitting diode (Organic Light-Emitting Diode, OLED) display has the advantages of thinness, active light emission, fast response speed, large viewing angle, wide color gamut, high brightness, low power consumption and the ability to prepare flexible screens. And many other excellent properties have aroused great interest in the scientific research community and the industry. [0003] Nowadays, the design of "full screen" has become the mainstream of the times. At present, all suppliers are focusing on the research and development of full-screen products with a higher screen-to-body ratio. For example, the special-shaped (Notch) screen design adopted by the iPhone X mobile phone. The recently emerging under-screen camera design is O-cut (O-Cut) screen design, such as figure 1 A...

AI Technical Summary

Problems solved by technology

Therefore, when the subsequent process cuts the effective light-emitting area of ​​the OLED display panel along the edge of the opening area 9 to form a circular hole for placing the camera, a section will be formed on the multi-layer film layer, and the multi-layer film layer involved includes In the OLED functional layer 6, the organic common film layer and the metal common film layer generated by vapor deposition of a common metal mask plate are easily corroded by environmental water and oxygen at the cross-section, and because these film layers are directly connected To the inside of the light-emitting pixel area, ambient water and oxygen can erode into the light-emitting pixel area along the continuous film layer, thus shortening the life of the screen

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